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文章编号：1001-4934(2016)04-0030-06
Die and Mould Technology No. 4 2016
基于Moldflow注塑件翘曲分析及工艺优化
杨忠坤，缪炳荣，史艳民，谭仕发，李旭娟
（西南交通大学牵引动力国家重点实验室，四川成都610031）
摘要：以一款测试仪下盖板为研究对象进行翘曲缺陷分析，确定注塑件开裂的原因。首先，通过对注塑件三维原模型进行针对性的结构修改，对修改前后的模型分别进行模流分析；其次，重点对注塑件结构尺寸、模具温度、注塑温度和保压曲线等工艺参数进行优化设计，使修改后注塑件翘曲变形降低；最后，结合注塑件模具成型工艺，得到最优注塑工艺数据。研究结果表明，注塑件翘曲变形量为1.032mm，存在明显
的收缩不均，为导致产品开裂的主要原因。关键词：注塑件；模流分析；翘曲；优化
中图分类号：TP391.7
文献标识码：A
Warpage analysis and process optimization of injection molded parts based on Moldflow
YANG Zhong-kun,MIAO Bing-rong, SHI Yan-min, TAN Shi-fa, LI Xu-juan
Abstract; Regarding the lower cover plate of a test instrument as the research object, the cause of cracking the plastic part was determined by the analysis of the warping defect. Firstly, through making some targeted modifications for the original 3D model, a compari-son of Moldflow analysis of the model before and after modification was carricd out. Secondly, the structure size of the injection parts, mould temperaturc, injection temperaturc and pres-sure maintaining curve and other parameters were optimized specifically, and the warping deformation of the injection molded parts was reduced. Finally, combincd with the injection molding process,the optimal injection molding process data was obtained.The results show that when the warpage amount was 1. 032mm, there were obvious shrinkage in the injection
molded parts, which was the main reason for the cracking of products. Keywords: injection parts; Moldflow analysis; warpage; optimization
统注塑方法主要依靠设计人员根据经验和一些
0引言
注塑产品趋于复杂化、精密化的生产对注塑件的尺寸及形状精度提出了新的高要求。传收稿日期：2016-02-29
基金项目：国家自然基金面上项目（51375405)。作者简介：杨忠坤（1991一），男，硕士研究生。
万方数据
计算公式进行翘曲分析，然而，在实际生产过程中，材料性能、制品和模具结构、工艺条件各异，仅凭设计经验或经验公式很难对各种影响因素进行全面综合考虑，传统的设计分析方法已不