JPH04352828A - Spinning apparatus - Google Patents

Abstract

PURPOSE:To prevent production of abnormal yarn containing no elastic yarn by providing a sensor for confirming existence of elastic yarn on a yarn passage of elastic yarn when core yarn using the elastic yarn as a core is obtained. CONSTITUTION:When elastic yarn 11 is twisted with a fiber bundle 5 after draft to provide core yarn 12 using the elastic yarn as a core, a sensor 32 for confirming existence of the elastic yarn 11 is on the yarn passage of the elastic yarn 11 is provided. Thereby when the elastic yarn does not exist, spinning can be interrupted and it is previously prevented that abnormal yarn containing no elastic yarn is produced, because existence of the elastic yarn can directly be confirmed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a spinning apparatus for producing core yarn using an elastic yarn as a core yarn.

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 fed to an air spinning nozzle together with the fiber bundle, and twisted by a swirling stream of compressed air to produce a core yarn.

[0003]The manufactured core yarn is then wound into a package in a winding section while yarn defects such as yarn unevenness are detected by a slab catcher. When the slab catcher detects a yarn defect, that portion is cut off by a cutter, and winding is restarted after the yarn is spliced by the yarn splicing device, making it possible to produce a core yarn free of yarn defects.

0004

[Problem to be solved by the invention] By the way, in such a spinning device, even when the elastic yarn is empty, there is a slight change in the thickness of the core yarn produced, so this is detected by the slab catcher. In such a case, spinning continues, resulting in the production of abnormal yarn without elastic yarn.

[0005]The present invention was made to solve the above problems, and it is possible to interrupt spinning when the elastic yarn becomes empty, thereby preventing the production of abnormal yarn without elastic yarn. The purpose is to provide a spinning device that can prevent the above.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a spinning device for manufacturing a core yarn having an elastic yarn as a core yarn by twisting an elastic yarn together with a drafted fiber bundle. A feature of the present invention is that a sensor is provided in the thread path to confirm the presence or absence of an elastic thread.

[0007]

[Operation] Since the presence or absence of elastic yarn can be directly confirmed by the sensor, spinning can be interrupted when there is no elastic yarn, and the production of abnormal yarn without elastic yarn can be prevented. .

[0008]

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. Further, a slab catcher 17 is provided between the delivery roller 14 and the winding section 16 to detect yarn defects such as yarn unevenness in the core yarn 12 being fed. The drive of the back roller 7 is stopped, and the air spinning nozzle 13 and delivery roller 14
A cutter (not shown) disposed between the two is operated to cut the core yarn 12. Therefore, when yarn breakage occurs, the fiber bundle 5 downstream of the back roller 7 is torn off from the back roller 7 because the rollers other than the back roller 7 are being driven. It will be sucked 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 yarn 11, and the elastic yarn 11 supplied from this section passes 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 checking the presence or absence of the elastic yarn 11, and a clamper 33 for gripping the elastic yarn 11 when the core yarn 12 breaks. The sensor 32 consists of an optical sensor, a filler, etc., and in response to a signal indicating no elastic yarn from the sensor 32, the drive of the back roller 7 of the drafting device 6 is stopped in the same way as the signal from the slab catcher 17, and the air spinning nozzle 13 is stopped. A cutter (not shown) disposed between the delivery roller 14 and the delivery roller 14 is operated to cut the core yarn 12. Specifically, the signal from the sensor, like the signal from the slab catcher 17, is input to a control device (not shown) of the spinning unit, and the control device performs the above control to interrupt spinning.

The clamper 33 consists of a fixed piece 33a fixed to the support frame 26 and a movable piece 33b rotatably attached to a shaft 34, and 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 yarn defect in the core yarn 12, this signal causes a cutter (not shown) disposed between the air spinning nozzle 13 and the delivery roller 14 to operate to remove the core yarn 12.
is cut, and the back roller 7 of the draft device 6 is stopped, and the stopper 24 of the elastic yarn supply section 10 is inserted between the rotary roller 21 and the package 20 by the force of the spring 28 as the solenoid 29 is turned off. Ru. 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 way, 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 thread up to 3, but since the end of the elastic thread 12 is located at the clamper 33, there is no need to worry about searching for the end of the thread, and threading can be done by immediately and easily pulling it out from that position. I'm struggling.

By the way, during the production of core yarn, elastic yarn 1
When one package 20 is empty or the elastic yarn is cut in the middle, the sensor 32 detects that there is no elastic yarn 11, and the back roller 7 of the drafting device 6 is stopped from being driven by the signal. At the same time, the air spinning nozzle 13
A cutter (not shown) disposed between the delivery roller 14 and the delivery roller 14 is operated to cut the core yarn 12. As described above, since spinning can be interrupted when there is no elastic yarn 11, the problem of producing abnormal yarn without elastic yarn does not occur.

[0026]

[Effects of the Invention] In summary, according to the present invention, since a sensor is provided in the yarn path of the elastic yarn to check the presence or absence of the elastic yarn, the sensor directly checks the presence or absence of the elastic yarn, and if there is no elastic yarn, the spinning is stopped. This can prevent the production of abnormal yarns without elastic yarns.

[Brief explanation of drawings]

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]

5 Fiber bundle 11 Elastic thread 12 Core yarn 31 Sensor

Claims (1)

[Claims] 1. A sensor for checking the presence or absence of an elastic yarn in the yarn path of the elastic yarn in a spinning device that produces a core yarn having the elastic yarn as a core yarn by twisting the elastic yarn together with a drafted fiber bundle. A spinning device characterized by being provided with.