Welding apparatus with monitor means

Abstract

Abstract A welding apparatus with monitor means including a welding torch (1) having an electrode (3) located in the vicinity of its forward end and supported at its rearward portion by a welding head (2) for rotational movement about its longitudinal axis and back-and-forth reciprocatory movement along the longitudinal axis. The welding torch further includes an electric conductor (13) covered at its outer periphery with an insulator (14) and formed with a gas sump (17) in the vicinity of the electrode. The electric conductor has defined therein a gas supply passageway (16) for supplying gas shield gas, a bore for allowing an image guide (4) and a light guide (5) to extend therethrough, and a bore (23) for allowing a fluid to flow therethrough to cool the electric conductor. The image guide and light guide have their forward ends located in the gas sump, so that they can command a view of outside through guide openings (19, 20) serving concurrently as gas ejecting ports for ejecting the shield gas therethrough. A filter is located at the other end of the image guide, and an industrial television camera (7) and a television receiver (9) are mounted for converting optical images formed on the filter to television pictures to enable monitoring of welding operations to be effected.

Inventors

• 👤 Yohichi Takahashi
• 👤 Hiroyuki Takahashi
• 👤 Yasuaki Sugie
• 👤 Junichiro Morisawa

Bibliographic Details