Dry pressing method and equipment for ceramic part forming

Abstract

The invention discloses a dry pressing method and device for ceramic part forming, and relates to the field of ceramic dry pressing forming. The dry pressing equipment comprises a supporting base, anoscillating assembly, bottom supports, an upper mold, a lower mold, supporting legs, a demolding assembly and a pressurizing assembly; the supporting legs are installed at the four corners of the bottom side of the supporting base correspondingly, and the lower mold is installed on the top side of the supporting base; and the pressurizing assembly is installed on the supporting frame, the upper mold is installed at the bottom end of the pressurizing assembly, the bottom supports are arranged on the periphery of the lower mold, and the oscillating assembly is installed on the top sides of the bottom supports. In the filling process, material powder for manufacturing ceramic blanks is added into the lower mold, and during filling, a swing motor works to drive a swing rod to rotate, a fixed rod can be pushed and pressed, after the oscillating rod is separated from one end of the fixed rod, the oscillating rod vibrates and flatly spreads the powder in the lower mold under the stretching action of a reset spring and the knocking contact of a knocking rod and the lower mold, so that the compactness of the powder is improved, the uniform spreading of the powder can be guaranteed, and thepowder can be extruded more smoothly.

Description

technical field [0001] The invention relates to the field of ceramic dry-press forming, in particular to a dry-press method and equipment for forming ceramic parts. Background technique [0002] Dry pressing or compression molding, a molding method of metal powder and ceramic powder, is to fill the dry powder blank into the metal mold cavity and apply pressure to make it a dense body; [0003] In the process of dry pressing, the upper and lower molds are usually pressed against each other. During the dry pressing process, the internal gas is not easy to discharge, and it is easy to leave air pits on the surface of the billet, which will cause the billet to be scrapped. When adding powder, For direct feeding, the particle gap between powder materials is relatively large. After extrusion, the compactness is not good, resulting in unqualified products. It is easy to separate and break during demoulding, resulting in incomplete demoulding and affecting the pass rate of the prod...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dry pressing method and equipment for forming ceramic parts, which solves the problem that when adding materials, the particle gap between powder materials is large, and after extrusion, the compactness is not good, resulting in unqualified products. question

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