WO1994018366A1 - Method for applying tension to thread for textile machinery and device therefor - Google Patents
Method for applying tension to thread for textile machinery and device therefor Download PDFInfo
- Publication number
- WO1994018366A1 WO1994018366A1 PCT/JP1994/000161 JP9400161W WO9418366A1 WO 1994018366 A1 WO1994018366 A1 WO 1994018366A1 JP 9400161 W JP9400161 W JP 9400161W WO 9418366 A1 WO9418366 A1 WO 9418366A1
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- WO
- WIPO (PCT)
- Prior art keywords
- tension
- yarn
- bobbin
- support shaft
- carrier
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
- D04C3/14—Spool carriers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
- D04C3/14—Spool carriers
- D04C3/18—Spool carriers for vertical spools
Definitions
- the present invention relates to a method and apparatus for imparting yarn tension to a textile machine.
- the present invention relates to a yarn tension applying method and apparatus for a textile machine, and more particularly to a textile machine for producing a three-dimensional braid called a square braider, a magna weave, a three-dimensional braider, or the like.
- the present invention relates to a method and an apparatus for imparting yarn tension which can be effectively used in the above. Background art
- a weaving machine for a three-dimensional fabric of a blade (braid) type as disclosed in Japanese Patent Application Laid-Open No. 414/1756 that is, a carrier for a yarn arranged on a carrier moving surface is carried by a carrier driving mechanism.
- a carrier driving mechanism In a loom in which a three-dimensional fabric is woven by traveling along a required trajectory on a moving surface and organizing the yarns held by the carrier with each other to stitch the three-dimensional fabric, the orientation angle of the yarns is stabilized by proof driving. It is necessary to provide an orientation angle setting means for making the orientation substantially uniform or controlling the orientation angle arbitrarily.
- the present inventor also proposes an effective means for setting the orientation angle in Japanese Patent Application No. Hei 4-180408.
- a blade type three-dimensional loom if weaving is advanced without using this kind of orientation angle setting means, etc., if the amount of yarn pulled out in each weaving cycle of the fabric to be woven is large, the orientation angle of the woven fabric is small. If it is woven and becomes too small, it becomes virtually impossible to say a three-dimensional fabric.
- the orientation angle of the three-dimensional fabric can also be increased by using a yarn tension imparting device as disclosed in Japanese Patent Publication (Kokai) or JP-B-4-47704.
- Kanai Japanese Patent Publication
- JP-B-4-47704 When the bobbin moves away from the center of the woven fabric during weaving, the bobbin moves to move away from the center of the woven fabric. It is necessary to pull out more yarn from the bobbin than the length of the bobbin to be wound, and if the bobbin approaches the center of the fabric, there will be extra thread even if the amount consumed for weaving is subtracted. I need to pull back. Therefore, as described below, the conventional yarn tension applying devices cannot sufficiently cope with them.
- FIG. 16 As a conventionally known yarn tension applying device, a device as schematically shown in FIG. 16 is generally used.
- the thread tension applying device shown in the figure is provided with a clutch 4 having an engagement claw on a bobbin 3 rotatably supported on a support shaft 2 erected at an eccentric position of a carrier 1, and a central portion serving as a fulcrum 6.
- the rotation of the bobbin 3 is restricted by engaging the tip of a swing lever 5 swingably supported on the carrier 1 with an engagement claw of the clutch 4.
- the yarn 7 unwound from the bobbin 3 is led out through the yarn guides 8, 9 and 10.
- the thread guides 8 and 10 are fixedly provided on the carrier 1.
- the thread guide 9 slides along the guide shaft 11 with the urging force of the tension spring 12 by the thread tension.
- the slider 13 is provided. When the tension spring 12 is compressed with a constant biasing force, the slider 13 engages with the contactor 14 connected to one end of the swing lever 5, and the slider 13 receives the biasing force of the return spring 15. Then, the restraint of the bobbin 3 by the swing lever 5 is released.
- the relationship between the fabric and the yarn in the blade-type three-dimensional weaving loom is schematically shown in FIG.
- the yarn that acts in the direction of increasing the density of the woven fabric is the yarn that moves the bobbin from the center of the woven fabric to the outside, that is, the yarn that is unreeled from the bobbin.
- the working thread is the thread that moves the bobbin towards the center of the fabric, that is, the thread that is pulled back to the bobbin.
- the yarn guide 10 for drawing out the yarn from the bobbin 3 is disposed above the bobbin support shaft 2 erected at the center of the carrier 1, so that the bobbin 3 has a larger winding amount and the weaving operation is performed during the weaving operation.
- the conventionally known yarn tension applying device shown in Fig. 16 does not contact the carriers even when the carriers approach each other.
- the bobbin and the tension applying mechanism are arranged in the space above, and at this time, the bobbin support shaft 2 is eccentric with respect to the carrier center line so that the tension applying mechanism does not hinder the operation when attaching and detaching the bobbin for supplying the thread. ing.
- the bobbin suspicion is reduced by the eccentric amount, and the thread winding amount is reduced.
- the tension applying mechanism is located beside the bobbin, it is easy to remove and attach the bobbin for replacement.However, since the thread 7 is led out from a position deviated from the center of the carrier, the carrier is woven. It is not always possible to apply a constant tension to the yarn when it moves and rotates as it progresses.
- the tension applying mechanism is arranged on the bobbin support shaft 2 erected at the center of the carrier 1, and the thread guide 10 for leading out the thread 7 from the bobbin 3 is provided at the center of the carrier 1. 2 will be placed above, but in this case It is necessary to make the bobbin 3 easy to attach and detach for replacement etc. by some means. In particular, in a textile machine for producing a three-dimensional woven fabric such as a three-dimensional braid, it is necessary to arrange and drive a large number of carriers on the carrier moving surface, which requires a small-sized and small-diameter yarn tension applying device. Therefore, it becomes more difficult to attach and detach the bobbin. Disclosure of the invention
- the main object of the present invention is to make it possible to easily weave the above-described three-dimensional fabric having a large orientation angle, so that the yarn has a large yarn tension at the time of drawing out the yarn, and the yarn having a large amount of pullback but a small amount of yarn at the time of pullback.
- An object of the present invention is to provide a yarn tension applying method and an apparatus for applying a tension.
- Another object of the present invention is to cause a carrier of a yarn disposed on a carrier moving surface to travel along a required locus within the moving surface by a carrier driving mechanism, and to organize the yarns held by the carrier.
- the present invention provides a method or apparatus for applying a yarn tension for a textile machine for weaving a three-dimensional woven fabric, thereby effectively providing a proof driving effect for increasing the orientation angle of the woven fabric.
- Another object of the present invention is to obtain not only the prunching effect that can increase the orientation angle of the woven fabric but also the effect of reducing fluff by lowering the tension of the yarn at the time of retraction with large bending. It is to provide a yarn tension applying means.
- Another object of the present invention is to provide a high-tension mechanism and a low-tension mechanism on a carrier, apply a large yarn tension to the yarn by the high-tension mechanism when the yarn is fed, and a high-tension mechanism when the yarn is pulled back. It is an object of the present invention to provide a yarn tension applying method and an apparatus for applying a small yarn tension by a low tension mechanism from a position exceeding a pull-back limit of the yarn. Another object of the present invention is to provide a yarn tension applying device for a textile machine for producing a three-dimensional fabric.
- the support member of the high tension mechanism can be easily attached to and detached from the upper end of the bobbin support shaft erected at the center of the carrier, or the bobbin support shaft can be easily attached to and detached from the carrier.
- An object of the present invention is to provide a yarn tension applying device which can perform stable weaving and facilitates bobbin replacement.
- Another object of the present invention is to provide a yarn tension applying device capable of adjusting the yarn feeding tension in a high tension mechanism by a simple means and allowing the adjustment state to be easily visually recognized from the outside. To get.
- Another object of the present invention is to provide a yarn tension applying device in which the urging force of the return spring in the low tension mechanism is stably kept substantially constant.
- Still another object of the present invention is to provide a simple and compact tension with few failures in which a substantially constant tension is applied to the above-mentioned yarn, and at the same time, the yarn can be pulled back to an extent that the generation of the slack can be suppressed. It is to obtain an application device.
- a yarn tension applying method is characterized in that a carrier of a yarn arranged on a carrier moving surface is caused to travel along a required trajectory in the moving surface by a carrier driving mechanism and is held by the carrier.
- a high tension with a small retraction amount and a large extension tension is applied.
- a low tension mechanism provided between the carrier and the bobbin provides a low tension force with a large retraction amount and a small extension tension to the bobbin.
- the high tension mechanism applies a large amount of tension to the yarn when the yarn is fed out, and the tension decreases when the yarn exceeds the withdrawal limit of the high tension mechanism when the yarn is pulled back. It is characterized in that a small thread tension is applied by a force mechanism.
- the yarn tension applying device of the present invention is a yarn carrier for a yarn disposed on a carrier moving surface.
- a high tension mechanism with a small amount of retraction and a large feeding tension is provided for the yarn led out from the bobbin, and a large amount of retraction is provided between the carrier and the bobbin.
- a low-tension mechanism with a small tension is provided.
- the high-tension mechanism applies a large yarn tension to the yarn when the yarn is fed, and the low-tension mechanism pulls back the high-tension mechanism when the yarn is pulled back. It is characterized in that a small thread tension is applied to the yarn from a point beyond the limit.
- a support member attached to a bobbin support shaft on a carrier is configured to swingably support a tension applying lever having a claw that is engaged with and disengaged from a clutch claw provided on a bobbin.
- a thread guide that tilts the tension applying lever in a direction in which the above-mentioned claw is disengaged from the clutch by the tension of the thread when a constant tension acts on the thread that has been led out at the tip of the tension applying lever.
- a high-tension applying means for applying high tension to the yarn is applied to the other end of the lever.
- a tension applying lever is provided as the high-tension applying means.
- a tension spring that exerts a biasing force on the end can be used.
- a spring accommodating chamber is provided around a bobbin support shaft on a carrier to accommodate a spiral return spring, and the inner end of the return spring is supported by the bobbin support.
- the return spring is fixed to a bobbin connection member rotatably fitted to a shaft and connected to a bobbin, and the outer end side of the return spring is reduced in diameter when the amount of winding of the spring exceeds the winding limit.
- the high tension mechanism operates, and the lever tilts due to the operation of the yarn passing through the yarn guide of the tension applying lever,
- the claw of the lever is disengaged from the clutch of the bobbin, and the bobbin is rotated by the thread tension, and the thread is fed.
- the tension is reduced by drawing out the thread and the tension applying lever returns accordingly, the pawl is engaged with the clutch and the rotation of the bobbin is suppressed. Accordingly, a high tension corresponding to the spring force is always applied to the yarn by the balance between the tension acting on the yarn and the urging force of the tension spring.
- the return spring of the low tension mechanism When the yarn is fed by the action of the high tension mechanism, the return spring of the low tension mechanism is wound up by the rotation of the bobbin. When the winding amount exceeds the winding limit, the leading end side of the return spring and the inside of the spring accommodating chamber. The engagement of the unevenness with the peripheral surface is released, and the unevenness is engaged again at a position shifted in the bobbin rotation direction.
- the bobbin is rotatably inserted into a bobbin support shaft provided upright at the center of the carrier, and the bobbin support shaft is unwound from the bobbin at the tip of the bobbin support shaft.
- a support member provided with a guide for drawing out a thread drawn out of the support member can be non-rotatably attached detachably, and when attaching the support member, the tip of a bobbin support shaft provided on the support member is fitted.
- a fixing pin is erected in the hole, a split groove having a width smaller than the diameter of the fixing pin is provided at the tip of the bobbin support shaft, and a concave portion in which the fixing pin is fitted is provided on an opposing surface in the split groove. In this case, the fixing pin can be held in an elastic pressing and holding state.
- an elastic pin When attaching the support member to the bobbin support shaft, an elastic pin is erected in a fitting hole at the end of the bobbin support shaft provided on the support member, and a concave portion into which the elastic pin fits into a side surface of the end of the bobbin support shaft.
- the elastic pin can be elastically pressed against the bobbin support shaft in the concave portion.
- the elastic pin in the shaft head of the bobbin support shaft or the fitting hole is not elastically deformed.
- they are fitted on the bobbin support shaft, and the pins in the fitting holes fall into the recesses provided in the shaft head, so that the two can be easily detachably connected to each other, and the support member is attached to the upper end of the bobbin support shaft. It is possible to easily replace the bobbin in spite of the fact that the pin in the insertion hole and the shaft head of the bobbin support shaft are elastically pressed against each other.
- the support members can be connected by stably restraining the movement in the axial and rotational directions.
- the bobbin support shaft cannot rotate around the center of the carrier.
- the bobbin support shaft is rotatably inserted into the bobbin support shaft, and a thread unwound from the bobbin and drawn out from above the bobbin support shaft at the end of the bobbin support shaft.
- a U-shaped pin is installed in the insertion hole of the bobbin support wheel provided on the carrier, and the tip of the bobbin support shaft is mounted.
- the U-shaped pin is provided with a tapered portion to expand the U-shaped pin, and a U-shaped pin beyond the tapered portion is fitted into the recessed portion. In this recess, the bobbin support shaft is elastically pressed and clamped by the U-shaped pin. Can be retained.
- a tension spring is externally fitted to a guide shaft provided on a support member on a bobbin support shaft, and the tension spring is attached to the end of the tension applying lever and the guide shaft.
- Grooves for fixing the spring bearings are arranged on the guide shaft at appropriate intervals, and the spring bearings are attached to the guide shaft via an elastic ring. The urging force of the tension spring acting on the end of the lever can be adjusted.
- the panel receiver on the guide shaft is fixed to the groove at an appropriate position via an elastic ring, and adjusting the urging force of the tension spring in the high tension mechanism makes it easy to adjust the yarn feeding tension. In addition to being able to make adjustments, the adjustment state can be easily visually recognized from the outside.
- a spiral return thread The rigidity inside the winding diameter is small and the outside rigidity can be increased.
- the rigid spring is connected to the distal end of the weaker proximal spring by connecting the distal spring with higher rigidity. You can also.
- the base end side having low rigidity by the return spring is relatively easy.
- the front end, which has high rigidity, cannot be reduced in diameter unless the tightening force acting on the return spring has increased to some extent, so that the entire return spring is fully tightened. After that, the engagement between the distal end side and the peripheral surface of the spring accommodating chamber due to the unevenness is released, so that the biasing force of the return spring is stably maintained substantially constant.
- FIG. 1 is a side sectional view of an embodiment of the yarn tension applying device according to the present invention.
- FIG. 2 is a partially broken plan view of the same.
- FIG. 3 is a cross-sectional view showing the low tension mechanism in the above embodiment.
- FIG. 4 is a cross-sectional view showing the detached state of the hook in the low tension mechanism.
- FIG. 5 is a cross-sectional view of a main part showing details of the tension adjusting device in the above embodiment.
- 6A to 6C are perspective views showing examples of the structure of an elastic ring in the tension adjusting device.
- FIGS. 7A to 7C are cross-sectional views of essential parts sequentially showing the mounting state of the bobbin support shaft and the support member of the high tension mechanism in the above embodiment.
- FIG. 8 is a perspective view of a main part showing another structural example of a mounting mechanism of the bobbin support shaft and the support member of the high tension mechanism.
- FIG. 9 is a perspective view showing the configuration of the return spring in the low tension mechanism of the embodiment. '.
- FIG. 10 is an exploded perspective view showing another example of the structure of the low tension mechanism.
- FIGS. 11A to 11C are perspective views showing different configuration examples of the return spring in the low tension mechanism.
- FIG. 12 is an exploded perspective view of the low tension mechanism using the return spring shown in FIG. 11C.
- FIG. 13 is a cross-sectional view of a main part of an embodiment in which a bobbin support shaft is detachable from a carrier.
- FIG. 14 is a bottom view of the carrier according to the embodiment.
- FIG. 15 is an exploded perspective view of a main part for describing a mounting structure of a bobbin support shaft in the embodiment.
- FIG. 16 is a conceptual view of a conventional general yarn tension applying device.
- FIG. 17 is an explanatory diagram schematically showing a relationship between a woven fabric and a yarn in a blade-type three-dimensional woven loom.
- This yarn tension applying device is a textile machine for producing a three-dimensional fabric such as a braid (Japanese Patent Laid-Open No.
- the yarn wound on the bobbin is set on each of a number of carriers 20 that are driven along a required path by the carrier driving mechanism in the carrier moving surface, and the carriage 20 is controlled to travel.
- a three-dimensional fabric is woven by organizing each other.
- the carrier 20 has a structure suitable for traveling along a required trajectory by the carrier driving mechanism.
- the carrier 20 is sandwiched between a pair of rotors. Of the spindle type.
- the cross-sectional shape of the carrier on a vertical plane perpendicular to the plane of the paper is indicated by a two-dot chain line.
- this yarn tension applying device is composed of a high tension mechanism 21 having a small amount of retraction and a large feeding tension, and a low tension mechanism 22 having a large amount of retraction and a small feeding tension.
- a bobbin support shaft 26 is erected at the center of the carrier 20 and a bobbin 23 having a thread 24 wound around the support shaft 26 is rotatable.
- the bobbin 23 is inserted into the bobbin connecting member 27 of the low tension mechanism 22 provided between the carrier 20 and the bobbin 23 so that the bobbin 23 does not rotate relative to each other due to the engagement of the engaging claws 28.
- the bobbin connecting member 27 is connected so as to be able to come and go, and is supported on the bobbin connecting member 27.
- a support member 30 of the high tension mechanism 21 is connected to an upper end of the support shaft 26 by a fixing pin 29.
- the support member 30 of the high tension mechanism 21 is located at the lower end of the hanging part hanging down around the bobbin 23, and guides the yarn 24 unwound from the bobbin 23. Guides the thread 24 at a position higher than the tension applying lever 34 on the support member 30.
- the thread guide 22 and the thread 24 at the tip of the support member 30 on the center of the carrier 20 A yarn derivation guide 33 for guiding derivation is provided.
- the tension applying lever 34 allows the support member 30 to pivotally support the intermediate portion by a pin 25, and the bobbin is pivoted by the lever 34 in the vicinity thereof.
- a claw 36 is provided for engaging and disengaging the claw portion of the clutch 35 provided on the end surface of the 23. Further, the tip of the tension applying lever 34 is opposed to the thread guide 32, and when the claw 36 is engaged with the claw portion of the clutch 35, the tip is somewhat larger than the thread guide 32.
- a thread guide 37 located below is provided, and a tension spring 33 for applying a high tension to the thread 24 is pressed to the other end.
- the tension spring 38 is composed of a panel receiver 40 held on a guide shaft 39 fixed to the support member 30 and a tension applying lever 3 4 loosely inserted into the guide shaft 39.
- the tension springs 38 can arbitrarily set the tension applied to the tension applying levers 34, but the yarns 24 can be pulled back only within the swing range of the levers 34. Since it is performed, the amount of retraction is relatively small.
- the thread guide 37 provided at the tip of the tension applying lever 34 is provided with a thread 2 4 derived from the thread guide 32 of the support member 30 through the thread guide 37 and the derivation guide 33 on the support member.
- the lever 34 is tilted by the thread 24 inserted through the thread guide 37 to disengage the pawl 36 of the lever 34 from the pawl of the clutch 35. It is for.
- the thread guide 32 of the support member 30, the thread guide 37 on the lever 34, and the lead-out guide 33 on the support member 30, the thread 24 inserted through them bends into a V shape. It is arranged as follows. —
- the low tension mechanism 22 is provided between the carrier 20 and the bobbin 23.
- the carrier 20 is provided with a hollow cylindrical spring accommodating chamber 42 around a support shaft 26 standing upright.
- a bobbin connecting member in which a spiral wound return spring 43 described later with reference to FIG. 9 is accommodated in the ring accommodating chamber 42, and the inner end of the return spring 43 is rotatably fitted to the center support shaft 26.
- the outer end hook 44 is engaged with one of the notches 45 provided at an appropriate interval on the inner peripheral surface of the spring accommodating chamber 42. .
- the high tension mechanism 21 operates.
- the yarn 24 led out from the bobbin 23 through the thread guides 31, 32 of the support member 30, the thread guide 37 on the lever 34, and the lead-out guide 33 on the support member 30.
- the tension imparting lever 34 is tilted by the force acting on the yarn guide 37 by being piled with the urging force of the tension cuff 38.
- the feeding tension of the yarn 24 can be easily increased due to its structure, but on the other hand, the yarn pullback amount is small.
- the bobbin 23 and the bobbin connecting member 27 rotate in the direction of the arrow in FIG. 3, and the rotation causes the low tension mechanism to rotate. 22
- the return spring 43 is wound up onto the cylindrical shaft 27a of the connecting member 27, and the force of the return spring 43 acts on the bobbin 23 as a force in the direction of winding the yarn. I do. Then, as the winding of the return spring 43 progresses, the return spring 43 is gradually tightened to a smaller diameter. When the amount of winding exceeds the winding limit, the diameter from the state in FIG.
- the tension applied to the yarn 24 by the return spring 43 in the low tension mechanism 22 is set smaller than the tension applied to the yarn by the tension spring 38 of the high tension mechanism 21.
- the structure of the thread is smaller than that of the high tension mechanism 21 because of its structure.
- the retraction amount of Article 24 can be set sufficiently large.
- the pawl 36 of the tension applying lever 34 in the high tension mechanism 21 repeatedly engages and disengages with the pawl of the clutch 35, and the tension generated by the low tension mechanism 22 is Does not act on 4.
- the urging force applied to the tension applying lever 34 by the tension spring 38 is configured to be appropriately adjustable by a simple mechanism.
- a guide shaft 39 fixed to the support member 30 of the high tension mechanism 21 is provided with a panel receiver 40 of a tension spring 39 so as to be adjustable in position.
- a number of grooves 46 for fixing 0 are arranged in a row at an appropriate interval, and a panel receiver 40 can be locked to an arbitrary one of the grooves 46 via an elastic ring 47.
- Fig. 5 shows the structure for mounting the panel receiver 40 on the guide shaft 39 and the For example, when the panel receiver 40 is attached to the groove 46 of the guide shaft 39 via the elastic ring 47, the center of the panel receiver 40 is set as shown by the chain line in FIG. Press-fitting the panel receiver 4 OA containing the elastic ring 47 in the inner peripheral groove 48 of the hole into the shaft end of the guide shaft 39, and displacing the panel receiver 40B in the press-fit state as it is, the elastic ring What is necessary is just to move to the position where 47 fits into the intended groove 46.
- the elastic ring 47 has a 0-ring-shaped ring 47A made of an elastic material such as rubber, and has a cut in part as illustrated in FIG.
- An elastic metal ring 47B, as shown in FIG. C, a ring 47C formed by connecting both ends of a coil panel by screwing can be used.
- Such a configuration is advantageous in that the adjustment state of the biasing force of the tension spring can be visually recognized from the position of the panel receiver 40 from the outside, and the adjustment state of the tension can be confirmed.
- the high-tension mechanism 21 is not limited to the above-described structure using the tension spring 38, but instead employs a brake or a weight, or other conventionally known various methods. Can also be used.
- the support member 30 of the high tension mechanism 21 supports the entire mechanism except the bobbin 23 inserted into the support shaft 26 on the carrier 20, and therefore, is supported from the tip of the bobbin support shaft 26. By making the holding member 30 easily removable, the bobbin 23 can be easily replaced.
- the support member 30 is provided with a fitting insertion hole 50 for the bobbin support shaft 26.
- a fixing pin 29 orthogonal to the axis is provided in this fitting hole 50.
- the fixing pin 29 has a slightly narrower split groove 51 on the shaft head 26a having a tapered outer surface of the bobbin support shaft 26, and the split groove 51 has A concave portion 52 into which the fixing pin 29 is fitted is provided on the facing surface.
- the concave portion 52 is configured such that the divided shaft head 26 a of the support shaft 26 can accommodate the fixing pin 29 in a slightly elastically opened state.
- the pin 29 is held in an elastic pressing state by the divided shaft head 26 a of the support shaft 26. Further, the outer peripheral surface of the shaft head 26a is formed in a tapered shape to allow elastic deformation at the time of insertion, but the bobbin support shaft 26 is completely attached to the insertion hole 50. In order to prevent the rattling in the state, the divided base 26 b of the divided shaft head 26 a to be fitted into the fitting hole 50 at that time is closely fitted to the fitting hole 50. I have.
- the fixing pin 29 for example, a normal pin having a rod shape, a hollow pin partially having a crack, and the fixing pin itself being elastically changed in diameter. Things.
- the shaft head 26a of the bobbin support shaft 26 is elastically pressed against the fixing pin 29 in the insertion hole 50, the axial direction and the rotation direction of the bobbin support shaft 26 are changed.
- the support member 30 is connected by stably restraining the movement in the direction.
- the tension control unit 21 may be simply raised by holding the support member 30 of the tension control unit 21. Therefore, even in a thread tension applying device in which the bobbin support shaft 26 is provided upright at the center of the carrier 20, the bobbin 23 can be easily replaced by removing the support member 30, and the replacement can be performed by using a tool or the like. Can be easily carried out without using any.
- FIG. 8 shows another embodiment of the mounting mechanism of the support member 30.
- This mounting mechanism includes a U-shaped support member 55 configured as a part of the support member 30 in the high tension mechanism 21 of the embodiment, and a bobbin support shaft 26 is fitted into the support member 55. ⁇ Form a hole 56, and fit an S-shaped bent elastic pin 58 into the E-shaped pin support hole 57 provided on both sides 55a of the support member 55.
- the central portion 58a of the elastic pin 58 is elastically displaceable on one side of 56, and the central portion 58a of the elastic pin 58 fits into the side of the tip of the bobbin support shaft 26.
- the elastic pin 58 is elastically pressed against the bobbin support shaft 26 in the concave portion 59.
- the spiral-shaped return spring 43 constituting the low-tension mechanism 22 has its inner end fixed to the cylindrical shaft portion 27a of the bobbin connecting member 27, and At the end side, a hook 44 is provided which engages a notch 45 on the inner peripheral surface of the spring accommodating chamber 42.
- This hook as clearly shown in FIG.
- the hook 61 can be formed as a hook.
- a notch hole 63 is provided in a spiral return spring 62 similar to the return spring 43, and a notch hole 63 is formed in an inner peripheral surface of the spring accommodating chamber 64 provided in the carrier 20.
- An appropriate number of hooks 65 for engaging the notches 63 can also be provided.
- Such a problem can be solved by using a return spring whose stiffness on the inner side of the winding diameter is weaker and whose stiffness on the outer side is increased, as described below with reference to FIGS. Can be turned off.
- FIGS. 11A and 11B show the basic structure for realizing this.
- the return spring 71 of FIG. 11A the base end of a panel panel with a constant plate thickness (the inner end when winding up) Side), the width is increased toward the distal end, thereby reducing the rigidity inside the winding diameter of the return spring 71 and increasing the rigidity outside.
- a large number of engagement holes 72 are provided, which engage with projections (described later with reference to FIG. 12) arranged in the spring accommodating chamber.
- the thickness of the proximal side of the panel panel having a constant plate width is reduced, and the thickness is increased toward the distal end side.
- the rigidity inside the winding diameter is low and the rigidity outside is large.
- a large number of engagement holes 74 are also provided at the tip of the return spring 73 to engage with the projections in the spring accommodating chamber.
- the distal end of the rigid base spring 75 a is connected to the distal end spring 75 b of high rigidity.
- a return spring 75 is formed that has a low rigidity and a large outer rigidity.
- a number of engagement holes 76 are formed in the distal end side spring 75b so as to engage with the projections in the spring accommodating chamber, as in the case of FIGS. 11A and 11B.
- An engagement head 78 is provided at the proximal end of the distal spring 75b, and is passed through one of the locking holes 77 arranged at the distal end of the proximal spring 75a.
- the rigidity of the return spring 75 can be set appropriately while adjusting the overall length of the return spring 75 to a certain extent.
- FIG. 12 shows the configuration of the low tension mechanism when the return spring 75 of FIG. 11C is used.
- the bobbin support shaft 82 is erected on the carrier body 81 constituting the carrier 20.
- the cylindrical shaft portion 83a of the bobbin connecting member is rotatably supported on the support shaft 82, and a spring storage chamber 85 is provided between the carrier body 81 and a casing 84 fixedly mounted thereon. It is formed and returned to the spring storage chamber 85 to accommodate the spring 75.
- the return spring 75 is formed by connecting the base end of the base-side spring 75 a to the cylindrical shaft portion 83 a, winding it in a spiral shape, and connecting it to the end thereof. Are pressed into contact with the inner peripheral surface of the spring storage chamber 85, and a number of engagement holes 76 arranged in a row on the distal spring 75b fit into the inner peripheral surface of the spring storage chamber 85. A large number of truncated pyramid-shaped protrusions 86 are arranged at the same pitch as the engagement holes 76.
- the cylindrical shaft portion 83a is rotated through the bobbin and the bobbin connecting member (not shown) by deriving the yarn, and the return spring 7 associated with the rotation is rotated.
- an engagement hole 76 of the distal spring 75 b is provided on the inner peripheral surface of the spring accommodating chamber 85. The return spring 75 is released from the truncated pyramid-shaped protrusion 86, and rotates in the rewinding direction by its own urging force.
- the size of the return spring 75 becomes larger, the engagement holes 76 of the distal spring 75 b are shifted by one pitch in the bobbin rotation direction, and the engagement holes 76 are adjacent again. It engages with the projection 86, and returns to its original state even if the urging force of the return spring 75 drops slightly.
- the rigidity of the proximal spring 75 a is reduced and the rigidity of the distal spring 75 b is increased, so that the proximal spring 75 a having low rigidity is relatively easily deformed.
- the distal spring 75 b which is tightly wound but has high rigidity, is Only after the force from the end spring 75 a has increased to a certain extent does it undergo significant deformation due to shrinkage, so that the entire return spring 75 is fully wound and tightened.
- the engaging holes 76 of the springs 75 b are displaced by one pitch in the bobbin rotation direction so that the engaging holes 176 engage with the adjacent projections 86, and the urging force of the return spring 75 is reduced. It is stably maintained substantially constant.
- a bobbin support shaft 26 is fixedly erected at the center of the carrier 20, as is clear from FIGS. 1, 7A to 7C and FIG.
- the bobbin 23 is rotatably inserted into the bobbin 6, and the supporting member 30 of the high tension mechanism 21 is removably attached to the end of the bobbin support shaft 26.
- the embodiment shown in FIGS. 13 to 15 The bobbin support shaft 26 is non-rotatably mounted at the center of the carrier 20 so that the bobbin 23 can be attached and detached upright, and the bobbin 23 can be detached from the carrier 20 together with the bobbin support shaft 26 and the support member of the high tension mechanism. It can be.
- a bobbin support shaft 92 is attached and detached in a carrier body 91 constituting a carrier 20.
- a carrier body 91 constituting a carrier 20.
- an oval groove 94 whose inner end is cut off around the insertion hole 93 is formed in a U-shape.
- the bent U-shaped pin 95 is fitted into the groove 94 so as not to be easily detached, and the U-shaped pin 95 is inserted into the groove 9 so that the legs 95 a of the U-shaped pin 95 sandwich the fitting hole 93. It is erected inside 4.
- tapered portions 96 are provided on both sides to push and spread both legs 95a of the U-shaped pin 95, and the tapered portions 96 are provided.
- a recess 97 is provided in which the leg 95 of the U-shaped pin 95 exceeds the portion 96, and the leg of the U-shaped pin 95 is provided in the recess 97 when the bobbin support shaft 92 is inserted.
- the bobbin support shaft 92 is held in an elastic pressing and holding state by 95a.
- the configuration of the low tension mechanism 22 in this embodiment is substantially the same as the case shown in FIG.
- the operation of the textile machine is started.
- the bobbin 23 is replaced, the bobbin 23 is removed from the carrier body 91 together with the bobbin support shaft 92 and the support member of the high tension mechanism attached thereto, and the thread is removed.
- Preparation of the thread such as threading for the guide can be performed, and at this time, the work can be performed while the bobbin 23 is held on the bobbin support shaft 92. It can be done easily.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94905843A EP0636726B1 (en) | 1993-02-03 | 1994-02-03 | Method for applying tension to thread for textile machinery and device therefor |
US08/313,043 US5584223A (en) | 1993-02-03 | 1994-02-03 | Yarn tensioning device for textile weaving machines |
DE69412726T DE69412726T2 (de) | 1993-02-03 | 1994-02-03 | Verfahren zum spannen von einem faden an textilmaschinen und vorrichtung dazu |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5/39551 | 1993-02-03 | ||
JP3955193 | 1993-02-03 | ||
JP5/90834 | 1993-03-25 | ||
JP9083593 | 1993-03-25 | ||
JP9083493 | 1993-03-25 | ||
JP5/90833 | 1993-03-25 | ||
JP9083393 | 1993-03-25 | ||
JP5/90835 | 1993-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994018366A1 true WO1994018366A1 (en) | 1994-08-18 |
Family
ID=27460772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1994/000161 WO1994018366A1 (en) | 1993-02-03 | 1994-02-03 | Method for applying tension to thread for textile machinery and device therefor |
Country Status (4)
Country | Link |
---|---|
US (3) | US5584223A (ja) |
EP (1) | EP0636726B1 (ja) |
DE (1) | DE69412726T2 (ja) |
WO (1) | WO1994018366A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7077167B2 (en) * | 2004-06-14 | 2006-07-18 | Massachusetts Institute Of Technology | Bias weaving machine |
KR200474186Y1 (ko) | 2013-06-05 | 2014-08-29 | 성일산업주식회사 | 편조기 케리어용 이탈방지 구조를 구비한 보빈캡. |
CN103757818B (zh) * | 2014-01-29 | 2016-01-13 | 陕西普声电气有限公司 | 碳纤维三维织物编织机 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5236062Y1 (ja) * | 1967-05-02 | 1977-08-17 | ||
JPH0319947A (ja) * | 1989-06-13 | 1991-01-29 | Atlantic Res Corp | 糸まき装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US447108A (en) * | 1891-02-24 | Carrier for braiding-machines | ||
US998031A (en) * | 1906-05-14 | 1911-07-18 | New England Butt Company | Bobbin-carrier. |
US1135702A (en) * | 1912-12-02 | 1915-04-13 | John Larson | Tension device for spools. |
DE730307C (de) * | 1938-04-28 | 1943-01-13 | Paul Caspers | Kloeppel fuer Flecht- und Kloeppelmaschinen |
CH309152A (de) * | 1953-11-17 | 1955-08-31 | Rey Rudolf | Klöppel für Flechtmaschine. |
US2897716A (en) * | 1956-02-10 | 1959-08-04 | Wanskuck Co | Braider carrier |
US5156079A (en) * | 1990-06-05 | 1992-10-20 | North Carolina State University | Yarn carrier apparatus for braiding machines and the like |
US5220859A (en) * | 1990-08-06 | 1993-06-22 | Deyoung Simon A | Strand carrier for a braiding machine |
US5146836A (en) * | 1990-08-06 | 1992-09-15 | Deyoung Simon A | Strand carrier for a braiding machine |
CA2053471A1 (en) * | 1990-10-30 | 1992-05-01 | Ilya Koyfman | Braider apparatus with improved bobbin holder |
JPH05236062A (ja) * | 1992-02-12 | 1993-09-10 | Nec Corp | 回線障害時の負荷制御方式 |
-
1994
- 1994-02-03 DE DE69412726T patent/DE69412726T2/de not_active Expired - Fee Related
- 1994-02-03 US US08/313,043 patent/US5584223A/en not_active Expired - Fee Related
- 1994-02-03 WO PCT/JP1994/000161 patent/WO1994018366A1/ja active IP Right Grant
- 1994-02-03 EP EP94905843A patent/EP0636726B1/en not_active Expired - Lifetime
-
1996
- 1996-10-01 US US08/720,753 patent/US5870940A/en not_active Expired - Fee Related
- 1996-10-01 US US08/720,754 patent/US5749281A/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5236062Y1 (ja) * | 1967-05-02 | 1977-08-17 | ||
JPH0319947A (ja) * | 1989-06-13 | 1991-01-29 | Atlantic Res Corp | 糸まき装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0636726A4 * |
Also Published As
Publication number | Publication date |
---|---|
US5870940A (en) | 1999-02-16 |
US5584223A (en) | 1996-12-17 |
EP0636726B1 (en) | 1998-08-26 |
US5749281A (en) | 1998-05-12 |
EP0636726A4 (en) | 1995-06-14 |
EP0636726A1 (en) | 1995-02-01 |
DE69412726D1 (de) | 1998-10-01 |
DE69412726T2 (de) | 1999-04-08 |
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