In this issue, the editor will tell you about some preparations before starting the machine and before injection molding, to better understand, use and maintain the injection molding machine, and develop good injection molding operation habits, which are of great benefit to improving the lives of the injection molding machine and production safety.
Before the injection molding machine is started, a preliminary inspection of the injection molding machine should be carried out to check whether various safety devices are effective, and whether each travel switch is normal, check the amount of lubricating oil, and lubricate the injection molding machine.
The work that must be done before starting the injection molding machine
① Check whether there is water or oil in the electrical control box. If the electrical components are damp, do not start the machine. The electrical components should be blown dry by maintenance personnel before starting the machine.
② Check whether the power supply voltage meets the requirements, generally it should not exceed 15%.
③ Check whether the emergency stop switch and the front and rear safety door switches are normal. Verify that the directions of rotation of the motor and the oil pump are the same. Check for loose electrical connectors.
④ Check whether the cooling pipes are unobstructed, and pass the cooling water to the oil cooler and the cooling water jacket at the end of the barrel.
⑤ Check whether there is lubricating oil (grease) in each movable part, and add enough lubricating oil.
⑥ Turn on the electric heating switch to heat each section of the barrel. When the temperature of each section reaches the requirements, keep it for some time to stabilize the temperature of the injection molding machine. The holding time varies according to the requirements of different equipment and plastic raw materials.
⑦ Add enough plastic into the hopper. According to the requirements of different plastics for injection molding, some raw materials need to be dried first.
⑧ The heat shield on the barrel should be covered, which can not only save electricity but also prolong the life of the electric heating ring and the current contactor.