FR2383138A1 - Automatic starting of optical fibre drawing - with control of drawing speed for accurate and uniform fibre dia. - Google Patents

Automatic starting of optical fibre drawing - with control of drawing speed for accurate and uniform fibre dia.

Info

Publication number
FR2383138A1
FR2383138A1 FR7707008A FR7707008A FR2383138A1 FR 2383138 A1 FR2383138 A1 FR 2383138A1 FR 7707008 A FR7707008 A FR 7707008A FR 7707008 A FR7707008 A FR 7707008A FR 2383138 A1 FR2383138 A1 FR 2383138A1
Authority
FR
France
Prior art keywords
fibre
premoulding
drum
primer
speed
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
FR7707008A
Other languages
French (fr)
Other versions
FR2383138B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7707008A priority Critical patent/FR2383138A1/en
Publication of FR2383138A1 publication Critical patent/FR2383138A1/en
Application granted granted Critical
Publication of FR2383138B1 publication Critical patent/FR2383138B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/0253—Controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
    • C03B37/032—Drawing means, e.g. drawing drums ; Traction or tensioning devices for glass optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
    • G01B11/10—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving
    • G01B11/105—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving using photoelectric detection means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/40—Monitoring or regulating the draw tension or draw rate
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/44—Monotoring or regulating the preform feed rate

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

Appts. for drawing an optical fibre from a premoulding, esp. from silicon oxide, includes a mechanism for lowering the premoulding, a furnace, working for pref. by induction, and a drawing drum. There are also devices for regulating the temp. of the furnace and the speed of the mechanism for lowering the premoulding, so that the feed in volume of the premoulding entering the furnace remains constant. The dia. of the fibre produced is monitored by devices arranged on each side of it, and these consist of >=1 light source and a photo-sensitive head on which the beam of light casts the shadow of the fibre. The signal generated is used to control the speed of the drawing drum at least. In the direction of the path followed by the fibre, the photosensitive head or heads extends (extend) over a predetermined distance so that the monitor is not affected by differences at points. Device for starting up the drawing of the fibre automatically which includes on the one hand, means of lowering a primer of the premoulding, behind which there is a primer of the fibre. The device acts in such a way that at the moment the latter reaches the level of the shaft of the drawing drum, it has a vectorial speed equal to the peripheral speed of the drum. An ancillary device acts at that moment to cause the abrupt adhesion of the primer to the drum, and if necessary to cut off the primer below the point of attachment.
FR7707008A 1977-03-09 1977-03-09 Automatic starting of optical fibre drawing - with control of drawing speed for accurate and uniform fibre dia. Granted FR2383138A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7707008A FR2383138A1 (en) 1977-03-09 1977-03-09 Automatic starting of optical fibre drawing - with control of drawing speed for accurate and uniform fibre dia.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7707008A FR2383138A1 (en) 1977-03-09 1977-03-09 Automatic starting of optical fibre drawing - with control of drawing speed for accurate and uniform fibre dia.

Publications (2)

Publication Number Publication Date
FR2383138A1 true FR2383138A1 (en) 1978-10-06
FR2383138B1 FR2383138B1 (en) 1982-04-23

Family

ID=9187833

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7707008A Granted FR2383138A1 (en) 1977-03-09 1977-03-09 Automatic starting of optical fibre drawing - with control of drawing speed for accurate and uniform fibre dia.

Country Status (1)

Country Link
FR (1) FR2383138A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016302A1 (en) * 1979-01-16 1980-10-01 Siemens Aktiengesellschaft Method and apparatus to determine the flow of especially a highly viscous liquid leaving an opening as a free falling jet
WO1980002139A1 (en) * 1979-03-29 1980-10-16 A Regreny Apparatus for the multiple drawing of fibers allowing the simultaneous drawing of a plurality of optical fibers,then the multifiber cabling on line
FR2670883A1 (en) * 1990-12-21 1992-06-26 Alcatel Fibres Optiques DEVICE FOR DETECTING THE IRREGULARITIES OF THE DIAMETER OF A WIRE.
EP0604786A2 (en) * 1992-12-31 1994-07-06 Corning Incorporated Method and apparatus for making glass objects by drawing glass preforms
EP0767148A1 (en) * 1995-10-04 1997-04-09 Heraeus Quarzglas GmbH Process and device for manufacturing glass articles by drawing from a preform
US5942019A (en) * 1997-04-11 1999-08-24 Sumitomo Electric Industries, Ltd. Elongating apparatus and method for glass preform and furnace body for elongating apparatus
WO2005116712A1 (en) * 2004-05-24 2005-12-08 Prysmian Cavi E Sistemi Energia S.R.L. Process and apparatus for manufacturing an optical cable

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016302A1 (en) * 1979-01-16 1980-10-01 Siemens Aktiengesellschaft Method and apparatus to determine the flow of especially a highly viscous liquid leaving an opening as a free falling jet
WO1980002139A1 (en) * 1979-03-29 1980-10-16 A Regreny Apparatus for the multiple drawing of fibers allowing the simultaneous drawing of a plurality of optical fibers,then the multifiber cabling on line
DE3041446C2 (en) * 1979-03-29 1989-03-02 Alain Lannion Fr Gouronnec
FR2670883A1 (en) * 1990-12-21 1992-06-26 Alcatel Fibres Optiques DEVICE FOR DETECTING THE IRREGULARITIES OF THE DIAMETER OF A WIRE.
EP0493213A1 (en) * 1990-12-21 1992-07-01 Alcatel Fibres Optiques Apparatus for detecting the irregularities of the diameter of a thread
US5216486A (en) * 1990-12-21 1993-06-01 Alcatel Fibres Optiques Apparatus for detecting irregularities in the diameter of a filament
EP0604786A2 (en) * 1992-12-31 1994-07-06 Corning Incorporated Method and apparatus for making glass objects by drawing glass preforms
EP0604786A3 (en) * 1992-12-31 1994-09-14 Corning Inc Method and apparatus for making glass objects by drawing glass preforms.
AU672055B2 (en) * 1992-12-31 1996-09-19 Corning Incorporated Method and apparatus for making glass objects from glass feedstock
EP0767148A1 (en) * 1995-10-04 1997-04-09 Heraeus Quarzglas GmbH Process and device for manufacturing glass articles by drawing from a preform
US5942019A (en) * 1997-04-11 1999-08-24 Sumitomo Electric Industries, Ltd. Elongating apparatus and method for glass preform and furnace body for elongating apparatus
WO2005116712A1 (en) * 2004-05-24 2005-12-08 Prysmian Cavi E Sistemi Energia S.R.L. Process and apparatus for manufacturing an optical cable

Also Published As

Publication number Publication date
FR2383138B1 (en) 1982-04-23

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Legal Events

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TP Transmission of property
CL Concession to grant licences
TP Transmission of property