The molding size was designed according to the average shrinkage ratio of polystyrene,demoulding mechanism of taper microgroove and arc side core-pulling mechanism was used in the mold.

• 按聚苯乙烯的平均收缩率设计计算模具成形尺寸,在模具中设计了圆锥细纹脱模机构、弧形侧抽芯机构。叙述了模具成形零件的设计与加工工艺过程、浇注系统和其它结构的设计过程,并介绍了模具工作过程。