Patent ID: 6053387
Filing Date: 2000-04-25
Classification: B65B

Abstract:
A strap driving device for looping machines, comprisinga strap guiding channel (8) for a looping strap (14), andtwo pairs of drive rollers (10, 21; 11, 22), engaging in the strap guiding channel (8) and each pair of rollers having a driving roller (10, 11) driven in rotation and a pressing roller (21, 22) to be set to the latter for free running, each driving roller (10, 11) being stationary and each pressing roller (21, 22) being mounted on a rocker (23) for the purpose of being set to the associated driving roller (10, 11) and the driving rollers (10, 11) being disposed successively on the strap guiding channel (8), and the pressing rollers (21, 22) being disposed on a joint rocker (23) for alternate setting, wherein the rocker (23) comprises a combined restoring and strap braking means (31), which lifts the looping strap (4) off the respective driving roller (10, 11) and simultaneously moves the rocker (23) into a neutral position in which, while the looping strap (4) is braked, none of the pressing rollers (21, 22) acts upon the looping strap (4).