Automatic space bag changing device

The utility model discloses an automatic space bag changing device in the field of material packaging. Moving vehicle, the moving vehicle comprises a bottom plate and a top plate which are parallel toeach other; a plurality of wheels are arranged at the bottom of the baseplate; a left side plate, a right side plate, a front side plate and a rear side plate are arranged between the bottom plate and the top plate. The top plate is provided with at least one supporting assembly. The supporting assembly comprises four vertical rods vertically arranged on the top plate. An inlet and an outlet arerespectively formed in the upper and lower ends of the funnel; the bottom of the funnel is fixed with the upper ends of the vertical rods; the hopper outlet is connected with an inclined discharging channel, the side face of the moving trolley is fixedly connected with a horizontal positioning plate and a horizontal supporting plate, the positioning plate is provided with a through groove allowinga space bag to penetrate t