Automatic welding robot for tower feet

The utility model relates to an automatic tower foot welding robot which comprises a machine base and further comprises a machine frame fixedly connected to the two sides of the upper end of the machine base. The position changing mechanism is located between the racks; the supporting base is fixedly connected to one side of the upper end of the machine base; the mechanical arm is fixedly connected to the upper end of the supporting seat; a welding fume removing mechanism; a welding part is arranged at the end, away from the supporting base, of the mechanical arm, a clamping ring is fixedly connected to the outer side of the welding part, a plurality of clamping grooves are formed in the outer side of the clamping ring in the circumferential direction, first magnetic blocks are embedded in the bottoms of the clamping grooves, second magnetic blocks matched with the clamping grooves are fixedly connected to the outer side of the inlet end of the dust suction pipe in the circumferential direction, and the outle