A method of separating blanks from a stack includes positioning a magnetic field generator in a fixed location proximate a peripheral edge of an upper portion of the stack, activating the magnetic field generator such that eddy currents are generated and result in a force vector in a direction away from a top-most blank of the stack, and pushing a blank, or multiple blanks, immediately below the top-most blank away from the top-most blank by the eddy currents.

A magnetic device for magnetically coupling to a ferromagnetic body, comprises a housing having a central bore. A plurality of pole sectors arranged within an envelope of the central bore and forming a workpiece contact interface of the magnetic device, each of the plurality of pole sectors comprising a plurality of spaced-apart pole portions arranged at respective distances, wherein a recess of a plurality of recesses separates each pole portion of the plurality of pole portions, wherein a first sector forms a first pole of the magnetic device and a second sector forms a second pole of the magnetic device. A first permanent magnet. A second permanent being moveable relative to the first permanent magnet. And, an actuator operatively coupled to the at least one second permanent magnet to move the at least one second permanent magnet relative to the at least one first permanent magnet.

A magnetic device for magnetically coupling to a ferromagnetic body, comprises a housing having a central bore. A plurality of pole sectors arranged within an envelope of the central bore and forming a workpiece contact interface of the magnetic device, each of the plurality of pole sectors comprising a plurality of spaced-apart pole portions arranged at respective distances, wherein a recess of a plurality of recesses separates each pole portion of the plurality of pole portions, wherein a first sector forms a first pole of the magnetic device and a second sector forms a second pole of the magnetic device. A first permanent magnet. A second permanent being moveable relative to the first permanent magnet. And, an actuator operatively coupled to the at least one second permanent magnet to move the at least one second permanent magnet relative to the at least one first permanent magnet.

A method of separating blanks from a stack includes positioning a magnetic field generator in a fixed location proximate a peripheral edge of an upper portion of the stack, activating the magnetic field generator such that eddy currents are generated and result in a force vector in a direction away from a top-most blank of the stack, and pushing a blank, or multiple blanks, immediately below the top-most blank away from the top-most blank by the eddy currents.

A method of separating blanks from a stack includes positioning a magnetic field generator in a fixed location proximate a peripheral edge of an upper portion of the stack, activating the magnetic field generator such that eddy currents are generated and result in a force vector in a direction away from a top-most blank of the stack, and pushing a blank, or multiple blanks, immediately below the top-most blank away from the top-most blank by the eddy currents.

In a destacking device comprising a stacking magazine (2), the respective lowest sheet of a stack (1) of metal sheets is destacked by way of a suction element (5, 15). This element can be moved upward and downward by way of a drive (6). At the end of the upward movement, the respective lowest metal sheet (4) of the stack (1) is gripped by suction power and pulled from the stack. A second suction element (5, 15) is provided, which can be moved upward and downward by way of a drive (6) and by way of which the lowest sheet (4) of the stack (1) can be gripped at the end of the upward movement. The second suction element is driven so as to be leading with respect to the first suction element, so that the respective lowest sheet (4) of the stack (1) can first be pulled from the stack by the second suction element (5), and subsequently by the first suction element (5). In this way, it becomes possible to destack thin sheets having a thickness of only 0.12 mm and a square shape without disruption. The stack is held magnetically in the stacking magazine, which facilitates destacking.

A material separation device comprises a placement component, a blower, a suction component, a suction pad driver, and a controller. The blower blows air at a plurality of aluminum sheets that have been stacked on the placement component to float an uppermost aluminum sheet. The suction component uses suction pads to chuck and hold the uppermost aluminum sheet from above while the air is being blown. The suction pad driver drives the suction component up and down, using servomotors as a drive source. The controller performs control so that the suction pads chucking the aluminum sheet are raised to a temporary stopping position by the suction pad driver, and the suction pads are stopped for a predetermined length of time at the temporary stopping position while the air is stopped, and the suction pads are then raised by the suction pad drivers to a conveyance position.

A material separation device comprises a placement component, a blower, a suction component, a suction pad driver, and a controller. The blower blows air at a plurality of aluminum sheets that have been stacked on the placement component to float an uppermost aluminum sheet. The suction component uses suction pads to chuck and hold the uppermost aluminum sheet from above while the air is being blown. The suction pad driver drives the suction component up and down, using servomotors as a drive source. The controller performs control so that the suction pads chucking the aluminum sheet are raised to a temporary stopping position by the suction pad driver, and the suction pads are stopped for a predetermined length of time at the temporary stopping position while the air is stopped, and the suction pads are then raised by the suction pad drivers to a conveyance position.

A first robot (104) is arranged in association with a belt conveyor (101), and performs a first transfer operation of picking up a product such as a blank material conveyed by the belt conveyor (101) and stacking it on a relay table (102). A second robot (108) performs a second transfer operation of transferring a loaded body of a plurality of blank materials stacked on the relay table (102) to a pallet table (103).

A main object of the invention is to provide a sheet material separation-aiding apparatus that ensures that there can be a gap produced stably between a specific sheet material from a stack of sheet materials and a sheet material just below it, and that achieves size reductions, reduced energy consumptions and a decreased parts count. As shown in FIG. 4, the sheet material separation-aiding apparatus 1 comprises a rotating means 2 including an abutment portion 21 that is capable of coming in abutment on an end of the uppermost sheet material 101, a supporting means 3 that supports the rotating means 2 in a rotatable manner and is capable of moving in a vertical direction, a biasing means 4 that biases the supporting means 3 in a downward direction, and a lifting means 5 that lifts up an end 23 of the rotating means 2 in opposition to the abutment portion 21. As the end 23 is lifted up, it causes the rotating means 2 to rotate with the abutment portion 21 coming in abutment on the end of the sheet material 101, and as the end 23 is further lifted up, it causes the supporting means 3 and rotating means 2 to keep on going up while the rotating means 2 is kept from rotation by a counterforce that the abutment portion 21 receives from the sheet material 101.