Abstract: Equipment for cutting sheet material includes a plurality of pairs of blade units and counter-blade units slidable and fixable on respective support members, elongate in a direction perpendicular to that of the flow of the material being cut. The support members are common to a plurality of blade units or counter-blade units. The equipment further includes a unit for selectively engaging the blade and counterblade units with respective first and second carriages. The selective engagement units include a support structure on which is mounted a respective actuator including a piston, the distal end of which is shaped so as, in its extended position, to be able to engage a pin which projects from each blade unit and counter-blade unit respectively.

Abstract: The shaft for supporting cut roll portions in a cutting-reeling machine includes a cylindrical body, the outer surface of which has at least one recess for housing a resilient envelope which can be connected to a source of fluid under pressure by ducts in the cylindrical body. The shaft includes a plurality of rings open along respective generatrices, disposed side by side around the outer surface of the body and coaxial with the axis of the shaft. The rings have radial edges for engagement with grooves in the body of the shaft which allow them to expand circumferentially as a result of the inflation of the resilient envelope.