Plastic vacuum forming machine capable of rapidly and conveniently removing dust

The utility model relates to the technical field of plastic vacuum forming machines, in particular to a plastic vacuum forming machine capable of quickly and conveniently removing dust, which comprises a dust removal box and a plastic vacuum forming box communicated with the dust removal box, the dust removal box is provided with two cavities distributed up and down, the bottom of one side of each cavity is provided with a notch, and a dust removal mechanism is mounted in each cavity. The dust removal mechanism comprises an air suction assembly, a rotating assembly, a sponge belt, a fixing strip and a plurality of spring plates, the air suction assembly is located outside the cavity, the rotating assembly is located inside the cavity, the air suction assembly and the rotating assembly are in transmission fit through the sponge belt, and a plurality of second contact blocks are fixed to the inner side face of the sponge belt. The fixing strip is fixed in the cavity, the plurality of spring plates are fixed on