JPS58103712A - Method of producing flat enameled wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing rectangular enameled wires, and particularly to a manufacturing method suitable for obtaining ultrafine rectangular enameled wires having a width of 20 cm or less and a thickness of 0.4 cm or less. As the 7i method of applying a predetermined thickness onto a rectangular conductor, a method of squeezing the applied enamel paint with a die or a ferrite is generally known.

1. However, the fabrication of d rectangular conductors using these methods.

The enamel paint did not adhere well to the ji area, and there is strong hope that there will be a solution to this problem. In particular, when obtaining ultra-fine rectangular enameled wires such as those described in (7) above, the thickness of the V-shaped conductor is extremely small, so the enamel paint tends to be less likely to adhere to the edges. There are problems with dielectric strength and appearance.

The present invention solves the problems of the prior art as described above, and provides a manufacturing method that allows sufficient adhesion of enamel paint to the edges of a rectangular conductor and forms an enamel film of uniform thickness over the entire circumference of the rectangular conductor. The purpose is to provide the following.

That is, the present invention is characterized in that a rectified gas is blown onto the wide rectangular conductor 1 coated with enamel paint in a direction substantially perpendicular to the running direction of the conductor, and then fired. It is.

Methods for blowing gas include blowing compressed air from a compressor, or blowing air pulsated with pressure by a vibrator.

The reason why the enamel paint adheres well to the edges and edges of the rectangular conductor by blowing gas will be explained with reference to FIG. 1.

FIG. 1(a) is a cross-sectional view immediately after applying enamel paint to the outer periphery of the rectangular conductor, and the enamel paint 2 near the edge of the rectangular conductor 1 tends to concentrate on the wide surface due to the tension of the coating 101. Enamel coating on the edges! -12 has a wide range of fluctuations.

Here, when the gas 6 is sprayed in a wide direction as shown in FIG. 1(B), the enamel maternity 2 in the wide direction flows toward the edge part, and finally, as shown in FIG. 1(C) e(- The enamel paint 2 is uniformly applied around the rectangular conductor 1 in a manner that the rectangular conductor 1 is covered.

It has a cross-sectional structure as shown in Figure 1 (c) -] Tamakashi's rectangular enamel, 11II, whose shape was maintained by immediately rising the dawn +1! will be obtained.

[Embodiment 191] of the present invention will be described below.

(6) Figure 2 is a schematic explanatory diagram of the whole, so 4 is a rectangular conductor 1
5 is an annealing device, 6 is a coating device consisting of a coating roll 7 and a paint squeezing device (dice or felt) 8, 9 is a gas blowing device, 10i, j is a baking device, and 11 is a winding device. be.

After passing through an annealing device 5, the rectangular conductor 1 is led to a coating device B, where an appropriate amount of enamel coating F-12 is applied to the outer periphery.

Next, the gas is sprayed in a device 9, in which a gas rectified in a direction approximately perpendicular to the running direction of the rectangular conductor 1 is sprayed onto the wide surface of the rectangular conductor 11 to coat the flat conductor 1 with enamel. It is uniformly adhered to the surrounding area and guided to the printing device 1io.

Here, the operations of coating, blowing gas, and baking are repeated several times to form an enamel film of an appropriate thickness, which is then rolled up.
It will be wound with 1f11.

FIG. 3 - Gas blower shows one embodiment of the device 9.

On both sides of the wide side of the rectangular conductor 1 are provided hoods 12, 13 for introducing compressed air. Inside these (4) hoods 12 and 13, there are a number of bulkheads 14 for rectifying compressed air in a direction perpendicular to the running direction of the rectangular conductor 1.
．． 15 are provided. Therefore, the compressed air from the compressor 16 is effectively blown onto the wide surface of the rectangular conductor 1, achieving the desired purpose.

17 is a pressure regulating valve, and 18 is a pressure side.

FIG. 4 shows another example of the gas blower device 9.

The hood 12.13 and partition wall 14.15 are the same as the embodiment shown in Fig. 5146, but in this embodiment, pressure pulsating air is formed by the vibration of a vibrator caused by an electric signal, and this air is The signal is transmitted over the wide width of the rectangular conductor 1. That is, the vibrators 19 and 20 are vibrated by electric signals from the control r41 device 23, and this vibration is transmitted to the vibration transmission membrane 2.
1.22, the air in the foot'+2.13 is made to pulsate in pressure and can be blown onto the wide river of the rectangular conductor 1. This method sprays rectified gas in a direction approximately perpendicular to the running direction of the conductor onto the wide surface of the flat conductor coated with enamel paint, which allows the enamel paint to stick to the edges of the flat conductor well. It becomes possible to obtain a rectangular enameled wire with excellent characteristics.

[Brief explanation of the drawings] Fig. 1 is an explanatory diagram of the state of adhesion of enamel paint to a rectangular conductor, Fig. 2 is an explanatory diagram of the entire embodiment of the present invention, and Fig. 3 is an explanatory diagram of the state of adhesion of enamel paint to a rectangular conductor. FIG. 4 is an explanatory diagram of one embodiment of the apparatus, and FIG. 4 is an explanatory diagram of another embodiment of the apparatus for blowing gas in the present invention. 1: Rectangular conductor, 2: Enamel paint, 3: Gas,
5: Annealing device, 6: Coating device, 9: Gas blowing device, 10: G8 attachment device, 12.13: Hood,
14.15: Bulkhead, 16: Compressor, 19
．． 20: Vibrator, 21.22: Vibration transmission membrane, 23:
Control device. Agent Patent Attorney Fujio Sato (6)

Claims (1)

[Scope of Claims] 1. Enamel paint is applied to the outer periphery of a rectangular conductor, then rectified gas is blown onto the wide surface of the conductor in a direction approximately perpendicular to the running direction of the conductor, and then enamel paint is applied around the conductor. A method for producing a rectangular enameled wire characterized by the fact that a firing agent is applied to the top. 2. The method for manufacturing a rectangular enameled wire according to claim 1, which comprises blowing compressed air from a compressor. 3. The method for manufacturing a rectangular enameled wire according to claim tg1, characterized in that air pulsated under pressure by a vibrator is blown.