Browse Prior Art Database

Pin Header Eject System

IP.com Disclosure Number: IPCOM000040336D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Bird, KA: AUTHOR

Abstract

A modification has been proposed for machines producing input/output (I/O) pins for semiconductor devices. The development provides for using compressed air to effect the speedy removal of the pins so as to avoid jamming of the exit opening of the machine. In manufacturing pins for use in semiconductor substrates, a pin header machine fabricates the pins from coiled wire. In its operation the machine was subject to jamming due to the pins sticking to the eject punch and getting caught up in the eject bushing. A pin eject system was developed consisting of an outer bushing 1 and inner bushing 2. The outer bushing has a half-moon counter bore 15 cut in its top which prevents it from rotating and provides a secure mount under the rotary table 3 of the pin header machine.

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Pin Header Eject System

A modification has been proposed for machines producing input/output (I/O) pins for semiconductor devices. The development provides for using compressed air to effect the speedy removal of the pins so as to avoid jamming of the exit opening of the machine. In manufacturing pins for use in semiconductor substrates, a pin header machine fabricates the pins from coiled wire. In its operation the machine was subject to jamming due to the pins sticking to the eject punch and getting caught up in the eject bushing. A pin eject system was developed consisting of an outer bushing 1 and inner bushing 2. The outer bushing has a half-moon counter bore 15 cut in its top which prevents it from rotating and provides a secure mount under the rotary table 3 of the pin header machine. This table carries the die 4 and the eject punch 5 which in its final position ejects a pin 6 into a position 7 at the top of the inner bushing. A 45~ angle shape 8 in the top of the inner bushing directs compressed air above the pinhead in a full 360~ manner. The compressed air enters through a port 9 at the base of the outer bushing and travels in flats 10 upwards to the angled air- entry position 8. The air exerts a force on the pin located in the position 7 at the top of the bushing, causing it to be ejected 11 into a pin container. The inner and outer bushings have mounts for the emitter 12 and receiver 13 of an optical sensor. As the light path 14 passes through the bus...