JPH0256381A - String connector - Google Patents

Abstract

PURPOSE:To obtain an excellent joint in appearance having string strength and without knot by arranging false twist nozzles for making compressed fluid work to master string sections at both sides of a string connection section. CONSTITUTION:At first, the twist of the master string section YO between false twist nozzles 21 and 22 and a string connection nozzle 4 is untied by making turning flow work to each of the master string section YO in the respective twisting direction by means of the false twist nozzles 21 and 22 with a string end section taken-out from the interior of a twist untying nozzle and both string end sections piled in the string connection hole of a string connection nozzle 4. In the next step, when the string connection nozzle 4 makes turning flow work to a string end section, both string end sections are twisted, and at the same time the fiber X and Y of the string end section are inserted between the single yarns Y1 and Y2 of the master string section YO of which twists are the untied mates to be connected and twisted. For this reason, the strength of a joint is increased and the appearance also becomes excellent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a yarn splicing device for splicing spun yarns by the action of compressed fluid.

[Prior Art] A yarn splicing device that splices two yarn ends by applying compressed driftwood to the mutually overlapping yarn ends is
This is already known from Japanese Patent Application Laid-Open No. 61-25877.

This yarn splicing device inserts two yarn ends into a yarn splicing nozzle with the yarn ends facing in opposite directions, and blows compressed air into the yarn splicing nozzle to separate the two yarn ends. The overlapping parts are subjected to vibration, entanglement, heating, etc., and the end parts of the threads are spliced. According to such a yarn splicing device, it is possible to obtain a seam with good yarn strength and a knot-free appearance.

[Problems to be Solved by the Invention] However, although the above yarn splicing device is suitable for single yarns, when splicing so-called double yarns, which are two or more single yarns twisted together, the yarn ends are untwisted. Since the parent yarn is a double yarn, it is difficult for the untwisted yarn end to get entangled with the parent yarn of the partner to be spliced, and a seam with sufficient strength and good appearance is formed. That's difficult.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and provide a yarn splicing device that is particularly suitable for double yarns, has sufficient strength, and can provide seams with good appearance.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a yarn splicing device equipped with a yarn splicing nozzle that splices the proximal ends together by the action of compressed fluid. A false twisting nozzle is arranged to apply compressed fluid to the parent thread.

[Operation] The base ends, which are not overlapped, are twisted by the action of the compressed fluid of the yarn splicing nozzle, and the main yarn portion is also twisted by the action of the compressed fluid of the false twisting nozzles, which are disposed on both sides of the yarn splicing nozzle. It will be done.

This allows the fibers at the end of the yarn to be twisted into the parent thread of the partner to be spliced, thereby improving the strength and appearance of the seam. Therefore, in a twin yarn in which the parent yarn portion is made by twisting two or more single yarns together, the fibers at the end of the yarn can be twisted between the single yarns in the parent yarn portion.

[Example] Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 shows an example in which a yarn splicing device 1 is installed in a winder that rewinds yarn YB from a spinning bobbin B into a package P of a predetermined size and shape. YB
and the yarn YP on the package side are suctioned and held by the relay pipe 2 and the suction mouth 3, respectively, and guided.

Like existing devices, the yarn splicing device 1 includes a yarn splicing nozzle 4 that splices the proximal ends together by the action of compressed fluid. The yarn splicing nozzle 4 has a yarn splicing hole 5 into which the yarn end on the bobbin side and the yarn end on the package side are inserted so as to be stacked so as to face in opposite directions, and compressed air is jetted into the yarn splicing hole 5. injection hole 6,
7 is formed. In the embodiment, as shown in FIG.
The yarn splicing nozzle 4 is formed in two stages, upper and lower.
Various existing types of yarn splicing nozzle 4 can be adopted, such as one in which two injection holes 6.7 generate a swirling flow in the same direction, or one in which there is one injection hole.

As shown in FIG. 2, on both sides of the yarn splicing nozzle 4, tubular untwisting nozzles 8.9 are arranged which suction and untwist the ends of the respective yarns by the action of compressed air. On the outside of 9 are guide grooves 10 and 1 into which the threads YB and YP guided by the relay pipe 2 and suction mouth 3 are individually inserted.
A guide plate 14.15 having numbers 1, 12.13 is arranged.

Guide grooves 10 and 11 into which the thread ends of the thread YB on the relay pipe side and the thread ends of the thread YP on the suction mouth side are inserted, respectively.
Inside is a cutter 1 for cutting each thread YB and YP.
6.17 are arranged so that the yarn ends cut by each cutter 16.17 are sucked into the untwisting nozzle 8.9.

In addition, the main thread part of the thread YB on the bobbin side and the thread YB on the package side
On the outside of the guide grooves 12 and 13 into which the parent threads of P are inserted, there is a clamp device that holds the multi-threads YB and YP! 18.1
9 is placed. A yarn Y guided by a relay pipe 2 and a suction mouth 3 is placed on the side of the yarn splicing nozzle 4.
B, Yarn shifting lever 20 that pulls YP onto the yarn splicing device 1
is located.

On both sides of the yarn splicing nozzle 4, the yarn YB on the bobbin side is provided.
False twisting nozzles 21 and 22 are arranged to apply compressed air to the parent yarn portion YO of the package-side yarn YP and the parent yarn portion YO of the package-side yarn YP, respectively. The false twisting nozzles 21 and 22 have injection holes 2 that eject compressed air to generate a swirling flow, similar to the yarn splicing nozzle 4.
In the embodiment, as shown in FIG. 3, a swirling flow is generated in the direction of untwisting each parent yarn portion YO. Also, both false twist nozzles 21.
22 is arranged separately from the yarn splicing nozzle 4 so as not to be affected by the swirling flow of the yarn splicing nozzle 4.

Next, the operation of the embodiment will be described.

When performing yarn splicing, first, the yarn YP on the package side is guided onto the yarn splicing device 1 by the suction mouth 3, a part of the yarn is gripped by the clamp device 19, and the yarn YB on the bobbin side is
6 is guided by the relay pipe 2 and held by the clamp device 18.Then, the multi-yarn Y
Among yarns B and YP, one yarn YP is guided and inserted into the guide grooves 11 and 12 of the guide plate 14.15, the yarn splicing hole 5 of the yarn splicing nozzle 4, and the yarn splicing hole 24 of the false twist nozzle 21, and the other yarn Y
B is also inserted into the guide grooves 10, 13, the yarn splicing hole 5 of the yarn splicing nozzle 4, and the yarn splicing hole 24 of the false twisting nozzle 22, and is positioned as shown in FIG.

Next, the multi-filaments YB and YP are cut at a certain distance from the clamp position by the combs 16 and 17, and the uncut thread ends are sucked into the untwisting nozzles 8 and 9 and untwisted. At this time, the yarn shifting lever 20 assumes a retracted position away from the yarn, and the yarn end is sucked deep into the untwisting nozzle 8.9 as shown in FIG. After the untwisting process, the thread shifting lever 20 moves the thread YB again.

The untwisting nozzle made a large turn in the direction approaching YP 8.9
The yarn end is pulled out from inside 1 so that both yarn ends are overlapped in the yarn splicing hole 5 of the yarn splicing nozzle 4.

In this state, first, each main yarn portion YO is twisted using the false twisting nozzle 21 and 22.
By applying swirling flow in each twisting direction to
The parent yarn portion YO between the false twisting nozzles 21 and 22 and the yarn splicing nozzle 4 is untwisted, and then the yarn splicing nozzle 4 applies a swirling flow to the yarn end to twist both yarn ends together.
The fibers YX at the end of the yarn enter between the single yarns Y1 and Y2 of the untwisted parent yarn portion YO of the partner to be spliced and become twisted. Therefore, the strength of the seam is increased and its appearance is also improved.Although the yarn splicing device for double yarns has been described in the embodiment, the same effect can be achieved for single yarns as well. Also,
The compressed fluid injection timing, swirling flow direction, etc. of the yarn splicing nozzle 4 and the false twisting nozzles 21 and 22 are not limited to those in the above embodiment, and various combinations can be made depending on the yarn type.

In the embodiment, the untwisting nozzles 8 and 9 were arranged at almost the same position as the false twisting nozzles 21.22 on both sides of the yarn splicing nozzle 4, but the untwisting nozzles 8.9 were arranged outside the false twisting nozzles 21.22, The yarn end portion may also be inserted into the false twisting nozzle together with the parent yarn portion.

[Effects of the Invention] In summary, according to the present invention, the yarn splicing nozzle twists the base end portions together, and the false twisting nozzles placed on both sides of the yarn splicing nozzle also apply twist to the parent yarn portion. The fibers at the end of the yarn are twisted into the parent thread of the partner to be spliced, further improving the strength and appearance of the joint, and is particularly suitable for splicing double yarns in which the parent thread is made by twisting two or more end yarns together. It is.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the yarn splicing device of the present invention, FIG. 2 is a partially sectional side view of FIG. 1, and FIG. 3 is a diagram showing a yarn splicing situation. In the figure, 4 is a yarn splicing nozzle, and 21 and 22 are false twisting nozzles. Patent applicant: Nobuo Kinuya, patent attorney representing Murata R Machine Co., Ltd.

Claims (1)

[Claims] 1. In a yarn splicing device equipped with a yarn splicing nozzle that splices yarn ends together by the action of compressed fluid, false twisting nozzles that apply compressed fluid to the parent yarn portion are arranged on both sides of the yarn splicing nozzle. Characteristic thread splicing device.