Grippers:
They are the grasping or holding devices to hold the components/ objects by using suitable mechanism. It operates similar to fingers used by human being for holding or gripping of component.
They are used to movement of components/ objects from one point to another location.
Sketch of Vacuum actuated grippers
Vacuum actuated grippers(vacuum cups or suction cups)
Vacuum gripper also called vacuum cups or suction cups which uses vacuum as gripping force.
The lifting and holding is done by cups or vacuum surface driven by vacuum system.
It works on the principle of vaccum generated by vacuum pump or venture system.
1. Usually the cups are available in round or oval shape. The common diameter size of cups is in between 30 mm to 200 mm. the selection of cup and number of cups required depends on : a. Weight of the part b. Part size and shape. c. Nature and type of part etc. Some time to increase the contact area, multiple cups are used vacuum cups are used to lift flat as well as curved surfaces.
Examples – vacuum cup or suction cup, some vacuum grippers use a closed –cell foam rubber layer for gripping application