A rotating cavity control method for two-color injection molding

By dynamically controlling the multi-mode positioning unit and the interface load-bearing capacity evaluation, the positioning accuracy and coordinated control problems in rotary cavity two-color injection molding were solved, realizing high-precision and high-stability two-color injection molding, improving mass production consistency and equipment life.

CN122275260APending Publication Date: 2026-06-26YANCHENG JIANDE MOLD PLASTIC
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
YANCHENG JIANDE MOLD PLASTIC
Filing Date
2026-04-27
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing rotary cavity two-color injection molding technology suffers from insufficient rotary positioning accuracy, inadequate coordination and control of cavity state and two-shot injection process, and lack of closed-loop management throughout the entire process, resulting in molding defects and poor mass production consistency.

Method used

A multi-mode positioning unit is used for pre-rotation origin calibration, and real-time cavity data is collected for dynamic adjustment. Combined with interface load-bearing capacity evaluation and adaptive control, real-time monitoring and closed-loop control of the cavity state are realized. Process parameters are iteratively optimized through a neural network optimization model.

Benefits of technology

It improved the cavity alignment accuracy, solved the problems of mold closing misalignment and dimensional deviation, improved the interface bonding strength and molding consistency, reduced mold damage and defect rate, shortened the new product debugging cycle, and enhanced mass production stability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122275260A_ABST
    Figure CN122275260A_ABST
Patent Text Reader

Abstract

This invention discloses a rotary cavity control method for two-color injection molding, belonging to the field of precision injection molding technology. It aims to solve the technical problems of low positioning accuracy, poor process coordination, insufficient safety control, and weak adaptive optimization capability in existing two-color injection molding rotary cavities. The method sequentially executes five stages: pre-adjustment and parameter matching, real-time control of the first injection and cavity state, dynamic control of the cavity during rotation, second injection and coordinated control, and closed-loop optimization after molding. Through multi-mold positioning full-process closed-loop control, quantitative evaluation of interface load-bearing capacity, decoupled floating adaptive control, process coordinated linkage, and regional injection compensation, it achieves ultra-high precision positioning and full-process closed-loop control of the rotary cavity. This invention can significantly improve the molding yield, interface bonding strength, dimensional accuracy, and production changeover efficiency of two-color injection molded parts, and is suitable for the large-scale mass production of high-precision two-color plastic parts.
Need to check novelty before this filing date? Find Prior Art