| 摘要 |
A sheet stacker (1) comprises sheet conveyor arrangement (3) and a stacking bay (5), wherein sheets delivered by the sheet conveyor arrangement (3) are formed into stacks; the stacking bay comprising a stacker platform (19). The stacker platform (19) is provided with a vertical lifting and lowering movement with respect to a stationary supporting structure and is controlled to move downwards while a stack of sheets is formed thereon. The stacker platform (19) supports a stack conveyor (25) configured and controlled to perform at least an evacuation motion, to remove a completed stack from the stacking bay (5). The evacuation motion of the stack conveyor (25) is oriented such that a completed stack is moved from the stacking bay (5) onto an evacuation conveyor (53) arranged under the sheet conveyor arrangement (3). |
