JP2006312532A - Core yarn supply device in core yarn manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a core yarn supply device in a core yarn manufacturing device, capable of minimizing a variation in tension applied to core yarn in response to a package width by small man-hours, even if the package width of the core yarn is variously changed. <P>SOLUTION: This core yarn supply device 2 in the core yarn manufacturing device supplies the core yarn D unreeled from a package 21 in a traverse state to a draft device. A core yarn guide 24 for introducing the core yarn D to the draft device is arranged between the package 21 and the draft device. This core yarn guide 24 has a guide hole 24a for guiding the core yarn D and guide hole positioning means 2b and 2c for positioning a position of the guide hole 24a in a position corresponding to the traverse center in the package 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a core yarn supply device in an apparatus for manufacturing a covering spandex core yarn (hereinafter referred to as a core yarn) in which a fiber bundle made of short fibers is wound around a core yarn such as an elastic yarn.

A core yarn using an elastic yarn such as spandex as a core yarn and covered with a fiber bundle made of short fibers such as wool or cotton is said to have both excellent stretchability of elastic yarn and good texture of natural fiber. Has features.

The device for producing the core yarn supplies the core yarn to the draft device via the core yarn guide and the air soccer, while applying appropriate tension to the core yarn unwound from the package, and the short fiber in the draft there The core yarn is produced by joining the bundle and tangling the short fiber to the core yarn by an air spinning device.
JP 2002-363834 A

By the way, the core yarn unwound from the package is naturally traversed, but the core yarn guide has a guide hole at a position where the width of the traverse is substantially equal (hereinafter referred to as traverse center). The core yarn guide is configured to equalize the influence of the core yarn guide on the core yarn passing therethrough and to minimize tension fluctuation.

However, since there are various package widths of the core yarn used, when the core yarn guide is fixed at a fixed position, the influence on the tension can be equalized as intended with a certain package width. With the package width of the core thread guide, the guide hole of the core thread guide is disengaged from the traverse center, and the influence on the tension becomes uneven, leading to large tension fluctuations during core thread supply, resulting in product quality degradation. . In addition, it is possible to avoid the above problem by changing the attachment position of the core yarn package according to the width thereof, but this requires a lot of man-hours and is not practical.

The present invention has been made in view of the above circumstances, and an object of the present invention is to respond to the package width with a small number of man-hours and to apply tension to the core yarn even if the package width of the core yarn is variously changed. It is an object of the present invention to provide a core yarn supplying device in a core yarn manufacturing apparatus capable of minimizing fluctuations in the core yarn.

In order to solve the above-mentioned problems, the present invention provides a core yarn supply device in a core yarn manufacturing apparatus that supplies a core yarn unwound from a package in a traversing state to a draft device, the core yarn supplying device comprising: A core yarn guide for guiding the core yarn to the draft device is provided between the guide yarn guide guide hole for guiding the core yarn and the position of the guide hole corresponding to the center of traversing in the package. It is characterized by comprising a guide hole positioning means for positioning at a position to be performed.
The traversing here means traversing that naturally occurs when the core yarn is unwound from the traversed and wound package. The traverse center means a position that divides the traverse width substantially equally.

Further, in the above configuration, the guide hole positioning means in the core yarn guide is formed by a plurality of positioning holes, and can be selectively mounted on a mounted portion for mounting the core yarn guide. It is preferable.

Moreover, in the said structure, you may provide a positioning pin and an attachment bolt in the to-be-attached part for attaching the said core thread guide by the space | interval corresponding to the space | interval of these positioning holes.

According to the core yarn supply device of the present invention configured as described above, the guide hole of the core yarn guide comes to the traverse center in accordance with the width (axial length) of the core yarn package to be used. Since they can be moved and fixed, the influence on the core yarn passing therethrough can be equalized, and fluctuations in tension of the core yarn can be minimized. Therefore, it is possible to avoid the quality deterioration of the core yarn to be manufactured.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a core yarn manufacturing apparatus 100 to which a core yarn supplying device 2 according to the present invention is applied, and FIG. 2 is a side sectional view of the core yarn manufacturing apparatus 100.

The core yarn manufacturing apparatus 100 to which the core yarn supply device 2 according to the present invention is applied mainly includes a draft device 3, an air spinning device 4, a yarn feed roller 5, a slab catcher 7, a core yarn winding as shown in FIG. A plurality of spinning units 1 including a take-up device 8 and a core yarn supply device 2 arranged in parallel in the machine table longitudinal direction, and a yarn joining cart 9 that can run between them are configured.
First, parts other than the core yarn supply device 2 of the core yarn manufacturing apparatus 100 will be schematically described.

As shown in FIG. 1 or FIG. 2, the draft device 3 mainly includes a back roller 31 that is paired up and down, a middle roller 32 on which an apron belt is stretched, and a front roller 33. A sliver S supplied from a cans (not shown) through a guide (not shown) is aligned with a predetermined fiber bundle S1.

As shown in FIG. 1 or FIG. 2, the pneumatic spinning device 4 is disposed downstream of the draft device 3 and in the vicinity of the front roller 33, and an elastic yarn D supplied from a core yarn supply device 2 described later. Then, the fiber bundle S1 drafted by the draft device 3 is spun by applying a swirling airflow of compressed air to produce a core yarn C that covers the periphery of the elastic yarn D with the fiber bundle S1.

As shown in FIG. 1 or FIG. 2, the paired upper and lower yarn feed rollers 5 are provided downstream of the pneumatic spinning device 4, and apply a feeding force to the manufactured core yarn C, so To feed. Here, the peripheral speed due to the rotation of the yarn feed roller 5 is made larger than the peripheral speed of the rotary roller 22 in the core yarn supply device 2 described later, and the elastic yarn D is transferred from the rotary roller 22 to the yarn feed roller 5. During this time, an appropriate tension is applied and the film is stretched.

As shown in FIG. 1 or FIG. 2, the winding device 8 is provided at the lower front part of the spinning unit 1 and winds the fed core yarn C around the package 81.

The slab catcher 7 is provided between the yarn feeding roller 5 and the winding device 8, and detects yarn defects such as yarn unevenness of the fed core yarn C.
When a yarn defect is detected by the slab catcher 7, the cutter 6 disposed between the pneumatic spinning device 4 and the yarn feed roller 5 operates to cut the core yarn C. When this cutting is performed, driving of the pneumatic spinning device 4, the back roller 31, and the elastic yarn package 21 described later is stopped, and a clamp cutter 25 described later holds the elastic yarn D and cuts the end thereof. To be controlled. Then, after removing unnecessary yarns, the yarn joining operation is performed by the yarn joining cart 9 described later.

The yarn splicing carriage 9 is mainly composed of a yarn splicing portion 91, a suction nozzle 92 and a suction mouth 93 provided so as to be rotatable, and a blower (not shown) for generating suction, and is formed in a cross-sectional C shape with an open front surface. In the inner space continuous in the longitudinal direction of the frame 1 a of the spinning unit 1, the spinning unit 1 is disposed so as to be able to travel along the rails 94 and 95.
The suction nozzle 92 rotates upward to a position where the suction port 92a is in the vicinity of the outlet of the pneumatic spinning device 4, sucks the yarn end on the spinning side, and returns to the original position, thereby removing the yarn end. The yarn is guided to the yarn joining portion 91.
On the other hand, the suction mouse 93 is rotated to the vicinity of the package 81 of the winding device 8 to suck the yarn end on the winding side and return to the original position to guide the yarn end to the yarn joining portion 91.
The yarn joining section 91 joins the spinning yarn end and the winding device 8 yarn end, and the operation is resumed.

Next, the core yarn supply device 2 according to the present invention will be described. FIG. 3 is a schematic perspective view of the core yarn supply device 2 according to the present invention, and FIG. 4 is a schematic perspective view of the core yarn guide 24 according to the core yarn supply device 2. Further, FIG. 5 is a plan view schematically showing the operation of the core yarn guide 24.
The core yarn supply device 2 mainly includes a package 21 of elastic yarn D, a rotating roller 22, a motor 23, a core yarn guide 24, a clamp cutter 25, and an air soccer 26 for air slitting, which are arranged in parallel. It is stretched along the spinning unit 1.

As shown in FIG. 2 or 3, the elastic yarn D package 21 is rotatably supported by a cradle arm 27 attached to a horizontal shaft 27a so as to be able to be raised and lowered above the core yarn supplying device 2. It arrange | positions so that it may contact | abut to the roller 22 and may follow. The rotating roller 22 is connected to a motor 23 via a belt 28 and is rotated by the motor 23.

As shown in FIG. 3, the air soccer device 26 for air slitting has a plurality of threading members 26a which are disk-shaped and have threading holes (not shown) having different diameters. It is arranged and configured as follows. Accordingly, high-pressure air can be allowed to flow on the central axis of the threading hole while effectively releasing air from the gap between the threading members 26a, and the elastic thread D is not loosened through the introduction pipe 29. Can be supplied to the draft device 3.

As shown in FIG. 2 or FIG. 3, the clamp cutter 25 is disposed between the rotary roller 22 and the air soccer device 26, and is used to set the elastic yarn D during the initial yarn setting or when the core yarn C is cut by the slab catcher 7 described above. Is gripped and its end is cut.

As shown in FIG. 2 or FIG. 3, the core yarn guide 24 is arranged between the rotating roller 22 and the clamp cutter 25 so as to guide the unwound elastic yarn D to the draft device 3 via the air soccer device 26. Has been.
The core yarn guide 24 is formed in a plate shape having a guide hole 24a and a plurality of positioning holes 24b as shown in FIG. 4, and is provided on the frame 2a of the core yarn supply device 2 as shown in FIG. The positioning hole 24b is inserted into the positioning pin 2b, and is attached to the frame 2a by the mounting bolt 2c passing through the adjacent positioning hole 24b.
The plurality of positioning holes 24b are arranged in parallel in the axial direction of the elastic yarn package 21, and the position of the core yarn guide 24 is changed to the axis of the elastic yarn package 21 by changing the positioning holes 24b inserted into the positioning pins 2b. It can be moved along the direction.
The parallel pitch of the positioning holes 24b is equal to the pitch of the positioning pins 2b provided on the frame 2a and the bolt holes (not shown) for the mounting bolts 2c.

Further, a non-contact type core thread detection sensor (not shown) is attached between the core thread guide 24 and the clamp cutter 25, and at the time of initial thread setting or thread cutting by thread defect detection, The presence or absence of the elastic yarn D can be detected.

The core yarn supply device 2 is disposed above the draft device 3 so that the elastic yarn D supplied from the core yarn supply device 2 joins the fiber bundle S1 from between the front roller 33 and the middle roller 32.

According to the core yarn supply device 2 configured as described above, the core yarn guide 24 has a plurality of positioning holes 24b arranged in parallel in the axial direction of the elastic yarn package 21, and as shown in FIG. By changing the positioning hole 24b to be inserted into the positioning pin 2b in the body 2a, the guide hole 24a becomes the center of traversing in the elastic yarn unwinding according to the width (length in the axial direction) of the elastic yarn package 21 to be used. It can be moved to the position. Therefore, the tension fluctuation of the elastic yarn D due to the core yarn guide 24 can be minimized, and the quality deterioration of the manufactured core yarn can be prevented.

As mentioned above, although embodiment of this invention was described, demonstrating a specific example, this invention is not limited to these specific examples.
In the above-described embodiment, the motor 23 that drives the rotating roller 22 is provided for each spinning unit 1, that is, for each core yarn supplying device 2, but the rotating roller 22 is driven by a common drive shaft that is rotated by one motor. May be configured to be driven.

The core yarn guide 24 may be attached using only the attachment bolt 2c. In this case, the positioning pin 2b can be omitted.
Further, the positioning hole 24b of the core yarn guide 24 may be a single long hole extending in the axial direction of the elastic yarn package 21 and attached using a bolt or the like. In this case, the position can be changed steplessly, and the movement can be electrically controlled using an actuator.

It is a front view of the core yarn manufacturing apparatus to which the core yarn supplying apparatus according to the present invention is applied. It is side sectional drawing of the core yarn manufacturing apparatus to which the core yarn supply apparatus concerning this invention is applied. It is a schematic perspective view of the core yarn supply apparatus concerning this invention. It is a schematic perspective view of a core yarn guide. It is a top view which shows roughly the effect | action of a core yarn guide.

Explanation of symbols

D Elastic thread (core thread)
2 Core thread supply device 2b Positioning pin (guide hole positioning means)
2c Mounting bolt (guide hole positioning means)
21 Elastic Yarn Package (Package)
24 Core thread guide 24a Guide hole

Claims (3)

A core yarn supply device in a core yarn manufacturing apparatus that supplies a core yarn to be unwound in a traversing state from a package to a draft device,
A core yarn guide for guiding the core yarn to the draft device is provided between the package and the draft device, and the core yarn guide has a guide hole for guiding the core yarn, and a position of the guide hole. A core yarn supply device in a core yarn manufacturing apparatus, comprising: a guide hole positioning means for positioning at a position corresponding to the center of traversing in a package. The guide hole positioning means in the core yarn guide is formed by a plurality of positioning holes, and can be selectively attached to an attached portion for attaching the core yarn guide. The core yarn supply device in the core yarn manufacturing device according to claim 1. 3. The core yarn manufacturing apparatus according to claim 1, wherein positioning pins and mounting bolts are provided at an interval corresponding to an interval between the plurality of positioning holes in an attached portion for attaching the core yarn guide. Core yarn supply device.

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