Actively cooled weld head cassette

Details Actively cooled weld head cassette Actively cooled weld head cassette

1993-07-22

1994-02-22

Shaw, Clifford C.

Electric heating

Metal heating

Of cylinders

219 75, B23K 902

Patent

active

052889637

ABSTRACT:
An orbital welding head for joining two tubes positioned end-to-end includes a welding electrode which is rotated around the tubes and a pair of clamps for holding the tubes in the correct position with respect to each other and the welding electrode. The clamps include a fixed member, a rotatable member and a hinge assembly for joining the rotatable member to the fixed member. The rotatable clamp members are moved clear of the tubes when the tubes are either inserted into or removed from the welding head. Fluid channels are formed in both the fixed and rotatable clamp members. The hinge assembly connects the rotatable clamp member with the fixed member. Fluid channels within the hinge assembly allows cooling fluid introduced into the fixed member to be carried through that member into the rotatable member, cooling both. A return fluid channel is also provided by the hinge. The hinge is provided with a passageway for transferring cooling fluid from one rotatable clamp member to another. Because the rotatable clamp members are cooled, they can be opened by the operator without requiring the use of gloves.

REFERENCES:
patent: 4554429 (1985-11-01), Kazlauskas
patent: 5220144 (1993-06-01), Jusionis

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