Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-11-05
1992-09-08
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250223R, 209556, G01N 2186, B07C 500
Patent
active
051461013
ABSTRACT:
A lead scanning apparatus for scanning the lead to lead integrity of electronic devices having an axial length and leads extending from the sides thereof. The apparatus includes track means for moving individual devices axially along a path to a scanning station on the path. Stop pins stop each of said devices at predetermined locations on the path where a clamp rail assists in positioning the device in a scanning orientation. The scanning unit is movably positioned at the station for movement axially along the length of the device to generate signals upon intersection of leads extending from both sides of the device. Actual signals from the scanner are compared with predetermined signals to determine the existence and spacing of each lead with respect to a predetermined pattern. A signal based on the comparison for each device is generated. The scanner is useful in apparatus for inspecting and straightening the lead integrity and coplanarity of electronic devices having an axially length and leads extending therefrom. The track includes an inlet, and sequentially, a first station for lead to lead scanning, a second station for coplanarity scanning, a third station for lead to lead straightening, and a forth station for coplanarity adjustment. The apparatus has an output station for sorting and dispensing inspected and repaired or rejected devices into designated magazines.
REFERENCES:
patent: 3039604 (1962-06-01), Bicket et al.
patent: 4166540 (1979-09-01), Marshall
patent: 4553843 (1985-11-01), Langley et al.
patent: 4739175 (1988-04-01), Tamura
patent: 4812666 (1989-03-01), Wistrand
patent: 4914290 (1990-04-01), Hilgart et al.
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Claffey Edward T.
Linker, Jr. Frank V.
Linker, Sr. Frank V.
American Tech Manufacturing Corp.
Messinger Michael
Nelms David C.
Renz Jr. Eugene E.
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