Nut detection device for fixed spot welding machine during welding

The utility model relates to the technical field of nut welding, and discloses a nut detection device for a fixed spot welding machine during welding, which comprises a spot welding machine main body, a welding platform is mounted in the middle of the spot welding machine main body, a material component is mounted at the top of the welding platform, and a welding mechanism is connected to the top of the spot welding machine main body. The bottom of the welding mechanism is aligned with the material assembly, one side of the bottom of the welding mechanism is connected with a linkage plate, and one side of the linkage plate is aligned with a photoelectric sensor. After the linkage plate, the photoelectric sensor, the photoelectric controller and the guide component are comprehensively assembled, a synchronous detection structure is formed, and after the synchronous detection structure is used in cooperation with a fixed spot welding machine composed of the spot welding machine body, the welding platform and th