| 摘要 |
A holding and supporting group of a winding spindle in a machine for winding plastic film onto spools, said machine comprising a winding reel positioned between two uprights (12, 13), wherein a first upright (12) carries a rotating plate (14) which cantilever-supports three spindles (16, 17, 18) and a central shaft (15) which complete the winding reel, wherein the central shaft (15) is supported at the other end at the second upright (13), wherein, in correspondence with a free end of the central shaft (15), there is a star-shaped plate (19) with three supporting arms of each free end of the three spindles (16, 17, 18) through a respective toggle lever mechanism (21, 22, 25) driven by an actuator (30) carried on a lever (20) articulated with respect to the star-shaped plate (19), and in turn caused to oscillate between an operative blocking position of the respective spindle (16, 17 or 18) and a rest position for releasing the respective spindle (16, 17, 18) by means of a further actuator (32). |
