METHOD AND EQUIPMENT FOR INJECTION MOLDING

摘要

PROBLEM TO BE SOLVED: To provide a method for injection molding which enables prevention of deformation or breakdown of a molding tool and attainment of an excellent molded article on the occasion when the tool is manufactured by an optical molding technique and the injection molding is conducted by using the tool. SOLUTION: The pressure of resin filled in a molding tool or a pressure loaded on the molding tool is detected by a pressure detecting means 13. A prescribed pressure enabling prevention of deformation or breakdown is inputted beforehand to a pressure computing device 14, the pressure of the filled resin is compared with the inputted prescribed pressure and injection is controlled so that the resin pressure may not exceed a prescribed value.