Principle of cylinder action
The movement speed of the cylinder is mainly determined by the needs of the working mechanism. When the demand is slow and stable, it is appropriate to use a gas-liquid damping cylinder or throttling control. The method of throttling and speed regulation is: it is recommended to use the exhaust throttle valve for horizontal installation of thrust load;it is recommended to use the intake throttle valve for vertical installation of lift load;check the basic cycle of the cycle. The buffer tube can be used to avoid impact at the end of the stroke. When the cylinder is not high, the buffering effect is obvious and the speed is not high. If the speed is high, the terminal will be hit frequently.
The reason why the cylinder moves slowly
1: The air flow has decreased. It may be that the filter is clogged or the reversing valve is stuck.
Two: The cylinder piston sealing ring has expanded. If the air flow is not filtered well, or the drainage is not good, and the oil is not supplied in place, it will also cause the sealing ring to expand, thus causing the cylinder Movement slows down.
How to solve the problem of slow cylinder speed
1. Cause of failure: load change
Countermeasures: 1. Readjust the speed control valve
2. Adjust the usage pressure
2. Cause of failure: pressure reduction
Countermeasures: 1. Readjust to the supply pressure and lock it
2. If the set pressure drops slowly, pay attention to whether the filter element is blocked
3. Cause of failure: poor lubrication, resulting in increased friction
Countermeasure: Proper lubrication
4. Cause of failure: leakage at the cylinder sealing ring
Countermeasures: 1. The sealing ring is swollen and needs to be replaced. And check the purification system
2. If the cylinder tube, piston rod, etc. are damaged, replace them.
5. Cause of failure: When working at high frequency in a low-temperature environment, the condensed water on the muffler at the outlet of the reversing valve will gradually freeze (due to insulation expansion, temperature decreases), causing the rotating cylinder speed to gradually slow down.
Countermeasures: 1. Improve the dryness of compressed air
2. If possible, increase the ambient temperature and reduce the humidity of the ambient air.
Judgement and maintenance techniques for common cylinder faults:
1. Good tank:
Hold the air hole with your hand, and then pull the piston shaft with your hand. When you pull it, the cylinder has a huge reverse force. When it is released, the piston rebounds back to its original position. Pull out the push rod and insert the air hole. The cylinder also has a huge reverse force when pressed manually. The piston will rebound automatically.
2. Bad cylinder:
When pulled, there is no resistance and no small force. There is no movement or slow motion of the piston when it is released, and when it is pulled out, CylinderThere are opposing forces, but When it is continuously pulled, the cylinder will slowly descend. There is no stress or pressure during times of stress, but less stress.
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