Abstract: The plastic mobile was taken up product as an example. The plastic melt flow was analyzed and simulated by moldflow software，and the mold was designed by the adoption of UG software according to the basic process of modern mold design method，which leads to reasonable injection molding parameters and the optimized mold structure．Compared with the traditional mold design method，the modern mold design method enhances the accuracy of the design and shortens the cycle of the mold design and manufacture，thus is more efficient and economical．

Key words: UG, Moldflow, Injection mold

摘要： 以手机上盖制品为例，按照现代模具设计方法的一般过程，综合运用Moldflow软件进行塑料流动分析和UG软件进行模具设计，得到了合理的注射工艺参数和优化的模具结构。与传统的模具设计方法相比，现代模具设计方法提高了模具设计的准确率，缩短了模具设计和制造周期，提高生产效率，取得了显著的经济效益。

关键词: UG, Moldflow, 注塑模具