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Method for operating printing press

A technology of printing presses and operating parameters, applied in printing presses, general parts of printing machinery, printing, etc., can solve the problem of high efficiency

Active Publication Date: 2019-08-02
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The downside to this is that the efficiency of axial fans is not equally high in all cases

Method used

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  • Method for operating printing press
  • Method for operating printing press

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Embodiment Construction

[0020] figure 1 A printing press 1 is shown in which a printing sheet 5 is printed by means of offset printing or inkjet printing. The printing press 1 has a stacker for collecting printed sheets 5 into stacks. In the stacker there is a chain gripper 2 which conveys printed sheets 5 to the stack. The chain gripper 2 comprises two revolving chains, which carry gripper bridges between them, which hold the front edge of the printing sheet 5 in a clamped state. These gripper bridges move along the gripper bridge track 3 . The lower return section (trume) of these two chains runs through the powder air channel 4 .

[0021] along the transport direction 9 of the printed sheet 5 (see figure 2 ) Dust the printed sheets 5 with powder before stacking. The dusting equipment required for this is not shown together in the figures. Powder that does not adhere to the printing sheet 5 reaches the powder air channel 4 and is dragged away by the chain gripper 2 .

[0022] figure 2 It ...

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Abstract

The invention relates to a method for operating a printing press, wherein sheets are conveyed with a chain gripper along a gripper bridge track (3) in a powder air channel (4). By a pneumatic seal (6), an air curtain (7) is emitted, which crosses the gripper bridge track (3). In this case, at least one operating parameter of the pneumatic seal (6) is set as a function of at least one operating parameter of the printing press.

Description

technical field [0001] The invention relates to a method for operating a printing press, in which a printing sheet is conveyed in a powder air channel along a gripper bridge rail by means of a chain gripper and an air curtain is projected through a pneumatic seal, which The air curtain intersects (kreuzt) the gripper bridge track. Background technique [0002] In the third drawing of document DE 196 43 747 A1 a device for applying a separating medium to a flat product is shown. In this device, the products are conveyed under a partition by means of a conveying device. An axial fan is arranged on the outlet-side end of the partition, the downwardly directed air flow of which generates an air curtain of the type that encloses the separating medium relative to the conveying path ( Abkapselung), while the separation medium does not reach the downstream section of the conveying path from the separator. [0003] A disadvantage of this is that the efficiency of axial fans is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F23/06B08B15/04
CPCB41F23/06B08B15/04B41F33/00
Inventor C·鲁帕纳C·哈斯
Owner HEIDELBERGER DRUCKMASCHINEN AG