Abstract: A device for gluing the tail edge of sticks or logs (10) of sheet material, such as paper or the like, comprising a positioning assembly (2) and a gluing assembly (3). The positioning assembly (2) comprises two rollers (4, 5) with a fixed center distance, that can be operated in synchronism to position the log (10) correctly before its transfer to the gluing assembly (3), also comprising a pair of rollers (11, 12) with a fixed center distance that can be rotated in synchronism. The roller (11) is a suction roller, which holds the edge (29) of the log, while the roller (12) can be moved vertically to tip the log (10) onto a glue distributing nozzle (19), which applies a layer of adhesive to the log itself, before it is discharged by rolling between a plane (20) and a belt (22) opposite, which presses on the log (10) causing the tall edge (29) to adhere to the glue-coated section of the log.

Abstract: The object of the invention is a re-reeling machine comprising a conveyor roller (11), suitable for being partially wound with a sheet material (40), a movable winding roller (13), able to be positioned by means of the rotation of a control cam (18), suitable for supporting the reel (30' and 30" respectively) in the winding and discharge phase, and a transfer roller (23), exerting elastic pressure on the reel, suitable for bringing the reel into contact with the winding roller (13), in which re-reeling machine the replacement core (30) encounters the sheet material before reaching the axis of conjunction between the transfer roller (23) and the conveyor roller (11), and the rollers always rotate at constant speed, the conveyor roller (11) and the winding roller (13) rotating at the same peripheral speed, while the transfer roller (23) rotates at a slightly lower peripheral speed.