Back to results
US 4,047,474 AGranted
Apparatus for separating and stacking blanks of a die cut sheet
AssigneeJ. Bobst & Fils, S.A.
InventorPierre Lang
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeJ. Bobst & Fils, S.A.
InventorPierre Lang
Estimating the term…
An apparatus for separating a plurality of interconnected blanks formed in a sheet and for stacking the separate blanks in a plurality of designated stacks characterized by an input carrier receiving a sheet such as from a delivery end of a die cutting platen press and transports it to a separating unit which separates the interconnected blanks from each other and forms a flow having spaced rows of spaced blanks with the position and sequence of the blanks in the flow being the same as their position and sequence in the sheet. The stacking unit receives the flow and utilizes a suction unit for each of the rows in the flow which unit preferably comprises a belt of pervious material moving along a suction chamber to engage an upper surface of the blanks and transports the engaged blanks to a position above their respective designated stacks. At a position above the designated stacks, peeling devices such as lever arms cause the peeling of the blank from the suction unit to be deposited in a stack on a stack supporting member which is preferably mounted by an elevator structure to enable lowering the support to facilitate removal of the stacks formed thereon.
An apparatus for separating a plurality of interconnected blanks formed in at least one row in a sheet and for stacking the separated blanks in a plurality of designated stacks, comprising an input means for receiving the sheet with each row of blanks extending parallel to the direction of movement of the sheet in the input means, separating means arranged to receive a sheet from the input means and to separate the blanks into a flow of spaced blanks with the blanks of each row moving in a path one after another, and stacking means for depositing the separate blanks in designated stacks including a frame, means mounted on the frame for supporting each of the designated stacks and including means for receiving a separate designated stack for each of the blanks in a row of the sheet, suction means for each row of blanks mounted on the frame above the support means for engaging an upper surface of each of the blanks of the row and transporting each of the engaged blanks to a position above the means for receiving for its designated stack on the support means, and means for releasing the blank from the suction means to cause the depositing of each blank onto its designated stack, said means for releasing comprising a peeling member mounted for pivotable movement at each of said designated stacks, and means for simultaneously pivoting each of the peeling members from a first position withdrawn from the path of a blank being transported on the suction means and a second position extending across the path of the blank at an angle so that all of the blanks are simultaneously peeled from the suction means and deposited into their respective stacks.
Dependencies are inferred from the claim text.