JPH0562581U - Nip roller cover in spinning device - Google Patents

Abstract

(57) [Abstract] [Purpose] A nip roller that prevents knotting mistakes during automatic yarn splicing and that does not hinder the introduction of the yarn between the nip roller and the delivery roller, yet prevents the operator's operational danger. Get the cover. A cutter for spandex cutting is provided on a lower surface of an end edge portion of the nip roller cover, which covers a downstream side of a yarn guide portion adjacent to a yarn outlet portion of an air spinning nozzle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nip roller cover in a spinning device.

[0002]

[Prior Art]

 Generally, as shown in FIG. 7, a spandex core yarn spinning device includes a draft device 1 including a back roller pair 1a, a middle roller pair 1b mounted with an apron band, and a front roller pair 1c, and a spandex 21 serving as a core yarn. A spandex supply device 20 for supplying between the front roller pair 1c and the middle roller pair 1b, an air spinning nozzle for twisting the sliver S drafted by the drafting device 1 and the spandex 21 drawn from the front roller pair 1c. 2, a delivery roller 3 including a nip roller 3a for delivering the spun yarn Y 1 and a delivery roller 3b, and a winding device 4 for winding the delivered yarn 5, and 5 is a yarn provided with a cutter 6 and a suction pipe 7. Guide part, 8 slack tube, 9 slab catcher, 10 winding device Shows the Bath equipment. The front side of the spinning device is almost entirely covered with a cover 11, but when the slab catcher 9 detects a yarn defect and the cutter 6 cuts the yarn Y, the yarn end on the side of the air spinning nozzle 2 is removed. Suction gripping with a suction nozzle (not shown) moves to the front of the yarn joining device (not shown) for automatic yarn joining, and the yarn is introduced between the nip roller 3a and the delivery roller 3b. The cover 11 is cut out in the yarn traveling path portion between the portion 5 and the nip roller 3a. The suction nozzle and the yarn joining device are mounted on a yarn joining truck that runs between the slab catcher 9 and the winding device 10 along the longitudinal direction of the machine base.

In the spandex core yarn spinning device, even if the yarn Y is cut and the spinning of the yarn Y is stopped, the front roller pair 1c continues to rotate. Therefore, the spandex 21 is pulled out one after another even when the spinning is stopped, and is pulled out. The spandex 21 is sucked into the suction pipe 7. For this reason, the spandex 21 is sucked into the suction pipe 7 for a long time after the yarn is cut and before the suction nozzle comes to pick up the spandex 21.

Therefore, an unnecessary portion of the spandex 21 sucked by the suction pipe 7 is also picked up by the suction nozzle and guided to the yarn joining device, which causes a knotting error. Moreover, since the nip roller is exposed, problems such as danger in operation of the operator were recognized.

[0005]

[Problems to be solved by the device]

 This invention is intended to obtain a nip roller cover that prevents knotting mistakes during automatic yarn splicing and that does not hinder the introduction of the yarn between the nip roller and the delivery roller and that prevents the operator's operational danger. To aim.

[0006]

[Means for Solving the Problems]

 A spandex cutting cutter is provided on the lower surface of the edge portion of the nip roller cover that covers the downstream side of the yarn guide portion adjacent to the yarn outlet portion of the air spinning nozzle.

[0007]

[Action]

 When the suction nozzle sucks the yarn end on the side of the air-spinning nozzle and moves to the yarn splicing device, unnecessary parts of the spandex sucked by the suction pipe are cut and removed to prevent notting mistakes and at the time of yarn splicing. The yarn positioned on the nip roller cover moves along the inclined edge of the nip roller cover when tension is applied to the yarn, is fitted into the slit portion, and is introduced between the nip roller and the delivery roller by the tension. Further, the work risk of the operator is prevented by covering the nip roller.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1 to FIG. 3, the present invention includes a cutout 12 on a cover 11 that abuts the yarn traveling path except for an upper surface portion of a gutter-shaped housing 5 downstream of an air spinning nozzle 2. A part of the cover 11 is covered with a nip roller cover 13, and one end edge portion 11a in the depth direction of the cutout portion 12 of the cover 11 and one end edge portion 13a of the nip roller cover 13 are attached by a hinge 22 for maintenance. The nip roller cover 13 can be opened and closed for easy operation. Instead of the hinge 22, it may be attached by screwing, bonding or the like. Further, a slit 14 is formed between the other end edge portion 11b in the depth direction and the other end edge portion 13b of the nip roller cover 13, and the end portion in the width direction of the nip roller cover 13 facing the air spinning nozzle 2 side. The edge portion 13c forms an edge portion 13c which is inclined toward the slit 14 toward the opening direction of the cutout portion 12, and a blade edge portion 15a is slightly formed on the lower surface of the edge portion 13c from the edge portion 13c. The cutter 15 is attached to face the.

Further, a flange portion 16 that is bent and hung downward is formed on the end edge portion 13b. Needless to say, the notch 12 opening side edge portion 13d of the nip roller cover 13 covers the delivery roller 3 composed of the nip roller 3a and the delivery roller 3b. The edge portions 13b and 13c and the collar portion 16 are plated with chrome or the like to form a smooth surface, which reduces friction with the yarn and reinforces the nip roller cover 13. Therefore, if the edge portions 13b and 13c form a smooth surface, the collar portion 16 is not necessarily provided.

Since the nip roller cover 13 of the present invention is constructed as described above, it is drawn out from a can (not shown) as shown in FIG. 7, supplied to the draft device 1 via the trumpet guide 17, and drafted. The sliver S is twisted by the air spinning nozzle 2 after being combined with the spandex 21 pulled out from the front roller 1c, and is taken up by the winding device 4 via the feeding roller 3 including the nip roller 3a and the delivery roller 3b. However, when the slab catcher 9 detects a defective portion of the yarn Y and the cutter 6 operates to cut the yarn, the suction nozzle 18 on the yarn splicing carriage rotates to move the tip of the nozzle as shown in FIG. The yarn spun from the air-spinning nozzle 2 and the outlet and suction of the air-spinning nozzle 2 to reach the downstream position of the air-spinning nozzle. Spandex 21 over between the pipe 7 and the suction grip as shown in FIG. 5 is guided to the yarn splicing device front.

FIG. 6 shows a state where the suction nozzle 18 is moving to the front surface of the knotter. At that time, the spandex 21, which is the core yarn, is bent from the yarn outlet of the air spinning nozzle 2 through the suction nozzle 18 to the suction pipe 7 of the yarn guide 5 in a hairpin shape, and is drawn out. From the yarn to the suction nozzle 18 ₁ And the part Y from the suction pipe 7 of the spandex 21 to the suction nozzle 18.₂The result is different from the locus of Y₁Is brought out of contact with the upper edge of the edge portion 13c of the nip roller cover 13 of the present invention, and is the portion Y from the suction pipe 7 of the spandex 21 to the suction nozzle 18.₂Is cut by touching the cutter 15. That is, the cutter 15 slightly exposes the blade edge portion to the back surface of the end edge portion 13c of the nip roller cover 13 so that the spandex portion Y₂It is arranged so that it touches only the locus of, and the spandex part Y₂By cutting, the excess part of the spandex 21 that was sucked into the suction pipe 7 is sucked and discarded into the suction pipe 7, and the spandex part from the cutter 15 to the suction nozzle side is sucked into the suction nozzle, and during yarn splicing. It does not cause a knotting (splicing) error. In order to ensure the cutting, it is preferable to provide the projection 15b at the rear end of the cutter 15.

Further, as the suction nozzle 18 moves to the front surface of the knotter, the yarn Y is positioned on the nip roller cover 13 of the present invention at the beginning of the invention, but the yarn Y is caused by the tension applied to the yarn as shown in FIG. After moving along the slanted edge 13c of the nip roller cover 13, it is fitted into the slit 14 and comes into contact with the delivery roller 3b, and is naturally introduced between the nip roller 3a and the delivery roller 3b by the action of tension, and after the yarn splicing is completed. Reaches the steady state shown in FIG. 8 and restarts spinning. In the above embodiment, the cover 11 and the nip roller cover 13 are described as separate bodies, but it goes without saying that they may be integrally formed on the cover 11.

[0014]

[Effect of the device]

 As described in detail above, in the nip roller cover of the present invention, a spandex cutting cutter is provided on the lower surface of the thread guide side end edge portion of the nip roller cover which covers the downstream side of the thread guide portion adjacent to the yarn outlet of the air spinning nozzle. Therefore, at the time of yarn splicing, when the suction nozzle sucks the cutting yarn end on the air spinning nozzle side and moves to the yarn splicing device, the unnecessary part of the spandex sucked by the suction pipe is cut and removed. This prevents knotting mistakes in the automatic yarn splicing device, and the yarn on the air spinning nozzle side that is continuously sucked and drawn by the suction nozzle is the tension applied to the yarn when moving on the nip roller cover of the present invention. Moves along the edge of the nipple roller cover in the width direction, fits into the slit, and contacts the delivery roller. Then, the tension is naturally introduced between the nip roller and the delivery roller, so there is no hindrance to the introduction of the yarn, the risk of the operator's work is eliminated, and the quality and productivity are improved. Was able to make a significant contribution to

[Brief description of drawings]

FIG. 1 is a plan view of a nip roller cover of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a side view of the first stage illustrating the operation of the nip roller cover of the present invention.

FIG. 5 is a side view of the same as the second stage.

FIG. 6 is a partial cross-sectional side view of the same as the third stage.

FIG. 7 is a perspective view of a conventional spinning device.

[Explanation of symbols]

 2 Air spinning nozzle 5 Thread guide part 6,15 Cutter 11 Cover 11a, 11b, 13a, 13b, 13c, 13d Edge 12 Cutout 13 Nip roller cover 14 Slit

Claims (1)

[Scope of utility model registration request] 1. A nip roller cover in which a spandex cutting cutter is provided on the lower surface of the edge portion of the yarn guide side of the nip roller cover that covers the downstream side of the yarn guide portion adjacent to the yarn outlet portion of the air spinning nozzle.