Gas-liquid damping cylinder shifting circuit introduction

Gas-liquid damping cylinder shifting circuit
Figure 1 shows the gas-liquid damper cylinder shifting circuit with a stroke valve. When the piston rod moves to the right quickly, when the collision block presses the motorized stroke valve, the oil in the right chamber of the hydraulic cylinder can only pass through the throttle valve to achieve slow motion. The position of the stroke valve can be adjusted as needed. The high fuel tank serves to supplement the leakage of oil.

Gas-liquid damping cylinder shifting circuit

Figure 1 gas-liquid damping cylinder shifting circuit
Figure 2 Gas-liquid damper cylinder shifting circuit In the machining process, it often meets the requirements of fast-feeding, slow-feeding and retracting knives. This can be achieved with pneumatic actuators, using a gas-liquid damper cylinder with a structural shift, as shown in Figure 2-a, but the shift position of this method cannot be changed and is not recommended.

Gas-liquid damping cylinder shifting circuit

Figure 2 gas-liquid damping cylinder shifting circuit
Figure 2-b shows the machine-controlled valve shifting circuit. When the cylinder is extended and the bumper on the piston rod hits the machine-controlled valve, the machine-controlled valve reverses and the cylinder starts to advance slowly. The position at which the shifting is started is changed by changing the mounting position of the machine control valve.
This variable speed loop principle can be used for variable speed control of common cylinders and other types of cylinders. In particular, it is commonly used with a switch cylinder, so that the magnetic switch is used to realize the stroke of the cylinder position, and the commutation of the two-position two-way solenoid valve is controlled to change the speed of the cylinder movement. Similarly, speed control valves are available in a variety of ways, so the shifting circuit is also diverse.