A Gravure Printing Machine with Accurate and Quick Positioning of Printing Plates

Abstract

A gravure printing machine with accurate and quick positioning of the printing plate, comprising a fuselage, a printing plate cylinder and a printing plate; the printing plate is arranged on the printing plate cylinder; the printing plate cylinder is arranged on the fuselage; the fuselage There is a positioning and calibrating device on it; the positioning and calibrating device includes a base, a ruler fixing seat, a scale, a limit post and fixing screws; the base is arranged on the fuselage; the ruler fixing seat can be rotated on the base ; The scale is fixed on the scale fixing base by fixing screws; the base is provided with a limit post for limiting the position of the scale fixing base. The invention can greatly improve the installation accuracy of the printing plate, reduce the labor intensity of workers, and improve the production efficiency.

Description

technical field [0001] The invention relates to a gravure printing machine, in particular to a gravure printing machine which can accurately and quickly position a printing plate, and belongs to the technical field of printing. Background technique [0002] Gravure printing technology is a popular anti-counterfeiting printing technology. In high-end anti-counterfeiting printing such as securities, sheet-fed gravure printing machines play an important role. The main structure of the sheet-fed gravure printing machine is composed of paper feeding, ink feeding, printing, plate wiping, and paper delivery. The cylinder of the printing part includes an impression cylinder, a color mold cylinder and a printing plate cylinder. Among them, the printing plate cylinder Three printing plates will be installed, requiring each printing plate to be installed in the same position; in the current installation process, the operator uses a combination of movable scales and positioning blocks t...

AI Technical Summary

Problems solved by technology

The main structure of the sheet-fed gravure printing machine is composed of paper feeding, ink feeding, printing, plate wiping, and paper delivery. The cylinder of the printing part includes an impression cylinder, a color mold cylinder and a printing plate cylinder. Among them, the printing plate cylinder Three printing plates will be installed, requiring each printing plate to be installed in the same position; in the current installation process, the operator uses a combination of movable scales and positioning blocks to individually position each printing plate to install the printing plate , the disadvantage of this method is that each printing plate needs to be installed with its corresponding positioning block as a reference, that is, three sets of positioning blocks are set corresponding to the three printing plates, and there will inevitably be errors in the installation positions of the three sets of positioning blocks, making the reference It is impossible to guarantee uniformity, and it is difficult to quickly and accurately position the printing plate. In actual production, it is necessary to adjust the printing plate several times through trial printing to meet the requirements for use; secondly, each time a printing plate is positioned, the ruler needs to be removed, and then Install it on the corresponding positioning block, and then perform positioning. This positioning process is very time-consuming and labor-intensive, which leads to a long time for positioning the printing plate and affects production efficiency. In order to solve these problems, a positioning calibration device that can unify the reference is needed. , so that the printing plate can be accurately and quickly installed on the printing plate cylinder

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