Full-automatic material filling machine

The invention provides a full-automatic material filling machine which comprises a horizontal sliding table, a lifting sliding table, a bag supply mechanism, a plurality of movable filling mechanisms, an opening expanding device, a plurality of fixed filling mechanisms and a controller, and the horizontal sliding table and the lifting sliding table work in a combined mode so that the opening expanding device can move to the position under the movable filling mechanisms; the bag supply mechanism can provide rolled bags with two open ends; the opening expanding device can enable the roll bag to become a material bag with one end sealed, and the free end of the material bag is expanded and arranged on the movable filling mechanism in a sleeving mode. The movable filling mechanism can clamp or loosen the material bag; the fixed filling mechanism can enable the material bag to move to the fixed filling opening, the material bag is filled with materials with the preset weight, and after being filled, the materials