JPS60160108A - Manufacture of coil - Google Patents

Abstract

PURPOSE:To eliminate generation of unsatisfactory appearance of coils by a method wherein the flat type wire for which adhesive agent has been coated is guided by a flat type dies which performs a reciprocating movement in the axial direction of spool, thereby enabling to perform an alignment winding. CONSTITUTION:The lower part of a roller 12 is dipped in a bonding agent 10, a flat type wire 5 comes in contact with the surface of the roller 12, a felt dies 7 is always impregnated with the bonding agent, and the bonding agent is applied on the outer circumference of the flat-type wire. The next flat type dies 8 is about 0.1mm. larger than the size of the flat type insulation-covered wire, the quantity of the adhesive agent is maintained properly, and the flat type wire is guided by a traverse mechanism 13 to be used for alignment winding. When the external part 8b which is in parallel with the side 8a of the dies 8 is inserted in the recessed supporting part 14 of the mechanism 13, and the rotation of the dies 8 is prevented, thereby enabling the dies 8 to perform a vertical movement. According to this constitution, the bonding agent can be uniformly coated on the outer circumference of the flat type wire, and as no rotation of the flat type wire is generated, the adhesive strength of the coil after formation can be improved, the coil has a good appearance, and it gives an excellent workability. Especially, this constitution is advantageous in the formation of coils using a fine flat type wire.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing coils used in various electrical devices, particularly coils whose windings are fixed with an adhesive.

[Technical Background of the Invention] Conventionally, coils made by winding rectangular silk wire in an aligned manner have been used in various fields due to their advantages such as strength and space factor, and they have superior adhesive strength compared to self-bonding types. Since then, coil fixing methods using adhesives have been widely used. 9 In this method, after applying adhesive to the outer periphery of the rectangular wire using, for example, a felt die impregnated with adhesive,
It is common practice to wind the material in alignment on the winding frame.

[Problems with the background art] However, in the above method, it is difficult to make the coating uniform due to the viscosity of the adhesive or its change over time, and the unevenness of the pressing force of the felt makes it difficult to make the coating uniform.
As shown in the figure, there was a drawback that the adhesive 4 between the upper and lower felts 1.2 and the rectangular wire 3 was supplied in excess.

Furthermore, if the width/thickness ratio of the silk flat wire is close to 1,
As the rectangular wire rotates in the felt die, the adhesive is applied unevenly, causing the coil to form as shown in Figure 2.
This method has a disadvantage in that the rectangular wire 3' is not wound in an aligned manner, resulting in poor appearance.

[Objective of the Invention 1 The present invention has been made in order to eliminate the above-mentioned drawbacks,
It is an object of the present invention to provide a method for manufacturing a coil in which the amount of adhesive applied is uniform and defects in appearance due to rotation of the rectangular wire are prevented.

[Summary of the Invention 1] In other words, the method for manufacturing a coil of the present invention is to apply an adhesive to the outer periphery of an insulated rectangular wire using an adhesive applicator, and then wind the coil in an aligned manner on a winding frame. In the method for manufacturing the present invention, the rectangular wire after passing through the adhesive applicator is guided by a rectangular die that reciprocates in the axial direction of the winding frame.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 3, the rectangular wire 5 coated with insulation is supplied from a wire supply device (not shown), and the adhesive 10 contains N6
, and is wound onto a winding frame 9 via a felt die 7 and a rectangular die 8.

The adhesive supply device 6 includes a tank 11 containing an adhesive 10;
It consists of a rotating roller 12 arranged in this tank, the lower part of the roller 12 is immersed in the adhesive 10, and the flat wire 5 is in contact with the upper surface of the roller 12 to supply the adhesive 10.

The felt die 7 is always impregnated with the adhesive by this supplied adhesive, and the adhesive is applied to the outer periphery of the rectangular wire. In addition, the adhesive can be applied directly to the felt die 7.
It can also be supplied by dripping or the like.

As the adhesive passes through the felt die 7, the adhesive is applied to the outer periphery of the rectangular wire in a somewhat non-uniform manner, but is squeezed to an appropriate amount by the next rectangular die 8. This rectangular die is formed to be slightly larger than the size of the rectangular wire after insulating coating, for example, about 0.1 nm, and the rectangular wire is guided by a traverse mechanism 13 for aligning and winding using a conventional method.

In other words, the rectangular die serves to apply an appropriate amount of adhesive and position the wire, as well as to prevent the wire from rotating. in this case,
The rectangular die is preferably installed near the winding frame 9,
Also, since the adhesive acts as a 61 lubricant, it does not damage the surface of the rectangular wire.

FIG. 4 shows the state of the rectangular die 8 supported by this traverse machine 113, and as shown in FIG.
, 8b, and by inserting this outer portion 8b into the concave support portion 14 of the traverse mechanism 13, rotation of the die is prevented. This concave support portion is formed to have a width slightly larger than the thickness of the die in order to allow the rectangular die 8 to move up and down. Note that the reference numeral 15 indicates an adhesive applied to the outer periphery of the rectangular wire 5.

[Effects of the Invention] As described above, according to the present invention, the adhesive can be uniformly applied to the outer periphery of the rectangular wire, and since the rectangular wire does not rotate, the adhesive strength of the coil after molding can be increased. It has the advantage of not only being able to obtain a good appearance but also having excellent workability, and is particularly suitable for a method of manufacturing a coil using thin rectangular wire.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a felt die part for explaining the conventional Illll determination method, Fig. 2 is a partial sectional view of a coil manufactured by the conventional method, and Fig. 3 is an example of the method of the present invention. FIG. 4 is a sectional view of the die support portion thereof, and FIG. 5 is a front view of the rectangular die used in FIG. 4. 1.2...Felt 3.3', 5...Flat wire 4.15...Adhesive 6...Adhesive supply device 7...・
・・・・・・・・・Felt dice 8・・・・・・・・・
・・・Flat die 13・・・・・・・・・Patent attorney for Traverse Mechanism Satoshi Suyama - (1 other person) Fig. 1 6 Fig. 2 Fig. 3 Fig. 4 Fig. 5

Claims (2)

[Claims] (1) In a method of manufacturing a coil by applying an adhesive to the outer periphery of an insulated flat wire using an adhesive applicator and then winding the wire in an aligned manner on a winding frame, after passing through the adhesive applicator. A method for manufacturing a coil, characterized in that the rectangular wire is guided by a rectangular die that reciprocates in the axial direction of the winding frame. (2) The method for manufacturing a coil according to claim 1, wherein the adhesive applicator comprises a felt die.