A punching device for tubular segment-like preferred sheet-like

摘要

The apparatus (10) for punching of sheet-like, with a tubular segment-like preferred cardboard materials receiving the temporarily punching plate (11; 11a), wherein in at least one corner region of the rectangular punching plate (11; 11a) is preferably a plate-like caliber element (16) is arranged, and wherein, in a between the corner intermediate region (18) at least one further caliber element is arranged, characterized in that the further caliber element as elongated caliber rod (20; 20a; 20b, 20c) is formed, and wherein the caliber rod (20; 20a; 20b, 20c) of a length / width ratio (l / b) of at least 5: 1.