JPH0620465U - Spinning equipment - Google Patents

Abstract

(57) [Summary] [Object] To provide a pneumatic spinning device suitable for long fibers by increasing the amount of wound fibers. A main body composed of a nozzle block (2) having a nozzle for causing a swirling air flow to act on a fiber bundle exiting a draft device, a rotating or non-rotating hollow spindle, and a guide member (5) projecting with its tip toward the inlet thereof. And a plurality of fiber bundle supply pipes 20 fixed to the inlets thereof and supplying a plurality of separated fiber bundles while maintaining the separated state up to near the swirling air flow action position.
Has become

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for producing a spun yarn by twisting an untwisted short fiber bundle drafted by a drafting device by applying a whirling air current to the yarn, and particularly to a spinning device for long fibers.

[0002]

[Prior art]

 The applicant first proposed a pneumatic spinning device suitable for producing a real twist spun yarn mainly for short fibers such as cotton, and has already filed a separate application (Japanese Patent Application No. 3-29904).

The device has a rotating or non-rotating hollow spindle and a guide member projecting its tip toward the inlet thereof, and a swirling airflow is ejected toward the inlet of the spindle so that the fiber bundle exits the draft device. It is a spinning device that twists.

[0004]

[Problems to be solved by the device]

 The above-described conventional spinning device is excellent for short fibers because it has an extremely large amount of wound fiber and is capable of producing a yarn that is comparable in appearance and tenacity to a ring yarn. In the case of spinning the continuous fiber, a bundled spun yarn having a large number of core fibers and a small number of wound fibers is manufactured.

An object of the present invention is to provide a pneumatic spinning device suitable for long fibers by increasing the amount of wound fibers.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the spinning device of the present invention has a nozzle block having a nozzle that causes a swirling air flow to act on a fiber bundle that has exited a draft device, a rotating or non-rotating hollow spindle, and a tip directed toward the inlet. And a plurality of fiber bundle supply pipes that are fixed to the inlet part of the main body and that feed the plurality of separated fiber bundles in a separated state up to near the swirling air flow action position. is there.

[0007]

[Work]

 In the spinning device configured as described above, each fiber bundle that exits the draft device and is supplied from the plurality of fiber bundle supply pipes is close to its operating position by the action of the swirling airflow ejected from the nozzle. The fibers are drawn in a state of being parallel to each other while being drafted, and the front ends of all the fibers of the fiber bundle are drawn from the periphery of the guide member to the fiber bundle being formed into a yarn and inside the spindle. Be led to. 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 runs, they are spirally wrapped around the fiber bundle that is forming into a real twisted spun yarn. Become.

[0008]

【Example】

 An embodiment of a spinning device of the present invention will be described with reference to FIGS. 1 to 3.

This spinning device is fixed to the spinning device main body shown in FIG. 1 and the inlet portion of the nozzle block 2 thereof, and supplies a plurality of fiber bundles (coarse yarns) one by one and supplies them (FIG. 2 and FIG. 3), and is arranged next to the draft part including the back roller, the middle roller having an apron, and the front roller.

First, the main body of the spinning device will be described with reference to FIG.

This is a nozzle block 2 having a nozzle 3 arranged inside a casing 1, a guide member support body 4 located inside the nozzle block 2 having a guide member 5, and an inlet side inserted into the casing 1. It consists of a rotating spindle 6.

The spindle 6 is circumscribed and surrounded by three rollers 7 (one of which is on the front side in FIG. 1 and not shown). One of them is a drive roller, which can obtain a much higher speed of 50,000 to 200,000 rpm than that of the one in which the spindle 6 is directly rotated by a belt (30,000 rpm).

A fiber bundle passage 8 is formed through the center of the spindle 6, and the center of the passage 8 and the respective centers of the casing 1 are located on the same straight line that coincides with the traveling path of the fiber bundle. . The outer diameter of the inlet 6a of the spindle 6 is sufficiently small, and the portion following the inlet 6a is a conical portion 6b whose outer diameter increases toward the downstream side.

The portion of the casing 1 that covers the spindle conical portion 6b is a tapered portion 1a that opens in a trumpet shape along the outer diameter of the spindle conical portion 6b, and is formed between the spindle conical portion 6b and the annular portion. A space 9 is formed.

A nozzle block 2 is fitted on the inlet side of the casing 1, and a fiber bundle passage 10 is formed inside the nozzle block 2. The fiber bundle passage 10 has a narrowed middle portion.

Inside the casing 1, a hollow air reservoir 11 is formed between the casing 1 and the nozzle block 2. The nozzle block 2 is formed with four air jet nozzles 3 which are in communication with the air reservoir 11 and face downstream slightly away from the spindle inlet 6a and which are tangential to the fiber bundle passage 10. An air hose 13 is connected to the air reservoir 11 through a hole 12. The direction of the nozzle 3 is set to be the same as the rotation direction of the spindle 6.

On the downstream side of the annular space 9 of the casing 1, an annular hollow chamber 14 and a tangential air escape hole 15 following it are formed. An air suction pipe is connected to the air escape hole 15.

The compressed air supplied from the hose 13 flows into the air reservoir 11 and then is ejected from the nozzle 3 into the annular space 9 of the casing 1 to generate a high-speed swirling airflow in the vicinity of the spindle inlet 6a. This air flow, after swirling inside the annular space 9, is guided from the hollow chamber 14 to the escape hole 15 and discharged. At the same time, this air flow generates a suction air flow that flows from the nip point of the front roller into the hollow portion of the casing 1 via the supply section.

A gap 16 exists between the nozzle block 2 and the guide member support 4 and serves as a guide passage for the fiber bundle. Further, in the longitudinal direction of the guide member support body 4, a fine hole is formed which coincides with the center line of the passage 8 of the spindle 6, and the pin-shaped guide member 5 is inserted into the fine hole.

The guide member 5 protrudes from the pores of the guide member support 4 and has its tip free, and faces the spindle inlet 6a. Its diameter is smaller than the passage diameter of the spindle inlet 6a, and the tip is formed with a smooth curve.

In the figure, the tip of the guide member 5 is shown at a position slightly entering the inside of the passage 8 from the spindle inlet 6a. This state is the most preferable, and the yarn produced is also the most ring yarn. It has a similar appearance. However, depending on the conditions, it is possible to take a position away from the end face of the inlet 6a, and it is possible to manufacture a yarn having an appearance similar to that of a ring yarn. These yarns are comparable in strength properties to ring yarns.

Next, the split supply unit for a plurality of fiber bundles will be described.

The divided supply unit shown in FIG. 2 is composed of two (any number) fiber bundle supply pipes 20 fixed to the inlet of the nozzle block 2.

As shown in FIG. 2 (2), the base of the guide member support 4 is fixed to the nozzle block 2 and divides the internal space into two, forming two fiber bundle passages 16. ing. However, the fiber bundle passage 16 on the downstream side has an annular shape. Therefore, the fiber bundles supplied from the plurality of independent fiber bundle supply pipes 20 are maintained in the parallel state at the time of drafting up to the annular fiber bundle passage on the downstream side of the guide member supporting body 4, and the rear end is The behavior of the unconstrained fibers is uniform, and the fibers are smoothly separated and swirled.

The distance from the nip point of the front roller of the draft part to the spindle inlet 6a is set to be slightly longer than the average fiber length of the supplied fiber bundle.

The divided supply section shown in FIG. 3 is housed with a conical cylindrical body 17 fixed to the inlet section of the nozzle block 2 and a space to form an annular fiber bundle passageway 19 therein, and a gas is provided at the tip. The fiber bundle introduction body 18 to which the id member support body 4 is fixed, and two (any number) fiber bundle supply pipes 20 communicating with the fiber bundle passage 19 are provided.

As shown in the cross-sectional view of FIG. 3B, the fiber bundle introducing body 18 is fixed to the conical cylindrical body 17 at the fiber bundle inlet, and that portion is a mounting portion of the fiber bundle supply pipe 20. Closed, except for. Eventually, when the fiber bundle supply pipe 20 is introduced into the fiber bundle passage 19, the entire circumference of the fiber bundle introducing body 18 serves as a yarn path, and as shown in FIG. 2, a plurality of independent fiber bundles are provided. The fiber bundle supplied from the supply pipe 20 is maintained in a parallel state during drafting to a position very close to the twisted portion, and the fibers are smoothly separated and swirled.

The distance from the nip point of the front roller of the draft part to the spindle inlet 6a is the same as that shown in FIG.

In the spinning device configured as described above, a plurality of fiber bundles that have exited from the front roller of the draft device are individually separated by the action of the swirling air flow ejected from the nozzle 3 to near their operating positions. Be drawn in. The front ends of all the fibers of the fiber bundle are drawn from the periphery of the guide member 5 into the fiber bundle being formed into a yarn and guided into the spindle. 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, they are spirally wound around the fiber bundle that is being formed into yarn, and become spun yarn in the form of a real twist. . At this time, the guide member 5 functions as a so-called pseudo core that prevents the propagation of twist in the yarn forming process or temporarily acts as a substitute for the central fiber bundle. It acts to prevent the formation of untwisted core fiber bundles, which appears remarkably in the above, and to form a yarn from only the wound fibers.

The example of rotating the spindle 6 has been described above. However, the spindle 6 is for assisting in twisting the yarn, and since the spindle 6 can be manufactured depending on the yarn without rotation, the spindle 6 is It does not necessarily have to rotate.

[0031]

【The invention's effect】

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

That is, since a plurality of fiber bundle supply pipes for supplying a plurality of separated fiber bundles in a separated state to the vicinity of the swirling air flow action position are fixed to the inlet of the spinning device main body, the fiber rear end The behavior is adjusted, and the fibers are smoothly separated and swirled. Therefore, as in the case of cotton yarn spinning, it is possible to produce a yarn having an extremely large amount of wound fiber and having a comparable appearance and tenacity to a ring yarn.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a spinning device main body.

2A and 2B are a vertical sectional view and a horizontal sectional view at the arrow position of the divided supply unit.

FIG. 3 is a vertical sectional view of (1) of another divided supply section, (2)
[Fig. 6] is a cross-sectional view at the arrow position.

[Explanation of symbols]

 1 Casing 2 Nozzle Block 3 Nozzle 4 Guide Member Support 5 Guide Member 6 Spindle 6a Spindle Inlet 20 Fiber Bundle Supply Pipe

Claims (1)

[Scope of utility model registration request] 1. A main body comprising a nozzle block having a nozzle for causing a swirling air flow to act on a fiber bundle exiting a draft device, a rotating or non-rotating hollow spindle, and a guide member protruding toward its inlet end. And a spinning device comprising a plurality of fiber bundle supply pipes, which are fixed to the inlet of the fiber bundle and supply a plurality of separated fiber bundles while maintaining the separated state up to near the swirling air flow action position.