Simmatic were approached to supply a cost effective Vacuum Table for the Glass Industry. This table was designed to handle a range of sizes of glass, assisting the application of Super Spacer to sealed units. We opted for our range of smallest multi stage Vacuum Pumps VTC3031 with an integral Economiser. The Economiser controls the use of compressed air to the pump using only enough air to evacuate the vacuum cup. This is achieved using a adjustable diaphragm operated pneumatic vacuum switch. When vacuum level is reached a pilot air signal closes the air supply valve, holding the vacuum on integral non return valves. A Hysteresis of approximately 10% switches the air back on as vacuum decays. The operator controls the vacuum on / off with a foot operated control valve, leaving his hands free to position the glass as required.
The result is a very simple Vacuum Table with no electrics and a minimal amount of compressed air, using little or no air once vacuum is achieved.