METHOD OF CONTROLLING DEPOSITION OF A CONTINUOUS ELONGATED ELEMENT IN BUILDING A TYRE FOR VEHICLE WHEELS, PROCESS AND APPARATUS FOR BUILDING A TYRE FOR VEHICLE WHEELS

摘要

The present invention relates to a method of controlling deposition of a continuous elongated element in building a tyre for vehicle wheels, which method comprises: feeding an initial end (19a) of a continuous elongated element (19) of elastomeric material through a slit (24) bounded by a first roller (22) and a second roller (23) of a calender (21); retaining the continuous elongated element (19) against a peripheral surface of the first roller (22); laying the initial end (19a) of the continuous elongated element (19) against a deposition surface (14a), rotating the calender (21) around an oscillation axis (X-X) that is substantially coincident with a contact generatrix between the first roller (229) and the second roller (23); dragging along the continuous elongated element (19) together with the deposition surface (14a).