Automatic feeding device for machining

The automatic feeding device for machining comprises a bottom plate, a plate conveying frame is fixed to one side of the top end of the bottom plate, a plurality of sets of first long shafts at equal intervals are rotationally installed in the plate conveying frame, and lower conveying rollers are fixed to the surfaces of the first long shafts; i-shaped sliding frames are installed on the outer walls of the two sides of the plate conveying frame in a sliding mode, second long shafts with the same number as the first long shafts are rotatably installed between the two I-shaped sliding frames, upper conveying rollers are fixed to the surfaces of the second long shafts, and air cylinders are installed on the outer walls of the two sides of the plate conveying frame; the bottom end of a piston rod of the air cylinder is fixedly connected with the outer wall of the I-shaped sliding frame. According to the plate feeding device, manual feeding of plate workpieces by workers is not needed, the working intensity of th