JPH0416391B2 - - Google Patents

Description

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

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

This yarn splicing device inserts two yarn ends into a yarn splicing nozzle so that the yarn ends face in opposite directions.
By jetting compressed air into the splicing nozzle, the overlapping portion of the two yarn ends is subjected to vibration, entanglement, twisting, etc., and the yarn ends 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-mentioned yarn splicing device is suitable for single yarns, when splicing so-called double yarns, which are two or more single yarns twisted together, the single yarns are untwisted. However, since the parent yarn is a double yarn, it is difficult for the untwisted yarn end to become entangled with the parent yarn of the partner to be spliced.
It was difficult to form a seam that was strong enough and had a good appearance.

Therefore, the purpose of the present invention is to solve the above problems,
To 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 yarn ends together by the action of compressed fluid. A false twisting nozzle is arranged to apply compressed fluid to the parent thread.

[Operation] The overlapped yarn ends are twisted by the action of the compressed fluid from the yarn splicing nozzle, and the parent yarn portion is also twisted by the action of the compressed fluid from the false twisting nozzles placed on both sides of the yarn splicing nozzle. . 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, fibers can be twisted at the yarn ends 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 having a predetermined size and shape. YB and thread YB on the package cage side are suctioned and held by a relay pipe 2 and a suction mouth 3, respectively, and guided. Like existing devices, the yarn splicing device 1 includes a yarn splicing nozzle 4 that splices yarn 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 holes 6 and 7 are formed. In the embodiment, as shown in FIG. 3, a yarn splicing nozzle 4 is used in which injection holes 6 and 7 are formed in two stages, upper and lower, in order to generate swirling flows in mutually opposite directions. Various existing types may be used, such as one in which two injection holes 6 and 7 generate a swirling flow in the same direction, or one in which there is only one injection hole.

As shown in FIG. 2, on both sides of the yarn splicing nozzle 4, tubular untwisting nozzles 8 and 9 are arranged which suction and untwist each yarn end using the action of compressed air. On the outside are guide grooves 10, 11, 12, 13 into which the threads YB and YP guided by the relay pipe 2 and suction mouth 3 are individually inserted.
Guide plates 14 and 15 are arranged.
The threads YB and YP are inserted inside 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 respectively inserted.
Cutters 16 and 17 are arranged to cut the yarn, and the yarn ends cut by the cutters 16 and 17 are sucked into the untwisting nozzles 8 and 9.

Further, clamp devices 18 and 19 for gripping each thread YB and YP are arranged outside the guide grooves 12 and 13 into which the main thread part of the thread YB on the bobbin side and the main thread part of the thread YP on the package side are respectively inserted. ing. A yarn shifting lever 20 is arranged on the side of the yarn splicing nozzle 4 for pulling the yarns YB and YP guided by the relay pipe 2 and the suction mouth 3 onto the yarn splicing device 1.

False twisting nozzles 21 and 22 are arranged on both sides of the yarn splicing nozzle 4 to apply compressed air to the parent yarn portion YO of the yarn YB on the bobbin side and the parent yarn portion YO of the yarn YP on the package side, respectively. . False twist nozzle 2
1 and 22 are provided with a yarn splicing hole 24 having an injection hole 23 for ejecting compressed air to generate a swirling flow, similar to the yarn splicing nozzle 4. In the embodiment, as shown in FIG. It is designed to generate a swirling flow in the direction of untwisting the YO. In addition, both false twist nozzles 2
1 and 22 are 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 splicing, first, the thread YP on the package cage side is guided onto the splicing device 1 by the suction mouth 3, and part of the thread is gripped by the clamp device 19, and the thread YB on the bobbin side is also guided onto the splicing device 1 by the relay pipe 2. It is guided and gripped by the clamping device 18. Then,
The yarn shifting lever 20 moves one of the yarns YB and YP to the guide grooves 11 and 12 of the guide plates 14 and 15, the yarn splicing hole 5 of the yarn splicing nozzle 4, and the yarn splicing hole 24 of the false twist nozzle 21. The other yarn YB 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 twist nozzle 22, and is positioned as shown in FIG.

Next, each yarn YB, YP is cut at a certain distance from the clamp position by cutters 16, 17, and the cut yarn ends are sucked into untwisting nozzles 8, 9 and untwisted. At this time, the thread shifting lever 20
takes a retracted position away from the yarn, and the yarn ends are sucked deep into the untwisting nozzles 8, 9 as shown in FIG. After the untwisting process, the thread shifting lever 20 moves the thread again.
The yarn ends are pulled out from the untwisting nozzles 8 and 9 by making a large turn in the direction approaching YB and YP, so that both yarn ends are overlapped in the yarn splicing hole 5 of the yarn splicing nozzle 4. In this state, first, by applying a swirling flow in the respective twisting directions to each parent yarn portion YO using the false twisting nozzles 21 and 22, the twisting of the parent yarn portion YO between the false twisting nozzles 21 and 22 and the splicing nozzle 4 is performed. is untwisted, and then the yarn splicing nozzle 4 applies a swirling flow to the yarn end to twist both yarn ends together, and the fibers YX at the yarn end are connected to the untwisted parent thread of the partner to be spliced.
It enters between the single yarns Y1 and Y2 of YO and becomes twisted. Therefore, the strength of the seam is increased and its appearance is also improved.

In addition, although the yarn splicing device for twin yarns has been described in the embodiment, the same effect can be achieved for single yarns as well. In addition, the yarn splicing nozzle 4 and the false twisting nozzle 21,
The compressed fluid injection timing, swirling flow direction, etc. of 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 and 22 on both sides of the yarn splicing nozzle 4, but the untwisting nozzles 8 and 9 were arranged outside the false twisting nozzles 21 and 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 ends are twisted together by the yarn splicing nozzle, and the parent yarn portion is also twisted by the false twisting nozzles arranged on both sides of the yarn splicing nozzle. The fibers are twisted into the parent yarn part of the partner to be spliced, further improving the strength and appearance of the joint, and it is particularly suitable for splicing double yarns in which the parent yarn part is made by twisting two or more end yarns together. .

[Brief explanation of drawings]

FIG. 1 is a front view showing one 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 temporary nozzles.

Claims (1)

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