An annular light source with adjustable shading angle

Abstract

The utility model discloses a kind of annular light sources of adjustable shading angle, including light source body, the light source body includes annular luminous body, the inner side of the annular luminous body is equipped with first baffle ring, first recess is equipped on the first baffle ring, the inner side of the first baffle ring is equipped with second baffle ring, second recess is equipped on the second baffle ring, the light emitted by the annular luminous body first through first recess, then through second recess;The position of first recess relative to second recess is adjusted by rotating, to adjust the light emission angle of light source body;First baffle ring and second baffle ring are also fixedly connected by connecting piece, and are drivingly connected with rotary driving part;Rotary driving part drives first baffle ring and second baffle ring to rotate together, realizes 360 ° annular irradiation;The utility model can adjust shading position, to obtain adjustable luminous angle range, and under the driving of driving motor, realize 360 ° annular irradiation and photographing, to realize defect detection.

Description

Technical Field

[0001] This utility model relates to the field of ring light source technology in optical detection technology, and in particular to a ring light source with an adjustable shading angle. Background Technology

[0002] In the quality inspection stage of industrial production, automated surface defect detection based on machine vision has become a key technology. Among these technologies, the lighting system is one of the most critical factors affecting image quality. Traditional fixed ring light sources have the following drawbacks: When a traditional 360° ring light source directly illuminates the object being tested, a large amount of light shines at an angle or horizontal angle onto the curved surface, easily causing cross-reflections in adjacent areas. This results in large-area flares and artifacts in the inspection image, masking the true defect characteristics. When inspecting highly reflective curved metal workpieces, the flare area in the image can cover more than 30% of the effective field of view, severely interfering with judgment. For tiny concave and convex defects (depth / height less than 0.1mm), it is difficult to generate sufficient light intensity difference or shadow contrast under uniform illumination, leading to a high false negative rate; in actual production, the false negative rate of traditional ring light sources for such point defects can reach 20%-30%.

[0003] To improve upon the aforementioned 360° ring illumination, existing technologies also employ ring light sources at a specific angle, where light can only be emitted from that angle. Light from other angles is either blocked or lacks LEDs, making the illumination angle unadjustable and lacking adaptability when dealing with workpieces of different types and materials. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide an adjustable ring light source with adjustable shading angle. The shading position can be adjusted to obtain an adjustable emission angle range. Driven by a drive motor, it can achieve 360° ring illumination and photography, so as to realize high-speed and high-precision detection of surface defects of various complex industrial parts.

[0005] To achieve the above objectives, this utility model provides an adjustable-angle ring light source, comprising a light source body, the light source body including a ring-shaped light emitter, a first baffle ring with a first groove on its inner side, a second baffle ring with a second groove on its inner side, the light emitted by the ring-shaped light emitter passing through the first groove first and then through the second groove; the position of the first groove relative to the second groove is adjusted by rotation, thereby adjusting the light emission angle of the light source body; the first and second baffle rings are also fixedly connected by a connector and driven by a rotational drive; the rotational drive drives the first and second baffle rings to rotate together, achieving 360° ring illumination.

[0006] Preferably, the light source body further includes a support plate installed at the lower part of the annular light emitter, a first through hole is provided on one side of the support plate, the object to be measured is installed at the lower part of the first through hole, and a camera for collecting the reflected light from the object to be measured is installed at the upper part of the annular light emitter.

[0007] Preferably, the upper part of the annular light emitter is provided with a first mounting plate, which is fixedly connected to the annular light emitter; the first mounting plate is provided with a second through hole, which is aligned with the first through hole, so that the reflected light from the object being measured is collected by the camera; a plurality of first connecting plates are fixedly connected to the lower part of the circumference of the first mounting plate, and a support plate is fixedly connected to the lower part of the first connecting plate.

[0008] Preferably, the first baffle ring has a rotating ring at its lower part, and the rotating ring is disposed at the lower part of the annular light source; the first baffle ring and the rotating ring are perpendicular to each other, the first baffle ring is in close contact with the inner side of the annular light source, the first baffle ring is used to block the light emitted by the annular light source, and the first groove is used to allow the light emitted by the annular light source to pass through.

[0009] Preferably, the lower part of the second retaining ring is provided with an annular plate, which is disposed at the lower part of the rotating ring; the second retaining ring is perpendicular to the annular plate, and the second retaining ring is in close contact with the inner side of the first retaining ring, and the second retaining ring is used to block the light passing through the first groove.

[0010] Preferably, the annular plate is closely attached to the rotating ring, and the annular plate is provided with a plurality of U-shaped grooves. A connecting member is provided inside the U-shaped groove. The annular plate rotates along the U-shaped groove to adjust the position of the second groove relative to the first groove, thereby adjusting the light emission angle of the light source body. The connecting member fixes the annular plate and the rotating ring together. The rotation drive drives the annular plate and the rotating ring to rotate together to achieve 360° annular illumination.

[0011] Preferably, a ring rack is provided on one side of the rotating ring, the rotating drive component is a drive motor, the rotating drive component is installed on the side of the support plate away from the first through hole, the end of the rotating drive component passes through the support plate and is on the same side as the ring rack; the end of the rotating drive component is provided with a drive gear, and the drive gear is connected to the ring rack by a synchronous belt drive.

[0012] Preferably, a second mounting plate is installed at the lower part of the annular plate. The second mounting plate is used to support the annular plate and the rotating ring. The second mounting plate has a third through hole, which is aligned with the first through hole. A plurality of second connecting plates are fixedly connected to the lower part of the circumference of the first mounting plate, and the second mounting plate is fixedly connected to the lower part of the second connecting plates. A first limiting protrusion is provided on the circumference of the second mounting plate. The inner side of the second mounting plate and the first limiting protrusion forms an annular placement part, which is used to place the annular plate. The first limiting protrusion is used to limit the radial movement of the annular plate.

[0013] Preferably, the annular light emitter includes an L-shaped base plate, a vertical PCB board mounted on the L-shaped base plate, LED beads mounted on the vertical PCB board, and a cover plate covering the L-shaped base plate; the LED beads emit light between the L-shaped base plate and the cover plate; the L-shaped base plate is fixedly connected to a first mounting plate; the annular light emitter also includes a power cord, and the L-shaped base plate has a third groove, through which the power cord passes and is electrically connected to the vertical PCB board to provide power to the LED beads and drive them to emit light.

[0014] Preferably, the L-shaped base plate is provided with a fourth groove, the interior of which is used to accommodate the lower part of the vertical PCB board. The inner side of the cover plate is provided with a second limiting protrusion, which is used to limit the upper part of the vertical PCB board. A thermally conductive silicone pad is provided on the side of the vertical PCB board away from the LED beads, and the thermally conductive silicone pad conducts the heat generated by the vertical PCB board to the L-shaped base plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The detection process of this utility model: First, the position of the first groove relative to the second groove is adjusted by rotation, thereby adjusting the light emission angle of the light source body; wherein, the light emitted by the annular light emitter first passes through the first groove and then through the second groove, illuminating the surface of the object being tested; second, after the light emission angle is appropriate, the first and second retaining rings are fixedly connected together by a connector; third, the first and second retaining rings are also connected to a rotating drive component; the rotating drive component drives the first and second retaining rings to rotate together, achieving 360° annular illumination; finally, in conjunction with a camera, multi-angle images of the object being tested are acquired, and the acquired images are stitched and analyzed by software to achieve comprehensive identification, location, and judgment of surface defects or features of the object being tested.

[0017] 2. This utility model forms an adjustable light-shielding structure by mutually blocking the first and second grooves, effectively controlling the light emission range. The light emission range can be precisely adjusted according to actual detection needs. The light first enters from the first groove and then exits from the second groove. The beam angle is precisely controlled by adjusting the relative positions of the two grooves. Driven by the rotating drive component, 360° annular irradiation is completed through multiple rotations. Combined with the camera, multi-angle image acquisition is completed, ultimately achieving high-speed and high-precision detection of surface defects of various complex industrial parts. Attached Figure Description

[0018] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an adjustable light-shielding angle ring light source provided by this utility model;

[0020] Figure 2 This is an exploded view of an adjustable shading angle ring light source provided by this utility model;

[0021] Figure 3 This is a front view of an adjustable shading angle ring light source provided by this utility model;

[0022] Figure 4 This is a front view of the right side of the light source body provided by this utility model;

[0023] Figure 5 This is a schematic diagram of the rear structure on the right side of the light source body provided by this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first retaining ring and the second retaining ring provided by this utility model;

[0025] Figure 7 This is an exploded view of the first retaining ring and the second retaining ring provided by this utility model;

[0026] Figure 8 This is a schematic diagram showing the first and second grooves overlapping each other, provided by this utility model;

[0027] Figure 9 This is a partial overlap diagram of the first retaining ring and the second retaining ring provided by this utility model;

[0028] Figure 10This is a schematic diagram of the structure of the ring-shaped light emitter provided by this utility model;

[0029] Figure 11 This is an exploded front view of the annular light-emitting body provided by this utility model;

[0030] Figure 12 This is an exploded view of the back of the ring-shaped light-emitting body provided by this utility model.

[0031] The diagram includes:

[0032] 1. Light source body; 4. Ring-shaped light emitter; 52. First retaining ring; 53. First groove; 62. Second retaining ring; 63. Second groove; 7. Connector; 8. Rotation drive component; 2. Support plate; 21. First through hole; 9. Object under test; 10. Camera; 31. First mounting plate; 33. Second through hole; 32. First connecting plate; 51. Rotating ring; 61. Ring plate; 64. U-shaped groove; 54. Ring rack; 81. Drive gear; 82. Synchronous belt; 71. Second mounting plate; 72. Third through hole; 73. Second connecting plate; 74. First limiting protrusion; 75. Ring placement part; 41. L-shaped base plate; 42. Vertical PCB board; 43. LED lamp bead; 44. Cover plate; 45. Power cord; 46. Third groove; 411. Fourth groove; 441. Second limiting protrusion. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are one embodiment 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.

[0034] Please refer to Figures 1 to 12 This invention provides a ring light source with an adjustable shading angle.

[0035] like Figure 1 , Figure 2 as well as Figure 3 As shown, the light source body 1 includes a support plate 2 for installation or support. A rotation drive 8 is installed on one side of the support plate 2, and a first through hole 21 is provided on the other side. An annular light emitter 4 is installed on the upper part of the first through hole 21. The annular light emitter 4 emits light into the annular ring and illuminates the surface of the object under test 9. The first through hole 21 is used to allow light to pass through to illuminate the object under test 9.

[0036] In this embodiment, the annular light emitter 4 is suspended above the first through hole 21. Specifically, a first mounting plate 31 is installed on the upper part of the annular light emitter 4, and the first mounting plate 31 is fixedly connected to the annular light emitter 4. The first mounting plate 31 is fixedly connected to the support plate 2 through several first connecting plates 32, thereby stably suspending the annular light emitter 4 above the support plate 2. Without any obstruction, the annular light emitter 4 stably emits annular light. Subsequently, in this embodiment, the annular light emitter 4 is obstructed and adjusted by the first baffle ring 52 and the second baffle ring 62 to change the light emission angle, thereby achieving an adjustment of the light emission range of less than 360°.

[0037] Specifically, the lower part of the annular light source 4 is equipped with a rotating ring 51, and the inner side of the rotating ring 51 is provided with a first baffle ring 52. The first baffle ring 52 is provided with a first groove 53. The first baffle ring 52 is located inside the annular light source 4 and is used to block the light emitted by the annular light source 4. The first groove 53 is used to allow part of the light emitted by the annular light source 4 to pass through, forming a lighting range at a specific angle. When the rotating ring 51 rotates, the first groove 53 rotates around the center of the ring, thereby dynamically adjusting the light emission angle.

[0038] Furthermore, the structure of the aforementioned rotating ring 51 can only form a single blocking area for adjustment, and cannot meet the needs of multi-angle blocking adjustment. Therefore, this embodiment further provides an annular plate 61, which is located below the rotating ring 51 and has a second baffle ring 62 on its inner side. The second baffle ring 62 has a second groove 63, which is located inside the first baffle ring 52 to further block the light transmitted through the first groove 53. By changing the relative position of the second groove 63 and the first groove 53, dual blocking angle adjustment is achieved, thereby precisely controlling the light output range.

[0039] The first and second baffle rings 52 and 62 are made of a high-absorption black matte material, effectively reducing light reflection and scattering and ensuring clear light-shielding boundaries. The opening angles of the first groove 53 and the second groove 63 can be designed to different sizes, thereby forming different combinations of light emission angles to meet the needs of various detection scenarios. In this embodiment, as... Figure 8 As shown, the opening angle of the first groove 53 and the second groove 63 is set to 60°. Continuous angle adjustment within the range of 0° to 60° can be achieved by independently adjusting the rotating ring 51 and the annular plate 61. Figure 8 As shown, when the first groove 53 and the second groove 63 are completely overlapped, the light emission angle reaches the maximum value of 60°; when the two are misaligned to the extreme position, the light is completely blocked, achieving 0° light blocking.

[0040] In this embodiment, the light emitted by the annular light source 4 first passes through the first groove 53 and then through the second groove 63. After the light is adjusted by two levels of blocking, it finally forms a precise and controllable light emission angle, ensuring that the illumination range meets the visual inspection needs of different workstations. By independently controlling the relative position of the rotating ring 51 and the annular plate 61, the overlap angle of the first groove 53 and the second groove 63 can be finely adjusted, so that the illumination boundary is clear and stable, without stray light interference.

[0041] Furthermore, the position of the first groove 53 relative to the second groove 63 can be adjusted by rotation, thereby adjusting the light emission angle of the light source body 1; by controlling the relative rotation of the rotating ring 51 and the annular plate 61, the overlapping area of ​​the first groove 53 and the second groove 63 can be precisely adjusted, realizing stepless adjustment of the light emission angle.

[0042] Furthermore, after the angle between the first groove 53 and the second groove 63 is adjusted, the first retaining ring 52 and the second retaining ring 62 are fixedly connected by the connector 7 to ensure structural stability after adjustment and prevent angular displacement due to vibration or external force. The connector 7 is a locking screw or snap-fit ​​structure, with multiple connectors evenly distributed along the circumference to improve the reliability of the fixation. During adjustment, first loosen the connector 7, manually rotate the annular plate 61 to adjust to the required angle, and then lock it in place by the connector 7 to ensure the relative position of the first retaining ring 52 and the second retaining ring 62 is stable.

[0043] After the first retaining ring 52 and the second retaining ring 62 are fixed together, they are connected to the rotary drive component 8 for transmission; the rotary drive component 8 drives the first retaining ring 52 and the second retaining ring 62 to rotate together, and through multiple drives, 360° annular irradiation is achieved; Figure 9 As shown, if the injection angle is 45°, the first retaining ring 52 and the second retaining ring 62 will rotate together by 45° each time. Full circumference coverage can be completed through eight rotations, ensuring that there are no blind spots in the detection. Each rotation is precisely controlled by the drive system to ensure that the rotation angle is accurate and consistent each time, avoiding cumulative errors.

[0044] like Figure 3 As shown, in this embodiment, the support plate 2 has a first through hole 21 on one side, and the object to be tested 9 is installed at the lower part of the first through hole 21; in other embodiments, the object to be tested 9 can also be placed on the test platform, located directly below the light source body 1, to ensure that its surface is in the optimal illumination area of ​​the ring light source 4; or the object to be tested 9 can be set on a liftable platform, and the height of the platform can be adjusted to adapt to the detection requirements of workpieces of different sizes, ensuring that the illumination distance is constant; or the object to be tested 9 can be set inside or above the first through hole 21 to facilitate optimal illumination.

[0045] like Figure 3As shown, a camera 10 for collecting reflected light from the object 9 is mounted on the upper part of the ring-shaped light source 4. The camera 10 is coaxially arranged with the ring-shaped light source 4, and its optical axis is perpendicular to the surface of the object 9 to ensure that the acquired image is distortion-free. In this embodiment, the camera 10 can be fixed above the support plate 2 by a bracket, and its relative position remains unchanged when it rotates synchronously with the light source body 1, thereby realizing real-time imaging of corresponding viewpoints under multi-angle illumination. After each rotation drive 8 is activated, the camera 10 immediately captures image information under the current illumination conditions. All image data is transmitted to the processing system through the industrial camera interface for subsequent image stitching, surface defect analysis, and three-dimensional morphology reconstruction.

[0046] like Figure 1 As shown, the annular light emitter 4 is equipped with a first mounting plate 31 on its upper part, and the first mounting plate 31 is fixedly connected to the annular light emitter 4; the first mounting plate 31 is provided with a second through hole 33, and the second through hole 33 is aligned with the first through hole 21, so that the reflected light from the object being measured 9 is collected by the camera 10; a plurality of first connecting plates 32 are fixedly connected to the lower part of the circumference of the first mounting plate 31, and a support plate 2 is fixedly connected to the lower part of the first connecting plate 32.

[0047] like Figure 7 As shown, the first baffle ring 52 has a rotating ring 51 at its lower part, and the rotating ring 51 is disposed at the lower part of the annular light source 4; the first baffle ring 52 and the rotating ring 51 are perpendicular to each other, the first baffle ring 52 is in close contact with the inner side of the annular light source 4, the first baffle ring 52 is used to block the light emitted by the annular light source 4, and the first groove 53 is used to allow the light emitted by the annular light source 4 to pass through.

[0048] like Figure 7 As shown, the second retaining ring 62 has an annular plate 61 at its lower part, and the annular plate 61 is disposed at the lower part of the rotating ring 51; the second retaining ring 62 is perpendicular to the annular plate 61, and the second retaining ring 62 is in close contact with the inner side of the first retaining ring 52. The second retaining ring 62 is used to block the light passing through the first groove 53.

[0049] like Figure 6 As shown, the annular plate 61 is disposed in close contact with the rotating ring 51, as... Figure 7 As shown, the annular plate 61 is provided with a plurality of U-shaped grooves 64, and a connector 7 is provided inside the U-shaped grooves 64. The annular plate 61 rotates along the U-shaped grooves 64 to adjust the position of the second groove 63 relative to the first groove 53, thereby adjusting the light emission angle of the light source body 1. The connector 7 fixes the annular plate 61 and the rotating ring 51 together. The rotation drive 8 drives the annular plate 61 and the rotating ring 51 to rotate together to achieve 360° annular illumination.

[0050] like Figure 1and Figure 2 As shown, a ring rack 54 is provided on one side of the rotating ring 51. The rotating drive component 8 is a drive motor. The rotating drive component 8 is installed on the side of the support plate 2 away from the first through hole 21. The end of the rotating drive component 8 passes through the support plate 2 and is on the same side as the ring rack 54. A drive gear 81 is installed at the end of the rotating drive component 8. The drive gear 81 and the ring rack 54 are connected by a synchronous belt 82.

[0051] To provide vertical support for the annular plate 61 and the rotating ring 51, a second mounting plate 71 is installed at the lower part of the annular plate 61. The annular plate 61 contacts the second mounting plate 71 but is not fixed. The second mounting plate 71 is used to support the annular plate 61 and the rotating ring 51. The second mounting plate 71 is provided with a third through hole 72, which is aligned with the first through hole 21, so that reflected light can pass through smoothly and be captured by the camera 10, ensuring clear and stable imaging.

[0052] A plurality of second connecting plates 73 are fixedly connected to the lower circumference of the first mounting plate 31, and the second mounting plate 71 is fixedly connected to the lower part of the second connecting plate 73; by suspending the second connecting plate 73 below the first mounting plate 31, the vertical support of the annular plate 61 and the rotating ring 51 is ensured.

[0053] Furthermore, in the vertical direction, an annular light-emitting body 4 is provided on the upper part of the rotating ring 51. The annular light-emitting body 4 can vertically limit the rotating ring 51 to prevent it from axially shifting during rotation and ensure smooth rotation.

[0054] Furthermore, in the horizontal direction, the second mounting plate 71 is provided with a first limiting protrusion 74 on its circumference. The second mounting plate 71 and the inner side of the first limiting protrusion 74 form an annular placement part 75, which is used to place the annular plate 61. The first limiting protrusion 74 is used to limit the movement of the annular plate 61 in the horizontal direction, preventing it from radially deviating during rotation, ensuring that the annular plate 61 and the rotating ring 51 always rotate concentrically, and improving structural stability and optical path adjustment accuracy.

[0055] like Figures 10 to 12As shown, the annular light source 4 includes an L-shaped base plate 41, a vertical PCB board 42 mounted on the L-shaped base plate 41, LED beads 43 mounted on the vertical PCB board 42, and a cover plate 44 covering the L-shaped base plate 41. The LED beads 43 emit light and are emitted from between the L-shaped base plate 41 and the cover plate 44 to form a uniform annular light band. When the annular light source 4 is installed and fixed, the L-shaped base plate 41 and the first mounting plate 31 are fixed together by connecting bolts to ensure that the annular light source 4 is stably installed and remains coaxial with the rotating ring 51. At the same time, there is a small gap between the lower part of the annular light source 4 and the rotating ring 51 to avoid frictional resistance and ensure that the rotating ring 51 can rotate smoothly under the drive gear 81. The gap design combines the functions of limiting and flexible rotation. The vertical part of the ring light-emitting body 4 provides axial constraint at the top, and the ring placement part 75 of the second mounting plate 71 provides radial positioning at the bottom, thus forming a stable and reliable concentric rotation structure. This ensures that the light emitted by the LED bead 43 is always in a fixed spatial position, providing a uniform and stable ring illumination foundation for subsequent optical imaging.

[0056] In this embodiment, the LED beads 43 are installed perpendicularly to the vertical PCB board 42 to ensure that the light is emitted uniformly in the horizontal direction. In other embodiments, the LED beads 43 can also be installed at an angle on the vertical PCB board 42. The angle of the LED beads 43 can be adjusted according to optical requirements. The LED beads 43 emit light at an angle into the ring to focus the illumination area and enhance the central light intensity.

[0057] Furthermore, the annular light emitter 4 also includes a power line 45. The L-shaped base plate 41 is provided with a third groove 46. The power line 45 passes through the third groove 46 and is electrically connected to the vertical PCB board 42 to provide power to the LED beads 43 and drive the LED beads 43 to emit light. The third groove 46 extends along the vertical section of the L-shaped base plate 41. When the annular plate 61 and the rotating ring 51 rotate, the annular light emitter 4 is suspended and mounted on the lower part of the first mounting plate 31 and does not rotate. The power line 45 also does not need to rotate and is a static wiring.

[0058] Furthermore, such as Figure 11 and Figure 12As shown, to more firmly fix the vertical PCB board 42 and LED beads 43 onto the L-shaped base plate 41 and prevent loosening due to vibration or long-term operation, the L-shaped base plate 41 is provided with a fourth groove 411, the interior of which is used to accommodate the lower part of the vertical PCB board 42; at the same time, the inner side of the cover plate 44 is provided with a second limiting protrusion 441, which is used to limit the upper part of the vertical PCB board 42; through the clamping action of the fourth groove 411 and the second limiting protrusion 441, the vertical PCB board 42 is omnidirectionally fixed, effectively preventing displacement or loosening under vibration; at the same time, this structure facilitates the positioning of the vertical PCB board 42 during assembly, improving installation efficiency. The LED beads 43 are fixed to the vertical PCB board 42 by soldering and are electrically connected to the power line 45 through wires to ensure stable and reliable power transmission. The entire ring-shaped light emitter 4 completes power supply and light output in a static state. In addition, the cover plate 44 and the L-shaped base plate 41 are fastened with screws to form a closed structure, which effectively prevents dust and water, and improves the reliability of the ring light emitter 4 in complex environments.

[0059] To dissipate heat from the vertical PCB board 42 and the LED beads 43, the emitting part of the LED beads 43 is in direct contact with the outside to achieve direct heat dissipation. On the other hand, a thermally conductive silicone pad is provided on the side of the vertical PCB board 42 away from the LED beads 43. The thermally conductive silicone pad conducts the heat generated by the vertical PCB board 42 to the L-shaped base plate 41. The L-shaped base plate 41 is made of metal and has both structural support and heat dissipation functions. Its surface is provided with heat dissipation ribs to increase the contact area with air and improve the efficiency of natural convection heat dissipation.

[0060] Assembly steps of the light source body 1:

[0061] Step S1: Take out the second mounting plate 71 and place the annular plate 61 on the annular placement part 75 on the second mounting plate 71. The annular plate 61 has stable support and a first limiting protrusion 74 on the side. The first limiting protrusion 74 is used to limit the movement of the annular plate 61 in the horizontal direction and prevent it from radially deviating during rotation.

[0062] After the light source body 1 is assembled, the first retaining ring 52 and the second retaining ring 62 are inserted into the annular light source 4 and contact the inner side of the annular light source 4 to form a double limiting structure, which effectively constrains the radial displacement of the rotating ring 51 and the annular plate 61 during the rotation process, ensuring that they rotate smoothly and without shaking.

[0063] Step S2: Vertically mount the rotating ring 51 onto the annular plate 61. The rotating ring 51 is located outside the annular plate 61, and the first retaining ring 52 and the second retaining ring 62 are in contact with each other. The rotating ring 51 and the annular plate 61 are locked and fixed by the connector 7 to ensure that the relative positions of the first retaining ring 52 and the second retaining ring 62 are stable.

[0064] Step S3: A timing belt 82 is installed on the outer side of the annular rack 54 on the rotating ring 51; the timing belt 82 drives the rotating ring 51 and the annular plate 61 to rotate.

[0065] Step S4: Take out the first mounting plate 31. The lower part of the first mounting plate 31 is equipped with an annular light-emitting element 4. The first mounting plate 31 is connected to the L-shaped base plate 41 by screws to ensure that the annular light-emitting element 4 is firmly installed on the lower part of the first mounting plate 31. At the same time, the annular light-emitting element 4 is placed on the upper part of the rotating ring 51, but is not fixed and there is a small gap. This allows the annular light-emitting element 4 to remain fixed during rotation, while the rotating ring 51 and the annular plate 61 can rotate.

[0066] Step S5: Install the second connecting plate 73 on the side of the first mounting plate 31. The second connecting plate 73 fixes the first mounting plate 31 and the second mounting plate 71 together to form a stable support frame and ensure the stability of the overall structure during operation.

[0067] Step S6: Install the first connecting plate 32 on the side of the first mounting plate 31. The first connecting plate 32 fixes the first mounting plate 31 to the support plate 2, thereby suspending the above structure stably above the support plate 2 and ensuring that the ring light emitter 4 maintains a stable posture when working.

[0068] Step S7: Install the rotary drive 8 on the support plate 2. Its output shaft passes through the support plate 2 and meshes with the inner side of the synchronous belt 82. The rotary drive 8 rotates to drive the synchronous belt 82 to run, thereby driving the rotating ring 51 to rotate at a constant speed around the central axis of the annular light source 4, thus completing the assembly of the light source body 1.

[0069] The steps for adjusting the light emission angle of the light source body 1;

[0070] Step S11: First, loosen the connector 7 and manually rotate the annular plate 61. The rotating annular plate 61 rotates along the U-shaped groove 64 to adjust the position of the second groove 63 relative to the first groove 53, thereby adjusting the light emission angle of the light source body 1.

[0071] Step S12: After adjusting to the required angle, lock and fix it with the connector 7 to ensure that the relative positions of the first retaining ring 52 and the second retaining ring 62 are stable; at the same time, the rotating ring 51 and the annular plate 61 are also fixed together and will rotate together in the future.

[0072] Step S13: The rotating drive component 8 drives the first retaining ring 52 and the second retaining ring 62 to rotate together. Each rotation is 45°, and 360° ring irradiation can be completed through eight rotations to ensure that there are no blind spots in the detection. Each rotation is precisely controlled by the drive system to ensure that the rotation angle is accurate and consistent each time, avoiding cumulative errors.

[0073] Step S14: After each rotation, the camera 10 immediately captures image information under the current lighting conditions. The software then stitches and analyzes the acquired images to achieve comprehensive identification, location, and judgment of surface defects or features of the object being tested.

[0074] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A ring light source with an adjustable shading angle, characterized in that: The light source includes a light source body (1), which includes an annular light emitter (4). The annular light emitter (4) has a first baffle ring (52) on its inner side, a first groove (53) on its first baffle ring (52), a second baffle ring (62) on its inner side, and a second groove (63) on its second baffle ring (62). The light emitted by the annular light emitter (4) first passes through the first groove (53) and then through the second groove (63). The position of the first groove (53) relative to the second groove (63) is adjusted by rotation, thereby adjusting the light emission angle of the light source body (1). The first baffle ring (52) and the second baffle ring (62) are also fixedly connected by a connector (7) and are connected to a rotating drive (8). The rotating drive (8) drives the first baffle ring (52) and the second baffle ring (62) to rotate together to achieve 360° annular illumination.

2. The ring light source with adjustable shading angle according to claim 1, characterized in that: The light source body (1) also includes a support plate (2) installed at the lower part of the ring light source (4). The support plate (2) has a first through hole (21) on one side. The object to be tested (9) is installed at the lower part of the first through hole (21). A camera (10) for collecting the reflected light from the object to be tested (9) is installed at the upper part of the ring light source (4).

3. The ring light source with adjustable shading angle according to claim 2, characterized in that: The ring-shaped light emitter (4) is equipped with a first mounting plate (31) on its upper part, and the first mounting plate (31) is fixedly connected to the ring-shaped light emitter (4); the first mounting plate (31) is provided with a second through hole (33), and the second through hole (33) is aligned with the first through hole (21), so that the reflected light of the object under test (9) is collected by the camera (10); a number of first connecting plates (32) are fixedly connected to the lower part of the circumference of the first mounting plate (31), and a support plate (2) is fixedly connected to the lower part of the first connecting plate (32).

4. The ring light source with adjustable shading angle according to claim 3, characterized in that: The first baffle ring (52) has a rotating ring (51) at its lower part, and the rotating ring (51) is located at the lower part of the annular light source (4); the first baffle ring (52) and the rotating ring (51) are perpendicular to each other, the first baffle ring (52) is close to the inner side of the annular light source (4), the first baffle ring (52) is used to block the light emitted by the annular light source (4), and the first groove (53) is used to allow the light emitted by the annular light source (4) to pass through.

5. A ring light source with an adjustable shading angle according to claim 4, characterized in that: The second retaining ring (62) has an annular plate (61) at its lower part, and the annular plate (61) is located at the lower part of the rotating ring (51); the second retaining ring (62) is perpendicular to the annular plate (61), the second retaining ring (62) is close to the inner side of the first retaining ring (52), and the second retaining ring (62) is used to block the light passing through the first groove (53).

6. The ring light source with adjustable shading angle according to claim 5, characterized in that: The annular plate (61) is set close to the rotating ring (51). The annular plate (61) is provided with several U-shaped grooves (64). A connector (7) is provided inside the U-shaped groove (64). The annular plate (61) rotates along the U-shaped groove (64) to adjust the position of the second groove (63) relative to the first groove (53), thereby adjusting the light emission angle of the light source body (1). The connector (7) fixes the annular plate (61) and the rotating ring (51) together. The rotation drive (8) drives the annular plate (61) and the rotating ring (51) to rotate together to achieve 360° annular irradiation.

7. A ring light source with an adjustable shading angle according to claim 5, characterized in that: The rotating ring (51) is provided with an annular rack (54) on one side. The rotating drive (8) is a drive motor. The rotating drive (8) is installed on the side of the support plate (2) away from the first through hole (21). The end of the rotating drive (8) passes through the support plate (2) and is on the same side as the annular rack (54). The end of the rotating drive (8) is provided with a drive gear (81). The drive gear (81) and the annular rack (54) are connected by a synchronous belt (82).

8. The ring light source with adjustable shading angle according to claim 7, characterized in that: The lower part of the annular plate (61) is provided with a second mounting plate (71), which is used to support the annular plate (61) and the rotating ring (51). The second mounting plate (71) is provided with a third through hole (72), which is aligned with the first through hole (21). The lower part of the circumference of the first mounting plate (31) is fixedly connected with a plurality of second connecting plates (73), and the lower part of the second connecting plates (73) is fixedly connected with the second mounting plate (71). The circumference of the second mounting plate (71) is provided with a first limiting protrusion (74). The inner side of the second mounting plate (71) and the first limiting protrusion (74) forms an annular placement part (75), which is used to place the annular plate (61). The first limiting protrusion (74) is used to limit the radial movement of the annular plate (61).

9. A ring light source with an adjustable shading angle according to claim 3, characterized in that: The annular light emitter (4) includes an L-shaped base plate (41), a vertical PCB board (42) mounted on the L-shaped base plate (41), LED beads (43) mounted on the vertical PCB board (42), and a cover plate (44) covering the L-shaped base plate (41); the LED beads (43) emit light from between the L-shaped base plate (41) and the cover plate (44); the L-shaped base plate (41) is fixedly connected to the first mounting plate (31); the annular light emitter (4) also includes a power line (45), the L-shaped base plate (41) is provided with a third groove (46), the power line (45) passes through the third groove (46) and is electrically connected to the vertical PCB board (42) to provide power to the LED beads (43) and drive the LED beads (43) to emit light.

10. A ring light source with an adjustable shading angle according to claim 9, characterized in that: The L-shaped base plate (41) is provided with a fourth groove (411), the interior of which is used to accommodate the lower part of the vertical PCB board (42). The inner side of the cover plate (44) is provided with a second limiting protrusion (441), which is used to limit the upper part of the vertical PCB board (42). The vertical PCB board (42) is provided with a thermally conductive silicone pad on the side away from the LED beads (43), which conducts the heat generated by the vertical PCB board (42) to the L-shaped base plate (41).

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