CN219621081U - Traction device for stretching optical fiber preform - Google Patents
Traction device for stretching optical fiber preform Download PDFInfo
- Publication number
- CN219621081U CN219621081U CN202320246490.8U CN202320246490U CN219621081U CN 219621081 U CN219621081 U CN 219621081U CN 202320246490 U CN202320246490 U CN 202320246490U CN 219621081 U CN219621081 U CN 219621081U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- traction
- fiber preform
- wheels
- stretching
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The utility model relates to the technical field of optical fiber drawing, in particular to a traction device for stretching an optical fiber preform, which comprises a heating furnace, an optical fiber parent metal, a supporting plate, a traction wheel set and a driving mechanism, wherein annular air bags are coaxially sleeved on the outer sides of two traction wheels, traction surfaces are formed at the positions where the two annular air bags are mutually attached, and the optical fiber preform is clamped by the traction surfaces and is pulled downwards; through setting up the soft annular gasbag of texture in the traction wheel outside for the position department of mutual extrusion laminating of two annular gasbags is formed with and lasts the downward movement, and the motion direction and the unanimous traction surface of optical fiber perform tensile direction, through traction surface centre gripping optical fiber perform and last downward traction, traction surface and optical fiber perform be the face contact, and area of contact is great, makes the pressure that the unit area of optical fiber perform surface born little, and optical fiber perform surface is difficult for damaging.
Description
Technical Field
The utility model relates to the technical field of optical fiber drawing, in particular to a traction device for stretching an optical fiber preform.
Background
The optical fiber preform is a silica glass rod having a specific refractive index profile and used for manufacturing an optical fiber (optical fiber for short), and the preform generally has a diameter of several millimeters to several tens of millimeters, however, when a rod having an outside diameter average value of more than 100mm is drawn, it is difficult to make a hot zone air flow reach a desired laminar flow condition and uniformly heat the preform, so that the control of a drawing process and quality is not facilitated, and it is necessary to draw a large-diameter preform into a smaller-diameter preform by using a drawing technique, for example, first drawing a large-diameter silica optical fiber rod into a rod having a typical diameter of 10 to 80mm, so as to facilitate the stable control of a subsequent drawing process.
The stretching traction of the optical fiber preform adopts one or more groups of hard traction wheels to clamp the optical fiber preform in a stretching state and draw downwards, because the traction wheels and the optical fiber preform are round, when the hard traction wheels are in contact with the optical fiber preform, the contact area is small, so that the pressure of the contact position of the optical fiber preform and the traction wheels is large, and in the process of stretching the optical fiber preform into the optical fiber preform with smaller diameter and a diameter of a few millimeters, due to the smaller diameter, the surface of the optical fiber preform is easy to generate pits or cracks, thereby influencing the production quality of the subsequent optical fiber drawing.
Disclosure of Invention
The utility model provides a traction device for stretching an optical fiber preform, which comprises: the optical fiber preform is heated by the heating furnace to form an optical fiber preform, and a supporting plate is arranged below the heating furnace;
the traction device further includes:
the traction wheel set comprises two traction wheels which are symmetrically arranged, and the two traction wheels are both rotationally connected to the supporting plate;
the driving mechanism is arranged on the supporting plate and used for driving the two traction wheels to synchronously rotate in opposite rotation directions;
the optical fiber preform is characterized in that annular air bags are coaxially sleeved on the outer sides of the traction wheels, under the driving of the traction wheels, continuous downward movement is formed at the position where the two annular air bags are mutually attached, and a traction surface with the movement direction being consistent with the stretching direction of the optical fiber preform is clamped by the traction surface and is continuously pulled downwards.
Preferably, the side surface of the annular air bag is provided with an annular groove for increasing the contact area with the optical fiber preform.
Preferably, the cross section of the annular groove is circular arc.
Preferably, the traction wheel is provided with an air tap for adjusting the internal pressure of the annular air bag, and one end of the air tap extends to the inside of the annular air bag.
Preferably, the driving mechanism comprises a rotating shaft, a transmission gear set and a driving motor, the two traction wheels are coaxially fixed with the rotating shaft, the traction wheels are rotatably connected with the supporting plate through the rotating shaft, the driving motor is installed on the supporting plate, the output end of the driving motor is fixedly connected with one of the rotating shafts and used for driving the rotating shafts to rotate, and the two rotating shafts synchronously rotate through the transmission gear set and have opposite rotating directions.
Preferably, the transmission gear set comprises two gears meshed with each other, and the two gears are coaxially fixed on the two rotating shafts respectively.
Preferably, the driving motor is a stepping motor.
Preferably, two positioning wheel sets are installed on the supporting plate and are respectively positioned in the input direction and the output direction of the traction wheel set.
Preferably, the positioning wheel group comprises two symmetrically arranged positioning wheels, and the two positioning wheels are both rotationally connected to the supporting plate.
Preferably, a diameter gauge for measuring the diameter of the optical fiber preform is mounted on the support plate.
Compared with the prior art, the traction device for stretching the optical fiber preform has the advantages that the annular air bags with soft textures are arranged on the outer sides of the traction wheels, so that the traction surfaces which continuously move downwards and have the same movement direction as the stretching direction of the optical fiber preform are formed at the positions where the two annular air bags are mutually extruded and attached, the optical fiber preform is clamped by the traction surfaces and continuously pulled downwards, the traction surfaces are in surface contact with the optical fiber preform, the contact area is large, the pressure born by the unit area of the surface of the optical fiber preform is small, and the surface of the optical fiber preform is not easy to damage in the traction process due to the soft textures of the annular air bags.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example, with reference to the accompanying drawings.
Fig. 1 is a schematic view showing the structure of a drawing device for drawing an optical fiber preform according to the present utility model.
Fig. 2 is a schematic transmission diagram of a driving mechanism in a drawing device for drawing an optical fiber preform according to the present utility model.
Fig. 3 is a schematic view showing the position of a drawing surface in a drawing device for drawing an optical fiber preform according to the present utility model.
Fig. 4 is an axial sectional view of a traction wheel and an annular balloon in the traction apparatus for stretching an optical fiber preform according to the present utility model.
The meaning of the individual reference numerals in the figures is as follows:
100. a heating furnace; 200. an optical fiber preform; 201. an optical fiber preform; 300. a support plate; 10. a traction wheel; 11. an annular air bag; 111. a traction surface; 112. an annular groove; 12. an air tap; 20. a rotating shaft; 21. a gear; 30. a driving motor; 40. a positioning wheel; 50. a calliper.
Detailed Description
For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.
Referring to fig. 1 to 4, the present utility model provides a drawing apparatus for drawing an optical fiber preform, which includes a heating furnace 100, an optical fiber preform 200, a support plate 300, a drawing wheel set, and a driving mechanism. The optical fiber parent metal 200 is a quartz optical fiber bar with a larger diameter, and is drawn into a prefabricated rod with a smaller diameter, so that stable control of a subsequent optical fiber drawing process is facilitated, and the drawn optical fiber quality is improved.
In combination with the illustration, a corresponding clamping frame for the optical fiber base material 200 is arranged in the heating furnace 100, the optical fiber base material 200 is arranged on the clamping frame, the heating furnace 100 heats the optical fiber base material 200, the traction wheel set comprises two traction wheels 10 which are symmetrically arranged, the two traction wheels 10 are both rotationally connected to the supporting plate 300, and the driving mechanism drives the two traction wheels 10 to synchronously rotate and rotate in opposite directions.
Thereby, the optical fiber preform 200 is stretched by the two traction wheels 10, so that the optical fiber preform 201 having a diameter reaching a preset specification is formed under the optical fiber preform 200, for example, drawn by using different processes and dies for opening holes according to different needs.
Because the traction wheel 10 and the optical fiber preform 201 are both round, when the hard traction wheel 10 is in contact with the optical fiber preform 201, the contact area is small, so that the pressure at the contact position of the optical fiber preform 201 and the traction wheel 10 is large, the surface of the optical fiber preform 201 is easy to damage in the traction process, and the production of the subsequent optical fiber is affected. For this reason, in the example of the present utility model, as shown in fig. 3 and 4, an annular air bag 11 is coaxially sleeved on the outer sides of both traction wheels 10, and a high temperature resistant material can be used for the air bag because a small diameter preform is drawn and cooled, and a high temperature state is not maintained.
Therefore, the soft texture of the annular air bags 11 has good elasticity, so that the continuous downward movement is formed at the position where the two annular air bags 11 are mutually extruded and attached under the driving of the two traction wheels 10, the movement direction of the traction surface 111 is consistent with the stretching direction of the optical fiber preform 201, the optical fiber preform 201 is clamped by the traction surface 111 and is continuously pulled downwards, the traction surface 111 is in surface contact with the optical fiber preform 201, the contact area is large, the pressure born by the unit area of the surface of the optical fiber preform 201 is small, and the surface of the optical fiber preform 201 is not easy to damage in the pulling process due to the soft texture of the annular air bags 11.
As shown in fig. 2 and 4, the side surface of the annular air bag 11 is provided with an annular groove 112 for increasing the contact area with the optical fiber preform 201, the cross section of the annular groove 112 is arc-shaped, when the annular air bag 11 clamps and pulls the optical fiber preform 201, the optical fiber preform 201 passes through the annular groove 112, and the annular air bag 11 can be better contacted and attached with the optical fiber preform 201, so that the contact area is increased.
In combination with the embodiment shown in fig. 3 and 4, the traction wheel 10 is provided with the air tap 12 for adjusting the internal pressure of the annular air bag 11, one end of the air tap 12 extends to the inside of the annular air bag 11, and is connected with the air tap 12 by using external air supply equipment, so that the air pressure of the annular air bag 11 can be increased, the pressure of the annular air bag 11 to the optical fiber preform 201 can be increased, and the traction force can be increased.
As shown in fig. 2 and 4, the driving mechanism includes a rotating shaft 20, a transmission gear set and a driving motor 30, the rotating shaft 20 is coaxially fixed on two traction wheels 10, the traction wheels 10 are rotatably connected to the supporting plate 300 through the rotating shaft 20, the driving motor 30 is mounted on the supporting plate 300, the output end of the driving motor 30 is fixedly connected with one of the rotating shafts 20, the driving motor 30 drives the two rotating shafts 20 through the transmission gear set to synchronously rotate and rotate in opposite directions, the two traction wheels 10 connected with the rotating shaft 20 synchronously rotate and rotate in opposite directions, one traction wheel 10 rotates anticlockwise, the other traction wheel 10 rotates clockwise, and the optical fiber preform 201 is pulled downwards through the annular air bag 11.
Further, the transmission gear set includes two gears 21 meshed with each other, the two gears 21 are coaxially fixed on the two rotating shafts 20, when the driving motor 30 drives one rotating shaft 20 to rotate, the other rotating shaft 20 is driven to synchronously rotate by the two gears 21 meshed with each other, and finally the two rotating shafts 20 are driven to rotate by the driving motor 30.
In an alternative embodiment, the driving motor 30 is a stepper motor, and the rotation speed of the stepper motor can be adjusted according to different traction speed requirements, so that the flexibility is high.
Referring to fig. 1, two positioning wheel sets are mounted on the support plate 300 and are respectively located in an input direction and an output direction of the traction wheel set, the positioning wheel sets comprise two symmetrically arranged positioning wheels 40, the two positioning wheels 40 are rotatably connected to the support plate 300 through a rotating shaft, the traction optical fiber preform 201 passes through between the two positioning wheels 40, and the traction of the optical fiber preform 201 is guided through the two positioning wheels 40, so that deflection of the optical fiber preform 201 in the traction process is avoided.
Further, the supporting plate 300 is provided with a diameter measuring instrument 50 for measuring the diameter of the optical fiber preform 201, the diameter measuring instrument 50 is a laser diameter measuring instrument, and the diameter of the optical fiber preform 201 is detected in real time through the laser diameter measuring instrument, so that the diameter of the optical fiber preform 201 in the traction process is ensured to meet the requirement.
In combination with the above embodiment, by providing the soft annular air bags 11 outside the traction wheel 10, the position where the two annular air bags 11 are mutually pressed and attached is formed with the traction surface 111 which continuously moves downwards, and the movement direction is consistent with the stretching direction of the optical fiber preform 201, the optical fiber preform 201 is clamped by the traction surface 111 and continuously pulled downwards, the traction surface 111 is in surface contact with the optical fiber preform 201, and the contact area is large, so that the pressure born by the unit area of the surface of the optical fiber preform 201 is small, and the surface of the optical fiber preform 201 is not easily damaged in the process of pulling because the annular air bags 11 are soft in texture.
While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.
Claims (10)
1. A drawing device for drawing an optical fiber preform, comprising:
a heating furnace (100) and an optical fiber base material (200) positioned in the heating furnace (100), wherein an optical fiber preform (201) is formed after the lower part of the optical fiber base material (200) is heated by the heating furnace (100);
a support plate (300) disposed at a position below the heating furnace (100);
the traction wheel set comprises two traction wheels (10) which are symmetrically arranged, and the two traction wheels (10) are rotatably connected to the supporting plate (300); and
the driving mechanism is arranged on the supporting plate (300) and is used for driving the two traction wheels (10) to synchronously rotate, and the rotation directions of the two traction wheels (10) are opposite, namely: one traction wheel (10) rotates anticlockwise, and the other traction wheel (10) rotates clockwise;
the optical fiber preform (201) is characterized in that annular air bags (11) are coaxially sleeved on the outer sides of the traction wheels (10), under the driving of the traction wheels (10), continuous downward movement is formed at the position where the two annular air bags (11) are mutually attached, and the movement direction of the annular air bags is identical to the drawing direction of the optical fiber preform (201), and the optical fiber preform (201) is clamped through the drawing surface (111) and continuously drawn downwards.
2. A pulling device for optical fiber preform stretching according to claim 1, wherein the side surface of the annular balloon (11) is provided with an annular groove (112) for increasing the contact area with the optical fiber preform (201).
3. A pulling device for optical fiber preform stretching according to claim 2, wherein the annular groove (112) has a circular arc-shaped cross section.
4. The traction device for stretching an optical fiber preform according to claim 1, wherein an air tap (12) for adjusting the internal pressure of the annular air bag (11) is provided on the traction wheel (10), and one end of the air tap (12) extends to the inside of the annular air bag (11).
5. The traction device for stretching an optical fiber preform according to claim 1, wherein the driving mechanism comprises a rotating shaft (20), a transmission gear set and a driving motor (30), the rotating shafts (20) are coaxially fixed on the two traction wheels (10), the traction wheels (10) are rotatably connected to the supporting plate (300) through the rotating shafts (20), the driving motor (30) is mounted on the supporting plate (300), and the output end of the driving motor (30) is fixedly connected with one of the rotating shafts (20) and is used for driving the rotating shafts (20) to rotate, and the two rotating shafts (20) synchronously rotate through the transmission gear set and rotate in opposite directions.
6. A pulling device for stretching an optical fiber preform according to claim 5, wherein the transmission gear set comprises two gears (21) engaged with each other, and the two gears (21) are coaxially fixed to the two rotating shafts (20), respectively.
7. The pulling apparatus for drawing an optical fiber preform according to claim 5, wherein the driving motor (30) is a stepping motor.
8. The pulling apparatus for optical fiber preform drawing according to claim 1, wherein two positioning wheel sets are mounted on the support plate (300) in an input direction and an output direction of the pulling wheel sets, respectively.
9. The pulling apparatus for optical fiber preform stretching according to claim 8, wherein the positioning wheel group comprises two symmetrically arranged positioning wheels (40), and both the positioning wheels (40) are rotatably connected to the support plate (300).
10. The pulling apparatus for drawing an optical fiber preform according to claim 1, wherein a calliper (50) for measuring a diameter of the optical fiber preform (201) is mounted on the support plate (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320246490.8U CN219621081U (en) | 2023-02-17 | 2023-02-17 | Traction device for stretching optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320246490.8U CN219621081U (en) | 2023-02-17 | 2023-02-17 | Traction device for stretching optical fiber preform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219621081U true CN219621081U (en) | 2023-09-01 |
Family
ID=87767843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320246490.8U Active CN219621081U (en) | 2023-02-17 | 2023-02-17 | Traction device for stretching optical fiber preform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219621081U (en) |
-
2023
- 2023-02-17 CN CN202320246490.8U patent/CN219621081U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101018744B (en) | Pull roll assembly for drawing a glass sheet | |
| CN101970361A (en) | Pull roll apparatus and method for controlling glass sheet tension | |
| US7805963B2 (en) | Method for continuously forming optical fiber connector glass and other close tolerance components | |
| CN108584508A (en) | Online exhibition fine buffering constant tension device and its application method | |
| CN219621081U (en) | Traction device for stretching optical fiber preform | |
| CN112759249A (en) | Optical fiber rotating device and optical fiber drawing system | |
| US20030159469A1 (en) | Apparatus for bending a glass sheet and curved roller | |
| KR101099218B1 (en) | Equipment for producing fiber reinforced resin strand | |
| US4923498A (en) | Method for forming a groove in a glass tube | |
| CN111153589B (en) | Traction equipment for extension and capillary drawing of special optical fiber preform | |
| CN205347646U (en) | Tensile setting device of plastic flat filament | |
| JPH0578139A (en) | Device for drawing preform base material for optical fiber | |
| CN211814167U (en) | Traction equipment for extending special optical fiber preform and drawing capillary tube | |
| CN217709250U (en) | Glass drawing system | |
| CN1180998C (en) | Optical fiber cone drawing technology and equipment | |
| JP6558601B2 (en) | Nip-switching tension adjustment mechanism for fiber opening device | |
| CN113248135B (en) | Intermediate auxiliary traction device for optical fiber drawing tower | |
| JP2003048732A (en) | Method for forming precision glass tube | |
| CN213570141U (en) | Glass tube drawing device | |
| CN109796126B (en) | Glass forming equipment | |
| CN216106608U (en) | Quartz tube straightening device | |
| JPS6114149A (en) | Stretching method of glass body | |
| CN113620574B (en) | Quartz tube straightening device and method | |
| CN106944570B (en) | Twisted heat exchange tube manufacturing device | |
| JP2004149353A (en) | Method for manufacturing optical fiber and manufacturing apparatus therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |