Film blowing machine convenient to cool

The utility model provides a film blowing machine convenient to cool, which comprises a film blowing machine main body, a cooling plate is fixed on one side of the film blowing machine main body, a limiting roller is rotatably mounted in the cooling plate, and positioning frames are fixed on two sides of the upper surface of the cooling plate. And two positioning rollers are rotationally mounted on the two sides of the interiors of the two positioning frames and located over the limiting rollers. The utility model provides the water tank. According to the film blowing machine convenient to cool, after particles are blown into a film through a film blowing machine body, the film is placed in two positioning rollers, penetrates through the lower portion of a limiting roller and penetrates through four cooling rollers in a crossed mode, and when the film penetrates through the four cooling rollers in a crossed mode, water flow is poured into the four cooling rollers through water inlets; and when the water flow