Printing device for bus bar

The invention provides a printing device for a bus bar. The printing device comprises a fixing frame; the conveying mechanism is arranged on the fixing frame and comprises two lifting assemblies which are arranged in the first direction in a spaced mode, and the two lifting assemblies are used for lifting a bus bar; the printing mechanism is installed on the fixing frame and located between the two lifting assemblies, the printing mechanism comprises a first printing assembly and a second printing assembly which are oppositely arranged in the second direction and can rotate, and the first direction is perpendicular to the second direction; first convex teeth arranged around a shaft are formed on the periphery of the second printing assembly, a plane matched with the width of the bus bar is formed at the end of each first convex tooth, and the lower surface of the bus bar abuts against the plane; the ink injection assembly is installed on the fixing frame. According to the device, ink printing on one side of t