Jewelry detector with multi-angle observation structure

Abstract

The utility model relates to the technical field of jewelry detection, in particular to a jewelry detector with a multi-angle observation structure, which comprises a main body frame, a bearing platform, an optical acquisition unit, an angle adjusting assembly and a damping support unit. The optical acquisition unit realizes multi-angle observation through staggered lenses and a rotating mechanism, the angle adjusting assembly accurately controls transverse and longitudinal positions, the clamping device is provided with a flexible gasket to protect jewelry, and the damping supporting unit effectively reduces operation vibration. The jewelry detection system can capture jewelry details in all directions, detection blind areas are avoided, the imaging quality and the detection precision are improved, and the jewelry detection system has portability and stability and is suitable for various jewelry detection requirements.

Description

Technical Field

[0001] This utility model belongs to the technical field of jewelry testing equipment, specifically a jewelry testing instrument with a multi-angle observation structure. Background Technology

[0002] Currently, jewelry testing requires meticulous observation and analysis of the jewelry's appearance, cut surfaces, and material properties to ensure its quality and value. However, existing testing equipment mostly employs a fixed observation structure, resulting in a limited range of observation angles and difficulty in comprehensively covering the different shapes and complex cut surfaces of jewelry, thus affecting the comprehensiveness and accuracy of the testing. Furthermore, while a microscope device (publication number CN103454761B) allows for multi-angle observation through cantilever rotation and stage rotation, its large size and complex structure make it difficult to meet the needs of rapid on-site testing. Additionally, it lacks optical optimization for high-reflectivity jewelry materials, making image clarity susceptible to glare interference. A medical endoscope design (publication number CN113116276B), although possessing multi-angle observation capabilities, has a flexible insertion tube and mechanical transmission components more suited to the medical field, making it unsuitable for the stable support and precise adjustment requirements of jewelry testing, and its adaptability to jewelry material characteristics is weak. These findings indicate that existing equipment still has room for improvement in meeting the comprehensive requirements of multi-angle observation, portability, and image quality in jewelry testing. Utility Model Content

[0003] This invention addresses the problems of existing technologies by providing a jewelry testing instrument with a multi-angle observation structure. Through optimized structural design and functional configuration, it solves the technical problems of existing equipment in jewelry testing, such as limited observation angles, limited image quality, insufficient portability, and poor adaptability to high-reflectivity materials. This invention adopts a modular design, facilitating rapid assembly and disassembly, while also possessing precise adjustment capabilities. It can adapt to the testing needs of jewelry of different shapes and sizes, effectively reducing reflective interference and improving testing accuracy.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a jewelry testing instrument with a multi-angle observation structure, including a main frame, a support platform for placing the jewelry to be tested, an optical acquisition unit for capturing details of the jewelry surface, an angle adjustment component for adjusting the position of the optical acquisition unit, and a shock-absorbing support unit for reducing vibration during equipment operation. The optical acquisition unit includes multiple optical lenses, which are arranged in an alternating pattern. Each optical lens is mounted on the acquisition bracket via an independent rotating mechanism, and the axis of the optical lens forms a certain tilt angle with respect to the plane of the acquisition bracket. The support platform is provided with a clamping device for fixing the jewelry. The clamping device is connected to the support platform via a slide rail that extends along the edge of the support platform. The bottom of the main frame is provided with a shock-absorbing support unit.

[0006] The angle adjustment assembly includes a lateral adjustment module and a longitudinal adjustment module. The lateral adjustment module includes two parallel guide rails with a lead screw between them. The lead screw is connected to the guide rails via a bearing, and one end of the lead screw is connected to the output shaft of a drive motor. A nut seat is provided on the lead screw and is fixedly connected to one end of the longitudinal adjustment module. The longitudinal adjustment module includes a telescopic rod and a locking component. One end of the telescopic rod is fixedly connected to the acquisition bracket of the optical acquisition unit, and the other end is connected to the nut seat. The locking component is used to fix the length of the telescopic rod.

[0007] The telescopic rod includes an inner rod and an outer tube. The inner rod is inserted into the outer tube, and the inner rod and the outer tube are locked together by a positioning pin. The positioning pin passes through a positioning hole on the inner rod and the outer tube to achieve fixation. The surfaces of the inner rod and the outer tube are provided with scale marks to indicate the telescopic length of the telescopic rod.

[0008] The clamping device includes a fixed clamping plate and a movable clamping plate. The fixed clamping plate is fixedly connected to the slide rail, and the movable clamping plate is connected to the fixed clamping plate through a screw. One end of the screw is equipped with a handwheel. The handwheel rotates to drive the screw to rotate, thereby pushing the movable clamping plate to move along the slide rail to clamp or release the jewelry. Flexible pads are provided on the inner sides of both the fixed clamping plate and the movable clamping plate. The flexible pads are made of anti-slip material to protect the surface of the jewelry and prevent it from sliding.

[0009] The rotating mechanism of the optical lens includes a rotating disk and a limiting block. The rotating disk is connected to the acquisition bracket via a rotating shaft. A limiting block is provided at one end of the rotating shaft. The limiting block cooperates with the arc groove on the acquisition bracket to limit the rotation angle of the rotating disk. A pointer is provided on the surface of the rotating disk, and an angle scale is provided on the acquisition bracket to indicate the rotation angle of the rotating disk.

[0010] The shock-absorbing support unit includes an upper support plate, a lower support plate, and an elastic buffer. The elastic buffer is disposed between the upper and lower support plates and has multiple cavities filled with viscous damping material. The upper and lower support plates are fixedly connected by a connecting column. The two ends of the connecting column are threaded to the upper and lower support plates, respectively. A spring is disposed in the middle of the connecting column and is sleeved on the connecting column to absorb vibration energy.

[0011] The outer surface of the elastic buffer body is provided with multiple protrusions, which are evenly distributed along the circumference of the elastic buffer body. The top of the protrusion contacts the upper support plate, and the bottom of the protrusion contacts the lower support plate. The interior of the protrusion is a hollow structure filled with gas to further enhance the shock absorption effect.

[0012] The drive motor is a stepper motor, and the control terminal of the stepper motor is connected to the controller. The controller controls the rotation direction and speed of the stepper motor by receiving external signals. The controller is located on one side of the main frame, and the controller panel is equipped with a display screen and operation buttons for displaying current parameters and inputting control commands.

[0013] The bottom of the acquisition bracket is provided with a sliding groove, which cooperates with the slide rail on the guide plate. The acquisition bracket moves along the slide rail through the sliding groove. Ball bearings are provided on both sides of the sliding groove. The ball bearings contact the slide rail to reduce friction and improve the smoothness of movement.

[0014] The beneficial effects of this utility model are:

[0015] This invention, through the design of an angle adjustment component, achieves precise adjustment of the optical acquisition unit in both the horizontal and vertical directions, thereby meeting the needs of comprehensive observation of jewelry of different shapes and sizes. The staggered arrangement and tilt setting of the optical lenses, combined with the application of a rotating mechanism, can capture detailed features of the jewelry surface from multiple angles, effectively avoiding the blind spots caused by the single observation angle of traditional equipment. The flexible pad design of the clamping device not only protects the jewelry surface from damage but also ensures the stability of the jewelry during the inspection process. The shock-absorbing support unit, through the synergistic action of the elastic buffer and springs, significantly reduces vibration during equipment operation, ensuring the accuracy of the inspection results. Furthermore, this invention has a compact overall structure, making it easy to carry and use on-site, and is particularly suitable for the combined needs of portability and high-precision imaging in the field of jewelry inspection. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention, showing the overall structure of the jewelry testing instrument, including the main frame, the support platform, the optical acquisition unit, and the shock absorption support unit.

[0017] Figure 2 This is a schematic diagram of the angle adjustment component in this utility model, which shows in detail the cooperation relationship between the horizontal adjustment module and the vertical adjustment module and their connection with the optical acquisition unit.

[0018] Figure 3 This is a partial enlarged view of the clamping device in this utility model, which focuses on the arrangement of the fixed clamping plate, the movable clamping plate, and the flexible gasket.

[0019] Figure 4 This is a schematic diagram of the optical lens rotation mechanism in this utility model, showing the details of the cooperation between the rotating disk, the limiting block, and the acquisition bracket.

[0020] Figure 5 This is a cross-sectional view of the shock-absorbing support unit in this utility model, revealing the internal structure of the elastic buffer, spring and connecting column.

[0021] The attached figures are labeled as follows:

[0022] 1. Main frame; 2. Bearing platform; 3. Optical acquisition unit; 4. Shock-absorbing support unit; 5. Angle adjustment component; 6. Clamping device; 7. Rotation mechanism; 8. Lateral adjustment module; 9. Longitudinal adjustment module; 10. Elastic buffer. Detailed Implementation

[0023] This utility model provides a jewelry testing instrument with a multi-angle observation structure, the overall structure of which is as follows: Figure 1 As shown, the invention includes a main frame 1, a support platform 2, an optical acquisition unit 3, a shock-absorbing support unit 4, an angle adjustment assembly 5, and a clamping device 6. The specific embodiments of this invention will be described in detail below with reference to the accompanying drawings.

[0024] The main frame 1 serves as the primary support structure for the entire jewelry testing instrument. Made of high-strength aluminum alloy, it boasts high rigidity and stability. The support platform 2, mounted at the upper center of the main frame 1, is used to hold the jewelry to be tested. The surface of the support platform 2 is finely polished to minimize the impact of external light reflection on the testing results. Slide rails are provided along the edges of the support platform 2, extending along its length, to cooperate with the clamping device 6 in securing the jewelry. The clamping device 6 includes a fixed clamping plate and a movable clamping plate. The fixed clamping plate is bolted to one end of the slide rail, while the movable clamping plate is connected to the fixed clamping plate via a screw. A handwheel is located at one end of the screw; rotating the handwheel drives the screw, thereby moving the movable clamping plate along the slide rail to clamp or release the jewelry. Flexible gaskets, made of silicone with an anti-slip texture, are provided on the inner sides of both the fixed and movable clamping plates to effectively protect the jewelry surface and prevent slippage during testing.

[0025] The optical acquisition unit 3 is mounted on top of the main frame 1 to capture detailed features on the jewelry surface. The optical acquisition unit 3 includes multiple optical lenses arranged in a staggered pattern, each lens mounted on the acquisition bracket via an independent rotating mechanism 7. The specific structure of the rotating mechanism 7 is as follows... Figure 4 As shown, the system includes a rotating disk and a limiting block. The rotating disk is connected to the acquisition bracket via a rotating shaft. A limiting block is located at one end of the shaft, engaging with an arc-shaped groove on the acquisition bracket to limit the rotation range of the rotating disk. A pointer is mounted on the surface of the rotating disk, and an angle scale is provided on the acquisition bracket. The pointer and scale work together to precisely indicate the rotation angle of the rotating disk. The axis of each optical lens forms a certain tilt angle relative to the plane of the acquisition bracket, ranging from 15° to 45°, to ensure that detailed features of the jewelry surface can be captured from different angles. A sliding groove is located at the bottom of the acquisition bracket, engaging with a slide rail on the guide plate in the angle adjustment assembly 5. The acquisition bracket moves along the slide rail via the sliding groove. Ball bearings are located on both sides of the sliding groove, contacting the slide rail to reduce friction and improve the smoothness of movement.

[0026] Angle adjustment component 5 includes a lateral adjustment module 8 and a longitudinal adjustment module 9, the specific structure of which is as follows: Figure 2 As shown. The lateral adjustment module 8 includes two parallel guide rails, with a lead screw between them, connected to the guide rails via bearings. One end of the lead screw is connected to the output shaft of a stepper motor, whose control end is connected to a controller. The controller controls the rotation direction and speed of the stepper motor by receiving external signals. A nut seat is provided on the lead screw, and the nut seat is fixedly connected to one end of the longitudinal adjustment module 9. The longitudinal adjustment module 9 includes a telescopic rod and a locking component. One end of the telescopic rod is fixedly connected to the acquisition bracket of the optical acquisition unit 3, and the other end is connected to the nut seat. The telescopic rod includes an inner rod and an outer tube. The inner rod is inserted into the outer tube, and the inner rod and outer tube are locked together by a positioning pin, which passes through positioning holes on the inner rod and outer tube for fixation. Scale markings are provided on the surfaces of both the inner rod and the outer tube to indicate the telescopic length. The locking component is used to fix the length of the telescopic rod, ensuring that the optical acquisition unit 3 remains stable after adjustment.

[0027] The shock-absorbing support unit 4 is installed at the bottom of the main frame 1, and its specific structure is as follows: Figure 5As shown, the system includes an upper support plate, a lower support plate, and an elastic buffer 10. The elastic buffer 10 is positioned between the upper and lower support plates. The interior of the elastic buffer 10 contains multiple cavities filled with a viscous damping material to absorb vibration energy. The outer surface of the elastic buffer 10 has multiple protrusions evenly distributed along its circumference. The tops of the protrusions contact the upper support plate, and the bottoms contact the lower support plate. The interiors of the protrusions are hollow and filled with gas to further enhance the damping effect. The upper and lower support plates are fixedly connected by a connecting column. The two ends of the connecting column are threaded to the upper and lower support plates, respectively. A spring is located in the middle of the connecting column and is sleeved on it to absorb vibration energy and improve overall stability.

[0028] In practical use, the jewelry to be tested is first placed on the support platform 2 and fixed by the clamping device 6. The operator rotates the handwheel to move the movable clamping plate along the slide rail until the flexible pad between the fixed clamping plate and the movable clamping plate is in close contact with the surface of the jewelry. At this time, the anti-slip texture of the flexible pad can effectively prevent the jewelry from sliding and protect the surface of the jewelry from damage. Subsequently, the operator inputs a command through the controller, which controls the rotation direction and speed of the stepper motor according to the command, thereby driving the lead screw to rotate. The rotation of the lead screw drives the nut seat to move along the guide rail plate, thereby realizing the position adjustment of the optical acquisition unit 3 in the lateral direction. When it is necessary to adjust the position of the optical acquisition unit 3 in the longitudinal direction, the operator can achieve this by adjusting the length of the telescopic rod. The inner rod and outer tube of the telescopic rod are locked together by a positioning pin. The operator can accurately adjust the length of the telescopic rod according to the scale marks and fix the position of the telescopic rod by the locking device.

[0029] After adjusting the position of the optical acquisition unit 3, the operator can adjust the angle of each optical lens using the rotating mechanism 7. The rotating disk of the rotating mechanism 7 is connected to the acquisition bracket via a rotating shaft. The operator manually rotates the disk to create the desired tilt angle between the axis of the optical lens and the plane of the acquisition bracket. The rotation range of the disk is limited by a limiting block that engages with an arc-shaped groove on the acquisition bracket. The operator can precisely indicate the rotation angle of the disk using a pointer that coordinates with the angle scale on the acquisition bracket. Once adjusted, the optical acquisition unit 3 can capture detailed features of the jewelry surface from multiple angles.

[0030] During the testing process, the vibration damping support unit 4 significantly reduces the vibration of the equipment during operation through the synergistic effect of the elastic buffer 10 and the spring. The viscous damping material inside the elastic buffer 10 and the external protruding hollow structure work together to absorb vibration energy, ensuring that the optical acquisition unit 3 remains stable during the testing process. In addition, the high-strength aluminum alloy material of the main frame 1 and the ball bearing design in the angle adjustment component 5 further improve the overall stability of the equipment and ensure the accuracy of the test results.

[0031] The overall structure of this utility model is compact, making it easy to carry and use on-site. As can be seen from the above embodiments, this utility model achieves rapid assembly and disassembly through modular design, while also possessing precise adjustment capabilities. It can adapt to the testing needs of jewelry of different shapes and sizes, effectively reducing reflective interference and improving testing accuracy.

[0032] To enable those skilled in the art to fully understand and implement this utility model, the following further explains the operating principle and implementation steps of this utility model in conjunction with specific application scenarios.

[0033] First, before using the jewelry testing instrument, the operator must place the jewelry to be tested on the support platform 2. The surface of the support platform 2 is finely polished to reduce interference from external light reflection and ensure the optical stability of the testing environment. Then, the operator rotates the handwheel to drive the screw in the clamping device 6, causing the movable clamping plate to move along the slide rail. When the flexible pad contacts the jewelry surface, its anti-slip texture effectively prevents the jewelry from slipping during testing, while the silicone flexible pad avoids damage to the jewelry surface. This process achieves precise positioning through manual adjustment and adapts to the fixing needs of jewelry of different sizes and shapes.

[0034] Next, the operator inputs a command through the controller to start the stepper motor in the lateral adjustment module 8. The stepper motor adjusts its rotation direction and speed according to the signal from the controller, thereby driving the lead screw to rotate. The rotation of the lead screw causes the nut seat to move along the guide rail, allowing the optical acquisition unit 3 to be positioned laterally. During this process, the cooperation between the ball bearings and the slide rail significantly reduces friction and improves the smoothness of movement. When it is necessary to adjust the position of the optical acquisition unit 3 in the longitudinal direction, the operator can achieve this through the relative movement between the inner rod and the outer tube of the telescopic rod. The scale markings on the inner rod and the outer tube provide the operator with precise length indications, while the positioning pin is used to lock the final position of the telescopic rod, ensuring that the optical acquisition unit 3 remains stable after adjustment.

[0035] After position adjustment, the operator can manually adjust the angle of each optical lens. Using the rotating disk in rotating mechanism 7, the operator tilts the axis of the optical lens relative to the plane of the acquisition bracket to the desired angle. The rotation range of the rotating disk is limited by the cooperation of the limiting block and the arc groove, while the cooperation of the pointer and the angle scale allows the operator to precisely control the rotation angle. The axis tilt angle of each optical lens ranges from 15° to 45°. This design ensures that detailed features of the jewelry surface are captured from multiple angles, effectively avoiding the blind spot problem caused by the single observation angle of traditional equipment.

[0036] During the testing process, the vibration damping support unit 4 significantly reduces the vibration of the equipment during operation through the synergistic effect of the elastic buffer 10 and the spring. The viscous damping material inside the elastic buffer 10 absorbs vibration energy, while the externally protruding hollow structure further enhances the vibration damping effect. The spring in the middle of the connecting column absorbs the remaining vibration through elastic deformation, ensuring that the optical acquisition unit 3 remains stable during the testing process. The main frame 1 is made of high-strength aluminum alloy, and its rigidity and stability further improve the overall vibration resistance of the equipment, thereby ensuring the accuracy of the test results.

[0037] Finally, multiple optical lenses in optical acquisition unit 3, arranged in an alternating pattern and with independent tilt angles, capture detailed features of the jewelry surface from different angles. The imaging data from these lenses is then integrated by subsequent processing software to generate a comprehensive image of the jewelry surface. In this way, this invention not only achieves omnidirectional coverage of complex cut surfaces but also effectively reduces reflective interference from high-reflectivity materials, thus improving image clarity.

[0038] In summary, this invention, through its modular design and precise adjustment capabilities, meets the comprehensive needs of the jewelry testing field for multi-angle observation, portability, and high-precision imaging. The coordinated operation of its components ensures the efficiency and accuracy of the testing process, providing reliable technical support for the assessment of jewelry quality and value.

Claims

1. A jewelry testing instrument with a multi-angle observation structure, characterized in that: The device includes a main frame (1), on which a support platform (2) for placing the jewelry to be tested, an optical acquisition unit (3) for capturing details of the jewelry surface, an angle adjustment component (5) for adjusting the position of the optical acquisition unit (3), and a shock-absorbing support unit (4) for reducing vibration during device operation are provided; the optical acquisition unit (3) includes multiple optical lenses, which are arranged in an alternating manner between adjacent optical lenses, and each optical lens is mounted on the acquisition bracket through an independent rotating mechanism (7), and the axis of the optical lens forms a certain tilt angle with respect to the plane of the acquisition bracket; the support platform (2) is provided with a clamping device (6) for fixing the jewelry, and the clamping device (6) is connected to the support platform (2) through a slide rail, which extends along the edge direction of the support platform (2); the bottom of the main frame (1) is provided with a shock-absorbing support unit (4).

2. The jewelry testing instrument with a multi-angle observation structure according to claim 1, characterized in that: The angle adjustment component (5) includes a lateral adjustment module (8) and a longitudinal adjustment module (9). The lateral adjustment module (8) includes two parallel guide rails with a lead screw between them. The lead screw is connected to the guide rails via a bearing. One end of the lead screw is connected to the output shaft of the drive motor. A nut seat is provided on the lead screw and is fixedly connected to one end of the longitudinal adjustment module (9). The longitudinal adjustment module (9) includes a telescopic rod and a locking component. One end of the telescopic rod is fixedly connected to the acquisition bracket of the optical acquisition unit (3), and the other end is connected to the nut seat. The locking component is used to fix the length of the telescopic rod.

3. A jewelry testing instrument with a multi-angle observation structure according to claim 2, characterized in that: The telescopic rod includes an inner rod and an outer tube. The inner rod is inserted into the outer tube, and the inner rod and the outer tube are locked together by a positioning pin. The positioning pin passes through the positioning hole on the inner rod and the outer tube to achieve fixation. The surfaces of the inner rod and the outer tube are provided with scale marks.

4. A jewelry testing instrument with a multi-angle observation structure according to claim 1, characterized in that: The clamping device (6) includes a fixed clamping plate and a movable clamping plate. The fixed clamping plate is fixedly connected to the slide rail, and the movable clamping plate is connected to the fixed clamping plate through a screw. A handwheel is provided at one end of the screw. The handwheel rotates to drive the screw to rotate, thereby pushing the movable clamping plate to move along the slide rail. Flexible pads are provided on the inner sides of both the fixed clamping plate and the movable clamping plate. The flexible pads are made of anti-slip material.

5. A jewelry testing instrument with a multi-angle observation structure according to claim 1, characterized in that: The rotating mechanism (7) of the optical lens includes a rotating disk and a limiting block. The rotating disk is connected to the acquisition bracket through a rotating shaft. A limiting block is provided at one end of the rotating shaft. The limiting block cooperates with the arc groove on the acquisition bracket. A pointer is provided on the surface of the rotating disk, and an angle scale is provided on the acquisition bracket.

6. A jewelry testing instrument with a multi-angle observation structure according to claim 1, characterized in that: The shock-absorbing support unit (4) includes an upper support plate, a lower support plate, and an elastic buffer (10). The elastic buffer (10) is disposed between the upper support plate and the lower support plate. The interior of the elastic buffer (10) has multiple cavities filled with viscous damping material. The upper support plate and the lower support plate are fixedly connected by a connecting column. The two ends of the connecting column are threaded to the upper support plate and the lower support plate, respectively. A spring is provided in the middle of the connecting column.

7. A jewelry testing instrument with a multi-angle observation structure according to claim 6, characterized in that: The outer surface of the elastic buffer (10) is provided with a plurality of protrusions, which are evenly distributed along the circumference of the elastic buffer (10). The top of the protrusion contacts the upper support plate, and the bottom of the protrusion contacts the lower support plate. The interior of the protrusion is a hollow structure, which is filled with gas.

8. A jewelry testing instrument with a multi-angle observation structure according to claim 2, characterized in that: The drive motor is a stepper motor. The control terminal of the stepper motor is connected to the controller. The controller controls the rotation direction and speed of the stepper motor by receiving external signals. The controller is set on one side of the main frame (1). The controller panel is equipped with a display screen and operation buttons.

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