Automatic reel unwinding apparatus in a machine for packaging products

摘要

An automatic reel unwinding apparatus in a machine for packaging products comprising a bearer structure (14, 15) carrying a pair of rotating arms (16), centrally hinged to the bearer structure (15) through a rotation shaft (17) and carrying at their ends, on two shafts (18, 18′) able to be freely withdrawn from the arms (16), at least a pair of reels (12, 12′), the rotation shaft (17) being commanded through a motor reducer (20) and each of the two shafts (18, 18′) being commanded by a motor reducer (21) through a respective transmission (22) able to be selectively engaged with the motor reducer, foreseeing storage means (24, 25, 26) of a film (13) unwinding from an almost spent first reel (12) and fastening and cutting means (27) between an end portion (28) of film of an almost spent first reel (12) and an initial portion (29) of film of a second new reel (12′), the withdrawable shafts (18, 18′) being fixed to at least one openable support (19, 19′) arranged at an end of the arms (16).