A vacuum pressure impregnation fixture and sealing process for a complex lead magnet.

By using a composite sealing layer and mold structure, the problem of not being able to seal complex irregular wire ends and magnet bodies synchronously is solved, realizing synchronous insulation impregnation of the magnet, improving the overall insulation and safety, and reducing processing costs.

CN122136174APending Publication Date: 2026-06-02HEFEI JUNENG ELECTRO PHYSICS HIGH-TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI JUNENG ELECTRO PHYSICS HIGH-TECH DEV CO LTD
Filing Date
2026-04-15
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In the existing vacuum pressure impregnation process, complex irregular-shaped wire ends and the magnet body cannot be sealed synchronously, resulting in sealing difficulties, high hard mold processing costs, poor overall insulation, and weak insulation points, which affect the safety and lifespan of the magnet.

Method used

The composite sealing layer and mold structure, including mold base plate, mold top plate, inner mold and outer mold, combined with release cloth, flow guide net, self-melting sealing tape and glass fiber tape layer, form a flexible seal to achieve synchronous insulation impregnation of the wire head and the magnet body.

Benefits of technology

It achieves simultaneous insulation impregnation of complex irregular-shaped lead heads and magnet bodies, eliminates gaps at the sealing interface, improves overall insulation and safety, and reduces processing costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a vacuum pressure impregnation fixture for complex lead-out magnets, relating to the field of magnet processing technology. It aims to solve the technical problems of difficult sealing, inability to impregnate synchronously with the magnet body, high cost of hard mold processing, and poor overall insulation integrity during the vacuum pressure impregnation of complex, irregularly shaped lead-out magnets. The fixture includes a mold base plate, a mold top plate, an inner mold, an outer mold, and a composite sealing layer. The mold base plate and top plate are positioned by stepped grooves between the inner and outer molds. The coil is located between the inner and outer molds. The composite sealing layer is made of multiple layers of soft material wrapped around the outside of the lead-out insulation layer, adaptable to irregular lead-out structures. The sealing process achieves synchronous insulation treatment through layered wrapping of sealing material, vacuum leak detection, and pressure impregnation. This invention enables synchronous vacuum pressure impregnation of complex lead-out magnets and the magnet body, significantly improving the overall insulation integrity and uniformity of the magnet. It is also highly versatile and applicable to the insulation impregnation treatment of various irregularly shaped lead-out magnets.
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