Grid welding machine operating according to the electrical resistance welding principle
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United States of America Patent
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Jul 28, 1992
Grant Date -
N/A
app pub date -
Feb 5, 1990
filing date -
Jun 8, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a grid welding machine with a horizontal longitudinal wire guide path (4) and transverse wire feeders (27, 28) arranged above and below the latter and transverse rows of active welding electrodes (7, 8), the two rows of electrodes (7, 8) are moved up or down away from the longitudinal wire path (B--B) in synchronization with the welding cycle before transverse wires (Q1, Q2) are placed simultaneously on each side of the longitudinal wire assemblage (L). The transverse wires (Q1, Q2) are then brought into the welding position between the two rows of electrodes (7, 8) and the electrodes are applied to these transverse wires (Q1, Q2). Finally, a row of electrodes (7) are stopped as an abutment against which the welding pressure is applied through the other row of electrodes (8) so that a welding current flows between each electrode pair (7, 8) in series over the point of intersection of each longitudinal wire (L) with two contacting transverse wires (Q1, Q2).
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