Improved movable enameled wire painting mould

Abstract

The invention provides an improved movable enameled wire painting mould, which not only can greatly lower the rejection rate of bare copper wire in the painting process and save materials, but also can reduce the labor intensity, improve the production efficiency, and ensure the painting uniformity as well the insulation performance of enameled flat copper wire. The improved movable enameled wire painting mould includes four mould bars with identical structures, wherein the four mould bars are in head-to-tail connection vertically in sequence two by two; and the connected mould bars form a closed rectangular tank. When in use, a bare copper wire to be painted passes through the rectangular tank, which is characterized in that the rectangular tank has an inner round chamfer at the four corner ends respectively.

Description

technical field [0001] The invention relates to the technical field of tooling for enameled wire processing, in particular to an improved enameled wire movable painting mold. Background technique [0002] The painting process of traditional enameled wire generally includes felt painting and mold painting. Among them, the advantages of felt painting are convenient operation and convenient exchange of wire gauge, but the viscosity of the paint is relatively high, and the paint film It is not easy to control, and the felt needs to be replaced frequently, and the insulating varnish is easily polluted, which affects the insulation performance of the enameled wire; while the mold method uses a fixed mold, see figure 1 , which includes a mold cover 14 and a mold core 15. The mold core 15 is installed in the mold cover 14 through a circlip 16. Its advantage is that the mold of the corresponding size can be selected according to different wire gauges and the yield strength of the bar...

AI Technical Summary

Problems solved by technology

[0002] The painting process of traditional enameled wire generally includes felt painting and mold painting. Among them, the advantages of felt painting are convenient operation and convenient exchange of wire gauge, but the viscosity of the paint is relatively high, and the paint film It is not easy to control, and the felt needs to be replaced frequently, and the insulating varnish is easily polluted, which affects the insulation performance of the enameled wire; while the mold method uses a fixed mold, see figure 1 , which includes a mold cover 14 and a mold core 15. The mold core 15 is installed in the mold cover 14 through a circlip 16. Its advantage is that the mold of the corresponding size can be selected according to different wire gauges and the yield strength of the bare copper wire, and the paint film The thickness is easy to control and the precision is high, but it also has the following disadvantages: each specification of enameled wire has to go through more than a dozen painting and baking processes, and each painting and baking process needs to be equipped with a corresponding painting mold, and different specifications and sizes Enameled wires have different corresponding molds, so the reuse rate of molds is low. In actual production, the demand for molds is large and the production cost is high. When processing enameled wires of different specifications, it is necessary to replace the corresponding painted molds. The copper wire is cut at each mold, and then the corresponding mold is replaced, and then the cut bare copper wire is welded and connected. The mold replacement is cumbersome and complicated, the labor intensity of the workers is high, and the efficiency is low. When changing the mold, the bare copper wire is cut and then welded. Also directly lead to the scrapping of the bare copper wires at this place, causing a large amount of waste of bare copper wires

In order to solve the problems that the above-mentioned fixed mold painting exists, a kind of movable painting mold has also occurred at present, see figure 2 , which is composed of four mold strips 17, 18, 19, 20 with the same structure vertically connected in pairs, and the bare copper wire passes through the rectangular slot 21 surrounded by the four mold strips. During use, due to the four The mold strips can be assembled and disassembled flexibly, thereby greatly reducing the scrap rate of bare copper wires, saving raw materials, reducing the labor intensity of workers, and improving production efficiency. However, due to the four corners of the rectangular slot 21 surrounded by four mold strips The end is a bevel lead angle 22. When producing enamelled copper flat wire with thicker narrow sides, the four R-angle ends of the bare copper wire cannot be evenly coated with paint film, thus affecting the insulation performance of enamelled copper flat wire

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