A method and an apparatus for automatic change of the reel of extensible film in wrapping machines for the packaging of palletized loads

摘要

An apparatus and a method for automatic change of the reel of extensible film in wrapping machines for the packaging of palletized loads consist in:expelling the reel (5) that has run out from the spindle (9);positioning a service carriage (A) for carrying a new reel (1), said carriage being provided with means (3) for temporary support of the free end of the film of the new reel (1);lowering the fixed or rotating supporting structure (C) on the carriage (A) until it causes the spindle (9) of the reel that has run out to engage with the new reel (1) and the retention means (2) to engage with the means for temporary support (3);transferring the new reel (1) onto the spindle (9);transferring the free end of the film of the new reel from said means for temporary support (3) to said retention means (2);raising the supporting structure (C) into the wrapping position; andmoving the carriage (A) carrying the new reel away from the position of reel change to a position of parking.