Apparatus for extruding ceramic molding
AssigneeDenso Corporation
InventorsSatoru Yamaguchi, Yasunao Miura
Life of this patent
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Abstract
The extruding apparatus has the molding die to form the ceramic molding, the screw extruder containing the extrusion screw to knead and guide the ceramic material toward the molding die. The extrusion screw is comprised of the pressure screw part and the diffusion screw part. The diffusion screw part provided at the front end of the extrusion screw has a diameter greater than the screw diameter of the pressure screw part.
Claims16
An apparatus for extruding a ceramic molding, comprising a molding die, to form a ceramic molding, and a screw extruder containing an extrusion screw to knead and guide a ceramic material toward the molding die, wherein
- said extrusion screw has a pressure screw part provided with a first lead of a single thread or more than one thread in the form of a spiral ridge, on an outer peripheral surface of a first shaft body and, on its front end, a diffusion screw part coaxial to the first shaft body and provided with a second lead of a single thread or more than one thread in the form of a spiral ridge on an outer peripheral surface of a second shaft body which rotates integrally with the first shaft body,
- said diffusion screw part having a screw diameter larger than that of the pressure screw part.
Dependencies are inferred from the claim text.