Device for controlling the discharge of Logs outgoing from a rewinding machine, comprising a body (6) placed downstream of a surface (5) along which the logs (3) move in a output direction (F), wherein said body (6) rotates with a predetermined angular speed about an axis (a) parallel to the logs (3) and perpendicular to said output direction (F) followed by the Logs (3). The body (6) has at least one pocket (P) adapted to receive and temporarily housing a log (3) that enters in the same pocket (P) while moving along the said output direction (F). The body (6) rotates about said axis (a) in a direction (G) opposite to the output direction.

The roll tilter supports a palleted roll of sheet or thin plate material and re-positions the roll for mounting to an unrolling fixture. The roll tilter received the roll resting on a pallet in a vertical centerline position and rotates the palleted roll from the vertical position to a position with the roll centerline in a horizontal position to facilitate mounting the roll on an unrolling fixture.

The invention comprises a method and a device for changing removable carrier units (8a, 8b) with flat packaging material (10) wound on supply rolls (9), in particular, packaging film (11) within a packaging machine (3), which is equipped with devices for at least partially wrapping piece goods, containers, article groups, etc., with flat packaging material (10). With the method removable carrier units (8a, 8b) with new supply rolls (9) are fed in a series one after the other to a work area (AB) of a handling device (5), the work area (AB) of which extends into at least one position of the operating position of the removable carrier unit (8a, 8b) arranged in the packaging machine (3), which is equipped with a supply roll (9), so that it replaces removable carrier units (8a, 8b) located in the packaging machine (3) and used up supply rolls (9) with new removable carrier units (8a, 8b) with in each case a new supply roll (9). Here respective removable carrier units (8a, 8b) are inserted alternately in at least two different installation positions of the packaging machine (3) and its flat packaging material (10) is connected with the packaging material still located in the packaging machine (3).