Device for automatically cleaning vertical press-fitting hydraulic cylinder and press-fitting method

The invention relates to a device for automatically cleaning a vertical press-fitting hydraulic cylinder and a press-fitting method, and belongs to the technical field of automatic assembly. A conveying line of the device is an annular conveying line; two robots, a press-fitting machine, a press-fitting and tightening all-in-one machine and an AGV conveying device are sequentially arranged from a workpiece feeding area to a workpiece discharging area of the conveying line in a matched mode. The conveying line is provided with a three-jaw clamping tray device, an outer cylinder barrel cleaning and conveying device and a piston rod assembly cleaning and conveying device which are matched with each other and are respectively provided with a cantilever crane; the press-fitting machine is used for assembling the piston rod assembly and the outer cylinder barrel, and the press-fitting and tightening all-in-one machine is used for assembling the guide sleeve assembly, the outer cylinder barrel and the piston rod ass