Process for testing quality of presswork

Abstract

The invention relates to a process for testing quality of presswork. The process comprises the following steps that: A, a visual testing device tests the presswork to be detected; B, if any defect is tested, the visual testing device records position information of the defect in the presswork; C, the presswork is transferred to overwinding equipment besides the visual testing device for rewinding, and the overwinding equipment acquires and stores the position information of the defect in the presswork in the step B; D, the overwinding equipment compares the stored position information of the defect in the presswork with the position information acquired when the presswork is rewound; and E, when the presswork is transferred to the defect position, the overwinding equipment stops rewinding. The process for testing the quality of the presswork realizes separation of detection and treatment, and can lighten burden of the visual testing device, so the visual testing device is only responsible for detection, and then the presswork is placed to another overwinding equipment for special rechecking and treatment of the defect to ensure that the efficiency of presswork quality testing is improved.

Description

technical field [0001] The invention relates to a print quality detection technology, in particular to a technique capable of improving the print quality detection efficiency. Background technique [0002] In recent years, the domestic printing industry has maintained a high-speed growth trend. However, with the expansion of the industry, the competition in the industry has become increasingly fierce. At the same time, the ever-increasing quality requirements from clients have also put forward higher requirements for printing companies. At present, label printing enterprises are faced with the problems of heavy quality inspection workload, shipment capacity cannot accurately match production capacity, increased missed inspections, increased reverse orders, and increased labor costs. [0003] Most large enterprises in the industry have started to use visual inspection equipment for quality control. Visual inspection equipment can effectively improve the quality level, reduce...

AI Technical Summary

Problems solved by technology

The setting of marking device or inkjet device increases the cost, manual marking increases the labor cost and there will be missing marks, which affects the accuracy of quality inspection

Moreover, since this method of marking detection and re-inspection does not have the cooperation of high-precision automation equipment, the entire printed matter quality inspection process takes a long time and cannot improve the detection efficiency.

[0007] 2) Insufficient ability to detect special defects

However, there are common problems in the detection of products with special optical characteristics such as scratches, bubbles, poor shape, size, spacing, etc.

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