JPS5782139A - Drawing method of rod-like quartz glass - Google Patents

Drawing method of rod-like quartz glass

Info

Publication number
JPS5782139A
JPS5782139A JP15909980A JP15909980A JPS5782139A JP S5782139 A JPS5782139 A JP S5782139A JP 15909980 A JP15909980 A JP 15909980A JP 15909980 A JP15909980 A JP 15909980A JP S5782139 A JPS5782139 A JP S5782139A
Authority
JP
Japan
Prior art keywords
chuck
heat source
outside diameter
lowering speed
taking
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.)
Pending
Application number
JP15909980A
Other languages
Japanese (ja)
Inventor
Motohiro Nakahara
Masao Nishimura
Takashi Namikawa
Kazuaki Yoshida
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.)
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
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 Furukawa Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Furukawa Electric Co Ltd
Priority to JP15909980A priority Critical patent/JPS5782139A/en
Publication of JPS5782139A publication Critical patent/JPS5782139A/en
Pending 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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • C03B37/0124—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down

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)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To make the outside diameter of a drawn preform rod uniform with a high accuracy, by giving the lowering speed command to a taking off chuck after the time of measurement to carry out the control of the taking off speed according to the measured values of the outside diameter of an undrawn quartz glass rod-like material when the point of measurement arrives at a heat source. CONSTITUTION:The top of a quartze glass rodlike material 1 is fixed by a feed chuck 2, and the lower end of the material 1 is fixed by a taking off chuck 3 respectively. A heat source 4 and a non-contact outside diameter measuring apparatus 5 are operated, and the chuck 3 is lowered at a given speed higher than the given lowering speed of the chuck 2. The material 1 passing through the heat source 4 is molten, and the chuck 3 is lowered to draw and reduce the diameter of the material 1 to form a preform rod 8. The output of a time delay control system 6 as a lowering speed command is fed back to the chuck 3 at a given time lag according to the previously set program in the time delay control system 6, and the lowering speed of the chuck 3 is controlled according to the outside diameter of the material 1 when the point of measurement arrives at the heat source 4.
JP15909980A 1980-11-12 1980-11-12 Drawing method of rod-like quartz glass Pending JPS5782139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15909980A JPS5782139A (en) 1980-11-12 1980-11-12 Drawing method of rod-like quartz glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15909980A JPS5782139A (en) 1980-11-12 1980-11-12 Drawing method of rod-like quartz glass

Publications (1)

Publication Number Publication Date
JPS5782139A true JPS5782139A (en) 1982-05-22

Family

ID=15686208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15909980A Pending JPS5782139A (en) 1980-11-12 1980-11-12 Drawing method of rod-like quartz glass

Country Status (1)

Country Link
JP (1) JPS5782139A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111937A (en) * 1982-12-15 1984-06-28 Furukawa Electric Co Ltd:The Processing of optical fiber matrix
EP0846665A3 (en) * 1996-12-09 1999-01-07 Shin-Etsu Chemical Co., Ltd. Process and apparatus for manufacturing a glass preform for optical fibres by drawing a preform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111937A (en) * 1982-12-15 1984-06-28 Furukawa Electric Co Ltd:The Processing of optical fiber matrix
EP0846665A3 (en) * 1996-12-09 1999-01-07 Shin-Etsu Chemical Co., Ltd. Process and apparatus for manufacturing a glass preform for optical fibres by drawing a preform

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