A jewelry manufacturing process that imitates peacock feather

Abstract

The application provides a jewelry manufacturing process imitating bird's-eye gold embroidery, which comprises the following steps: constructing a three-dimensional model of the jewelry to be manufactured in modeling software according to the size of the jewelry to be manufactured and the bird's-eye gold embroidery texture imitated by the jewelry to be manufactured; filling the 3D printing device with wax-containing resin, starting the 3D printing device after setting the printing parameters, and finally solidifying the entity model of the three-dimensional model by layer-by-layer stacking of the wax-containing resin sprayed out by the 3D printing device; completely immersing the entity model in plaster liquid to make a plaster mold; heating the plaster mold to 730 DEG C-750 DEG C, and simultaneously performing vacuumizing operation on the inside of the plaster mold under a casting pressure of 0.28 MPa-0.36 MPa, so that a negative pressure environment is formed in the inside of the plaster mold, and the metal liquid is cast into the heated plaster mold, and the jewelry rough cast is obtained after the metal liquid solidifies; continuously spraying quartz sand with a mesh size of 150-200 on the surface of the jewelry rough cast. Compared with the prior art, the process has high processing efficiency and the jewelry manufactured has a visual effect closer to that of real bird's-eye gold embroidery.

Description

Technical Field

[0001] This application relates to the field of jewelry processing technology, and in particular to a jewelry manufacturing process that imitates peacock gold embroidery. Background Technology

[0002] Sparrow feather embroidery is an intangible cultural heritage embroidery technique. Its characteristic is that the shape of sparrow feathers is embroidered with gold thread. The finished product has a relief feel. Under light, the gold thread produces a shimmering reflection effect as the light flows, which has a strong aesthetic appeal.

[0003] Based on this, some metal jewelry manufacturers use a casting method combined with wire drawing or engraving techniques to create metal jewelry with a surface resembling gold thread, thus simulating the appearance of gold embroidery. Specifically, the craftsman first makes a model of the jewelry out of wax, then wraps it in plaster. After heating, the wax melts away, leaving a hollow plaster mold. Molten metal is then poured into the plaster mold, and after cooling, the plaster mold is removed to obtain the rough metal jewelry blank. Finally, the craftsman uses a wire drawing board or sandpaper to repeatedly rub the surface of the blank in a predetermined direction to form a set of lines, giving it a silky effect (wire drawing). Alternatively, the craftsman uses a chisel and hammer to carve the surface of the blank line by line, forming lines with a certain depth and three-dimensionality.

[0004] However, in the aforementioned processes, both wire drawing and engraving rely on skilled craftsmen. Since the surfaces of jewelry are small and thin, craftsmen apply relatively small forces with each stroke to avoid damaging the main structure, resulting in long processing times, low production efficiency, and often shallow lines. Therefore, using these processes to manufacture jewelry with a similar appearance to peacock gold embroidery is inefficient and produces jewelry with poor layering, failing to accurately simulate the look of peacock gold embroidery. Summary of the Invention

[0005] The purpose of this application is to provide a jewelry manufacturing process that imitates the peacock gold embroidery technique. This process has high production efficiency and produces jewelry with a stronger sense of layering, which can better simulate the appearance of peacock gold embroidery.

[0006] To achieve the above objectives, the jewelry manufacturing process for imitation gold embroidery provided in this application includes the following steps:

[0007] Based on the dimensions of the jewelry to be manufactured, a three-dimensional model of the jewelry is constructed in the modeling software. Each surface of the three-dimensional model is a smooth surface. Multiple process surfaces are set on the surface of the three-dimensional model using the modeling software, with a height difference between two adjacent process surfaces. According to the texture direction of the imitated gold embroidery, a groove array with multiple grooves is opened on the process surfaces, and finally the construction of the three-dimensional model of the jewelry to be manufactured is completed.

[0008] The 3D printing device is filled with wax-containing resin, the printing parameters are set and the 3D printing device is started. The 3D printing device sprays out the wax-containing resin and stacks it layer by layer, and finally solidifies to form the solid model of the three-dimensional model.

[0009] The solid model is completely immersed in the plaster liquid. After the plaster liquid solidifies, it is heated to melt the solid model, and finally a plaster mold formed by the plaster liquid is obtained.

[0010] The plaster mold is heated to 730℃-750℃, and a casting pressure of 0.28MPa-0.36MPa is applied while the inside of the plaster mold is evacuated to create a negative pressure environment. Molten metal is then poured into the heated plaster mold, and the jewelry blank is obtained after the molten metal solidifies.

[0011] Use a spray gun to continuously spray 150-200 mesh quartz sand onto the surface of the jewelry blank.

[0012] Specifically, at least four process surfaces are provided, and the height difference between two adjacent process surfaces is set to 0.27mm-0.28mm.

[0013] Specifically, in the groove array, the width of each groove is set to 0.15mm-0.25mm, and the depth of each groove is set to 0.15mm-0.25mm.

[0014] Specifically, in the groove array, the spacing between two adjacent grooves is set to be the same.

[0015] Specifically, the wax-containing resin is formed by mixing a first resin and a second resin in a mass ratio of 2:1, and the effective dispersed particle size of the wax-containing resin is smaller than the effective dispersed particle size of either the first resin or the second resin.

[0016] Specifically, the printing parameters include: the slice thickness of the 3D printing device is set to 0.015 mm.

[0017] Specifically, when spraying quartz sand onto the surface of the jewelry blank, the quartz sand is first mixed with water before being sprayed together from the spray gun, and the quartz sand is carried by the water flow to wash the surface of the jewelry blank.

[0018] Specifically, the pressure of the water flow is 0.09 MPa-0.7 MPa.

[0019] Specifically, the manufacturing process of the imitation gold embroidery jewelry also includes: before pouring the molten metal into the heated plaster mold, argon gas is first introduced into the interior of the plaster mold to purge the residual air inside the plaster mold.

[0020] Specifically, the manufacturing process of the imitation gold embroidery jewelry also includes: after spraying the quartz sand onto the surface of the jewelry blank with a spray gun, using a tool with a long and thin tip, inserting the long and thin tip into the groove and driving the tool along the extension path of the groove by a driving device until each groove is fully penetrated along the extension path.

[0021] Compared to existing technologies, this application utilizes 3D printing technology to create a physical model during the plaster mold production stage, eliminating the need for manual model making by skilled workers. This saves time compared to wax model production, allowing for faster plaster mold creation. After casting, a rough jewelry blank with a simulated peacock gold embroidery texture is obtained, eliminating the need for post-processing the texture through manual wire drawing or chiseling, further improving production efficiency. Furthermore, the simulated peacock gold embroidery texture is achieved by creating multiple layers of textured surfaces on the jewelry during the modeling stage, forming a stepped, layered structure. This allows consumers to clearly perceive the jewelry's depth. Additionally, a series of grooves on these textured surfaces create a regular reflective surface, resulting in distinct layers of reflected light and shadow under light, further simulating the reflective effect of peacock gold embroidery's gold threads. Therefore, the simulated peacock gold embroidery jewelry manufacturing process provided by this application significantly improves production efficiency, produces jewelry with a stronger sense of depth, and its reflected light and shadow under light more closely resembles the reflection of real peacock gold embroidery. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 A flowchart illustrating the manufacturing process of the imitation gold embroidery jewelry provided in Embodiment 1 of this application;

[0024] Figure 2 A flowchart illustrating the manufacturing process of the imitation gold embroidery jewelry provided in Embodiment 2 of this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc. (if present), indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes such as distinguishing similar objects, and should not be construed as indicating or implying relative importance or order.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0028] Example 1

[0029] Please see Figure 1 The jewelry manufacturing process for imitation gold embroidery provided in this embodiment includes the following steps:

[0030] S1: Based on the dimensions of the jewelry to be manufactured, construct a three-dimensional model of the jewelry in the modeling software. All surfaces of the three-dimensional model are smooth. Use the modeling software to set multiple process surfaces on the surface of the three-dimensional model, with a height difference between two adjacent process surfaces. According to the texture direction of the imitating gold embroidery, create an array of grooves with multiple grooves on the process surfaces, and finally complete the construction of the three-dimensional model of the jewelry to be manufactured.

[0031] Specifically, a 3D model of the jewelry to be manufactured is constructed in modeling software (such as Rhino or Matrix, commonly used jewelry modeling software in this field). This 3D model only reflects the basic shape and outline of the jewelry, and all its surfaces are smooth without any surface textures. In other words, this is the unfinished model of the jewelry. After the 3D model is constructed, multiple process surfaces are set on its surface using the same modeling software. There is a height difference between two adjacent process surfaces, and the selectable range for this height difference is 0.27mm-0.28mm. In this embodiment, the height difference between two adjacent process surfaces is specifically set to 0.275mm, and the number of process surfaces is at least four. Each process surface is an independent surface area at a different height, and multiple process surfaces are arranged in a stepped manner on the surface of the 3D model. After the process surfaces are set, groove arrays are created on each process surface according to the direction of the gold embroidery texture being imitated. Each groove array contains multiple parallel grooves, and the spacing between two adjacent grooves is equal. The width of each groove can be selected from 0.15mm to 0.25mm, and is set to 0.2mm in this embodiment; the depth of each groove can be selected from 0.15mm to 0.25mm, and is set to 0.19mm in this embodiment. The extension direction of the groove is determined according to the direction of the gold embroidery texture. The extension direction of the grooves on different process surfaces can be the same, or they can be set to different directions according to design needs.

[0032] Through the above operations, a stepped array of grooves with consistent spacing and depth is formed on the surface of the 3D model, thus completing the construction of the 3D model of the jewelry to be manufactured. This allows for the creation of a stepped physical structure on the surface of the subsequently formed precious metal jewelry, similar to the multi-layered gold thread stacking in the peacock gold embroidery. Specifically, each layer of the process surface corresponds to a layer of gold thread on the final peacock gold embroidery, and the precise height difference of 0.275mm ensures that these gold thread layers have a clearly discernible and uniform spatial distance in the height direction, laying a solid physical foundation for the final visual layering. Furthermore, creating the groove array on the surface allows for the construction of multiple micro-reflective units of consistent size, shape, and orientation to act as reflectors for light, ensuring that the light illuminating the same process surface has a concentrated, orderly, and consistent reflection path, preventing the reflected light from becoming scattered. This results in a stronger consistency between the appearance of the finished jewelry and the peacock gold embroidery.

[0033] S2: Fill the 3D printing device with wax-containing resin, set the printing parameters, and start the 3D printing device. The 3D printing device will spray out the wax-containing resin and stack it layer by layer, and finally solidify it to form a three-dimensional solid model.

[0034] Specifically, this step uses a wax-containing resin as the 3D printing material. This wax-containing resin is a mixture of a first resin and a second resin in a 2:1 mass ratio. Both resins can be existing wax-containing photosensitive resins used for 3D printing of jewelry. After mixing the two resins in a 2:1 mass ratio, the effective dispersed particle size of the mixed resin is smaller than that of either the first or second resin alone. This means the mixed resin system has a finer dispersion and lower viscosity than either single component, thus meeting the requirements for ultra-thin printing layers and achieving fine groove structures. After filling the 3D printing device with the mixed wax-containing resin, the slice thickness is set to 0.015 mm. Upon starting the 3D printing device, the wax-containing resin is ejected and stacked layer by layer, eventually solidifying to form a solid model completely consistent with the 3D model data. The surface of this solid model has stepped process surfaces and groove arrays corresponding to the 3D model data. In this embodiment, an existing 3D printer that meets the requirements can be used.

[0035] The above operations make the sense of layering between two adjacent craft surfaces more obvious to consumers, and the flatness of the craft surfaces themselves is also excellent, which can more clearly reflect the distinct layers of the jewelry.

[0036] S3: Immerse the solid model completely in the plaster liquid, wait for the plaster liquid to solidify, and then heat it to melt away the solid model, finally obtaining a plaster mold formed by the plaster liquid.

[0037] Specifically, the 3D-printed solid model is completely immersed in molten plaster. The molten plaster is made by mixing plaster powder specifically for jewelry casting with water in a specific ratio. During immersion, the solid model, along with its wax tree base, is placed into a sleeve, and then the prepared plaster slurry is slowly poured along the inner wall of the sleeve until the solid model is completely submerged. The pouring speed should be kept uniform during the process to avoid impacting the solid model and causing deformation or damage.

[0038] After the plaster liquid has completely solidified, the plaster block containing the solid model is placed into a heating device for heat treatment. The purpose of the heat treatment is to melt, vaporize, and expel the solid model inside the plaster block, thereby forming a cavity inside the plaster block that perfectly matches the shape of the solid model. When the solid model is completely melted away, the interior of the plaster mold formed by the plaster liquid has raised textures corresponding to the groove array on the surface of the solid model; that is, the inner wall of the plaster mold presents a raised structure that complements the groove array of the three-dimensional model.

[0039] S4: Heat the plaster mold to 730℃-750℃ and, under a casting pressure of 0.28MPa-0.36MPa, simultaneously perform a vacuum operation inside the plaster mold to create a negative pressure environment inside the plaster mold. Pour the molten metal into the heated plaster mold, and after the molten metal solidifies, you will obtain a rough jewelry blank.

[0040] Specifically, the prepared plaster mold is placed in a baking furnace and heated to 730℃-750℃. At this temperature, any carbonaceous or organic residues remaining on the inner wall of the plaster mold fully volatilize, providing a clean cavity environment for the filling of the molten metal.

[0041] The precious metal is heated and melted in a crucible to form a molten metal. The melting temperature is controlled between 1200℃ and 1230℃. At this temperature, the molten metal has sufficient fluidity to be smoothly filled into the plaster mold.

[0042] Before casting, argon gas is introduced into the cavity containing the plaster mold to purge any air, ensuring the casting process is conducted under an argon protective atmosphere. Then, at a casting pressure of 0.28 MPa-0.36 MPa, a casting machine is used to pour the molten metal into the heated plaster mold. During the casting process, the vacuum system of the casting machine continuously evacuates the interior of the plaster mold, maintaining a negative pressure environment inside.

[0043] More specifically, during the casting process, a casting pressure of 0.28MPa-0.36MPa drives the molten metal to rapidly fill the mold cavity. Negative pressure inside the cavity generates an attractive force, helping to expel residual gases and guiding the molten metal to fill more quickly. An argon protective atmosphere keeps the molten metal pure and prevents oxidation during filling, thus maintaining high fluidity. These three conditions work synergistically to ensure the molten metal completely and quickly fills every detail of the plaster model cavity, including the 0.2mm wide and 0.19mm deep grooves corresponding to the raised tips, effectively reducing the occurrence of gold float defects.

[0044] After the molten metal has completely solidified in the plaster mold, the plaster block is removed, cooled, and cleaned to obtain a rough jewelry blank. The surface of the obtained rough jewelry blank has clear groove patterns, and the amount of gold flecks and burrs is significantly less than in traditional casting methods.

[0045] S5: Use a spray gun to continuously spray 150-200 mesh quartz sand onto the surface of the jewelry blank.

[0046] Specifically, during sandblasting, quartz sand is first mixed with water to form a sand-water mixture, which is then sprayed together from the spray gun. The water pressure is set to 0.09MPa-0.7MPa. Under this pressure, the water carries the quartz sand and washes over the surface of the rough jewelry blank. In this way, the quartz sand particles, carried by the water flow, impact the metal surface at a lower impact velocity than in dry sandblasting. The water layer surrounding the quartz sand acts as a buffer, changing the impact mode of the sand particles from rigid cutting to flexible abrasion. At the same time, the high-speed water flow has a strong chip-carrying capacity, which can promptly wash away the metal debris generated by the impact, preventing the detached debris from repeatedly rolling on the surface and causing secondary scratches. Therefore, this step imparts a bright and finely textured feel to the metal surface without creating scratches or chips on the edges of the fine grooves, ensuring the integrity and clarity of the imitation gold embroidery texture.

[0047] After the aforementioned sandblasting process, the surface of the jewelry blank, except for the interior of the grooves, can be treated into a uniform microscopic matte finish while preserving all the fine structural details. This matte finish produces soft diffuse reflection, creating a striking contrast of light and shadow with the regular specular reflection produced inside the grooves. This greatly enhances the visual contrast between each crafted surface and between different crafted surfaces, making the layered, stepped structure more easily visible to the naked eye.

[0048] Example 2

[0049] The difference between this embodiment and Embodiment 1 is that: after step S5, it also has:

[0050] S6: After spraying quartz sand onto the surface of the jewelry blank with a spray gun, use a tool with a long, thin tip to insert the tip into the groove and drive the tool along the extension path of the groove until each groove is fully penetrated along the extension path.

[0051] Specifically, in this embodiment, a robotic arm is used as a driving device to drive the cutting tool to move along the extension path of the groove. The slender tip of the cutting tool is used to scrape the inner wall and bottom of the groove to remove the tiny burrs or floating gold particles remaining in the groove until each groove is fully connected along its extension path.

[0052] In this step, the size of the cutting tool is adapted to the width of the groove, allowing the tool tip to penetrate the groove without damaging the process surfaces on both sides. The control parameters of the drive device can be preset or adjusted in real time according to the groove size and residue conditions to ensure consistent finishing accuracy.

[0053] The imitation gold embroidery jewelry manufactured using the above-described process features a surface array of grooves with uniform spacing, depth, and at least four layers. The various surfaces are distributed at different heights, forming a stepped structure. The grooves on each surface are parallel, evenly spaced, and precisely sized. When light shines on the jewelry surface, the grooves on different layers produce independent reflections, and the varying heights of these reflecting surfaces create overlapping vertical light layers. Meanwhile, the uniform spacing and depth of the grooves on the same surface ensure a unified direction of reflected light. The stepped structure of multiple surfaces creates a parallax effect in space. These three elements work together to give the jewelry a layered, shimmering visual effect, realistically replicating the three-dimensional embroidery look of gold embroidery on precious metal.

[0054] Meanwhile, because the entire process chain, from modeling to casting, is digitally and parametrically controlled, there is no need for manual wax carving and individual chiseling, significantly reducing the processing time for a single piece of jewelry. Furthermore, the addition of vacuuming and argon gas as a protective gas during the casting process effectively reduces gold floating defects, lowering rework and scrap rates. In addition, this standardized process ensures product consistency, making it suitable for the mass industrial production of imitation gold-embroidered precious metal jewelry.

[0055] 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A jewelry manufacturing process imitating peacock gold embroidery, characterized in that, Includes the following steps: Based on the dimensions of the jewelry to be manufactured, a three-dimensional model of the jewelry is constructed in the modeling software. Each surface of the three-dimensional model is a smooth surface. Multiple process surfaces are set on the surface of the three-dimensional model using the modeling software, with a height difference between two adjacent process surfaces. According to the texture direction of the imitated gold embroidery, a groove array with multiple grooves is opened on the process surface, and finally the construction of the three-dimensional model of the jewelry to be manufactured is completed. The 3D printing device is filled with wax-containing resin, the printing parameters are set and the 3D printing device is started. The 3D printing device sprays out the wax-containing resin and stacks it layer by layer, and finally solidifies to form the solid model of the three-dimensional model. The solid model is completely immersed in the plaster liquid. After the plaster liquid solidifies, it is heated to melt the solid model, and finally a plaster mold formed by the plaster liquid is obtained. The plaster mold is heated to 730℃-750℃, and a casting pressure of 0.28MPa-0.36MPa is applied while the inside of the plaster mold is evacuated to create a negative pressure environment. Molten metal is then poured into the heated plaster mold, and the jewelry blank is obtained after the molten metal solidifies. Use a spray gun to continuously spray 150-200 mesh quartz sand onto the surface of the jewelry blank.

2. The jewelry manufacturing process for imitation gold embroidery according to claim 1, characterized in that, The process surface is provided with at least four, and the height difference between two adjacent process surfaces is set to 0.27mm-0.28mm.

3. The jewelry manufacturing process for imitation gold embroidery according to claim 1, characterized in that, In the groove array, the width of each groove is set to 0.15mm-0.25mm, and the depth of each groove is set to 0.15mm-0.25mm.

4. The jewelry manufacturing process for imitation gold embroidery according to claim 1, characterized in that, In the groove array, the spacing between two adjacent grooves is set to be the same.

5. The jewelry manufacturing process for imitation gold embroidery according to claim 1, characterized in that, The wax-containing resin is formed by mixing the first resin and the second resin in a mass ratio of 2:1, and the effective dispersed particle size of the wax-containing resin is smaller than the effective dispersed particle size of either the first resin or the second resin.

6. The jewelry manufacturing process for imitation gold embroidery according to claim 5, characterized in that, The printing parameters include: the slice thickness of the 3D printing device is set to 0.015 mm.

7. The jewelry manufacturing process for imitation gold embroidery according to claim 1, characterized in that, When spraying quartz sand onto the surface of the jewelry blank, the quartz sand is first mixed with water before being sprayed together from the spray gun. The quartz sand is carried by the water flow and washes the surface of the jewelry blank.

8. The jewelry manufacturing process for imitation gold embroidery according to claim 7, characterized in that, The pressure of the water flow is 0.09MPa-0.7MPa.

9. The jewelry manufacturing process for imitation gold embroidery according to claim 1, characterized in that, The jewelry manufacturing process for the imitation gold embroidery also includes: Before pouring the molten metal into the heated plaster mold, argon gas is introduced into the interior of the plaster mold to purge any residual air inside.

10. The jewelry manufacturing process for imitation gold embroidery according to claim 1, characterized in that, The jewelry manufacturing process for the imitation gold embroidery also includes: After spraying the quartz sand onto the surface of the jewelry blank using a spray gun, a tool with a long, thin tip is inserted into the groove and driven by a drive device to move the tool along the extension path of the groove until each groove is fully penetrated along the extension path.

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