Apparatus for weld head to pipe joint alignment for welding

Details Apparatus for weld head to pipe joint alignment for welding Apparatus for weld head to pipe joint alignment for welding

1997-07-23

1998-11-17

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219 60A, 21912511, B23K 910

Patent

active

058379665

ABSTRACT:
An improvement to orbital welding heads and welding systems for welding pipe and tubing butt joints, consisting of a removable or retractable detector module in the welding head for sensing the proper alignment of the welding head to the pipe joint prior to welding. The module contains a light source that shires a light beam on the pipe wall, and a detector with associated circuitry and output indicators to signal when the reflected light is interrupted by the presence of a seam or pipe joint. The module may be in the form of a battery powered module that with the use of sleeves fits into the viewing port of a variety of welding heads, or it may be an integral capability that retracts into the side of the weld head out of the way of the welding tip orbiting mechanism. The improvement extends to an automated traversing capability of the welding head along the pipe, in concert with the alignment sensor capability, to provide automated location and clamping of the weld head in the correct position of alignment for welding.

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patent: 4988201 (1991-01-01), Sugitani et al.
patent: 5570187 (1996-10-01), Nihei et al.

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