Portable clamping mechanism for jewelry detection

Abstract

The utility model relates to the technical field of jewelry detection, in particular to a portable jewelry detection clamping mechanism which comprises a clamping assembly, an adjusting assembly and a supporting assembly. The clamping assembly avoids damage to the surface of jewelry through the design of an elastic hinge and a flexible gasket, the adjusting assembly achieves accurate control over the distance between clamping jaws through a sliding block and scale marks, the flexibility of the supporting assembly is enhanced through a base and an angle adjusting mechanism, and a lighting module is additionally arranged to improve the detection definition. The jewelry detection system can provide efficient, accurate and diversified jewelry detection, and has portability and practicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of jewelry testing equipment, specifically a portable jewelry testing clamping mechanism. Background Technology

[0002] With the development of jewelry testing technology, various clamping devices are increasingly widely used in jewelry testing. However, existing clamping devices still have some shortcomings in practical use, especially in terms of portability and multifunctionality, failing to fully meet market demands. For example, current jewelry clamping devices on the market are usually large in size and complex to operate, making it difficult to achieve rapid adjustment and stable clamping when faced with jewelry of different sizes and shapes. This leads to problems such as low testing efficiency and inconvenience in operation.

[0003] A search revealed a clamping and fixing fixture for jewelry inspection, with publication number CN115194672B and publication date July 2, 2024. This design uses a telescopic flexible tube to compress and buffer the conductive tube, and a clamping mechanism to hold jewelry of different sizes against the surface. While this structure allows for multi-angle inspection of jewelry, its overall structure is relatively complex and requires a micro-motor drive, resulting in a large device size that is inconvenient to carry and use on-site. Furthermore, this design may suffer from insufficient stability when clamping small or irregularly shaped jewelry, making it difficult to fully adapt to diverse inspection needs.

[0004] A search revealed a jewelry identification clamping device with adjustable light angle, publication number CN114619389B, published on June 16, 2023. This design achieves alternating clamping of jewelry through upper and lower clamping mechanisms and movable clamping components, meeting the examiner's requirements for light angle. However, this design is primarily aimed at jewelry identification scenarios, with a limited clamping range, making it unsuitable for various types of jewelry testing tasks. Furthermore, its mechanical clamping method is cumbersome to operate and may damage the jewelry surface during clamping, affecting the accuracy of the test results.

[0005] The aforementioned problems indicate that traditional jewelry clamping devices currently on the market have significant shortcomings in terms of portability, versatility, and stability, making it difficult to effectively meet the new demands of modern jewelry testing for efficiency, accuracy, and versatility. Therefore, this invention provides a portable jewelry testing clamping mechanism to overcome the deficiencies of existing technologies and offer a more intelligent, efficient, and adaptable solution for changing environments. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a portable clamping mechanism for jewelry testing. By simplifying the structural design, optimizing the operation method and enhancing the applicability, it solves the defects of traditional clamping devices in terms of portability, multifunctionality and stability, while avoiding damage to the surface of jewelry and meeting the needs of efficient, accurate and diverse testing.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a portable jewelry inspection clamping mechanism, comprising a clamping assembly, an adjusting assembly, and a supporting assembly. The clamping assembly includes two symmetrically arranged grippers connected by an elastic hinge. The two ends of the elastic hinge are fixed to the inner sides of the two grippers, and a torsion spring is provided in the middle of the elastic hinge. The outer side of each gripper has anti-slip textures, and the inner side has a flexible pad made of a polymer material with a thickness of 1.0-3.0 mm. The surface of the flexible pad has a plurality of microporous structures. An extension rod is fixed to the tail end of each gripper, and the end of the extension rod has a threaded section. The two extension rods are connected to the adjusting assembly through the threaded section.

[0008] The adjusting assembly includes a hollow adjusting rod with threaded holes at both ends. The threaded sections of two extension rods are screwed into these holes. A through groove is located in the middle of the adjusting rod, and a slider is installed within the groove. A rotary knob is fixed to the top of the slider, and the bottom surface of the knob is fixed to the top surface of the slider with screws. A locating pin is fixed to the bottom of the slider, with its end contacting the inner wall of the adjusting rod. By rotating the rotary knob, the slider moves along the groove, causing the two extension rods to move closer or further apart, thus opening and closing the grippers.

[0009] The support assembly includes a base with a circular groove on its top surface. A bearing is fixed at the center of the groove, and the bottom of an adjusting rod is inserted into the bearing. The bottom end of the adjusting rod is fixedly connected to the inner ring of the bearing, allowing the adjusting rod to rotate freely on the base. The bottom surface of the base has four evenly distributed feet, each with an anti-slip pad at its bottom end. The anti-slip pad is made of silicone material with a thickness of 5.0-8.0 mm.

[0010] As a preferred embodiment of this invention, the inner side of the gripper is further provided with an auxiliary gripping mechanism, which includes multiple micro-suction cups evenly distributed on the surface of the flexible pad. Each micro-suction cup has a diameter of 2.0-5.0 mm and a height of 1.0-2.0 mm. The micro-suction cups contact the jewelry surface through vacuum adsorption, further enhancing the stability of the gripping.

[0011] As a preferred embodiment of this invention, the outer wall of the adjusting rod is provided with a scale mark, which is distributed along the length of the adjusting rod to indicate the distance between the two grippers. The smallest scale division is 0.1mm, which facilitates precise control of the clamping force and range.

[0012] In a preferred embodiment of this invention, an illumination module is provided on the side of the base. The illumination module includes an LED bead and a lens. The LED bead is fixed to the side of the base, and the lens is fixedly connected to the side of the base via a bracket. The central axis of the lens is perpendicular to the light-emitting surface of the LED bead. The lens has a focal length of 5.0-10.0 cm, which enables it to focus the light emitted by the LED bead onto the clamping area, improving the light intensity and clarity during detection.

[0013] As a preferred embodiment of this invention, the top surface of the base is further provided with an angle adjustment mechanism. The angle adjustment mechanism includes an annular track and a sliding block. The annular track is fixed to the top surface of the base, and the sliding block is mounted on the annular track. The top of the sliding block is connected to the bottom of the adjusting rod via a universal joint. By moving the sliding block on the annular track, the adjusting rod can rotate around the central axis of the base, thereby adjusting the angle of the clamping assembly.

[0014] In a preferred embodiment of this invention, the base has a storage cavity inside, with the opening of the storage cavity located on one side of the base. A detachable cover is provided at the opening, and the cover is fixedly connected to the base via a snap-fit. The storage cavity is used to store small tools or spare parts, improving the portability and practicality of the device.

[0015] In a preferred embodiment of this invention, the tail end of the gripper is provided with a locking mechanism. The locking mechanism includes a locking bolt and a locking block. The locking bolt passes through the tail end of the extension rod and is threadedly connected to the locking block. A rubber gasket with a thickness of 1.0-2.0 mm is provided on the inner side of the locking block. By tightening the locking bolt, the locking block and the extension rod are in close contact, thereby fixing the position of the gripper and preventing loosening during the testing process.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The portable jewelry inspection clamping mechanism of this utility model, through the design of elastic hinge and flexible pad, on the one hand, uses the torsion spring of the elastic hinge to provide clamping force, avoiding damage to the jewelry surface caused by traditional mechanical clamping methods; on the other hand, the microporous structure of the flexible pad increases the friction with the jewelry surface, while the micro suction cup further enhances the clamping stability through the vacuum adsorption principle, making it suitable for jewelry inspection tasks of different shapes and sizes.

[0018] 2. The portable jewelry inspection clamping mechanism of this utility model achieves precise control of the clamping distance through the cooperation of the adjusting rod and the slider. The setting of scale marks facilitates the operator to quickly adjust the clamping range, thereby improving the inspection efficiency and accuracy.

[0019] 3. The portable jewelry inspection clamping mechanism of this utility model, through the design of the base and the angle adjustment mechanism, allows the adjustment rod to rotate freely on the base to meet the needs of multi-angle inspection; on the other hand, the movement of the sliding block on the circular track enables the clamping assembly to rotate around the central axis of the base, further enhancing the flexibility and applicability of the device.

[0020] 4. The portable jewelry inspection clamping mechanism of this utility model, through the setting of the lighting module, focuses the light emitted by the LED beads onto the clamping area through the lens, which significantly improves the light intensity and clarity during inspection, making it easier to observe the detailed features of the jewelry surface.

[0021] 5. The portable jewelry inspection clamping mechanism of this utility model, through the design of the storage cavity, facilitates the storage of small tools or spare parts, reduces the need for carrying an additional toolbox, and further enhances the portability and practicality of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the elastic hinge in this utility model.

[0024] Figure 3 This is a schematic diagram of the base structure in this utility model.

[0025] Figure 4 In this utility model Figure 3 Another structural diagram from another angle.

[0026] Figure 5 In this utility model Figure 3 Enlarged view of point A.

[0027] The attached diagram is labeled as follows: 1. Gripper; 2. Elastic hinge; 3. Flexible pad; 4. Miniature suction cup; 5. Extension rod; 6. Adjusting rod; 7. Slider; 8. Rotary knob; 9. Base; 10. Bearing; 11. Support leg; 12. LED bead; 13. Lens; 14. Circular track; 15. Sliding block; 16. Storage cavity; 17. Cover plate. Detailed Implementation

[0028] This utility model provides a portable jewelry inspection clamping mechanism, whose structure includes a clamping assembly, an adjustment assembly, and a support assembly. (See attached diagram.) Figure 1 To be continued Figure 5 The structural diagram and related details shown below will be used to describe the specific implementation of this utility model.

[0029] The clamping assembly is the core of the entire device, used for direct contact and securing of the jewelry. The clamping assembly includes two symmetrically arranged grippers 1, connected by a flexible hinge 2. The two ends of the flexible hinge 2 are fixed to the inner sides of the two grippers 1, and a torsion spring is located in the middle to achieve automatic opening and closing of the grippers 1. The outer sides of the grippers 1 have anti-slip textures, facilitating manual adjustment of the gripper position by the operator. The inner side of the grippers 1 has a flexible pad 3, made of a polymer material with a thickness of 1.0-3.0 mm and a surface with several microporous structures. (See attached...) Figure 2 As can be seen, the microporous structure of the flexible pad 3 increases the friction with the jewelry surface, thus preventing the jewelry from slipping during clamping. Furthermore, an auxiliary clamping mechanism is provided on the inner side of the gripper 1. This mechanism includes multiple micro-suction cups 4, which are evenly distributed on the surface of the flexible pad 3. Each micro-suction cup 4 has a diameter of 2.0-5.0 mm and a height of 1.0-2.0 mm. The micro-suction cups 4 can contact the jewelry surface through vacuum adsorption, further enhancing the stability of the clamping.

[0030] Each gripper 1 has an extension rod 5 fixed to its tail end. The end of each extension rod 5 has a threaded section for connection to the adjustment assembly. The adjustment assembly includes a hollow adjustment rod 6, with threaded holes at both ends. The threaded sections of the two extension rods 5 are screwed into the threaded holes at both ends of the adjustment rod 6. (See attached diagram.) Figure 3 As can be seen, the adjusting rod 6 has a through groove in the middle, and a slider 7 is installed in the groove. A rotary knob 8 is fixed to the top of the slider 7, and the bottom surface of the rotary knob 8 is fixed to the top surface of the slider 7 by screws. A positioning pin is fixed to the bottom of the slider 7, and the end of the positioning pin contacts the inner wall of the adjusting rod 6. By rotating the rotary knob 8, the slider 7 moves along the groove, thereby driving the two extension rods 5 to move closer or further apart, realizing the opening and closing action of the gripper 1. A scale mark is provided on the outer wall of the adjusting rod 6, and the scale mark is distributed along the length direction of the adjusting rod 6 to indicate the distance between the two grippers 1. The smallest scale mark is 0.1mm, which can help the operator to accurately control the clamping range.

[0031] The support assembly includes a base 9, with a circular groove on its top surface. A bearing 10 is fixed at the center of the circular groove. The bottom of an adjusting rod 6 is inserted into the bearing 10, and the bottom end of the adjusting rod 6 is fixedly connected to the inner ring of the bearing 10, allowing the adjusting rod 6 to rotate freely on the base 9. (See attached diagram.) Figure 4 As can be seen, the top surface of the base 9 is also equipped with an angle adjustment mechanism, which includes an annular track 14 and a sliding block 15. The annular track 14 is fixed to the top surface of the base 9, and the sliding block 15 is mounted on the annular track 14. The top of the sliding block 15 is connected to the bottom of the adjusting rod 6 via a universal joint. By moving the sliding block 15 on the annular track 14, the adjusting rod 6 can rotate around the central axis of the base 9, thereby adjusting the angle of the clamping assembly. The bottom surface of the base 9 is provided with four evenly distributed support feet 11. Each support foot 11 has an anti-slip pad installed at its bottom end. The anti-slip pad is made of silicone material with a thickness of 5.0-8.0 mm to improve the stability of the device when placed.

[0032] A lighting module is provided on the side of the base 9, combined with the attached... Figure 5 As can be seen, the lighting module includes an LED bead 12 and a lens 13. The LED bead 12 is fixed to the side of the base 9, and the lens 13 is fixedly connected to the side of the base 9 via a bracket. The central axis of the lens 13 is perpendicular to the light-emitting surface of the LED bead 12. The focal length of the lens 13 is 5.0-10.0 cm, which can focus the light emitted by the LED bead 12 onto the clamping area, thereby improving the light intensity and clarity during detection. The base 9 has a storage cavity 16 inside, with its opening located on one side of the base 9. A removable cover 17 is provided at the opening, and the cover 17 is fixedly connected to the base 9 via a snap-fit. As can be seen from the attached drawings, the storage cavity 16 is used to store small tools or spare parts, improving the portability and practicality of the device.

[0033] The tail end of the gripper 1 is equipped with a locking mechanism, which includes a locking bolt and a locking block. The locking bolt passes through the tail end of the extension rod 5 and is threadedly connected to the locking block. The inner side of the locking block is provided with a rubber gasket, the thickness of which is 1.0-2.0mm. By tightening the locking bolt, the locking block and the extension rod 5 are in tight contact, thereby fixing the position of the gripper 1 and preventing loosening during the inspection process.

[0034] In actual use, the operator first places the jewelry to be inspected between the jaws 1, and adjusts the position of the slider 7 by rotating the rotary knob 8, gradually bringing the two jaws 1 closer together until the flexible pad 3 and the micro suction cup 4 contact the jewelry surface. At this point, the microporous structure of the flexible pad 3 and the adsorption effect of the micro suction cup 4 together ensure that the jewelry is firmly clamped. If it is necessary to adjust the spacing of the jaws 1, the operator can make precise control by observing the scale marks on the adjustment rod 6. When it is necessary to change the clamping angle, the operator can adjust the rotation angle of the adjustment rod 6 by moving the slider 15 on the annular track 14, thereby changing the direction of the clamping components. During the inspection, the light emitted by the LED beads 12 is focused by the lens 13 and illuminates the clamping area, significantly improving the light intensity and clarity, making it easier for the operator to observe the detailed features of the jewelry surface. After the inspection is completed, the operator can store small tools or spare parts in the storage cavity 16 for easy carrying and subsequent use.

[0035] To enable those skilled in the art to better understand and implement this utility model, the following supplementary explanation of the implementation principle of this utility model is provided in conjunction with specific application scenarios.

[0036] In the actual operation of jewelry testing, the jewelry to be tested is first placed between two grippers 1. The operator rotates the rotary knob 8 in the adjustment assembly, causing the slider 7 to move along the groove in the middle of the adjustment rod 6. The displacement of the slider 7 causes the extension rod 5 to move closer together, thereby pushing the two grippers 1 to gradually close. During this process, the torsion spring of the elastic hinge 2 provides the initial clamping force and contacts the jewelry surface through the flexible pad 3. The microporous structure on the surface of the flexible pad 3 increases the friction, preventing the jewelry from slipping during clamping. At the same time, the micro suction cup 4 on the inside of the grippers 1 further enhances the clamping stability through the vacuum adsorption principle, ensuring that the jewelry is firmly fixed without damage.

[0037] If the spacing between the grippers 1 needs to be adjusted to accommodate jewelry of different sizes, the operator can precisely control this by observing the scale markings on the adjusting rod 6. The smallest unit of the scale markings is 0.1mm, which meets the requirements of high-precision testing. Once the appropriate clamping range is determined, the position of the grippers 1 is fixed by the locking mechanism. The locking bolt passes through the extension rod 5 and connects to the locking block. The rubber gasket on the inner side of the locking block is in close contact with the extension rod 5 to prevent the grippers 1 from loosening during testing.

[0038] During the testing process, if the clamping angle needs to be changed, the operator can adjust the direction of the clamping assembly by moving the sliding block 15 on the annular track 14. The top of the sliding block 15 is connected to the bottom of the adjusting rod 6 via a universal joint, so the adjusting rod 6 can rotate freely around the central axis of the base 9. This design allows the clamping assembly to be flexibly adjusted within multiple angle ranges, thereby meeting the needs of multi-angle testing. The four feet 11 on the bottom surface of the base 9 enhance the stability of the device with silicone anti-slip pads, ensuring that the device will not wobble when adjusting the angle.

[0039] Meanwhile, the light emitted by the LED beads 12 in the lighting module is focused by the lens 13 and illuminates the clamping area. The focal length of the lens 13 is 5.0-10.0 cm, which concentrates the light on the surface of the jewelry, significantly improving the light intensity and clarity. This design makes it easier for operators to observe the detailed features of the jewelry surface, improving the accuracy and efficiency of the inspection.

[0040] After testing is completed, operators can store small tools or spare parts in the storage compartment 16. The storage compartment 16 is located inside the base 9, and its opening is equipped with a removable cover 17, which is fixedly connected to the base 9 by a snap-fit. The design of the storage compartment 16 not only improves the portability of the device but also reduces the need to carry an additional toolbox, further enhancing its practicality.

[0041] In summary, this invention achieves stable clamping, precise adjustment, and multi-angle inspection of jewelry through the synergistic action of the clamping, adjusting, and supporting components. The design of each component is based on the principles of simplifying the operation process, improving inspection efficiency, and enhancing applicability, fully meeting the requirements of modern jewelry inspection for high efficiency, accuracy, and versatility. The combination of the above steps and principles ensures that the technical solution of this invention can be smoothly implemented by those skilled in the art and achieve the expected results.

Claims

1. A portable jewelry inspection clamping mechanism, characterized in that: The system includes a clamping assembly, an adjusting assembly, and a supporting assembly. The clamping assembly includes two symmetrically arranged jaws (1) connected by an elastic hinge (2). The two ends of the elastic hinge (2) are fixed to the inner sides of the two jaws (1), and a torsion spring is provided in the middle of the elastic hinge (2). A flexible pad (3) is provided on the inner side of each jaw (1). The flexible pad (3) is made of a polymer material with a thickness of 1.0-3.0 mm, and the surface of the flexible pad (3) has several microporous structures. An extension rod (5) is fixed to the tail end of each of the two jaws (1), and the end of the extension rod (5) is provided with a threaded section. The adjusting assembly includes a hollow adjusting rod (6). Both ends of the adjusting rod (6) are provided with threaded holes. The threaded sections of the two extension rods (5) are screwed into the threaded holes at both ends of the adjusting rod (6). The middle part of the adjusting rod (6) is provided with a through groove. A slider (7) is installed in the groove. A rotary knob (8) is fixed on the top of the slider (7). A positioning pin is fixed on the bottom of the slider (7). The end of the positioning pin contacts the inner wall of the adjusting rod (6). The support assembly includes a base (9). A circular groove is provided on the top surface of the base (9). A bearing (10) is fixed at the center of the circular groove. The bottom of the adjusting rod (6) is inserted into the bearing (10) and fixedly connected to the inner ring of the bearing (10).

2. The portable jewelry inspection clamping mechanism according to claim 1, characterized in that: The inner side of the gripper (1) is also provided with an auxiliary clamping mechanism, which includes multiple micro suction cups (4). The micro suction cups (4) are evenly distributed on the surface of the flexible pad (3). Each micro suction cup (4) has a diameter of 2.0-5.0 mm and a height of 1.0-2.0 mm.

3. The portable jewelry inspection clamping mechanism according to claim 1, characterized in that: The outer wall of the adjusting rod (6) is provided with a scale mark, which is distributed along the length of the adjusting rod (6), and the smallest scale mark is 0.1mm.

4. The portable jewelry inspection clamping mechanism according to claim 1, characterized in that: The base (9) has a lighting module on its side. The lighting module includes an LED bead (12) and a lens (13). The LED bead (12) is fixed to the side of the base (9). The lens (13) is fixedly connected to the side of the base (9) through a bracket. The central axis of the lens (13) is perpendicular to the light-emitting surface of the LED bead (12). The focal length of the lens (13) is 5.0-10.0 cm.

5. The portable jewelry inspection clamping mechanism according to claim 1, characterized in that: The top surface of the base (9) is also provided with an angle adjustment mechanism, which includes an annular track (14) and a sliding block (15). The annular track (14) is fixed on the top surface of the base (9), and the sliding block (15) is installed on the annular track (14). The top of the sliding block (15) is connected to the bottom of the adjustment rod (6) through a universal joint.

6. The portable jewelry inspection clamping mechanism according to claim 1, characterized in that: The base (9) has a storage cavity (16) inside. The opening of the storage cavity (16) is located on one side of the base (9). A detachable cover plate (17) is provided at the opening. The cover plate (17) is fixedly connected to the base (9) by a buckle.

7. The portable jewelry inspection clamping mechanism according to claim 1, characterized in that: The tail end of the gripper (1) is provided with a locking mechanism, which includes a locking bolt and a locking block. The locking bolt passes through the tail end of the extension rod (5) and is threadedly connected to the locking block. The inner side of the locking block is provided with a rubber gasket with a thickness of 1.0-2.0 mm.

8. The portable jewelry inspection clamping mechanism according to claim 1, characterized in that: The base (9) has four evenly distributed feet (11) on its bottom surface. Each foot (11) is equipped with an anti-slip pad at its bottom end. The anti-slip pad is made of silicone material and has a thickness of 5.0-8.0 mm.

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