Web expanding device

Abstract

A web expanding device for or in a web-processing machine, especially a web-fed rotary printing press includes a frame and a cutting device (4) for longitudinally cutting a web (B) into a left-hand web strand (Bl) and a right-hand web strand (Br). A first deflecting device (5l) for the left-hand web strand (Bl) is provided along with a second left-hand deflecting device (6l) for the left-hand web strand (Bl), which is arranged after the first left-hand deflecting device (5l) in the direction of web delivery (F). A first right-hand deflecting device (5r) for the right-hand web strand (Br), which points toward the first left-hand deflecting device (5l) is provided along with a second right-hand deflecting device (6r) for the right-hand web strand (Br), which is arranged after the first right-hand deflecting device (5r) in the direction of web delivery (F) and points toward the second left-hand deflecting device (6l). The web strands (Bl, Br) can be expanded in parallel in relation to one another by an amount of expansion (X) by wrapping around the deflecting device (5l, 6l, 5r, 6r). At least one of the left-hand deflecting device (5l, 6l) and at least one of the right-hand deflecting device (5r, 6r) are mounted in the frame (2) adjustably by a path of adjustment each in order to adjust the amount of expansion (X). One of the second deflecting devices (6l, 6r) is movable in relation to the other of the second deflecting device (6l, 6r) and/or one of the first deflecting device is movable in relation to the other of the first deflecting device by a path of adjustment, so that the length of the path of the strand between the left-hand deflecting device (5l, 6l) differs from the length of the path of the strand between the right-hand deflecting device (5r, 6r).

Dependencies are inferred from the claim text.