基于Moldflow的塑料件注塑工艺分析

摘要

Injection molding is one of the molding methods for plastic products. However,defects such as short shot,warp,deformation and weld marks exist in the production process,which results in the quality decline. By using CAE technology of Moldflow software,injection molding process can be analyzed and optimized,rea-sons for those defects can be found out,and the reasonable process parameters concerning injection pressure, clamping force,flow rate,mold temperature,moulding temperature and cooling time can be obtained. The de-sign and production time of injection molding can be significantly shortened and thus the product quality can be improved, greatly reducing reliance on experience and providing guidance for practical production.%注塑成型作为塑料制品的主要成型方法之一，在现实生产过程中注塑件会存在短射、翘曲、变形、熔接痕等缺陷，造成产品质量的下降。与依靠经验多次试模来改善或避免缺陷的方法相比，采用注塑成型Moldflow软件的CAE技术对成型注塑工艺进行注塑分析、优化，找出缺陷原因，可得到合理的注塑压力、锁模力、流动速率、模具温度、成型温度、冷却时间等工艺参数值，显著缩短注塑成型设计与制造时间，同时能够提高产品质量，大大减少对经验的依赖，对生产实践有很好的指导作用。