Environment-friendly transformer for potting epoxy resin employing lost-wax process and preparation method of environment-friendly transformer

Abstract

The invention discloses an environment-friendly transformer with a housing for potting epoxy resin employing a lost-wax process and a method for preparing the environment-friendly transformer; and the environment-friendly transformer is simple in structure, good in sealing effect and high in insulating protection capability and does not pollute the environment. The environment-friendly transformer comprises a transformer body, wherein the transformer body comprises a skeleton (1), a finished coil wound on the skeleton (1) and a silicon steel sheet (2) sleeving the skeleton (1); a plurality of connection pins (3) are arranged on the upper end surface of the skeleton (1); an integrally molded epoxy resin layer (4) coats the periphery of the overall transformer body; and the connection pins (3) are exposed on the epoxy resin layer (4) at the upper part of the skeleton (1). The preparation method comprises the following steps of (a) prefabricating a wax mold; (b) potting the epoxy resin; (c) putting the wax mold into the transformer body; and (d) removing wax and forming the transformer a demolding manner. The environment-friendly transformer can be used for the field of electronic devices.

Description

technical field [0001] The invention relates to the field of electronic devices, in particular to an environment-friendly transformer potted with epoxy resin by a lost-wax method, and a method for preparing the environment-friendly transformer by using the lost-wax method. Background technique [0002] In recent years, the electronics industry has continued to grow at a high speed, which has driven the strong development of the electronic components industry represented by electronic transformers; at the same time, the rapid development of the electronic information technology industry at home and abroad has also brought a broad market to many electronic components manufacturers. prospect. For the electronic transformer industry, the huge market not only brings a broad space for development, but also brings opportunities to promote the continuous improvement of transformer manufacturers themselves. Only by actively responding to market demand, improving product quality, impr...

AI Technical Summary

Problems solved by technology

However, since the output power of the electronic transformer is different, its external dimensions are also different, so it is necessary to prepare packaging shell molds of various specifications in advance to process the special shell for potting, and the cost is high

Epoxy resin generally requires manual operation of machine equipment to complete the potting. Affected by factors such as machine vibration, the transformer pins and the surface of the shell are easily polluted by epoxy resin, which is likely to cause poor appearance and requires more labor to clean the appearance. , requires a huge labor cost

In addition, the casing of electronic transformers is mostly processed from thermoplastic materials such as PBT, which is easily deformed due to the influence of temperature and other factors during processing, which is not conducive to the installation of the transformer, and there is a hidden danger that the casing will fall off from the transformer body; In addition, the casing used in traditional transformers is made of PBT. As a non-degradable material, PBT is difficult to recycle after the product life cycle is over, which will cause environmental pollution.

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