Cutting module for web products and cutting device equipped with at least one such module

Cutting module for slitting web products, comprising:

• a circular knife element and a circular bedknife element, each presenting a specific radius and a periphery and being rotatively mounted on a frame in such a way that their respective axes are substantially parallel to one another, the distance between said axes being such that the respective periphery of the knife and bedknife cooperate with each other in order to slit a web passing between said elements;
• an eccentric ring having a cylindrical external surface presenting a first axis rotatable in a corresponding opening of the frame and an internal cylindrical surface having a first diameter and presenting a second axis distant from the first axis and parallel to said first axis;
• an intermediate member having an external cylindrical surface presenting said first diameter in order to cooperate with the internal surface of said eccentric ring and an internal cylindrical surface adapted to receive and immobilize roller bearings in order to permit rotation of one of said elements with respect to the frame;
• said intermediate member and said eccentric ring being provided with cooperating thread in order to be screwed one on the other and first blocking means having a first position wherein said eccentric ring and said intermediate member are immobilized with respect to each other;
• second blocking means for temporarily immobilizing said one circular element with respect to the intermediate member;
• and
• third blocking means having a first position wherein the eccentric ring is immobilized with respect to the frame and a second position wherein the eccentric ring could be rotated with respect to the frame in order to modify the distance between the axes of said circular knife and bedknife elements wherein the knife is mounted fixedly on a knife carrier rotatably mounted on said intermediate member.