| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-step pressure molding method having a plurality of pressurizing timing, and capable of efficiently molding a product with a complicated shape while controlling each pressurizing timing in accordance with the product shape, and to provide a die device used for the method. SOLUTION: Compressive force in the direction of the arrow X applied by a punch 8 is the pressurizing force to the whole face of the upper part of material powder 6, on the other hand, the compressive force in the direction of the arrow Y applied by a punch 9 is the pressurizing force to the central part of the bottom face at the inside of a pressure molded body 15. Further, the compressive force in the direction of the arrow Y applied by the lower edge parts 5a of a die is the pressurizing force to the side wall parts of the pressure molded body 15 to be obtained. By controlling elastic force of a disk spring part 3, strength of a planar member 112 or the like, switching from the first pressurization of pressurizing the side wall parts into the second pressurization of pressurizing the bottom face can be started at desired timing. COPYRIGHT: (C)2008,JPO&INPIT
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