Plant for building green tyres for vehicle wheels

A plant for building different models of green tyres for vehicle wheels by using elementary semi-finished products, comprising:

• at least one first workstation for building a first carcass structure on a first forming support, said at least one first workstation comprising:
• a first assembly apparatus configured for assembling said first carcass structure, wherein said first assembly apparatus comprises a first feeding unit configured for feeding a first elementary semi-finished product onto said first forming support,
• a first application unit configured for applying annular reinforcing inserts on said first forming support, and
• a first filling insert application device configured for applying at least one first filling insert on said first forming support;
• two inner waiting units positioned inside said at least one first workstation and configured for temporarily storing said first forming support;
• said at least one first workstation further comprising a first transportation device configured for transporting said first forming support from one of the two inner waiting units to said first filling insert application device and for transporting said first forming support from said first filling insert application device back to said one of the two said inner waiting units, and for transporting said first forming support from said first assembly apparatus to the first filling insert application device and for transporting said first forming support back to said first assembly apparatus from the first filling insert application device,
• at least one second workstation arranged in a production path downstream of said at least one first workstation for building at least one second carcass structure on at least one second forming support, said at least one second workstation comprising:
• at least one second assembly apparatus configured for assembling said at least one second carcass structure,
• wherein said at least one second assembly apparatus comprises at least one second feeding unit configured for feeding a second elementary semi-finished product,
• wherein the second elementary semi-finished product is different from said first elementary semi-finished product including different elastomeric material used to make the first elementary semi-finished product and/or a different type of reinforcing elements inside the elastomeric material, onto said at least one second forming support;
• and
• at least one bypass device for transporting said first forming support from said at least one first workstation to a third workstation arranged in the production path downstream said at least one second workstation for building at least one further structural component, without transiting through said at least one second workstation,
• wherein said at least one first workstation and said at least one second workstation are synchronised with each other so that said first carcass structure and said at least one second carcass structure are built at least in part simultaneously.