An optical fiber appearance inspection device and a method of using the same

Abstract

The application discloses a kind of optical fiber appearance detection device and its using method, it is related to detection technical field, including light shield box, vision camera, integrated support and guide component, light shield box is used to optical fiber detection part is shaded and protected, vision camera is set in the inside of light shield box, and vision camera is used to carry out appearance detection to optical fiber, integrated support is set in the inside of light shield box, and integrated support is used to be carried out to vision camera bearing installation, guide component is set to the end of the inner chamber of light shield box, and guide component is used to guide optical fiber.The application uses the cooperation use mode of light shield box, vision camera, integrated support and guide component, light shield box can shield the influence of external light on the operation of vision camera, to improve the accuracy of optical fiber external defect identification, and under the action of guide component, the stability of optical fiber running in light shield box can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and in particular to an optical fiber appearance inspection device and its usage method. Background Technology

[0002] Optical fiber is a flexible fiber made of glass or plastic. Its core function is to transmit information through light signals, and it is one of the core media of modern information communication.

[0003] When producing optical fibers, it is necessary not only to test their optical signal transmission performance, but also to test their appearance. The appearance quality of optical fibers directly affects their transmission performance, mechanical reliability and service life. Appearance inspection is a key link in the production and application of optical fibers.

[0004] When inspecting the appearance of optical fibers, optical imaging and machine vision technologies are mainly used to identify defects on the fiber surface and structure. In other words, when the fiber is being transported, optical equipment is used to scan its exterior directly. However, when inspecting the appearance of optical fibers, the fiber is usually exposed. This makes it susceptible to the influence of external light when the optical instruments scan the exterior of the fiber, which can lead to misjudgments and omissions in the identification and judgment system, thus resulting in certain defects. Summary of the Invention

[0005] The purpose of this invention is to provide an optical fiber appearance inspection device and its usage method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fiber optic appearance inspection device, comprising:

[0007] A light-shielding enclosure, which is used to shield the optical fiber detection section from light;

[0008] A visual camera, which is installed inside a light-shielding enclosure, is used to perform visual inspection on optical fibers.

[0009] An integrated bracket is disposed inside a light-shielding box and is used to support and mount a vision camera.

[0010] A guiding component is disposed at the end of the inner cavity of the light-shielding box, and the guiding component is used to guide the optical fiber.

[0011] Preferably, the light-shielding enclosure includes:

[0012] The first housing, wherein the integrated bracket and the guide assembly are both disposed inside the first housing;

[0013] The second housing is rotatably mounted on top of the first housing, and cable trays are provided at the ends of the first and second housings on opposite sides.

[0014] A latch is attached to one side of the first housing and the second housing.

[0015] Preferably, the integrated support includes:

[0016] A base, which is fixedly connected to the bottom of the inner wall of the first housing;

[0017] The mounting bracket is slidably snapped into the top of the base, and the vision camera is fixedly mounted on the mounting bracket;

[0018] A connecting plate is fixedly connected to the side of the mounting frame, and the side of the connecting plate is in contact with the inner wall of the first housing.

[0019] A positioning plate is fixedly connected to one side of the inner wall of the second housing, and the top of the positioning plate is attached to the top of the connecting plate.

[0020] Preferably, the integrated support further includes:

[0021] A positioning rod is fixedly connected to the top of the base, and a positioning hole is provided at the bottom of the mounting bracket. The outer wall of the positioning rod is slidably engaged with the inner cavity of the positioning hole.

[0022] A support plate is fixedly connected to the side of the inner wall of the first housing, and the top of the support plate is in contact with the connecting plate;

[0023] A limiting rod is fixedly connected to the bottom of the connecting plate, and a limiting hole is opened on the top of the bearing plate. The outer wall of the limiting rod is slidably engaged with the inner cavity of the limiting hole.

[0024] Preferably, the guiding component includes:

[0025] A fixed bracket is fixedly connected to the inside of the first housing;

[0026] A load-bearing roller is rotatably mounted on a fixed bracket and is used to limit the load-bearing position of the optical fiber.

[0027] A connecting frame and a connecting assembly, wherein the connecting frame is mounted inside the second housing via the connecting assembly;

[0028] A limiting roller is rotatably mounted on a connecting frame and is used to compress and limit the optical fiber.

[0029] Preferably, the connection component includes:

[0030] A fixing plate, the top of which is fixedly connected to the second housing;

[0031] A connecting block is fixedly connected to the side of the connecting frame. A connecting groove is provided on one side of the fixing plate, and the connecting block is slidably disposed inside the connecting groove.

[0032] A limiting spring is provided inside the connecting groove, and the bottom of the limiting spring is pressed and fitted against the connecting block.

[0033] Preferably, the connection component further includes:

[0034] A guide rod is provided inside the connecting groove, and a through hole matching the guide rod is provided on the top of the connecting block. The limiting spring is slidably sleeved on the outside of the guide rod.

[0035] A limiting collar is fixedly installed on the top of the inner wall of the connecting groove, and the top of the guide rod is slidably engaged with the limiting collar.

[0036] A pressure sensor is sleeved on the top of the outer wall of the guide rod, and the top of the limiting spring is pressed against the pressure sensor.

[0037] Preferably, the connection component further includes:

[0038] A restraining block is fitted into the bottom of the inner cavity of the connecting groove, a limiting groove is formed on the top of the restraining block, and the bottom of the outer wall of the guide rod is slidably engaged with the restraining block.

[0039] A fixing bolt is installed on one side of the fixing plate, and one end of the outer wall of the fixing bolt is threadedly connected to the restraining block.

[0040] Preferably, the connection component further includes:

[0041] A fixed shaft, the end of which is fixedly connected to a connecting frame;

[0042] A guide roller is rotatably mounted outside the fixed shaft, and the guide roller is in contact with the side of the fixed plate.

[0043] Another object of the present invention is to provide a method of using an optical fiber appearance inspection device, comprising the following specific steps:

[0044] Step 1: When inspecting the appearance of the optical fiber, first open the latch, rotate to open the second housing, place the optical fiber on the two support rollers, then close the second housing and lock it with the latch. The limit roller and the support roller work together to guide and transport the optical fiber.

[0045] Step 2: The optical fiber is wound up and transported. The optical fiber passes through the vision camera, which captures images of the outside of the optical fiber and transmits the detection data to the identification terminal to identify external defects in the optical fiber.

[0046] Step 3: The pressure sensor transmits the pressure data of the limit spring to the recognition terminal. When the data detected by the pressure sensor remains at the first threshold, the fiber optic transmission rate is increased within the detection rate range of the vision camera. When the data detected by the pressure sensor fluctuates, the fiber optic transmission rate is decreased.

[0047] The technical effects and advantages of this invention are as follows:

[0048] This invention utilizes a combination of a light-shielding box, a vision camera, an integrated bracket, and a guiding component. The light-shielding box can shield the vision camera from external light during operation, thereby improving the accuracy of identifying external defects in optical fibers. Furthermore, the guiding component ensures the stability of the optical fiber within the light-shielding box and allows for adjustment of the fiber's transmission speed based on its operating status, thus increasing the fiber detection rate. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0050] Figure 2 This is a schematic diagram of the internal structure of the integrated bracket of the present invention located on the front of the first housing;

[0051] Figure 3 This is a schematic diagram of the internal structure of the bearing roller located on the front of the first housing according to the present invention;

[0052] Figure 4 This is a schematic diagram of the internal structure of the front of the fixing plate of the present invention;

[0053] Figure 5 This is a schematic diagram of the internal structure of the fixing plate of the present invention from the top view.

[0054] In the diagram: 1. Light-shielding box; 11. First housing; 12. Second housing; 13. Buckle; 2. Vision camera; 3. Integrated bracket; 31. Base; 32. Mounting bracket; 33. Connecting plate; 34. Positioning plate; 35. Positioning rod; 36. Bearing plate; 37. Limiting rod; 4. Guide assembly; 41. Fixed bracket; 42. Bearing roller; 43. Connecting frame; 44. Connecting assembly; 441. Fixed plate; 442. Connecting block; 443. Limiting spring; 444. Guide rod; 445. Limiting collar; 446. Pressure sensor; 447. Restraining block; 448. Fixing bolt; 449. Fixed shaft; 4410. Guide roller; 45. Limiting roller. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] This invention provides, for example Figures 1-5 The image shows a fiber optic appearance inspection device.

[0057] Example 1: Includes a light-shielding box 1, a vision camera 2, an integrated bracket 3, and a guide assembly 4. The light-shielding box 1 is used to shield the fiber optic inspection section from light. The vision camera 2 is located inside the light-shielding box 1 and is used to inspect the appearance of the fiber optic cable. Three vision cameras 2 are arranged in a circular array to ensure comprehensive inspection of the fiber optic cable's exterior. The light-shielding box 1 can block the external inspection section of the fiber optic cable, thereby preventing external light sources from affecting the vision camera 2. The vision camera 2 has its own light source, ensuring the accuracy of its inspection and imaging. After the vision camera 2 detects the data, it can transmit the detected data to the recognition terminal to determine the external defects of the fiber optic cable. This is existing technology and will not be described in detail here. The integrated bracket 3 is located inside the light-shielding box 1 and is used to support and install the vision camera 2. With the help of the integrated bracket 3 and the light-shielding box 1, it is easy to install or remove the vision camera 2. The guide assembly 4 is located at the end of the inner cavity of the light-shielding box 1 and is used to guide the fiber optic cable, thereby improving the stability of the fiber optic cable's movement inside the light-shielding box 1.

[0058] Specifically, the light-shielding box 1 includes a first housing 11, a second housing 12, and a latch 13. The integrated bracket 3 and the guide assembly 4 are both disposed inside the first housing 11. The second housing 12 is rotatably disposed on the top of the first housing 11. Cable routing grooves are provided at the ends of the first housing 11 and the second housing 12 on opposite sides. The latch 13 is installed on one side of the first housing 11 and the second housing 12. Thus, opening the latch 13 allows the second housing 12 to be opened, which facilitates the arrangement and placement of optical fibers.

[0059] Furthermore, the integrated bracket 3 includes a base 31, a mounting bracket 32, a connecting plate 33, and a positioning plate 34. The base 31 is fixedly connected to the bottom of the inner wall of the first housing 11, the mounting bracket 32 ​​is slidably engaged with the top of the base 31, and the vision camera 2 is fixedly mounted on the mounting bracket 32. The mounting bracket 32 ​​is as follows... Figure 2As shown, the vision cameras 2 can be arranged in a circular array. The connecting plate 33 is fixedly connected to the side of the mounting bracket 32, and the side of the connecting plate 33 is in contact with the inner wall of the first housing 11. The positioning plate 34 is fixedly connected to one side of the inner wall of the second housing 12, and the top of the positioning plate 34 is in contact with the top of the connecting plate 33. When the second housing 12 is closed, the positioning plate 34 can limit the mounting bracket 32 ​​by the connecting plate 33. When the second housing 12 is opened, the mounting bracket 32 ​​can be removed from the first housing 11, thereby disassembling and maintaining the vision cameras 2.

[0060] Furthermore, the integrated bracket 3 also includes a positioning rod 35, a support plate 36, and a limiting rod 37. The positioning rod 35 is fixedly connected to the top of the base 31, and a positioning hole is provided at the bottom of the mounting bracket 32. The outer wall of the positioning rod 35 is slidably engaged with the inner cavity of the positioning hole. The positioning rod 35 can improve the stability of the mounting bracket 32 ​​installed inside the first housing 11. The support plate 36 is fixedly connected to the side of the inner wall of the first housing 11, and the top of the support plate 36 is in contact with the connecting plate 33. The limiting rod 37 is fixedly connected to the bottom of the connecting plate 33, and a limiting hole is provided at the top of the support plate 36. The outer wall of the limiting rod 37 is slidably engaged with the inner cavity of the limiting hole. The support plate 36 and the limiting rod 37 can improve the stability of the connecting plate 33 installed inside the first housing 11, thereby further improving the stability of the mounting bracket 32 ​​installation.

[0061] Example 2: Based on Example 1, the guide assembly 4 includes a fixed bracket 41, a load-bearing roller 42, a connecting frame 43, a connecting assembly 44, and a limiting roller 45. The fixed bracket 41 is fixedly connected to the inside of the first housing 11. The load-bearing roller 42 is rotatably mounted on the fixed bracket 41 and is used to limit the load of the optical fiber. The connecting frame 43 is mounted inside the second housing 12 through the connecting assembly 44. The limiting roller 45 is rotatably mounted on the connecting frame 43 and is used to squeeze and limit the optical fiber. The limiting roller 45 and the load-bearing roller 42 can limit and bind the optical fiber, thereby ensuring the stability of the optical fiber transmission. When the second housing 12 is opened, the limiting roller 45 and the load-bearing roller 42 separate, which facilitates the placement or removal of the optical fiber.

[0062] Furthermore, the connecting assembly 44 includes a fixing plate 441, a connecting block 442, and a limiting spring 443. The top of the fixing plate 441 is fixedly connected to the second housing 12, and the connecting block 442 is fixedly connected to the side of the connecting frame 43. A connecting groove is provided on one side of the fixing plate 441, and the connecting block 442 is slidably disposed inside the connecting groove. The limiting spring 443 is disposed inside the connecting groove, and the bottom of the limiting spring 443 is pressed and fitted against the connecting block 442. The limiting spring 443 can exert an elastic compressive force on the connecting frame 43 through the connecting block 442, thereby giving the limiting roller 45 an elastic compressive force toward the bearing roller 42, thus ensuring the stability of the limiting roller 45 and the bearing roller 42 in limiting and guiding the optical fiber.

[0063] In particular, the connecting assembly 44 also includes a guide rod 444, a limiting collar 445, a pressure sensor 446, a restraining block 447, and a fixing bolt 448. The guide rod 444 is disposed inside the connecting groove. The top of the connecting block 442 has a through hole that matches the guide rod 444. The limiting spring 443 is slidably sleeved on the outside of the guide rod 444. The limiting collar 445 is fixedly installed on the top of the inner wall of the connecting groove. The top of the guide rod 444 is slidably engaged with the limiting collar 445. The pressure sensor 446 is sleeved on the top of the outer wall of the guide rod 444. The top of the limiting spring 443 is pressed against the pressure sensor 446. The pressure sensor 446 is annular and can detect the elastic force of the limiting spring 443. The pressure sensor 446 can transmit the detected data to the analysis terminal. When the fiber optic transmission speed is too fast, the fiber optic cable will swing. This causes the limiting roller 45 to wobble, which in turn causes fluctuations in the data detected by the pressure sensor 446. Based on the data detected by the pressure sensor 446, the speed of fiber optic transmission can be adjusted. In addition, by combining the fiber optic fluctuations detected by the vision camera 2, the fiber optic transmission speed can be adjusted again. This improves the fiber optic detection rate while ensuring the detection accuracy of the vision camera 2. The binding block 447 is fitted at the bottom of the inner cavity of the connecting groove. The top of the binding block 447 has a limiting groove. The bottom of the outer wall of the guide rod 444 is slidably engaged with the binding block 447. The fixing bolt 448 is installed on one side of the fixing plate 441. One end of the outer wall of the fixing bolt 448 is threadedly connected to the binding block 447. By removing the fixing bolt 448, the binding block 447, the guide rod 444, the limiting spring 443, and the connecting frame 43 can be disassembled and maintained.

[0064] Furthermore, the connecting assembly 44 also includes a fixed shaft 449 and a guide roller 4410. The end of the fixed shaft 449 is fixedly connected to the connecting frame 43. The guide roller 4410 is rotatably mounted on the outside of the fixed shaft 449. The guide roller 4410 is in contact with the side of the fixed plate 441, and there are two guide rollers 4410 on both sides of the fixed plate 441, thereby ensuring the stability of the up and down movement of the limiting roller 45.

[0065] Another object of the present invention is to provide a method of using an optical fiber appearance inspection device, comprising the following specific steps:

[0066] Step 1: When inspecting the appearance of the optical fiber, first open the latch 13, rotate to open the second housing 12, place the optical fiber on the two carrying rollers 42, then close the second housing 12, and use the latch 13 to lock the second housing 12. The limiting roller 45 and the carrying roller 42 cooperate to guide and transport the optical fiber.

[0067] Step 2: The optical fiber is wound up and transported. The optical fiber passes through vision camera 2, which captures images of the outside of the optical fiber and transmits the detection data to the identification terminal to identify external defects in the optical fiber.

[0068] Step 3: The pressure sensor 446 transmits the pressure data collected from the limiting spring 443 to the recognition terminal. When the data detected by the pressure sensor 446 remains at the first threshold, the fiber optic transmission rate is increased within the detection rate range of the vision camera 2. When the data detected by the pressure sensor 446 fluctuates, the fiber optic transmission rate is reduced until the fiber optic transmission speed range is stable, thereby improving the efficiency of fiber optic transmission detection.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fiber optic appearance inspection device, characterized in that, include: The light-shielding box (1) is used to provide light protection for the fiber optic detection part; A visual camera (2) is installed inside a light-shielding box (1) and is used to inspect the appearance of optical fibers. An integrated bracket (3) is disposed inside the light-shielding box (1) and is used to support and install the vision camera (2); The guide component (4) is disposed at the end of the inner cavity of the light-shielding box (1) and is used to guide the optical fiber.

2. The optical fiber appearance inspection device according to claim 1, characterized in that, The light-shielding box (1) includes: The first housing (11) is provided inside the integrated bracket (3) and the guide assembly (4); The second housing (12) is rotatably disposed on the top of the first housing (11), and the ends of the first housing (11) and the second housing (12) on opposite sides are provided with cable trays; Hook (13) is attached to one side of the first housing (11) and the second housing (12).

3. The optical fiber appearance inspection device according to claim 2, characterized in that, The integrated support (3) includes: The base (31) is fixedly connected to the bottom of the inner wall of the first housing (11); Mounting bracket (32), which is slidably snapped onto the top of base (31), and the vision camera (2) is fixedly mounted on the mounting bracket (32); A connecting plate (33) is fixedly connected to the side of the mounting bracket (32), and the side of the connecting plate (33) is in contact with the inner wall of the first housing (11); Positioning plate (34) is fixedly connected to one side of the inner wall of the second housing (12), and the top of the positioning plate (34) is in contact with the top of the connecting plate (33).

4. The fiber optic appearance inspection device according to claim 3, characterized in that, The integrated support (3) also includes: Positioning rod (35), the positioning rod (35) is fixedly connected to the top of the base (31), the bottom of the mounting bracket (32) is provided with a positioning hole, and the outer wall of the positioning rod (35) is slidably engaged with the inner cavity of the positioning hole; The support plate (36) is fixedly connected to the side of the inner wall of the first housing (11), and the top of the support plate (36) is in contact with the connecting plate (33); A limiting rod (37) is fixedly connected to the bottom of the connecting plate (33). A limiting hole is opened on the top of the bearing plate (36). The outer wall of the limiting rod (37) is slidably engaged with the inner cavity of the limiting hole.

5. The optical fiber appearance inspection device according to claim 2, characterized in that, The guiding component (4) includes: A fixed bracket (41) is fixedly connected to the inside of the first housing (11); A bearing roller (42) is rotatably mounted on a fixed bracket (41) and is used to limit the bearing of the optical fiber. A connecting frame (43) and a connecting assembly (44), wherein the connecting frame (43) is mounted inside the second housing (12) via the connecting assembly (44); A limiting roller (45) is rotatably mounted on a connecting frame (43) and is used to squeeze and limit the optical fiber.

6. The optical fiber appearance inspection device according to claim 5, characterized in that, The connection component (44) includes: A fixing plate (441) is fixedly connected to the top of the second housing (12); A connecting block (442) is fixedly connected to the side of the connecting frame (43). A connecting groove is provided on one side of the fixing plate (441), and the connecting block (442) is slidably disposed inside the connecting groove. A limiting spring (443) is disposed inside the connecting groove, and the bottom of the limiting spring (443) is pressed and fitted against the connecting block (442).

7. The optical fiber appearance inspection device according to claim 6, characterized in that, The connection component (44) further includes: The guide rod (444) is located inside the connecting groove. The top of the connecting block (442) has a through hole that matches the guide rod (444). The limiting spring (443) is slidably sleeved on the outside of the guide rod (444). A limiting collar (445) is fixedly installed on the top of the inner wall of the connecting groove, and the top of the guide rod (444) is slidably engaged with the limiting collar (445). A pressure sensor (446) is sleeved on the top of the outer wall of the guide rod (444), and the top of the limiting spring (443) is pressed against the pressure sensor (446).

8. The optical fiber appearance inspection device according to claim 7, characterized in that, The connection component (44) further includes: A restraining block (447) is fitted into the bottom of the inner cavity of the connecting groove. A limiting groove is opened on the top of the restraining block (447). The bottom of the outer wall of the guide rod (444) is slidably engaged with the restraining block (447). A fixing bolt (448) is installed on one side of a fixing plate (441), and one end of the outer wall of the fixing bolt (448) is threadedly connected to a restraining block (447).

9. The optical fiber appearance inspection device according to claim 8, characterized in that, The connection component (44) further includes: A fixed shaft (449) is fixedly connected at its end to a connecting frame (43); Guide roller (4410) is rotatably mounted on the outside of fixed shaft (449), and the guide roller (4410) is in contact with the side of fixed plate (441).

10. A method of using an optical fiber appearance inspection device, implementing the optical fiber appearance inspection device according to any one of claims 1-9, characterized in that, The specific steps include the following: Step 1: When inspecting the appearance of the optical fiber, first open the latch (13), rotate to open the second housing (12), place the optical fiber on the two carrying rollers (42), then close the second housing (12), and use the latch (13) to lock the second housing (12). The limiting roller (45) and the carrying roller (42) cooperate to guide and transport the optical fiber. Step 2: The optical fiber is wound up and transported. The optical fiber passes through the vision camera (2). The vision camera (2) takes pictures of the outside of the optical fiber and transmits the detection data to the identification terminal to identify the defects on the outside of the optical fiber. Step 3: The pressure sensor (446) transmits the pressure data of the limiting spring (443) to the recognition terminal. When the data detected by the pressure sensor (446) remains at the first threshold, the fiber optic transmission rate is increased within the detection rate range of the vision camera (2). When the data detected by the pressure sensor (446) fluctuates, the fiber optic transmission rate is reduced.

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