| 摘要 |
The invention relates to a book block clamp ( 1 ) for clamping and transporting book blocks ( 2 ) in book block processing machines, comprising an inner clamping jaw ( 5 ) and comprising an outer clamping jaw ( 6 ) which is arranged parallel to, and movable in relation to, said inner clamping jaw ( 5 ). A support element ( 20 ) is associated with the outer clamping jaw ( 6 ), which support element ( 20 ) can be moved into a position that is spaced apart in parallel in relation to the outer clamping jaw ( 6 ), as a result of which the opening width of the book block clamp ( 1 ) is reduced, while the distance between the inner and the outer clamping jaw ( 5, 6 ) remains unchanged. By separately controlling the opening width, reliable and impeccable guidance, in particular of unstable layers and/or folded sections of unbound book blocks ( 2 ), becomes possible, while the opening- and/or closing movement of the outer clamping jaw ( 6 ) continues to be controlled by way of a fixed greater actuating stroke, and is thus free of any jerking or jolting.
|
