Optical fiber winding device and optical fiber macrobend loss testing equipment

Abstract

The utility model provides a kind of optical fiber winding device and optical fiber macrobending loss test equipment, it is related to optical fiber detection technical field, the optical fiber winding device includes test table, winding shaft and rotation drive mechanism, winding shaft includes main shaft and convex axle, main shaft rotation is set on test table, convex axle is set in main shaft middle part position, and the axial direction of convex axle is perpendicular with the axial direction of main shaft;Rotation drive mechanism is set on test table, and the rotation end of rotation drive mechanism is connected with main shaft. Main shaft and convex axle are connected to form T-shaped winding framework, so that optical fiber is folded and simultaneously winds from T-shaped winding framework middle to both ends, realizes the coupling state of both ends optical fiber unchanged condition, effectively avoids optical fiber torsion in winding process.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber testing technology, and in particular to an optical fiber winding device and an optical fiber macrobending loss testing device. Background Technology

[0002] Optical fiber has seen rapid development in fiber optic communication and sensing due to its advantages such as strong anti-interference capability, light weight, small size, corrosion resistance, good electrical insulation, and safety and reliability. However, in practical applications, optical fibers are prone to bending, resulting in macro-bending loss, which is highly detrimental to long-distance optical signal transmission. Therefore, testing the macro-bending loss of optical fibers and understanding their macro-bending loss performance is of great significance for optical fiber communication.

[0003] For example, patent CN219870226U discloses a fiber macrobending loss testing device. This device involves extending the fiber under test (DUT) from a first fiber optic coil onto a mandrel. Rotating the rocker arm causes the mandrel to rotate, resulting in the DUT being wound 100 times around the threaded track of the mandrel. A fixing adhesive is then used to secure the DUT to the mandrel. An optical time-domain reflectometer (OTDR) is directly connected to the end of the DUT on the mandrel via a connecting fiber. The test results yield the macrobending loss of the fiber under bending conditions. However, during the test, fixing both ends of the fiber and then winding it 100 times creates significant torque, which can cause knots and internal torque, affecting the accuracy of the test results. Utility Model Content

[0004] In view of this, the present invention proposes an optical fiber winding device and an optical fiber macrobending loss testing device, which can solve the problems of optical fiber kinking and poor repeatability caused by optical fiber winding.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides an optical fiber winding device, comprising: Test bench; A winding shaft includes a main shaft and a cam shaft. The main shaft is rotatably mounted on the test bench, and the cam shaft is located at the center of the main shaft, with its axial direction perpendicular to the axial direction of the main shaft. A rotation drive mechanism is mounted on the test bench, and the rotating end of the rotation drive mechanism is connected to the main shaft.

[0006] Based on the above technical solutions, preferably, the test bench is provided with a stand, the main shaft is provided on the stand, the rotation drive mechanism includes a rotation driver provided on the test bench, and a transmission component is provided on the stand, the transmission component drivingly connecting the rotation driver and the main shaft.

[0007] More preferably, the transmission component includes a first rotating component, a second rotating component, and a transmission connector that transmits power between the first rotating component and the second rotating component. The first rotating component is connected to the rotation driver, the second rotating component is connected to the main shaft, and a handwheel connected to the second rotating component is also provided on the upright.

[0008] More preferably, a detector is provided on the spindle, the detector is used to detect the number of rotations of the spindle, and a display screen electrically connected to the detector is provided on the test bench.

[0009] More preferably, the test bench is equipped with a controller, which is electrically connected to both the rotary drive and the detector, and the controller is used to control the start and stop of the rotary drive.

[0010] More preferably, the test bench is equipped with a start / stop control button that is electrically connected to the controller.

[0011] More preferably, the test bench is equipped with an emergency stop control button that is electrically connected to the controller.

[0012] Based on the above technical solutions, preferably, the diameter of the main shaft is the same as the diameter of the cam shaft.

[0013] Based on the above technical solutions, preferably, the spindle is fitted with a washer, the washer comprising a first part and a second part, the first part and the second part being respectively fitted onto the spindle along the axial direction of the spindle at both ends.

[0014] This utility model also provides an optical fiber macrobending loss testing device, including a cable laying device and the aforementioned optical fiber winding device. The cable laying device and the winding shaft are spaced apart on the test table. The cable laying device includes a cable laying frame and a double-headed screw rotatably mounted on the cable laying frame. The axial direction of the double-headed screw is parallel to the axial direction of the main shaft. Two sliders are spaced apart on the double-headed screw, and multiple cable laying rollers are spaced apart on the sliders.

[0015] The fiber winding device and fiber macrobending loss testing equipment of this invention have the following advantages over the prior art: (1) By vertically setting a convex shaft in the middle of the main shaft, the axis of the convex shaft intersects the axis of the main shaft perpendicularly. Therefore, the main shaft and the convex shaft are connected to form a T-shaped winding skeleton, so that the optical fiber can be folded in half and wound from the middle of the T-shaped winding skeleton to both ends at the same time. Under the condition that the coupling state of the optical fiber at both ends remains unchanged, the optical fiber twisting during the winding process is effectively avoided. The end of the main shaft is connected to a rotation drive mechanism. The rotation drive mechanism drives the main shaft to rotate, thereby winding the optical fiber onto the main shaft, solving the problem of optical fiber kinking and poor repeatability when the optical fiber is coiled. (2) The first rotating component is driven to rotate by a rotary driver, and the main shaft is driven to rotate under the transmission action of the transmission connector and the second rotating component, thereby realizing the electric drive winding of the optical fiber. In addition, the second rotating component can also be driven to rotate by rotating the handwheel, thereby driving the rotation of the main shaft and realizing the manual drive winding of the optical fiber. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the optical fiber winding device of this utility model; Figure 2 This is a front view of the optical fiber winding device of this utility model; Figure 3 This is a side view of the optical fiber winding device of this utility model; Figure 4 This is a top view of the optical fiber winding device of this utility model.

[0018] Figure label: 1. Test stand; 2. Winding shaft; 21. Main shaft; 22. Cam shaft; 3. Rotary drive mechanism; 31. Rotary driver; 32. Handwheel; 4. Stand; 5. Detector; 6. Display screen; 7. Start / stop control key; 8. Emergency stop control key; 9. Support leg; 10. Washer; 101. First part; 102. Second part; 11. Cable laying device; 111. Cable laying frame; 112. Double-ended screw; 113. Slider; 114. Cable laying roller. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1 to 4 As shown, this utility model provides an optical fiber winding device, which includes a test platform 1, a winding shaft 2, and a rotation drive mechanism 3. The winding shaft 2 includes a main shaft 21 and a convex shaft 22. The main shaft 21 is rotatably mounted on the test platform 1, and the convex shaft 22 is located at the middle position of the main shaft 21, and the axial direction of the convex shaft 22 is perpendicular to the axial direction of the main shaft 21. The rotation drive mechanism 3 is mounted on the test platform 1, and the rotating end of the rotation drive mechanism 3 is connected to the main shaft 21.

[0021] By vertically setting a convex shaft 22 in the middle of the main shaft 21, with the axis of the convex shaft 22 intersecting the axis of the main shaft 21 perpendicularly, the main shaft 21 and the convex shaft 22 are connected to form a T-shaped winding skeleton. This allows the optical fiber to be folded in half and wound simultaneously from the middle of the T-shaped winding skeleton to both ends, effectively avoiding fiber twisting during the winding process while maintaining the coupling state of the optical fibers at both ends. A rotation drive mechanism 3 is connected to the end of the main shaft 21, driving the main shaft 21 to rotate, thereby winding the optical fiber onto the main shaft 21, solving the problems of fiber kinking and poor repeatability that occur when the optical fiber is coiled.

[0022] In some embodiments, a washer 10 is provided on the spindle 21. The washer 10 includes a first part 101 and a second part 102. The first part 101 and the second part 102 are respectively sleeved on the spindle 21 at both ends along the axial direction of the spindle 21. After winding, the optical fiber is still in a taut state. The tension of the optical fiber can be adjusted by removing the washer 10 from the spindle 21.

[0023] In some embodiments, the diameter of the spindle 21 is the same as the diameter of the convex shaft 22, ensuring that the bending radius of the optical fiber is consistent at any bending position, thus meeting standard requirements. During winding, the optical fiber always transitions along the same radius of curvature, thereby avoiding additional losses caused by abrupt changes in curvature. Of course, when a washer 10 is provided around the spindle 21, the diameter of the washer 10 is the same as the diameter of the convex shaft 22, thereby ensuring that the bending radius of the optical fiber is the same at any bending position during the winding process.

[0024] In some embodiments, both ends of the spindle 21 are provided with blocking rings, which are used to limit the optical fiber wound on the spindle 21, thereby preventing the optical fiber from falling off the spindle 21 when it is wound to the end of the spindle 21.

[0025] In some embodiments, the rotation drive mechanism 3 includes any component capable of driving the shaft to rotate, such as a motor, a rotary cylinder, etc. In this embodiment, a stand 4 is provided on the test bench 1, the main shaft 21 is disposed on the stand 4, and the rotation drive mechanism 3 includes a rotation driver 31 disposed on the test bench 1. A transmission component is disposed on the stand 4, and the transmission component drives the rotation driver 31 and the main shaft 21. The rotation driver 31 is disposed on the test bench 1, and both the transmission component and the main shaft 21 are disposed on the stand 4. The rotation driver 31 drives the main shaft 21 to rotate through the transmission component. The transmission component ensures the uniformity and stability of the rotation of the main shaft 21, thus ensuring the winding effect of the optical fiber. Optionally, the rotation driver 31 is a rotary motor.

[0026] Optionally, the transmission component is housed within the frame 4. The end of the main shaft 21 and the rotating end of the rotary driver 31 extend into the frame 4 and connect with the transmission component. The frame 4 protects the transmission component, ensuring the transmission stability of the rotational driving force and preventing impurities from entering the transmission component and affecting the rotation of the main shaft 21.

[0027] Optionally, the transmission component can be a pulley or a gear pair. In this embodiment, the transmission component includes a first rotating component, a second rotating component, and a transmission connector connecting the first rotating component and the second rotating component. The first rotating component is connected to the rotation driver 31, and the second rotating component is connected to the main shaft 21. A handwheel 32 connected to the second rotating component is also provided on the support frame 4. The rotation of the first rotating component is driven by the rotation driver 31, and the rotation of the main shaft 21 is driven by the transmission connector and the second rotating component, thereby realizing the electric drive winding of the optical fiber. In addition, the rotation of the second rotating component can also be driven by rotating the handwheel 32, thereby driving the rotation of the main shaft 21, thus realizing the manual drive winding of the optical fiber.

[0028] Furthermore, the transmission components can amplify or reduce the rotational driving force of the rotary driver 31 before transmitting it to the main shaft 21, thereby meeting the winding speed requirements of different testing standards. Of course, when the rotary driver 31 is powered off or when fine-tuning of the number of turns is required, the operator can rotate the handwheel 32 for manual winding, improving the device's emergency response capability and debugging flexibility.

[0029] In some embodiments, a detector 5 is provided on the spindle 21, which is used to detect the number of rotations of the spindle 21. A display screen 6 electrically connected to the detector 5 is provided on the test bench 1. The display screen 6 displays the number of rotations of the spindle 21, thereby providing real-time information on the fiber winding status and meeting testing requirements under different conditions. The detector 5 monitors the angular displacement of the spindle 21 in real time, generating a pulse signal for each rotation of the spindle 21, thus achieving accurate counting of rotations. The number of windings is displayed in real-time on the display screen 6, eliminating the need for manual reading and avoiding human counting errors. Optionally, the detector 5 can be an optical encoder or a Hall effect counter.

[0030] In some embodiments, a controller is provided on the test bench 1. The controller is electrically connected to the rotary drive 31 and the detector 5. The controller is used to control the start and stop of the rotary drive 31. The controller can control the start and stop of the rotary drive 31 in real time according to the number of revolutions fed back by the detector 5, so that the spindle 21 can automatically stop after the rotation reaches the set number of revolutions, thereby ensuring the consistency of the test.

[0031] In some embodiments, the test bench 1 is provided with a start / stop control button 7 electrically connected to the controller. The operator can start or stop the winding of the optical fiber by pressing the start / stop control button 7, which reduces the complexity of operation and makes operation more convenient.

[0032] Optionally, the test bench 1 is equipped with an emergency stop control key 8 electrically connected to the controller. When an abnormality occurs, the operator can instantly cut off the power supply to the rotary driver 31 by operating the emergency stop control key 8, thereby preventing the optical fiber from being excessively stretched and broken.

[0033] In some embodiments, each corner of the bottom of the test platform 1 is provided with a support leg 9, which serves as a support. The bottom of the support leg 9 may also be provided with a flexible pad, which may be made of materials such as rubber or silicone to increase friction and improve the stability of the test platform 1.

[0034] In summary, this application provides an optical fiber winding device. By vertically aligning a convex shaft 22 at the center of the main shaft 21, with the axis of the convex shaft 22 intersecting perpendicularly with the axis of the main shaft 21, the main shaft 21 and the convex shaft 22 connect to form a T-shaped winding skeleton. This allows the optical fiber to be folded in half and wound simultaneously from the center of the T-shaped winding skeleton to both ends, effectively preventing fiber twisting during the winding process while maintaining the coupling state of the optical fibers at both ends. A rotation drive mechanism 3 is connected to the end of the main shaft 21, driving the main shaft 21 to rotate, thereby winding the optical fiber onto the main shaft 21. This solves the problems of fiber kinking and poor repeatability that occur during fiber winding.

[0035] Reference Figures 1 to 4 This utility model also provides an optical fiber macrobending loss testing device, including the optical fiber winding device described in the above embodiments.

[0036] In some embodiments, a cable laying device 11 is further provided on the test bench 1. The cable laying device 11 is spaced apart from the winding shaft 2 on the test bench 1. The cable laying device 11 includes a cable laying frame 111 disposed on the test bench 1 and a double-ended screw 112 rotatably disposed on the cable laying frame 111. The axial direction of the double-ended screw 112 is parallel to the axial direction of the main shaft 21. Two sliders 113 are spaced apart on the double-ended screw 112, and multiple cable laying rollers 114 are spaced apart on the sliders 113. The optical fiber is folded and wound on the convex shaft 22. The two ends of the optical fiber are laid out by the multiple cable laying rollers 114 on the two sliders 113 respectively. During the rotation of the winding shaft 2, the double-ended screw 112 rotates synchronously, driving the two sliders 113 to move in a direction away from each other, thereby pulling the optical fiber from the middle to both ends to achieve uniform cable laying without stacking. Optionally, the cable laying spacing of the screw is 0.25 mm.

[0037] As an example, the test platform 1 of this device is made of aluminum alloy or stainless steel, and the part of the winding shaft 2 that contacts the optical fiber is made of polytetrafluoroethylene (PTFE), which is robust and corrosion-resistant. The diameter of the winding shaft 2 can be, for example, 30 mm or 60 mm, with a maximum tolerance of ±0.25 mm. During testing, the optical fiber sample to be tested is wound to the specified length. The position of the cable laying device 11 is adjusted to be tangent to the outer diameter of the convex shaft 22, with the convex shaft 22 pointing vertically upward. Then, the wound optical fiber is folded in half, and the middle part is gently attached to the surface of the convex shaft 22 with adhesive tape. The two ends of the optical fiber are cut and coupled to the macrobending loss test equipment for initial power testing. The drive mode is selected, and the detector 5 is zeroed. The number of winding turns is set to 50 turns, the winding direction is set, and the speed is adjusted to the minimum. The rotation driver 31 is started, and the speed is gradually increased to the appropriate position. During the winding process, it is necessary to ensure that the two ends of the optical fiber do not move. After reaching the set number of turns, the device automatically stops. The outermost ends of the optical fiber at both ends of the winding shaft 2 are fixed with adhesive tape to prevent the optical fiber from coming out. Remove the washer 10 from the winding shaft 2, adjust the optical fiber to a loose winding state, start the second power test of the macrobending loss test program, and calculate the optical fiber macrobending loss test result.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optical fiber winding device, characterized in that, include: Test stand (1); A winding shaft (2) includes a main shaft (21) and a cam shaft (22). The main shaft (21) is rotatably mounted on the test bench (1). The cam shaft (22) is located at the middle of the main shaft (21), and the axial direction of the cam shaft (22) is perpendicular to the axial direction of the main shaft (21). A rotation drive mechanism (3) is set on the test bench (1), and the rotating end of the rotation drive mechanism (3) is connected to the main shaft (21).

2. The optical fiber winding device as described in claim 1, characterized in that: The test bench (1) is provided with a stand (4), the spindle (21) is provided on the stand (4), the rotation drive mechanism (3) includes a rotation driver (31) provided on the test bench (1), the stand (4) is provided with a transmission component, and the transmission component is connected to the rotation driver (31) and the spindle (21).

3. The optical fiber winding device as described in claim 2, characterized in that: The transmission component includes a first rotating component, a second rotating component, and a transmission connector that transmits power between the first rotating component and the second rotating component. The first rotating component is connected to the rotation driver (31), and the second rotating component is connected to the main shaft (21). The stand (4) is also provided with a handwheel (32) connected to the second rotating component.

4. The optical fiber winding device as described in claim 2, characterized in that: A detector (5) is provided on the spindle (21), and the detector (5) is used to detect the number of rotations of the spindle (21). A display screen (6) is provided on the test bench (1) and is electrically connected to the detector (5).

5. The optical fiber winding device as described in claim 4, characterized in that: The test bench (1) is equipped with a controller, which is electrically connected to the rotary drive (31) and the detector (5). The controller is used to control the start and stop of the rotary drive (31).

6. The optical fiber winding device as described in claim 5, characterized in that: The test bench (1) is equipped with a start / stop control button (7) that is electrically connected to the controller.

7. The optical fiber winding device as described in claim 6, characterized in that: The test bench (1) is equipped with an emergency stop control button (8) that is electrically connected to the controller.

8. The optical fiber winding device as described in claim 1, characterized in that: The diameter of the main shaft (21) is the same as the diameter of the cam shaft (22).

9. The optical fiber winding device as described in claim 1, characterized in that: The spindle (21) is fitted with a washer (10), which includes a first part (101) and a second part (102). The first part (101) and the second part (102) are respectively fitted onto the spindle (21) at both ends along the axial direction of the spindle (21).

10. An optical fiber macrobending loss testing device, characterized in that: The device includes a wire laying device (11) and an optical fiber winding device as described in any one of claims 1 to 9. The wire laying device (11) and the winding shaft (2) are spaced apart on the test bench (1). The wire laying device (11) includes a wire laying frame (111) disposed on the test bench (1) and a double-headed screw (112) rotatably disposed on the wire laying frame (111). The axial direction of the double-headed screw (112) is parallel to the axial direction of the main shaft (21). Two sliders (113) are spaced apart on the double-headed screw (112), and a plurality of wire laying rollers (114) are spaced apart on the sliders (113).

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