| 摘要 |
The invention relates to molding of a roller in which a roller main body is provided integrally on the outer periphery of an axial core member (310), and the objective of the invention is to prevent the generation of a thin burr, and damage to the die, for example. In order to achieve this objective, a die is provided with a first split die (1) and a second split die (2) which can butt against one another or separate from one another at mutually-opposing parting surfaces (1a and 2a). In the first split die (1) and the second split die (2) are formed: supporting portions (11 and 21) which are capable of supporting the axial core member (310) of the roller, and which can be brought into intimate contact with the outer peripheral surface of the axial core member (310), with a moderate surface pressure, when the mold is clamped; a roller main body molding surface (12), a cavity (A) being defined between the axial core member (310) and the roller main body molding surface (12) when the mold is clamped; and recessed portions (14 and 24) which are located at both end portions of the supporting portions (11 and 21) and extend along the parting surfaces (1a and 2a), and which are not in contact with the outer peripheral surface of the axial core member (310) when the mold is clamped, and which penetrate through the supporting portions (11 and 21). |
