| 摘要 |
<p>A rewinder (10) for winding paper (11') around a core (11) for making a log (11") comprising, in an upstream position, means for transporting and introducing the core (11) into a channel (12) defined at the top by an upper winding roller (14), supplied from above with the paper (11') directed towards the channel (12), and at the bottom by a cradle member (13) associated downstream with a lower winding roller (15), the rewinder (10) comprising a third oscillating roller (16) arranged above the lower winding roller (15), the three rollers (14, 15, 16) having respective axes parallel to each other and perpendicular to the forward movement of the paper (11') and cooperating downstream of the channel (12) to wind the paper (11') around the core (11) to make the log (11"), further being provided cyclic means for tearing the paper (11') moving forward on the upper winding roller (14) to identify a final edge (50) and an initial edge (60) as well as means to cause said initial edge (60) to wind on the core (11) introduced into the channel (12), wherein the tearing means comprise at least one tearing head (102) cyclically mobile alternating between a first inoperative position and a second operative position in contact with the paper (11') moving forward on the upper winding roller (14), the second operative position being substantially instantaneous without sliding along the upper roller (14).</p> |
