Operation points of injection molding machine

14-09-2020

Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding dies to make thermoplastic or thermoset plastics into various shapes of plastic products. So what matters should be paid attention to when operating the injection molding machine? Let's take a look at the key points of injection molding machine operation.


  Matters needing attention before starting the injection molding machine


  1. Before operating the injection molding machine, check whether there is water or oil in the electrical control box. If the electrical appliance is damp, do not turn it on. Maintenance personnel should blow dry the electrical parts before starting the machine.


  2. Before the injection molding machine is operated, check whether the power supply voltage is consistent, and generally should not exceed ±6%.


  3. Check whether the emergency stop switch, front and rear safety door switches are normal. Verify that the rotation direction of the motor and the oil pump are the same. 


       4. Check whether the cooling pipelines are unblocked for a long distance, and pass cooling water into the oil cooler and the cooling water jacket at the end of the barrel.


  5. Before the injection molding machine is operated, check whether there is lubricating oil in each movable part, and add enough lubricating oil.


  6. Turn on the electric heater to heat each section of the barrel. When the temperature of each section reaches the requirements, keep it warm for a period of time to stabilize the temperature of the machine. The holding time varies according to the requirements of different equipment and plastic materials.


  7. Add enough plastic to the hopper. According to the requirements of different plastics for injection molding, some raw materials are best to be dried first.


  8. Cover the heat shield on the barrel, which can save electricity and extend the life of the electric heating coil and current contactor.

injection molding machine

  Matters needing attention during the operation of the injection molding machine


  1. Don't cancel the function of the safety door at will for convenience.


  2. Pay attention to the temperature of the pressure oil, and the oil temperature should not exceed the specified range. The ideal working temperature of hydraulic oil should be kept between 45-50℃, generally within the range of 35-60℃.


  3. Pay attention to adjust each travel switch to avoid impact when the machine moves.


  Precautions at the end of injection molding machine work


  1. After the injection molding machine is operated, the plastic in the barrel should be cleaned to prevent the remaining material from oxidizing or decomposing under long-term heat.


  2. The mold should be opened so that the toggle lever mechanism time is locked.


  3. The workshop must be equipped with lifting equipment. Be very careful when assembling and disassembling molds to ensure production safety.


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