Positioning assembly for optical detection of circuit board

The utility model discloses a positioning assembly for optical detection of a circuit board, which comprises a positioning base and a locking assembly assembled on the positioning base, a positioning groove is arranged above the positioning base, a support pad column is fixedly connected in the positioning groove, a mounting hole on the circuit board is arranged corresponding to the support pad column, and a mounting cavity is arranged at the bottom of the positioning base. The locking assembly is installed in the installation cavity in a matched mode and extends from the supporting cushion column. In the locking assembly, a push-pull plate is slidably installed in the installation cavity, a lifting rod is slidably installed in the supporting cushion column, the two ends of a connecting rod are hinged to the lifting rod and the push-pull plate respectively, and the acting assembly is installed at the top end of the lifting rod in a matched mode and fixes the circuit board. According to the utility model, the