| 摘要 |
<p>Along a building line (10), a green tyre (2) is built on a rigid toroidal support (11) having an outer surface (Ha) substantially conforming in shape to an inner surface (2a) of the green tyre (2). The green tyre (2) is then transferred to a bead moulding and prevulcanisation station (20) where each bead (6) of the tyre (2) is moulded by tightening it between a surface portion (23) of the toroidal support (11) and an annular clamping surface (22) carried by a removable tightening flange (27). The tightened beads (6) are prevulcanised through heat supply by means of electric resistors integrated into the tightening flanges (27). The tyre (2) with the prevulcanised and tightened beads (6) is transferred into a moulding cavity (44) having an inner wall of a shape substantially conforming to that of the outer surface (2b) of the moulded tyre, to carry out moulding of the tyre (2) and complete vulcanisation of same.</p> |
