Injection Molding
5 조회수
Difficult Demolding in PU '2079851475616104452
문제 현상
PU injection molded products have large demolding force, products deformed or scratched, demolding time accounts for 30% of the cycle
원인 분석
Adhesion between PU and mold cavity large; draft angle insufficient <0.5°; cooling time insufficient, product demolded before fully cured; ejection mechanism design unreasonable
해결 방법
1) Increase mold draft angle to 1-2°; 2) Extend cooling time to fully cure the product before demolding; 3) Polish mold surface to Ra<0.2μm; 4) Increase ejection area using large-area ejector plate; 5) Spray release agent (temporary solution)
핵심 요약
Demolding difficulty is caused by adhesion and insufficient mold design; increasing draft angle is the fundamental measure
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!