FALSE-TWIST TEXTURING MACHINE

Abstract

 An object of the present invention is to achieve easy yarn threading to a yarn running path by means of a suction gun, the yarn running path being formed in a heater of a false-twist texturing machine.
A false-twist texturing machine 1 configured to false-twist a yarn includes: a heater 19 in which a yarn running path 30 is provided, a yarn running in the yarn running path 30; a suction gun 50 used for threading the yarn to the yarn running path 30; and a hook member 40 on which the suction gun 50 is hooked to be swingable. As a hooking portion 54 provided in the suction gun 50 is hooked on the hook member 40, the suction gun 50 is swung about the hook member 40 by its own weight so that a sucking unit 51 provided at a leading end of the suction gun 50 is engaged with an outlet portion 32 of the yarn running path 30.

Description

BACKGROUND OF THE INVENTION

[0001] The present invention relates to a false-twist texturing machine configured to false-twist a yarn.

[0002] For example, Patent Literature 1 (Japanese Laid-Open Utility Model Publication No. H6-33976) discloses a method of threading a yarn to a secondary heater of a false-twist texturing machine. The secondary heater is provided with a yarn running path (i.e., pipe in Patent Literature 1) extending in an up-down direction. It is difficult to thread a yarn to this yarn running path. To solve this problem, a sucking unit provided at the leading end of a suction gun is engaged with an outlet of the yarn running path. With this arrangement, yarn threading is performed for the yarn running path in such a way that the yarn is sucked by the suction gun. In the yarn threading, the suction gun is fixed to a predetermined holder.

SUMMARY OF THE INVENTION

[0003] However, when the suction gun is not properly fixed to the holder, the sucking unit of the suction gun is not engaged with the outlet of the yarn running path. As a result, the yarn threading cannot be properly performed. It is laborious to finely adjust the position of the suction gun fixed to the holder. Furthermore, the holder is deformed by forcibly moving the suction gun which is not properly fixed.

[0004] The present invention has been made in view of this problem. An object of the present invention is to achieve easy yarn threading to a yarn running path by means of a suction gun, the yarn running path being formed in a heater of a false-twist texturing machine.

[0005] The present invention relates to a false-twist texturing machine configured to false-twist a yarn, the false-twist texturing machine comprising: a heater in which at least one yarn running path is formed, the yarn running in the at least one yarn running path; a suction gun used for threading the yarn to the at least one yarn running path; and at least one hook member on which the suction gun is hooked to be swingable, and when a hooking portion provided in the suction gun is hooked on the at least one hook member, the suction gun being swung about the at least one hook member by the weight of the suction gun so that a sucking unit provided at a leading end of the suction gun is engaged with an outlet portion of the at least one yarn running path.

[0006] According to the present invention, as the hooking portion of the suction gun is hooked on the at least one hook member, the suction gun is swung by its own weight so that the sucking unit of the suction gun is engaged with the outlet portion of the at least one yarn running path. With this arrangement, the suction gun is not required to be firmly fixed. Even if the sucking unit is not properly engaged with the outlet portion, a position of the suction gun is easily adjustable because the suction gun is only hooked on the at least one hook member. Therefore, the present invention achieves easy yarn threading to the at least one yarn running path by means of the suction gun, the at least one yarn running path being formed in the heater of the false-twist texturing machine.

[0007] In the present invention, preferably, yarn running paths are formed in the heater to be aligned in a predetermined arrangement direction, and the at least one hook member extends in the arrangement direction.

[0008] With this arrangement, only one hook member is needed for the yarn running paths. This reduces the number of components.

[0009] In the present invention, preferably, the at least one hook member is a cylindrical pipe member extending in the arrangement direction.

[0010] The at least one hook member is strengthened with low cost by using the pipe member as the at least one hook member.

[0011] In the present invention, preferably, the at least one hook member includes positioning portions for positioning the suction gun, the positioning portions being provided to correspond to the respective yarn running paths.

[0012] By providing the above-described positioning portions, the suction gun is easily positioned in the arrangement direction even when the at least one hook member which is long in the arrangement direction is used.

[0013] In the present invention, preferably, the positioning portions are concave portions formed on a surface of the at least one hook member, and the hooking portion is able to be hooked on any of the concave portions.

[0014] By providing the above-described positioning portions, the suction gun is further reliably positioned.

[0015] In the present invention, preferably, the false-twist texturing machine further includes one or more hook member, yarn running paths are formed in the heater to be aligned in a predetermined arrangement direction, and the hook members are provided to correspond to the respective yarn running paths and to be aligned in the arrangement direction.

[0016] Each hook member provided to correspond to one of the respective yarn running paths can function as a positioning member.

[0017] In the present invention, preferably, a position of the hooking portion is adjustable in a longitudinal direction of the suction gun.

[0018] With this arrangement, a distance between the hooking portion and the sucking unit is easily adjustable in the suction gun. Therefore, the sucking unit can be certainly engaged with the outlet portion.

[0019] In the present invention, preferably, a guider is provided for guiding the sucking unit to the outlet portion when the suction gun is swung.

[0020]  Such a guider allows the sucking unit of the suction gun to be guided to the outlet portion. Therefore, the sucking unit can be certainly engaged with the outlet portion.

[0021] In the present invention, preferably, the sucking unit is tapered toward a leading end of the sucking unit, and a diameter of an inner passage of the outlet portion increases toward a leading end of the outlet portion.

[0022] Because of this, the sucking unit of the suction gun is further reliably and smoothly engaged with the outlet portion.

[0023] In the present invention, preferably, each of the yarn running paths extends in an up-down direction, and a lower end portion of each of the yarn running paths is the outlet portion.

[0024] In this case, the outlet portion of each of the yarn running paths may be placed close to feet of an operator. This makes yarn threading to each of the yarn running paths difficult. Therefore, the present invention in which (i) fixation of the suction gun is not required and (ii) the suction gun is only hooked on any hook member is particularly effective.

[0025] In the present invention, preferably, a working bench on which an operator stands at a time when the yarn is threaded to each of the yarn running paths is provided, and the at least one hook member is provided below an upper surface of the working bench.

[0026] When the at least one hook member is provided above the upper surface of the working bench, the operator tends to perform operations at an upper portion of the heater while using the at least one hook member as a step. As a result, the at least one hook member may be damaged. In this regard, when the at least one hook member is preferably provided below the upper surface of the working bench as described above, the at least one hook member is unlikely to be used as a step.

[0027] In the present invention, preferably, a working bench on which an operator stands at a time when the yarn is threaded to each of the yarn running paths is provided, a wall portion is provided at one edge portion of the working bench to extend upward from an upper surface of the working bench, the one edge portion being on the heater side, and the at least one hook member is provided below an upper end of the wall portion.

[0028] When the at least one hook member is provided above the upper end of the wall portion, the operator tends to perform operations at an upper portion of the heater while using the at least one hook member as a step. As a result, the at least one hook member may be damaged. In this regard, when the at least one hook member is preferably provided below the upper end of the wall portion as described above, the at least one hook member is unlikely to be used as a step.

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 

FIG. 1 is a schematic diagram of a false-twist texturing machine of an embodiment of the present invention.

FIG. 2 shows a second heater when viewed from a working space.

FIG. 3 is a side view showing a state immediately after a suction gun is hooked on a hook member.

FIG. 4 is a side view showing a state in which a sucking unit of the suction gun is engaged with an outlet portion of a yarn running path.

FIG. 5(a) is a cross section of the sucking unit of the suction gun before the sucking unit is engaged with the outlet portion of the yarn running path, and FIG. 5(b) is a cross section of the sucking unit of the suction gun after the sucking unit is engaged with the outlet portion of the yarn running path.

FIG. 6 is a perspective view of a hook member in a modification.

FIG. 7 is a perspective view of a hook member in another modification.

FIG. 8 is a perspective view of a hook member in another modification.

FIG. 9 is a side view of a hooking portion of a suction gun in another modification.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] The following will describe an embodiment of the present invention with reference to figures.

(Overall Structure of False-Twist Texturing Machine)

[0031] FIG. 1 is a schematic diagram of a false-twist texturing machine 1 of an embodiment of the present invention. The false-twist texturing machine 1 includes a yarn supplying unit 2 configured to supply yarns Y, a processing unit 3 configured to false-twist the yarns Y supplied from the yarn supplying unit 2, and a winding unit 4 configured to wind the yarns Y false-twisted by the processing unit 3 so as to form packages P.

[0032] The yarn supplying unit 2 includes a creel stand 10 retaining yarn supply packages Q, and is configured to supply the yarns Y to the processing unit 3. In the processing unit 3, the following members are provided in this order from the upstream in a yarn running direction in which the yarns Y run: first feed rollers 11; a twist-stopping guide 12; a first heater 13; a cooler 14; a twisting unit 15; second feed rollers 16; an interlacing device 17; third feed rollers 18; a second heater 19; and fourth feed rollers 20. In the winding unit 4, the yarns Y false-twisted by the processing unit 3 are wound by winding devices 21 so as to form the packages P.

[0033] The false-twist texturing machine 1 includes a main base 5 and a winding base 6 which are provided to be spaced apart from each other in a left-right direction of FIG. 1. The main base 5 and the winding base 6 extend in a direction perpendicular to the plane of FIG. 1, and are provided to oppose each other. An upper part of the main base 5 and an upper part of the winding base 6 are connected to each other by a supporting frame 7. The apparatuses constituting the processing unit 3 are mainly attached to the main base 5 and the supporting frame 7. The main base 5 and the winding base 6 and the supporting frame 7 surround a working space 8 where an operator performs yarn threading, etc. The yarns Y mainly run around the working space 8. A working bench 9 is placed on the floor of the working space 8, and the operator performs various operations on the working bench 9.

(Processing Unit)

[0034] The first feed rollers 11 are provided on an upper part of the winding base 6, and configured to supply the yarns Y from the yarn supplying unit 2 to the first heater 13.

[0035] The twist-stopping guide 12 is placed downstream of the first feed rollers 11 in the yarn running direction, and placed upstream of the first heater 13 in the yarn running direction. The twist-stopping guide 12 is configured to prevent twist of the yarns Y from being propagated to the upstream in the yarn running direction of the twist-stopping guide 12. The twist of the yarns Y is formed by the later-described twisting unit 15.

[0036] The first heater 13 is attached to the supporting frame 7, and configured to heat the yarns Y fed from the first feed rollers 11.

[0037]  The cooler 14 is placed downstream of the first heater 13 in the yarn running direction and upstream of the false-twisting unit 15 in the yarn running direction, and configured to cool the yarns Y heated by the first heater 13.

[0038] The twisting unit 15 is provided at the upper part of the main base 5, and configured to twist the yarns Y. Examples of the type of the twisting unit 15 include a belt-type twisting unit, a friction-disc type twisting unit, and a pin-type twisting unit. In the present embodiment, the type of the twisting unit 15 is not limited to these.

[0039] The second feed rollers 16 are provided below the twisting unit 15 in the main base 5, and configured to send the yarns Y twisted by the twisting unit 15 toward the interlacing device 17. The conveyance speed of conveying the yarns Y by the second feed rollers 16 is higher than the conveyance speed of conveying the yarns Y by the first feed rollers 11. The yarns Y are therefore drawn between the first feed rollers 11 and the second feed rollers 16.

[0040] The interlacing device 17 is provided below the second feed rollers 16 in the main base 5, and configured to interlace the yarns Y.

[0041] The third feed rollers 18 are provided below the interlacing device 17 in the main base 5, and configured to send the yarns Y interlaced by the interlacing device 17 toward the second heater 19. The conveyance speed of conveying the yarns Y by the third feed rollers 18 is lower than the conveyance speed of conveying the yarns Y by the second feed rollers 16. The yarns Y are therefore relaxed between the second feed rollers 16 and the third feed rollers 18.

[0042] The second heater 19 is provided below the third feed rollers 18 in the main base 5, and configured to heat the yarns Y fed from the third feed rollers 18.

[0043] The fourth feed rollers 20 are provided at a lower part of the winding base 6, and configured to send the yarns Y thermally treated by the second heater 19 toward the respective winding devices 21. The conveyance speed of conveying the yarns Y by the fourth feed rollers 20 is lower than the conveyance speed of conveying the yarns Y by the third feed rollers 18. The yarns Y are therefore relaxed between the third feed rollers 18 and the fourth feed rollers 20.

[0044]  In the processing unit 3 arranged as described above, the yarns Y drawn between the first feed rollers 11 and the second feed rollers 16 are twisted by the twisting unit 15. The twist formed by the twisting unit 15 propagates to the twist-stopping guide 12, but does not propagate to the upstream of the twist-stopping guide 12 in the yarn running direction. The yarns Y which are twisted and drawn are heated by the first heater 13. After that, the yarns Y are cooled and thermally set by the cooler 14. The yarns Y which are twisted pass the twisting unit 15. After that, the yarns Y are unwound before the yarns Y reach the second feed rollers 16. The twist of each yarn Y, however, is thermally set as described above. Each of the filaments therefore maintains a wavy false-twisted state.

[0045] Furthermore, the yarns Y are interlaced by the interlacing device 17 while being relaxed between the second feed rollers 16 and the third feed rollers 18. The yarns Y which are interlaced are thermally set by the second heater 19 while being relaxed between the third feed rollers 18 and the fourth feed rollers 20. The yarns Y which are fed from the fourth feed rollers 20 are finally wound by the winding devices 21 to form the packages P.

(Yarn Threading to Second Heater)

[0046] The following will describe yarn threading to the second heater 19 (corresponding to a heater of the present invention). The operator causes an unillustrated suction device to suck each yarn Y which is taken out from a corresponding yarn supply package Q. The unillustrated suction device is provided above the second heater 19. In this state, each yarn Y is threaded to apparatuses which are placed upstream of the second heater 19 in the yarn running direction. In so doing, the operator uses a suction gun for holding each yarn Y. Inside the second heater 19, yarn running paths 30 in which the yarns Y run are formed to be aligned in a direction perpendicular to the sheet of FIG. 1 (hereinafter, this direction is referred to as an "arrangement direction"). An upper end portion of each yarn running path 30 is an inlet portion 31, and a lower end portion of each yarn running path 30 is an outlet portion 32. Because the second heater 19 is long in an up-down direction, each yarn running path 30 is a narrow cylindrical space which is long in the up-down direction. Therefore, the suction gun cannot be inserted into each yarn running path 30.

[0047] Instead of inserting the suction gun, the operator causes a sucking unit provided at a leading end of the suction gun to be engaged with the outlet portion 32 so as to generate a suction flow in a corresponding yarn running path 30. In this state, as each yarn Y is taken out from the unillustrated suction device and brought close to the inlet portion 31, each yarn Y is sucked by the suction gun and threaded to a corresponding yarn running path 30.

[0048] In a conventional example, the suction gun is fixed to a holder in the yarn threading to the second heater 19. However, when the suction gun is not properly fixed to the holder, the sucking unit of the suction gun is not engaged with the outlet portion 32 of each yarn running path 30. As a result, each yarn Y in a corresponding yarn running path 30 cannot be properly sucked. It is laborious to finely adjust the position of the suction gun fixed to the holder. Furthermore, the holder is disadvantageously deformed by forcibly moving the suction gun which is not properly fixed. Therefore, the suction gun is not fixed to the holder but is hooked on a hook member 40 in the present embodiment.

[0049] As shown in FIG. 1, the hook member 40 is placed close to the working space 8 side of the second heater 19 and below an upper end of a wall portion 9a of the working bench 9. The wall portion 9a is formed at one edge portion of the working bench 9 on the second heater 19 side of the working bench 9, and extends upward from an upper surface of the working bench 9. FIG. 2 shows the second heater 19 when viewed from the working space 8. As shown in FIG. 2, the hook member 40 is a cylindrical pipe member extending throughout the second heater 19 in the arrangement direction.

[0050] FIG. 3 is a side view showing a state immediately after a suction gun 50 is hooked on the hook member 40. FIG. 4 is a side view showing a state in which a sucking unit 51 of the suction gun 50 is engaged with the outlet portion 32 of one yarn running path 30. The outlet portion 32 of the yarn running path 30 extends downward from a main body of the second heater 19. A lower end of the outlet portion 32 is bent toward the working space 8. As shown in FIG. 2, a guider 34 is fixed to the leading end of the outlet portion 32. The guider 34 will be detailed later. In this regard, the guider 34 is not illustrated in the figures except FIG. 2.

[0051] The suction gun 50 is a long member in which the sucking unit 51, a pipe 52, and a handle grip 53 are formed in this order from a leading end of the suction gun 50. The suction gun 50 is connected to the unillustrated suction device through a flexible hose, and configured to suck air from the sucking unit 51. A leading end portion of the pipe 52 is bent so that, when the suction gun 50 is hooked on the hook member 40, the sucking unit 51 faces the outlet portion 32. To an intermediate part of the pipe 52, a U-shaped hooking portion 54 is attached. The hooking portion 54 is fixed to the pipe 52 by an unillustrated bolt. Because of this, the position of the hooking portion 54 in a longitudinal direction of the suction gun 50 is adjustable by loosening the bolt. The structure allowing the hooking portion 54 to be positionally adjustable may not use the bolt. The position of the hooking portion 54 is not necessarily adjustable. The hooking portion 54 may be fixed to the pipe 52 by welding, etc.

[0052] When threading each yarn Y to a corresponding yarn running path 30, the operator hooks the suction gun 50 on the hook member 40. At this time, the position of the hooked suction gun 50 in the arrangement direction is substantially the same as the position of the yarn running path 30 to which the yarn Y is about to be threaded in the arrangement direction. As shown in FIG. 3, the sucking unit 51 of the suction gun 50 is separated from the outlet portion 32 of the yarn running path 30 immediately after the suction gun 50 is hooked on the hook member 40. In this regard, the weight of a part of the suction gun 50 on the base end side of the hooking portion 54 is larger than the weight of a part of the suction gun 50 on the leading end side of the hooking portion 54. Therefore, the suction gun 50 hooked on the hook member 40 is swung about the hook member 40 clockwise in FIG. 3. As a result, the sucking unit 51 of the suction gun 50 is engaged with the outlet portion 32 as shown in FIG. 4 so as to generate the suction flow inside the yarn running path 30. In this state, as the yarn Y is taken out from the unillustrated suction device and brought close to the inlet portion 31, the yarn Y is sucked by the suction gun 50 and threaded to the yarn running path 30. After that, the yarn Y which is sucked and held by the suction gun 50 is threaded to a corresponding winding device 21 and members along a yarn path.

[0053] The sucking unit 51 of the suction gun 50 is arranged to be smoothly engaged with the outlet portion 32. As shown in FIG. 2, the guider 34 is fixed to the leading end of the outlet portion 32. The guider 34 includes a curved guide surface 34a for guiding the sucking unit 51 to the outlet portion 32 at a time when the suction gun 50 is swung. Because of this, even when the position of the suction gun 50 hooked on the hook member 40 is slightly deviated in the arrangement direction, the sucking unit 51 is guided to the outlet portion 32 by the guide surface 34a at the time when the suction gun 50 is swung. In this regard, the guider 34 may be integrated with the outlet portion 32.

[0054] FIG. 5(a) is a cross section of the sucking unit 51 of the suction gun 50 before the sucking unit 51 is engaged with the outlet portion 32 of one yarn running path 30, and FIG. 5(b) is a cross section of the sucking unit 51 of the suction gun 50 after the sucking unit 51 is engaged with the outlet portion 32 of one yarn running path 30. As shown in FIG. 5, the sucking unit 51 is circular frustum in shape and tapered so that the outer diameter of the sucking unit 51 decreases toward the leading end of the sucking unit 51. Meanwhile, the diameter of an inner passage of the outlet portion 32 increases toward the leading end of the outlet portion 32, and the inclination angle of the inner passage is substantially the same as that of the outer circumferential surface of the sucking unit 51. With this arrangement, the sucking unit 51 is smoothly inserted into the outlet portion 32, and the sucking unit 51 can be engaged with the outlet portion 32 without a gap.

(Advantageous Effects)

[0055] In the present embodiment, as the hooking portion 54 of the suction gun 50 is hooked on the hook member 40, the suction gun 50 is swung by its own weight so that the sucking unit 51 of the suction gun 50 is engaged with the outlet portion 32 of each yarn running path 30. With this arrangement, the suction gun 50 is not required to be firmly fixed. Even if the sucking unit 51 is not properly engaged with the outlet portion 32, the position of the suction gun 50 is easily adjustable because the suction gun 50 is only hooked on the hook member 40. It is therefore possible to easily thread each yarn Y to corresponding one of the yarn running paths 30, which are formed in the second heater 19, by using the suction gun 50.

[0056] In the present embodiment, the yarn running paths 30 are provided to be aligned in the predetermined arrangement direction (the above-described arrangement direction in the present embodiment) in the second heater 19, and the hook member 40 extends in the arrangement direction. With this arrangement, only one hook member 40 is needed for the yarn running paths 30. This reduces the number of components.

[0057] In the present embodiment, the hook member 40 is a cylindrical pipe member extending in the arrangement direction. The hook member 40 is strengthened with low cost by using the pipe member as the hook member 40.

[0058] In the present embodiment, the position of the hooking portion 54 is adjustable in a longitudinal direction of the suction gun 50. With this arrangement, a distance between the hooking portion 54 and the sucking unit 51 is easily adjustable in the suction gun 50. Therefore, the sucking unit 51 can be certainly engaged with the outlet portion 32.

[0059] In the present embodiment, the guider 34 is provided for guiding the sucking unit 51 to the outlet portion 32 at the time when the suction gun 50 is swung. Such a guider 34 allows the sucking unit 51 of the suction gun 50 to be guided to the outlet portion 32. Therefore, the sucking unit 51 can be certainly engaged with the outlet portion 32.

[0060] In the present embodiment, the sucking unit 51 is tapered toward the leading end of the sucking unit 51. Meanwhile, the diameter of the inner passage of the outlet portion 32 increases toward the leading end of the outlet portion 32. Because of this, the sucking unit 51 of the suction gun 50 is further reliably and smoothly engaged with the outlet portion 32.

[0061] In the present embodiment, each yarn running path 30 extends in the up-down direction, and the lower end portion of the yarn running path 30 is the outlet portion 32. In this case, the outlet portion 32 of the yarn running path 30 may be placed close to feet of the operator. This makes yarn threading to the yarn running path 30 difficult. Therefore, the present invention in which (i) fixation of the suction gun 50 is not required and (ii) the suction gun 50 is only hooked on the hook member 40 is particularly effective.

[0062] In the present embodiment, the working bench 9 on which the operator stands at a time of the yarn threading to the yarn running path 30 is provided, the wall portion 9a extending upward from the upper surface of the working bench 9 is provided on the one edge portion of the working bench 9 on the second heater 19 side of the working bench 9, and the hook member 40 is provided below the upper end of the wall portion 9a. When the hook member 40 is provided above the upper end of the wall portion 9a, the operator tends to perform operations at an upper portion of the second heater 19 while using the hook member 40 as a step. As a result, the hook member 40 may be damaged. In this regard, when the hook member 40 is preferably provided below the upper end of the wall portion 9a as described above, the hook member 40 is unlikely to be used as a step.

(Other embodiments)

[0063] The following describes modifications of the present invention.

[0064]  The hook member 40 may include a positioning portion for positioning the suction gun 50. For example, as shown in FIG. 6, a hook member 41 includes positioning portions 41a for positioning the suction gun 50 in the arrangement direction. Each positioning portion 41a is a concave portion which is formed on a surface of the hook member 41 and at the same position as the position of corresponding one of the yarn running paths 30 in the arrangement direction. The hooking portion 54 of the suction gun 50 can be hooked on each positioning portion 41a. By providing the above-described positioning portions 41a, the suction gun 50 is easily positioned in the arrangement direction even when the hook member 41 which is long in the arrangement direction is used. Furthermore, because the positioning portions 41a are concave portions, the suction gun 50 is further reliably positioned. However, the specific arrangement of the positioning portion is not limited to this. For example, the positioning portion may be a mark made on a predetermined position of the hook member.

[0065] In the embodiment above, the hook member 40 is a cylindrical pipe member. However, the specific arrangement of the hook member 40 is not limited to this. For example, as shown in FIG. 7, a hook member 42 which is J-shaped in cross section orthogonal to the arrangement direction may be used. Furthermore, the shape of the hook member may be suitably arranged as long as the hooked suction gun 50 can be swung by its own weight.

[0066] In the embodiment above, the hook member 40 is a single member extending in the arrangement direction. However, as shown in FIG. 8, hook members 43 may be provided to be aligned in the arrangement direction to correspond to the respective yarn running paths 30. The hook members 43 are attached to a supporting member 44 fixed to the second heater 19. Each hook member 43 provided to correspond to one of the yarn running paths 30 can function as a positioning member. FIG. 8 illustrates the hook members 43 each of which is J-shaped in cross section orthogonal to the arrangement direction. However, the shape of each hook member 43 is not limited to this.

[0067] In the embodiment above, the hooking portion 54 of the suction gun 50 is U-shaped. However, the shape of the hooking portion 54 may be suitably arranged as long as the suction gun 50 which is hooked on the hook member can be swung by its own weight. For example, as shown in FIG. 9, a hooking portion 56 of the suction gun 50 includes a cylindrical portion 56a and a fixing portion 56b which fixes the cylindrical portion 56a to the pipe 52. In this case, the suction gun 50 is hooked on the hook member 45 by placing the cylindrical portion 56a on the hook member 45 which is J-shaped in cross section orthogonal to the arrangement direction. In this regard, the hook member 45 may be provided as shown in FIG. 7, or plural hook members 45 may be provided as shown in FIG. 8.

[0068] In the embodiment above, the wall portion 9a is formed on the working bench 9. However, the wall portion 9a of the working bench 9 may be omitted. In this case, the hook member 40 is preferably provided below the upper surface of the working bench 9 so that the operator cannot use the hook member 40 as a step.

[0069] In the embodiment above, the present invention is applied to the second heater 19 extending in the up-down direction. However, the present invention may be applied to a heater extending in a direction different from the up-down direction.

Claims

1. A false-twist texturing machine (1) configured to false-twist a yarn (Y), the false-twist texturing machine (1) comprising:

a heater (13, 19) in which at least one yarn running path (30) is formed, the yarn (Y) running in the at least one yarn running path (30);

a suction gun (50) used for threading the yarn (Y) to the at least one yarn running path (30); and

at least one hook member (40, 41, 42, 43, 45) on which the suction gun (50) is hooked to be swingable, and

when a hooking portion (54, 56) provided in the suction gun (50) is hooked on the at least one hook member (40, 41, 42, 43, 45), the suction gun (50) being swung about the at least one hook member (40, 41, 42, 43, 45) by the weight of the suction gun (50) so that a sucking unit (51) provided at a leading end of the suction gun (50) is engaged with an outlet portion (32) of the at least one yarn running path (30).

2. The false-twist texturing machine (1) according to claim 1, wherein, yarn running paths (30) are formed in the heater (13, 19) to be aligned in a predetermined arrangement direction, and
the at least one hook member (40, 41, 42, 45) extends in the arrangement direction.

3. The false-twist texturing machine (1) according to claim 2, wherein, the at least one hook member (40, 41) is a cylindrical pipe member extending in the arrangement direction.

4. The false-twist texturing machine (1) according to claim 2 or 3, wherein, the at least one hook member (41) includes positioning portions (41a) for positioning the suction gun (50), the positioning portions (41a) being provided to correspond to the respective yarn running paths (30) .

5. The false-twist texturing machine (1) according to claim 4, wherein, the positioning portions (41a) are concave portions formed on a surface of the at least one hook member (41), and the hooking portion (54) is able to be hooked on any of the concave portions.

6. The false-twist texturing machine (1) according to claim 1, further comprising one or more hook member (43), wherein, yarn running paths (30) are formed in the heater (13, 19) to be aligned in a predetermined arrangement direction, and
the hook members (43) are provided to correspond to the respective yarn running paths (30) and to be aligned in the arrangement direction.

7. The false-twist texturing machine (1) according to any one of claims 1 to 6, wherein, a position of the hooking portion (54) is adjustable in a longitudinal direction of the suction gun (50).

8. The false-twist texturing machine (1) according to any one of claims 1 to 7, wherein, a guider (34) is provided for guiding the sucking unit (51) to the outlet portion (32) when the suction gun (50) is swung.

9. The false-twist texturing machine (1) according to any one of claims 1 to 8, wherein, the sucking unit (51) is tapered toward a leading end of the sucking unit (51), and
a diameter of an inner passage of the outlet portion (32) increases toward a leading end of the outlet portion (32) .

10. The false-twist texturing machine (1) according to any one of claims 1 to 9, wherein, each of the yarn running paths (30) extends in an up-down direction, and a lower end portion of each of the yarn running paths (30) is the outlet portion (32).

11. The false-twist texturing machine (1) according to claim 10, wherein, a working bench (9) on which an operator stands at a time when the yarn (Y) is threaded to each of the yarn running paths (30) is provided, and
the at least one hook member (40) is provided below an upper surface of the working bench (9).

12. The false-twist texturing machine (1) according to claim 10, wherein, a working bench (9) on which an operator stands at a time when the yarn (Y) is threaded to each of the yarn running paths (30) is provided,

a wall portion (9a) is provided at one edge portion of the working bench (9) to extend upward from an upper surface of the working bench (9), the one edge portion being on the heater (19) side, and

the at least one hook member (40) is provided below an upper end of the wall portion (9a).

Drawing