| 摘要 |
PURPOSE: A method and an apparatus for manufacturing a three-dimensional molding using hydraulic pressure are provided to maximize productivity and merchantability by forming various cubic protrusions on the outer circumferential surface of the first molding promptly, simply and accurately without defects after molding first molding. CONSTITUTION: The apparatus is characterized in that a hydraulic mold(10) for forming a three-dimensional protrusion on the outer circumferential surface of first molding(1) formed through press comprises a plural sliding type split dies(3) transferred forward and backward on a plane centering around a molding part, and a liftable and lowerable cap die(4) for sealing an upper part of the split dies and supplying a certain hydraulic pressure to the split dies at the same time when the split dies are gathered to a central part as the liftable and lowerable cap die is being lifted and lowered vertically, wherein a three-dimensional depressed part(31) is formed on an inner surface of the split dies, and a hydraulic pressure supply hose(5) for supplying hydraulic pressure and a hydraulic pressure discharge hose(6) for discharging hydraulic pressure are mounted on the liftable and lowerable cap die. |
