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Question:

pneumatics and automatic doors?

how do automatic doors use pneumatics to work? i need help with a project and any help would be appreciated. thanks.

Answer:

They could use pneumatics but mostly they use small motors to move them. If you want to build a door opener you can use a cylinder that can open and close it. Sliding side ways you will mount one end onto a rail that keeps it straight and the other end to the front of the cylinder shaft. You then use an pneumatic valve with either a pilot operated control via pressure plate to stand on or an electric solenoid getting a signal from a motion detector. then air is applied to the front of the cylinder to move it towards the back and then apply pressure on the back to move it forward. Use a timer to delay it though so it doesn't squash anyone. You can mount the cylinder differently for different movement. Otherwise you get pneumatic linear slides as well that Festo makes or you get pneumatic motors that can move a ball screw to move the door. Phone a Festo or Bosch agent in your area for specific products.

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