Automatic blanking device for harvester blades

The utility model discloses a harvester blade automatic blanking device which comprises an inclined plate, a head transition plate, two height-adjustable first telescopic supporting columns and two height-adjustable second telescopic supporting columns. The four corners of the inclined plate are rotationally arranged at the upper ends of the two first telescopic supporting columns and the upper ends of the two second telescopic supporting columns through rotating connecting parts correspondingly, the head transition plate is in an arc shape, the two sides of the head transition plate are fixed to the two first telescopic supporting columns through connecting plates correspondingly, and the lower end of the inclined plate is located on the upper portion of the box body. A cylinder body of the telescopic support column I and a cylinder body of the telescopic support column II which are positioned on the same side of the inclined plate are connected through an adjustable telescopic rod; the automatic blanking de