| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sheet hole-punching device preventing a punching failure and large vibration noises although it is subjected to variation in punching load due to variation in thicknesses of sheets. <P>SOLUTION: A plurality of punching members classified into first and second groups are vertically movably provided on a base frame. When continuous punching motion takes place on a plurality of sheets by transmitting rotary motion to the plurality of punching members through a gearing member which reciprocates between first and second positions, the gearing member is controlled to approach a coupling of a driving motor when a first sheet is punched or a cardboard sheet is punched. <P>COPYRIGHT: (C)2012,JPO&INPIT |
