High-precision welding positioner

The invention discloses a high-precision welding positioner, which belongs to the field of welding positioning devices and comprises a welding positioner body, a pair of laser imaging cylinders are arranged at the lower end of the welding positioner body, laser heads are fixedly connected in the laser imaging cylinders, and protective taper sleeves are fixedly connected to the lower ends of the laser imaging cylinders. The lower end of the protection taper sleeve is connected with a laser control cylinder matched with the laser head, the outer end of the protection taper sleeve is fixedly connected with a plurality of light sensation regulation and control assemblies, and the outer ends of the light sensation regulation and control assemblies are connected with reflective shielding arc pieces. And the diffusion degree of the laser control cylinder is controlled, so that the diffusion scattering effect of the laser head is improved, the imaging quality of the laser head is improved, the positioning error of th