The hollow blow molding machine must be strictly prepared before starting
The first point: the cooling water of the cooling cylinder must be fully opened to avoid screw teeth. The second point: preheat hydraulic oil. If the temperature of the hydraulic oil in the blow molding oil tank is too low, the heater should be turned on immediately, and the heater is usually installed on the main engine. The third point: Press the start button, stop immediately, and check whether the pump is running in the correct direction. If no correspondence is found, replace the power cables of the two connected motors immediately. Fourth point: The machine should start without pressure in the hydraulic system. When opening, adjust the pressure of the relief system of each pump to a safe pressure. There are often two pressure systems in large blow molding machines, one is the clamping unit and the other is the blow molding unit, and each unit has a pressure exhaust valve. When the pump is stopped, the pressure reducing valve must be opened, and when the pump is working, the pressure reducing valve must be closed. Fifth point: adjust the position of all travel switches to make the travel switches of the movable template clear. Point 6: Close the whole door. According to safety protection requirements, all safety doors should be closed when the machine is working. For large hollow blow molding machines, when the safety door is opened, the clamping movement will stop: if another safety door is opened, the oil pump will stop. Seventh point: Turn on the heating and temperature control system. Eighth point: mold. When installing the mold, it is necessary to clean the mold surface and the contact surface with the hollow blow molding machine template.
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