Paper cutting device for printing textbooks

The utility model discloses a paper cutting device for printing textbooks, and relates to the technical field of printing textbooks. The protective device comprises a protective plate, the bottom of the protective plate is fixedly connected with supporting legs, and the bottoms of the supporting legs are fixedly connected with non-slip mats; a fixing device is arranged at the top of the protection plate and comprises a fixing plate, a motor is fixedly connected to the side face of the fixing plate, and a bidirectional threaded rod is fixedly connected to an output shaft of the motor. According to the utility model, the motor drives the bidirectional threaded rod to rotate to drive the threaded sleeve to move in the horizontal direction to be matched with the positioning plate, the fixing plate, the rotating shaft and other components in the fixing device, so that the effect of driving the positioning plate to move in the horizontal direction through the horizontal displacement of the fixing block is realized;