MOLD APPARATUS FOR MOLDING SHUTTER OF RECORDING DISK

摘要

PROBLEM TO BE SOLVED: To prevent the inclination of a center core by resin pressure by accurately prescribing the position of the center core forming the inner surface of a shutter at the time of the molding of the shutter of MFD. SOLUTION: The window forming cores 32 forming the opening window of a shutter provided to a slide core 19 are allowed to impinge against a center core 17 to prescribe the position of the center core 17. The window forming cores 32 are made detachable with respect to the slide core 19 to be made adjustable in the protruding quantities (d) thereof. A gap is generated between the mutually opposed surfaces 22, 23 of the slide core 19 and a core holder 16 at the time of mold clamping so as not to interfere with the prescription of the position of the center core 17 by the window forming cores 32.