| 摘要 |
PROBLEM TO BE SOLVED: To obtain a molding method obtaining the same effect as conventional fusion cut molding by altering a fusion cut mold to a material high in heat capacity without altering the constitution of machinery and adding constitution passing cooling water thereto. SOLUTION: The outer peripheral surface of the blade-shaped mold 2 among both molds 3 of a pressing mold 1 having a double structure molded into a shape to be welded and the blade-shaped mold 2 and the inner peripheral surface of the pressing mold 1 are surrounded by electric wires 4 so as to be constituted to generate heat by high frequency and a cooling water passing pipe 5 is provided to the outer periphery of the blade-shaped mold 2 and a placing mold 7 having the shape corresponding to that of the mold 3 is arranged on a lower surface plate corresponding to these molds 3 and, at first, a synthetic resin sheet having an overlap part to be welded is placed on the placing mold 7 and the upper blade-shaped mold 2 heated by high frequency and the pressing mold 1 are allowed to fall and the overlap part of a synthetic resin sheet is welded and cut into a desired shape at the same time and, next, cooling water is passed to cool a welded part. |
