Datasheet

If a soft workpiece such as vinyl, paper, or thin sheet is picked up,
the vacuum pressure could cause the workpiece to deform or
wrinkle. In such a case, it will be necessary to use a small pad or a
ribbed pad and reduce the vacuum pressure.
3. Soft Work
When pushing a pad to a workpiece, make sure not to apply an
impact or a large force which would lead to premature deformation,
cracking, or wearing of the pad. The pad should be pushed against
the workpiece to the extent that its skirt portion deforms or that its
ribbed portion comes into slight contact with the workpiece.
Especially, when using a smaller diameter pad, make sure to locate
it correctly.
4. Impact to Pad
Pad
Vinyl, paper, etc.
Decide the position
not to strike
 Vacuum Pad Durability
• Need to be careful of the vacuum pad (rubber) deterioration.
• The vacuum pad’s adsorption surface will be worn out when it is used for a certain period of time, and the outer diameter
gradually becomes smaller. The lifting force becomes weaker as the pad diameter becomes smaller, but absorption is still
possible.
• Since the vacuum pad replacement period greatly varies depending on the operating environment, it is extremely difficult to
estimate the replacement period. Specify the period taking into account the actual operating conditions.
Model Selection
 Buffer Attachment
• Use a buffer when there is a variation in the height of workpieces and fragile workpieces are adsorbed (cushioning is
necessary). If it is necessary to further position the pad and the workpiece, use a non-rotating buffer.
If the pad and the workpiece cannot be positioned properly, such as when
picking a workpiece having an uneven height, use a built-in spring type pad
with a buffer. This type of pad acts as a cushion between the pad and the
workpiece. If it is necessary to further position the pad and the workpiece,
use a non-rotating buffer.
Unsteady Distance between Pad and Work
Pad
Pad
 Pad Selection by Work Type
• Carefully select a pad for the following workpieces.
To pick a permeable workpiece such as paper, select a pad with a
small diameter that is sufficient to lift the workpiece. Because a
large amount of air leakage could reduce the pad’s suction force, it
may be necessary to increase the capacity of an ejector or vacuum
pump or enlarge the conductance area of the piping passage.
1. Porous Work
When a workpiece with a large surface area such as sheet glass
or PCB is suspended, the workpiece could move in a wavelike
motion if a large force is applied by wind pressure or by an impact.
Therefore, it is necessary to ensure the proper allocation and size
of pads.
2. Flat Plate Work
Porous work
Plate glass, circuit board, etc.
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