Rewinding machine

摘要

A rewinding machine includes a drawing assembly (1), a winding assembly, a core-change assembly (5), and pneumatic elements for interrupting the continuity of the ply at the end of a winding cycle, and for starting a new winding cycle.

主权项

1. A rewinding machine comprising:
a drawing assembly for feeding a ply; a winding assembly for winding the ply fed by the drawing assembly around a core on which the ply is to be wound, comprising a primary roller and a secondary roller rotating in contact with the core on which the ply is being wound, and a channel for passage of the core delimited by a bottom chute and by a sector of the surface of the primary roller that, during winding, is in contact with the core; a core-change assembly for expelling from the machine through said chute a core at the end of a winding cycle and inserting a new core on which the ply is to be wound; a tearing device configured to interrupt the continuity of the ply at the end of a winding cycle; and a winder configured for winding a flap for drawing the ply onto the new core at start of a new winding cycle, wherein said tearing device is operative upstream of introduction of the new core into said channel and comprise a dispenser of pressurized air for sending a jet of pressurized air onto the ply.