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

A method of controlling deposition of a continuous elongated element in building a tyre for vehicle wheels, includes: feeding an initial end of a continuous elongated element of elastomeric material through a slit bounded by a first roller and a second roller of a calender; retaining the continuous elongated element against a peripheral surface of the first roller; laying the initial end of the continuous elongated element against a deposition surface; rotating the calender around an oscillation axis that is substantially coincident with a contact generatrix between the first roller and the second roller; and dragging along the continuous elongated element together with the deposition surface.

主权项

1. An apparatus for building a tyre for vehicle wheels, comprising:
a forming drum capable of rotating about an axis thereof; an extruder; a calender mounted on a frame and comprising a first roller and a second roller disposed close to each other at radially peripheral portions thereof and defining a slit, wherein the frame is movable relative to a supporting base of the frame around an oscillation axis, wherein said oscillation axis is substantially coincident with a contact generatrix between the first roller and the second roller; and an actuating device acting on the frame for moving the calender around the oscillation axis between a first position, at which the first roller is spaced apart from the forming drum, and a second position, at which the first roller is disposed close to said forming drum.