Molding manner null of sand mold and sand mold for casting

摘要

PURPOSE: To reduce defects due to the insufficient filling of the molten metal by suppressing the run-out form the joint of sand cores in a sand mold for casting consisting of a sand mold and a plurality of sand cores which are continuously arranged therein. ;CONSTITUTION: A plurality of cores (a core print part is indicated by the number 7) are continuously arranged in a main mold 1 symmetrically to the center line and a recessed part is provided at the part to be held by end parts 10 of the core print parts. A pressing claw 14 is inserted inside the recessed part, and a wedge is inserted to press the claw toward the respective end parts 10 from the inside of the recessed part in the horizontal direction, and the sand of the main mold 1 is pressed against the joint of the end parts of the sand cores. The main mold 1 is brought into close contact with the end part 10 of the core to block the joint of the cores, and the run-out from the end parts 10 can be suppressed.;COPYRIGHT: (C)1995,JPO