PCB welding device

The utility model relates to the technical field of plate welding, and discloses a PCB (printed circuit board) welding device, which comprises a base, a welding component and a sliding groove, and is characterized in that the welding component is arranged in the base, and the sliding groove is formed in the base; the cleaning assembly is fixedly mounted at the top of the base; wherein the cleaning assembly comprises a wind power part and a roller part; the welding assembly is arranged at the top of the base; wherein the welding assembly comprises a clamping part and a welding part; and the wind power part comprises a motor base. According to the utility model, the clamping part is arranged to fix the PCB, so that the welding effect is not influenced by displacement during welding, and meanwhile, the temperature sensor is fixedly arranged near the welding gun and is electrically connected with the warning lamp, so that when the temperature is too high, a worker can be prompted to keep the welding gun away from