Printed matter quality detecting machinery

The invention relates to printed matter quality detecting machinery. The printed matter quality detecting machinery comprises a paper feeding system, a detecting system, a detecting platform, a paper collection conveying system and two paper collection mechanisms, wherein the paper collection conveying system comprises a paper collection gripper, a fixed touch part, a movable touch part and a driving device; the paper collection gripper moves along an annular track; the two paper collection mechanisms are arranged below the moving track of the paper collection gripper; the fixed touch part and the movable touch part successively keep away from the detecting system in the conveying direction of the paper collection gripper, and are respectively positioned above one of the paper collection mechanisms; the movable touch part has two postures; the driving device is connected with the movable touch part; and the detecting system is in communication connection with the driving device. By the machinery, products with different qualities can be separately collected.