Automatic pipe circumference welding apparatus

Details Automatic pipe circumference welding apparatus Automatic pipe circumference welding apparatus

B - Operations, Transporting

23

K

327/37

B23K 37/02 (2006.01) B23K 9/028 (2006.01)

Patent

CA 1152161

ABSTRACT OF THE DISCLOSURE Herein disclosed is an automatic welding apparatus which comprises an arcuate frame including an welding unit and a pair of wire feeders, and an arcuate frame including a running truck and a pair of clamping mechanisms for fastening the outer circumference of a pipe to be welded. The afore- mentioned two arcuate frames are detachably connected at two positions thereby to form a ring shape. Thus, the pipe is automatically welded while the truck is being made to run in the circumferential direction. The running truck of the welding apparatus thus constructed carries both a mechanism for effecting close contact with the outer circumference of the pipe and a shock absorbing mechanism so that the distance between the leading end of a welding torch and the outer circumference of the pipe may be constant at all times. Moreover, the clamping mechanisms are electrically operated so that they can be handled with ease. As the welding unit, there are provided the welding torch and two wire feed guides having their leading ends facing the welding torah thereby to facilitate the multi-layered welding operations.

370800

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