Storage and stacking device for sheets of laminar material
AssigneeFosber S.p.A.
InventorMauro Adami
Life of this patent
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Abstract
An automatic storage and stacking device for sheets of laminar material, such as corrugated cardboard or the like, comprises a transportation unit which removes the sheets of laminar material from a cutting group, overlaps them and conveys them towards a storage surface. The transportation unit comprises a plurality of conveyors in series which can be operated at varying speeds so as to allow separation of a first series of sheets from a successive second series of sheets; with one of said conveyors there is associated a retaining means for holding the rear portion of the first sheet of said second series, which retaining means comprises a gripper member able to perform an alternating movement along the conveyor with which said gripper member is associated.
Claims12
An automatic storage and stacking device for sheets of laminar material, such as corrugated cardboard or the like, comprising a conveyor including a transportation unit which removes the sheets of laminar material from a cutting group, overlaps said sheets and conveys them towards a storage surface, said transportation unit including a plurality of conveyors in series, with means to move said conveyors at varying speeds so as to allow separation of a first series of sheets from a successive second series of sheets;
- and combined with one of said conveyors a means for lifting the first sheet of said second series, characterized in that said lifting means includes a gripper member associated with said one of said conveyors and including an upper and a lower gripping means which are reciprocatingly moved along said one of said conveyors with which said gripper member is associated, and that said lower gripping means is arranged below the trajectory of said overlapped sheets and said upper gripping means is arranged above the trajectory of said overlapped sheets, said lower gripping means being movable from a first position wherein it is clear of the sheets, to a second position wherein it lifts said first sheet from said one of said conveyors with which said gripper member is associated.
An automatic storage and stacking device for sheets of laminar material, such as corrugated cardboard or the like, comprising a conveyor including a transportation unit which removes the sheets of laminar material from a cutting group, overlaps said sheets and conveys them towards a storage surface, said transportation unit including a plurality of conveyors in series, with means to move said conveyors at varying speeds so as to allow separation of a first series of sheets from a successive second series of sheets;
- and combined with one of said conveyors a means for lifting the first sheet of said second series, characterized in that said lifting means includes a gripper member associated with said one of said conveyors able to perform a reciprocating movement along said one of said conveyors with which said gripper member is associated, and that said gripper member includes a lower gripping means which is arranged below the trajectory of said overlapped sheets and an upper gripping means arranged above the trajectory of said overlapped sheets, said lower gripping means being movable from a first position wherein it is clear of the sheets, to a second position wherein it lifts said first sheet from said one of said conveyors with which said gripper member is associated, and that, during the forward travel in the direction of movement of said one of said conveyors with which it is associated, said gripper member advances at a constant speed and said one of said conveyors with which it is associated advances at a faster speed for a period of time necessary for unloading the last sheet of the first series and subsequently at a slower speed equal to the speed of forward movement of the gripper member.
An automatic storage and stacking device for sheets of laminar material, such as corrugated cardboard or the like, comprising a conveyor including a transportation unit which removes the sheets of laminar material from a cutting group, overlaps said sheets and conveys them towards a storage surface, said transportation unit including a plurality of conveyors in series, with means to move said conveyors at varying speeds so as to allow separation of a first series of sheets from a successive second series of sheets;
- and combined with one of said conveyors a means for lifting the first sheet of said second series, characterized in that said lifting means includes a gripper member associated with said one of said conveyors able to perform a reciprocating movement along said one of said conveyors with which said gripper member is associated, and that said gripper member includes a lower gripping means which is arranged below the trajectory of said overlapped sheets and an upper gripping means arranged above the trajectory of said overlapped sheets, said lower gripping means being movable from a first position wherein it is clear of the sheets, to a second position wherein it lifts said first sheet from said one of said conveyors with which said gripper member is associated, and that said gripper member comprises a carriage including a bar arranged transversely with respect to said one of said conveyors with which said gripper member is associated and, above said bar, a clamp member oscillating between an inactive position and a position in which it cooperates with said bar, so as to clamp the sheet of laminar material between said bar and said oscillating clamp member, said bar being vertically movable so as to cooperate with said oscillating clamp member.
Dependencies are inferred from the claim text.