Automatic feeding device for shearing machine

An automatic feeding device for a shearing machine comprises at least one pair of pushing clamping jaws and a calibration mechanism. The pushing clamping jaw is arranged corresponding to the X-axis direction and used for clamping and fixing the rear end of a to-be-sheared raw material plate. The pushing clamping jaws are arranged on the sliding frame at intervals in the Y-axis direction, and the sliding frame conducts linear reciprocating displacement corresponding to the shearing area in the X-axis direction. The calibration mechanism comprises at least two pushing air cylinders and a plurality of abutting parts, and the pushing air cylinders and the abutting parts are arranged on the two opposite sides in the Y-axis direction of the feeding area at intervals in the X-axis direction. During shearing, a raw material plate is clamped and fixed through the pushing clamping jaw, the pushing distance of the raw material plate can be accurately controlled during shearing each time, and the pushing clamping jaw can