The fully automatic water tank blow molding machine can produce water tanks ranging from 100 liters to 500 liters and 1 to 8 layers. The heating system of the large hollow blow molding machine adopts the combination of screw heating and die head heating. The screw heating can adopt traditional ceramic heating, or better electromagnetic heating and infrared heating. Compared with the traditional heater, it has less heat loss, energy saving and environmental protection, and reduces the production cost of customer equipment. The die head heating is divided into multi-zone heating, each zone is controlled separately, and the traditional heating method can also be adopted, or the more energy-saving electromagnetic heating and infrared heating can be adopted. Different large hollow blow molding machine manufacturers design different heating systems. At present, the research and development and manufacturing of our large hollow blow molding machines have gone throug…