Process and apparatus for exhausting fumes produced by arc welding
AssigneeMitsubishi Jukogyo Kabushiki Kaisha
InventorsTakashi Ohmae, Yasuhiro Fukaya, Yasuyuki Yoshida, Tamotu Oka, Masahiko Sato, Masazumi Nagareda
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Abstract
During arc welding, optical radiation emitted from an arc is detected by means of a photoelectric device, and an electric detection signal from the photoelectric device is used for controlling the travel of a suction hood along a weld line so that the weld fumes may be exhausted through the suction hood and to insure that the weld metal zone is always covered by the suction hood.
Claims10
A process for exhausting weld fumes, wherein during arc welding, optical radiation emitted from an arc is detected by photelectric means provided on a suction hood, said suction hood is made to travel along a weld line in response to an electric detection signal from said photelectric means which is related to an intensity of illumination of said optical radiation at said suction hood so that said hood may be maintained within a predetermined range, of travel and thereby the weld fumes are exhausted through said suction hood while said suction hood is always covering a weld metal zone.
An apparatus for exhausting weld fumes comprising a truck capable of travelling along the direction of progress of welding, driving means for making said truck travel, a suction hood supported from said truck, a fume processor connected to said suction hood, photoelectric means mounted on said suction hood for detecting optical radiation emitted from a welding arc, and control means interposed between said photoelectric means and said driving means for controlling starting and stopping of said travelling of said truck.
Dependencies are inferred from the claim text.