| 摘要 |
A paper web treatment device is disclosed, which includes a nip forming roll pair. One of the rolls of the pair comprises a mantle portion rotatable on a central shaft portion. This roll is arranged to be moved in a radial direction for disengagement from the other roll. There are means for producing a mechanically guided rotary motion at both ends of the shaft portion simultaneously with the radial motion of the roll. The shaft portion is used as a rigid member mechanically interconnecting the rotary motions at both ends of the roll, thereby synchronizing the radial motions of both ends for obtaining exact parallel disengagement of the movable roll from the other roll. |
