Printing quality detection device of digital printing machine

The utility model discloses a printing quality detection device of a digital printing machine, and relates to the technical field of printing quality detection.The printing quality detection device comprises a bottom plate, a box body is installed at the top of the bottom plate, a feeding port is formed in one side of the box body, a discharging port is formed in the other side of the box body, and a conveying assembly is installed at the bottom of an inner cavity of the box body; the two ends of the conveying assembly extend out of the box body, and a first electric push rod is installed at one end of the top of an inner cavity of the box body. Through cooperative arrangement of a camera, a first electric push rod, a transparent calibration plate, a reference frame, a controller and an ink jet assembly, pictures shot by the camera are displayed and compared through a display screen, unqualified printed matters can be automatically sorted out, a traditional manual detection mode is changed, and the detection