Curved surface printing device

The utility model relates to the technical field of printing devices, in particular to a curved surface printing device which comprises an installation plate, a conveying belt, an installation frame and an ink conveying assembly are fixedly installed at the top of the installation plate, the conveying belt is located in the installation frame, and an air cylinder is fixedly installed at the bottom in the installation frame. A connecting plate is fixedly installed at the telescopic end of the air cylinder, an ink box is fixedly installed at the bottom of the connecting plate, a printing head is fixedly installed at the bottom of the ink box, rotating assemblies are installed on the two sides of the inner wall of the conveying belt, and clamping assemblies are installed on the rotating assemblies. Through the arrangement of the clamping assembly, the rotating assembly and the special-shaped adapting assembly, objects with different curved surfaces can be clamped conveniently, unnecessary loss caused by falling