CN103739193B - A kind of production method of optical fiber preform conical head - Google Patents
A kind of production method of optical fiber preform conical head Download PDFInfo
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- CN103739193B CN103739193B CN201310683074.5A CN201310683074A CN103739193B CN 103739193 B CN103739193 B CN 103739193B CN 201310683074 A CN201310683074 A CN 201310683074A CN 103739193 B CN103739193 B CN 103739193B
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Abstract
The present invention relates to a kind of production method of optical fiber preform conical head, comprising: select a preform residue conehead, it is with tail rod or tail pipe, and this optical fiber prefabricating rod outside diameter is n; Residue conehead is cut away pointed portion from diameter m, and m is the diameter of auxiliary quartz pushrod; Being clamped on the chuck of two ends with the preform residue conehead of tail rod or tail pipe and auxiliary quartz pushrod, after calcination is softening, dock cooling; The joint remaining conehead from tail rod or tail pipe and preform cuts; Be the preform of n external diameter and be clamped on the chuck of two ends with the preform residue conehead of auxiliary quartz pushrod, calcination is to docking after softening; Source center is aimed at the docking port heating of preform residue conehead and auxiliary quartz pushrod, chuck moves round about, carries out drawing conehead, makes residue conehead form streamline conehead, naturally cooling; Cut in a certain outer radius of streamline conehead, just define a preform with streamline conehead.
Description
Technical field
The present invention relates to preform technical field, especially relate to a kind of production method of optical fiber preform conical head.
Background technology
The wire drawing of preform is produced and is mainly heated by preform with fiber drawing furnace, make preform under melting state from lower end stretched optical fiber.When wire drawing starts, form quartz to make quartz pushrod lower end to stick together, pull out and there is the sandwich layer of preform and the acceptable splice of covering, and make the sandwich layer of optical fiber identical with covering ratio with the sandwich layer of preform with the ratio of covering, before preform carries out wire drawing, produce streamlining conehead at the initiating terminal of preform drawing.
The method producing streamline conehead in prior art on preform uses preform and a quartz pushrod, or two preforms, beading lathe heats, dock after the melting of two rod docking end faces, then joint is heated, under heating condition, by moving fiber prefabricated rods or quartz pushrod, preform is produced streamline conehead.These two kinds of methods all also exist because optical fiber prefabricating rod outside diameter is comparatively large, and the operation of pull-out streamline conehead is very difficult, needs to pull off a part of preform simultaneously, causes the waste of preform, waste about 2 ~ 6 kilograms.In addition, in order to make preform drawing abundant, connecing one section of tail rod (or tail pipe) at preform end, playing assisted suspension effect.But in order to pull out acceptable splice, and ensure that optical fiber quartz pushrod end external diameter does not change, to prevent stopping property from occurring anomalous effects wire drawing, usual preform drawing finally all remains a conehead no longer wire drawing.This conehead about has 3 ~ 8 kilograms.
Summary of the invention
The invention provides a kind of production method of optical fiber preform conical head, for solving operational difficulty when preform produces streamline conehead and the waste of preform, remaining for wire drawing preform residue conehead being utilized again simultaneously.
The production method of a kind of optical fiber preform conical head of the present invention, comprises the steps:
The preform residue conehead that step (1) selects a preform drawing to complete, this preform residue conehead is with tail rod or tail pipe, and wherein this optical fiber prefabricating rod outside diameter is n;
Step (2) cuts away pointed portion preform residue conehead from diameter m, and wherein m is the diameter of auxiliary quartz pushrod;
Step (3) is clamped in the preform residue conehead of or the tail pipe excellent with tail after cutting and auxiliary quartz pushrod on the two ends chuck of beading lathe, to both end face preheatings, and cooling after calcination to the softening rear docking of quartz;
The cooled entirety rod with tail rod or tail pipe, preform residue conehead and auxiliary quartz pushrod of step (4), the joint remaining conehead from tail rod or tail pipe and preform cuts;
Step (5) needs the external diameter producing conehead to be the preform of n ' one and is clamped on the chuck of beading lathe two ends with the preform residue conehead of auxiliary quartz pushrod, to both preheatings, and docking after calcination is softening to quartz;
Step (6) heats the docking port that source center aims at preform residue conehead and auxiliary quartz pushrod, movable glass welding lathe dog moves round about simultaneously, carry out drawing conehead, make former preform remain conehead and shrink formation streamline conehead, naturally cooling;
Step (7) glass cutter cuts in a certain outer radius of streamline conehead, just defines a preform with streamline conehead.
Further, described preform is solid core fibres prefabricated rods.
Further, described needs the optical fiber prefabricating rod outside diameter producing conehead identical or close with the former optical fiber prefabricating rod outside diameter of preform residue conehead, and difference is not more than 2mm.
Further, the diameter of described auxiliary quartz pushrod is 50 ~ 80mm.
Further, the cutting of described quartz pushrod, cut surface is all perpendicular to the axis of quartz pushrod.
Further, after described quartz cutting, cut surface all needs to clean with alcohol, and deionized water rinsing and nitrogen dry up.
Further, described to quartz pushrod preheating refer to thermal source not just to quartz pushrod heating, warm up time is 15 ~ 25 minutes.
The technique effect that the present invention obtains is as follows:
Instant invention overcomes and draw conehead to produce difficulty because preform diameter causes greatly, greatly improve the efficiency of production optical fiber preform conical head.
The present invention takes full advantage of preform drawing residue conehead, substantially increases the wire drawing utilization ratio of preform, improves raw material availability.
The present invention has stopped the phenomenon that production optical fiber preform conical head must pull off a part thereon, and optical fiber preform conical head is utilized again.
The optical fiber preform conical head that the present invention produces, owing to producing on former preform residue conehead, makes the taper unification more of optical fiber preform conical head, makes conehead taper have duration.
Accompanying drawing explanation
Fig. 1 is the Production Flow Chart schematic diagram of the preform with streamline conehead described in invention.
Embodiment
Below in conjunction with accompanying drawing citing, the present invention is specifically described.
In the present invention, the production method of the conehead of preform is:
Select one with the preform residue conehead needing to produce the identical or close wire drawing of the optical fiber prefabricating rod outside diameter of conehead and complete, preform residue conehead will with tail rod (or tail pipe), preform is remained conehead and excise pointed portion from the position identical with auxiliary quartz pushrod diameter, auxiliary quartz pushrod diameter is as far as possible little.The residue conehead of the preform with tail rod (or tail pipe) after cutting and auxiliary quartz pushrod are clamped in respectively the two ends of beading lathe, light burner hearth heat source, moving fiber prefabricated rods residue conehead and auxiliary quartz pushrod carry out preheating gradually, slowly enter the high-temperature zone of burner hearth thermal source, both dock after concentrating and being heated to softening temperature to its binding surface by last thermal source, close fire cooling after docking.Cooled being placed on taking over the baton is cut on lathe, cuts from the joint of tail rod (or tail pipe) and preform residue conehead, retains the preform residue conehead with auxiliary quartz pushrod.Smooth for end face is needed the preform of production conehead and remain with the preform of auxiliary quartz pushrod the two ends that conehead is clamped in beading lathe, light burner hearth heat source, moving fiber prefabricated rods and the preform residue conehead preheating gradually with auxiliary quartz pushrod, slowly enter the high-temperature zone of burner hearth thermal source, last thermal source is concentrated and is heated needs joint, dock to softening temperature, docking port burner hearth heat source high temp district being aimed at preform residue conehead and auxiliary quartz pushrod heats, movable glass welding lathe dog moves round about simultaneously, carry out drawing conehead, make former preform remain conehead and shrink the new streamline conehead of formation one, close heat source, stop the chuck of movable glass welding lathe, stop drawing conehead, cool, cool rear glass cutter to cut at new popular conehead external diameter 10 ~ 20mm place, just define a preform with conehead.
Preform of the present invention is solid core fibres prefabricated rods.
The optical fiber prefabricating rod outside diameter producing conehead that needs of the present invention is identical or close with the former optical fiber prefabricating rod outside diameter of preform residue conehead, and external diameter difference is determined according to preform drawing technology, and general difference is not more than 2mm.
Auxiliary quartz pushrod diameter of the present invention is 50 ~ 80mm.
The cutting of quartz pushrod of the present invention, cut surface is all perpendicular to the axis of quartz pushrod.
After quartz cutting of the present invention, cut surface all needs to clean with alcohol, and deionized water rinsing and nitrogen dry up.
Of the present invention to quartz pushrod gradually preheating refer to thermal source not just to quartz pushrod heating, about 15 ~ 25 minutes warm up time.
Specific examples 1 and example 2 as follows:
Example 1 is the production of external diameter 150mm specification solid core fibres prefabricated rods conehead.(external diameter 150mm size optical fiber prefabricated rods external diameter is generally (150 ± 2) mm.）
The preform residue conehead 1 selecting an external diameter 150mm size optical fiber prefabricated stick drawn wire to complete, preform residue conehead wants magnetic tape trailer rod (or tail pipe) 2;
External diameter 150mm size optical fiber prefabricated stick drawn wire residue conehead 1 is cut away pointed portion from diameter 60mm;
Quartz pushrod 3 is assisted to be clamped on the two ends chuck of beading lathe the residue conehead 1 of the 150mm size optical fiber prefabricated rods with tail rod (or tail pipe) 2 after cutting and diameter 60mm, light after burner hearth thermal source the preheating gradually of both end faces, both slowly enter source center, and calcination to quartz softens rear docking, closes thermal source, quartzy product naturally cooling;
Cooled entirety rod of assisting quartz pushrod 3 with tail rod (or tail pipe) 2, preform residue conehead 1 and diameter 60mm, cut from the joint of tail rod (or tail pipe) and preform residue conehead, preform residue conehead with auxiliary quartz pushrod continues to use, and tail rod (or tail pipe) can recycle;
One is needed the external diameter 150mm size optical fiber prefabricated rods 4 of production conehead and is clamped on the chuck of beading lathe two ends with the preform residue conehead of auxiliary quartz pushrod, light to both preheatings gradually after burner hearth thermal source, both enter source center calcination softening to quartz after docking;
The docking port of quartz pushrod is assisted to heat the source center of burner hearth aligning preform residue conehead and diameter 60mm, movable glass welding lathe dog moves round about simultaneously, carry out drawing conehead, make former preform remain conehead and shrink formation streamline conehead, close heat source, stop movable glass welding lathe dog, namely stop drawing conehead, quartz product naturally cooling, cut at streamline conehead external diameter 10 ~ 20mm place with glass cutter, just define a preform 5 with streamline conehead.
Example 2 is the production of external diameter 180mm specification solid core fibres prefabricated rods conehead.(external diameter 180mm size optical fiber prefabricated rods external diameter is generally at (180 ± 2) mm.）
The preform residue conehead 1 selecting an external diameter 180mm size optical fiber prefabricated stick drawn wire to complete, preform residue conehead wants magnetic tape trailer rod (or tail pipe) 2;
External diameter 180mm size optical fiber prefabricated stick drawn wire residue conehead 1 is cut away pointed portion from diameter 70mm;
Quartz pushrod 3 is assisted to be clamped in the two ends of beading lathe the residue conehead 1 of the 180mm size optical fiber prefabricated rods with tail rod (or tail pipe) 2 after cutting and diameter 70mm, light after burner hearth thermal source the preheating gradually of both end faces, both are slowly near source center, and calcination to quartz softens rear docking, closes thermal source, quartzy product naturally cooling;
Cooled entirety rod of assisting quartz pushrod 3 with tail rod (or tail pipe) 2, preform residue conehead 1 and diameter 70mm, cut from the joint of tail rod (or tail pipe) and preform residue conehead, preform residue conehead with auxiliary quartz pushrod continues to use, and tail rod (or tail pipe) can recycle;
Need the external diameter 180mm size optical fiber prefabricated rods 4 of production conehead one and be clamped in beading lathe two ends with the preform residue conehead of auxiliary quartz pushrod, light preheating gradually after burner hearth thermal source, both enter high-temperature zone calcination softening to quartz after docking;
The docking port of quartz pushrod is assisted to heat the source center of burner hearth aligning preform residue conehead and diameter 70mm, movable glass welding lathe dog moves round about simultaneously, carry out drawing conehead, make former preform remain conehead and shrink formation streamline conehead, close heat source, stop movable glass welding lathe dog, namely stop drawing conehead, quartz product carry out naturally cooling, cut at streamline conehead external diameter 10 ~ 20mm place with glass cutter, just define a preform 5 with streamline conehead.
Claims (7)
1. a production method for optical fiber preform conical head, is characterized in that comprising the following steps:
Preform residue conehead (1) that step (1) selects a preform drawing to complete, this preform residue conehead is with tail rod or tail pipe (2), and wherein this optical fiber prefabricating rod outside diameter is n;
Step (2) remains conehead (1) preform and cuts away pointed portion from diameter m, and wherein m is the diameter of auxiliary quartz pushrod (3);
Step (3) is clamped in preform residue conehead (1) of or the tail pipe (2) excellent with tail after cutting and auxiliary quartz pushrod (3) on the two ends chuck of beading lathe, to both end face preheatings, docks cooling after calcination is softening to quartz;
The cooled entirety rod with tail rod or tail pipe (2), preform residue conehead (1) and auxiliary quartz pushrod (3) of step (4), the joint remaining conehead (1) from tail rod or tail pipe (2) and preform cuts;
Step (5) needs the external diameter producing conehead to be the preform (4) of n ' one and is clamped on the chuck of beading lathe two ends with preform residue conehead (1) of auxiliary quartz pushrod, to both preheatings, and docking after calcination is softening to quartz;
Step (6) heats the docking port that source center aims at preform residue conehead (1) and auxiliary quartz pushrod (3), movable glass welding lathe dog moves round about simultaneously, carry out drawing conehead, make former preform remain conehead and shrink formation streamline conehead, naturally cooling;
Step (7) glass cutter cuts in a certain outer radius of streamline conehead, just defines a preform with streamline conehead (5).
2. method according to claim 1, is characterized in that: described preform is solid core fibres prefabricated rods.
3. method according to claim 1, is characterized in that: described needs the optical fiber prefabricating rod outside diameter producing conehead identical or close with the former optical fiber prefabricating rod outside diameter of preform residue conehead, and difference is not more than 2mm.
4. method according to claim 1, is characterized in that: the diameter of described auxiliary quartz pushrod is 50 ~ 80mm.
5. method according to claim 1, is characterized in that: the cutting of described quartz pushrod, and cut surface is all perpendicular to the axis of quartz pushrod.
6. method according to claim 5, is characterized in that: after described quartz cutting, and cut surface all needs to clean with alcohol, and deionized water rinsing and nitrogen dry up.
7. method according to claim 1, is characterized in that: described to quartz pushrod preheating refer to thermal source not just to quartz pushrod heating, warm up time is 15 ~ 25 minutes.
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| CN201310683074.5A CN103739193B (en) | 2013-12-16 | 2013-12-16 | A kind of production method of optical fiber preform conical head |
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| CN201310683074.5A CN103739193B (en) | 2013-12-16 | 2013-12-16 | A kind of production method of optical fiber preform conical head |
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| CN103739193B true CN103739193B (en) | 2016-01-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271702A (en) * | 2015-10-26 | 2016-01-27 | 江苏亨通光电股份有限公司 | Tapering method for optical fiber preform |
| KR102425328B1 (en) | 2016-05-03 | 2022-07-25 | 헤래우스 쿼츠 노쓰 아메리카 엘엘씨 | Elongation method and preform for producing an optical glass component |
| CN106365434B (en) * | 2016-08-26 | 2018-11-30 | 江苏亨通光导新材料有限公司 | A kind of preparation method of optical fiber preform conical head |
| CN112239324B (en) * | 2020-10-23 | 2022-09-20 | 杭州富通通信技术股份有限公司 | Method for processing preform and optical fiber |
| CN113998880B (en) * | 2021-10-08 | 2023-02-24 | 富通集团（嘉善）通信技术有限公司 | Manufacturing method of core rod, preform rod and optical fiber |
Citations (3)
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| CN101014545A (en) * | 2004-08-14 | 2007-08-08 | 赫罗伊斯·坦尼沃有限责任公司 | Elongation method for prpoducing an optical component of quartz glass and preliminary product suited for performing the method |
| CN102508335A (en) * | 2011-11-11 | 2012-06-20 | 烽火通信科技股份有限公司 | Optical taper type high-power coupler and manufacturing method thereof |
| CN102923941A (en) * | 2012-11-29 | 2013-02-13 | 长飞光纤光缆有限公司 | Method for tapering optical fiber preform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3714571B2 (en) * | 1996-12-24 | 2005-11-09 | 信越石英株式会社 | Optical fiber preform and method of manufacturing optical fiber using the preform |
| FI114860B (en) * | 2002-06-13 | 2005-01-14 | Photonium Oy | Fiber blank, blank tip and method of making the fiber |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014545A (en) * | 2004-08-14 | 2007-08-08 | 赫罗伊斯·坦尼沃有限责任公司 | Elongation method for prpoducing an optical component of quartz glass and preliminary product suited for performing the method |
| CN102508335A (en) * | 2011-11-11 | 2012-06-20 | 烽火通信科技股份有限公司 | Optical taper type high-power coupler and manufacturing method thereof |
| CN102923941A (en) * | 2012-11-29 | 2013-02-13 | 长飞光纤光缆有限公司 | Method for tapering optical fiber preform |
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