Circuit board transfer cart

The utility model relates to the field of PCBs (printed circuit boards), in particular to a circuit board transfer cart which comprises a frame, a plurality of universal wheels are uniformly fixed at the bottom of the frame, a plurality of circuit board supporting devices are further arranged on the frame, and each circuit board supporting device comprises a supporting plate arranged in the frame. A positioning plate is fixed to the tail end of the supporting plate and is perpendicular to the supporting plate, a plurality of sliding rails are fixed to the portion, below the supporting plate, of the frame, sliding blocks connected with the sliding rails in a sliding mode are arranged on the sliding rails, supporting blocks are fixed to the positions, corresponding to the sliding blocks, of the supporting plate, positioning shafts are further fixed to the sliding blocks, and the positioning shafts are connected with the sliding rails in a sliding mode. The positioning shaft penetrates through the supporting blo