| 摘要 |
PURPOSE:To obtain advantageously and conviniently different kinds of pattern treads based on the same mold through selection of respective connecting positions, by deciding the one or more connecting positions separated from each other and placed at intervals by running along the external circumference of a tire which is going to be manufactured. CONSTITUTION:As for a mold of the titled method, it is constituted with a set of cavity half parts U, L forming a molding cavity C within an inner cave through a connection at the surface S by making the central circumferential surface P of a normal tire into the parting surface S and a bead die annulus M and a bladder B conforming to the respective inner circumferences, and a deep hollow R for formation of a lug is notched on the inside F of the mold forming the bottom of a lateral groove. A projection of the inside F of the mold at a regular connecting position is shown by (a) and a similar one at a second connecting position to be placed at intervals by running along the external circumference of a tire, which is going to be manufactured, from the connecting position is shown by (b). With this construction, at the time of the connection at the parting surface of the one set of the molds without necessitating a newly-made mold, vulcanization molding to a different odd-shaped pattern can be performed easily between the parting surface and a basic shape through only selection of the more than one connecting positions isolating from each other. |
