JPH07268732A - Twisting spindle of yarn - Google Patents

Abstract

PURPOSE:To provide a twisting spindle hardly causing noise and having high durability in operation with high-speed rotation, capable of readily optimally setting ballooning tension also in changing yarn series, number of twist, etc., and thereby capable of speeding up twisting of yarn and corresponding to various yarn-twisting conditions. CONSTITUTION:In this twisting spindle coaxially arranging the upper spindle 6 having a yarn guide hole 7 for guiding a yarn from a yarn handling area formed in the center of the spindle to the circumferential edge part and the lower spindle 1 having a yarn guide hole 2 for guiding the yarn to the downward formed yarn-handling area, a driving apparatus of the upper spindle and a driving apparatus of the lower spindle are separately provided and driving of the upper rotator is carried out by magnetic force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn twisting spindle for continuously providing a real twist to a yarn that is continuously supplied. More specifically, according to the present invention, an upper spindle having a yarn guide hole that guides a yarn to a peripheral portion from a yarn guide formed in the center of a spindle and a lower spindle having a guide hole that guides a yarn to a yarn guide formed downward are coaxial. The twisted yarn spindle disposed in.

[0002]

2. Description of the Related Art As a conventional twisting spindle, Japanese Patent Publication No.
Japanese Patent Laid-Open No. 9-2389 discloses a twisting spindle in which a roller pressed against a lower spindle and a roller pressed against an upper spindle transmit a rotational force to drive the upper spindle.

Japanese Patent Publication No. 47-40100 discloses a twisting spindle in which a roller is sandwiched between a pair of upper and lower flat plates and rotations in opposite directions are transmitted through the roller.

[0004]

In these prior arts, the rotational force of the lower spindle was transmitted to the upper spindle by rollers or rollers, and there were the following problems. (1) When the type of yarn, the number of twists, etc. are changed, the balance between the ballooning tension due to the rotation of the upper spindle and the ballooning tension due to the rotation of the lower spindle is lost, so it is necessary to change the ratio of the number of rotations. It must be replaced, resulting in a decrease in operating efficiency. (2) When increasing the number of rotations of the spindle to a desired number of rotations, since the ratio of the number of rotations of the upper spindle and the lower spindle is constant, the delicate balance of the ballooning tension cannot be obtained from the low speed rotation range to the high speed rotation range. Tension increases as the rotation speed increases, causing thread breakage. (3) Noise is high during high-speed rotation, and slippage occurs between the roller or roller and the lower and upper spindles, and the rotational force of the lower spindle is not sufficiently transmitted to the upper spindle.

[0005]

SUMMARY OF THE INVENTION The present invention solves the problems associated with the above-mentioned prior art, so that it produces less noise at high speeds, has high durability, and can be easily changed even when the yarn type, the number of twists, etc. are changed. Since the ballooning tension can be set optimally,
It is an object of the present invention to provide a twisting yarn spindle capable of speeding up the twisting yarn and meeting various twisting yarn conditions.

[0006]

SUMMARY OF THE INVENTION According to the present invention, an upper spindle having a yarn guide hole for guiding a yarn to a peripheral portion from a yarn guide formed in a spindle center and a yarn guide hole for guiding a yarn to a yarn guide formed downward are provided. In a twisted yarn spindle in which a lower spindle having the same is coaxially arranged, a drive device for the upper spindle and a drive device for the lower spindle are separately provided, and the upper rotary body is driven by a magnetic force. To achieve the above objectives.

[0007]

According to the present invention, since the upper spindle driving device and the lower spindle driving device are separately provided and the upper rotating body is driven by the magnetic force, there is no contact noise of the rollers or the like, and high-speed rotation is possible. But there is little noise.

Also, the rotational speeds of the lower spindle and the upper spindle can be adjusted independently during rotation. As a result, it is possible to balance the ballooning tension of the upper spindle and the ballooning tension of the lower spindle, and it is possible to operate from a low rotation range to a high rotation range with an appropriate twisting yarn tension.

In addition, it is possible to easily deal with the imbalance between the ballooning tension caused by the rotation of the upper spindle and the ballooning tension caused by the rotation of the lower spindle, which is caused by the change of the yarn type and the twist number.

[0010]

The present invention will be described in detail below with reference to the accompanying drawings showing the embodiments of the present invention.

The lower spindle 1 has a yarn guide hole 7 extending in the longitudinal direction from the lower end to the axial center of the lower spindle 1 and extending in the circumferential direction.
Are formed. The lower spindle 1 is rotatably supported by the frame 3 via a bearing 4. The head 5 of the lower spindle 1 is fixed with a disk 5 made of a non-magnetic material and having a tapered surface that expands upward. The upper spindle 6 is formed with a yarn guide hole 7 which is formed at an axis centering downward from the upper end thereof and which is further connected to the periphery.
A disk 9 made of a non-magnetic material is fixed to the lower end of the upper spindle 6.

The lower spindle 1 and the upper spindle 6 are coaxially and rotatably supported by bearings 8.

A belt 1 is fixed to a lower end portion of the lower spindle 1 and extends along a machine base (not shown) to transmit power from a drive source (not shown) to the lower spindle 1.
1 is in contact. An annular pulley 12 is rotatably supported by the lower spindle 1 via a bearing 13. A belt 14 extends along the machine base and transmits power from a drive source (not shown) to the pulley 12. A plurality of magnets 15 are arranged on the upper surface of the pulley 12 concentrically with the shaft center, and the magnet 15 and the disk 5 form a minute gap 16. In addition, as shown in FIG. 2, different poles are arranged adjacent to each other.

A plurality of magnets 17 are arranged on the lower surface of the disk 9 concentrically with the shaft center, and a small gap 18 is formed between the magnet 17 and the disk 5.
In addition, as shown in FIG. 3, different poles are arranged adjacent to each other. The number of magnets 17 is preferably the same as the number of magnets 15.

A magnet 19 is fixed to the frame 20. Further, the magnet 21 is fixed to the stationary cover 22 so as to face the magnet 19. Magnet 1
The magnetic forces of 9 and 21 serve to stop the rotation of the stationary cover 22 accompanying the rotation of the lower spindle. The lower portion of the stationary cover 22 is tapered corresponding to the disks 5 and 9, and is supported by the disk 5 via a bearing 23 arranged between the disk 5 and the upper spindle 6.
It is coaxial with the lower spindle 1. The package holder 24 uses the bearing 25 to rotate the upper spindle 6
Is supported coaxially. The magnet 27 is fixed to the package holder 24 so as to face the magnet 26 fixed to the stationary cover 22.
The magnetic forces of 6 and 27 serve to stop the rotation of the package holder 24 accompanying the rotation of the upper spindle.

A thread 28b wound around a bobbin 28a is mounted on the package holder 24. Tensors 29a to 29b for adjusting the tension of the yarn are provided on the head of the bobbin 28a.

An upper cover 30 is detachably connected to the upper portion of the stationary cover 22. A guide 31 is provided on the head of the upper cover 30.

Reference numeral 32 indicates a balloon generated by the rotation of the upper spindle, and 33 indicates a balloon generated by the rotation of the lower spindle.

[0019]

In this embodiment, the driving direction of the belts 11 and 12 is selected and the lower spindle 1 and the pulley 12 are rotated in different directions by the power from a drive source (not shown).
Further, since the magnet 15 and the magnet 17 are opposed to the minute gaps 16 and 18 via the disk 5 made of a non-magnetic material, the pulley 12 and the upper spindle 6 are separated by the attraction and repulsion of the magnets 15 and 17. Same direction,
It rotates at the same speed. As a result, the upper spindle 6 and the lower spindle 1 rotate in opposite directions.

The yarn Y unwound from the yarn body 28b and guided from the bobbin 28a to the yarn guide hole 7 of the upper spindle 6 and exiting the yarn guide hole 7 forms a balloon 32 by the rotation of the upper spindle 6. By being guided to the guide 31, twice the number of rotations of the upper spindle 6 is applied. Thereafter, the yarn Y that has exited the guide 31 is guided to the yarn guide hole 2 of the lower spindle 1, and the balloon 33 is rotated by the rotation of the lower spindle 1.
To form.

Assuming that the rotational speed of the upper spindle 6 given a rotational force by the pulley 12 is N1, the yarn 28 passes through the tensors 29a and 29b, the yarn guide hole 7, and the outer periphery of the upper spindle 6. N for the yarn Y that appears in the section
One (twice) twist is applied. After that, when ballooning is formed and guided to the guide, N1 is applied in the same direction as the twist described above.
(Twice) twist is applied. Therefore, when the upper spindle 6 rotates N1 times, the yarn Y becomes N1 + N1 (times)
Is twisted.

In this way, the twisted yarn Y is guided to the yarn introducing hole 2 of the lower spindle 1. At this time, if the number of rotations of the lower spindle 1 is N2, like the above-mentioned twisting by the upper spindle 6, When the lower spindle 6 rotates N2, N2 + N2 (twice) twists are applied to the yarn Y.

At this time, since the upper spindle 6 and the lower spindle 1 are rotating in opposite directions, the twisting directions of the upper spindle 6 and the lower spindle 1 are the same, and 2 × (N
1 + N2) (twice) will be twisted.

In this embodiment, the lower spindle is driven by the belt, but a motor may be directly connected to the lower spindle to directly drive the motor. A plurality of holes may be provided in the horizontal portion (the portion sandwiched by the magnets) of the disk 5 so that the magnetic force cannot be prevented.

In this embodiment, the drive unit of the upper spindle 6 is
Although the opposing permanent magnets are used, as shown in FIGS. 4 and 5, one is a permanent magnet and the other is an electromagnet 34 (consisting of a coil 34a and an iron core 34b) whose magnetic pole can be changed. The upper spindle 6 may be driven by switching the magnetic poles by a device (not shown) as in the case of a so-called known transmission motor.

[0026]

Since the rotational speeds of the lower spindle 1 and the upper spindle 6 can be adjusted independently, the balance of the tension between the balloon 32 and the balloon 33 can be adjusted, and the rotational speeds of the upper spindle 6 and the lower spindle 1 can be adjusted. By changing, the tension of the balloon 33 can be adjusted to the minimum. Further, the rotational energy can be optimally adjusted by setting the lower spindle 1 with large wind loss to low rotation and the upper spindle 6 with small wind loss to high rotation.

Even when the desired number of twists changes, the number of rotations of the upper spindle 6 and the lower spindle 1 can be freely adjusted according to the number of twists, so that the operation can be performed with the optimum tension in all operating ranges. There is no need to replace the rollers like this, and the operating efficiency is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a twisting spindle according to an embodiment of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a view on arrow B of FIG.

FIG. 4 is a detailed cross-sectional view of another embodiment.

5 is a view on arrow C of FIG. 4. FIG.

[Explanation of symbols]

 1 Lower Spindle 2 Thread Guide Hole 6 Upper Spindle 7 Thread Guide Hole 15 Magnet 17 Magnet

Front page continued (72) Inventor Shinji Asaka 77 Kitayoshida-cho, Matsuyama-shi, Ehime Teijin Machinery Co., Ltd. Matsuyama factory

Claims (3)

[Claims] 1. An upper spindle having a yarn guide hole for guiding a yarn to a peripheral portion from a yarn guide formed at the center of the spindle and a lower spindle having a guide hole for guiding the yarn to a downwardly formed yarn guide are coaxially arranged. A twisted yarn spindle characterized in that, in the provided twisted yarn spindle, a drive device for the upper spindle and a drive device for the lower spindle are separately provided, and the upper rotary body is driven by magnetic force. 2. The yarn twisting spindle according to claim 1, wherein the drive device of the upper spindle is a permanent magnet facing each other. 3. A yarn twisting spindle, wherein the drive device for the upper spindle is a permanent magnet and an electromagnet whose magnetic poles can be switched.