An in-mold swing block structure

CN224272996UActive Publication Date: 2026-05-26HENAN KUNPENG AUTOMOTIVE ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENAN KUNPENG AUTOMOTIVE ELECTRONICS CO LTD
Filing Date
2025-06-10
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies make it difficult to demold products with rolled, side-hole, or complexly bent terminals using simple top and bottom mold opening, especially since the core cannot be effectively extracted after stamping.

Method used

The design employs an in-mold swing block structure, which uses mechanical linkage to precisely insert the core into the stamping area when the mold is closed and extract it when the mold is opened. The combination of the swing block assembly and the core-pulling assembly enables precise movement and stable demolding of the core. The use of rollers and wear-resistant materials reduces friction and ensures smooth movement of the guide rod.

Benefits of technology

It achieves efficient and stable molding of complex terminal products, with roundness error controlled within ±0.02mm, extending mold life, reducing maintenance frequency, and is suitable for high-precision molding requirements.

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Abstract

This application provides an in-mold swing block structure, including an upper mold assembly and a lower mold assembly. The upper mold assembly includes, from top to bottom, an upper cover plate, an upper mold base, an upper pad plate, an upper clamping plate, a stop plate, and a stripper plate. The lower mold assembly includes, from bottom to top, a lower mold base, a lower pad plate, and a lower template plate. A swing block assembly and a core-pulling assembly are disposed between the upper mold assembly and the lower mold assembly. This application achieves precise movement of the core through the cooperation of the swing block assembly and the core-pulling assembly. During mold closing, the core moves to a preset position in the stamping forming area for precise insertion, ensuring stable product forming. During mold opening, the core is pulled out and moved away from the stamping forming area, facilitating demolding of the stamped product.
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