Tool or tool insert for forming plastics components or use in the foundry industry

摘要

The tool or insert (1) is cut away on the rear side to produce a negative cavity parallel to and corresponding to the molding cavity. Uniform wall thickness between the two cavities gives uniform cooling. Tool elements, e.g. ribs (2) are integrated in the negative cavity and are connected to an outer wall to act both as reinforcement and/or cooling control members or cooling aids. An Independent claim is made for a method for tool manufacture in which the original model of the tool or tool insert (1) is produced by rapid protoptyping in which a wax model is produced, enclosed in ceramic shell and the ceramic is sintered. A cast mold is then prepared from the ceramic shell.