JPS57200238A - Drawing of glass material - Google Patents

Drawing of glass material

Info

Publication number
JPS57200238A
JPS57200238A JP8535281A JP8535281A JPS57200238A JP S57200238 A JPS57200238 A JP S57200238A JP 8535281 A JP8535281 A JP 8535281A JP 8535281 A JP8535281 A JP 8535281A JP S57200238 A JPS57200238 A JP S57200238A
Authority
JP
Japan
Prior art keywords
outer diameter
glass rod
point
zone
deformation
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
JP8535281A
Other languages
Japanese (ja)
Inventor
Motohiro Nakahara
Ryoichi Hara
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 JP8535281A priority Critical patent/JPS57200238A/en
Publication of JPS57200238A publication Critical patent/JPS57200238A/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 outer diameter of a drawn glass rod uniform, by scanning and measuring the outer diameter of the heat-drawn part of the glass rod, detecting the point to complete the deformation of the rod, and controlling the drawing so as to get the outer diameter of the point within a preset range. CONSTITUTION:The outer profile of the glass rod 1 at the heating and drawing zone 5 is detected with an ITV camera 8, and the outer diameters d1...dn at the positions y1...yn along the longitudianl direction are digitized with the signal processor 9, stored successively in the memory 10, and transmitted to the optimum outer diameter processor 11. The point to complete the deformation in the drawing zone 5 is determined from the relationship between the zone in which the diameter of the glass rod 1 varies and the zone having uniform diameter. When the outer diameter at the point to complete the deformation is deviated out of the permissible range, the predetermined output signal is transmitted from the optimum outer diameter processor 11 to the outer diameter controlling device 12, which controls the outer diameter by adjusting the pulling rate V2 of the chuck holding the glass rod 1.
JP8535281A 1981-06-03 1981-06-03 Drawing of glass material Pending JPS57200238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8535281A JPS57200238A (en) 1981-06-03 1981-06-03 Drawing of glass material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8535281A JPS57200238A (en) 1981-06-03 1981-06-03 Drawing of glass material

Publications (1)

Publication Number Publication Date
JPS57200238A true JPS57200238A (en) 1982-12-08

Family

ID=13856286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8535281A Pending JPS57200238A (en) 1981-06-03 1981-06-03 Drawing of glass material

Country Status (1)

Country Link
JP (1) JPS57200238A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767148A1 (en) * 1995-10-04 1997-04-09 Heraeus Quarzglas GmbH Process and device for manufacturing glass articles by drawing from a preform
WO2004018373A1 (en) * 2002-07-30 2004-03-04 Pirelli & C. S.P.A. Process and apparatus for elongating of an optical fibre preform
US8113200B2 (en) 2005-05-04 2012-02-14 Avon Protection Systems, Inc. Respirator mask with corrective lens frame assembly
US8333090B2 (en) 2006-10-17 2012-12-18 Prysmian S.P.A. Process for manufacturing a low-attenuation optical fiber

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767148A1 (en) * 1995-10-04 1997-04-09 Heraeus Quarzglas GmbH Process and device for manufacturing glass articles by drawing from a preform
WO2004018373A1 (en) * 2002-07-30 2004-03-04 Pirelli & C. S.P.A. Process and apparatus for elongating of an optical fibre preform
US8113200B2 (en) 2005-05-04 2012-02-14 Avon Protection Systems, Inc. Respirator mask with corrective lens frame assembly
US8333090B2 (en) 2006-10-17 2012-12-18 Prysmian S.P.A. Process for manufacturing a low-attenuation optical fiber

Similar Documents

Publication Publication Date Title
EP0672895A4 (en) Liquid charging method and lens production method.
EP0315572A3 (en) Apparatus for measuring the diameter of a crystal
SE8202277L (en) SET AND APPARATUS FOR MONITORING THE DIAMETERS OF FIBERS
GB2110379B (en) Detecting flaws in the threaded end of an elongate member such as a pipe
JPS57200238A (en) Drawing of glass material
JPS56169136A (en) Manufacture of glass capillary tube
EP0319858A3 (en) Method of controlling floating zone
JPS57194802A (en) Material feeder of machine tool
ES8307548A1 (en) Method and apparatus for production of tubes.
GB1177444A (en) Infra Red Detecting Device
JPS6435326A (en) Temperature detector
JPS569231A (en) Manufacture of glass rod or pipe
JPS5645843A (en) Production of optical fiber base material
ES2026763A6 (en) Readily available outlet pipe for plastics petrol can - is attached to can by web, leaving pay for screw connection
GB2050650A (en) Glass ribbon with control method in float process
JPS6323142B2 (en)
GB1066102A (en) Glass tubing dimension control system
SU747830A1 (en) Method of automatic control of glass tube moulding by drawing
JPS57114341A (en) Thermal expansion compensating device for pole screw
JPS5723117A (en) Automatic measuring device for dynamic characteristic of process
JPS57135740A (en) Resin coating apparatus of optical fiber
JPS5768857A (en) Automatic original feed device
JPS5286349A (en) Method and apparatus for measurement of allowable bending radius of op tical glass fibers
JPS57206537A (en) Manufacture of external member of tripod type uniform flexible joint
JPS5596247A (en) Automatic centering method of cylindrical material