JPH0241183Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a threading device that can be used in a spinning device including a false twisting device, an air spinning device, etc., especially a false twisting or untwisting device equipped with a belt intersection. The present invention relates to a yarn guide device in a spinning machine equipped with a guide pipe.

<Prior art> For example, in a belt-type false twisting device, two adjacent wires intersect with each other and run in opposite directions.
A guide pipe for threading is provided between a belt-type false twisting device that nip yarn between endless belts of books to give a false twist, and a nip roller consisting of a pair of rollers located below the device. This prevents the yarn passing through the nip point from hitting the side edge of the endless belt by the balloon and strongly rubbing against the edge of the belt, causing the yarn to break and cause fuzz and loops. Now, if the thread breaks for some reason, the tip of the suction pipe is engaged with the lower end of the guide pipe for threading, and the suction force of the suction pipe is applied to the guide pipe for threading. He was suctioning the end of the body and making advances.

However, in the case of a belt-type false twisting device, an untwisting belt of an air spinning device, etc., if you want to position the tip of the guide pipe for threading sufficiently close to the nip point of the thread to ensure threading. However, fluff adheres to the threading guide pipe, resulting in deterioration of the quality of the thread. Therefore, if the distance between the nip point of the thread and the tip of the threading guide pipe is widened, the suction force of the threading guide pipe provided by the suction pipe will not act sufficiently on the nip point of the thread, and the thread It was acknowledged that there was a problem with not being able to fully intervene.

Therefore, the guide pipe for threading in this type of spinning device has an inner cylinder fitted into an outer cylinder with a sliding part that slides in contact with the inner peripheral surface of the outer cylinder, and during steady operation, the tip of the guide pipe is Although the guide pipe is located at a position away from the nip point of the thread, when the thread is cut, the inner cylinder of the guide pipe slides and extends on the inner peripheral surface of the outer cylinder until its tip is as close to the nip point as possible; At the same time, the tip of the suction pipe that has been moved is moved and joined to the lower end of the guide pipe, and the suction force of the suction pipe is applied to the guide pipe, thereby exerting suction force on the yarn near the nip point of the yarn, and pulling it out. A threading guide pipe was also devised to ensure threading.

〓Problems to be solved by the invention〓 The guide pipe for threading is made expandable and retractable, and during steady operation, the tip of the guide pipe is located away from the nip point of the thread, and fluff adheres to the tip of the guide pipe. In addition, when the thread is cut, the guide pipe extends its tip to a position as close as possible to the nip point of the thread, and at the same time moves and engages the tip of the suction pipe with the lower end of the guide pipe. Then, the suction force of the suction pipe is applied to the guide pipe so that the suction force is exerted on the cut end of the thread.The suction force of the guide pipe strongly acts on the nip point of the thread and suctions the cut end of the thread. Although it has become possible to reliably thread the thread from the beginning, there are problems such as the fly fluff scattering when threading and the fly fluff adhering to the threading guide pipe, impairing the quality of the thread. It was not possible to completely remove the points.

This invention was made with the aim of solving these problems.

〓Means for solving the problem〓 The yarn guide device in the spinning device of this invention is as follows:
A cutout groove into which the belt intersection is inserted is provided at the tip of the threading guide pipe, the tip opening of which is provided close to the belt intersection.

〓Effect〓 The guide pipe for threading is extendable and retractable, and a notch groove is provided at the tip of the inner cylinder into which the belt intersection of the untwisting device is inserted, so that the tip of the pipe is kept away from the thread nip point during steady operation. However, when the thread is cut, the tip of the inner cylinder of the guide pipe stretches until it completely fits into the intersection of the belts, and at the same time, the lower end of the guide pipe is filled with the suction pipe that has moved. By movably joining the tips and applying the suction force of the suction pipe to the guide pipe, suction force is exerted on the yarn at the nip point of the yarn.

〓Example〓 An example in which the device of the present invention is installed in a belt-type false-twisting device will be explained below with reference to the drawings, but the present invention is not limited to the belt-type false-twisting device, and can be applied to other devices equipped with a belt-type untwisting device. The same method can be applied to other spinning devices.

In FIGS. 1 and 2, reference numeral 1 denotes a belt that nips a yarn 4 between two adjacent belts 2 and 3 that intersect with each other and run in opposite directions to impart false twist to the yarn 4. An arm 6 extending from a frame 5 supporting the false-twisting device 1 is placed between a nip roller (not shown) consisting of a pair of rollers located below the false-twisting device 1. L-shaped bracket 8 fixed with screw 7 to
The threading guide pipe 9 of the present invention is fixed by this.

The threading guide pipe 9 is composed of an outer cylinder 10 and an inner cylinder 12 having a sliding portion 11 that slides in contact with the inner circumferential surface of the outer cylinder 10. Inner cylinder 12 bored in hemispherical bottom 13 of 10
The inner surface of the outer tube 10 is supported through an opening 14 with a diameter equal to the outer diameter of the inner tube 12 and an opening 16 with a diameter equal to the outer diameter of the inner tube 12 bored in a cap 15 screwed onto the outer tube 10. A cylindrical sealed space 17 is formed between the inner cylinder 12 and the outer peripheral surface of the inner cylinder 12. and the inner cylinder 12
As shown in Figure 3, the tips of the
A cutout groove 18 is provided into which the intersection of the two adjacent belts 2 and 3 running in opposite directions is inserted. Further, the cylindrical sealed space 17 has an attachment that surrounds the outer periphery of the inner tube 12, is locked at both ends by the sliding portion 11 and the cap 15, and extends in a direction that causes the inner tube 12 to protrude from the hemispherical bottom portion 13. A helical spring 19 with force is provided. Furthermore, a stepped portion 20 is formed on the surface of the sliding portion 11 opposite to the surface on which the spring 19 is engaged.

Now, as shown in FIG.
, and is sent to the nip roller via the threading guide pipe 9, the stepped portion 20 of the inner cylinder 12 of the threading guide pipe 9 is pressed against the bottom of the outer cylinder 10 by the biasing force of the spring 19. The tip of the inner tube 12 which is in abutment and which faces the false twisting device 1 as shown in FIG.

Now, when the thread 4 is cut due to some reason and threading is to be performed, a signal from a sensing device (not shown) is sent to the stepped portion 20 of the inner cylinder 12.
is introduced into the pump chamber 22 formed by contacting the bottom of the outer cylinder 10 through the introduction hole 23, presses the sliding part 11 against the biasing force of the spring 19, and pushes the inner cylinder 12 up. As shown in FIGS. 2 and 3, the notched groove 18 at the tip of the inner cylinder 12 is inserted into the intersection of the belts 2 and 3. At the same time, the suction pipe 24 is rotated by the signal to fit the funnel-shaped tip 25 into the hemispherical bottom 13 of the outer cylinder 10, as shown in FIG. As a result, as shown in FIG. 2, the tip of the inner cylinder 12 of the threading guide pipe 9 is inserted into the notch groove 18 at the intersection of the belts 2 and 3 of the false twisting device 1, and the threading guide pipe 9 The suction force of the suction pipe 24 is applied inside the thread 4 to suction the cut end of the thread 4. Next, the suction pipe 24 rotates to the old position while gripping the thread end, and the thread 4 that has been picked out is nipped by the nip roller, completing threading.

At the same time, the sliding part 1 is introduced into the pump chamber 22.
1 and the pressurized air that was pushing up the inner tube 12 is removed, and the inner tube 12 returns to its old position shown in FIG. returned to a position away from the point.

As for the suction by the suction pipe 24, the conventional type in which the air inside the pipe is suctioned from the base of the suction pipe 24 by a suction device can be applied as is, but in particular, as shown in FIG. A conduit 26 is connected to the tip of the suction pipe 24, and an annular cavity 27 and an opening 28 that is connected to the cavity 27 and faces inward of the suction pipe 24.
The nozzle member 29 is connected to the suction pipe 2.
4 and blows out compressed air from the conduit 26 through the opening 28 into the suction pipe 24.
A strong suction force is generated at the tip opening of the suction pipe 24, and a strong suction force is exerted inside the threading guide pipe 9, thereby making it possible to more reliably thread the thread.

Although a belt-type false twisting device has been described as the above embodiment, it can be installed in various spinning devices such as an air spinning device equipped with an untwisting belt in the same manner as in the above embodiment.

<Effects of the invention> As described in detail above, the yarn guide device in the spinning apparatus of this invention has a threading guide pipe provided with its end opening close to the belt intersection, and the belt is attached to the tip of the threading guide pipe. By providing a notched groove into which the intersection is inserted, the tip of the guide pipe is located away from the nip point of the thread during steady operation, which prevents fluff from adhering to the tip of the guide pipe. When the guide pipe is cut, the guide pipe extends until its tip fits into the nip point of the thread,
At the same time, the tip of the suction pipe is movably engaged with the lower end of the guide pipe to apply the suction force of the suction pipe to the guide pipe, so that the suction force is exerted on the cut end of the thread, so that the suction force of the guide pipe is It strongly acts on the nip point of the thread and suctions the cut thread end,
It is now possible to reliably thread the thread through the thread, increasing the success rate, and completely preventing the scattering of fluff during threading and the adhesion of fluff to the guide pipe.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional side view of a false twisting device equipped with the yarn guide device of the present invention during steady operation, and Fig. 2 is a false twisting device equipped with the yarn guide device of the present invention during threading of the yarn. FIG. 3 is an enlarged sectional view of the tip of the threading guide pipe in the thread guide device of the present invention into which the belt crossing portion of the false twisting device is inserted. DESCRIPTION OF SYMBOLS 1... Belt type false twisting device, 4... Yarn, 9... Guide pipe, 10... Outer cylinder, 11... Sliding part, 1
2... Inner cylinder, 15... Cap, 17... Cylindrical sealed space, 18... Notch groove, 19... Spring, 20... Step portion, 24... Suction pipe.

Claims (1)

[Scope of utility model registration request] A thread guide device for a spinning machine, wherein a cutout groove into which the belt intersection is inserted is provided at the tip of a threading guide pipe, which is provided with a tip opening close to the belt intersection.