CN201952355U - Optical fiber prefabricated bar with clamped article - Google Patents
Optical fiber prefabricated bar with clamped article Download PDFInfo
- Publication number
- CN201952355U CN201952355U CN2011200009722U CN201120000972U CN201952355U CN 201952355 U CN201952355 U CN 201952355U CN 2011200009722 U CN2011200009722 U CN 2011200009722U CN 201120000972 U CN201120000972 U CN 201120000972U CN 201952355 U CN201952355 U CN 201952355U
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- CN
- China
- Prior art keywords
- optical fiber
- preform
- gripped object
- bar
- hole
- 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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- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
An optical fiber prefabricated bar with a clamped article relates to the technical field of optical fiber manufacturing. In the utility model, the clamped article and the optical fiber prefabricated bar are fixedly connected. The optical fiber prefabricated bar with the clamped article is characterized in that the clamped article is provided with a transverse through hole, and the axis of the through hole is vertical to that of the optical fiber prefabricated bar. The benefits are as follows: when a quartz bar sides down due to different thermal expansion factors, the pin can prevent the quartz bar from sliding down and the components and the prefabricated bar in a graphite furnace are prevented from being damaged.
Description
Technical field
The utility model relates to the optic fibre manufacturing technology field.
Background technology
At present, optical fiber mainly is the preparation by prefabricated rods, at high temperature draws to optical fiber again.The prefabricated rods diameter less than 200mm length during less than 3000mm the optical fiber manufacturing generally adopt the silica tube welding on prefabricated rods, and be clamped on the silica tube and prefabricated rods sent into the wire drawing of graphite furnace internal heating.Development and raising along with optic fibre manufacturing technology, for reducing production costs, preform diameter and length are increasing, the weight of corresponding its prefabricated rods is also increasing, the wire drawing time is also more and more longer, manufacturers progressively adopts quartz pushrod to replace silica tube, because the heat seal strength of quartz pushrod and prefabricated rods is much larger than the heat seal strength of silica tube and prefabricated rods.
But because quartz pushrod is not easy heat radiation than silica tube, the wire drawing time of single prefabricated rods increases.When graphite furnace heating prefabricated rods, heat is transmitted on the quartz pushrod and by quartz pushrod by prefabricated rods and is transmitted on the clamping device, and the material that clamping device is used is a steel.Because the thermal expansivity of steel is 20～100 ℃: 11.59e-6/ ℃
20～200℃：12.32e-6/℃
20～300℃：13.09e-6/℃
20～400℃：13.71e-6/℃
20～500℃：14.18e-6/℃
20～600℃：14.67e-6/℃
And quartzy thermal expansivity is that 5.5e-7/ ℃ of thermal expansivity between the two do not match, when temperature variation when heating up (cooling or) cause the landing in the anchor clamps of quartz pushrod or silica tube to cause the financial losses such as damage of graphite member and prefabricated rods in the graphite furnace easily.As Fig. 1,2.Therefore design and a kind ofly novel can prevent that the prefabricated rods of landing and the combination of quartz pushrod silica tube are necessary easily because of difference of thermal expansion coefficients.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of preform that has gripped object at the deficiency of above-mentioned prior art existence, can solve the problem of prefabricated rods landing.
The technical scheme that the utility model solve the technical problem employing is, the preform that has gripped object, gripped object is fixedlyed connected with preform, and gripped object is provided with horizontal through hole, the axis of through hole and the axis normal of preform.
Described being added, hold thing and be shaped as cylinder or cylindrical.Described through hole is arranged at the end of gripped object.Described gripped object is a quartz pushrod.Described through hole internal diameter is 2 millimeters to 10 millimeters.
Using method of the present utility model is: before anchor clamps clamping quartz pushrod or behind the clamping quartz pushrod pin of a sufficient intensity inserted in the hole of above-mentioned quartz pushrod with holes, this pin is positioned over the anchor clamps upper surface.The beneficial effects of the utility model are that this pin can stop quartz pushrod to glide when causing the quartz pushrod landing because of the thermal expansivity difference, avoids the damage of graphite furnace inner part and prefabricated rods.
The utility model is described in further detail below in conjunction with description of drawings and embodiment.
Description of drawings
Fig. 1 is the structural representation of existing fiber prefabricated rods.
Fig. 2 causes preform structural representation during landing in anchor clamps because of difference of thermal expansion coefficients.
Fig. 3 is the local enlarged diagram of A part of Fig. 2.
Fig. 4 is a structural representation of the present utility model.
Fig. 5 is that the utility model stops the synoptic diagram that causes preform landing in the anchor clamps because of difference of thermal expansion coefficients.
Fig. 6 is the local enlarged diagram of B part of Fig. 5.
Embodiment
Referring to Fig. 3, Fig. 4, the utility model comprise quartz pushrod 2, preform 3, and quartz pushrod 2 is a gripped object.
Gripped object 2 of the present utility model is fixedlyed connected with preform 3, and gripped object 3 is provided with horizontal through hole, the axis normal of the axis of through hole and preform 3.Described being added, hold thing and be shaped as cylinder or cylindrical.Described through hole is arranged at the end of gripped object.Described gripped object is a quartz pushrod.Described through hole internal diameter is 2 millimeters to 10 millimeters.
Anchor clamps 1 are clamped on the quartz pushrod 2, pin 4 passes hole on the quartz pushrod 2 and is positioned on the anchor clamps 1 on the plane, and when because the thermal expansivity difference causes quartz pushrod 2 and preform 3 in anchor clamps 1 during landing, because be inserted with pin 4 on the quartz pushrod with holes 2, pin 4 can be stuck on the anchor clamps 1 on the plane and stop the downglide motion of prefabricated rods 3 and quartz pushrod 2.
Claims (5)
1. the preform that has gripped object, gripped object (2) is fixedlyed connected with preform (3), it is characterized in that, and gripped object (2) is provided with horizontal through hole, the axis normal of the axis of through hole and preform (3).
2. the preform that has gripped object as claimed in claim 1 is characterized in that, described being added holds thing (2) and be shaped as cylinder or cylindrical.
3. the preform that has gripped object as claimed in claim 1 is characterized in that described through hole is arranged at the end of gripped object (2).
4. the preform that has gripped object as claimed in claim 1 is characterized in that, described gripped object (2) is a quartz pushrod.
5. the preform that has gripped object as claimed in claim 1 is characterized in that, described through hole internal diameter is 2 millimeters to 10 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200009722U CN201952355U (en) | 2011-01-05 | 2011-01-05 | Optical fiber prefabricated bar with clamped article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200009722U CN201952355U (en) | 2011-01-05 | 2011-01-05 | Optical fiber prefabricated bar with clamped article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201952355U true CN201952355U (en) | 2011-08-31 |
Family
ID=44496477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200009722U Expired - Lifetime CN201952355U (en) | 2011-01-05 | 2011-01-05 | Optical fiber prefabricated bar with clamped article |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201952355U (en) |
-
2011
- 2011-01-05 CN CN2011200009722U patent/CN201952355U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |
|
| CX01 | Expiry of patent term |