| 摘要 |
A process for assembling a tire, including producing a crown of said tire on a drum of variable diameter of a generally cylindrical form. The assembling process includes: positioning the drum at a first diameter D1; depositing a first crown belt ply N1 of reinforcement cables coated in a rubber mix forming a given angle alpha1 with a circumferential direction, by activating first and second holding devices to make an entire first crown belt ply N1 adhere to a surface of the drum; depositing a second crown belt ply N2 of reinforcement cables coated in a rubber mix forming a given angle alpha2 of an opposite sign to the angle alpha1 with the circumferential direction; making the second crown belt ply N2 adhere to the first crown belt ply N1; while keeping the first holding device in the preceding configuration, activating the second holding device so as to permit sliding of the first crown belt ply level with said second holding device; positioning the drum at a second diameter D2 greater than the first diameter D1; activating the second holding device so as to make the first and second crown belt plies adhere to the surface of the drum; depositing additional plies and profiled products to form the crown of the tire; and removing the crown from the drum.
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