Patent ID: 6431254
Filing Date: 2002-08-13
Classification: B22C,B22D

Abstract:
An apparatus for casting molded parts, comprising:a casting mold having a lower core, an upper core and pushing elements, which, in a first end position, are in contact so as to form a hollow space into which a liquid casting mass can be introduced during a casting process, with the upper core, which rests against the inside of the molded part, being displaceable in an insertion direction in order to remove the molded part comprising a hardened casting mass, the upper core having a jacket surface and a bore that extends at a predetermined angle with respect to the insertion direction; an actuating element displaceable in the insertion direction; a crossbeam having a guide groove which extends along a straight line; an undercut pushing element coupled to the actuating element, via the crossbeam and having a front end that is movable between first and second end positions, and a guide element that protrudes from the undercut pushing element and extends into the guide groove of the crossbeam; wherein the undercut pushing element has a planar surface segment, and the guide element has a T-shaped cross section and an underside that is screwed to the planar surface segment of the undercut pushing element; wherein due to a displacement of the actuating element, the undercut pushing element travels in the bore of the upper core with the front end of the undercut pushing element protruding laterally beyond the jacket surface of the upper core in the first end position during the casting process, and with the front end of the undercut pushing element assuming the second end position that is one of (a) flush with the jacket surface of the upper core and (b) disposed behind the jacket surface, when the upper core is removed from the casting mold.