Metal insert positioning mold structure for reducing expansion coefficient of injection product

By using a positioning component with a strong magnet and a high-temperature resistant resin layer, as well as an elastic clamping component, in the injection mold, the problems of unstable positioning of metal inserts and low demolding efficiency are solved, achieving high-precision positioning and automated demolding, thus improving production stability and efficiency.

CN223849835UActive Publication Date: 2026-01-30SHANGHAI PUJU PLASTIC TECH CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202520422226.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-12
Publication Date
2026-01-30
Estimated Expiration
2035-03-12

AI Technical Summary

Technical Problem

The positioning stability of metal inserts in existing injection molds is poor, the positioning accuracy is insufficient, and the demolding efficiency is low. Traditional mechanical limiting and manual operation lead to insufficient production stability and low efficiency.

Method used

The positioning components, which combine a strong magnet and a high-temperature resistant resin layer with an elastic clamping component, use magnetic force to attract metal inserts and provide flexible clamping through silicone pillars and micro springs, and combine with pneumatic ejector pins to achieve automatic demolding.

Benefits of technology

It improves the stability and positioning accuracy of metal inserts during injection molding, reduces displacement and deformation, enables automated demolding, improves production efficiency, and reduces the risk of product surface damage.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model relates to the technical field of positioning mold structures, and discloses a metal insert positioning mold structure capable of reducing the expansion coefficient of an injection molding product, which comprises a fixed mold and a movable mold, an injection molding pipe is arranged at the top of the fixed mold, an ejection mechanism is slidably connected in the movable mold, and positioning components are symmetrically arranged on two sides in the movable mold. Clamping assemblies are symmetrically arranged in the fixed mold; the positioning assembly comprises a high-temperature-resistant resin layer and a mounting groove, a powerful magnet is mounted in the high-temperature-resistant resin layer, the high-temperature-resistant resin layer is located in the mounting groove, and a cover plate is mounted at the top of the mounting groove. According to the utility model, the strong magnets are symmetrically embedded in the movable mold cavity and are coated with the high-temperature-resistant resin layer, and the metal insert is adsorbed by utilizing magnetic force, so that the stability of the metal insert in the injection molding process is ensured. Symmetrical clamping grooves are designed in the fixed mold cavity, elastic clamping assemblies are integrated, flexible clamping is provided through silica gel columns, and the inserts are prevented from loosening or deforming.
Need to check novelty before this filing date? Find Prior Art