HOT LINE: +86-510-80628100A hydraulic press generally consists of three parts: the main body (host), the operating system, and the pump station. The pump station serves as the power source, supplying high-pressure working fluid to the various actuators and control mechanisms of the hydraulic press; The operating system belongs to the control mechanism, which controls the flow of working fluid to enable each executing mechanism to complete the required actions according to the process requirements; The body is the actuator of the hydraulic press. The transmission system, as the power transmission and driving part of the hydraulic press, determines the laws, stability, and accuracy of the slider operation. Achieving an efficient and precise transmission mechanism is the key to designing a hydraulic press.
The transmission system of the new type of hydraulic press without oil pump AC servo direct drive, through the innovative design of the hydraulic press transmission mechanism and its hydraulic system, enables the adjustable position and speed of the hydraulic press slider, and achieves extremely high idle speed, which can meet the needs of various processes and achieve full closed-loop servo control of slider displacement and loading pressure.
The oil-free AC servo direct drive new hydraulic press transmission system applies the flywheel transmission theory of the screw press. The large pulley is supported on the bearing through a support sleeve to become an inertia wheel, realizing high-speed downward movement of the ball screw, maximizing the use of inertia force, and saving energy and consumption; Abandoning the traditional hydraulic oil pump used in hydraulic press transmission systems, a combination of flywheel and electric motor is adopted to provide energy. The AC servo motor is used to directly drive the screw nut motion pair, converting rotational motion into linear motion, compressing the hydraulic oil to generate pressure for the piston. During operation, hydraulic pressure is used, and a rigid rod is used instead of the traditional return cylinder during return. The rapid downward and backward movement of the hydraulic press slider is achieved by directly driving the ball screw with an AC servo motor. The slider has high idle downward and upward speeds, achieving high efficiency and energy saving in the hydraulic press transmission system.
The new hydraulic press transmission system applies the principle of hydraulic booster cylinder, which connects two pistons with unequal areas together. The pressure ratio is proportional to the area ratio, and the speed ratio is inversely proportional to the area ratio. It cleverly achieves high speed under no-load and low speed under load to increase force and suppress pressure; Adopting a four in one design of hydraulic pipeline, valve, cylinder, and slider, the hydraulic valve, oil tank, and pipeline are tightly connected, solving the contradiction between high-speed and large flow of hydraulic press and large diameter pipelines. The main cylinder body is integrated with the slider, and the large and small filling valves are immersed in the oil tank. When quickly descending and ascending, they quickly respond to filling and discharging, improving the responsiveness of the hydraulic system and effectively reducing the mass of the slider system.
