Large Pneumatic Cylinder with two input pressure

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Some manufacturing processes require use of large pneumatic cylinders. If the operation cycle of these cylinders are long, such as bonding of laminated materials, use of a single high pressure line is acceptable. However if the operation cycle is short, like an assemble operation, the use of a single air pressure for forward and retract stroke is not acceptable. This is because the air cylinder consumes ALMOST the same amount of pressurized air in retract stroke as the forward stroke. However the power need is confined to forward stroke, and the retract operation does not require significant power at all. To conserve the valuable pressurized air resources, it is advisable to use lower pressure air for retract operation as shown in this animation. Notice that to achieve this a high pressure air coming from pressure tank is divided into two line one of which is fed to the rod end of the air cylinder after passing through a pressure reducer. Also the connection of air lines to a five port four way valve arranged so that it allows two pressure line connection to one air cylinder as shown.

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[stuffstuffa]

does it use up air when it is just staying in one position, but something else is pushing against it? For example, if it was holding something closed for a period of time.

[mekanizmalar]

If there is no leakage in the system, there is no air consumption when the piston staying in one position.

[Swedish Holmberg]

Does my Pneumatic Mortiser machine have to use a compressor or can pneumatics be run just from electric power? Ive never seen a compressor around these machines when used....

[mekanizmalar]

I do not know anything about Pneumatic Mortiser Machines. If there is no compressor or air tank around it, why they call it pneumatic? I looked a video of pneumatic mortiser machine but I could not see any compressor either.

[Gianfranco Fronzi]

THIS IS YOUR STANDARD SYSTEM, I DON'T SEE THE COST SAVINGS. NICE SIMULATION THOUGH. IF THE EXHAUST AIR COULD BE REUSED IT WOULD BE SOMETHING, BUT THE COST OF PUSHING IT WOULD OUTWEIGH IT'S COLLECTION.

GIANFRANCO FRONZI. DEC./ 10 / 11

[mekanizmalar]

By using principle described in this video up to %20 air can be saved for each operation cycle. By using the formula P*V = m*R*T of compressible gases this can be easily proven.

[stuffstuffa]

thank you

[sezgin tuylu]

guzel bakmak sev

[richard ortiz]

can you make a model that shows a tank filled with hydraulic fluid +100 psi pushing againist

- 200psi will the returning pressure be 200 psi let me know at richard@hpgsystemcom

[Anil Chauhan]

very very informative