Just a quick update. I changed around the configuration a bit so it was not so big and re routed the hoses and pneumatic switches lower on the base. So it does not look so big.
One of the first automated versions...you can still see the old mounted manual hand joystick in back but it is not connected. I think this was just before I decided the cylinder could easily handle 2 or more hand pumps.
The last version with the two hand pumps...
Below it is liitle more compact looking. I put some tabs or extensions on the tube so they could trigger the pneumatic switches lower on the body so i could cut off the top half off. The unit still extends up higher but when collapsed it won't look so big. I relocated the guage as the bubble on the liquid filled guage made it hard to read at 3500 to 4500 psi But currently it looks like this...
The smaller black air lines are the control lines, while the bigger blue lines force the piston up and down.
I had to put some spacers on top of the pumps but below the metal plate as I found out that that is where the air intake is for the pumps. there are a couple holes up on the plate but too off center. If i had known that they were air intake holes I would have drilled and tapped them so i could pressurize them with compressed air. Originally the smaller regulator was going to feed the first chamber with low pressure air. I may still do that. That way the number of pumps to achieve 4500 psi would be less. But right now I think the next step is to get a thicker bar to push down on the hand pumps as the 1/4" bar is deflecting more than I want. afterwards I can drill and tap air intakes for the top plate and see if the first chamber will hold air pressure.
Trying to change over to magnetic piston sensing and control , that way as the pressure increases I can hold the downward stroke for a split second longer before changing direction, but I'm a little slow moving with work crap and all. And the learning curve with this stuff... well, Im just a bit slow.
Allen
One of the first automated versions...you can still see the old mounted manual hand joystick in back but it is not connected. I think this was just before I decided the cylinder could easily handle 2 or more hand pumps.
The last version with the two hand pumps...
Below it is liitle more compact looking. I put some tabs or extensions on the tube so they could trigger the pneumatic switches lower on the body so i could cut off the top half off. The unit still extends up higher but when collapsed it won't look so big. I relocated the guage as the bubble on the liquid filled guage made it hard to read at 3500 to 4500 psi But currently it looks like this...
The smaller black air lines are the control lines, while the bigger blue lines force the piston up and down.
I had to put some spacers on top of the pumps but below the metal plate as I found out that that is where the air intake is for the pumps. there are a couple holes up on the plate but too off center. If i had known that they were air intake holes I would have drilled and tapped them so i could pressurize them with compressed air. Originally the smaller regulator was going to feed the first chamber with low pressure air. I may still do that. That way the number of pumps to achieve 4500 psi would be less. But right now I think the next step is to get a thicker bar to push down on the hand pumps as the 1/4" bar is deflecting more than I want. afterwards I can drill and tap air intakes for the top plate and see if the first chamber will hold air pressure.
Trying to change over to magnetic piston sensing and control , that way as the pressure increases I can hold the downward stroke for a split second longer before changing direction, but I'm a little slow moving with work crap and all. And the learning curve with this stuff... well, Im just a bit slow.
Allen
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