Process and apparatus for manufacturing tyres for vehicle wheels

An apparatus for manufacturing a tyre for vehicle wheels, the tyre comprising a belt structure arranged between a carcass structure and a tread band, wherein the belt structure comprises at least one zero-degree reinforcing structure, the apparatus comprising:

• (1) at least one forming support for building said zero-degree reinforcing structure by depositing at least one continuous elongated reinforcing element on a deposition surface arranged in a radially outer position with respect to said forming support;
• (2) at least one deposition member of the continuous elongated reinforcing element on said deposition surface, wherein said at least one deposition member comprises:
• at least one pressing roller movable between a rest position in which the pressing roller is in a moved-away position from the forming support and an operative position in which the pressing roller is in a moved-close position to the forming support;
• and
• at least one element adapted to exert a magnetic force arranged at said at least one pressing roller, wherein the at least one element adapted to exert a magnetic force is an element made from magnetic material and the magnetic material is defined by a coating of magnetic material applied to a radially outer surface of said at least one pressing roller;
• (3) a guide channel configured to guide the continuous elongated reinforcing element toward the at least one forming support and the continuous elongated reinforcing element is cantilevered out of the guide channel before being attracted to the at least one pressing roller through the at least one element and said guide channel and said at least one pressing roller are adjacent to each other;
• and
• (4) an arm configured for movement around a pivoting axis F between said rest position and said operative position and the arm comprises a plate connected to the at least one pressing roller at a rotation axis R and the plate is rotatably associated with at least one inlet roller at the pivoting axis F.