PRODUCTION OF SHAPED PERFORATED PARTS

摘要

The invention relates to a casting mold especially for injection molding of plastic parts. Said mold consists of a first (1) and a second (2) tool which can be moved towards one another to a distance corresponding to that of the wall thickness of the work piece. Together, these tools form the negative mold of the work piece (3). According to the invention, pins (5) are inserted in at least one tool (1) in blind holes (4). Said pins protrude from the surface of the tool surface (6) and said protrusion has a conical shape. Said cones are provided with flattened sections (8) which closely contact the inner surface of the opposite tool (2) when the tools (1, 2) are closed. At one of the generating lines (10, 11) the cone (7, 7') is substantially in parallel to the direction of movement of the tools (1, 2).