公开(公告)号：US4788023A

公开(公告)日：1988-11-29

申请号：US939253

申请日：1986-12-05

申请人： Eugen Buhler ,  Klaus Strobel ,  Karl Schwarzmeier

发明人： Eugen Buhler ,  Klaus Strobel ,  Karl Schwarzmeier

IPC分类号： B28B3/00 ,  B28B3/02 ,  B28B13/02 ,  B29C59/00

CPC分类号： B28B13/021 ,  B28B3/00 ,  B28B3/02

摘要： A process and apparatus for producing a dry-pressed molding from a particulate or granular molding material such as a ceramic molding composition in which the composition is initially drawn into a loading cavity by applying a vacuum thereto. The loading cavity is formed by a first mold half and a shooting head having a molding surface the shape of which determines the shape of a premolding which is formed upon entry of the composition into the loading cavity and sufficiently compressed to retain its shape after the shooting head has been removed to allow a second mold half to be positioned over the first mold half. The shape of the part of the premolding formed by the shooting head molding surface differs from that of the second mold half in such a way that, on final pressing, the compression starts in the areas of relatively greater thickness of the premolding before it starts in the areas of relatively smaller thickness so that the compression ratio is maintained approximately constant over the whole of the area of the molding.

摘要翻译： 一种用于从颗粒或颗粒模制材料（例如陶瓷模制组合物）生产干压模制品的方法和装置，其中组合物最初通过向其施加真空而被抽吸到装载腔中。 装载空腔由第一半模和具有成型表面的成型表面形成，成型表面的形状决定了在组合物进入装载腔中时形成的预制件的形状，并且在拍摄之后充分压缩以保持其形状 头部被移除以允许第二半模定位在第一半模上。 由拍摄头成型面形成的预成型部分的形状不同于第二半模的形状，使得在最终压制时，压缩开始于在其开始之前预成型件的较大厚度的区域 厚度相对较小的区域，使得压缩比在整个模制区域保持近似恒定。