Browse Prior Art Database

Air Operated Limited Movement Mechanism

IP.com Disclosure Number: IPCOM000088434D
Original Publication Date: 1977-Jun-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Scanlon, WJ: AUTHOR [+2]

Abstract

Disclosed is a mechanism particularly suitable for use in semiconductor chip-handling apparatus.

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Air Operated Limited Movement Mechanism

Disclosed is a mechanism particularly suitable for use in semiconductor chip- handling apparatus.

In Fig. 1, the vacuum pencil 4 and pencil block 2 are in the up position. In Fig. 2 they are in the down position. Block 2 is biased in the up position by cantilever springs 1. Block 13 has an incline 7 where upper cantilever spring 1 is fastened. The purpose of the incline is to generate a preload upward force.

When downward motion is desired, an air pressure pulse is fed through tube 8 and channel 6A. This pressure pulse creates a pressurized chamber 6 which applies a downward force on the lower cantilever spring 1. The downward deflection takes place until the upper cantilever spring is stopped by adjusting screw 10. The pressure chamber is contained within block 13, lower cantilever spring 1, rubber seal 3 and the two side walls 9. When the pressure is released, the mechanism returns to its original position, as shown in Fig. 1. Mounting block 12 is the base on which the mechanism is mounted.

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