JP2002138329A - Yarn-threading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn-threading device capable of surely threading the yarn into a yarn feeding path without deteriorating quality of the yarn. SOLUTION: This yarn threading device S is composed of a head part S1, a compressed air-injecting part S2, and a space part A which is positioned between both of the above parts and opened to the outside, wherein a hollow guide 13, plural guide plates 14a, 14b, 14c which are arranged at predetermined intervals and have yarn inserting-openings 14a', 14b', 14c', respectively, interval- ensuring cylinders 15, and a connecting disc 19 are integrally formed, for example, by aluminum die casting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threading device for passing a filament from a large-diameter inlet to a small-diameter outlet using compressed air.

[0002]

2. Description of the Related Art The present applicant has filed Japanese Patent Application No.
No. 106897 shows an example of a threading device. The threading device is directed toward a front roller of a draft device from a rear end of a spindle by blowing compressed air from behind a spindle member during a splicing operation. We have proposed a spinning device that performs threading and splicing.

[0003] The spinning apparatus described above will be outlined with reference to FIG.

[0004] Reference numeral 1 denotes a nozzle member having a plurality of air injection holes 1a in the tangential direction of the inner peripheral surface. A fiber introduction hole 1b 'is formed on the front roller 2 side of the nozzle member 1 and a guide member 1 is provided. A fiber introduction block 1b having a pin 1b "is attached.

[0005] Reference numeral 3 denotes a spindle member, which has a cylindrical outer cylindrical body 3a having an appropriate number of through-holes 3a 'and a hollow spindle 3b mounted thereon and fitted to the outer cylindrical body 3a. A disk-shaped lid 3c and an outer cylindrical body 3 on the opposite side of the lid 3c
a holder 3d fitted into the outer cylinder 3a, and a hole 3d 'is formed in the center of the holder 3d. 3b and a conduit 3e opposed thereto at a predetermined interval are attached. A flapper tube 3f located outside the outer cylindrical body 3a is attached to a hole 3d 'formed in the holder 3d, and a gap between the flapper tube 3f and the holder 3d is provided.
A slit 3g communicating with the conduit 3e is formed, and a compressed air supply hole 3d "communicating with the slit 3g is formed in the holder 3d. The slit 3g is connected to a compressed air supply source via a pipe (not shown). 3h
A porous filter supported by the lid 3c and the holder 3d at a predetermined distance from the outer cylinder 3a in the outer cylinder 3a.

[0006] The spindle member 3 having the above-described configuration.
Indicates that the tapered tip of the spindle 3b is the nozzle member 1
And the spindle 3b
Are arranged so that a predetermined space is formed between the outer peripheral surface of the nozzle member 1 and the inner peripheral surface of the nozzle member 1. The nozzle member 1 and the spindle member 3 constitute a spinning member in which a spun yarn generation region is formed.

The fiber introduction hole 1b 'from the front roller 2
The fiber constituting the sliver supplied to the nozzle member 1 via the guide pin 1b "is twisted by the swirling airflow ejected from the air injection hole 1a and is formed into a spun yarn y while the hollow fiber of the spindle 3b is formed. After passing through the passage 3b ', the conduit 3e, and the wrapper tube 3f, it is nipped by the delivery roller 4a and the nip roller 4b, sent out in the direction of the winding package, and wound up by a winding package (not shown).

At the time of splicing, the driving of the spinning member including the nozzle member 1 and the spindle member 3 is stopped, for example, by stopping the supply of compressed air to the air injection hole 1a. Place the tip of the seed thread. Next, compressed air is supplied to the compressed air supply hole 3d ″ of the holder 3d, and the spindle 3b is inserted into the conduit 3e through the slit 3g.
When the airflow in the direction of the spindle 3b is formed, the seed yarn arranged near the flapper tube 3f rides on the airflow in the direction of the spindle 3b, passes through the conduit 3e and the hollow passage 3b 'of the spindle 3b, and passes through the nozzle member 1 Will be inserted.
At this time, the compressed air discharged from the distal end of the conduit 3e is discharged to the outside through the filter 3h and the through-hole 3a 'of the outer cylindrical body 3a, and the compressed air supplied from the compressed air supply hole 3d "of the holder 3d. Is configured not to flow back to the conduit 3e.

As described above, after the seed yarn is inserted into the spinning member including the nozzle member 1 and the spindle member 3, the supply of the sliver is resumed, and the air injection hole 1a is restarted.
Restarts the supply of compressed air to the
Splicing is performed by entanglement of the fiber constituting the sliver with the seed yarn transported in the direction of the winding package by a delivery roller and a nip roller (not shown).

[0010]

In the above-described threading, impurities such as fly wool and trash generated in the spinning member during the normal production of spun yarn float in the spinning member and are generated. Attached to the spun yarn, or taken into the spun yarn, lowering the quality of the spun yarn,
In addition, impurities such as fly cotton and trash adhere to the filter 3h, and the compressed air discharged from the distal end of the conduit 3e during the above-described piecing operation causes the filter 3h and the outer cylindrical body 3a to pass through. After 3a ', it is no longer exhausted enough,
There is a problem in that the seeds flow backward to the conduit 3e and the seed threading to the spinning member fails.

The present invention has been made in view of the above problems, and has as its object to provide a threading device capable of reliably threading a yarn passage without deteriorating yarn quality.

[0012]

In order to achieve the above object, an invention according to claim 1 is a threading device for passing a filament from a large-diameter inlet to a small-diameter outlet using compressed air. A compressed air injection section having a yarn passage extending from the inlet to the injection port, a space portion downstream of the compressed air injection portion, and a tip portion downstream of the space portion, and the tip portion includes: A plurality of guide plates are provided at predetermined intervals and a through hole is formed in the center, and a part of the compressed air injected from the injection port through the yarn passage is removed from the space between the space and the guide plate. It is characterized in that the filament is passed from the inlet to the outlet through the thread passage, the injection port and the tip while being released outward. According to the present invention, fly waste, trash, and the like generated from the yarn are discharged from the space, and the fly waste, trash, and the like can be prevented from adhering to the generated yarn or being taken into the yarn.

The invention according to claim 2 is characterized in that the passage hole of the guide plate portion gradually decreases in diameter toward the downstream side. In the present invention, since the diameter is gradually reduced from the large diameter where the thread can be easily inserted to the distal end portion as approaching from the compressed air injection unit, the thread can be easily inserted.

The invention according to claim 3 is characterized in that a support portion is provided between adjacent guide plate portions and keeps the guide plate portions at a predetermined interval, and the guide plate portion and the support portion are integrally formed. And According to the present invention, assembling of the threading device becomes easy, and it is not necessary to perform high-precision alignment of the respective guide plate portions.

The invention according to a fourth aspect is characterized in that a connecting portion for connecting the compressed air jetting portion and the distal end portion is provided, and the guide plate portion, the supporting portion and the connecting portion are integrated. According to the present invention, assembling of the threading device is facilitated, and there is no need to perform high-accuracy alignment in the positional relationship between the injection port of the compressed air injection unit and the distal end.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the embodiments without departing from the spirit of the present invention.

FIG. 1 is a vertical sectional view showing a threading device according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the threading device of FIG.

As shown in FIG. 1, the threading device S includes a hollow threading target member 12 having a thread insertion hole 12a formed therein.
(Shown by a dashed line), a hollow guide portion 13 comprising a cylindrical portion 13a which can be brought into contact with a flange portion 13b formed at an end of the cylindrical portion 13a, and a plurality of guide plate portions 14a, 14b, 14
c, an interval securing cylinder portion 15, and a compressed air injection portion S2 composed of a soccer 16 and a guide cylinder 17, which will be described later. In addition, the hollow guide part 13 can contact the end surface of the hollow threading target member 12,
A hollow guide portion 13 and a plurality of guide plate portions 14a, 14b,
14c constitutes the distal end portion S1.

The guide plates 14a to 14c are provided side by side at a predetermined interval. As shown in FIG. 2, the guide plate portions 14a to 14c are respectively provided at the substantially central portions, and the thread conducting holes 14a ', 14b', 14
c 'is drilled.

Further, the hollow guide portion 13 and the guide plate portion 14
a, a pair of spaced-apart cylindrical portions 14d as support portions
Similarly, between the guide plate portion 14a and the guide plate portion 14b, similarly, a pair of interval securing cylinder portions 14e are formed as support portions, and the guide plate portion 14b and the guide plate portion A pair of spaced-apart cylindrical portions 14f are formed as support portions between the cylindrical portions 14f. Here, for the sake of explanation, FIG. 2 shows the hollow guide portion 13 and the guide plate portions 14a to 14a.
c, the spacing securing cylinders 14d to 14f, 15 and a connecting disk 19 described later are shown in an exploded perspective view, but in the present embodiment, all of the above members are integrally formed by, for example, aluminum die casting. .

As shown in FIG. 1, the compressed air injection unit S2
Is composed of a soccer 16 and a guide cylinder 17. The soccer 16 is connected to the above-mentioned interval securing cylinders 14 d to 14 d in the yarn passage direction via a connecting disc 19 described later.
4f, it is connected to an interval securing cylindrical portion (connecting portion) 15 longer than that of 4f. Thereby, the compressed air injection part S2 and the tip S
A space portion A is formed between the space portion 1 and the space portion A. Here, a hole 19 is provided at the center of the end of the spacing securing cylinder 15 on the side of the soccer 16.
A connecting disk portion 19 provided with "a" is provided, and the connecting disk portion 19 and the spacing securing cylindrical portion 15 are integrally formed by, for example, aluminum die casting. Further, a pair of holes 19b are formed in the connecting disk portion 19 with the hole 19a interposed therebetween. Further, the soccer 16 has a guide plate portion 14a.
A cylindrical body 16b having a first nozzle 16a extending in the direction from 1 to 14c is formed. The cylindrical body 16b is fitted into the cylindrical body 16b, and the tip is inserted into the thread insertion hole 16a 'of the first nozzle 16a. And a second nozzle 16c. And the first
An annular slit 16d is formed between the inner peripheral surface of the nozzle 16a and the outer peripheral surface of the distal end of the second nozzle 16c inserted into the thread insertion hole 16a 'of the first nozzle 16a.
A compressed air supply hole 16e is formed in the cylindrical body 16b, and the connecting pipe 16 inserted into the compressed air supply hole 16e is formed.
f is connected to a compressed air supply via a pipe (not shown). Guide cylinder 17 having thread insertion hole 17a
Is attached to one end surface of the soccer 16 by a suitable fixing tool such as a screw or a bolt, not shown, or by a suitable fixing tool via a suitable connecting tool. or,
One end side of the thread insertion hole 17a of the guide cylinder 17 is formed in a trumpet shape that gradually widens outward to facilitate the insertion of the thread into the thread insertion hole 17a during threading. A frusto-conical portion 17b is formed on the end face of the second nozzle 16c, which is partially inserted into a part of the injection port 16c 'of the second nozzle 16c.

Reference numeral 18 denotes a substantially C-shaped connecting metal fitting. The connecting metal fitting 18 has an end 18a fitted into a slit 16g formed on the outer peripheral surface of a cylindrical body 16b of the soccer 16, thereby forming a soccer 16 of the soccer 16. It is configured to be attached to the cylindrical body 16b, and a slit 18c into which the tip of the first nozzle 16a of the soccer 16 described above is inserted is formed in the central part 18b of the connecting bracket 18. Further, a pair of bolt holes 18d formed through a slit 18c is provided in a central portion 18b of the connection fitting 18.

Next, the assembly of the threading device S will be described.

First, a pair of bolt holes 18d formed in a central portion 18b of the connecting fitting 18 with a slit 18c interposed therebetween.
And a pair of bolt holes 19b drilled across the hole 19a of the connecting disc 19, and the bolts 20 are inserted into the holes 18d and 19b and screwed into the hollow guide portion 13
To the connecting bracket 18 are assembled. Next, by fitting the end portion 18a of the connection fitting 18 to the slit 16g formed on the outer peripheral surface of the cylindrical body 16b of the soccer 16,
The assembly from the hollow guide portion 13 to the connection fitting 18 assembled as described above is attached to the cylindrical body 16b of the soccer 16, and the assembly of the threading device S is completed.

By assembling as described above,
Thread insertion hole 13d of hollow guide portion 13, guide plate portion 14a
To 14c, the thread insertion holes 14a 'to 14c', the hole 19a of the connecting disk 19, the injection port 16c 'of the second nozzle 16c,
The center line of the thread insertion hole 17a of the guide cylinder 17 is configured to be coincident. Here, the hollow guide part 13, the guide plate parts 14a to 14c, the space securing cylinder parts 14d to 14f, 15 and the connecting disk 19 are all integrated into one body, so that the respective holes are formed by using a special jig during assembly. 14a 'to 14c' and the injection port 16
There is no need to perform high-precision alignment between c ′ and the tip S1. Further, the number of parts required for assembly can be reduced, and the assembly operation can be facilitated.

The thread insertion hole 12a of the threading target member 12
And the diameter of the thread insertion hole 13d of the hollow guide portion 13 have substantially the same diameter. In the present embodiment, the threading target member 12 and the assembled threading device S
Is formed separately. However, it is also possible to form the threading target member 12 and the assembled threading device S in an integrated configuration by, for example, aluminum die casting.

In FIG. 2, the thread insertion hole 14a 'of the guide plate portion 14a is preferably formed slightly larger than the diameter of the thread insertion hole 13d of the hollow guide portion 13. The diameter of the thread insertion hole 14b 'of the guide plate portion 14b is
It is preferable that the diameter of the thread insertion hole 14a 'is slightly larger than the diameter of the thread insertion hole 14a'. Further, the guide plate portion 14c is the guide plate portion 1
4a, the guide plate portion 14b is formed thicker than the guide plate portion 14b.
The diameter of the soccer 16 is larger than b ′, and the side of the soccer 16 is chamfered in a trumpet shape gradually expanding toward the first nozzle 16 a of the soccer 16.
The diameter of the thread insertion hole 16a 'of the first nozzle 16a is preferably smaller than the diameter of the end of the thread insertion hole 14c' of the guide plate portion 14c on the side of the football 16.

The process of threading from the guide cylinder 17 to the threading target member 12 by the threading device S having the above-described configuration will be described. The guide cylinder 17 side is defined as an upstream side in threading, and the threading target member 12 is defined as a downstream side in threading.

A thread end (not shown) is arranged near the thread insertion hole 17a of the guide cylinder 17, and compressed air is supplied from a compressed air supply source (not shown) to a compressed air supply hole 16e formed in the cylinder 16b of the soccer 16. The compressed air is supplied to the inner peripheral surface of the first nozzle 16a and the thread insertion hole 1 of the first nozzle 16a.
The second nozzle 16c is ejected from the second nozzle 16c in the direction of the guide plate portion 14c through an annular slit 16d formed between the second nozzle 16c and the outer peripheral surface of the distal end portion of the second nozzle 16c inserted into 6a '. By injecting air from the second nozzle 16c, the thread insertion hole 17a of the guide cylinder 17 becomes a negative pressure, and therefore, air entering through the thread introduction hole 17a 'of the guide cylinder 17,
The annular slit 16 is supplied from the compressed air supply hole 16e.
d, the air jetting in the direction of the guide plate portion 14c, the yarn introduction hole 17a of the yarn insertion hole 17a of the guide cylinder 17 is formed.
a 'to the ejection port 16c' of the second nozzle 16c, the guide plate 14c 'of the guide plate 14c, the guide plate 14b' of the guide plate 14b, and the guide plate 14 of the guide plate 14a.
The air flow discharged from the thread insertion hole 13d of the a 'hollow guide portion 13 and the end of the thread insertion hole 12a of the threading target member 12 is formed.

Next, the yarn is inserted into the yarn insertion hole 1 of the guide cylinder 17.
When the yarn is sent out in the direction 7a, the yarn to be sent rides on the above-mentioned airflow, and passes through the yarn introduction port 17a 'of the yarn insertion hole 17a of the guide cylinder 17 and the yarn insertion hole 16 of the first nozzle 16a.
a ', a thread insertion hole 14c' of the guide plate portion 14c, a thread insertion hole 14b 'of the guide plate portion 14b, a thread insertion hole 14a' of the guide plate portion 14a, a thread insertion hole 13d of the hollow guide portion 13, a threading target member. Through the 12 thread insertion holes 12a, threading to the downstream side is performed.

According to the present invention, as described above, the threading device S
Is composed of a hollow guide portion 13, guide plate portions 14a to 14c arranged at predetermined intervals, and a compressed air injection portion S2 including a soccer 16 and a guide cylinder 17, and the hollow guide portion 13 and Multiple guide plates 1
4a, 14b, 14c;
No housing or cover is formed between the soccer 16 and the compressed air injection portion S2 composed of the guide shaft 17, and the space is always open to the outside air in the space A without any cover. Accordingly, impurities such as fly waste and trash generated during the production of the yarn are discharged from the space A to the outside air formed between the distal end portion S1 and the compressed air injection portion S2, and fly waste, trash, etc. Can be prevented from adhering to the thread to be threaded or being taken into the thread, thereby deteriorating the quality of the thread.

According to the present invention, as described above, foreign substances such as fly cotton and trash adhere to the filter 3h,
At the time of threading, the compressed air supplied into the spindle member 3 through the slit 3g from the compressed air supply hole 3d ″ formed in the holder 3d passes through the filter 3h and the outer cylinder 3
a through the through-hole 3a 'formed in the
Backflow can be prevented, and the success rate of threading can be improved.

The threading device S of the present embodiment can be used, for example, when automatically supplying elastic yarn (spandex) with high elasticity to the spinning portion using the compressed air. In this case, since high-pressure compressed air can be supplied, the force of the compressed air, that is, the force of passing the yarn to the downstream side, suppresses deformation accompanying expansion and contraction, and makes it possible to send the yarn more smoothly and reliably to the downstream side. it can.

In the present embodiment, since the plurality of guide plate portions 14a to 14c having the thread insertion holes 14a 'to 14c', which are arranged at predetermined intervals, are provided, the generated yarn can be stably formed. The yarn can be transported in a state, so that the running of the yarn is stabilized.

As the diameters of the thread insertion holes 14a 'to 14c' formed in the guide plates 14a to 14c approach the distal end S1 from the compressed air injection section S2, the diameters of the thread insertion holes 14a 'to 14c' sequentially increase from the large diameter at which the thread can be easily inserted. , So that the thread can be easily inserted into each of the guide plates 14c to 14a.

[0036]

The present invention is configured as described above.
The following effects are obtained.

According to the first aspect of the present invention, there is provided a threading device for passing a thread from a large-diameter inlet to a small-diameter outlet by using compressed air, and having a yarn passage extending from the inlet to the injection port. An air injection unit, a space portion on the downstream side of the compressed air injection portion, and a tip portion on the downstream side of the space portion, the tip portions are provided side by side at predetermined intervals, and a passage hole is provided at a central portion. A plurality of guide plate portions are formed, and a part of the compressed air injected from the injection port through the yarn passage is allowed to escape outward from the space between the space portion and the guide plate portion, and the yarn passage and the injection are injected from the inlet. By passing the thread through the mouth and the tip to the outlet, fly waste or trash generated from the thread,
It is possible to prevent fluff and trash discharged from the space from adhering to the generated yarn or being taken in by the yarn, thereby reducing the yarn quality.

According to the second aspect of the present invention, the passage hole of the guide plate portion has a gradually decreasing diameter toward the downstream side, so that the thread can be inserted as the compressed air injection portion approaches the distal end portion. Since the configuration is such that the diameter is gradually reduced from an easy large diameter, the thread can be easily inserted.

According to the third aspect of the present invention, there is provided a support portion located between adjacent guide plate portions and maintaining the guide plate portions at a predetermined interval, and the guide plate portion and the support portion are integrally formed. This facilitates the assembly of the threading device and eliminates the need to perform high-precision alignment between the guide plate portions. Therefore, the alignment accuracy differs for each assembly, and the yarn quality is prevented from changing each time. Further, since the number of parts to be assembled can be reduced, the influence of assembly accuracy can be reduced.

According to the fourth aspect of the present invention, there is provided a connecting portion for connecting the compressed air jetting portion and the front end portion, and the guide plate portion,
The integrated structure of the support portion and the connecting portion facilitates the assembly of the threading device, and also necessitates high-precision positioning in the positional relationship between the injection port of the compressed air injection unit and the tip. Disappears. Therefore, the alignment accuracy differs for each assembly, and the yarn quality is prevented from changing each time. Further, since the number of parts to be assembled can be reduced, the influence of assembly accuracy can be further reduced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a threading device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the threading device of FIG.

FIG. 3 is a sectional view of a main part of a spinning device according to a conventional spinning device.

[Explanation of symbols]

 13 Hollow guide portions 14a, 14b, 14c Guide plate portions 14d, 14e, 14f, 15 Spacing cylinder portion 16c 'Injection port S Threading device S1 Tip S2 Compressed air injection section

Claims (4)

[Claims] 1. A threading device for passing a filament from a large-diameter inlet to a small-diameter outlet using compressed air, the compressed-air jetting section having a thread passage extending from the inlet to the jet port, A plurality of guide plate portions including a space portion on the downstream side of the jetting portion and a tip portion on the downstream side of the space portion, the tip portions being provided at predetermined intervals and having a through hole formed in the center portion. And a part of the compressed air injected from the injection port through the yarn passage is allowed to escape outward from the space between the space portion and the guide plate portion, and the outlet from the inlet through the yarn passage, the injection hole, and the tip portion. A threading device characterized in that the thread is passed up to the thread. 2. The threading device according to claim 1, wherein the passage hole of the guide plate portion gradually decreases in diameter toward the downstream side. 3. The threading device according to claim 1, further comprising a support portion located between adjacent guide plate portions and keeping the guide plate portions at a predetermined interval, wherein the guide plate portion and the support portion are integrally formed. apparatus. 4. The threading device according to claim 3, further comprising a connecting portion for connecting the compressed air jetting portion and the tip portion, wherein the guide plate portion, the supporting portion and the connecting portion are integrated.