A deep cavity product injection mold with narrow position core pulling device

By designing a narrow-position core-pulling device, and utilizing the combination of a deep-cavity core-pulling seat, a limiting structure, and elastic components, the problem of high core-pulling difficulty in deep-cavity products is solved, achieving stable molding and core-pulling effects, simplifying the processing process, and reducing production costs.

CN119261117BActive Publication Date: 2026-06-02ZHONGSHAN CITY APT-MOLD MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGSHAN CITY APT-MOLD MFG CO LTD
Filing Date
2024-10-21
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The core-pulling structure of deep cavity products in the existing technology is difficult to construct, especially the narrow distance between the triangular and trapezoidal structures, which makes core-pulling inconvenient and difficult to achieve stable molding and core-pulling.

Method used

A narrow-position core-pulling device is designed, including a deep cavity core-pulling seat, a limiting structure, an elastic component, and a pull block structure. Through the cooperation of the slider structure and the limiting structure, stable core pulling and demolding of the deep cavity core-pulling seat is achieved, avoiding interference with the trapezoidal structure.

Benefits of technology

It achieves stable molding and core pulling in narrow spaces, simplifies the processing, reduces the number of parts, lowers production costs, improves production efficiency, avoids mold closing errors, and ensures good core pulling effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of mold technology, specifically disclosing a deep-cavity product injection mold with a narrow-position core-pulling device. It includes a front mold core, a rear mold core, and a mold core insert; a narrow-position core-pulling assembly is provided between the front and rear mold cores. The narrow-position core-pulling assembly includes a deep-cavity core-pulling seat slidably disposed within the mold core insert and connected to it, a limiting structure connected to the deep-cavity core-pulling seat, an elastic component disposed on the front mold core and connected to the limiting structure, a molding insert disposed at the bottom of the deep-cavity core-pulling seat, and a pull block structure disposed on the rear mold core and connected to the bottom of the deep-cavity core-pulling seat. The deep-cavity core-pulling seat includes a first molding part and a slider structure. The pull block structure and the elastic component are used to drive the deep-cavity core-pulling seat and the molding insert to perform core pulling and demolding. The limiting structure is used to limit the core-pulling distance of the deep-cavity core-pulling seat. The narrow-position core-pulling assembly of this invention completes molding and core pulling in the narrow space of the deep-cavity product, with a simple and stable structure and good molding and core-pulling effects.
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