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Method and apparatus for the transport of printing plates

A printing plate and conveying plate technology, applied in the field of printing plates, can solve problems such as damage to the printing plate, interruption of the loosening process, sticking to the rubber cloth cylinder or on the inking or water forming roller, etc.

Active Publication Date: 2005-11-09
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Uncontrolled sticking of the printing plates in combination with residual ink or water on the printing plates when conveying the printing plates by means of pressing force, as is necessary for the printing run, especially when conveying used printing formes On blanket cylinders or on inking or dampening rollers, resulting in interruption of the unwinding process or even damage to the printing plate

Method used

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  • Method and apparatus for the transport of printing plates
  • Method and apparatus for the transport of printing plates

Examples

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Embodiment Construction

[0020] A machine for processing sheets 7 , for example a printing press 1 , has a feeder 2 , at least one printing unit 3 or 4 and a delivery 6 . The sheets 7 are removed from a sheet stack 8 and fed individually or in sheets via a transport table 9 to the printing units 3 and 4 . These printing units each comprise a printing form cylinder 11; 12 in a known manner. The printing plate cylinders 11 and 12 each have a device 13 , 14 for fixing a flexographic printing plate. In addition, a device 16 ; 17 for semi-automatic or fully automatic changing of printing plates is assigned to each printing plate cylinder 11 ; 12 .

[0021] The sheet stack 8 rests on a stack floor 10 which can be raised under control. The sheets 7 are removed from the top of the sheet stack 8 by means of a so-called suction head 18, which also has several reciprocating and dragging suction devices (Hub- und Schleppsaugern) 19, 21. Furthermore, a blower device 22 for loosening the upper sheet layer and a...

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PUM

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Abstract

An apparatus positions a plate cylinder and a blanket cylinder in a transport position for assisting in transporting printing plates. The apparatus spaces the blanket cylinder and plate cylinder apart from one another such that a pressure acting on a printing plate during the printing operation is reduced in the transport position. Optionally, one of the cylinders can be replaced with an inking and / or damping roller.

Description

technical field [0001] The invention relates to a method and a device for conveying sheet-like material, in particular printing plates, by means of cylinders in a printing press. Background technique [0002] It is known to use cylinders or rollers that interact with the printing forme during the printing run when feeding the printing forme to the forme cylinder of the printing press or when discharging the used printing forme from the forme cylinder of the printing press. This is, for example, a blanket cylinder on the one hand and an inking or dampening roller on the other. [0003] WO 94 / 06630 discloses a plate cylinder of a rotary printing press, which cooperates with one of the ink form rollers or damper rollers when delivering the used printing plates, in order to realize the conveyance of the printing plates into a plate store . [0004] Uncontrolled sticking of the printing plates in combination with residual ink or water on the printing plates when conveying the p...

Claims

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Application Information

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IPC IPC(8): B41F27/12B41F13/28B41F13/40B41L47/14
CPCB41F13/28B41F27/1206B41F13/40
Inventor 马蒂亚斯·朱伯
Owner HEIDELBERGER DRUCKMASCHINEN AG
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