Bending Machine Control Valve Group

The bending machine control valve group is an important part of the hydraulic system of the CNC bending machine. It is responsible for controlling the flow direction, flow rate and pressure of the hydraulic oil to achieve control of various parts of the bending machine (such as molds, slides, hydraulic cylinders, etc.). It ensures that the bending machine can accurately perform different process steps according to the set parameters through the cooperation of components such as solenoid valves, pressure control valves, and flow control valves, thereby achieving high-precision bending processing.

Main Functions and Effects
Direction control: Control the direction of hydraulic oil flow, switch the advance and retreat of the hydraulic cylinder, and then control the upper and lower mold movements of the bending machine to achieve various bending actions.
Pressure regulation: The pressure regulating valve in the bending machine control valve group can ensure that the oil pressure in the hydraulic system is maintained within a suitable range, thereby ensuring that the bending machine can provide sufficient bending force and ensure processing accuracy.
Flow control: The flow control valve is used to adjust the flow rate of the hydraulic oil, affect the movement speed and efficiency of the bending machine, and ensure that processing can be performed at a suitable speed in different working stages.
Accurate synchronization: Through the synchronization valve group, the synchronous movement of the upper and lower molds is ensured to avoid processing errors caused by uneven movement, and ensure that each bending meets the design requirements.
Safety protection: The control valve group is equipped with components such as overflow valves and safety valves to prevent system overpressure and prevent the hydraulic system and other parts of the bending machine from being damaged due to excessive pressure.
Automatic control: The control valve group of modern bending machines can be connected to the numerical control system (CNC), and automatic adjustment can be achieved through programmed control, reducing manual intervention and improving operation accuracy and production efficiency.

Main Components
Solenoid reversing valve: Controls the flow direction of hydraulic oil and determines the movement direction of the hydraulic cylinder, thereby controlling the lifting and positioning of the bending machine mold.
Pressure control valve: Used to adjust the pressure of the hydraulic system to ensure that the bending machine can provide sufficient pressure for bending, while avoiding damage to the system due to excessive pressure.
Flow control valve: By adjusting the flow of hydraulic oil, the movement speed of the bending machine is controlled to achieve control of the processing rhythm.
Overflow valve: Prevents the pressure of the hydraulic system from exceeding the safety range, automatically releases excess pressure, and protects the hydraulic system from damage.
One-way valve and check valve: prevent hydraulic oil from flowing back, ensure the correct direction of oil flow in the hydraulic system, and avoid reverse flow in the system causing failure.
Synchronous valve: ensure that the hydraulic cylinders of the bending machine at multiple points (such as upper and lower molds) work synchronously to avoid processing errors caused by uneven pressure.
Safety valve: automatically opens when the pressure is abnormal, releases excessive pressure, and prevents damage to the hydraulic system and its components.
Regulating valve: used to fine-tune the oil flow or oil pressure to meet the requirements of different bending processes for the hydraulic system.

Application Scenarios
Press brake control valve groups are widely used in CNC bending machines, hydraulic bending machines, mechanical bending machines and other equipment. They are mainly used for bending processing of various metal sheets, especially in occasions requiring high precision and large bending force, such as:
Sheet metal processing: such as bending and forming of metal sheets.
Automobile manufacturing: bending of metal sheets such as body structures, chassis, and doors.
Engineering machinery manufacturing: bending of metal parts such as engineering machinery components and equipment frames.
Aerospace: bending of high-precision and high-strength metal sheets.
Shipbuilding: Bending processing of hulls and other large metal structures.

Performance Advantages
High-precision control: The control valve group of the bending machine can accurately control the hydraulic flow and pressure, ensure the accuracy of each bending, and effectively avoid errors.
High stability: The use of high-quality valve group components has strong wear resistance and pressure resistance to ensure long-term stable operation of the equipment.
Improve work efficiency: Through the regulation of flow and pressure, the energy loss of the hydraulic system is reduced, the overall work efficiency of the equipment is improved, and energy is saved.
Strong safety: Built-in overflow valves, safety valves and other protective devices prevent overpressure in the hydraulic system and ensure the safety of equipment and operators.
Automation and intelligence: Support linkage with CNC system (CNC) or PLC control system, with high automation and intelligent control, reduce manual intervention, and improve production efficiency and operation accuracy.
Good compatibility: It can be compatible with various types of bending machines and hydraulic systems, and adapt to different working environments and process requirements.

Maintenance and Maintenance
The maintenance of the bending machine control valve group is essential for the long-term stable operation of the equipment. Common maintenance measures include:
Regularly check the hydraulic oil: ensure that the hydraulic oil is clean and of good quality, and replace the oil regularly to prevent impurities from affecting the control of the valve group.
Check the sealing of the valve group: regularly check the status of each valve and seal to prevent oil or air leakage and ensure the performance of the valve group.
Cleaning and lubrication: keep the inside of the valve group clean, regularly add lubricating oil to the valve group to avoid wear of the valve core and components.
Check the pressure and flow settings: regularly calibrate the settings of the pressure control valve and flow control valve to ensure that their working range and accuracy meet the process requirements.
Replace worn parts: regularly check the internal components of the valve group, and replace worn or aged parts in time to avoid affecting the normal operation of the hydraulic system.