|
(11) | EP 4 079 670 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||||||
| (54) | YARN JOINING PROCESSING DEVICE AND YARN FEEDING DEVICE |
| (57) A yarn joining processing device 9A controls a suction nozzle 614 and an arm portion
612 to perform a yarn hooking process including at least one of a first yarn hooking
operation of holding a first yarn end Y1 by the suction nozzle 614 and locking a yarn
Y of a first yarn feeding package P11 to a clip 29 by an arm portion 612 before a
first setting operation of setting the first yarn end Y1 of the first yarn feeding
package P11 to a yarn joining processing mechanism 64 and a second yarn hooking operation
of holding a second yarn end Y2 by the suction nozzle 614 and locking a yarn Y of
a second yarn feeding package P12 to the clip 29 by the arm portion 612 before a second
setting operation of setting the second yarn end Y2 of the second yarn feeding package
P12 to the yarn joining processing mechanism 64.
|
TECHNICAL FIELD
[0001] An aspect of the present invention relates to a yarn joining processing device and a yarn feeding device.
BACKGROUND
[0002] A false-twist texturing machine is known in which a plurality of synthetic yarns fed from yarn feeding packages are false-twist textured and the processed synthetic yarn is wound by a winding device to form a winding package. For example, Patent Literature 1 (Japanese Unexamined Patent Publication No. H07-68010) discloses a false-twist texturing machine including a yarn feeding stand which holds a plurality of yarn feeding packages and a false-twist texturing device which false-twists yarns fed from the yarn feeding packages. In such a yarn feeding stand, a yarn joining process (tail joining process) which connects the synthetic yarn of the yarn feeding package supported by one peg to the synthetic yarn of the yarn feeding package supported by the other peg is performed. Accordingly, since the synthetic yarn is fed from the other yarn feeding package even when the synthetic yarn of one yarn feeding package disappears, the synthetic yarn can be continuously fed to the false-twist texturing device.
[0003] In the yarn joining process, yarns are respectively drawn out from two yarn feeding packages and these yarns are connected by a splicer. At the time of completion of this connection, the yarn portion connecting the yarn feeding packages is in a considerably loosened state. If one of the yarn feeding packages is emptied in this state, a local load may be applied to a part of the yarn portion when the yarn portion loosened between the packages is sent toward a processing portion or the yarn portion may come into contact with peripheral parts to cause yarn damage or breakage. In order to avoid such problems, an operator locks the yarn portion between the packages to a locking portion provided at a predetermined position of a yarn feeding stand after the yarn connection using the splicer and removes slack by turning one or both yarn feeding packages in the yarn drawing direction in the locked state.
[0004] Automation of such a series of operations, that is, a series of operations including a yarn joining process of respectively drawing out yarns from two yarn feeding packages, guiding and setting the yarns to the splicer, and connecting the yarns by the splicer and a yarn hooking process of locking the connected yarn to the locking portion has been examined. However, in order to move the yarn precisely to be reliably locked to the locking portion, the yarn needs to be strongly gripped in a holding portion not to be movable. However, in this case, the gripped yarn portion is damaged. On the other hand, for example, when the yarn is held on a hook not to damage the yarn, irregular slack may occur in the yarn. Accordingly, it is difficult to precisely move a yarn end and it is easy to fail to hook the yarn on the locking portion.
SUMMARY
[0005] Here, an object of an aspect of the present invention is to provide a yarn joining processing device and a yarn feeding device capable of realizing automation of a series of operations including a yarn joining process and a yarn hooking process while maintaining both yarn quality and improving operation accuracy.
[0006] A yarn joining processing device according to an aspect of the present invention is a yarn joining processing device for connecting a yarn end of a first yarn feeding package mounted on a yarn feeding stand to a yarn end of a second yarn feeding package and locking a connected yarn to at least one locking portion provided in the yarn feeding stand, the yarn joining processing device including: a suction holding portion which sucks the yarn and holds the yarn; a moving portion which moves the suction holding portion; a connecting portion which connects the yarn end of the first yarn feeding package to the yarn end of the second yarn feeding package; and a control unit which controls the suction holding portion, the moving portion, and the connecting portion, wherein the control unit controls the suction holding portion, the moving portion, and the connecting portion so as to perform a yarn joining process including a first setting operation of holding the yarn end of the first yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to set the yarn end of the first yarn feeding package to the connecting portion, a second setting operation of holding the yarn end of the second yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to set the yarn end of the second yarn feeding package to the connecting portion, and a connecting operation of connecting the yarn end of the first yarn feeding package to the yarn end of the second yarn feeding package by the connecting portion after the first setting operation and the second setting operation, and wherein the control unit controls the suction holding portion and the moving portion to perform a yarn hooking process including at least one of a first yarn hooking operation of holding the yarn end of the first yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to lock the yarn of the first yarn feeding package to the locking portion before the first setting operation and a second yarn hooking operation of holding the yarn end of the second yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to lock the yarn of the second yarn feeding package is locked to the locking portion before the second setting operation.
[0007] The yarn end of the first yarn feeding package and the yarn end of the second yarn feeding package mentioned here each mean not only a tip of the yarn but also a yarn portion having a predetermined length with the tip as a base point. Further, the yarn feeding stand is provided in a yarn feeding portion of a yarn texturing device and supports the plurality of yarn feeding packages. The yarn fed to the processing portion of the yarn texturing device is wound on the yarn feeding package. In the yarn joining processing device with this configuration, the yarn is hooked to the locking portion before being connected, unlike the conventional sequence of operations performed by the operator. Then, a suction force is constantly applied in the suction direction to each of the yarns of the first yarn feeding package and the second yarn feeding package while being held by the suction holding portion, and thus tension is applied to each yarn portion from the yarn feeding package to the suction holding portion. Since the moving portion can move the yarn end in a taut state, the yarn can be moved more precisely than in a case where the yarn end of irregularly loosened yarn is moved, thus enabling the yarn to be hooked to the locking portion with high accuracy. Further, the yarn is held by the suction, and thus damage caused to the yarn when gripping does not occur. Additionally, in a case of sucking and holding yarn in which the yarn end of the first yarn feeding package and the yarn end of the second yarn feeding package are connected, the yarn is sucked by the suction holding portion in a partially bent state. However, in this configuration, the yarn end of each of the first yarn feeding package and the second yarn feeding package is sucked and held, and thus bending such as that described above does not occur. Thus, the yarn is not damaged even when held by the suction holding portion. As a result, it is possible to realize automation of a series of operations including a yarn joining process and a yarn hooking process while maintaining both yarn quality and improving operation accuracy.
[0008] In the yarn joining processing device according to an aspect of the present invention, the locking portion may include a first locking portion and a second locking portion, the first yarn hooking operation is an operation of moving the suction holding portion so as to lock the yarn of the first yarn feeding package to the first locking portion, and the second yarn hooking operation is an operation of moving the suction holding portion so as to lock the yarn of the second yarn feeding package to the second locking portion.
[0009] In the yarn joining processing device with this configuration, an effect similar to that described above can be obtained even when the yarn feeding stand is provided with the first locking portion hooking the yarn of the first yarn feeding package and the second locking portion hooking the yarn of the second yarn feeding package. Particularly, when the yarn of the first yarn feeding package is locked to the first locking portion and the yarn of the second yarn feeding package is locked to the second locking portion, a more stable locked state can be obtained.
[0010] In the yarn joining processing device according to an aspect of the present invention, the first locking portion may include a first inner layer side locking portion and a first outer layer side locking portion, the second locking portion may include a second inner layer side locking portion and a second outer layer side locking portion, the first yarn hooking operation when the yarn is unwound from the outer layer side of the first yarn feeding package may be an operation of holding the yarn end on the inner layer side of the first yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to lock the yarn of the first yarn feeding package to the first inner layer side locking portion, the second yarn hooking operation when the yarn is unwound from the outer layer side of the first yarn feeding package may be an operation of holding the yarn end on the outer layer side of the second yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to lock the yarn of the second yarn feeding package to the second outer layer side locking portion, the first setting operation when the yarn is unwound from the outer layer side of the first yarn feeding package may be an operation of holding the yarn end on the inner layer side of the first yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to set the yarn end on the inner layer side of the first yarn feeding package to the connecting portion, the second setting operation when the yarn is unwound from the outer layer side of the first yarn feeding package may be an operation of holding the yarn end on the outer layer side of the second yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to set the yarn end on the outer layer side of the second yarn feeding package to the connecting portion, the connecting operation when the yarn is unwound from the outer layer side of the first yarn feeding package may be an operation of connecting the yarn end on the inner layer side of the first yarn feeding package to the yarn end on the outer layer side of the second yarn feeding package, the first yarn hooking operation when the yarn is unwound from the outer layer side of the second yarn feeding package may be an operation of holding the yarn end on the outer layer side of the first yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to lock the yarn of the first yarn feeding package to the first outer layer side locking portion, the second yarn hooking operation when the yarn is unwound from the outer layer side of the second yarn feeding package may be an operation of holding the yarn end on the inner layer side of the second yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to lock the yarn of the second yarn feeding package to the second inner layer side locking portion, the first setting operation when the yarn is unwound from the outer layer side of the second yarn feeding package may be an operation of holding the yarn end on the outer layer side of the first yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to set the yarn end on the outer layer side of the first yarn feeding package to the connecting portion, the second setting operation when the yarn is unwound from the outer layer side of the second yarn feeding package may be an operation of holding the yarn end on the inner layer side of the second yarn feeding package by the suction holding portion and moving the suction holding portion by the moving portion so as to set the yarn end on the inner layer side of the second yarn feeding package to the connecting portion, and the connecting operation when the yarn is unwound from the outer layer side of the second yarn feeding package may be an operation of connecting the yarn end on the outer layer side of the first yarn feeding package to the yarn end on the inner layer side of the second yarn feeding package.
[0011] In the yarn joining processing device with this configuration, an effect similar to that described above can be obtained even when the yarn feeding stand is provided with the locking portions respectively corresponding to the yarn on the inner layer side of the first yarn feeding package, the yarn on the outer layer side of the first yarn feeding package, the yarn on the inner layer side of the second yarn feeding package, and the yarn on the outer layer side of the second yarn feeding package. Particularly, the stability of the locked state at each locking portion can be further improved in the case of locking the yarn of the first yarn feeding package to the first inner layer side locking portion and locking the yarn of the second yarn feeding package to the second outer layer side locking portion when the yarn is unwound from the outer layer side of the first yarn feeding package, and in the case of locking the yarn of the first yarn feeding package to the first outer layer side locking portion and locking the yarn of the second yarn feeding package to the second inner layer side locking portion when the yarn is unwound from the outer layer side of the second yarn feeding package.
[0012] A yarn feeding device according to an aspect of the present invention includes: a yarn feeding stand which includes first mounting portions each used to mount a first yarn feeding package thereon, second mounting portions each used to mount a second yarn feeding package thereon, and locking portions each locking a yarn; and a yarn joining processing device which connects a yarn end of the first yarn feeding package mounted on each of the first mounting portions to a yarn end of the second yarn feeding package mounted on each of the second mounting portions and locks the connected yarn to each of the locking portions, wherein the locking portions each include at least one first locking portion which locks the yarn drawn out of the first yarn feeding package and at least one second locking portion which locks the yarn drawn out of the second yarn feeding package, wherein the yarn joining processing device includes suction holding portions which each hold the yarn by sucking the yarn, moving portions which each move the suction holding portion, connecting portions which each connect the yarn end of the first yarn feeding package to the yarn end of the second yarn feeding package, and a control unit which controls the connecting portions, the suction holding portions, and the moving portions, wherein the control unit controls the suction holding portions, the moving portions, and the connecting portions so as to perform a yarn joining process including a first setting operation of holding the yarn end of the first yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to set the yarn end of the first yarn feeding package to each of the connecting portions, a second setting operation of holding the yarn end of the second yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to set the yarn end of the second yarn feeding package to each of the connecting portions, and a connecting operation of connecting the yarn end of the first yarn feeding package to the yarn end of the second yarn feeding package by each of the connecting portions after the first setting operation and the second setting operation, and the control unit controls each of the suction holding portions and each of the moving portions to perform a yarn hooking process including at least one of a first yarn hooking operation of holding the yarn end of the first yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to lock the yarn of the first yarn feeding package to the first locking portion before the first setting operation and a second yarn hooking operation of holding the yarn end of the second yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to lock the yarn of the second yarn feeding package to the second locking portion before the second setting operation.
[0013] In the yarn feeding device with this configuration, the yarn is hooked before being connected, unlike the conventional sequence of operations performed by the operator. Then, a suction force is constantly applied in the suction direction to each of the yarns of the first yarn feeding package and the second yarn feeding package while being held by the suction holding portion, and thus tension is applied to each yarn portion from the yarn feeding package to the suction holding portion. Since the moving portion can move the yarn end in a taut state, the yarn can be moved more precisely than in a case where the yarn end of irregularly loosened yarn is moved, thus enabling the yarn to be hooked to the locking portion with high accuracy. Further, the yarn is held by the suction, and thus damage caused to the yarn when gripping does not occur. Further, in a case of sucking yarn in which the yarn end of the first yarn feeding package and the yarn end of the second yarn feeding package are connected, the yarn is sucked by the suction holding portion while being partially bent. However, in this configuration, the yarn end of each of the first yarn feeding package and the second yarn feeding package is sucked, and thus bending such as that described above does not occur. Thus, the yarn is not damaged even when held by the suction holding portion.
[0014] Further, in the yarn feeding device with this configuration, the yarn feeding stand is provided with the first locking portion corresponding to the first yarn feeding package and the second locking portion corresponding to the second yarn feeding package. Accordingly, the first locking portion and the second locking portion can be provided in more appropriate positions and orientations as compared with the locking portion used for hooking the yarn of the first yarn feeding package and hooking the yarn of the second yarn feeding package. As a result, it is possible to easily hook the yarn and to prevent the hooked yarn from coming off.
[0015] Further, in the yarn feeding device with this configuration, the load applied to the locking portion when the yarn feeding package is rotated to remove slack after the yarn joining operation can be distributed to each of the first locking portion and the second locking portion. Therefore, it is possible to more effectively prevent the yarn from coming off from each of the first locking portion and the second locking portion. Further, the locked state of the yarn connecting the yarn feeding packages can be maintained even when the yarn comes off from one of the first locking portion and the second locking portion, the yarn is locked to the other of the first locking portion and the second locking portion.
[0016] As described above, in the yarn feeding device with this configuration, it is possible to realize automation of a series of operations including a yarn joining process and a yarn hooking process while maintaining both yarn quality and improving operation accuracy.
[0017] In the yarn feeding device according to an aspect of the present invention, the first locking portion is disposed on the side of each of the first mounting portions in relation to the center between the first mounting portions and the second mounting portions, and the second locking portion is disposed on the side of each of the second mounting portions in relation to the center between the first mounting portions and the second mounting portions.
[0018] In this configuration, the yarn drawn out of the first yarn feeding package is locked to the first locking portion disposed in the vicinity of the first yarn feeding package, and the yarn drawn out of the second yarn feeding package is locked to the second locking portion disposed in the vicinity of the second yarn feeding package. Accordingly, more accurate and stable yarn hooking can be realized in the first locking portion and the second locking portion.
[0019] In the yarn feeding device according to an aspect of the present invention, the first locking portion includes a first inner layer side locking portion and a first outer layer side locking portion, the second locking portion includes a second inner layer side locking portion and a second outer layer side locking portion, the first yarn hooking operation when the yarn is unwound from the outer layer side of the first yarn feeding package is an operation of holding the yarn end on the inner layer side of the first yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to lock the yarn of the first yarn feeding package to the first inner layer side locking portion, the second yarn hooking operation when the yarn is unwound from the outer layer side of the first yarn feeding package is an operation of holding the yarn end on the outer layer side of the second yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to lock the yarn of the second yarn feeding package to the second outer layer side locking portion, the first setting operation when the yarn is unwound from the outer layer side of the first yarn feeding package is an operation of holding the yarn end on the inner layer side of the first yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to set the yarn end on the inner layer side of the first yarn feeding package to each of the connecting portions, the second setting operation when the yarn is unwound from the outer layer side of the first yarn feeding package is an operation of holding the yarn end on the outer layer side of the second yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to set the yarn end on the outer layer side of the second yarn feeding package to each of the connecting portions, the connecting operation when the yarn is unwound from the outer layer side of the first yarn feeding package is an operation of connecting the yarn end on the inner layer side of the first yarn feeding package to the yarn end on the outer layer side of the second yarn feeding package, the first yarn hooking operation when the yarn is unwound from the outer layer side of the second yarn feeding package is an operation of holding the yarn end on the outer layer side of the first yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to lock the yarn of the first yarn feeding package to the first outer layer side locking portion, the second yarn hooking operation when the yarn is unwound from the outer layer side of the second yarn feeding package is an operation of holding the yarn end on the inner layer side of the second yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to lock the yarn of the second yarn feeding package to the second inner layer side locking portion, the first setting operation when the yarn is unwound from the outer layer side of the second yarn feeding package is an operation of holding the yarn end on the outer layer side of the first yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to set the yarn end on the outer layer side of the first yarn feeding package to each of the connecting portions, the second setting operation when the yarn is unwound from the outer layer side of the second yarn feeding package is an operation of holding the yarn end on the inner layer side of the second yarn feeding package by each of the suction holding portions and moving each of the suction holding portions by each of the moving portions so as to set the yarn end on the inner layer side of the second yarn feeding package to each of the connecting portions, and the connecting operation when the yarn is unwound from the outer layer side of the second yarn feeding package is an operation of connecting the yarn end on the outer layer side of the first yarn feeding package to the yarn end on the inner layer side of the second yarn feeding package.
[0020] In the yarn feeding stand of the yarn feeding device with this configuration, the locking portions are provided to correspond to each of the yarn on the inner layer side of the first yarn feeding package, the yarn on the outer layer side of the first yarn feeding package, the yarn on the inner layer side of the second yarn feeding package, and the yarn on the outer layer side of the second yarn feeding package. Accordingly, the locking portions can be provided at more appropriate positions and orientations. As a result, the accuracy and stability of yarn hooking in each locking portion can be further improved.
[0021] According to an aspect of the present invention, it is possible to realize automation of a series of operations including a yarn joining process and a yarn hooking process while maintaining both yarn quality and improving operation accuracy.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022]
FIG. 1 is a diagram showing a configuration of a false-twist texturing machine and a package exchange device according to an embodiment.
FIG. 2 is a perspective view showing a yarn feeding package to which an adapter is attached.
FIG. 3 is a perspective view showing a creel stand.
FIG. 4 is a front view showing a clip.
FIG. 5 is a perspective view showing a peg.
FIG. 6 is a perspective view showing the package exchange device.
FIG. 7 is a diagram showing a schematic configuration of an exchange unit.
FIG. 8 is a perspective view showing a yarn joining device.
FIG. 9 is a perspective view showing the yarn joining device.
FIG. 10 is a perspective view showing the yarn joining device.
FIG. 11 is a block diagram showing a functional configuration of the package exchange device including a yarn joining processing device.
FIG. 12 is a flowchart showing a series of operations including a yarn joining process and a yarn hooking process of the yarn joining processing device.
FIG. 13A is a perspective view showing a series of operations of FIG. 12.
FIG. 13B is a perspective view showing the series of operations of FIG. 12.
FIG. 14A is a perspective view showing the series of operations of FIG. 12.
FIG. 14B is a perspective view showing the series of operations of FIG. 12.
FIG. 15A is a perspective view showing the series of operations of FIG. 12.
FIG. 15B is a perspective view showing the series of operations of FIG. 12.
FIG. 16 is a perspective view showing a part of a creel stand in which a clip according to a first modified example is disposed.
FIG. 17 is a flowchart showing a series of operations including a yarn joining process and a yarn hooking process of a yarn joining processing device according to the first modified example.
FIG. 18A is a perspective view showing the series of operations of FIG. 17.
FIG. 18B is a perspective view showing the series of operations of FIG. 17.
FIG. 19A is a perspective view showing the series of operations of FIG. 17.
FIG. 19B is a perspective view showing the series of operations of FIG. 17.
FIG. 20 is a perspective view showing a part of a creel stand in which a clip according to a second modified example is disposed.
FIG. 21 is a flowchart showing a series of operations including a yarn joining process and a yarn hooking process of a yarn joining processing device according to the second modified example.
FIG. 22A is a diagram showing a state in which a yarn is joined by the yarn joining processing device according to the second modified example.
FIG. 22B is a diagram showing a state in which a yarn is joined by the yarn joining processing device according to the second modified example.
DETAILED DESCRIPTION
[0023] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are designated by the same reference numerals, and duplicate description will be omitted.
[0024] A yarn feeding device 100 of an embodiment includes, as shown in FIG. 1, a creel stand (yarn feeding stand) 20 and a yarn joining processing device 9A. The creel stand 20 is provided in a false-twist texturing machine 1. The yarn joining processing device 9A of an embodiment is mounted on a package exchange device 9. The yarn joining processing device 9A includes a yarn joining device 60 and a control unit 94 which will be described in detail in the rear stage (see FIGS. 1 and 11). In the following description, the "Z direction" shown in the drawing is the vertical direction (up and down direction), the "X direction" is the horizontal direction, and the "Y direction" is the horizontal direction orthogonal to the "X direction" and is also the direction orthogonal to both the X direction and the Z direction.
[0025] The false-twist texturing machine 1 shown in FIG. 1 manufactures a winding package P2 by processing a yarn (synthetic yarn) Y supplied from a plurality of yarn feeding packages P1. The yarn Y is, for example, a synthetic yarn made of thermoplastic synthetic fibers such as polyester and polyamide. The yarn feeding package P1 is formed by winding a partially oriented yarn (POY) on a yarn feeding bobbin B1. The winding package P2 is formed by winding a draw textured yarn (DTY) on a winding bobbin B2. That is, the false-twist texturing machine 1 processes the yarn Y which is the partially oriented yarn to generate the draw textured yarn.
[0026] As shown in FIG. 2, an adapter 8 is attached to the yarn feeding package P1. The adapter 8 holds the yarn Y. The adapter 8 includes an attachment portion 81, a first holding portion 82, and a second holding portion 83. The attachment portion 81 is attached to the yarn feeding bobbin B1 of the yarn feeding package P1 to be rotatable synchronously. The attachment portion 81 is formed in a cylindrical shape. The attachment portion 81 is mounted on an end portion of the yarn feeding bobbin B1 protruding from the side surface of the yarn feeding package P1.
[0027] The first holding portion 82 holds the yarn end of the yarn Y on the outer layer side (mouth yarn side) of the yarn feeding package P1 (hereinafter, the yarn end of the yarn Y on the outer layer side is referred to as a first yarn end Y1). The first holding portion 82 is provided in the attachment portion 81. The first holding portion 82 includes a first arm 821, a first gripper 822, and a first yarn guide 823. The first arm 821 is fixed to the side surface of the attachment portion 81 at the base end side and extends along the radial direction of the attachment portion 81. The first gripper 822 grips the first yarn end Y1. The first gripper 822 is provided on the front end side of the first arm 821. The first yarn guide 823 is provided in the first arm 821.
[0028] The second holding portion 83 holds the yarn end of the yarn Y on the inner layer side (tail yarn side) of the yarn feeding package P1 (hereinafter, the yarn end of the yarn Y on the inner layer side is referred to as a second yarn end Y2). The second holding portion 83 is provided in the attachment portion 81. The second holding portion 83 includes a second arm 831, a second gripper 832, and a second yarn guide 833. The second arm 831 is fixed to the side surface of the attachment portion 81 at the base end side and extends along the radial direction of the attachment portion 81. The second arm 831 is disposed to be positioned in the same linear shape as the first arm 821. The second gripper 832 grips the second yarn end Y2. The second gripper 832 is provided at the front end side of the second arm 831. The second yarn guide 833 is provided in the second arm 831. The first yarn end Y1 and the second yarn end Y2 mentioned herein mean not only a tip of the yarn Y but also a yarn portion having a predetermined length with the tip as a base point.
[0029] In the adapter 8, the first yarn end Y1 of the yarn feeding package P1 is gripped by the first gripper 822 through the first yarn guide 823 of the first holding portion 82 and the second yarn end Y2 drawn out from the inner layer side of the yarn feeding package P1 is gripped by the second gripper 832 through the first yarn guide 823 of the first holding portion 82 and the second yarn guide 833 of the second holding portion 83. For example, the adapter 8 is mounted on the yarn feeding package P1 by an operator. A bobbin cap (not shown) may be attached to the yarn feeding bobbin B1 at an end portion opposite to the end portion to which the adapter 8 is attached.
[0030] As shown in FIG. 1, the false-twist texturing machine 1 includes a yarn feeding portion 2, a processing portion 3, a winding portion 4, a main machine base 5, a winding stand 6, and a support frame 7. A plurality of configurations of the yarn feeding portion 2, the processing portion 3, and the winding portion 4 to be described later are arranged in the Y direction (the longitudinal direction of the base) orthogonal to the traveling surface (the paper surface of FIG. 1) of the yarn Y in which the yarn path is disposed from the yarn feeding portion 2 to the winding portion 4 through the processing portion 3.
[0031] The yarn feeding portion 2 feeds the yarn Y to the processing portion 3. The yarn feeding portion 2 includes a creel stand 20 which holds a plurality of the yarn feeding packages P1. As shown in FIGS. 1 and 3, the creel stand 20 includes a creel base portion 21, a first support column 22, a second support column 23, a partition dish plate 24, a peg (first mounting portion/second mounting portion) 25, and a clip (locking portion) 29. The creel base portion 21 is installed on a floor surface or the like and supports the first support column 22 and the second support column 23. The first support column 22 and the second support column 23 are erected on the creel base portion 21.
[0032] The first support column 22 extends along the Z direction (vertical direction). The first support columns 22 are arranged at equal intervals in the Y direction. The first support column 22 is disposed at one side F1 of the creel stand 20 in the X direction. One side F1 of the X direction is a side in which the processing portion 3 to be described later in detail in the rear stage is disposed and a side in which the yarn Y is sent to the processing portion 3 for performing false-twist texturing.
[0033] The second support column 23 extends along the Z direction. The second support columns 23 are arranged in pairs in the Y direction and a plurality of pairs of second support columns 23 and 23 are arranged in the Y direction. The second support column 23 is disposed at the other side F2 of the creel stand 20 in the X direction. The other side F2 of the X direction is a side in which the package exchange device 9 to be described later in detail in the rear stage travels and a side in which the operator performs a yarn joining processing work. A group of the first support columns 22 including the plurality of first support columns 22 and a group of the second support columns 23 including the plurality of second support columns 23 are arranged in the X direction to face each other.
[0034] The partition dish plate 24 is provided to straddle the first support column 22 and the second support column 23. The partition dish plate 24 is a dish plate-shaped member and is arranged at a predetermined interval in the Z direction. The partition dish plate 24 prevents the yarn feeding package P1 from falling from the peg 25.
[0035] The peg 25 supports the yarn feeding package P1. The peg 25 is provided in the second support column 23. A plurality of (for example, four) pegs 25 are arranged at predetermined intervals in the Z direction of the second support column 23. The peg 25 is disposed between two partition dish plates 24 in the Z direction. Further, the pegs 25 are arranged in pairs corresponding to the second support columns 23 and 23 and a plurality of sets (pairs) of the pegs 25 and 25 are arranged in the Y direction.
[0036] In the peg 25 with this configuration, the yarn Y of the yarn feeding package P1 supported by one peg (first peg) 25 of the pair of pegs can be connected to the yarn Y of the yarn feeding package P1 supported by the other peg (second peg) 25 of the pair of pegs. Specifically, the first yarn end Y1 of the yarn feeding package P1 supported by one peg 25 of the pair of pegs is connected to the second yarn end Y2 of the yarn feeding package P1 supported by the other peg 25 of the pair of pegs or the second yarn end Y2 of the yarn feeding package P1 supported by one peg 25 of the pair of pegs is connected to the first yarn end Y1 of the yarn feeding package P1 supported by the other peg 25 of the pair of pegs. Accordingly, one yarn Y is fed from two yarn feeding packages P1 and P1 respectively supported by the pair of pegs 25 and 25. That is, the yarn Y can be continuously supplied to the processing portion 3.
[0037] The clip 29 is disposed between the pair of pegs 25 and 25 in the Y direction. In this embodiment, the clip is disposed at the center portion of the pair of pegs 25 and 25. As shown in FIG. 4, the clip 29 includes a pair of dish plates 291 and 292, an elastic member 293 that urges the pair of dish plates 291 and 292 toward the partition dish plate 24, and a shaft portion 294. The pair of dish plates 291 and 292 are provided to be movable within a predetermined range in the extension direction of the shaft portion 294 and are urged toward the partition dish plate 24 by the elastic member 293. When the yarn Y is disposed between the pair of dish plates 291 and 292, the yarn Y is locked by being sandwiched between the pair of dish plates 291 and 292. Additionally, the elastic force of the elastic member 293 is appropriately selected or adjusted so that the locking by the pair of dish plates 291 and 292 is released when the operator pulls the yarn Y.
[0038] As shown in FIG. 5, the peg 25 includes a yarn feeding package support portion 251, a peg body portion 252, a first rotating mechanism 253, a body support portion 254, and a second rotating mechanism 255.
[0039] The yarn feeding package support portion 251 locks the yarn feeding package P1. The yarn feeding package support portion 251 includes package support members 251A and 251B. The package support members 251A and 251B are bar-shaped members. The package support members 251A and 251B are rotatably supported by the peg body portion 252. The package support members 251A and 251B are arranged at predetermined intervals to extend in one direction and to be parallel to each other. The peg 25 supports the yarn feeding package P1 at two points by the package support members 251A and 251B.
[0040] One end portion of the package support member 251A in the extension direction is provided with a covering portion 251D. One end portion of the package support member 251B in the extension direction is provided with a covering portion 251E. The covering portions 251D and 251E are formed of, for example, rubber (resin) having a large friction coefficient. The covering portions 251D and 251E come into contact (contact) with the inner peripheral surface of the yarn feeding bobbin B1 of the winding package P2. One end of the package support member 251A and one end of the package support member 251B are connected by a connection member 251F.
[0041] The peg body portion 252 supports the package support member 251A and the package support member 251B to be rotatable around the rotation axis thereof. The peg body portion 252 is provided with a regulation member 252A. The regulation member 252A is formed, for example, in a disk shape. The regulation member 252A is disposed on one side surface of the peg body portion 252. The regulation member 252A is attached by inserting the package support member 251A and the package support member 251B therethrough. The regulation member 252A faces the end surface of the yarn feeding package P1 and regulates the movement of the yarn feeding package P1 in the extension direction of the package support member 251A and the package support member 251B. An insertion hole 252B is formed in the peg body portion 252. The second support column 23 (see FIG. 3) of the creel stand 20 is inserted through the insertion hole 252B.
[0042] The first rotating mechanism 253 includes a driven pulley 253A, a drive pulley 253B, a power transmission belt 253C, and a first wheel 253D. The driven pulley 253A is provided at the other end of the package support member 251A. The drive pulley 253B is provided at the other end of the package support member 251B. The power transmission belt 253C is hung on the driven pulley 253A and the drive pulley 253B. The first wheel 253D is provided in the drive pulley 253B (the package support member 251B). In this embodiment, the first wheel 253D is a Geneva wheel that constitutes a Geneva mechanism. The first wheel 253D rotates in accordance with the rotational driving of the first yarn joining processing driver 621 or the second yarn joining processing driver 631 of the yarn joining device 60 to be described later.
[0043] The body support portion 254 is formed in a tubular shape. One end of the body support portion 254 is connected to the peg body portion 252 and the body support portion 254 and the peg body portion 252 are integrally formed with each other. The hollow portion of the body support portion 254 communicates with the insertion hole 252B of the peg body portion 252. The second support column 23 (see FIG. 3) of the creel stand 20 is inserted into the body support portion 254.
[0044] The second rotating mechanism 255 is a Geneva wheel that constitutes the Geneva mechanism. The second rotating mechanism 255 is connected to the other end of the body support portion 254 and the second rotating mechanism 255 and the body support portion 254 are integrally formed with each other. The second rotating mechanism 255 rotates by the driving of a rotation driver 932A of a rotation device 932 to be described later. The peg body portion 252 rotates in accordance with the rotation of the second rotating mechanism 255. Accordingly, the package support members 251A and 251B rotate.
[0045] The processing portion 3 performs false-twist texturing on the yarn Y fed from the yarn feeding portion 2. As shown in FIG. 1, the processing portion 3 includes a twisting guide 31, a first heating device 32, a cooling device 33, a false-twist texturing device 34, a second heating device 35, and a feed roller 36 (feed rollers 361 to 363). Each of the twisting guide 31, the first heating device 32, the cooling device 33, the false-twist texturing device 34, the second heating device 35, and the feed roller 36 (the feed rollers 361 to 363) is individually provided for each yarn Y fed from the yarn feeding portion 2 and they are arranged in a row in the Y direction.
[0046] The twisting guide 31 prevents the twist applied to the yarn Y by the false-twist texturing device 34 to be described later from propagating to the upstream side of the twisting guide 31 in the yarn traveling direction. The first heating device 32 heats the yarn Y sent from the yarn feeding portion 2 through the feed roller 361. The cooling device 33 cools the yarn Y heated by the first heating device 32. The false-twist texturing device 34 twists the yarn Y. The second heating device 35 heats the yarn Y sent from the false-twist texturing device 34 through the feed roller 362.
[0047] The feed roller 361 is provided between the creel stand 20 and the twisting guide 31, the feed roller 362 is provided between the false-twist texturing device 34 and the second heating device 35, and the feed roller 363 is provided between the second heating device 35 and a winding device 41. Each feed roller 36 (feed rollers 361 to 363) includes a drive roller and a driven roller. The feed rollers 36 are also arranged in a row in the Y direction.
[0048] The transfer speed of the yarn Y by the feed roller 362 is faster than the transfer speed of the yarn Y by the feed roller 361 and the yarn Y is stretched between the feed roller 361 and the feed roller 362. The transfer speed of the yarn Y by the feed roller 363 is slower than the transfer speed of the yarn Y by the feed roller 362 and the yarn Y is relaxed between the feed roller 362 and the feed roller 363.
[0049] In the processing portion 3 with the above-described configuration, the yarn Y stretched between the feed roller 361 and the feed roller 362 is twisted by the false-twist texturing device 34. The twist formed by the false-twist texturing device 34 is propagated to the twisting guide 31, but is not propagated to the upstream side of the twisting guide 31 in the yarn traveling direction. The yarn Y which is stretched and twisted is heated by the first heating device 32 to be heat-fixed and is cooled by the cooling device 33. The yarn Y is untwisted on the downstream side from the false-twist texturing device 34, but each filament is maintained in a false-twist textured state by the above heat-fixing.
[0050] The yarn Y is heat-fixed by the second heating device 35 while being relaxed between the feed roller 362 and the feed roller 363. Finally, the yarn Y sent from the feed roller 363 is wound by the winding device 41 of the winding portion 4 to form the winding package P2.
[0051] The winding portion 4 includes the winding device 41, a package stocker 42, a ball lifting device (not shown), and the like. The winding device 41 winds the yarn Y false-twist textured by the processing portion 3 to form the winding package P2. The package stocker 42 stores the winding package P2 formed by the winding device 41. The ball lifting device removes the winding package P2 formed by the winding device 41, transfers the winding package P2 to the package stocker 42, and attaches an empty winding bobbin B2 to the winding device 41.
[0052] The package exchange device 9 collects the yarn feeding bobbin B1 from the peg 25 and attaches the yarn feeding package P1 to the peg 25. As shown in FIG. 6, the package exchange device 9 travels along a rail 98. The rail 98 is laid on a floor and extends in the Y direction. That is, the package exchange device 9 is provided to be able to travel along the Y direction. The package exchange device 9 includes a traveling unit 90, an elevating unit 91, a holding unit 92, an exchange unit 93, the yarn joining device 60, and a control unit 94 (see FIG. 11) which controls the operations of the units 90, 91, 92, and 93 and the yarn joining device 60.
[0053] The traveling unit 90 is provided with a vehicle wheel traveling on the rail 98, a drive mechanism, and the like. The traveling unit 90 supports the elevating unit 91, the holding unit 92, and the exchange unit 93. The elevating unit 91 is elevated while the operator gets thereon. The elevating unit 91 is used for the maintenance or the like. The elevating unit 91 includes a work table 911 on which the operator gets, a guide portion 912 which supports the work table 911 to be movable in the Z direction, and a drive mechanism (not shown) which drives the work table.
[0054] The holding unit 92 holds the plurality of (for example, four) yarn feeding packages P1. The holding unit 92 receives the yarn feeding package P1 supplied from a package replenishing device (not shown), temporarily stores the yarn feeding package P1, and supplies the yarn feeding package P1 to the exchange unit 93. The holding unit 92 is provided to be rotatable in the range of about 90°. More specifically, the holding unit 92 is provided to be rotatable between a replenishment position in which the yarn feeding package P1 is supplied from the package replenishing device and a supply position (a position shown in FIG. 6) in which the yarn feeding package P1 is supplied to the exchange unit 93.
[0055] The exchange unit 93 exchanges the yarn feeding bobbin B1 and the yarn feeding package P1 in the peg 25. Specifically, the exchange unit 93 collects the yarn feeding bobbin B1 (see FIG. 1) from the peg 25 and attaches the yarn feeding package P1 to the peg 25. The exchange unit 93 is provided adjacent to the holding unit 92. As shown in FIG. 7, the exchange unit 93 includes a base 931, a rotation device 932, a collection device 933, a supply device 934, and a rotary table 936. Additionally, in FIG. 6, the description of the rotation device 932, the collection device 933, the supply device 934, the rotary table 936, and the yarn joining device 60 described in detail in the rear stage is omitted.
[0056] The base 931 includes the rotation device 932, the collection device 933, the supply device 934, and the rotary table 936 supporting the yarn joining device 60. The base 931 is provided to be elevatable along the Z direction. The rotation device 932 is fixed to the base 931. The rotation device 932 rotates the peg 25 of the creel stand 20. The rotation device 932 includes the rotation driver 932A and a rotation arm 932B.
[0057] The rotation driver 932A rotates the second rotating mechanism 255 (see FIG. 5) of the peg 25. The rotation driver 932A is a Geneva driver that constitutes the Geneva mechanism. The rotation driver 932A is rotated by the rotational driving of the motor (not shown). The rotation arm 932B supports the rotation driver 932A. The rotation arm 932B is provided to be swingable in the horizontal direction. The rotation arm 932B is driven by, for example, a motor or an air cylinder (not shown). The rotation device 932 is provided to correspond to one peg 25 and the other peg 25 provided in pairs in the creel stand 20.
[0058] The rotation device 932 changes the direction of the peg 25 by rotating the peg 25 when attaching the yarn feeding package P1 to the peg 25. More specifically, the rotation device 932 swings the rotation arm 932B so that the rotation driver 932A engages with the second rotating mechanism 255 of the peg 25. The rotation device 932 rotates the rotation driver 932A in one direction when the rotation driver 932A and the second rotating mechanism 255 engage with each other. In the peg 25, the body support portion 254 rotates when the second rotating mechanism 255 rotates. Accordingly, the peg 25 rotates and the front end portion of the yarn feeding package support portion 251 faces the exchange unit 93.
[0059] The collection device 933 is provided in the rotary table 936 rotatably supported by the base 931. The collection device 933 collects the yarn feeding bobbin B1 from the peg 25. The collection device 933 includes a yarn feeding bobbin support portion 933A which supports the yarn feeding bobbin B1. The collection device 933 supports the yarn feeding bobbin B1 by advancing the yarn feeding bobbin support portion 933A while the yarn feeding bobbin B1 is not supported by the peg 25 and collects the yarn feeding bobbin B1 from the peg 25 by retracting the yarn feeding bobbin support portion 933A while the yarn feeding bobbin B1 is supported by the peg 25.
[0060] The supply device 934 is provided in the rotary table 936 rotatably supported by the base 931. The supply device 934 supplies the yarn feeding package P1 to the peg 25. The supply device 934 includes a yarn feeding package supply unit 934A supporting the yarn feeding package P1. The supply device 934 attaches the yarn feeding package P1 to the peg 25 by advancing the yarn feeding package supply unit 934A while the yarn feeding package P1 is supported by the peg 25 and supplies the yarn feeding package P1 to the peg 25 by retracting the yarn feeding package supply unit 934A while the yarn feeding package P1 is not supported by the peg 25.
[0061] The package exchange device 9 connects the yarn ends of the pair of yarn feeding packages P1 and P1 attached to the pair of pegs 25 and 25 of the creel stand 20 (yarn joining process) and locks the connected yarn to at least one clip 29 provided in the creel stand 20 (the yarn hooking process) in addition to the collection of the yarn feeding bobbin B1 from the peg 25 and the attachment of the yarn feeding package P1 to the peg 25. The yarn joining process and the yarn hooking process are performed by the yarn joining processing device 9A. The yarn joining processing device 9A includes the yarn joining device 60 and the control unit 94.
[0062] The yarn joining device 60 is provided in the rotary table 936 rotatably supported by the base 931. The yarn joining device 60 performs yarn joining processing on the first yarn end Y1 of the yarn feeding package P1 supported by one peg 25 and the second yarn end Y2 of the yarn feeding package P1 supported by the other peg 25 or yarn joining processing on the second yarn end Y2 of the yarn feeding package P1 supported by one peg 25 and the first yarn end Y1 of the yarn feeding package P1 supported by the other peg 25. Hereinafter, the yarn feeding package P1 supported by one peg 25 is referred to as a first yarn feeding package P11 and the yarn feeding package P1 supported by the other peg 25 is referred to as a second yarn feeding package P12. As shown in FIGS. 8, 9, and 10, the yarn joining device 60 includes a yarn hooking mechanism 61, a first rotation mechanism 62, a second rotation mechanism 63, and a yarn joining processing mechanism 64.
[0063] The yarn hooking mechanism 61 captures the yarn Y of the yarn feeding package P1 and guides the yarn Y to the yarn joining processing mechanism 64. The yarn hooking mechanism 61 captures the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 and guides them to the yarn joining processing mechanism 64 or captures the second yarn end Y2 of the first yarn feeding package P11 and the first yarn end Y1 of the second yarn feeding package P12 and guides them to the yarn joining processing mechanism 64. The yarn hooking mechanism 61 includes a suction gun 611, an arm portion (moving portion) 612, and a hook portion 615.
[0064] The suction gun 611 sucks and captures the yarn Y. The suction gun 611 includes a suction pipe 613 and a suction nozzle (suction holding portion) 614. The suction nozzle 614 is provided at the tip of the suction pipe 613. The suction nozzle 614 sucks the yarn Y. A negative pressure source (not shown) is connected to the suction pipe 613. Accordingly, a suction flow is generated in the suction nozzle 614. The base end side of the suction pipe 613 is connected to the arm portion 612. The hook portion 615 is provided at the tip of the suction pipe 613 to face the suction nozzle 614. The hook portion 615 locks and moves the yarn Y entangled (joined) by the yarn joining device 60. The arm portion 612 moves the suction gun 611. The arm portion 612 includes a link mechanism and a plurality of motors. The arm portion 612 is supported by the bracket 616.
[0065] The first rotation mechanism 62 operates one peg 25 to rotate the first yarn feeding package P11. The first rotation mechanism 62 rotates the first yarn feeding package P11 to feed the yarn Y from the first yarn feeding package P11 when guiding the yarn Y to the yarn joining processing mechanism 64 by the yarn hooking mechanism 61. The second rotation mechanism 63 operates the other peg 25 to rotate the second yarn feeding package P12. The second rotation mechanism 63 rotates the second yarn feeding package P12 to feed the yarn Y from the second yarn feeding package P12 when guiding the yarn Y to the yarn joining processing mechanism 64 by the yarn hooking mechanism 61.
[0066] The first rotation mechanism 62 includes a first yarn joining processing driver 621, a first motor 622, and a first arm portion 623. The first yarn joining processing driver 621 is rotatably journaled to the first arm portion 623. The first yarn joining processing driver 621 is provided with a first driven pulley 624. The first motor 622 is fixed to the first arm portion 623. The first drive pulley 625 is connected to the output shaft of the first motor 622. The first motor 622 rotationally drives the first drive pulley 625 about an axis. A first power transmission belt 626 is hung on the first driven pulley 624 and the first drive pulley 625. Accordingly, the first yarn joining processing driver 621 is rotated by the rotational driving of the first motor 622.
[0067] The second rotation mechanism 63 includes a second yarn joining processing driver 631, a second motor 632, and a second arm portion 633. The second yarn joining processing driver 631 is rotatably journaled to the second arm portion 633. The second yarn joining processing driver 631 is provided with a second driven pulley 634. The second motor 632 is fixed to the second arm portion 633. A second drive pulley 635 is connected to the output shaft of the second motor 632. The second motor 632 rotationally drives the second drive pulley 635 about an axis. A second power transmission belt 636 is hung on the second driven pulley 634 and the second drive pulley 635. Accordingly, the second yarn joining processing driver 631 is rotated by the rotational driving of the second motor 632.
[0068] The yarn joining processing mechanism 64 performs yarn joining processing. The yarn joining processing mechanism (connecting portion) 64 includes a splicer 66, a first guide mechanism 67, and a second guide mechanism 68.
[0069] The splicer 66 includes a yarn joining processing portion 661, a pair of sandwiching portions 662 and 663, a cutter 664 provided in the sandwiching portion 662, and a cutter 665 provided in the sandwiching portion 663. The yarn joining processing portion 661 entangles (connects) the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 or entangles (connects) the second yarn end Y2 of the first yarn feeding package P11 and the first yarn end Y1 of the second yarn feeding package P12. The pair of sandwiching portions 662 and 663 is provided at positions sandwiching the yarn joining processing portion 661. The pair of sandwiching portions 662 and 663 sandwich the yarn Y (the first yarn end Y1 and the second yarn end Y2: see FIG. 14A) inserted through a chamber of the yarn joining processing portion 661. The cutters 664 and 665 cut, for example, an extra portion including a portion sucked and held by the suction nozzle 614 from the yarn joining processed portion of the yarn Y joined by the yarn joining processing portion 661.
[0070] The first guide mechanism 67 locks and guides the yarn Y. The first guide mechanism 67 is provided to be swingable. The first guide mechanism 67 is provided with a potentiometer (not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls the operation of the first motor 622 of the first rotation mechanism 62 on the basis of the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the rotation amount (feeding amount) of the first yarn feeding package P11 on the basis of the detection result of the potentiometer and draws out the yarn Y from the first yarn feeding package P11 at a predetermined tension.
[0071] The second guide mechanism 68 locks and guides the yarn Y. The second guide mechanism 68 is provided to be swingable. The second guide mechanism 68 is provided with a potentiometer (not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls the operation of the second motor 632 of the second rotation mechanism 63 on the basis of the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the rotation amount (feeding amount) of the second yarn feeding package P12 on the basis of the detection result of the potentiometer and draws out the yarn Y from the second yarn feeding package P12 at a predetermined tension.
[0072] As shown in FIG. 7, the rotary table 936 is rotatably supported by the base 931. The rotary table 936 is rotated so that the yarn feeding bobbin support portion 933A is located in front of the target peg 25 when the yarn feeding bobbin B1 is collected. Further, the rotary table 936 is rotated so that the yarn feeding package supply unit 934A is located in front of the target peg 25 when the yarn feeding package P1 is supplied. Further, the rotary table 936 is rotated to be located in front of the target peg 25 when joining the yarn Y by the yarn joining device 60.
[0073] As shown in FIG. 11, the control unit 94 is an electronic control unit including a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), an I/O port, a communication port, and the like. The ROM stores a program for controlling each of the traveling unit 90, the elevating unit 91, the holding unit 92, and the exchange unit 93. Further, each function in the control unit 94 is executed under the control of the CPU by loading predetermined computer software on the hardware such as the CPU and the main storage unit.
[0074] The control unit 94 controls the suction nozzle 614, the arm portion 612, and the splicer 66 so that a yarn joining process including a first setting operation, a second setting operation, and a yarn joining operation (connecting operation) is performed. Further, the control unit 94 controls the suction nozzle 614 and the arm portion 612 so that a yarn hooking process including one of a first yarn hooking operation and a second yarn hooking operation is performed.
[0075] In this embodiment, the first setting operation, the second setting operation, the yarn joining operation, the first yarn hooking operation, and the second yarn hooking operation when the yarn Y is unwound from the outer layer side of the second yarn feeding package P12 (when the yarn Y is fed from the outer layer side of the second yarn feeding package P12 to the processing portion 3) (hereinafter, referred to as a first scene) will be described.
[0076] The first setting operation of the first scene is an operation of holing the first yarn end Y1 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to the first yarn end Y1 of the first yarn feeding package P11 to the splicer 66. The second setting operation is an operation of holding the second yarn end Y2 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to set the second yarn end Y2 of the second yarn feeding package P12 to the splicer 66. The yarn joining operation is an operation of connecting the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 to each other by the splicer 66 after the first setting operation and the second setting operation.
[0077] The first yarn hooking operation in the first scene is an operation of holding the first yarn end Y1 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to lock the yarn Y of the first yarn feeding package P11 to the clip 29 before the first setting operation. The second yarn hooking operation in the first scene is an operation of holding the second yarn end Y2 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to lock the yarn Y of the second yarn feeding package P12 to the clip 29 before the second setting operation. In the first scene, any one of the first yarn hooking operation and the second yarn hooking operation is performed.
[0078] Next, in this embodiment, the first setting operation, the second setting operation, the yarn joining operation, the first yarn hooking operation, and the second yarn hooking operation when the yarn Y is unwound from the outer layer side of the first yarn feeding package P11 (the yarn Y is fed from the outer layer side of the first yarn feeding package P11 to the processing portion 3) (hereinafter, referred to as a second scene) will be described.
[0079] The first setting operation in the second scene is an operation of holding the second yarn end Y2 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to set the second yarn end Y2 of the first yarn feeding package P11 to the splicer 66. The second setting operation is an operation of holding the first yarn end Y1 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to set the first yarn end Y1 of the second yarn feeding package P12 to the splicer 66. The yarn joining operation is an operation of connecting the second yarn end Y2 of the first yarn feeding package P11 and the first yarn end Y1 of the second yarn feeding package P12 to each other by the splicer 66 after the first setting operation and the second setting operation.
[0080] The first yarn hooking operation in the second scene is an operation of holding the second yarn end Y2 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to lick the yarn Y of the first yarn feeding package P11 to the clip 29 before the first setting operation. The second yarn hooking operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so as to the yarn Y of the second yarn feeding package P12 to the clip 29 before the second setting operation. Also in the second scene, any one of the first yarn hooking operation and the second yarn hooking operation is performed.
[0081] Hereinafter, a series of operations including a yarn joining process and a yarn hooking process in the yarn joining processing device 9A will be described in detail with reference to FIGS. 10 to 15. Here, an example of a case of joining the first yarn end Y1 of the first yarn feeding package P11 supported by one peg 25 and the second yarn end Y2 of the second yarn feeding package P12 supported by the other peg 25 to each other by the yarn joining device 60 when the yarn Y is unwound from the outer layer side of the second yarn feeding package P12 (in the first scene) will be described.
[0082] When the yarn joining operation starts, as shown in FIG. 10, the yarn joining processing device 9A operates one peg 25 by the first rotation mechanism 62 and operates the other peg 25 by the second rotation mechanism 63 to rotate the adapter 8 to a position in which the suction nozzle 614 can capture the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 (step S1 of FIG. 12).
[0083] Specifically, the control unit 94 drives the first motor 622 to rotate the first yarn joining processing driver 621 engaging with the first wheel 253D of one peg 25. When the first yarn joining processing driver 621 rotates, the first yarn feeding package P11 rotates and hence the adapter 8 rotates. The control unit 94 drives the second motor 632 to rotate the second yarn joining processing driver 631 engaging with the first wheel 253D of the other peg 25. When the second yarn joining processing driver 631 rotates, the second yarn feeding package P12 rotates and hence the adapter 8 rotates. The control unit 94 controls the first motor 622 and the second motor 632 so that the adapter 8 rotates to a predetermined position on the basis of a detection result of a sensor (not shown) detecting a detection object (not shown) provided in the adapter 8.
[0084] The control unit 94 activates the suction gun 611 (step S2 of FIG. 12). Accordingly, the suction gun 611 can suck and hold the yarn Y in the suction nozzle 614. The control unit 94 controls the arm portion 612 so that the first yarn end Y1 of the first yarn feeding package P11 is captured (held) to the suction nozzle 614 (step S3 of FIG. 12). Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 is moved to the clip 29 and the yarn Y of the first yarn feeding package P11 is hooked (locked) to the clip 29 as shown in FIG. 13A (step S4 of FIG. 12: first yarn hooking operation). More specifically, the yarn Y of the first yarn feeding package P11 is locked by being sandwiched between the pair of dish plates 291 and 292 of the clip 29.
[0085] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the clip 29 and moves the suction nozzle 614 holding the first yarn end Y1 of the first yarn feeding package P11 to the first guide mechanism 67 to hook the yarn Y of the first yarn feeding package P11 to the first guide mechanism 67 as shown in FIG. 13B. The control unit 94 adjusts the rotation amount (feeding amount) of the first yarn feeding package P11 on the basis of the detection result of the potentiometer provided in the first guide mechanism 67 and draws out the yarn Y from the first yarn feeding package P11 at a predetermined tension. Further, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the first guide mechanism 67 and moves the suction nozzle 614 to the yarn joining processing mechanism 64 so that the first yarn end Y1 of the first yarn feeding package P11 is set (guided) to the yarn joining processing mechanism 64 (step S5 of FIG. 12: first setting operation).
[0086] Next, the control unit 94 captures (holds) the second yarn end Y2 of the second yarn feeding package P12 to the suction nozzle 614 (step S6 of FIG. 12). Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 holding the second yarn end Y2 of the second yarn feeding package P12 moves to the yarn joining processing mechanism 64 and the second yarn end Y2 of the second yarn feeding package P12 is set (guided) to the yarn joining processing mechanism 64 as shown in FIG. 14A (step S7 of FIG. 12: second setting operation).
[0087] Next, the control unit 94 controls the splicer 66 of the yarn joining device 60 so that the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 are joined (connected) as shown in FIG. 14B. Further, the control unit 94 controls the cutters 664 and 665 of the yarn joining device 60 so that, for example, an extra portion including a portion sucked and held by the suction nozzle 614 is cut and removed from the yarn joining processed portion of the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 (step S8 of FIG. 12: yarn joining operation (connecting operation)).
[0088] Next, the control unit 94 stops the suction gun 611 (step S9 of FIG. 12). Next, the control unit 94 controls the arm portion 612 so that the joined yarn is hooked (held) to the hook portion 615 and the hook portion 615 is moved to the outside of the yarn joining processing mechanism 64. Accordingly, as shown in FIG. 15A, the joined yarn Y is released from the locking of the yarn joining processing mechanism 64, the first guide mechanism 67, and the second guide mechanism 68 and is taken out of the yarn joining device 60 (step S10 of FIG. 12).
[0089] Next, the control unit 94 controls the first motor 622 and the second motor 632 so that the first yarn joining processing driver 621 and the second yarn joining processing driver 631 are rotationally driven to rotate the first yarn feeding package P11 and the second yarn feeding package P12 as shown in FIG. 15B. Accordingly, the slack of the joined yarn Y hooked to the clip 29 can be removed (step S11 of FIG. 12).
[0090] In the yarn joining processing device 9A of the above-described embodiment, the yarn is hooked to the clip 29 before the yarn joining process of the yarn Y, unlike the conventional sequence of operations performed by the operator. Then, a suction force is constantly applied in the suction direction to each of the yarns Y and Y of the first yarn feeding package P11 and the second yarn feeding package P12 while being held by the suction nozzle 614, and thus tension is applied to the portion of the yarn Y extending from each of the first yarn feeding package P11 and the second yarn feeding package P12 to the suction nozzle 614. Since the arm portion 612 can move the first yarn end Y1 (or the second yarn end Y2) in a taut state, the yarn Y can be moved more precisely than in a case where the first yarn end Y1 (or the second yarn end Y2) of the irregularly loosened yarn Y is moved, thus enabling the yarn to be hooked to the clip 29 with high accuracy.
[0091] Further, the yarn Y is held by the suction of the suction nozzle 614, and thus damage caused to the yarn when gripping does not occur. Additionally, in a case of sucking the yarn Y in which the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 or the yarn Y in which the first yarn end Y1 of the second yarn feeding package P12 and the second yarn end Y2 of the first yarn feeding package P11 are connected, the yarn Y is sucked by the suction nozzle 614 while being partially bent, and thus the yarn Y is damaged. However, in the configuration of the above-described embodiment, the yarn Y is held by sucking the first yarn end Y1 or the second yarn end Y2 of the first yarn feeding package P11 and the second yarn end Y2 or the first yarn end Y1 of the second yarn feeding package P12, and thus bending such as that described above does not occur. Thus, the yarn Y of the first yarn feeding package P11 and the second yarn feeding package P12 is not damaged even when held by the suction nozzle 614 . As a result, it is possible to realize automation of a series of operations including a yarn joining process and a yarn hooking process while maintaining both yarn quality and improving operation accuracy.
[0092] Although the embodiment of an aspect of the present invention has been described above, an aspect of the present invention is not necessarily limited to the above-described embodiment, and various changes can be made without departing from the gist thereof.
(First modified example)
[0093] The creel stand 20 of the above-described embodiment has been described by an example in which only the clip 29 is disposed between the pair of pegs 25 and 25 in the Y direction as shown in FIG. 3, but the present invention is not limited thereto. For example, as shown in FIG. 16, in the creel stand 20, two clips 29A and 29B may be arranged between the pair of pegs 25 and 25 in the Y direction.
[0094] That is, the creel stand 20 according to a first modified example includes the first clip (locking portion/first locking portion) 29A which is disposed at a position far from the second yarn feeding package P12 supported by the other peg 25 in relation to the first yarn feeding package P11 supported by one peg 25 and the second clip (locking portion/second locking portion) 29B which is disposed at a close position from the second yarn feeding package P12 supported by the other peg 25 in relation to the first yarn feeding package P11 supported by one peg 25. The first clip 29A of the creel stand 20 according to the first modified example is disposed on the side of one peg 25 supporting the first yarn feeding package P11 in relation to the center between the pair of pegs 25 and 25 and the second clip 29B is disposed on the side of the other peg 25 supporting the second yarn feeding package P12 in relation to the center between the pair of pegs 25 and 25.
[0095] The control unit 94 of the yarn joining processing device 9A according to the first modified example controls the suction nozzle 614, the arm portion 612, and the splicer 66 to perform a yarn joining process including a first setting operation, a second setting operation, and a yarn joining operation (connecting operation). Since the first setting operation, the second setting operation, and the yarn joining operation in the first scene (when the yarn Y is unwound from the outer layer side of the second yarn feeding package P12) and the second scene (the yarn Y is unwound from the outer layer side of the first yarn feeding package P11) are the same as those of the above-described embodiment, the detailed description will be omitted. In the yarn joining processing device 9A according to the first modified example, unlike the above-described embodiment, the control unit 94 controls the suction nozzle 614 and the arm portion 612 so that the yarn hooking process including both the first yarn hooking operation and the second yarn hooking operation in each of the first scene and the second scene is performed.
[0096] The first yarn hooking operation in the first scene is an operation of holding the first yarn end Y1 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the first yarn feeding package P11 is locked to the first clip 29A before the first setting operation. The second yarn hooking operation in the first scene is an operation of holding the second yarn end Y2 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the second yarn feeding package P12 is locked to the second clip 29B before the second setting operation.
[0097] The first yarn hooking operation in the second scene is an operation of holding the second yarn end Y2 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the first yarn feeding package P11 is locked to the first clip 29A before the first setting operation. The second yarn hooking operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the second yarn feeding package P12 is locked to the second clip 29B before the second setting operation.
[0098] Additionally, also in the configuration including the first clip 29A and the second clip 29B, only one of the first yarn hooking operation and the second yarn hooking operation in each of the first scene and the second scene may be performed.
[0099] Hereinafter, a series of operations including the yarn joining process and the yarn hooking process in the yarn joining processing device 9A will be described with reference to FIGS. 17 to 19. Also here, an example of a case of joining the first yarn end Y1 of the first yarn feeding package P11 supported by one peg 25 and the second yarn end Y2 of the second yarn feeding package P12 supported by the other peg 25 to each other by the yarn joining device 60 when the yarn Y is unwound from the outer layer side of the second yarn feeding package P12 (in the first scene) will be described.
[0100] Similarly to the above-described embodiment, the control unit 94 drives the first motor 622 and the second motor 632 to rotate the adapter 8 (the first yarn feeding package P11 and the second yarn feeding package P12) to a position in which the suction nozzle 614 can capture the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 (step S21 of FIG. 17).
[0101] The control unit 94 activates the suction gun 611 (step S22 of FIG. 17). Accordingly, the suction gun 611 can suck and hold the yarn Y in the suction nozzle 614. The control unit 94 controls the arm portion 612 so that the first yarn end Y1 of the first yarn feeding package P11 is captured (held) to the suction nozzle 614 (step S23 of FIG. 17). Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 is moved to the first clip 29A and the yarn Y of the first yarn feeding package P11 is hooked to the first clip 29A as shown in FIG. 18A (step S24 of FIG. 17: first yarn hooking operation).
[0102] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the first clip 29A so that the suction nozzle 614 holding the first yarn end Y1 of the first yarn feeding package P11 is moved to the first guide mechanism 67 and the yarn Y of the first yarn feeding package P11 is hooked to the first guide mechanism 67 as shown in FIG. 18A. The control unit 94 adjusts the rotation amount (feeding amount) of the first yarn feeding package P11 on the basis of the detection result of the potentiometer provided in the first guide mechanism 67 and draws out the yarn Y from the first yarn feeding package P11 at a predetermined tension. Further, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the first guide mechanism 67 so that the suction nozzle 614 is moved to the yarn joining processing mechanism 64 and the first yarn end Y1 of the first yarn feeding package P11 is set (guided) to the yarn joining processing mechanism 64 (step S25 of FIG. 17: first setting operation).
[0103] Next, the control unit 94 captures (holds) the second yarn end Y2 of the second yarn feeding package P12 by the suction nozzle 614 (step S26 of FIG. 17). Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 is moved to the second clip 29B and the yarn Y of the second yarn feeding package P12 is hooked to the second clip 29B as shown in FIG. 18B (step S27 of FIG. 17: second yarn hooking operation).
[0104] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the second yarn feeding package P12 is hooked to the second clip 29B so that the suction nozzle 614 holding the second yarn end Y2 is moved to the second guide mechanism 68 and the yarn Y of the second yarn feeding package P12 is hooked to the second guide mechanism 68 as shown in FIG. 18B. The control unit 94 adjusts the rotation amount (feeding amount) of the second yarn feeding package P12 on the basis of the detection result of the potentiometer provided in the second guide mechanism 68 and draws out the yarn Y from the second yarn feeding package P12 at a predetermined tension. Further, the control unit 94 controls the arm portion 612 while the yarn Y of the second yarn feeding package P12 is hooked to the second guide mechanism 68 so that the suction nozzle 614 is moved to the yarn joining processing mechanism 64 and the second yarn end Y2 of the second yarn feeding package P12 is set (guided) to the yarn joining processing mechanism 64 (step S28 of FIG. 17: second setting operation).
[0105] Next, the control unit 94 controls the splicer 66 of the yarn joining device 60 so that the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 are joined (connected). Further, the control unit 94 controls the cutters 664 and 665 of the yarn joining device 60 so that, for example, an extra portion including a portion sucked and held by the suction nozzle 614 is cut and removed from the yarn joining processed portion of the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 (step S29 of FIG. 17: yarn joining operation (connecting operation)).
[0106] Next, the control unit 94 stops the suction gun 611 (step S30 of FIG. 17). Next, the control unit 94 controls the arm portion 612 so that the joined yarn is hooked (held) by the hook portion 615 and moves the hook portion 615 to the outside of the yarn joining processing mechanism 64. Accordingly, as shown in FIG. 19A, the joined yarn Y is released from the locking of the yarn joining processing mechanism 64, the first guide mechanism 67, and the second guide mechanism 68 and is taken out of the yarn joining device 60 (step S31 of FIG. 17).
[0107] Next, the control unit 94 controls the first motor 622 and the second motor 632 so that the first yarn joining processing driver 621 and the second yarn joining processing driver 631 are rotationally driven to rotate the first yarn feeding package P11 and the second yarn feeding package P12 as shown in FIG. 19B. Accordingly, the slack of the joined yarn Y hooked to the clip 29 can be removed (step S32 of FIG. 17).
[0108] In the yarn joining processing device 9A and the yarn feeding device 100 according to the first modified example, since the yarn Y is locked to both the first clip 29A and the second clip 29B by the first yarn hooking operation and the second yarn hooking operation, a more stable locked state can be obtained.
(Second modified example)
[0109] As another modified example of the above-described embodiment, for example, as shown in FIG. 20, in the creel stand 20, four clips 29C, 29D, 29E, and 29F may be arranged between the pair of pegs 25 and 25 in the Y direction.
[0110] That is, the creel stand 20 according to a second modified example includes the pair of first inner layer side clip (locking portion/first locking portion/first inner layer side locking portion) 29C and the first outer layer side clip (locking portion/first locking portion/first outer layer side locking portion) 29D which are arranged at positions far from the second yarn feeding package P12 supported by the other peg 25 in relation to the first yarn feeding package P11 supported by one peg 25 and are provided to respectively correspond to the second yarn end Y2 of the first yarn feeding package P11 and the first yarn end Y1 of the first yarn feeding package P11 and the pair of second inner layer side clip (locking portion/second locking portion/second inner layer side locking portion) 29E and the second outer layer side clip (locking portion/second locking portion/second outer layer side locking portion) 29F which are arranged at positions close to the second yarn feeding package P12 supported by the other peg 25 in relation to the first yarn feeding package P11 supported by one peg 25 and are provided to respectively correspond to the second yarn end Y2 of the second yarn feeding package P12 and the first yarn end Y1 of the second yarn feeding package P12.
[0111] The first inner layer side clip 29C, the first outer layer side clip 29D, the second inner layer side clip 29E, and the second outer layer side clip 29F of the second modified example are fixed to the partition dish plate 24 through a bracket 24A. Further, the first inner layer side clip 29C and the first outer layer side clip 29D have different orientations (directions of the pair of dish plates 291 and 292). Further, the second inner layer side clip 29E and the second outer layer side clip 29F have different orientations.
[0112] The control unit 94 of the yarn joining processing device 9A according to the second modified example controls the suction nozzle 614, the arm portion 612, and the splicer 66 so that a yarn joining process including a first yarn hooking operation, a second yarn hooking operation, a first setting operation, a second setting operation, and a yarn joining operation (connecting operation) is performed.
[0113] The first yarn hooking operation in the first scene (when the yarn Y is unwound from the outer layer side of the second yarn feeding package P12) is an operation of holding the first yarn end Y1 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the first yarn feeding package P11 is locked to the first outer layer side clip 29D. The second yarn hooking operation in the first scene is an operation of holding the second yarn end Y2 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the second yarn feeding package P12 is locked to the second inner layer side clip 29E. Additionally, in the first scene, both the first yarn hooking operation and the second yarn hooking operation are performed.
[0114] The first setting operation in the first scene is an operation of holding the first yarn end Y1 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the first yarn end Y1 of the first yarn feeding package P11 is set to the yarn joining processing mechanism 64. The second setting operation in the first scene is an operation of holding the second yarn end Y2 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the second yarn end Y2 of the second yarn feeding package P12 is set to the yarn joining processing mechanism 64. The yarn joining operation in the first scene is an operation of connecting the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 to each other.
[0115] The first yarn hooking operation in the second scene (when the yarn Y is unwound from the outer layer side of the first yarn feeding package P11) is an operation of holding the second yarn end Y2 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the first yarn feeding package P11 is locked to the first inner layer side clip 29C. The second yarn hooking operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the yarn Y of the second yarn feeding package P12 is locked to the second outer layer side clip 29F. Additionally, in the second scene, both the first yarn hooking operation and the second yarn hooking operation are performed.
[0116] The first setting operation in the second scene is an operation of holding the second yarn end Y2 of the first yarn feeding package P11 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the second yarn end Y2 of the first yarn feeding package P11 is set to the yarn joining processing mechanism 64. The second setting operation in the second scene is an operation of holding the first yarn end Y1 of the second yarn feeding package P12 by the suction nozzle 614 and moving the suction nozzle 614 by the arm portion 612 so that the first yarn end Y1 of the second yarn feeding package P12 is set to the yarn joining processing mechanism 64. The yarn joining operation in the second scene is an operation of connecting the second yarn end Y2 of the first yarn feeding package P11 and the first yarn end Y1 of the second yarn feeding package P12 to each other.
[0117] Additionally, also in the configuration including the first inner layer side clip 29C, the first outer layer side clip 29D, the second inner layer side clip 29E, and the second outer layer side clip 29F, only one of the first yarn hooking operation and the second yarn hooking operation in each of the first scene and the second scene may be performed.
[0118] Hereinafter, a series of operations including the yarn joining process and the yarn hooking process in the yarn joining processing device 9A will be described in detail with reference to FIGS. 21 to 22. Also here, similarly to the above-described embodiment, an example of a case of joining the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 to each other by the yarn joining device 60 when the yarn Y is unwound from the outer layer side of the second yarn feeding package P12 (in the first scene) will be described.
[0119] Similarly to the above-described embodiment, the control unit 94 drives the first motor 622 and the second motor 632 to rotate the adapter 8 (the first yarn feeding package P11 and the second yarn feeding package P12) to a position in which the suction nozzle 614 can capture the first yarn end Y1 of the first yarn feeding package P11 and the second yarn end Y2 of the second yarn feeding package P12 (step S41 of FIG. 21). The control unit 94 activates the suction gun 611 (step S42 of FIG. 21). Accordingly, the suction gun 611 can suck and hold the yarn Y in the suction nozzle 614. The control unit 94 controls the arm portion 612 so that the first yarn end Y1 of the first yarn feeding package P11 is captured (held) to the suction nozzle 614 (step S43 of FIG. 21). Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 is moved to the first outer layer side clip 29D and the yarn Y of the first yarn feeding package P11 is hooked to the first outer layer side clip 29D as shown in FIG. 22A (step S44 of FIG. 21: first yarn hooking operation).
[0120] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the first outer layer side clip 29D so that the suction nozzle 614 holding the first yarn end Y1 of the first yarn feeding package P11 is moved to the first guide mechanism 67 and the yarn Y of the first yarn feeding package P11 is hooked to the first guide mechanism 67. The control unit 94 adjusts the rotation amount (feeding amount) of the first yarn feeding package P11 on the basis of the detection result of the potentiometer provided in the first guide mechanism 67 and draws out the yarn Y from the first yarn feeding package P11 at a predetermined tension. Further, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the first guide mechanism 67 so that the suction nozzle 614 is moved to the yarn joining processing mechanism 64 and the first yarn end Y1 of the first yarn feeding package P11 is set (guided) to the yarn joining processing mechanism 64 (step S45 of FIG. 21: first setting operation).
[0121] Next, the control unit 94 captures (holds) the second yarn end Y2 of the second yarn feeding package P12 by the suction nozzle 614 (step S46 of FIG. 21). Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 is moved to the second inner layer side clip 29E and the yarn Y of the second yarn feeding package P12 is hooked to the second inner layer side clip 29E (step S47 of FIG. 21: second yarn hooking operation).
[0122] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the second yarn feeding package P12 is hooked to the second inner layer side clip 29E so that the suction nozzle 614 holding the second yarn end Y2 of the second yarn feeding package P12 is moved to the second guide mechanism 68 and the yarn Y of the second yarn feeding package P12 is hooked to the second guide mechanism 68. The control unit 94 adjusts the rotation amount (feeding amount) of the second yarn feeding package P12 on the basis of the detection result of the potentiometer provided in the second guide mechanism 68 and draws out the yarn Y from the second yarn feeding package P12 at a predetermined tension. Further, the control unit 94 controls the arm portion 612 while the yarn Y of the second yarn feeding package P12 is hooked to the second guide mechanism 68 so that the suction nozzle 614 is moved to the yarn joining processing mechanism 64 and the second yarn end Y2 of the second yarn feeding package P12 is set (guided) to the yarn joining processing mechanism 64 (step S48 of FIG. 21: second setting operation). Additionally, since the subsequent processes (step S49 to step S52 of FIG. 21) are the same as step S8 to step S11 of FIG. 12 of the above-described embodiment, the description will be omitted here.
[0123] Additionally, when the yarn Y is unwound from the outer layer side of the first yarn feeding package P11 (when the yarn Y is fed from the outer layer side of the first yarn feeding package P11 to the processing portion 3) (the second scene), the yarn joining device 60 joins the first yarn end Y1 of the second yarn feeding package P12 and the second yarn end Y2 of the first yarn feeding package P11 to each other.
[0124] Specifically, the control unit 94 controls the arm portion 612 so that the second yarn end Y2 of the first yarn feeding package P11 is captured (held) to the suction nozzle 614. Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 is moved to the first inner layer side clip 29C and the yarn Y of the first yarn feeding package P11 is hooked to the first inner layer side clip 29C as shown in FIG. 22B (first yarn hooking operation).
[0125] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the first inner layer side clip 29C so that the suction nozzle 614 holding the second yarn end Y2 of the first yarn feeding package P11 is moved to the first guide mechanism 67 and the yarn Y of the first yarn feeding package P11 is hooked to the first guide mechanism 67. The control unit 94 adjusts the rotation amount (feeding amount) of the first yarn feeding package P11 on the basis of the detection result of the potentiometer provided in the first guide mechanism 67 and draws out the yarn Y from the first yarn feeding package P11 at a predetermined tension. Further, the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn feeding package P11 is hooked to the first guide mechanism 67 so that the suction nozzle 614 is moved to the yarn joining processing mechanism 64 and the second yarn end Y2 of the first yarn feeding package P11 is set (guided) to the yarn joining processing mechanism 64 (first setting operation).
[0126] Next, the control unit 94 captures (holds) the first yarn end Y1 of the second yarn feeding package P12 by the suction nozzle 614. Next, the control unit 94 controls the arm portion 612 so that the suction nozzle 614 is moved to the second outer layer side clip 29F and the yarn Y of the second yarn feeding package P12 is hooked to the second outer layer side clip 29F (second yarn hooking operation).
[0127] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the second yarn feeding package P12 is hooked to the second outer layer side clip 29F so that the suction nozzle 614 holding the first yarn end Y1 of the second yarn feeding package P12 is moved to the second guide mechanism 68 and the yarn Y of the second yarn feeding package P12 is hooked to the second guide mechanism 68. The control unit 94 adjusts the rotation amount (feeding amount) of the second yarn feeding package P12 on the basis of the detection result of the potentiometer provided in the second guide mechanism 68 and draws out the yarn Y from the second yarn feeding package P12 at a predetermined tension. Further, the control unit 94 controls the arm portion 612 while the yarn Y of the second yarn feeding package P12 is hooked to the second guide mechanism 68 so that the suction nozzle 614 is moved to the yarn joining processing mechanism 64 and the first yarn end Y1 of the second yarn feeding package P12 is set (guided) to the yarn joining processing mechanism 64 (second setting operation). Hereinafter, since the processes until removing the slack of the yarn Y are the same as above, the description will be omitted.
[0128] In the yarn joining processing device 9A and the yarn feeding device 100 according to the second modified example, the clips (the first inner layer side clip 29C, the first outer layer side clip 29D, the second inner layer side clip 29E, and the second outer layer side clip 29F) are provided to respectively correspond to the yarn Y on the inner layer side of the first yarn feeding package P11, the yarn Y on the outer layer side of the first yarn feeding package P11, the yarn Y on the inner layer side of the second yarn feeding package P12, and the yarn Y on the outer layer side of the second yarn feeding package P12. Accordingly, the clips can be provided at more appropriate positions and orientations. As a result, the accuracy and stability of the yarn hook in each clip can be further improved.
(Other modified examples)
[0129] The creel stand 20 of the embodiment and modified examples described above has been described by an example in which the clip 29 is disposed at the center of the pair of pegs 25, but the clip 29 may be disposed at a position close to any one of the pair of pegs 25.
[0130] In the yarn joining processing device 9A of the embodiment and modified examples described above, an example in which the yarn Y is locked to one locking portion by one yarn hooking operation has been described, but the yarn Y may be locked to a plurality of locking portions by one yarn hooking operation.
[0131] In the embodiment and modified examples described above, the suction gun 611 including the suction nozzle 614 and the hook portion 615 has been described as an example of the yarn hooking mechanism 61 guiding the yarn Y to each of the clips 29 and 29A to 29F or guiding the yarn Y to the yarn joining processing mechanism 64, but the hook portion 615 may not be provided. In this case, the joined yarn Y may be taken out of the yarn joining device 60 by retracting the yarn joining device 60 instead of taking the joined yarn Y out of the yarn joining device 60 by moving the hook portion 615.
[0132] In the embodiment and modified examples described above, an example in which the control unit 94 comprehensively controlling the traveling unit 90, the elevating unit 91, the holding unit 92, and the exchange unit 93 of the package exchange device 9 controls the yarn joining device 60 has been described, but the present invention is not limited thereto. The control unit 94 may be provided exclusively for controlling the yarn joining device 60. Further, the control unit 94 may not be provided in the package exchange device 9 and may be provided at a position separated from the package exchange device 9 to communicate in a wired or wireless manner.
[0133] The yarn joining processing device 9A of the embodiment and modified examples described above has been described by an example in which the first rotation mechanism 62 and the second rotation mechanism 63 are provided therein, but the yarn joining device 60 without the first rotation mechanism 62 and the second rotation mechanism 63 may be provided. In this case, for example, the operation of rotating the yarn feeding package P1 (step S1, step S5, step S7, and step S11 of FIG. 12) is omitted in the yarn joining processing device 9A of the above-described embodiment. Also in the above-described modified examples, the operation of rotating the yarn feeding package P1 is omitted in the yarn joining processing device 9A of the above-described embodiment.
[0134] In the embodiment and modified examples described above, the false-twist texturing machine 1 has been described as an example of the yarn texturing device, but the present invention is not limited thereto. That is, a device that performs plying processing (false-twist texturing) has been described as an example of the processing portion 3, but a device that performs non-plying processing (air-jet texturing) may be used.
REFERENCE SIGNS LIST
[0135] 1: false-twist texturing machine, 20: creel stand (yarn feeding stand), 25: peg (first mounting portion/second mounting portion), 29: clip (locking portion), 29A: first clip (locking portion/first locking portion), 29B: second clip (locking portion/second locking portion), 29C: first inner layer side clip (locking portion/first locking portion/first inner layer side locking portion), 29D: first outer layer side clip (locking portion/first locking portion/first outer layer side locking portion), 29E: second inner layer side clip (locking portion/second locking portion/second inner layer side locking portion), 29F: second outer layer side clip (locking portion/second locking portion/second outer layer side locking portion), 60: yarn joining device, 611: suction gun, 612: arm portion (moving portion), 613: suction pipe, 614: suction nozzle (suction holding portion), 64: yarn joining processing mechanism (connecting portion), 66: splicer, 9: package exchange device, 9A: yarn joining processing device, 94: control unit, 100: yarn feeding device, P1: yarn feeding package, P11: first yarn feeding package, P12: second yarn feeding package, Y: yarn.
1. A yarn joining processing device (9A) for connecting a yarn end of a first yarn feeding
package (P11) mounted on a yarn feeding stand (20) to a yarn end of a second yarn
feeding package (P12) and locking a connected yarn (Y) to at least one locking portion
(29) provided in the yarn feeding stand (20), the yarn joining processing device (9A)
comprising:
a suction holding portion (614) which sucks the yarn (Y) and holds the yarn (Y);
a moving portion (612) which moves the suction holding portion (614);
a connecting portion (64) which connects the yarn end of the first yarn feeding package (P11) to the yarn end of the second yarn feeding package (P12); and
a control unit (94) which controls the suction holding portion (614), the moving portion (612), and the connecting portion (64),
wherein the control unit (94) controls the suction holding portion (614), the moving portion (612), and the connecting portion (64) so as to perform a yarn joining process including a first setting operation of holding the yarn end of the first yarn feeding package (P11) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to set the yarn end of the first yarn feeding package (P11) to the connecting portion (64), a second setting operation of holding the yarn end of the second yarn feeding package (P12) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to set the yarn end of the second yarn feeding package (P12) to the connecting portion (64), and a connecting operation of connecting the yarn end of the first yarn feeding package (P11) to the yarn end of the second yarn feeding package (P12) by the connecting portion (64) after the first setting operation and the second setting operation, and
wherein the control unit (94) controls the suction holding portion (614) and the moving portion (612) to perform a yarn hooking process including at least one of a first yarn hooking operation of holding the yarn end of the first yarn feeding package (P11) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to lock the yarn (Y) of the first yarn feeding package (P11) to the locking portion (29) before the first setting operation and a second yarn hooking operation of holding the yarn end of the second yarn feeding package (P12) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to lock the yarn (Y) of the second yarn feeding package (P12) to the locking portion (29) before the second setting operation.
2. The yarn joining processing device (9A) according to claim 1,
wherein the locking portion (29) includes a first locking portion (29A) and a second locking portion (29B),
wherein the first yarn hooking operation is an operation of moving the suction holding portion (614) so as to lock the yarn (Y) of the first yarn feeding package (P11) to the first locking portion (29A), and
wherein the second yarn hooking operation is an operation of moving the suction holding portion (614) so as to lock the yarn (Y) of the second yarn feeding package (P12) to the second locking portion (29B).
3. The yarn joining processing device (9A) according to claim 2,
wherein the first locking portion (29A) includes a first inner layer side locking portion (29C) and a first outer layer side locking portion (29D),
wherein the second locking portion (29B) includes a second inner layer side locking portion (29E) and a second outer layer side locking portion (29F),
wherein the first yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the inner layer side of the first yarn feeding package (P11) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to lock the yarn (Y) of the first yarn feeding package (P11) to the first inner layer side locking portion (29C),
wherein the second yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the outer layer side of the second yarn feeding package (P12) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to lock the yarn (Y) of the second yarn feeding package (P12) to the second outer layer side locking portion (29F),
wherein the first setting operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the inner layer side of the first yarn feeding package (P11) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to set the yarn end on the inner layer side of the first yarn feeding package (P11) to the connecting portion (64),
wherein the second setting operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the outer layer side of the second yarn feeding package (P12) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to set the yarn end on the outer layer side of the second yarn feeding package (P12) to the connecting portion (64),
wherein the connecting operation when the yarn is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of connecting the yarn end on the inner layer side of the first yarn feeding package (P11) to the yarn end on the outer layer side of the second yarn feeding package (P12),
wherein the first yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the outer layer side of the first yarn feeding package (P11) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to lock the yarn of the first yarn feeding package (P11) to the first outer layer side locking portion (29D),
wherein the second yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the inner layer side of the second yarn feeding package (P12) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to lock the yarn of the second yarn feeding package (P12) to the second inner layer side locking portion (29E),
wherein the first setting operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the outer layer side of the first yarn feeding package (P11) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to set the yarn end on the outer layer side of the first yarn feeding package (P11) to the connecting portion (64),
wherein the second setting operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the inner layer side of the second yarn feeding package (P12) by the suction holding portion (614) and moving the suction holding portion (614) by the moving portion (612) so as to set the yarn end on the inner layer side of the second yarn feeding package (P12) to the connecting portion (64) , and
wherein the connecting operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of connecting the yarn end on the outer layer side of the first yarn feeding package (P11) to the yarn end on the inner layer side of the second yarn feeding package (P12).
4. A yarn feeding device comprising:
a yarn feeding stand (20) which includes first mounting portions (25) each used to mount a first yarn feeding package (P11) thereon, second mounting portions (25) each used to mount a second yarn feeding package (P12) thereon, and locking portions (29) each locking a yarn (Y); and
a yarn joining processing device (9A) which connects a yarn end of the first yarn feeding package (P11) mounted on each of the first mounting portions (25) to a yarn end of the second yarn feeding package (P12) mounted on each of the second mounting portions (25) and locks the connected yarn (Y) to each of the locking portions (29),
wherein the locking portions (29) each include at least one first locking portion (29A) which locks the yarn (Y) drawn out of the first yarn feeding package (P11) and at least one second locking portion (29B) which locks the yarn (Y) drawn out of the second yarn feeding package (P12),
wherein the yarn joining processing device (9A) includes suction holding portions (614) which each hold the yarn (Y) by sucking the yarn (Y), moving portions (612) which each move the suction holding portion (614), connecting portions (64) which each connect the yarn end of the first yarn feeding package (P11) to the yarn end of the second yarn feeding package (P12), and a control unit (94) which controls the connecting portions (64), the suction holding portions (614), and the moving portions (612),
wherein the control unit (94) controls the suction holding portions (614), the moving portions (612), and the connecting portions (64) so as to perform a yarn joining process including a first setting operation of holding the yarn end of the first yarn feeding package (P11) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to set the yarn end of the first yarn feeding package (P11) to each of the connecting portions (64), a second setting operation of holding the yarn end of the second yarn feeding package (P12) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to set the yarn end of the second yarn feeding package (P12) to each of the connecting portions (64), and a connecting operation of connecting the yarn end of the first yarn feeding package (P11) to the yarn end of the second yarn feeding package (P12) by each of the connecting portions (64) after the first setting operation and the second setting operation, and
the control unit (94) controls each of the suction holding portions (614) and each of the moving portions (612) to perform a yarn hooking process including at least one of a first yarn hooking operation of holding the yarn end of the first yarn feeding package (P11) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to lock the yarn (Y) of the first yarn feeding package (P11) to the first locking portion (29A) before the first setting operation and a second yarn hooking operation of holding the yarn end of the second yarn feeding package (P12) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to lock the yarn (Y) of the second yarn feeding package (P12) to the second locking portion (29B) before the second setting operation.
5. The yarn feeding device according to claim 4,
wherein the first locking portion (29A) is disposed on the side of each of the first mounting portions (25) in relation to the center between the first mounting portions (25) and the second mounting portions (25), and
wherein the second locking portion (29B) is disposed on the side of each of the second mounting portions (25) in relation to the center between the first mounting portions (25) and the second mounting portions (25).
6. The yarn feeding device according to claim 4 or 5,
wherein the first locking portion (29A) includes a first inner layer side locking portion (29C) and a first outer layer side locking portion (29D),
wherein the second locking portion (29B) includes a second inner layer side locking portion (29E) and a second outer layer side locking portion (29F),
wherein the first yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the inner layer side of the first yarn feeding package (P11) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to lock the yarn (Y) of the first yarn feeding package (P11) to the first inner layer side locking portion (29C),
wherein the second yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the outer layer side of the second yarn feeding package (P12) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to lock the yarn (Y) of the second yarn feeding package (P12) to the second outer layer side locking portion (29F),
wherein the first setting operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the inner layer side of the first yarn feeding package (P11) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to set the yarn end on the inner layer side of the first yarn feeding package (P11) to each of the connecting portions (64),
wherein the second setting operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of holding the yarn end on the outer layer side of the second yarn feeding package (P12) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to set the yarn end on the outer layer side of the second yarn feeding package (P12) to each of the connecting portions (64),
wherein the connecting operation when the yarn (Y) is unwound from the outer layer side of the first yarn feeding package (P11) is an operation of connecting the yarn end on the inner layer side of the first yarn feeding package (P11) to the yarn end on the outer layer side of the second yarn feeding package (P12),
wherein the first yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the outer layer side of the first yarn feeding package (P11) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to lock the yarn of the first yarn feeding package (P11) to the first outer layer side locking portion (29D),
wherein the second yarn hooking operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the inner layer side of the second yarn feeding package (P12) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to lock the yarn of the second yarn feeding package (P12) to the second inner layer side locking portion (29E),
wherein the first setting operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the outer layer side of the first yarn feeding package (P11) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to set the yarn end on the outer layer side of the first yarn feeding package (P11) to each of the connecting portions (64),
wherein the second setting operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of holding the yarn end on the inner layer side of the second yarn feeding package (P12) by each of the suction holding portions (614) and moving each of the suction holding portions (614) by each of the moving portions (612) so as to set the yarn end on the inner layer side of the second yarn feeding package (P12) to each of the connecting portions (64), and
wherein the connecting operation when the yarn (Y) is unwound from the outer layer side of the second yarn feeding package (P12) is an operation of connecting the yarn end on the outer layer side of the first yarn feeding package (P11) to the yarn end on the inner layer side of the second yarn feeding package (P12).
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.
Patent documents cited in the description