(19)
(11)EP 1 388 600 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
11.11.2009 Bulletin 2009/46

(21)Application number: 02718529.7

(22)Date of filing:  11.04.2002
(51)Int. Cl.: 
D04B 15/82  (2006.01)
(86)International application number:
PCT/JP2002/003605
(87)International publication number:
WO 2002/086216 (31.10.2002 Gazette  2002/44)

(54)

NEEDLE SELECTOR FOR KNITTING MACHINE, AND NEEDLE SELECTING MODULE FINGER

NADELSELEKTOR FÜR STRICK- ODER KULIERWIRKMASCHINE SOWIE NADELSELEKTIERENDE FINGEREINHEIT

DETECTEUR D'AIGUILLE POUR MACHINE A TRICOTER, ET DOIGT DE MODULE DE SELECTION D'AIGUILLE


(84)Designated Contracting States:
DE ES FR IT TR

(30)Priority: 16.04.2001 JP 2001117394

(43)Date of publication of application:
11.02.2004 Bulletin 2004/07

(73)Proprietors:
  • Wac Data Service Kabushiki Kaisha
    Fujimi-shi, Saitama-ken 354-0018 (JP)
  • B & PLUS K.K.
    Tokigawa-machi Hiki-gun, Saitama-ken (JP)

(72)Inventors:
  • WATANABE, Kazuhisa, c/o WAC DATA SERVICE KK
    Fujimi-shi, Saitama 354-0018 (JP)
  • IIDA, Nobuo
    Osato-gun, Saitama 360-0105 (JP)

(74)Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)


(56)References cited: : 
JP-A- 8 109 554
JP-Y2- 2 013 509
JP-A- 2000 073 262
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] The present invention relates to a needle selector for a knitting machine and, more particularly, to a needle selection finger formed by combining a plurality of members, and a needle selector for a knitting machine which uses it, as well as a method of manufacturing a needle selection module finger.

    BACKGROUND ART



    [0002] In a knitting machine such as a circular knitting machine or weft knitting machine, vertical motions of the working needle are selected on the basis of a knitting procedure stored in a storage such as a floppy disk, to knit a fabric of a desired knit texture. Various types of needle selectors are used for selecting the vertical motions of the working needle.

    [0003] Before describing the needle selector according to the present invention, the outline of needle selection in a knitting machine will be explained with reference to a circular knitting machine schematically illustrated in Figs. 4A to 4C.

    [0004] Fig. 4A is a schematic perspective view for explaining the basic knitting mechanism of a circular knitting machine. As illustrated in Fig. 4A, the circular knitting machine has a knitting cylinder 1 rotatable in the direction indicated by an arrow A. A plurality of vertical grooves (not shown) are formed in the outer surface of the knitting cylinder 1 along its longitudinal axis. Working needles 2 are arranged slidably in the vertical grooves. Usually, needle selection jacks 12 are arranged under the working needles 2 to be able to abut against the lower parts of the working needles 2. A cylinder-shaped cam base 15a is stationarily arranged under the knitting cylinder 1. A plurality of raising cams 15 with predetermined shapes are arranged on the upper part of the cam base 15a at predetermined intervals.

    [0005] The basic principle of knitting will be briefly described. When each working needle 2 on the rotating knitting cylinder 1 is thrust upward by the corresponding raising cam 15 through the needle selection jack 12, it projects from the upper surface of the knitting cylinder 1. A yarn 5 fed from a yarn bobbin 6 is supplied to the hook of the projecting working needle 2, thus forming a yarn loop. Then, the working needle 2 is lowered by a known mechanism (not shown), so one stitch is formed. Therefore, control operation of forming a stitch by selecting whether vertical motion is to be applied to the working needle 2, or allowing advance to the next knitting step without forming a stitch can be performed. As a result, a desired fabric can be knitted. In order to provide such motions to the working needles, in the knitting machine, the needle selection jacks 12 are usually arranged in contact with the lower parts of the working needles 2. The vertical motions of the working needles are controlled, by selectively engaging the needle selection jacks 12 and raising cams 15, by using a needle selector 3, operating on the basis of information from a controller 4 with a built-in storage that stores a knitting procedure.

    [0006] Next, a case wherein piezoelectric bodies are used as needle selection means will be described with reference to Figs. 4B and 4C which show the relationship among the working needles 2, needle selection jacks 12, and needle selector 3. Figs. 4B and 4C are schematic views that facilitate understanding of the operation of the needle selection means with ease.

    [0007] A piezoelectric body 7 can be either curved as shown in Fig. 4B, or curved as shown in Fig. 4C, in the direction opposite to that shown in Fig. 4B, depending on how a voltage is applied to it. A finger 9 is arranged at the tip of the piezoelectric body 7 to be linked to it. In Figs. 4B and 4C, the piezoelectric body 7, finger 9, and raising cam 15 are positioned within the surface of the drawing, and the working needle 2 and needle selection jack 12 move circularly together with the knitting cylinder 1 (not shown) from the top to the bottom of the surface of the drawing (or in the reverse direction). The needle selection jack 12 can swing about a fulcrum 12a as the center. A needle selection butt 13 (upper part) and raising cam butt 14 (lower part) project sideways from the needle selection jack 12 as shown in Figs. 4B and 4C.

    [0008] When the piezoelectric body 7 is curved as shown in Fig. 4B, the needle selection butt 13 of the needle selection jack 12 which moves circularly hits the finger 9. As a result, the needle selection jack 12 is thrust clockwise about the fulcrum 12a as the center, and the raising cam butt 14 of the needle selection jack 12 cannot engage with the raising cam 15. Therefore, the needle selection jack 12 is not thrust upward by the raising cam 15, and accordingly the working needle 2 is not thrust upward.

    [0009] When the piezoelectric body 7 is curved as shown in Fig. 4C, the finger 9 at its tip does not hit the needle selection butt 13 of the needle selection jack 12 which moves circularly together with the knitting cylinder 1. Hence, the needle selection jack 12 remains in the vertical direction, and accordingly the raising cam butt 14 at the lower end of the needle selection jack 12 engages with the raising cam 15. Therefore, the needle selection jack 12 is thrust upward along the inclined surface of the raising cam 15, and accordingly the working needle 2 is also thrust upward.

    [0010] A member indicated by reference numeral 25 in Figs. 4B and 4C is a finger pivot stopper formed by part of the frame of the needle selector. When the position of the member 25 is appropriately determined, the finger 9 engages with the needle selection butt 13 reliably, so the finger 9 is prevented from drifting over contact with the needle selection butt 13.

    [0011] In this manner, selective engagement of the needle selection butt 13 of the needle selection jack 12 with the finger 9 at the tip of the piezoelectric body 7 enables the working needle 2 to move upward freely as desired and thereby enables a knit fabric of any desired knit texture to be knit.

    [0012] Fig. 5 shows the relationship between the piezoelectric body 7 and finger 9 of this piezoelectric needle selector 3.

    [0013] As shown in Fig. 5, the finger 9 is arranged to be movable relative to the piezoelectric body 7 having a bimorph piezoelectric element. Power is applied to the piezoelectric body 7 to actuate the finger 9. This motion of the finger 9 causes the working needles of the knitting machine to be selected (more specifically, via the needle selection jack 12), and knitting of a fabric with a predetermined knit texture is made possible. The rear end of the piezoelectric body 7 is movably supported via a spherical body, i.e., a rotary body 20, by a support 21 or a concave part 22 of a housing. The tip of the piezoelectric body 7 is movably linked via a rotary body 16 into a U-shaped groove 17 (to be referred to as a slit 17 hereinafter) at the rear end of the finger 9. The piezoelectric body 7 is arranged with its predetermined position between the rear end and the tip of the piezoelectric body 7 being pinched by a rotary body 23 rotatably fitted to a support 24 or the housing.

    [0014] As shown in Fig. 5 and known from JP-2000-73262 A, the finger 9 is supported at its intermediate portion 9b by a support 10b through a pin 18. Hence, when the piezoelectric body 7 flexes, its motion vertically moves a rear end (piezoelectric body engaging portion) 9a of the finger 9. As a result, the finger 9 swings about the pin 18, serving as the pivot support point of the finger 9, as the center, so a bar-shaped portion 9C of the finger 9 projecting through an opening 11 of a support 10a swings, and consequently a tip 9d moves vertically. The vertical motion of the tip 9d causes the rising motion of the working needle 2 described above to be selected.

    [0015] Fig. 6A is a side view of a conventionally known finger 9, and Fig. 6B is a front view of the same. As shown in Figs. 6A and 6B, the finger 9 is comprised of a bar-shaped thin elongated member 9c extending from a butt abutting surface 9d at its tip to reach a central portion 9b having a pivot support point 18a, and a piezoelectric body engaging portion 9a extending from the central portion 9b in the other direction. The pivot support point 18a is on a longitudinal axis 9X1 of the bar-like thin elongated member. The piezoelectric body engaging portion 9a has a slit 17 to accommodate a curved motion end 16 of the piezoelectric body.

    [0016] As shown in Figs. 6A and 6B, the conventionally known finger 9 is formed of a material, integral from its butt abutting surface 9d on the knitting cylinder-side tip to the piezoelectric body engaging portion 9a of the needle selector.

    [0017] The shape, size, and the like of the finger 9, however, change depending on the type of the knitting machine, the type of the needle selector, and the knit texture of the fabric to be knitted by this knitting machine. The manufacturer of the needle selector for the knitting machine copes with this situation by preparing very many types of fingers in stock.

    [0018] In view of this, it has been discussed to form a predetermined finger in the following manner. The operatively downstream portions (to be referred to as finger members in the following description) of fingers which have butt abutting surfaces engageable with the needle selection jacks of the knitting cylinder and the operatively upstream portions (to be referred to as finger holding members in the following description) of the fingers which have the piezoelectric body engaging portions for the needle selector are fabricated by separate manufacturing steps, and are kept in stock. A finger holding member and finger member are appropriately selected and combined in accordance with the type of the knitting machine in which the finger is to be used, and with the knit texture of the target fabric, thus forming the predetermined finger. This can greatly reduce the number of the types of fingers to be kept in stock.

    [0019] A finger (to be referred to as a module finger hereinafter) which is formed by combining a finger holding member and finger member to match the object is recently known. An example of the module finger will be described hereinafter with reference to Figs. 7A and 7B showing perspective views.

    [0020] A module finger 30a shown in Fig. 7A is comprised of a finger member 31a and finger holding member 40a. The finger member 31a is comprised of a butt abutting portion 33a having a butt abutting surface 32a at its tip, and a support 34a extending like a bar from the butt abutting portion 33a. The finger holding member 40a has a metal plate slit 44a at its lower part to form a piezoelectric body engaging portion 45a. A connecting plate 46 is connected to the upper side of the slit 44a.

    [0021] The finger member 31a and finger holding member 40a of the module finger 30a shown in Fig. 7A are connected using a synthetic resin after the lower part of the support 34a of the finger member 31a and the connecting plate 46 above the finger holding member 40a are manually arranged to oppose each other. Namely, a connecting portion 51 is formed from the synthetic resin.

    [0022] The module finger 30a obtained with this method cannot be used for high-speed rotation, since the positional relationship between the butt abutting surface 32a and piezoelectric body engaging portion 45a is low. Furthermore, the complicated manual operation using the synthetic resin increases the cost.

    [0023] A module finger 30b shown in Fig. 7B is comprised of a metal finger member 31b substantially identical with the finger member 31a shown in Fig. 7A, and a synthetic resin finger holding member 40b. The module finger shown in Fig. 7B is manufactured in the following manner. More specifically, first, the finger member 31b is manufactured with high precision by using a metal material, and is kept in stock. When fabricating a specific module finger 30b, a finger member 31b with a structure suitable for the knit texture of the fabric is selected. A mold corresponding to the structure of the target finger holding member 40b is loaded in an injection molder, and the finger member 31b is arranged at a predetermined position in the mold of the injection molder. Then, a synthetic resin is injected.

    [0024] The module finger 30b shown in Fig. 7B, which is obtained in accordance with the above method known from JP-8-109 554 A, has excellent size precision. Regarding the manufacture of the module finger 30b, the expensive injection molder must be operated by a skilled operator. This increases the cost of the obtained module finger.

    [0025] Although a demand for a module finger with which the stock of the fingers can be decreased and which can be manufactured to meet the situation has arisen, such a module finger is substantially difficult to become popular.

    [0026] It is an object of the present invention to solve the problems of the conventionally known module finger and to provide a new module finger with which fingers that need to have various types of shapes can be supplied quickly as required at a low cost.

    DISCLOSURE OF INVENTION



    [0027] In order to achieve the above object, a needle selector for a knitting machine according to the present invention has the arrangement according to claim 1.

    [0028] A needle selection module finger according to the present invention for achieving the above object has the arrangement according to claim 3.

    [0029] Furthermore, a method of manufacturing a needle selection module finger according to the present invention for achieving the above object comprises the steps of the method according to claim 7.

    [0030] The needle selection module finger having the above arrangements according to the present invention can be used in various types of needle selectors for a knitting machine.

    BRIEF DESCRIPTION OF DRAWINGS



    [0031] 

    Fig. 1 is a perspective view showing an example of a module finger used in a needle selector for a knitting machine according to an embodiment of the present invention;

    Fig. 2A is a front view showing an example of a finger member 31 for the module finger shown in Fig. 1;

    Fig. 2B is a side view of the finger member 31 for the module finger shown in Fig. 2A;

    Fig. 3A is a front view showing an example of a finger holding member 40 for the module finger shown in Fig. 1;

    Fig. 3B is a side view of the finger holding member 40 shown in Fig. 3A;

    Fig. 3C is a plan view of the finger holding member 40 shown in Fig. 3A;

    Fig. 4A is a schematic perspective view of an entire knitting machine to explain the knitting function of the knitting machine;

    Fig. 4B is a view for explaining the knitting function of the knitting machine in a state wherein the finger of the needle selector engages with the needle selection pad of the needle selection jack.

    Fig. 4C is a view for explaining the knitting function of the knitting machine in a state wherein the finger of the needle selector does not engage with the needle selection pad of the needle selection jack;

    Fig. 5 is a side sectional view showing the operational relationship between the piezoelectric body and the finger in the needle selector for the knitting machine;

    Fig. 6A is a side view showing an example of a conventionally known finger;

    Fig. 6B is a front view of the finger of Fig. 6A;

    Fig. 7A is a view showing a conventional module finger formed by combining two members, i.e., a finger member and a finger holding member in a case wherein the two members are connected to each other with a resin; and

    Fig. 7B is a view showing a conventional module finger formed by combining two members, i.e., a finger member and a finger holding member in a case wherein a module finger is obtained by burying a metal finger member in a resin finger holding member by using an injection molder.


    BEST MODE FOR CARRYING OUT THE INVENTION



    [0032] The present invention will be described in detail with reference to accompanying drawings showing an embodiment of the present invention.

    [0033] Fig. 1 shows in a perspective view showing an example of a module finger used in a needle selector for a knitting machine according to this embodiment. As shown in Fig. 1, a module finger 30 of this embodiment is comprised of a finger member 31 and finger holding member 40.

    [0034] Figs. 2A and 2B are views showing an example of the finger member 31, in which Fig. 2A is a front view, and Fig. 2B is a side view. Figs. 3A to 3C are views showing an example of the finger holding member 40, in which Fig. 3A is a front view, Fig. 3B is a side view of the finger member of Fig. 3A, and Fig. 3C is a plan view.

    [0035] As shown in Fig. 1 and Figs. 2A and 2B, the finger member 31 is comprised of a butt abutting portion 33 having a butt abutting surface 32 at its tip, and a support 34 projecting like a bar from the butt abutting portion 33. The support 34 has at its lower part a projection 35 extending to the right and an inserting projection 36 extending to the left in the example of Fig. 2A. The projection 35 has a hole 37 corresponding to a hole 37a of the finger holding member 40. The finger member 31 is formed of a flat plate with a uniform thickness, as shown in the side view of Fig. 2B.

    [0036] As shown in Fig. 1 and Figs. 3A to 3C, the finger holding member 40 is formed of a plastic main body 41 fabricated with an injection molding. A connecting portion 41 to be connected to the finger member 31 is formed at the upper part (the finger member 31 side) of the finger holding member 40. A piezoelectric body engaging portion 45 to engage with a piezoelectric body 7 is formed at the lower part of the finger holding member 40 on the opposite side to the connecting portion 41. The connecting portion 41 has a concave part 42 to accommodate part of the support 34 of the finger member 31 described above. An insertion type concave part 42a where the inserting projection 36 of the finger member 31 is to be inserted is formed on the left side of the concave part 42. The projection 35 of the finger member 31 is to be accommodated in the upper right portion of the concave part 42. When the inserting projection 36 of the finger member 31 is fitted in the insertion type concave part 42a of the finger holding member 40, the two members 31 and 40 are positioned relative to each other. With the two members 31 and 40 being combined in this manner, the finger holding member 40 has the hole 37a at a position corresponding to the hole 37 of the finger member.

    [0037] The finger member 31 and finger holding member 40 having the structures described above are assembled together by inserting the finger member 31 toward the insertion type concave part 42a of the finger holding member 40 in a direction indicated by an arrow C in Figs. 1 and 3C. At this time, when the inserting projection 36 of the finger member 31 is inserted in the insertion type concave part 42a of the finger holding member 40, the two members are positioned.

    [0038] In this manner, when the two members 31 and 40 are combined, the hole 37 of the finger member 31 and the hole 37a of the finger holding member 40 are aligned on one straight line. When a pin-shaped member 50 is inserted through the holes 37 and 37a, the two members 31 and 40 are connected integrally. The pin-shaped member also helps in positioning the two members 31 and 40.

    [0039] As shown in Figs. 1 and 3B, a pivot support 43 is formed between the connecting portion 41 and piezoelectric body engaging portion 45. The pivot support 43 is a fulcrum portion where a pin 18 (see Fig. 5) is inserted so the module finger 30 swings. The piezoelectric body engaging portion 45 has a slit 44 as shown in Fig. 3C. The slit 44 is a space where a tip 16 of the piezoelectric body 7 on the module finger 30 side slides along with the swing motion of the piezoelectric body 7. The piezoelectric body engaging portion 45 is a portion which engages with the tip 16 of the piezoelectric body 7. These portions are conventionally known structures in the arrangement of the finger, as described in Fig. 5, and a detailed description thereof will accordingly be omitted.

    [0040] The module finger shown in Fig. 1, Figs. 2A and 2B, and Figs. 3A to 3C is merely an example of the module finger of the present invention, and can be modified in various manners. For example, in the module finger 30 shown in Fig. 1, the finger member 31 and finger holding member 40 may be integrally combined to each other without using the pin-shaped member 50 but with an adhesive or by ultrasonic welding. In this case, the two members are positioned by inserting the inserting projection 36 of the finger actuating member 31 into the insertion type concave part 42a of the finger holding member 40.

    [0041] As described above, the concave part 42 and insertion type concave part 42a for accommodating at least some lower part (35, 36) of the support 34 of the module finger 30 are formed in one end of the finger holding member 40. The respective members have the holes 37 and 37a so as to form a hole extending through the support 34 and connecting portion 41 when the support is inserted and positioned in these concave parts. As shown in Fig. 1, with the finger member 31 and finger holding member 40 being positioned, the pin-shaped member 50 is inserted in the through hole formed by the holes 37 and 37a, so that the finger member 31 and finger holding member 40 are integrally connected to each other. With this arrangement, the positional relationship between the butt abutting portion 33 of the finger member 31 and the piezoelectric body engaging portion 45 of the finger holding member 40 (or the positional relationship between the butt abutting portion 33 and the pivot support 43 of the finger holding member 40) is determined by inserting the supports (35, 36) of the module finger 30 in the concave part 42 and insertion type concave part 42a of the finger holding member 40. Furthermore, when the pin-shaped member 50 is arranged in the holes (37a, 37) extending through the connecting portion 41 of the finger holding member 40 and the projection 35 of the finger member 31, the finger member 31 and finger holding member 40 can be positioned more reliably, and the finger member 31 and finger holding member 40 are integrally connected to each other.

    [0042] Positioning of the finger holding member 40 and finger member 31 by means of the concave parts (42, 42a) and the supports (35, 36) is not limited to the above embodiment, but can be modified in various manners. In fine, this positioning is achieved by forming at least one portion where part of the finger member and part of the finger holding member are combined to each other face to face, such that the positional relationship between the butt abutting surface of the finger member and the piezoelectric body engaging portion (or pivot support) of the finger holding member relative to each other is defined accurately.

    [0043] In the manufacture of the above finger module, a plurality of finger members 31 are manufactured and kept in stock for the respective types so as to cope with the knit textures of various types of fabrics. A plurality of types of finger holding members 40 are manufactured and kept in stock in accordance with the specification of the needle selector where the finger module is to be built. Finger members are selected in accordance with the target knit texture, and finger holding members are selected in accordance with the needle selector where they are to be built. The selected finger members and finger holding members are assembled, combined, and integrated as described with reference to Fig. 1, Figs. 2A and 2B, and Figs. 3A to 3C. As a result, various types of finger modules can be provided.

    [0044] As the knitting cylinder rotates, the butt abutting surfaces at the tips of the finger members come into intermittent contact with the butts of a large number of needle selection jacks at a high speed. Accordingly, the finger members are preferably made of a metal having high impact resistance and high wear resistance.

    [0045] The finger holding member engages with one end of the piezoelectric body by its piezoelectric body engaging portion, and receives the swing motion of the piezoelectric body. At this time, since the finger holding member and piezoelectric body engage with each other in continuous contact, the finger holding member requires high shape precision, but does not require high impact resistance or high wear resistance unlike the finger member. Accordingly, a relatively inexpensive resin material, e.g., a plastic material, having high workability is preferably used to form the finger holding member.

    [0046] As described above, the module finger according to the present invention is formed by fabricating a finger member and finger holding member, which have different performances required in the manufacture and operation, using separate materials, and by combining them. Consequently, various many types of fingers can be formed by combination of a comparatively small number of types of finger members and finger holding members. Since a simple and reliable integral connecting method is employed, a new demand for a high quality finger can be coped with quickly at a relatively low cost.


    Claims

    1. A needle selector (3) for a knitting machine, wherein a plurality of needle selection jacks (12) of the knitting machine each comprise at least one butt (13,14) projecting therefrom and are swingably fitted in a plurality of vertical grooves in an outer surface of a knitting cylinder (1) such that working needles (2) in contact with said jacks (12) move vertically, said needle selector (3) comprising:

    a module finger (30) for selectively engaging with the needle selection jacks (12) of the knitting machine so as to swing the needle selection jacks (12) and

    a driving member (7) for pivoting said module finger (30) based on a predetermined knitting procedure,

    wherein said module finger (30) comprises:

    a finger member (31) having a butt abutting portion (33) with a butt abutting surface (32) at a tip thereof, and a support (34) extending from the butt abutting portion (33); and

    a finger holding member (40) including: (i) a connecting portion (41) at a first end thereof, said connecting portion (41) having a concave part (42) where part of the support of said finger member (31) is mounted to enable positioning of the finger member (31); (ii) an engaging portion (45) at a second end thereof which is engageable with the driving member (7) of the needle selector (3) for the knitting machine; and (iii) a pivot support (43) arranged between the first and second ends to provide a pivot support point for said module finger (30),

    characterised in that an inserting projection (36) is formed at a portion of the support (34) of said finger member (31),
    wherein an insertion type concave part (42a) having an inner surface to support the inserting projection (36) of said finger member (31) is formed at a portion of the concave part (42) of said finger holding member (40), and
    wherein said finger member (31) and said finger holding member (40) are positioned and combined by inserting the inserting projection (36) into the insertion type concave part (42a).
     
    2. The needle selector for the knitting machine according to claim 1, characterized in that the driving member comprises a piezoelectric body (7).
     
    3. A needle selection module finger (30) for a needle selector (3) for a knitting machine, comprising:

    a finger member (31) having a butt abutting portion (33) with a butt abutting surface (32) at a tip thereof, and a support (34) extending from the butt abutting portion (33); and

    a finger holding member (40) including: (i) a connecting portion (41) at a first end thereof, said connecting portion (41) having a concave part (42) where part of the support (34) of said finger member (31) is mounted to enable positioning of the finger member (31); (ii) an engaging portion (45) at a second end thereof which is engageable with a driving member (7) of the needle selector (3) for the knitting machine; and (iii) a pivot support (43) arranged between the first and second ends to provide a pivot support point for said module finger (30),

    characterised in that an inserting projection (36) is formed at a portion of the support (34) of said finger member (31),
    wherein an insertion type concave part (42a) having an inner surface to support the inserting projection (36) of said finger member (31) is formed at a portion of the concave part (42) of said finger holding member (40), and
    wherein said finger member (31) and said finger holding member (40) are positioned and combined by inserting the inserting projection (36) into the insertion type concave part (42a).
     
    4. The needle selection module finger (30) according to claim 3, characterized in that a hole (37,37a) extends through the concave part (42) of said finger holding member (40) and the support of said finger member (31) mounted in the concave part (42), and a pin-shaped member (50) is arranged in the hole (37,37a).
     
    5. The needle selection module finger (30) according to claim 3, characterized in that said finger member (31) comprises a metal.
     
    6. The needle selection module finger (30) according to claim 3, characterized in that said finger member (31) comprises a resin.
     
    7. A method of manufacturing a needle selection module finger (30), comprising the steps of:

    manufacturing a finger member (31) having: (i) a butt abutting portion (33) with a butt abutting surface (32) at a tip thereof, and (ii) a support (34) that extends from the butt abutting portion (33) characterised by an inserting projection (36),

    manufacturing a finger holding member (40) having: (i) a connecting portion (41) at a first end thereof where an insertion type concave part (42a) having an inner surface to support the inserting projection (36) is formed, and (ii) an engaging portion (45) at a second end thereof which is engageable with a driving member (7) of a needle selector (3) for a knitting machine, and

    positioning and combining the finger member (31) and the finger holding member (40) by inserting the inserting projection (36) of the support (34) of the finger member (31) in the insertion type concave part (42a) of the connecting portion (41) of the finger holding member (40).


     
    8. The method of manufacturing the needle selection module finger (30) according to claim 7, characterized in that:

    finger members (31) made of a plurality of types of metals are manufactured and stored to correspond to a plurality of types of knit patterns, and

    one of said finger members (31) is selected in accordance with a knit pattern for combination with the finger holding member (40).


     
    9. The method of manufacturing the needle selection module finger (30) according to claim 7, characterized in that
    a plurality of types of finger holding members (40) are manufactured and stored in accordance with types of needle selectors (3) with plastic injection molds, and
    one of said finger holding members (40) is selected in accordance with a type of a knitting machine.
     


    Ansprüche

    1. Nadelauswahlvorrichtung (3) für eine Strickmaschine, bei der eine Vielzahl an Nadelauswahlaushebern (12) der Strickmaschine jeweils einen sich von diesen Herbern erstreckenden Stumpf (13, 14) aufweisen und so verschwenkbar in einer Vielzahl Nuten in einer äußeren Oberfläche eines Strickzylinders (1) eingesetzt sind, dass sich Arbeitsnadeln (2), die in Kontakt mit den Auswahlvorrichtungen (12) stehen, vertikal bewegen, wobei die Nadelauswahlvorrichtung (3) umfasst:

    einen Modulfinger (30) zum selektiven in Eingriff bringen mit den Nadelauswahlaushebern (12) der Strickmaschine, um die Nadelauswahlausheber (12) zu verschwenken, und

    ein Antriebselement (7) zum Drehen des Modulfingers (30) basierend auf einem vorgegebenen Strickvorgang,

    wobei der Modulfinger (30) umfasst:

    ein Fingerelement (31) mit einem an dem Stumpf angrenzenden Abschnitt (33) mit einer an den Stumpf angrenzenden Oberfläche (32) an einer Spitze davon, und einer Halterung (34), die sich von der an den Stumpf angrenzenden Oberfläche (33) erstreckt, und

    eine Fingerhalteeinrichtung (40) umfassend:

    (i) einen Verbindungsabschnitt (41) an einem ersten Ende davon, wobei der Verbindungsabschnitt (41) einen konkaven Abschnitt (42) aufweist, wobei ein Teil der Halterung des Fingerelementes (31) angeordnet ist, um eine Positionierung des Fingerelementes (31) zu ermöglichen,

    (ii) einen Eingriffsabschnitt (45) an einem zweiten Ende der Fingerhalteeinrichtung (40), welcher mit dem Antriebselement (7) der Nadelauswahlvorrichtung (3) für die Strickmaschine in Eingriff bringbar ist, und

    (iii) ein Drehauflager (43), das zwischen dem ersten und dem zweiten Ende angeordnet ist, um einen Drehauflagerpunkt für den Modulfinger (30) zur Verfügung zu stellen,

    dadurch gekennzeichnet, dass ein Einführungsvorsprung (36) an einem Abschnitt der Halterung (34) des Fingerelements (31) ausgebildet ist,
    wobei ein konkaver Einführungsabschnitt (42a) mit einer innere Oberfläche, um den Einführungsvorsprung (36) des Fingerelements (31) zu stützen, an einem Abschnitt des konkaven Abschnitts (42) der Fingerhalteeinrichtung (40) ausgebildet ist, und
    wobei das Fingerelement (31) und die Fingerhalteeinrichtung (40) durch Einführen des Einführungsvorsprungs (36) in den konkaven Einführungsabschnitt (42a) angeordnet und vereinigt werden.
     
    2. Nadelauswahlvorrichtung für die Strickmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Antriebselement einen piezoelektrischen Körper (7) aufweist.
     
    3. Nadelauswahlvorrichtungsmodulfinger für eine Nadelauswahlvorrichtung (3) für eine Strickmaschine umfassend:

    ein Fingerelement (31) mit einem an dem Stumpf angrenzenden Abschnitt (33) mit einer an den Stumpf angrenzenden Oberfläche (32) an einer Spitze davon, und einer Halterung (34), die sich von der an den Stumpf angrenzenden Oberfläche (33) erstreckt, und

    eine Fingerhalteeinrichtung (40) umfassend:

    (i) einen Verbindungsabschnitt (41) an einem ersten Ende davon, wobei der Verbindungsabschnitt (41) einen konkaven Abschnitt (42) aufweist, wobei ein Teil der Halterung des Fingerelementes (31) angeordnet ist, um eine Positionierung des Fingerelementes (31) zu ermöglichen,

    (ii) einen Eingriffsabschnitt (45) an einem zweiten Ende der Fingerhalteeinrichtung (40), welcher mit einem Antriebselement (7) der Nadelauswahlvorrichtung (3) für die Strickmaschine in Eingriff bringbar ist, und

    (iii) ein Drehauflager (43), das zwischen dem ersten und dem zweiten Ende angeordnet ist, um einen Drehauflagerpunkt für den Modulfinger (30) zur Verfügung zu stellen,

    dadurch gekennzeichnet, dass ein Einführungsvorsprung (36) an einem Abschnitt der Halterung (34) des Fingerelements (31) ausgebildet ist,
    wobei ein konkaver Einführungsabschnitt (42a) mit einer innere Oberfläche, um den Einführungsvorsprung (36) des Fingerelements (31) zu stützen, an einem Abschnitt des konkaven Abschnitts (42) der Fingerhalteeinrichtung (40) ausgebildet ist, und
    wobei das Fingerelement (31) und die Fingerhalteeinrichtung (40) durch Einführen des Einführungsvorsprungs (36) in den konkaven Einführungsabschnitt (42a) angeordnet und vereinigt werden.
     
    4. Nadelauswahlvorrichtungsmodulfinger nach Anspruch 3, dadurch gekennzeichnet, dass sich ein Loch (37, 37a) durch den konkaven Abschnitt (42) der Fingerhalteeinrichtung (40) und die Halterung des Fingerelementes (31), die in dem konkaven Teil angeordnet sind, erstreckt und dass ein stiftförmiges Element (50) in dem Loch (37, 37a) angeordnet ist.
     
    5. Nadelauswahlvorrichtungsmodulfinger nach Anspruch 3, dadurch gekennzeichnet, dass das Fingerelement (31) ein Metall umfasst.
     
    6. Nadelauswahlvorrichtungsmodulfinger nach Anspruch 3, dadurch gekennzeichnet, dass das Fingerelement (31) ein Harz umfasst.
     
    7. Verfahren zur Herstellung eines Nadelauswahlvorrichtungsmodulfingers, umfassend folgende Schritte:

    Herstellen eines Fingerelementes (31) aufweisend (i) einen an dem Stumpf angrenzenden Abschnitt (33) mit einer an den Stumpf angrenzenden Oberfläche (32) an einer Spitze davon, und (ii) eine Halterung (34), die sich von der an den Stumpf angrenzenden Oberfläche (33) erstreckt,
    gekennzeichnet, durch einen Einführungsvorsprung (36),

    Herstellen einer Fingerhalteeinrichtung (40) umfassend:

    (i) einen Verbindungsabschnitt (41) an einem ersten Ende der Fingerhalteeinrichtung (40) an dem ein konkaver Einführungsabschnitt (42a) mit einer inneren Oberfläche, um den Einführungsvorsprung (36) zu stützen, ausgebildet ist, und

    (ii) einen Eingriffsabschnitt (45) an einem zweiten Ende der Fingerhalteeinrichtung (40), welcher mit einem Antriebselement (7) der Nadelauswahlvorrichtung (3) für die Strickmaschine in Eingriff bringbar ist, und

    Anordnen und Vereinigen des Fingerelementes (31) durch Einführen des Einführungsvorsprungs (36) der Halterung (34) des Fingerelementes (31) in den konkaven Einführungsabschnitt (42a) des Verbindungsabschnitts (41) der Fingerhalteeinrichtung (40).


     
    8. Verfahren zur Herstellung des Nadelauswahlvorrichtungsmodulfingers nach Anspruch 7, dadurch gekennzeichnet, dass
    die Fingerelemente (31), die aus einer Vielzahl aus Metallarten hergestellt sind, hergestellt und gelagert werden, um einer Vielzahl an Arten von Strickmustern zu entsprechen, und
    wobei eines der Fingerelemente (31) gemäß einem Strickmuster zur Kombination mit der Fingerhalteeinrichtung (40) ausgewählt wird.
     
    9. Verfahren zur Herstellung des Nadelauswahlvorrichtungsmodulfingers nach Anspruch 7, dadurch gekennzeichnet, dass
    eine Vielzahl von Arten von Fingerhalteeinrichtungen (40) gemäß der Art der Nadelauswahlvorrichtung (3) mittels Kunststoffspritzgussformen hergestellt und gelagert werden und
    wobei eine der Steckerhalteeinrichtungen (40) gemäß der Art von Strickmaschine ausgewählt wird.
     


    Revendications

    1. Sélecteur d'aiguille (3) pour une machine à tricoter, dans lequel une pluralité de clavettes de sélection d'aiguille (12) de la machine à tricoter comprennent chacune au moins un talon (13, 14) en saillie par rapport à cette dernière et qui sont ajustées de façon à pouvoir pivoter dans une pluralité de rainures verticales dans une surface extérieure d'un tambour de tricotage (1) de sorte que des aiguilles de travail (2) en contact avec lesdites clavettes (12) se déplacent verticalement, ledit sélecteur d'aiguille (3) comprenant :

    un doigt de module (30) pour mettre en prise de manière sélective les clavettes de sélection d'aiguille (12) de la machine à tricoter de façon à faire pivoter les clavettes de sélection d'aiguille (12), et

    un élément d'entraînement (7) pour pivoter ledit doigt de module (30) en se basant sur une procédure de tricotage prédéterminée,

    dans lequel ledit doigt de module (30) comprend :

    un élément formant doigt (31) comportant une partie formant butée pour talon (33) ayant une surface de butée pour talon (32) au niveau d'une pointe de ce dernier, et un support (34) s'étendant depuis la partie formant butée pour talon (33) ; et

    un élément de maintien de doigt (40) comprenant : (i) une partie de connexion (41) au niveau d'une première extrémité de ce dernier, ladite partie de connexion (41) possédant une partie concave (42) où une partie du support dudit élément formant doigt (31) est montée pour permettre le positionnement de l'élément formant doigt (31) ; (ii) une partie de mise en prise (45) au niveau d'une seconde extrémité de ce dernier qui peut être mise en prise avec l'élément d'entraînement (7) du sélecteur d'aiguille (3) pour la machine à tricoter ; et (iii) un support de pivot (43) agencé entre les première et seconde extrémités pour définir un point de support de pivot pour ledit doigt de module (30) ;

    caractérisé en ce qu'une partie en saillie d'insertion (36) est formée au niveau d'une partie du support (34) dudit élément formant doigt (31) ;
    dans lequel une partie concave (42a) du type à insertion ayant une surface intérieure pour supporter la partie en saillie d'insertion (36) dudit élément formant doigt (31) est formée au niveau d'une partie de la partie concave (42) dudit élément de maintien de doigt (40), et
    dans lequel ledit élément formant doigt (31) et ledit élément de maintien de doigt (40) sont positionnés et combinés en insérant la partie en saillie d'insertion (36) dans la partie concave (42a) du type à insertion.
     
    2. Sélecteur d'aiguille pour la machine à tricoter selon la revendication 1, caractérisé en ce que l'élément d'entraînement comprend un corps piézoélectrique (7).
     
    3. Doigt de module de sélection d'aiguille (30) pour un sélecteur d'aiguille (3) pour une machine à tricoter, comprenant :

    un élément formant doigt (31) ayant une partie formant butée pour talon (33) avec une surface de butée pour talon (32) au niveau d'une pointe de ce dernier, et un support (34) s'étendant depuis la partie formant butée pour talon (33) ; et

    un élément de maintien de doigt (40) comprenant : (i) une partie de connexion (41) au niveau d'une première extrémité de ce dernier, ladite partie de connexion (41) ayant une partie concave (42) où une partie du support (34) dudit élément formant doigt (31) est montée pour permettre le positionnement de l'élément formant doigt (31) ; (ii) une partie de mise en prise (45) au niveau d'une seconde extrémité de ce dernier qui peut être mise en prise avec un élément d'entraînement (7) du sélecteur d'aiguille (3) pour la machine à tricoter ; et (iii) un support de pivot (43) agencé entre les première et seconde extrémités pour définir un point de support de pivot pour ledit doigt de module (30) ;

    caractérisé en ce qu'une partie en saillie d'insertion (36) est formée au niveau d'une partie du support (34) dudit élément formant doigt (31),
    dans lequel une partie concave (42a) du type à insertion ayant une surface intérieure pour supporter la partie en saillie d'insertion (36) dudit élément formant doigt (31) est formée au niveau d'une partie de la partie concave (42) dudit élément de maintien de doigt (40), et
    dans lequel ledit élément formant doigt (31) et ledit élément de maintien de doigt (40) sont positionnés et combinés en insérant la partie en saillie d'insertion (36) dans la partie concave (42a) du type à insertion.
     
    4. Doigt de module de sélection d'aiguille (30) selon la revendication 3, caractérisé en ce qu'un trou (37, 37a) s'étend à travers la partie concave (42) dudit élément de maintien de doigt (40) et le support dudit élément formant doigt (31) monté dans la partie concave (42), et un élément en forme de broche (50) est agencé dans le trou (37, 37a).
     
    5. Doigt de module de sélection d'aiguille (30) selon la revendication 3, caractérisé en ce que ledit élément formant doigt (31) est composé de métal.
     
    6. Doigt de module de sélection d'aiguille (30) selon la revendication 3, caractérisé en ce que ledit élément formant doigt (31) est composé de résine.
     
    7. Procédé de fabrication d'un doigt de module de sélection d'aiguille (30) comprenant les étapes consistant à :

    fabriquer un élément formant doigt (31) comportant : (i) une partie formant butée pour talon (33) avec une surface de butée pour talon (32) au niveau d'une pointe de ce dernier, et (ii) un support (34) qui s'étend depuis la partie formant butée pour talon (33) caractérisé par une partie en saillie d'insertion (36),

    fabriquer un élément de maintien de doigt (40) comportant : (i) une partie de connexion (41) au niveau d'une première extrémité de ce dernier où une partie concave (42a) du type à insertion ayant une surface intérieure pour supporter la partie en saillie d'insertion (36) est formée, et (ii) une partie de mise en prise (45) au niveau d'une seconde extrémité de ce dernier qui peut être mise en prise avec un élément d'entraînement (7) d'un sélecteur d'aiguille (3) pour une machine à tricoter, et

    positionner et combiner l'élément formant doigt (31) et l'élément de maintien de doigt (40) en insérant la partie en saillie d'insertion (36) du support (34) de l'élément formant doigt (31) dans la partie concave (42a) du type à insertion de la partie de connexion (41) de l'élément de maintien de doigt (40).


     
    8. Procédé de fabrication du doigt de module de sélection d'aiguille (30) selon la revendication 7,
    caractérisé en ce que :

    des éléments formant doigts (31) faits d'une pluralité de types de métaux sont fabriqués et stockés pour correspondre à une pluralité de types de motifs de tricotage, et

    un desdits éléments formant doigts (31) est sélectionné selon un motif de tricotage pour combinaison avec l'élément de maintien de doigt (40).


     
    9. Procédé de fabrication du doigt de module de sélection d'aiguille (30) selon la revendication 7,
    caractérisé en ce que :

    une pluralité de types d'éléments de maintien de doigt (40) sont fabriqués et stockés selon les types de sélecteurs d'aiguille (3) avec des moules à injection en plastique, et

    un desdits éléments de maintien de doigt (40) est sélectionné selon un type de machine à tricoter.


     




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    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