Paper cutting device for exercise book printing

The invention relates to the technical field of printing processing, in particular to a paper cutting device for exercise book printing, which comprises a mounting frame, synchronous belts for conveying paper are mounted at the upper end and the lower end of the mounting frame in a matching manner, a support is fixedly connected to the mounting frame, an air cylinder is fixedly mounted on the support, and a sliding plate is slidably mounted on the support in a sleeving manner. The air cylinder serves as a driving source, the air cylinder is used for driving the sliding plate to move downwards, the pressing plate movably abuts against paper, the sliding plate can continue to move downwards till the cutting operation of the cutting piece on the paper is completed, the pressing plate drives the movable rod to move upwards under the counter-acting force, the spring is extruded, and the downward acting force is applied to the pressing plate through the elastic force of the spring; compared with the prior art that