图1为电子计算器的壳盖,是ABS塑料制成,零件表面不允许有接痕或浇口痕迹。配合部分的尺寸精度要求较高,因此塑件制品的尺寸必须十分稳定,生产批量较大,最好能一模多铸。为满足上述要求,我们采用了一种新型的浇注系统,其结构如图2。 Figure 1 for the electronic calculator shell cover, is made of ABS plastic, the surface of the part does not allow any traces or gate marks. With the part of the higher dimensional accuracy requirements, the size of plastic parts must be very stable, the production volume larger, the best can be more than a mold. In order to meet the above requirements, we have adopted a new type of pouring system whose structure is shown in Fig.2.