ROTARY CUTTER FOR CUTTING A CONTINUOUS CORRUGATED STRIP

摘要

A high speed rotary cutter (30) includes a toothed counterwheel (72) which has a plurality of radial slots (721) extending across the wheel. First cutting blades (88) are slidably received in the radial slots each of which has a first cutting edge (68) on its outer end. The first cutting edge (68) is inclined to the line which is perpendicular to the advancing direction of a continuous corrgated strip (90). The movement of the first cutting blade between protruding and a retracted positions is controlled by a fixed cam (78) which is located inside the toothed counterwheel. The rotary cutter also includes a second cutting blade (42) which has a second cutting edge (422) and is aligned relative to the first cutting blade (88) so that the continuous corrugated strip is sheared gradually across its width. The first and the second cutting blades (88,42) are biased to engage each other to cut the corrugated strip.