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• Exporting Office: 12F, Huaihai Road West, Shanghai, China
• Factory: Picheng World Industrial Park, Danyang City, Jiangsu Province, China
What are the classifications of hydraulic presses?
by：WORLD
2022-11-29
The special energy-saving hydraulic station for hydraulic presses adopts the 'pump control' technology, which realizes accurate control of flow and pressure through accurate control of the torque and speed of the pump. It is mainly composed of electro-hydraulic driver, three-phase AC permanent magnet synchronous motor, high-performance special pump, pressure sensor and so on. Since the output flow of the oil pump is proportional to the speed of the motor, the pressure in the oil circuit is proportional to the output torque of the motor.
Through double closed-loop control of system pressure and flow, vector control + field weakening control + special PID control algorithm is used to complete the accurate control of the torque and speed of the pump, realize accurate supply of flow and pressure according to actual needs, and eliminate high-pressure throttling. It overcomes the problem that the oil temperature rises too fast caused by the high pressure throttling of the traditional 'valve control' system, achieves the effect of energy saving and electricity saving, and reduces the oil temperature of the system at the same time, the energy saving rate is 70%, and the average energy saving rate is 30% .
The hydraulic press adopts an AC motor to drive a two-way quantitative hydraulic pump, and uses the AC motor's good speed regulation characteristics, frequent start-stop and forward and reverse characteristics, and output characteristics of constant torque at rated speed and constant power at over-rated speed. The electric motor-hydraulic pump group realizes the arbitrary adjustment of the flow, direction and pressure of the fluid transmission without the need for flow control valve, directional control valve and pressure control valve, which simplifies the more complex throttling control system into a volume control system. When the hydraulic machine is not working , the electric motor and hydraulic pump can also be stopped.
This new type of hydraulic press has a simple hydraulic system, a small number of hydraulic valves, reduced hydraulic oil heat generation, reduced fuel tank size, improved energy utilization and transmission efficiency, and can save about 60% of energy. Through the digital control of the electric motor, the slider of the hydraulic press can provide a variety of working curves to adapt to and match various forming process requirements. The drive hydraulic press can replace most of the existing ordinary hydraulic presses.
Internal gear pumps or high-performance vane pumps are generally used to drive hydraulic oil pumps. Traditional hydraulic presses generally use axial piston pumps. Under the same flow and pressure, the noise of internal gear pumps or vane pumps is 5dB lower than that of axial piston pumps. 10dB. The motor runs at the rated speed when the hydraulic press is pressed and returned, and its emission noise is 5dB to 10dB lower than that of the traditional hydraulic press.
When the sliding block is falling rapidly and the sliding block is stationary, the motor speed is 0, so the driving hydraulic press basically has no noise emission. In the pressure holding stage, due to the low speed of the motor, the noise of the driving hydraulic press is generally less than 70dB, while the noise of the traditional hydraulic press is 83dB to 90dB. After testing and calculation, under normal working conditions, the noise generated by 10 hydraulic presses is lower than that generated by a common hydraulic press of the same specification.
It is beyond doubt that benefits automatic power press machine. Market sentiments are strong, especially in the light of growing automatic power press machine observed globally.
Hard work and performance is rewarded through bonuses and commissions. Job satisfaction is very important for employees and owners, Shanghai Yingxin World Machinery Co., Ltd. will create a work environment that is enjoyable and profitable for all.
Though the cost of these sustainability initiatives as mechanical power press can be high, harnessing the power of an ethical supply chain to appeal to conscientious consumers can be a smart move both ethically and financially.
Through double closed-loop control of system pressure and flow, vector control + field weakening control + special PID control algorithm is used to complete the accurate control of the torque and speed of the pump, realize accurate supply of flow and pressure according to actual needs, and eliminate high-pressure throttling. It overcomes the problem that the oil temperature rises too fast caused by the high pressure throttling of the traditional 'valve control' system, achieves the effect of energy saving and electricity saving, and reduces the oil temperature of the system at the same time, the energy saving rate is 70%, and the average energy saving rate is 30% .
The hydraulic press adopts an AC motor to drive a two-way quantitative hydraulic pump, and uses the AC motor's good speed regulation characteristics, frequent start-stop and forward and reverse characteristics, and output characteristics of constant torque at rated speed and constant power at over-rated speed. The electric motor-hydraulic pump group realizes the arbitrary adjustment of the flow, direction and pressure of the fluid transmission without the need for flow control valve, directional control valve and pressure control valve, which simplifies the more complex throttling control system into a volume control system. When the hydraulic machine is not working , the electric motor and hydraulic pump can also be stopped.
This new type of hydraulic press has a simple hydraulic system, a small number of hydraulic valves, reduced hydraulic oil heat generation, reduced fuel tank size, improved energy utilization and transmission efficiency, and can save about 60% of energy. Through the digital control of the electric motor, the slider of the hydraulic press can provide a variety of working curves to adapt to and match various forming process requirements. The drive hydraulic press can replace most of the existing ordinary hydraulic presses.
Internal gear pumps or high-performance vane pumps are generally used to drive hydraulic oil pumps. Traditional hydraulic presses generally use axial piston pumps. Under the same flow and pressure, the noise of internal gear pumps or vane pumps is 5dB lower than that of axial piston pumps. 10dB. The motor runs at the rated speed when the hydraulic press is pressed and returned, and its emission noise is 5dB to 10dB lower than that of the traditional hydraulic press.
When the sliding block is falling rapidly and the sliding block is stationary, the motor speed is 0, so the driving hydraulic press basically has no noise emission. In the pressure holding stage, due to the low speed of the motor, the noise of the driving hydraulic press is generally less than 70dB, while the noise of the traditional hydraulic press is 83dB to 90dB. After testing and calculation, under normal working conditions, the noise generated by 10 hydraulic presses is lower than that generated by a common hydraulic press of the same specification.
It is beyond doubt that benefits automatic power press machine. Market sentiments are strong, especially in the light of growing automatic power press machine observed globally.
Hard work and performance is rewarded through bonuses and commissions. Job satisfaction is very important for employees and owners, Shanghai Yingxin World Machinery Co., Ltd. will create a work environment that is enjoyable and profitable for all.
Though the cost of these sustainability initiatives as mechanical power press can be high, harnessing the power of an ethical supply chain to appeal to conscientious consumers can be a smart move both ethically and financially.
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