BIPOSITIONAL PUNCHING DEVICE

摘要

The invention relates to a bipositional punching device used for punching holes in the paper sheets for filing. According to the invention, the punching device comprises a cutting plate (1) having the supports (3) rigidly fastened thereon by rivets (10), the punches (2) provided with springs (4) confined by washers (7) gliding through said supports, said punches (2) being driven by some cams ( 5 and 6) rigidly mounted on an axle (11) provided with the driving rosettes (9), said cams ( 5 and 6) being driven by a driving plate (14) attached to the cutting plate (1) by means of a hinge (13) and a support (12).