The future development direction of folding hydraulic press-servo hydraulic press

Although the traditional hydraulic machine system adopts the energy-saving solution of constant power variable pump, when the machine tool is in the state of fast down, pressure maintaining, and robot loading and unloading, the three-phase asynchronous motor will still drive the oil pump, and the output oil will pass through the hydraulic pressure at this time. The system overflows back to the fuel tank, which greatly wastes energy. At the same time, circulating overflow can easily cause the oil temperature to rise. The pump-controlled electro-hydraulic servo technology uses the high-speed response of the servo motor to realize the real-time fuel supply, and can also realize the different pressure and flow required in each process. By real-time detection of the pressure and flow signals from the hydraulic control system, adjust each The speed of the servo motor required for the operation of the working condition maximizes the flow and pressure output by the pump to meet the needs of the system, while in the non-operation state, the servo motor is operated at a low speed. In general, the energy-saving effect can reach 20%-70% compared with that before the transformation, and the noise and oil temperature are also significantly reduced. At the same time, because the servo drive is used, the intelligent transformation and upgrading of the hydraulic machine can be easily carried out. It is certain that the servo-ization of hydraulic presses is the future development direction. The energy-saving transformation of hydraulic presses can also achieve huge efficiency. I believe that this kind of pump-controlled electro-hydraulic servo system with higher cost performance will be recognized by more customers. Promote the transformation of the entire industry.