IMPACT EXTRUSION FORMING DEVICE FOR BOTTOMED CONTAINER AND IMPACT EXTRUSION FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an impact extrusion forming device capable of preventing a deformation of a bottomed container at the time of being released from a die. SOLUTION: In an impact extrusion forming device for a bottomed container M which deforms a material (m) to be formed within a cavity 4 into the inverse direction of the pressurizing direction by pressurizing on impact the material with a punch 2 which is arranged so as to relatively move in the axial direction of a receiving die 1 having the cavity 4, a first intake part 5 which takes air into a space S1 between a bottom wall Ma of the bottomed container M and the cavity 4 when the bottomed container M is formed in the receiving die 1 and released from the receiving die 1 after forming by pressurizing and a second intake part 8 which takes air into a space (S2) between the pressurizing surface 2a of the punch and the bottomed container M when the bottomed container M is formed in the punch 2 and released from the punch 2 are provided. Thus, the spaces S1, (S2) are restrained to be decompressed and whereby the bottomed container M is prevented from being deformed.