device for nastriforme perforator material with means to vary the interdistanza lines of perforation

摘要

a group of perforator (1) for puncturing a material nastriforme (n), fed in a continuous way, includes a controlama sets (7).cooperating with a cylinder rotating drilling (3) together with a plurality of blades (5) mounted in the seats (21, 23) carried out on the outer surface of said cylinder hole punch (3).the cylinder has a plurality of drilling locations (21,23) assembly of the blades (5) in a greater number of blades mounted on the cylinder (3); these sites are arranged along the outer surface of the cylinder in such a way that the drillerassembly of a variable number of blades (fig. 1).