阅读说明：本技术 光纤的加工方法 (Method for processing optical fiber ) 是由 冯高锋 杨军勇 袁卿瑞 王醒东 胡涛涛 孙林波 林志伟 于 2021-07-29 设计创作，主要内容包括：本申请公开了一种光纤的加工方法,包括气线检测工序,气线检测工序包括以下步骤：1)通过激光发射器向光纤发射一束垂直于光纤的激光,并通过激光接收器接收；2)当激光接收器接收到的信号强度突变时,判断光纤出现气线,记录气线的起始位置,并控制收卷设备降低收卷速度；3)当激光接收器接收到的信号强度恢复时,判断光纤没有气线,记录气线的结束位置,在光纤的气线段全部绕设在收卷盘上后,恢复收卷设备的收卷速度。本申请光纤的加工方法通过设置额外的气线检测工序能够在线检测气线的出现位置和结束位置,既方便后期对气线段进行处理,又能够在检测出气线时控制收卷设备降低收卷速度,降低光纤的张力,防止光纤因为气线导致断裂。(The application discloses a processing method of an optical fiber, which comprises a gas line detection process, wherein the gas line detection process comprises the following steps: 1) transmitting a laser beam perpendicular to the optical fiber through a laser transmitter, and receiving the laser beam through a laser receiver; 2) when the intensity of the signal received by the laser receiver changes suddenly, judging that the optical fiber has a gas line, recording the initial position of the gas line, and controlling the winding device to reduce the winding speed; 3) when the signal intensity received by the laser receiver is recovered, judging that the optical fiber has no gas line, recording the end position of the gas line, and recovering the winding speed of the winding device after the gas line section of the optical fiber is completely wound on the winding disc. According to the processing method of the optical fiber, the appearance position and the end position of the gas line can be detected on line by setting an extra gas line detection process, so that the gas line section can be processed in the later period conveniently, the winding speed of the winding equipment can be controlled to be reduced when the gas line is detected, the tension of the optical fiber is reduced, and the optical fiber is prevented from being broken due to the gas line.)

1. The processing method of the optical fiber comprises a melting process, a cooling process, a coating solidification process and a rolling process, and is characterized in that an air line detection process is further arranged between the cooling process and the coating solidification process, and comprises the following steps:

1) transmitting a laser beam perpendicular to the optical fiber through a laser transmitter, and receiving the laser beam through a laser receiver;

2) when the intensity of the signal received by the laser receiver changes suddenly, judging that the optical fiber has a gas line, recording the initial position of the gas line, and controlling the winding device to reduce the winding speed;

3) when the signal intensity received by the laser receiver is recovered, judging that the optical fiber has no gas line, recording the end position of the gas line, and recovering the winding speed of the winding device after the gas line section of the optical fiber is completely wound on the winding disc.

2. The optical fiber processing method according to claim 1, wherein the gas line detection process is performed by a gas line detection device including a laser transmitter and a laser receiver which are respectively provided on both sides of the optical fiber.

3. The method of processing an optical fiber according to claim 2, wherein the gas line detecting device further comprises:

the rotating motor is relatively fixed with the laser transmitter;

the sector plate has minor diameter end and major diameter end, the minor diameter end of sector plate with the axis of rotation of rotating the motor is fixed, and the major diameter end of sector plate is located laser emitter's transmitting terminal, and the major diameter end of sector plate has the different through-hole in a plurality of apertures, the through-hole is used for supplying laser to pass.

4. The method according to claim 2 or 3, wherein the gas line detection device further comprises two deviation detection mechanisms and a movement adjustment mechanism, the laser emitter is mounted on the movement adjustment mechanism, the movement adjustment mechanism is used for driving the laser emitter to move along a direction perpendicular to the laser emission, the two deviation detection mechanisms are arranged at an interval from top to bottom, the laser emitter and the laser receiver are located between the two deviation detection mechanisms, and the deviation detection mechanism comprises:

the laser emitting frame assembly is used for emitting a plurality of parallel light rays, the plurality of light rays are divided into two groups, the two groups of light rays are respectively positioned on two sides of the optical fiber, and the light rays are parallel to the laser of the laser emitter;

the laser receiving frame assembly is used for receiving the light of the laser emitting frame assembly.

5. The method of processing an optical fiber according to claim 4, wherein the movement adjusting mechanism comprises:

a base;

the sliding rod is fixed on the base;

the screw rod is rotatably arranged on the base and is parallel to the sliding rod;

the adjusting block is provided with a sliding hole and a threaded hole, the sliding rod penetrates through the sliding rod, the screw rod penetrates through the threaded hole and is meshed with the threaded hole, and the laser emitter is fixed on the adjusting block;

and the driving motor is arranged on the base and is used for driving the screw rod to rotate accurately.

6. The method of processing an optical fiber according to claim 1, wherein the melting step comprises: melting the optical fiber preform at 2200-2300 ℃, and drawing the fiber depending on self gravity;

the cooling process comprises the following steps: the drooping optical fiber is cooled and shaped through an optical fiber cooling device and then is further cooled through a cooling pipe.

7. The method of claim 6, wherein the coating and curing step comprises:

primary coating procedure: applying a resin to an outer surface of the optical fiber by a coating device to form a primary coating layer;

a primary curing process: curing the primary coating layer by the optical fiber through ultraviolet curing equipment;

a secondary coating procedure: coating resin on the outer surface of the primary coating layer by a coating device to form a secondary coating layer;

a secondary curing process: and (3) enabling the optical fiber to pass through ultraviolet curing equipment to cure the secondary coating.

8. The method of claim 6, wherein the coating and curing step comprises:

primary coating procedure: applying a resin to an outer surface of the optical fiber by a coating device to form a primary coating layer;

a secondary coating procedure: coating resin on the outer surface of the primary coating layer by a coating device to form a secondary coating layer;

a curing process: and the optical fiber passes through ultraviolet curing equipment to cure the primary coating layer and the secondary coating layer.

Technical Field

The invention relates to the field of optical fiber preforms, in particular to a processing method of an optical fiber.

Background

The optical fiber is obtained by heating and drawing an optical fiber preform, and the existing optical fiber production process generally comprises a melting process, a cooling process, a coating and solidifying process and a winding process. When there is the bubble in the optical fiber perform, when carrying out the wire drawing, gas line can appear in optic fibre, and the optic fibre performance that has gas line can not satisfy the requirement and intensity reduces, when maintaining original wire drawing speed, and optic fibre is easy to be cracked.

Disclosure of Invention

The invention provides a method for processing an optical fiber, aiming at the problems.

The technical scheme adopted by the invention is as follows:

the processing method of the optical fiber comprises a melting process, a cooling process, a coating solidification process and a winding process, wherein an air line detection process is arranged between the cooling process and the coating solidification process, and the air line detection process comprises the following steps:

1) transmitting a laser beam perpendicular to the optical fiber through a laser transmitter, and receiving the laser beam through a laser receiver;

2) when the intensity of the signal received by the laser receiver changes suddenly, judging that the optical fiber has a gas line, recording the initial position of the gas line, and controlling the winding device to reduce the winding speed;

3) when the signal intensity received by the laser receiver is recovered, judging that the optical fiber has no gas line, recording the end position of the gas line, and recovering the winding speed of the winding device after the gas line section of the optical fiber is completely wound on the winding disc.

According to the processing method of the optical fiber, the appearance position and the end position of the gas line can be detected on line by setting an extra gas line detection process, so that the gas line section can be processed in the later period conveniently, the winding speed of the winding equipment can be controlled to be reduced when the gas line is detected, the tension of the optical fiber is reduced, and the optical fiber is prevented from being broken due to the gas line.

The application detects the principle of gas line: laser emitter launches a branch of laser with optic fibre vertically to optic fibre, laser is received by laser receiver behind the optic fibre, the signal that laser receiver received this moment is in a settlement within range, when the gas line appears in optic fibre, the gas line can influence the propagation of the laser that gets into optic fibre, the intensity that finally makes the laser that gets into laser receiver has great change, for example intensity greatly reduced, when intensity reduces to being less than the default, judge that the gas line has appeared in the optic fibre, when intensity resumes to the scope of settlement, it does not have the gas line in the optic fibre to judge.

In an embodiment of the present invention, the gas line detection process is performed by a gas line detection device, the gas line detection device includes a laser emitter and a laser receiver, and the laser emitter and the laser receiver are respectively disposed on two sides of the optical fiber.

In one embodiment of the present invention, the gas line detecting device further includes:

the rotating motor is relatively fixed with the laser transmitter;

the sector plate has minor diameter end and major diameter end, the minor diameter end of sector plate with the axis of rotation of rotating the motor is fixed, and the major diameter end of sector plate is located laser emitter's transmitting terminal, and the major diameter end of sector plate has the different through-hole in a plurality of apertures, the through-hole is used for supplying laser to pass.

The corresponding through hole can be controlled to be matched with the transmitting end of the laser transmitter by rotating the motor, so that the diameter of the light beam can be controlled as required.

In one embodiment of the present invention, the gas line detection apparatus further includes two deviation detection mechanisms and a movement adjustment mechanism, the laser emitter is mounted on the movement adjustment mechanism, the movement adjustment mechanism is configured to drive the laser emitter to move along a direction perpendicular to laser emission, the two deviation detection mechanisms are arranged at an interval from top to bottom, the laser emitter and the laser receiver are located between the two deviation detection mechanisms, and the deviation detection mechanism includes:

the laser emitting frame assembly is used for emitting a plurality of parallel light rays, the plurality of light rays are divided into two groups, the two groups of light rays are respectively positioned on two sides of the optical fiber, and the light rays are parallel to the laser of the laser emitter;

the laser receiving frame assembly is used for receiving the light of the laser emitting frame assembly.

In the production process, the skew probably appears in optic fibre, and this can lead to on laser can not accurately beat optic fibre, can detect the skew through setting up two skew detection mechanism that the interval set up from top to bottom, and the detection principle is: the distance between two adjacent light rays is determined, when the optical fiber is deviated to shield one of the light rays, the laser receiving rack assembly can detect the optical fiber, and the optical fiber is determined to move to the position corresponding to the light ray.

The skew detection mechanism of top can detect optic fibre along the first skew of perpendicular to light direction, the skew detection mechanism of below can detect optic fibre along the second skew of perpendicular to light direction, vertical position through top skew detection mechanism, the vertical position of below skew detection mechanism, first skew, the distance that laser emitter needs to be followed perpendicular to laser direction and adjusted can be calculated to the vertical position of second skew and laser emitter, then carry out accurate control through skew detection mechanism, guarantee that laser passes optic fibre perpendicularly.

In one embodiment of the present invention, the movement adjusting mechanism includes:

a base;

the sliding rod is fixed on the base;

the screw rod is rotatably arranged on the base and is parallel to the sliding rod;

the adjusting block is provided with a sliding hole and a threaded hole, the sliding rod penetrates through the sliding rod, the screw rod penetrates through the threaded hole and is meshed with the threaded hole, and the laser emitter is fixed on the adjusting block;

and the driving motor is arranged on the base and is used for driving the screw rod to rotate accurately.

In one embodiment of the present invention, the melting process comprises: melting the optical fiber preform at 2200-2300 ℃, and drawing the fiber depending on self gravity;

the cooling process comprises the following steps: the drooping optical fiber is cooled and shaped through an optical fiber cooling device and then is further cooled through a cooling pipe.

In one embodiment of the present invention, the coating and curing process includes:

primary coating procedure: applying a resin to an outer surface of the optical fiber by a coating device to form a primary coating layer;

a primary curing process: curing the primary coating layer by the optical fiber through ultraviolet curing equipment;

a secondary coating procedure: coating resin on the outer surface of the primary coating layer by a coating device to form a secondary coating layer;

a secondary curing process: and (3) enabling the optical fiber to pass through ultraviolet curing equipment to cure the secondary coating.

In one embodiment of the present invention, the coating and curing process includes:

primary coating procedure: applying a resin to an outer surface of the optical fiber by a coating device to form a primary coating layer;

a secondary coating procedure: coating resin on the outer surface of the primary coating layer by a coating device to form a secondary coating layer;

a curing process: and the optical fiber passes through ultraviolet curing equipment to cure the primary coating layer and the secondary coating layer.

The invention has the beneficial effects that: according to the processing method of the optical fiber, the appearance position and the end position of the gas line can be detected on line by setting an extra gas line detection process, so that the gas line section can be processed in the later period conveniently, the winding speed of the winding equipment can be controlled to be reduced when the gas line is detected, the tension of the optical fiber is reduced, and the optical fiber is prevented from being broken due to the gas line.

Description of the drawings:

FIG. 1 is a schematic view of a gas line detection device;

FIG. 2 is a top view of the deflection sensing mechanism;

fig. 3 is a schematic view of the movement adjusting mechanism.

The figures are numbered:

1. a laser transmitter; 2. an optical fiber; 3. a laser receiver; 4. laser; 5. rotating the motor; 6. a sector plate; 7. a small diameter end; 8. a large diameter end; 9. a through hole; 10. a movement adjustment mechanism; 11. an offset detection mechanism; 12. a laser emitter frame assembly; 13. light rays; 14. a laser receiver frame assembly; 15. a base; 16. a slide bar; 17. a screw rod; 18. an adjusting block; 19. a slide hole; 20. a threaded hole; 21. a drive motor; 22. a coating device; 23. and (7) cooling the tube.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the optical fiber processing method comprises a melting process, a cooling process, a coating solidification process and a winding process, wherein an air line detection process is further arranged between the cooling process and the coating solidification process, and the air line detection process comprises the following steps:

1) a laser 4 perpendicular to the optical fiber 2 is emitted to the optical fiber 2 through the laser emitter 1 and received through the laser receiver 3;

2) when the intensity of the signal received by the laser receiver 3 changes suddenly, judging that the optical fiber 2 has an air line, recording the initial position of the air line, and controlling the winding device to reduce the winding speed;

3) when the intensity of the signal received by the laser receiver 3 is recovered, the optical fiber 2 is judged to have no gas line, the end position of the gas line is recorded, and the winding speed of the winding device is recovered after the gas line section of the optical fiber 2 is completely wound on the winding disc.

The processing method of the optical fiber can detect the appearance position and the end position of the gas line on line by setting an extra gas line detection process, not only is the gas line section convenient to process in the later period, but also the winding device can be controlled to reduce the winding speed when the gas line is detected, the tension of the optical fiber 2 is reduced, and the optical fiber 2 is prevented from being broken due to the gas line.

The application detects the principle of gas line: laser emitter 1 launches a branch of laser 4 perpendicular with optic fibre 2 to optic fibre 2, laser 4 is received by laser receiver 3 behind optic fibre 2, the signal that laser receiver 3 received this moment is in a scope of setting for, when optic fibre 2 appeared the gas line, the gas line can influence the propagation of the laser 4 that gets into optic fibre 2, finally make the intensity of the laser 4 that gets into laser receiver 3 have great change, for example intensity greatly reduced, when intensity reduces to being less than the default, judge that the gas line has appeared in optic fibre 2, when intensity resumes to the scope of setting for, it does not have the gas line in the optic fibre 2 to judge.

As shown in fig. 1, in the present embodiment, the gas line detection process is performed by a gas line detection device, the gas line detection device includes a laser emitter 1 and a laser receiver 3, and the laser emitter 1 and the laser receiver 3 are respectively disposed on two sides of the optical fiber 2.

As shown in fig. 3, in the present embodiment, the gas line detecting device further includes:

the rotating motor 5 is fixed relative to the laser emitter 1;

sector plate 6 has minor diameter end 7 and major diameter end 8, and the minor diameter end 7 of sector plate 6 is fixed with the axis of rotation that rotates motor 5, and the major diameter end 8 of sector plate 6 is located the transmitting end of laser emitter 1, and the major diameter end 8 of sector plate 6 has the different through-hole 9 of a plurality of apertures, and through-hole 9 is used for supplying laser 4 to pass.

The corresponding through hole 9 can be controlled to be matched with the transmitting end of the laser transmitter 1 by rotating the motor 5, so that the diameter of the light beam can be controlled as required.

As shown in fig. 1 and 2, in this embodiment, the gas line detection device further includes two deviation detection mechanisms 11 and a moving adjustment mechanism 10, the laser emitter 1 is installed on the moving adjustment mechanism 10, the moving adjustment mechanism 10 is used for driving the laser emitter 1 to move along a direction perpendicular to the laser emission, the two deviation detection mechanisms 11 are arranged at an upper and lower interval, the laser emitter 1 and the laser receiver 3 are located between the two deviation detection mechanisms 11, and the deviation detection mechanism 11 includes:

the laser emitting frame assembly 12 is used for emitting a plurality of parallel light rays 13, the plurality of light rays 13 are divided into two groups, the two groups of light rays 13 are respectively positioned at two sides of the optical fiber 2, and the light rays 13 are parallel to the laser of the laser emitter 1;

and a laser receiving rack assembly 14 for receiving the light 13 from the laser emitting rack assembly 12.

In the production process, optic fibre 2 probably appears the skew, and this can lead to the laser can not accurately beat optic fibre 2 on, can detect the skew through setting up two skew detection mechanism 11 that the interval set up from top to bottom, and the detection principle is: the distance between two adjacent light beams 13 is determined, when the optical fiber 2 is shifted to block one of the light beams 13, the laser receiving rack assembly 14 can detect the shift, and the optical fiber 2 is determined to move to the position corresponding to the light beam 13.

The upper deviation detection mechanism 11 can detect first deviation of the optical fiber 2 along the direction perpendicular to the light ray 13, the lower deviation detection mechanism 11 can detect second deviation of the optical fiber 2 along the direction perpendicular to the light ray 13, the vertical position of the upper deviation detection mechanism 11, the vertical position of the lower deviation detection mechanism 11, the first deviation, the distance of the laser emitter 1 needing to be adjusted along the direction perpendicular to the laser can be calculated through the vertical positions of the second deviation and the laser emitter 1, then accurate control is carried out through the deviation detection mechanism 11, and the fact that the laser perpendicularly penetrates through the optical fiber 2 is guaranteed.

As shown in fig. 3, in the present embodiment, the movement adjusting mechanism 10 includes:

a base 15;

a slide bar 16 fixed on the base 15;

the screw rod 17 is rotatably arranged on the base 15 and is parallel to the sliding rod 16;

the adjusting block 18 is provided with a sliding hole 19 and a threaded hole 20, the sliding rod 16 penetrates through the sliding rod 16, the screw rod 17 penetrates through the threaded hole 20 and is meshed with the threaded hole 20, and the laser emitter 1 is fixed on the adjusting block 18;

and the driving motor 21 is arranged on the base 15 and is used for driving the screw rod 17 to rotate accurately.

In this embodiment, the melting process is: melting the optical fiber 2 preform at 2200-2300 ℃, and drawing the fiber depending on self gravity;

the cooling process comprises the following steps: the drooping optical fiber 2 is firstly cooled and shaped by the optical fiber 2 cooling device and then is further cooled by the cooling pipe 23.

In this embodiment, the coating and curing process includes:

primary coating procedure: applying a resin to the outer surface of the optical fiber 2 by the coating device 22 to form a primary coating layer;

a primary curing process: the optical fiber 2 passes through ultraviolet light curing equipment to cure the primary coating layer;

a secondary coating procedure: applying a resin on an outer surface of the primary coating layer by the coating device 22 to form a secondary coating layer;

a secondary curing process: the optical fiber 2 passes through the ultraviolet light curing device to cure the secondary coating layer.

In other embodiments, the coating and curing process may include:

primary coating procedure: applying a resin to the outer surface of the optical fiber 2 by the coating device 22 to form a primary coating layer;

a secondary coating procedure: applying a resin on an outer surface of the primary coating layer by the coating device 22 to form a secondary coating layer;

a curing process: the optical fiber 2 passes through the ultraviolet light curing device to cure the primary coating layer and the secondary coating layer.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.