| 摘要 |
<p>The device has a perpendicular push plate (4) for pushing a stopper (1) to a side edge (3) of a stack (2) at an end of the stopper. A clamping body (11) has a pivotal point (10) and an eccentric-shaped clamping unit (13) rotatable around the pivotal point perpendicular to a base plate (5). Distance between a surface of the clamping unit and the base element is reduced or increased by rotation of the clamping unit by the pivotal point, so that a frictional connection between a clamping plate (9) and the base plate is strengthened, reduced or reversed.</p> |
