JPH0630872Y2 - Double twisting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a double twisting machine.

(Prior Art) The following are known as conventional double twisting machines. That is, a rotary disk having a thread guide tube in the center and a thread passage communicating with the lower portion of the thread guide tube and having an opening on the outer peripheral side, and the thread guide tube of the rotary disk do not rotate together with the rotary disk. The stationary cover body having an open upper surface, the thread guide tubular body detachably fitted in the central tubular portion of the stationary cover body, and the winding bobbin holding provided above the stationary cover body. And winding the yarn of the real bobbin stored in the stationary cover body onto the winding bobbin held by the winding bobbin holding device through the yarn guide cylinder, the yarn guide cylinder and the yarn passage. A double twisting machine made in this way is known (see Japanese Patent Laid-Open Nos. 62-14,326 and 1-92,434).

(Object of the Invention) This invention is an improvement of the above-mentioned double twisting machine, and when the yarn of the actual bobbin is cut during the twisting / winding operation, , Prevents the yarn in the actual bobbin from being unwound due to centrifugal force acting on the yarn in the yarn passage, and causing the end of the yarn protruding from the yarn passage to get caught in a fixed base frame or the like and to be scattered as yarn waste. An object of the present invention is to provide a double twisting machine having a mechanism.

(Embodiment) The present invention will be described below based on an embodiment shown in the drawings.

As clearly shown in FIG. 2, the fixed base frame 1 is provided with a large number of support cylinders 2 whose axial centers are vertically oriented at predetermined intervals in a direction perpendicular to the paper surface of FIG. A spindle 4 is rotatably fitted in the bearing via a bearing 3.
Each of these spindles 4 has a belt contact cylinder 5, and an endless drive belt 6 contacts the belt contact cylinder 5. By driving the drive belt 6, all the spindles 4 contacting the drive belt 6 can be rotated. On the upper part of the spindle 4, a turntable 8 having a thread guide cylinder 9 in the center is provided. The turntable 8 communicates with the lower portion of the thread guide cylinder 9 and has a thread passage 10 that is open to the outer peripheral side surface. A stationary cover body 13 having an open upper surface is fitted into the thread guide cylinder 9 of the rotary disc 8 via a bearing 11 in the central cylindrical portion 14 thereof so as not to rotate together with the rotary disc 8 by means to be described later. There is. The actual bobbin A is stored in the stationary cover body 13. A thread guide tubular body 16 is detachably fitted in the central tubular portion 14.

The fixed base frame 1 is provided with a horizontal fixed plate 19 having a central opening 20 surrounding the rotary disk 8 so as to form a gap between the fixed base frame 1 and the rotary disk 8 via a support 18. The horizontal fixing plate 19 is provided with a balloon control cylinder 22 so as to form a balloon gap 21 between the horizontal fixing plate 19 and the stationary cover body 13. A magnet 23 is provided on the horizontal fixing plate 19, and a magnet 24 attracting the magnet 23 is provided on the bottom of the stationary cover body 13. With such a configuration, the stationary cover body 13 does not rotate together with the turntable 8.

An air passage 25 having an upper end communicating with the yarn passage 10 and a lower end opening downward is formed in the spindle 4. By flowing air from the bottom to the top in this air passage 25,
The inside of the thread guide cylinder 9 and the thread guide cylinder 16 can be made negative pressure, and the thread Y facing the upper end of the thread guide cylinder 16 can be discharged from the thread passage 10.

As shown in FIG. 1, a drive drum 27 is rotatably provided on the fixed base frame 1 so as to be positioned above the stationary cover body 13 and has its axis centered horizontally. The take-up bobbin B is brought into contact with the take-up bobbin B, and the take-up bobbin B is held by a take-up bobbin holding device 30 having a swing arm 29 that can swing up and down about a pivot 28.

In the above, the yarn Y of the actual bobbin A accommodated in the stationary cover body 13 is the yarn guide tube body 16, the thread guide tube 9, the thread passage 10, the balloon gap 21, the guide 31, the guide 32,
The winding bobbin B is wound around the feed roller 33. It should be noted that the balloon means the rotary disk 8 between the outlet of the thread passage 10 and the guide 31.
The part that tries to expand outward with the rotation of.

All the above configurations are known.

As shown in FIGS. 3 and 4, a single-acting air cylinder 35 with the plunger 36 facing downward is provided at a portion of the fixed base frame 1 which is away from the balloon control cylinder 22 and which does not interfere with the twisting operation. The plunger 36 of the air cylinder 35 is biased upward by a spring 37. Note that another lifting device may be provided instead of the air cylinder 35. The air cylinder 35 is a cam device 38.
This cam device 38 has an air cylinder 3
5, a protruding cam follower 39 provided on the body of 5,
Plunger 36 with this cam follower 39
And a cam groove 40 formed in the. This cam groove 4
0 is the upper vertical portion 40a and the spiral portion 40 following it.
It has b and the following lower vertical part 40c.
With such a configuration, when the plunger 36 is lowered, the plunger 36 is vertically lowered, and is lowered or swung in the counterclockwise direction in FIG. 3, and is also lowered. When the jar 36 is raised, it vertically ascends, and ascends in the clockwise direction in FIG. 3 and vertically ascends. The setting of the horizontal turning angle of the plunger 36 will be described later.

A horizontal arm 41 is attached to the lower end of the plunger 36, and a thread pressing protrusion 4 made of an elastic material is fitted on the lower surface of the free end of the horizontal arm 41 to the upper end of the thread guide tubular body 16.
Two are provided. The thread pressing protrusion 42 is tapered downward. The horizontal arm 41 stands by at a position where it does not interfere with the twisting operation when the plunger 36 is raised, and the thread pressing protrusion 42 is fitted onto the upper end of the thread guide cylinder 16 when the thread Y is broken. Further, the cam device 38 descends and horizontally swings by the action of the cam device 38. That is, the horizontal turning angle of the air cylinder 35 (horizontal arm 41) is an angle required to position the thread pressing protrusion 42 at the standby position above the axis of the thread guide tubular body 16. Further, in a state where the thread pressing protrusion 42 is located above the axis of the thread guide cylindrical body 16, the spiral portion 40 is arranged so that the thread pressing protrusion 42 does not collide with or buffer the thread guiding cylindrical body 16.
The position of the upper end of b is set. With such a configuration, the thread pressing protrusion 42 can be fitted into the thread guide cylindrical body 16 to press the thread Y. Therefore, even if the thread Y of the actual bobbin A is cut during twisting and winding, The yarn Y does not fly out of the yarn passage 10 due to the centrifugal force generated by the rotation of the turntable 8.

As shown in FIG. 1, a non-contact type detector 44 (for example, a photoelectric switch or the like) is fixed so as to be positioned between the guide 32 and the feed roller 33 and detect that the yarn Y is running. It is provided on the base frame 1. This detector 4
Since the yarn 4 does not detect the yarn Y, it can be detected that the yarn Y is broken. When the detector 44 detects the yarn breakage, the working air is supplied to the air cylinder 35 based on the signal from the detector 44, and the yarn pressing protrusion 4
2 is fitted in the thread guide tubular body 16. After the rotation of the turntable 8 is stopped by the operation of the worker, the thread pressing protrusion 42 is returned to the original standby position by the valve operation of the worker.

A bell crank 47 is attached to the fixed base frame 1 by a pivot 46.
Is provided swingably, and a separating plate 50 is provided on one arm 48 of the bell crank 47.
In the normal state, the drive drum 27 and the winding bobbin B
When the rotation of the winding bobbin B is stopped because it is far from the contact portion with the yarn Y wound around the drive drum 27
And the yarn Y wound on the take-up bobbin B is inserted into the contact portion. A rod of a double-acting air cylinder 51 is pivotally attached to the other arm 49 of the bell crank 47. This air cylinder 51 is also supplied with working air to the air cylinder 35 so as to project the plunger 36 thereof, and at the same time, working air is supplied so as to project the rod of the air cylinder 51. After a predetermined time has passed since the yarn breaks, that is, after the yarn Y on the winding bobbin B side is wound on the winding bobbin B, the working air is supplied with a slight delay through a throttle valve (not shown). It is done like this.

(Effect of the Invention) The present invention has the following effects due to the above-described configuration.

When a thread breakage occurs, the lifting device is operated and the thread pressing protrusion can be fitted into the thread guide cylinder to press the thread, so even if the thread of the actual bobbin is cut during twisting or winding, The yarn can be prevented from jumping out of the yarn passage due to the centrifugal force generated by the rotation of the turntable.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a schematic view, FIG. 2 is an enlarged sectional view of an essential part, and FIG. 3 is FIG.
FIG. 4 is a sectional view taken along line IV-IV in FIG. 8 ... Rotating disk, 9 ... Thread guide tube, 10 ... Thread passage, 1
3 ... stationary cover body, 14 ... central cylinder part, 16 ... thread guide cylinder body, 35 ... air cylinder, 38 ... cam device, 39 ... cam follower, 40 ... cam groove, 41 ...
... horizontal arm, 42 ... thread presser protrusion

Claims (1)

[Scope of utility model registration request] 1. A turntable having a thread passage opening upward in the center and outward, a stationary cover body provided above the turntable so as not to rotate with it, and an open top surface, and this stationary cover body. In a double twisting machine having a thread guide tubular body fitted in the central tubular part of the horizontal arm, a thread holding protrusion fitted on an upper end of the thread guide tubular body is horizontally swingable and can be raised and lowered. A cam device having a spiral cam groove is provided between the horizontal arm and the fixed base frame so that the horizontal arm is lifted and lowered by a lifting device and horizontally oscillates as the lifting device moves up and down. Double twisting machine installed in.