Light guide injection mold

CN120503384BActive Publication Date: 2026-06-05NINGHAI JINHUI MOLDING CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: NINGHAI JINHUI MOLDING CO LTD
Filing Date: 2025-06-03
Publication Date: 2026-06-05

AI Technical Summary

Technical Problem

During injection molding, the structural design of the connecting end can easily cause demolding problems. Especially under strong demolding conditions, the connecting part and the positioning post are prone to breakage or deformation, affecting the yield and structural stability.

Method used

The design employs an inclined demolding inner slider, a through-support insert structure, and a step-ejection moving mold core. By using the inclined movement of the inner slider and the support of the insert, the demolding process of the light guide strip connection and the positioning post is optimized. Combined with the step-by-step action of the ejector moving mold core, it achieves precise protection and sequential demolding of complex structures.

Benefits of technology

It significantly reduces the risk of structural damage, improves demolding efficiency and molding quality, and ensures the integrity of the light guide strip and the life of the mold. It is particularly suitable for the mass production of automotive light guide components with complex connection end structures.

✦ Generated by Eureka AI based on patent content.

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Figure CN120503384B_ABST

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Abstract

The embodiment of the present application discloses a light guide injection mold, comprising a movable mold assembly, the movable mold assembly comprising: a movable mold plate, provided with an inner slide and a plurality of insert pins, the insert pins being arranged in the inner slide and being in sliding cooperation with the inner slide; a supporting plate, the supporting plate driving the inner slide to move, so that the inner slide is separated from the connecting part and the positioning column on the light guide strip; a top plate; an ejection movable mold core, fixedly connected to the top plate and having a cavity surface for forming a connecting end, the ejection movable mold core being driven to move away from the movable mold plate when the top plate is actuated; a movable insert, fixedly installed on the movable mold plate and embedded in the ejection movable mold core, the movable insert having a tooth groove structure for forming a light distribution texture. The present application provides a light guide injection mold, which introduces an inner slide with inclined demolding, an insert pin structure penetratingly supported and a movable mold core with step-by-step ejection, so as to realize precise protection and sequential demolding of the connecting part, the positioning column and the light distribution texture of the light guide strip, significantly reduce the risk of structural damage, and improve the demolding efficiency and the forming quality.

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