Browse Prior Art Database

Wire Feed Mechanism

IP.com Disclosure Number: IPCOM000091321D
Original Publication Date: 1968-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Buechele, J: AUTHOR [+2]

Abstract

The mechanism feeds wire into through holes of an insulating substrate, typically ceramic or other material. The wire is cut subsequently, wedged in the hole, fastened, and serves as a contact pin. The feed mechanism includes block 11 provided with vertical groove 12 through which wire 13, typically 0.018'' copper, is fed. The mechanism further includes cams 14 and 15 mounted on common power shaft 16. Cam 14 imparts vertical reciprocal movement to tool housing 17. Cam 15, which is slightly relieved, imparts horizontal reciprocal movement to spring-loaded wire indentor 18 slidably held within housing 17.

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Wire Feed Mechanism

The mechanism feeds wire into through holes of an insulating substrate, typically ceramic or other material. The wire is cut subsequently, wedged in the hole, fastened, and serves as a contact pin. The feed mechanism includes block 11 provided with vertical groove 12 through which wire 13, typically 0.018'' copper, is fed. The mechanism further includes cams 14 and 15 mounted on common power shaft 16. Cam 14 imparts vertical reciprocal movement to tool housing 17. Cam 15, which is slightly relieved, imparts horizontal reciprocal movement to spring-loaded wire indentor 18 slidably held within housing 17.

The feed cycle commences, upon rotation of shaft 16, with the sharp end of indentor 18 embedding itself in wire 13. Then cam 14 causes housing 17 and wire 13, which still has indentor 18 embedded in it, to move downwardly. Spring 19, positioned in a gap between housing 17 and block 11 against the wire 13, serves as a self-adjusting support to prevent such wire from buckling as it is fed downwardly. Spring 19 is ground flat where it comes in contact with wire 13 allowing a wider area of contact between such spring and the wire thus preventing spring rotation.

When housing 17 reaches the bottom of its stroke, cam 15 releases indentor 18 permitting it to move out of wire 13. Cam 14 relaxes pressure on housing 17 allowing spring 20 to draw it upwardly to starting position.

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