A treatment optical fiber bend test device

Abstract

The utility model relates to medical optical fiber test technical field especially relates to a kind of treatment optical fiber bending test device, including test table, electric unwinding mechanism, electric winding mechanism, electric wire arrangement mechanism and bending guide mechanism, and the output end of electric unwinding mechanism is detachably provided with the optical fiber roll to be measured;The output end of electric winding mechanism is detachably provided with optical fiber winding disc;Electric unwinding mechanism and electric winding mechanism are oppositely arranged along X direction, bending guide mechanism and electric wire arrangement mechanism are oppositely arranged along Y direction, and X direction and Y direction intersect.By integrating electric unwinding mechanism, electric winding mechanism, electric wire arrangement mechanism and bending guide mechanism on test table, and using the orthogonal layout of X direction and Y direction intersection, the automatic optical fiber conveying and bending path is constructed, the technical problems of low test efficiency, high labor intensity, only sampling detection and unable to cover the whole roll optical fiber caused by manual winding in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the field of medical optical fiber testing technology, and in particular to a device for testing the bending of therapeutic optical fibers. Background Technology

[0002] With the rapid development of laser medical technology, therapeutic laser fibers are increasingly widely used in clinical settings such as surgery and physiotherapy, as exemplified by the therapeutic fiber disclosed in utility model patent CN222737986U. These fibers often require repeated bending and threading during use, placing extremely high demands on their mechanical strength and fatigue life. If the fiber has microcracks, internal defects, or uneven coatings, it is highly susceptible to breakage under bending stress, affecting not only treatment efficacy but also potential medical safety risks. Therefore, conducting bending fatigue tests on medical fibers before shipment is a crucial step in quality control.

[0003] Currently, bending tests on medical optical fibers mostly rely on manual winding. Operators need to repeatedly wind the fiber around guide wheels or fixtures of a specific radius to simulate bending conditions in actual use. This method is not only labor-intensive and inefficient, but manual winding usually only tests a small sample (e.g., tens of meters) of each roll of fiber, which cannot cover the entire roll and poses a risk of missed tests. Utility Model Content

[0004] In view of this, the present invention proposes a fiber optic bending test device, which integrates an electric unwinding mechanism, an electric winding mechanism, an electric cable laying mechanism and a bending guide mechanism on the test platform, and adopts an orthogonal layout in which the X and Y directions intersect to construct an automated fiber optic transport and bending path. This solves the technical problems of low testing efficiency, high labor intensity and the inability to cover the entire roll of fiber optic cable due to manual winding in the prior art.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a device for testing the bending of a therapeutic optical fiber, including a test platform, and an electric unwinding mechanism, an electric winding mechanism, an electric cable laying mechanism, and a bending guide mechanism disposed on the top of the test platform. The output end of the electric unwinding mechanism is detachably equipped with the fiber optic roll to be tested. The output end of the electric winding mechanism is detachably equipped with an optical fiber winding reel. The electric unwinding mechanism and the electric winding mechanism are arranged opposite each other along the X direction, and the bending guide mechanism and the electric cable laying mechanism are arranged opposite each other along the Y direction, with the X direction intersecting the Y direction.

[0006] Based on the above technical solutions, preferably, both the electric unwinding mechanism and the electric rewinding mechanism include a motor and a tray, wherein, The motor is fixed to the test bench, and its output axis passes through the surface of the test bench and is fixedly connected to the corresponding tray. The top of the tray has multiple vertically arranged protrusions; The fiber optic roll to be tested and the fiber optic take-up reel are respectively provided with multiple vertical through holes, and the through holes are inserted into the protrusions.

[0007] Based on the above technical solutions, preferably, the electric cable-laying mechanism includes an electric linear slide and a fourth ceramic wheel, wherein, The electric linear slide is vertically arranged and fixed to the test platform; The fourth ceramic wheel is rotatably mounted on the output end of the electric linear slide.

[0008] Based on the above technical solutions, preferably, the bending guide mechanism includes a first guide component, a second guide component, and a tensioning component, wherein, The first guide component, the second guide component, and the tensioning component are all mounted on the test platform; The first guide component, the second guide component, and the tensioning component are arranged in a V-shape in the horizontal plane.

[0009] Based on the above technical solutions, preferably, the first guide component and the second guide component are located on both sides of the tensioning component.

[0010] Based on the above technical solutions, preferably, the first guide assembly includes a first bracket, a gravity sensor, and a first ceramic wheel, wherein... The first bracket is fixed to the test bench; The gravity sensor is fixed to the first bracket; The first ceramic wheel is rotatably disposed at the force-receiving end of the gravity sensor.

[0011] Based on the above technical solutions, preferably, the second guide assembly includes a second bracket, a rotary encoder, and a second ceramic wheel, wherein... The second bracket is fixed to the test platform; The second ceramic wheel is rotatably mounted on the second bracket; The rotary encoder's shaft is coaxially connected to the second ceramic wheel.

[0012] Based on the above technical solutions, preferably, the tensioning assembly includes a third bracket, a spring telescopic rod, and a third ceramic wheel, wherein, The third bracket is fixed to the test stand; The spring telescopic rod is fixed to the third bracket, and its telescopic end can elastically extend and retract in the horizontal direction. The third ceramic wheel is rotatably mounted on the telescopic end of the spring telescopic rod.

[0013] Based on the above technical solutions, preferably, the test platform is a rectangular box structure with supporting legs at the bottom.

[0014] Based on the above technical solutions, preferably, the top of the test bench is equipped with an openable dust cover, wherein... The electric unwinding mechanism, the electric winding mechanism, the electric cable laying mechanism, and the bending guide mechanism are all located inside the dust cover.

[0015] The fiber optic bending testing device of this invention has the following advantages over the prior art: (1) By integrating an electric unwinding mechanism, an electric winding mechanism, an electric cable laying mechanism and a bending guide mechanism on the test bench, and adopting an orthogonal layout in which the X and Y directions intersect, it is easy to construct an automated optical fiber delivery and bending path. During testing, manual winding is not required, and continuous testing of the entire roll of therapeutic optical fiber can be achieved, improving testing efficiency, reducing labor intensity, and avoiding the risk of missed detection by manual sampling inspection.

[0016] (2) By setting up an electric unwinding mechanism and an electric winding mechanism, the tray is driven by a motor, and the protrusion on the tray is connected to the through hole on the fiber optic roll or fiber optic winding reel to facilitate the quick assembly and disassembly of the fiber optic roll or fiber optic winding reel to be tested, thereby improving the testing efficiency.

[0017] (3) By setting ceramic wheels at each guide and cable routing position, the high hardness, low friction coefficient and excellent wear resistance of ceramic materials can be utilized to significantly reduce the frictional resistance and contact wear between the optical fiber and the guide components during high-speed operation and repeated bending, effectively protecting the surface coating and core structure of the optical fiber, and extending the integrity and service life of the optical fiber during the test.

[0018] (4) By setting up an openable dust cover, external pollution can be isolated to ensure the cleanliness of the test. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a perspective view of a fiber optic bending testing device according to the present invention; Figure 2 This is a partial perspective view of a fiber optic bending testing device according to the present invention; Figure 3 This is a partial exploded view of a fiber optic bending testing device according to the present invention; Figure 4 A 3D view of the electric cable-laying mechanism; Figure 5 A three-dimensional view of the first guide component; Figure 6 A three-dimensional view of the second guide component; Figure 7 A 3D view of the tensioning component; Figure 8 This is a circuit control diagram of a fiber optic bending test device according to the present invention; Figure 9 for Figure 8 The circuit diagram at the controller; Figure 10 for Figure 8 The circuit diagram at one of the drivers; Figure 11 for Figure 8 Circuit diagram of the indicator light location; Figure 12 for Figure 8 Circuit diagram of the motor; Figure 13 for Figure 8 The circuit diagram at another driver; Figure 14 for Figure 8 The circuit diagram at the counter; Figure 15 for Figure 8 Circuit diagram of the speed controller; In the diagram: 1. Test bench; 2. Electric unwinding mechanism; 3. Electric winding mechanism; 4. Electric cable laying mechanism; 5. Bending guide mechanism; 6. Fiber optic cable roll to be tested; 7. Fiber optic cable reel; 8. Dust cover; 11. PLC controller; 12. Counter controller; 13. Motor speed controller; 14. Gravity sensor controller; 15. Cable laying mechanism controller; 16. Function switch; 17. Indicator light; 31. Motor; 32. Tray; 41. Electric linear slide; 42. Fourth ceramic wheel ; 51. First guide assembly; 52. Second guide assembly; 53. Tensioning assembly; 321. Protrusion; 511. First bracket; 512. Gravity sensor; 513. First ceramic wheel; 521. Second bracket; 522. Rotary encoder; 523. Second ceramic wheel; 531. Third bracket; 532. Spring telescopic rod; 533. Third ceramic wheel; 5321. Sleeve; 5322. Inner rod; 5323. Tension spring; 5324. Limiting ring; 5325. Wheel frame. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0027] like Figure 1-15 As shown, this utility model discloses a therapeutic optical fiber bending testing device, including a test platform 1, and an electric unwinding mechanism 2, an electric winding mechanism 3, an electric cable laying mechanism 4, and a bending guide mechanism 5 disposed on the top of the test platform 1. The output end of the electric unwinding mechanism 2 is used to install the optical fiber roll 6 to be tested, which is detachable after installation. The output end of the electric winding mechanism 3 is used to install the optical fiber winding reel 7, which is detachable after installation. The electric unwinding mechanism 2 and the electric winding mechanism 3 are arranged opposite each other along the X direction, and the bending guide mechanism 5 and the electric cable laying mechanism 4 are arranged opposite each other along the Y direction. The X and Y directions intersect, which facilitates the construction of an automated optical fiber transport and bending path. During testing, manual winding is not required, enabling continuous testing of the entire roll of therapeutic optical fiber, improving testing efficiency, reducing labor intensity, and avoiding the risk of missed detections in manual sampling inspection.

[0028] In this embodiment, both the fiber optic roll 6 and the fiber optic winding reel 7 adopt an I-beam structure, with their rotation axis set in the vertical direction, and the fiber optic cable wound around the outer cylindrical side of the I-beam.

[0029] Both the electric unwinding mechanism 2 and the electric rewinding mechanism 3 include a motor 31 and a tray 32. The motor 31 is fixed inside the test bench 1, and its output axis passes through the surface of the test bench 1 and is fixedly connected to the corresponding tray 32. The top of the tray 32 is provided with multiple vertically arranged protrusions 321. The fiber optic roll 6 and the fiber optic rewinding reel 7 are respectively provided with multiple vertical through holes. When installing the fiber optic roll 6 or the fiber optic rewinding reel 7, the through holes are inserted and engaged with the protrusions 321 to achieve rapid positioning of the fiber optic roll 6 or the fiber optic rewinding reel 7 and improve testing efficiency.

[0030] Among them, such as Figure 3 As shown, each tray 32 in the electric unwinding mechanism 2 and the electric winding mechanism 3 has four protrusions 321 on its top. One protrusion 321 is located at the center of the top of the tray 32, and the other three protrusions 321 are evenly distributed in a triangular shape around the central protrusion 321. The fiber optic roll 6 and the fiber optic winding reel 7 both adopt a standard I-beam structure, with four vertical through holes corresponding to the positions of the through holes, which perfectly match the four protrusions 321 on the tray 32. During installation, the fiber optic roll 6 or the fiber optic winding reel 7 is inserted into the tray 32 from top to bottom, so that the four through holes are respectively inserted into the four protrusions 321. The central through hole and the central protrusion 321 achieve axial positioning, and the three outer through holes and the triangularly distributed protrusions 321 work together to form a three-point centering and anti-rotation structure.

[0031] In this embodiment, the electric cable laying mechanism 4 includes an electric linear slide 41 and a fourth ceramic wheel 42. For example... Figure 4 As shown, the electric linear slide 41 can be any type of electric linear module in the prior art, such as a ball screw type or a synchronous belt type linear module. The electric linear slide 41 is vertically fixed on the test platform 1, and the fourth ceramic wheel 42 is rotatably mounted on the output end of the electric linear slide 41. During the winding process, the electric linear slide 41 drives the fourth ceramic wheel 42 to reciprocate along the axial direction (i.e., vertical) of the winding reel, guiding the optical fiber to be evenly distributed on the optical fiber winding reel 7.

[0032] In this embodiment, the bending guide mechanism 5 includes a first guide component 51, a second guide component 52, and a tensioning component 53, all of which are mounted on the test stage 1 and arranged in a V-shape in the horizontal plane. This V-shaped layout allows the optical fiber to naturally form a preset bending angle when passing through, simulating typical bending conditions in clinical use.

[0033] Specifically, the first guide assembly 51 and the second guide assembly 52 are located on both sides of the tensioning assembly 53, forming a symmetrical V-shaped structure. This arrangement ensures that the optical fiber is subjected to balanced forces on both sides of the bending area, avoiding localized stress concentration or test deviations caused by unilateral load.

[0034] like Figure 5As shown, the first guide assembly 51 includes a first bracket 511, a gravity sensor 512, and a first ceramic wheel 513. The first bracket 511 is fixed to the test bench 1, the gravity sensor 512 is mounted on the first bracket 511, and the first ceramic wheel 513 is rotatably disposed at the force-bearing end of the gravity sensor 512. When the optical fiber passes around the first ceramic wheel 513, the pressure generated by its tension is detected in real time by the gravity sensor 512 to monitor tension changes during the test process.

[0035] like Figure 6 As shown, the second guide assembly 52 includes a second bracket 521, a rotary encoder 522, and a second ceramic wheel 523. The second bracket 521 is fixed to the test bench 1, and the second ceramic wheel 523 is rotatably mounted on the second bracket 521. The shaft of the rotary encoder 522 is coaxially connected to the second ceramic wheel 523. The movement of the optical fiber drives the second ceramic wheel 523 to rotate, which in turn drives the rotary encoder 522 to output pulse signals for accurately calculating the optical fiber's running length.

[0036] like Figure 7 As shown, the tensioning assembly 53 includes a third bracket 531, a spring telescopic rod 532, and a third ceramic wheel 533. The third bracket 531 is fixed to the test bench 1, the spring telescopic rod 532 is mounted on the third bracket 531, and its telescopic end can elastically extend and retract in the horizontal direction. The third ceramic wheel 533 is rotatably disposed at the telescopic end of the spring telescopic rod 532. This structure allows the third ceramic wheel 533 to automatically adjust its position according to the fiber tension, providing a constant buffer force and maintaining tension stability during bending tests.

[0037] Among them, such as Figure 7 As shown, the spring telescopic rod 532 includes a sleeve 5321, an inner rod 5322, and a tension spring 5323. The sleeve 5321 is fixedly mounted on the third bracket 531. The inner rod 5322 serves as the telescopic component of the spring telescopic rod 532, and it slidably passes through the sleeve 5321. A wheel frame 5325 is fixedly connected to one end of the inner rod 5322, and a limit ring 5324 is fixed to the other end. A third ceramic wheel 533 is rotatably disposed inside the wheel frame 5325 for contacting the optical fiber and guiding its bending path. The tension spring 5323 is sleeved on the outside of the inner rod 5322, with one end fixedly connected to the limit ring 5324 and the other end fixedly connected to the end of the sleeve 5321.

[0038] When the fiber tension acts on the third ceramic wheel 533, the wheel frame 5325 drives the inner rod 5322 to slide and translate axially along the sleeve 5321, causing the limiting retaining ring 5324 to move away from the end face of one end of the sleeve 5321, increasing the distance between them, thereby stretching the tension spring 5323 and causing it to undergo elastic deformation. The restoring force of the tension spring 5323 then applies a reverse force to the inner rod 5322, ensuring that the third ceramic wheel 533 always maintains a moderate and stable contact pressure on the fiber.

[0039] Based on the above structure, the test bench 1 is a rectangular box structure with support legs at the bottom, providing a stable installation platform and good vibration resistance.

[0040] In addition, the test bench 1 is equipped with an openable dust cover 8 on top. The electric unwinding mechanism 2, electric winding mechanism 3, electric cable laying mechanism 4, and bending guide mechanism 5 are all located inside the dust cover 8. The dust cover 8 is closed during testing, effectively isolating external dust, fibers, or foreign objects from entering the optical fiber path, preventing contaminants from adhering to the surface of the ceramic wheel or the optical fiber, and avoiding increased friction or fiber breakage due to contamination. At the same time, the high cleanliness compatibility of the ceramic wheel itself, together with the dust cover 8, works to maintain the cleanliness of the testing environment, further extending the service life of the optical fiber and equipment.

[0041] In addition, the test bench 1 is also equipped with PLC controller 11, counter controller 12, motor speed controller 13, gravity sensor controller 14, cable laying mechanism controller 15, function switch 16 and indicator light 17 and other control and human-machine interaction components.

[0042] The PLC controller 11, as the core control unit of the entire machine, is electrically connected to the motor speed controller 13 of the electric unwinding mechanism 2 and the electric winding mechanism 3, respectively, to coordinate the unwinding and winding speeds and ensure constant tension of the optical fiber during testing. The counter controller 12 is connected to the rotary encoder 522 to receive the rotation pulses of the second ceramic wheel 523 in real time and convert them into the optical fiber running length, realizing full-coverage counting verification of the entire roll of optical fiber. The gravity sensor controller 14 is electrically connected to the gravity sensor 512 to collect the force on the first ceramic wheel 513 and dynamically monitor the tension changes during bending. The cable laying mechanism controller 15 is electrically connected to the electric linear slide table 41 and automatically adjusts the cable laying frequency according to the current roll diameter of the optical fiber winding reel 7 to ensure uniform fiber laying. The function switch 16 and indicator light 17 are set on the operation panel of the test bench 1, which facilitates users to start and stop the test, switch modes, and monitor the real-time operating status of the equipment.

[0043] The above controllers work together, in combination Figure 8 The circuit control architecture shown enables fully automated control of the entire process from unwinding, bending, cable laying to rewinding. Combined with the low-friction and high-wear-resistance characteristics of each ceramic wheel, it not only significantly improves testing efficiency and accuracy but also effectively protects the fiber surface from mechanical damage during long-term continuous operation, ensuring that test results accurately reflect the bending fatigue performance of the fiber.

[0044] The method of using the fiber optic bending testing device of this utility model is as follows: The fiber optic roll 6 to be tested is installed on the output end of the electric unwinding mechanism 2, and the fiber optic take-up reel 7 is installed on the output end of the electric take-up mechanism 3. Then, the free end of the fiber optic roll 6 is pulled out and sequentially passed around the first ceramic wheel 513, the third ceramic wheel 533, the second ceramic wheel 523 and the fourth ceramic wheel 42, and finally coiled and fixed onto the fiber optic take-up reel 7, thereby forming a complete fiber optic path on the test bench 1 that runs through unwinding, bending, aligning and rewinding.

[0045] At the start of the test, the PLC controller 11 is activated, and the electric unwinding mechanism 2 and the electric winding mechanism 3 operate synchronously: the electric unwinding mechanism 2 drives the fiber optic roll 6 to be tested to unwind at a uniform speed, and the electric winding mechanism 3 synchronously drives the fiber optic winding reel 7 to wind at a uniform speed, so that the fiber optic cable is transported along a preset path at a constant speed. During this process, the fiber optic cable forms a V-shaped bending area between the first ceramic wheel 513 and the second ceramic wheel 523 via the third ceramic wheel 533, realizing periodic bending fatigue loading on the fiber optic cable. At the same time, the electric linear slide 41 in the electric cable laying mechanism 4 drives the fourth ceramic wheel 42 to move vertically back and forth, guiding the fiber optic cable to be evenly arranged on the fiber optic winding reel 7, preventing stacking or crossing. Meanwhile, the gravity sensor 512 monitors the bending tension in real time, and the rotary encoder 522 accurately measures the fiber optic cable length. Combined with the clean environment provided by the dust cover 8, the test results are ensured to be accurate and repeatable, fully meeting the bending fatigue quality verification requirements of medical therapeutic fiber optic cables before they leave the factory.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for testing the bending of optical fibers, characterized in that: The system includes a test bench (1), and an electric unwinding mechanism (2), an electric winding mechanism (3), an electric cable laying mechanism (4), and a bending guide mechanism (5) located on top of the test bench (1). The output end of the electric unwinding mechanism (2) is detachably provided with the fiber optic roll (6) to be tested. The output end of the electric winding mechanism (3) is detachably provided with an optical fiber winding reel (7). The electric unwinding mechanism (2) and the electric winding mechanism (3) are arranged opposite each other along the X direction, and the bending guide mechanism (5) and the electric wire laying mechanism (4) are arranged opposite each other along the Y direction. The X direction and the Y direction intersect.

2. The optical fiber bending testing device as described in claim 1, characterized in that: Both the electric unwinding mechanism (2) and the electric winding mechanism (3) include a motor (31) and a tray (32), wherein, The motor (31) is fixed to the test bench (1), and its output axis passes through the table surface of the test bench (1) and is fixedly connected to the corresponding tray (32). The top of the tray (32) is provided with a plurality of vertically arranged protrusions (321). The fiber optic roll (6) to be tested and the fiber optic reel (7) are respectively provided with multiple vertical through holes, and the through holes are inserted into the protrusion (321).

3. The optical fiber bending testing device as described in claim 1, characterized in that: The bending guide mechanism (5) includes a first guide component (51), a second guide component (52), and a tensioning component (53), wherein, The first guide component (51), the second guide component (52), and the tensioning component (53) are all mounted on the test bench (1); The first guide component (51), the second guide component (52) and the tensioning component (53) are arranged in a V-shape in the horizontal plane.

4. The optical fiber bending testing device as described in claim 3, characterized in that: The first guide component (51) and the second guide component (52) are located on both sides of the tensioning component (53).

5. The optical fiber bending testing device as described in claim 3, characterized in that: The first guide assembly (51) includes a first bracket (511), a gravity sensor (512), and a first ceramic wheel (513), wherein, The first bracket (511) is fixed to the test bench (1); The gravity sensor (512) is fixed to the first bracket (511). The first ceramic wheel (513) is rotatably disposed at the force-receiving end of the gravity sensor (512).

6. The optical fiber bending testing device as described in claim 3, characterized in that: The second guide assembly (52) includes a second bracket (521), a rotary encoder (522), and a second ceramic wheel (523), wherein, The second bracket (521) is fixed to the test bench (1); The second ceramic wheel (523) is rotatably mounted on the second bracket (521); The rotating shaft of the rotary encoder (522) is coaxially connected to the second ceramic wheel (523).

7. The optical fiber bending testing device as described in claim 3, characterized in that: The tensioning assembly (53) includes a third bracket (531), a spring telescopic rod (532), and a third ceramic wheel (533), wherein, The third bracket (531) is fixed to the test bench (1); The spring telescopic rod (532) is fixed to the third bracket (531), and its telescopic end can elastically extend and retract in the horizontal direction; The third ceramic wheel (533) is rotatably disposed at the telescopic end of the spring telescopic rod (532).

8. The optical fiber bending testing device as described in claim 1, characterized in that: The electric cable laying mechanism (4) includes an electric linear slide (41) and a fourth ceramic wheel (42), wherein, The electric linear slide (41) is vertically arranged and fixed to the test platform (1). The fourth ceramic wheel (42) is rotatably mounted on the output end of the electric linear slide (41).

9. A therapeutic fiber bending testing device as described in any one of claims 1-8, characterized in that: The test bench (1) is a rectangular box structure with supporting legs at the bottom.

10. The optical fiber bending testing device as described in claim 9, characterized in that: The test bench (1) is equipped with an openable dust cover (8) on its top, wherein, The electric unwinding mechanism (2), the electric winding mechanism (3), the electric cable laying mechanism (4), and the bending guide mechanism (5) are all located inside the dust cover (8).

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