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Method and device for processing gravure printing cylinders

A processing method and roller technology, applied in the preparation of printing surface, printing, printing plate preparation, etc., can solve the problems such as the inability to completely guarantee only the removal of the melt scar and the change of the printing pattern.

Active Publication Date: 2013-03-13
海尔雕刻系统有限责任两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no guarantee that only the scar will be removed when using this method
In unfavorable cases, the aggressive liquid can also act on the surrounding surfaces inside and outside the pockets, which can likewise lead to undesired changes in the printed pattern

Method used

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  • Method and device for processing gravure printing cylinders
  • Method and device for processing gravure printing cylinders

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Embodiment Construction

[0030] The device 2 for electrochemical treatment of the engraving gravure cylinder 4 shown in the figure is used for electrochemically flattening the metal coating surface on the gravure cylinder 4, such as peeling copper, especially the burrs and melt scars that exceed the surface Or other microscopic uneven structures are eroded away, and burrs, melt scars or other microscopic uneven structures appear along the edge of the cavity on the surface when the existing electromechanical engraving or laser engraving the cavity in the film layer.

[0031] The device 2 basically consists of an upper basin 6 and a lower basin 8 arranged under the upper basin 6 and used to contain the flowing electrolyte 10, and a lower basin 8 connected to the upper basin 6 and the lower basin 8 and used to transfer the electrolyte 10 from the bottom. The basin 8 is fed into a conveying pump 12 of an electrolyte tank 14 formed in the upper basin 6 and into which the engraved gravure cylinder 4 to be proce...

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PUM

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Abstract

The invention relates to a method and a device (2) for processing gravure printing cylinders (4), which have a metal surface, wells, which are engraved into the metal surface, and burrs or ejected material, which arise during engraving of the wells. To remove the burrs or ejected material, the gravure printing cylinder (4) having the engraved wells is immersed in an electrolyte bath (14), in which the burrs or ejected material are electrochemically ablated.

Description

Technical field [0001] The invention relates to a processing method and device for a gravure cylinder. Background technique [0002] A known method for manufacturing gravure cylinders by direct engraving is that the steel plate cylinder has a metal plating layer, which is usually in the form of a copper base layer and a peeled copper plated thereon, followed by a metal After the surface of the coating is polished, the cavity used to hold the printing ink during printing is directly engraved into the metal coating by means of an engraving machine. [0003] In the case where the metal plating layer is made of copper, the engraving of the cavity can be carried out electromechanically with a chip diamond carving knife extending into the copper plating layer or by means of a laser beam that evaporates or melts the plating metal by energy. In electromechanical engraving, the formation of tiny protruding burrs of several microns may appear along the edge of the cavity, while during laser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41C1/045B41C1/05B41C1/18B41N3/00
CPCB41C1/05B41C1/045B41N3/003B41C1/18
Inventor M·W·乌尔里希
Owner 海尔雕刻系统有限责任两合公司