Two-way opening combined oblique core-pulling and demolding mechanism for large automobile bumper injection mold

By using a bidirectional opening and inclined core-pulling demolding mechanism, the coordinated action of the side inclined top block and the middle top block solves the problem of incomplete detachment of the inclined top component in the bumper mold, achieving smooth demolding of the bumper, improving demolding stability and mold service life.

CN224476507UActive Publication Date: 2026-07-10浙江祥安模塑有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
浙江祥安模塑有限公司
Filing Date
2025-08-15
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing automotive bumper molds have a problem with incomplete separation of the slanted ejector assembly from the side of the bumper, especially when the material is highly viscous, leading to difficulties in demolding.

Method used

The system employs a bidirectional opening and inclined core-pulling demolding mechanism. Through the coordinated action of the side inclined top block and the middle top block, combined with the outer expansion top block assembly and the sliding inner pulling assembly, bidirectional thrust demolding of the bumper side is achieved, ensuring smooth separation.

Benefits of technology

It improves the separation effect between the bumper and the sloping top assembly, avoids the problem of poor demolding caused by insufficient thrust, enhances the stability and reliability of demolding, and extends the service life of the mold.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a bidirectional opening combined with inclined core-pulling demolding mechanism for a large automotive bumper injection mold, belonging to the field of mold technology. It includes a lower mold plate, with a forming base fixedly connected to the center of the top surface of the lower mold plate. A central top block is embedded in the forming base. Two symmetrically arranged outer surfaces on both sides of the forming base, together with the upper surface of the central top block, form a bidirectional moving inclined core-pulling mechanism for the lower forming surface. Through the cooperation of the bidirectional moving inclined core-pulling mechanism and the central top block, when the inclined top block moves obliquely upwards towards the side closer to the central top block, the sliding inner pulling component moves inwards relative to the inclined top block to achieve inner pulling separation, while the outer expanding top block component moves outwards relative to the inclined top block to apply an outward pushing force. The synergistic effect of these bidirectional reverse actions solves the problem of incomplete separation of traditional inclined top components, making the separation of the bumper side from the inclined top block smoother.
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