JPS6164110A - Coil winding - Google Patents

Abstract

PURPOSE:To improve the efficiency of coil winding works and to reduce the number of parts by so winding that no connecting point exists between coils. CONSTITUTION:Starting to wind a coil 1a with a flat square wire, the winding is moved to a coil 1b after one winding. In this case, the wire is moved to the coil 1b at the position separated with a distance K in a bent state as shown in the drawing in order to avoid the contact or the overlapping of the coils of the flat square wire. In the same way, the winding is moved from the coil 1b to a coil 1c and from the coil 1c to a coil 1d. After one and a half winding in the coil 1d, the winding is moved to the coil 1c at the opposite symmetrical bending position from the bending position of winding from the coil 1a to the coil 1d. Then, the winding is moved in the reverse direction from the previous time from the coil 1c to 1b to 1a in the same way. That is, the coils 1a 1b 1 c 1d 1c 1b 1a are sequentially wound to required number of windings consecutively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a coil winding method using rectangular wire, such as a transformer for a welding machine.

[Background of the invention]

A main transformer for an AC welding machine or a DC welding machine is constructed by assembling a plurality of disk-shaped coils in separate steps.

Figures 1 and 2 show the assembled state.
As shown in the figure, a plurality of disk-shaped coils 1 & - 1 d wound using rectangular wire are combined, with an insulating spacer 2 interposed therebetween. In the figure, a to d indicate the taps of each coil, tags a and d are drawn out independently, and taps b and C are connected with bolts, etc., forming one winding coil as shown in Fig. 2. ing. Moreover, the shaded area indicates a welded area.

However, such a transformer coil constructed by combining a plurality of coils has the following problems.

(1) It is necessary to pull out the terminal wire (tap) at the end of winding and winding for each coil. Not only is it troublesome to pull out the terminal wire, but there are many cutting and connecting points, which reduces work efficiency. This is bad and also has a negative effect on the characteristics of the transformer.

(2) When tightening bolts to connect coil rows, it is necessary to drill holes or crimp terminals at the locations.

(3) When welding connections between coils, it is necessary to transport the welding equipment to the installation location or pull the welding equipment into the winding work room, which increases the number of work steps (4). Since the coils are combined, an insulating spacer must be interposed between the coils, which not only increases the number of parts but also makes assembly work troublesome.

The number of man-hours involved in assembling the coil was large, resulting in poor productivity.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art described above, improve the efficiency of coil winding work, and provide an economical coil winding method with a small number of parts.

[Summary of the invention]

In the present invention, when winding multiple rows of coils with an automatic winding machine, the most difficult point is that when winding one row of coils and moving on to the next row, the crossing points are concentrated in one place. The dimensions of the part will increase by one turn, and if there is a step when moving to the next row, it will be necessary to correct and process the coil height direction at the wadding position. We focused on the fact that concentrating on the coils would worsen the cooling effect between the rows in this area, so we completed winding one row of coils and moved on to the next row after each winding, without making any steps above or below the crossing points. The shape of the crossing position is processed only in the width direction of the coil, and the cooling effect is achieved by making one type of shape and continuously winding with only the direction of forming changed, and by shifting the position by 180 degrees for each winding. The coils can be integrated on the winding machine as a strength member by making the coils good and eliminating the potential for insulation defects caused by close contact. It is characterized by what it did.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5. FIG. 3 shows the windings of the coil assembly from above, FIG. 4 shows the coil assembly from the front, and FIG. 5 shows the coil assembly from the side.

As shown in these figures, multiple windings of the rectangular wire coil are started from the coil la in FIG. 4, and after one winding, the coil is transferred to the coil 1b. In this case, the rectangular wire coils are moved to the coil lb in the bent shape shown in the figure from a position at a predetermined distance K so that the coils do not overlap each other. In the same way, transition winding is performed from coil 1b to coil IC, from coil 1c to coil 1d, and after the first and second winding of coil ld, the bending position is opposite to that when winding from coil 1a to coil 1d. (the symmetrical bending position) is transferred to the coil 1c.

Hereafter, use the same method to wind coils lc, lb, and 1m in the opposite direction from the previous time. That is, as shown in FIG. 3, coil 1a → 1b → IC → 1d → IC → 1b → 1a
Continue winding in sequence until the desired number of turns is reached. Therefore, as shown in FIGS. 4 and 5, the coil winding frame size A.

B1 Coil wire width W1 Width between coil rows t as a constant,
Although the transition position to the next row is not shown, the bending position can be determined by calculating it in the control section of the automatic winding machine before processing.

According to the same winding method, the crossing points between the coil rows regulate the dimensions between the coil rows, and it is possible to unify the coils into a single coil by simple taping at the end of the winding. That is, unlike the conventional method, it is not necessary to connect the lead wires of each row and interpose an insulating spacer between each row, and the work of connecting the coils is eliminated.

Furthermore, the crossing portion of the coil can be used as a strength member between the coil rows, and it is also small and compact.

[Effects of the Invention] As is clear from the above-described embodiments, the coil winding method according to the present invention has no connection points between each coil, and there is no potential for welding defects or increased contact resistance as in the conventional method. There is no. Furthermore, since the winding a is completed when the coil assembly is completed, the number of winding steps is reduced to two or less compared to the conventional method, resulting in a significant cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional fill assembly, and FIG. 2 is a side view. 3 to 5 are diagrams for explaining an embodiment of the present invention, in which FIG. 3 is a diagram seen from the cross-sectional direction of a rectangular wire to explain the coil winding order, and FIG. 4 is a diagram showing the coil winding order. FIG. 5 is a front view of the assembly, and FIG. 5 is a side view. 1a-1d...Coil

Claims (1)

[Claims] In a coil winding method that consists of combining multiple rows of disk-shaped coils wound using rectangular wire, when the coil is wound once in order from the beginning of the coil winding, and then the coil is bent and moved to the next coil row. In this method, a predetermined gap is formed before the second winding, and the next coil is formed in sequence, and the winding is performed so that the crossing positions of each row are on the same line, and the final coil row is set at the crossing position of the coil row. The bending shape of the rectangular wire is reversed at a position shifted by about 180 degrees from the final coil row to the coil row on the winding start side, and the wire is wound once and 1/2 times in order, and when moving to the next coil row, the wire is wound twice. A coil winding method in which a coil is formed by forming a predetermined gap so as not to overlap the turns, and repeatedly winding the coils in sequence so that the crossing positions of each row are on the same line.