Automatic electrostatic spray gun

The utility model relates to the technical field of spray guns, in particular to an automatic electrostatic spray gun which comprises a gun body, a spray head assembly, an electrostatic generation assembly, a powder spraying assembly and a mechanical arm, the spray head assembly is installed at the front end of the gun body, the electrostatic generation assembly is installed at one end of the gun body, and the powder spraying assembly is installed at one end of the spray head; a mounting seat is arranged at the lower end of the gun body, the mechanical arm is detachably connected with the mounting seat, a universal coupling is arranged at the upper end of the mounting seat, one end of the universal coupling is connected with the mounting seat, the gun body is connected with the other end of the universal coupling, a plurality of through holes are formed in the mounting seat, and the mechanical arm is provided with a mechanical clamp used in cooperation with the mounting seat. The mechanical arm is provided wi