Apparatus for manufacturing metal tube covered optical fiber cab

Details Apparatus for manufacturing metal tube covered optical fiber cab Apparatus for manufacturing metal tube covered optical fiber cab

1993-06-17

1995-08-08

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912164, 385109, B23K 2600

Patent

active

054400953

ABSTRACT:
An apparatus for manufacturing a metal tube covered optical fiber cable, having an assembly (2) consisting of a plurality of roller pairs for forming a metal strip (1) subjected to traction and causing both side edges of the metal strip to abut against each other to form a metal tube, a laser welding device (7) for radiating a laser beam on abutment portions of the metal tube to bond the abutment portions, thereby obtaining a sealed metal tube (1c), and an optical fiber guide means (6) for guiding an optical fiber (5) into the formed metal tube (1a), wherein the laser welding device (7) determines a focal point shift amount so that a rear bead width determined by an outer diameter and a wall thickness of the metal tube falls within a predetermined range, and laser welding is performed at a welding rate corresponding to the determined focal point shift amount.

REFERENCES:
patent: 4759487 (1988-07-01), Karlinski

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