OnRobot HEX-E QC - Page 212

Amount
Cups
* Area
Cup
[mm] = 14700
Payload [kg]
Vacuum [kPa]
It is often a good idea to use more vacuum cups than needed, to accommodate for vibrations,
leaks and other unexpected conditions. However, the more vacuum cups, the more air
leakage (air
flow) is expected and the more air is moved in a grip resulting in longer gripping
times.
When using porous materials, the vacuum that can be achieve by using the OnRobot suction
cups will depend on the material itself and will be between the range stated in the
specifications. Some of the most common non-porous materials are listed below:
•
Fabrics
•
Foam
•
Foam with open cells
•
Low density cardboard
•
Low density paper
•
Perforated materials
•
Untreated wood
See the table below with general recommendations, in case other suction cups are needed
for
specific materials.
Workpiece surface
Vacuum cup shape Vacuum cup material
Hard and flat Normal or dual lip Silicone or NBR
Soft plastic or plastic bag Special plastic bag type Special plastic bag type
Hard but curved or uneven Thin dual lip Silicone or soft NBR
To be painted afterwards Any type NBR only
Varying heights 1.5 or more bevels Any type
NOTE:
It is recommended to consult a vacuum cup specialist to find the optimal
vacuum cup where the standard types are insucient.
Suction Cups for Foil and Bags Ø25
This suction cup improves the vacuum gripper’s ability to pick and place workpieces with
surface of foil, thin paper, and plastic bags during irregular and angular arm movement.
HARDWARE SPECIFICATION
212