APPARATUS AND METHOD FOR MAKING CASTING MOLD

摘要

Disclosed are an apparatus and method for making a casting mold, such that air-on-oil driving is optimally brought into play, that air pressure and a pressure intensifying cylinder are used to increase air pressure, resulting in air pressure being converted into high oil pressure, and that thereby mold making processes are operated to simultaneously make an upper casting mold and a lower casting mold. The casting mold making apparatus is provided with a lower molding frame which is movably disposed; a matching plate which is installed on the lower molding frame and has patterns on both surfaces; a liftable lower filling frame which is capable of being connected to the lower end of the lower molding frame and has a casting mold sand introduction hole on a side wall surface; a lower squeezing board which is capable of forming a lower mold making cavity together with the lower molding frame, the matching plate, and the lower filling frame; an upper squeezing board which is fixed at a location above the matching plate in such a way as to face the same; an upper molding frame which is capable of forming an upper mold making cavity together with the match plate and the upper squeezing board; a frame setting squeezing cylinder which raises and lowers the lower squeezing cylinder, a drive mechanism which drives the frame setting squeezing cylinder by an air-on-oil method; and a controller which controls the drive mechanism. The controller performs control so as to drive the frame setting squeezing cylinder at pressure compatible with processes.