Stamping die for aluminum foil meal box

Abstract

The utility model discloses a stamping die for an aluminum foil meal box, and aims to improve the production efficiency, ensure the product quality and prolong the service life of the die. The die comprises an upper die and a lower die, and the upper die is movably arranged above the lower die. The lower die comprises a bottom plate, a male die block, a lower ejector block and a buffer block, and the upper die comprises a supporting plate, a female die block, an upper ejector block and a punching block. The female die block covers the male die block, the punching blocks are movably arranged on the two sides of the female die block, and the buffering blocks support the punching blocks to reduce impact force. The inner wall of the female die block is provided with a first inclined face expanding outwards, the male die block is provided with a second inclined face matched with the first inclined face, material flowing is optimized, and forming quality is improved. The aluminum foil meal box stamping die is efficient and stable by optimizing the structural design and the stamping process, has remarkable technical progress and practical value and is suitable for large-scale production.

Description

Technical Field

[0001] This application relates to the field of stamping die technology, specifically to a stamping die for an aluminum foil lunch box. Background Technology

[0002] Aluminum foil food containers are a widely used type of tableware. The thickness of aluminum foil food containers is generally between 0.03mm and 0.20mm, and they can be divided into wrinkled and wrinkle-free types. They can also be divided into disposable and reusable types. In China, they are often called tin foil food containers. In reality, they are made from 3-series or 8-series aluminum ingots, which are cold-rolled or hot-rolled into aluminum foil master rolls with uniform thickness, a smooth surface, no pinholes, no dust particles, and no odor. These are then formed in a single, fully automated cold-stamping process using specialized equipment and molds.

[0003] The existing aluminum foil food box stamping dies have the following problems: In the actual stamping process, when the upper die leaves the lower die, the aluminum foil food box will move upward with the upper die. At this time, the friction between the aluminum foil food box and the upper die is large, which makes the demolding time of the aluminum foil food box longer and affects the production efficiency. Utility Model Content

[0004] To address the issue of long demolding times for existing aluminum foil lunch boxes, this application provides a stamping die for aluminum foil lunch boxes. The specific technical solution of this application is as follows:

[0005] A stamping die for an aluminum foil lunch box includes an upper die and a lower die. The upper die is movably disposed above the lower die. The lower die includes a base plate and a convex module, a lower top block, and a buffer block disposed on the base plate. The upper die includes a support plate and a concave module, an upper top block, and a punching block disposed on the support plate. The concave module is located above and covers the convex module. The lower top block is fixedly disposed on both sides of the convex module. The upper top block is fixedly disposed on both sides of the concave module and located directly above the lower top block. The punching block is movably disposed on both sides of the concave module, such that the upper top block is located between the punching blocks. The buffer block is disposed directly below the punching block and is used to support the punching block. The inner walls of the concave module are provided with outwardly expanding first inclined surfaces on both sides. The convex module is provided with a second inclined surface that cooperates with the first inclined surface.

[0006] Furthermore, the stamping die includes a support column, the support plate is movably mounted on the base plate via the support column, and a buffer spring is provided between the support plate and the support column.

[0007] Furthermore, the concave module is provided with a protrusion, and the convex module is provided with a groove that mates with the protrusion. When the protrusion and the groove are molded together, a protrusion is stamped out at the bottom of the lunch box.

[0008] Furthermore, the lower mold is provided with a lower platform, which is fixedly mounted above the base plate. A gap is provided between the lower platform and the convex module, and the buffer block is disposed in the gap. The upper mold is provided with an upper platform, which is movably mounted at the bottom of the support plate and located above the lower platform.

[0009] Furthermore, the stamping die includes a receiving seat, a connecting rod, and a connecting block. The receiving seat is located at the bottom of the base plate, one end of the connecting rod is located in the receiving seat, and the other end passes through the base plate and is connected to the buffer block through the connecting block.

[0010] Furthermore, the buffer block is fixedly connected to the connecting block by a screw, and a support spring is provided between the buffer block and the connecting block.

[0011] Furthermore, the angle between the first inclined plane and the horizontal plane is 75 degrees to 85 degrees.

[0012] Furthermore, the angle between the second inclined plane and the horizontal plane is 75 degrees to 85 degrees.

[0013] Compared with existing technologies, the advantages of this application are as follows: This application uses outwardly expanding first inclined surfaces on both sides of the inner wall of the concave module, which cooperate with the second inclined surface on the convex module, to stamp out aluminum foil lunch boxes. After stamping, when the upper mold leaves the lower mold, the outwardly expanding first inclined surfaces reduce the contact time between the lunch box and the upper mold during demolding, and also reduce the friction between the aluminum foil lunch box and the upper mold, allowing the aluminum foil lunch box to be ejected from the upper mold more smoothly. Moreover, due to the reduction in friction, the demolding time of the aluminum foil lunch box is significantly shortened, thereby significantly improving production efficiency. Due to the structure of the first inclined surface, the stress distribution on the aluminum foil lunch box during demolding is more uniform, avoiding deformation or damage to the aluminum foil lunch box caused by local stress concentration. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of a stamping die in one embodiment of this application;

[0015] Figure 2 This is a schematic cross-sectional view of the stamping die closing in one embodiment of this application;

[0016] Figure 3 As one embodiment of this application Figure 1 Enlarged diagram of point A. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0018] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and 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. They should not be construed as limiting the specific protection scope of this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" or "second" to define a feature may explicitly or implicitly include one or more of that feature, and in the description of this application, "at least" means one or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or 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 this application according to the specific circumstances.

[0021] In the application, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "below" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicating that the first feature is at a lower horizontal level than the second feature.

[0022] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of this application, making the technical solution and its beneficial effects clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, but should not be construed as limiting it.

[0023] like Figures 1 to 3As shown, this application provides a stamping die for aluminum foil lunch boxes, aiming to improve production efficiency, ensure product quality, and optimize die lifespan. The specific technical solution is as follows:

[0024] The stamping die for the aluminum foil lunchbox includes an upper die 1 and a lower die 2. The upper die 1 is movably disposed above the lower die 2 for stamping. The lower die 2 includes a base plate 3 and a protruding module 4, a lower ejector block 5, and a buffer block 6 disposed on the base plate 3. The upper die 1 includes a support plate 7 and a concave module 8, an upper ejector block 9, and a punching block 10 disposed on the support plate 7. The concave module 8 is located above and covers the protruding module 4, and is used to form the aluminum foil when the upper die 1 and the lower die 2 are closed. The lower ejector block 5 is fixedly disposed on both sides of the protruding module 4. The upper ejector block 9 is fixedly disposed on both sides of the concave module 8 and located directly above the lower ejector block 5. When the die is closed, the upper ejector block 9 and the lower ejector block 5 provide stable support and form the edge of the lunchbox during the stamping process. The punching blocks 10 are movably disposed on both sides of the concave module 8 and the upper top block 9 is located between the punching blocks 10 for punching aluminum foil. The buffer block 6 is disposed directly below the punching blocks 10 for supporting the punching blocks 10 after mold closing, reducing the impact force during the stamping process and extending the mold life.

[0025] The inner wall of the concave module 8 has outwardly expanding first inclined surfaces 11 on both sides, and the convex module 4 has a second inclined surface 12 that cooperates with the first inclined surface 11. This inclined surface design helps to reduce the friction between the lunch box and the concave module 8 and the contact time between the lunch box and the concave mold during the demolding process after stamping, thereby improving the demolding efficiency of the lunch plate, achieving more uniform material flow during stamping, and improving the forming quality.

[0026] In one embodiment, the stamping die includes a support column 13, and the support plate 7 is movably mounted on the base plate 3 via the support column 13. A buffer spring 14 is provided between the support plate 7 and the support column. This design can effectively absorb the impact force during the stamping process, reduce die wear, and improve the service life of the die.

[0027] In one embodiment, the recessed module 8 is provided with a protrusion 15, and the protruding module 4 is provided with a groove 16 that mates with the protrusion 15. When the protrusion 15 and the groove 16 are molded together, a protruding part is stamped out at the bottom of the lunch box. This design can realize complex bottom structures of lunch boxes, improving the aesthetics and practicality of the product.

[0028] In one embodiment, the lower mold 2 is provided with a lower platform 17, which is fixedly mounted above the base plate 3. A gap 18 is provided between the lower platform 17 and the convex module 4, and a buffer block 6 is disposed in the gap 18. The upper mold 1 is provided with an upper platform 19, which is movably mounted at the bottom of the support plate 7 and located above the lower platform 17. The punching block 10 extends through the gap into the lower platform and pushes the buffer block 6 into the lower platform. The punching block performs the punching function with the lower top block 5 and the lower platform 17 respectively. This design further optimizes the mold structure and improves the stability of the stamping process.

[0029] In one embodiment, the stamping die includes a receiving seat 20, a connecting rod 21, and a connecting block 22. The receiving seat 20 is disposed at the bottom of the base plate 3. One end of the connecting rod 21 is disposed in the receiving seat 20, and the other end passes through the base plate 3 and is connected to the buffer block 6 via the connecting block 22. This design facilitates the installation and adjustment of the buffer block 6 and improves the flexibility of the die.

[0030] In one embodiment, the buffer block 6 is fixedly connected to the connecting block 22 via a screw 23, and a support spring 24 is provided between the buffer block 6 and the connecting block 22. This design can further absorb the impact force during the stamping process and improve the service life of the mold.

[0031] In one embodiment, the angle between the first inclined plane 11 and the horizontal plane is 75 to 85 degrees. Preferably, the angle between the first inclined plane 11 and the horizontal plane is 81 degrees. This angle design achieves optimal demolding efficiency for the lunchbox.

[0032] In one embodiment, the angle between the second inclined plane 12 and the horizontal plane is 75 to 85 degrees. Preferably, the angle between the second inclined plane 12 and the horizontal plane is 81 degrees. This angle design, in conjunction with the first inclined plane 11, further optimizes material flow during the stamping process and ensures forming quality.

[0033] This application uses outwardly expanding first inclined surfaces 11 on both sides of the inner wall of the concave module 8, which cooperate with the second inclined surface 12 on the convex module 4, to stamp out aluminum foil lunch boxes. After stamping, when the upper mold 1 leaves the lower mold 2, the outwardly expanding first inclined surfaces 11 reduce the contact time between the lunch box and the upper mold 1 during the demolding process, and also reduce the friction between the aluminum foil lunch box and the upper mold 1. This allows the aluminum foil lunch box to be ejected from the upper mold 1 more smoothly, and the demolding time is significantly shortened due to the reduced friction, thereby significantly improving production efficiency. Due to the structure of the first inclined surface 11, the stress distribution on the aluminum foil lunch box during demolding is more uniform, avoiding deformation or damage to the aluminum foil lunch box caused by local stress concentration.

[0034] In the description of this specification, the terms "in one embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The connection methods linked in the description of this specification have significant effects and practical utility.

[0035] Based on the above description of the structure and principles, those skilled in the art should understand that this application is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this application all fall within the protection scope of this application and should be defined by the claims.

Claims

1. A punch die for an aluminum foil meal box, comprising: The upper die and the lower die, the upper die is movably arranged above the lower die, characterized in that the lower die comprises a bottom plate and a convex die module, a lower ejector and a buffer block arranged on the bottom plate, the upper die comprises a support plate and a concave die module, an upper ejector and a punching block arranged on the support plate, the concave die module is arranged above and covers the convex die module, the lower ejector is fixedly arranged on both sides of the convex die module, the upper ejector is fixedly arranged on both sides of the concave die module and directly above the lower ejector, the punching block is movably arranged on both sides of the concave die module and makes the upper ejector between the punching block, the buffer block is arranged directly below the punching block and used for supporting the punching block, the inner wall of the concave die module is provided with a first inclined surface expanding outward on both sides, and the convex die module is provided with a second inclined surface matched with the first inclined surface.

2. The stamping die for aluminum foil containers according to claim 1, characterized by The stamping die comprises a support column, the support plate is movably arranged on the bottom plate through the support column, and a buffer spring is arranged between the support plate and the support column.

3. The stamping die for aluminum foil containers according to claim 1, characterized by The concave die module is provided with a protrusion, the convex die module is provided with a groove matched with the protrusion, and a protruding part is stamped on the bottom of the meal box when the protrusion and the groove are matched.

4. The stamping die for aluminum foil containers according to claim 3, characterized by The lower die is provided with a lower platform, the lower platform is fixedly arranged above the bottom plate, a gap is arranged between the lower platform and the convex die module, the buffer block is arranged in the gap, the upper die is provided with an upper platform, and the upper platform is movably arranged at the bottom of the support plate and above the lower platform.

5. The stamping die for aluminum foil containers according to claim 1, characterized by The stamping die comprises a containing seat, a connecting rod and a connecting block, the containing seat is arranged at the bottom of the bottom plate, one end of the connecting rod is arranged in the containing seat, the other end penetrates through the bottom plate and is connected with the buffer block through the connecting block.

6. The stamping die for aluminum foil containers according to claim 5, wherein The buffer block is fixedly connected with the connecting block through a screw rod, and a supporting spring is arranged between the buffer block and the connecting block.

7. The stamping die for aluminum foil containers according to claim 1, characterized by The included angle between the first inclined surface and the horizontal plane is 75-85 degrees.

8. The stamping die for aluminum foil containers according to claim 1, characterized by The included angle between the second inclined surface and the horizontal plane is 75-85 degrees.

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