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热固性塑料的压制成形工艺,具有其本身所固有的特点,在当前多品种少批量的生产条件下,只要正确地使用成形设备,合适地选择成形材料,合理地设计压制模具,压制成形工艺仍能以其独特的成形方式继续保持其生命力。一、一模多腔的压制模具对于形状不太复杂的制件来说,设计一模多腔的模具并不困难,而且成形操作简单,模具价格也不高(图1),但是,还必顺根据成形设备的能力、制件形状的大小、制件所要求的尺寸精度、成形料的流动特性来确定模具的型腔数目。然而,在加工多型腔模的每个型腔时,同一部位的尺寸精度相互之间难以保证一致,制件尺寸精度因而也会发生波动。所以在
Thermosetting plastic forming process, with its own inherent characteristics, in the current multi-species production of small quantities under the conditions, as long as the proper use of forming equipment, the appropriate choice of molding material, the rational design of the pressing mold, the press forming process can still Its unique form of shaping continue to maintain its vitality. First, a multi-cavity mold for the suppression of the shape is not too complicated parts, the design of multi-cavity mold is not difficult to mold, and the forming operation is simple, the mold is not high prices (Figure 1), but also Shun according to the ability of forming equipment, the size of the workpiece shape, the workpiece dimensional accuracy required, the molding material flow characteristics to determine the number of mold cavity. However, when machining each cavity of a multi-cavity mold, it is difficult to ensure dimensional accuracy of the same portion with each other, and dimensional accuracy of the part fluctuates. So in