PRECISION FORMING MOLD

摘要

PURPOSE:To obtain the structure of a mold capable of inhibiting lowering of parallelism based on deformation of the mold at a time of injection molding. CONSTITUTION:A pressure cylinder 5 actuated by the filling pressure of resin is provided to the outside of a cavity 3 and deformation amount of the outer circumferential part of a movable mold 8 is enlarged. Thereby the difference of deformation amount of both the outer circumferential part and the central part of a mold is lowered. Inhibition of lowering in parallelism of the mold is achieved.