MOLD, METHOD OF MANUFACTURING THE SAME, INJECTION MOLDING DEVICE, AND INJECTION MOLDING METHOD

摘要

A mold, a method of manufacturing the mold, an injection molding device, and an injection molding method. The mold comprises a fixed side mold (31) and a movable side mold (32). An annular groove (33) surrounding a cavity (30a) formed by the fixed side mold (31) and the movable side mold (32) is formed in one of the fixed side mold (31) and the movable side mold (32), and a mold seal member (36) formed of a silicon rubber is disposed in the annular groove (33). A mold seal groove (37) opposed to the mold seal member (36) is formed in the other of the fixed side mold (31) and the movable side mold (32). The mold seal member (36) is projected from the contact surface of the fixed side mold (31) or the movable side mold (32) and comprises a fitting part (36a) fittedly installable in the mold seal groove (37). The cross sections of the fitting part (36a) and the mold seal groove (37) are formed in an approximately same shape.