Solderless hollow jewelry structure based on precious metal 3D printing technology

Abstract

The utility model relates to the technical field of precious metal casting, in particular to a non-welding hollow jewelry structure based on a precious metal 3D printing technology, which comprises a jewelry piece with a hollow cavity, the jewelry piece forms an inner ring inner surface and an outer ring inner surface on the inner side of the hollow cavity; wherein a hollow cavity is formed in the inner ring, a plurality of supporting columns are formed in the hollow cavity, and at least three supporting points are arranged in an effective area defined by taking the inner surface of the inner ring, the inner surface of the outer ring or any top end of the supporting columns as a base point. Meanwhile, the base point adopts one of the inner surface of the inner ring and the inner surface of the outer ring as a supporting point and is matched with the supporting column to form good support for the interior of the hollow cavity, so that the collapse problem is avoided.

Description

Technical Field

[0001] This utility model relates to the field of precious metal casting technology, and in particular to a weld-free hollow jewelry structure based on precious metal 3D printing technology. Background Technology

[0002] Traditional jewelry manufacturing processes mainly include casting, welding, and setting. Among these, welding is prone to causing structural deformation, unsightly welds, and affecting the quality of the jewelry. Furthermore, traditional jewelry is often solid, making it heavy and inconvenient to wear.

[0003] With the development of technology, 3D printing has gradually been introduced into the field of precious metal jewelry manufacturing. This technology has brought new possibilities to jewelry design, especially in terms of complex shapes and personalized designs. However, current 3D printing technology still has certain limitations in jewelry manufacturing. For example, jewelry structures made using 3D printing technology are often relatively simple, making it difficult to achieve complex hollow structures. Hollow structures are very important in jewelry design; they can not only reduce the weight of jewelry and improve wearing comfort, but also enhance the aesthetics of jewelry through unique designs.

[0004] However, when the design of the hollow structure is highly complex and the hollow part is large, if there is no appropriate support structure in the hollow structure, the structure is prone to collapse during the printing process. This not only increases the scrap rate of the workpiece, but also seriously affects production efficiency and cost control. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the lack of suitable support structures in hollow structures, which can easily lead to structural collapse during the printing process. Therefore, this invention proposes a weld-free hollow jewelry structure based on precious metal 3D printing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a weldless hollow jewelry structure based on precious metal 3D printing technology, including jewelry pieces with hollow cavities;

[0008] The jewelry piece forms an inner inner surface and an outer inner surface on the inner side of the hollow cavity;

[0009] The hollow cavity contains a plurality of support columns, and the effective area defined by the inner surface of the inner ring, the inner surface of the outer ring, or any top end of the support column has at least three support points.

[0010] Furthermore, the two ends of the support column are respectively connected to the top surface and the bottom surface of the jewelry piece, and the support column includes a single support column and an umbrella frame support column;

[0011] The umbrella frame support column includes a main pole and at least one support pole.

[0012] Furthermore, the single-plant support column is a cylinder or an elliptical cylinder, and the diameter or minor axis diameter of the single-plant support column is not less than 0.2 mm.

[0013] Furthermore, the main rod is a cylinder with a diameter of not less than 0.3 mm, and the support rod is a cylinder with a diameter of not less than 0.2 mm.

[0014] Furthermore, the size of the effective area is 0.65mm x 0.65mm.

[0015] Furthermore, the base point includes metal point domains formed on the inner surface of the inner ring and / or the inner surface of the outer ring at the upper and lower ends, and a force-bearing area is defined between two metal point domains;

[0016] And the support point formed at the end of the support column.

[0017] Furthermore, the bottom of the jewelry piece also has a slag discharge port that communicates with the hollow cavity.

[0018] Furthermore, the slag discharge port is configured as a circular hole, wherein the diameter of the circular hole is 0.3mm-0.5mm.

[0019] Furthermore, the support point is a support column and / or a base point.

[0020] The present invention proposes a weldless hollow jewelry structure based on precious metal 3D printing technology. The advantages are as follows: During the jewelry printing process, the present invention designs multiple support columns inside the hollow cavity, and uses one of the inner surface of the inner ring and the inner surface of the outer ring as the support point. The support columns work together to form a good support for the interior of the hollow cavity to avoid the problem of collapse. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the support column structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the basic structure of this utility model;

[0024] Figure 4 This is a schematic diagram of various umbrella frame support column structures of this utility model;

[0025] Figure 5 for Figure 4 A three-dimensional image;

[0026] Figure 6 for Figure 4 Top view.

[0027] In the diagram: 1. Jewelry piece; 11. Hollow cavity; 12. Inner ring inner surface; 13. Outer ring inner surface; 14. Slag discharge port; 2. Support column; 21. Single support column; 22. Umbrella frame support column; 221. Main pole; 222. Support pole; 3. Base point; 31. Metal point area; 32. Stress-bearing area; 4. Effective area. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figure 1-6 As one embodiment of this utility model, a weldless hollow jewelry structure based on precious metal 3D printing technology is disclosed. This jewelry structure is used to solve the problems of collapse and incomplete workpieces that are prone to occur in current hollow jewelry due to the lack of internal support.

[0030] The specific jewelry structure includes a jewelry piece 1 with a hollow cavity 11. In this embodiment, the jewelry piece 1 is a ring as an example. Of course, this hollow support structure can also be used in aerospace, precious metal casting, hardware and other fields, which will not be elaborated here.

[0031] In this embodiment, the jewelry piece 1 forms an inner ring inner surface 12 and an outer ring inner surface 13 on the inner side of the hollow cavity 11;

[0032] A plurality of support columns 2 are formed in the hollow cavity 11, and at least three support points are formed in the effective area 4 defined by the inner surface 12 of the inner ring, the inner surface 13 of the outer ring, or any top end of the support column 2 as the base point 3.

[0033] Specifically, in this embodiment, the two ends of the support column 2 are respectively connected to the top surface and the bottom surface of the jewelry piece 1, and the support column 2 includes a single support column 21 and an umbrella frame support column 22;

[0034] The umbrella frame support column 22 includes a main rod 221 and at least one support rod 222, such as... Figure 4 As shown, this is a structure of several embodiments of the umbrella frame support column 22. Specifically, the support rod 222 is inclinedly arranged on the side of the main rod 221 and multiple rods can be distributed circumferentially. Preferably, in this embodiment, the inclination angle of the support rod 222 is 45-60° with the laser sintered layer. Of course, the connection position and specific number of the support rod 222 can be designed by those skilled in the art according to actual needs, and no further limitations are made here.

[0035] In some embodiments, the single-plant support column 21 in this invention is a cylinder or an elliptical cylinder, and the diameter or minor axis diameter of the single-plant support column 21 is not less than 0.2 mm.

[0036] In addition, the main rod 221 is a cylinder with a diameter of not less than 0.3 mm, and the support rod 222 is a cylinder with a diameter of not less than 0.2 mm.

[0037] In one specific embodiment, the effective area 4 has a size of 0.65mm x 0.65mm. That is, the present invention adopts a structure in which support columns 2 are arranged inside the hollow cavity 11. The longitudinal direction of the support columns 2 is perpendicular to the laser sintered forming layer. The grid points are arranged at intervals of 0.65mm x 0.65mm, and at least 3 support points are ensured within each 0.65mm x 0.65mm area. In this preferred embodiment, the support points are the support columns 2 and / or the base points 3, which effectively solves the problem of hollow workpiece collapse and incompleteness.

[0038] Based on the above embodiments, the base point 3 in this embodiment includes metal point regions 31 formed on the upper and lower ends of the inner surface 12 of the inner ring and / or the inner surface 13 of the outer ring. A force-bearing area 32 is defined between the two metal point regions 31. That is, in this embodiment, the base point 3 uses one of the inner surface 12 of the inner ring and the inner surface 13 of the outer ring as a support point, and works with the support column 2 to form a good support for the interior of the hollow cavity 11 to avoid the collapse problem.

[0039] And the support points formed at the ends of the support column 2. Specifically, in this embodiment, when the support column 2 is set as a single support column 21, the support column 2 has one support point at the top. When the support column 2 is set as an umbrella frame support column 22, the number of support points at the top needs to be determined according to the number of its support rods 222. For example, when three support rods 222 are connected to the main rod 221, a total of four support points are formed between the main rod 221 and the support rods 222.

[0040] In addition, such as Figure 4 , Figure 5 as well as Figure 6 As shown, in this embodiment, the support rod 222 can be stacked along the outer side of the main rod 221, which can increase the number of support rods 222 and achieve the effect of a single support rod 221 forming more support points.

[0041] In a further embodiment, the present invention also has a slag discharge port 14 at the bottom of the jewelry piece 1 that communicates with the hollow cavity 11.

[0042] Specifically, the slag discharge port 14 is configured as a circular hole, wherein the diameter of the circular hole is 0.3mm-0.5mm. Furthermore, those skilled in the art can select specific parameter values ​​according to different 3D printing precision and jewelry structure. Preferably, in this embodiment, the central axis of the circular hole coincides with the central axis of the jewelry piece 1.

[0043] This utility model employs a circular hole with a diameter of 0.3mm-0.5mm at the bottom of the workpiece. The circular hole must meet condition one, namely, the position of the circular opening is set in combination with the hollow internal structure and the arrangement of the support column 2, to ensure that the residual metal powder can flow freely and be discharged from the circular opening.

[0044] Secondly, the circular hole must meet condition two, that is, the position of the circular hole should not affect the overall structure of the workpiece, nor affect the practicality and wearability of the jewelry, thus effectively solving the problem of sealing metal powder inside the hollow part.

[0045] The specific steps involved in printing and manufacturing this jewelry are as follows;

[0046] First, design a 3D model of the jewelry: Based on the requirements, design a 3D model of the jewelry with a hollow structure, and use cylinders with a diameter of not less than 0.2mm as support pillars 2 in the hollow interior area. Arrange the support pillars 2 according to the position of the effective metal surface to ensure that there are at least 3 support points in each 0.65mm x 0.65mm area.

[0047] Set circular holes: Set circular holes in the 3D model state to remove precious metal powder inside the hollow body. The circular holes are made by opening a circular cylinder at the bottom of the workpiece.

[0048] Precious metal 3D printing: Using precious metal 3D printing equipment, the designed three-dimensional model of jewelry is printed into a physical object;

[0049] Recovery of precious metal powder: Stand the workpiece upright, and if necessary, gently bounce the workpiece to allow the precious metal powder to flow out smoothly from the circular hole.

[0050] Post-processing: Laser welding technology is used to weld the circular holes without solder. The printed jewelry is then polished and ground to make its surface smooth and beautiful. By using laser spot welding technology to weld the circular holes without solder, the problem of incomplete workpieces caused by circular holes is effectively solved. On the other hand, the solderless welding ensures the metal color of the workpiece.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A weld-free hollow jewelry structure based on precious metal 3D printing technology, characterized in that, Including jewelry pieces (1) with a hollow cavity (11); The jewelry piece (1) forms an inner inner surface (12) and an outer inner surface (13) on the inside of the hollow cavity (11); A plurality of support columns (2) are formed in the hollow cavity (11), and at least three support points are in the effective area (4) defined by the inner surface (12), the outer surface (13) or any top end of the support column (2) as the base point (3).

2. The weldless hollow jewelry structure based on precious metal 3D printing technology according to claim 1, characterized in that: The support column (2) is connected to the top surface and bottom surface of the jewelry piece (1) at both ends respectively. The support column (2) includes a single support column (21) and an umbrella frame support column (22). The umbrella frame support column (22) includes a main pole (221) and at least one support pole (222).

3. The weldless hollow jewelry structure based on precious metal 3D printing technology according to claim 2, characterized in that: The single-plant support column (21) is a cylinder or an elliptical cylinder, and the diameter or minor axis diameter of the single-plant support column (21) is not less than 0.2 mm.

4. The weldless hollow jewelry structure based on precious metal 3D printing technology according to claim 2, characterized in that: The main rod (221) is a cylinder with a diameter of not less than 0.3 mm, and the support rod (222) is a cylinder with a diameter of not less than 0.2 mm.

5. The weldless hollow jewelry structure based on precious metal 3D printing technology according to claim 1, characterized in that: The effective area (4) has a size of 0.65mm x 0.65mm.

6. A weld-free hollow jewelry structure based on precious metal 3D printing technology according to claim 1 or 2, characterized in that: The base point (3) includes metal point domains (31) formed on the upper and lower ends of the inner surface (12) of the inner ring and / or the inner surface (13) of the outer ring, and a force-bearing area (32) is defined between the two metal point domains (31); And the support point formed at the end of the support column (2).

7. The weldless hollow jewelry structure based on precious metal 3D printing technology according to claim 1, characterized in that: The bottom of the jewelry piece (1) also has a slag discharge port (14) that communicates with the hollow cavity (11).

8. The weldless hollow jewelry structure based on precious metal 3D printing technology according to claim 7, characterized in that: The slag discharge port (14) is configured as a circular hole, wherein the diameter of the circular hole is 0.3mm-0.5mm.

9. A weld-free hollow jewelry structure based on precious metal 3D printing technology according to claim 1, characterized in that: The support points are support columns (2) and / or base points (3).

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