The utility model relates to the field of blow molding molds, in particular to a sealing device, comprising a sealing plate, a front mold and a rear mold. The sealing plate is arranged at the upper ends of the front mold and the rear mold, the front mold and the rear mold are in contact with each other, and iron pin air blowing holes are arranged on the upper surface of the sealing plate. An iron pin is built in the sealing plate, and the interior of the sealing plate is of a hollow structure. The utility model improves the structure of the sealing plate, solves the defect that the existing two-step blow molding mold cannot effectively produce products whose plastic blow molding preform mouth is easily deformed, and also solves the defect that the same blow molding machine needs to replace different cylinders for wide-mouth products with different blow molding pressure requirements.
Country Code: CN
Application Number: CN201320283196.0
