公开(公告)号：US3912900A

公开(公告)日：1975-10-14

申请号：US46508074

申请日：1974-04-29

Applicant: CALIFORNIA INST OF TECHN

Inventor： ARNETT JAMES C

IPC: B23K11/00 ,  B23K11/16 ,  H01R43/02 ,  H05K13/06 ,  B23K11/10 ,  B23K11/22

CPC classification number: H01R43/0228 ,  B23K11/0026 ,  B23K11/163 ,  H05K13/06

Abstract: Apparatus for welding a continuous insulated wire to numerous terminal pins of a circuit board, including a solid central electrode which presses the wire against the terminal pin to rupture the insulation and then weld the wire to the pin. A concentric second electrode has a pair of openings on diametrically opposite sides of the center electrode for closely guiding the wire across the face of the central electrode, one of the openings being a hole that completely surrounds the wire and the opposite opening being a slot which is open at its bottom end. After each point of the wire is welded to a terminal pin, the electrodes are lifted and then initially moved parallel to the axis of the wire portion that is welded to the previous terminal pin, and only then is the direction of electrode movement changed to carry it to the next terminal pin.