Double-layer double-sided rolled edge coin

Abstract

The utility model discloses a double -deck double -sided edge rolling coin, including two with decorative area's metal disc, two metal disc's decorative area constitutes double -deck double -sided edge rolling coin's positive, negative two sides, first decorative area sets up in the middle part of first metal disc outward one side, and the peripheral edge of first metal disc is outer curl, and second decorative area sets up in the middle part of second metal disc outward one side, and the peripheral edge of second metal disc is inner curl, and the peripheral size of outer curl is greater than the peripheral size of inner curl, and through edge rolling technology, the outer curl is rolled and is pressed inner curl, and two metal disc roll and seal and fixed connection. Through two metal disc, make first decorative area with second decorative area mutual influence. After embossing, again through the edge rolling and form the whole, make double -sided embossing independent, do not receive the influence of embossing mark, therefore, can realize high -quality double -sided embossing. The 3D profile formed by embossing enhances the visual and tactile attraction.

Description

Technical Field

[0001] This utility model relates to the toy industry, specifically a lightweight, recyclable three-dimensional structure disc or coin made from metal sheet components, particularly suitable for customer loyalty program promotion, collectibles, and game tokens. It also relates to a double-layered, double-sided rolled edge coin. Background Technology

[0002] In recent years, toy coins (toy cards) printed with pictures and cartoon designs, such as cartoon coins that children often play with and that are favored by collectors, have been very popular. However, most of these toy coins are made of paper or plastic, which has problems such as insufficient hardness, easy damage, and unclear or unbright pictures.

[0003] Therefore, patent CN1709539A discloses a toy cap (toy coin) made of tinplate, with patterns printed or stamped on its surface. A mold is used to stamp the cap into a round shape, and then a rolling machine is used to roll the edges of the round cap to form the toy cap. This design meets the hardness requirements while preventing cuts through the rolling process.

[0004] The drawback of this technical solution is that the toy lid is too thin and has a poor texture. For example, the instruction manual states that it makes a sound by being pressed and deformed, indicating that it lacks rigidity. Furthermore, because it is a single-layer structure, it is not convenient to stamp three-dimensional patterns onto the toy lid; otherwise, one side would be convex and the other concave, resulting in a pattern that is raised in one direction and a mirrored concave pattern on the other, which would be rather monotonous. Therefore, this type of toy lid can only have different patterns printed on both sides.

[0005] Therefore, the aforementioned toy lid offers a poor user experience and limited application scenarios, making it unsuitable for displaying rich information.

[0006] Furthermore, some existing promotional coins and game tokens are typically manufactured using metal alloy casting (e.g., zinc) or single-layer metal sheet stamping. These processes are not only costly but also result in heavier products that are difficult to recycle through conventional roadside recycling systems, limiting the implementation of functional design features such as double-sided embossing. In addition, many existing products are made from virgin materials. It is worth noting that zinc alloy coins are significantly heavier for their size (approximately 18 grams), potentially posing a safety risk to children over three years old, with the potential for personal injury or property damage. Moreover, zinc alloy coins typically require electroplating, a process involving toxic chemicals and failing to meet environmental protection requirements. Furthermore, this material is unsuitable for printing high-quality artistic designs. Utility Model Content

[0007] The purpose of this utility model is to solve one of the above defects and provide a double-layered, double-sided rolled edge coin.

[0008] The objective of this utility model is achieved through the following means:

[0009] A double-layered, double-sided rolled-edge coin includes two metal discs with decorative areas. The decorative areas of the two metal discs constitute the front and back sides of the double-layered, double-sided rolled-edge coin. The first decorative area is located on the outer side of the center of the first metal disc, and the outer edge of the first metal disc is rolled outward. The second decorative area is located on the outer side of the center of the second metal disc, and the outer edge of the second metal disc is rolled inward. The outer outer edge is larger than the outer inner edge. The outer rolled edge is rolled and pressed against the inner rolled edge through a rolling process, so that the two metal discs are rolled and fixedly connected.

[0010] As a preferred embodiment, an inwardly recessed ring is provided between the outer rolled edge and the first decorative area, and an outwardly protruding ring is provided between the inner rolled edge and the second decorative area. The concave ring and the convex ring correspond to each other and overlap each other, and the height of the convex ring is higher than the height of the outer rolled edge after forming.

[0011] As a preferred embodiment, a cavity is formed between the middle portions of the two metal disks.

[0012] As a preferred embodiment, a counterweight is provided inside the cavity.

[0013] As a preferred embodiment, the counterweight is a metal block or a magnet.

[0014] As a preferred embodiment, a sensing chip is provided inside the cavity.

[0015] As a preferred embodiment, the metal disc is made of tinplate or aluminum.

[0016] As a preferred embodiment, the first decorative area and the second decorative area are provided with outwardly stamped protruding patterns, the height of which is less than the height of the protruding ring.

[0017] As a preferred embodiment, the metal disk is circular with an outer diameter of 25–80 mm.

[0018] As a preferred embodiment, the metal disk is elliptical or square.

[0019] The beneficial effects of this utility model are as follows: 1. The two metal discs ensure that the first and second decorative areas do not affect each other. 2. The embossing is followed by edge rolling to form a whole, making the double-sided embossing independent and unaffected by the embossing marks, thus achieving high-quality double-sided embossing. 3. The 3D contours formed by embossing enhance visual and tactile appeal. 4. It also supports single-sided embossing of rolled-edge coins, with the unembossed side remaining smooth, making it widely applicable. 5. Through the design of convex and concave rings, the back of one rolled-edge coin can cover the front of another rolled-edge coin, with the outer rolled edges of the two coins touching, thus enabling the stacking of rolled-edge coins. This design increases the sense of layering between the front and back of the rolled-edge coins, while the decorative areas do not affect the stacking, reducing stacking space. 6. By setting up cavities, counterweights can be added inside the cavities to increase texture. 7. Magnets can be added inside the cavities to increase the magnetic attraction between multiple rolled-edge coins, further enhancing the gaming experience. 8. An RFID sensor chip can be added to the cavity to achieve unique identification of each coin. Combined with other external identification electronic devices, this can create smart board games or electronic membership cards. 9. The metal disc is made of tinplate or aluminum, which is low-cost, simple to process, and has high hardness. The surface of the metal disc allows for high-quality printing without the need for environmentally harmful electroplating processes. Furthermore, tinplate and aluminum are easy to recycle. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of the unprocessed cross-section of the metal disk in the embodiment.

[0021] Appendix Figure 2 This is a schematic diagram of the cross-section of the metal disc stamped with convex and concave edges in the embodiment.

[0022] Appendix Figure 3 This is a schematic diagram of the structural cross-section of an embodiment.

[0023] Appendix Figure 4 for Figure 3 Enlarged view of position a in the middle

[0024] Appendix Figure 5 This is a schematic diagram of the metal disc embossing in the embodiment.

[0025] Explanation of reference numerals in the attached diagram:

[0026] 1-First metal disc; 11-First decorative area; 12-Concave ring; 13-Outer rolled edge; 2-Second metal disc; 21-Second decorative area; 22-Convex ring; 23-Inner rolled edge; 3-Cavity; 4-Counterweight; L1-Outer perimeter of the outer rolled edge; L2-Outer perimeter of the inner rolled edge; L3-Height of the convex ring; L4-Height of the outer rolled edge after forming. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] To facilitate understanding, the present invention will now be described in further detail with reference to specific implementation examples, but this is not intended to limit the present invention.

[0029] like Figure 1-5 As shown, this utility model discloses a double-layered, double-sided rolled-edge coin, comprising two metal discs with decorative areas. The decorative areas of the two metal discs constitute the front and back sides of the double-layered, double-sided rolled-edge coin. The first decorative area 11 is located on the outer side of the center of the first metal disc 1, and the outer edge of the first metal disc 1 is an outward rolled edge 13. The second decorative area 21 is located on the outer side of the center of the second metal disc 2, and the outer edge of the second metal disc 2 is an inward rolled edge 23. The outer dimension L1 of the outward rolled edge 13 is larger than the outer dimension L2 of the inward rolled edge 23 (see reference). Figure 1 The outer rolled edge 13 is rolled and pressed into the inner rolled edge 23 by a stamping process, so that the two metal discs are rolled and fixedly connected (see reference). Figure 2 (3, 4). The sealing method involves an inner rolled edge 23 with a planar structure. The outer rolled edge 13 is first bent and then rolled using a stamping process, causing the rolled structure of the outer rolled edge 13 to fix and press the inner rolled edge 23 together, achieving a fixed connection. This structural design of the inner rolled edge 23 and the outer rolled edge 13 is simple, reliable, and results in a stable product structure. Compared to ordinary bending sealing structures or welding techniques, the rolled edge design used in this design is both aesthetically pleasing and more stable, effectively preventing sharp corners and breakage that could injure children or be easily pried open by children. Compared to rolling both edges simultaneously, this technique avoids tensile stress between the two metal discs, preventing deformation of the metal discs.

[0030] By using two metal discs, the first decorative area 11 and the second decorative area 21 are made independent of each other. Therefore, double-sided patterns can be printed on both decorative areas to form a double-sided pattern, or the pattern can be printed and then stamped to form a double-sided raised three-dimensional pattern. Because the double-sided embossing is independent and not affected by the embossing mark (avoiding the problem of one side being concave and the other convex in the existing technology), high-quality double-sided embossing can be achieved, making the pattern richer and fuller (see reference). Figure 5 ).

[0031] It also supports embossing on one side of the coin while the unembossed side remains smooth.

[0032] like Figure 2-4 As shown, an inwardly recessed ring 12 is provided between the outer rolled edge 13 and the first decorative area 11, and an outwardly protruding ring 22 is provided between the inner rolled edge 23 and the second decorative area 21. The concave ring 12 and the protruding ring 22 correspond to each other and overlap. The height L3 of the protruding ring 22 is higher than the height L4 of the outer rolled edge 13 after forming (reference). Figure 3 Through the design of the raised ring 22 and the concave ring 12, the back of one edged coin can cover the front of another edged coin, with the outer rolled edges of the two coins touching, thus achieving stacking of edged coins. This design increases the sense of layering between the front and back of the edged coins. At the same time, the decorative areas do not affect the stacking, reducing stacking space. Furthermore, through this stacking method, the front of the stacked edged coins faces the same direction. The height of the superimposed 3D patterns formed by the stamping of the two decorative areas is less than the height of the raised ring 22, and is not affected by the 3D texture or pattern.

[0033] like Figure 3-4 As shown, a cavity 3 is formed between the middle of the two metal discs. By creating this cavity, a counterweight 4 can be added to meet the weight requirements of the rolled coin, thus increasing its texture. A magnet can also be added to the cavity to give the rolled coin a magnetic function, allowing it to be attached to a refrigerator or other magnetic items for display. An RFID sensor chip can also be added to the cavity to create a smart chess toy or electronic membership card. When using an RFID sensor chip, the built-in antenna of the RFID sensor chip can directly contact the metal disc, extending the metal disc into an antenna. This allows the rolled coin to become a smart terminal with an independent digital number, enabling other smart devices to identify it, thus facilitating its application in double-blind chess games.

[0034] In this embodiment, the metal disc is made of tinplate or aluminum. Tinplate or aluminum is durable, low-cost, and easy to manufacture. Its surface allows for high-quality printing without the need for environmentally harmful electroplating processes, and both tinplate and aluminum are easily recyclable. This technical solution eliminates the need for traditional electroplating; the desired pattern can be achieved through printing. The process is more environmentally friendly and faster. If aluminum is chosen, recycled aluminum can be sourced from the market to create more environmentally friendly products. This helps reduce carbon emissions and pollution by utilizing recycled aluminum from consumer use to produce cost-effective products.

[0035] like Figure 5 As shown, the first decorative area 11 and the second decorative area 21 are provided with outwardly stamped protruding patterns. The embossed 3D contours enhance visual and tactile appeal.

[0036] Using tinplate as the raw material and a round, rolled-edge coin as the basis, the manufacturing process of this embodiment is as follows:

[0037] 1. Print the desired pattern on a large sheet of tinplate material.

[0038] 2. Use a punch press to stamp out the first metal disc 1 and the second metal disc 2 of the required dimensions.

[0039] 3. Stamp the first metal disc 1 and the second metal disc 2 with corresponding patterns, and concave ring 12, convex ring 22, etc.

[0040] 4. The outer rolled edge 13 of the first metal disc 1 is stamped and bent again into an upward concave shape (see reference). Figure 2 ), to facilitate the positioning and placement of the first metal disk 1

[0041] 5. Place the second metal disc 2 into the bent space of the first metal disc 1. Alternatively, a counterweight can be placed before placing the second metal disc 2. Then, perform edge curling and stamping to curl the outer edge 13 and press the inner edge 23 together. This completes the production of the finished product.

[0042] In this embodiment, the metal disk is circular with an outer diameter of 25–80 mm. Alternatively, the metal disk can be made into an elliptical shape.

[0043] In practical applications, metal discs are not limited to round, oval, or square shapes; they can also be polygonal or irregular shapes such as triangles.

[0044] The double-layer, double-sided rolled edge structure of this invention is not only applicable to the toy industry, but also to badges and other fields with brand or logo.

[0045] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A double-layered, double-sided rolled-edge coin, characterized in that, It includes two metal discs with decorative areas. The decorative areas of the two metal discs form the front and back of a double-layered, double-sided rolled edge coin. The first decorative area is located on the outer side of the center of the first metal disc, and the outer edge of the first metal disc is rolled outward. The second decorative area is located on the outer side of the center of the second metal disc, and the outer edge of the second metal disc is rolled inward. The outer edge is larger than the outer edge. The outer rolled edge is rolled and pressed against the inner rolled edge through a rolling edge process, so that the two metal discs are rolled and fixedly connected.

2. The double-layered, double-sided rolled-edge coin according to claim 1, characterized in that, A concave ring is provided between the outer rolled edge and the first decorative area, and a convex ring is provided between the inner rolled edge and the second decorative area. The concave ring and the convex ring correspond to each other and overlap each other. The height of the convex ring is higher than the height of the outer rolled edge after it is formed.

3. The double-layered, double-sided rolled-edge coin according to claim 1, characterized in that, A cavity is formed between the middle of the two metal disks.

4. The double-layered, double-sided rolled-edge coin according to claim 3, characterized in that, The cavity is equipped with a counterweight.

5. The double-layered, double-sided rolled-edge coin according to claim 4, characterized in that, The counterweight is a metal block or a magnet.

6. The double-layered, double-sided rolled-edge coin according to claim 3, characterized in that, The cavity contains a sensing chip.

7. The double-layered, double-sided rolled-edge coin according to claim 1, characterized in that, The metal disc is made of tinplate or aluminum.

8. The double-layered, double-sided rolled-edge coin according to claim 2, characterized in that, The first decorative area and the second decorative area are provided with outwardly stamped protruding patterns, and the sum of the heights of the protruding patterns in the two decorative areas is less than the height of the protruding ring.

9. The double-layered, double-sided rolled-edge coin according to claim 1, characterized in that, The metal disk is circular with an outer diameter of 25–80 mm.

10. The double-layered, double-sided rolled-edge coin according to claim 1, characterized in that, The metal disk is elliptical or square.

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