A mold structure for an in-mold forming pressure-protective substrate

By introducing a rear mold movable plate and a pre-ejection spring into the mold structure, combined with limit bolts and a guide structure, the problem of damage to the substrate during mold closing was solved, achieving high yield and efficient production.

CN224489862UActive Publication Date: 2026-07-14DONG GUAN CITY HENG QIANG RUBBER PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONG GUAN CITY HENG QIANG RUBBER PROD CO LTD
Filing Date
2025-08-01
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In the secondary injection molding process, the substrate is easily damaged by the extrusion of the slider during the mold closing process, which leads to a decrease in product quality and a low yield rate.

Method used

The mold structure adopts in-mold forming to prevent damage to the substrate. By adding a rear mold movable plate and a pre-ejection spring in the rear mold assembly, a preset gap is maintained with the substrate when the mold is closed. The movement of the slider is precisely controlled by limit bolts and guide structure to avoid damage to the substrate.

Benefits of technology

It significantly improved the product yield, reduced the defect rate and production costs, enhanced the accuracy of slider movement and production efficiency, and ensured the quality of injection molded products.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224489862U_ABST
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Abstract

The utility model relates to the technical fields of injection mold, especially to a mold structure of in-mold forming anti-pressing base material, including front mould assembly and back mould assembly, back mould assembly is equipped with line position mechanism, inner lining mould core, back mould fixed plate, back mould movable plate and pre -topping spring, inner lining mould core is fixedly connected in back mould fixed plate, and inner lining mould core is equipped with base material, line position mechanism is equipped with line position cylinder and line position sliding block, and line position sliding block slidingly connects in back mould movable plate, and is transmission connection in piston rod end of line position cylinder, and one end of pre -topping spring is connected in back mould movable plate and is contacted, thereby making the elastic force of pre -topping spring drive back mould movable plate and back mould fixed plate and form certain gap between, above all, can realize the protection to base material, and the yield is greatly promoted, and the movement of accurate restriction part is guaranteed, and the stable operation is guaranteed, and the ejection reset process is optimized, and the production efficiency is improved, and the precision of double -guide promotion sliding block is guaranteed, and the product quality is guaranteed, and the comprehensive benefit is remarkable.
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