PCB welding device for optical module

The invention discloses a PCB welding device for an optical module, and belongs to the technical field of PCB machining, the PCB welding device comprises a bearing table, a welding structure is mounted on the bearing table, a fixed disc is fixedly connected to the bearing table, a rotating disc is rotatably connected to the fixed disc, a driving structure is mounted in the bearing table, and a driving mechanism is mounted in the driving structure. A plurality of positioning structures are mounted on the rotating disc; a plurality of expansion bags are integrally formed on the inner wall of the fixed bearing box, a flow dividing box is installed outside the fixed bearing box, the outer portion of the flow dividing box is communicated with an air inlet valve, the outer portion of the flow dividing box is communicated with a first flow dividing valve, and after the fixed bearing box expands, the interior of the fixed bearing box can extend out of the expansion bags to bear a PCB. In the continuous gas injection