Controller of injection molding machine

摘要

A crosshead position (Cf) for obtaining a set mold clamping force is obtained based on a mold touch position (Ct) obtained in mold clamping process in immediately preceding molding cycle, and a crosshead (20) is allowed to move to the position (Cf). During that time, it is determined whether a load (La) of a servomotor (18) for mold clamping operation which drives a toggle mechanism (1) exceeds a judgment load (Ls), and a crosshead position (Ca) when the load (La) exceeds the judgment load (Ls) is stored as a mold touch position. In the next molding cycle, a crosshead position (Cf) where the set mold clamping force is obtained is obtained based on this stored mold touch position.