JPH02207511A - Method of forming tap of transformer coil - Google Patents

Abstract

PURPOSE:To enable automatic winding which continues from the main winding to the tap winding by providing a spacer between each winding at the outermost layer and an insulator, and forming space between each winding and winding each winding through a crossover conductor, and then cutting the crossover conductor so as to form a tap lead wire of the coil. CONSTITUTION:The outermost layer conductor of a main winding 7 is wound with a spacer 11 interposed at one place in the circumferential direction of a coil between itself and an interlayer insulator 5 on the inner layer side. Though the spacer 11 is inserted before winding-start of the outermost-layer conductor of the main winding 7, the length is made almost the same as the coil length, and tap windings 8a and 8b are also wound on the spacer 11. In this winding process, the drawing-out of the tap lead wire is not done, and the winding from the main winding 7 to the tap winding 8a and the one from this tap winding 8a to the tap winding 8b are wound continuously with space A, respectively. At this time, feed quantity conversion control is done by a controller to which input is set in advance. The coil which has completed winding this way is removed from an automatic winder, and the crossover conductors 14 are cut, and tap lead wires 2a and 2b are pulled out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for drawing out a tap for switching voltage in a transformer coil.

[Conventional technology]

Fig. 4 is a perspective view showing the external appearance of the transformer coil, and Fig. 6 is a partial sectional view of the coil μ. In each figure, (1) shows the main winding (7) drawn out above the upper end surface of the coil. (2a) and (2b) are the tap lead wires, (3
) is the end winding lead wire of tap winding N (8), (4) is the inner layer insulation of the coil, and on the outside there is a multi-layer main winding M (7) wound from the winding start lead (1), Interlayer insulation (5) is provided between each layer. And the main winding (7
) is a tap winding consisting of (sa) and (8b).
8) is wound, and this tap winding (8) and the main winding 41 (7
) are electrically connected, and the tap lead wire (2a) is connected from the connection part, and the tap lead wire (2b) is also connected to the middle part of the tap winding (8). ), winding end cleat wires (3) are drawn out of the coil from the upper end surface of the coil.

The outermost layer of the coil around which the main winding (7) and the tap winding 11 (8) are wound as described above is provided with outer peripheral insulation (6).

Next, tap winding (8) and tap lead 41 (2JL)
.

The configuration of (2b) will be explained. FIG. 6 is a perspective view showing how the coil p is wound. In the figure, (9)
is the main shaft of the winding machine, on which the coil μ winding form aO is attached, and the coil is wound on it. The terminal end of the main winding 1IA (7) is drawn out of the coil as a tap lead wire (2a), and is newly wound as the starting end of a tap winding (8). Therefore, the lead m (2a
) becomes the tap lead of the transformer coil. Next, tap winding wire (8a) is t-winded, and when the indicated winding is finished, the entire end is pulled out of the coil p again and the tag lead wire (2b
) T-Mold. And this tap lead wire (2b
)'! Next tap winding as the starting point @ (8b) t-
The terminal end of the final tap winding (8b) is drawn out of the coil as a winding end lead (3).

By the way, as shown in the partial drawings of tap lead wires (2a) and (2b), there are cases where nine tap lead wires (2C)'e are prepared separately from the coil-wound conductor and twisted around the coil conductor and pulled out. .

[Problem to be solved by the invention]

The conventional method for drawing out taps for transformer coils is as described above, so the tap lead M during winding work is
(2a), (2b) pull! During the unloading work, the tap lead must be pulled out by stopping the main shaft rotation of the winding machine.
Carp/I/It takes a lot of time for the winding machine to manufacture all the legs. Just in case, tap lead wires (2a), (2b)'t-t-
In the case of a drawer stand, in addition to the conductor bending work, tap lead wires (
2a), (2b) and the insulation treatment between the coil conductor and the tag lead wire (2a).

Since the fixing work in (2b) or the fixing work of the starting end of the conductor for winding is involved, the time for these tasks is high in the total winding work time, and therefore, the winding machine is closed during this work. The operation will remain in the stopped state WJAt. This leads to problems such as an increase in the number of automatic winding machines required when attempting to automate the winding work, assuming a constant winding processing capacity is secured, which increases equipment costs and the space for installing the winding machine. It was hot.

This invention was made in order to solve all of the above-mentioned problems.It enables automatic winding of the coil, completes the winding of the coil conductor in a short time, reduces equipment costs, and improves the winding speed. The purpose of this invention is to obtain a method for drawing out a tap of a transformer coil that can completely save space for installation.

[Friendly means of solving problems]

In the transformer coil according to the present invention, a spacer is provided between each winding on the outermost layer and the insulator, and a space is formed between each winding, and the windings are crossed through each other via a conductor. After winding, the tap lead wire of the coil is formed by cutting the crossover conductor.

[Effect]

In this invention, a crossover conductor is continuously wound between each winding, and after winding, the crossover conductor is cut at the next gap formed between each winding and drawn out to the outside.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. 1st
The figure is a perspective view showing the winding shape a of the winding. As shown in the figure, the outermost layer conductor of the main winding @ (7) has interlayer insulation (
5) and is wound with a spacer αη interposed at one location in the coil circumferential direction. The spacer (b) is inserted before the main winding (7) starts winding the outermost conductor, but its length is approximately the same as the coil length, and the tap windings (1) and (8b) are also placed above the spacer αη. is wound around.

In this winding process, the tap lead wire is not drawn out, and the tap lead wires are separated from the main winding (7) to the tap winding (8a) and from the tap winding (8a) to the tap winding (8b) at intervals of At- It can be wound continuously.

At this time, the loaf (6) for feeding the winding conductor is
) It is necessary to feed approximately A dimension for one rotation of the feed screw (to), but a servo motor (not shown) is used to drive the feed screw (to), and the feed rate is controlled by a control input and set in advance. . In addition, the dimensions for the feed interval are determined by tap lead wire (2a) + (2b) in the post-process of automatic coil winding.
) It is necessary to cut the crossover conductor u4 in order to draw it out, and ensure a size that allows the conductor to be cut. The coil that has been wound in this way is removed from the automatic winding machine, and as shown in Fig. 2, the tap lead wire (2a),
(2b) Pull out k.

These tap lead wires (2a) and (2b) are formed by cutting the crossover conductor α4 as described above, and forming each pair as a pair. Figure 8 shows a plan view of the coil manufactured as described above, and shows the spacer (6).
The insertion point is the tap lead wire (2a).

It is shifted from the drawer position of (2b), and each is a corner part. This is done in consideration of making the outer diameter dimensions A and Bt of the carp μ as compact as possible.

The lengthwise dimension of the spacer (6) is A in Fig. 1.
It may be smaller than the dimensions. In this case, when inserting the spacer αυ, the winding machine must be turned into a pure state, but the stoppage time is only a short time, and the time required for drawing out the tap lead wire, which is a major factor in the winding work, is significantly reduced. Shortening is possible.

Furthermore, since the spacer (b) can be removed when pulling out the py bleed m (2a), (2b), that is, after cutting the crossover conductor α, it is possible to prevent the coil from blistering.

Therefore, the spacer αη may be inserted anywhere below the WL crossover conductor (b), and is not limited to the corner portion.

By the way, in the above example, the number of tap windings (8) is 2.
(8L) and (8b), but it goes without saying that the same effects as in the above-mentioned embodiments can be obtained even with higher values.

〔Effect of the invention〕

As described above, according to the present invention, a spacer is provided between each winding of the outermost layer and the insulator, and a spacer is formed between each winding, and the windings are wound with a conductor interposed therebetween. After that, the tap lead wire of the coil is formed by cutting the above-mentioned crossover conductor, so the time-consuming work of drawing out the tap lead wire can be done after removing it from the coil A/full winding machine. , it is possible to realize continuous automatic winding from the main winding to the tap winding. As a result, the time for producing coils/I/on the winding machine can be significantly reduced,
It contributes to improving the sudden operation rate of automatic winding machines, and has the effect of reducing equipment costs and saving space for equipment installation.

[Brief explanation of the drawing]

1 and 2 are perspective views showing a method of tapping a transformer coil according to the present invention, FIG. 8 is a plan view of a coil according to the present invention, and FIG. 4 is a perspective view of a conventional transformer coil. FIG. 5 is a sectional view of the main part, FIG. 6 is a perspective view showing a conventional method for drawing out a tap of a transformer coil, and FIG. 7 is a perspective view of the main part. In the figure, (i) and (2b) are tap lead wires, (5
) is an interlayer insulation, (7) is a main winding, (8a) and (8b) are tap windings, (6) is a spacer, and α→ is a crossover conductor. In the drawings, the same reference numerals indicate the same or equivalent parts. 84.8b, Wavua marriage Hg group

Claims (1)

[Claims] In a transformer coil consisting of a multi-layer main winding wound through an insulator and a tap winding wound in the same layer as the outermost layer of the main winding, each turn of the outermost layer is A spacer is provided between the wire and the above-mentioned insulator, and a gap is formed between each winding, and after the windings are wound through a crossing conductor, the coil is tapped by cutting the crossing conductor. A method for drawing out a tap of a transformer coil, characterized by forming a lead wire.