JPH04118467U - spinning equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To smooth the flow of fibers and air in a pneumatic spinning device. [Structure] A nozzle block 2 having a nozzle 3 that applies a swirling airflow to a fiber bundle exiting a draft device, a hollow spindle 6 that rotates or remains stationary, and a guide member support 4 fixed within the nozzle block 2. The guide member 5 is attached to the guide member support 4 with its tip protruding toward the spindle inlet 6a, and the fiber bundle and air flow path is formed by a surface along the yarn traveling direction and a tapered surface 1a, 2a, 2b, 4a, It consists of 6b.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea creates swirling air flow on the untwisted short fiber bundles drafted by the drafting device. The present invention relates to an apparatus for producing spun yarn by applying and twisting the yarn.

0002

[Conventional technology]

The applicant previously proposed a pneumatic spinning device for producing real twisted spun yarn as shown in Figure 2. A separate application has already been filed.

0003 The device includes a nozzle 18 that applies a swirling airflow to the fiber bundle exiting the draft device. The nozzle block 17 has a fiber bundle passage 20, and has a drive roller 21, etc. A spindle 19 rotated by a moving device (it does not need to be rotated) and a nozzle Guide member support 22 fixed within lock 17 and forward to spindle inlet 19a. A guide member 23 that protrudes toward the end and is attached to the guide member support 22. It is something that will become true.

0004

[Problem that the idea aims to solve]

The conventional spinning device described above has an inner wall of the nozzle block 17 and a guide member support 22. There are irregularities in the fiber bundle and the air flow path formed between the fiber bundle and the outer surface. Also, There is a large difference in the diameters of the spaces inside and outside the nozzle block 17. Therefore, a smooth sky The flow of air is obstructed, reducing the performance of the device.

[0005] This idea was developed to reduce the amount of air around the nozzle block in such pneumatic spinning equipment. The purpose is to smooth the flow.

[0006]

[Means to solve the problem]

In order to achieve the above purpose, the spinning device of this invention A nozzle block with a nozzle that applies a swirling airflow to the bundle, and a rotating or stationary A hollow spindle, a guide member support fixed in a nozzle block, and a spindle. The guide member is attached to the guide member support and protrudes with the tip toward the inlet of the needle. As a result, the flow path for fiber bundles and air is composed of a surface along the yarn traveling direction and a tapered surface. This is what I did.

[0007]

[Effect]

In the spinning device configured as described above, the fiber bundle exiting the draft device is It is drawn into the device by the action of the air stream ejected from the nozzle, and all of the fiber bundles are The front end of the fiber is pulled from around the guide member into the fiber bundle that is forming into a thread. guided into the spindle. Also, the rear end side of the fiber is reversed from the spindle entrance. It is separated into each fiber. The separated fibers at the rear end are exposed to swirling air ejected from the nozzle. As the yarn travels through the flow, a spiral forms around the fiber bundle that is forming into the yarn. The fibers are wound into a shape to form a real twisted spun yarn. In the manufacturing process of this spun yarn, fiber bundles and air flows smoothly through the device.

[0008]

【Example】

[0009] An embodiment of the spinning device of this invention will be described with reference to FIG.

0010 This spinning device consists of a back roller, a middle roller with an apron, and a front roller. It is placed next to the draft part consisting of a A nozzle block 2 having a nozzle 3 and a guide member 5 fixed therein. a guide member support 4 having a Consists of 6 handles.

[0011] The spindle 6 has three rollers 7 (one on the near side in Figure 1 and not shown). ) is surrounded by a circumscribed bearing. One of them is a driving roller, 50,000 to 20,000 rpm compared to one in which the spindle 6 is directly rotated by a belt (30,000 rpm) Much higher rotation speeds of up to 10,000 rpm can be obtained.

0012 A fiber bundle passage 8 is formed through the center of the spindle 6. and the centers of casing 1 are both located on the same straight line that coincides with the running path of the fiber bundle. ing. The outer diameter of the inlet 6a of the spindle 6 is sufficiently small, and the part following the inlet 6a is , a conical portion 6b whose outer diameter increases toward the downstream side.

[0013] The part of the casing 1 that covers the spindle conical part 6b is the spindle conical part 6. There is a tapered part 1a that opens in a trumpet shape along the outer diameter of the spindle cone. An annular space 9 is formed between it and the shaped portion 6b.

[0014] A nozzle block 2 is fitted into the inlet side of the casing 1, and its interior A fiber bundle passage 10 is formed therethrough. This fiber bundle passage 10 has a tapered portion 2 The middle part is narrowed by a, and continues downstream to the tapered part 1a of the casing 1. A tapered portion 2b is formed.

[0015] A hollow air reservoir 11 is formed inside the casing 1 between it and the nozzle block 2. are doing. The nozzle block 2 is connected to the air reservoir 11 and has a spindle inlet 6a. 4, facing downstream slightly away from the fiber bundle passage 10 and tangentially to the fiber bundle passage 10. An air injection nozzle 3 is formed, and an air hose is connected to the air reservoir 11 through a hole 12. 13 are connected. The direction of the nozzle 3 is set to be the same as the rotation direction of the spindle 6. It has been done.

[0016] On the downstream side of the annular space 9 of the casing 1, there is an annular hollow chamber 14 and a tangent line thereto. An air vent hole 15 is formed in the direction. This air vent hole 15 has an air suction pipe. are connected.

[0017] Compressed air supplied from the hose 13 flows into the air reservoir 11 and then passes through the nozzle 3. is ejected into the annular space 9 of the casing 1, and swirls at high speed near the spindle inlet 6a. Create airflow. After swirling inside the annular space 9, this air flow flows into the hollow chamber 14. The liquid is then guided to the relief hole 15 and discharged. At the same time, this airflow - generates a suction air flow that flows into the hollow part of the casing 1 from the nip point of the .

[0018] The guide member support 4 has a cylindrical shape with a conical portion 4a protruding from one end. One side is cut out to form a gap 16 between the nozzle block 2 and the guide for the fiber bundle. It is used as a passageway. Further, in the longitudinal direction of the guide member support 4, a passage of the spindle 6 is provided. A pore that coincides with the center line of the channel 8 is drilled, and a pin-shaped guide member 5 is inserted into the pore. I'm passing through.

[0019] The guide member 5 protrudes from the pore of the guide member support 4 and has its tip in a free state. and faces the spindle inlet 6a. Its diameter is determined by the passage of the spindle inlet 6a. It is smaller than the diameter of the tube and has a smooth curved tip.

[0020] In the figure, the tip of the guide member 5 is slightly inserted into the passage 8 from the spindle inlet 6a. This is the most preferable position, and the yarn produced is also It has an appearance that is most similar to ring thread. However, depending on the conditions, the entrance 6a A thread that can be positioned away from the end face and has an appearance similar to a ring thread. can be manufactured. These yarns also have stronger properties compared to ring yarns. It's comparable.

[0021] In the spinning device configured in this way, the front roller of the draft device The fiber bundle exiting from the nozzle block 2 is moved by the action of the air flow ejected from the nozzle 3. The fiber bundle is drawn into the casing 1 through the gap 16 between the fiber bundle and the guide member support 4. The front ends of all the fibers are drawn from around the guide member 5 into the fiber bundle that is being formed into a yarn. It is pulled and guided into the spindle. Further, the rear end side of the fiber is connected to the spindle inlet 6a. The fibers are then inverted and separated into individual fibers. The separated fibers at the rear end are removed from nozzle 3. Fiber bundles that are being formed into yarn as the yarn travels, exposed to the swirling airflow that blows out. The yarn is wound spirally around the yarn to form a real twisted yarn. Guide member 5 at this time is used to prevent the propagation of twist during the yarn formation process or to temporarily replace the central fiber bundle. It acts as a so-called pseudo-core, which is noticeable in conventional air-bound spun yarn. This prevents the formation of untwisted core fiber bundles and virtually forms yarns using only the wrapped fibers. It is something that does work.

[0022] Examining the characteristics of the yarn produced here, we found that the conventional spinning device shown in Figure 2 The strength and spinning speed were limited to 11, 5g/tex, and 100m/min, respectively. However, with the spinning device of this invention, the spinning speed is 12.5 g/te at a spinning speed of 200 m/min. We were able to produce a yarn with a tenacity of x. Also, the strength is slightly lower, but it is 300 High speed spinning of m/min is also possible.

[0023] Above, we have explained an example of rotating the spindle 6, but the spindle 6 twists the yarn. It assists hanging, and depending on the thread, it can be manufactured even if it does not rotate. Therefore, the spindle 6 does not necessarily need to rotate.

[0024]

[Effect of the idea]

This idea is structured as explained above, so the following be effective.

[0025] In other words, the yarn has an extremely large amount of wrapped fibers and is comparable to ring yarn in terms of appearance and strength. In addition to being able to manufacture fiber bundles and air flow paths in the yarn traveling direction, Since it is composed of a parallel surface and a tapered surface, it is possible to spin at a speed more than twice that of conventional methods. Moreover, the strength of the thread can be further increased.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a spinning device of this invention.

FIG. 2 is a sectional view of a spinning device as a prior example.

[Explanation of symbols] 1 Casing 1a Tapered part of casing 2 Nozzle block 2a Tapered part of nozzle block 2b Tapered part of nozzle block 3 nozzle 4 Guide member support 4a Conical part of guide member support 5 Guide member 6 Spindle 6a Spindle inlet 6b Spindle conical part

Claims (1)

[Scope of utility model registration request] [Claim 1] A nozzle block having a nozzle that applies a swirling airflow to a fiber bundle exiting a draft device, a rotating or stationary hollow spindle, a guide member support fixed within the nozzle block, and a guide member support fixed to the spindle inlet. A spinning device consisting of a guide member whose tip is protruded and attached to a guide member support, and in which a flow path for fiber bundles and air is formed by a surface along the yarn traveling direction and a tapered surface.