Device and method for exchanging a film roll in wrapping.

摘要

The invention concerns a device and a method for exchanging a film roll during wrapping in a wrapping machine, which is arranged to wind the wrapping film around the product to be packaged, which is either stationary or rotated around a horizontal axis. The wrapping machine includes a revolving wrapping crank (3), which carries a film distribution sledge (4) along with it, the film being wrapped from a film roll (5) fitted in said sledge to around the product to be packaged while the wrapping crank (3) revolves. In the film-roll exchange station, a cassette (9) or equivalent is provided for the film rolls (5,5 min ) to be exchanged, and a transfer sledge (37), which is arranged to remove an old film roll (5) or an empty fastening bushing (34) from the film distribution sledge (4) and to transfer a new film roll (5) from the cassette (9) as replacement. In connection with the exchange station, a film-end transfer member (39) is provided, which, when a new film roll (5) is being shifted into the film distribution sledge (4), is arranged to pass the end of the film in said film roll (5) over the tensioning rolls (23) provided in the film distribution sledge (4) to the film-end locking member (40) substantially close to the product to be packaged, and from there further onto the face of the product to be packaged.