JP2800167B2 - Elastic yarn supply device and supply method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic yarn supplying device and an elastic yarn supplying method in an apparatus for spinning a core yarn having an elastic yarn as a core yarn and other devices which need to be supplied with an elastic yarn. .

[0002]

2. Description of the Related Art Conventionally, in a device for spinning a highly elastic core yarn using a rubber yarn or a polyurethane elastic yarn as a core yarn, an elastic yarn is placed at a predetermined position of a spinning unit at the time of starting operation or restarting operation after piecing. Since there was no device for feeding the tip of the fiber, all had to be done manually, which hindered complete automation such as in the case of core yarn spinning.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and an apparatus for automatically supplying elastic yarn without manual operation.

[0004]

According to the first aspect of the present invention, an elastic yarn clamping device is provided between an elastic yarn feeding device and an elastic yarn supply section, and the elastic yarn clamped by the clamp device. An air supply device capable of blowing an air flow in the direction of the elastic yarn supply section was installed in the apparatus.

According to the second aspect of the present invention, the elastic yarn is clamped by an elastic yarn clamping device provided between the elastic yarn feeding device and the elastic yarn supply portion, and is clamped by the clamp device by an air supply device. An air stream is blown toward the elastic yarn supply unit toward the elastic yarn to supply the elastic yarn to the elastic yarn supply unit.

[0006]

When the elastic yarn is supplied using this device, the clamping device is released during normal operation to allow the elastic yarn to run freely, but the spinning is interrupted due to yarn breakage or the like. During this time, the elastic device is clamped by operating the clamp device. When the operation is resumed, the air flow is blown onto the elastic yarn while operating the feeding device and the air injection device while maintaining the clamped state to feed the elastic yarn.
The portion of the elastic yarn that has been newly fed is sent to the elastic yarn supply unit by the airflow. When the elastic yarn supply section starts to take up the elastic yarn, the clamped elastic yarn on the yarn end side is pulled and cut between the clamp device and the elastic yarn supply section. The clamping device is then released.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the elastic yarn supplying device 1 of the present invention is applied to a core yarn manufacturing device 2 will be described below.

The elastic yarn supplying device 1 of the present invention comprises an elastic yarn feeding device 3 and a clamp device 4, and the elastic yarn Y supplied by the elastic yarn supplying device 1 is used as a front roller of the draft part 5 in the core yarn spinning device 2. The elastic yarn is supplied to the front roller 6 from an elastic yarn supply unit 7 on the upstream side of the roller 6.

The elastic yarn feeding device 3 has a feeding roller 10 on a rotating shaft 9 supported by a support plate 8 provided for each weight.
Is fixed, and the end of the rotating shaft is connected to a motor 12 via a suitable rotation transmitting means 11 such as a belt. A clutch (not shown) is provided between each feeding roller 10 and the rotating shaft 9, and the feeding roller 10 is driven and stopped for each weight. Each support plate 8 has a shaft 13
The swing arms 14, 15 are fixed to the
At the end of 14, package isolation plate 16, swivel arm 15
Are provided with thread press rollers 17 at the ends thereof.

The lower extension end of the swing arm 14 is a cylinder.
The thread press roller 17 and the package separating plate 16 are interlocked with each other when the piston rod 19 is moved in and out. That is, the piston rod 19
, The thread press roller 17 moves out of the feed roller 10.
At the same time, the package separating plate 16 comes off the nip point between the package 20 and the feeding roller 10 described later, which are placed on the feeding roller 10, and the two are brought into contact with each other. Further, when the piston rod 19 is retracted, the thread press roller 17 separates from the feeding roller 10, and the package isolation plate 16 pushes into the nip point between the package 20 and the feeding roller 10, thereby isolating them.

A package 20 is rotatably supported on the upper side of the feeding roller 10 by an arm 21 rotatably supported by the support arm 8.

The clamp device 4 partially uses a small air cylinder. As shown in detail in FIG. 2 , the piston rod 2 of the clamp device main body cylinder 22 is used.
(3) The disk 24 is fixed to the tip, so that the elastic yarn Y introduced into the gap 27 formed by the end surface 25 of the clamp device main body cylinder 22 and the inner surface 26 of the disk 24 can be nipped. . A spring 28 abuts on an end of the piston rod 23 in the clamp device main body cylinder 22, and the piston rod 23 always projects from the clamp device main body cylinder 22, and the end surface 25 of the clamp device main body cylinder 22 and the inner surface 26 of the disk 24 are moved. It is urged to open. A stopper 29 determines the width of the nip surface gap 27. Piston 30 integral with piston rod 23
One side is an air chamber 31, and an air hose 32 connected to a pressure source (not shown) is opened.

Accordingly, the end face 25 and the inner face 26 are normally open due to the elastic force of the spring 28, but when the pressure fluid is pressed into the air chamber 31, the two faces 25 and 26 are closed, and the elastic yarn Y
Nip.

A gutter-shaped guide 33 having a U-shaped cross section is provided so as to cover about the front half of the outer peripheral surface of the clamping device main body cylinder 22. The gutter-shaped guide 33 has a shape in which the upper end is enlarged and the lower end is narrowed, and an air jet nozzle 34 for jetting compressed air inward of the gutter-shaped guide 33 is provided at the upper end. The air injection nozzle 34 is fixed by selecting a position and a posture at which a high-speed air flow flowing in the direction of the elastic yarn supply unit 7 on the clamp device main body cylinder 22 can be blown to the elastic yarn Y. In addition, the supply unit 7 reliably and efficiently puts the elastic yarn on the air flow.
The gutter-shaped guide 33 performs an action for flowing in the direction.

The device 3 of the present invention can be used for supplying the elastic yarn 2 to a supply target such as another sliver or a yarn, and is not particularly limited to the production of a core yarn described below.

Next, the automatic supply of the elastic yarn by this device will be described. All operations are automatically performed under the control of a control device (not shown).

When the core yarn is being spun normally, the elastic yarn package 20 is in pressure contact with the pay-out roller 10, and the yarn presser roller 17 is lightly pressed in contact with the pay-out roller 10. Package 20 is a rotating feeding roller
10, the elastic yarn is fed out between the feeding roller 10 and the yarn pressing roller 17. The clamp device 4 is in a state where the working air in the air chamber 31 of the clamp device main body cylinder 22 is OFF. As a result, the piston 30 and the piston rod 23 fixed thereto move forward by the restoring force of the spring 28 until the piston 30 comes into contact with the stopper 29, and keep the disk 24 away from the clamp device main body cylinder 22. I have. As described above, the elastic yarn Y runs between the disk 24 and the clamp device main body cylinder 22. The air injection nozzle 34 does not eject compressed air. As described above, the elastic yarn Y is fed out of the package 20 and taken up by the front roller 6. Feeding roller 10
Is slightly slower than the rotation speed of the front roller 6, and the elastic yarn Y is pulled in a state of being pulled three to four times.

When a slab catcher (not shown) detects a thread breakage or the like from the normal operation state, working air is supplied from an air hose 32 to an air chamber 31 of a cylinder 22 of the elastic thread clamp device 4, and a piston 30 and a piston rod are provided. 23 is retracted against the force of the spring 28 to bring the inner surface 26 of the disk 24 into close contact with the end surface 25 of the cylinder 22 of the clamping device main body. As a result, the elastic yarn Y during traveling is clamped between the two surfaces. After being clamped, the elastic yarn Y which is continuously pulled by the rotating front roller 6 is torn between the clamp position 4 and the front roller 6. On the other hand, the cylinder 18 operates simultaneously with the elastic yarn clamp device 4 to rotate the rotating arms 14 and 15, and the package separating plate 16 is inserted between the package 20 and the feeding roller 10 to stop the rotation of the package 20, Thread press roller 17
From the feeding roller 10. Thus, the feeding of the elastic yarn Y is stopped, and the elastic yarn Y is stretched and stretched between the package 20 and the elastic yarn clamp device 4.

Thereafter, when the yarn splicing by the yarn splicing device is started, the air injection nozzle 34 is operated to perform air injection while the yarn end clamp by the elastic yarn clamp device 4 is maintained. The high-speed air flow generated by the injection obliquely collides with the elastic yarn Y above the clamped yarn end, and then flows through the space surrounded by the gutter-like guide 33 toward the front roller 6,
The elastic yarn Y is pulled in the direction of the front roller 6. For this reason, the cylinder 20 is turned off immediately after the start of the air injection, and the package separating plate 16 is retracted, so that the package 20 is brought into contact with the pay-out roller 10 and the thread press roller 17 is brought into pressure contact with the pay-out roller 10 so that the feeding device 3 is pressed. Is returned to the feeding state, the elastic yarn Y between the package 20 and the clamp device 4 is loosened (tensile force is released), and the elastic yarn Y is applied as shown in FIG. Are fed in the direction of the front roller 6 in a J-shape with the yarn end clamped. And
When the bent end portion 35 of the elastic yarn Y reaches the front roller 6 and reaches the nip point of the roller 6, the package 20
The take-up of the elastic yarn Y that has been paid out from is started. The elastic yarn Y on the yarn end side fixed by the clamp device 4 is immediately cut off. On the other hand, the yarn connected to the package 20 is pulled by the front roller 6 while being in contact with the peripheral surface of the disk 24 as shown by a solid line in FIG.
Thereafter, the air injection is stopped, the cylinder working air is turned off, and the disk 24 of the clamp device 4 is separated from the clamp device main body cylinder 22. As a result, the elastic yarn Y becomes circular as shown by a two-dot chain line in FIG. It enters between the plate 24 and the cylinder 22 of the clamping device main body, and returns to a supply state in which clamping is possible when the yarn breaks.

FIG. 4 shows the timing of the above operation.

[0021]

According to the present invention, when the operation is restarted after the yarn breakage, the elastic yarn can be automatically fed into the elastic yarn supplying section, so that not only the labor saving is achieved but also the core yarn spinning can be completely automated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the clamp device 12 in FIG.

FIG. 3 is an explanatory diagram of automatic elastic yarn feeding in the embodiment of FIG. 1;

FIG. 4 is a timing chart showing each next operation timing of the device of the present invention.

FIG. 5 is a schematic side view showing a running state of an elastic yarn Y.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic thread supply device 3 Elastic thread feeding device 4 Elastic thread clamp device 6 Front roller 7 Elastic thread supply unit 10 Feeding roller 14, 15 Rotating arm 16 Package isolation plate 17 Thread holding roller 33 Gutter-shaped guide 34 Air jet nozzle

Claims (2)

(57) [Claims] An elastic yarn clamp device is provided between an elastic yarn feeding device and an elastic yarn supply unit, and an air stream is blown toward the elastic yarn supply unit toward the elastic yarn clamped by the clamp device. An elastic yarn supply device characterized by having an air supply device capable of being installed. 2. An elastic yarn clamper provided between an elastic yarn feeder and an elastic yarn supply unit clamps an elastic yarn, and the elastic yarn clamped by the air supply device to the elastic yarn supply unit. A method of supplying an elastic yarn, comprising blowing an air stream in a direction to supply an elastic yarn to an elastic yarn supply unit.