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Washing device for a cylinder in a printing machine

A technology for washing devices and printing presses, which is applied to printing presses, general parts of printing machinery, printing, etc., and can solve problems such as being unsuitable for cleaning the surface of cylinders quickly.

Inactive Publication Date: 2012-05-23
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This washing device is not suitable for quickly cleaning the surface of the drum

Method used

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  • Washing device for a cylinder in a printing machine
  • Washing device for a cylinder in a printing machine
  • Washing device for a cylinder in a printing machine

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0049] Figure 9A schematic view of a cylinder in a printing unit of an offset printing press is shown in a plane perpendicular to the axis of the cylinder. Denoted by PZ is the so-called printing plate cylinder, on which the printing forme inked by the rollers of the inking unit (not shown) is fixed by the clamping device in the clamping channel. The printing image on the printing plate is transferred during the rotation of the cylinder to the blanket GT, which is stretched on the blanket cylinder GTZ indicated below it. PB denotes the printed sheet which is passed between the blanket cylinder GTZ and the impression cylinder GDZ and is printed here by the inked blanket GT.

[0050] For washing of the blankets—as usual in offset printing presses—a blanket washing device GTW is provided, which can be pressed onto the blanket cylinder GTZ along the arrow P during a job change after a printing run . The washing device GTW generally comprises a washing cloth 10 which is periodi...

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PUM

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Abstract

The present invention relates to a washing device of a roller used in a printer, which comprises a washing cloth that is used for eliminating dirt, printing ink, etc. from the surface of the roller, and an ultrasonic wave source used for supporting the washing course. The ultrasonic wave source orients the sound energy to the surface of the roller. The washing device is characterized in that a focusing device (59) is provided in front of the ultrasonic wave source (53). The focusing device focuses the sound energy to a focusing area which is basically linear on the surface of the roller and extends parallel with the axis of the roller.

Description

technical field [0001] The invention relates to a washing device for a cylinder in a printing press, comprising a washing cloth and an ultrasonic source which directs the acoustic energy onto the surface of the cylinder. Background technique [0002] Such a washing device is known, for example, from WO 03 / 011599. In this document, to support the washing process, an ultrasonic source is provided for the easy removal of dirt, ink, etc. from the surface of a washing cloth stretched onto a transfer cylinder in an offset printing press . Furthermore, a cloth washing device for digital printing presses is described in DE 100 63 987 A1. In this document, in order to clean the cylinder bearing the printed image, an ultrasonic actuator can be applied to a cleaning cloth soaked with liquid on the surface of the cylinder. Furthermore, DE 19732060 describes a washing device for blanket cylinders of offset printing presses, which has an ultrasonic generator but without washing cloths....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F35/00
CPCB41P2235/24B41F35/00B41P2235/14
Inventor G·拉施R·德格纳
Owner HEIDELBERGER DRUCKMASCHINEN AG