| 摘要 |
PURPOSE:To obtain a molded part, which is favorable in yield and for the surface to be finished later and has few flash, by a method wherein an enclosed space surrounded by a first split mold, a second split mold and the inner peripheral surface of an outer tubular fitting is formed by elastically deforming the outer tubular fitting in such a manner that both the end surfaces of the outer tubular fitting are pressed by the first abutting surface of the first split mold and by the second abutting surface of the second split mold and, after that, raw material is poured in the enclosed space. CONSTITUTION:Firstly, an outer tubular fitting 5 is placed in the cavity of a molding tool 1 and, after that, the molding tool 1 is closed. At that time, one end surface 50 of the outer tubular fitting 5 is pressed by a first abutting surface 26 and, at the same time, the other end surface 51 of the outer tubular fitting 5 is pressed by a second abutting surface 34. As a result, the peripheral wall of the outer tubular fitting 5 is curved so as to position its central portion outwards in order to form an enclosed space 6 surrounded by a first split mold 2, a second split mold 3 and the inner peripheral suface of the outer tubular fitting 5. Secondly, un-vulcanized compounded rubber is poured through the inlet of the first split mold 2 into the enclosed space 6. The poured un-vulcanized compounded rubber is vulcanized and solidified by the heat transmitted from the molding tool 1 heated up to high temperature so as to from a rubber molded part 7 with the outer cylindrical fitting 5. |
