Split type helical structure injection mold and demolding method

By using a split spiral structure injection mold and demolding method, and utilizing a demolding mechanism with a sliding block and groove, along with high-frequency vibration and spraying of a demolding agent, the problems of insufficient spiral structure strength and difficulty in mold release agent penetration are solved, achieving a fast and effective demolding process, reducing scrap rate and improving demolding efficiency.

CN122401801APending Publication Date: 2026-07-17CHENGDU YUNGEJIRUI AVIATION TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU YUNGEJIRUI AVIATION TECHNOLOGY CO LTD
Filing Date
2026-05-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When the mandrel is removed as a whole, the thin wall thickness of the existing spiral structure injection mold results in insufficient strength of the spiral structure, which easily damages the spiral structure, increases the scrap rate, and makes it difficult for the release agent to enter the mandrel, affecting the demolding effect.

Method used

A split spiral structure injection mold and demolding method are adopted. Through the split spiral mandrel design and demolding mechanism, the four sets of mandrels are successfully demolded by using the cooperation of sliders and grooves. Combined with the high-frequency vibration of the demolding head and the spraying of the demolding agent, the integrity of the spiral structure and the demolding effect are ensured.

Benefits of technology

It achieves a fast and balanced demolding process even with thin spiral structure walls, reducing scrap rate, improving demolding efficiency, and ensuring full coverage of the release agent to protect the spiral structure of the molded part from damage.

✦ Generated by Eureka AI based on patent content.

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Abstract

一种分体式螺旋结构注塑模具及脱模方法,属于注塑模具技术领域,为了解决芯轴整体取出,壁厚较薄时,螺旋结构的强度不足,会破坏螺旋结构,导致废品率升高,同时脱模剂难以进入芯轴的内部,进一步影响脱模效果的问题,分体式螺旋结构注塑模具包括下模座和固定在下模座上表面的下模板,所述下模板的上方设置有上模板,所述上模板的内部固定有上模套,本发明利用分体式螺旋结构注塑模具及脱模方式,可以实现四组芯轴的顺利脱模,能够在螺旋结构成型件壁厚较薄的情况下,在不破坏成型件螺旋结构的前提下快速脱模,同时脱模机构同时对称驱动两个螺旋芯轴,使得脱模过程对成型件的螺旋结构的作用力平衡,更好地保护成型件螺旋结构不受破坏。
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