Precautions for operation of injection molding machine

　　Forming good operation habits of injection molding machine is good for improving machine life and production safety.

　　Before starting up: (1) check whether there is water and oil in the electrical control box. If the electrical appliance is damp, do not start up. The maintenance personnel shall blow dry the electrical parts before starting the machine. (2) Check whether the power supply voltage is in accordance with the requirements, generally not more than ± 15%. (3) Check whether the emergency stop switch and front and rear safety door switch are normal. Verify the rotation direction of motor and oil pump is consistent. (4) Check whether the cooling pipes are smooth, and put cooling water into the cooling water jacket at the end of oil cooler and barrel. (5) Check whether there is lubricating oil (grease) in each moving part, and add enough lubricating oil. (6) Turn on the electric heating 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 make the temperature of the machine tend to be stable. The heat preservation 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, some raw materials are best dried first. (8) It is necessary to cover the heat shield on the cylinder, so as to save electric energy and prolong the life of the electric heating coil and the contactor.

　　During operation: (1) do not cancel the function of safety door at will for convenience. (2) Pay attention to observe the temperature of pressure oil, and the oil temperature shall not exceed the specified range. The ideal working temperature of hydraulic oil should be kept between 45 ~ 50 ℃, which is generally suitable in the range of 35 ~ 60 ℃. (3) Pay attention to adjust the limit switches of each stroke to avoid the impact of the machine during operation.

　　At the end of the work: (1) before the shutdown, the plastic in the barrel shall be cleaned to prevent the residual material from oxidation or long-term thermal decomposition. (2) The mold shall be opened so that the toggle mechanism is locked for a long time. (3) The workshop must be equipped with lifting equipment. When assembling and disassembling heavy parts such as moulds, great care shall be taken to ensure production safety.