MULTISTAGE PRESS DEVICE AND METHOD FOR MANUFACTURING INTERMEDIATE MOLD INCLUDED THEREIN

摘要

Provided are a small multistage press device in which height is controlled and a method for manufacturing an intermediate mold included therein. The present invention is a manufacturing step (S1) for an intermediate mold (30) constituted of a single member and in which molding surfaces are formed on each of an upper surface and a lower surface. The manufacturing step (S1) comprises: a reinforcing step (S11) of reinforcing an evaporative pattern (40) which has the same shape as the intermediate mold (30) with a reinforcing member (50) that supports the portions of the evaporative pattern (40) on which surfaces corresponding to the two molding surfaces of the intermediate mold (30) are formed; a placement step (S12) in which the evaporative pattern (40) is placed within a casting frame (60) such that the surfaces corresponding to the two molding surfaces of the intermediate mold (30) are positioned along a perpendicular direction; a first sand filling step (S13) in which casting sand (70) is injected into the casting frame (60); a second sand filling step (S14) in which casting sand (70) is injected into the casting frame (60) after the casting frame (60) is reversed up-and-down and the reinforcing member (50) is removed from the evaporative pattern (40); and a pouring step (S15) in which the evaporative pattern (40) is replaced by a melt. A multistage press device (1) is provided with at least one intermediate mold (30).