Regarding the cylinder reversal issue of pneumatic valves
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To change a pneumatic valve from air-open to air-close, adjustments need to be made to the cylinder; here’s how to proceed.
In the case of diaphragm cylinders, the position can be changed by using the diaphragm and spring
This post was last edited by tiger2010 on 2020-9-18 at 14:49; adjusting the position of the cylinder fork or changing the location of the solenoid valve will both work
If conditions permit, changing the overall orientation of the cylinder can also achieve this
1. For cylinder actuators, whether they use fork-type mechanisms or gear-rack mechanisms, to change the direction of the pneumatic action, it is necessary to disassemble the cylinder, adjust the position of the spring in relation to the piston, and redirect the air supply to the other side of the piston. Some cylinders have this feature; they are single-acting cylinders with air inlets on both sides of the piston, with the spare side being blocked off by a plug. 2. If the valve is a ball valve, it can be set to the switching state required when the cylinder loses air, thereby achieving either air-operated opening or air-operated closing. There is no need to adjust the cylinder.
How can the direction of action of a single-acting cylinder be changed by adjusting the position of the fork?
The single-acting cylinder shown in your diagram can only be modified by replacing the shaft assembly inside the spring cylinder
Does a double-acting type also require changing the shift fork? Just change the intake and exhaust. Are double-acting types available with air-open or air-close operation? How to adjust the direction of the cylinder fork?
Double-acting, no air-on/air-off
There’s no need to move the cylinder at all for opening or closing the gas. When the valve is closed and the cylinder is installed, it means the gas is on; when the valve is open and the cylinder is installed, it means the gas is off. It’s just adjusting the valve status – what does that have to do with the cylinder?
I. For gas on/off adjustment, install the piston in the cylinder in an inverted position. II. Adjust the installation position of the solenoid valve. III. Directly remove the cylinder, change the position of the ball in the switch valve, and simultaneously adjust the position feedback device.