JPH0151430B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to a turret type (revolving type) automatic winding machine used for winding high-speed yarn, particularly synthetic fiber yarn, in high-speed spinning or direct spinning/drawing processes. Concerning how to thread.

Prior Art In recent years, turret-type automatic winding machines that automatically switch the yarn wound onto a bobbin have been increasingly adopted in the melt-spinning and winding process of synthetic fibers from the viewpoint of automation, labor saving, and speeding up. I'm getting old. Such a winding machine is disclosed in Japanese Patent Publication No. 57-25466 and Japanese Patent Publication No. 57-25466.
As shown in Japanese Patent Publication No. 36233 and Japanese Patent Publication No. 57-49462, various improvements have been made and it has come into practical use, but recently it has become more and more practical.
New problems have also arisen when winding at high speeds exceeding 1 minute.

In the first threading process, that is, at the start of melt spinning or when cutting the thread, the spun yarn is first taken up by a suction device such as a suction gun, and in this state, it is manually or semi-automatically threaded onto the winding machine. However, this is a problem that occurs when threading for the first time. The automatic (switching) winding machine described above automatically switches the yarn when a predetermined winding amount is reached under normal operating conditions, and can also switch the yarn automatically at any time by pressing a button. can be done smoothly. However, since the initial threading had to be done manually, new problems arose in terms of safety, threading success rate, etc. at the above-mentioned high speeds. The conventional threading method and its problems will be explained below regarding a spindle drive type turret winding machine. FIGS. 5 and 6 are simplified operation explanatory diagrams for explaining the conventional threading method. To perform the first threading (initial threading) in Fig. 5,
First, when the operation button attached to the machine base is pressed, the turret 3 starts rotating in the direction of arrow b, and stops when the bobbin holder (spindle) 1 comes into contact with the contact roller (touch roller) 7. Thereafter, the bobbin holder 1 and the traverse guide 9 are started, and the bobbin holder 1 rotates to frictionally drive the contact roller 7 that is in contact with it, and the traverse guide 9 performs a traverse motion in the left-right direction. Next, the threading guide 14 located on the side of the turret 3 is rotated and moved to the center of the turret. At this time, the yarn removal guide (plate) 11 located above the traverse guide 9 has already rotated and moved to a position where the yarn Y is removed from the traverse guide 9. When such a state is reached, the operator passes the yarn Y to be threaded, which is taken up by the suction gun 18, from the thread removal guide 11 along the contact roller 7, passes it through the threading guide 14, and fixes the thread guide. . After that, by pressing the operation button, the turret 3 is restarted and the bobbin holder 1 is
When the thread Y is moved to the winding position and fixed as shown in FIG.
The yarn Y returns to its original position and is captured by the traverse guide 9, and thus the yarn Y is traversed and wound onto the bobbin. Further, the threading guide 14 returns to its original position.

Initial threading is performed in this way, but when the winding is performed at a high speed as described above, the rotation of the bobbin holder 1 is extremely large, and the bobbin inserted therein comes into contact with the contact roller 7, causing friction on the contact roller 7. When driving, a very large force is applied in an unbalanced manner, and the problem often occurs that the bobbin (especially when using a paper tube) breaks and scatters around until threading is completed. It was impossible to predict when such troubles would occur during threading, and this became a major safety problem. In particular, one bobbin holder has several (usually two)
In the case of a multi-spring system in which up to 4 bobbins are inserted, it is especially dangerous because it takes a considerable amount of time to thread the thread one by one through the thread guide while the suction gun is suctioning the thread. big.

Additionally, during the above-mentioned threading operation, the thread being suctioned by the suction gun runs in contact with the contact roller rotating at high speed, so the thread is often caught by this and winds and threading fails. The problem was that the success rate of bets was not high enough.

Object and Structure of the Invention The present invention proposes an initial threading method that solves these problems, improves safety during threading, and has a high threading success rate. In order to achieve this object, the present invention has the following configuration.

That is, the present invention includes a rotatable turret in which a plurality of bobbin holders are horizontally protruded at regular intervals, a rotating roller that is placed above the bobbin holder and comes into contact with the bobbin holder during winding, and a traverse guide that faces the rotating roller. , a thread removing guide located above the traverse guide and moving toward the rotating roller to remove the thread from the traverse guide; a thread threading guide located on the side of the turret and rotating toward the center of the turret; When a predetermined amount of yarn is wound onto a bobbin holder, the turret rotates and the yarn is automatically switched to the next bobbin holder.When threading the yarn for the first time on the turret type winding machine, the turret is rotated. The bobbin holder to be threaded is moved in a non-rotating state to a pre-threading position where it is in contact with or close to the stationary rotating roller, and the thread to be threaded, which is taken up by the suction device, is moved to the thread removal position. Rotate the thread guide to a position where the thread does not come in contact with the rotating roller when passed from the thread removal guide to the thread guide, rotate the bobbin holder and the rotating roller, and then move the thread guide to the bobbin holder where the thread should be threaded. A thread threading method for a turret type winding machine, which is characterized in that the thread is threaded by rotating the thread to the side and rotating the turret to a thread threading (winding) position so that the thread comes into contact with a bobbin or a bobbin holder. be.

Hereinafter, the present invention will be explained based on the drawings. FIG. 1 is a schematic perspective view of a spindle drive type turret winder suitable for carrying out the present invention. In the figure, numerals 1 and 2 indicate bobbin holders, into which a bobbin (four-piece type in this example) is fitted. The bobbin holders 1 and 2 are horizontally supported by a turret 3, and a spindle (not shown) that holds the turret is driven by a motor 4 and rotates clockwise as shown by the arrow in FIG. Switching is possible.

Bobbin holders 1 and 2 are supported at an interval of 180°,
The rear end is connected to motors 5 and 6, and the motors 5 and 6 are connected to each other.
By driving 6, the individual bobbin holders can be rotated counterclockwise as indicated by arrows in FIG.

A contact roller 7 is provided above the bobbin holder 1 (2) as a rotating roller that contacts the bobbin holder 1 (2) and is frictionally driven in a clockwise direction as shown in FIG. contact roller 7
is in contact with the bobbin holder (bobbin) during yarn winding and maintains the contact pressure at a predetermined level, or bobbin holder 1 (2)
It is surrounded by a cover 8 as shown in the figure. Further, a traverse box 1 has a traverse guide 9 that traverses the yarn substantially parallel to the position facing the contact roller 7.
0 is placed. This traverse box 1
0 is provided above the traverse guide 9 with a plate-shaped yarn removal guide 11 that pushes out the yarn gripped and traversed by the traverse guide 9 toward the contact roller 7 side and removes the yarn from the traverse guide 9, and is not shown in the drawings. The thread is removed by operating a fluid pressure cylinder and rotating the thread removal guide 11.

The contact roller 7 (cover 8) and the traverse box 10 are connected at their rear ends to a slide block 13 that is supported so as to be movable up and down along two upright shafts 12, so that the contact roller 7 (cover 8) and the traverse box 10 can move up and down in accordance with winding. It is being done.

14 is a threading guide provided parallel to the bobbin holder 1 (2) at a side position of the turret 3;
They are arranged in a rod-shaped holder 15 at intervals corresponding to the threading slits cut into the bobbin B. Further, the rod-shaped holder 15 is supported by an arm 17 connected to a rotary cylinder (actuator) 16.
6, the turret 3 is rotated from a side position to a position substantially in front of the center of the turret 3 to a position below the traverse box 10. This rotation end position is adjusted so that the straight line connecting the thread removal guide 11 at the thread removal position does not come into contact with the contact roller 7 during the threading operation.

Incidentally, the threading guide 14 may be provided to be extendable or retractable as shown in Japanese Patent Laid-Open No. 57-62171.

Next, regarding the initial threading to the winding machine, the second
This will be explained with reference to Figures 4 to 4.

The thread Y to be threaded is picked up by the operator using the suction gun 18 without contacting the winding machine, and in this state, when the operation button is pressed, the turret 3 is driven clockwise and the thread Y is taken up by the suction gun 18 without contacting the winding machine. At this position, the bobbin holder 1 to be threaded contacts the contact roller 7 and rotates until a predetermined contact pressure is applied, and then stops. Then, the traverse guide 9 is activated and starts reciprocating in the left and right direction. In this case, the bobbin holder 1 is not being driven, and therefore the contact roller 7 is also in a non-rotating state.

At the same time, the rotary cylinder 16 operates and the arm 1
7 turns in the direction of the arrow a in FIG. 2, and the threading guide 14 moves from the position indicated by the dashed line to the position indicated by the solid line passing between the bobbin holders 1 and 2 and below the traverse box 10 along the bobbin holder 1. On the other hand, the thread removal guide 11 has moved to the thread removal position as shown in FIG. 2 by this point.

In this state, operate the thread Y being sucked into the suction gun 18 to move the thread so that it passes through the thread removal guide and comes to the threading guide 14, and each threading guide 1
4 and fix the thread guide between them. As described above, this thread guide is located at a position where it does not come into contact with the contact roller 7 or the bobbin holder 1. Therefore, when the operator threads each thread Y through the threading guide 14 in such a state, the bobbin holder 1, contact roller 7, etc. are not rotating, so the bobbin B is safe and will not be damaged or scattered. I can work with care. After threading the thread through the threading guide 14 in this way, the operator
The suction gun 18, which suctions the thread through the threading guide 14, is placed in a place where it will not be a hindrance, such as on or near the stand of the winding machine, and the next operation button is pressed to retreat to a safe place. Note that this may be done by remote control. With this operation, the bobbin holder 1 is activated and rotates counterclockwise, and the contact roller 7 in contact with the bobbin holder 1 is frictionally driven clockwise to reach a predetermined rotation speed, for example, 6000 m/min or more in a very short time. In this case, when the bobbin holder 1 is configured to stop at a position close to the contact roller 7, the turret 3 may be rotated by a small amount of rotation and rotated when the bobbin holder 1 contacts the contact roller 7.
When the number of rotations of the bobbin holder 1 reaches a predetermined value and the timer times up (this may be confirmed by some means), the rotary cylinder 16 rotates in the opposite direction and the threading guide 14 rotates toward the center of the turret as shown in FIG. At the same time, the turret 3 is driven again and the bobbin holder 1 moves slightly below the traverse box 10 to the winding position as shown in FIG.
By this movement of the bobbin holder 1 and the threading guide 14, the thread Y is securely brought into contact with the bobbin holder 1 along its circumferential direction, and is bitten into the threading slit (groove) of the bobbin B and captured. It will be wound up by B. After this or at the same time, when the thread removal guide 11 is operated to return it to the position shown in FIG. 4, the thread Y is automatically gripped by the traverse guide 9 and wound while being traversed from side to side on the bobbin B. .

Note that the same procedure can be performed even when the threading guide is placed on the traverse box side. In this case, the rotation is a two-stage forward movement method.

Although the above example has been explained with respect to a spindle drive type, it goes without saying that the same applies to a friction drive type.

Effects Since the present invention has the above configuration, it has the following effects.

(1) Since the work of setting the thread on the threading guide is performed while the bobbin holder is not rotating, there is no chance of the bobbin scattering due to bobbin damage or poor gripping, and safety is extremely high.

(2) Since the yarn being sucked by the suction gun does not come into contact with the rotating (contact) roller during threading, the success rate of initial threading is significantly improved.

(3) By starting the bobbin holder after setting the yarn in the threading guide, the contact time between the (paper) bobbin and the (contact) roller is shortened, reducing the frequency of bobbin ruptures, etc.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view of a turret type winder suitable for carrying out the present invention, Figs. 2 to 4 are explanatory diagrams of the threading operation of the present invention, and Figs. 5 to 6 are illustrations of the conventional threading operation. It is an explanatory diagram. 1, 2...Bobbin holder, 3...Turret, 7...
Contact roller, 9...Traverse guide, 10
...Traverse box, 11...Thread removal guide, 1
4... Threading guide.

Claims (1)

[Claims] 1. A rotatable turret with a plurality of bobbin holders protruding horizontally at regular intervals, a rotating roller located above the bobbin holder and in contact with the bobbin holder during winding, a traverse guide facing the rotating roller, and the traverse guide. It has a thread removal guide located above and moves toward the rotating roller to remove the thread from the traverse guide, and a thread threading guide located on the side of the turret that rotates toward the center of the turret. When a thread is wound up, the turret rotates and the thread is automatically switched to the next bobbin holder. The thread removal guide moves the bobbin holder to be threaded in a non-rotating state to a pre-threading position where it comes into contact with or is close to the stationary rotating roller, and moves the thread to be threaded, which is taken up by the suction device, to the thread removal position. Turn the threading guide to a position where the thread does not come into contact with the rotating roller when passed through the threading guide, rotate the bobbin holder and the rotating roller, and then turn the threading guide to the side of the bobbin holder where the thread should be threaded. A thread threading method for a turret type winder, characterized in that the turret is rotated to a thread threading (winding) position and the thread is brought into contact with a bobbin or a bobbin holder to thread the thread.