Welding torch assembly and method
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United States of America Patent
Stats
-
May 28, 1996
Grant Date -
N/A
app pub date -
Mar 9, 1995
filing date -
Mar 9, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A welding system includes a feeder with a reel rotatably mounted therein for supplying welding wire; and a torch having a cable extending therefrom connected to the feeder for receiving wire therefrom and a pair of opposing conductive drive rolls connected to a source of charging power and mounted for powered rotation on the torch. The rolls engage, charge and deliver the wire to the work piece. Opposing rollers driven by a motor through a clutch also pull the wire from the reel in the feeder and push it through the cable. The torch is equipped with a nozzle on the torch is fitted with a nonconductive delivery tube to guidingly receive the welding wire without sparking. A unique method of delivering a charged wire electrode in a MIG welding torch assembly is disclosed. Also disclosed is a special configuration for the groove for engaging the wire electrode between the rolls or rollers.
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