Motor rotor spot welding device

The utility model relates to the technical field of motor rotor electric welding, in particular to a motor rotor spot welding device which comprises a device body, a machine frame and an adjusting assembly, the adjusting assembly comprises a spot welding disc, a first motor, a rotating bearing, a second motor, a transmission mechanism and an air cylinder, and the device body comprises a controller, a machine frame and a welding wire box. An operation panel is arranged on the front portion of the controller, operation buttons are installed on the lower portion of the operation panel, a displayer is installed on the upper sides of the operation buttons, the lower portion of the welding wire box is fixedly connected with an electromagnetic push rod through a welding wire guide pipe, a welding gun is arranged on the lower portion of the electromagnetic push rod, and a plurality of rotating bearings are arranged on the spot welding disc. When the spot welding device is used, a rotor is placed in the rotating beari