A cable outer surface defect detection device

Abstract

The application relates to the field of cable detection, in particular to a cable outer surface defect detection device. The device comprises a detection frame, an applicator arranged on the side of the middle part of the detection frame, an ultraviolet detector arranged on the side of the applicator, two rotating mechanisms arranged in the middle part of the detection frame in sequence, each rotating mechanism comprising a sliding table, a torsion frame, a driving seat and a clamping mechanism, the sliding table being arranged on the upper end of the detection frame, the driving seat being fixedly connected with the upper end of the sliding table, the torsion frame being rotationally connected with one side of the driving seat, the clamping mechanism being connected with the torsion frame, the clamping mechanism comprising a plurality of clamping claws, the plurality of clamping claws being slidingly arranged at equal angles along the circumferential direction of the torsion frame and abutting against the outer wall of the cable after moving, a main motor being fixedly connected with one end of the detection frame, a main rotating shaft being rotationally arranged on the side of the two sliding tables and fixedly connected with the output end of the main motor, and the main rotating shaft rotating to drive the plurality of clamping claws to rotate. The device can automatically detect the defects of the cable, and the defects can be completely exposed during the detection process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cable detection, in particular to a cable outer surface defect detection device. BACKGROUND

[0002] In the field of cable outer surface defect detection, the current mainstream detection methods on the market have significant defects. Manual fluorescent agent detection relies heavily on manpower, and detection personnel need to operate for a long time at close range, which is labor-intensive and extremely inefficient. At the same time, manual application cannot guarantee the uniformity and consistency of the fluorescent agent application, and it is easy to cause excessive or insufficient application in some areas, affecting the accuracy of the detection results. Moreover, manual detection is easily affected by subjective factors, and the fatigue and experience differences of the detection personnel may cause the omission of small defects.

[0003] Some devices use vertical and horizontal extrusion methods to extrude the upper and lower sides of the cable vertically during cable detection. Under the elastic action of the cable sheath itself, the left and right sides of the cable can expand and deform outward, thereby enlarging the defects on the left and right sides of the cable. Similarly, by using a horizontal extrusion device, the defects on the upper and lower sides of the cable can be enlarged. After the defects are enlarged and opened, the fluorescent liquid can more easily enter the defects, making the subsequent fluorescent detection more sensitive, thereby improving the accuracy of defect detection.

[0004] However, extruding only on the upper and lower and left and right sides of the cable may cause some defects in certain directions to be unable to be effectively enlarged. For example, for some cracks that are diagonal or at a certain angle, the extrusion operation may not be able to fully open them, thereby affecting the accuracy of the detection results and creating a detection blind area. At the same time, extruding at local positions can easily cause concentrated stress on the surface of the cable, which can cause local deformation of the cable sheath to be too large, and even cause damage to the internal structure of the cable. Repeated extrusion in different directions can further increase the risk of damage, affecting the service life and safety of the cable. SUMMARY

[0005] Therefore, it is necessary to provide a cable outer surface defect detection device to solve the problems in the prior art.

[0006] To solve the problems in the prior art, the technical scheme adopted by the present application is as follows:

[0007] A cable outer surface defect detection device, comprising:

[0008] a detection frame;

[0009] an applicator arranged beside the middle part of the detection frame;

[0010] an ultraviolet detector arranged beside the applicator;

[0011] Two rotating mechanisms are sequentially arranged in the middle of the testing frame. Each rotating mechanism includes a sliding stage, a torsion frame, a drive seat, and a clamping mechanism. The sliding stage is located at the upper end of the testing frame. The drive seat is fixedly connected to the upper end of the sliding stage. The torsion frame is rotatably connected to one side of the drive seat. The clamping mechanism is connected to the torsion frame.

[0012] The clamping mechanism includes several jaws, which are arranged in an angular array along the circumference of the torsion frame and abut against the outer wall of the cable after moving.

[0013] The main motor is fixedly connected to one end of the testing frame;

[0014] The main shaft is rotatably mounted on the side of the two sliding tables and is fixedly connected to the output end of the main motor. When the main shaft rotates, it drives several grippers to rotate through the torsion frame.

[0015] Furthermore, the device also includes two robotic arms, the output ends of which are connected to an ultraviolet detector and an applicator, respectively.

[0016] Furthermore, the device also includes an auxiliary motor, a screw, a screw sleeve, and two limiting slide rails. The two limiting slide rails are fixedly connected to the upper end of the testing frame, one sliding stage is fixedly connected to the limiting slide rail, and the other sliding stage is slidably connected to the limiting slide rail. The auxiliary motor is located next to the main motor and fixedly connected to the testing frame. The screw is rotatably located in the middle of the testing frame. The screw sleeve is fixedly connected to the other sliding stage. The screw sleeve is threadedly connected to the screw. The screw is coaxially fixedly connected to the output end of the auxiliary motor.

[0017] Furthermore, the rotating mechanism also includes a positioning seat, a first bevel gear, a second bevel gear, a limiting bushing, a bevel gear frame, a worm, and a worm wheel. The positioning seat is fixedly connected to the upper end of the sliding table, the bevel gear frame is fixedly connected to the upper end of the positioning seat, the first bevel gear is rotatably connected to the bevel gear frame, the second bevel gear meshes with the first bevel gear and is rotatably connected to the bevel gear frame, the second bevel gear in the two rotating mechanisms rotates in opposite directions, the first bevel gear is fixedly connected to the limiting bushing on the same axis, the limiting bushing is keyed to the main rotating shaft, the worm wheel is rotatably connected to the middle of the drive seat, the worm is rotatably mounted on the upper end of the worm wheel and meshes with the worm wheel, the worm is fixedly connected to the second bevel gear on the same axis, and the worm wheel is the output end of the rotating mechanism.

[0018] Furthermore, the inner side of the limiting bushing is formed with several limiting flanges at equal intervals along the circumferential direction, and the main rotating shaft is formed with several limiting grooves at equal intervals along the circumferential direction. The limiting flanges and limiting grooves correspond one-to-one and are slidably connected.

[0019] Furthermore, the clamping mechanism also includes a main gear and a main gear ring. The main gear is rotatably connected to the drive seat and is driven by the output end of the rotating mechanism. The main gear ring is coaxially fixed to the torsion frame and meshes with the main gear.

[0020] Furthermore, the clamping mechanism also includes a drive motor, a drive gear, a torsion disc, a power gear ring, and several auxiliary gears. The torsion disc is coaxially and fixedly connected to the torsion frame. The drive motor is fixedly connected to the side of the torsion disc away from the gripper. The drive gear is rotatably connected to the torsion disc and coaxially and fixedly connected to the output end of the drive motor. The power gear ring is coaxially and rotatably connected to the torsion disc and meshes with the drive gear. Several auxiliary gears are arranged in an equiangular array along the circumference of the power gear ring and mesh with the power gear ring respectively. The several auxiliary gears are the output ends of the clamping mechanism.

[0021] Furthermore, the clamping mechanism also includes several sliding gears, several sliding racks, and several connecting pins. The torsion frame is formed with several clearance holes in an equal-angle array along the circumferential direction. The several sliding gears are arranged in an equal-angle array along the circumferential direction on the side of the torsion frame away from the gripper. The several sliding racks are arranged beside the several sliding gears and are slidably connected to the torsion frame. The several sliding racks mesh with the several sliding gears respectively. Each sliding rack is provided with two connecting pins on the side near the gripper. The connecting pins are slidably connected to the clearance holes. One end of the connecting pin is fixedly connected to the sliding rack, and the other end is fixedly connected to the gripper. The several sliding gears are respectively connected to the output end of the clamping mechanism for transmission.

[0022] Furthermore, each gripper has an anti-slip pad fixed to one end near the center of the torsion frame.

[0023] The beneficial effects of this invention compared to the prior art are:

[0024] Firstly, this device exposes defects by twisting the cable. The shear force and circumferential tensile force generated by twisting can act on the entire surface of the cable, which can open cracks in different directions (such as axial, circumferential or oblique). Furthermore, two reverse twists can further enlarge the crack opening. Especially for small cracks closed by the elastic sheath, multiple twists can more thoroughly destroy their closed state. In contrast, squeezing is only targeted in a specific direction (such as up and down or left and right), and it is easy to miss defects in other directions.

[0025] Secondly, the torsion method used in this device opens cracks through shear force rather than direct compression force, avoiding plastic deformation or structural damage to the sheath caused by excessive compression. It is especially suitable for sheaths made of elastic materials, whose shear resistance is usually better than that of compression fatigue. Although the cable will be subjected to a certain degree of torsional force, the degree of damage to the cable can be well controlled because the force is applied evenly at both ends and the torsion is performed in a limited number of times (twice). As long as the specified force and number of times are followed during operation, the impact on the normal performance of the cable is small.

[0026] Thirdly, this device employs an automated testing process, effectively avoiding discrepancies caused by subjective factors during manual inspection. Whether it's applying fluorescent agents or identifying defects, the equipment executes precisely, eliminating errors caused by operator fatigue and varying experience. This ensures the reliability and consistency of every test result. Furthermore, the application of a robotic arm gives the device exceptional flexibility, enabling it to handle the testing needs of cables of different materials, specifications, and shapes. Whether it's a conventional cable or a special irregularly shaped cable, the robotic arm's movements can be adjusted to achieve comprehensive inspection of the cable's outer surface, broadening the device's applicability. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0028] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0029] Figure 3 This is a top view of an embodiment;

[0030] Figure 4 This is a three-dimensional structural schematic diagram from another angle of the embodiment;

[0031] Figure 5 yes Figure 4 Enlarged view of the structure at point B in the middle;

[0032] Figure 6 This is a three-dimensional structural diagram of the rotating mechanism in the embodiment;

[0033] Figure 7 This is an enlarged view of a portion of the rotating mechanism in the embodiment;

[0034] Figure 8 This is a three-dimensional exploded view of the rotating mechanism from another angle in the embodiment.

[0035] The numbers on the map are:

[0036] 1. Cable; 2. Testing frame; 3. Applicator; 4. Robotic arm; 5. Ultraviolet detector; 6. Rotation mechanism; 7. Sliding stage; 8. Positioning seat; 9. First bevel gear; 10. Limiting bushing; 11. Limiting flange; 12. Second bevel gear; 13. Bevel gear frame; 14. Worm; 15. Worm wheel; 16. Torsion frame; 17. Clearance hole; 18. Connecting pin; 19. Clamping mechanism; 20. Drive seat; 21. Main gear; 22. Main gear ring; 23. Gripper; 24. Anti-slip pad; 25. Torsion disc; 26. Sliding rack; 27. Sliding gear; 28. Secondary gear; 29. ​​Power gear ring; 30. Drive motor; 31. Drive gear; 32. Main motor; 33. Main rotating shaft; 34. Limiting groove; 35. Secondary motor; 36. Screw; 37. Screw sleeve; 38. Limiting slide rail. Detailed Implementation

[0037] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0038] refer to Figures 1 to 8 A cable outer surface defect detection device, comprising:

[0039] Detection rack 2;

[0040] The applicator 3 is located on the side of the middle part of the testing frame 2;

[0041] The ultraviolet detector 5 is located next to the applicator 3;

[0042] Two rotating mechanisms 6 are sequentially arranged in the middle of the testing frame 2. Each rotating mechanism 6 includes a sliding stage 7, a torsion frame 16, a drive seat 20, and a clamping mechanism 19. The sliding stage 7 is arranged at the upper end of the testing frame 2. The drive seat 20 is fixedly connected to the upper end of the sliding stage 7. The torsion frame 16 is rotatably connected to one side of the drive seat 20. The clamping mechanism 19 is connected to the torsion frame 16.

[0043] The clamping mechanism 19 includes a plurality of jaws 23, which are arranged in an equiangular array along the circumferential direction of the torsion frame 16 and abut against the outer wall of the cable 1 after movement.

[0044] The main motor 32 is fixedly connected to one end of the testing frame 2;

[0045] The main rotating shaft 33 is rotatably mounted on the side of the two sliding tables 7 and is fixedly connected to the output end of the main motor 32. When the main rotating shaft 33 rotates, it drives several grippers 23 to rotate through the torsion frame 16.

[0046] During operation, the operator first pulls cable 1 through the inspection frame 2, then activates two clamping mechanisms 19. These mechanisms, using grippers 23, clamp both ends of the cable 1. Next, the operator starts the main motor 32, which drives two torsion frames 16 to deflect in opposite directions via a rotating shaft, ensuring the cable 1 can be twisted. After deflection, the applicator 3 applies fluorescent agent to the outside of cable 1. Once the fluorescent agent penetrates the defects in cable 1, the main motor 32 drives the two torsion frames 16 to deflect in the opposite direction, causing the cable 1 to twist in the opposite direction, preventing some defects from being fully displayed. Finally, the ultraviolet detector 5 performs light detection on cable 1, revealing the defects infiltrated with the fluorescent agent.

[0047] To improve the flexibility of the applicator 3 and the ultraviolet detector 5, and to ensure that there are no blind spots in the application of fluorescent agent and light detection of cable 1, the following features are specifically designed:

[0048] The device also includes two robotic arms 4, the output ends of which are connected to the ultraviolet detector 5 and the applicator 3, respectively. During the inspection process, the two robotic arms 4 can flexibly control the ultraviolet detector 5 and the applicator 3, and adjust the position and angle of inspection and application in real time according to the twisting of the cable 1, so as to ensure that every part of the outer surface of the cable 1 can be fully inspected and applied, and avoid blind spots in inspection and application due to fixed positions.

[0049] To change the relative distance between the two sliding stages 7, and thus ensure that after the clamp 23 clamps the outer wall of the cable 1, the cable 1 can be twisted as the two torsion frames 16 rotate, preventing the area of ​​the cable 1 that needs to be twisted from being too long or too short and affecting the twisting effect, the following features are specifically provided:

[0050] This device also includes an auxiliary motor 35, a screw 36, a screw sleeve 37, and two limiting slide rails 38. The two limiting slide rails 38 are fixedly connected to the upper end of the detection frame 2. One sliding platform 7 is fixedly connected to the limiting slide rail 38, and the other sliding platform 7 is slidably connected to the limiting slide rail 38. The auxiliary motor 35 is located beside the main motor 32 and fixedly connected to the detection frame 2. The screw 36 is rotatably located in the middle of the detection frame 2. The screw sleeve 37 is fixedly connected to the other sliding platform 7 and threadedly connected to the screw 36. The screw 36 is coaxially fixedly connected to the output end of the auxiliary motor 35. In actual operation, the auxiliary motor 35 is started, which drives the screw 36 to rotate. Since the screw sleeve 37 is threadedly connected to the screw 36 and fixedly connected to the other sliding platform 7, this sliding platform 7 slides on the limiting slide rail 38. Therefore, the relative distance between the two sliding platforms 7 can be precisely adjusted according to the required twisting length of the cable 1, ensuring the stability and twisting effect of the cable 1 during the twisting process.

[0051] To supplement the specific structure of the rotating mechanism 6, and to ensure that the two torsion frames 16 can rotate in opposite directions after the main motor 32 is started, the following features are also provided:

[0052] The rotating mechanism 6 also includes a positioning seat 8, a first bevel gear 9, a second bevel gear 12, a limiting bushing 10, a bevel gear frame 13, a worm 14, and a worm wheel 15. The positioning seat 8 is fixedly connected to the upper end of the sliding table 7, the bevel gear frame 13 is fixedly connected to the upper end of the positioning seat 8, the first bevel gear 9 is rotatably connected to the bevel gear frame 13, the second bevel gear 12 meshes with the first bevel gear 9 and is rotatably connected to the bevel gear frame 13, the second bevel gear 12 in the two rotating mechanisms 6 rotates in opposite directions, the first bevel gear 9 is fixedly connected to the limiting bushing 10 on the same axis, the limiting bushing 10 is keyed to the main rotating shaft 33, the worm wheel 15 is rotatably connected to the middle of the drive seat 20, the worm 14 is rotatably disposed on the upper end of the worm wheel 15 and meshes with the worm wheel 15, the worm 14 is fixedly connected to the second bevel gear 12 on the same axis, and the worm wheel 15 is the output end of the rotating mechanism 6. When the main motor 32 starts and drives the main shaft 33 to rotate, the main shaft 33 drives the limiting sleeve 10 to rotate via a key connection. The limiting sleeve 10 drives the first bevel gear 9 to rotate, and the first bevel gear 9 meshes with the second bevel gear 12. Since the second bevel gear 12 in the two rotating mechanisms 6 rotates in opposite directions, the output directions of the two rotating mechanisms 6 are opposite, thereby realizing that the two torsion frames 16 rotate in opposite directions. At the same time, the second bevel gear 12 drives the worm gear 14 to rotate, and the worm gear 14 drives the worm wheel 15 to rotate. The worm wheel 15, as the output end of the rotating mechanism 6, drives the drive seat 20 and the torsion frame 16 connected to it to rotate.

[0053] To prevent relative rotation between the limiting sleeve 10 and the main rotating shaft 33, which would affect their transmission process, the following features are specifically provided:

[0054] The inner side of the limiting bushing 10 is formed with several limiting flanges 11 at equal intervals along the circumferential direction, and the main rotating shaft 33 is formed with several limiting grooves 34 at equal intervals along the circumferential direction. The limiting flanges 11 and the limiting grooves 34 correspond one-to-one and are slidably connected. During operation, the limiting bushing 10 and the main rotating shaft 33 are effectively prevented from rotating relative to each other during transmission through the cooperation of the limiting flanges 11 and the limiting grooves 34, ensuring that the power of the main rotating shaft 33 can be stably and accurately transmitted to the limiting bushing 10, thereby driving the rotating mechanism 6 to operate normally.

[0055] In order to drive the torsion frame 16 to rotate, and thus achieve the effect that after the several grippers 23 abut against the outer wall of the cable 1, the torsion frame 16 will rotate and drive the cable 1 to twist through the several grippers 23, the following features are specifically provided:

[0056] The clamping mechanism 19 also includes a main gear 21 and a main gear ring 22. The main gear 21 is rotatably connected to the drive seat 20 and is coaxially fixed to the worm gear 15. The main gear ring 22 is coaxially fixed to the torsion frame 16 and meshes with the main gear 21. When the worm gear 15 rotates, it drives the main gear 21, which is fixed to it, to rotate. The main gear 21 then drives the torsion frame 16 to rotate through the main gear ring 22. This allows the torsion frame 16 to rotate and cause the cable 1 to twist through the clamping jaws 23 after several jaws 23 abut against the outer wall of the cable 1.

[0057] To supplement the detailed structure of the clamping mechanism 19, the following features are also provided:

[0058] The clamping mechanism 19 also includes a drive motor 30, a drive gear 31, a torsion disc 25, a power gear ring 29, and several auxiliary gears 28. The torsion disc 25 is coaxially fixed to the torsion frame 16. The drive motor 30 is fixed to the side of the torsion disc 25 away from the gripper 23. The drive gear 31 is rotatably connected to the torsion disc 25 and coaxially fixed to the output end of the drive motor 30. The power gear ring 29 is coaxially rotatably connected to the torsion disc 25 and meshes with the drive gear 31. Several auxiliary gears 28 are arranged in an equiangular array along the circumference of the power gear ring 29 and mesh with the power gear ring 29. The several auxiliary gears 28 are the output ends of the clamping mechanism 19. When the drive motor 30 is started, it drives the drive gear 31 to rotate. The drive gear 31 meshes with the power gear ring 29, causing the power gear ring 29 to rotate. The power gear ring 29 drives the several auxiliary gears 28 meshing with it to rotate. The several auxiliary gears 28 serve as the output ends of the clamping mechanism 19, providing power for the subsequent movement of the gripper 23.

[0059] To achieve the displacement of several grippers 23, the following features are specifically designed:

[0060] The clamping mechanism 19 also includes a plurality of sliding gears 27, a plurality of sliding racks 26, and a plurality of connecting pins 18. The torsion frame 16 is formed with a plurality of clearance holes 17 in an equiangular array along the circumferential direction. The plurality of sliding gears 27 are arranged in an equiangular array along the circumferential direction on the side of the torsion frame 16 away from the gripper 23. The plurality of sliding racks 26 are arranged beside the plurality of sliding gears 27 and are slidably connected to the torsion frame 16. The plurality of sliding racks 26 mesh with the plurality of sliding gears 27 respectively. Each sliding rack 26 is provided with two connecting pins 18 on the side near the gripper 23. The connecting pins 18 are slidably connected to the clearance holes 17. One end of the connecting pin 18 is fixedly connected to the sliding rack 26 and the other end is fixedly connected to the gripper 23. The plurality of sliding gears 27 are coaxially fixedly connected to the plurality of auxiliary gears 28 respectively. When the secondary gear 28 rotates and drives the sliding gear 27 to rotate, the sliding gear 27 meshes with the sliding rack 26, causing the sliding rack 26 to slide on the torsion frame 16. Through the connecting pin 18, the clamp 23 moves, realizing the displacement of several clamps 23, thereby clamping or releasing the cable 1.

[0061] To prevent the gripper 23 from slipping off the cable 1 when it twists the cable 1, the following features are specifically provided:

[0062] Each gripper 23 has an anti-slip pad 24 fixedly attached to one end near the center of the torsion frame 16. When the gripper 23 drives the cable 1 to twist, the anti-slip pad 24 increases the friction between the gripper 23 and the cable 1, effectively preventing the gripper 23 from slipping off the cable 1, ensuring the stability of the cable 1 during the twisting process, and ensuring the smooth progress of the testing work.

[0063] The working principle of this device is as follows: the operator first pulls the cable 1 through the testing frame 2. This operation is the starting step of the entire testing process and lays the foundation for subsequent testing work. Then, the two clamping mechanisms 19 are activated, driving the drive motor 30 to rotate, which in turn drives the drive gear 31 to rotate. The drive gear 31 meshes with the power gear ring 29, causing the power gear ring 29 to rotate, which in turn drives several meshing auxiliary gears 28 to rotate. The rotation of the auxiliary gears 28 drives the sliding gear 27 to rotate, and the sliding gear 27 meshes with the sliding rack 26, causing the sliding rack 26 to slide on the torsion frame 16. Through the connecting pin 18, the clamping jaws 23 move. Several clamping jaws 23 slide in an equidistant array along the circumference of the torsion frame 16, finally abutting against the outer walls of both ends of the cable 1 in the middle, achieving stable clamping of the cable 1.

[0064] Next, the operator starts the main motor 32, whose output drives the main shaft 33 to rotate. The main shaft 33, via a key connection, drives the limiting sleeve 10 to rotate, which in turn drives the first bevel gear 9 to rotate. The first bevel gear 9 meshes with the second bevel gear 12. Since the second bevel gear 12 in the two rotating mechanisms 6 rotates in opposite directions, the two rotating mechanisms 6 rotate in opposite directions. The second bevel gear 12 drives the worm gear 14 to rotate, which in turn drives the worm wheel 15 to rotate. The worm wheel 15 drives the drive seat 20 to rotate, which in turn drives the torsion frame 16 to rotate. When the torsion frame 16 rotates, the main gear 21 meshes with the main gear ring 22, further driving the torsion frame 16 to rotate, which in turn drives the cable 1 to twist via the gripper 23.

[0065] During the torsion process of cable 1, the auxiliary motor 35 can adjust the relative distance between the two sliding platforms 7 according to the required torsion length of cable 1 through the cooperation of screw 36 and screw sleeve 37, ensuring the stability and effectiveness of cable 1 torsion. Simultaneously, the applicator 3, under the control of the robotic arm 4, evenly applies fluorescent agent to the exterior of cable 1, allowing the fluorescent agent to penetrate into defects in cable 1. After the fluorescent agent has fully penetrated, the main motor 32 drives the two torsion frames 16 to deflect in the opposite direction, causing cable 1 to twist in the opposite direction, preventing some defects from going undetected due to incomplete exposure. Finally, the ultraviolet detector 5, with the flexible adjustment of the robotic arm 4, performs comprehensive light detection on cable 1. Defects where fluorescent agent has penetrated will be clearly visible under ultraviolet light, thus achieving accurate detection of defects on the outer surface of cable 1.

[0066] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A cable outer surface defect detection device, characterized in that, include: Testing frame; The applicator is located on the side of the middle of the testing frame; A UV detector is located next to the applicator; Two rotating mechanisms are sequentially arranged in the middle of the testing frame. Each rotating mechanism includes a sliding stage, a torsion frame, a drive seat, and a clamping mechanism. The sliding stage is located at the upper end of the testing frame. The drive seat is fixedly connected to the upper end of the sliding stage. The torsion frame is rotatably connected to one side of the drive seat. The clamping mechanism is connected to the torsion frame. The clamping mechanism includes several jaws, which are arranged in an angular array along the circumference of the torsion frame and abut against the outer wall of the cable after moving. The main motor is fixedly connected to one end of the testing frame; The main shaft is rotatably mounted on the side of the two sliding tables and is fixedly connected to the output end of the main motor. When the main shaft rotates, it drives several grippers to rotate through the torsion frame. The clamping mechanism also includes a drive motor, a drive gear, a torsion disc, a power gear ring, and several auxiliary gears. The torsion disc is coaxially and fixedly connected to the torsion frame. The drive motor is fixedly connected to the side of the torsion disc away from the gripper. The drive gear is rotatably connected to the torsion disc and coaxially and fixedly connected to the output end of the drive motor. The power gear ring is coaxially and rotatably connected to the torsion disc and meshes with the drive gear. Several auxiliary gears are arranged in an equiangular array along the circumference of the power gear ring and mesh with the power gear ring respectively. Several auxiliary gears are the output ends of the clamping mechanism. The clamping mechanism also includes several sliding gears, several sliding racks, and several connecting pins. The torsion frame is formed with several clearance holes in an equal-angle array along the circumferential direction. The several sliding gears are arranged in an equal-angle array along the circumferential direction on the side of the torsion frame away from the gripper. The several sliding racks are arranged beside the several sliding gears and are slidably connected to the torsion frame. The several sliding racks mesh with the several sliding gears respectively. Each sliding rack is provided with two connecting pins on the side near the gripper. The connecting pins are slidably connected to the clearance holes. One end of the connecting pin is fixedly connected to the sliding rack, and the other end is fixedly connected to the gripper. The several sliding gears are respectively connected to the output end of the clamping mechanism for transmission.

2. The cable outer surface defect detection device according to claim 1, characterized in that, It also includes two robotic arms, the outputs of which are connected to an ultraviolet detector and an applicator, respectively.

3. The cable outer surface defect detection device according to claim 1, characterized in that, It also includes an auxiliary motor, a screw, a screw sleeve, and two limit slide rails. The two limit slide rails are fixedly connected to the upper end of the testing frame. One sliding stage is fixedly connected to the limit slide rail, and the other sliding stage is slidably connected to the limit slide rail. The auxiliary motor is located next to the main motor and fixedly connected to the testing frame. The screw is rotatably located in the middle of the testing frame. The screw sleeve is fixedly connected to the other sliding stage. The screw sleeve is threadedly connected to the screw. The screw is coaxially fixedly connected to the output end of the auxiliary motor.

4. The cable outer surface defect detection device according to claim 1, characterized in that, The rotating mechanism also includes a positioning seat, a first bevel gear, a second bevel gear, a limiting bushing, a bevel gear frame, a worm, and a worm wheel. The positioning seat is fixedly connected to the upper end of the sliding table, the bevel gear frame is fixedly connected to the upper end of the positioning seat, the first bevel gear is rotatably connected to the bevel gear frame, the second bevel gear meshes with the first bevel gear and is rotatably connected to the bevel gear frame, the second bevel gear in the two rotating mechanisms rotates in opposite directions, the first bevel gear is fixedly connected to the limiting bushing on the same axis, the limiting bushing is keyed to the main rotating shaft, the worm wheel is rotatably connected to the middle of the drive seat, the worm is rotatably mounted on the upper end of the worm wheel and meshes with the worm wheel, the worm is fixedly connected to the second bevel gear on the same axis, and the worm wheel is the output end of the rotating mechanism.

5. The cable outer surface defect detection device according to claim 1, characterized in that, The inner side of the limiting bushing is formed with several limiting flanges at equal intervals along the circumferential direction, and the main rotating shaft is formed with several limiting grooves at equal intervals along the circumferential direction. The limiting flanges and limiting grooves correspond one-to-one and are slidably connected.

6. The cable outer surface defect detection device according to claim 1, characterized in that, The clamping mechanism also includes a main gear and a main gear ring. The main gear is rotatably connected to the drive seat and is also connected to the output end of the rotating mechanism. The main gear ring is coaxially fixed to the torsion frame and meshes with the main gear.

7. The cable outer surface defect detection device according to claim 1, characterized in that, Each gripper has an anti-slip pad fixed to one end near the center of the torsion frame.

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