The invention discloses a cooling system of a hollow blow molding machine, relating to the technical field of hollow blow molding machines, comprising an air compressor, a circulating refrigerator, a mold and a blow pin rod. A water outlet pipe of the circulating refrigerator is connected with water inlets of the mold and the blow pin rod, and a water return pipe of the circulating refrigerator is connected with water outlets of the mold and the blow pin rod. The air compressor is connected with the blow pin rod through an air pipe, and part of the air pipe is located in a liquid tank of the circulating refrigerator. According to the invention, the cooling liquid and the compressed air are cooled by the circulating refrigerator, so that the mold cools the outside of the product, and the compressed air cools the inside of the product. Through the two-way cooling of water cooling and air cooling, the cooling time is shortened and the production efficiency is improved.
Country Code: CN
Application Number: CN202410856619.6
