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Uniform Force, Independent Vacuum Gripper

IP.com Disclosure Number: IPCOM000040854D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Frank, V: AUTHOR [+4]

Abstract

The uniform force, independent vacuum gripper 10 allows one robot to pick up various numbers of parts from various horizontal planes at one time. Referring to the figure, the gripper 10 consists of pistons 12 arranged to match the positions of articles 14 in a box 16. Articles 14 may be semiconductor chips, module substrates, etc.

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Uniform Force, Independent Vacuum Gripper

The uniform force, independent vacuum gripper 10 allows one robot to pick up various numbers of parts from various horizontal planes at one time. Referring to the figure, the gripper 10 consists of pistons 12 arranged to match the positions of articles 14 in a box 16. Articles 14 may be semiconductor chips, module substrates, etc.

Compressed air is fed through a manifold system in guide plate 18 to fill each cylinder chamber 20 between guide plate 18 and pistons 12. This air acts as a cushion that provides constant downward pressure as a robot lowers articles 14 during loading and unloading.

A master solenoid (not shown), controlled by a robot controlle supplies vacuum to the grippers when articles must be picked up or carried. Ports 22 direct the vacuum from a manifold system to the top surface of each gripper. As the gripper is lowered, a fiber-optic photocell is used to determine if an article is present at each location. If an article is there, vacuum will be directed to the pistons so that the part can be gripped.

The lower outer edge of the piston 24 is shaped like the article 14. O-rings 26 ensure a good suction seal.

This gripper concept can be adapted and used for transporting any type, shape or size of fragile parts. The uniform pressure and automatic vacuum shutoff provide a way to pick up various numbers of parts at various heights.

(Image Omitted)

Disclosed anonymously

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