| 摘要 |
A turning device comprises a turning bar (6) for diverting a material web, comprising a sleeve provided with holes, an inner chamber (13) supplied with compressed air, a closing body (03) and a frame which supports the turning bar (6) with the freedom to pivot about 90 DEG , whereby the closing body may be moved between two positions within the inner chamber in which the above seals off one group of holes (08). The turning bar (6) is not connected to the frame at one of the longitudinal edges thereof. A compressed air supply line (06, 29, 31, 32) runs at the other longitudinal edge thereof, through a joint connecting the turning bar to the frame. |
