JPH10102333A - Friction twister - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a friction twister capable of rotating at a high speed by forming each rotating axis so as to be rotated by a magnetic action. SOLUTION: This friction twister capable of providing a false twist to a traveling yarn by disks 5 rotating with three axes 1 has a disc-like sub-rotor 10 fixed on the lower terminal of the each rotating axis 1 and having a magnetic part 10a formed on the under surface of the sub-rotor, and a disk-like main rotor 11 arranged at a little lower part of the sub-rotor 10, fixed to an outputting axis 13 of a motor 12 and having magnetic a part 11a on the upper surface. The main rotor 11 is arranged so as to have parts facing to all sub- rotors 10 and the rotation of the main rotor can be transmitted to the three sub-rotor 10 (the rotating axes 1) by the magnetic action.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction twister (friction false twist device) for imparting false twist to a yarn running by a disk rotating with a plurality of rotating shafts.
More specifically, the present invention relates to a friction twister in which each rotation shaft is rotated by a magnetic action so as to be able to rotate at high speed.

[0002]

2. Description of the Related Art In general, various devices for giving false twist to synthetic fibers are known. One of them is a friction twister for giving false twist to a running yarn by friction of a rotating disk. Normally, the friction twister has three rotatable rotating shafts, and friction disk units are inserted into the respective rotating shafts at different heights with a part of the disk overlapping. Then, by rotating the three units in synchronization, a false twist is given to the yarn running while contacting each disk.

[0003]

In such a friction twister, a belt transmission system is usually employed in order to synchronously rotate three rotating shafts. For example, one rotating shaft is directly driven to rotate by one motor, and the rotation is transmitted to other rotating shafts via a belt stretched between pulleys fixed to each rotating shaft. . However, in this method, energy loss due to belt driving, increase in shaft load due to belt tension, and increase in noise have occurred. These factors have not only been a major obstacle to speeding up the rotation of the rotating shaft, but have also caused a decrease in the quality of the yarn to which false twist is applied.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a friction twister which can speed up the rotation of a rotating shaft and improve the quality of a yarn.

[0005]

In order to achieve the above object, an invention according to claim 1 is a friction twister for applying false twist to a yarn running by a disk rotating with a plurality of rotating shafts, A main rotating body that is rotated by a motor and has a magnetized surface; and a sub-rotating body that is attached to each rotating shaft and has a magnetized surface facing the magnetized surface of the main rotating body. The friction twister is adapted to be transmitted to the sub-rotating body. In the present invention, since each rotating shaft is rotated by the magnetic action, there is no occurrence of a factor that is a great obstacle to speeding up as in the case of the belt drive system.

According to a second aspect of the present invention, the magnetized surface of one main rotating body is simultaneously opposed to the magnetized surfaces of a plurality of sub-rotating bodies. According to the present invention, a plurality of sub rotators can be surely and synchronously rotated by one main rotator.

According to a third aspect of the present invention, the main rotator and the sub rotator have a disk shape, and the rotation center of the main rotator is set at the center of the polygon constituted by the rotation centers of the plurality of sub rotators. Shall be located. According to the present invention, the rotating shafts can be more reliably and easily rotated synchronously.

[0008]

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.

In the friction twister according to the present embodiment, a twister unit U as shown in FIG.
A false twist is imparted to the yarn y traveling in the portion. The twister unit U has three rotating shafts 1 that are arranged in parallel with their axes oriented vertically. Each rotating shaft 1 is disposed so as to be located at the vertex of an equilateral triangle in plan view, and is supported by a bearing 2 and protrudes upward from the bracket 3, and a lower portion protrudes downward through the bracket 3.

Disk units 4 are inserted into the three rotating shafts 1, respectively. Each unit 4 is composed of three disks 5 and a plurality of spacers 6, and is fitted on the rotating shaft 1 as a unit. The plurality of spacers 6 are arranged in the same unit 4 so that the vertically adjacent disks 5
There are two types, one for defining the interval between them and the other for shifting the height of each unit 4 inserted into each rotating shaft 1. The unit 4 inserted into the rotating shaft 1 is sandwiched between the bearing 2 and a detachment preventing member 7 screwed to the upper end of the rotating shaft 1. With such a configuration, the disk 5 can be rotated together with the rotation of the three rotating shafts 1.

The three units 4 are inserted into the three rotating shafts 1 such that the disks 5 have overlapping portions in the vertical direction. The yarn y that has passed through the upper guide 8 travels downward while contacting each disk 5 in a wavy manner, and a false twist is given by rotation of the disk 5. Of the nine disks 5, the one that actually applies false twist to the yarn y is the second to eighth polyurethane disks 5 from the top, and the uppermost and lowermost disks 5 are made of metal ( The guide disk is made of aluminum. The yarn y that has passed through the false twist applying section exits the twister unit U after passing through the notch 9 of the bracket 3.

A thin disk-shaped auxiliary rotating body 10 is horizontally fixed to the lower end of each rotating shaft 1. On the lower surface (magnetized surface) of the sub-rotating body 10, N poles and
A magnetized portion 10a magnetized so as to have an S pole is formed. The three sub-rotators 10 are at the same height, and their lower surfaces are all in the same horizontal plane. These auxiliary rotating bodies 10
Slightly below, one thin disk-shaped main rotator 11 is horizontally arranged so as to overlap with all the sub rotators 10 in the up-down direction (to have opposing portions). This main rotating body 11 is fixed to an output shaft 13 of a motor 12,
A magnetized portion 11a similar to the magnetized portion 10a of the auxiliary rotating body 10 is formed on the upper surface (magnetized surface). In addition, three auxiliary rotating bodies 1
0 and the diameter of the main rotating body 11 are all equal, and the NS pitch in the magnetized portion (distance between adjacent N pole and S pole)
Are also equal. The main rotator 1 and the sub rotator 10
The vertical interval between them is such that the rotation of the main rotator 11 is normally transmitted to each sub rotator 10.

FIG. 3 shows a modification. In this example, the main rotator 11 and the sub rotator 10 have a magnetized side surface,
The three auxiliary rotating bodies 10 are arranged so that the side faces face the main rotating body 11. In FIG. 3, the same reference numerals are used for common members as in FIGS.

In order to reduce the axial load applied to the bearing 2 of each rotating shaft 1, another rotating body is fixed coaxially with the main rotating body 11 (output shaft 13) so as to sandwich the auxiliary rotating body 10, The magnetic action may be exerted from both sides of the sub-rotating body 10.

As described above, the magnetized surfaces of the three sub-rotors 10 and the magnetized surface of the main rotator 11 have opposing portions in the vertical or horizontal direction. With the rotation of the rotating body 11, the three sub-rotating bodies 10 can be synchronously rotated. As described above, the rotation of the motor 12 (main rotating body 11) is performed in a non-contact manner with each rotating shaft 1 (sub rotating body 1).
0), the energy loss at the contact area,
An increase in load and an increase in sound are prevented, and each rotating shaft 1
Can be smoothly rotated at high speed.

The shape, size, interval, NS pitch and the like of the main rotating body 11 and the sub-rotating body 10 can be appropriately changed according to the thickness of the yarn y to be handled, the running speed, and the like. For example,
By making the diameter of the main rotating body 11 larger than the diameter of the sub-rotating body 10 while keeping the NS pitch of the magnetized surface equal, the sub-rotating body 1 is rotated at a rotation speed higher than that of the main rotating body 11.
0 can be rotated. In addition, depending on the thickness and the traveling speed of the yarn y, each unit 4 may have two or four or more disks 5, or may have four or more rotating shafts 1 and may have four or more units 4. False twist may be simultaneously applied to two or more yarns y.

[0017]

The present invention is configured as described above.
The following effects are obtained. According to the first aspect of the present invention, since each rotating shaft is rotated by the magnetic action, there is no energy loss, increase in shaft load, increase in noise, etc. generated in the contact portion, and the speed of the rotating shaft can be increased. The quality of the yarn can be improved. According to the second aspect of the present invention, a plurality of sub-rotors can be surely and synchronously rotated by one main rotor, and the number of main rotors and motors can be reduced.
The control of the rotation drive is simpler than the case where the control is performed separately for each sub-rotating body. According to the third aspect of the invention, the magnetic action of one main rotating body can be applied to a plurality of sub-rotating bodies in the same manner, and the rotating shafts can be more reliably and easily rotated synchronously.

[Brief description of the drawings]

FIG. 1 is a front view showing a twister unit according to the present embodiment.

FIG. 2 is a plan view of a main rotator and a sub rotator viewed from below.

FIG. 3 is a main part perspective view showing another example.

[Explanation of symbols]

y ... thread, 1 ... rotating shaft, 2 ... bearing, 3 ... bracket, 4
... Disk unit, 5 ... Disk, 6 ... Spacer, 1
0: auxiliary rotating body, 10a: magnetized part (sub rotating body), 11: main rotating body, 11a: magnetized part (main rotating body), 12: motor

Claims (3)

[Claims] 1. A friction twister for applying false twist to a yarn running by a disk rotating with a plurality of rotating shafts, the main rotating body being rotated by a motor and having a magnetized surface, and attached to each rotating shaft. A friction twister, comprising: a sub-rotator having a magnetized surface facing a magnetized surface of a main rotor; and transmitting rotation of the main rotor to the sub-rotator by magnetic action. 2. The friction twister according to claim 1, wherein the magnetized surface of one main rotating body is simultaneously opposed to the magnetized surfaces of a plurality of sub-rotating bodies. 3. The main rotating body and the sub-rotating body have a disk shape, and the center of rotation of the main rotating body is located at the center of a polygon formed by the rotating centers of the plurality of sub-rotating bodies. Friction twister.