Cylindrical surface printing apparatus

The utility model belongs to the technical field of ink-jet printing, and provides a cylindrical surface printing device which comprises a supporting surface, a printing assembly, a first driving assembly and a clamping mechanism. The supporting surface is used for supporting a cylindrical object; the first driving assembly is used for driving the printing assembly to move in the first direction. The clamping mechanism is used for clamping a cylindrical object, and the clamping mechanism and the printing assembly synchronously move in the first direction so that the cylindrical object can roll on the supporting face in the first direction; and a spray head in the printing assembly prints the surface of the cylindrical object in the rolling process of the cylindrical object. According to the utility model, the nozzle in the printing assembly prints the surface of the cylindrical object in the process of rolling with the cylindrical object, so that the cylindrical surface can be printed by the printing equipmen