JPH04352829A - Spinning apparatus - Google Patents

Abstract

PURPOSE:To eliminate trouble for looking for yarn end of elastic yarn in yarn ending operation by securing the yarn end of the elastic yarn at a definite position when breakage of core yarn occurs. CONSTITUTION:In a spinning apparatus for producing core yarn 12 using elastic yarn 11 as a core by twisting the elastic yarn 11 fed while being drawn with a drafted fiber bundle 5, a clamp 33 for holding the elastic yarn 11 in breakage of the core yarn 12 is provided on a yarn passage of the above-mentioned elastic yarn 11.

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 producing core yarn using an elastic yarn as a core yarn, and more particularly to a spinning apparatus that grips the elastic yarn when the core yarn breaks.

0002

[Prior Art] A core yarn manufacturing device (spinning device) using an elastic yarn as a core yarn introduces the elastic yarn from a package wound with the elastic yarn through the front roller of a drafting device while stretching it. The fiber bundle is then fed to an air spinning nozzle and twisted to produce a core yarn with an elastic yarn as the core yarn. The manufactured core yarn is then wound into a package at a winding section.

0003

[Problems to be Solved by the Invention] In the above-mentioned spinning device, when the core yarn breaks and the end of the elastic yarn is released, the end of the elastic yarn rapidly shrinks due to its own elastic restoring force. There is a problem in that the yarn comes off from the yarn guide etc. and gets mixed into the yarn layer of the package. Therefore, there is a problem in that it is difficult to find the end of the elastic yarn when splicing the yarn after the yarn breaks.

The present invention has been made to solve the above-mentioned problems.It is possible to secure the end of the elastic yarn at a fixed position when the core yarn breaks, and to secure the end of the elastic yarn at a fixed position when the core yarn breaks. To provide a spinning device that eliminates the trouble of searching for yarn ends.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention twists an elastic yarn supplied while being stretched together with a drafted fiber bundle to produce a core yarn having the elastic yarn as a core yarn. The spinning apparatus is characterized in that a clamper is provided in the yarn path of the elastic yarn to grip the elastic yarn when the core yarn breaks.

[0006]

[Operation] When the core yarn breaks, the clamper is actuated by the detection signal etc. to grip the elastic thread. Therefore, when the core yarn breaks, the end of the elastic yarn can be secured at a fixed position, which eliminates the trouble of searching for the end of the elastic yarn during splicing work.

[0007]

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 in parallel in a direction perpendicular to the plane of the drawing of FIG. A draft device 6 is provided at the top of each spinning unit 1 for drawing the sliver 4 supplied from the rear can 2 via the trumpet guide 3 into a predetermined fiber bundle 5.

The draft device 6 is mainly composed of a back roller 7, an apron 8, and a front roller 9, and downstream of this draft device 6, an elastic yarn 11 supplied from an elastic yarn supply section 10, which will be described later, is drafted. A core yarn 12 is formed by twisting the fiber bundle together with the action of a swirling airflow of compressed air and wrapping the fibers around the elastic yarn 11 as a core yarn.
An air spinning nozzle 13 is provided for producing.

A delivery roller 14 for the manufactured core yarn 12 is provided downstream of the air spinning nozzle 13, and a winding roller 14 for winding up the core yarn 12 fed from the delivery roller 14 to form a package 15 is provided at the lower front of the spinning unit 1. A recess 16 is provided. Also, a slab catcher 1 is provided between the delivery roller 14 and the winding section 16 for detecting defects such as yarn unevenness in the core yarn 12 being fed.
A signal from the slab catcher 17 causes the drive of the back roller 7 of the draft device 6 to be stopped, and at the same time, a cutter (not shown) disposed between the air spinning nozzle 13 and the delivery roller 14 is activated. Core yarn 12 is adapted to be cut. Therefore, when yarn breakage occurs, the fiber bundle 5 downstream of the back roller 7 is torn to shreds from the back roller 7 because the rollers other than the back roller 7 are being driven. It will be suctioned out from the suction port.

On the other hand, above the draft device 6, as shown in FIGS. 1 and 2, there is provided a supply section 10 for supplying elastic yarns 11, and the elastic yarns 11 supplied from this section pass through the air from the front roller 9 together with the fiber bundle 5. It is designed to be introduced into the spinning nozzle 13. This supply section 10 is provided with a common drive shaft 19 that extends along the spinning units 1 arranged in parallel and is rotationally driven by one motor 18.
A rotating roller 21 for driving a package 20 of elastic yarn 11 is attached to each weight.

The package 20 of the elastic yarn 11 is mounted on the horizontal axis 2
2, which is rotatably supported by a cradle arm 23 that is attached to the cradle arm 23 so that it can be raised and lowered, and its own weight moves the rotating roller 21
It contacts the top and receives rotation. and,
A stopper 24 that stops the 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 insertable and removable.

Specifically, a support frame 26 is provided above the spinning unit 1 to support the drive shaft 19 of the rotating roller 21 via a bearing 25, and the base of the stopper 24 is attached to this support frame 26 as a support shaft. It is rotatably attached by 27,
The stopper 24 rotates so that its tip end touches the rotating roller 21.
and the package 20. The stopper 24 is preferably shaped to be inserted between the rotating roller 21 and the package 20 without contacting the rotating roller 21.

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

Note that when the solenoid 29 is OFF and the stopper 24 is inserted between the rotating roller 21 and the package 20, the electromagnet and the adsorption plate forming the solenoid 29 are separated by a large distance. Even if the solenoid 29 is turned on, the stopper 24 cannot be pulled out from between the rotating roller 21 and the package 20 by electromagnetic force. A manual operating 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. A sensor 32 for the elastic yarn 11 and a clamper 33 for gripping the elastic yarn 11 when the core yarn 12 breaks are provided. sensor 3
2 detects the presence or absence of the elastic thread 11, and the package 2
When the yarn becomes empty or the elastic yarn 11 is cut in the middle, this is detected, and the back roller 7 is stopped based on the signal, thereby preventing the problem of producing a core yarn without a core yarn.

The clamper 33 is composed of a fixed piece 33a fixed to the support frame 26 and a movable piece 33b rotatably attached to 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 move in conjunction with the operation in the insertion direction.
3b so as to grip the elastic thread 11.

Next, the operation of the embodiment will be described. Rotating roller 2
1, the package 2 is driven in the direction of unwinding the elastic yarn 11, and the unwound elastic yarn 11 is applied with 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 being drafted. It is introduced from the front roller 9 into the air spinning nozzle 13 and twisted. The core yarn 12 thus produced is fed to the winding section 16 via the delivery roller 14 and wound into a package 15.

In this operating state, the slab catcher 17
When detects a defective part of the core yarn 12, this signal activates a cutter (not shown) disposed between the air spinning nozzle 13 and the delivery roller 14 to cut the core yarn 12, and the back roller 7 of the drafting device 6 operates to cut the core yarn 12. At the same time, the stopper 24 of the elastic yarn supply section 10 is inserted between the rotating roller 21 and the package 20 by the force of the spring 28 as the solenoid 29 is turned off. Further, in conjunction with the operation of the stopper 24, the movable piece 33b of the clamper 33 closes against the fixed piece 33a, and grips the elastic thread 11.

When the core yarn 12 breaks in this manner, the stopper 24 is inserted between the rotating roller 21 and the package 2 to stop the rotation of the package 20 by friction, so that only the weight where the thread breakage occurs has elasticity. The supply of the thread 11 can be instantly and reliably stopped, and the problem of the elastic thread 11 continuing to be supplied even though thread breakage has occurred is eliminated.

On the other hand, when the back roller 7 stops, the fiber bundle 5 downstream from it is torn off from the back roller 7.
By gripping the clamper 33, the elastic yarn 11 downstream from the clamper 33 is torn off from the clamper 33, and both are suctioned away from the aforementioned suction port (not shown).

Without the clamper 33, the elastic yarn 12 would be torn off somewhere between the package 20 and the front roller 9, and the yarn end on the package 20 side would be drawn into the yarn layer of the package 20 by its elastic restoring force. However, since there is a clamper 33, the yarn end on the package 20 side is held at the position of the clamper 33, and does not come off from the yarn guide 31 and get mixed into the yarn layer of the package 20.

After the yarn breakage, the cut core yarn 12 is spliced by a yarn splicing device (not shown) which is provided so as to be able to run freely along the inner space of the spinning unit. At this time, the fiber bundle 5 and the elastic yarn 12 are Spinning nozzle 1
It is necessary to thread the elastic thread up to 3, but since the thread end of the elastic thread 12 is located at the position of the clamper 33, there is no need to worry about searching for the thread end, and threading can be carried out by immediately and easily pulling it out from that position. Can be done.

[0024]

[Effects of the Invention] In summary, according to the present invention, when the core yarn breaks, the clamper grips the elastic yarn, so the end of the elastic yarn can always be kept at a constant position, and it can be used during yarn splicing work. The trouble of searching for the end of the elastic thread can be eliminated.

[Brief explanation of the drawing]

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

FIG. 2 is a perspective view showing the configuration of the elastic yarn supply section in FIG. 1;

[Explanation of symbols]

11 Elastic thread 12 Core yarn 33 Clamper

Claims (1)

[Claims] 1. A spinning device that produces a core yarn having the elastic yarn as a core yarn by twisting an elastic yarn supplied while being stretched together with a drafted fiber bundle, in which a thread breakage of the core yarn occurs in the yarn path of the elastic yarn. A spinning device characterized by being provided with a clamper that sometimes grips an elastic yarn.