JPS6219243B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for winding a wire onto a wire spool or the like while imparting a desired winding pattern to the wire. The present invention relates to a method of forming and winding a desired cast.

Long welding wires used for automatic or semi-automatic welding are provided in units of 10 to 20 kg or more wound onto wire spools or the like. That is, the wire is, for example, as shown in the main part broken explanatory diagram of FIG.
The winding layer of the wire spool 2 is wound in order from the winding drum peripheral surface 3a to the outer peripheral surface 3b one layer at a time. , the middle layer winding part B, and the outermost layer winding part C, it is thought that it is better to give the wire 1 in each layer a different cast diameter. That is, in the first layer winding section A, the cast diameter of the wire 1 is made smaller than the diameter of the winding drum to increase the clinging force to the winding drum circumferential surface 3a, thereby preventing the wire 1 and the winding drum 3 from slipping during the first layer winding. . Next, in the middle winding part B,
Since the wires are wound under sufficient tension, there is no need for the wires to be twisted in the sense described above, but if there is springback during the unwinding stage during welding, the wires may become entangled with each other, so this is not necessary. It is only necessary to form a relatively gentle cast diameter to the extent that it prevents. Therefore, as the winding diameter increases, the cast diameter may also be gradually increased. At the largest layer winding section C, the wire is cut as soon as winding is completed, so the tension on the wire is released, and a springback phenomenon occurs due to the wire's own elasticity, which fixes the end of the winding. becomes difficult. Therefore, if the winding end of the wire 1 is given a cast diameter smaller than the winding diameter of the outer circumferential surface 3b so that it hugs the outermost surface of the intermediate layer winding part B, at the end of winding. We thought that this would prevent the springback phenomenon and make it easier to fix the end of the winding. However, with conventional cast forming techniques, it has been difficult to put this idea into practice. That is, the second
Figure 3 is an explanatory diagram showing the conventional cast forming technology.
Reference numeral 5 indicates a cast forming roller, and reference numeral 6 indicates an auxiliary roller. The auxiliary roller 6 is supported at a position above the cast forming roller 5 so as to be able to move in the direction of the dashed line in FIG. After making one rotation along the circumferential surface of the cast forming roller, the wire is sent out to the wire spool 2, where a constant cast diameter is given. In this case, if the outer diameter of the roller 5 is made slightly smaller than the outer diameter of the winding drum, a relatively small cast will be formed by the wire making one rotation around the circumferential surface of the cast forming roller 5. Since the small cast wire 1 is fed to the wire spool 2 side while remaining inside, it is considered that this small cast wire 1 may be applied to the first layer winding section A and the outermost layer winding section C described above.

On the other hand, as shown in FIG. 2, if the auxiliary roller 6 is displaced to cross the wire traveling locus and the traveling locus of the wire 1 wound around the cast forming roller 5 is changed, the cast forming roller 5 and the wire 1 are As the length of contact between the roller 5 and the wire 1 becomes shorter, the contact time between the roller 5 and the wire 1 also becomes shorter, so that sufficient plastic deformation is not provided, and a cast diameter slightly larger than the above-mentioned cast diameter is formed. Therefore, it is considered that it is sufficient to wind this into the intermediate layer winding section B.

However, in such a cast forming method, the contact length between the cast forming roller 5 and the wire 1 is only adjusted within a range that is less than 1/2 of the circumferential length of the roller 5, so the cast diameter cannot be adjusted. The range is narrow and there is actually not much difference in the size of the cast diameter. Therefore, as described above, it is not possible to obtain a cast diameter suitable for the tips of the first layer winding section A and the outermost layer winding section C, which require a cast diameter extremely smaller than that of the intermediate layer winding section B. Unable to make ideas come true.

The present invention was made as a result of various studies focusing on the above-mentioned circumstances, and aims to provide a method for reliably giving a wire a desired cast diameter.

That is, the structure of the present invention that achieves the above object is as follows:
A large cast forming roller is fixedly arranged, and between a point where the wire is fed to the roller and a point where the wire starts contacting the roller, the wire traveling trajectory from the feeding point to the large cast forming roller is traversed. A movable small cast forming roller is arranged, and when reducing the cast diameter, the small cast forming roller is moved to the wire supply point side, the wire is run along the large cast forming roller, and then the small cast forming roller is moved to the small cast forming roller. Supply it to the winding method along the
When increasing the cast diameter, the small cast forming roller is displaced to the side across the travel path, that is, to the winding direction side, and after the wire has passed around the large cast forming roller, the circumferential contact length between the wire and the small cast forming roller is The gist of this is to shorten the wire so that the desired cast diameter can be reliably given to the wire.

The configuration and effects of the present invention will be explained below based on the drawings, but the following embodiment is only one specific example.
It is within the technical scope of the present invention to change the design of the large cast forming roller and the small cast forming roller, such as the roller diameter, in accordance with the above-mentioned and below-mentioned purposes.

4 and 5 are for explaining the wire winding method according to the present invention, in which the auxiliary roller 6 is provided as a small cast forming roller 6a in the same manner as before, but so as to be able to turn over a wider range. The cast roller 5 is assumed to be a large cast forming roller 5. The wire 1 is first sent from the wire supply point 7 to the large cast forming roller 5, and after being rotated along the winding direction side 8, the wire 1 is sent to the small cast forming roller 6, and the wire 1 is sent to the circumferential surface on the wire feeding point 7 side. Then, the wire is supplied to the wire spool 2 side with or without passing the large cast forming roller 5. In this way, the small cast forming roller 6a
is arranged between the wire contact start point P of the large cast forming roller 5 and the wire supply point 7, and in a state in which damage is not caused to the wire running trajectory between them,
After passing through the large cast forming roller 6, the wire 1 comes into contact with the circumferential surface of the small cast forming roller 6a for a long time. Therefore, after the wire 1 is given a large cast by the large cast forming roller 5, it is bent even more strongly by the small cast forming roller 6a, so the wire 1 that has passed through the small cast forming roller 6a has a considerably large bend. That is, a small cast is given. The wire 1 that has passed through the small cast forming roller 6a is fed to the wire spool 2 side while retaining the cast diameter. In addition, if the upper surface line T of the large cast forming roller 5 is higher than the upper surface line t of the small cast forming roller 6a, the wire 1 after passing through the small cast forming roller 6a is on one side of the circumferential surface of the large cast forming roller 5. However, as long as the contact is approximately tangential, there is no risk of affecting the cast diameter given to the wire.

Next, when increasing the cast diameter, as shown in FIG. 5, the small cast forming roller 6a is displaced in the winding direction so as to cross the traveling locus of the wire 1 described above. Therefore, the wire 1 sent out from the wire supply point 7 travels in a completely opposite direction to that in the previous embodiment. That is, since the wire 1 is scooped up by the small cast forming roller 6a, the wire 1 is scooped up by the small cast forming roller 6a.
The wire travels along the circumferential surface 9 on the winding direction side, reaches the large cast forming roller 5, runs along the circumferential surface 10 on the supply point side, and is then fed to the wire spool 2 side. Therefore, the wire 1 is given a small cast diameter by the small cast forming roller 6a, but then it runs long along the outer circumferential surface of the large cast forming roller 5, so the cast diameter of the wire 1 is changed to the large cast forming roller 5. This will correct the cast diameter to a large one. That is, the present invention actively utilizes the phenomenon that the cast diameter given to the wire 1 depends on the cast roller that comes into contact with it last. When giving the maximum cast diameter, the upper surface lines T and t are set at a higher position so that the wire 1 after passing through the large cast forming roller 5 does not come into contact with the small cast forming roller 6a again. It is necessary to ensure the amount of displacement of the roller 6a so that

FIG. 6 is an explanatory view of a state in which the top surface line t is higher than the top surface line T, and shows a case in which the cast diameter is formed to be slightly smaller than the cast diameter obtained in FIG.
That is, the wire 1 that has passed through the large cast forming roller 5
is given a large cast diameter by the roller 5, but then undergoes plastic deformation in the direction of returning the cast by the small cast forming roller 6a that comes into rotational contact, so that the cast diameter formed by the roller 5 becomes the large cast diameter. The cast diameter is corrected to the side, and the cast diameter is eventually formed to be approximately intermediate. Furthermore, wire 1 in Fig. 6
Since the second contact length (QH) is shorter than the contact length (SR) with the small cast forming roller 6a in the case of FIG. 4, the amount of correction of the cast diameter is smaller than in the case of FIG. The influence of the large cast that formed before that remains and it remains as an intermediate cast.

In this way, the present invention is configured to form a small cast diameter and a large cast diameter using two cast forming rollers, and to freely change the wire running route, so that the initially given cast diameter and the later contact This can be corrected by using a cast forming roller that
It has become possible to freely provide a cast diameter ranging from a considerably large cast diameter to a considerably small cast diameter. Therefore, the first layer winding section A and the outermost layer winding section C can supply wire with a small cast diameter to eliminate phenomena such as poor winding and spring back, and are each optimal for the middle layer winding section. By providing a cast diameter of , it became possible to smoothly unwind the wire during welding.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing a wire wound around a wire spool, Figs. 2 and 3 are explanatory diagrams showing the wire running situation on a conventional cast forming roller, and Figs. 4, 5, and 6 are views of the present invention. FIG. 1...wire, 2...wire spool, 3...winding drum,
4... Cast forming roller, 5... Large cast forming roller, 6... Auxiliary roller, 6a... Small cast forming roller, 7... Wire supply point.

Claims (1)

[Claims] 1. In a method of winding a wire by giving it a desired winding pattern while running the wire along the circumferential surface of a cast forming roller, a large cast forming roller is fixedly arranged, and the wire feeding point to the roller and the A small cast forming roller that can be displaced so as to cross the wire running trajectory from the supply point to the large cast forming roller is arranged between the starting points of wire contact with the rollers, and when reducing the cast diameter, a small cast forming roller is arranged. Move the roller to the wire supply point side and run the wire along the large cast forming roller, then turn the small cast forming roller to feed the wire in the winding direction to increase the cast diameter. is displaced in the winding direction side so as to cross the traveling locus to shorten the length of circumferential contact between the wire and the small cast forming roller after it has passed around the large cast forming roller. How to wind the wire.