Aluminum veneer and forming process thereof

Abstract

The application relates to the technical field of aluminum veneer and discloses an aluminum veneer which comprises a plate surface main body, a folded edge arranged at the edge of the plate surface main body and a reinforcing structure arranged at the back of the plate surface main body. The reinforcing structure comprises a large-area stabilizing area arranged at the large-area region of the plate surface main body and a folded edge adjacent area arranged between the large-area stabilizing area and the folded edge; the large-area stabilizing area is provided with a plurality of long-strip-shaped reinforcing ribs which extend along a first direction and are arranged at intervals; the folded edge adjacent area is provided with an edge connecting rib arranged along the extension direction of the folded edge, a first group of short-strip-shaped transition ribs connected with the folded edge and a second group of short-strip-shaped transition ribs connected with the edge connecting rib; the first group of short-strip-shaped transition ribs and the second group of short-strip-shaped transition ribs are arranged at intervals along the extension direction of the folded edge and are arranged in a staggered mode. The application can improve the rigidity of the large-area region, improve the rigidity transition of the folded edge adjacent area, reduce stress concentration, inhibit edge warping and local deformation.

Description

Technical Field

[0001] This invention relates to the field of aluminum single-panel technology, specifically to an aluminum single-panel and its forming process. Background Technology

[0002] Aluminum single-layer panels are widely used in building curtain walls, interior decoration, ceilings, and various enclosure and cladding structures due to their lightweight, corrosion resistance, ease of processing and shaping, and good decorative effect. Common aluminum single-layer panels typically consist of a main panel surface and folded edges formed by bending along the edges of the main panel surface. These folded edges are used to increase the edge strength of the panel and provide a foundation for the installation and connection of the aluminum single-layer panel.

[0003] In applications with large dimensions or long installation spans, the thickness of the aluminum panel itself is insufficient to meet the requirements for flatness and deformation resistance. Therefore, existing technologies typically incorporate reinforcing structures on the back of the aluminum panel. For example, several reinforcing ribs may be placed on the large surface area of ​​the panel, or continuous reinforcing ribs may be placed near the edges to improve the overall rigidity and load-bearing stability of the aluminum panel.

[0004] However, existing aluminum composite panels often focus on overall reinforcement of large areas or use continuous stiffeners extending directly to the edge. While this type of structure can improve local stiffness to some extent, it often lacks a proper transition reinforcement design between the large reinforced area and the edge, easily leading to abrupt stiffness changes in the vicinity of the edge. Especially when continuous stiffeners or high-stiffness reinforcement structures are placed close to the edge, stress concentration easily occurs at the root of the edge and its adjacent area, resulting in problems such as edge warping, uneven local deformation, and decreased flatness in the vicinity of the edge during bending, transportation, installation, or long-term use.

[0005] Furthermore, the folded edge area is typically where stress is concentrated during the forming and installation of aluminum panels. After the panel is bent, residual stress will be generated at the root of the fold; during subsequent installation and fixing, or when subjected to external forces such as temperature changes, wind loads, and vibrations, this area may undergo further micro-deformation. If the area adjacent to the folded edge is reinforced only with a continuous, single reinforcing structure, although the local connection strength can be enhanced, it is not conducive to the release of local stress and may instead exacerbate the deformation difference between the main surface area and the folded edge area.

[0006] Therefore, how to improve the transition structure between the reinforced area and the edge fold while ensuring sufficient support strength and overall rigidity of the large surface area of ​​the aluminum panel, reduce the stiffness abrupt change and stress concentration in the area adjacent to the fold, and suppress edge warping and local deformation are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0007] To address the aforementioned problems, the present invention provides an aluminum single panel, comprising a panel body, a folded edge disposed on the edge of the panel body, and a reinforcing structure disposed on the back side of the panel body;

[0008] The reinforcing structure includes a large surface stabilization area disposed in the main surface area of ​​the plate and a folded edge adjacent area disposed between the large surface stabilization area and the folded edge;

[0009] The large-area stable region is provided with a plurality of elongated reinforcing ribs, which extend along the first direction and are arranged at intervals.

[0010] The adjacent area of ​​the folded edge is provided with an edge connecting rib, a first group of short strip transition ribs and a second group of short strip transition ribs. The edge connecting ribs are arranged along the extension direction of the folded edge. The first group of short strip transition ribs is arranged close to the folded edge and connected to the folded edge. The second group of short strip transition ribs is arranged close to the edge connecting ribs and connected to the edge connecting ribs. The first group of short strip transition ribs and the second group of short strip transition ribs are arranged at intervals and staggered with each other along the extension direction of the folded edge.

[0011] The first group of short strip transition ribs and the second group of short strip transition ribs each have a connecting end and a free end. The connecting end of the first group of short strip transition ribs is connected to the folded edge, and its free end forms a first separation gap with the edge connecting rib. The connecting end of the second group of short strip transition ribs is connected to the edge connecting rib, and its free end forms a second separation gap with the folded edge.

[0012] The end of the folded edge forms a triangular support cavity.

[0013] The triangular support cavity is located in the corner area of ​​the main body of the plate and is disposed adjacent to the folded edge.

[0014] The large surface stability zone is provided with shallow rib units, which are low-depth ribs arranged continuously or at intervals, and the low-depth ribs extend along the length direction, width direction or preset force direction of the main body of the plate surface.

[0015] Includes the following steps:

[0016] Provide aluminum alloy sheet blanks;

[0017] The aluminum alloy sheet blank is subjected to partitioned pressing and forming to form multiple long strip-shaped reinforcing ribs located in the large surface stable area, edge connecting ribs located in the folded edge adjacent area, a first group of short strip-shaped transition ribs located near the predetermined bending line, and a second group of short strip-shaped transition ribs located near the edge connecting ribs. The first group of short strip-shaped transition ribs and the second group of short strip-shaped transition ribs are arranged at intervals and interleaved along the extension direction of the predetermined bending line.

[0018] The aluminum alloy sheet blank is bent along a predetermined bending line to form a folded edge;

[0019] After bending and forming, the adhesive is selectively applied to the connection area between the first group of short strip transition ribs and the folded edge, and to the connection area between the second group of short strip transition ribs and the edge connecting ribs, and the adhesive is cured to form a local adhesive layer.

[0020] The first separation gap between the free end of the first group of short strip transition ribs and the edge connecting rib, and the second separation gap between the free end of the second group of short strip transition ribs and the folded edge, remain unbonded.

[0021] The local adhesive layer is distributed at intervals along the extension direction of the folded edge and is correspondingly disposed in the adjacent area of ​​the connection end of the first group of short strip transition ribs and the second group of short strip transition ribs, so that the adjacent area of ​​the folded edge forms a connection end stiffness enhancement area and a free end deformation release area located at the first separation gap and the second separation gap.

[0022] The technical solution of this invention has the following advantages:

[0023] This application's aluminum single-panel design divides the reinforcing structure into a large-area stable zone and an edge-adjacent zone, allowing the main surface area of ​​the panel and the edge area near the edge to receive separate reinforcement support. The large-area stable zone features multiple elongated reinforcing ribs extending along a first direction and spaced apart, which improves the overall stiffness and flexural resistance of the main surface area, thereby enhancing the flatness retention of the aluminum single-panel. The edge-adjacent zone features edge connecting ribs arranged along the edge extension direction, and a first set and a second set of short transition ribs connected to the edge and edge connecting ribs, respectively. Because the two sets of short transition ribs are spaced apart and staggered along the edge extension direction, a dispersed transition support structure is formed between the large-area stable zone and the edge, preventing the formation of a continuous high-stiffness reinforcing band in the edge-adjacent zone. Therefore, this application can ensure the support strength of the large surface area of ​​the aluminum single-panel while reducing abrupt stiffness changes and stress concentrations between the large surface area and the edge, suppressing warping and local deformation in the edge-adjacent area, thereby improving the structural stability and reliability of the aluminum single-panel. Attached Figure Description

[0024] Figure 1 This is a perspective view of the aluminum single panel in the embodiments of this application;

[0025] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0026] Figure 3 This is a side view of the aluminum panel in an embodiment of this application;

[0027] Figure 4 This is a top view of the aluminum panel in an embodiment of this application;

[0028] Figure 5 This is a flowchart of the aluminum single-panel forming process in the embodiments of this application. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: See Figure 1-4 An aluminum panel includes a panel body 10, flanges 20 disposed along the edges of the panel body 10, and a reinforcing structure disposed on the back of the panel body 10. The panel body 10 forms the exterior surface and main load-bearing surface of the aluminum panel. The flanges 20 are disposed along the periphery of the panel body 10 to improve the edge structural strength and facilitate installation and fixing. The reinforcing structure is formed on the back of the panel body 10 to improve the overall rigidity, flatness retention, and deformation resistance of the panel body 10.

[0031] Specifically, the reinforced structure includes a large-area stabilization zone 31 located on the main surface of the panel 10, and an edge-adjacent zone 32 located between the large-area stabilization zone 31 and the folded edge 20. The large-area stabilization zone 31 is mainly used to improve the anti-bulging ability, anti-flexural ability, and overall flatness of the large area of ​​the main surface of the panel 10; the edge-adjacent zone 32 is mainly used to realize the structural transition between the main surface of the panel 10 and the folded edge 20, so that the area near the folded edge 20 can obtain sufficient support while reducing local stress concentration.

[0032] The large-area stabilization zone 31 is provided with multiple elongated reinforcing ribs 311, which extend along the first direction and are arranged at intervals. These elongated reinforcing ribs 311 can be arranged in parallel on the back of the main body 10 to form a continuous reinforcement path in the large-area area. By spaced out the multiple elongated reinforcing ribs 311, the overall rigidity and weight requirements can be considered while controlling the difficulty of material forming.

[0033] The adjacent area 32 of the folded edge is provided with an edge connecting rib 321, a first group of short strip transition ribs 322, and a second group of short strip transition ribs 323. The edge connecting rib 321 is arranged along the extension direction of the folded edge 20, preferably extending continuously or segmentally along the corresponding side, to form a connection and support path for the edge in the adjacent area 32 of the folded edge. The first group of short strip transition ribs 322 is arranged close to and connected to the folded edge 20, and the second group of short strip transition ribs 323 is arranged close to and connected to the edge connecting rib 321. The first group of short strip transition ribs 322 and the second group of short strip transition ribs 323 are arranged at intervals and staggered along the extension direction of the folded edge 20.

[0034] The first group of short strip transition ribs 322 and the second group of short strip transition ribs 323 each have a connecting end and a free end. The connecting end of the first group of short strip transition ribs 322 is connected to the folded edge 20, and its free end forms a first separation gap 324 with the edge connecting rib 321; the connecting end of the second group of short strip transition ribs 323 is connected to the edge connecting rib 321, and its free end forms a second separation gap 325 with the folded edge 20. By setting the first separation gap 324 and the second separation gap 325, the first group of short strip transition ribs 322 and the second group of short strip transition ribs 323 do not form a continuous closed high-rigidity connecting band in the adjacent area 32 of the folded edge. This ensures that the adjacent area 32 of the folded edge has supporting capacity while reserving space for local deformation release, reducing the risk of stress concentration at the root of the folded edge 20 and the adjacent area of ​​the edge.

[0035] In this embodiment, the first group of short strip transition ribs 322 and the second group of short strip transition ribs 323 are distributed at intervals and intersect each other along the extension direction of the folded edge 20. In other words, in the extension direction of the folded edge 20, some of the first group of short strip transition ribs 322 are located between two adjacent second group of short strip transition ribs 323, and some of the second group of short strip transition ribs 323 are located between two adjacent first group of short strip transition ribs 322. This interlaced arrangement makes the adjacent area 32 of the folded edge form a discontinuous and dispersed transition support structure, which is conducive to establishing a stiffness distribution that gradually transitions from the folded edge 20 to the large stable area 31 in the edge region, avoiding the problems of excessive hardness, stress accumulation, or warping after bending caused by traditional continuous ribs or whole-section reinforced structures.

[0036] In this embodiment, a triangular support cavity 40 is formed at the end of the folded edge 20. Preferably, the triangular support cavity 40 is located in the corner area of ​​the main body 10 of the panel and is disposed adjacent to the folded edge 20. The triangular support cavity 40 can be formed by adjacent side segments of the corner folded edge 20, which is used to enhance the spatial stability and anti-collapse ability of the corner position of the aluminum panel. Since the corner area is usually a location where stress is superimposed and installation force is concentrated, the triangular support cavity 40 can effectively improve the corner stiffness and improve the deformation control effect of the corner during transportation, installation or long-term use.

[0037] The large-area stabilization zone 31 is equipped with shallow rib units, which are low-depth ribs arranged continuously or at intervals. These low-depth ribs extend along the length, width, or predetermined stress direction of the main body 10 of the panel. The shallow rib units, together with the aforementioned multiple elongated reinforcing ribs 311, constitute the reinforcement system of the large-area stabilization zone 31. Compared with local rib structures with greater depth, the shallow rib units, while ensuring the stability of the large-area region of the main body 10 of the panel, help reduce stress mapping on the appearance surface, reduce residual stress during forming, and also meet the requirements for the flatness of the decorative surface.

[0038] The aluminum panel incorporates elongated reinforcing ribs 311 in the large-area stability zone 31, and edge connecting ribs 321, a first set of short transition ribs 322, and a second set of short transition ribs 323 in the edge-adjacent zone 32. A first separation gap 324 and a second separation gap 325 create an interlaced, discontinuous transition structure between the two sets of short transition ribs, resulting in a smoother transition between the large-area stiffness and edge stiffness of the panel body 10. This improves the overall structural strength and flatness of the aluminum panel while reducing stress concentration in the edge-adjacent zone 32, thus enhancing the deformation resistance and stability of the edge area.

[0039] Example 2: See Figure 5 A forming process for aluminum single-panel, the forming process includes the following steps:

[0040] S1. Provide aluminum alloy sheet blanks;

[0041] Select aluminum alloy sheet blanks of predetermined thickness and specifications as the initial sheet material. The material, thickness, and dimensions of the aluminum alloy sheet blanks can be set according to the application scenario, installation span, load requirements, and decorative needs of the aluminum single panel.

[0042] S2. Partition pressing and forming on the back of the aluminum alloy sheet blank;

[0043] Specifically, multiple long strip-shaped reinforcing ribs located in the large-area stable zone, edge connecting ribs located in the adjacent zone of the folded edge, a first group of short strip-shaped transition ribs positioned near the predetermined bending line, and a second group of short strip-shaped transition ribs positioned near the edge connecting ribs are formed on the back of the aluminum alloy sheet blank. The first group of short strip-shaped transition ribs and the second group of short strip-shaped transition ribs are arranged at intervals and interleaved along the extension direction of the predetermined bending line.

[0044] In this step, multiple long strip-shaped reinforcing ribs in the large-area stability zone can be formed by continuous pressing or segmented pressing to ensure stable flexural support in the main surface area of ​​the board. Edge connecting ribs in the adjacent area of ​​the folded edge are used to establish edge reinforcement paths near the folded edge. The first and second groups of short strip-shaped transition ribs are arranged in an alternating manner during the pressing process, located on the folded edge side and the edge connecting rib side respectively, so as to form corresponding connection relationships and separation gap structures after subsequent bending.

[0045] S3. Bend along the predetermined bending line of the aluminum alloy sheet blank to form a folded edge;

[0046] After bending, the edge of the sheet metal forms a folded edge. A first set of short strip transition ribs is located near the folded edge and connected to it. A second set of short strip transition ribs is located near the edge connecting ribs and connected to them. Simultaneously, a first separation gap is formed between the free end of the first set of short strip transition ribs and the edge connecting ribs, and a second separation gap is formed between the free end of the second set of short strip transition ribs and the folded edge. Through this structural relationship, a discontinuous transition support structure is formed in the vicinity of the folded edge, spaced apart along the folded edge extension direction.

[0047] S4. After bending and forming, selectively apply adhesive and cure to form a local adhesive layer;

[0048] Specifically, adhesive is selectively applied to the connection areas between the first group of short strip transition ribs and the folded edge, and to the connection areas between the second group of short strip transition ribs and the edge connecting ribs, and the adhesive is cured to form a local adhesive layer. The first separation gap between the free end of the first group of short strip transition ribs and the edge connecting rib, and the second separation gap between the free end of the second group of short strip transition ribs and the folded edge, remain unbonded.

[0049] In this embodiment, the local adhesive layers are distributed at intervals along the extension direction of the folded edge and are correspondingly disposed in the area adjacent to the connection ends of the first group of short strip transition ribs and the second group of short strip transition ribs. This creates a connection end stiffness enhancement zone and a free end deformation release zone located at the first and second separation gaps within the area adjacent to the folded edge. The connection end stiffness enhancement zone improves the bonding stability and local load-bearing capacity at the connection between the first group of short strip transition ribs and the folded edge, and at the connection between the second group of short strip transition ribs and the edge connecting ribs; the free end deformation release zone provides space for the release of local micro-deformation under temperature changes, installation stress, or vibration conditions, thereby reducing stress accumulation at the edge.

[0050] The adhesive used can be a structural adhesive or an elastic adhesive material suitable for connecting metal components. Preferably, the adhesive has a certain bonding strength and deformation adaptability, so as to buffer local deformation while ensuring connection stability. By using a selective adhesive application method, instead of applying adhesive to the entire area near the fold, the formation of a continuous rigid connection layer in the entire area near the fold can be avoided, thereby maintaining the discontinuous stiffness transition characteristics formed by the staggered short strip transition ribs and the separation gap.

[0051] In this embodiment, the local adhesive layer, combined with the staggered distribution of the first and second sets of short strip transition ribs, creates a composite structural effect of "local reinforcement at the connection end and local release at the free end" in the vicinity of the folded edge. Compared to conventional edge structures formed solely through ribs and bending, this process further improves the local stability of the folded edge area, reduces the tendency for springback or edge warping after bending, and enhances the vibration resistance and long-term dimensional stability of the aluminum panel during installation and use.

[0052] By using zoned reinforcement, bending and forming, and selective adhesive curing after bending, the aluminum panel is stably reinforced in the large area, and staggered transition support and local adhesive reinforcement are obtained in the adjacent area of ​​the folded edge. By retaining the first separation gap and the second separation gap to form a free end deformation release zone, a balance is achieved between overall stiffness, edge stability and stress relief capability.

[0053] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An aluminum single-layer panel, characterized in that, It includes a main plate body, a folded edge disposed on the edge of the main plate body, and a reinforcing structure disposed on the back of the main plate body; The reinforcing structure includes a large surface stabilization area disposed in the main surface area of ​​the plate and a folded edge adjacent area disposed between the large surface stabilization area and the folded edge; The large-area stable region is provided with a plurality of elongated reinforcing ribs, which extend along the first direction and are arranged at intervals. The adjacent area of ​​the folded edge is provided with an edge connecting rib, a first group of short strip transition ribs and a second group of short strip transition ribs. The edge connecting ribs are arranged along the extension direction of the folded edge. The first group of short strip transition ribs is arranged close to the folded edge and connected to the folded edge. The second group of short strip transition ribs is arranged close to the edge connecting ribs and connected to the edge connecting ribs. The first group of short strip transition ribs and the second group of short strip transition ribs are arranged at intervals and staggered with each other along the extension direction of the folded edge.

2. The aluminum single-layer panel according to claim 1, characterized in that, The first group of short strip transition ribs and the second group of short strip transition ribs each have a connecting end and a free end. The connecting end of the first group of short strip transition ribs is connected to the folded edge, and its free end forms a first separation gap with the edge connecting rib. The connecting end of the second group of short strip transition ribs is connected to the edge connecting rib, and its free end forms a second separation gap with the folded edge.

3. The aluminum single-layer panel according to claim 1, characterized in that, The end of the folded edge forms a triangular support cavity.

4. The aluminum single-layer panel according to claim 3, characterized in that, The triangular support cavity is located in the corner area of ​​the main body of the plate and is disposed adjacent to the folded edge.

5. The aluminum single-layer panel according to claim 1, characterized in that, The large surface stability zone is provided with shallow rib units, which are low-depth ribs arranged continuously or at intervals, and the low-depth ribs extend along the length direction, width direction or preset force direction of the main body of the plate surface.

6. The forming process of the aluminum single panel according to claim 1, characterized in that, Includes the following steps: Provide aluminum alloy sheet blanks; The aluminum alloy sheet blank is subjected to partitioned pressing and forming to form multiple long strip-shaped reinforcing ribs located in the large surface stable area, edge connecting ribs located in the folded edge adjacent area, a first group of short strip-shaped transition ribs located near the predetermined bending line, and a second group of short strip-shaped transition ribs located near the edge connecting ribs. The first group of short strip-shaped transition ribs and the second group of short strip-shaped transition ribs are arranged at intervals and interleaved along the extension direction of the predetermined bending line. The aluminum alloy sheet blank is bent along a predetermined bending line to form a folded edge; After bending and forming, the adhesive is selectively applied to the connection area between the first group of short strip transition ribs and the folded edge, and to the connection area between the second group of short strip transition ribs and the edge connecting ribs, and the adhesive is cured to form a local adhesive layer. The first separation gap between the free end of the first group of short strip transition ribs and the edge connecting rib, and the second separation gap between the free end of the second group of short strip transition ribs and the folded edge, remain unbonded.

7. The molding process according to claim 6, characterized in that, The local adhesive layer is distributed at intervals along the extension direction of the folded edge and is correspondingly disposed in the adjacent area of ​​the connection end of the first group of short strip transition ribs and the second group of short strip transition ribs, so that the adjacent area of ​​the folded edge forms a connection end stiffness enhancement area and a free end deformation release area located at the first separation gap and the second separation gap.

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