Processing technology of gold ornament

Abstract

The invention relates to the technical field of precious metal ornament processing, in particular to a gold ornament processing technology which comprises the following steps of semi-finished product manufacturing, coarse grinding, fine grinding, assembling and steam spraying. In the fine grinding process, a specially-made hollowed-out protection ball and a velvet spraying device are adopted, velvet sand is driven by airflow to efficiently grind a semi-finished product, and meanwhile the surface quality of the semi-finished product is protected. In addition, the gas circulation device and the storage cavity structure are optimized, and the grinding efficiency and uniformity are improved. The effect of improving the machining precision and the surface smoothness of the gold ornament is achieved, meanwhile, abrasion is effectively reduced, and the product yield and the machining efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of precious metal jewelry processing technology, and in particular to a processing technology for gold jewelry. Background Art

[0002] Gold jewelry processing is a crucial component of the jewelry manufacturing industry. As consumers' demands for the appearance and quality of jewelry continue to rise, it plays a vital role in enhancing product added value. Exquisite craftsmanship not only satisfies consumers' pursuit of aesthetics but also extends the lifespan of jewelry, thereby driving the sustainable development of the jewelry industry. Simultaneously, continuous advancements in gold jewelry processing technology have spurred innovation in related equipment and technologies, injecting new vitality into the entire industry.

[0003] In existing technologies, various processing methods are typically employed to improve the surface finish and aesthetics of gold jewelry. For example, a traditional tumbler grinder is used for rough grinding, utilizing the friction between the grinding balls and the semi-finished product to remove surface burrs; or manual polishing is used, where each semi-finished product is individually refined to achieve the desired surface effect.

[0004] While the aforementioned traditional processing methods can improve the surface quality of jewelry to some extent, it is difficult to balance efficiency and precision during mass production. In particular, when fine grinding semi-finished products, gold is soft and easily deformed by collisions. Due to the lack of effective protective measures, the surface of the jewelry is easily damaged or deformed, thus affecting the quality of the final product. Therefore, how to improve processing quality while ensuring processing efficiency and effectively avoid damage to jewelry during fine grinding has become an urgent technical problem to be solved. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this application provides a processing technology for gold jewelry, which can use high-speed airflow to process multiple gold semi-finished products, greatly improving processing efficiency and enhancing the surface processing quality of the jewelry, effectively preventing damage to the jewelry during the fine grinding process.

[0006] This application is achieved through the following technical solution: A processing technique for gold jewelry includes the following steps: Step 1: Semi-finished product production. Make a mold according to the blueprint, and pour the molten gold liquid into the mold to obtain the semi-finished product. Step 2, coarse grinding: Place the semi-finished product into a drum grinder for grinding, using grinding balls with a particle size of 0.5-3mm; Step 3, fine grinding: Place the single semi-finished product after coarse grinding into a hollow protective ball, and place several hollow protective balls containing semi-finished products into a spun powder spraying device; the spun powder spraying device uses airflow to drive spun powder to collide with the semi-finished products, so as to achieve the action of grinding several semi-finished products. Step four: Assembly. Assemble the semi-finished products to create the finished product. Step 5: Steam cleaning to clean the surface of the finished product; By adopting the above technical solutions, efficient processing of gold jewelry is achieved. Specifically, in the semi-finished product manufacturing step, molds are made according to the drawings and molten gold is poured in, ensuring the precise shaping of the semi-finished product and improving processing accuracy and consistency. In the rough grinding step, grinding balls with a particle size of 0.5 to 3 mm are used for roller grinding, which effectively removes large defects on the surface of the semi-finished product and avoids material waste caused by over-grinding. In the fine grinding step, the semi-finished product is placed in a hollow protective sphere and polished using an airflow-driven abrasive spraying device. This not only improves grinding efficiency but also ensures the smoothness and uniformity of the semi-finished product's surface, while reducing the risk of damage during the grinding process. In the assembly step, the finely ground semi-finished product components are assembled, ensuring the overall structural stability and aesthetics of the finished product. The steam cleaning step effectively removes residues from the finished product's surface, improving its cleanliness and gloss. If necessary, the steam-cleaned finished product can be immersed in an organosilicon compound protective agent to enhance its oxidation and corrosion resistance, extending its service life. This process effectively protects the semi-finished product by using a hollow protective sphere and an improved abrasive spraying device, avoiding surface damage caused by direct impact. At the same time, by optimizing the airflow path and abrasive distribution, grinding efficiency and quality are improved, significantly enhancing the surface smoothness and aesthetics of the jewelry.

[0007] Optionally, after completing step three, the surface of each semi-finished part after fine grinding is first brushed, and then the assembly process in step four is carried out.

[0008] By adopting the above technical solution, the surface of the semi-finished parts can be brushed after the fine grinding process, resulting in a uniform texture on the surface of the semi-finished parts and enhancing the appearance and texture of the gold jewelry. At the same time, the surface brushing process can increase the roughness of the surface of the semi-finished parts, thereby improving the bonding strength between the components in the subsequent assembly process and enhancing the structural stability of the finished product.

[0009] Optionally, the hollow protective sphere is composed of two hemispheres, with a space in the middle for holding semi-finished products, and the inner wall of the hollow protective sphere is provided with an elastic layer.

[0010] By adopting the above technical solution, effective protection of semi-finished products during the fine grinding process is achieved. Specifically, the hollow protective ball is designed as a two-hemisphere docking structure, which facilitates the placement and removal of semi-finished products and improves operational convenience. An accommodating space is set in the middle of the hollow protective ball to stably place the semi-finished products. An elastic layer is set on the inner wall of the hollow protective ball, which can buffer the impact force between the inner wall and the semi-finished products when the hollow protective ball is blown into the air and rolls, reducing the damage to the surface of the semi-finished products caused by direct collision, thereby improving the surface quality and processing precision of the products.

[0011] Optionally, the inner wall of the elastic layer is provided with a frosted layer.

[0012] By adopting the above technical solution, effective protection and efficient polishing of semi-finished products are achieved during the fine grinding process. After the inner wall of the elastic layer is set with a frosted layer, the uniform polishing effect on the surface of the semi-finished product can be further enhanced during the fine grinding process. At the same time, the direct collision between the semi-finished product and the inner wall of the hollow protective ball is reduced, the risk of damage is reduced, thereby improving the smoothness of the surface of gold jewelry and the yield of processed products.

[0013] Optionally, the fluff spraying device includes a storage cavity, in which an upper partition and a lower partition are provided in the middle. The upper and lower partitions form a storage space for placing the hollow protective ball. A circulation pipe is connected between the air outlet at the top and the air inlet at the bottom of the storage cavity. A gas flow device is provided on the circulation pipe to generate airflow, which causes the fluff to enter from the bottom of the storage cavity, impact the hollow protective ball, and drive the hollow protective ball to tumble in the storage space.

[0014] By adopting the above technical solution, the upper and lower partitions in the storage cavity effectively divide the space into dedicated areas for placing the perforated protective balls, ensuring that the semi-finished products are stably placed and evenly stressed during the fine grinding process. The combined use of the top circulation pipe and gas flow device allows airflow to enter from the bottom of the storage cavity, driving the abrasive particles to efficiently impact the semi-finished products within the perforated protective balls, achieving fine grinding of the semi-finished product surface. Simultaneously, the airflow also drives the perforated protective balls to tumble within the storage space, thereby improving grinding efficiency and uniformity, reducing manual intervention, and enhancing processing quality.

[0015] Optionally, the gas flow device is an axial flow fan installed in the circulation pipeline.

[0016] By adopting the above technical solution and using an axial flow fan as a gas flow device, a stable airflow can be generated, which can make the sand evenly distributed in the storage cavity and effectively impact the semi-finished product in the hollow protective ball, thereby improving the uniformity and efficiency of grinding. In addition, the axial flow fan has a simple structure, low cost, and is easy to maintain and replace, which helps to reduce the implementation cost of the overall processing technology.

[0017] Optionally, the gas flow device is a compressed air pipe installed at the lower end of the circulation pipe, and a cyclone is provided at the air outlet of the storage cavity. The side wall of the cyclone is provided with an air inlet pipe arranged in an oblique direction, the bottom is provided with a discharge pipe with a conical structure, and the top center of the cyclone is provided with an exhaust pipe. The air inlet of the exhaust pipe extends into the cavity of the cyclone. The air outlet of the storage cavity is connected to the air inlet pipe of the cyclone, and the air inlet of the circulation pipe is connected to the discharge pipe of the cyclone.

[0018] By adopting the above technical solution, the compressed air pipeline is set at the lower end of the circulation pipeline and connected to the external high-pressure air pipeline, which can provide a stable high-pressure airflow, driving the abrasive to impact the semi-finished product inside the hollowed-out protective ball at a high speed, thereby improving grinding efficiency and quality. The cyclone further optimizes the airflow circulation. The obliquely cut air inlet pipe on its side wall guides the airflow to form a vortex. Using centrifugal force, the abrasive is separated, allowing it to be fully dispersed in the cylinder cavity and re-enter the storage cavity, thus making full use of the abrasive and reducing waste. The conical structure design of the discharge pipe helps the abrasive to be discharged smoothly and avoids blockage. The air inlet of the exhaust pipe extends into the cyclone cavity to ensure effective airflow separation and achieve efficient recycling of abrasive and gas.

[0019] Optionally, a connecting pipe is provided between the air outlet of the exhaust pipe and the air inlet of the compressed air pipe, and an axial flow fan is provided on the connecting pipe.

[0020] By adopting the above technical solution, the exhaust outlet of the vent pipe is connected to the inlet of the compressed air pipe through a connecting pipe, and an axial flow fan is installed on the connecting pipe. This effectively recovers the residual pressure in the gas discharged from the cyclone separator, improves the utilization rate of airflow, and reduces energy consumption. Compared with directly arranging the axial flow fan on the circulation pipe, this design optimizes the working environment of the axial flow fan, avoids contact between the axial flow fan and the abrasive, ensures the stability of the axial flow fan's working state, and extends the service life of the axial flow fan. At the same time, the installation of the axial flow fan can further regulate the pressure and flow rate of the airflow, ensuring that the movement of the abrasive in the storage cavity is more uniform and stable, thereby improving the polishing effect on the semi-finished product.

[0021] Optionally, the bottom of the storage cavity is provided with a conical slope; the upper and lower partitions are arc-shaped structures, with the bottom of the arc surface of the upper partition arranged near the air inlet of the storage cavity and the bottom of the arc surface of the upper partition arranged near the air outlet of the storage cavity.

[0022] By adopting the above technical solutions, the conical slope effectively guides the flow direction of airflow and abrasive within the storage cavity, allowing the airflow to more concentratedly impact the hollow protective ball, thereby improving the grinding efficiency and uniformity of the abrasive on the semi-finished product. Furthermore, the conical slope helps reduce abrasive accumulation at the bottom of the storage cavity, ensuring the abrasive content in the airflow, improving the grinding effect, and avoiding uneven grinding caused by abrasive accumulation. The arc-shaped design of the upper and lower partitions optimizes the airflow path within the storage cavity, allowing for smoother entry and exit, thus improving the grinding efficiency of the abrasive on the semi-finished product inside the hollow protective ball. The arc-shaped bottom of the upper partition, positioned near the air inlet of the storage cavity, helps the airflow to be more evenly introduced into the storage space, enhancing the impact force of the airflow on the hollow protective ball. The arc-shaped bottom of the lower partition, positioned near the air outlet of the storage cavity, helps reduce airflow resistance during exhaust, preventing airflow turbulence from affecting the grinding effect.

[0023] Optionally, the upper and lower partitions are rotatably connected in the storage cavity, and the upper and lower partitions can rotate under the action of airflow.

[0024] By adopting the above technical solution, the upper and lower partitions are rotatably connected in the storage cavity, allowing them to rotate under the action of airflow. This design effectively improves the uniformity of collision between the abrasive and the semi-finished product, avoiding the grinding blind spots caused by the fixed partitions, thereby improving the smoothness and gloss consistency of the semi-finished product surface during the fine grinding process. Furthermore, the rotational motion helps optimize the tumbling trajectory of the hollowed-out protective balls within the storage space, further improving grinding efficiency and quality.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. This application uses grinding balls with a particle size of 0.5 to 3 mm for coarse grinding, which can efficiently remove burrs from the surface of semi-finished products, improve the initial surface finish, and ensure processing efficiency. 2. This application utilizes a velvet spraying device with a hollowed-out protective ball to finely grind semi-finished products, effectively avoiding deformation or damage to gold jewelry caused by collisions during the fine grinding process, and significantly improving processing precision and product quality; 3. This application further cleans the surface of the jewelry and enhances its antioxidant properties through steam spraying and soaking in protective agents, thereby extending the service life of the jewelry and meeting consumers' needs for aesthetics and durability. Attached Figure Description

[0026] Figure 1 This is a flowchart of the processing technology for gold jewelry in Example 1; Figure 2 This is a three-dimensional structural diagram of the hollowed-out protective sphere described in Embodiment 1; Figure 3 This is a three-dimensional structural diagram of the hemisphere described in Embodiment 1; Figure 4 This is a cross-sectional view of the hollowed-out protective sphere described in Embodiment 1; Figure 5 This is a schematic diagram of the fabric spraying device described in Embodiment 1; Figure 6 This is a flowchart of the processing technology for the gold jewelry in Example 2; Figure 7 This is a schematic diagram of the fabric spraying device described in Embodiment 3; Figure 8 This is a top view of the conveying cyclone in Embodiment 3; Figure 9 This is a schematic diagram of the compressed air pipeline described in Embodiment 3; Figure 10 This is a schematic diagram of the fabric spraying device described in Embodiment 4; Figure 11 This is a schematic diagram of the fabric spraying device described in Embodiment 5; Figure 12 This is a front view schematic diagram of the upper and lower partition nets described in Embodiment 5; Figure 13 This is a schematic diagram of the three-dimensional structure of the upper and lower partition nets described in Embodiment 5; In the diagram: 1. Hollowed-out protective sphere; 11. Hemisphere; 12. Elastic layer; 13. Frosted layer; 2. Semi-finished product; 3. Storage cavity; 31. Support rod; 32. Bearing seat; 4. Upper partition net; 41. Connecting rod; 42. Impeller; 5. Lower partition net; 6. Circulation pipe; 7. Axial flow fan; 8. Cyclone; 81. Air inlet pipe; 82. Discharge pipe; 83. Exhaust pipe; 84. Filter screen; 9. Compressed air pipe; 10. Connecting pipe. Detailed Implementation

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

[0028] Example 1 Reference Figure 1 This application discloses a processing technology for gold jewelry, specifically including the following steps: Step 1: Making semi-finished product 2. Make a mold according to the drawing, and pour the molten gold liquid into the mold to make semi-finished product 2. Step 2, coarse grinding: put the semi-finished product 2 into a drum grinder for grinding, using grinding balls with a particle size of 0.5-3mm; Step 3, fine grinding: Place the single semi-finished product 2 after coarse grinding into the hollow protective ball 1, and place several hollow protective balls 1 containing semi-finished products 2 into the spun powder device; the spun powder device uses airflow to drive the spun powder to collide with the semi-finished products 2, so as to achieve the action of grinding several semi-finished products 2. Step 4: Assembly. Assemble the semi-finished products 2 to produce the finished product. Step 5: Steam cleaning to clean the surface of the finished product; The fine grinding step is the core part of this process. It involves placing a single semi-finished product 2, which has been coarsely ground, into a hollow protective ball 1, and then placing several hollow protective balls 1 containing the semi-finished product 2 into a brush spraying device to complete the grinding action.

[0029] Specifically, refer to Figures 2-4 The hollow protective ball 1 is composed of two hemispherical balls 11 connected by threads. A space for holding the semi-finished product 2 is provided in the middle. It can be made of metal or hard plastic; if metal is used, aluminum alloy is preferred due to its structural strength, light weight, and ease of tumbling by airflow. To further enhance the durability of the protective ball, a protective coating can be added to its outer wall. This coating can be made of ceramic or alumina materials, which have excellent wear resistance and corrosion resistance, effectively extending the service life of the protective ball. The outer wall of the hollow protective ball 1 has multiple evenly distributed through holes with a diameter of 0.5–2 mm. The through holes can be circular, elliptical, or square. The through hole design facilitates the smooth entry of airflow and abrasive into the protective ball, ensuring that the surface of the semi-finished product 2 can fully contact the abrasive, thereby improving the polishing effect.

[0030] Reference Figures 2-4 To reduce direct collisions between the semi-finished product 2 and the inner wall of the protective ball, thereby preventing damage to the surface of the semi-finished product 2, the inner wall of the hollow protective ball 1 is provided with an elastic layer 12. The elastic layer 12 can be made of silicone or rubber, both of which have good elasticity and wear resistance. In addition, the inner wall of the elastic layer 12 is also provided with a sanding layer 13. The sanding layer 13 can further buffer the impact of the sanding material carried by the airflow on the semi-finished product 2, while ensuring that the sanding material can be evenly applied to the surface of the semi-finished product 2, thereby achieving an efficient polishing effect.

[0031] Reference Figure 5The spun sand device includes a storage cavity 3. An upper partition 4 and a lower partition 5 are fixed to the middle of the storage cavity 3 by welding. The upper partition 4 and the lower partition 5 form a storage space for placing the hollow protective ball 1. The bottom of the storage cavity 3 is provided with a conical slope. The conical slope design helps the spun sand to enter the bottom of the storage cavity 3 smoothly and avoids the spun sand from accumulating in the corners of the storage cavity 3, thereby ensuring the uniformity of the spun sand carried by the airflow. In addition, the upper partition 4 and the lower partition 5 have an arc-shaped structure. The bottom of the arc surface of the upper partition 4 is arranged close to the air inlet of the storage cavity 3, and the bottom of the arc surface of the lower partition 5 is arranged close to the air outlet of the storage cavity 3. This design can guide the airflow smoothly, reduce airflow resistance, and further improve the uniformity of the spun sand distribution.

[0032] Reference Figure 5 A circulation pipe 6 is provided between the air outlet at the top and the air inlet at the bottom of the storage cavity 3, and a gas flow device is provided on the circulation pipe 6. The gas flow device is used to generate airflow, so that the airflow carries the sand into the storage cavity 3 from the bottom, impacts the hollow protective ball 1, and drives the hollow protective ball 1 to roll in the storage space. In this way, the sand can be evenly contacted on the surface of the semi-finished product 2, avoiding the problem of local over-grinding or uneven grinding. In this embodiment, the gas flow device is implemented by an axial flow fan 7. The axial flow fan 7 is installed on the circulation pipe 6, which can generate a stable airflow to ensure that the sand is evenly distributed under the drive of the airflow.

[0033] The implementation principle of this embodiment is as follows: by setting a hollow protective ball 1 and improving the abrasive spraying device, this process effectively protects the semi-finished product 2 during the fine grinding stage, avoiding surface damage caused by direct collision. At the same time, by optimizing the airflow path and abrasive distribution method, the grinding efficiency and quality are improved, significantly enhancing the surface smoothness and aesthetics of the jewelry.

[0034] Example 2 Reference Figure 6 The difference between this embodiment and Embodiment 1 is that a surface wire drawing process is added after the fine grinding step. The surface wire drawing process uses a specific wire drawing tool to treat the surface of the semi-finished product 2 to form a unique texture effect. The wire drawing tool can be a wire brush or a diamond grinding wheel. Both of these tools can effectively remove the tiny burrs remaining on the surface of the semi-finished product 2, while giving the surface a uniform texture.

[0035] The specific operation of the surface wire drawing process is as follows: First, fix the finely ground semi-finished product 2 on a special fixture to ensure that the semi-finished product 2 will not shift during the wire drawing process; then, start the wire drawing tool and make it contact the surface of the semi-finished product 2 at an appropriate speed and pressure to perform the wire drawing process; the moving speed of the wire drawing tool can be adjusted according to the shape and size of the semi-finished product 2, usually controlled within the range of 100~300 revolutions per minute to ensure the uniformity of the wire drawing effect. It should be noted that for personalized designs, wire drawing can also be done manually; finally, check whether the texture of the surface of the semi-finished product 2 meets the design requirements. If necessary, the wire drawing operation can be repeated to achieve the ideal effect.

[0036] The implementation principle of this embodiment is as follows: adding a surface wire drawing process after the fine grinding step can not only further improve the quality of the jewelry surface, but also give the jewelry a unique visual effect and enhance the added value of the product; by combining the fine grinding and wire drawing processes, this process achieves all-round processing of semi-finished product 2, which not only ensures the surface smoothness, but also meets consumers' demand for personalized design, providing strong technical support for the high-end market of gold jewelry.

[0037] Example 3 Reference Figures 7-9 The difference between this embodiment and embodiment one is that the bottom pipe of the circulation pipe 6 is arranged horizontally, and the gas flow device is implemented by compressed air pipe 9. The compressed air pipe 9 is set on the side wall of the horizontal pipe at the bottom of the circulation pipe 6. By introducing high-pressure air from the outside, an airflow is formed in the device, which drives the sand in the circulation pipe 6 to collide with the semi-finished product 2, so as to realize the grinding action of several semi-finished products 2. The nozzle at the air outlet of the compressed air pipe 9 is arranged obliquely downward to reduce the accumulation of sand in the bottom pipe. The air outlet of the storage cavity 3 is provided with a cyclone 8. The side wall of the cyclone 8 is provided with an air inlet pipe 81 arranged in an oblique direction, and the bottom is provided with a discharge pipe 82 with a conical structure. The top middle of the cyclone 8 is provided with an exhaust pipe 83. The air outlet of the exhaust pipe 83 is provided with a filter screen 84. The air inlet extends into the cylinder cavity of the cyclone 8. The air outlet of the storage cavity 3 is connected to the air inlet pipe 81 of the cyclone 8, and the air inlet of the circulation pipe 6 is connected to the discharge pipe 82 of the cyclone 8.

[0038] The implementation principle of this application embodiment is as follows: The compressed air pipe 9 is set at the lower end of the circulation pipe 6 and is connected to the external high-pressure air pipe, which can provide a stable high-pressure airflow, driving the sand to impact the semi-finished product 2 inside the hollow protective ball 1 at a high speed, thereby improving the grinding efficiency and quality; the setting of the cyclone 8 further optimizes the airflow circulation, and the obliquely cut air inlet pipe 81 on its side wall guides the airflow to form a vortex. Using centrifugal force, the sand is separated, so that the sand is fully dispersed in the cylinder cavity and re-enters the storage cavity 3, realizing the full utilization of sand and reducing sand waste; the conical structure design of the discharge pipe 82 helps the sand to be discharged smoothly and avoids blockage; the air inlet of the exhaust pipe 83 extends into the cylinder cavity of the cyclone 8 to ensure effective airflow separation and realize the efficient recycling of sand and gas.

[0039] Example 4 Reference Figure 10 The difference between this embodiment and embodiment three is that a connecting pipe 10 is provided between the air outlet of the exhaust pipe 83 and the air inlet of the compressed air pipe 9, and an axial flow fan 7 is provided on the connecting pipe 10; the function of the axial flow fan 7 is to reintroduce the air discharged from the exhaust pipe 83 into the compressed air pipe 9 to realize the circulation of airflow and thus improve energy utilization.

[0040] In addition, the inner wall of the connecting pipe 10 is provided with a guide plate, which is arranged in a spiral shape to guide the airflow in a specific direction and reduce the occurrence of airflow turbulence. The guide plate can be made of stainless steel or aluminum alloy, which have good strength and corrosion resistance and can adapt to complex airflow environments. In this way, not only can the stability of the airflow be improved, but the uniformity of the distribution of the sand can also be further improved.

[0041] The implementation principle of this embodiment is as follows: the air outlet of the exhaust pipe 83 is connected to the air inlet of the compressed air pipe 9 through the connecting pipe 10, and an axial flow fan 7 is installed on the connecting pipe 10. This can effectively recover the residual pressure in the gas discharged from the cyclone 8, improve the utilization rate of airflow, and reduce energy consumption. Compared with directly arranging the axial flow fan 7 on the circulation pipe 6, this design can optimize the working environment of the axial flow fan 7, avoid contact between the axial flow fan 7 and the abrasive, ensure the stability of the working state of the axial flow fan 7, and extend the service life of the axial flow fan 7. At the same time, the setting of the axial flow fan 7 can further regulate the pressure and flow rate of the airflow, ensuring that the movement of the abrasive in the storage cavity 3 is more uniform and stable, thereby improving the polishing effect on the semi-finished product 2.

[0042] Example 5 Reference Figures 11-13 The difference between this embodiment and embodiment four is that the upper partition 4 and the lower partition 5 are not fixed to the storage cavity 3, but are rotatably connected to the storage cavity 3, and the upper partition 4 and the lower partition 5 can rotate under the action of airflow.

[0043] Specifically, the upper partition 4 and the lower partition 5 are fixed together by connecting rods 41. The distance between adjacent connecting rods 41 facilitates the insertion of the hollow protective ball 1. The top of the upper partition 4 is fixed with a rotating shaft, and an impeller 42 is fixed on the rotating shaft. The air outlet of the storage cavity 3 is fixed with a bearing seat 32 by a support rod 31. The rotating shaft is rotatably connected to the bearing seat 32 through the bearing, so that the upper partition 4 and the lower partition 5 are rotatably connected in the storage cavity 3. When the airflow passes through the impeller 42, it can convert wind energy into rotational kinetic energy, which can drive the impeller 42 to rotate, thereby driving the upper partition 4 and the lower partition 5 to rotate. When the rotating upper partition 4 and the lower partition 5 come into contact with the hollow protective ball 1, they can drive the hollow protective ball 1 to roll, further enhancing the polishing efficiency of the hollow protective ball 1 on the semi-finished product 2.

[0044] The implementation principle of this embodiment is as follows: the upper partition 4 and the lower partition 5 are rotatably connected in the storage cavity 3, allowing them to rotate under the action of airflow. This design effectively improves the uniformity of collision between the abrasive and the semi-finished product 2, avoiding the problem of blind spots in polishing caused by the partitions being fixed, thereby improving the flatness and gloss consistency of the surface of the semi-finished product 2 in the fine polishing process. In addition, the rotational motion also helps to optimize the rolling trajectory of the hollow protective ball 1 in the storage space, further improving polishing efficiency and quality.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. A processing technique for gold jewelry, characterized in that, The specific steps include: Step 1, semi-finished product (2) production: make a mold according to the drawing, pour the molten gold liquid into the mold to make semi-finished product (2). Step 2, coarse grinding: put the semi-finished product (2) into a drum grinder for grinding, using grinding balls with a particle size of 0.5 to 3 mm; Step 3, fine grinding: Place the single semi-finished product (2) after coarse grinding into the hollow protective ball (1), and place several hollow protective balls (1) containing semi-finished products (2) into the velvet spraying device; the velvet spraying device uses airflow to drive the velvet sand to collide with the semi-finished product (2) to achieve the action of grinding several semi-finished products (2); Step 4: Assembly. Assemble the semi-finished products (2) to produce the finished product. Step 5: Steam cleaning to clean the surface of the finished product.

2. The processing technology for gold jewelry according to claim 1, characterized in that, After completing step three, the surface of each semi-finished (2) component after fine grinding is first wire-brushed, and then the assembly process of step four is carried out.

3. The processing technology for gold jewelry according to claim 1, characterized in that, The hollow protective ball (1) is composed of two hemispheres (11), with a space in the middle for holding the semi-finished product (2), and the inner wall of the hollow protective ball (1) is provided with an elastic layer (12).

4. The processing technology for gold jewelry according to claim 3, characterized in that, The inner wall of the elastic layer (12) is provided with a frosted layer (13).

5. The processing technology for gold jewelry according to claim 1, characterized in that, The fluff spraying device includes a storage cavity (3), in which an upper partition (4) and a lower partition (5) are provided in the middle. The upper partition (4) and the lower partition (5) form a storage space for placing the hollow protective ball (1). A circulation pipe (6) is connected between the air outlet at the top and the air inlet at the bottom of the storage cavity (3). A gas flow device is provided on the circulation pipe (6). The gas flow device is used to generate airflow, so that the airflow carries the fluff sand from the bottom of the storage cavity (3) into the storage cavity (3), impacts the hollow protective ball (1), and drives the hollow protective ball (1) to roll in the storage space.

6. The processing technology for gold jewelry according to claim 5, characterized in that, The gas flow device is an axial flow fan (7) installed in the circulation pipe (6).

7. The processing technology for gold jewelry according to claim 5, characterized in that, The gas flow device is a compressed air pipe (9) installed at the lower end of the circulation pipe (6), and a cyclone (8) is provided at the air outlet of the storage cavity (3). The side wall of the cyclone (8) is provided with an air inlet pipe (81) arranged in a slanted direction, and the bottom is provided with a discharge pipe (82) with a conical structure. An exhaust pipe (83) is provided at the middle of the top of the cyclone (8). The air inlet of the exhaust pipe (83) extends into the cylinder cavity of the cyclone (8). The air outlet of the storage cavity (3) is connected to the air inlet pipe (81) of the cyclone (8), and the air inlet of the circulation pipe (6) is connected to the discharge pipe (82) of the cyclone (8).

8. The processing technology for gold jewelry according to claim 7, characterized in that, A connecting pipe (10) is provided between the air outlet of the exhaust pipe (83) and the air inlet of the compressed air pipe (9), and an axial flow fan (7) is provided on the connecting pipe (10).

9. The processing technology for gold jewelry according to claim 5, characterized in that, The bottom of the storage cavity (3) is provided with a conical slope; the upper partition (4) and the lower partition (5) are arc-shaped structures, and the bottom of the arc surface of the upper partition (4) is arranged close to the air inlet of the storage cavity (3), and the bottom of the arc surface of the upper partition (4) is arranged close to the air outlet of the storage cavity (3).

10. The processing technology for gold jewelry according to claim 5, characterized in that, The upper partition (4) and the lower partition (5) are rotatably connected in the storage cavity (3), and the upper partition (4) and the lower partition (5) can rotate under the action of airflow.

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