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How does the hydraulic pressure of an injection molding machine work?
Hydraulic transmission:
It uses hydraulic oil as the working medium. The mechanical energy of the prime mover is converted into the pressure energy of the hydraulic oil through the power element (oil pump), and then the pressure energy is converted into mechanical energy through the control element and then the actuator (cylinder or oil motor). The drive load realizes linear or rotary motion, and through the remote control of the control element and the adjustment of the flow rate, the force and speed of the actuator are adjusted.
When the external environment disturbs the above-mentioned system, the output of the actuator will generally deviate from the original setting value, resulting in a certain error. Hydraulic control: Like hydraulic transmission, the system also includes power components, control components, and actuators. The oil transfers power.
The difference between the two is that the hydraulic control has a feedback device. The function of the feedback device is to feed back the output (mechanical quantities such as displacement, speed, force, etc.) of the actuator and the input (which can be variable or constant). Compare, use the compared deviation to control the system so that the output of the actuator changes or remains constant with the change of the input. It is a hydraulic transmission system that constitutes a closed loop circuit, also called hydraulic servo system or hydraulic servo system.
The hydraulic transmission system uses on-off or logic control elements. For its control purpose, it is to maintain the stability of the set value or simply change the direction. It is also called the fixed value and sequence control element.
Servo control components are used in the hydraulic control system, which has a feedback structure and is controlled by electrical devices. It has high control accuracy and response speed, and the controlled pressure and flow often change continuously. The output power can be amplified.
Proportional control is a kind of control between the above two. The proportional control valve used is a new type of electro-hydraulic control element developed on the basis of on-off control elements and servo control elements. Some of the characteristics of the two types of components can not meet the requirements for manual on-off control, but it does not require the servo valve to have strict pollution control requirements for the hydraulic system.
www.highsun-machinery.com
It uses hydraulic oil as the working medium. The mechanical energy of the prime mover is converted into the pressure energy of the hydraulic oil through the power element (oil pump), and then the pressure energy is converted into mechanical energy through the control element and then the actuator (cylinder or oil motor). The drive load realizes linear or rotary motion, and through the remote control of the control element and the adjustment of the flow rate, the force and speed of the actuator are adjusted.
When the external environment disturbs the above-mentioned system, the output of the actuator will generally deviate from the original setting value, resulting in a certain error. Hydraulic control: Like hydraulic transmission, the system also includes power components, control components, and actuators. The oil transfers power.
The difference between the two is that the hydraulic control has a feedback device. The function of the feedback device is to feed back the output (mechanical quantities such as displacement, speed, force, etc.) of the actuator and the input (which can be variable or constant). Compare, use the compared deviation to control the system so that the output of the actuator changes or remains constant with the change of the input. It is a hydraulic transmission system that constitutes a closed loop circuit, also called hydraulic servo system or hydraulic servo system.
The hydraulic transmission system uses on-off or logic control elements. For its control purpose, it is to maintain the stability of the set value or simply change the direction. It is also called the fixed value and sequence control element.
Servo control components are used in the hydraulic control system, which has a feedback structure and is controlled by electrical devices. It has high control accuracy and response speed, and the controlled pressure and flow often change continuously. The output power can be amplified.
Proportional control is a kind of control between the above two. The proportional control valve used is a new type of electro-hydraulic control element developed on the basis of on-off control elements and servo control elements. Some of the characteristics of the two types of components can not meet the requirements for manual on-off control, but it does not require the servo valve to have strict pollution control requirements for the hydraulic system.
www.highsun-machinery.com
