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Novel full-automatic pre-overprinting method for photogravure press

A gravure printing machine, fully automatic technology, applied to printing machines, general parts of printing machinery, printing, etc., can solve the problems of time-consuming and labor-intensive, high scrap rate, etc., achieve high degree of automation, fast error correction response, and reduce pre-overprinting The effect of waste

Active Publication Date: 2021-05-28
SHAANXI BEIREN PRINTING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of fully automatic pre-registration method for gravure printing machines, which solves the problems of high reject rate, time-consuming and labor-intensive problems in the prior art that manual operation is used for pre-registration in the pre-printing process

Method used

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  • Novel full-automatic pre-overprinting method for photogravure press
  • Novel full-automatic pre-overprinting method for photogravure press
  • Novel full-automatic pre-overprinting method for photogravure press

Examples

Experimental program
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Effect test

Embodiment

[0048] Taking the automatic pre-registration method of a five-color (five color groups in total) printing machine as an example, the pre-registration process is as follows: Figure 3-8 shown.

[0049] Start-up operation, tension input, ink distribution and other preparations before start-up. After the printing material is fed smoothly, the amount of ink is uniform, and the tension is stable, the printing machine is linked, and the automatic locking button is pressed;

[0050] The printing press roller starts to press automatically from the fifth color. Since each color group is equipped with a color registration sensor, it can recognize and memorize the guide mark and color mark phase printed by the current color group. When the fifth color recognition is completed, the fourth color press roller Automatic pressing, the subsequent color group repeats the above steps until the first color pressure roller is pressed and the standard and phase of the color group are recognized an...

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Abstract

The invention discloses a novel full-automatic pre-overprinting method for a photogravure press. The method comprises the following steps that special manufacturing guide marks are engraved on all printing plate rollers according to the sizes; the transverse position of each color cell and the position of color register electric eyes are adjusted, and an automatic mark locking button is pressed; a color register pressing roller performs pressing from back to front, the guide marks printed through the current color registers are recognized through the color register electric eyes on the color registers, the color mark phases of the color registers are memorized, and all the color registers repeat the steps until the first color register completes guide mark recognition and mark type memorization; and the longitudinal error is corrected, and the pre-overprinting process is finished. According to the method, after a printing machine starts to work, the automation degree of the pre-overprinting work is high, the error correction response is fast, and the pre-overprinting precision is high; and full-automatic pre-overprinting operation is realized, and meanwhile, pre-overprinted waste products are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of printing machinery and equipment, and relates to a novel fully automatic pre-overprinting method for a gravure printing machine. Background technique [0002] For traditional electronic axis printing machines, the current electronic axis control system can realize automatic overprinting during the printing process, but pre-color registration is a very important process in the early stage of printing. After pre-color registration, the later overprinting can be more accurate. However, , the current pre-registration needs to be done manually by the operator. This part is subject to the experience of the operator, and the accuracy is low. Contents of the invention [0003] The purpose of the present invention is to provide a new type of fully automatic pre-registration method for gravure printing machines, which solves the problems of high reject rate, time-consuming and labor-intensive problems in the prio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M1/10B41F33/00
CPCB41M1/10B41F33/0036
Inventor 魏新平薛志成魏克亮陈明辉郭战号韩武
Owner SHAANXI BEIREN PRINTING MACHINERY
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