Pneumatic circuit diagram for a printing press for minting coins?
Hello,
I have been given a task which is as follows:
A printing press for minting coins is operated manually. Now the press is to be automated using compressed air.
How the press works:
The coin is placed on a carriage. This carriage is mounted on guides and pushed into the press by hand. The coin is then minted. The minting is also done by hand. After minting, the carriage is pulled out of the press, and the coin can be removed.
New conditions:
– the slide should be extended and retracted with a double-acting cylinder
– the press is moved via 2 double-acting cylinders
– the circuit should have an emergency stop function
– Start circuit only via two buttons
– Noise reduced
– Maintenance unit
– only pneumatic solution
I have already tried to solve this problem, but my eye tells me that it cannot work this way.
Can someone help me with a revised sketch?
I hope my drawing is understandable and not too chaotic.
Kind regards
You have limit switches to release the air for return. However, as soon as the piston moves back, the air is switched off spring-loaded again and the piston remains stationary. You can’t reach the end positions anymore. BG1 also does not switch, since the trigger buttons still hold the pressure on the valve QM2.
In addition, the carriage would thus travel back directly with the embossing stamp which is just lifting. It’ll scratch your coins.
All Q valves should also be only 2/2 way valves.
This is the beginning of misery. 😉