Three-dimensional composite integrated plate and production process thereof

Abstract

The three-dimensional composite integrated plate comprises a plate body, the plate body comprises a three-dimensional aluminum core layer and two aluminum alloy plate layers, the three-dimensional aluminum core layer is located between the two aluminum alloy plate layers, bent protruding parts are alternately formed on the two sides of the three-dimensional aluminum core layer, and the bent protruding parts are arranged in the length direction of the three-dimensional aluminum core layer. The protruding directions of the bent protruding parts are alternately opposite. The bent protruding parts and the aluminum alloy plate layers on the corresponding sides abut against each other and are fixed in a bonding mode. The three-dimensional aluminum core layer adopts the aluminum plate as a raw material, and the aluminum plate is extruded and bent, so that the three-dimensional aluminum core layer can form a three-dimensional structure; the three-dimensional aluminum core layer is compounded between the two aluminum alloy plate layers, so that the overall thickness of the plate body can be increased, and the overall strength performance of the plate body can also be improved.

Description

Technical Field

[0001] This invention relates to an aluminum sheet, and more specifically, to a three-dimensional composite integrated plate, and also to a manufacturing process for the three-dimensional composite integrated plate. Background Technology

[0002] Aluminum alloy sheets are typically thin. To increase the overall thickness, a multi-layer composite method is often used, which involves adding an internal interlayer. Currently, a common practice is to laminate an aluminum interlayer between two aluminum alloy sheets and use a roll forming process to process this interlayer into a three-dimensional structure, usually in a corrugated shape.

[0003] In subsequent multilayer lamination processes, sufficient pressure needs to be applied to each layer of the sheet material to ensure strong interlayer adhesion and tight bonding. However, due to the limited structural strength of the intermediate three-dimensional aluminum layer, it is prone to extrusion deformation when subjected to pressure in the thickness direction. This deformation not only weakens the overall structural stability of the aluminum filler layer but may also cause slight slippage at the pressure points between the filler layer and the aluminum alloy sheets on both sides during the deformation process. Such slippage directly affects the integrity of the bonding interface, thereby reducing the overall bonding performance of the composite structure.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a three-dimensional composite integrated plate and its manufacturing process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a three-dimensional composite integrated plate, comprising a plate body, the plate body comprising a three-dimensional aluminum core layer and two aluminum alloy plate layers, the three-dimensional aluminum core layer being located between the two aluminum alloy plate layers, the three-dimensional aluminum core layer having alternating bent protrusions formed on both sides, the protrusion directions of the bent protrusions being alternately opposite along the length direction of the three-dimensional aluminum core layer; the bent protrusions and the corresponding aluminum alloy plate layers abut against each other and are bonded and fixed.

[0007] The present invention is further configured such that a limiting groove is formed on the side of the bent protrusion facing away from the protrusion, and a limiting space is formed between the limiting groove and the aluminum alloy plate layer on the corresponding side.

[0008] The present invention is further configured such that each bending protrusion is a strip-shaped structure arranged along the width direction of the three-dimensional aluminum core layer; and each bending protrusion is uniformly arranged along the length direction of the three-dimensional aluminum core layer.

[0009] The present invention is further configured such that the bending protrusion includes a protruding flat portion and inclined portions on both sides of the flat portion, wherein the flat portion is bonded and fixed to the aluminum alloy plate layer on the corresponding side.

[0010] The present invention is further configured such that a plurality of limiting protrusions are fixedly connected to the side of the aluminum alloy plate layer facing the three-dimensional aluminum core layer, and limiting protrusions are respectively provided on both sides of each bending protrusion, and a limiting groove is formed between two limiting protrusions. The width of the limiting groove is adapted to the bending protrusion, and the bending protrusion can be embedded in the limiting groove between the two limiting protrusions to achieve positioning.

[0011] The present invention is further configured such that the limiting protrusion is a strip-shaped protrusion structure arranged along the width direction of the aluminum alloy plate, and each limiting protrusion is arranged sequentially along the direction of the aluminum alloy plate.

[0012] The present invention is further configured such that the limiting protrusion is a hot melt adhesive material; the flat part of the bending protrusion is bonded to the aluminum alloy plate layer by a thermosetting adhesive.

[0013] The present invention also provides a manufacturing process for a three-dimensional composite integrated plate, used to produce the three-dimensional composite integrated plate as described above; the manufacturing process includes the following steps:

[0014] Step 1: Apply hot melt adhesive to the surface of the aluminum alloy plate facing the three-dimensional aluminum core layer to form a limiting protrusion;

[0015] Step 2: Bend the three-dimensional aluminum core layer to form uniformly distributed bent protrusions on the surface of the three-dimensional aluminum core layer;

[0016] Step 3: Apply thermosetting adhesive to the flat surface of the bent protrusion of the three-dimensional aluminum core layer;

[0017] Step 4: Composite the two aluminum alloy plates with the three-dimensional aluminum core layer. The three-dimensional aluminum core layer is located between the two aluminum alloy plates, and the flat part of the bent protrusion is precisely embedded between the two limiting protrusions to form a positioning.

[0018] Step 5: Press the two aluminum alloy plates and the three-dimensional aluminum core layer together with the pressure rollers, and send them into the hot drying device for heat curing. Use heat curing adhesive to bond and fix the flat part of the bent protrusion to the aluminum alloy plate.

[0019] The invention is further configured such that, in step 5, two layers of aluminum alloy plates and a three-dimensional aluminum core layer are stacked to form a plate, and the plate is conveyed upward along an inclined path; a sprayer is installed on the upper side of the plate, corresponding to the front position of the hot drying device; the sprayer can spray cooling water onto the surface of the plate, forming a spray water curtain on the surface of the plate; a hot drying channel is formed inside the hot drying device; a hot air blower and a return air vent are respectively provided on both sides of the plate in the hot drying channel, and hot air is formed in the hot drying channel along the width direction of the plate, and the hot air flows through the inner side of the plate for heating.

[0020] The present invention is further configured such that the limiting protrusion formed by hot melt adhesive coating is heated and melted in a hot drying device, and after cooling, the aluminum alloy plate layer and the bent protrusion are bonded and fixed.

[0021] In summary, the present invention has the following beneficial effects:

[0022] The three-dimensional aluminum core layer uses aluminum sheet as raw material. By extruding and bending the aluminum sheet, the three-dimensional aluminum core layer can form a three-dimensional structure. Composite the three-dimensional aluminum core layer between two aluminum alloy sheet layers can increase the overall thickness of the sheet and improve the overall strength performance of the sheet.

[0023] Several limiting protrusions are fixedly connected to the surface of the aluminum alloy sheet, with two limiting protrusions forming a group. These two limiting protrusions provide limiting support for the bent protrusions. When the three-dimensional aluminum core layer is composited with the two aluminum alloy sheet layers, the bent protrusions of the three-dimensional aluminum core layer are embedded between the two limiting protrusions. This ensures that each bent protrusion has two supporting limiting measures, preventing the pressure during composite molding from causing extrusion deformation of the three-dimensional aluminum core layer and maintaining its stability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a three-dimensional composite integrated plate in this embodiment;

[0025] Figure 2 This is an exploded view of a three-dimensional composite integrated plate in this embodiment;

[0026] Figure 3 This is a schematic diagram of a three-dimensional composite integrated plate and a limiting protrusion in this embodiment;

[0027] Figure 4 This is an exploded view of a three-dimensional composite integrated plate and a limiting protrusion in this embodiment;

[0028] Figure 5 This is a schematic diagram of the conveying structure of the plate in the hot drying device in this embodiment;

[0029] Figure 6 This is a cross-sectional schematic diagram of the interior of the hot drying channel in this embodiment.

[0030] Reference numerals: Plate 100; Middle section 101; Aluminum alloy plate layer 1; Limiting protrusion 2; Limiting groove 21; Three-dimensional aluminum core layer 3; Bending protrusion 31; Bending groove 32; Flat part 33; Inclined part 34; Sprayer 4; Spray water curtain 41; Hot drying device 5; Hot drying channel 51; Hot air blower 52; Return air outlet 53; Circulating air duct 51; Preheating section 501; Curing section 502; Pressure roller 6. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0032] This embodiment discloses a three-dimensional composite integrated plate, as shown in Figure 1- Figure 4 As shown, it includes a plate 100, which includes a three-dimensional aluminum core layer 3 and two aluminum alloy plate layers 1, forming a three-layer composite structure.

[0033] Among them, the three-dimensional aluminum core layer 3 is located between the two aluminum alloy plate layers 1. The three-dimensional aluminum core layer 3 uses aluminum plate as raw material. By extruding and bending the aluminum plate, the three-dimensional aluminum core layer 3 can form a three-dimensional structure. The three-dimensional aluminum core layer 3 can be composited between the two aluminum alloy plate layers 1 to increase the overall thickness of the plate 100 and improve the overall strength performance of the plate 100.

[0034] In this embodiment, bent protrusions 31 are alternately formed on both sides of the three-dimensional aluminum core layer 3. Specifically, during the production process, the bent protrusions 31 on the surface of the three-dimensional aluminum core layer 3 can be formed by roll forming; after roll forming, the protruding directions of the bent protrusions 31 are alternately opposite along the length direction of the three-dimensional aluminum core layer 3. (Refer to...) Figure 1 , Figure 2 As shown, from left to right, the length of the three-dimensional aluminum core layer 3 is shown. The first bent protrusion 31 is raised upwards, the second bent protrusion 31 is raised downwards, and then they are arranged alternately to form a three-dimensional raised structure, which can significantly improve the thickness dimension of the three-dimensional aluminum core layer 3.

[0035] Reference Figure 2 As shown, each bent protrusion 31 is a strip-shaped structure arranged along the width direction of the three-dimensional aluminum core layer 3; each bent protrusion 31 is evenly arranged along the length direction of the three-dimensional aluminum core layer 3.

[0036] The bent protrusion 31 presses against the aluminum alloy plate 1 on the corresponding side and is bonded and fixed at the contact point, thereby enabling the three layers of plates to be combined to form an integrated three-dimensional composite plate.

[0037] Corresponding to the bent protrusion 31, a limiting groove 21 is formed on the side of the bent protrusion 31 facing away from the protrusion, forming a limiting space between the limiting groove 21 and the corresponding aluminum alloy plate layer 1. For the plate material, the limiting space can be filled with the required filler material, or the limiting space can be kept in a hollow state.

[0038] In this embodiment, the bent protrusion 31 has a generally isosceles trapezoidal shape and includes a protruding flat portion 33 and inclined portions 34 on both sides of the flat portion 33. The flat portion 33 is bonded and fixed to the aluminum alloy plate layer 1 on the corresponding side. During bonding, an adhesive can be applied to the flat portion 33, and then the two can be bonded and fixed by heating and maintaining pressure.

[0039] In this embodiment, since the bending protrusions 31 of the three-dimensional aluminum core layer 3 are strip-shaped and arranged sequentially along the length of the aluminum plate, when the three-dimensional aluminum core layer 3 is under pressure, the bending protrusions 31 of the three-dimensional aluminum core layer 3 will be able to produce a certain degree of elastic deformation. Moreover, the material used in the three-dimensional aluminum core layer 3 is relatively soft and easily deformed under pressure, which affects the normal bonding and fixing between the three-dimensional aluminum core layer 3 and the aluminum alloy plate layer 1.

[0040] Reference Figure 2 As shown, if the three-dimensional aluminum core layer 3 is subjected to pressure in the vertical direction, the dimension of the three-dimensional aluminum core layer 3 in the thickness direction is prone to shrinkage. That is, the tilt angle of the inclined portion 34 of the bent protrusion 31 will change, the tilt angle formed between the inclined portion 34 and the aluminum alloy plate 1 will become smaller, the width of the bent protrusion 31 in the left and right directions will also change, and a certain elastic slip will occur between the flat portion 33 of the bent protrusion 31 and the aluminum alloy plate 1, affecting the overall thickness uniformity, bonding strength, and internal structural stability of the plate 100.

[0041] Because the three-dimensional aluminum core layer 3 and the two aluminum alloy plate layers 1 need to maintain the bonding pressure during the composite bonding process, the three-dimensional aluminum core layer 3 will be squeezed, which will lead to the displacement of the three-dimensional aluminum core layer 3.

[0042] Furthermore, to address the stability of the three-dimensional aluminum core layer 3 during compression, the design was further optimized based on the above embodiments, as detailed below. Figure 3 , Figure 4 Please provide a detailed explanation.

[0043] In this embodiment, a plurality of limiting protrusions 2 are fixedly connected to the side of the aluminum alloy plate layer 1 facing the three-dimensional aluminum core layer 3. Each pair of limiting protrusions 2 forms a group, and the two limiting protrusions 2 limit and support the bent protrusion 31. Limiting protrusions 2 are respectively provided on both sides of each bent protrusion 31, and a limiting groove 21 is formed between two limiting protrusions 2.

[0044] The width of the limiting groove 21 is adapted to the bending protrusion 31, and the bending protrusion 31 can be embedded in the limiting groove 21 between the two limiting protrusions 2 to achieve positioning. When the three-dimensional aluminum core layer 3 and the two aluminum alloy plate layers 1 are compositely formed, the bending protrusion 31 of the three-dimensional aluminum core layer 3 is embedded between the two limiting protrusions 2, so that each bending protrusion 31 can have two supporting limitings.

[0045] Specifically, the limiting protrusions 2 are strip-shaped protrusions arranged along the width of the aluminum alloy plate 1, and each limiting protrusion 2 is arranged sequentially along the direction of the aluminum alloy plate 1. The coating spacing of the limiting protrusions 2 can be specifically set according to the width and distribution of the bent protrusions 31.

[0046] During the heating and curing process, the heating temperature rises above the hot melt temperature of the hot melt adhesive material. After the hot melt adhesive has cured and bonded, the hot melt adhesive material will also melt. After cooling, it can form a supplementary bond between the aluminum alloy plate layer 1 and the three-dimensional aluminum core layer 3.

[0047] This embodiment discloses a manufacturing process for a three-dimensional composite integrated plate, used to produce the three-dimensional composite integrated plate as described above.

[0048] The production process includes the following steps:

[0049] Step 1: Apply hot melt adhesive to the surface of the aluminum alloy plate 1 facing the three-dimensional aluminum core layer 3 to form a limiting protrusion 2. The hot melt adhesive is applied in a strip coating manner to form the limiting protrusion 2 on the surface of the aluminum alloy plate 1. The height of the limiting protrusion 2 is approximately 1.0-2.0mm, which can support the obstruction of the bending protrusion 31.

[0050] Step 2: The three-dimensional aluminum core layer 3 is bent to form uniformly distributed bent protrusions 31 on the surface of the three-dimensional aluminum core layer 3; the bent protrusions 31 are formed according to the above structure, and each bent protrusion 31 is approximately distributed in an isosceles trapezoidal structure, and a protruding flat part 33 is formed in the middle, and inclined parts 34 are formed on both sides; the width of the flat part 33 is adapted to the width of the limiting groove 21 formed by the two limiting protrusions 2.

[0051] Step 3: Apply thermosetting adhesive to the flat portion 33 of the bent protrusion 31 of the three-dimensional aluminum core layer 3.

[0052] Step 4: The two aluminum alloy plate layers 1 and the three-dimensional aluminum core layer 3 are composited together. The three-dimensional aluminum core layer 3 is located between the two aluminum alloy plate layers 1, and the flat part 33 of the bent protrusion 31 is precisely embedded between the two limiting protrusions 2 to form a positioning. After the two aluminum alloy plate layers 1 and the three-dimensional aluminum core layer 3 are bonded together, pressure is applied to both sides of the plate 100 by the pressure roller 6, thereby maintaining the positions in the plate 100 that need to be bonded in a tight bonded state.

[0053] Step 5: Press the two aluminum alloy plate layers 1 and the three-dimensional aluminum core layer 3 together with the pressure roller 6, and send them into the hot drying device 5 for heat curing. Then, use heat curing adhesive to bond and fix the flat part 33 of the bent protrusion 31 to the aluminum alloy plate layer 1.

[0054] In step 5, two aluminum alloy plate layers 1 and three-dimensional aluminum core layer 3 are stacked to form plate 100, and plate 100 is conveyed upward along an inclined path. On the upper side of plate 100, corresponding to the front position of the hot drying device 5, a sprayer 4 is installed. The sprayer 4 can spray cooling water onto the surface of plate 100, forming a spray water curtain 41 on the surface of plate 100. The spray water curtain 41 can flow down along the inclined plate 100 and will not affect the subsequent hot drying and curing of the hot drying device 5.

[0055] During the hot drying process inside the hot drying device 5, the thermosetting adhesive applied between the flat portion 33 of the bent protrusion 31 and the aluminum alloy plate 1 will cure. After the thermosetting adhesive cures, the aluminum alloy plate 1 and the three-dimensional aluminum core layer 3 will be fixed together. In front of the hot drying device 5, the plate 100 can be cooled by the sprayer 4, which can maintain the stability of the limiting protrusion 2 of the hot melt adhesive. The limiting protrusion 2 can effectively support and limit the bent protrusion 31 of the three-dimensional aluminum core layer 3. The unstable state of the three-dimensional aluminum core layer 3 is only a short distance between the sprayer 4 and the complete hot curing in the hot drying device 5, which can greatly shorten the length of the unstable state of the three-dimensional aluminum core layer 3 and maintain the stability of the three-dimensional aluminum core layer 3 under pressure.

[0056] Reference Figure 5 As shown, the unstable length of the three-dimensional aluminum core layer 3 is L. When the unstable length of the three-dimensional aluminum core layer 3 is short, for example, when the unstable segment length L is less than 25cm, the two sides of the three-dimensional aluminum core layer 3 are still restricted, and the deformation in the length direction will be very small. Therefore, the structural stability of the three-dimensional aluminum core layer 3 under pressure can be basically maintained, and the bending protrusion 31 will not produce obvious bending deformation.

[0057] Reference Figure 2 As shown, the bending protrusions 31 of the three-dimensional aluminum core layer 3 are formed with a certain period in the length direction. Figure 2 The shape period of the bending protrusion 31 is a; within a period a, there is an upwardly protruding bending protrusion 31 and a downwardly protruding bending protrusion 31. Generally, the range of a is 2-3 cm; the length of the unstable segment L is 10-20 times a, which is a reasonable state.

[0058] Reference Figure 5As shown, the thermal drying device 5 is divided into a preheating section 501 and a curing section 502 along its length. The plate 100 first passes through the preheating section 501. When it reaches the end of the preheating section 501, the thermosetting adhesive inside the plate 100 will be cured. Then, it will remain stable in the curing section 502, maintaining a stable and bonded state. In this embodiment, the length of the preheating section 501 is the unstable length L of the three-dimensional aluminum core layer 3.

[0059] After the hot melt adhesive material is placed in the limiting protrusion 2 and the hot drying device 5, it will become weak until it melts, and after cooling, it will bond and fix the aluminum alloy plate layer 1 and the bending protrusion 31.

[0060] Furthermore, referring to Figure 6 As shown, a hot drying channel 51 is formed within the hot drying device 5. Hot air blowers 52 and return air inlets 53 are respectively arranged on both sides of the board 100 within the hot drying channel 51. Hot air is generated within the hot drying channel 51 along the width of the board 100, and the hot air flows through the inner side of the board 100 for heating. The hot air blowers 52 and return air inlets 53 are connected by a circulating air duct 51, enabling the circulation of hot air in the lateral width direction. This effectively heats the hollow areas inside the board 100, ensuring rapid temperature rise and more efficient curing of the thermosetting adhesive.

[0061] Furthermore, the limiting protrusion 2 is made of hot melt adhesive material, specifically a high-temperature adhesive with a melting temperature of approximately 180-200°C and a softening point of approximately 150°C. The flat portion 33 of the bent protrusion 31 is bonded to the aluminum alloy plate layer 1 using a thermosetting adhesive. The bonding and curing temperature of the thermosetting adhesive is approximately below 130°C; for example, cyanoacrylate can be used, which can cure upon heating, thus connecting and curing the layers into a single unit.

[0062] In addition, in order to improve the surface bonding performance of aluminum alloy plate layer 1 and three-dimensional aluminum core layer 3, surface treatment and primer can be applied to the surface of the semi-finished raw materials to ensure effective bonding in the future and to ensure the surface performance of the material.

[0063] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A three-dimensional composite integrated plate, characterized in that, The plate includes a plate (100), which includes a three-dimensional aluminum core layer (3) and two aluminum alloy plate layers (1). The three-dimensional aluminum core layer (3) is located between the two aluminum alloy plate layers (1). The three-dimensional aluminum core layer (3) has alternating bent protrusions (31) on both sides. Along the length of the three-dimensional aluminum core layer (3), the protrusion directions of the bent protrusions (31) are alternately opposite. The bent protrusions (31) and the corresponding aluminum alloy plate layers (1) press against each other and are bonded and fixed.

2. The three-dimensional composite integrated plate according to claim 1, characterized in that, The bent protrusion (31) has a limiting groove (21) on the side opposite to the protrusion, and a limiting space is formed between the limiting groove (21) and the aluminum alloy plate layer (1) on the corresponding side.

3. The three-dimensional composite integrated plate according to claim 1, characterized in that, Each bent protrusion (31) is a strip structure arranged along the width of the three-dimensional aluminum core layer (3); each bent protrusion (31) is evenly arranged along the length of the three-dimensional aluminum core layer (3).

4. The three-dimensional composite integrated plate according to claim 1, characterized in that, The bent protrusion (31) includes a protruding flat part (33) and inclined parts (34) on both sides of the flat part (33). The flat part (33) is bonded and fixed to the aluminum alloy plate layer (1) on the corresponding side.

5. A three-dimensional composite integrated plate according to claim 4, characterized in that, The aluminum alloy plate layer (1) is fixedly connected to a number of limiting protrusions (2) on the side facing the three-dimensional aluminum core layer (3). Each bending protrusion (31) has a limiting protrusion (2) on both sides. A limiting groove (21) is formed between two limiting protrusions (2). The width of the limiting groove (21) is adapted to the bending protrusion (31). The bending protrusion (31) can be embedded in the limiting groove (21) between two limiting protrusions (2) to achieve positioning.

6. A three-dimensional composite integrated plate according to claim 5, characterized in that, The limiting protrusion (2) is a strip-shaped protrusion structure arranged along the width direction of the aluminum alloy plate (1), and each limiting protrusion (2) is arranged sequentially along the direction of the aluminum alloy plate (1).

7. A three-dimensional composite integrated plate according to claim 5, characterized in that, The limiting protrusion (2) is made of hot melt adhesive material; the flat part (33) of the bending protrusion (31) is bonded to the aluminum alloy plate (1) by thermosetting adhesive.

8. A manufacturing process for a three-dimensional composite integrated plate, characterized in that, For use in the production of the three-dimensional composite integrated plate as described in any one of claims 1-7; the production process includes the following steps: Step 1: Apply hot melt adhesive to the surface of the aluminum alloy plate 1 facing the three-dimensional aluminum core layer (3) to form a limiting protrusion (2); Step 2: The three-dimensional aluminum core layer (3) is bent to form uniformly distributed bent protrusions (31) on the surface of the three-dimensional aluminum core layer (3); Step 3: Apply thermosetting adhesive to the flat part (33) of the surface of the bent protrusion (31) of the three-dimensional aluminum core layer (3); Step 4: Combine the two aluminum alloy plate layers (1) with the three-dimensional aluminum core layer (3). The three-dimensional aluminum core layer (3) is located between the two aluminum alloy plate layers (1), and the flat part (33) of the bent protrusion (31) is precisely embedded between the two limiting protrusions (2) to form a positioning. Step 5: Press the two aluminum alloy plate layers (1) and the three-dimensional aluminum core layer (3) together with the pressure roller (6), and send them into the hot drying device (5) for heat curing. Then, use heat curing adhesive to bond and fix the flat part (33) of the bent protrusion (31) to the aluminum alloy plate layer (1).

9. The manufacturing process of a three-dimensional composite integrated plate according to claim 8, characterized in that, In step 5, two aluminum alloy plates (1) and a three-dimensional aluminum core layer (3) are stacked to form a plate (100), and the plate (100) is conveyed upward along an inclined path. On the upper side of the plate (100), corresponding to the front position of the hot drying device (5), a sprayer (4) is installed. The sprayer (4) can spray cooling water onto the surface of the plate (100) to form a spray water curtain (41) on the surface of the plate (100). A hot drying channel (51) is formed inside the hot drying device (5). A hot air blower (52) and a return air inlet (53) are respectively provided on both sides of the plate (100) in the hot drying channel (51). Hot air is formed in the hot drying channel (51) along the width direction of the plate (100), and the hot air flows through the inner side of the plate (100) to heat it.

10. The manufacturing process of a three-dimensional composite integrated plate according to claim 8, characterized in that, The limiting protrusion (2) formed by hot melt adhesive coating is heated and melted in the hot drying device (5), and after cooling, it bonds and fixes the aluminum alloy plate (1) and the bending protrusion (31).

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