JP2008019536A - Device for adjusting core thread tension in core yarn producing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for adjusting core thread tension, which enable the change of winding angle of the core thread relative to a tenser, fine adjustment of the tension of the core thread and the adjustment of the tension on thread-connection by the tenser provided on the feeding line of the core thread in an apparatus for producing core yarn. <P>SOLUTION: This apparatus for producing the core yarn while feeding the core thread F toward a drafted fiber bundle 4 and effecting revolving air flow to produce the core yarn by the fiber bundle and core thread is provided by installing the tenser 21 including an upstream side yarn guide 22 and a downstream side yarn guide 23 on the feeding line of the core thread, and including a yarn guide position-changing means 33 for changing the position of at least any one of the upstream side yarn guide and downstream side yarn guide to enable the change of winding angle of the core thread relative to the tenser. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a tension adjusting device for adjusting the tension of a core yarn when the core yarn is supplied at the time of manufacturing a core yarn.

Conventionally, a core yarn is manufactured by supplying a core yarn such as a filament yarn or a spun yarn to a fiber bundle drafted by a drafting device, introducing and passing the yarn into an air spinning nozzle, and by the action of the swirling air flow Manufacturing apparatuses and manufacturing methods are well known.

When spinning a core yarn using a conventional core yarn manufacturing apparatus, it is necessary to apply a certain tension to the core yarn in order to align the yarn characters. On the other hand, in the automatic core yarn manufacturing apparatus, when supplying the core yarn at the time of piecing, the core yarn cannot be supplied if excessive tension is applied. There is.

As described above, in the core yarn manufacturing apparatus, when the core yarn is supplied to the drafted fiber bundle, it is necessary to adjust the tension of the core yarn according to the situation, and there are several types of tencers for that purpose. Is provided.

As a tensor for adjusting the tension of the core yarn, for example, a spring pressure type tensor 10 as shown in Patent Document 1 is known. The spring pressurizing type tensor 10 is configured to pass the core yarn between the face-to-face tensor pieces and press the space between the tensor pieces by means of a spring to adjust the tension of the core yarn. Since the spring pressurizing type tensor 10 is a pressurizing type using a spring, a desired tension could not be accurately applied to the core yarn.

On the other hand, a disk tensor 16 using a ring-shaped weight 22 as shown in Patent Document 2 has been developed. The disk tensor 16 includes a frame 18 having thread guide holes 17 and 17 corresponding to both ends. A rod 19 is provided upright at a substantially central portion of the frame 18. A plate-like lower tensor piece 20 is fitted, and a dish-like upper tensor piece 21 is fitted so as to overlap the lower tensor piece 20 so as to be movable up and down. The filament yarn F is sandwiched between the two tensers 20 and 21, and a desired tension is applied to the filament yarn F.

9A and 9B, the conventional disk tensor 51 has a constant yarn path 55 formed between the yarn guide hole 52 on the yarn supply side, the tension applying portion 53, and the yarn guide hole 54 on the outlet side. For this reason, the tension adjustment for the core yarn F depends only on the ring-shaped weight 56, and the tension when the ring-shaped weight 56 is lifted is determined by bending, and thus cannot be changed. Furthermore, the minimum tension given could not be set below the bending tension.

In short, in the adjustment by the ring-shaped weight 56 of the conventional disk tensor shown in FIGS. 9A and 9B and the lifting mechanism by the cylinder 57, the tension adjustment with respect to the core yarn depends only on the amount of the weight, and fine adjustment Is difficult. Further, the tension at the time of piecing needs to be adjusted according to the character of the core yarn, easy to get on the wind, and easily tangled. However, this conventional method cannot be adjusted because the weight is released by the cylinder 57.

Japanese Utility Model Publication No. 6-50547 (FIGS. 1 and 2) JP-A-4-352820 (paragraph number 0011, FIG. 4) Japanese Patent No. 3080113 (FIG. 5)

Therefore, the present invention has been made to solve the problems found in the prior art described above, and a particularly important element is a core yarn manufacturing apparatus for manufacturing a core yarn by using a drafted fiber bundle and a core yarn. A tensor is provided on the core yarn supply line, and the winding angle of the core yarn around the tensor can be changed to finely adjust the tension of the core yarn during spinning and adjust the tension at the time of splicing The present invention provides a tension adjusting device for a core yarn in a core yarn manufacturing apparatus.

In order to achieve the above-described object, the present invention specifically manufactures a core yarn from the fiber bundle and the core yarn by supplying a core air to the drafted fiber bundle and applying a swirling air flow. In the core yarn manufacturing apparatus, a tensor having an upstream yarn guide and a downstream yarn guide is provided on the core yarn supply line, and the position of at least one of the upstream yarn guide and the downstream yarn guide with respect to the tencer is changed. And a yarn guide position changing means for adjusting the tension of the core yarn in the core yarn manufacturing apparatus, wherein the winding angle of the core yarn around the tensor can be changed.

Further, in this invention, the invention according to claim 2 is the tension adjusting device for the core yarn in the core yarn manufacturing apparatus according to claim 1, wherein the yarn guide position changing means is arranged so that one end side thereof is the working axis of the tensor. It is a pivot lever member pivotally connected so as to be pivotable and having a yarn guide hole on the other end side.

Furthermore, in the present invention, the invention according to claim 3 is the tension adjusting device for the core yarn in the core yarn manufacturing apparatus according to claim 2, wherein the rotating lever member is selectively set at a plurality of angular positions. It consists of what can be positioned.

Furthermore, in the present invention, the invention described in claim 4 is the tension adjusting device for the core yarn in the core yarn manufacturing apparatus according to any one of claims 1 to 3, wherein the tensor is a machine base to which the tensor is attached. On the other hand, the tensor is connected through a connecting arm means so that the tensor can be moved from the tensor operating position to the operator's working position.

According to the tension adjusting device for the core yarn in the core yarn manufacturing apparatus according to the present invention, the tensioner including the upstream yarn guide and the downstream yarn guide is provided on the core yarn supply line, and the upstream yarn guide and the downstream with respect to the tensor are provided. The yarn guide position changing means for changing the position of at least one of the side yarn guides is provided, and the winding angle of the core yarn with respect to the tensor can be changed, so that the tension of the core yarn being spun can be changed. Can be fine-tuned by adjusting the total amount (number) of yarns and the adjustment of the bending angle of the yarn path, and the tension at the time of piecing when the weight is released is adjusted by adjusting the bending angle of the yarn path It is extremely effective in that adjustment is possible.

Hereinafter, the tension adjusting device for the core yarn in the core yarn manufacturing apparatus according to the present invention will be described in detail based on a specific example in which the filament yarn is used as the core yarn. Note that the present invention can also be applied to the case where the core yarn is a spun yarn. FIG. 1 is a schematic side view showing an overall configuration of a core yarn manufacturing apparatus to which a core yarn tension adjusting apparatus according to the present invention is applied. As shown in FIG. 1, the core yarn manufacturing apparatus 1 is configured by providing a filament yarn supplying device 3 as a core yarn in a spinning unit 2 of a plurality of spinning devices arranged in parallel. The spinning unit 2 is provided with a draft device 5 for drafting a sliver S supplied from a sliver ken (not shown) into a fiber bundle 4 having a predetermined thickness.

An example draft device 5 includes two back rollers 6 and 7 each composed of a pair of rollers, a middle roller 8 having an apron 8a, and a front roller 9 arranged in this order from the sliver S side. A trumpet guide 10 for introducing the sliver S is provided on the upstream side of the roller 6, and the sliver S is stretched to a predetermined thickness while the sliver S passes through the rollers 6, 7, 8, 9. Y becomes Y. An air spinning nozzle 11 is provided on the downstream side of the front roller 9 in the draft device 5 for twisting the drafted fiber bundle 4 by applying a swirling air flow.

The filament yarn F supplied from the yarn supply package 12 is supplied to the draft device 5 from the front roller 9 and the middle roller 8 having the apron 8a to the fiber bundle 4 drafted by the draft device 5. A filament yarn supply device 3 is provided. The filament yarn supply device 3 includes a feed nozzle 13 that sends out the filament yarn F by compressed air flow. Yarn guide tubes 14 and 15 are connected to the suction side and the discharge side of the feed nozzle 13, A hook-shaped guide 16 for guiding the filament yarn F from between the front roller 9 and the middle roller 8 onto the fiber bundle 4 is attached to the yarn introduction tube 15.

In the present invention, on the upstream side of the yarn introduction pipe 14 on the suction side, a tension adjusting device 20 is provided on the supply line of the filament yarn F to apply tension to the filament yarn F and adjust the tension. is there. Specifically, the tension adjusting device 20 includes a tensor 21 as shown in FIGS. The tensor 21 includes an upstream yarn guide 22 having a yarn guide hole 22a on the upstream side thereof, and a downstream yarn guide 23 having a yarn guide hole 23a on the downstream side thereof. 1 to 4, an arrow Ya indicates a feeding direction of the filament yarn F.

The tensor 21 in the tension adjusting device 20 includes a basic frame 24. A U-shaped rod member 25 is provided at a substantially middle portion between the upstream yarn guide 22 and the downstream yarn guide 23 with respect to the basic frame 24. The U-shaped rod member 25 has leg portions 25 a and 25 b, and the leg end portions are fixed to the base frame 24. A cylinder member 26 is attached to the lower surface side of the basic frame 24.

One leg portion 25a of the U-shaped rod member 25 constitutes the action axis Ax of the tensor 21, and a dish-shaped lower tensor member 27 is fitted to the leg portion 25a. A dish-shaped upper tensor member 28 is fitted on the lower tensor member 27 so as to be movable up and down, and a ring-shaped disc weight 29 is laminated on the upper tensor member 28. The filament yarn F is sandwiched between the lower tensor member 27 and the upper tensor member 28, and a desired tension is applied to the filament yarn F.

In the embodiment shown in FIGS. 2 to 5, the ring-shaped disk weight 29 is attached to the lower tensor member 27 via the upper tensor member 28 in order to release the tension on the filament yarn F at the time of yarn splicing. A tension release mechanism 30 for lifting is provided. The tension release mechanism 30 includes an elevating plate member 31, and the elevating plate member 31 is mounted on the U-shaped rod member 25 so as to be guided so as to be moved up and down. Has been passed. The elevating plate member 31 is fixed to the output end 26 a of the cylinder member 26. With this configuration, when the cylinder member 26 projects, the ring-shaped disc weight 29 is lifted via the elevating plate member 31 and the upper tensor member 28 to release the tension on the filament yarn F.

In the embodiment shown in FIGS. 2 to 5, the U-shaped rod member 25 is attached with a switching support member 32 for switching and supporting the amount of the ring-shaped disk weight 29. One end 32 a of the switching support member 32 is rotatably connected to the other leg portion 25 b of the U-shaped rod member 25, and the other end 32 b is one of the U-shaped rod members 25. As shown in FIG. 5, the ring-shaped disc weight 29 is adjusted and supported so as to be detachably engaged with the leg portion 25a.

Further, in the present invention, a yarn guide position changing means 33 for changing the position of at least one of the upstream yarn guide 22 and the downstream yarn guide 23 with respect to the foundation frame 24 is provided. In the embodiment shown in FIGS. 2 to 5, the upstream yarn guide 22 is formed integrally with the foundation frame 24, and the downstream yarn guide 23 is interposed via the yarn guide position changing means 33. The base frame 24 is pivotally attached.

The yarn guide position changing means 33 includes a rotating lever member 34. One end side 34a of the rotating lever member 34 is pivotally connected so as to be rotatable with respect to the action axis Ax of the tensor 21, and a downstream yarn guide hole 23a is formed on the other end side 34b. It is made up of what is provided.

The yarn guide position changing means 33 includes, for example, one boss 34c provided on the rotating lever member 34 side and a plurality of lock holes 35 provided on the base frame 24 side. By fitting the boss 34c on the lever member 34 side into one of the lock holes 35, the rotating lever member 34 can be selectively positioned and fixed at a desired angular position. As a result, the position of the downstream yarn guide hole 23a provided in the rotating lever member 34 is displaced, the bending angle of the core yarn F is changed, and tension adjustment to the core yarn F is performed.

In the present invention, as shown in FIG. 3, the rotating lever member 34 is attached to one leg portion 25a of the U-shaped rod member 25 (for the L base), and the U-shape. Attached to the other leg 25b of the rod member 25 (for the R base), the same parts can be used. In the former case, the lock hole 35 is constituted by a lock hole row 35L, and in the latter case, the lock hole 35 is constituted by a lock hole row 35R.

As shown in FIG. 3, when the rotating lever member 34 is positioned and set on the Ta side of the lock hole row 35L, the bending angle of the yarn path is reduced and the tension on the core yarn F is lowered. When the rotating lever member 34 is positioned and set on the Tn side of the lock hole row 35L, the bending angle of the yarn path increases and the tension on the core yarn F increases.

The tension load state during normal spinning and the tension load state during yarn splicing will be described using the tension adjusting device for core yarn according to the present invention. FIG. 6 is a tension diagram during spinning and yarn splicing. During normal spinning, a tension of a selected amount (number) of disk weights 29 is applied. By the operation, the disk weight 29 is lifted, and the load by the disk weight 29 is released. Incidentally, according to FIG. 6, Tmax [1] during spinning indicates a load state in which the tension is the largest due to the amount of the disk weight 29 and the bending angle of the yarn path, and the amount of the disk weight 29 It is shown that the tension can be finely adjusted in increments of Tmax [2] and Tmax [3] by setting the bending angle of the yarn path. On the other hand, since the disk weight 29 is lifted and the load by the disk weight 29 is released during yarn joining, the rotation lever member 34 is set to the Ta side only by setting the bending angle of the yarn path. It is shown that the tension can be finely adjusted by setting it in small increments with the Tn side.

That is, in the tension adjusting device for the core yarn according to the present invention, the tension during normal spinning is set as the sum of the amount of the disc weight 29 and the bending angle of the yarn path, and the tension during yarn splicing is the disc weight. Since 29 is lifted and the load is released, the load tension is based only on the bending angle of the yarn path. Therefore, in the tension adjusting device for the core yarn according to the present invention, the tension of the core yarn can be finely adjusted by setting the amount (number) of the disk weights 29 and setting the bending angle of the yarn path. In addition, it is extremely effective as a tension adjusting device that requires fine adjustment depending on the yarn type.

Further, in the present invention, a passage forming member 36 for preventing the filament yarn F from being wound around can be provided outside the upstream yarn guide 22.

Further, in the present invention, as shown in FIGS. 7 and 8, the tencer 21 can be moved downward from the tensor operating position P1 (see FIG. 7) to the work position P2 (see FIG. 8) by the operator. It is configured. In this case, the tensor 21 is rotatably connected to the machine base 37 to which the tensor is attached via the connecting arm means 38, and is directed from the tensor operating position P1 to the operator working position P2 by the operation of the operator. It can be moved.

FIG. 1 is a schematic side view showing an overall configuration of a core yarn manufacturing apparatus to which a core yarn tension adjusting apparatus according to the present invention is applied. FIG. 2 is a schematic perspective view showing a specific embodiment of the tension adjusting device for the core yarn according to the present invention. FIG. 3 is a schematic plan view thereof. FIG. 4 is a schematic front view partially shown in cross section. FIG. 5 is a schematic side view thereof. FIG. 6 is a tension diagram during spinning and yarn splicing. FIG. 7 is a schematic perspective view showing a state in which the tensor is set at the tensor operating position P1. FIG. 8 is a schematic perspective view showing a state in which the tensor is pulled down and moved to the tensor work position P2. FIG. 9A is a schematic plan view showing a conventional tensor, and FIG. 9B is a schematic front view thereof.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core yarn manufacturing apparatus 2 Spinning unit 3 Filament yarn supply apparatus 4 Fiber bundle S Sliver 5 Draft apparatus 6, 7 Back roller 8 Middle roller 8a Apron 9 Front roller 10 Trumpet guide 11 Pneumatic spinning nozzle 12 Feeding package 13 Feed nozzle F Filament yarn 14 Suction-side yarn introduction tube 15 Discharge-side yarn introduction tube 16 Saddle-shaped guide 20 Tension adjuster 21 Tensor 22 Upstream yarn guide 22a Yarn guide hole 23 Downstream yarn guide 23a Yarn guide hole 24 Base frame 25 U-shape U-shaped rod member legs 26 Cylinder member 26a Cylinder output end Ax Tensor action axis 27 Dish-shaped lower tensor member 28 Dish-shaped upper tensor member 29 Ring-shaped disc weight 30 Tensho Release mechanism 31 Lifting plate member 32 Switching support member 32a Switching support member end 32b Switching support member other end 33 Yarn guide position changing means 34 Rotating lever member 34a Rotating lever member one end 34b Rotating lever member other end 35 Lock hole 35L, 35R Lock hole row 36 Passage forming member P1 Tensor operating position P2 Working position by operator 37 Machine base 38 Connecting arm means

Claims (4)

In a core yarn manufacturing apparatus for manufacturing a core yarn from a fiber bundle and a core yarn by supplying a core air to the drafted fiber bundle and causing a swirling air flow to act on the upstream yarn on the core yarn supply line A tensor having a guide and a downstream yarn guide, and comprising a yarn guide position changing means for changing the position of at least one of the upstream yarn guide and the downstream yarn guide with respect to the tensor, A core yarn tension adjusting device in a core yarn manufacturing device, wherein the winding angle of the yarn can be changed. 2. The yarn guide position changing means comprises a rotating lever member having one end pivotally connected to a working axis of a tensor so as to be rotatable and a yarn guide hole provided on the other end. The core yarn tension adjusting device in the core yarn manufacturing device described above. 3. The core yarn tension adjusting device according to claim 2, wherein the rotating lever member can be selectively positioned at a plurality of angular positions. The tensor is rotatably connected to a machine base to which the tensor is attached via a connecting arm means, and the tensor can be moved from a tensor operating position to an operator working position. The core yarn tension adjusting device in the core yarn manufacturing device according to any one of claims 1 to 3.

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