Optical fiber loose winding device with controllable length

Abstract

The utility model discloses a length-controllable optical fiber loosing and winding device, belongs to the technical field of optical fiber detection, and solves the problem that a certain length of optical fiber is inconvenient to sample and test in the prior art. The pay-off device comprises a pay-off assembly and a coil pipe assembly. The pay-off assembly comprises a winding roll wound with a sampling optical fiber and a driving mechanism; the coil pipe assembly comprises a coil pipe which is coiled into a plurality of circles, and an optical fiber tractor is arranged at the inlet end of the coil pipe. The driving mechanism drives the winding roll to rotate for a certain number of turns to achieve the technical effect of obtaining a sampling optical fiber with a certain length, compared with manual fiber winding, the length is more accurate and more controllable, meanwhile, in the sampling process, the sampling optical fiber is stably dragged into the coil pipe through the optical fiber tractor, and the sampling accuracy is improved. Through cooperation of the coil pipe and the optical fiber tractor, winding or knotting of the sampling optical fiber is avoided, automatic winding of the sampling optical fiber is completed at the same time, and a user can conveniently carry out optical fiber testing after cutting off through an optical fiber cutting knife or optical fiber scissors.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber detection technology, specifically to a loosely wound optical fiber device with controllable length. Background Technology

[0002] With the rapid development of the optical fiber communication market, the quality of optical fiber, as a key transmission medium, is receiving increasing attention. While increasing production capacity, optical fiber manufacturers are focusing more on controlling the accuracy of testing key optical fiber parameters. Taking cutoff wavelength testing as an example, depending on the testing method, requirements, and purpose, different loosely wound lengths and diameters of optical fiber may be sampled between 2 and 30 meters. Specifically, for some optical fibers simulating cabling conditions, it is usually necessary to sample and test loosely wound fibers with an outer diameter greater than 280 mm and a length of 22 meters.

[0003] In existing technologies, there are two methods for sampling 22m optical fibers. One method involves manually winding a fiber of approximately the required length. This method cannot guarantee the accuracy of the fiber winding diameter and length, and it requires highly skilled personnel, which is not conducive to rapid winding and efficiency improvement. The other method uses a loosening and winding machine for winding. Compared to manual winding, this method offers the advantages of accurate length and winding diameter, and is simple and controllable. However, the process is cumbersome, and the fiber is easily tampered with, causing inconvenience for subsequent testing. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the present invention provides a loosely wound optical fiber device with controllable length, which solves the problem that it is inconvenient to sample and test optical fibers of a certain length in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A loosely wound optical fiber device with controllable length is provided, including a pay-off assembly and a coil assembly; the pay-off assembly includes a winding reel with sampling optical fiber wound on it and a drive mechanism for driving the winding reel to rotate and release a certain length of sampling optical fiber; the coil assembly includes a coil that is coiled into multiple turns, and an optical fiber puller is provided at the inlet end of the coil for pulling the sampling optical fiber into the coil.

[0007] The beneficial effects of this solution are as follows: By driving the winding reel to rotate a certain number of times through the drive mechanism, a certain length of sample fiber is obtained. Compared with manual winding, it has the characteristics of more accurate and controllable length. At the same time, during the sampling process, the sample fiber is stably pulled into the coil by the fiber puller. The cooperation between the coil and the fiber puller not only avoids the tangling or messiness of the sample fiber, but also completes the automatic winding of the sample fiber. Moreover, the winding diameter of the sample fiber is determined each time, which makes it convenient for users to cut the fiber with a fiber cleaver or fiber scissors for fiber testing.

[0008] Furthermore, the drive mechanism includes a controller, which communicates with the encoder servo motor via a driver. The encoder servo motor is fixed on the operating platform. Through the closed-loop feedback mechanism of the encoder servo motor and the controller, the release length of the sampling optical fiber can be precisely adjusted by the control box.

[0009] Furthermore, the rotating shaft of the winding reel is rotatably mounted on the operating platform. The bottom of the winding reel contacts two rolling columns, which are symmetrically rotated on the operating platform. One of the rolling columns is connected to the output shaft of the encoder servo motor. When the winding reel is heavy, the friction between the rolling columns and the winding reel drives the reel to rotate, which can reduce the torque requirement of the encoder servo motor's output shaft.

[0010] Furthermore, the output shaft of the encoder servo motor is fixedly connected to the rotating shaft of the winding reel. When the winding reel is not heavy, directly connecting the servo motor output shaft to the winding reel's rotating shaft facilitates more precise control of the reel's rotation speed and improves the real-time responsiveness of fiber optic length control.

[0011] Furthermore, the fiber optic puller includes a negative pressure puller connected to the negative pressure system. The negative pressure puller contains a channel with axial suction force, through which one end of the sampling fiber enters the coil. The negative pressure suction method gently pulls the fiber, avoiding surface damage caused by mechanical clamping.

[0012] Furthermore, the fiber optic traction device includes two electrically driven traction wheels positioned close to each other and both mounted on the operating platform. The motors in these wheels are also servo motors connected to the controller, enabling them not only to pull the sampling fiber but also to improve the accuracy of the fiber sampling length.

[0013] Furthermore, a placement platform is provided at the bottom of the operating platform, on which the coil is placed. The inlet end of the coil extends vertically upward and is positioned on the operating platform. The placement platform provides stable support, preventing the optical fiber from becoming loose due to vibration or external interference.

[0014] Furthermore, the inner diameter of the coil is greater than 280mm. This setting of the inner diameter of the coil meets the testing standards for simulated cabled optical fibers (such as the 22-meter loosely wound optical fiber test), ensuring that the loosely wound state of the optical fiber inside the coil is consistent with the actual usage conditions.

[0015] Furthermore, the operating platform is equipped with a placement rack, which has two layers. The bottom layer of the placement rack houses the fiber optic tester, while the top layer houses the fiber optic reel. The fiber optic tester facilitates fiber optic testing of the cut sampled fiber.

[0016] Furthermore, the operating platform is equipped with an arc-shaped guide plate located between the coil inlet and the placement rack. The arc-shaped guide plate smoothly transitions the fiber optic path, preventing damage to the fiber optic cable due to sharp bends before it enters the coil. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a loosely wound optical fiber device with controllable length.

[0018] The components include: 1. Cable feeding assembly; 11. Cable reel; 12. Rolling column; 2. Coil assembly; 21. Coil; 22. Fiber optic puller; 3. Operating platform; 31. Placement table; 4. Arc-shaped guide plate; 5. Fiber optic tester; 6. Placement rack. Detailed Implementation

[0019] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0020] In existing technologies, sampling optical fibers of a certain length using manual winding or unwinding machines suffers from low sampling efficiency or messy fiber entanglement, making it inconvenient to sample optical fibers of a certain length. To solve the above problems, this application provides a length-controllable unwinding optical fiber device, including a pay-off assembly 1 and a coil assembly 2. The pay-off assembly 1 includes a winding reel 11 with the sampling optical fiber wound on it and a driving mechanism; the coil assembly 2 includes a coil 21 coiled into multiple turns, with an optical fiber puller 22 provided at the inlet end of the coil 21. This invention achieves the technical effect of obtaining a certain length of sampling optical fiber by driving the winding reel 11 to rotate a certain number of times through a driving mechanism. Compared with manual winding, it has the characteristics of more accurate and controllable length. At the same time, during the sampling process, the sampling optical fiber is stably pulled into the coil 21 by the optical fiber puller 22. The cooperation between the coil 21 and the optical fiber puller 22 not only avoids the messy winding of the sampling optical fiber, but also completes the automatic winding of the sampling optical fiber, and ensures that the diameter of each winding is the same. This makes it convenient for users to cut the optical fiber with an optical fiber cleaver or optical fiber scissors for optical fiber testing. The following is a detailed demonstration.

[0021] refer to Figure 1 The loosely wound optical fiber device with controllable length includes an operating platform 3, with a wire feeding assembly 1 and a coil assembly 2 respectively arranged above and below the operating platform 3.

[0022] Specifically, the cable delivery assembly 1 includes a cable reel 11 and a drive mechanism (not shown in the figure). The cable reel 11 is wound with sampling optical fiber, and the drive mechanism is used to drive the cable reel 11 to rotate to release a certain length of sampling optical fiber.

[0023] The drive mechanism includes a controller, which communicates with the encoder servo motor via a driver. The encoder servo motor is fixed on the operating platform 3. Through a closed-loop feedback mechanism between the encoder servo motor and the controller, precise control of the sampling fiber's release length can be achieved. In this embodiment, the release length of the sampling fiber is 22m each time.

[0024] As a transmission structure between the encoder servo motor and the winding reel 11 in this embodiment, the rotating shaft of the winding reel 11 is rotatably mounted on the placement frame 6 of the operating platform 3. The bottom of the winding reel 11 contacts two rolling columns 12, which are symmetrically rotated on the operating platform 3. One of the rolling columns 12 is connected to the output shaft of the encoder servo motor. The transmission structure with the rolling columns 12 is designed so that when the winding reel 11 is heavy, the friction between the rolling columns 12 and the winding reel 11 can drive the winding reel 11 to rotate, thereby reducing the torque requirement of the encoder servo motor output shaft.

[0025] As another transmission structure between the encoder servo motor and the winding reel 11 in this embodiment, the output shaft of the encoder servo motor is fixedly connected to the rotation shaft of the winding reel 11. Considering that when the weight of the winding reel 11 is not large, directly connecting the output shaft of the servo motor to the rotation shaft of the winding reel 11 facilitates more precise control of the rotation speed of the winding reel 11 and improves the real-time responsiveness of the fiber optic length control.

[0026] In this embodiment, considering that the winding diameter of the sampling fiber on the winding reel 11 changes during the release process, resulting in errors in the winding of the winding reel 11, this embodiment provides two solutions to further improve accuracy. One solution is to maintain a consistent winding thickness of the sampling fiber on each winding reel 11 in the initial state during each round of fiber sampling. The controller pre-sets the number of rotations of the encoder servo motor corresponding to the gradual reduction of the winding thickness on the winding reel 11 during the release process. The other solution is to install a distance sensor on the winding reel 11 that is connected to the controller. The distance sensor updates the winding diameter of the sampling fiber on the winding reel 11 in real time, and the controller obtains the number of rotations of the encoder servo motor based on the winding diameter.

[0027] Specifically, the coil assembly 2 includes a coil 21 coiled in multiple turns, with an optical fiber puller 22 at the inlet end of the coil 21 for pulling the sampling optical fiber into the coil 21. In this embodiment, the inner diameter of the coil 21 is greater than 280mm. This setting of the inner diameter of the coil 21 meets the testing standards for simulated cabled optical fibers, ensuring that the loose winding state of the optical fiber within the coil 21 is consistent with actual usage conditions.

[0028] As one structure of the fiber optic puller 22 in this embodiment, the fiber optic puller 22 includes a negative pressure puller connected to the negative pressure system. The negative pressure puller has a channel with axial adsorption force, and one end of the sampling fiber passes through the channel into the coil 21. The negative pressure adsorption method gently pulls the fiber, avoiding surface damage caused by mechanical clamping. In this embodiment, the channel of the negative pressure puller can have multiple negative pressure holes arranged in a ring and all inclined downwards. These multiple negative pressure holes are connected to the negative pressure pipe of the negative pressure system through the negative pressure port on the negative pressure puller to form an axial negative pressure. The negative pressure puller can also be an axial vacuum generator as in the prior art. Since the axial vacuum generator is prior art, its specific working principle and connection relationship will not be described in detail in this embodiment.

[0029] As another structure of the fiber optic traction device 22 in this embodiment, the fiber optic traction device 22 includes two electric traction wheels (not shown in the figure) that are close to each other and both mounted on the operating platform 3. The motors in the electric traction wheels are servo motors that are communicatively connected to the controller, which can not only pull the sampling fiber, but also improve the accuracy of the sampling length of the sampling fiber.

[0030] As a further embodiment, in order to provide stable support for the coil 21 and prevent the optical fiber from becoming loose due to vibration or external interference, a placement platform 31 is provided at the bottom of the operating platform 3. The coil 21 is placed on the placement platform 31, and the inlet end of the coil 21 extends vertically upward and is located on the operating platform 3.

[0031] As a further embodiment, to facilitate fiber optic testing of the cut sampled fiber, a placement rack 6 is provided on the operating platform 3. The placement rack 6 has two layers; the fiber optic tester 5 is located on the bottom layer of the placement rack 6, and the cable reel 11 is located on the top layer of the placement rack 6. The fiber optic tester 5 can be a PK2300 model.

[0032] As a further embodiment, the operating platform 3 is also provided with an arc-shaped guide plate 4 located between the inlet end of the coil 21 and the placement rack 6. The arc-shaped guide plate 4 smoothly transitions the optical fiber path, avoiding damage to the optical fiber due to sharp-angle bending before entering the coil 21.

[0033] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A controlled length, loose fiber device, characterized by, It includes a wire feeding assembly (1) and a coil assembly (2); The wire feeding assembly (1) includes a winding reel (11) with sampling optical fiber wound on it and a driving mechanism for driving the winding reel (11) to rotate to release a certain length of sampling optical fiber. The coil assembly (2) includes a coil (21) that is coiled in multiple loops, and an optical fiber puller (22) for pulling the sampling optical fiber into the coil (21) is provided at the inlet end of the coil (21).

2. The loosely wound optical fiber device according to claim 1, characterized in that, The drive mechanism includes a controller, which is connected to the encoder servo motor via a driver. The encoder servo motor is fixed on the operating platform (3).

3. The loose fiber device of claim 2, wherein, The rotating shaft of the winding reel (11) is rotatably mounted on the operating platform (3). The bottom of the winding reel (11) is in contact with two rolling columns (12). The two rolling columns (12) are symmetrically rotated on the operating platform (3), and one of the rolling columns (12) is connected to the output shaft of the encoder servo motor.

4. The loose fiber device of claim 2, wherein, The output shaft of the encoder servo motor is fixedly connected to the rotating shaft of the winding reel (11).

5. The loose fiber device of claim 1, wherein, The fiber optic traction device (22) includes a negative pressure traction device connected to the negative pressure system. The negative pressure traction device is provided with a channel with axial adsorption force. One end of the sampling fiber passes through the channel and enters the coil (21).

6. The loose fiber device of claim 2, wherein, The fiber optic traction device (22) includes two electric traction wheels that are close to each other and are both mounted on the operating platform (3).

7. The loose fiber device of claim 2, wherein, The bottom of the operating platform (3) is provided with a placement platform (31), and the coil (21) is placed on the placement platform (31). The inlet end of the coil (21) extends vertically upward and is located on the operating platform (3).

8. The loose fiber device of claim 1, wherein, The inner diameter of the coil (21) is greater than 280 mm.

9. The loose fiber device of claim 2, wherein, The operating platform (3) is provided with a placement rack (6), which is divided into two layers. The bottom layer of the placement rack (6) is provided with an optical fiber tester (5), and the winding reel (11) is provided on the top layer of the placement rack (6).

10. The loosely wound optical fiber device according to claim 9, characterized in that, The operating platform (3) is also provided with an arc-shaped guide plate (4) located between the inlet end of the coil (21) and the placement rack (6).

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