Plastic vacuum forming machine convenient for die replacement

The plastic vacuum forming machine comprises a workbench, a first clamping seat with the bottom fixedly connected with a second clamping seat is fixedly connected to the right end of the bottom of theworkbench, and a second electric telescopic rod is fixedly connected to the middle end of the bottom of an inner cavity of the second clamping seat; sliding bases with the surfaces in sliding connection with sliders are symmetrically arranged on the front side and the rear side of the left end of the top of the workbench, first electric telescopic rods with the tail ends fixedly connected with push plates are fixedly connected to the right sides of the sliders through first supporting plates, and a plurality of conveying rollers distributed at equal intervals are movably mounted at the upperend of the inner surface of the workbench. The plastic suction mold is provided with the first clamping seat, the second clamping seat, the second electric telescopic rod, the sliding seat, the slider, the first supporting pla