A plastic part precision forming die

CN224334970UActive Publication Date: 2026-06-09ZHANGZHOU GUANHONG INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHANGZHOU GUANHONG INTELLIGENT TECH CO LTD
Filing Date
2025-07-30
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing precision molding dies for plastic parts cannot flexibly adjust the cooling rate according to regional temperature differences during air cooling, resulting in uneven cooling rates, high internal stress in plastic parts, warping and deformation, and affecting dimensional accuracy and appearance quality.

Method used

Multiple cooling mechanisms and solenoid valves were designed, combined with a temperature monitoring and display mechanism, to monitor the mold temperature in real time and adjust the coolant flow through the solenoid valves to achieve precise cooling of the mold area. At the same time, the auxiliary heat dissipation mechanism accelerated the airflow to improve heat dissipation efficiency.

Benefits of technology

It achieves precise cooling in all areas of the mold, reduces internal stress in parts, and improves the dimensional accuracy and appearance quality of plastic parts.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a precision molding die for plastic parts, including a die frame. An upper die and a lower die are symmetrically installed inside the die frame. Multiple evenly distributed cooling mechanisms are installed inside both the upper and lower dies. Each cooling mechanism has an input pipe and an output pipe connected to its internal components at both ends. A solenoid valve is installed in the middle of the input pipe, and a liquid inlet pipe is connected to the end of the input pipe furthest from the cooling mechanism. By incorporating multiple cooling mechanisms and solenoid valves, this invention allows for the adjustment of coolant flow rates within each cooling mechanism by regulating the opening and closing of the solenoid valves. This achieves precise cooling of different areas of the die, effectively solving the problem of uneven cooling rates in existing dies leading to high internal stress in parts, resulting in warping and deformation. This significantly improves the dimensional accuracy and appearance quality of plastic parts.
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