Metal die device for casting

Abstract

A metal die device for casting of a simpler device structure by which a cast product having an undercut may directly be produced is disclosed. A casting (cavity) S is provided between a fixed die and a movable die as a movable core having an undercut forming projection is interposed between the fixed and movable dies. A swing member , caused to swing by a cylinder , is provided overlying the movable die . On the swing member , there is provided a cylinder for vertically sliding the core . In die opening, following casting, the core is vertically slid and subsequently caused to swing towards an upper outer side to release the core from the cast product. Degree of freedom in metal designing is achieved without excess restriction in the shape or position of the undercut.