A jewelry detection device with scratch-proof function

Abstract

The utility model belongs to jewelry detection technical field especially relates to a jewelry detection device with scratch prevention function, including detection stage, the middle part of detection stage upper surface is equipped with detection groove, the inboard symmetry of detection groove is provided with support, the support is inverted U shape, the opening end of support is fixedly connected with adhesive tape, is used for the fixed jewelry of wrapping in the process of jewelry clamping, the middle part of detection stage upper surface rear side is fixedly connected with detection appearance, the both sides of detection stage are provided with telescopic mechanism, are used for controlling two groups of adhesive tape and are clamped to jewelry, place the jewelry to be detected in the detection groove of detection stage middle part, the inboard symmetry of detection groove is provided with inverted U shape support as the core component of jewelry clamping, and the adhesive tape of its opening end fixed can completely wrap the jewelry surface in the process of clamping, avoids the direct contact of metal support and jewelry, prevents the jewelry from being scratched in the detection process from the root.

Description

Technical Field

[0001] This utility model belongs to the field of jewelry testing technology, and in particular relates to a jewelry testing device with anti-scratch function. Background Technology

[0002] In the jewelry industry, jewelry testing is a crucial step in ensuring jewelry quality and determining its authenticity and value, encompassing multiple core requirements such as diamond clarity assessment, gemstone color grading, and metal purity testing. As consumers' demands for jewelry quality increase and the industry develops towards standardization, the market is placing higher demands on the accuracy, safety, and versatility of jewelry testing equipment.

[0003] The inventors discovered that at least the following problems remain unresolved in the existing technology: traditional devices often use metal clamps to directly fix jewelry, but jewelry materials are special. For example, diamonds and jade are hard but brittle, while pearls and amber have soft surfaces. Direct contact between metal and jewelry can easily cause friction and scratches, damaging the appearance and value. In addition, most devices do not have a force adjustment function. If the force is too small, the jewelry may shift and affect the test data. If the force is too large, it may be squeezed and deformed, especially for inlaid jewelry, which may cause gemstones to fall out.

[0004] Meanwhile, traditional devices have poor adaptability, requiring frequent changes of specialized clamps to handle jewelry of different sizes and shapes. This is cumbersome and increases costs, and secondary clamping also increases the risk of scratches. In terms of the detection angle, traditional clamps are mostly fixed, requiring manual loosening and adjustment before re-clamping, which is inefficient and difficult to accurately reset, leading to deviations in the detection data.

[0005] Therefore, we propose a jewelry testing device with scratch-resistant function, which can solve the above problems. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned technical problems by providing a jewelry testing device with anti-scratch function, which can achieve anti-scratch protection, stable clamping, multi-angle adjustment, and intelligent control.

[0007] In view of this, the present invention provides a jewelry testing device with anti-scratch function, including a testing platform, a testing groove is provided in the middle of the upper surface of the testing platform, a bracket is symmetrically arranged on the inner side of the testing groove, the bracket is in the shape of an inverted U, and an adhesive strip is fixedly connected to the open end of the bracket for wrapping and fixing the jewelry during the jewelry clamping process. A testing instrument is fixedly connected to the middle of the rear side of the upper surface of the testing platform. The testing platform is equipped with telescopic mechanisms on both sides to control the two sets of adhesive strips to clamp the jewelry. The bottom side of the telescopic mechanism is provided with a drive mechanism for driving the jewelry to rotate and adjusting the detection angle; One side of the telescopic mechanism is equipped with a control component for controlling the clamping force of the adhesive strip on the jewelry.

[0008] Furthermore, the telescopic mechanism includes a slide bar for controlling the movement of the support. The slide bar is fixedly installed in the middle of the support on the side away from the rubber strip. Control slots are symmetrically opened on both sides of the testing platform. A connecting pipe is horizontally arranged inside the control slot. The end of the slide bar away from the support is placed inside the connecting pipe and a piston is fixedly installed thereon. The piston is slidably connected to the connecting pipe.

[0009] Furthermore, an air guide groove is provided on the side of the control groove away from the bracket, and the end of the connecting pipe away from the bracket is placed in the air guide groove. An air inlet pipe and an air outlet pipe are respectively installed through the inner wall of the air guide groove on the side away from the connecting pipe.

[0010] Furthermore, a spring is provided on the side of the piston near the bracket, the spring is placed inside the connecting tube, and the spring is sleeved on the outside of the slide bar.

[0011] Furthermore, a sliding groove is provided through the side of the connecting pipe near the bracket, and the sliding groove is slidably connected to the slide bar.

[0012] Furthermore, the control component includes a pressure sensor for detecting the internal air pressure of the connecting pipe. The pressure sensor is fixedly connected to the inner wall of the top of the air guide groove. Solenoid valves are installed inside the air inlet pipe and the air outlet pipe. A controller is installed above one side of the detection platform.

[0013] Furthermore, the drive mechanism includes a secondary gear fixedly installed on the outside of the connecting pipe, and a main gear that drives the secondary gear to rotate. A servo motor is fixedly connected to the lower part of the inner wall of the control slot near the bracket. The shaft end of the servo motor is fixedly connected to the middle part of the main gear, and the main gear meshes with the secondary gear.

[0014] Furthermore, the connecting pipe is rotatably connected to the inner walls on both sides of the control groove via a sealed bearing, and the bracket is sized to match the detection groove.

[0015] The beneficial effects of this utility model are: 1. Place the jewelry to be tested in the testing slot in the middle of the testing table. The inverted U-shaped brackets symmetrically arranged inside the testing slots serve as the core components for jewelry clamping. The adhesive strips fixed at the open end of the brackets can completely wrap the surface of the jewelry during the clamping process, preventing the metal brackets from directly contacting the jewelry and preventing the jewelry from being scratched during the testing process.

[0016] 2. The telescopic mechanisms on both sides of the testing platform control the two sets of supports to move closer or further apart synchronously via mechanical transmission, achieving stable clamping of jewelry of different sizes. When it is necessary to test the jewelry at different angles, the drive mechanism on the bottom of the telescopic mechanism can drive the clamped jewelry to rotate around the horizontal axis, flexibly adjusting the testing angle to ensure that the testing instrument can fully cover the surface of the jewelry. At the same time, the control component on one side of the telescopic mechanism can monitor and adjust the clamping force of the rubber strip on the jewelry in real time, avoiding the jewelry from shifting during rotation due to insufficient force, and preventing the jewelry from being squeezed and damaged due to excessive force, ultimately achieving the integrated function of "anti-scratch, stable clamping and multi-angle testing". Attached Figure Description

[0017] Figure 1 This is the front view of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of part A of this utility model; The markings in the diagram are as follows: 1. Testing table; 11. Testing slot; 12. Support; 13. Adhesive strip; 14. Testing instrument; 2. Control slot; 21. Air guide slot; 22. Connecting pipe; 23. Sliding bar; 24. Piston; 25. Slide groove; 26. Spring; 3. Inlet pipe; 31. Outlet pipe; 32. Solenoid valve; 33. Air pressure sensor; 34. Controller; 4. Secondary gear; 41. Servo motor; 42. Main gear; 43. Sealed bearing. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1 to 3 A jewelry testing device with scratch-resistant function includes a testing platform 1. A testing groove 11 is formed in the middle of the upper surface of the testing platform 1. A bracket 12 is symmetrically arranged on the inner side of the testing groove 11. The bracket 12 is inverted U-shaped. An adhesive strip 13 is fixedly connected to the open end of the bracket 12 for wrapping and fixing the jewelry during the jewelry clamping process. A testing instrument 14 is fixedly connected to the middle of the rear side of the upper surface of the testing platform 1. Telescopic mechanisms are provided on both sides of the testing platform 1 for controlling the two sets of adhesive strips 13 to clamp the jewelry. A driving mechanism is provided on the bottom side of the telescopic mechanism for driving the jewelry to rotate and adjusting the testing angle. A control component is provided on one side of the telescopic mechanism for controlling the clamping force of the adhesive strips 13 on the jewelry.

[0020] The jewelry to be tested is placed in the testing slot 11 in the middle of the testing table 1. The inverted U-shaped brackets 12, symmetrically arranged inside the testing slots 11, serve as the core component for jewelry clamping. The adhesive strips 13 fixed at their open ends completely cover the surface of the jewelry during clamping, preventing direct contact between the metal brackets 12 and the jewelry, thus preventing scratches on the jewelry during testing. The testing instrument 14 in the middle of the rear side of the testing table 1 provides professional testing functions for jewelry quality inspection. During the jewelry fixing stage, the telescopic mechanisms on both sides of the testing platform 1 control the two sets of brackets 12 to move closer or further apart synchronously through mechanical transmission, thereby achieving stable clamping of jewelry of different sizes. When it is necessary to test the jewelry at different angles, the drive mechanism on the bottom of the telescopic mechanism can drive the clamped jewelry to rotate around the horizontal axis, flexibly adjusting the testing angle to ensure that the testing instrument 14 can fully cover the surface of the jewelry. At the same time, the control component on one side of the telescopic mechanism can monitor and adjust the clamping force of the adhesive strip 13 on the jewelry in real time, which avoids the jewelry from shifting during rotation due to insufficient force, and also prevents the jewelry from being squeezed and damaged due to excessive force, ultimately achieving the integrated function of "anti-scratch, stable clamping and multi-angle testing".

[0021] Furthermore, the telescopic mechanism includes a slide bar 23 for controlling the movement of the support 12. The slide bar 23 is fixedly installed in the middle of the side of the support 12 away from the rubber strip 13. Control grooves 2 are symmetrically opened on both sides of the detection table 1. A connecting pipe 22 is horizontally arranged inside the control groove 2. The end of the slide bar 23 away from the support 12 is placed inside the connecting pipe 22 and a piston 24 is fixedly installed thereon. The piston 24 is slidably connected to the connecting pipe 22.

[0022] When jewelry needs to be clamped, gas is introduced into the connecting pipe 22 through an external air source. The increased air pressure inside the pipe pushes the piston 24 towards the detection groove 11. The piston 24 drives the slide bar 23 to slide synchronously along the slide groove 25, thereby pushing the bracket 12 towards the jewelry until the adhesive strip 13 wraps around the jewelry and achieves stable clamping. When the detection is complete and the jewelry needs to be released, the air pressure inside the connecting pipe 22 decreases. Under the restoring force of the subsequent spring 26, the piston 24 moves away from the detection groove 11, driving the slide bar 23 and the bracket 12 to reset synchronously, thus releasing the jewelry. It should be noted that a sealing ring can be provided on the outside of the piston 24 to improve the sealing performance between the piston 24 and the inner wall of the connecting pipe 22.

[0023] Furthermore, an air guide groove 21 is provided on the side of the control groove 2 away from the bracket 12, and the end of the connecting pipe 22 away from the bracket 12 is placed in the air guide groove 21. An air inlet pipe 3 and an air outlet pipe 31 are respectively installed through the inner wall of the side of the air guide groove 21 away from the connecting pipe 22.

[0024] Both the inlet pipe 3 and the outlet pipe 31 are installed through the inner wall of the air guide groove 21 on the side away from the connecting pipe 22. The inlet pipe 3 is used to connect to an external air source and input compressed gas into the air guide groove 21. After being buffered by the air guide groove 21, the gas smoothly enters the connecting pipe 22, pushing the piston 24 to move the bracket 12 to clamp the jewelry. The outlet pipe 31 is used to discharge the gas in the air guide groove 21 and the connecting pipe 22. When it is necessary to loosen the jewelry, the outlet pipe 31 is opened, and the air pressure in the connecting pipe 22 is quickly discharged from the outlet pipe 31 through the air guide groove 21, providing conditions for the piston 24 and the bracket 12 to reset.

[0025] Furthermore, a spring 26 is provided on the side of the piston 24 near the bracket 12. The spring 26 is placed inside the connecting pipe 22 and sleeved on the outside of the slide bar 23.

[0026] When the jewelry is clamped, the air pressure inside the connecting tube 22 increases, pushing the piston 24 towards the detection groove 11. At this time, the piston 24 compresses the spring 26, and the spring 26 generates a spring force in the opposite direction to the movement of the piston 24. This spring force can buffer the movement speed of the piston 24 and prevent the bracket 12 from moving too fast, causing the rubber strip 13 to collide violently with the jewelry, thus protecting the jewelry. When the detection is completed and the jewelry needs to be released, the air pressure inside the connecting tube 22 decreases, the spring force of the spring 26 is released, pushing the piston 24 away from the detection groove 11, thereby driving the slide 23 and the bracket 12 to reset synchronously, realizing the automatic release of the jewelry.

[0027] Furthermore, a groove 25 is provided through the side of the connecting pipe 22 near the bracket 12, and the groove 25 is slidably connected to the slide bar 23.

[0028] When the piston 24 drives the slide bar 23 to move axially along the connecting pipe 22, the slide bar 23 always slides within the groove 25. The sidewall of the groove 25 constrains the slide bar 23 in the left-right and up-down directions, preventing the slide bar 23 from shifting laterally or rotating. This ensures that the bracket 12, which is fixedly connected to the slide bar 23, always moves horizontally towards the jewelry. At the same time, the cooperation between the groove 25 and the slide bar 23 reduces the shaking of the slide bar 23 during movement, making the force of the bracket 12 clamping the jewelry more even and preventing excessive local pressure on the adhesive strip 13 due to the tilt of the bracket 12, which could damage the surface of the jewelry.

[0029] Furthermore, the control component includes a pressure sensor 33 for detecting the internal air pressure of the connecting pipe 22. The pressure sensor 33 is fixedly connected to the inner wall of the top of the air guide groove 21. Solenoid valves 32 are installed inside the air inlet pipe 3 and the air outlet pipe 31. A controller 34 is installed above one side of the detection platform 1.

[0030] When jewelry needs to be clamped, the controller 34 issues a command to open the solenoid valve 32 of the air inlet pipe 3. An external air source supplies air to the air guide groove 21 and connecting pipe 22 through the air inlet pipe 3. The air pressure sensor 33 monitors the air pressure in the pipe in real time and feeds it back to the controller 34. When the air pressure reaches the preset value (corresponding to the appropriate clamping force), the controller 34 commands to close the solenoid valve 32 of the air inlet pipe 3 to stop the air supply. At this time, the clamping force of the adhesive strip 13 on the jewelry just meets the detection requirements. It will not cause the jewelry to shift due to insufficient force, nor will it damage the jewelry due to excessive force. When the detection is completed and the jewelry needs to be released, the controller 34 commands to open the solenoid valve 32 of the air outlet pipe 31. The gas in the pipe is discharged through the air outlet pipe 31. When the air pressure sensor 33 detects that the air pressure has dropped to the preset lower limit value, the controller 34 commands to close the solenoid valve 32 of the air outlet pipe 31 to complete the release of the jewelry.

[0031] Furthermore, the drive mechanism includes a secondary gear 4 fixedly installed on the outside of the connecting pipe 22, and a main gear 42 that drives the secondary gear 4 to rotate. A servo motor 41 is fixedly connected to the lower part of the inner wall of the control groove 2 near the bracket 12. The shaft end of the servo motor 41 is fixedly connected to the middle part of the main gear 42, and the main gear 42 meshes with the secondary gear 4.

[0032] When the jewelry detection angle needs to be adjusted, the controller 34 sends a rotation command to the servo motor 41. The output shaft of the servo motor 41 drives the main gear 42 to rotate. The main gear 42 drives the secondary gear 4 to rotate synchronously through meshing transmission. The secondary gear 4 drives the connecting tube 22 to rotate around its axis. Since the slide bar 23 is fixed to the piston 24 inside the connecting tube 22, and the bracket 12 is fixed to the slide bar 23, when the connecting tube 22 rotates, it will drive the slide bar 23, piston 24, bracket 12, and the jewelry clamped by the adhesive strip 13 to rotate synchronously, thereby realizing the adjustment of the jewelry detection angle.

[0033] Furthermore, the connecting pipe 22 is rotatably connected to the inner walls on both sides of the control groove 2 via the sealed bearing 43, and the bracket 12 is sized to match the detection groove 11.

[0034] On the one hand, the sealed bearing 43 provides low-friction support for the rotation of the connecting pipe 22, ensuring that the connecting pipe 22 rotates smoothly around the axis under the drive mechanism, reducing rotational resistance, and avoiding overload of the servo motor 41 or jamming of the jewel due to excessive resistance; on the other hand, the sealing structure of the sealed bearing 43 can effectively prevent dust and impurities in the control groove 2 from entering the gap between the connecting pipe 22 and the control groove 2, while preventing gas in the connecting pipe 22 from leaking from the rotating connection, ensuring stable air pressure in the connecting pipe 22, avoiding affecting the clamping force of the bracket 12 due to air pressure leakage, and ensuring the reliability of the telescopic mechanism.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A jewelry testing device with scratch-resistant function, characterized in that: The device includes a testing platform (1), a testing groove (11) is provided in the middle of the upper surface of the testing platform (1), a bracket (12) is symmetrically arranged on the inner side of the testing groove (11), the bracket (12) is in the shape of an inverted U, and an adhesive strip (13) is fixedly connected to the open end of the bracket (12) for wrapping and fixing the jewelry during the jewelry clamping process. A testing instrument (14) is fixedly connected to the middle of the rear side of the upper surface of the testing platform (1). The testing platform (1) is equipped with telescopic mechanisms on both sides to control the two sets of adhesive strips (13) to clamp the jewelry. The bottom side of the telescopic mechanism is provided with a drive mechanism for driving the jewelry to rotate and adjusting the detection angle; The telescopic mechanism is provided with a control component on one side to control the clamping force of the adhesive strip (13) on the jewelry.

2. The jewelry testing device with anti-scratch function according to claim 1, characterized in that: The telescopic mechanism includes a slide bar (23) for controlling the movement of the support (12). The slide bar (23) is fixedly installed in the middle of the side of the support (12) away from the rubber strip (13). The detection table (1) is symmetrically provided with control slots (2) on both sides. A connecting pipe (22) is horizontally arranged inside the control slot (2). The end of the slide bar (23) away from the support (12) is placed inside the connecting pipe (22) and a piston (24) is fixedly installed thereon. The piston (24) is slidably connected to the connecting pipe (22).

3. The jewelry testing device with anti-scratch function according to claim 2, characterized in that: The control slot (2) has an air guide slot (21) on the side away from the bracket (12). The end of the connecting pipe (22) away from the bracket (12) is placed in the air guide slot (21). The inner wall of the air guide slot (21) away from the connecting pipe (22) is respectively connected by an air inlet pipe (3) and an air outlet pipe (31).

4. A jewelry testing device with anti-scratch function according to claim 3, characterized in that: A spring (26) is provided on the side of the piston (24) near the bracket (12). The spring (26) is placed inside the connecting tube (22) and sleeved on the outside of the slide bar (23).

5. A jewelry testing device with scratch-resistant function according to claim 4, characterized in that: The connecting pipe (22) has a groove (25) through it on the side near the bracket (12), and the groove (25) is slidably connected to the slide bar (23).

6. A jewelry testing device with scratch-resistant function according to claim 5, characterized in that: The control component includes a pressure sensor (33) for detecting the internal air pressure of the connecting pipe (22). The pressure sensor (33) is fixedly connected to the inner wall of the top of the air guide groove (21). Solenoid valves (32) are installed inside the air inlet pipe (3) and the air outlet pipe (31). A controller (34) is installed above one side of the detection platform (1).

7. A jewelry testing device with anti-scratch function according to claim 2, characterized in that: The drive mechanism includes a secondary gear (4) fixedly installed on the outside of the connecting pipe (22) and a main gear (42) that drives the secondary gear (4) to rotate. A servo motor (41) is fixedly connected to the lower part of the inner wall of the control groove (2) near the bracket (12). The shaft end of the servo motor (41) is fixedly connected to the middle part of the main gear (42). The main gear (42) meshes with the secondary gear (4).

8. A jewelry testing device with scratch-resistant function according to claim 7, characterized in that: The connecting pipe (22) is rotatably connected to the inner walls on both sides of the control groove (2) via a sealed bearing (43), and the bracket (12) is sized to match the detection groove (11).

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