Drying device of carton printing machine

The utility model relates to the technical field of printing machine drying, and discloses a carton printing machine drying device which comprises a drying machine body, folding curtains are fixedly connected to the two sides of the drying machine body, a ventilation groove is fixedly connected to the upper end in the drying machine body, and a plurality of supporting rods are fixedly connected to the lower end in the drying machine body. The upper end of the supporting rod is fixedly connected with a fixing table. According to the carton fixing device, a carton can be placed at the upper end of the fixing table through the fixing table, the position of the fixing plate can be adjusted up and down according to the size of the carton, and the distance between the fixing frames on the two sides is adjusted through the electric telescopic rods according to the size of the carton to fix the carton; the rotating motor fixed to one side of the fixing frame can drive a carton to rotate, the lower end of the carton c