JP2715715B2 - Automatic winder yarn splicing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION For example, an automatic winder yarn used between a spinning machine and a loom and wound into a predetermined amount of a winding package excluding defective portions such as slabs and neps in a yarn unwound from a yarn supplying bobbin. Concerning the connection method.

[0002]

2. Description of the Related Art An automatic winder has a plurality of winding units arranged in parallel.
This will be described below.

In FIG. 2, a winding unit 1 is fixed in position by a support pipe 2 and a suction pipe 3, and a yarn Y drawn from a yarn supplying bobbin 4 positioned and supplied to a predetermined position of the winding unit 1 is a balun breaker. 6, the yarn is passed through a tensor 7 for applying a predetermined yarn tension, a slab catcher 8 for detecting a defective portion of the yarn, and the like, and is wound by a traverse drum 13 on a winding package 14 which rotates. Reference numeral 15 denotes a yarn splicing device, 16 denotes a suction mouth that guides the upper thread of the package to the yarn splicing device 15, and 17 denotes a relay pipe that guides the lower yarn of the yarn supplying bobbin to the yarn splicing device 15. The unit 1 has the above members, and a number of such winding units 1 are arranged in parallel to constitute one automatic winder.

When a thread break or the like occurs, the thread break signal is lost in the slab catcher 8 and the thread break is detected. The upper thread unwound from the winding package 14 is sucked by the tip of the suction mouth 16, and is conveyed to the yarn splicing device 15 by the turning operation of the suction mouth 16. Further, the lower thread stopped on the balloon breaker 6 is sucked by the tip of the relay pipe 17,
The turning operation of the relay pipe 17 is carried to the yarn joining device 15 to perform the yarn joining.

[0005] Further, in the winding unit 1 described above,
The balloon of the yarn unwound from the yarn supplying bobbin 4 is limited to an appropriate one by the balloon breaker 6, so that the yarn supplying bobbin 4 is not broken. However, when the balloon breaker 6 is fixed to the machine frame 5, the unwinding of the yarn supplying bobbin 4 proceeds, and the distance from the chess 4a, which is the unwound portion of the yarn, to the lower end of the balloon breaker 6 gradually increases. The function of the balloon breaker 6 is deteriorated, and yarn breakage or the like may occur near the end of unwinding of the yarn supplying bobbin 4. Therefore, as disclosed in Japanese Patent Application Laid-Open No. 61-178373, the position of the chess 4b of the yarn supplying bobbin 4 is detected, and the balloon breaker 6 is gradually lowered to cover the yarn supplying bobbin 4. Have been. When the balloon breaker 6 that covers the yarn supplying bobbin 4 is used, an increase in the yarn tension at the end of unwinding is suppressed to about 60%, the yarn breakage is reduced by that amount, and the winding speed can be increased. .

[0006]

In the automatic winder described in the prior art, in particular, in the case of using a balloon breaker 6 to cover the unwinding of the yarn supplying bobbin 4, if the yarn breakage occurs during unwinding, the balloon breaker is used. Winding is interrupted in a state in which 6 is still covered on the yarn supplying bobbin 4. At that time, the yarn on the way above the yarn supplying bobbin 4 is loosened to some extent and further guided by the balloon breaker 6,
It tends to slip down. The yarn feeding bobbin 4 is naturally unwound by the slipped-down yarn, and a twist (tangling due to twisting) may occur. If the piecing is performed as it is, there is a problem that the twist is mixed.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object the use of a balloon breaker which is covered together with the unwinding of the yarn supplying bobbin. In particular, it is an object of the present invention to provide a yarn splicing method for an automatic winder that can prevent the incorporation of a twist at the time of splicing.

[0008]

In order to achieve the above object, a yarn splicing method for an automatic winder according to the present invention is directed to a yarn provided on the way of winding a yarn unwound from a yarn supplying bobbin into a winding package. In a yarn splicing method of an automatic winder including a splicing device and a balloon breaker that covers the unwinding of the yarn supplying bobbin, a retractable lever that is in contact with the bobbin top is provided, and the yarn breaker is moved from a predetermined position during yarn splicing. While raising the bobbin, the lever is brought into contact with the top of the bobbin to perform piecing.

[0009]

[Action] Raise the balloon breaker once at the time of splicing,
When the lever is brought into contact with the top of the bobbin, the thread that is going to turn and slip down stops at the lever.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part of an automatic winder used in the yarn joining method of the present invention.

In FIG. 1, the balloon breaker 30 is gradually covered with the unwinding of the yarn supplying bobbin 4 under the control of the controller 20, and maintains the state as shown by the two-dot chain line. Further, the lever 21 which is swung by the rotary solenoid 22 can contact the top of the yarn supplying bobbin 4. The solenoid 22 is also controlled by the coil roller 20. Reference numeral 8 denotes a slab catcher, which detects a yarn break or the like and outputs a signal necessary for starting a piecing operation to the controller 20.

The balloon breaker 30 includes a first cylindrical body 31 having a throttle 31a, and a second cylindrical body 3 covering the first cylindrical body 31.
2 and a sensor 33 attached to the second arm 32b. The first cylinder 31 is a magnet 31b
The first cylindrical body 31 is stopped by the plate 34a of the stopper shaft 34, and the yarn feeding bobbin 4
And the stop 31a do not interfere with each other. The first arm 32 a of the second cylinder 32 is attached to the lifting block 35. The elevating block 35 is inserted into a rod 37 suspended from the fixed block 36 and is connected to a piston rod 38a of a cylinder 38 erected on the fixed block, and the second cylindrical body 32 can be moved up and down in accordance with the expansion and contraction of the cylinder 38. It has become. Then, the sensor 33 attached to the second arm 32b detects the position of the chess portion 4a of the yarn supplying bobbin 4, and this position information is output to the controller 20. The controller 20 operates the servo valve 39, the piston rod 38a of the cylinder 38 gradually extends, and the distance between the second cylindrical body 32 and the chess part 4a is kept substantially constant.

Next, a yarn splicing method using the above-described automatic winder will be described below. The slab catcher 8 detects a thread break or the like, the winding is interrupted, and the piecing operation starts. Starting from the signal of the slab catcher 8 or the like, the controller 20 operates the servo valve 39, the piston rod 38a of the cylinder 38 is shortened rapidly, and the balloon breaker 30 is brought to the raised position shown by the solid line. Then, the controller 20 operates the solenoid 22 to swing the lever 21 from the retracted position indicated by the two-dot chain line to the contact position indicated by the solid line. The piecing operation described with reference to FIG. 2 is performed in conjunction with the movement of the balloon breaker 30 and the lever 21 described above.
The slack of the yarn during the piecing operation is stopped by the lever 21 without propagating downward. The lever 21 is in line contact with the top of the yarn supplying bobbin 4, but the propagation of slack involves the turning of the yarn. With this lever, the yarn of the yarn supplying bobbin 4 is not largely slackened, and the occurrence of twisting is prevented. When the piecing is completed, the lever 21 swings to the retracted position indicated by the two-dot chain line, the balloon breaker 30 also rapidly descends to the original operating position indicated by the two-dot chain line, and winding is resumed.

[0014]

The yarn splicing method of the automatic winder according to the present invention is provided with a retractable lever which comes into contact with the bobbin top, raises the balloon breaker from a predetermined position covering the yarn feeding bobbin at the time of splicing, and moves the balloon breaker to the bobbin top. The thread is spliced by bringing the lever into contact with the thread, and the thread that is going to slip down and fall is stopped by the lever. Can be completely prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an automatic winder used in the yarn joining method of the present invention.

FIG. 2 is a device layout diagram of a winding unit of the automatic winder.

[Explanation of symbols]

 Reference Signs List 4 yarn feeding bobbin 14 winding package 20 controller 21 lever 30 balloon breaker

Claims (1)

(57) [Claims] 1. A yarn for an automatic winder, comprising: a yarn splicing device provided in the course of winding a yarn unwound from a yarn supplying bobbin into a winding package; and a balloon breaker covered with the unwinding of the yarn supplying bobbin. In the splicing method, a retractable lever that contacts the bobbin top is provided, and at the time of yarn splicing, the balloon breaker is raised from a predetermined position, and the thread is spliced by contacting the lever with the bobbin top. Winder splicing method.