How to choose the working pressure of hydraulic system of injection molding machine reasonably?
Whether the pressure application of the hydraulic system in the injection molding machine is reasonable or not is also a part of the maintenance of the injection molding machine.The working pressure of the hydraulic drive system of the injection molding machine has been adjusted when the factory goes out for trial run.At present, the rated working pressure of hydraulic system of domestic injection molding machine is 65MPa or 140MPa.The whole hydraulic system of the control valve and cylinder working intensity, and according to the pressure form a complete set of design, so, after the injection molding machine to plastic products factory, when commissioning acceptance and normal production, the pressure relief valve in the hydraulic transmission system can adjust at will.Just verify that the pressure in the manual is consistent with the actual pressure gauge in the hydraulic system before use.The operating pressure of oil cylinder in different working parts is different, the operator cannot think that the higher the working pressure, the more reliable the work.High hydraulic pressure is not only a waste of energy, for some products will have side effects, such as products are prone to flash, and the internal stress of demoulding difficulty and generate large, easy to deformation, etc.In case of special circumstances, the pressure should be adjusted according to the minimum pressure to meet the process requirements, not too high.