Electric heating – Metal heating – For bonding with pressure
Patent
1993-05-17
1994-11-01
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219 5621, 219 869, 219110, B23K 1124
Patent
active
053609581
ABSTRACT:
A resistance welding apparatus for welding a wire to a metallic pad of an integrated circuit. The welding apparatus has coaxial welding electrodes with the outer electrode being in the form of a tube. The inner electrode is a cylindrical rod and is located in the outer electrode. The end of the outer electrode has two opposed open-ended V-shaped slots. The slots receive and position the wire. With the wire located in the slots, the end of the outer electrode is engaged with the pad and the inner electrode pushes the wire against the pad. Welding current can now be applied to the electrodes. Each electrode is associated with a load cell that senses electrode force. Welding current is applied to the electrodes only after the electrode force of each electrode attains certain predetermined values.
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Bogue Terry L.
Osborne Hollis D.
Delco Electronics Corporation
Meland Creighton R.
Navarre Mark A.
Shaw Clifford C.
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