JPS5923095B2 - Multi-section coil winding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-section coil winding machine used when the coil of a transformer or the like having a large number of windings is divided into multiple sections.

First, let me explain about the conventional two-section coil.
In Figure 1, A shows the cross section of the coil when round wire or rectangular wire is used, B shows the cross section of the coil when foil (strip) conductor is used, 1 and 2 are the coils constituting each section, 3 Reference numeral 4 indicates a connection between the coils, 4 indicates an insulating interlayer paper located between the conductors, and 5 indicates a winding shaft around which each of the above-mentioned coils 1 and 2 is wound.

The wiring diagrams for these two types of coils are both shown in Figure 1C.
It is expressed as This two-section coil has the advantage that the interlayer voltage can be lowered compared to a single-layer coil with a large number of turns, so the interlayer paper 4 can be made thinner and a smaller amount can be used. The problem becomes more noticeable as the number of windings per layer is reduced by dividing into a larger number of sections.

That is, by dividing into multiple sections, the number of windings per layer can be reduced, the interlayer voltage can be lowered, and the interlayer paper can be made thinner. However, in the case of a two-section coil, whether the two coils 1 and 2 are wound simultaneously or separately, the connection 3 between the coils can be made relatively easily, but the more sections there are, the more difficult it becomes. However, there was a problem in that the wiring work was difficult. The present invention has been made to solve this problem, and proposes a winding machine that can easily connect coils in parallel with the coil winding operation.

The invention will now be described with reference to illustrated embodiments.

Figures 2 and 3 show an embodiment in which the coil is divided into seven sections, where 5 is a winding shaft that can be rotated forward and backward, and 6
, 8, 10, 12 are coil conductor uncoilers for forward rotation; 7
, 9 and 11 are coil conductor uncoilers for reverse rotation, and the uncoilers for forward rotation and reverse rotation are arranged on the opposite side with respect to the axis of the winding shaft 5, and every other uncoiler is for forward rotation and reverse rotation along this winding shaft 5. It is arranged for convenient use. 6A to 12A are uncoilers for insulating interlayer paper that are paired with each of the uncoilers 6 to 12, respectively.

In this winding machine having the above configuration, first, the coil conductors 6, 8, 10, 12 for normal rotation are connected to the conductors 6a, 8a, 1.
0a and 12a are pulled out and their tips are attached to the winding shaft 5.

At this time, if the conductor is a round wire or a flat wire 20A, the tip is bent as shown in FIG. 4A, and if the conductor is a foil (strip) 20B, the tip is bent as shown in FIG. 4B. When these conductors are wound one turn by normal rotation of the winding shaft 5, the uncoilers 6A, 8
Pull out the insulating interlayer paper 21 from A, 10A, 12A and wind it onto the conductors 6a, 8a, 10a, 12a, and then wind the conductor and the insulating interlayer paper every other layer by normal rotation of the winding shaft 5. After winding the same number of turns, the winding is completed. next,
The conductor 7a pulled out from the coil conductor uncoiler 7, 9, 11 is placed between each coil wound by the above operation.
.
, 10a and 9a, and 12a and 11a are connected by soldering, brazing, etc. (FIG. 5). Thereafter, the winding shaft 5 is reversed, and the conductors 7a, 9a, 11a and the insulating interlayer paper 21 are wound every other layer by the specified number of windings in the same manner as when the winding shaft 5 rotates normally. lastly,
As shown in FIG. 6B, at the end of each coil, conductors 6a and 7a, 8a and 9a, 10a and 11
If a is connected by soldering, brazing, etc., the winding of the coil divided into seven sections and the connection between the coils are completed. FIG. 7 shows a wiring diagram of this coil, and reference numeral 3 indicates a wiring part. Note that FIG. 6A shows a connection state when the coil conductor is a round wire or a rectangular wire. In the above embodiment, the coil conductor and the insulating interlayer paper constituting each coil are separated into separate uncoilers 6 to 12 and 6A to 12.
Of course, if an insulated coil conductor to which a coil conductor and an insulating interlayer paper are pasted in advance is used, one of the uncoilers becomes unnecessary.

In addition, in the drawing, the uncoilers for forward rotation and reverse rotation are provided on opposite sides of the winding shaft, but if the uncoilers for forward rotation and reverse rotation are placed every other along the winding shaft, , the position of the other uncoilers does not matter. As described above, according to the winding machine of the present invention, it is possible to wind another coil between the coils that were wound when the winding shaft rotates in the normal direction, by reversing the winding shaft, so that the connection between adjacent coils can be reduced. It can be easily applied at the beginning and end of winding of a coil, and therefore a coil divided into multiple sections can be obtained with good connection workability.

[Brief explanation of the drawing]

Figures 1A and B are cross-sectional views of conventional two-section coils, Figure 1C is a wiring diagram of the coils in Figures 1A and B,
FIG. 2 is a plan view showing an embodiment of the winding machine according to the present invention;
FIG. 3 is a front view of FIG. 2, and FIGS. 4A and 4B are plan views of main parts showing the state of the coil conductor at the beginning of winding when the winding shaft rotates in the normal direction.
Fig. 5 is a plan view of the main part showing the state of the coil conductor at the beginning of winding when the winding axis is reversed, Fig. 6 is a plan view showing the connection state of adjacent coils after winding is completed, and Fig. 7 is the main part FIG. 3 is a wiring diagram of a multi-section coil formed by a winding machine. 5: Winding shaft, 6-12: Coil conductor uncoiler, 6A-1
2A: Insulating interlayer paper uncoiler, 6a to 12a: Coil conductor.

Claims (1)

[Claims] 1. A winding shaft that is rotatable in forward and reverse directions and winds a coil;
A plurality of coil conductor uncoilers are provided along the winding shaft at predetermined intervals and supply a coil conductor together with an insulating layer paper to the winding shaft when the winding shaft rotates in the normal direction. A coil conductor uncoiler for reversal is provided in each gap between the conductor uncoilers and supplies a coil conductor together with an insulating interlayer paper to the coil conductor when the winding shaft is reversed, and a plurality of coil conductor uncoilers are wound around the winding shaft in the axial direction. A multi-section coil winding machine characterized in that the winding start and winding end of a coil are connected between adjacent coils. 2. The multi-section coil winding machine according to claim 1, wherein the coil conductor uncoilers for forward rotation and reverse rotation are arranged on opposite sides with respect to the axis of the winding shaft.