What should we do if the temperature rise of the injection molding machine is too high? Today's Liansheng Horizontal injection molding machine The manufacturer makes a detailed analysis with you:

1、 Reasons for high temperature rise of injection molding machine:

1. The oil tank volume is too small, the heat dissipation area is not enough, and the cooling device capacity is too small.

2. Fix the pump oil supply system, and select the oil pump capacity according to the fast forward speed. During operation, most of the excess flow will overflow from the relief valve and be heated under high pressure.

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

4. The system pipeline is too thin, too long, and excessively bent, resulting in large local pressure loss and pressure loss along the way.

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

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

7. The working pressure adjustment of the hydraulic system is far higher than the actual demand. Sometimes the leakage increases due to the tight seal or damaged seal, and the pressure must be increased before work.

8. The high temperature of the climate and working environment causes the oil temperature to rise.

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

2、 Treatment method for excessive temperature rise of injection molding machine:

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 oil viscosity. If conditions permit, try to use lower viscosity to reduce viscosity friction loss.

3. Improve the lubrication condition of moving parts, reduce friction loss, and help reduce working load and heat.

4. Improvement injection molding machine The assembly quality and precision of hydraulic components and hydraulic system, strictly control the fit clearance and improve the lubrication conditions. Use sealing materials with small friction coefficient, improve the sealing structure, reduce the starting force of hydraulic cylinder as far as possible, and reduce the heat generated by mechanical friction loss.