Folding conveyor

The invention provides a folding conveyor which comprises a machine cabinet, moving wheels, a main conveying line, supporting rods, a collecting box and a self-locking device are installed on the machine cabinet, a rotating shaft is installed at one end of the main conveying line, the rotating shaft is connected with a folding frame through a bearing, the folding frame is provided with a folding conveying line, and the bottom end of each supporting rod is in shaft connection with a nitrogen spring. The telescopic end of the nitrogen spring is in shaft connection with the bottom wall of the folding frame, so that the nitrogen spring can support the folding frame, at the moment, one end of the folding conveying line is spliced with the main conveying line so as to convey materials or material trays to the main conveying line, and the collecting box is located at the other end of the main conveying line; the self-locking device is located on the side wall of the machine cabinet, and when the folding frame is dow