The invention relates to the technical field of LED substrate production, in particular to a positioning device for LED
substrate surface mounting, which comprises a base, a
workbench, a guide plate, a positioning plate, a fixed seat, a sliding column and the like, a
workbench is connected to the base, a guide plate is connected to the middle of the
workbench, a guide groove is formed in the guide plate, a positioning plate is slidably connected to the guide plate through the guide groove, a positioning
assembly is connected to the guide plate, two fixing seats are connected to the front side of the base, and sliding columns are slidably connected to the sides, close to each other, of the fixing seats. The fixing ring, the rotating ring, the jacking column, the fixing ring, the inserting column, the wedge-shaped block, the connecting plate and the first spring are arranged, the situation that the wedge-shaped block extrudes and damages the base plate due to excessive rotation of the jacking column can be avoided, the
contact angle and pressure between the wedge-shaped block and the side wall of the base plate are automatically adjusted, and it is ensured that the base plates of different shapes can be firmly clamped; deviation or uneven
tin brushing caused by the
irregular shape of the substrate is avoided, and the method can be suitable for positioning of the special-shaped substrate.