| 摘要 |
Provided is a simultaneous molding method wherein the bottom surface of a mold is ensured to be horizontal and is reliably ejected, the structure is simple, and flaskless top and bottom molds are molded simultaneously. Said method involves a step for defining a bottom molding space by means of: a bottom frame disposed, in a manner so as to be able to be transported in and out, on a molding position in which a mold is molded; a match-plate which is mounted onto the upper surface of the bottom frame, and has a pattern on both surfaces; an ascending/descending bottom filling frame which can be connected to the bottom edge of the bottom frame, and has a molding sand introducing hole on the side wall surface; and an ascending/descending bottom squeeze board. Said step also defines a top molding space by means of: an ascending/descending top frame which can be placed on the match-plate, and has a molding sand introducing hole on the side wall surface; and a top squeeze board which is installed on the upper side opposite from the match-plate. The method also involves: a step for simultaneously introducing molding sand into the bottom molding space and the top molding space; a step for simultaneously forming a top mold and a bottom mold by compressing the molding sand by raising the bottom squeeze board; a step for removing the top mold from the pattern on the upper side of the match-plate, and for removing the bottom mold from the pattern on the lower side of the match-plate; and a step for ejecting the top mold from the top frame, and for ejecting the bottom mold from the bottom filling frame. |
