Arrangement for cutting paper board sheets, and machine comprising said arrangement

Arrangement for cutting paper board sheets fed through the arrangement along a direction L, said arrangement comprising:

• a first wheel arranged to rotate around a first axis extending substantially transverse to the direction L, said first wheel comprises at least one knife having a knife edge extending parallel to the first axis for cutting the paper board sheets and extending from a peripheral surface of the wheel, and said knife separating portions of a respective sheet of the paper board sheets by the cutting;
• a second wheel arranged to rotate around a second axis extending substantially transverse to the direction L parallel to the first axis, said second wheel is arranged in the same plane as the first wheel and comprising a peripheral surface arranged adjacent the knife such that the paper board sheets are cut between the first and the second wheel;
• wherein the first wheel comprises a respective element, located within a recess formed in a peripheral surface of the first wheel, for each respective knife with only a single knife being mounted upon each respective element, said element is formed as a circular arc with substantially the same radius as the peripheral surface of the first wheel and a corresponding recess formed in the first wheel peripheral surface, said element is pivotally arranged around an axis A substantially parallel to the first axis in said recess and said respective knife extending from the element such that the position of said respective knife in relation to the first wheel is adjusted by pivoting the element by adjustment means arranged to secure the element in the desired position, and said adjustment means comprising a screw extending, inwards in a radial direction with reference to the first axis of the first wheel, through the element and from the element to the first wheel at the recess, wherein the position of the element around axis A and the position of the knife in relation to the centre of the first wheel is adjusted by arranging the screw in the intended position via turning the screw relative to the element.