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US 5,102,293 AGranted
Unstacking apparatus for removing a partial stack from a stack of sheets
AssigneeIngenieurburo Willi Schneider
InventorWilli Schneider
Life of this patent
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AssigneeIngenieurburo Willi Schneider
InventorWilli Schneider
Estimating the term…
Two vertically displaceable slides (5, 9) carry in horizontally movable fashion a tabletop (1) and, respectively, a gripper with an upper gripper jaw (6) and a gripper base (7). The gripper base (7) contains a horizontally displaceable blade (12) and supporting elements (24, 25) which are horizontally displaceable and also vertically movable with respect to the blade (12). A Stack of sheets is set up in front of the tabletop (1). The slides (5, 9) are lowered until the upper gripper jaw (6) rests on the sheet stack. The blade (12), previously retracted into the gripper base (7), is then made to pierce the stack of sheets at an exactly settable distance below the upper gripper jaw (6). The slides (5, 9) are slightly elevated in order to form a gap in the sheet stack with the blade (12). The supporting elements (24, 25) are pushed into the gap below the blade (12), and are then urged upwardly past the level of the blade (12) so that they alone bear the weight of the sheets resting thereon. Upon further elevation of the slides (5, 9) until the tabletop (1) can be introduced into the gap, the blade (12) thus cannot damage the sheets.
Unstacking apparatus for the removal of a partial stack from a sheet stack (3) disposed on a supporting surface (2), with a tabletop (1) mounted on a table guideway (5) horizontally movable relative to the aforementioned supporting surface (2), a gripper comprising an upper gripper jaw (6) and a gripper base (7) for seizing and holding an edge of a partial stack (3.1), and a vertical adjustment device for executing vertical relative motions between the tabletop (1) and the gripper (6, 7), on the one hand, and the supporting surface (2), on the other hand, the gripper base (7) containing a blade guide (11), a horizontal blade (12), and a blade derive mechanism (13) for effecting horizontal motions of the blade (12) with respect to the blade guide (11), at least one supporting element (24, 25) mounted beside the blade, and a supporting element adjustment device (26, 27, 28) for executing horizontal movements of the supporting element (24, 25) with respect to the blade guide (11);
Unstacking apparatus for the removal of a partial stack from a sheet stack (3) disposed on a supporting surface (2), with a tabletop (1) mounted on a table guideway horizontally movable relative to the aforementioned supporting surface (2), a gripper comprising an upper gripper jaw (6) and a gripper base (7) for seizing and holding an edge of a partial stack (3.1), and a vertical adjustment device for executing vertical relative motions between the tabletop (1) and the gripper (6, 7), on the one hand, and the supporting surface (2), on the other hand, characterized in that the gripper base (7) contains a blade guide (11), a horizontal blade (12), and a blade drive mechanism (13) for effecting horizontal motions of the blade (12) with respect to the blade guide (11) and to the upper gripper jaw, at least one supporting element (24, 25) mounted beside the blade, and a supporting element adjustment device (26, 27, 28) for executing horizontal movements of the supporting element (24, 25) with respect to the blade guide (11) and to the upper gripper jaw;
Unstacking apparatus for the removal of a partial stack from a sheet stack (3) disposed on a supporting surface (2), with a tabletop (1) mounted on a table guideway horizontally movable relative to the aforementioned supporting surface (2), a gripper comprising an upper gripper jaw (6) and a gripper base (7) for seizing and holding an edge of a partial stack (3.1), and a vertical adjustment device for executing vertical relative motions between the tabletop (1) and the gripper (6, 7), on the one hand, and the supporting surface (2), on the other hand, characterized in that the gripper base (7) contains a blade guide (11), a horizontal blade (12), and a blade drive mechanism (13) for effecting horizontal motions of the blade (12) with respect to the blade guide (11) and to the upper gripper jaw, at least one supporting element (24, 25) mounted beside the blade, and a supporting element adjustment device (26, 27, 28) for executing horizontal movements of the supporting element (24, 25) with respect to the blade guide (11) and to the upper gripper jaw;
Dependencies are inferred from the claim text.