Cable secondary sheath plastic production fiber bundle shaking into pipe device and processing method thereof

Abstract

The application discloses a device for vibrating and feeding a fiber bundle into a tube during secondary plastic production of an optical cable and a processing method thereof. The device comprises a pay-off rack and an equipment rack. The pay-off rack is provided with a first optical fiber disc, a second optical fiber disc, a third optical fiber disc and a fourth optical fiber disc. The equipment rack is sequentially provided with a first transition wheel, a second transition wheel, a vibrating structure, a third transition wheel, an extruding machine, a warm water tank, a traction wheel and a cold water tank from an input end to an output end. The cold water tank is provided with a take-up device at an output end. The cold water tank is provided with an auxiliary traction structure. The fiber bundle and the hollow sleeve are combined in the vibrating and feeding process. The vibrating effect weakens the adhesion effect of friction, static electricity and tension between the fiber bundle and the hollow sleeve, promotes the separation and contact state, reduces mutual friction and meets the production requirements of high-speed production of the secondary sleeve or the production requirement of the fiber occupying ratio in the hollow plastic sleeve.

Description

Technical Field

[0001] This invention belongs to the technical field of optical cable processing and production equipment, and specifically relates to a fiber bundle vibration tube insertion device and its processing method for optical cable secondary sheathing production. Background Technology

[0002] Currently, the production lines for the secondary sheathing process in optical cable production are generally not very stable in terms of controlling the excess length of the optical fiber sheath and preventing the optical fiber from exceeding the standard. In order to increase the production speed of the secondary production line and to further reduce material costs, the space ratio of the optical fiber bundle inside the hollow secondary sheath is also increasing, which exacerbates the instability of the sheath and affects product quality.

[0003] To mitigate the adverse effects of the aforementioned phenomenon on product quality, the traditional approach is to increase the tension of the fiber optic cable laying device to increase the straightening force between the laying device and the traction device. This helps to eliminate or reduce the "adhesion" and "bending" effect of the inner wall of the sleeve on the optical fiber during the shrinkage of the sleeve, thus ensuring the production of qualified final secondary-coated products.

[0004] However, increasing the tension of the fiber has certain limitations. Optical fiber is an extremely fine glass fiber. In commercial production, the thickness and strength of optical fiber are designed with extreme indicators, and the force it can withstand is already at its limit. It is very fragile, and the tension it can be subjected to is extremely limited. Too much tension can easily exceed the stress that the fine optical fiber can withstand, making it easy to break or be damaged. This further increases the difficulty of secondary sleeve production, and there are obvious bottlenecks in both product quality and production speed. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a fiber bundle vibration insertion device and its processing method for secondary plastic sheathing production of optical cables. Due to the vibration effect, when the fiber bundle merges with the extruded hollow tube, the adhesion between them caused by friction, static electricity, and tension is weakened under this vibration action, promoting separation and reducing mutual friction. At the same time, it can reduce the friction force on the optical fiber caused by the inherent violent contraction movement of the tube in high-speed production or smaller types of hollow tubes, preventing the optical fiber from exceeding the stress attenuation standard. It can ensure that the fiber bundle is neat and uniformly distributed in the tube as much as possible, and can still stabilize the important excess length quality index of the optical fiber tube within the limited tension range of the optical fiber, making it more suitable for the production requirements of high-speed production of secondary tubes or the production requirements of large optical fiber occupancy ratio in hollow plastic sheaths, so as to achieve high-speed and stable production of secondary plastic sheathed products.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a fiber bundle vibration tube insertion device for secondary plastic coating production of optical cables, including a wire feeding frame and an equipment frame. The wire feeding frame is provided with a first optical fiber reel, a second optical fiber reel, a third optical fiber reel, and a fourth optical fiber reel. The equipment frame is provided with a first transition wheel, a second transition wheel, a vibration structure, a third transition wheel, an extruder, a warm water tank, a traction wheel, and a cold water tank in sequence from the input end to the output end. The cold water tank is provided with a wire take-up device at the discharge end and an auxiliary traction structure on the cold water tank.

[0007] In a preferred embodiment, the first fiber optic disk and the second fiber optic disk correspond to the first transition wheel.

[0008] In a preferred embodiment, the third and fourth fiber optic disks correspond to the second transition wheel.

[0009] In a preferred embodiment, the vibration structure includes a vibration shaft mounted on a device frame, and a vibration wheel on the vibration shaft that corresponds to and cooperates with the first transition wheel and the second transition wheel. The vibration shaft is connected to the vibration source through a transmission structure.

[0010] In a preferred embodiment, the auxiliary traction structure includes a loading plate, the bottom of which is provided with a mounting bracket connected to the cold water tank, and two sets of auxiliary wheels are symmetrically arranged on the loading plate, with a clamping elastic belt fitted on the auxiliary wheel on the same side.

[0011] In a preferred embodiment, the auxiliary wheel is provided with a limiting platform and a mating groove that cooperate with the clamping elastic band.

[0012] In a preferred embodiment, the loading plate is symmetrically provided with a limiting groove and a limiting frame. The limiting frame is provided with a movable seat that cooperates with it. The movable seat is provided with an adjusting wheel that cooperates with the clamping elastic belt. The movable seat is provided with an adjusting screw that cooperates with the positioning of the limiting groove. The adjusting screw is provided with a fastening nut.

[0013] The present invention can achieve the following beneficial effects:

[0014] (1) Due to the jitter effect, when the fiber bundle and the extruded hollow tube merge, the adhesion between them due to friction, static electricity and tension is weakened under this jitter effect, which promotes the separation contact state and reduces mutual friction.

[0015] (2) At the same time, it can reduce the friction force on the optical fiber caused by the inherent violent contraction motion of the sleeve in high-speed production or smaller hollow tubes, and prevent the optical fiber from being subjected to excessive stress attenuation.

[0016] (3) Ensure that the fiber bundle is neat and uniformly distributed in the sleeve as much as possible. This will allow the fiber to withstand a small amount of fiber tension while maintaining the stability of the important excess length quality indicators of the fiber sleeve. This will better meet the requirements of high-speed production of secondary sleeves or the production requirements of fiber occupancy ratio in large hollow plastic sleeves, so as to achieve high-speed and stable production of secondary plastic sleeve products. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the auxiliary traction structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the auxiliary traction structure of the present invention.

[0021] In the diagram: 1. Pay-off frame; 2. First fiber optic reel; 3. Second fiber optic reel; 4. Third fiber optic reel; 5. Fourth fiber optic reel; 6. First transition wheel; 7. Second transition wheel; 8. Vibration shaft; 9. Vibration wheel; 10. Transmission structure; 11. Vibration source; 12. Third transition wheel; 13. Extruder; 14. Warm water tank; 15. Traction wheel; 16. Cold water tank; 17. Take-up device; 18. Auxiliary traction; 19. Loading plate; 20. Auxiliary wheel; 21. Limiting platform; 22. Mating groove; 23. Clamping elastic band; 24. Limiting slide; 25. Limiting frame; 26. Moving seat; 27. Adjusting wheel; 28. Adjusting screw; 29. ​​Fastening nut; 30. Mounting bracket. Detailed Implementation

[0022] Example 1:

[0023] like Figure 1-3 In the process of producing fiber bundle vibration tubes for secondary plastic coating of optical cables, a wire feeding frame 1 and an equipment frame are provided. The wire feeding frame 1 is provided with a first fiber optic reel 2, a second fiber optic reel 3, a third fiber optic reel 4 and a fourth fiber optic reel 5. The equipment frame is provided with a first transition wheel 6, a second transition wheel 7, a vibration structure, a third transition wheel 12, an extruder 13, a warm water tank 14, a traction wheel 15 and a cold water tank 16 in sequence from the input end to the output end. The cold water tank 16 is provided with a take-up device 17 at the discharge end and an auxiliary traction structure 18 on the cold water tank 16.

[0024] In a preferred embodiment, the first fiber optic disk 2 and the second fiber optic disk 3 correspond to the first transition wheel 6.

[0025] In a preferred embodiment, the third fiber optic disk 4 and the fourth fiber optic disk 5 correspond to the second transition wheel 7.

[0026] In a preferred embodiment, the vibration structure includes a vibration shaft 8 mounted on a device frame, and a vibration wheel 9 on the vibration shaft 8 that corresponds to and cooperates with the first transition wheel 6 and the second transition wheel 7. The vibration shaft 8 is connected to the vibration source 11 through a transmission structure 10.

[0027] In a preferred embodiment, the auxiliary traction structure 18 includes a loading plate 19. The bottom of the loading plate 19 is provided with a mounting bracket 30 connected to the cold water tank 16. Two sets of auxiliary wheels 20 are symmetrically arranged on the loading plate 19, and a clamping elastic belt 23 is fitted on the auxiliary wheel 20 on the same side to cooperate with it.

[0028] In a preferred embodiment, the auxiliary wheel 20 is provided with a limiting platform 21 and a mating groove 22 that cooperate with the clamping elastic band 23.

[0029] In a preferred embodiment, the loading plate 19 is symmetrically provided with a limiting groove 24 and a limiting frame 25. The limiting frame 25 is provided with a movable seat 26 that cooperates with it. The movable seat 26 is provided with an adjusting wheel 27 that cooperates with the clamping elastic band 23. The movable seat 26 is provided with an adjusting screw 28 that is positioned and cooperates with the limiting groove 24. The adjusting screw 28 is provided with a fastening nut 29.

[0030] Example 2:

[0031] like Figure 1-3 In this invention, the method of use is as follows:

[0032] S1: The first fiber optic reel 2, the second fiber optic reel 3, the third fiber optic reel 4, and the fourth fiber optic reel 5 are installed on the pay-off frame 1 to store the optical fibers to be processed. These fiber optic reels provide material input for subsequent processing.

[0033] S2: The optical fibers released from each group of optical fiber disks are guided by the first transition wheel 6 and the second transition wheel 7 in a grouped manner, and smoothly enter the next processing step. The optical fibers of the first optical fiber disk 2 and the second optical fiber disk 3 correspond to the first transition wheel 6, while the optical fibers of the third optical fiber disk 4 and the fourth optical fiber disk 5 correspond to the second transition wheel 7.

[0034] S3: The vibration structure includes a vibration shaft 8 and a vibration wheel 9 on it. By cooperating with the first transition wheel 6 and the second transition wheel 7, the optical fiber undergoes a vibration process before entering the extruder 13. The vibration source 11 drives the vibration shaft 8 to rotate through the transmission structure 10 to produce the required vibration effect. This process helps to reduce or eliminate problems such as entanglement and adhesion between optical fibers and ensures that the optical fiber is smoothly inserted into the tube.

[0035] S4: The fiber bundle after vibration processing is then fed into the extruder 13, where it is wrapped with a plastic protective layer, thus completing the so-called "secondary plastic coating".

[0036] S5: The freshly extruded optical cable with plastic sheath needs to be pre-cooled in the warm water tank 14 and then pulled by the traction wheel 15 through the cold water tank 16 to accelerate cooling and fix its shape.

[0037] S6: The optical cable is supported by an auxiliary traction structure 18 located above the cold water tank 16 to ensure that the optical cable maintains appropriate tension after cooling and is eventually collected by the take-up device 17.

[0038] S7: To accommodate optical cables of different diameters or types, the auxiliary traction structure 18 is also equipped with an adjustable limit slide 24, a limit frame 25, a moving seat 26, an adjusting screw 28, and a fastening nut 29, allowing operators to adjust the position and pressure of the auxiliary wheel according to the actual situation.

[0039] The beneficial effects of this invention are as follows: Due to the vibration effect, when the optical fiber bundle merges with the extruded hollow tube, the adhesion between them due to friction, static electricity, and tension is weakened under this vibration action, promoting separation and reducing mutual friction; at the same time, it can reduce the friction force on the optical fiber caused by the inherent violent contraction movement of the tube in high-speed production or smaller types of hollow tubes, preventing the optical fiber from exceeding the stress attenuation limit; it can ensure that the optical fiber bundle is neat and uniformly distributed in the tube as much as possible, and can still make the important excess length quality index of the optical fiber tube tend to be stable within the limited tension range of the optical fiber, which is more suitable for the production requirements of high-speed production of secondary tubes or the production requirements of the optical fiber occupancy ratio in large hollow plastic tubes, so as to achieve high-speed and stable production of secondary plastic tube products.

Claims

1. A device for fiber bundle shaking and tube feeding in secondary jacketing production of optical cable, comprising a pay-off stand (1) and an equipment rack, characterized in that: The pay-off rack (1) is provided with a first optical fiber disc (2), a second optical fiber disc (3), a third optical fiber disc (4) and a fourth optical fiber disc (5), the equipment rack is sequentially provided with a first transition wheel (6), a second transition wheel (7), a vibrating structure, a third transition wheel (12), an extruding machine (13), a warm water tank (14), a traction wheel (15) and a cold water tank (16) from the input end to the output end, the cold water tank (16) is provided with a take-up device (17) at the discharge end, and the cold water tank (16) is provided with an auxiliary traction structure (18); The auxiliary traction structure (18) comprises a loading plate (19), the bottom of the loading plate (19) is provided with a mounting frame (30) connected with the cold water tank (16), and the loading plate (19) is symmetrically provided with two groups of auxiliary wheels (20); the same side auxiliary wheels (20) are sleeved with clamping elastic belts (23) matched with the same side auxiliary wheels (20); The loading plate (19) is symmetrically provided with a limiting sliding groove (24) and a limiting frame (25), the limiting frame (25) is provided with a moving seat (26) matched with the limiting frame (25), the moving seat (26) is provided with an adjusting wheel (27) matched with the clamping elastic belt (23), and the moving seat (26) is provided with an adjusting screw (28) positioned and matched with the limiting sliding groove (24), and the adjusting screw (28) is provided with a fastening nut (29).

2. The optical cable secondary overjacket plastic production fiber bundle shake-in tube device according to claim 1, characterized in that: The first optical fiber disc (2) and the second optical fiber disc (3) correspond to the first transition wheel (6).

3. The optical cable secondary overjacket plastic production fiber bundle shake-in tube device of claim 1, wherein: The third optical fiber disc (4) and the fourth optical fiber disc (5) correspond to the second transition wheel (7).

4. The optical cable secondary overjacket plastic production fiber bundle shake-in tube device of claim 1, wherein: The vibrating structure comprises a vibrating shaft (8) arranged on the equipment rack, the vibrating shaft (8) is provided with a vibrating wheel (9) matched with the first transition wheel (6) and the second transition wheel (7), and the vibrating shaft (8) is connected with a vibration source (11) through a transmission structure (10).

5. The optical cable secondary overjacket plastic production fiber bundle shake-in tube device of claim 1, wherein: The auxiliary wheel (20) is provided with a limiting table (21) matched with the clamping elastic belt (23) and a matching groove (22).

6. The processing method of the fiber bundle vibration tube insertion device for secondary sheathing of optical cables according to any one of claims 1-5, characterized in that... The method comprises the following steps: S1: the first optical fiber disc (2), the second optical fiber disc (3), the third optical fiber disc (4) and the fourth optical fiber disc (5) are installed on the pay-off rack (1) and used for storing optical fibers to be processed, so as to provide material input for subsequent processing; S2: the optical fibers released from the optical fiber discs are guided through the first transition wheel (6) and the second transition wheel (7) in groups, and enter the next processing step stably, the optical fibers of the first optical fiber disc (2) and the second optical fiber disc (3) correspond to the first transition wheel (6), and the optical fibers of the third optical fiber disc (4) and the fourth optical fiber disc (5) correspond to the second transition wheel (7); S3: the vibrating structure comprises a vibrating shaft (8) and a vibrating wheel (9) thereon, and through cooperation with the first transition wheel (6) and the second transition wheel (7), the optical fibers experience a vibrating process before entering the extruding machine (13), the vibrating source (11) drives the vibrating shaft (8) to rotate through the transmission structure (10), so as to generate the required vibrating effect, and this process helps to reduce or eliminate the problems of winding and adhesion between the optical fibers, and ensures that the optical fibers enter the pipe smoothly. S4: After the vibration treatment, the optical fiber bundle is then sent to the extruder (13), and the optical fiber bundle will be wrapped with a layer of plastic protective layer, that is, the so-called "secondary plastic coating" is completed; S5: The optical cable with plastic skin just extruded needs to be pre-cooled in the warm water tank (14) first, and then pulled through the cold water tank (16) by the traction wheel (15) to accelerate cooling and fix the shape; S6: The optical cable passes through the auxiliary traction structure (18) arranged above the cold water tank (16), which ensures that the optical cable can maintain appropriate tension after cooling, and is finally collected by the take-up reel (17); S7: In order to adapt to different diameters or types of optical cables, the auxiliary traction structure (18) is also equipped with adjustable limiting sliding groove (24), limiting frame (25), moving seat (26), adjusting screw rod (28) and fastening nut (29), allowing the operator to adjust the position and pressure of the auxiliary wheel according to the actual situation.

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