JPH07196250A - Thread guarding method for hand spun silk yarn winder - Google Patents

Abstract

PURPOSE:To provide the thread guarding method 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 a high success rate. CONSTITUTION:This is a thread guarding method in a hand spun silk yarn winder which is protrusively provided with bobbin holders 15, 16 at a winding position (a) and a stand-by position (b) so as to be changeable, and has a thread delivering device 20 to advance between both the bobbin holders 15, 16, and a suction gun 27 is used to coil the thread round the bobbin holder 16 at the stand-by position (b) for winding the thread, and the thread is delivered from the bobbin holder 16 at the stand-by position (b) to the bobbin holder 15 at the winding position (a) by the thread delivering device 20 to make thread guarding, and winding and automatic changing over in the state of increased thread tensile force can be carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding method in a spinning winder that winds continuously fed yarn around a large number of bobbins.

[0002]

2. Description of the Related Art First, the basic structure of a take-up winder to which a yarn hooking method at 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 1 is
6 is located at the standby position (b). The turret plate 2 is 180 when the bobbin B at the winding position (a) is full of the yarn Y.
The bobbin holders 15 and 16 are rotated once to switch the positions of the bobbin holders 15 and 16 to switch the yarn Y from the full bobbin B to the empty bobbin B newly located at the winding position (a), and the winding is continued.
3 and 4 show the state when 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.

A conventional example of such a conventional thread hook 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 freely swingable as shown in the drawing. Na threading guide 40
Is provided, and the thread hooking guide 40 has a guide 40A, and can be deployed in the axial direction from the front position as illustrated. Then, the yarn sucked by the suction gun 27 is hung on the guide 40A with the guide 40A in the front. Then, the guide 40A is expanded to a position corresponding to the slit 17 of the bobbin B, and the thread hooking guide 40 is moved to the bobbin B.
When swinging toward, each yarn Y is caught by the slit 17 and wound on the bobbin B. At the same time, the thread removing guide 28 is returned to its original position, and each thread Y is moved to the traverse guide 6
And the twill winding is started. The thread guide 40
Usually, the thread hooking guide having A unfoldable and the push-in guide for pushing the thread into the slit of the bobbin are provided separately.

[0009]

According to the above-described thread hooking, a thread that is weakly sucked by the suction gun is threaded, so that the success rate of thread hooking depends largely on the thread tension applied by the suction gun. . 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. The present invention intends to provide a yarn winding method for a spinning winder.

[0011]

SUMMARY OF THE INVENTION A yarn winding method of a spinning winder which solves the above-mentioned problems is provided by a bobbin holder at a winding position and a standby position, which is switchably protruded, and a bobbin holder which advances between both bobbin holders. A method of threading in a spinning winder that has a method of causing a bobbin holder at a standby position to wind a thread, and threading the thread from the bobbin holder at a standby position to a bobbin holder at a winding position by the thread transfer device. Is. It is preferable that the yarn transfer device and the guide member are switched to move to the yarn transfer.

[0012]

[Function] Once the bobbin holder at the standby position is wound with the thread tension increased, the bobbin holder at the standby position is wound around the bobbin holder, and the bobbin holder at the standby position is switched to the bobbin holder at the winding position by automatic switching by the thread passing device. Hand over and finish threading at the start. When the yarn transfer device and the guide member are switched to transfer the yarn, the yarn transfer device may be kept in the predetermined position while causing interference with the winding position bobbin holder when winding the bobbin holder at the standby position.

[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 method of the present invention, and FIG. 2 is a procedure diagram of the thread hooking method.

First, a device configuration for threading will be described. The bobbin holder 15 at the winding position (a) and the bobbin holder 16 at the standby position (b) that 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. The configuration is the same as that described in FIG. The added device is that the yarn hooking device 20 is provided with a guide plate 31 that can be moved back and forth by a pneumatic cylinder 32. This guide plate 3
When 1 advances, slide guide 21 and fixed guide 22
The yarn is pushed out to a position away from and the yarn is separated from the surface of the bobbin B inserted into the bobbin holder 15 at the winding position (a). 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.

Next, the thread hooking procedure 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. Further, the yarn passing device 20 has advanced to the illustrated position, and the guide plate 32 has also advanced to the illustrated position.

In this state, the thread sucked by the suction gun 27 is passed 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 and transfers. In this process, the bobbin holder 16 is also rotating at high speed,
The thread tension does not decrease.

As shown in FIG. 2A, the yarn wound on 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 in 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 the regular winding is started. To be done. With this automatic switching, the thread tension is maintained and the thread does not loosen. The yarn passing operation performed by the yarn passing device 20 is as shown in FIG.
It can also be carried out immediately after the state of (b) is rolled.

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, the bobbin holder 16
It is not necessary to insert a regular bobbin B into the
It is also possible to insert ~ 2 long substitute bobbins.

[0020]

The yarn hooking method of the spinning winder of the present invention is such that the bobbin holder at the standby position is wound with the yarn tension raised,
Since the thread is transferred from the bobbin holder in the standby position to the bobbin holder in the winding position by automatic switching by the thread transfer device, the tension does not become insufficient during threading. The threading success rate is increased and high-speed winding threading is possible. Further, this is a yarn hooking method that can be performed by utilizing the equipment that the conventional spin winding machine has, and the cost increase for that is minimized.

[Brief description of drawings]

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

FIG. 2 is a procedure diagram of a thread hooking method.

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

FIG. 4 is a side view of the take-up winder to which the yarn hooking method 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 threading method.

[Explanation of symbols]

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

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[Procedure amendment]

[Submission date] August 5, 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 (2)

[Claims] 1. A yarn hooking method in a take-up winder, comprising bobbin holders at a take-up position and a standby position, which are switchably projected, and having a yarn passing device which advances between both bobbin holders.
A yarn winding method for a take-up winder, characterized in that the yarn is wound around a bobbin holder at a standby position, and the yarn is hooked from the bobbin holder at the standby position to the bobbin holder at a winding position by the yarn transfer device. 2. A yarn hooking method in a take-up winder, comprising bobbin holders at a winding position and a standby position so as to be switchable, and having a yarn passing device that advances between both bobbin holders.
The bobbin holder at the standby position winds the thread, the guide member for preventing the thread from coming into contact with the bobbin holder at the winding position is projected, and the guide member is withdrawn, and the bobbin holder at the standby position moves to the bobbin holder at the winding position. A yarn hooking method for a take-up winder, wherein the yarn is hooked by passing the yarn by the yarn passing device.