Silver-covered gold hollow jewelry and production process thereof

Abstract

The invention discloses a silver-coated gold hollow jewelry and a production process thereof. The silver-coated gold hollow jewelry comprises an upper and a lower silver base layer with a gold layer attached to the surface, and the edge of the gold layer is turned inward; the upper silver base layer and the lower silver base layer are buckled to form a cavity; the upper silver base layer and the lower silver base layer are both provided with through holes; an outer silver tube is installed in the cavity and is located between the through hole of the upper silver base layer and the through hole of the lower silver base layer, an inner silver tube is installed in the outer silver tube, and both ends of the inner silver tube have outward turning edges; two silver rivets with gold covers are respectively inserted into the inner silver tube from both ends so that the nail caps of the silver rivets close the two ends of the inner silver tube. When preparing the silver-coated gold hollow jewelry, two parts are first made, and then buckled and riveted at the highest point of the cavity. The gold layer on the surface of the double-sided silver-coated gold hollow jewelry produced by the invention is of high quality, with a gold layer content of more than 99.9%, and the production process is environmentally friendly, meeting the needs of ethnic jewelry.

Description

Technical Field

[0001] The invention relates to gold-silver combination jewelry with a new structure, and more specifically, to a silver-covered gold hollow jewelry and a production process thereof. Background Art

[0002] Silver-in-gold hollow relief jewelry uses silver as the metal base, and a mold is used to press the silver sheet into an arc-shaped relief pattern. A thin gold sheet is covered on the silver surface with the pressed relief pattern, and then another set of molds with the same pattern as the silver base but with an adjusted gap between the convex and concave molds are used to press the gold and silver together, so that the gold surface can show the corresponding relief pattern. At present, the common process for producing silver-in-gold hollow jewelry is to buckle and weld two silver jewelry parts with arc-shaped relief patterns with a single-sided gold attachment layer. Before the two jewelry parts are buckled, the gold attachment layer that exceeds the edge of the silver part is first turned over to the back edge of the silver part. After buckling, the turned-over part is pressed and welded, such as Figure 1 and Figure 2 As shown, two jewelry parts are welded at the buckle points along the edge of the jewelry shape to make silver-covered gold hollow jewelry. However, the very thin gold attachment layer can be easily burned, penetrated, and cracked during welding, affecting the appearance of the jewelry.

[0003] The reasons for the defects in the effect of the silver-coated gold hollow jewelry produced by the prior art are: first, the silver-coated gold hollow jewelry is very popular among consumers in ethnic minority areas, and the characteristics of ethnic jewelry are exaggerated patterns and large sizes, and the weight of the jewelry is required; second, based on the relationship between the weight and price of gold in the consumer market, when the prior art is used to produce the arc-shaped relief silver jewelry parts with a single-sided gold attachment layer, the attached gold layer is very thin, only about 0.05 mm, and the thickness of the attached metal matrix silver sheet is only about 0.5 mm. When two arc-shaped relief silver jewelry parts with a single-sided gold attachment layer are welded together, in order to ensure the gold content (color) of the gold attachment layer of the silver-coated gold jewelry, it is not possible to choose the low-color gold solder that is easy to weld successfully and use the traditional gun welding (the traditional gun welding causes the gold purity of the jewelry welding point to decrease, and the purity of the gold welding point is only 96.6% detected by the x-ray fluorescence instrument). Instead, a laser welding machine that guarantees the gold color is used to weld the two parts together to make hollow silver-coated gold jewelry. The very thin gold attachment layer is easily burned, broken, and cracked by the laser, forming an effect defect. Summary of the invention

[0004] The invention overcomes the shortcomings of the prior art, provides a silver-coated gold hollow jewelry and a production process thereof, and solves the problem that the gold layer of the double-sided silver-coated gold hollow jewelry is easily penetrated during welding.

[0005] In order to solve the above technical problems, one embodiment of the present invention adopts the following technical solution:

[0006] On one hand, the present invention provides a silver-gold hollow jewelry, which comprises an upper silver base and a lower silver base, the surfaces of which are respectively pressed with gold layers by molds, and the edges of the gold layers are turned inward along the edges of the corresponding upper silver base and the lower silver base; the upper silver base and the lower silver base are buckled, and a cavity is provided between the two; both the upper silver base and the lower silver base are provided with through holes; an outer silver tube is installed in the cavity and is located between the through holes of the upper silver base and the lower silver base, an inner silver tube is installed in the outer silver tube, and both ends of the inner silver tube have outward turning edges so that the upper silver base and the lower silver base are tightly buckled together; two silver rivets are respectively inserted into the inner silver tube from both ends so that the nail caps of the silver rivets close the two ends of the inner silver tube, and the nail caps are covered with gold covers.

[0007] The upper silver base layer and / or the lower silver base layer both have embossed patterns, and the gold layer is tightly attached to the outer surfaces of the upper silver base layer and the lower silver base layer and displays the embossed patterns.

[0008] The through holes are circular holes, and the two through holes are directly opposite to each other up and down. The through holes are located at the position where the appearance thickness of the upper silver base layer and the lower silver base layer after buckling is the largest; the inner diameter of the outer silver tube is equal to the diameter of the through holes, and the two ends of the outer silver tube are supported on the periphery of the through holes of the upper silver base layer and the lower silver base layer.

[0009] The inner silver tube is gap-matched with the outer silver tube, and the length of the inner silver tube is greater than the distance between the two through holes on the upper silver base layer and the lower silver base layer, so that the two ends of the inner silver tube extend outside the two through holes.

[0010] The portion of the silver rivet inserted into the inner silver tube is a tapered cone, the end diameter of the larger end of the silver rivet is larger than the inner diameter of the inner silver tube, and the end diameter of the smaller end of the silver rivet is smaller than the inner diameter of the inner silver tube.

[0011] The cones of the two silver rivets are provided with a plurality of through grooves, a gap is provided between the two silver rivets, and the metal adhesive is arranged in the through groove and the gap between the two silver rivets.

[0012] The position where the upper silver base layer and the lower silver base layer are attached together is fixed by gold wire riveting.

[0013] The edge of the gold cover is adjacent to the gold layer so that the silver rivets and the inner silver tube are completely covered, and only gold is shown on the entire jewelry surface.

[0014] Another aspect of the present invention provides a method for preparing the above-mentioned silver-covered gold hollow jewelry, the method comprising the following steps:

[0015] (1) Using a mold to press a relief pattern on a silver sheet to form an upper silver base layer and a lower silver base layer, punching rivet holes at locations where rivets are required, and using another set of molds with the same pattern as the silver base layer but with an adjusted gap between the convex and concave molds to press a gold sheet onto the surface of the upper silver base layer and the lower silver base layer to form a gold layer, and then turning the edges of the gold layer inward to obtain a first silver-covered gold jewelry part and a second silver-covered gold jewelry part;

[0016] (2) inserting the inner silver tube into the rivet hole of the first silver-clad gold jewelry part, sleeve the outer silver tube on the inner silver tube, buckle the second silver-clad gold jewelry part on the first silver-clad gold jewelry part, make the inner silver tube pass through the rivet hole, and the gold layer is on the outer surface of the jewelry obtained by buckling;

[0017] (3) Flanging the two ends of the inner silver tube so that the flanged portions are buckled onto the first silver-clad gold jewelry part and the second silver-clad gold jewelry part;

[0018] (4) Insert the two silver rivets with gold caps into the inner silver tube from both ends and tighten the silver rivets.

[0019] The portion of the silver rivet inserted into the inner silver tube is processed with a through groove. Before the two silver rivets are inserted into the inner silver tube, metal adhesive is first injected into the inner silver tube, and the metal adhesive fills the through groove when the silver rivets are inserted.

[0020] The present invention is further described below.

[0021] The method of attaching the gold layer to the upper silver base and the lower silver base can adopt the method recorded in the production process of a relief metal craft with a gold layer on the surface in CN106945447A. The specific process is: using a mold to press the relief pattern on the silver sheet, using the mold to punch round holes as rivet holes at the parts that need to be riveted, to obtain the upper silver base and the lower silver base, and then using another set of molds with the same pattern as the pressed silver base but with an adjusted gap between the convex and concave molds to press the gold and silver together with the upper silver base and the lower silver base to obtain two arc-shaped relief pattern jewelry parts with gold layers on the surface, and the gold layers at the edge of the upper silver base and the lower silver base are turned toward the back edge of the parts so that the two parts can be buckled to press the gold layer, but this is only a jewelry part with a gold layer on one side. Then, the two jewelry parts with gold layers on one side are buckled and riveted to form silver-covered gold hollow jewelry.

[0022] The inner diameter of the outer silver tube is equal to the diameter of the round hole punched by the two silver-clad gold parts that are buckled, and is also equal to the outer diameter of the inner silver tube, so that the inner silver tube can be inserted into the outer silver tube and the round hole. The length of the outer silver tube is equal to the maximum size of the inner space after the two single-sided gold-coated arc-shaped relief jewelry parts are buckled. The principle for determining this length is that the outer silver tube can support the two single-sided gold-coated arc-shaped relief jewelry parts to buckle into silver-clad gold hollow jewelry without deformation under pressure.

[0023] The length of the inner silver tube is greater than the height of the two single-sided gold-coated arc-shaped embossed jewelry parts after buckling, that is, the two ends of the inner silver tube protrude from the single-sided gold-coated arc-shaped embossed jewelry parts by about 1mm. The principle of determining the protruding length is to turn the protruding parts at both ends of the inner silver tube outwards and buckle them outside the rivet holes of the two single-sided gold-coated arc-shaped embossed jewelry parts to make the two jewelry parts firmly riveted. The inner silver tube needs to be turned outwards with a flanging tool.

[0024] After the silver rivets are inserted into the inner silver tube, the ends of the two silver rivets do not touch, leaving a gap in the inner silver tube. The part where the silver rivets are inserted into the inner silver tube is made into a cone, the purpose of which is that when the silver rivets are pressed with a tool, they can be pressed tighter and tighter, so that the silver rivets are firmly inserted and fixed at both ends of the inner silver tube. In order to achieve better results, an auxiliary technical solution is also considered: that is, on the surface of the cone where the silver rivets are inserted into the inner silver tube, a number of through grooves are processed longitudinally, and before the two silver rivets are inserted into the two ends of the inner silver tube for riveting, an appropriate amount of metal adhesive is injected into the inner silver tube, so that when the two silver rivets are riveted from both ends, the metal adhesive is reversely injected through the through grooves on the silver rivets, so that the riveting is more firm, so that the inner empty riveting technical solution is supplemented under this auxiliary technical solution.

[0025] Both silver rivets are covered with gold caps. The shape and diameter of the gold caps are determined according to the design of ethnic minority jewelry patterns. It can be a flower core of a flower pattern, an eye of an animal pattern, or a round convex dot of a decorative pattern, etc. The thickness of the gold cap is greater than the thickness of the gold layer on the surface of the upper / lower silver base layer, which can ensure that the gold cap will not be burned and penetrated when welded with the end face of the silver rivet by a laser welding machine. After the gold cap is pressed with a flower core pattern mold, it is covered on the end face of the silver rivet cap, and is welded with the silver rivet along the edge by a laser welding machine to complete the production of the silver rivet with a gold cap.

[0026] Special note: When the silver-plated gold hollow jewelry is a jewelry with two buckled parts that are not easy to misalign, such as round jewelry, the rivet position should be selected at the highest point of the inner space of the silver-plated gold hollow jewelry, so that the force effect can be best when the inner space is riveted. For example, when designing the jewelry graphics of the ethnic jewelry silver-plated gold hollow round earrings, the craftsmanship is considered together. The rivet position is selected at the center of the hollow earrings, and the inner space is at the highest point, so the riveting force effect is best. The size of the flower core in the pattern determines the outer diameter of the gold cover on the rivet surface, that is, the gold cover on the rivet surface here is the flower core of the embossed flower pattern.

[0027] Silver-plated gold hollow jewelry may be jewelry that is easy to misalign after the upper and lower parts are buckled. For example, silver-plated gold hollow jewelry with a special shape and a relatively large size is prone to misalignment of the two buckled parts when the inner hollow is riveted. In order to solve this problem, when designing the jewelry pattern, the highest point of the inner hollow of the arc surface is selected as the "main riveting point" of the inner hollow riveting. In addition, 1 to 2 places with circular relief decorative convex points are selected as "secondary riveting points" in places that are not arc surfaces (that is, places without inner space after buckling). The riveting point is directly fixed with a section of gold wire of corresponding diameter, and a small gold rivet is used to rivet and fix it. The rivet circular convex point is a circular relief decorative convex point in the figure. The riveting convex point is considered together when designing the pattern, such as decorative convex points such as flower cores. In this way, multi-point riveting can prevent the two riveted jewelry parts from being misaligned.

[0028] The jewelry parts with a gold layer on one side produced by the present invention are pressed and gold-plated by a mold, and no environmental pollution is caused by other processes such as chemical gold plating or "mercury gilding".

[0029] Jewelry in ethnic minority areas of my country is mainly made of silver and has a single color. By using the technical solution of the present invention, hollow "silver-wrapped gold" jewelry with large specifications, exaggerated decorative patterns, and gold visible on the surface but light in weight, which is favored by consumers in ethnic minority areas, can be produced. Wearing the ethnic silver-wrapped gold jewelry produced by the present invention, people can sing and dance with golden light, which meets the needs of consumers in ethnic minority areas of my country with increasingly improved living standards.

[0030] Compared with the prior art, the present invention has at least the following beneficial effects: the present invention adopts the inner hollow riveting technology to connect the two buckled parts of silver-coated gold, and the connection is firm. Since welding is not used to connect the two buckled parts, the gold layer on the surface of the hollow jewelry will not be penetrated, and hollow jewelry with silver-coated gold on both sides can be produced. After detection by an x-ray fluorescence detector, the gold layer content on the surface is 99.99%. The production process is green and environmentally friendly, and meets the demand of ethnic jewelry for jewelry with large specifications, exaggerated patterns, and the entire surface is gold. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a pattern of silver-covered gold hollow circle earrings, a kind of ethnic jewelry.

[0032] Figure 2 for Figure 1 AA section view of the silver-gold-covered hollow circle earrings shown.

[0033] Figure 3 A schematic diagram of a jewelry part with a gold layer on one side prepared by the present invention.

[0034] Figure 4 The cross-sectional view of the silver-covered gold hollow jewelry prepared by the present invention.

[0035] Figure 5 It is a special-shaped hollow jewelry covered with silver and gold. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] Example 1

[0038] The silver-covered gold hollow jewelry of this embodiment is a round earring, which is formed by buckling an upper silver base 1 and a lower silver base 2 to form a hollow structure. The upper silver base and the lower silver base both have relief patterns, and their relief patterns can be the same or different, but the diameter of the dot in the center of the round jewelry should be the same, so that the two jewelry parts can be made into inner and outer silver tubes and rivet gold caps of the same diameter. The relief patterns of the upper silver base and the lower silver base of this embodiment are exactly the same, and the patterns are as follows: Figure 1 As shown, the shape is Figure 3 As shown, the thickness of the upper silver base layer and the lower silver base layer are both about 0.5 mm.

[0039] The upper silver base layer and the lower silver base layer are respectively provided with a gold layer 3, and the diameter of the gold layer is larger, so that the edge of the gold layer can be turned inward along with the edge of the corresponding upper silver base layer and the lower silver base layer. Figure 3 You can see the gold layer on the flange. The gold layer is very thin, about 0.05mm thick. Another set of molds with the same pattern as the silver base but with adjusted gaps between the convex and concave molds are used to press the gold and silver together, so that the gold layer is tightly attached to the outer surface of the upper and lower silver bases and displays the relief pattern corresponding to the upper and lower silver bases. Since the silver sheet is pressed into an arc-shaped relief pattern by a mold, the upper and lower silver bases are arc-shaped, and there is a cavity 4 between the buckled upper and lower silver bases. The shape of the cavity can be referred to Figure 2 and Figure 4 .

[0040] like Figure 3 As shown, both the upper silver base and the lower silver base have through holes 5, which are circular holes, and the two through holes are directly opposite to each other, and are used to rivet the upper and lower silver bases. Since the upper silver base and the lower silver base are symmetrical and circular, the through holes are set at the center of the upper silver base and the lower silver base, which is also the position where the appearance thickness of the structure formed by the upper silver base and the lower silver base is the largest after buckling. Figure 4As shown, two through holes are used to install the inner silver tube 6 and the silver rivet 7. In order to make the center of the earring have sufficient pressure bearing capacity, an outer silver tube 8 is also arranged in the cavity between the two through holes. The outer silver tube is installed in the cavity 4 and is located between the through hole of the upper silver base and the through hole of the lower silver base. The outer silver tube is sleeved on the inner silver tube. The inner diameter of the outer silver tube is equal to the diameter of the through hole 5. The two ends of the outer silver tube are supported on the periphery of the through holes of the upper silver base and the lower silver base, so as to achieve the purpose of supporting the center of the earring. The inner silver tube and the outer silver tube have a clearance fit. The length of the inner silver tube is greater than the distance between the two through holes on the upper silver base and the lower silver base, which makes the two ends of the inner silver tube extend outside the two through holes, so the inner silver tube is longer than the outer silver tube. The two ends of the inner silver tube have outward flanges 9, the lower surface of the flange is attached to the gold layer of the upper / lower silver base, and the upper surface of the flange is attached to the lower surface of the nail cap 10 of the silver rivet.

[0041] like Figure 4 As shown, the earrings also have two silver rivets, which are respectively inserted into the inner silver tube from both ends so that the nail caps of the silver rivets close the two ends of the inner silver tube. The part of the silver rivet inserted into the inner silver tube is a tapered cone, and the end diameter of the larger end of the silver rivet is larger than the inner diameter of the inner silver tube, and the end diameter of the smaller end of the silver rivet is smaller than the inner diameter of the inner silver tube. The nail cap can be provided with a corresponding relief pattern, which cooperates with the pattern of the upper / lower silver base layer so that no riveting marks can be seen from the appearance of the earrings. At the same time, the cones of the two silver rivets are provided with a plurality of through grooves, and there is a gap between the two silver rivets so that the two silver rivets do not touch each other, and the metal adhesive is provided in the through grooves and the gap between the two silver rivets. A gold cover 11 is worn on the nail cap, and the gold cover is welded on the nail cap. The gold cover is also provided with the following Figure 1 The center pattern (center circular pattern) of the pattern shown. Since the edge of the gold cover is adjacent to the gold layer of the upper / lower silver base, the silver rivets and inner silver tubes are completely covered, and only gold is shown on the entire jewelry surface. Therefore, the earrings are hollow silver earrings covered with gold on both sides. The gold layer content is 99.99% pure gold as tested by an x-ray fluorescence detector.

[0042] Example 2

[0043] The silver-plated gold hollow jewelry in this embodiment is a special-shaped pendant, and its shape and pattern are as follows: Figure 5As shown. Similarly, the pendant is formed by buckling an upper silver base and a lower silver base to form a hollow structure. The upper silver base and the lower silver base have the same relief pattern, and a gold layer is attached to their surfaces. The edges of the gold layer are turned inward and closely attached to the back of the upper silver base and the lower silver base. The pattern of the entire pendant is composed of a star pattern, a moon pattern and a triangular connection pattern between the two. When the upper silver base and the lower silver base are buckled, the star patterns and the triangular connection patterns on both sides are fitted together, and there is no cavity inside. The edges of the moon patterns on both sides are buckled to form a cavity inside. At the highest position 12 of the cavity of the moon pattern, that is, the circular pattern, a circular through hole is punched, and then the two moon patterns are riveted using the same structure recorded in Example 1. Since the jewelry is a special-shaped pendant, if only the moon pattern is riveted, it is easy to cause the upper silver base and the lower silver base to be misaligned. Therefore, a rivet hole is set at the position where the upper silver base and the lower silver base are attached together, that is, at the center of the triangular connection pattern and the star pattern, and fixed by gold wire riveting. Only one place can be selected to set the gold wire riveting fixation, or two places can be selected to set the gold wire riveting fixation. In this embodiment, the center 13 of the pattern of the triangular connection pattern is selected to be riveted with gold wire. Since the surface convex point formed by the gold wire riveting fixation is exactly at the center of the pattern, the riveting mark will not be obviously seen from the appearance of the special-shaped pendant.

[0044] Example 3

[0045] The cones of the two silver rivets of the silver-covered gold hollow jewelry are not provided with through grooves, and no metal adhesive is used in the inner silver tube. The other structures are exactly the same as those in Example 1.

[0046] Example 4

[0047] Prepare the silver-coated gold hollow circle earrings shown in Example 1: press a relief pattern on a silver sheet to form an upper silver base layer and a lower silver base layer, punch rivet holes in the center of the circles of the upper silver base layer and the lower silver base layer, press a gold sheet onto the surface of the upper silver base layer and the lower silver base layer to form a gold layer, and then turn the edge of the gold layer inward to obtain a first silver-coated gold jewelry part and a second silver-coated gold jewelry part.

[0048] Insert the inner silver tube into the riveting hole of the first silver-clad gold jewelry part, sleeve the outer silver tube on the inner silver tube, buckle the second silver-clad gold jewelry part on the first silver-clad gold jewelry part, make the inner silver tube pass through its riveting hole, and the gold layer is on the outer surface of the jewelry obtained by buckling; the edges of the gold layers of the first silver-clad gold jewelry part and the second silver-clad gold jewelry part are pressed together.

[0049] The two ends of the inner silver tube are flanged, and the flanged parts are buckled on the first silver-clad gold jewelry part and the second silver-clad gold jewelry part; the silver rivet is inserted into the inner silver tube, and a through groove is processed, and a gold cap is put on the nail cap, and the edge is welded. First, metal adhesive is injected into the inner silver tube, and then two silver rivets with gold caps are inserted into the inner silver tube from both ends, and the silver rivets are pressed tightly to fill the through groove with metal adhesive, so that the silver-clad gold hollow round earrings are obtained.

[0050] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in the present application. More specifically, within the scope disclosed in the present application, multiple variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A silver-plated gold hollow jewelry, characterized in that It comprises an upper silver base layer and a lower silver base layer, both surfaces of which are respectively covered with a gold layer, and the edges of the gold layer are turned inward along with the edges of the corresponding upper silver base layer and the lower silver base layer; the upper silver base layer and the lower silver base layer are buckled, and a cavity is formed between the two; both the upper silver base layer and the lower silver base layer are provided with through holes; an outer silver tube is installed in the cavity and is located between the through holes of the upper silver base layer and the through holes of the lower silver base layer, an inner silver tube is installed in the outer silver tube, and both ends of the inner silver tube have outward turning edges to make the upper silver base layer and the lower silver base layer buckled together; the through holes are round holes, and the two through holes have through holes. The through hole is located at the position where the outer thickness of the upper silver base layer and the lower silver base layer after buckling is the largest; the inner diameter of the outer silver tube is equal to the diameter of the through hole, and the two ends of the outer silver tube are supported on the periphery of the through hole of the upper silver base layer and the lower silver base layer; two silver rivets are respectively inserted into the inner silver tube from both ends so that the nail caps of the silver rivets close the two ends of the inner silver tube, and the nail caps are covered with gold covers; the part of the silver rivet inserted into the inner silver tube is a tapered cone, the end diameter of the larger end of the silver rivet is larger than the inner diameter of the inner silver tube, and the end diameter of the smaller end of the silver rivet is smaller than the inner diameter of the inner silver tube.

2. The silver-plated gold hollow jewelry according to claim 1, characterized in that The upper silver base layer and / or the lower silver base layer both have embossed patterns, and the gold layer is tightly attached to the outer surfaces of the upper silver base layer and the lower silver base layer and displays the embossed patterns.

3. The silver-plated gold hollow jewelry according to claim 1, characterized in that The inner silver tube is gap-matched with the outer silver tube, and the length of the inner silver tube is greater than the distance between the two through holes on the upper silver base layer and the lower silver base layer, so that the two ends of the inner silver tube extend outside the two through holes.

4. The silver-plated gold hollow jewelry according to claim 1, characterized in that The cones of the two silver rivets are provided with a plurality of through grooves, a gap is provided between the two silver rivets, and the metal adhesive is arranged in the through groove and the gap between the two silver rivets.

5. The silver-plated gold hollow jewelry according to claim 1, characterized in that The position where the upper silver base layer and the lower silver base layer are attached together is fixed by gold wire riveting.

6. The silver-plated gold hollow jewelry according to claim 1, characterized in that The edge of the gold cover is adjacent to the gold layer so that the silver rivets and the inner silver tube are completely covered, and only gold is shown on the entire jewelry surface.

7. The method for preparing the silver-plated gold hollow jewelry according to any one of claims 1 to 6, characterized in that The following steps are involved: (1) pressing a relief pattern on a silver sheet to form an upper silver base layer and a lower silver base layer, punching rivet holes at locations where rivets are required, pressing a gold sheet onto the surfaces of the upper silver base layer and the lower silver base layer to form a gold layer, and then turning the edges of the gold layer inward to obtain a first silver-clad gold jewelry part and a second silver-clad gold jewelry part; (2) inserting the inner silver tube into the rivet hole of the first silver-clad gold jewelry part, sleeve the outer silver tube on the inner silver tube, buckle the second silver-clad gold jewelry part on the first silver-clad gold jewelry part, make the inner silver tube pass through the rivet hole, and the gold layer is on the outer surface of the jewelry obtained by buckling; (3) Flanging the two ends of the inner silver tube so that the flanged portions are buckled onto the first silver-clad gold jewelry part and the second silver-clad gold jewelry part; (4) Insert the two silver rivets with gold caps into the inner silver tube from both ends and tighten the silver rivets.

8. The method for preparing the silver-plated gold hollow jewelry according to claim 7, characterized in that The portion of the silver rivet inserted into the inner silver tube is processed with a through groove. Before the two silver rivets are inserted into the inner silver tube, metal adhesive is first injected into the inner silver tube, and the metal adhesive fills the through groove when the silver rivets are inserted.

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