Forming equipment for producing HPVC double-wall corrugated pipe and forming method thereof

The invention relates to the technical field of corrugated pipe production equipment, in particular to forming equipment for HPVC double-wall corrugated pipe production and a forming method of the forming equipment. Comprising an extruder, a controller and a boarding machine, two groups of shaping molds are arranged on the shaping machine; the shaping mold is composed of a first mold, a second mold and a third mold. The first mold, the second mold and the third mold are spliced in sequence, and the first mold, the second mold and the third mold are connected through a connecting mechanism; the first mold, the second mold and the third mold form a shaping mold through the connecting mechanism, the first mold or the second mold is detached when annular structures are extruded on the outer walls of the HPVC double-wall corrugated pipes of different specifications, the shaping mold can correspond to the outer walls of the HPVC double-wall corrugated pipes, and therefore one set of mold corresponds to the HPVC dou