JP2833261B2 - Spinning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning apparatus for manufacturing a core yarn using an elastic yarn as a core yarn, and more particularly to a spinning device for gripping an elastic yarn when the core yarn breaks.

[0002]

2. Description of the Related Art A core yarn manufacturing device (spinning device) using an elastic yarn as a core yarn is introduced from a front roller of a draft device while stretching the elastic yarn from a package wound with the elastic yarn, and is drafted by the draft device. The fiber yarn is supplied to an air spinning nozzle together with the fiber bundle and twisted to produce a core yarn having an elastic yarn as a core yarn. Then, the manufactured core yarn is wound into a package at a winding section.

[0003]

In the above spinning apparatus, when the yarn end of the elastic yarn is released due to the breakage of the core yarn, the yarn end of the elastic yarn rapidly shrinks due to its own elastic restoring force. As a result, there is a problem in that the wire is detached from the yarn guide or the like and gets into the yarn layer of the package. Therefore, there is a problem that it is difficult to find the end of the elastic yarn during the splicing operation after the yarn breakage.

Accordingly, the present invention has been made to solve the above problems, and can secure the yarn end of the elastic yarn at a predetermined position when the yarn breakage of the core yarn occurs. An object of the present invention is to provide a spinning device that eliminates the trouble of searching for a yarn end.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to produce a core yarn having an elastic yarn as a core yarn by twisting an elastic yarn supplied while being stretched together with a drafted fiber bundle. In the spinning device, the elastic yarn is placed between the elastic yarn package and the front roller of the draft device.
The yarn path is formed in an exposed state, and the exposed yarn path
In addition, a clamper is provided for gripping the elastic yarn when the core yarn breaks, and cutting the elastic yarn on the downstream side so as to tear the elastic yarn in cooperation with the front roller on the downstream side.

[0006]

When the yarn breakage of the core yarn occurs, the clamper is operated by the detection signal or the like to grip the elastic yarn. When the core yarn breaks, since the parts other than the back roller are driven, the elastic yarn downstream from the clamper is cut off by the cooperating operation of gripping of the clamper and driving of the front roller. The yarn end on the package side of the yarn is held at the clamper position. At this time, elasticity
The yarn path is exposed, and a clamper is
When the core yarn breaks,
Since the yarn end of the elastic yarn can be secured at the position of the clamper in a bare state, the trouble of searching for the yarn end of the elastic yarn at the time of the splicing operation is eliminated, and the yarn end of the elastic yarn can be easily pulled out. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a spinning unit of a spinning apparatus, and a plurality of spinning units 1 are arranged side by side in a direction perpendicular to the plane of FIG. A draft device 6 for aligning a sliver 4 supplied from a rear can 2 via a trumpet guide 3 to a predetermined fiber bundle 5 is provided at an upper portion of each spinning unit 1.

The draft device 6 mainly includes a back roller 7, an apron 8, and a front roller 9. Downstream of the draft device 6, an elastic yarn 11 supplied from an elastic yarn supply unit 10 described later is drafted. A core yarn 12 formed by twisting together with a fiber bundle by the action of a swirling airflow of compressed air, using an elastic yarn 11 as a core yarn and wrapping a fiber around the core yarn.
Is provided.

Downstream of the air spinning nozzle 13, a delivery roller 14 for the manufactured core yarn 12 is provided. A take section 16 is provided. A slab catcher 1 is provided between the delivery roller 14 and the winding section 16 for detecting a defective portion such as yarn unevenness of the core yarn 12 fed.
The driving of the back roller 7 of the draft device 6 is stopped by a signal from the slab catcher 17, and a cutter (not shown) disposed between the air spinning nozzle 13 and the delivery roller 14 operates. The core yarn 12 is cut. Therefore, when a yarn break occurs, the fiber bundles 5 downstream of the back roller 7 are cut off from the back roller 7 because the parts other than the back roller 7 are driven, and the fiber bundle 5 is disposed near the cutter. No suction will be removed from the suction port.

On the other hand, a supply portion 10 of an elastic yarn 11 is provided above the draft device 6 as shown in FIGS.
From the air spinning nozzle 13 together with the fiber bundle 5. The supply unit 10 is provided with a common drive shaft 19 which is wound around the spinning units 1 arranged side by side and is rotationally driven by one motor 18.
A rotating roller 21 for driving a package 20 of the elastic yarn 11 is attached to each weight 9.

The package 20 of the elastic yarn 11 is a horizontal shaft 2.
2 is rotatably supported by a cradle arm 23 which is attached to the upper roller 2 so as to be able to freely ascend.
It comes into contact with it and receives rotation. And
A stopper 24 for stopping rotation of the package 20 when the core yarn 12 breaks is provided between the rotating roller 21 and the package 20 so as to be freely inserted and removed.

Specifically, a support frame 26 for supporting the drive shaft 19 of the rotating roller 21 via a bearing 25 is provided above the spinning unit 1, and the base of the stopper 24 is supported on the support frame 26 by a support shaft. It is attached rotatably by 27,
The tip of the stopper 24 is rotated by the rotation of the rotation roller 21.
And the package 20. The stopper 24 preferably has a shape inserted between the rotating roller 21 and the package 20 without contact with the rotating roller 21.

A spring 28 for urging the stopper 24 in the insertion direction is connected to the stopper 24. The stopper 24 is normally held against the spring 28 in a state where the stopper 24 is removed from between the rotary roller 21 and the package 20. A solenoid 29 that is turned off by a signal from the slab catcher 17 and inserts the stopper 24 between the rotating roller 21 and the package 20 is connected.

When the solenoid 29 is turned off and the stopper 24 is inserted between the rotary roller 21 and the package 20, the electromagnet constituting the solenoid 29 and the attraction plate are largely separated from each other. Even if the solenoid 29 is turned on, the stopper 24 cannot be removed from between the rotary roller 21 and the package 20 by the electromagnetic force. A manual operation lever 30 for removing the stopper 24 from between the rotating roller 21 and the package 20 is attached to the stopper 24.

The support frame 26 is provided with a yarn guide 31 for guiding the elastic yarn 11 unwound from the package 20 to the front roller 9, and is fed to a yarn path downstream of the yarn guide 31. A sensor 32 for the elastic yarn 11 is provided, and a clamper 33 for gripping the elastic yarn 11 when the core yarn 12 breaks. Sensor 3
2 is for detecting the presence / absence of the elastic yarn 11;
When the zero becomes empty or when the elastic yarn 11 breaks in the middle, this is detected, and the back roller 7 is stopped by the signal to prevent the problem that a core yarn without a core yarn is manufactured.

The clamper 33 comprises a fixed piece 33a fixed to the support frame 26 and a movable piece 33b rotatably mounted on a shaft 34. One end of the movable piece 33b is connected to the stopper 24 via a link 35. And the stopper 24
The fixed piece 33a and the movable piece 3
3b, the elastic yarn 11 is configured to be gripped.

Next, the operation of the embodiment will be described. Rotary roller 2
1, the package 2 is driven in the direction of unwinding the elastic yarn 11, and the unwound elastic yarn 11 is given a predetermined tension due to the speed difference between the front roller 9 and the rotating roller 21 together with the fiber bundle 5 after drafting. It is introduced from the front roller 9 to the air spinning nozzle 13 and twisted. The core yarn 12 manufactured in this manner is fed to a winding unit 16 via a delivery roller 14 and wound into a package 15.

In such an operating state, the slab catcher 17
Detects a defective portion of the core yarn 12, the cutter (not shown) disposed between the pneumatic spinning nozzle 13 and the delivery roller 14 operates by this signal to cut the core yarn 12, and the back roller 7 of the draft device 6 At the same time, the stopper 24 of the elastic thread supply unit 10 is inserted between the rotary roller 21 and the package 20 by the force of the spring 28 accompanying the turning off of the solenoid 29. Further, the movable piece 33b of the clamper 33 closes with respect to the fixed piece 33a in conjunction with the operation of the stopper 24, and grips the elastic thread 11.

When the yarn breakage of the core yarn 12 occurs, the stopper 24 is rotated by the rotating roller 21 and the package 20.
And the rotation of the package 20 is stopped by friction, the supply of the elastic yarn 11 can be stopped instantaneously and reliably only for the weight in which the thread breakage has occurred. The problem that the elastic yarn 11 continues to be supplied is eliminated.

On the other hand, when the back roller 7 stops, the fiber bundle 5 downstream of the back roller 7 is torn off from the back roller 7,
By the gripping of the clamper 33, the elastic yarn 11 downstream from the clamper 33 is torn off from the clamper 33, and both are removed by suction from the above-mentioned suction port (not shown).

Without the clamper 33, the elastic yarn 12 is torn off at any part between the package 20 and the front roller 9, and the yarn end on the package 20 side is drawn into the yarn layer of the package 20 by its elastic restoring force. However, because of the presence of the clamper 33, the yarn end on the package 20 side is held at the position of the clamper 33, and does not come off the yarn guide 31 and fall into the yarn layer of the package 20.

After the yarn breakage, the splicing of the cut core yarn 12 is performed by a yarn splicing device (not shown) provided so as to be able to run along the internal space of the spinning unit. Spinning nozzle 13
It is necessary to threading up, but particularly in the position of the yarn end clamper 33 of the elastic yarn 12, moreover clamper 33 is peeled
Since the thread end is provided in the exposed state in the bare state, there is no need to search for the thread end from the package 20, and the thread end of the elastic yarn 12 can be pulled out immediately and easily from the position of the clamper 33 to perform the threading. it can.

[0024]

In summary, according to the present invention, when a yarn break occurs in the core yarn, the clamper grips the elastic yarn and cuts the elastic yarn together with the front roller of the draft device so as to tear the downstream side of the elastic yarn. Therefore, it is possible to reliably secure the yarn end at the clamper position, and it is possible to eliminate the trouble of searching for the yarn end of the elastic yarn during the splicing operation. At this time, the bullet
The yarn path of the raw yarn is exposed, and a clamper is
When the core yarn breaks,
Since the yarn end of the elastic yarn can be secured at the position of the clamper in a bare state, the trouble of searching for the yarn end of the elastic yarn at the time of splicing work is eliminated, and the yarn end of the elastic yarn can be easily pulled out. .

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a spinning device according to the present invention.

FIG. 2 is a perspective view showing a configuration of an elastic yarn supply unit in FIG.

[Explanation of symbols]

 11 Elastic yarn 12 Core yarn 33 Clamper

Claims (1)

(57) [Claims] 1. A spinning apparatus for producing a core yarn having an elastic yarn as a core yarn by twisting an elastic yarn supplied while being stretched together with a drafted fiber bundle, and a package of the elastic yarn and a front roller of the draft device. The thread path of the elastic yarn is formed in an exposed state, and the exposed yarn
A spinning device provided on a road with a clamper for gripping an elastic yarn when a yarn breaks in a core yarn and cutting the elastic yarn on the downstream side so as to tear the elastic yarn in cooperation with a front roller on the downstream side.