Jewelry polishing device

Abstract

The utility model discloses a jewelry polishing device which comprises an inverted-U-shaped frame, a polishing head, a polishing head and a polishing head. The bottom of the inverted-U-shaped frame is fixedly connected with a bottom plate. And the four-direction synchronous driving assembly is fixedly installed on the inner wall of the top of the inverted-U-shaped frame, and a driving motor with an output shaft fixedly connected with the four-direction synchronous driving assembly is fixedly installed at the top of the inverted-U-shaped frame. By arranging a series of structures, the bracelet jewelry can be conveniently supported, clamped and fixed from inside to outside or clamped and fixed from outside to inside, the bracelet jewelry is driven to rotate, the outer side and the inner side of the bracelet jewelry can be conveniently and sequentially polished in a flexible and convertible mode of fixing the inner side and the outer side, different devices do not need to be adopted for operation, and the operation is convenient. In addition, by means of the mode that the four rotating wheels can be adjusted in an expanding and retracting mode, the bracelet jewelry positioning device is suitable for positioning bracelet jewelry of different specifications, different positioning molds do not need to be adopted, and universality is improved.

Description

Technical Field

[0001] This utility model relates to the field of jewelry polishing technology, specifically a jewelry polishing device. Background Technology

[0002] Jewelry refers to the raw materials and semi-finished products of gemstones and precious metals, as well as the ornaments, decorative crafts, and art collectibles made from these materials. Among jewelry, bracelets, worn on the outer side of the wearer's arm, are often made of jadeite, also known as jade bangles. These are ring-shaped ornaments worn on the wrist, typically made of gold, silver, or jade. Bracelets have a long history, originating in the transition from matriarchal to patriarchal societies. According to historical records, in ancient times, both men and women wore bracelets; for women, they symbolized marriage, while for men, they symbolized status or occupation.

[0003] In the manufacturing of jewelry bracelets, polishing devices are required for polishing. However, current polishing devices have the following problems: 1. Polishing the inner and outer sides of the bracelet is often done using different equipment due to different positioning methods, which is not ideal in terms of ease of use; 2. Different sizes of bracelets require corresponding positioning molds, making it difficult to apply to the positioning and polishing of bracelets of various sizes, resulting in poor versatility. In view of this, this application proposes a jewelry polishing device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a jewelry polishing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a jewelry polishing device, comprising:

[0006] The inverted U-shaped frame has a base plate fixedly connected to its bottom.

[0007] A four-way synchronous drive assembly is fixedly installed on the top inner wall of an inverted U-shaped frame. A drive motor with an output shaft fixedly connected to the four-way synchronous drive assembly is fixedly installed on the top of the inverted U-shaped frame.

[0008] The four-point support clamp rotary drive assembly is fixedly installed at the bottom of the four-way synchronous drive assembly. The four-way synchronous drive assembly is used to drive the four-point support clamp rotary drive assembly to expand or contract synchronously at four points when the drive motor starts. The four-point support clamp rotary drive assembly is used to clamp and fix the bracelet jewelry to be polished when expanding synchronously at four points, or to clamp and fix the bracelet jewelry to be polished when contracting synchronously, and is used to drive the bracelet jewelry to be polished to rotate after fixing.

[0009] The transverse guide and transverse drive assembly is installed between the right side of the inverted U-shaped frame and the top of the base plate;

[0010] The arc-shaped polishing disc is magnetically attached to the top left side of the horizontal guide drive assembly. The horizontal guide drive assembly is used to drive the arc-shaped polishing disc to move horizontally left and right. When it is fixed in the inner support clamp, the left-moving arc-shaped polishing disc is used to polish the outer side of the rotating bracelet jewelry. When it is fixed in the outer clamp, the left-moving arc-shaped polishing disc is used to move to the inner side of the bracelet jewelry and make contact with its left inner wall for inner polishing.

[0011] Preferably, the four-way synchronous drive assembly includes a fixed box fixedly connected to the inner wall of the top of the inverted U-shaped frame. Rectangular inner tubes are fixedly connected to all four sides of the fixed box. A rectangular outer tube is slidably sleeved on the rectangular inner tube. The end of the rectangular outer tube away from the fixed box is set as a sealing structure. A rectangular guide rod is fixedly connected to the inner wall of the end of the rectangular outer tube away from the fixed box. The rectangular guide rod is slidably sleeved in the corresponding rectangular inner tube. A screw is rotatably installed in the rectangular inner tube. The rectangular guide rod is threaded on the corresponding screw. The near ends of the four screws extend into the fixed box and are fixedly connected to a first bevel gear. Two opposite first bevel gears are symmetrically arranged. The tops of the four first bevel gears mesh with the same second bevel gear. The top of the second bevel gear is fixedly connected to the bottom end of the output shaft of the drive motor.

[0012] Preferably, the four-point support clamping rotary drive assembly includes four spiral frames, which are respectively fixedly connected to the bottom of the corresponding rectangular outer tube. A rotating shaft is rotatably embedded at the bottom of the spiral frame, and a rotating wheel is fixedly connected to the bottom end of the rotating shaft. The outer middle part of the rotating wheel is set with a concave arc structure, and the outer side of the rotating wheel is covered with an anti-slip rubber sleeve. A first motor is fixedly installed on the top inner wall of the spiral frame on the left side. The bottom end of the output shaft of the first motor is fixedly connected to the top end of the rotating shaft on the left side. An arc-shaped polishing disc is located on the right side of the four rotating wheels.

[0013] Preferably, the transverse guide drive assembly includes a multi-stage electric telescopic rod fixedly installed on the right side of the inverted U-shaped frame. The extended end of the multi-stage electric telescopic rod extends into the inverted U-shaped frame and is fixedly connected to a first electric telescopic rod. The extended end of the first electric telescopic rod is fixedly connected to a rectangular sleeve. A magnet is fixedly connected to the inner wall of the right side of the rectangular sleeve. A rectangular iron block is fixedly connected to the right side of the arc-shaped polishing plate. The rectangular iron block is movably fitted into the rectangular sleeve and attracted to the left side of the magnet. The first electric telescopic rod is slidably installed on the top of the base plate.

[0014] Preferably, the rectangular guide rod has a threaded hole at one end near the fixed box that is threaded to the corresponding screw.

[0015] Preferably, the top of the base plate is fixedly connected to two T-shaped guide rails, and the bottom of the first electric telescopic rod is fixedly connected to a slider. The bottom of the slider has two T-shaped grooves with openings on both sides, and the T-shaped grooves are slidably connected to the corresponding T-shaped guide rails.

[0016] Preferably, a vertical guide tube is fixedly connected to the bottom left side of the rectangular sleeve, and a vertical guide rod fixedly connected to the top of the slider is slidably sleeved inside the vertical guide tube.

[0017] Preferably, rectangular clearance holes are provided on the inner walls of both sides of the inverted U-shaped frame, and the rectangular outer tubes on both sides are located in the corresponding rectangular clearance holes and do not contact their inner walls.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. Through the combination of the inverted U-shaped frame, drive motor, four-way synchronous drive group and four-point support clamping and rotating drive assembly, the bracelet jewelry can be clamped and fixed from the inside to the outside or from the outside to the inside, and the bracelet jewelry can be driven to rotate.

[0020] 2. With the help of the set horizontal guide and horizontal drive components and the arc-shaped polishing disc, the outer side can be polished when the inner side is positioned and rotated, and the inner side can be polished when the outer side is fixed and rotated. It is convenient to polish the outer and inner sides of the bracelet and jewelry in turn by flexibly changing the inner and outer fixing forms. There is no need to use different equipment to operate. It has the effect of integrated application and improves the convenience of use.

[0021] 3. In addition, the four rotating wheels can be expanded and retracted for adjustment, making it suitable for positioning bracelets and jewelry of different sizes without the need for different positioning molds, thus improving versatility.

[0022] This utility model features a series of structures that facilitate the clamping and fixing of bracelets and jewelry from the inside out or from the outside in, and drive the bracelets and jewelry to rotate. It also allows for flexible changes in the inner and outer fixing methods to polish the outer and inner sides of the bracelets and jewelry sequentially, eliminating the need for different equipment and achieving an integrated application effect, thus improving ease of use. In addition, the four rotating wheels can be expanded and retracted for positioning bracelets and jewelry of different sizes, eliminating the need for different positioning molds and improving versatility. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the jewelry polishing device proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the front cross-sectional structure of the jewelry polishing device proposed in this utility model;

[0025] Figure 3 for Figure 2 A magnified structural diagram of part A in the diagram.

[0026] In the diagram: 1. Inverted U-shaped frame; 101. Base plate; 102. Drive motor; 2. Fixing box; 201. Rectangular inner tube; 202. Rectangular outer tube; 203. Rectangular guide rod; 204. First bevel gear; 205. Second bevel gear; 206. Screw; 3. Recurve frame; 301. Rotating shaft; 302. Rotating wheel; 303. First motor; 4. Rectangular sleeve; 401. Multi-stage electric telescopic rod; 402. Slider; 403. Magnet block; 404. Vertical guide tube; 405. Vertical guide rod; 406. First electric telescopic rod; 5. Arc-shaped polishing disc; 501. Rectangular iron block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 3 As shown in this embodiment, a jewelry polishing device includes:

[0029] The inverted U-shaped frame 1 has a base plate 101 fixedly connected to its bottom;

[0030] The four-way synchronous drive assembly is fixedly installed on the top inner wall of the inverted U-shaped frame 1. The top of the inverted U-shaped frame 1 is fixedly installed with a drive motor 102 whose output shaft is fixedly connected to the four-way synchronous drive assembly.

[0031] The four-point support clamp rotary drive assembly is fixedly installed at the bottom of the four-way synchronous drive assembly. The four-way synchronous drive assembly is used to drive the four-point support clamp rotary drive assembly to expand or contract synchronously at four points when the drive motor 102 starts. The four-point support clamp rotary drive assembly is used to clamp and fix the bracelet jewelry to be polished when expanding synchronously at four points, or to clamp and fix the bracelet jewelry to be polished when contracting synchronously, and is used to drive the bracelet jewelry to be polished to rotate after fixing.

[0032] The transverse guide and transverse drive assembly is installed between the right side of the inverted U-shaped frame 1 and the top of the base plate 101;

[0033] The arc-shaped polishing plate 5 is magnetically attached to the top left side of the horizontal guide drive assembly. The horizontal guide drive assembly is used to drive the arc-shaped polishing plate 5 to move horizontally left and right. When it is fixed in the inner support clamp, the left-moving arc-shaped polishing plate 5 is used to polish the outer side of the rotating bracelet jewelry. When it is fixed in the outer clamp, the left-moving arc-shaped polishing plate 5 is used to move to the inner side of the bracelet jewelry and make contact with its left inner wall for inner polishing.

[0034] Specifically, the four-way synchronous drive assembly includes a fixed box 2 fixedly connected to the inner wall of the top of the inverted U-shaped frame 1. Rectangular inner tubes 201 are fixedly connected to all four sides of the fixed box 2. A rectangular outer tube 202 is slidably sleeved on the rectangular inner tube 201. The end of the rectangular outer tube 202 away from the fixed box 2 is configured as a sealing structure. A rectangular guide rod 203 is fixedly connected to the inner wall of the end of the rectangular outer tube 202 away from the fixed box 2. The rectangular guide rod 203 is slidably sleeved within the corresponding rectangular inner tube 201. A screw 206 is rotatably installed within the rectangular inner tube 201. A first bearing is fixedly connected between the top and bottom inner walls of the rectangular inner tube 201. The inner ring of the first bearing is fixedly connected to the outer side of the corresponding screw 206, thus achieving the effect of rotatably installing the screw 206. The rectangular guide rod 203 is threaded onto the corresponding screw 206. The rectangular guide rod 203 is closer to the fixed box 2. One end is provided with a threaded hole that is threaded to the corresponding screw 206. The threaded connection between the screw 206 and the threaded hole facilitates the lateral displacement of the corresponding rectangular guide rod 203 when the screw 206 rotates. The near ends of the four screws 206 extend into the fixed box 2 and are fixedly connected to the first bevel gear 204. The inner walls of the four sides of the fixed box 2 are provided with circular movable through holes for the corresponding screws 206 to pass through. The two opposite first bevel gears 204 are symmetrically arranged. The tops of the four first bevel gears 204 mesh with the same second bevel gear 205. The top of the second bevel gear 205 is fixedly connected to the bottom end of the output shaft of the drive motor 102. The inner walls of both sides of the inverted U-shaped frame 1 are provided with rectangular clearance through holes. The rectangular outer tubes 202 on both sides are located in the corresponding rectangular clearance through holes and do not contact their inner walls.

[0035] The fixed box 2, rectangular inner tube 201, rectangular outer tube 202, rectangular guide rod 203, screw 206, first bevel gear 204 and second bevel gear 205 are configured to cooperate. The drive motor 102 drives the second bevel gear 205 to rotate. The second bevel gear 205 drives the four first bevel gears 204 meshing with it to rotate. Since the two opposite first bevel gears 204 are symmetrically arranged, the two opposite first bevel gears 204 rotate in opposite directions. The four first bevel gears 204 drive the four screws 206 to rotate, and the two opposite screws 206 rotate in opposite directions. At this time, when the four screws 206 rotate, they drive the four rectangular guide rods 203 to expand outward or contract inward synchronously. The four rectangular guide rods 203 drive the four rectangular outer tubes 202 to expand outward or contract inward synchronously.

[0036] Furthermore, the four-point support clamping rotary drive assembly includes four loop frames 3, which are respectively fixedly connected to the bottom of the corresponding rectangular outer tube 202. A rotating shaft 301 is rotatably fitted into the bottom of each loop frame 3. A circular hole is provided at the bottom of each loop frame 3, and a second bearing is fixedly fitted inside the hole. The inner ring of the second bearing is fixedly fitted to the outer side of the rotating shaft 301, thus achieving the effect of rotating the rotating shaft 301. A rotating wheel 302 is fixedly connected to the bottom end of the rotating shaft 301. The outer center of the rotating wheel 302 is designed with a concave arc structure, and an anti-slip rubber sleeve is adhesively applied to the outer side of the rotating wheel 302. A first motor 303 is fixedly installed on the top inner wall of the loop frame 3 on the left side. The bottom end of the output shaft of the first motor 303 is fixedly connected to the top end of the rotating shaft 301 on the left side. An arc-shaped polishing plate 5 is located on the right side of the four rotating wheels 302. The loop frames 3, rotating shafts 301, rotating wheels 302, anti-slip rubber sleeves, and... The first motor 303 works in conjunction with four rectangular outer tubes 202 to expand outward or contract inward simultaneously. This allows four rotating wheels 302 to expand outward or contract inward sequentially via four U-shaped frames 3 and four rotating shafts 301. When expanding outward, the bracelet / jewelry can be clamped and fixed from the inside out. When contracting inward after expanding to the maximum position, the bracelet / jewelry can be clamped and fixed from the outside. This provides a variable internal and external fixing method, making it convenient to clamp and fix from the inside when polishing the outside and to clamp from the outside when polishing the inside. This offers high flexibility. When fixing, the first motor 303 drives the left rotating wheel 302 to rotate via the left rotating shaft 301. The left rotating wheel 302 rotates the bracelet / jewelry through friction with the corresponding anti-slip rubber sleeve. The friction of the bracelet / jewelry drives the other three rotating wheels 302 to rotate, achieving the effect of variable internal and external fixing of the bracelet / jewelry and driving its rotation.

[0037] Furthermore, the transverse guide drive assembly includes a multi-stage electric telescopic rod 401 fixedly installed on the right side of the inverted U-shaped frame 1. The extended end of the multi-stage electric telescopic rod 401 extends into the inverted U-shaped frame 1 and is fixedly connected to a first electric telescopic rod 406. The extended end of the first electric telescopic rod 406 is fixedly connected to a rectangular sleeve 4. A magnet 403 is fixedly connected to the inner wall of the right side of the rectangular sleeve 4. A rectangular iron block 501 is fixedly connected to the right side of the arc-shaped polishing plate 5. The rectangular iron block 501 is movably fitted into the rectangular sleeve 4 and attracted to the left side of the magnet 403. The first electric telescopic rod 406... The first electric telescopic rod 406 is slidably mounted on the top of the base plate 101. Two T-shaped guide rails are fixedly connected to the top of the base plate 101. A slider 402 is fixedly connected to the bottom of the first electric telescopic rod 406. Two T-shaped grooves with openings on both sides are formed at the bottom of the slider 402. The T-shaped grooves slidably connect to the corresponding T-shaped guide rails, providing lateral guidance for the first electric telescopic rod 406. A vertical guide tube 404 is fixedly connected to the bottom left side of the rectangular sleeve 4. A vertical guide rod 405, fixedly connected to the top of the slider 402, is slidably fitted inside the vertical guide tube 404, providing vertical guidance for the rectangular sleeve 4. The system utilizes a multi-stage electric telescopic rod 401, a first electric telescopic rod 406, a magnet 403, a vertical guide tube 404, a vertical guide rod 405, and a rectangular retaining sleeve 4. The multi-stage electric telescopic rod 401, via the first electric telescopic rod 406, drives the rectangular retaining sleeve 4 to move left or right. The rectangular retaining sleeve 4 then moves the arc-shaped polishing plate 5 left or right, allowing it to adhere to the outer side of the rotating bracelet / jewelry for polishing. For inner-side polishing, the first electric telescopic rod 406 is activated in the reverse direction, driving the rectangular retaining sleeve 4 downwards. The rectangular retaining sleeve 4 then moves the arc-shaped polishing plate 5... Move it down to a low position, then activate the multi-stage electric telescopic rod 401 in the forward direction to drive the arc polishing plate 5 to move to the lower inner side of the bracelet / jewelry. Then activate the first electric telescopic rod 406 in the forward direction to drive the arc polishing plate 5 to move up to the inside of the bracelet / jewelry. Continue to activate the multi-stage electric telescopic rod 401 in the forward direction to drive the arc polishing plate 5 to fit against the inner left side of the bracelet / jewelry for inner polishing. In addition, the magnetic snap-fit ​​fixing method formed by the rectangular iron card block 501, the rectangular card slot and the magnetic block 403 makes it convenient for personnel to easily insert and remove the arc polishing plate 5 to replace it with the corresponding specifications according to different sizes of bracelets / jewelry.

[0038] The usage method of this embodiment is as follows: When using the jewelry polishing device, firstly, place the jewelry bracelet or ornament with polishing paste, polishing oil, or corresponding polishing material applied to its outer side onto the outside of the four rotating wheels 302. Then, start the drive motor 102 in the forward direction to drive the second bevel gear 205 to rotate. The second bevel gear 205 drives the four first bevel gears 204 meshing with it to rotate. Since the two opposite first bevel gears 204 are symmetrically arranged, the two opposite first bevel gears 204 rotate in opposite directions. The four first bevel gears 204 drive the four screws 206 to rotate, and the two opposite screws 206 rotate in opposite directions. At this time, when the four screws 206 rotate, they drive the four rectangular guide rods 203 to expand outward synchronously. The four rectangular guide rods 203 drive the four rectangular outer tubes 202 to slide outward synchronously on the four rectangular inner tubes 201. A rectangular outer tube 202 drives four rotating wheels 302 to expand outward through four U-shaped frames 3 and four rotating shafts 301, clamping and fixing the bracelet jewelry from the inside out. Then, the first motor 303 is started to drive the left rotating wheel 302 to rotate through the left rotating shaft 301. The left rotating wheel 302 drives the bracelet jewelry to rotate through the friction of the corresponding anti-slip rubber sleeve. The friction of the bracelet jewelry drives the other three rotating wheels 302 to rotate, achieving the effect of clamping and positioning the bracelet jewelry from the inside out and driving its rotation. At this time, the multi-stage electric telescopic rod 401 is started in the forward direction to drive the rectangular sleeve 4 to move to the left through the first electric telescopic rod 406. The first electric telescopic rod 406 drives the slider 402 to slide to the left on the two T-shaped guide rails to perform horizontal guiding work. The rectangular sleeve 4 drives the arc-shaped polishing plate 5 to move to the left and fits with the rotating bracelet jewelry to perform rotary polishing work.

[0039] When polishing the inside of the bracelet jewelry, before clamping, the drive motor 102 is first started in the forward direction, with the same movement direction as the forward start of the drive motor 102, causing the four rotating wheels 302 to move outward. After the four rotating wheels 302 expand outward beyond the outer diameter of the bracelet jewelry, the bracelet jewelry is placed between the four rotating wheels 302. Then, the drive motor 102 is started in the reverse direction, with the movement direction completely opposite to the forward start of the drive motor 102. At this time, the four rotating wheels 302 change to retract inward, clamping and fixing the bracelet jewelry from the outside in. Then, the first electric telescopic rod 406 is started in the reverse direction, causing it to drive the rectangular sleeve 4 to move downward. The rectangular sleeve 4 drives the arc polishing plate 5 to move downward to a lower position. Then, the multi-stage electric telescopic rod 401 is started in the forward direction, driving the arc polishing plate 5 to move to the left to the lower inside of the bracelet jewelry. Then, the first electric telescopic rod 406 is started in the forward direction, driving the arc polishing plate 5 upward. Move it inside the bracelet / jewelry, then continue to activate the multi-stage electric telescopic rod 401 to drive the arc-shaped polishing plate 5 to fit against the inner left side of the bracelet / jewelry. Then, activate the first motor 303 again to drive the bracelet / jewelry to rotate. At this time, the arc-shaped polishing plate 5 polishes the inner side of the rotating bracelet / jewelry. This allows for convenient and flexible polishing of the outer and inner sides of the bracelet / jewelry through a flexible change in the inner and outer fixing method, eliminating the need for different equipment and providing an integrated application effect, thus improving ease of use. Furthermore, the four rotating wheels 302 can be expanded and retracted for positioning bracelets / jewelry of different sizes, eliminating the need for different positioning molds and improving versatility. Additionally, the magnetic clamping method formed by the rectangular iron card block 501, rectangular card slot, and magnetic block 403 facilitates easy replacement of the arc-shaped polishing plate 5 with different sizes of bracelets / jewelry.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A jewelry polishing device comprising an inverted U-shaped stand (1), characterized in that: include: An inverted U-shaped frame (1) has a base plate (101) fixedly connected to its bottom; The four-way synchronous drive assembly is fixedly installed on the top inner wall of the inverted U-shaped frame (1), and the top of the inverted U-shaped frame (1) is fixedly installed with a drive motor (102) whose output shaft is fixedly connected to the four-way synchronous drive assembly; The four-point support clamp rotary drive assembly is fixedly installed at the bottom of the four-way synchronous drive assembly; The transverse guide and transverse drive assembly is installed between the right side of the inverted U-shaped frame (1) and the top of the base plate (101); The arc-shaped polishing disc (5) is magnetically attached to the top left side of the transverse guide drive assembly.

2. A jewelry polishing device according to claim 1, wherein: The four-way synchronous drive assembly includes a fixed box (2) fixedly connected to the inner wall of the top of the inverted U-shaped frame (1). Rectangular inner tubes (201) are fixedly connected to all four sides of the fixed box (2). A rectangular outer tube (202) is slidably fitted onto the rectangular inner tube (201). The end of the rectangular outer tube (202) away from the fixed box (2) is configured as a sealing structure. A rectangular guide rod (203) is fixedly connected to the inner wall of the end of the rectangular outer tube (202) away from the fixed box (2). The rectangular guide rod (203) is slidably fitted into the corresponding rectangular inner tube (201). A screw (206) is rotatably installed inside a rectangular inner tube (201). A rectangular guide rod (203) is threaded onto the corresponding screw (206). The ends of the four screws (206) that are close to each other extend into the fixed box (2) and are fixedly connected to a first bevel gear (204). Two opposite first bevel gears (204) are symmetrically arranged. The tops of the four first bevel gears (204) are meshed with the same second bevel gear (205). The top of the second bevel gear (205) is fixedly connected to the bottom end of the output shaft of the drive motor (102).

3. The jewelry polishing device according to claim 2, characterized in that: The four-point support clamping rotary drive assembly includes four spiral frames (3), which are fixedly connected to the bottom of the corresponding rectangular outer tube (202). A rotating shaft (301) is rotatably embedded at the bottom of the spiral frame (3). A rotating wheel (302) is fixedly connected to the bottom end of the rotating shaft (301). The outer middle part of the rotating wheel (302) is set with a concave arc structure. The outer side of the rotating wheel (302) is covered with an anti-slip rubber sleeve. A first motor (303) is fixedly installed on the top inner wall of the spiral frame (3) on the left side. The bottom end of the output shaft of the first motor (303) is fixedly connected to the top end of the rotating shaft (301) on the left side. An arc-shaped polishing plate (5) is located on the right side of the four rotating wheels (302).

4. A jewelry polishing device as defined in claim 1, wherein: The transverse guide drive assembly includes a multi-stage electric telescopic rod (401) fixedly installed on the right side of the inverted U-shaped frame (1). The extended end of the multi-stage electric telescopic rod (401) extends into the inverted U-shaped frame (1) and is fixedly connected to a first electric telescopic rod (406). The extended end of the first electric telescopic rod (406) is fixedly connected to a rectangular sleeve (4). A magnet block (403) is fixedly connected to the inner wall of the right side of the rectangular sleeve (4). A rectangular iron block (501) is fixedly connected to the right side of the arc-shaped polishing plate (5). The rectangular iron block (501) is movably fitted into the rectangular sleeve (4) and attracted to the left side of the magnet block (403). The first electric telescopic rod (406) is slidably installed on the top of the base plate (101).

5. A jewelry polishing device as defined in claim 2, wherein: The rectangular guide rod (203) has a threaded hole at one end near the fixed box (2) that is threaded to the corresponding screw (206).

6. A jewelry polishing device as defined in claim 4, wherein: The top of the base plate (101) is fixedly connected to two T-shaped guide rails, and the bottom of the first electric telescopic rod (406) is fixedly connected to a slider (402). The bottom of the slider (402) has two T-shaped grooves with openings on both sides, and the T-shaped grooves are slidably connected to the corresponding T-shaped guide rails.

7. A jewelry polishing device as defined in claim 6, wherein: The bottom left side of the rectangular sleeve (4) is fixedly connected to a vertical guide tube (404), and a vertical guide rod (405) fixedly connected to the top of the slider (402) is slidably sleeved inside the vertical guide tube (404).

8. A jewelry polishing device as defined in claim 7, wherein: Rectangular clearance holes are provided on both sides of the inner wall of the inverted U-shaped frame (1). The rectangular outer tubes (202) on both sides are located in the corresponding rectangular clearance holes and do not contact their inner walls.

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