JPH0572976U - Spinning equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the twist applied to the fiber bundle by the swirling airflow from propagating to the fiber bundle supply side without providing a member for disturbing the air flow on the inlet side. [Structure] A rotating or non-rotating hollow spindle in which an anti-twisting guide 20 is arranged inside an inlet side, and a nozzle block 2 having a nozzle 3 for ejecting a swirling air flow toward a downstream side slightly separated from an inlet 6a thereof. ing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for producing a spun yarn by twisting a non-twisted short fiber bundle drafted by a drafting device by applying a swirling air flow to twist the bundle.

[0002]

[Prior Art]

 The present applicant has previously proposed a pneumatic spinning device as shown in FIG. 2 for producing a real twist spun yarn, and has already filed a separate application (Japanese Patent Application No. 3-29904 etc.).

The device has a rotating or non-rotating hollow spindle 6 and a guide member 5 projecting toward the inlet 6a toward its tip, and jets a swirling airflow from a nozzle 3 toward the spindle inlet 6a. It is a spinning device that twists the fiber bundle that has exited the draft device.

[0004]

[Problems to be solved by the device]

 In the conventional spinning device described above, the guide member 5 that prevents the twist from propagating to the fiber bundle supply side during the yarn forming process is positioned inside the nozzle block 2 while being supported by the guide member support 4. Therefore, the action of the air flow ejected from the nozzle 3 disturbs the flow of the air flowing into the device, which causes the reduction of the uniformity of the yarn to be manufactured. Further, the guide member support body 4 is also an obstacle to threading.

According to the present invention, a spinning device capable of preventing the twist applied to the fiber bundle by the swirling airflow from propagating to the fiber bundle supply side without providing a member for disturbing the air flow on the inlet side. Is intended to provide.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the spinning device of the present invention ejects a rotating or non-rotating hollow spindle in which a twist guide is arranged inside the inlet side and a swirling airflow toward the downstream slightly away from the inlet. And a nozzle block having nozzles.

[0007]

[Work]

 In the spinning device configured as described above, the fiber bundle exiting the draft device is drawn into the device by the action of the air flow ejected from the nozzle, and the front ends of all the fibers of the fiber bundle are formed into yarn. It is drawn by the emerging fiber bundle and guided into the spindle. Further, the rear end side of the fiber is reversed from the spindle inlet and separated into each fiber. The separated fibers at the rear end are exposed to the swirling airflow ejected from the nozzle, and as the yarn travels, they are spirally wound around the fiber bundles that are being formed into the yarn, and become spun yarn in the form of a real twist. At that time, the yarn in the process of forming the yarn is wound around the anti-twist guide to prevent the twist from propagating to the upstream side.

[0008]

【Example】

 The spinning device of the present invention will be described with reference to FIG.

This spinning device includes a nozzle block 2 having a nozzle 3 arranged inside a casing 1 following a draft device, and a rotary spindle 6 having an inlet side inserted into the casing 1 and having a twist guide 20 inside. It is composed of

The spindle 6 is surrounded by three rollers 7, 8 and 9 (the roller 9 is on the front side of FIG. 1 and not shown) and is circumscribed externally, and one of them is a drive shaft. It's a roller. A fiber bundle passage 10 is formed through the center of the spindle 6, the outer diameter of the inlet 6a is sufficiently small, and the portion following the inlet 6a is a conical portion 6b whose outer diameter increases toward the downstream side. .

On the inlet side of the fiber bundle passage 10 of the spindle 6, a twist guide supporting body 21 that supports the twist guide 20 is fixed to the center. A thread passage hole 21a is formed at a position off the center of the twist guide support 21.

The twist guide 20 is needle-shaped, and its tip faces the spindle inlet 6a. The yarn in the process of being spun is wound around this twisting guide 20 once or twice, thereby stopping twisting, that is, preventing the twist from propagating to the fiber bundle supply side.

A portion of the casing 1 that covers the spindle 6 is provided with a bush 11 to form a small-diameter cylindrical hollow chamber 12 in the vicinity of the spindle inlet 6a. The portion following the hollow chamber 12 is a conical hollow that opens at a large angle. It is room 13. In front of the small-diameter hollow chamber 12, the nozzle block 2 forms a cylindrical fiber bundle passage 19 having a diameter slightly larger than the tip diameter of the spindle 6. In front of the conical hollow chamber 13, an annular hollow chamber 14 and a tangential air escape hole 15 following it are formed.

Inside the casing 1, a hollow air reservoir 16 is formed between the casing 1 and the nozzle block 2. The nozzle block 2 is formed with four air injection nozzles 3 which are in communication with the air reservoir 16 and face downstream slightly away from the inlet 6 a of the spindle 6 and are tangential to the hollow chamber 12. An air hose 18 is connected to the air reservoir 16 through a hole 17. The direction of the nozzle 3 is set to be the same as the rotation direction of the spindle 6.

The compressed air supplied from the hose 18 flows into the air reservoir 16 and then is ejected from the nozzle 3 into the hollow chamber 12 to generate a high-speed swirling airflow in the vicinity of the spindle inlet 6a. After swirling in the hollow chamber 12, this air flow diffuses outward while swirling in the conical hollow chamber 13, is guided to the escape hole 15 and is discharged. At the same time, this air flow produces a suction air flow which flows into the hollow part of the casing 1 from the nip point of the front roller.

In the spinning device configured as described above, the fiber bundle drafted by the draft device is drawn into the casing 1 from the fiber bundle passage 19 of the nozzle block 2 by the action of the air flow ejected from the nozzle 3. The front ends of all the fibers of the fiber bundle are drawn into the spindle by being pulled by the fiber bundle being formed into the yarn. Further, the rear end side of the fiber is inverted from the spindle inlet 6a and separated into each fiber. The separated fibers at the rear end are exposed to the swirling airflow ejected from the nozzle 3, and as the yarn travels, the fibers are spirally wound around the fiber bundle that is being formed into yarn, and become spun yarn in the form of real twist. . At that time, the twist guide 20 blocks the propagation of the twist to the upstream side in the yarn forming process.

The spindle 6 assists in twisting the yarn, and can be manufactured depending on the yarn even if the spindle 6 does not rotate. Therefore, the spindle 6 need not rotate at all.

[0018]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

That is, since there is no member on the inlet side that disturbs the flow of air and fiber bundles, it is possible to increase the uniformity of the manufactured yarn. Also, threading work has become easier.

[Brief description of drawings]

FIG. 1 is a sectional view of a spinning device of the present invention.

FIG. 2 is a sectional view of a conventional spinning device.

[Explanation of symbols]

 2 Nozzle block 3 Nozzle 6 Spindle 6a Spindle inlet 20 Twist guide

Claims (1)

[Scope of utility model registration request] 1. A spinning device comprising a rotating or non-rotating hollow spindle in which a twist guide is arranged inside an inlet side, and a nozzle block having a nozzle for ejecting a swirling airflow toward a downstream side slightly away from the inlet. ..