| 摘要 |
<p>PURPOSE:To provide an inexpensive punch unit which can punch out a hole in paper fed at a high linear speed with no defect, and which has a small size since it can punch out a hole with a small drive force. CONSTITUTION:In a rotary punch in which a punch and a die 2 are provided to a pair of rollers, respectively, and the rollers 3a, 3b are rotated in opposite directions, respectively, so that the punch 1 and the die 2 are engaged together so as to punch out a hole in paper, a position where the punch 1 and the die 2 are stopped without carrying out punching, is set to be far from the engaging position between the punch 1 and the die 2.</p> |
