Nipping roller gap adjusting device

摘要

In order to accurately perform the gap adjustment of nipping rollers; one roller rotatably provided at a prescribed position and the other movable roller; the nipping rollers being adapted so that the other roller is capable of forcing a paper web passing between the two rollers onto the one roller, there is provided a nipping-roller gap adjusting device comprising: a pair of supporting arms, one end of each of the supporting arms being swingably supported and the other end thereof rotatably supporting the other roller; a pressing force imparting means which gives to the support arms a force working in such a direction that causes the other roller to approach the one roller and which, at the same time, can adjust the magnitude of the force; a minimum gap setting means which can set a minimum gap between the one roller and the other roller; a gap adjusting means which adjusts the size of a gap between the one roller and the other roller; and a fixed frame member which rotatably supports the one roller and on which the gap adjusting means is mounted.