All position automatic welding head and method for operating...

Details All position automatic welding head and method for operating... All position automatic welding head and method for operating...

2007-06-19

2007-06-19

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

Of cylinders

C219S125110

Reexamination Certificate

active

11192174

ABSTRACT:
A welding head which can easily move the torch portion of the welding head in the circumferential direction and the vertical moving direction of the outer circumference of the to-be-welded tubes even in a narrow gap, includes a torch rotating ring that rotates on the outer circumferences of the tubes by matching with the central axis of the to-be-welded tubes and a torch vertical moving ring disposed concentrically with the ring inside the ring, provided with a torch base for supporting a torch on the front ends, a first gear group for driving and rotating the ring around the tubes, a second gear group that is disposed in parallel to the first gear group and drives and rotates the ring around the tubes, a drive shaft for driving the two gear groups, and a torch rotating motor for driving the drive shaft, and a third gear group that can drive the ring while rotating it in the same direction as or in reverse to that of the ring at a speed equal to or higher or lower than that of the first gear group for rotating the ring around the tubes and vertically moving the torch, and a torch vertical moving motor for driving this third gear group.

REFERENCES:
patent: 4168406 (1979-09-01), Torrani
patent: 4379215 (1983-04-01), Rohrberg
patent: 5107090 (1992-04-01), Caillet et al.
patent: 5841089 (1998-11-01), Martinenas
patent: 9-271939 (1997-10-01), None
patent: 2001-225165 (2001-08-01), None
English language Abstract of JP 9-271939.
English language Abstract of JP 2001-225165.

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