You might have come across a flexible, elastic, curved product resembling a cup being fastened to the wall and you hang on it materials like the key of your car and things like that. These are multi-utility objects called as suction cups. The other utilities of these cups are related to lifting the object, holding and also in moving the objects. Urban climbers use advanced versions of the cups to scale over buildings with smooth surface.
How the cup holds on to the surface…
The mechanism of the suction cups is quite interesting. As already said the cups are made of flexible elastic material and have a curved surface. When you press the centre of the cup against any hard surface, it pushes out part of the air (or water) in the cup, replicating a kind of partial vacuum inside the cup. Thereby, it creates a reduction in the volume of space between surface and the cup. Now, the pressure inside the cup is less than the pressure on the surface. Once the pressure on the cup is withdrawn, then the elastic cup gets its original form and the partial vacuum gets released.
Utility of the cup:
The suction cups are available in several designs depending on their utility. For example, there are flat cups resembling a pipe which are used in articles like vacuum jars and such other materials. Similarly, there are exclusive cups for purposes of glass handling and also in glass handling equipment Australia wide. These cups can be used for handling not only glass, but also plastic. More details at Millsom.
The other unique features of these cups are briefly explained here:
· There are exclusively designed cups like for example flat suction pads, Bellows suction pads, and bell shaped suction pads that are used for handling sheet metal. Each of these design cups is of varying thickness and size. In fact, there are pads made of very hard plastic which are capable of taking heavy loads, that too with higher durability.
· Again there are exclusively designed cups that are effectively employed in jobs like jumboFlex tube lifting and also for purposes of vacuum lifting services. These vacuum sheet lifter cups have greater industrial applications. In fact, this type of cup is also being used in certain areas of lifting equipment.
· The utility of the cups is largely felt in vacuum lifting services. In fact, they are used in various designs of vacuum lifting equipment like jumbo vacuum lifters, vacuum turning table and so on. Here again, the utility of the cup in any of vacuum lifters is directly dependent on the size and design of the cup.
· There are exclusive cups that are used in packaging industry, in industries manufacturing DVD and such other products. There are also cups that are exclusively used in various types of high temperature applications. The suction capacity of the cups depends on its size, thickness, type of material used in its making and various other factors.
This wonderful gadget plays one of the major roles in almost every industrial as well as other type of commercial applications. Some of the industries even custom design the cups depending on their specific area of application. The cups require periodical cleaning so as to retain their efficiency. The cleaning can be done using good quality soap.