CN203947025U - The extension apparatus of base glass material - Google Patents
The extension apparatus of base glass material Download PDFInfo
- Publication number
- CN203947025U CN203947025U CN201420237217.XU CN201420237217U CN203947025U CN 203947025 U CN203947025 U CN 203947025U CN 201420237217 U CN201420237217 U CN 201420237217U CN 203947025 U CN203947025 U CN 203947025U
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- CN
- China
- Prior art keywords
- glass material
- base glass
- central shaft
- heating part
- extension apparatus
- 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.)
- Expired - Lifetime
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- 239000000463 material Substances 0.000 title claims abstract description 157
- 239000006121 base glass Substances 0.000 title claims abstract description 156
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000005452 bending Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 13
- 230000001276 controlling effect Effects 0.000 description 9
- 239000011521 glass Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- -1 pottery Polymers 0.000 description 1
Abstract
The utility model provides a kind of extension apparatus of base glass material, on one side it can suppress the bending of base glass material, Yi Bian extend.The extension apparatus (10) of base glass material (G) utilizes heating part (14) heating base glass material (G), and to controlling upper chuck (21) and the lower chuck (22) of the support stick (R1, R2) being connected with the upper and lower ends of base glass material (G), velocity contrast is set, carry out extending vertically, in heating part, the downstream side of (14) has limited part (23), and this limited part (23) limits the position in the vertical face of the central shaft with heating part base glass material (G).
Description
Technical field
The present invention relates to extend the extension apparatus of base glass material.
Background technology
In JP2006-327898A (patent documentation 1), record a kind of extension method of base glass material, in the method, by the lower end of base glass material being utilized chuck etc. control parts, control, and chuck is moved downwards, thereby extend base glass material.
When extending vertically base glass material, there is the crooked problem of the base glass material that inhibition is extended as far as possible.There is many reasons in base glass material bending.Because extension apparatus tilts or is arranged on the position skew between the upper and lower scroll chuck on extension apparatus, thereby the central shaft of the base glass material in extending is from the central shaft skew of the well heater of extension apparatus.Thus, sometimes the central shaft of base glass material is vertically applied to excessive power, produce joggling part and form bending.Therefore, when extending vertically base glass material, Yi Bian preferably make the central shaft of base glass material and the central shaft of well heater consistent, Yi Bian extend base glass material.In patent documentation 1, when continuing to extend base glass material, by position in the face in the face vertical with bearing of trend to base glass material, detect, and to keeping the position of the grips of base glass material to adjust, thereby prevent joggling part.
Summary of the invention
The object of the invention is to, a kind of extension apparatus of base glass material is provided, on one side the extension apparatus of this base glass material can suppress to occur the bending of base glass material, Yi Bian extend base glass material.
In order to realize object, a kind of extension apparatus of base glass material is provided, it has: the heating part of hollow circle tube, in this heating part, insert base glass material and this base glass material is heated; Upper chuck, its one end in heating part outside with hot spots from, control the first support stick being connected with one end of base glass material and move; Lower chuck, its other end in heating part outside with hot spots from, control the second support stick being connected with the other end of base glass material, to the direction identical with upper chuck, with larger speed, move; And limited part, it is between the other end and lower chuck of heating part, and limit the position to base glass material in the vertical face of the central shaft with heating part.Also can make the central shaft of limited part and the central shaft of heating part roughly consistent.Here, " roughly consistent " represents that the distance of two central shafts is less than or equal to 1mm.
The extension apparatus of base glass material of the present invention, also can also have: tester, and it is arranged near limited part, and the position to base glass material in the vertical face of the central shaft with heating part is measured; And position control, it is by least one the position in upper chuck and lower chuck is moved, thereby can regulate the position of base glass material.Here, near " limited part " expression is positioned at the scope of the 30cm up and down of limited part position.Preferably limited part consists of carbon.In addition, can be also that limited part can be corresponding with the external diameter of base glass material, in the vertical face of the central shaft with heating part, regulate the contact position with base glass material.Also can be that limited part passes through spring device and can regulate contact position.
The effect of invention
According to the present invention, owing to thering is limited part between the other end in heating part and lower chuck, therefore, can warpage and can extend base glass material, so on one side can suppress to occur the bending of base glass material, Yi Bian extend base glass material.
Accompanying drawing explanation
Fig. 1 means that the extension apparatus of the base glass material that embodiments of the present invention relate to is the concept map of holding the state of base glass material.
Fig. 2 means the vertical view of the limited part that the extension apparatus of Fig. 1 has.
Fig. 3 means the concept map that utilizes the state that the extension apparatus of Fig. 1 extends base glass material.
Fig. 4 illustrates the concept map of definition of the amount of bow of base glass material.
Fig. 5 means the graphic representation of the amount of bow in embodiment 1.
Fig. 6 means the graphic representation of the amount of bow in embodiment 2.
Fig. 7 means the graphic representation of the amount of bow in the result of comparative example.
Embodiment
In the method for recording at patent documentation 1, from controlling base glass material to till once controlling this base glass material during, likely there is axle offset, there is the space of further improving.Below, with reference to accompanying drawing, the concrete example of the extension apparatus of the base glass material that embodiments of the present invention relate to is described.
Fig. 1 means that the extension apparatus 10 of the base glass material that embodiments of the present invention relate to is the concept map of holding the state of base glass material G.Extension apparatus 10 is for being pre-formed the extension base glass material G2 (with reference to Fig. 3) that extends into the diameter of the processing that is suitable for subsequent processing for the base glass material G1 before the extension of specified diameter downwards.
In the situation that base glass material G is for example glass base material for optical fiber, by the periphery of glass stick thering is a part for core and covering, piles up glass granules and carry out transparent glass, thereby form specified diameter.More specifically, at the two ends of glass stick, by heating and melting, connect under the state of support stick of quartzy system, pile up glass granules and form porous vitreum processed, obtain compound mother metal.Then, by this compound mother metal is heated to transparent glass, thereby obtain the base glass material G1 of specified diameter.
Extension apparatus 10 has the process furnace 12 that base glass material G1 is heated.Process furnace 12 has stove core barrel 13 cylindraceous and to be enclosed in the well heater 14 (example of heating part) of the hollow cylindrical that the mode of the periphery of stove core barrel 13 configures.By making well heater 14 heating, thus heating base glass material G1 and make it softening.
And extension apparatus 10 has upper chuck 21 and lower chuck 22, this upper chuck 21 is controlled the support stick R1 linking with the upper end of base glass material G1, can move up and down, and this lower chuck 22 is controlled the support stick R2 that the lower end with base glass material G1 links, and can move up and down.Upper chuck 21 and lower chuck 22 are set as can utilizing respectively not shown reciprocating mechanism and lifting independently, suitably to maintain the external diameter of base glass material G.
In addition, on upper chuck 21, be provided with can the face vertical at the central shaft with heating part in (left and right directions in Fig. 1) mobile position control.Utilize this position control, upper chuck 21 can movable glass mother metal G position in the vertical face of the central shaft with heating part, so that hold under the state of base glass material G at handle, the central shaft C (with reference to Fig. 2) of base glass material G is roughly consistent with the central shaft of well heater 14.On the other hand, the position of lower chuck 22 in the vertical face of the central shaft with heating part fixed.
In the downstream side of process furnace 12, be provided with limited part 23,23 pairs of this limited parts are heated stove 12 heating and the movement radially of the extension base glass material G2 that extracts out to process furnace 12 belows limits.Preferably limited part 23 consists of heat-resistant resins such as pottery, polyimide such as the higher carbon of thermotolerance, aluminum oxide etc.Especially, because carbon is soft, even if therefore contact with base glass material G also, without worrying, scratch base glass material G, so more preferably.
Fig. 2 means the concept map of the limited part 23 that extension apparatus 10 has.Limited part 23 has the 1st and controls parts 24 and the 2nd and control parts 25.The 1st controls the front end that parts 24 are arranged on the 1st arm member 24a, and the 1st arm member 24a is set to can be along extending radially moving freely of base glass material G2.In addition, the 2nd controls the front end that parts 25 are arranged on the 2nd arm member 25a, and the 2nd arm member 25a is set to can be along extending radially moving freely of base glass material G2.Thus, the 1st control that parts 24 and the 2nd control that parts 25 are set to can freely approach each other or away from.In addition, if utilize rack and pinion mechanism etc., both move to be in linkage set to control parts 24,25, can be under the state that central shaft is fixing to controlling both positions of parts 24,25, adjust and control base glass material G, therefore preferably.
Control the limited part 23 that parts 24,25 form by the 1st and the 2nd so that the central shaft of its central shaft and well heater 14 roughly consistent mode adjust.Therefore, by utilizing above-mentioned rack and pinion mechanism etc., make the 1st to control parts 24 and the 2nd and control that parts 25 approach and control extending base glass material G2, limited part 23 can so that the central shaft C of base glass material G and the central shaft of well heater 14 consistent mode roughly to extending the position of base glass material G2, limit.
The 1st controls parts 24 also can be arranged on via not shown spring device on the 1st arm member 24a.Similarly, the 2nd control parts 25 and also can be arranged on via not shown spring device on the 2nd arm member 25a.Thus, even if the external diameter of the base glass material G2 in extending changes, limited part 23 also can utilize spring device and change along with extending the external diameter of base glass material G2, to regulating with the contact position that extends base glass material G2.Therefore, when extending base glass material G2 and control, on one side can keep roughly consistent state of the central shaft of limited part 23 and the central shaft of well heater 14, Yi Bian to adjusting with the contact position of extension base glass material G2.
As shown in Figure 1, between well heater 14 and limited part 23, be provided with for measuring the position transducer (example of tester) 30 of the position of base glass material G in the vertical face of the central shaft with heating part.As position transducer 30, preferably when measuring, can not apply the contactless of power to base glass material G, for example can use the reflected light measurement device that has utilized laser beam.
Below, to having used the manufacture method of the extension base glass material G2 of extension apparatus 10 to describe.First, upper chuck 21 and lower chuck 22 are configured in starting position separately, and base glass material G1 is arranged in process furnace 12, utilize upper chuck 21 to control support stick R1 (operation is controlled in upper end).
Then, utilizing upper chuck 21 holding under the state of support stick R1, (mensuration operation) measured in the position by 30 couples of base glass material G1 of position transducer in the vertical face of the central shaft with heating part.If determine the position of base glass material G1, utilize on upper chuck 21 position control arranging, be adjusted to the central shaft C of base glass material G and limited part 23 the center of controlling, be the central shaft roughly consistent (adjustment operation) of well heater 14.In addition, also can be configured to, utilizing upper chuck 21 to control after support stick R1, not carry out the position adjustments of the position finding of 30 couples of base glass material G1 of position transducer and the base glass material G1 of position control, but utilize lower chuck 22 to control support stick R2.
Then, the support stick R2 lower end with base glass material G1 being linked utilizes the lower chuck 22 in the downstream side that is configured in process furnace 12 to control (lower end maintenance operation).Now, limited part 23 be configured in the support stick R2 that links from lower end with base glass material G1 away from starting position.
Utilizing lower chuck 22 to control after support stick R2, lower chuck 22 declined quickly than upper chuck 21, Yi Bian and utilize well heater 14 to heat, Yi Bian start to carry out the extension (initial extension process) of base glass material G1.Now, upper chuck 21 and lower chuck 22 position in the vertical face of the central shaft with heating part is fixed.
Fig. 3 means the concept map that utilizes the state that 10 couples of base glass material G of extension apparatus extend.After starting the extension of base glass material G1, support stick R2, behind the position of limited part 23, makes the 1st of limited part 23 control parts 24 and controls parts 25 close to the 2nd.Now, preferably utilize rack and pinion mechanism etc., both move in linkage to make to control parts 24,25.Thus, so that extend roughly consistent mode of the central shaft of base glass material G2 and the central shaft of well heater 14, utilize the position of 23 couples of extension base glass material G2 of limited part in the vertical face of the central shaft with heating part to limit (restriction operation).Finally, under the state that utilizes 23 couples of extension base glass material G2 of limited part to limit, lower chuck 22 is further declined, continue to extend (main extension process), form the extension base glass material G2 of specified diameter and specified length.
In addition, also can be in extending the process that base glass material G2 continues to extend, utilize position transducer 30 again to measure the position of extension base glass material G2 in the vertical face of the central shaft with heating part.In the situation that extend the central shaft of the position deviation limited part 23 of base glass material G2, can be by again the position control of upper chuck 21 being controlled, make to extend base glass material G2 and move along the left and right directions in Fig. 1, the central shaft that makes to extend base glass material G2 is roughly consistent with the central shaft of well heater 14 all the time.
Above, according to extension apparatus 10, there is limited part, this limited part is in the downstream side of well heater 14, make its central shaft roughly consistent with the central shaft of well heater 14, limit the position to base glass material G (extend base glass material G2) in the vertical face of the central shaft with heating part.Therefore, can prevent from producing joggling part on the base glass material G2 that utilizes extension apparatus 10 to extend, manufacture crooked less extension base glass material G2.
In addition, extension apparatus 10 has position transducer 30 and position control, this position transducer 30 is measured the position of base glass material G in the vertical face of the central shaft with heating part, and this position control is arranged on upper chuck 21, and the position of adjustable base glass material G.Utilize these, by before starting to extend base glass material G and in extension, suitably adjust the position of base glass material G, can be suppressed at more reliably and extend the upper joggling part that produces of base glass material G2.
In addition, according to extension apparatus 10, limited part 23 consists of carbon or pottery.Therefore, use thermotolerance higher, particularly carbon in the situation that, because carbon is soft, therefore, when extending base glass material G2 and limit, can prevent from forming cut to extending base glass material G2.
In addition, limit 23 pairs of positions of extending the central shaft of base glass material G2 of limited part, utilizes spring device etc., the adjustable contact position of controlling parts 24,25 and extending base glass material G2.Therefore, even for example in the situation that the external diameter of the base glass material G2 in extension attenuate, can not affect its external diameter change yet, can follow extend base glass material G2 external diameter change and to regulating with the contact position that extends base glass material G2, therefore, can prevent from reliably extending the position skew of base glass material G2.And, can not apply the superfluous hold of controlling parts 24,25 to extending base glass material G2, can enough suitable power control extending base glass material G2.
(embodiment 1)
After the two ends of the base glass material of external diameter 80mm connect support stick and utilize upper and lower scroll chuck to control, carried out the operation that utilizes heater heats and extend to the base glass material of external diameter 40mm.Well heater downstream side at extension apparatus, setting makes the center of controlling become the limited part of the central shaft of well heater, after starting extension, if the support stick being connected with the bottom of base glass material has passed through the position of limited part, utilize limited part to limit the base glass material in extending on one side, Yi Bian continue to extend.For the base glass material after extending, as shown in Figure 4, measured the amount of bow d/L of every 1m length.This extension operation has been carried out to 20 continuously.Its result, as shown in Figure 5, the amount of bow of extending base glass material is 0.8mm to the maximum, and all the average amount of bow of sample is 0.5mm.
(embodiment 2)
After the two ends of the base glass material of external diameter 80mm connect support stick and utilize upper and lower scroll chuck to control, carried out the operation that utilizes heater heats and extend to the base glass material of external diameter 40mm.In the well heater downstream side of extension apparatus, the central shaft consistent limited part roughly make the center of controlling and well heater is set, and, between well heater and limited part, as position transducer, be provided with laser sensor.After in base glass material handle is held in to upper chuck, to the position of the bottom of base glass material, utilize laser sensor to measure, utilization is arranged on the position control on upper chuck so that the center of controlling of the position of base glass material bottom and limited part roughly consistent mode regulate.Then, heat base glass material and start to extend.If the support stick being connected with the bottom of base glass material has passed through the position of limited part, Yi Bian utilize limited part to limit the base glass material in extending, Yi Bian continue to extend.For the base glass material after extending, measured the amount of bow d/L of every 1m length.This extension operation has been carried out to 20 continuously.Its result, as shown in Figure 6, the amount of bow of extending base glass material is 0.5mm to the maximum, and all the average amount of bow of sample is 0.3mm.
(comparative example)
After the two ends of the base glass material of external diameter 80mm connect support stick and utilize upper and lower scroll chuck to control, carried out the operation that utilizes heater heats and extend to the base glass material of external diameter 40mm.Now, different from embodiment 1 and embodiment 2, there is no to use limited part or position control for adjusting extending the position of base glass material in the vertical face of the central shaft with heating part.For the base glass material after extending, measured the amount of bow d/L of every 1m length.This extension operation has been carried out to 20 continuously.Its result, as shown in Figure 7, the amount of bow of extending base glass material is 1.8mm to the maximum, and all the average amount of bow of sample is 1.0mm.
According to foregoing, knownly compare with not using the comparative example of limited part, in having used the embodiment 1 of limited part, the amount of bow of extending base glass material reduces.In addition, known in having used the embodiment 2 of limited part, tester and position control, can further suppress to extend the amount of bow of base glass material.
Above, describe the present invention in detail and with reference to specific embodiment, but for a person skilled in the art, obviously can under the prerequisite that does not depart from spirit of the present invention, scope, carry out various changes or correction.In addition, the quantity of the structure unit of above-mentioned explanation, position, shape etc. are not limited to above-mentioned embodiment, variable more suitable quantity, position, shape etc. when enforcement is of the present invention.For example, by position control is arranged on lower chuck 22, lower chuck 22 is moved horizontally, also can make the central shaft C of base glass material G and the central shaft of limited part 23 roughly consistent.
Claims (6)
1. an extension apparatus for base glass material, it has:
The heating part of hollow circle tube is inserted base glass material and this base glass material is heated in this heating part;
Upper chuck, its one end in described heating part outside with described hot spots from, control the first support stick being connected with one end of described base glass material and move;
Lower chuck, its other end in described heating part outside with described hot spots from, control the second support stick being connected with the other end of described base glass material, to the direction identical with described upper chuck, with larger speed, move; And
Limited part, between its other end in described heating part and described lower chuck, limit the position to described base glass material in the vertical face of the central shaft with described heating part.
2. the extension apparatus of base glass material according to claim 1,
The central shaft of described limited part is consistent with the central shaft of described heating part.
3. the extension apparatus of base glass material according to claim 1 and 2, also has:
Tester, it is arranged near described limited part, and the position to described base glass material in the vertical face of the central shaft with described heating part is measured; And
Position control, it is by least one the position in described upper chuck and described lower chuck is moved, thereby can regulate the position of described base glass material.
4. the extension apparatus of base glass material according to claim 1 and 2,
Described limited part consists of carbon.
5. the extension apparatus of base glass material according to claim 1 and 2,
Described limited part can be corresponding with the external diameter of described base glass material, regulates the contact position with described base glass material in the vertical face of the central shaft with described heating part.
6. the extension apparatus of base glass material according to claim 5,
Described limited part can regulate described contact position by spring device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013099847A JP6136554B2 (en) | 2013-05-10 | 2013-05-10 | Glass base material stretching apparatus and glass base material manufacturing method |
| JP2013-099847 | 2013-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203947025U true CN203947025U (en) | 2014-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420237217.XU Expired - Lifetime CN203947025U (en) | 2013-05-10 | 2014-05-09 | The extension apparatus of base glass material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6136554B2 (en) |
| CN (1) | CN203947025U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973775B (en) * | 2015-06-04 | 2017-03-29 | 青海中利光纤技术有限公司 | Preform suspension arrangement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0840741A (en) * | 1994-08-01 | 1996-02-13 | Yazaki Corp | Method for drawing preform of optical fiber and machine for drawing preform of optical fiber |
| JPH09202636A (en) * | 1996-01-19 | 1997-08-05 | Sumitomo Electric Ind Ltd | Device for drawing optical fiber base material |
| JP2004035404A (en) * | 1997-03-25 | 2004-02-05 | Furukawa Electric Co Ltd:The | Electric furnace drawing method for glass preform for optical fiber and drawing device |
| JPH10310443A (en) * | 1997-05-09 | 1998-11-24 | Sumitomo Electric Ind Ltd | Stretching device for preform for fiber |
| JP2011140412A (en) * | 2010-01-06 | 2011-07-21 | Fujikura Ltd | Glass preform drawing apparatus and method for drawing glass preform |
| JP5674160B2 (en) * | 2012-05-02 | 2015-02-25 | 信越化学工業株式会社 | Drawing method of glass base material |
-
2013
- 2013-05-10 JP JP2013099847A patent/JP6136554B2/en active Active
-
2014
- 2014-05-09 CN CN201420237217.XU patent/CN203947025U/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| JP6136554B2 (en) | 2017-05-31 |
| JP2014218406A (en) | 2014-11-20 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |