Patent ID: 9701082
Date: 2017-07-11
CPC Classifications: B29D

Claim:
1. A process for building tyres for vehicle wheels, comprising: making carcass structures; making crown structures; and associating each carcass structure with each crown structure, wherein making said crown structures comprises: providing at least one first forming drum having a deposition surface and comprising sectors radially movable relative to a geometric rotation axis and circumferentially distributed one after the other; setting the deposition surface to a first deposition configuration; and depositing strip-like elements in circumferential side by side relationship on the deposition surface set in the first deposition configuration, so as to form at least one component of at least one first crown structure, wherein setting said deposition surface to a first deposition configuration, comprises: radially moving said sectors to give the deposition surface a predetermined diameter; and carrying out a relative movement between a central portion and axially external end portions of each sector to shape the deposition surface into a predetermined convex outline; wherein carrying out of said relative movement comprises: wherein radially moving said sectors is also performed through the sliders with the central portion of each sector unlocked relative to the geometric rotation axis by the first locking device and with the end portions of each sector locked relative to the respective central portions of each sector using a second locking device.