JPH04131664U - spinning equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the cotton drop rate in pneumatic spinning equipment. [Structure] A nozzle block 2 having a nozzle 3 that applies a swirling airflow to a fiber bundle exiting a draft device, a hollow fixed spindle 6, a hollow rotating spindle 7 inserted therein with a gap, and a nozzle. Consists of a guide member support 4 fixed within the block 2, and a guide member 5 attached to the guide member support 4, which protrudes with its tip toward the rotating spindle inlet 7a, and sucks air from the gap 10 between both spindles. I'll do what I do.

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 21 that applies a swirling airflow to the fiber bundle exiting the draft device. The nozzle block 20 has a fiber bundle passage 23, and has a drive roller 24, etc. A spindle 22 (which does not have to be rotated) rotated by a moving device and a nozzle A guide member support 25 fixed in the lock 20 and a guide member support 25 fixed in the lock 20 and A guide member 26 protrudes toward the end and is attached to the guide member support 25. It is something that will become true.

0004

[Problem that the idea aims to solve]

The above-described conventional spinning device is characterized by the fact that the fluff is discharged from the air vent hole 27 together with the air flow. The problem is that there are many The cotton drop rate, i.e., the ratio of the wind cotton to the supplied fiber. The proportion of carbon dioxide is as high as 8 to 15%, which is uneconomical.

[0005] This invention aims to reduce the cotton drop rate in such pneumatic spinning equipment. It has been the target.

[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 swirling airflow to the bundle, and a hollow fixed spin a hollow rotating spindle inserted with a gap therein, and a nozzle block. The guide member support is fixed in the rack and protrudes with the tip toward the rotating spindle inlet. It consists of a guide member attached to the ejecting guide member support, and is connected between both spindles. It is designed to suck air through the gaps.

[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 a rotating spindle. In addition, the rear end side of the fiber is connected from the rotating spindle entrance. It is inverted and extended out of the fixed spindle and separated into individual fibers. Separation of the rear end The fibers are exposed to the swirling airflow ejected from the nozzle, and as the thread travels, they are shaped into threads. The yarn is wound spirally around the fiber bundle that is being formed to form a real twisted spun yarn. Ma In addition, air is sucked from the gap between both spindles, causing the floating fibers to move onto the rotating spindle. It is attracted to the spindle entrance side and incorporated into the fiber bundle that is being formed into a thread.

[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 element support 4 with a fixed spindle 6 fixed in the casing 1; The inlet side is connected to the rotating spindle 7 inserted into the fixed spindle 6. Ru.

[0011] The rotating spindle 7 has three rollers 8 (one on the near side in Figure 1 and not shown). ) is surrounded by a circumscribed bearing. One of them is the drive roller. 5, compared to a system in which the rotating spindle 7 is directly rotated by a belt (30,000 rpm). It is possible to obtain much higher rotation speeds of 10,000 to 200,000 rpm.

0012 A fiber bundle passage 9 is formed through the center of the rotating spindle 7. The center and each center of casing 1 are both located on the same straight line that coincides with the running path of the fiber bundle. It is location.

[0013] The fixed spindle 6 connects the inlet 7a side of the rotating spindle 7 with an annular space 10 in between. The part following the inlet 6a is a conical part whose outer diameter increases toward the downstream side. 6b. In addition, near the attachment base of the rotating spindle 7 to the casing 1, is connected to a pipe 11 for sucking air in the annular space 10. This pa The pipe 11 may be directly connected to a suction air supply source, but the air release hole 18 described later Even if the annular space 10 is left in an air suction pipe connected to the annular space 10, the air in the annular space 10 is sucked. When the air in the annular space 10 is sucked in this way, the floating fibers are drawn into the rotating spindle inlet. It is attracted to the side 7a and incorporated into the fiber bundle being formed into a thread, which will be described later.

[0014] The part of the casing 1 that covers the fixed spindle conical part 6b is the outer part of the conical part 6b. There is a tapered part 1a that opens like a trumpet along the diameter, and there is a tapered part 1a with a conical part 6b. An annular space 12 is formed.

[0015] A nozzle block 2 is fitted into the inlet side of the casing 1, and its interior A fiber bundle passage 13 is formed therethrough. This fiber bundle passage 13 has a tapered portion 2 The middle is narrowed by a.

[0016] A hollow air reservoir 14 is formed inside the casing 1 between it and the nozzle block 2. are doing. The nozzle block 2 has a rotary spindle inlet 7 which communicates with the air reservoir 14. 4 facing downstream slightly away from a and tangentially to the fiber bundle passage 13; Two air injection nozzles 3 are formed, and the air reservoir 14 is provided with an air jet through holes 15. base 16 is connected. The direction of the nozzle 3 is the same as the rotation direction of the rotating spindle 7. It is set to one.

[0017] On the downstream side of the annular space 12 of the casing 1, there is an annular hollow space 17 and a contact area connected thereto. A linear air escape hole 18 is formed. This air vent hole 18 has an air suction pipe. are connected.

[0018] The compressed air supplied from the hose 16 flows into the air reservoir 14 and then passes through the nozzle 3. The air is ejected into the annular space 13, and high-speed swirling air is generated near the inlets 6a and 7a of both spindles. cause a flow. After swirling inside the annular space 12, this air flow flows into the hollow chamber 17. The water is then guided to the relief hole 18 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 .

[0019] 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 19 between the nozzle block 2 and the fiber bundle guide. It is used as a passageway. Further, a rotating spindle 7 is provided in the longitudinal direction of the guide member support 4. A pore that coincides with the center line of the passage 9 is bored, and a pin-shaped guide member 5 is inserted into the pore. is inserted.

[0020] 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 rotating spindle inlet 7a. Its diameter is the passage diameter of the inlet 7a. The tip is smaller and has a smooth curve.

[0021] In the figure, the tip of the guide member 5 is inserted into the passage 9 from the rotary spindle inlet 7a. The figure shows the case where the yarn is in a dry position, which is the most preferable condition for the yarn to be manufactured. Also, the appearance is closest to that of a ring thread. However, depending on the conditions, the entrance 7a It is also possible to take a position away from the end face, and it has an appearance similar to a ring thread. It is possible to produce yarn that These yarns are also comparable in strength to ring yarns. There is no difference between them.

[0022] 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 19 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 a rotating spindle. In addition, the rear end side of the fiber is attached to a rotating spindle. It inverts from the inlet 7a and extends to the fixed spindle conical part 6b and separates into each fiber. be done. The separated fibers at the rear end are exposed to the swirling airflow ejected from the nozzle 3, and the fibers are separated into yarns. As the thread runs, it wraps around the fiber bundle that is forming into a thread in a spiral pattern and becomes a fruit. It becomes a twisted spun yarn. At this time, the guide member 5 is used for the propagation of twist during the yarn forming process. The function of the so-called pseudo core, which prevents the This prevents the formation of untwisted core fiber bundles that appear prominently in conventional pneumatic bound spun yarns. In effect, the yarn is formed only by the wound fibers. Also, hard Air in the annular space 10 between the fixed spindle 6 and the rotating spindle 7 is sucked As a result, the floating fibers are taken into the rotating spindle inlet 7a side and become fibers during yarn formation. Combines into fiber bundles.

[0023]

[Effect of the idea]

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

[0024] 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 Since the floating fibers are taken into the rotating spindle inlet side, the cotton drop rate is reduced. can be done.

[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 2 Nozzle block 3 nozzle 4 Guide member support 5 Guide member 6 Fixed spindle 7 Rotating spindle 7a Spindle inlet 10 Annular space 11 Suction pipe

Claims (1)

[Scope of utility model registration request] 1. A nozzle block having a nozzle that applies a swirling airflow to a fiber bundle exiting a draft device, a hollow fixed spindle, a hollow rotating spindle inserted therein with a gap, and a nozzle block that includes A spinning device comprising a guide member support fixed to a rotating spindle, and a guide member attached to the guide member support and protruding with its tip toward the inlet of a rotating spindle, and sucks air from a gap between both spindles.