JPS59217567A - String hooking method for automatic revolving winder - Google Patents

Abstract

PURPOSE:To catch many strings simultaneously by hooking a string over a hook guide along a path nearer to a contact roller side than a common tangent line while moving a hook guide toward the center of turret. CONSTITUTION:A string is hooked over a hook guide 44 along a path nearer to a contact roller 6 than a common tangent line between an auxiliary bobbin and the contact roller 6 positioned at the normal winding position then said guide 44 is moved toward the center of a turret 12 to simulate the path of string travelling from the contact roller 6 to the hook guide 44 by the string path between bobbins when exchanging them. Consequently when hooking a string over the hook 44, the string is never wound over the bobbin while the string can be wound reliably only through rotation of turret 12 immediately upon normal exchange, thereby many strings can be caught simultaneously.

Description

[Detailed Description of the Invention] [Technical Field] The present invention rotatably supports a plurality of yarn winding bobbins, and the yarn winding bobbins can be rotated to take a standby position and a normal winding position. The present invention relates to a method for initial thread winding of a revolving type automatic winder, which consists of a turret and a contact roller in contact with a thread take-up ribbin in a normal winding position, and is adapted to continuously wind thread.

(Problems with the Prior Art) Conventionally, when a revolving type automatic winder starts operating, the yarn is taken up by a suction means and threaded onto the bobbin, but there is a problem in that threading cannot be carried out smoothly.

In particular, there is a recent trend towards automatic winders having more spindles, and as the number of threads increases, this initial threading becomes even more difficult. For example, in the case of four-spindle picking, four threads must be caught by four separate bobbins at the same time. If there is a delay of a few seconds before a single thread is hung, the previously hung thread will be wound onto the bobbin, and the diameter of the package will rapidly increase. In the friction winder, the surface of the package with the increased diameter is driven by seven friction rollers. Further, in the spindle winding machine, each bobbin is driven by a spindle at a constant speed. In any case, since the rotational speed of the spindle on which each bobbin is attached is the same, the circumferential speed of the package is proportional to its diameter. Therefore, the surface speed of the bobbin that is caught late is slow, and once the thread is caught, its tension is reduced, resulting in the thread being wound around the friction roller or contact roller, and threading failure. I will do it. For this reason, it is necessary for a multi-spindle winder to catch a large number of yarns almost simultaneously.

In addition, from the viewpoint of workability in the subsequent process, it is necessary that the packaging for thread hooking is also provided with 1 to 1 to 1 lansfire coils (commonly known as pig tills).

[Purpose of the invention]

The present invention skillfully utilizes the automatic switching mechanism of automatic winding to carry out initial threading, and even a multi-spindle winder can catch a large number of threads almost simultaneously, and the threading can be carried out at the same time as the package of time. It is an object of the present invention to provide a threading method for a revolving type automatic winder which can also be provided with a transfer coil.

[Structure of the invention]

The present invention aims to achieve the above-mentioned object in a method of threading a thread in a revolving type automatic winder in which a turret 1 is rotated to continuously wind a thread. The yarn hooker hooks the yarn to the guide along a path closer to the contact roller than the common tangent line between the rollers, and later the yarn hooker moves the guide to the center side of the turret and threads the yarn from the contact roller. The path of the yarn traveling to the guide is approximated to the path of the thread passing between bobbins when switching bobbins, and then the turret is rotated by - to move the yarn winding revolving bobbin to the normal winding position, while the bobbin This is achieved by the threading method of a revolving automatic winder that threads the winder.

[Description of Embodiments] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing embodiments of the present invention.

FIG. 1 shows a perspective view of a spindle-driven double tandem type revolving automatic winder according to the present invention.

FIG. 2 shows a front view of FIG.

In FIG. 2, two slide shafts 2 extending vertically are fixed to a separate frame 1. A slide block 3 moves up and down along the slide shaft 2 by a slide bearing (not shown). The slide block 3 has a contact roller 6.
And a traverse box 5 is provided protrudingly. The traverse box 5 has a large number of threads (
A contact roller 6 having four traverse guides 4 in the embodiment is rotatably supported by a bearing 7a (FIG. 3) attached to a case 7. The contact roller 6 rotates in contact with the winding bobbin B, and in a circumferential speed control type spindle winding machine, for example, as shown in FIG.
A gear 64 is attached to the base of the contact roller 6, the teeth of the gear 64 are detected by a pickup 65, and the winding speed is controlled so that the yarn take-up speed is constant according to the detection signal. Further, in the case of spindle winding using the tension control method, IIJ m is adjusted so that the yarn tension detected by a tension detector (not shown) becomes a predetermined value.

A turret 12 is rotatably supported on the frame 1.

That is, as shown in FIG. 4, the turret 12 is rotatably supported around a support shaft 12a. A bobbin holder 13, 13' is rotatably protruded from the turret 12. The bobbin B has appropriate thread locking means, such as a thread hook S having a U-shaped cross section, which is bored in the circumferential direction on the circumferential surface near the end face of the bobbin B. Bobbin B is attached to each bobbin holder 1
3. Attach 4 pieces to 13'.

A pair of positioning recesses (not shown) are bored in the circumferential surface of the turret 12 at symmetrical positions with respect to the support shaft 12a. Further, the n-frame 1 is provided with a cylinder (not shown) for advancing and retracting a positioning pin (not shown) that fits into the recess.

As shown in FIGS. 1 and 2, a rotary actuator 42 is attached to the lower surface of the case 7, which supports the contact roller 6, on the opposite side from the front frame 1. A thread hooking arm 41 is attached to the rotary actuator 42 so that it can swing. At the tip of the threading arm 41, there is a bar 4 for threading.
As shown in FIG. 1, a large number (four in FIG. 1) of thread hook guides 44 are provided at equal intervals on the bar 43. By operating the rotary actuator 42, the thread guide 44 provided at the tip of the arm 41 is moved to a standby position on the horizontal side of the contact row 56, and the thread guide 44 below the contact roller 6 is moved to the standby position. It is possible to oscillate between.

When the thread guide 44 is in the standby position, the straight line connecting the contact roller 6 and the thread guide 44 is located closer to the contact 1-0-ra 6 than the common tangent between the contact roller 6 and the bobbin B. Further, when the threading guide 44 is in the threading position, the straight line connecting the contact roller 6 and the threading guide 44 approximates the path of the crossing thread between the bobbins at the time of steady switching.

In FIG. 2, the driver i of the traverse guide 4
- A thread removal guide 9 extending in the traverse direction is swingably supported above the traverse box 5 by a bin 8. The tip of the rod 10a of the swing cylinder 10 is connected to the line removal guide 9, and the rear end of the swing cylinder 10 is engaged with the upper part of the traverse box 5 through a pin. When the rod 10a protrudes, the thread outer guide 9 swings to intersect the thread path of the thread Y, and the traveling thread Y is separated from the traverse guide 4.

The punch guide 11 is located facing the yarn removal guide 9 while sandwiching the yarn Y, and is movable along the traverse direction by a punch moving cylinder 18.
each have one U-shaped quadruple (not shown) in each traverse area of the rubber guide 4.

A bracket 47 projects above the slide block 3, and a large number (four in FIG. 1) of thread distribution guides 48 are attached to the bracket 47 at equal intervals.

The main cylinder (not shown) supports the slide block 3 by pushing up a rod (not shown) with pressure fluid supplied through a conduit (not shown). The above pressure fluid is
Total slide block 3 carrying the traverse guide 4, traverse box 5 and contact roller 6! f
fi and the friction force generated when the slide block 3 is driven along the slide shaft 2, the slide block 3 is pushed upward with a predetermined force depending on the winding thickness of the yarn layer formed on the bobbin. controlled by a control valve so that

As shown in FIG. 4, a pulley 25 is attached to the support shaft 12a of the turret 12, and a belt 27 is stretched between the pulley 25 and the output shaft 26a of the electric motor 26 for rotating the turret. Turret 1 by motor 26
2 can be rotated.

In FIG. 4, the rotation guide 28 is made up of two semicircular members that can be divided into two in the circumferential direction, and the turret 12
The rotating guide 28 is attached to the machine frame 1, and a cam groove 288 is formed on the inner circumferential surface thereof.

Bobbin holder mounting hole 12c bored in turret 12
The sliding cylinder 29 of the bobbin holder 13, 13' is mounted so as to be able to vibrate in the axial direction. The sliding cylinder 29 has a bottle 3
1 is screwed onto the cam follower 3o, which is fitted into the cam groove 28a.

Therefore, as the turret 12 rotates, the cam groove 28a
moves 13 or 13' in the axial direction toward the turret 12 in cooperation with the cam follower 30, and then returns it to its original position.

Further, a shaft 34 is inserted through the center hole of the sliding cylinder 29 via bearings 32 and 33. A head 35 for mounting the bobbin B is attached to the tip of the shaft 34, and an output shaft of a spindle drive motor 36 is connected to the rear end.

Next, the threading method of the present invention will be explained based on FIGS. 5 and 6.

For threading, the arm 41 is placed in a standby state and the contact roller 6 and the spare bobbin B are brought into contact with each other. In this state, a push button (not shown) is pressed to start the spindle drive motor 36, rotate the bobbin holder 13 to which the spare bobbin B is attached, and at the same time start the drive motor of the traverse device 5.

Further, the swing cylinder 10 installed above the traverse box 5 is operated to swing the thread removal guide 9 toward the contact roller 6 side.

Yu. In this state, the yarn Y is sucked by the suction gun 45,
The thread distribution above the long traverse box 5 is guided by the guide 4.
8 (see Figure 5(a) and Figure 6<a>).

Furthermore, the yarn Y is passed between the contact roller 6 and the yarn removal guide 9 (see FIGS. 5(b) and 6(b)),
Next, while being careful not to lower the suction gun 45 below the common tangent line between the contact roller 6 and the spare bobbin B, the thread Y at the standby position is moved from the thread hook at the tip of the arm 41 to the thread hook provided at the bar 43. is threaded through the guide 44 (see FIGS. 5(c) and 6(c)).

After hanging the thread Y on the threading guide 44, a push button (not shown) is pressed, and the rotary actuator 42 is actuated to lower the threading arm 41 to the threading position. As a result, the path of the yarn suctioned from the contact roller 6 to the suction gun 45 via the guide 44 follows a path similar to the transition yarn from the full bobbin to the empty bobbin during steady switching of the automatic winder. take.

In addition, the suction gun 45 is attached to the bobbin holder 13.13'.
When the turret 12 is rotated, the bobbin holder 13'lt cylinder gun 45
Avoid hitting. (See Figures 5(d) and 6(d)).

Next, a push button (not shown) is pressed to start the spindle drive motor 36' and rotate the bobbin holder 13' on which the yarn winding bobbin is attached. Bobbin holder 1
When the predetermined time necessary for speeding up the turret 3' has elapsed, the timer starts rotating the turret 12. That is, the cylinder extracts the positioning bin from the four parts of the turret 12, and the turret rotating electric motor 26 rotates the turret 12 in the direction of arrow T in FIG. move.

During this rotation of the turret 12, the bobbin holder 13' moves inward in the axial direction due to engagement between the cam follower 30 provided thereon and the cam groove 28a formed in the cam 28. The thread Y is held in the U-shaped recess of the punch guide 11 by the eight movements of the bobbin holder 13' and the movement of the thread removal plate 9 toward the contact roller 6. The punch guide is moved toward the outside of the machine by the punch guide moving cylinder 18. With this operation, the thread is passed from the punch guide 11 through the guide 44,
The thread path of the thread suctioned by the suction gun 45 is such that the thread hook of the spare bobbin B attached to the bobbin boulder 13' is placed on a line that coincides with the groove S.

When the turret rotates further and the spare bobbin B and the yarn Y come into contact, the yarn Y is caught by the spare bobbin B by the groove S in which the yarn is hooked on the spare bobbin B.

Furthermore, as the turret 12 rotates, the bobbin holder 13
The cam follower 30 provided in the cam 28 engages with the cam groove 28a formed in the cam 28, and the bobbin holder 1 with an empty bobbin attached thereto.
3 moves to the outside of the machine in the axial direction. At the same time, thread Y
The punch guide 11, while being held in the letter-shaped recess, is moved toward the machine base by the punch guide moving cylinder 18. By this movement of the bobbin holder 13 and punch guide 11, a transfer coil (commonly known as a pig till) is formed on the empty bobbin B attached to the bobbin holder 13.

When the turret 12 rotates and the bobbin holder 13.13' becomes almost horizontal, move the suction gun 45 horizontally to the left and attach the bobbin holder 13 to the suction gun 45.
(Fig. 5 <e> and Fig. 6 (
(see e)).

Further, before and after the bobbin holder 13 reaches the normal winding position, the thread removal guide 9 is returned to its original position by the swing cylinder 10. [Thus, the yarn Y is released from the yarn removal guide 9 and the punch guide 11, captured by the traverse guide 4, and traversed.

Next, the thread hooking arm 41 is returned to the standby state by the rotary actuator 42 (see FIGS. 5(f) and 6(f)), and normal winding is started.

Embodiments In the above explanation, a spindle drive type automatic winder has been described, but the present invention can also be implemented in a friction drive type automatic winder.

Accordingly, the term contact roller herein includes contact rollers of spindle-driven automatic winders and friction rollers of friction-driven automatic winders.

If the contact roller is being actively driven, move the contact roller away from the spare bobbin, thread the thread between the contact roller and the spare bobbin, and connect the common tangent line between the spare bobbin and the contact roller (contact 1 to roller The common tangent line in the state where the and the spare bobbin are pressed into contact with each other may be set above the common tangent line.

In addition, in the embodiment described above, the thread hook was provided at the tip of the arm, and the thread hook guide was fixed to the bar, but sometimes the thread hook may be moved so that the guide moves toward the front side. good.

・i (Effect of the invention) According to the present invention, threading is carried out by iQ on the red path on the contact roller side from the common tangent between the spare bobbin and the contact roller located at the normal winding position, and the thread is threaded onto the guide. Since the thread is hung, the thread will not be wound around the bobbin when threading the thread onto the J guide.

In addition, the thread hook Gt guide is moved to the center side of the turret, and the thread running from the contact 1 roller to the thread guide is connected to the bobbin at the time of bobbin switching. By approximating the light path of the jumping yarn between the two, it is possible to reliably thread the thread onto the bobbin just by rotating the turret 12, as in the case of steady switching.

As described above, the present invention skillfully utilizes the automatic switching mechanism of an automatic winder to carry out initial threading, and even a multi-spindle winder can catch many threads almost in the same manner. Thread hooks can reliably add transfer coils to time packages.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an apparatus for carrying out the present invention, and FIG.
Figures 3 and 4 are partial sectional views of Figure M2, Figures 5 (a) to ('') are side views explaining the method of the present invention, and Figures 6 (a > to (f) ) is the same pressure surface view. 3...Slide block, 4...Traverse guide, 5...Traverse box, 6...Contact 1 to roller, 9...Year% L-guide, 10... ... Swing cylinder, 12... Turret,
13.13'...Bobbin holder, 36...Spindle drive motor, 41...Thread hook [pull arm, 42...Rotary actuator, 43...Thread hook is a bar, 44... Thread hook is a guide, 4
5...Tori Shongan Patent Applicant Teijin Corporation 1 Iku Co., Ltd. Patent Application Agent Eiji Sannaka #Oshido Yamamizu Sho 5 Figure 4

Claims (1)

[Claims] 1. In a method of winding yarn in a revolving automatic winder that rotates a turret to continuously wind yarn, the contact roller The threader hooks the yarn along the side path to the guide, and the threader later moves the guide to the center side of the turret, and the threader runs from the contact roller to the guide. is made to approximate the passing light path between the bobbins when switching the bobbins, and then the turret is rotated to move the yarn take-up revolving bobbin to the normal winding position, during which time the yarn is hung on the bobbin. How to thread a revolving type automatic winder.