Watermelon grading packer

The invention discloses a watermelon grading packer. The watermelon grading packer comprises a conveying belt, an inclining closed cylinder is connected to the discharging end of the conveying belt, grading pipes are arranged below the cylinder and are thickened gradually from top to bottom, an annular projecting strip is arranged at an orifice of each grading pipe, and the tail end of each grading pipe inclines downwardly to form an outlet. The watermelon grading packer has the advantages that watermelons are placed on the conveying belt in batches, are conveyed onto the cylinder by the conveying belt and enter the cylinder via an inlet, and during rolling, since the grading pipes are arranged below the cylinder and are thickened gradually from top to bottom, the watermelons different in size fall into the different grading pipes; since the annular projecting strips arranged at the orifices of the grading pipes can facilitate bag sleeving, the watermelons different in size can be packed into the different grading pipes, and automatic separation and packing are achieved; moreover, the tail ends of the grading pipes incline downwardly to form the outlets.