Device for feeding a wire electrode
AssigneeESAB Aktiebolag
InventorsKnut F. I. Boden, Christian J. Henningsen, Arvo Koster
Life of this patent
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Abstract
Device for feeding a consumable wire electrode. Two feeding units are mounted in tandem. Each of the feeding units is provided with a pair of rolls and coupled to a direct current motor driving one of the rolls in the pair. The two motors are connected in series.
Claims7
A device for feeding a consumable wire electrode comprising:
- two feeding units for feeding a wire electrode arranged in tandem, each of the feeding units including a pair of rolls for feeding a wire electrode therebetween and a direct current motor having an armature for driving one of the rolls of the pair, and means for connecting the armatures of said motors in series with each other to a supply voltage.
A device for feeding a consumable wire electrode comprising, two feeding units for feeding a wire electrode arranged in tandem, each of the feeding units including a pair of rolls and a direct current motor having an armature for driving one of the rolls of the pair, means for connecting the armatures of said motors in series with each other to a supply voltage, means for comparing the armature voltage of each of the two motors with a predetermined voltage, said comparing means being arranged to generate a signal when the deviation of the armature voltage of any motor from the predetermined voltage is greater than a given value, a switch in the armature circuit of the motors, and means controlled by said signal for causing said switch to disconnect the armature circuit from the supply voltage.
Dependencies are inferred from the claim text.