Bow boom

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The sheet delivery (also sheet delivery or sheet deposit ) is a term from printing technology and describes a device on sheet-fed printing machines that stacks the sheets after printing.

In sheetfed printing machines, printed sheets are transported from a sheet feeder via the printing units to a sheet delivery and deposited on a stack. Each sheet must be decelerated from the maximum conveying speed to a rest position and at the same time lowered onto the stack from a floating position. Difficulties can arise here, as the following sheet can hit the trailing edge of the sheet to be laid out. Blowing devices that push the sheet to be laid down serve as an aid. A problem also arises from the resulting air resistance between the sheet and the stack, which is released by the removal gripper.

Modern sheet delivery devices are equipped with a NON-STOP device so that there is no need to stand at the machine when changing piles. When the stack is full, a so-called rake is simply inserted between the sheets. The stack change in the delivery takes place at full speed and without interruption.

literature

  • Helmut Kipphan (Hrsg.): Handbuch der Printmedien. Technologies and production processes. Verlag Springer, Berlin et al. 2000, ISBN 3-540-66941-8 .