Monitoring weld voltage

Details Monitoring weld voltage Monitoring weld voltage

1991-06-28

1992-12-15

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 64, B23K 1125

Patent

active

051719614

ABSTRACT:
A seam weld machine includes a voltage monitoring circuit (9) for determining weld quality. The voltage is sensed by two pick-ups. A first pick-up is in the form of a conductive rider (10), mounted to directly sense the voltage from a weld wire (4). The wire (8) from the second pick-up is short and is fed through a gap in the z-bar (6) of the machine to emerge close to the wire from the first pick-up, thus reducing electromagnetic interference and noise.

REFERENCES:
patent: 4714816 (1987-12-01), Pazzaglia
patent: 4939335 (1990-07-01), Mueller

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