Quantitative bagging machine

The utility model relates to the technical field of agricultural product packaging, in particular to a quantitative bagging machine. Comprising a base and an automatic device, the automatic device comprises a sliding base, a material frame, an electronic scale, a material box, a guide-in frame, a moving assembly and a tensioning assembly, during use, a large packaging bag is placed in the material box, then the tensioning assembly opens and tensions a bag opening of the large packaging bag so that an external small packaging bag product can fall into the large packaging bag, when the electronic scale weighs to reach a set value, external feeding is stopped, and the large packaging bag is conveyed to the base. And meanwhile, the driving assembly acts to drive the sliding seat to move, so that the material box and the large-packaging-bag packaged products automatically move and are far away from the guide-in frame, then the products are taken down through an external cooperation material taking robot, circulati