Punched frame mold making device, Punched frame mold making method and sand receiving device

摘要

A flaskless mold making apparatus comprises: two pairs of upper and lower molding flasks 4, each pair consisting of an upper molding flask 2 and a lower molding flask 3; a flask turning mechanism 5 for turning the two pairs of upper and lower molding flasks to move the flasks into two stations consisting of a mold making station and a mold extraction station; a match plate 6; a pair of squeeze plates 7, 8; a sand tank 9; an extracting mechanism 15; and a hole forming mechanism 80 provided at a position in the mold extraction station and configured to form a hole or a plurality of holes in a mold in the upper molding flask out of the upper and lower molding flasks having been moved to the position.