TYRE BUILDING METHOD COMPRISING WINDING AN ELASTOMER STRIP AROUND A BUILDING DRUM

摘要

A tyre building method comprising: feeding an elastomer strip in a feed direction towards a building drum by means of a first and a second feed conveyor arranged in succession; cyclically determining the transverse position of both sides of the elastomer strip in a centring direction perpendicular to the feed direction; calculating an average head out of centre on a head portion of the elastomer strip; and moving the second feed conveyor transversely in the centring direction by an amount equal to the average head out of centre, before winding the elastomer strip around the building drum.

主权项

1. A tyre building method; the building method comprising:
feeding an elastomer strip (S) in a feed direction (D1) towards a building drum (3) having a centreline (10), by means of a first and a second feed conveyor (1, 2) arranged in succession; cyclically determining, by means of an optical measuring device (4), the transverse position of both sides (5, 6) of the elastomer strip (S) in a centring direction (D2) perpendicular to the feed direction (D1); moving the second feed conveyor (2) transversely in the centring direction (D2) on the basis of the measurements of the optical measuring device (4), to centre the elastomer strip (S) with respect to the building drum (3); and winding the elastomer strip (S) around the building drum (3); the building method being characterized by comprising: calculating an average head out of centre (AHOC) on a head portion (Δ2) of the elastomer strip (S); and moving the second feed conveyor (2) transversely in the centring direction (D2) by an amount equal to the average head out of centre (AHOC), before winding the elastomer strip (S) around the building drum (3).