WO2014110998A1

WO2014110998A1 - Rotating wire-drawing apparatus and operating method therefore

Info

Publication number: WO2014110998A1
Application number: PCT/CN2014/070492
Authority: WO
Inventors: 杜兵
Original assignee: 西安金和光学科技有限公司
Priority date: 2013-01-20
Filing date: 2014-01-11
Publication date: 2014-07-24
Also published as: CN103936278A; CN103936278B

Abstract

A rotating wire-drawing apparatus and an operating method therefore. The rotating wire-drawing apparatus comprises a preheating stove (4) used for melting a head portion of an optical fiber preform (3), and an extracting apparatus module (10) used for drawing an optical fiber (8) from the head portion of the optical fiber preform, and further comprises a rotating apparatus module (9) used for making the optical fiber have an unidirectional rotation along the axial line when the optical fiber is drawn, so as to generate an elastic torsion, and a wire pulling apparatus module (25) used for applying the torsion along the axial line on the rotated optical fiber, the torsion direction being opposite to the foregoing elastic torsion. The operating method of the rotating wire-drawing apparatus comprises: drawing an optical fiber preform into an optical fiber; and when the wire is drawn, rotating the optical fiber in a single direction of the optical fiber to make the optical fiber to bear an elastic torsion; a wire pulling apparatus module making the optical fiber rotate along the axial line of the optical fiber, the torsion direction being opposite to the elastic torsion; and collecting and winding the optical fiber at the inner surface of the wire pulling apparatus module. By means of the rotating wire-drawing apparatus and the operating method, the optical fiber can be drawn in the rotation with a middle or high speed, the residual torsion of the optical fiber in a collecting apparatus is collected.

Description

Rotary wire drawing device and operation method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a spinning fiber optic manufacturing apparatus and a method of operating the same, and more particularly to an optical fiber drawing apparatus and operating method that can be used in the manufacture of low polarization mode dispersion fibers and rotating multi-core fibers.

Background technique

Rotating wire drawing of fibers is most commonly used to reduce polarization mode dispersion in the production of single mode fibers or to produce special sensing fibers. The existing rotating method for the production of low polarization mode dispersion fiber is mainly produced by the forward and reverse two-way pulsation method, such as the scheme described in Chinese Patent Application No. 03107636. X "Optical Fiber with Low Polarization Mode Dispersion", which can be directly It is installed on the existing wire drawing device, so the cost is low, the drawing speed is not affected, and it has been widely used. Another one-way rotating wire drawing technique is only used in special fiber production, such as the one described in Chinese Patent Application No. 03823050. X "Low Polarization Dispersion Optical Fiber and Its Manufacturing Process and Apparatus", due to The existing drawing equipment has been greatly modified, so the application is less. Chinese Patent Application No. 201110310614. 6 "Manufacturing Method of Rotating Optical Fiber and Rotary Fiber Receiving Device" describes a unidirectional rotating wire drawing device and a running method for producing a rotating optical fiber by rotating a fiber receiving disk. Low polarization mode dispersion fiber or special sensing fiber needs to rotate 5 to 100 turns per meter when drawing, while the existing wire drawing machine has a drawing speed of 800 to 2000 meters per minute, so the fiber needs to be rotated every minute during drawing. 4000 to 200,000 rpm, such a speed can not be achieved by the existing wire drawing machine, so only a large reduction in the drawing speed can satisfy the rotation. Transfer requirements, such as the production of 20 rotations of fiber per meter, the equipment rotating device can withstand a speed of 2000 rpm, the drawing speed is 100 m / min, this speed leads to low fiber production efficiency, thus making the product The cost is high.

Summary of the invention

The invention discloses a rotary wire drawing device and a running method thereof, and the manufacturing device and the operating method can also be used for manufacturing single-core fiber or multi-core fiber, such as low polarization mode dispersion fiber, twin-core spiral core fiber and three-core spiral For the manufacture of core fiber, etc., the latter two fibers can be used in the field of fiber laser or fiber sensing.

In order to solve the above technical problems, the technical solution adopted by the present invention is:

A rotary wire drawing device, comprising:

a furnace for melting the ends of the optical fiber preform;

a traction device module for pulling an optical fiber from an end of the optical fiber preform;

a rotating device module for unidirectionally rotating the optical fiber about its axis when the optical fiber is stretched, so that the optical fiber is elastically twisted;

The device further includes: a wire take-up device module for applying a twist about the axis to the rotated optical fiber, the twisting direction being opposite to the direction of the elastic twist; and the twisted fiber is disposed on the twisted fiber Inside the wire take-up module.

Further, the wire take-up device module comprises a container and a rotating module disposed at the bottom of the container, the optical fiber enters the inside of the container through the upper opening of the container, and the rotating module at the bottom of the container drives the container to rotate, the rotation reduces the fiber entering the container The elastic twist, the fiber is coiled on the inner surface of the container.

Preferably, the wire take-up device module further comprises a lifting platform, wherein the rotating module is fixed on the lifting platform, and controls the lifting movement of the lifting platform to move the container and the rotating module up and down Move, thereby making the fiber more evenly coiled on the inner surface of the container.

Preferably, the wire take-up device module is located at a lower portion of the traction device module. Further, the wire drawing device further comprises a rewinding and rewinding device module, comprising a rotating module, a container disposed on the rotating module and a driving module, wherein the optical fiber is led out from the container through the guide wheel, coiled on the optical fiber disk, and the optical fiber disk is disposed on the fiber optic disk On the drive module.

Preferably, the container is constructed of a high strength non-metallic material. For example, a container made of high-strength fibers such as carbon fiber or aramid fiber is light in weight and high in centrifugal resistance, and some containers can withstand 6000 rpm, which can greatly increase the drawing speed of the wire drawing machine of the present invention.

Preferably, a transport module is further disposed between the traction device module and the wire take-up device module, and includes a sleeve, a gas pipe disposed on the sleeve, and a gas source for generating compressed gas, and the optical fiber falling from the traction device module passes through the sleeve The tube enters the wire take-up device module, and the compressed gas output from the gas source is input into the casing through the gas pipe, and the compressed gas in the casing blows the fiber downward.

The operation method of the rotary wire drawing device includes:

Drawing an optical fiber preform into an optical fiber;

When drawing, the optical fiber is unidirectionally rotated around the axis of the optical fiber to subject the optical fiber to elastic distortion;

The utility model further comprises: rotating the optical fiber around the axis thereof by rotating the wire take-up device module, the twisting direction is opposite to the direction of the elastic twist, thereby controlling the elastic distortion; and collecting the optical fiber through the wire take-up device module Coiled on its inner surface.

Preferably, the wire take-up device module comprises a container and a bottom portion of the container The rotating module, the optical fiber enters the interior of the container through the upper opening of the container, and the rotating module at the bottom of the container drives the rotation of the container, which reduces the elastic distortion on the optical fiber entering the container, and the optical fiber is wound on the inner surface of the container. When the container rotates at a high speed, it will drive the fiber to rotate, so that the fiber has a large centrifugal force, and the fiber is attached to the inner wall of the container to complete the collection of the fiber.

Preferably, the rotation of the inner container of the wire take-up module produces a torsional modulus that is greater than the aforementioned elastic distortion of the fiber, thereby causing residual distortion of the fiber. Thereby, the fiber is wound around the inner wall of the container.

Preferably, the rotation of the wire take-up module is to twist the fiber at a constant rotational speed or a varying rotational speed.

Preferably, the wire take-up device module further comprises a lifting platform, and the rotating module is fixed on the lifting platform, and the container and the rotating module are moved up and down by controlling the up and down movement of the lifting platform, so that the optical fiber is more uniformly coiled on the inner surface of the container.

Preferably, the method further comprises the steps of: deriving the optical fiber from the wire take-up device module and winding it on the fiber optic disk, and twisting the optical fiber during the export. The specific method is: the wire take-up device module includes a container and a rotating module, and the rotation of the rotating module drives the rotation of the container to twist the optical fiber.

A coating module is further included on the conventional fiber drawing machine for coating at least a layer of polymer material on the surface of the fiber during drawing of the fiber. Preferably, 1% to 20% by volume of oxygen is passed into the coating module. The light curing device module. The surface of the photocured coating layer has a certain viscosity, which is favorable for the optical fiber on the inner surface of the wire take-up device The present invention has the following advantages over the prior art:

1. Since the wire take-up device module includes a rotatable container and is located at the lower portion of the traction device, the fiber from the traction device will reduce the elastic distortion on the fiber due to the rotation of the container, and then the fiber enters under the force of gravity. Into the container, and due to the high-speed rotation of the container, the optical fiber is biased against the inner surface of the container by the centrifugal force and coiled thereon, thereby achieving the purpose of reducing the elastic distortion of the optical fiber and collecting the optical fiber.

2. Since the container in the wire take-up device module has the function of eliminating the elastic distortion of the optical fiber and collecting the optical fiber, there is no problem of synchronization during high-speed rotation, thereby preventing the optical fiber from being subjected to an indeterminate force in eliminating twisting and coiling. If the fiber strength is problematic, the rotation speed of the container is greatly increased. If a container made of carbon fiber is used, the rotation speed can reach 6000 rpm or more, which can greatly increase the drawing speed and reduce the production cost of the fiber.

In summary, the rotary wire drawing device and the operating method of the invention have the characteristics of simple structure, low cost, good use performance and simple operation method.

The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

DRAWINGS

Figure 1 is a schematic view showing the structure of a drawing tower of the present invention.

2 is a schematic view of a fiber structure of a double-core spiral core.

Fig. 3 is a schematic view showing the structure of another double-core spiral core.

Figure 4 is a schematic view showing the structure of the rewinding device of the present invention. Description of the reference signs:

1 a drawing axis; 2 - clamping device; 3 optical fiber preform; 4 a heating furnace;

5—outer diameter tester; 6—paint cup; 7—curing device module; 8—fiber;

9 one-way rocking device module; 10 - traction device module; 11 one multi-core fiber;

12 containers; 15 - core one; 16 - core two; 17 cladding; 20 - rotating module;

21—drive unit; 22—fiber tray; 25—retractor module; 26—lift platform;

27 torsion rewinding module; 28—delivery module; 29 casing;

30 trachea; 31 gas source.

Specific lung

The rotary wire drawing device of the present invention as shown in FIG. 1 includes:

a heating furnace 4 for melting the end of the optical fiber preform 3;

a traction device module 10 for pulling the optical fiber 8 from the end of the optical fiber preform 3; a one-way pulsator module 9 for unidirectionally rotating the optical fiber 8 about its axis when the optical fiber 8 is stretched, so that the optical fiber The elastic device can be elastically twisted; the rotating device can be composed of two pairs of tilting wheels, and one set of the tilting wheel is swiveled and the other group continues to tilt the optical fiber 8 in the same direction, and the front pair of tilting wheels pulls a certain gap back to The initial position, and in this process, the fiber is no longer swayed, and thus alternately operates to continuously unidirectionally rotate the optical fiber 8. Of course, the same rotating optical fiber 8 effect can be achieved by using the rotating device mentioned in the patent application No. 03823050.

In particular: the wire drawing device further comprises a wire take-up device module 25 for applying a twist about its axis to the rotated optical fiber 8, the twisting direction being applied to the optical fiber 8 with the one-way agitator module 9 The direction of the elastic twist is reversed; at the same time, the twisted fiber 8 is placed inside the wire take-up module 25. Here, preferred The wire take-up device module 25 includes a container 12 and a rotating module 20 disposed at the bottom of the container 12. The optical fiber 8 enters the interior of the container 12 through the opening of the container 12, and the container 12 is rotated by the rotation module 20 disposed at the bottom thereof, thereby eliminating The elastic distortion on the optical fiber 8 entering the inside of the container 12, and the rotation of the container 12 causes the optical fiber 8 to be wound toward the inner surface of the container 12 by centrifugal force. That is, the higher the rotational speed, the easier the optical fiber 8 is wound around the inner surface of the container 12 due to the centrifugal force.

Further, the container 12 is located at a lower portion of the traction device module 10. It is advantageous for the optical fiber 8 to enter the interior of the container 12 by gravity from the traction device module 10.

Preferably, the wire take-up device module 25 further includes a lifting platform 26, and the rotating module 20 is fixed on the lifting platform 26 to control the vertical movement of the lifting platform 26 to move the container 12 and the rotating module 20 up and down, so that the optical fiber 8 is inside the container 12. More uniform surface When using the optical fiber 8, one method is to rewind onto the existing I-shaped fiber optic disk 22, that is, to use a back-twist rewinding device module 27, as shown in Figure 4, which includes a rotating module 20 and a container 12 disposed on the rotating module 20, the optical fiber 8 is led out from the container 12 through a guide wheel, coiled on the optical fiber disk 22, and the optical fiber disk 22 is placed on the driving device 21, and when the optical fiber 8 is led out from the container 12, the container 12 is rotated by the rotation module 20 to eliminate elastic torsion on the optical fiber 8.

On the drawing tower, a coating device is also included. The common coating device includes a paint cup 6 and a curing device module 7. When the bare fiber 8 passes through the paint cup 6, the coating material in the paint cup adheres to the bare fiber 8. The surface of the coating can be cured at the curing device module 7 to form a coating on the surface of the optical fiber 8 to protect the strength of the optical fiber 8. Preferably, when the coating material is a photocurable material, there is 1% to 20% by volume in the curing device module 7. The passage of oxygen causes the surface of the photocured coating layer to have a certain viscosity, which facilitates the coiling of the optical fiber 8 on the inner surface of the wire take-up device module 25.

Preferably, the container 12 is made of a high-strength carbon fiber material or an aramid fiber material, which ensures the safety and reliability of the container 12 when it is rotated at a high speed or at an ultra-high speed.

Preferably, the optical fiber preform 3 is a multi-core preform comprising at least two cores.

Preferably, a transport module 28 is further disposed between the traction device module 10 and the wire take-up module 25, and includes a sleeve 29, a gas pipe 30 disposed on the sleeve 29, and a gas source 31 for generating compressed gas. The optical fiber 8 from the module 10 enters the wire take-up device module 25 through the sleeve 29, and the compressed gas output from the gas source 31 is input into the sleeve 29 through the air pipe 30, and the compressed gas in the sleeve 29 blows the optical fiber 8 downward, which is advantageous for The optical fiber 8 enters the container 12.

The operation method of the rotary wire drawing device includes:

Drawing the optical fiber preform 3 into an optical fiber 9;

When drawing, the optical fiber 8 is unidirectionally rotated around the axis of the optical fiber 8 to subject the optical fiber 8 to elastic distortion;

In particular, it also includes rotating the optical fiber 8 around the axis thereof by rotating the wire take-up device module 25, the twisting direction is opposite to the direction of the elastic twist, thereby controlling the elastic distortion; and passing the wire take-up device module 25 The optical fiber 8 is collected and coiled on its inner surface.

Preferably, the wire take-up device module 25 includes a container 12 and a rotating module 20 disposed at the bottom of the container 12, and the optical fiber 8 enters the container through the upper opening of the container 12. Inside the 12, the rotating module 20 at the bottom of the container 12 causes the container 12 to rotate, which reduces the elastic distortion on the fiber 8 entering the container 12, which is coiled on the inner surface of the container 12. When the container 12 rotates at a high speed, the optical fiber 8 is rotated, so that the optical fiber 8 has a large centrifugal force, and the optical fiber 8 is attached to the inner wall of the container 12 to complete the collection of the optical fiber 8.

Preferably, the rotation of the container 12 of the take-up unit module 25 produces a twisted modulus that is greater than the aforementioned elastic distortion of the optical fiber 8, thereby causing the fiber 8 to have residual distortion. This facilitates the winding of the optical fiber 8 on the inner wall of the container 12.

Preferably, the rotation of the take-up unit module 25 twists the optical fiber 8 at a constant rotational speed or varying rotational speed.

Preferably, the wire take-up device module 25 further comprises 26 lifting and lowering platforms. The rotating module 20 is fixed on the lifting platform 26, and the container 12 and the rotating module 20 are moved up and down by controlling the vertical movement of the lifting platform 26, so that the optical fiber 8 is in the container. 12 inner surface is more evenly coiled.

Preferably, the method further comprises the steps of: guiding the optical fiber 8 from the wire take-up module 25 and winding it on the fiber optic disk 22, and twisting the optical fiber 8 during the export. The specific method is as follows: The wire take-up device module 25 includes a container 12 and a rotation module 20, and the rotation of the container 12 is rotated by the rotation of the rotation module 20, thereby twisting the optical fiber 8.

On the drawing tower, a coating device is also included. The common coating device includes a paint cup 6 and a curing device module 7. When the bare fiber 8 passes through the paint cup 6, the coating material in the paint cup adheres to the bare fiber 8. On the surface, the coating material can be cured to form a coating layer on the surface of the optical fiber 8 when the device module 7 is cured, protecting the strength of the optical fiber 8. Preferably, when the coating material is a photocurable material, there is 1% to 20% by volume in the curing device module 7. The oxygen gas is introduced to make the surface of the photocured coating layer have a certain viscosity, which facilitates the coiling of the optical fiber 8 on the inner surface of the wire take-up device module 25.

When the optical fiber preform 3 used for wire drawing is a multi-core preform comprising two cores, the fiber obtained after the rotary drawing is a multi-core fiber 11 having a spiral core, as shown in FIG. 2 and FIG. 3, including The core 15 , the core 2 16 and the cladding 17 have good application prospects in fiber lasers, fiber sensing, and fiber optic communication devices.

In addition to being used as a manufacturing device for rotating multi-core fibers, the present drawing device can also be used for the manufacture of low-polarization mode dispersion fibers, thereby enabling the present wire drawing device to have a wider use, thereby further reducing the risk and cost of the device.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments in accordance with the technical spirit of the present invention still belong to the present technology. Within the scope of protection of the program.

Claims

Claim

A rotary wire drawing device comprising:

a furnace module (4) for melting the end of the optical fiber preform (3); a traction device module (10) for pulling the fiber (8) from the end of the optical fiber preform (3);

a rotating device module (9) for unidirectionally rotating the optical fiber (8) about its axis when the optical fiber (8) is stretched, so that the optical fiber (8) is elastically twisted;

The device is further characterized by: the device further comprising a wire take-up device module (25) for applying a twist about the axis of the rotated optical fiber (8), the twisting direction being opposite to the direction of the elastic twist At the same time, the twisted fiber (8) is placed inside the wire take-up module (25).

2. A rotary wire drawing device according to claim 1, wherein the wire take-up device module (25) comprises a container (12) and a rotating module (20) disposed at the bottom of the container (12), the optical fiber (8) Entering the inside of the container (12) through the upper opening of the container (12), the rotating module (20) at the bottom of the container (12) drives the container (12) to rotate, which reduces the fiber entering the container (12) (8) The elastic distortion on the fiber (8) is coiled on the inner surface of the container (12).

3. The rotary wire drawing device according to claim 2, wherein the wire take-up device module (25) further comprises a lifting platform (26), and the rotating module (20) is fixed on the lifting platform (26) The lifting platform (26) moves the container (12) and the rotating module (20) up and down.

4. A rotary wire drawing device according to claim 1, wherein: Also included is a back-twist rewinding module (27) comprising a rotating module (20), a container (12) and a driving module (21) disposed on the rotating module (20), and an optical fiber (8) from the container (12) It is guided by the guide wheel, coiled on the fiber tray (22), and the fiber tray (22) is placed on the drive module (21).

A rotary wire drawing device according to claim 2 or 4, characterized in that the container (12) is made of a high-strength non-metallic material.

6. A rotary wire drawing device according to claim 1, characterized in that a conveying module (28) is further arranged between the traction device module (10) and the wire take-up module (25), which comprises a sleeve ( 29), the air pipe (30) placed on the casing (29) and the gas source (31) for generating compressed gas, the optical fiber (8) coming down from the traction device module (10) passes through the casing (29) and enters the winding line The device module (25), the compressed gas output from the gas source (31) is input into the casing (29) through the gas pipe (30), and the compressed gas in the casing (29) blows the fiber (8) downward.

7. A method of operating a rotary wire drawing device, comprising:

The optical fiber preform (3) is drawn into an optical fiber (8) _;

During drawing, the optical fiber (8) is unidirectionally rotated around the axis of the optical fiber (8) to subject the optical fiber (8) to elastic distortion;

The method further comprises: rotating the fiber-removing fiber (8) around the axis thereof by rotating the wire-receiving device module (25), and the twisting direction is opposite to the direction of the elastic twist, thereby controlling the elastic distortion; The fiber (8) is collected by the wire take-up module (25) and coiled on its inner surface.

8. The method of operating a rotary wire drawing device according to claim 7, wherein the wire take-up device module (25) comprises a container (12) and is disposed on The rotating module (20) at the bottom of the container (12), the optical fiber (8) enters the inside of the container (12) through the upper opening of the container (12), and the rotating module (20) at the bottom of the container (12) drives the container (12) to rotate. This rotation reduces the elastic distortion on the fiber (8) entering the container (12), which is coiled on the inner surface of the container (12).

9. The method of operating a rotary wire drawing device according to claim 8, wherein the wire take-up device module (25) further comprises a lifting platform (26), and the rotating module (20) is fixed on the lifting platform (26) , controlling the up and down movement of the lifting platform (26) to move the container (12) and the rotating module (20) up and down, so that the optical fiber (8) is more evenly wound on the inner surface of the container (12).

10. A method of operating a rotary wire drawing device according to claim 7 or 8, characterized in that the rotation of the inner container (12) of the wire take-up device module (12) produces a torsion modulus greater than that of the optical fiber (8) The above elastic distortion causes the optical fiber (8) to have residual distortion.

11. The method of operating a rotary wire drawing device according to claim 9, wherein the rotation of the middle container (12) of the wire take-up device module (25) is to twist the fiber at a constant rotational speed or a varying rotational speed (8). ).

12. The method of operating a rotary wire drawing device according to claim 7, further comprising the steps of: deriving the optical fiber (8) from the wire take-up device module (25) and winding it on the fiber optic disk, Twist the fiber (8) when exporting.

13. The method of operating a rotary wire drawing device according to claim 11, wherein the wire take-up device module (25) comprises a container (12) and a rotation module

(20), rotating the container (12) by the rotation of the rotating module (20), thereby twisting the optical fiber (8).