MACCHINA PERFORATRICE E RILEGATRI CE PARTICOLARMENTE PER FOGLI DA RIUNIRE CON UN DORSO DI PLASTICA

摘要

A machine for perforating sheets and for enabling binding of the perforated sheets into a folder having a plastic binding ring is structured with a perforation mechanism including a plurality of punch elements which are raised and lowered for perforating the sheets and a flexing assembly including a plurality of displaceable arm members adapted to engage the plastic ring to enable flexing thereof to a position where the perforated sheets may be placed in binding engagement therewith. The invention particularly relates to the combination of an eccentric cam adapted to engage the perforating mechanism to effect actuation of the punch elements and a helical cam which engages the flexing assembly to effect actuation of the arms whereby the ring may be flexed to a position enabling insertion of the sheets in binding engagement therewith.