Optical fiber macro-bending test tool
By designing an optical fiber macrobending test fixture with an interleaved distribution of 180° continuous bending mandrel groups and a capped shaft structure, the problems of test result fluctuation and insufficient accuracy were solved, and the automation and reliability of optical fiber macrobending testing were realized.
Patent Information
- Application Number
- CN202520018017.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Existing fiber macrobend testing fixtures exhibit fluctuations and discrepancies in test results, primarily due to issues such as non-standard bend diameters, human intervention, and uneven fiber stress, leading to insufficient test accuracy and consistency.
A fiber macrobending test fixture was designed, which adopts a staggered distribution of 180° continuously bent mandrel groups, combined with a capped pivot and floating plate structure, to ensure that the fiber maintains its natural state during the test, reduce human intervention and abnormal factors, and achieve automated operation through the test handle.
It improves the accuracy and consistency of fiber macrobending testing, reduces fluctuations in test results, ensures the reliability of test results and ease of operation, and avoids test errors caused by human operating habits and uneven stress on the fiber.
Smart Images
Figure CN223581327U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of test tooling, in particular to a macro-bending test tooling for optical fiber. BACKGROUND
[0002] Macro-bending loss parameter of optical fiber is an important transmission performance parameter for characterizing bending performance of optical fiber product, with rapid development of optical fiber communication industry and extension of application scenarios, requirement and demand for bending-insensitive optical fiber are higher and higher, and test accuracy of macro-bending loss of optical fiber is particularly important.
[0003] At present, the market mainly completes the test through macro-bending test tooling and test instruments, and there are fluctuations and differences in test system results due to different test toolings, at present, macro-bending toolings have separate mandrels and combined mandrel modules, horizontal mandrels and vertical mandrels, smooth mandrels and mandrels with grooves, and various toolings have certain influences on result accuracy according to test methods, which can be classified into the following cases: in order to ensure the circle diameter, the separate mandrel tooling has circle folding stress or avoids folding, and multiple groups of circle have circle diameter inclination which is slightly larger than the standard; the single mandrel tooling has different single / double circle modes, and there are test fluctuations introduced by circle method and new bending loss introduced by additional bending caused by circle ending; the multi-mandrel tooling has test fluctuations introduced by circle method, and semi-automatic circle causes stress due to mandrel fixation and movement friction when optical fiber is loaded and bent, based on the above problems, the present application provides a macro-bending test tooling for optical fiber to accurately and quickly complete macro-bending loss test. CONTENT OF THE UTILITY MODEL
[0004] In order to improve the macro-bending test accuracy of optical fiber, the present application provides a macro-bending test tooling for optical fiber.
[0005] The macro-bending test tooling for optical fiber provided by the present application adopts the following technical solution:
[0006] A macro-bending test tooling for optical fiber, comprising a base, the surface of the base is provided with two rows of first mandrel group first rotating shafts, a plurality of second mandrel group first rotating shafts and a plurality of third mandrel group first rotating shafts, the surface of the base is also provided with two parallel guide rails, a floating plate is slidably connected to the guide rails, a plurality of waist-shaped holes for the first mandrel group first rotating shafts, the second mandrel group first rotating shafts and the third mandrel group first rotating shafts to pass through are opened through the thickness direction of the floating plate, the surface of the floating plate is provided with two rows of first mandrel group second rotating shafts corresponding to the first mandrel group first rotating shafts, a plurality of second mandrel group second rotating shafts corresponding to the second mandrel group first rotating shafts, and a plurality of third mandrel group second rotating shafts corresponding to the third mandrel group first rotating shafts, and the surface of the floating plate is also provided with a first flexible mandrel, a second flexible mandrel, a third flexible mandrel and a fourth flexible mandrel.
[0007] By adopting the above technical solution, the first, second, and third mandrel groups set in this application are continuously bent at 180° during the coiling operation, avoiding the non-standard coil diameter and force overlap caused by 360° coiling. The staggered distribution of different mandrel groups ensures that there is no interference between them when coiling with different bending diameters. At the same time, it avoids the extra small bending loops caused by fiber bending after multi-diameter coiling. The test fixture of this application has a standard coil diameter, less human intervention, fewer abnormal factors, and is convenient and simple to operate, making the macro bending test process standardized and automated, and the test results accurate and reliable.
[0008] Optionally, the surface of the floating plate is provided with a test handle.
[0009] By adopting the above technical solution, a test handle is set up to facilitate the movement of the floating plate, making the entire bending operation process controllable. Different personnel only need to place the optical fiber at the corresponding spindle group and push the handle to complete the test, avoiding test differences caused by different personnel's operating habits.
[0010] Optionally, the second spindle of the first spindle group, the second spindle of the second spindle group, and the third spindle of the third spindle group are all capped spindles.
[0011] By adopting the above technical solution, the use of a capped spindle can effectively avoid the problem of test data distortion caused by accidental jump out of the spindle assembly during fiber optic testing.
[0012] Optionally, the first rotating shaft of the first mandrel group, the first rotating shaft of the second mandrel group, and the first rotating shaft of the third mandrel group are all rotatably connected to the base, and the second rotating shaft of the first mandrel group, the second rotating shaft of the second mandrel group, and the third rotating shaft of the third mandrel group are all rotatably connected to the floating plate.
[0013] By adopting the above technical solution and using a rotating connection, the optical fiber can rotate flexibly during the coiling process as it is stretched, moved, and bent, so that the optical fiber is always in a natural state except when it is bent, avoiding additional stress caused by various operations and improving safety.
[0014] Optionally, the peripheral walls of the first rotating shaft of the first mandrel group, the first rotating shaft of the second mandrel group, and the first rotating shaft of the third mandrel group are respectively arranged to abut against the inner wall of the corresponding waist-shaped hole.
[0015] By adopting the above technical solution, the first rotating shaft of the first mandrel group, the first rotating shaft of the second mandrel group, and the first rotating shaft of the third mandrel group are abutted against the inner wall of their respective waist-shaped holes, which can limit the sliding process of the floating plate and ensure the stability of the floating plate during the sliding process.
[0016] Optionally, the first spindle of the first spindle group, the first spindle of the second spindle group, and the first spindle of the third spindle group have different diameters.
[0017] By adopting the technical scheme, the first shaft group of the first mandrel, the second mandrel group of the first shaft and the third mandrel group of the first shaft with different diameters can meet the testing requirements of optical fiber macro-bending of different diameters, and the applicability and flexibility of the testing tool are improved.
[0018] Optionally, the guide rail is provided with a baffle plate at both ends.
[0019] By adopting the technical scheme, the baffle plate can effectively prevent the floating plate from separating from the guide rail, thereby improving the stability and safety of the testing tool during operation.
[0020] Optionally, the sidewall of the base is provided with a spring handle.
[0021] By adopting the technical scheme, the spring handle facilitates the convenient movement and taking and placing of the testing tool, and the convenience and practicality of the testing tool are improved.
[0022] In summary, the present application has at least one of the following beneficial technical effects:
[0023] 1. The testing tool has few standards, less human intervention, few abnormal factors, and convenient and simple operation, so that the macro-bending testing process is standardized and automated, and the detection result is accurate and reliable;
[0024] 2. The testing handle is provided to facilitate the movement of the floating plate, so that the whole bending operation process is controlled, and different personnel only need to place the optical fiber on the corresponding mandrel group and push the handle to complete the test, thereby avoiding the test difference caused by different operation habits of different personnel;
[0025] 3. The cap shaft can effectively avoid the problem of distorted test data caused by accidental jumping out of the mandrel group during optical fiber testing. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is a top view of an optical fiber macro-bending testing tool in an embodiment of the present application.
[0027] Figure 2 is a side view of an optical fiber macro-bending testing tool in an embodiment of the present application.
[0028] Marked: 1, base; 2, guide rail; 3, floating plate; 4, spring handle; 5, baffle plate; 6, first mandrel group of first shaft; 7, first mandrel group of second shaft; 8, second mandrel group of first shaft; 9, second mandrel group of second shaft; 10, third mandrel group of first shaft; 11, third mandrel group of second shaft; 12, first flexible mandrel; 13, second flexible mandrel; 14, third flexible mandrel; 15, fourth flexible mandrel; 16, testing handle. DETAILED DESCRIPTION
[0029] The application will be further described below in conjunction with the accompanying drawings. Figures 1-2 The application will be further described below in conjunction with the accompanying drawings.
[0030] The application discloses a fiber macro-bending test tool. Referring to Figure 1 and Figure 2 , the base 1 is provided with two rows of first mandrel group first shafts 6, two second mandrel group first shafts 8 and two third mandrel group first shafts 10 on the surface, in the embodiment, the second mandrel group first shaft 8 and the third mandrel group first shaft 10 are located between the two sides of the first mandrel group first shaft 6, and the diameters of the first mandrel group first shaft 6, the second mandrel group first shaft 8 and the third mandrel group first shaft 10 are different, so as to adapt to different specifications of the fiber for macro-bending test.
[0031] Referring to Figure 1 and Figure 2 , the base 1 is provided with two parallel guide rails 2 on the surface, all the shafts are located between the two sides of the guide rails 2, the floating plate 3 is slidably connected on the guide rails 2, and the guide rails 2 are provided with baffle plates 5 at both ends to prevent the floating plate 3 from being separated from the guide rails 2; a plurality of waist-shaped holes are provided on the floating plate 3 in the thickness direction, the length direction of the waist-shaped hole is consistent with the length direction of the guide rail 2, the waist-shaped holes are provided corresponding to the first mandrel group first shaft 6, the second mandrel group first shaft 8 and the third mandrel group first shaft 10, the first mandrel group first shaft 6, the second mandrel group first shaft 8 and the third mandrel group first shaft 10 pass through the respective waist-shaped holes and abut against the inner walls of the respective waist-shaped holes, so as to ensure the stability of the sliding of the floating plate 3.
[0032] Referring to Figure 1 and Figure 2 , the floating plate 3 is provided with two rows of first mandrel group second shafts 7, two second mandrel group second shafts 9 and two third mandrel group second shafts 11 corresponding to the first mandrel group first shaft 6, the second mandrel group first shaft 8 and the third mandrel group first shaft 10 on the surface, the first mandrel group second shaft 7, the second mandrel group second shaft 9 and the third mandrel group second shaft 11 are all cap shafts, the first mandrel group first shaft 6 and the first mandrel group second shaft 7 constitute a first mandrel group, the second mandrel group first shaft 8 and the second mandrel group second shaft 9 constitute a second mandrel group, and the third mandrel group first shaft 10 and the third mandrel group second shaft 11 constitute a third mandrel group; the floating plate 3 is provided with a test handle 16 on the surface, and the first shafts and the corresponding second shafts can be dislocated by pushing the test handle 16.
[0033] Referring to Figure 1 and Figure 2, the floating plate 3 is further provided with a first flexible mandrel 12, a second flexible mandrel 13, a third flexible mandrel 14 and a third flexible mandrel 14. In the embodiment, the first mandrel group first rotating shaft 6, the second mandrel group first rotating shaft 8 and the third mandrel group first rotating shaft 10 are rotationally connected with the base 1, and the first mandrel group second rotating shaft 7, the second mandrel group second rotating shaft 9, the third mandrel group second rotating shaft 11, the first flexible mandrel 12, the second flexible mandrel 13, the third flexible mandrel 14 and the third flexible mandrel 14 are rotationally connected with the floating plate 3, so that the mandrels can rotate flexibly during the winding process, the optical fiber can be stretched, moved and bent, the optical fiber is always in a natural state except for the bending state change, additional stress caused by various operations is avoided, and safety is improved.
[0034] Referring to Figure 1 and Figure 2 The base 1 is provided with a spring handle 4 on both sides of the side wall, so as to move and take and place the test tool of the application.
[0035] The implementation principle of the optical fiber macro-bending test tool in the embodiment is as follows: the spring handle 4 is opened, the test tool is lifted and placed on the test instrument or the test table, the test handle 16 is pushed, each mandrel group on the test tool is in a staggered state, the measured optical fiber is connected with the test instrument, the optical fiber is placed in a relaxed state at the staggered position of the mandrel group corresponding to the circle diameter, the test handle 16 is pushed to the upper limit position according to the prompt of the test instrument, the corresponding circle diameter winding test is completed, the test handle 16 is pulled to the lower limit position, the optical fiber is restored to a relaxed state without winding, the next circle diameter winding is waited for, the optical fiber is placed on different mandrel groups according to the test requirement, and the test handle 16 is pushed to complete the macro-bending test of all circle diameters.
[0036] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.
Claims
1. A fiber optic macrobend test fixture, characterized by: The base (1) is provided with two rows of first core shaft group first rotating shafts (6), a plurality of second core shaft group first rotating shafts (8) and a plurality of third core shaft group first rotating shafts (10) on the surface, and the base (1) is also provided with two parallel guide rails (2) on the surface, the floating plate (3) is slidably connected on the guide rails (2), a plurality of waist-shaped holes for the first core shaft group first rotating shafts (6), the second core shaft group first rotating shafts (8) and the third core shaft group first rotating shafts (10) to pass through are provided on the floating plate (3) in the thickness direction, the floating plate (3) is provided with two rows of first core shaft group second rotating shafts (7) corresponding to the first core shaft group first rotating shafts (6), a plurality of second core shaft group second rotating shafts (9) corresponding to the second core shaft group first rotating shafts (8), and a plurality of third core shaft group second rotating shafts (11) corresponding to the third core shaft group first rotating shafts (10) on the surface, and the floating plate (3) is also provided with a first flexible core shaft (12), a second flexible core shaft (13), a third flexible core shaft (14) and a fourth flexible core shaft (15).
2. The optical fiber macrobend test fixture of claim 1, wherein: The floating plate (3) is provided with a test handle (16) on the surface.
3. The optical fiber macrobend test fixture of claim 1, wherein: The first core shaft group second rotating shafts (7), the second core shaft group second rotating shafts (9) and the third core shaft group second rotating shafts (11) are all cap rotating shafts.
4. The optical fiber macrobend test fixture of claim 1, wherein: The first core shaft group first rotating shafts (6), the second core shaft group first rotating shafts (8) and the third core shaft group first rotating shafts (10) are all rotatably connected with the base (1), and the first core shaft group second rotating shafts (7), the second core shaft group second rotating shafts (9) and the third core shaft group second rotating shafts (11) are all rotatably connected with the floating plate (3).
5. The optical fiber macrobend test fixture of claim 1, wherein: The peripheral wall of each of the first core shaft group first rotating shafts (6), the second core shaft group first rotating shafts (8) and the third core shaft group first rotating shafts (10) is abutted with the inner wall of the corresponding waist-shaped hole.
6. The optical fiber macrobend test fixture of claim 1, wherein: The first core shaft group first rotating shafts (6), the second core shaft group first rotating shafts (8) and the third core shaft group first rotating shafts (10) have different diameters.
7. The optical fiber macrobend test tool of claim 1, wherein: The guide rails (2) are both provided with baffle plates (5) at both ends.
8. The optical fiber macrobend test fixture of claim 1, wherein: The base (1) is provided with spring handles (4) on the side wall.