Punch for punching a paper sheet comprises a drive shaft, an upper punching stamp, a lower punching stamp, a control plate, an insertion slot for a paper sheet to be punched and a limiting plate

摘要

Punch comprises a drive shaft (1), an upper punching stamp (2), a lower punching stamp (3), a control plate (4), an insertion slot (7) for a paper sheet to be punched and a limiting plate (8). The movement of the drive shaft can be transferred to the upper and lower punching stamps which each have a pin (211, 311) to be received in a groove of the control plate. The control plate has a bolt which interacts with a guiding groove of the limiting plate. The bolt of the control plate slides in the guiding groove of the limiting plate. Preferred Features: The groove of the control plate has a T-shape or a U-shape. The limiting plate has a stop.