Today, we have prepared one of the most crucial and basic points for you, and it has been specially refined. Once you break this "window", you are a vacuum expert!
Figure 1: A vacuum system
A vacuum system, mainly consists of three parts: the vacuum generator, the direction and logic control part, and the execution part. Among them, the most varied, is the execution part, the core part of which is the vacuum cup.
Vacuum cups are rings or discs shape made of rubber or other materials for absorbing objects; they are connected to the system with different metal connectors depending on the functional requirements.
Figure 2: Various types of vacuum cups
Common Styles of Vacuum Cups
01 Thin Vacuum Cup
The characteristics of thin vacuum cups: the bottom of the vacuum cup and the surface of the adsorbed object can achieve a basic fit. Meet the surface flatness of the easily deformed products adsorption.
Figure 3: Thin vacuum cup
Thin vacuum cups for handling a variety of different materials such as LCD substrates, film rolls, and fabrics.
Figure 4: Nature differences
02 The Double Vacuum Cup
Features of the double vacuum cup: double layer organ design can be used to adsorb products with a certain curvature of the surface. And itself with a certain amount of cushioning.
Figure 5: The double vacuum cup
The double vacuum cups, which can be used to handle various materials with a certain curvature of surface such as marble, tile, sphere and other materials with surface difference.
Figure 6: Irregular surface
03 Sponge Vacuum Cup
Sponge vacuum cup features: made of CR neoprene material, hardness A15 / S, closed sponge can be made into a random size.
Figure 7: Sponge Vacuum Cup
Sponge vacuum cups, can be used to handle materials with very different surfaces, circuit boards, tiles, even steel and aluminum coils, etc.
Figure 8: Different Surfaces
Selection of Vacuum Cups
01 Vacuum Cup Lifting Position
When designing the system, the location of the vacuum cups needs to be considered in advance.
Figure 9: The center of gravity on the adsorbent
If the center of the vacuum cup is not on the center of gravity of the adsorbent, the deflection moment generated by the shift of the center of gravity during the movement of the material will act on the adsorbent and cause it to fall off.
Figure 10: Lateral Movement To Be Cautious
If the distance between the center of gravity of the adsorbed object and the adsorption surface of the vacuum chuck is large, it is advisable to implement measures to prevent lateral shaking or reduce the moving speed if the object itself is heavy. In this case, even if the center of gravity of the adsorbent is below the center of the vacuum chuck, if the center of gravity of the adsorbent is far away from the adsorption surface and the adsorbent is heavy, lateral shaking may occur when moving, and the resulting deflection moment may cause the adsorbent to fall off.
02 The Safety Factor
The safety factor is set differently for different lifting aspects of the vacuum cups: for lifting, the vacuum cups are placed horizontally - S=4; for vertically - S=8.
Figure 11: Lifting direction illustration
03 Vacuum Cup Diameter Calculation
When the shape of the selected vacuum cup is conventional round, the diameter of the cup is calculated according to the following formula.
D: Diameter of vacuum cups required
M: Weight of adsorbent (kg)
S: Safety factor (horizontally - S=4; for vertically - S=8)
N: indicates the number of vacuum cups
P: straight emptiness/pressure (-kpa)
Look at it this , isn't vacuum technology easy? Well! Knowing this, you are also a vacuum expert!