Why should there be a cooler in the hydraulic drive system of injection molding machine?
The cooler is installed in the hydraulic drive system, mainly to reduce the temperature of the hydraulic oil, so as to ensure the hydraulic drive can work normally for a long time.
Hydraulic oil for a long time at a certain speed in the pipe flow, and the pipe wall friction, coupled with the resistance of each control valve in the pipeline and oil cylinder piston action against oil is compressed, the hydraulic oil to generate heat, high oil temperature rise.
When the temperature of the hydraulic oil is too high, the nature of the oil will change.If the oil temperature is high, the viscosity of the oil should be reduced, then at this time, the pipe louie leakage occurs, the throttle valve's flow control to the oil changes, and the piston operation is unstable.The valve also can not work normally, sometimes there will be stuck, no action, resulting in the hydraulic transmission system cannot work normally.Therefore, it is necessary to add a cooler in the hydraulic drive system to ensure that the oil temperature is controlled within a certain range.