High-temperature-resistant flame-retardant optical cable manufacturing and shaping process

Abstract

The present application relates to the field of optical cable manufacturing, and discloses a high-temperature-resistant and flame-retardant optical cable manufacturing and shaping process, which comprises an ultraviolet curing furnace, the ultraviolet curing furnace comprises an ultraviolet curing box, the upper and lower ends of the inner wall of the ultraviolet curing box are fixedly connected with first rotating shaft groups, the first rotating shaft groups are rotatably connected with first rotating ring groups through first heating box groups, a plurality of groups of first limiting grooves are formed in the two ends of the inner wall of the ultraviolet curing box, the inner cavities of the first limiting grooves are slidably connected with second rotating shaft groups, the second rotating shaft groups are rotatably connected with second rotating ring groups through second heating box groups, one end of the second rotating shaft groups is fixedly connected with the first circular gear groups through rotating rod groups, and the first circular gear groups are rotatably connected with the ultraviolet curing box. Compared with the prior art, the present application has the advantages that the time required for curing the optical fiber is shorter, the production efficiency is improved, the power consumption of the ultraviolet curing furnace is lower, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of optical cable manufacturing, specifically to a high-temperature resistant and flame-retardant optical cable manufacturing and shaping process. Background Technology

[0002] Optical fiber cable is a type of communication cable consisting of two or more glass or plastic optical fiber cores. These optical fiber cores are located within a protective cladding and are covered by an outer plastic PVC sheath. Optical fiber communication has advantages such as large capacity, long relay distance, good confidentiality, immunity to electromagnetic interference, and saving copper materials.

[0003] In the prior art, Chinese patent document CN113031180A discloses a high-temperature flame-retardant optical fiber cable manufacturing shaping process. This process involves rolling the coated optical fiber to a certain extent using a shaping mechanism, resulting in a more uniform coating distribution on the fiber surface and improved overall wear resistance. The rolled and shaped fiber is then cooled by a cooling mechanism, and after hardening, it can be wound and collected, shortening production time and improving efficiency. However, this patent does not provide rapid curing of the coated fiber coating, resulting in a long curing time and low overall manufacturing efficiency. Furthermore, since the optical fiber moves from top to bottom during production, the coating may slide down due to gravity while waiting for curing, leading to uneven coating. To ensure effective curing, the UV curing oven used for the fiber coating is also large and consumes significant electrical energy. Therefore, this application discloses a high-temperature flame-retardant optical fiber cable manufacturing shaping process to meet the manufacturing requirements of flame-retardant optical cables. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high-temperature resistant and flame-retardant optical cable manufacturing and shaping process, which has advantages such as short optical fiber coating curing time and solves a series of problems such as low optical cable manufacturing efficiency and uneven coating coloring after optical fiber coating.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a manufacturing and shaping process for high-temperature resistant and flame-retardant optical cables, comprising the following steps:

[0006] S1. Fiber coloring: Using a fiber coloring machine and ink, the surface of the fiber is coated with various bright, smooth, stable and reliable colors;

[0007] S2, Second set of optical fiber: Select a suitable polymer material and use the extrusion method to put a suitable loose tube on the optical fiber under the corresponding process conditions. At the same time, fill the space between the tube and the optical fiber with special grease for optical fiber.

[0008] S3. Cable forming: Optical cables with different core counts are manufactured by combining different numbers of loose tubes using an optical cable forming machine.

[0009] S4. Sheath: A sheath is added to the cable after S3 treatment using an optical cable sheath extrusion machine;

[0010] In the process of preparing high-temperature resistant and flame-retardant optical cables using the above steps, a UV curing oven for optical fiber coloring is also specifically involved. The UV curing oven includes a UV curing chamber. A first rotating shaft assembly is fixedly connected to both the upper and lower ends of the inner wall of the UV curing chamber. The first rotating shaft assembly is rotatably connected to a first rotating ring assembly via a first heating chamber assembly. Several sets of first limiting grooves are provided at both ends of the inner wall of the UV curing chamber. A second rotating shaft assembly is slidably connected to the inner cavity of the first limiting groove. The second rotating shaft assembly is rotatably connected to a second rotating ring assembly via a second heating chamber assembly. One end of the second rotating shaft assembly is fixedly connected to a first spur gear assembly via a rotating rod assembly. The first spur gear assembly is rotatably connected to the UV curing chamber. An electrothermal curing chamber is fixedly connected to the top of the UV curing chamber, and a third heating wire is fixedly connected inside the electrothermal curing chamber.

[0011] Preferably, the first sprocket set meshes with a first rack, the first rack meshes with a second sprocket through a second rack, the second sprocket is fixedly sleeved with a motor assembly, and the second rack is slidably connected to a second limiting block through a first limiting block.

[0012] Preferably, one end of the first limiting block is rotatably connected to a ball, and the ball is rotatably connected to the second limiting block.

[0013] Preferably, the limiting groove group at the front end of the second rack is adapted to the first limiting rod. The first limiting rod is fixedly connected to the second limiting rod through a connecting plate. The connecting plate is fixedly connected to the second rack through a limiting spring. The second limiting rod is movably sleeved with the first rack through a limiting hole. The middle part of the ultraviolet curing box is provided with a second limiting groove and a third limiting groove. Both the second limiting groove and the third limiting groove are adapted to the second limiting rod.

[0014] Preferably, the second rack is rotatably connected to the first rack, the limiting hole is adapted to the second limiting groove, and the third limiting groove is located at the rear end of the second rack.

[0015] Preferably, the top surface of the second limiting block is C-shaped.

[0016] Preferably, a turntable is fixedly connected to one end of the first spur gear set.

[0017] Preferably, the motor assembly is fixedly connected to the ultraviolet curing chamber, and the second spur gear is rotatably connected to the ultraviolet curing chamber.

[0018] Preferably, the inner wall of the second heating box assembly is fixedly connected to a first heating wire assembly, and the inner wall of the first heating box assembly is fixedly connected to a second heating wire.

[0019] Compared with the prior art, the present invention provides a manufacturing process for high-temperature resistant and flame-retardant optical cables, which has the following advantages:

[0020] 1. The manufacturing process for this high-temperature flame-retardant optical cable involves sequentially looping the optical fiber around the outer walls of the first and second rotating ring groups. This causes the first and second rotating ring groups to coordinate and change their movement path within the ultraviolet curing chamber, increasing the time the optical fiber spends within the chamber. This allows the specified coating to be cured on the optical fiber without increasing the volume of the ultraviolet curing chamber, reducing the power consumption of the ultraviolet curing chamber and lowering the production cost of optical fiber curing.

[0021] 2. The manufacturing and shaping process of this high-temperature flame-retardant optical cable uses a third heating wire to quickly and initially cure the optical fiber passing through the inner cavity of the electrothermal curing box, so that the surface of the optical fiber coating is cured quickly. This avoids damage to the optical fiber coating after the optical fiber comes into contact with the outer walls of the first and second rotating ring groups, thus ensuring a better curing effect of the optical fiber coating.

[0022] 3. The manufacturing and shaping process of this high-temperature resistant and flame-retardant optical cable can change the movement path of the optical fiber in the ultraviolet curing chamber by means of the second rotating ring group, thereby changing the curing time of the optical fiber in the ultraviolet curing chamber, so that the optical fiber can obtain a suitable curing time and improve the curing effect of the optical fiber. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a cross-sectional three-dimensional structural diagram of the electrothermal curing box of the present invention;

[0025] Figure 3 This is a cross-sectional three-dimensional structural diagram of the ultraviolet curing chamber of the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified three-dimensional structural diagram at point A;

[0027] Figure 5 This is a schematic diagram of the connection three-dimensional structure of the second circular gear of the present invention;

[0028] Figure 6 This is a schematic diagram of the three-dimensional connection structure of the second rack of the present invention;

[0029] Figure 7This is a schematic diagram of the three-dimensional connection structure of the connecting plate of the present invention.

[0030] In the diagram: 1. UV curing chamber; 2. First rotating shaft assembly; 3. First heating chamber assembly; 4. First rotating ring assembly; 5. First limiting groove; 6. Second rotating shaft assembly; 7. Second heating chamber assembly; 8. Second rotating ring assembly; 9. Rotating rod assembly; 10. First heating wire assembly; 11. Second heating wire; 12. First spur gear assembly; 13. First rack; 14. Second rack; 15. Second spur gear; 16. Motor assembly; 17. First limiting block; 18. Second limiting block; 19. Second limiting groove; 20. Third limiting groove; 21. Sphere; 22. Limiting groove assembly; 23. First limiting rod; 24. Limiting spring; 25. Connecting plate; 26. Second limiting rod; 27. Limiting hole; 28. Electrothermal curing chamber; 29. ​​Third heating wire. Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a high-temperature resistant flame-retardant optical cable manufacturing and shaping process.

[0033] In one typical implementation of this application, such as Figure 1-7 As shown, a high-temperature resistant flame-retardant optical cable manufacturing and shaping process includes the following steps:

[0034] S1. Fiber coloring: Using a fiber coloring machine and ink, the surface of the fiber is coated with various bright, smooth, stable and reliable colors;

[0035] S2, Second set of optical fiber: Select a suitable polymer material and use the extrusion method to put a suitable loose tube on the optical fiber under the corresponding process conditions. At the same time, fill the space between the tube and the optical fiber with special grease for optical fiber.

[0036] S3. Cable forming: Optical cables with different core counts are manufactured by combining different numbers of loose tubes using an optical cable forming machine.

[0037] S4. Sheath: A sheath is added to the cable after S3 treatment using an optical cable sheath extrusion machine;

[0038] In the process of preparing high-temperature resistant and flame-retardant optical cables using the above steps, a UV curing oven for optical fiber coloring is also specifically involved. The UV curing oven includes a UV curing chamber 1. A first rotating shaft assembly 2 is fixedly connected to both the upper and lower ends of the inner wall of the UV curing chamber 1. The first rotating shaft assembly 2 is rotatably connected to a first rotating ring assembly 4 via a first heating chamber assembly 3. Several sets of first limiting grooves 5 are provided at both ends of the inner wall of the UV curing chamber 1. A second rotating shaft assembly 6 is slidably connected to the inner cavity of the first limiting groove 5. The second rotating shaft assembly 6 is rotatably connected to a second rotating ring assembly 8 via a second heating chamber assembly 7. One end of group 6 is fixedly connected to the first spur gear group 12 via rotating rod group 9. The first spur gear group 12 is rotatably connected to the ultraviolet curing chamber 1. The top of the ultraviolet curing chamber 1 is fixedly connected to an electrothermal curing chamber 28. A third heating wire 29 is fixedly connected inside the electrothermal curing chamber 28. In use, the optical fiber is sequentially wound around the outer walls of the first rotating ring group 4 and the second rotating ring group 8, so that the first rotating ring group 4 and the second rotating ring group 8 cooperate to change the movement path inside the ultraviolet curing chamber 1, thereby increasing the time the optical fiber spends inside the ultraviolet curing chamber 1 without increasing the volume of the ultraviolet curing chamber 1. It can also complete the curing of the specified coating on the optical fiber, reduce the power consumption of the ultraviolet curing chamber 1, and reduce the production cost of optical fiber curing. The first rotating ring group 4 connected to the outer wall of the first heating chamber group 3 and the second rotating ring group 8 connected to the outer wall of the second heating chamber group 7 reduce the relative friction between the first rotating ring group 4 and the second rotating ring group 8 and the optical fiber, reducing the impact of the first rotating ring group 4 and the second rotating ring group 8 on the optical fiber coating. The first limiting groove 5 is slidably connected to the second rotating shaft group 6, so that the first limiting groove 5 can limit the rotation position of the second rotating shaft group 6, so that the second rotating shaft group 6 can drive the first rotating shaft group 6 to rotate the second rotating shaft group 7. The rotation of the second heating chamber group 7 and the second rotating ring group 8 allows the second rotating ring group 8 to change the movement path of the optical fiber in the inner cavity of the ultraviolet curing chamber 1, thereby changing the curing time of the optical fiber in the inner cavity of the ultraviolet curing chamber 1. This allows the optical fiber to obtain a suitable curing time, improving the curing effect. The third heating wire 29 rapidly pre-cures the optical fiber passing through the inner cavity of the electrothermal curing chamber 28, allowing the surface of the optical fiber coating to be cured quickly. This prevents the optical fiber coating from being damaged after contact with the outer walls of the first rotating ring group 4 and the second rotating ring group 8, thus ensuring a better curing effect of the optical fiber coating.

[0039] As a preferred embodiment of this example, please refer to the appendix. Figure 5-7The first spur gear set 12 meshes with the first rack 13. The first rack 13 meshes with the second spur gear 15 via the second rack 14. The second spur gear 15 is fixedly sleeved with the motor assembly 16. The second rack 14 is slidably connected to the second limit block 18 via the first limit block 17. The top surface of the second limit block 18 is C-shaped. One end of the first limit block 17 is rotatably connected to the ball 21. The second limit block 18 is rotatably connected to the ball 21. The motor assembly 16 is fixedly connected to the ultraviolet curing chamber 1. The second spur gear 15 is rotatably connected to the ultraviolet curing chamber 1. The first spur gear set 12 meshes with the first rack 13, and the first rack 13 meshes with the second spur gear 15 via the second rack 14. The motor assembly 16 is sleeved with the second spur gear 15. This allows the motor assembly 16 to drive the second spur gear 15 to rotate, which in turn drives the second rack 14 and the first rack 13 to move. This causes the first rack 13 to drive the first spur gear set 12 to rotate, which in turn drives the rotating rod set 9 to rotate, changing the position of the second rotating shaft set 6 and altering the optical cable route. The top surface of the second limiting block 18 is C-shaped, and the second rack 14 is connected to the second limiting block 18 via the first limiting block 17. This allows the second limiting block 18 to restrict the movement of the second rack 14 via the first limiting block 17. The first limiting block 17 is connected to the second limiting block 18 via the ball 21, reducing the resistance when the first limiting block 17 moves and facilitating the movement of the second rack 14.

[0040] As a preferred embodiment of this example, please refer to the appendix. Figure 6 and 7The limiting groove 22 at the front end of the second rack 14 is adapted to the first limiting rod 23. The first limiting rod 23 is fixedly connected to the second limiting rod 26 via a connecting plate 25. The connecting plate 25 is fixedly connected to the second rack 14 via a limiting spring 24. The second limiting rod 26 is movably sleeved with the first rack 13 via a limiting hole 27. The middle part of the ultraviolet curing chamber 1 has a second limiting groove 19 and a third limiting groove 20, both of which are adapted to the second limiting rod 26. The second rack 14 is rotatably connected to the first rack 13. The limiting hole 27 is adapted to the second limiting groove 19. The third limiting groove 20 is located at the rear end of the second rack 14 and is connected to the second rack 14 via a connecting plate 25 and a limiting spring 24. The second rack 14 is fixedly connected, allowing it to restrict the movement of the connecting plate 25. The connecting plate 25 is fixedly connected to the first limiting rod 23 and the second limiting rod 26, allowing the connecting plate 25 to simultaneously drive the first limiting rod 23 and the second limiting rod 26 to move. The second limiting rod 26 is adapted to the second limiting groove 19 and the third limiting groove 20, allowing it to pass through the limiting hole 27 and adapt to either the second limiting groove 19 or the third limiting groove 20. This restricts the position of the first rack 13 after rotation and limits the meshing of the first rack 13 with the first spur gear set 12, thereby restricting the rotation of the rotating rod set 9 and limiting the curing time of the optical fiber in the ultraviolet curing chamber 1, resulting in a better curing effect for the optical fiber.

[0041] As a preferred embodiment of this example, please refer to the appendix. Figure 3-5 A turntable is fixedly connected to one end of the first spur gear set 12. A first heating wire set 10 is fixedly connected to the inner wall of the second heating box set 7. A second heating wire 11 is fixedly connected to the inner wall of the first heating box set 3. The position of the first spur gear set 12 can be easily adjusted by the turntable at one end of the first spur gear set 12, so as to avoid the first spur gear set 12 not meshing with the first rack 13. The first heating wire set 10 and the second heating wire 11 are used to further heat the optical fiber, so as to avoid the coating of the optical fiber being affected by the second heating box set 7 or the first heating box set 3, thereby improving the effect of the optical fiber coating.

[0042] The working principle of this invention is as follows: During use, the third heating wire 29 rapidly pre-cures the optical fiber passing through the inner cavity of the electrothermal curing chamber 28, allowing the surface of the optical fiber coating to cure quickly. This prevents the optical fiber coating from being damaged after contact with the outer walls of the first rotating ring group 4 and the second rotating ring group 8, thus ensuring a better curing effect for the optical fiber coating.

[0043] The optical fiber is sequentially wound around the outer walls of the first rotating ring group 4 and the second rotating ring group 8, causing the first rotating ring group 4 and the second rotating ring group 8 to cooperate in changing the movement path inside the ultraviolet curing chamber 1. This increases the time the optical fiber spends inside the ultraviolet curing chamber 1, thus enabling the curing of the specified coating on the optical fiber without increasing the volume of the ultraviolet curing chamber 1. This reduces the power consumption of the ultraviolet curing chamber 1 and lowers the production cost of optical fiber curing.

[0044] The second rotating ring assembly 8 can change the movement path of the optical fiber in the inner cavity of the ultraviolet curing chamber 1, thereby changing the curing time of the optical fiber in the inner cavity of the ultraviolet curing chamber 1, so that the optical fiber can obtain a suitable curing time and improve the curing effect. The second limiting rod 26 is adapted to the second limiting groove 19 and the third limiting groove 20, so that the second limiting rod 26 can pass through the limiting hole 27 and be adapted to the second limiting groove 19 or the third limiting groove 20, restricting the position of the first rack 13 after rotation, restricting the meshing of the first rack 13 with the first spur gear assembly 12, thereby restricting the rotation of the rotating rod assembly 9, restricting the curing time of the optical fiber in the inner cavity of the ultraviolet curing chamber 1, and making the optical fiber curing effect better.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process for high-temperature resistant and flame-retardant optical cables, characterized in that: Includes the following steps: S1. Fiber coloring: Using a fiber coloring machine and ink, the surface of the fiber is coated with various bright, smooth, stable and reliable colors; S2, Second set of optical fiber: Select a suitable polymer material and use the extrusion method to put a suitable loose tube on the optical fiber under the corresponding process conditions. At the same time, fill the space between the tube and the optical fiber with special grease for optical fiber. S3. Cable forming: Optical cables with different core counts are manufactured by combining different numbers of loose tubes using an optical cable forming machine. S4. Sheath: A sheath is added to the cable after S3 treatment using an optical cable sheath extrusion machine; In the process of preparing high-temperature resistant and flame-retardant optical cables using the above steps, a UV curing oven for optical fiber coloring is also specifically involved. The UV curing oven includes a UV curing box (1). The upper and lower ends of the inner wall of the UV curing box (1) are fixedly connected to a first rotating shaft group (2). The first rotating shaft group (2) is rotatably connected to a first rotating ring group (4) through a first heating box group (3). Several sets of first limiting grooves (5) are opened at both ends of the inner wall of the UV curing box (1). The inner cavity of the first limiting groove (5) is slidably connected to a second rotating shaft group (6). The second rotating shaft group (6) is rotatably connected to a second rotating ring group (8) through a second heating box group (7). One end of the second rotating shaft group (6) is fixedly connected to a first spur gear group (12) through a rotating rod group (9). The first spur gear group (12) is rotatably connected to the UV curing box (1). The top of the ultraviolet curing box (1) is fixedly connected to an electric heating curing box (28), and a third heating wire (29) is fixedly connected inside the electric heating curing box (28).

2. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 1, characterized in that: The first spur gear set (12) meshes with the first rack (13), the first rack (13) meshes with the second spur gear (15) through the second rack (14), the second spur gear (15) is fixedly sleeved with the motor assembly (16), and the second rack (14) is slidably connected to the second limit block (18) through the first limit block (17).

3. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 2, characterized in that: One end of the first limiting block (17) is rotatably connected to a ball (21), and the second limiting block (18) is rotatably connected to the ball (21).

4. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 2, characterized in that: The limiting groove group (22) at the front end of the second rack (14) is adapted to the first limiting rod (23). The first limiting rod (23) is fixedly connected to the second limiting rod (26) through the connecting plate (25). The connecting plate (25) is fixedly connected to the second rack (14) through the limiting spring (24). The second limiting rod (26) is movably sleeved with the first rack (13) through the limiting hole (27). The middle part of the ultraviolet curing box (1) is provided with a second limiting groove (19) and a third limiting groove (20). The second limiting groove (19) and the third limiting groove (20) are both adapted to the second limiting rod (26).

5. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 4, characterized in that: The second rack (14) is rotatably connected to the first rack (13), the limiting hole (27) is adapted to the second limiting groove (19), and the third limiting groove (20) is located at the rear end of the second rack (14).

6. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 2, characterized in that: The top surface of the second limiting block (18) is C-shaped.

7. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 1, characterized in that: A turntable is fixedly connected to one end of the first spur gear set (12).

8. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 2, characterized in that: The motor assembly (16) is fixedly connected to the ultraviolet curing chamber (1), and the second spur gear (15) is rotatably connected to the ultraviolet curing chamber (1).

9. The manufacturing and shaping process for a high-temperature resistant flame-retardant optical cable according to claim 1, characterized in that: The inner wall of the second heating box group (7) is fixedly connected to the first heating wire group (10), and the inner wall of the first heating box group (3) is fixedly connected to the second heating wire (11).

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