Optical fiber coating curing device and method

Abstract

The present invention provides an optical fiber coating curing device and method, belonging to the technical field of optical fiber manufacturing, including a reflective tile and an ultraviolet lamp; the reflective tile has a circular cross-section, and the optical fiber is arranged at the center of the reflective tile; the ultraviolet lamp is arranged inside the reflective tile, and the ultraviolet lamp is arranged around the center of the reflective tile. The optical fiber coating curing device provided by the present invention arranges a circle of ultraviolet lamps around the optical fiber, so that the ultraviolet intensity distribution in the area around the optical fiber is uniform, reducing the influence of the air inlet and exhaust port on the reflective tile on the ultraviolet intensity, so that the optical fiber coating is more uniform during the curing process; at the same time, by adjusting the power combination of the ultraviolet adjustable lamp, it can well support the curing requirements of the vector sensing optical fiber with a complex curing degree distribution.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical fiber manufacturing, and more specifically, relates to an optical fiber coating curing device and method. Background Art

[0002] In the optical fiber production process, a curing furnace is usually used to cure the coating layer on the outside of the optical fiber. An elliptical reflective tile is set in the curing furnace, and an ultraviolet lamp is set at one focus of the reflective tile. The optical fiber is placed at another focus of the reflective tile. During the coating curing process, the back of the optical fiber is set through the reflective cover of the reflective tile to cure the coating layer of the optical fiber.

[0003] In the prior art, since there are many ventilation holes near the two ends of the long axis of the reflective tile in the curing furnace, the reflection intensity of this part will be affected, which will cause the curing degree of the corresponding position of the optical fiber coating to be lower than that of other parts. In addition, the side of the optical fiber coating facing the ultraviolet lamp will receive more ultraviolet light, which will cause the curing degree of the corresponding coating area to be higher than that of other parts, resulting in uneven curing of the optical fiber surface coating, affecting the use effect of the optical fiber. Summary of the invention

[0004] The object of the present invention is to provide an optical fiber coating curing device and method, aiming to solve the problem of uneven coating curing caused by uneven distribution of ultraviolet light intensity in the reflective tiles of the curing furnace in the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is to provide an optical fiber coating curing device and method.

[0006] In the first aspect, the present invention provides an optical fiber coating curing device, comprising: a reflective tile with a circular cross-section, the light of which is focused at the center of the reflective tile; and an ultraviolet lamp group, which is arranged in a reflective area on the inner side of the reflective tile; the ultraviolet lamp group is provided with a plurality of ultraviolet lamps which are evenly distributed along the circumferential direction with the center of the reflective tile, and the light of the ultraviolet lamp is focused on the optical fiber at the center of the reflective tile.

[0007] In a possible implementation, the power of the ultraviolet lamp is adjustable, the ultraviolet lamp located in the first diameter direction of the reflective tile is a first adjustable lamp, and the power of the first adjustable lamp is the same; the ultraviolet lamp located in the second diameter direction of the reflective tile is a second adjustable lamp, and the power of the second adjustable lamp is the same; the first diameter direction is perpendicular to the second diameter direction, and the ultraviolet lamp located between the first adjustable lamp and the second adjustable lamp is a third adjustable lamp, and the power of the third adjustable lamp is the same.

[0008] In a possible implementation, the reflective tile is provided with an air supply hole and an air exhaust hole, and the air supply hole and the air exhaust hole are respectively arranged on two symmetrical sides of the optical fiber.

[0009] In a second aspect, the present invention provides a method for curing an optical fiber coating, which is applied to an optical fiber coating curing device as described in the first aspect, comprising the following steps:

[0010] Get fiber type information;

[0011] The power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp ultraviolet lamp is controlled according to the optical fiber type information.

[0012] In a possible implementation, the ultraviolet lamps arranged on both sides of the reflective tile axis are first adjustable lamps, the ultraviolet lamps arranged on both sides of the reflective tile axis are second adjustable lamps, and the ultraviolet lamp arranged between the first adjustable lamp and the second adjustable lamp is a third adjustable lamp;

[0013] Controlling the power of the ultraviolet lamp according to the optical fiber type information includes: controlling the power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp according to the optical fiber type information.

[0014] In a possible implementation manner, the optical fiber type information includes conventional symmetrical optical fiber information, D-type optical fiber information, and vector sensing optical fiber information.

[0015] In a possible implementation, controlling the power of the first adjustable lamp, the second adjustable lamp, and the third adjustable lamp according to the optical fiber type information includes:

[0016] After acquiring the conventional symmetrical optical fiber information, controlling the power of the first adjustable lamp and the third adjustable lamp to be standard power, and controlling the power of the second adjustable lamp to be 1.05 times the standard power - 1.1 times the standard power;

[0017] In a possible implementation, controlling the power of the first adjustable lamp, the second adjustable lamp, and the third adjustable lamp according to the optical fiber type information includes:

[0018] After acquiring the vector sensing optical fiber information, the power of the second adjustable lamp is controlled to be the standard power, the power of the first adjustable lamp is controlled to be 0.5 times the standard power - 0.7 times the standard power, and the power of the third adjustable lamp is controlled to be 0.7 times the standard power - 0.9 times the standard power;

[0019] In a possible implementation, controlling the power of the first adjustable lamp, the second adjustable lamp, and the third adjustable lamp according to the optical fiber type information includes:

[0020] After acquiring the D-type optical fiber information, the power of the first adjustable lamp is controlled to be standard power, the power of the second adjustable lamp is controlled to be 1.3 times the standard power - 1.5 times the standard power, and the power of the third adjustable lamp is controlled to be 1.1 times the standard power - 1.2 times the standard power.

[0021] In a possible implementation manner, the power of the ultraviolet lamp is adjusted by adjusting the current passing through the ultraviolet lamp or the voltage across the ultraviolet lamp.

[0022] The beneficial effect of the optical fiber coating curing device provided by the present invention is that: compared with the prior art, the optical fiber coating curing device provided by the present invention arranges a circle of ultraviolet lamps around the optical fiber, so that the ultraviolet intensity distribution in the area around the optical fiber is uniform, reducing the influence of the air inlet and exhaust port on the reflective tile on the ultraviolet intensity, thereby making the optical fiber coating more uniform during the curing process.

[0023] The beneficial effect of the optical fiber coating curing method provided by the present invention is that: compared with the prior art, the method provided by the present invention adjusts the power of each ultraviolet lamp according to the type of optical fiber after obtaining the optical fiber information, and adjusts the ultraviolet intensity at different positions of the reflective area, thereby controlling the curing speed of each area of ​​the optical fiber coating. When the optical fiber is an ordinary optical fiber, the power of the ultraviolet lamp is controlled to uniformly cure the coating. When the optical fiber is a special optical fiber, the power of the ultraviolet lamp is adjusted so that the coating can adjust the curing uniformity of the coating as required. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a fiber coating curing device provided in an embodiment of the present invention curing a conventional fiber coating;

[0026] Figure 2 A schematic diagram of a device for curing an optical fiber coating provided by an embodiment of the present invention curing a coating of a D-type optical fiber;

[0027] Figure 3 A schematic diagram of the main steps of a method for curing an optical fiber coating provided by an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Reflective tile; 11. Air supply hole; 12. Air exhaust hole; 21. First adjustable light; 22. Second adjustable light; 23. Third adjustable light. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Reference Figure 1 and Figure 3 Now, an optical fiber coating curing device and method provided by the present invention are described.

[0032] In the first aspect, the present embodiment provides a device for curing an optical fiber coating, comprising a reflective tile 1 and an ultraviolet lamp arranged inside a reflective area of ​​the reflective tile 1. The reflective tile 1 is cylindrical in shape. When curing the optical fiber coating, the optical fiber is arranged at the axial position of the reflective tile 1, and a plurality of ultraviolet lamps are arranged and arranged around the optical fiber.

[0033] The present invention provides an optical fiber coating curing device. Compared with the prior art, the optical fiber coating curing device of the present invention arranges a circle of ultraviolet lamps around the optical fiber, so that the ultraviolet intensity distribution in the area around the optical fiber is uniform, reducing the influence of the air inlet and exhaust port on the reflective tile 1 on the ultraviolet intensity, thereby making the optical fiber coating more uniform during the curing process.

[0034] Optionally, the power of the ultraviolet lamp is adjustable, the ultraviolet lamp located in the first diameter direction of the reflective tile is the first adjustable lamp 21, the ultraviolet lamp located in the second diameter direction of the reflective tile is the second adjustable lamp 22, the first diameter direction and the second diameter direction are perpendicular, and the ultraviolet lamp located between the first adjustable lamp 21 and the second adjustable lamp 22 is the third adjustable lamp 23. The power of the first adjustable lamp 21 is the same, the power of the second adjustable lamp 22 is the same, and the power of the third adjustable lamp 23 is the same.

[0035] Optionally, the reflective tile 1 is provided with an air supply hole 11 and an air exhaust hole 12, which are respectively arranged on the left and right sides of the optical fiber. The air supply hole 11 and the air exhaust hole 12 are each provided with two groups, and the number of each group is at least one. The two groups of air supply holes 11 and the two groups of air exhaust holes 12 are respectively arranged on the upper and lower sides of the optical fiber. The low-temperature air from the outside enters the interior of the reflective tile 1 through the air supply hole 11, and the high-temperature air inside the reflective tile 1 is sent out of the reflective tile 1 through the air exhaust hole 12, thereby preventing the temperature in the reflective tile 1 from being too high.

[0036] The optical fiber coating curing device provided in this embodiment also includes a control system for controlling the power of the ultraviolet lamps of the first adjustable lamp 21, the second adjustable lamp 22 and the third adjustable lamp 23. The control system includes an input adjustable lamp and a control adjustable lamp. The input adjustable lamp is used to receive the optical fiber type information input by the user and output the optical fiber type information. The control adjustable lamp is connected to the input adjustable lamp, the first adjustable lamp 21, the second adjustable lamp 22 and the third adjustable lamp 23 in communication. After receiving the optical fiber type information, the control adjustable lamp adjusts the power of the first adjustable lamp 21, the second adjustable lamp 22 and the third adjustable lamp 23.

[0037] The optical fiber type information includes conventional symmetrical optical fiber information, D-type optical fiber information and vector sensing optical fiber information.

[0038] After the adjustable lamp is controlled to receive the conventional symmetrical optical fiber information, the power of the first adjustable lamp 21 and the third adjustable lamp 23 is controlled to be the standard power, and the power of the second adjustable lamp 22 is controlled to be 1.05 times the standard power - 1.1 times the standard power.

[0039] In a preferred embodiment, the power of the second adjustable lamp 22 is 1.05 times the standard power.

[0040] In a preferred embodiment, the power of the second adjustable lamp 22 is 1.08 times the standard power.

[0041] In a preferred embodiment, the power of the second adjustable lamp 22 is 1.1 times the standard power.

[0042] After the adjustable lamp receives the vector sensing optical fiber information, the power of the second adjustable lamp 22 is controlled to be the standard power, the power of the first adjustable lamp 21 is controlled to be 0.5 times the standard power - 0.7 times the standard power, and the power of the third adjustable lamp 23 is controlled to be 0.7 times the standard power - 0.9 times the standard power.

[0043] The vector sensing optical fiber in this embodiment that changes the coating curing degree distribution is proposed for the first time based on the patent of this invention. The existing curing device cannot well support the curing requirements of the vector sensing optical fiber with a complex curing degree distribution, which is also one of the advantages of the present invention.

[0044] In a preferred embodiment, the power of the first adjustable lamp 21 is 0.5 times the standard power, and the power of the third adjustable lamp 23 is 0.7 times the standard power.

[0045] In a preferred embodiment, the power of the first adjustable lamp 21 is 0.6 times the standard power, and the power of the third adjustable lamp 23 is 0.8 times the standard power.

[0046] In a preferred embodiment, the power of the first adjustable lamp 21 is 0.7 times the standard power, and the power of the third adjustable lamp 23 is 0.9 times the standard power.

[0047] Optionally, after controlling the adjustable lamp to receive the D-type optical fiber information, the power of the first adjustable lamp 21 is controlled to be standard power, the power of the second adjustable lamp 22 is controlled to be 1.3 times the standard power - 1.5 times the standard power, and the power of the third adjustable lamp 23 is controlled to be 1.1 times the standard power - 1.2 times the standard power.

[0048] In a preferred embodiment, the power of the second adjustable lamp 22 is 1.3 times the standard power, and the power of the third adjustable lamp 23 is 1.1 times the standard power.

[0049] In a preferred embodiment, the power of the second adjustable lamp 22 is 1.4 times the standard power, and the power of the third adjustable lamp 23 is 1.15 times the standard power.

[0050] In a preferred embodiment, the power of the second adjustable lamp 22 is 1.5 times the standard power, and the power of the third adjustable lamp 23 is 1.2 times the standard power.

[0051] It should be noted that the value of the standard power is related to the moving speed of the optical fiber in the reflective tile 1. During the curing process of the coating layer, the moving speed of the optical fiber is faster, the value of the standard power is larger, and the moving speed of the optical fiber is slower, the value of the standard power is smaller. The range of standard power is 0.6 kW to 1.2 kW.

[0052] When curing the optical fiber coating, the staff inputs the optical fiber type information into the input adjustable lamp, and the input adjustable lamp sends the optical fiber type information to the control adjustable lamp, and the control adjustable lamp controls the power of the first adjustable lamp 21, the second adjustable lamp 22 and the third adjustable lamp 23 according to the optical fiber type information.

[0053] In a second aspect, this embodiment provides a method for curing an optical fiber coating, which is applied to an optical fiber coating curing device of the first aspect, and comprises the following steps:

[0054] S1. Obtain fiber type information.

[0055] S2. Control the power of the UV lamp according to the fiber type information.

[0056] Optionally, in step S2, the ultraviolet lamps arranged on the upper and lower sides of the axis of the reflective tile are the first adjustable lamps, the ultraviolet lamps arranged on the horizontal sides of the axis of the reflective tile are the second adjustable lamps, and the ultraviolet lamp arranged between the first adjustable lamp and the second adjustable lamp is the third adjustable lamp;

[0057] Controlling the power of the ultraviolet lamp according to the optical fiber type information includes: controlling the power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp according to the optical fiber type information.

[0058] Optionally, the optical fiber type information in step S1 includes conventional symmetrical optical fiber information, D-type optical fiber information and vector sensing optical fiber information.

[0059] Optionally, step S2. controlling the power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp according to the optical fiber type information, comprising:

[0060] After obtaining the conventional symmetrical optical fiber information, the power of the first adjustable lamp and the third adjustable lamp is controlled to be the standard power, and the power of the second adjustable lamp is controlled to be 1.05 times the standard power - 1.1 times the standard power.

[0061] In a preferred embodiment, the power of the first adjustable lamp is 0.5 times the standard power, and the power of the third adjustable lamp is 0.7 times the standard power.

[0062] In a preferred embodiment, the power of the first adjustable lamp is 0.6 times the standard power, and the power of the third adjustable lamp is 0.8 times the standard power.

[0063] In a preferred embodiment, the power of the first adjustable lamp is 0.7 times the standard power, and the power of the third adjustable lamp is 0.9 times the standard power.

[0064] Optionally, step S2. controlling the power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp according to the optical fiber type information, comprising:

[0065] After acquiring the vector sensing optical fiber information, the power of the second adjustable lamp is controlled to be the standard power, the power of the first adjustable lamp is controlled to be 0.5 times the standard power - 0.7 times the standard power, and the power of the third adjustable lamp is controlled to be 0.7 times the standard power - 0.9 times the standard power.

[0066] In a preferred embodiment, the power of the first adjustable lamp is 0.5 times the standard power, and the power of the third adjustable lamp is 0.7 times the standard power.

[0067] In a preferred embodiment, the power of the first adjustable lamp is 0.6 times the standard power, and the power of the third adjustable lamp is 0.8 times the standard power.

[0068] In a preferred embodiment, the power of the first adjustable lamp is 0.7 times the standard power, and the power of the third adjustable lamp is 0.9 times the standard power.

[0069] Optionally, step S2. controlling the power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp according to the optical fiber type information, comprising:

[0070] After obtaining the D-type optical fiber information, the power of the first adjustable lamp is controlled to be the standard power, the power of the second adjustable lamp is controlled to be 1.3 times the standard power - 1.5 times the standard power, and the power of the third adjustable lamp is controlled to be 1.1 times the standard power - 1.2 times the standard power.

[0071] In a preferred embodiment, the power of the second adjustable lamp is 1.3 times the standard power, and the power of the third adjustable lamp is 1.1 times the standard power.

[0072] In a preferred embodiment, the power of the second adjustable lamp is 1.4 times the standard power, and the power of the third adjustable lamp is 1.15 times the standard power.

[0073] In a preferred embodiment, the power of the second adjustable lamp is 1.5 times the standard power, and the power of the third adjustable lamp is 1.2 times the standard power.

[0074] It should be noted that the value of standard power is related to the moving speed of the optical fiber in the reflective tile. During the curing process of the coating layer, the moving speed of the optical fiber is faster, and the value of standard power is larger. The moving speed of the optical fiber is slower, and the value of standard power is smaller. The range of standard power is 0.6 kW to 1.2 kW.

[0075] Optionally, when adjusting the power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp ultraviolet lamp, the power of the ultraviolet lamp is adjusted by adjusting the current passing through the ultraviolet lamp or adjusting the voltage across the ultraviolet lamp.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical fiber coating curing device, characterized in that: include: A reflective tile (1), the reflective tile is cylindrical, and the reflective tile (1) is focused on the axis of the reflective tile (1); and An ultraviolet lamp is arranged in the reflective area inside the reflective tile (1); the ultraviolet lamp is provided in plurality and is evenly distributed along the circumference with the center of the reflective tile (1), and the light of the ultraviolet lamp is focused on the optical fiber arranged on the axis of the reflective tile (1); The power of the ultraviolet lamp is adjustable. The ultraviolet lamp located in the first diameter direction of the reflective tile is a first adjustable lamp (21), and the power of the first adjustable lamp (21) is the same; the ultraviolet lamp located in the second diameter direction of the reflective tile is a second adjustable lamp (22), and the power of the second adjustable lamp (22) is the same; the first diameter direction is perpendicular to the second diameter direction, and the ultraviolet lamp located between the first adjustable lamp (21) and the second adjustable lamp (22) is a third adjustable lamp (23), and the power of the third adjustable lamp (23) is the same.

2. The optical fiber coating curing device according to claim 1, characterized in that: The reflective tile (1) is provided with an air supply hole (11) and an air exhaust hole (12), and the air supply hole (11) and the air exhaust hole (12) are respectively arranged on two symmetrical sides of the optical fiber.

3. A method for curing an optical fiber coating, applied to an optical fiber coating curing device as claimed in any one of claims 1 to 2, characterized in that: The following steps are involved: Get fiber type information; The power of the UV lamp is controlled according to the fiber type information.

4. A method for curing an optical fiber coating as claimed in claim 3, characterized in that: The ultraviolet lamps arranged on both sides of the axis of the reflective tile above and below are the first adjustable lamps, the ultraviolet lamps arranged on both sides of the axis of the reflective tile horizontally are the second adjustable lamps, and the ultraviolet lamps arranged between the first adjustable lamp and the second adjustable lamp are the third adjustable lamps; Controlling the power of the ultraviolet lamp according to the optical fiber type information includes: controlling the power of the first adjustable lamp, the second adjustable lamp and the third adjustable lamp according to the optical fiber type information.

5. A method for curing an optical fiber coating as claimed in claim 4, characterized in that: The optical fiber type information includes conventional symmetrical optical fiber information, D-type optical fiber information and vector sensing optical fiber information.

6. A method for curing an optical fiber coating as claimed in claim 5, characterized in that: Controlling the power of the first adjustable lamp, the second adjustable lamp, and the third adjustable lamp according to the optical fiber type information includes: After acquiring the conventional symmetrical optical fiber information, the power of the first adjustable lamp and the third adjustable lamp is controlled to be standard power, and the power of the second adjustable lamp is controlled to be 1.05 times the standard power - 1.1 times the standard power.

7. A method for curing an optical fiber coating as claimed in claim 5, characterized in that: Controlling the power of the first adjustable lamp, the second adjustable lamp, and the third adjustable lamp according to the optical fiber type information includes: After acquiring the vector sensing optical fiber information, the power of the second adjustable lamp is controlled to be standard power, the power of the first adjustable lamp is controlled to be 0.5 times the standard power - 0.7 times the standard power, and the power of the third adjustable lamp is controlled to be 0.7 times the standard power - 0.9 times the standard power.

8. A method for curing an optical fiber coating as claimed in claim 5, characterized in that: Controlling the power of the first adjustable lamp, the second adjustable lamp, and the third adjustable lamp according to the optical fiber type information includes: After acquiring the D-type optical fiber information, the power of the first adjustable lamp is controlled to be standard power, the power of the second adjustable lamp is controlled to be 1.3 times the standard power - 1.5 times the standard power, and the power of the third adjustable lamp is controlled to be 1.1 times the standard power - 1.2 times the standard power.

9. A method for curing an optical fiber coating as claimed in claim 3, characterized in that: The power of the ultraviolet lamp is adjusted by adjusting the current passing through the ultraviolet lamp or the voltage across the ultraviolet lamp.

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