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在设计模具时,核定塑件的重量以及投影面积,以及选择合适的注射机是十分必要的。但是模具的外形大小必须符合注射机额定的有关技术参数,这是模具能否安装于注射机上以便顺利脱模的重要条件。可安装模具的注射机外形最大尺寸取决于注射机的模板尺寸和拉杆间距。移动模板的行程和可调节的模具闭合高度则决定于塑件脱模时所需要的行程和模具厚度。因此确定合适的注射机后,模具的外形尺寸必须满足下列条件(见图1):
In the design of mold, the approved plastic parts and projection area, as well as the choice of a suitable injection machine is necessary. However, the size of the mold must meet the injection molding machine rated the relevant technical parameters, which is the mold can be installed on the injection machine in order to successfully release the important conditions. The maximum size of the injection molding machine on which the mold can be installed depends on the size of the injection molding machine and the spacing of the drawbars. The stroke of the moving template and the adjustable closing height of the mold depend on the stroke and die thickness required for the part to be removed. Therefore determine the appropriate injection machine, the mold dimensions must meet the following conditions (see Figure 1):