Device and method for turning stacks of sheet-shaped material
AssigneeHeidelberger Druckmaschinen AG
InventorsWolfgang Diehr, Uwe Hartstock, René Heider, Tomasz Ollek
Life of this patent
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Abstract
A device and a method for turning stacks of sheet-shaped material include a device for transporting the stacks into a pivot fork. The pivot fork is part of a turning unit and includes upper grippers, lower grippers and a stack stop. The pivot fork is open on one side to receive the stacks. The pivot fork is supported at its other end to pivot on a horizontal pivot shaft that extends in a direction transverse to a direction of introduction of the stacks and is disposed off-center relative to the pivot fork.
Claims4
A method for turning stacks of sheet-shaped material, the method comprising the following steps:
- a) feeding a stack to a stack stop in a pivot fork;
- b) lifting the stack with height-adjustable lower grippers or by rotating the pivot fork;
- c) pivoting the pivot fork through a pivot angle of approximately 70°;
- d) aligning the stack against the stack stop and the lower grippers;
- e) clamping the stack between the lower grippers and upper grippers by adjusting a height of the lower grippers;
- f) continuing pivoting of the pivot fork until reaching a final position;
- g) withdrawing the upper grippers;
- h) depositing the turned stack;
- i) rotating the pivot fork back and extending the upper grippers into an initial position;
- and
- j) repeating steps a) to i) until all stacks have been processed;
- carrying out the steps b) through e) in sequential order from b) to e).
A method for turning stacks of sheet-shaped material, the method comprising the following steps:
- a) feeding a stack to a stack stop in a pivot fork;
- b) lifting the stack with height-adjustable lower grippers or by rotating the pivot fork;
- c) pivoting the pivot fork through a pivot angle of approximately 70°;
- d) aligning the stack against the stack stop and the lower grippers;
- e) clamping the stack between the lower grippers and upper grippers by adjusting a height of the lower grippers;
- f) continuing pivoting of the pivot fork until reaching a final position;
- g) withdrawing the upper grippers;
- h) depositing the turned stack;
- i) rotating the pivot fork back and extending the upper grippers into an initial position;
- and
- j) repeating steps a) to i) until all stacks have been processed;
- carrying out the steps a) through i) in sequential order from a) to i).
Dependencies are inferred from the claim text.