A camera support for photographing an arc
Patent Information
- Application Number
- CN202522072410.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-10-13
- Estimated Expiration
- 2035-09-26
AI Technical Summary
[0004]本实用新型的目的在于克服现有技术的不足，适应现实需要，提供一种拍摄弧面的相机支架，以解决当前视觉检测装置容易因检测产品的弯曲程度大导致相机拍图严重失焦的技术问题
1、本实用新型通过设计的滑台、第一安装架、第二安装架、条形光源、弹性杆件和轴承，滑台通过固定支架与外部机械手等升降设备安装，在对物体表面瑕疵检测过程中，将筒状检测物放置于一个可旋转的外部工作平台上，通过外部机械手等设备将相机的镜头从筒状物中心降到物体内部，然后通过滑台带动第一安装架上移动，从而对第一安装架上相机的镜头位置进行调节，并使第二安装架上弹性杆件另一端轴承抵住筒状结构内壁检测面，检测时，计算好相机的拍照视野，然后通过外部平台带动筒状物体转动，当物体转动时，轴承随弧面起伏滚动，弹性杆件根据弧面曲率自动调整伸缩量，确保相机镜头到检测面的距离固定，同时，两侧的条形光源随相机同步移动，提供均匀光照，避免弧形表面反光或阴影干扰检测，然后让工作平台旋转一段距离停下拍一次照，使得筒状物结构的内壁全部被拍到，通过算法检测判断筒状物内壁是否有瑕疵脏污等，以此实现检测弧面的功能，解决当前视觉检测装置容易因检测产品的弯曲程度大导致相机拍图严重失焦的技术问题，因此，本实用新型具备对弧形产品表面进行瑕疵检测的优点。
Smart Images
Figure CN224850412U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of visual inspection equipment technology, and more specifically, to a camera bracket for shooting curved surfaces. Background Technology
[0002] Visual inspection devices typically have a fixed camera position. The product is transported by a conveyor belt and placed under the camera lens. The camera takes pictures to measure and detect defects. After the inspection is completed, the software determines whether the product is OK or NG and then performs further processing. During the inspection process, since the product is transported to a fixed position, the relative distance between the camera and the object being measured is fixed.
[0003] Visual inspection requires a fixed relative distance between the camera and the object being inspected. For the detection of defects on uneven surfaces, the depth of field of the lens is the main factor. However, the depth of field of the lens is limited, and cameras cannot capture clear images of curved surfaces with large curvatures. Therefore, we propose a camera stand for shooting curved surfaces. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a camera bracket for shooting curved surfaces, so as to solve the technical problem that current visual inspection devices are prone to serious defocusing of camera images due to the large curvature of the inspected products.
[0005] To solve the above technical problems, this utility model provides the following technical solution: a camera bracket for shooting curved surfaces, including a slide table, a fixed bracket arranged on the top of the slide table, a first mounting bracket slidably arranged on the front side of the slide table, a camera arranged at the bottom of the first mounting bracket, a lens at one end of the camera, a second mounting bracket arranged on the side of the first mounting bracket near the lens, two sets of symmetrical strip light sources arranged on the side of the second mounting bracket away from the lens, an elastic rod arranged at the bottom end of the second mounting bracket facing the strip light sources, and a bearing rotatably arranged at the end of the elastic rod away from the second mounting bracket; The bearing outer ring is fitted with a rubber sleeve, which includes an inner layer, an outer layer, and a honeycomb layer. The inner layer is arranged on the outer ring of the bearing, the outer layer is located outside the inner layer, and the honeycomb layer is located between the inner layer and the outer layer.
[0006] Preferably, a slide rail is arranged on the front side of the slide table, and a slider is slidably arranged on the slide rail, the slider being connected to the first mounting bracket.
[0007] Preferably, a cylinder is arranged on the rear side of the slide, and a rectangular through hole is opened at the bottom of the front side of the slide.
[0008] Preferably, the first mounting bracket includes a vertical mounting plate, a horizontal mounting plate, and a longitudinal mounting plate. The vertical mounting plate is connected to the slider, the horizontal mounting plate is arranged at the bottom of the vertical mounting plate, the camera is arranged on the horizontal mounting plate, the longitudinal mounting plate is arranged on the rear side of the vertical mounting plate, the longitudinal mounting plate passes through a rectangular through hole, and the longitudinal mounting plate is connected to the moving block at the bottom of the cylinder.
[0009] Preferably, the surface of the second mounting bracket is provided with an upper U-shaped slot and a lower U-shaped slot, the upper U-shaped slot is located above the lower U-shaped slot, the upper edge of the upper U-shaped slot is connected to the longitudinal mounting plate, and the two sets of strip light sources are arranged on the upper and lower edges of the lower U-shaped slot.
[0010] Preferably, the elastic rod includes a main rod, a secondary rod, and a spring. The main rod is arranged on the second mounting bracket, the bearing is rotatably arranged at the end of the secondary rod, the spring is arranged between the opposite ends of the main rod and the secondary rod, and a limiting sleeve is arranged at one end of the secondary rod located on the spring, and the limiting sleeve is fitted onto the main rod.
[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the design of a sliding table, a first mounting frame, a second mounting frame, a strip light source, elastic rods, and bearings, uses a sliding table mounted on a fixed bracket and connected to an external lifting device such as a robotic arm. During the inspection of surface defects, the cylindrical object to be inspected is placed on a rotatable external working platform. The external robotic arm or similar device lowers the camera lens from the center of the cylindrical object into its interior. The sliding table then moves the first mounting frame, adjusting the position of the camera lens on the first mounting frame. Simultaneously, the bearing at the other end of the elastic rod on the second mounting frame abuts against the inner wall of the cylindrical structure's inspection surface. During inspection, the camera's field of view is calculated, and then the external platform rotates the cylindrical object. When the object rotates, the bearing rolls with the undulations of the curved surface, and the elastic rod automatically adjusts its extension and contraction according to the curvature of the curved surface to ensure that the distance between the camera lens and the inspection surface is fixed. At the same time, the strip light sources on both sides move synchronously with the camera to provide uniform illumination and avoid interference from reflections or shadows on the curved surface. Then, the working platform rotates a certain distance and stops to take a picture, so that the entire inner wall of the cylindrical structure is captured. The algorithm detects and judges whether there are defects or dirt on the inner wall of the cylindrical object, thereby realizing the function of detecting curved surfaces. This solves the technical problem that current visual inspection devices are prone to serious camera defocusing when the product being inspected is curved. Therefore, this utility model has the advantage of detecting defects on the surface of curved products.
[0012] 2. This utility model also incorporates a rubber sleeve on the outer ring of the bearing. The inner and outer layers of the rubber sleeve employ a honeycomb structure, and both layers are made of rubber. Because rubber possesses excellent elasticity and flexibility, it can deform under external force. The honeycomb design further enhances the elasticity and compressibility of the rubber sleeve, allowing it to flexibly deform according to the pressure and shape of the curved surface when in contact with it. When the bearing contacts the curved surface of an object, the rubber sleeve is subjected to pressure, compressing the gaps in the honeycomb layer and causing the rubber material to diffuse outwards, thereby increasing the contact area with the curved surface. This contact is adaptive, changing with the curvature of the curved surface. The increased contact area distributes the pressure that was originally concentrated at a few contact points between the bearing and the curved surface. By dispersing pressure over a larger area, the pressure per unit area is effectively reduced. The uniformly dispersed pressure and good fit can reduce vibration and wobbling of the bearing during rotation, and improve contact stability. At the same time, the elasticity of the rubber sleeve can also play a certain buffering role, making the bearing rotate more smoothly and reducing noise and energy loss caused by friction and impact. For curved surfaces with large curvature changes, traditional bearings may find it difficult to maintain a good contact state at all times. However, bearings with honeycomb layer rubber sleeves can better follow the curvature changes of the curved surface due to the deformability of the rubber sleeves, ensuring that they maintain a tight fit with the curved surface throughout the inspection process. This ensures a stable distance between the camera lens and the inspection surface, thus further guaranteeing the effectiveness of defect detection on the surface of curved products. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the first overall structure of the present invention; Figure 2 This is a schematic diagram of the second overall structure of the present invention; Figure 3 This is a schematic diagram of the slide structure of this utility model; Figure 4 This is a schematic diagram of the first mounting frame structure of this utility model; Figure 5 This is a schematic diagram of the second mounting bracket structure of this utility model; Figure 6 This is a schematic diagram of the elastic rod structure of this utility model; Figure 7 This is a schematic diagram of the rubber sleeve structure of this utility model.
[0014] Explanation of the labels in the diagram: 1. Slide table; 101. Cylinder; 102. Slide rail; 103. Slider; 104. Rectangular through hole; 2. Fixed bracket; 3. First mounting bracket; 301. Vertical mounting plate; 302. Horizontal mounting plate; 303. Longitudinal mounting plate; 4. Camera; 5. Lens; 6. Second mounting bracket; 601. Upper U-shaped groove; 602. Lower U-shaped groove; 7. Strip light source; 8. Elastic rod; 801. Main rod; 802. Secondary rod; 803. Spring; 804. Limiting sleeve; 9. Bearing; 10. Rubber sleeve; 1001. Inner layer; 1002. Outer layer; 1003. Honeycomb layer. Detailed Implementation
[0015] like Figures 1 to 7 As shown, the present invention relates to a camera bracket for shooting curved surfaces, including a slide table 1, a fixed bracket 2 arranged on the top of the slide table 1, a first mounting bracket 3 slidably arranged on the front side of the slide table 1, a camera 4 arranged at the bottom of the first mounting bracket 3, a lens 5 at one end of the camera 4, a second mounting bracket 6 arranged on the side of the first mounting bracket 3 near the lens 5, two sets of symmetrical strip light sources 7 arranged on the side of the second mounting bracket 6 away from the lens 5, an elastic rod 8 arranged at the bottom end of the second mounting bracket 6 facing the strip light sources 7, and a bearing 9 rotatably arranged at the end of the elastic rod 8 away from the second mounting bracket 6. The slide table 1 is connected and installed to external robotic arms and other equipment via a fixed bracket 2. During the inspection of surface defects, the cylindrical object is placed on a rotatable external work platform. The external robotic arm and other equipment lower the camera 4 (lens 5) from the center of the cylindrical object into the interior. Then, the slide table 1 moves the first mounting bracket 3, thereby adjusting the position of the camera 4 (lens 5) on the first mounting bracket 3. Simultaneously, the bearing 9 at the other end of the elastic rod 8 on the second mounting bracket 6 abuts against the inner wall inspection surface of the cylindrical structure. During inspection, the field of view of the camera 4 is calculated. An external platform drives the cylindrical object to rotate. As the object rotates, the bearing 9 rolls with the undulations of the curved surface, and the elastic rod 8 automatically adjusts its extension and contraction according to the curvature of the curved surface to ensure that the distance between the camera lens 5 and the detection surface is fixed. At the same time, the strip light sources 7 on both sides move synchronously with the camera 4 to provide uniform illumination and avoid interference from reflections or shadows on the curved surface. Then, the working platform rotates a certain distance and stops to take a picture, so that the entire inner wall of the cylindrical structure is captured. The algorithm detects and judges whether there are defects or dirt on the inner wall of the cylindrical object, thereby realizing the function of detecting the curved surface.
[0016] Specifically, a slide rail 102 is arranged on the front side of the slide table 1, and a slider 103 is slidably arranged on the slide rail 102. The slider 103 is connected to the first mounting frame 3. A cylinder 101 is arranged on the rear side of the slide table 1, and a rectangular through hole 104 is opened at the bottom of the front side of the slide table 1. The first mounting frame 3 includes a vertical mounting plate 301, a horizontal mounting plate 302, and a longitudinal mounting plate 303. The vertical mounting plate 301 is connected to the slider 103. The horizontal mounting plate 302 is arranged at the bottom of the vertical mounting plate 301, and the camera 4 is arranged on the horizontal mounting plate 302. The longitudinal mounting plate 303 is arranged at the rear side of the vertical mounting plate 301. The longitudinal mounting plate 303 passes through the rectangular through hole 104 and is connected to the moving block at the bottom of the cylinder 101. The first mounting frame 3 can slide with the cooperation of the slide rail 102 and the slider 103. Then, the cylinder 101 can drive the longitudinal mounting plate 303 to move horizontally, thereby driving the first mounting frame 3 to move.
[0017] Furthermore, the surface of the second mounting bracket 6 is provided with an upper U-shaped slot 601 and a lower U-shaped slot 602. The upper U-shaped slot 601 is located above the lower U-shaped slot 602. The upper edge of the upper U-shaped slot 601 is connected to the longitudinal mounting plate 303. Two sets of strip light sources 7 are arranged on the upper and lower edges of the lower U-shaped slot 602. The lower U-shaped slot 602 corresponds to the lens 5, so that the lens 5 can capture images of the object surface without being affected.
[0018] Furthermore, the elastic rod 8 includes a main rod 801, a secondary rod 802, and a spring 803. The main rod 801 is arranged on the second mounting bracket 6, and the bearing 9 is rotatably arranged at the end of the secondary rod 802. The spring 803 is arranged between the opposite ends of the main rod 801 and the secondary rod 802. A limiting sleeve 804 is arranged at one end of the secondary rod 802 located on the spring 803, and the limiting sleeve 804 is fitted onto the main rod 801. The secondary rod 802 can be extended and retracted with the spring 803, which facilitates the elastic rod 8 to automatically adjust the amount of extension and retraction according to the curvature of the arc surface. Moreover, the limiting sleeve 804 plays a limiting role, ensuring that the secondary rod 802 will not deviate when it extends and retracts.
[0019] In an embodiment of this utility model, a rubber sleeve 10 is fitted on the outer ring of the bearing 9. The rubber sleeve 10 includes an inner layer 1001, an outer layer 1002, and a honeycomb layer 1003. The inner layer 1001 is arranged on the outer ring of the bearing 9, the outer layer 1002 is located outside the inner layer 1001, and the honeycomb layer 1003 is located between the inner layer 1001 and the outer layer 1002. The inner layer 1001 and outer layer 1002 are made of rubber. Because rubber itself has good elasticity and flexibility, the rubber sleeve 10 can deform under external force. The design of the honeycomb layer 1003 further enhances the elasticity and compressibility of the rubber sleeve 10, allowing it to flexibly deform according to the pressure and shape of the curved surface when in contact with it. When the bearing 9 contacts the curved surface of an object, the rubber sleeve 10 is subjected to pressure, the gaps in the honeycomb layer 1003 are compressed, and the rubber material diffuses outwards, thereby increasing the contact area with the curved surface. This contact is adaptive, changing with the curvature of the curved surface. The increased contact area disperses the pressure, originally concentrated at a few contact points between the bearing 9 and the curved surface, to a larger area, effectively reducing the single-point pressure. The pressure on the surface area, the uniformly distributed pressure, and the good fit can reduce the vibration and shaking of the bearing 9 during rotation, and improve the stability of the contact. At the same time, the elasticity of the rubber sleeve 10 can also play a certain buffering role, making the bearing 9 rotate more smoothly and reducing noise and energy loss caused by friction and impact. For curved surfaces with large curvature changes, traditional bearings 9 may have difficulty maintaining a good contact state at all times. However, the bearing 9 with honeycomb layer 1003 rubber sleeve 10 can better follow the curvature change of the curved surface due to the deformability of the rubber sleeve 10, ensuring that it maintains a tight fit with the curved surface throughout the inspection process. This ensures the stability of the distance between the camera lens 5 and the inspection surface, thus further ensuring the effectiveness of defect detection on the surface of curved products.
[0020] Working Principle: This embodiment provides a camera bracket for photographing curved surfaces. First, during the inspection of surface defects, a cylindrical inspection object is placed on a rotatable external work platform. Using an external robotic arm or similar device, the camera 4 (lens 5) is lowered from the center of the cylindrical object into the interior. Then, the slide 1 moves the first mounting bracket 3, thereby adjusting the position of the camera 4 (lens 5) on the first mounting bracket 3. Simultaneously, the bearing 9 at the other end of the elastic rod 8 on the second mounting bracket 6 abuts against the inner wall of the cylindrical structure's inspection surface. During inspection, the field of view of the camera 4 is calculated. Then, the cylindrical object is rotated by an external platform. When the object rotates, the bearing 9 rolls with the undulation of the arc surface, and the elastic rod 8 automatically adjusts the extension and contraction according to the curvature of the arc surface to ensure that the distance between the camera lens 5 and the detection surface is fixed. At the same time, the strip light sources 7 on both sides move synchronously with the camera 4 to provide uniform illumination and avoid the interference of reflection or shadow on the arc surface with the detection. Then, the working platform is rotated a certain distance and stopped to take a picture, so that the inner wall of the cylindrical structure is completely captured. The algorithm detects and judges whether there are defects or dirt on the inner wall of the cylindrical object, thereby realizing the function of detecting the arc surface. The inner layer 1001 and outer layer 1002 are made of rubber. Because rubber itself has good elasticity and flexibility, the rubber sleeve 10 can deform under external force. The design of the honeycomb layer 1003 further enhances the elasticity and compressibility of the rubber sleeve 10, allowing it to flexibly deform according to the pressure and shape of the curved surface when in contact with it. When the bearing 9 contacts the curved surface of an object, the rubber sleeve 10 is subjected to pressure, the gaps in the honeycomb layer 1003 are compressed, and the rubber material diffuses outwards, thereby increasing the contact area with the curved surface. This contact is adaptive, changing with the curvature of the curved surface. The increased contact area disperses the pressure, originally concentrated at a few contact points between the bearing 9 and the curved surface, to a larger area, effectively reducing the single-point pressure. The pressure on the surface area, the uniformly distributed pressure, and the good fit can reduce the vibration and shaking of the bearing 9 during rotation, and improve the stability of the contact. At the same time, the elasticity of the rubber sleeve 10 can also play a certain buffering role, making the bearing 9 rotate more smoothly and reducing noise and energy loss caused by friction and impact. For curved surfaces with large curvature changes, traditional bearings 9 may have difficulty maintaining a good contact state at all times. However, the bearing 9 with honeycomb layer 1003 rubber sleeve 10 can better follow the curvature change of the curved surface due to the deformability of the rubber sleeve 10, ensuring that it maintains a tight fit with the curved surface throughout the inspection process. This ensures the stability of the distance between the camera lens 5 and the inspection surface, thus further ensuring the effectiveness of defect detection on the surface of curved products.
[0021] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A camera stand for shooting curved surfaces, characterized in that, Includes a slide (1), a fixed bracket (2) is arranged on the top of the slide (1), a first mounting bracket (3) is slidably arranged on the front side of the slide (1), a camera (4) is arranged at the bottom of the first mounting bracket (3), one end of the camera (4) is a lens (5), a second mounting bracket (6) is arranged on the side of the first mounting bracket (3) near the lens (5), two sets of symmetrical strip light sources (7) are arranged on the side of the second mounting bracket (6) away from the lens (5), an elastic rod (8) is arranged at the bottom end of the second mounting bracket (6) facing the strip light source (7), and a bearing (9) is rotatably arranged at the end of the elastic rod (8) away from the second mounting bracket (6). The bearing (9) is fitted with a rubber sleeve (10) on its outer ring. The rubber sleeve (10) includes an inner layer (1001), an outer layer (1002), and a honeycomb layer (1003). The inner layer (1001) is arranged on the outer ring of the bearing (9), the outer layer (1002) is located outside the inner layer (1001), and the honeycomb layer (1003) is located between the inner layer (1001) and the outer layer (1002).
2. The camera holder for shooting curved surfaces according to claim 1, characterized in that, The slide table (1) has a slide rail (102) arranged on the front side, and a slider (103) is slidably arranged on the slide rail (102), and the slider (103) is connected to the first mounting bracket (3).
3. A camera holder for shooting curved surfaces according to claim 2, characterized in that, A cylinder (101) is arranged on the rear side of the slide (1), and a rectangular through hole (104) is opened at the bottom front side of the slide (1).
4. A camera holder for shooting curved surfaces according to claim 3, characterized in that, The first mounting bracket (3) includes a vertical mounting plate (301), a horizontal mounting plate (302) and a longitudinal mounting plate (303). The vertical mounting plate (301) is connected to the slider (103). The horizontal mounting plate (302) is arranged at the bottom of the vertical mounting plate (301). The camera (4) is arranged on the horizontal mounting plate (302). The longitudinal mounting plate (303) is arranged on the rear side of the vertical mounting plate (301). The longitudinal mounting plate (303) passes through a rectangular through hole (104) and is connected to the moving block at the bottom of the cylinder (101).
5. A camera holder for shooting curved surfaces according to claim 4, characterized in that, The second mounting bracket (6) has an upper U-shaped slot (601) and a lower U-shaped slot (602) on its surface. The upper U-shaped slot (601) is located above the lower U-shaped slot (602). The upper edge of the upper U-shaped slot (601) is connected to the longitudinal mounting plate (303). The two sets of strip light sources (7) are arranged on the upper and lower edges of the lower U-shaped slot (602).
6. A camera holder for shooting curved surfaces according to claim 1, characterized in that, The elastic rod (8) includes a main rod (801), a secondary rod (802) and a spring (803). The main rod (801) is arranged on the second mounting bracket (6). The bearing (9) is rotatably arranged at the end of the secondary rod (802). The spring (803) is arranged between the opposite ends of the main rod (801) and the secondary rod (802). A limiting sleeve (804) is arranged at one end of the secondary rod (802) located on the spring (803), and the limiting sleeve (804) is sleeved on the main rod (801).