JPS5782139A - Drawing method of rod-like quartz glass - Google Patents
Drawing method of rod-like quartz glassInfo
- 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
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.
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)
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 |
-
1980
- 1980-11-12 JP JP15909980A patent/JPS5782139A/en active Pending
Cited By (2)
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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