Rewinding machine for producing logs of wound web material and relative method

A rewinding machine to form logs of wound web material, comprising:

• a first winding roller;
• a second winding roller;
• a nip defined between said first winding roller and said second winding roller, through which web material is fed;
• a rolling surface, extending upstream of said nip in relation to a direction of feed of the web material and defining, with the first winding roller, a channel into which winding cores are fed, said channel having an inlet and an outlet;
• a feeder to feed said winding cores into said channel;
• a severing device to sever the web material upon termination of winding a log, wherein said severing device acts against a surface of the first winding roller to pinch the web material against said first winding roller, the severing device having a feed speed different from a peripheral speed of the first winding roller during contact with the web material;
• wherein said severing device is disposed to operate on the web material in a position upstream of the inlet of said channel, in relation to the direction of feed of the web material;
• said first winding roller having suction openings on a cylindrical surface thereof;
• between a position in which said severing device operates and the inlet of said channel a suction box is provided inside said first winding roller, an initial edge and a final edge of the web material produced by severing performed by the severing device being held via the suction openings on said first winding roller to transfer the initial edge to a new core being fed into said channel;
• and glue applicator for applying glue to the surface of the core along a line parallel to an axis of said core.