Gripper and method of operating the same

摘要

The invention relates to a gripper for handling frames ( 2 ) that are covered with a film ( 3 ) that is intended for the transport of wafers ( 6 ). The gripper comprises at least two flat fingers ( 10 ) that carry flattened finger tips ( 8 ). This construction allows to insert the gripper between two frames ( 2 ) that are mounted in a cassette ( 9 ) without complication. The fingers ( 10 ) support in subsections both the frame ( 2 ) and the film ( 3 ). The film is attached to the frame due to the suction effect exerted by vacuum openings ( 5 ) configured on the frame, thereby fixating the film on the gripper.