Electric heating – Metal heating – For bonding with pressure
Patent
1977-10-31
1979-01-30
Goldberg, E. A.
Electric heating
Metal heating
For bonding with pressure
219 84, B23K 1106
Patent
active
041374444
ABSTRACT:
An electrical resistance-roll seam welding machine having a pair of welding rolls or rollers and at least one electrode wire which is guided from a supply station for the infeed of fresh welding wire by means of at least one of the welding rolls to a collecting station or location for used or consumed wire. The electrode wire can be brought into contact by means of the welding rolls with the workpiece which is to be welded. A brake device is arranged between the supply station and the welding rolls and a tension device for the electrode wire is disposed between the welding rolls and the collecting station or location. The sum of the tension force exerted by the tension device upon the wire and the brake force exerted by the brake device upon the wire is great enough in order to continuously maintain in tensioned state the electrode wire through its path of travel between the brake device and the tension device. At least one of the welding rolls is operatively coupled with a drive device which imparts to the electrode wire which is guided by means of said one welding roll a speed of travel coinciding with the desired feed speed of the workpieces during the formation of the welding seam. The difference between the tension force exerted by the tension device upon the wire and the brake force exerted by the brake device upon the wire is smaller than the entrainment force exerted by the periphery of said one welding roll upon the electrode wire.
REFERENCES:
patent: 3102945 (1963-09-01), Opprecht
patent: 3430027 (1969-02-01), Denis
patent: 3745295 (1973-07-01), Opprecht
Brown Charles E.
Fael S.A.
Goldberg E. A.
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