POWDER MOLDING DIE AND METHOD FOR REMOVING LEAKED POWDER IN THE POWDER MOLDING DIE

摘要

PROBLEM TO BE SOLVED: To provide a powder molding die where raw material powder leaked from a cavity part and deposited on a pressure receiving face which is made into a cause for exerting influence on the dimensions of a molding without being accompanied by deterioration in the working environment and adverse influence on equipment, and the dimensional accuracy of a molding can be maintained.;SOLUTION: The powder molding die is equipped with a punch holder 31 (a supporting member) forming a pressure receiving face 30 with which a state where at least any one selected from a plurality of die elements (a lower inner punch 11, a lower middle punch 12, a lower outer punch 13) in a lower punch 2 is pressure-welded is made. The circumference of the punch holder 31 is provided with: space forming members (a holder 41, a cover body 42) forming a prescribed closed space (a powder removal space 40) together with the lower punch 2; and air introduction means (an air introduction port 51, an air introduction passage 52) introducing air so as to be sprayed on the pressure receiving face 30 via hole parts (an inner die rod hole 34, a middle die rod hole 35) formed at the punch holder 31 and opening to the pressure receiving face 30.;COPYRIGHT: (C)2009,JPO&INPIT