Everyone knows that if the injection molding machine is overheated, it will certainly cause some damage to the running injection molding machine. This will reduce the performance of the machine and shorten the life of the machine. So what caused the high temperature of the injection molding machine? What is the processing method? The following Xiao Bian talked to everyone about the reasons for the high temperature of the injection molding machine and its processing methods!

First, the cause of excessive heating of the injection molding machine

    1. The volume of the fuel tank is small, resulting in insufficient heat dissipation area of the injection molding machine and the capacity in the cooling device is too small.

    2. When the machine is operating at a high pressure, most of the flow will overflow from the overflow valve and generate heat. This may be a quantitative pump supply system that selects the pump capacity when the machine is fast-forwarding. Caused.

    3, the system unloading circuit failure or because there is no unloading circuit, and when the injection molding machine stops working, the oil pump can not be unloaded, which causes the pump's total flow in the overflow, resulting overflow It will cause fever due to loss, resulting in a warming phenomenon.

    4. The pipelines in the system are thin and long, and there are many bends, resulting in some local pressure loss and pressure loss along the machine.

    5, the fineness of the components is not enough and the quality of the assembly is poor, and the loss between the relative movement of the mechanical friction is large.

  6, the gap between the mating parts of the machine is too small, resulting in the machine after the use of the wear caused by the gap is too large, and the internal and external leakage of the machine is large, resulting in a large loss of machine capacity, as if the pump When the volumetric efficiency is reduced, the temperature rises quickly.

    7. The working pressure in the hydraulic system is adjusted much higher than actually needed. This time may be due to the tightness of the seal, it may also be the damage of the seal and the increase of the leak so that we have to increase the pressure. Only the machine with high pressure can run.

    8. The temperature of the weather and working environment is high, resulting in an increase in oil temperature.

    9. There are two cases in which the field will cause heating of the injection molding machine to heat up. That is the viscosity of the oil is not appropriate. The viscosity is large and the viscosity resistance is large. If the viscosity is too small, the leakage increases.

Second, the injection molding machine overheating treatment

     1, according to different load requirements, often check the injection molding machine and adjust the pressure of the relief valve, so that the pressure balance to appropriate.

     2, in the choice of injection molding machine hydraulic oil, we must pay special attention to the viscosity of the oil, we have to try to use a relatively low viscosity to reduce the loss of viscosity friction.

     3. The friction loss of the machine can be reduced by improving the lubrication conditions of the moving parts. This not only reduces the workload on the machine, but also reduces the heating of the machine.

     4. Strictly control and match the gaps of fittings to improve the lubrication conditions. This can improve the assembly quality and self-accuracy of hydraulic components and hydraulic systems. If we want to reduce the starting force of hydraulic cylinders, we need to reduce the mechanical friction loss. The heat generated, which we can achieve with a small friction coefficient of the sealing material and improve the sealing structure

     5, check the hydraulic oil cooling system is blocked.

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