度塑料件。为此在设计模具时必须从模具结构上保证推顶机构推顶塑料件时不会发生变形。同时在加工时努力改善型腔、型芯等部位的粗糙度,以保证塑料件在无牵连的状态下顺利脱模。总的来说,整体模塑成形材料模具推顶机构的结构与热塑性塑料模具相似。但由于收缩率小,塑件可能滞留在动模和定模的任何一方,为此需采用图15所示的双向推杆顶出结构,以便均衡地将塑件从型 Degree of plastic parts. For this reason, when designing the mold, the structure of the mold must be ensured that the pushing mechanism will not deform when pushing the plastic part. At the same time efforts to improve the processing cavity, core and other parts of the roughness, to ensure that plastic parts in the uninterrupted state smooth demolding. In general, the overall molding material mold ejector structure and thermoplastic mold similar. However, due to small shrinkage, plastic parts may remain in the dynamic and fixed mold on either side, this need to use the two-way push rod push-out structure shown in Figure 15, in order to balance the plastic from the type