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1. 发明专利

JPH0239903A POWDER MOLDING MACHINE 失效
公开(公告)号：JPH0239903A
公开(公告)日：1990-02-08
申请号：JP19190288
申请日：1988-07-29
申请人： KURIMOTO LTD
发明人： SHIGEMATSU KAZUICHI
IPC分类号： B28B3/16 , B22F3/18
摘要： PURPOSE:To prevent compressed powder from accumulating and fixing on a tooth face, remove the same easily always to be received on a new tooth surface, receive good bitings and releasings and also prevent the power from heating variation end energy loss by specifying unsymmetrical surface constitution of a saw type molding tooth of a roll. CONSTITUTION:A forced feeding surface 4 cut from a surface into the inner section by an angle alpha forming 5-35 deg. from a line C connecting the centers of both molding rolls up to the turning direction is formed, and a compressive molding surface 5 cut from both ends of said forced feeding surface cut to the surface by an angle beta forming 55-85 deg. similarly to the turning direction is formed. A number of saw type forming teeth 6 of inequililateral triangle shape uniformly dividing an outer peripheral surface 7 of the roll are formed by both of said surfaces. As most of the maximum compressive force generated in the center line C direction is applied to the formed surface while only a little compressive force is applied to the forced feeding surface 4, the raw material powder is not retained in the compressive forming section to a molded material S easily. The molding teeth, therefore, are not buried at all to keep always sharp biting.

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