| 摘要 |
The invention relates to a method and an apparatus for cutting a core to a predetermined length. With prior-art technology, sufficient accuracy can not be achieved. At the winder this often leads to a situation where the rolls are not separated from each other. According to the invention, the core is first moved in the direction of the longitudinal axis through a distance corresponding to the required cutting length, a rotating saw blade is driven through the outer surface of the core but not through the inner surface, the core is rotated through a first revolution, whereupon the direction of rotation of the sleeve is set to be the same as the direction of rotation of the blade, the blade is driven through the inner surface of the sleeve and the sleeve is rotated until the cut extends around the core. |
