Printing plate quality detection system and method

Abstract

The invention relates to a printing plate quality detection system and method. The system comprises a detection platform, an electric device, an image acquisition device and an image processing device, wherein the image acquisition device comprises an annular optical imaging light source, an area-array camera and a laser displacement sensor; the annular optical imaging light source comprises an annular frame body, a heat radiation sheet arranged on the outer side wall of the annular frame body and a plurality of LED (Light Emitting Diode) light sources arranged on the inner wall of the annular frame body; the annular optical imaging light source is used for uniformly illuminating in a focal plane of the area-array camera; the area-array camera is used for automatically scanning a detection object which is horizontally arranged on the detection platform under the irradiation of the annular optical imaging light source to acquire a high-quality image in the horizontal plane and carry out image pattern detection; the area-array camera or the laser displacement sensor is used for acquiring the depth of the detection object in the vertical direction so as to carry out depth measurement; the image processing device is used for carrying out data processing and analysis on image information to finish the quality detection. The system and the method have the advantages of high detection precision, high detection speed and high reliability.

Description

technical field [0001] The invention relates to the field of quality inspection based on machine vision technology, in particular to a printing plate quality inspection system and method. Background technique [0002] In order to achieve the long-term goal of free convertibility of RMB, it is an important prerequisite to ensure the quality of its printed products, and the quality of the original plate of banknote glue gravure printing and printing plate is the basis for ensuring the quality of printed products. Any quality problem in any of them will cause damage to the printed products. Quality has serious consequences. The printing plates tested include various offset original plates, offset printing plates, gravure original plates, gravure printing plates, etc. The detection object has a large format, the detection accuracy is extremely high, and the detection speed must be fast. [0003] At present, the detection of various printing plates is mainly carried out manuall...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that manual detection and the existing detection system can no longer meet the requirements for the detection accuracy and detection speed of the printing plate, the present invention provides a printing plate quality detection system, which has the advantages of high detection accuracy, fast detection speed and high reliability

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