Method of managing the feeding of an elongated element to a tyre building station

An unwinding device of an elongate element wound on a reel for building tyres, comprising:

• a first support for a first reel on which said elongate element is wound, said first support allowing rotation of said first reel about an axis of rotation thereof,
• a processing unit of said elongate element, said unit being arranged to continuously supply said elongate element to a building station of said tyre, said processing unit comprising:
• i) a plurality of rotating rollers over which said elongate element is led in exit of said first reel;
• ii) a locking mechanism of said elongate element arranged to lock a terminal end of said elongate element at the exit of said first reel;
• and
• iii) a temporary bunching system for said elongate element adapted to allow continuous supplying of said elongate element, while said terminal end is locked and is joined to a starting end of said elongate element wound on a second reel supported by a second support which allows rotation of said second reel about an axis of rotation thereof;
• wherein said first and second supports for said first and second reels are housed on a first and a second movable carriage, respectively, which can be individually associated with said processing unit and moved independently with respect thereto;
• wherein said first and second movable carriages can be associated with said processing unit at a seat defined on a fixed frame of said processing unit;
• and
• wherein said respective fastening elements are provided on said first and second movable carriages and said fixed frame for removably fixing said first and second movable carriages to said processing unit at said seat.