The right side shows the valve actuated by the solenoid where (P) is now connected to the supply port (A) and the exhaust is closed. The left side shows the pressure port (P) CLOSED, and the supply port (A) is connected to exhaust port (R). In this example, each position is relevant to its two actuators, one being a spring (rest position) and one being solenoid (actuated position). Note that a two-position valve SHOWS the two positions. Therefore, a compressed air valve needs to be added, as shown in Fig. Compressed air is continuously supplied to the vacuum venturi, and once the cup (3) grips the part, the compressed air has to be turned off to release it.
1 shows a very simple circuit: (1) compressed air supply, (2) single-stage vacuum venturi, and (3) vacuum cup. Therefore, the same schematic can be used for many different manufacturers of similar functional devices.įig. Therefore, a master schematic will have the same schematic symbol for this component and how it is connected to associated devices.Ī vacuum schematic symbol, just like in pneumatics or electrical schematics, does not indicate what the component looks like, but only how it functions. The body of a component should always have a schematic symbol on it, but when this is an adhesive label for instance, it could be illegible. Schematic circuits should always be supplied with custom-made machinery, such as vacuum end-of-arm tooling, to aid the maintenance engineers in problem solving and the production engineers when they are looking for ways of improving efficiency after the installation or for adding components if the application changes years later. This article explains the basic schematics and how they should be used to illustrate to the installer or end user how his new system works. In vacuum material handling, there usually are only a handful of separate components, such as a vacuum pump, inlet filter, control valves, and cups.
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