JPH03236208A - Manufacture of laminated-type coil - Google Patents

Abstract

PURPOSE:To prevent the floating part at the end of a film by winding the film on a bobbin or a coil, fixing the terminating end part of the winding on the starting side of the winding of a wire on the coil, and aligning and winding the wire in the winding direction of the film toward the free end side of the terminating part of the film. CONSTITUTION:A film 3-1 is pulled out of a reel and the like and cut at a specified length. The leading part of the film 3-1 at the winding end side of a wire 2 is fused (a) and fixed to a drum part 1a of a bobbin 1. The film is wound around the drum part 1a of the bobbin 1. The finishing end part of the winding on the starting side of the winding of the wire is fused and fixed. Then, the bobbin 1 is rotated, and the wire 2-1 is wound on the film 3-1, and aligning and the winding are performed. When the first-layer coil is formed, a film 3-2 which is cut at a specified length is supplied to the drum part 1a of the bobbin 1. The leading part of the film 3-2 at the finishing end part of the wire 2-1 on the bobbin is fused and fixed on the film 3-1. The same procedure is repeated. When the winding operation for the specified layers is finished, a film 3-n at the outermost layer is supplied. Both side parts of the leading edge and terminating edge are fused, attached and fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a laminated coil such as a flyback transformer used in a television receiver.

(Prior Art) Generally, in a laminated coil such as a flyback transformer used in a television receiver, a first layer of coil is formed by winding a wire material around the body of a cylindrical bobbin, and then Then, an insulating synthetic resin film or the like is wound over the coil, and a wire rod is wound in alignment on the film to form a second layer coil. It is formed by repeating this operation a predetermined number of times.

In the above-mentioned operation, as a method of forming an insulating layer by winding an insulating synthetic resin film, the film 4 cut into a rectangular shape as shown in FIG.
to fuse and fix both sides of the tip, and form the film 4.
Either wind it around the body part 1a and fix it by fusing both ends of the end part, or supply the film 5 with both ends cut diagonally as shown in FIG. The film 5 is wound around the body part 1a, and the end part is fused and fixed.

(Problems to be Solved by the Invention) In the method for forming an insulating layer as described above, in the former case, the film is stuck on both sides, and as shown in FIG. The bulge 3a occurs, making it impossible to reliably wind the wire rod, and in the latter case, the pressing width length of the film end with one wire rod becomes longer, so the film end is placed on the inner peripheral side of the film. However, in order to achieve close contact without causing lifting at the edges of the film, it is necessary to apply a large tension to the wire rod, which causes the problem that the wire rod is cut and winding cannot be done in alignment.

(Objective) An object of the present invention is to ensure that wire rods can be wound in alignment without causing any lifting at the ends of the winding film.

In order to achieve the above object, the method for manufacturing a laminated coil of the present invention involves winding wires around the outer peripheral surface of a bobbin to form a plurality of coils, and providing insulation between each coil. Therefore, when winding a film to form a laminated coil, the film is cut into a rectangular shape and wound onto a bobbin or coil, and the terminal end of the film located on the winding start side of the wire is fixed. Then, the wire is wound in the same direction as the film winding direction, and the wire is aligned and wound toward the free @ side of the terminal end of the film.

In addition, when fixing the end of the film, either rotate the bobbin while pressing the welding metal fitting onto the film, or move the welding metal fitting to bring the outermost film into close contact with the underlying film and tighten it. This can be done reliably by welding in the same state.

(Example) A method for manufacturing a laminated coil according to the present invention will be explained.

First, the film 3 pulled out from a reel or the like is cut to a preset length so that both ends are perpendicular to the length direction, and is supplied to the body 1a of the bobbin 1, and then cut to the end of the winding of the wire 2. The side of the leading end of the film 3-1 is fused and fixed to the body 1a of the bobbin 1 (Fig. 1-1), and the bobbin 1 is rotated to attach the film 3-1 to the body 1a of the bobbin 1. Wrap it around. When the winding of the film 3-1 is completed, the wire rod winding start side of the end of the film 3-1 is fused and fixed (FIG. 1-2). Next, the bobbin 1 is rotated to wind the wire rod 2-1 onto the film 3-1 to perform aligned winding (Fig. 1-3). In the aligned winding operation, the wire rod 2-1 is wound onto the film 3-1. When the film 3-1 is wound, the end of the film 3-1 is pressed against the lower film surface by the wire rod 2, and the winding end side of the wire rod 2-1 of the film 3-1 is free, so that it does not bulge during winding. The wire is wound without any occurrence. When the first layer coil is formed by this operation, the film 3 cut into a predetermined length is
-2 to the body portion 1a of the bobbin 1 to produce the film 3-2.
The end of the winding end of the wire 2-1 of the bobbin 1 is fused and fixed onto the film 3-1.
), the bobbin 1 is rotated to wind the film 3-2 onto the first layer coil. When the winding of the film 3-2 is completed, the wire rod winding start side of the end of the film 3-2 is fused and fixed (Fig. 1-5), and the second layer of wire rod 2-2 is fixed. Perform aligned winding (Figure 1-6). After the winding operation of the predetermined layer is completed, the outermost layer film 3-n
A laminated coil is obtained by supplying and fusing and fixing the tip side and both sides of the terminal end (Figure 1-7).
.

In forming the above-described laminated coil, the first layer was wound after the film was wound around the wound on the bobbin, but the first layer may also be wound directly on the wound.

In addition, if the film is welded at multiple locations in the circumferential direction close to the edge of the film, as shown in Figure 3, the edge of the film will be more securely held down by the wire rod. be able to.

The above-mentioned film winding operation is described in Japanese Patent Application Laid-Open No. 63-1642.
This can be carried out using the apparatus described in Japanese Patent No. 07.

(Effects of the Invention) The method for manufacturing a laminated coil of the present invention involves winding wires around the outer peripheral surface of a bobbin to form a plurality of coils, and winding a film between each coil for insulation. When forming the film, the film is cut into a rectangular shape and wound onto a bobbin or a coil, the terminal end of the film located on the winding start side of the wire rod is fixed, and then the wire rod is cut in the same direction as the winding direction of the film. Since the wires are wound in alignment toward the free end of the terminal end of the winding film, the ends of the winding film are not lifted up, and the wire can be reliably wound in alignment.

When fixing the end of the film, either rotate the bobbin while pressing the welding metal fitting onto the film, or move the welding metal fitting to bring the outermost film into close contact with the underlying film and tension it. This can be done reliably by welding in this state.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one embodiment of the method for manufacturing a laminated coil according to the present invention. FIG. 2 is a schematic view taken along the arrow 2 in FIG. 1. FIG. 3 is a schematic diagram showing another embodiment of the fused portion of the film. FIG. 4 is a schematic diagram showing one embodiment of a conventional method for manufacturing a laminated coil. FIG. 5 is a schematic view taken along the Y arrow in FIG. 4. FIG. 6 is a schematic diagram showing another embodiment of the conventional method for manufacturing a laminated coil. 1: bobbin, 2: wire rod, 3 film,

Claims (1)

[Claims] 1) When winding a wire around the outer peripheral surface of a bobbin to form a plurality of coils, and winding a film between each coil for insulation to form a laminated coil, the film is The film is cut into a rectangular shape and wound onto a bobbin or coil, and the terminal end of the film located on the winding start side of the wire is fixed.Then, the wire is wound in the same direction as the film winding direction and the free end of the terminal end of the film is fixed. A method for manufacturing a laminated coil characterized by winding wires in alignment toward the sides. 2) When fixing the end of the film, press the welding metal fitting onto the film and rotate the bobbin, or move the welding metal fitting to tightly attach the outermost film to the underlying film and tighten it. 2. The method for manufacturing a laminated coil according to claim 1, wherein the welding is carried out in a state in which the coils are bent.