JPH07196251A - Thread guarding device for hand spun silk yarn winder - Google Patents

Abstract

PURPOSE:To provide a thread guarding device for a hand spun silk yarn winder which makes strong thread tensile force act on a thread during thread guarding to facilitate the thread guarding having high success rate. CONSTITUTION:This is a hand spun silk yarn winder which is changeably protrusively provided with bobbin holders 15, 16 at a winding position (a) and a stand-by position (b), and has a thread delivering device 20 to advance between both the bobbin holders 15, 16, and a guide member 32 which pushes out the thread from an ordinary thread delivering position set by the thread delivering device 20 and is movable back and forth is provided in common with or independently of the thread delivering device 20. The guide member 32 is desirable from the point of view that the thread leaving after a point of time when thread tensile force acts on the thread after pushing out it at an advance position carrys out thread guarding under the high thread tensile force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn hooking device at the start of a spinning winder that winds continuously supplied yarn around a large number of bobbins.

[0002]

2. Description of the Related Art First, a basic structure of a take-up winder to which a yarn hooking device at a start is applied will be described with reference to a front view of FIG. 3 and a side view of FIG. The main body frame 7 is provided with a vertically movable elevator box 1, a rotatable turret plate 2, and a fixed frame 18 having an operation box 10 at its tip.

The elevator box 1 has a touch roller 3,
The traverse device 4 and the yarn pulling guide 5 are respectively supported, and the touch roller 3 is constantly in pressure contact with the yarn layer of the bobbin B at the winding position, which will be described later.
It is rotating counterclockwise. Further, the traverse device 4 is provided with a traverse guide 6, and the traverse guide 6 engages with the yarn Y and travels in the traverse range to traverse the yarn Y. Further, when the positions of the full bobbin B and the empty bobbin B are switched upstream of the traverse device 4, the yarn Y and the traverse guide 6 are disengaged and the yarn Y is moved outside the traverse range. A thread shifting guide 5 is provided. As shown in FIG. 4, the yarn pulling guides 5 are provided on a plate 9 that slides along a guide rod 8 (two in the figure, which corresponds to the number of bobbins). The cylinder 11 is fixed to the piston rod 12.
Operation causes the thread pulling guide 5 to move to the position indicated by the two-dot chain line 13 in FIG.
Move up to.

The turret plate 2 can be rotated around a rotary shaft 14 by a rotation drive device (not shown), and two bobbin holders 15 and 16 are rotatably supported by the turret plate 2, respectively. Each bobbin holder 15,
Several bobbins B each having a slit 17 formed at one end (two in the figure) are inserted into the bobbin 16, and one bobbin holder 15 is at the winding position a and the other bobbin holder 16 is
Is located at the standby position b. The turret plate 2 rotates 180 degrees when the yarn Y is fully wound on the bobbin B at the winding position a, and switches the positions of the bobbin holders 15 and 16 to the empty position newly located at the winding position a. The yarn Y from the fully wound bobbin B is switched to the bobbin B, and the winding is continued. 3 and 4 show the state in which the yarn Y is switched, so that the bobbin B with full winding is supported by the bobbin holder 17 at the standby position b.

The fixed frame 18 is provided so as to project from the main body frame 7 at a position where it does not interfere with the lifting and lowering of the lifting box 1, that is, a position diagonally above the turret plate 2 and parallel to the lifting box 1. The operation box 10 is provided at the tip of the fixed frame 18.
Is provided, and the inside of the fixed frame 18 is hollow except for the wiring passage portion. Slide arm 30 in this cavity
Is installed so that it can move back and forth from the storage position of the two-dot chain line to the advance position of the solid line. The yarn passing device 20 is attached to the tip of the slide arm 30. The yarn passing device 20 has a structure in which a slide guide 21 and a fixed guide 22 are arranged vertically. As shown in FIG. 5, the slide guide 21 has a number of claws 23 corresponding to the bobbins B, and
It is possible to slide to the position of the chain double-dashed line by 4. Normally, the spring 25 is located at a fixed position in the right direction, but at the time of operation of FIG. 3, it is pushed by a cylinder 26 provided on the turret plate 2 side to become a fixed position in the left direction, and the upstream yarn pulling guide 5
The yarn Y is captured by the slit 17 in cooperation with the rewinding and cutting. As shown in FIG. 5, the fixed guide 22 has a claw 27 that faces the claw 23, and in the operating position of FIG. 3, the yarn path is regulated so that the yarn Y does not fall from the fully wound bobbin B. . In this way, the slide guide 21 and the fixed guide 22 of the yarn passing device 20 operate so that the yarn path to the full-winding bobbin B is not displaced and the yarn Y is caught in the slit 17.

In the above-described spinning winder, one of the two bobbin holders is set to the winding position and the other is set to the standby position to wind the yarn on the bobbin located at the winding position.
Each time the bobbin is fully wound, the turret plate is rotated 180 degrees, and the yarn is passed to the empty bobbin that has newly arrived at the winding position. In this way, the yarns that are continuously supplied are alternately wound by the two bobbin holders.

By the way, in this turret-type spinning winder, the yarn transfer from the full bobbin to the empty bobbin can be automatically performed in a continuous operation, but at the start, the empty bobbin is manually operated. It is necessary to hang the thread. Therefore, a thread hooking device is provided.

A conventional example of such a conventional yarn hooking device will be described with reference to FIG. Each yarn Y fed out through the traverse guide 26 passes between the touch roller 3 and the traverse device 5 (the yarn removing guide 28 is in the yarn removing position as shown in the drawing), and is swingable as shown in the drawing. A thread hooking guide 40 is provided, the thread hooking guide 40 has a guide 40A, and a thread hooking device that is axially deployable from a front position as shown in the drawing is provided. Then, the yarn sucked by the suction gun 27 is hung on the guide 40A with the guide 40A in the front. And guide 4
When 0A is deployed to a position corresponding to the slit 17 of the bobbin B and the yarn hooking guide 40 swings toward the bobbin B, each yarn Y is caught by the slit 17 and wound on the bobbin B. At the same time, the yarn removing guide 28 is returned to the original position, each yarn Y is engaged with the traverse guide 6, and the traverse winding is started. In some cases, the thread hooking guide having the thread guide 40A and the push-in guide for pushing the thread into the slit of the bobbin are provided separately.

[0009]

According to the yarn hooking device described above, the yarn that is weakly sucked by the suction gun is hooked, and therefore the success rate of the yarn hooking depends on the yarn tension applied by the suction gun. large. If the thread tension is low, the thread will be loosened during threading and will wind around the godet roller on the upstream side. Therefore, if an attempt is made to increase the suction force of the suction gun, an enormous amount of air is required, and there is a problem in that the yarn tension as large as that during normal automatic switching cannot be obtained. The success rate of this thread hooking decreases as the winding speed increases, and one failure requires pulling the thread from the upstream side, resulting in a loss time of 5 to 10 minutes. In particular, when the bobbin holder at the winding position is reversely rotated, looseness of the thread tension is likely to occur during threading. Therefore, although threading is performed by low-speed winding and then transitioning to high-speed winding, the thread up to high-speed winding becomes waste thread.

The present invention has been made in view of the above problems of the prior art. The object of the present invention is to apply a large thread tension during threading and to achieve threading with a high success rate. An object of the present invention is to provide a yarn hooking device for a spin winder.

[0011]

A yarn hooking device for a spinning winder which solves the above-mentioned problems is provided with a yarn passing device in which bobbin holders at a winding position and a standby position are switchably projecting, and the bobbin holders advance between both bobbin holders. The yarn winding machine has a guide member that pushes and retracts a yarn from a normal yarn delivery position of the yarn delivery device, which is also used or independent of the yarn delivery device. It is preferable that the guide member is a member that withdraws after the yarn tension is applied after the yarn is pushed out at the advance position.

[0012]

When the guide member is advanced and the yarn is pushed out, the yarn is released from the yarn passing device, and the bobbin holder at the standby position is wound with increased yarn tension. Then, when the guide member retracts, the yarn delivery device delivers the yarn from the bobbin holder at the standby position to the bobbin holder at the winding position.
If the withdrawal of the guide member is performed automatically or manually by detecting the thread tension, the thread will not be hooked when the thread tension is insufficient.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a thread hooking device of the present invention, and FIG. 2 is a procedure diagram of thread hooking by the thread hooking device.

First, the yarn hooking device will be described. The bobbin holder 15 at the winding position a and the bobbin holder 16 at the standby position b, which are in rolling contact with the touch roller 3, can be switched by a turret plate, and the thread hooking device 20 can be moved back and forth between the bobbin holders 15 and 16. This is the same as that described in FIG. As an added device, a guide plate 31 is provided on the yarn hooking device 20 so as to be movable back and forth by a pneumatic cylinder 32. When the guide plate 31 advances, the yarn is pushed out to a position apart from the slide guide 21 and the fixed guide 22, and the yarn comes to be separated from the surface of the bobbin B inserted into the bobbin holder 15 at the winding position a. There is. The guide plate 32 is a rectangular plate so that the thread can easily slide sideways at the tip, but the fixed guide 22 may also be used so that the fixed guide 22 can move forward and backward. Further, a guide plate independent of the yarn passing device 20 may be used.

The guide plate 32 may be withdrawn automatically by detecting the yarn tension.
For example, the force applied to the guide plate 32 may be detected by a strain gauge or the like, and when a predetermined yarn tension is reached, the yarn removing guide 28 may be automatically or manually retracted, and at the same time, the yarn removing guide 28 may be operated in conjunction with the original retracted position. it can. With such a configuration, the yarn hooking, that is, the yarn passing is performed with a sufficient yarn tension secured, and the failure rate is surely reduced.

Next, a thread hooking procedure by this thread hooking device will be described. In FIG. 1, the yarn removing guide 28 jumps up to the position shown in the drawing, and the yarn comes off the traverse guide 6 of the traverse device 4. In addition, the yarn passing device 20
Has advanced to the position shown in the figure, and the guide plate 32
Has also advanced to the position shown.

In this state, the thread sucked by the suction gun 27 is passed through as shown by the solid line and wound around the bobbin holder 16 at the standby position b which rotates at high speed several times. Then, the thread is wound around the bobbin holder 16. In this process, the bobbin holder 16 also rotates at a high speed, so that the thread tension does not decrease.

As shown in FIG. 2 (a), the yarn wound around the bobbin holder 16 tries to become a natural yarn path from above, and therefore moves in the direction of the arrow 33. Therefore, it is wound around the bobbin holder 16 and immediately after it becomes independent of the suction gun 27, a rod winding state as shown in FIG.

When the yarn removing guide 28 shown in FIG. 1 returns to its original retracted position and the guide plate 32 of the yarn passing device 20 retracts, the yarn becomes a two-dot chain line. Then, the traverse guide 6 of the traverse device 4 is engaged with the traverse guide 6 shown in FIG.
The wound state is as shown in (c). Then, when the automatic switching described with reference to FIGS. 3 to 5 is performed, the yarn is transferred from the bobbin holder 16 at the standby position b to the bobbin holder 15 at the winding position a, and regular winding is started. With this automatic switching, the thread tension is maintained and the thread does not loosen.
The yarn passing by the yarn passing device 20 can be performed immediately from the wound state of FIG. 2 (b).

Since a small amount of waste thread remains on the bobbin holder 16 at the standby position b, the bobbin B inserted into the bobbin holder 16 is replaced. Therefore, it is not necessary to put the regular bobbin B in the bobbin holder 16, and
You may make it insert two long substitute bobbins.

[0021]

The yarn hooking device of the spinning winder according to the present invention is provided with a guide member that can push the yarn forward and backward from the normal yarn passing position by the yarn passing device to increase the yarn tension to the bobbin holder at the standby position. Since the yarn can be wound and connected by automatic switching by the yarn passing device, the tension is not insufficient in the yarn hooking, the success rate of the yarn hooking is increased, and the yarn hooking for high-speed winding is also possible. Further, by utilizing the equipment of the conventional spinning winder and adding a guide member that can move back and forth, it is possible to carry out threading with a high probability and minimize the cost increase.

[Brief description of drawings]

FIG. 1 is a front view showing a yarn hooking device of the present invention.

FIG. 2 is a procedure diagram of a yarn hooking method using the yarn hooking device of the present invention.

FIG. 3 is a front view of a take-up winder to which the yarn hooking device is applied.

FIG. 4 is a side view of a spinning winder to which the yarn hooking device is applied.

FIG. 5 is a diagram showing a main part of a yarn passing device.

FIG. 6 is a perspective view showing a conventional yarn hooking device.

[Explanation of symbols]

 15, 16 Bobbin holder 20 Thread passing device 27 Suction gun 32 Guide plate (guide member) 33 Pneumatic cylinder (advancing and retracting mechanism)

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[Procedure amendment]

[Submission date] October 18, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (4)

[Claims] 1. A spinning winder having a yarn delivery device in which bobbin holders at a winding position and a standby position are switchably projected, and which advances between the bobbin holders, wherein a normal yarn delivery position by the yarn delivery device is provided. A yarn hooking device for a take-up winder, which is provided with a guide member that pushes and pulls a yarn out of a reel. 2. The yarn hooking device for a take-up winder according to claim 1, wherein the guide member withdraws after the yarn tension is applied after the yarn is pushed out at the advanced position. 3. The yarn hooking device for a take-up winder according to claim 1, wherein the guide member is attached to the yarn passing device. 4. The yarn hooking device for a take-up winder according to claim 1, wherein the guide member is provided independently of the yarn passing device.