Vacuum inflating sealing and cutting device for modified food packaging machine for boxed foods

The utility model relates to a vacuum inflating sealing and cutting device for a box food modified atmosphere fresh-keeping packaging machine. The utility model comprises an upper die press head equipped with a heat sealing head and a cutter knife, an upper mould pressing plate, an air exchange module and a bottom plate of the lower mould, a cavity of the air exchange module, a positioning seat of the packaging box in the cavity, and an annular groove at the upper part of the cavity cavity. There are inlet holes and suction holes; there is an adjusting gasket between the ventilation module and the bottom plate of the lower mold; the upper mold pressing plate and the adjusting gasket are provided with holes corresponding to the mold cavity, and the upper mold pressing head corresponds to the mold cavity; A demolding plate corresponding to the cavity is provided on the bottom plate of the lower mold. The utility model has the advantages that the gas replacement in the packing box is sufficient, and an adjusting gasket disposed between the air exchange module and the bottom plate of the lower mold can make the same ventilation module applicable to various different depth packing boxes; The multi-mode structure in the cavity greatly enhances the work efficiency; the set-up release pallet can easily remove the processed packaging box.