Vacuum Lifting Cylinders

Vacuum lifting cylinders are joined to a vacuum generator (ejector or vacuum pump). The vacuum is applied through a 3-way valve that should be mounted in close proximity to the lifting cylinder. The piston of the latter moves out instantaneously until the lip of the suction cup makes positive contact with the workpiece, whereupon it snaps back to ist starting position. The workpiece is held until the valve cuts off the vacuum, causing the workpiece to drop.