Automatic feeding device of conveying line

The utility model relates to the technical field of conveying line feeding, in particular to a conveying line automatic feeding device which comprises a conveying frame and a feeding box, a feeding assembly used for feeding and conveying liquid crystal boards is arranged in the conveying frame and the feeding box, and the feeding assembly comprises a plurality of hole grooves formed in the two sides of the inner wall of the conveying frame. A plurality of hole grooves are formed in the feeding box, a plurality of air cylinders and correcting frames are arranged in the hole grooves, positioning grooves and rubber pads are arranged in the correcting frames, a motor is arranged outside the feeding box, rolling wheels are arranged at the output end of the motor, a guide rail and a lifting plate are arranged in the feeding box, and a material frame is arranged at the top of the guide rail. According to the feeding device, the liquid crystal boards are automatically and sequentially fed, the positions of the liquid