塑料科技2024，Vol.52Issue(11)：130-135,6.DOI:10.15925/j.cnki.issn1005-3360.2024.11.025
基于Moldflow的汽车前保险杠大型精密注塑模具设计
Design of Large Precision Injection Mold for Automotive Front Bumper Based on Moldflow
摘要
Abstract
Using Moldflow software to analyze and optimize the mold flow of a automotive front bumper,combined with simulation analysis results and the structural characteristics of the plastic parts,an 8-point needle valve gating system was designed to achieve equal velocity of the melt flow front and achieve balanced mold filling.In order to solve the problem of plastic parts being pulled and stuck to the fixed mold cavity after mold opening caused by multiple front rib positions of the product,an innovative anti plastic part sticking fixed mold mechanism with"bent pin+movable pressure block+reset rod"was designed.The mechanical core pulling mechanism of"large inclined top+push block+T-shaped block+movable pull rod"has successfully solved the problem of small space and difficult demolding of the reverse buckle core pulling at both ends of the plastic part.The core pulling mechanism of"spring block+guide rod+nitrogen spring"solved the problem of plastic fixed mold reverse buckle demolding.The problem of adjusting the imbalance of large molds installed in injection molding machines has been solved by designing a"gear+balance block"mechanism.Adopting a combined cooling water circuit structure,the mold temperature was uniform.A combined demolding mechanism that can be ejected in two stages was designed,with high efficiency and safety reliability.After production verification,the mold runs smoothly and the dimensions of the plastic parts met the accuracy requirements.关键词
汽车前保险杠/防粘定模机构/斜顶内置推块/顺序阀热流道/模流分析Key words
Automotive front bumper/Anti stick fixed mold mechanism/Inclined top with built-in push block/Hot runner of sequence valve/Mold flow analysis分类
化学化工引用本文复制引用
张留伟,符立华,洪维,吕志超,杨国峰..基于Moldflow的汽车前保险杠大型精密注塑模具设计[J].塑料科技,2024,52(11):130-135,6.基金项目
浙江省一般科研项目(Y202352555) （Y202352555）
台州市科技计划项目(23gyb32) （23gyb32）
台州科技职业学院青年专项项目(23QNZ05) （23QNZ05）
台州市科技计划项目(24gyb30、24gyb27、24gyb28) （24gyb30、24gyb27、24gyb28）
