What should I do if the temperature of the injection molding machine rises too high?

1. Reasons for excessive temperature rise of injection molding machine:

1. The oil tank capacity is too small, the heat dissipation area is insufficient, and the cooling device capacity is too small.

2. Fixed pump oil supply system, the oil pump capacity is selected according to the fast forward speed. During operation, most of the excess flow will overflow from the overflow valve and heat up under high pressure.

3. Due to the failure of the unloading circuit in the system or the unloading circuit is not set, the oil pump cannot be unloaded when it stops working. All the flow of the pump overflows under high pressure, resulting in overflow loss and heating, causing temperature rise.

4. The system pipeline is too thin, too long, and overly curved, with large local pressure loss and pressure loss along the way.

5. The precision of the components is not enough, the assembly quality is poor, and the mechanical friction loss between movements is large.

6. The clearance of the mating parts is too small, or the clearance is too large after wear, and the internal and external leakage is large, resulting in large volume loss, such as reduced pump volume efficiency and fast temperature rise.

7. The working pressure adjustment of the hydraulic system is much higher than the actual need. Sometimes leakage increases due to too tight seals or seal damage, and the pressure must be increased before work.

8. High temperature in the climate and working environment causes the oil temperature to rise.

9. Improper oil viscosity selection, high viscosity, high viscosity resistance, and too low viscosity will increase leakage, both of which will cause heating and temperature rise.

II. Treatment methods for excessive temperature rise of injection molding machines:

1. According to different load requirements, regularly check and adjust the pressure of the overflow valve to make it just right.

2. Reasonably select hydraulic oil, especially the viscosity of the oil. When conditions permit, try to use lower viscosity to reduce viscosity friction loss.

3. Improve the lubrication conditions of moving parts and reduce friction loss, which is conducive to reducing workload and heat.

4. Improve the assembly quality and accuracy of hydraulic components and hydraulic systems of injection molding machines, strictly control the matching clearance, and improve lubrication conditions. Use sealing materials with low friction coefficients, improve the sealing structure, reduce the starting force of the hydraulic cylinder as much as possible, and reduce the heat generated by mechanical friction loss.