Robot welding system

The invention discloses a robot welding system which comprises a placing frame, a fixing seat, a mechanical arm, a welding head and a swing arm, the fixing seat is arranged on the side face of the placing frame, the mechanical arm is rotationally installed at the top end of the fixing seat, and the swing arm is rotationally installed at the top end of the mechanical arm. When the equipment is used, wire feeding and wire returning can be accurately controlled, so that when a robot is used for welding workpieces, wire feeding and wire returning can be more accurate, the accuracy of the equipment during operation is improved, the attractiveness of welded finished products of the equipment is greatly improved, the working quality of the equipment is more perfect, and the production efficiency is improved. According to the device, materials can be stably and efficiently welded, sparks generated during operation of the device can be controlled in the welding process, the spark sputtering range is reduced, the safet