JPS6247784B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of tying together the ends of two yarns, and in particular, the binding is maintained against a tensile force applied to the yarns, but the binding portion is cut. The present invention relates to a method of forming a bundle in which the threads of the bundle are unraveled in pieces.

For example, when a roving made of untwisted bundles of multiple glass fiber monofilaments is used as a reinforcing material for reinforced plastics, it is often cut into short pieces. disconnected. To perform this cutting operation continuously, it is necessary to tie the end of one package to the tip of the next package. The knots made at this time need to hold together while the roving is being pulled towards the cutting device, but after being cut short they need to be unraveled so that no knots remain. be. As a method of making such a knot, there are the following methods: Tokuko Sho 49-41494, Tokko Sho 54-24489, Tokko Sho 54-
24490, Special Publication Showa 54-24491, etc. are known. However, the knots made by the methods described in each of these publications have a complicated structure and require a lot of effort to tie, and because the knots are large, they tend to get caught in intermediate guides before being sent to the cutting device. It has disadvantages such as being easy to peel and difficult to cut, and is not necessarily satisfactory.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method of making small knots of simple construction, which retains the knot against tension before the cutting operation, but which allows the knot to be easily unraveled after cutting. That's true.

According to the present invention, the method of tying the first thread and the second thread is to divide the first thread into three threads, make a loop with one of the threads through the curved part, and then Pass the other two threads inside the loop, one from the back to the front and one from the front to the back, pull the second thread through the curved part or the loop, and then fold it back. A method for tying yarns is provided, which comprises aligning the tip end portions of the first and second yarns and passing them through a loop formed by the root side portion of the second yarn.

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

FIG. 1 shows a state in which a first yarn or roving 1 from one package A and a second yarn or roving 7 from the other package B are tied together. In the same figure, the tip of the roving 1 from the package A is divided into three divided parts 2,
2', 2'', one divided part 2 at the left end passes through the curved part 3 to form a loop 4, and within this loop 4, connect the other two divided parts 2', 2", one of which is a loop 4. From the back to the front, pass one from the front to the back of loop 4. On the other hand, the roving 7 from the package B is hooked onto the curved portion 3 of the divided portion 2 of the roving 1 and folded back to form a curved portion 9. Next, the tip side portions 5, 5', 5'' of the three divided parts 2, 2', 2'' of the roving 1 and the tip side portion 1 of the roving 7.
0 are aligned and passed through the loop 12 formed in the base side portion 8 of the roving 7, and each tip 6, 6',
6'', 11. The tying work is thus completed. Here, the loop 12 formed at the base side portion 8 of the roving 7 is formed by twisting a part of the roving, as shown in FIG. The entire roving may be twisted to form a loop 12' as shown in FIG. , may be in loop 4.

As described above, according to the present invention, one roving is divided into three parts, and the binding is made using a loop made from one of the rovings and a loop made from the other roving, so the bundling structure is simple. Binding work is easy. Moreover, the finished knot is small,
Therefore, it has excellent advantages such as being less likely to get caught on the guide during movement, being easy to cut, and being easily unraveled into pieces by cutting.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG.
The figure is an explanatory diagram showing a modified example of the loop 12'. A, B...Package, 1,7...Roving,
2, 2', 2''...Divided part, 3, 9...Curved part, 4, 1
2, 12'...Loop.

Claims (1)

[Claims] 1 By tying the first yarn 1 and the second yarn 7, the first yarn 1 is divided into three, and one
Make a loop 4 through the curved part 3, pass two other wires 2' and 2'' into the loop 4, one from the back of the loop 4 to the front, and one from the front to the back of the loop 4, and then The second thread 7 is hooked onto the curved portion 3 or the loop 4 and then folded back, and the tip end portions 5, 5', 5'', and 10 of the first and second threads are aligned; A method of tying a yarn, characterized in that the thread is passed through loops 12, 12' formed by the base portion 8 of the second yarn 7.