Printing material quality online visual inspection system

Abstract

In order to solve the defect of low inspection precision of the printing material quality online visual inspection device, the invention provides a printing material quality online visual inspection system. An inspection machine box and an inspection assembly arranged on the inspection machine box are arranged in a small space formed by a printing cylinder, a transmission link, series inking rollers and an ink delivering roller which are arranged in the printer; one end of the inspection machine box, which is close to the printing cylinder, is provided with a slit which faces to the surface of the printing cylinder and is parallel to the rotating shaft of the printing cylinder; a light source assembly is positioned on one end, which is close to the printing cylinder, of the inspection machine box; a linear array cameral assembly is positioned on one end, which is far away the printing cylinder, of the inspection machine box, and shoots the picture of the printing material on the printing cylinder through the slit; and a coder is arranged on the rotating shaft of the printing cylinder. The invention can perform online inspection for the printing material on the printing cylinder, not only has high inspection precision, but also has smart design and small size, can not occupy additional space, and is suitable for the online inspection for special printing material and common printing material.

Description

technical field [0001] The invention belongs to the field of machine vision technology and industrial inspection technology, and in particular relates to a visual inspection system for printed matter quality. Background technique [0002] In the prior art, a device for real-time detection of paper printing quality has been installed on the printing machine, so as to detect printing waste in time and stop the machine for inspection as soon as possible. For example, the patent No. ZL00262013.8 is a Chinese utility model patent titled "on-line detection device for printing quality of RMB large sheets". The photoelectric encoder is set on the wheel shaft at the inflection point of the printing line. In this utility model patent, the detection device is installed under the crawler of the printing line, that is, the transmission chain. Detection, because the large banknotes in transmission are affected by the vibration of the transmission chain, the images collected by the detect...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defect of low detection accuracy caused by the vibration of the transmission chain in the online quality inspection device of printed matter in the prior art, the present invention provides an online visual inspection system for printed matter quality, which can detect the printed matter on the printing cylinder on-line. High height, ingenious design, small size, does not occupy additional external space

Images