Patent DE-102007054723-A1 (DE)
Title: Molded part useful as an injection mold of an injection casting machine, comprises a molded surface, which has a surface-cooled or surface-heated zone and an arrangement of channels arranged nearer to the zone behind the molded surface
Inventor: HERZOG FRANK
IPC: B22D17/22
Filed: 2007-11-14
Abstract: The molded part (1) useful as an injection mold of an injection casting machine, comprises a molded surface (4), which has a surface-cooled or surface-heated zone and an arrangement of channels arranged nearer to the zone behind the molded surface for guiding a cooling- or a heating medium. The zone of the molded surface is formed as a contoured beam insert (3) of the molded surface partially produced by a generative process at a non-even surface (7) of the molded part. The insert is permanently or removably placed at a molded body (2) of the molded part after its production. The molded part (1) useful as an injection mold of an injection casting machine, comprises a molded surface (4), which has a surface-cooled or surface-heated zone and an arrangement of channels arranged nearer to the zone behind the molded surface for guiding a cooling- or a heating medium. The zone of the molded surface is formed as a contoured beam insert (3) of the molded surface partially produced by a generative process at a non-even surface (7) of the molded part. The insert is permanently or removably placed at a molded body (2) of the molded part after its production. The insert is inserted in a recess, forms a surface section of the molded part with its upper side, is sealingly connected on edge-side with the molded body, is non-positively, positively or material-fittingly connected with the molded body or a recess of the molded body and is formed as a replaceable wear part. The insert is fastened at the molded body by a bayonet connection or locking connection, is formed to a retainer with counter-elements, which co-operate with engagement elements of the molded body, is formed as a hybrid component and has a substructure, a molded surface section generatively built to the insert and system of cooling channels or heating channels, which limit on end side at outlets of the cooling- or heating channel sections of the molded body. The engagement elements of the molded body are formed as movable and intermittently fixable elements. Connecting surfaces of the molded body and the insert self-centeringly work between the molded body and the insert. The insert has an open system of cooling- or heating channels on its rear side turned to the molded body in a final assembly state in an area-wise manner. The open system is formed in the form of grooves or recesses and is covered and closed by a contact surface of the molded body. The molded part is produced in a machining process or in a casting process and is an injection casting mold or an injection casting mold insert. The insert forms a section of a cooled insert of the injection-casting mold and is formed as bearing element. The insert serves as guiding member of a stored body and is made of a material of high heat conductivity. A heat-conducting connection is arranged between the molded body and the insert. The insert is made of hardened or hardenable steel and is provided with recesses for movably receiving ejection elements. The ejection element is built during the generative construction process of the insert. The insert has channel for area-wisely implementing the cooling medium and a further channel for area-wisely implementing the heating medium. The first channel of the cooling medium and the further channel of the heating medium are combined in a heat exchanger chamber.