JPH10273833A - False twister for doubling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a false twist device for doubling capable of preventing yarn breakage in threading (yarn introduction) and yarn processing and improving threading property. SOLUTION: In a false twister provided with a pressure belt 31 on the both sides of a rotating disk 30 while interposing the rotating disk 30, a cover for covering a part bringing a yarn in close to the rotating disk in and after introduction of yarn and avoiding contact with the yarn is provided over the rotating disk 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a false twisting device for twisting two filaments by twisting each of the two filaments, and more particularly to a twisting device for imparting S twist and Z twist to each yarn. The present invention relates to a twining false twist device including a rotating disk and a contact pressure belt.

[0002]

2. Description of the Related Art As shown in FIG. 7, a drawing false twisting machine to which a false twisting device for SZ yarns is applied takes out two yarns Y from a yarn creel 10 and simultaneously feeds the yarns Y with a first feed roller 11. Guide, heat through the first heater 12, cool with the cooling plate 13,
After twisting in the S and Z directions and measuring the tension of these SZ twisted yarns with a tension sensor 15, the SZ twisted yarns are combined, guided by a second feed roller 16 and passed through a second heater 17. , Third feed roller 18, yarn detector 19
The take-up winder 22 is wound around a take-up winder 22 via an oiling roller 21 through a winding device 23 through an underside of a maintenance passage 20 through a winding line Y1. 24 is a yarn feed Y from the yarn feed creel 10.
Is a smoke exhaust duct of the first heater 12, and 26 is a pre-twister guide of the SZ twining false twister 14.

[0003] The false twisting device 14 for SZ twining is provided with pressure belts 31 on both sides of the rotating disk 30 so that two filament yarns are applied on both sides of the rotating disk 30 in the S direction and the Z direction.
The twist is applied in the direction.

[0004]

In the conventional false twisting device 14, there is a problem that the yarn may come into contact with the rotating disk 30 at a portion other than the portion where the yarn is twisted, or a problem that the yarn hooking property is poor.

Accordingly, an object of the present invention is to provide a false twisting device for twining yarn which can solve the above-mentioned problems and can prevent yarn breakage at the time of yarn hooking (at the time of yarn introduction) or yarn processing and can improve yarn hooking properties. Is to do.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a false twisting apparatus for twining yarns in which a rotating disk is interposed and contact pressure belts are provided on both sides of the rotating disk. This is a false twisting device for ply yarn provided with a cover for covering a portion where the yarn approaches and avoids contact with the yarn at the time of introduction and after introduction of the yarn.

A second aspect of the present invention is the false twist false twisting device according to the first aspect, wherein the yarn introduction portion of the cover is formed to have a shape in which the front end portion is narrow and becomes wide as it goes toward the back. .

According to a third aspect of the present invention, the cover is provided with a guide for guiding the yarn, the guide is formed of a material having high wear resistance, and the cover is formed of a metal. It is a false twisting device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

[0010] The overall configuration of the drawing false twisting machine for SZ twining to which the present false twisting apparatus is applied is as described with reference to FIG.

In FIG. 1, reference numeral 30 denotes a rotating disk whose rotating shaft 32 is fixed to a fixed frame 34 by bearings 33.

A friction ring portion 35 made of rubber is formed on the outer peripheral portion of the rotary disk 30, and the friction ring portion 3 is formed.
The contact pressure belts 31 are provided on both sides of the contact belt 5.
The contact pressure belt 31 is configured such that a belt 38 is stretched between a driving roller 36 and a driven roller 37, and the driving roller 36 and the driven roller 37 are rotatably provided on a common fixed frame 40. The contact pressure belt 31 is rotated by an air cylinder provided on the movable frame 41 and rotatably provided on the fixed frame 40 (not shown in detail) so that the contact pressure on the rotating disk 30 can be adjusted by the air pressure. Has become. The yarn Y is sandwiched between the friction ring portion 35 of the rotating disk 30 and the contact pressure belt 31, and S twist is applied to the yarn Y on one belt 31 side and Z twist is applied to the yarn Y on the other belt 31 side. The yarn Y is passed so as to cross the side of the rotating disk 30, and crosses the friction ring portion 35 between a portion sandwiched by the pressure contact belt 31 and another portion.

Further, the rotation transmitting shaft 42 of the driving roller 34,
Reference numeral 43 denotes an S-twisted side and a Z-twisted side which have different lengths.
5 is driven. The drive belts 44 and 45 are driven by a motor 46 provided on the fixed frame 34.

The rotary disk 30 has a thread introduction portion 3
A cover 48 that covers Oa is provided. This cover 48
Will be described with reference to FIGS.

The cover 48 is required to allow the yarn Y to approach the disk 30 when the yarn is introduced into the rotating disk 30 at the time of threading and at the time of yarn processing after the yarn introduction, and to avoid contact between the disk 30 and the yarn. At least a portion 30a is covered.

The cover 48 comprises a metal cover member 49 formed entirely in an arc shape as shown in FIG. 3A, and as shown in FIG. Introduced portion) 49a is formed in a sharp V-shaped cross section whose tip is narrow and widens toward the back.
0 is formed at the end of the cover member 49 with a flange portion 50 (FIG. 4) for attaching to the fixed frame 34 with a bolt or the like, and the yarn exit side (friction) twisted in the S and Z directions respectively. A guide member 52 made of a material having high wear resistance, such as ceramic, is provided at a portion where the ring portion 35 and the yarn Y intersect. Twisted yarn Y
Is guided by the guide member 52 and travels. When the cover member 49 is made of a metal having high rigidity, the deflection of the yarn Y guided by the guide member 52 is suppressed.

The portion of the cover 44 which is in contact with the yarn when the yarn is introduced or when the yarn is processed is rounded so as to have no corners.

The pretwister guide 26 rotates from the position shown by the solid line in FIG. 1 to the position shown by the two-dot chain line to introduce the yarn Y between the rotating disk 30 and the pressure belt 31. .

As shown in FIGS. 5 and 6, the rotating disks 30 are provided in multiple rows on a shaft 32, and the shafts 32 are supported by bearings 33 to fix a large number of SZ composite yarns. The motor 46 provided on the frame 34 is rotated by a transmission device 54 including a pulley and a transmission belt. In this case, the transmission device 54 is located at the center of the shaft 32, and the shaft 32 receives the driving force at the center 54a. The bearing 33 is provided between the drive force transmitting member 54a of the shaft 32 and the shaft 32.
Are provided so as to support the free end.

Further, between the rotating disks 30, the rotating disks 3
0 and the bearing 33, and between the rotary disk 30 and the driving force transmitting portion 54a, the shaft 32,
6, 57 are covered so that the shaft 32 is not exposed, and the distance between the disks 30 is maintained. The shaft covers 55, 56, and 57 have a function of stopping the run-out of the disk 30 by expanding the portion in contact with the disk 30.

Next, the operation of the present invention will be described.

When the yarn is hooked, the two yarns Y are rotated by the rotation of the pre-twister guide 26 as described above, and
0 and is introduced between the contact pressure belt 31. At this time, cover 4
The front side outer peripheral portion 49a, which is the yarn introduction portion of No. 8, is shown in FIG.
As shown in the figure, the tips are formed in a V-shape, so that the two yarns Y in contact can be easily separated into the S-twist side and the Z-twist side, and each of the yarns Y is positioned on the guide member 52 respectively. Become like

Further, even if the rotating disk 30 is rotated, the yarn Y is not covered with the cover 48 and cuts off by contact with the disk 30. Thread Y on cover 48
Since the guide member 52 is provided, the yarn Y travels stably and the yarn quality is improved. The cover 48 may be provided so as to cover the entire exposed portion of the rotating disk 30.

[0024]

As described above, according to the present invention, the yarn can be easily introduced between the rotating disk and the pressure belt, and the yarn can be prevented from being cut at the time of yarn introduction and yarn processing.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view of a cover in FIG.

3A is a front view of a cover, and FIG. 3B is a cross-sectional view taken along line AA of FIG.

FIG. 4 is a left side view of FIG.

FIG. 5 is a partial sectional view showing details of a rotating disk and a shaft.

FIG. 6 is a detailed enlarged view of FIG. 5;

FIG. 7 is an overall view of a drawing false twisting machine for twining.

[Explanation of symbols]

 Reference Signs List 30 rotating disk 31 pressure belt 49 cover

Claims (3)

[Claims] In a twining false twisting device provided with contact pressure belts on both sides of a rotating disk, when the yarn is introduced into the rotating disk and after the yarn is introduced, the yarn approaches to avoid contact with the yarn. A false twisting device for a twine, comprising a cover for covering the portion. 2. The false twisting device for ply yarn according to claim 1, wherein the yarn introduction portion of the cover is formed to have a shape in which a tip portion is narrower and becomes wider as it goes deeper. 3. The false twisting device for ply yarn according to claim 1, wherein a guide for guiding the yarn is provided on the cover, the guide is made of a material having high wear resistance, and the cover is made of metal.