JPS5764706A - Production of metallic tube incorporating optical fiber and apparatus for reducing diameter of metallic tube - Google Patents

Production of metallic tube incorporating optical fiber and apparatus for reducing diameter of metallic tube

Info

Publication number
JPS5764706A
JPS5764706A JP55141763A JP14176380A JPS5764706A JP S5764706 A JPS5764706 A JP S5764706A JP 55141763 A JP55141763 A JP 55141763A JP 14176380 A JP14176380 A JP 14176380A JP S5764706 A JPS5764706 A JP S5764706A
Authority
JP
Japan
Prior art keywords
metallic tube
optical fiber
diameter
metallic
reducing apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP55141763A
Other languages
Japanese (ja)
Other versions
JPH0262845B2 (en
Inventor
Yoshihiro Naganuma
Kazuya Abe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Kansai Electric Power Co Inc
Original Assignee
Fujikura Ltd
Kansai Electric Power Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujikura Ltd, Kansai Electric Power Co Inc filed Critical Fujikura Ltd
Priority to JP55141763A priority Critical patent/JPS5764706A/en
Publication of JPS5764706A publication Critical patent/JPS5764706A/en
Publication of JPH0262845B2 publication Critical patent/JPH0262845B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4486—Protective covering
    • G02B6/4488—Protective covering using metallic tubes

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Insulated Conductors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

PURPOSE:To form a metallic tube for incorporating an optical fiber and improve working efficiency by forming the metallic tube successively so as to cover the periphery of the advancing optical fiber warmly and reducing the diameter of the metallic tube by plural times. CONSTITUTION:An optical fiber 1 and a metallic tape 3 are fed from reels 1 and 2, respectively and the optical fiber 1 advances while getting on the magnetic tape 3. On the way of the advance, both the edges of the metallic tape 3 are molded roundly by the modling die 6-L of a forming unit 6 and the butted edges are welded by a welding torch 7 to form the metallic tube. The diameter of the metallic tube is reduced by the first diameter reducing apparatus 8 and, after passing through a vortex flow flaw detector, the metallic tube is pulled out by a catapillar 10. Then the diameter is reduced again by the 2nd diameter reducing apparatus and, after being reduced again by the 3rd diameter reducing apparatus if necessary, the metallic tube is wound up around a winding drum 11.
JP55141763A 1980-10-09 1980-10-09 Production of metallic tube incorporating optical fiber and apparatus for reducing diameter of metallic tube Granted JPS5764706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55141763A JPS5764706A (en) 1980-10-09 1980-10-09 Production of metallic tube incorporating optical fiber and apparatus for reducing diameter of metallic tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141763A JPS5764706A (en) 1980-10-09 1980-10-09 Production of metallic tube incorporating optical fiber and apparatus for reducing diameter of metallic tube

Publications (2)

Publication Number Publication Date
JPS5764706A true JPS5764706A (en) 1982-04-20
JPH0262845B2 JPH0262845B2 (en) 1990-12-26

Family

ID=15299609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141763A Granted JPS5764706A (en) 1980-10-09 1980-10-09 Production of metallic tube incorporating optical fiber and apparatus for reducing diameter of metallic tube

Country Status (1)

Country Link
JP (1) JPS5764706A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165157A (en) * 1984-09-07 1986-04-03 Furukawa Electric Co Ltd:The Detection of defect of metallic pipe
JPS61106443A (en) * 1984-10-31 1986-05-24 Fujikura Ltd Preparation of metallic tube containing optical fiber inside
JPH01178906A (en) * 1987-12-29 1989-07-17 Yoshino Seiki:Kk Method for inserting optical fiber into pipe
US5210391A (en) * 1989-12-05 1993-05-11 Nkk Corporation Apparatus for manufacturing metal tube covered optical fiber cable and method therefor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165157A (en) * 1984-09-07 1986-04-03 Furukawa Electric Co Ltd:The Detection of defect of metallic pipe
JPS61106443A (en) * 1984-10-31 1986-05-24 Fujikura Ltd Preparation of metallic tube containing optical fiber inside
JPH01178906A (en) * 1987-12-29 1989-07-17 Yoshino Seiki:Kk Method for inserting optical fiber into pipe
US5210391A (en) * 1989-12-05 1993-05-11 Nkk Corporation Apparatus for manufacturing metal tube covered optical fiber cable and method therefor
US5380977A (en) * 1989-12-05 1995-01-10 Nkk Corporation Apparatus for manufacturing metal tube covered optical fiber cable and method therefor

Also Published As

Publication number Publication date
JPH0262845B2 (en) 1990-12-26

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