Composite metal plate

Abstract

The utility model provides a composite metal plate which comprises a surface layer, a core layer and a bottom lining layer which are sequentially arranged from top to bottom, a first bonding layer is arranged between the surface layer and the core layer, the bottom surface of the surface layer is bonded and connected with at least part of the surface of the core layer through the first bonding layer, a second bonding layer is arranged between the core layer and the bottom lining layer, and the second bonding layer is bonded and connected with the surface of the core layer through the second bonding layer. The bottom surface of the core layer is bonded and connected with the surface of the bottom lining layer through a second bonding layer, the surface layer is a metal plate, the bottom lining layer is a fiber reinforced calcium silicate plate or a fiber reinforced cement plate, and the core layer is provided with a plurality of upper convex parts and lower concave parts which continuously extend and are uniformly arranged at intervals. The composite metal plate disclosed by the utility model has the advantages of lower production cost, higher rigidity, smaller deformation and better flatness.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of building thermal insulation materials, specifically relates to a composite metal plate, belong to building material technical field. BACKGROUND

[0002] With the increasing demand of building decoration and industrial application on decorative materials, composite aluminum plate is widely used in building exterior wall, indoor decoration, transportation tool and other fields due to its light weight, aesthetic appearance and other characteristics. The common composite aluminum plate structure in prior art usually adopts a three-layer structure of "coated aluminum plate-aluminum cone core-aluminum plate", i.e. the surface layer and the bottom layer are both aluminum plates, and the middle is an aluminum cone core structure. The three layers are connected to form a whole by an adhesive.

[0003] However, this traditional composite aluminum plate structure has the following technical problems: first, the all-aluminum structure has a high cost, especially in a market environment where aluminum prices fluctuate greatly, the product cost control faces great pressure; second, the aluminum material has a large thermal expansion coefficient, which is prone to deformation and warping in a temperature changing environment, affecting the flatness and service life of the product; third, although the pure aluminum structure is light in weight, the overall rigidity is limited, and in large-area application, support structures need to be added or the thickness of the plate needs to be increased, leading to complex installation or further rising of the cost; fourth, the surface processing precision and flatness of the aluminum plate are difficult to guarantee, affecting the final installation effect. SUMMARY

[0004] Based on the above background, the purpose of the present utility model is to provide a composite metal plate with lower production cost and higher rigidity, and less deformation and better flatness.

[0005] To achieve the above utility model purposes, the present utility model provides the following technical solutions:

[0006] A composite metal plate includes a surface layer, a core layer and a bottom lining layer arranged in order from top to bottom, a first adhesive layer is provided between the surface layer and the core layer, the bottom surface of the surface layer and at least part of the surface of the core layer are connected by the first adhesive layer, a second adhesive layer is provided between the core layer and the bottom lining layer, the bottom surface of the core layer and the surface of the bottom lining layer are connected by the second adhesive layer, the surface layer is a metal plate, the bottom lining layer is a fiber reinforced calcium silicate board or a fiber reinforced cement board, and the core layer has a plurality of upper protrusions and lower depressions that extend continuously and are arranged uniformly and at intervals.

[0007] The bottom lining material in the composite metal plate has modulus of elasticity and strength characteristics different from the aluminum material of the face plate, forming a complementary performance structure, the fiber reinforced material of the bottom lining provides better impact resistance and fracture strength, the heterogeneous material combination of the composite metal plate improves the bending strength and torsional stiffness of the overall plate, the composite metal plate is not prone to deformation, has good flatness, and the core layer structure enables the face layer load to be more uniformly transmitted to the bottom lining, reduces the fracture risk, and optimizes the stress distribution.

[0008] Preferably, the face layer is an aluminum plate, a stainless steel plate or an alloy steel plate with a coating on the surface.

[0009] Preferably, the core layer is a tapered core plate or a corrugated core plate, and the material of the core layer is aluminum alloy or stainless steel.

[0010] Preferably, the surface and the bottom surface of the face layer are both planes, and the surface and the bottom surface of the bottom lining are both planes.

[0011] Preferably, a connecting piece is further arranged between the core layer and the bottom lining, the core layer and the bottom lining are fixedly connected through the connecting piece, and the top end of the connecting piece is located in the lower recess of the core layer.

[0012] Preferably, the bottom lining is further provided with an outer keel, and the connecting piece is fixedly connected in sequence through the core layer, the second adhesive layer and the outer keel.

[0013] Preferably, the bottom end of the connecting piece is located inside the outer keel.

[0014] Preferably, the connecting piece is a screw, a rivet or a through bolt.

[0015] Preferably, the material of the first adhesive layer and the second adhesive layer is selected from one of a high polymer glue, polyurethane and epoxy resin.

[0016] Compared with the prior art, the composite metal plate has the following advantages:

[0017] The composite metal plate of the utility model adopts a fiber reinforced calcium silicate plate or a fiber reinforced cement plate to replace the bottom aluminum plate in the traditional structure, the material cost is significantly reduced, and the folding treatment is not needed, the loss is reduced, and the production efficiency is improved.

[0018] The bottom lining of the utility model adopts an inorganic plate with a fiber reinforced structure, and the bending strength and the stiffness of the inorganic plate are better than those of an aluminum plate with the same thickness, the bending stiffness of the composite metal plate is greatly improved in combination with the upper convex part and the lower recess structure which are continuously extended and uniformly and interval arranged, and the heterogeneous material combination of the bottom lining and the face layer and the core layer.

[0019] The surface of the surface layer and the bottom lining layer and the bottom surface are all designed as planes, the upper convex part and the lower concave part of the uniform interval of the core layer are combined, overall balanced supporting force is provided, the surface layer is ensured to be uniformly stressed, and uneven surface caused by local deformation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the provided drawings without creative labor.

[0021] Figure 1 is a structural schematic view of a composite metal plate of the first embodiment of the present application;

[0022] Figure 2 is a structural schematic view of a composite metal plate of the second embodiment of the present application;

[0023] Figure 3 is a structural schematic view of a composite metal plate of the third embodiment of the present application;

[0024] In the drawing: 1, surface layer; 2, core layer; 3, bottom lining layer; 4, first bonding layer; 5, second bonding layer; 6, connecting piece; 7, outer keel; 201, upper convex part; 202, lower concave part. DETAILED DESCRIPTION

[0025] The technical scheme of the present application will be further specifically described below by means of specific embodiments and in combination with the drawings. It should be understood that the implementation of the present application is not limited to the following embodiments, and any form of variation and / or change of the present application will fall within the scope of protection of the present application.

[0026] In the present application, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are all conventional methods in the art, unless otherwise specified. The components or equipment in the following embodiments are all general standard components or components known to those skilled in the art, and their structure and principle can be known to the skilled person through technical manuals or obtained through conventional experimental methods.

[0027] The embodiments of the present application will be described in detail below in combination with the drawings, and in the following detailed description, many specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present application. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.

[0028] Example 1

[0029] like Figure 1 The composite metal plate shown includes a surface layer 1, a core layer 2, and a bottom liner layer 3 arranged sequentially from top to bottom. A first adhesive layer 4 is provided between the surface layer 1 and the core layer 2, and the bottom surface of the surface layer 1 is bonded to at least a portion of the surface of the core layer 2 through the first adhesive layer 4. A second adhesive layer 5 is provided between the core layer 2 and the bottom liner layer 3, and the bottom surface of the core layer 2 is bonded to the surface of the bottom liner layer 3 through the second adhesive layer 5. The surface layer 1 is a metal plate, and the bottom liner layer 3 is a fiber-reinforced calcium silicate board or a fiber-reinforced cement board. The core layer 2 has a plurality of continuously extending and uniformly spaced upper protrusions 201 and lower recesses 202. Specifically, the surface layer 1 is an aluminum plate, stainless steel plate, or alloy steel plate with a coating on the surface; in this embodiment, an aluminum plate is selected. The core layer 2 is a conical core plate or a corrugated core plate, and the material can be aluminum alloy or stainless steel; in this embodiment, an aluminum conical core plate is selected. The surface and bottom surfaces of the surface layer 1 and the bottom surface of the bottom liner layer 3 are both planar. The materials of the first adhesive layer 4 and the second adhesive layer 5 are selected from one of the following: polymer adhesive, polyurethane, and epoxy resin.

[0030] Example 2

[0031] A composite metal plate, with the same technical solution as Embodiment 1, differs in that:

[0032] like Figure 2 As shown, a connector 6 is provided between the core layer 2 and the bottom liner 3. The core layer 2 and the bottom liner 3 are fixedly connected by the connector 6, and the top of the connector 6 is located in the lower recess 202 of the core layer 2.

[0033] The connector 6 provides a mechanical connection between the core layer 2 and the underlayer 3, thereby further enhancing the connection strength between the core layer 2 and the underlayer 3.

[0034] Specifically, the connector 6 is a screw, rivet, or through bolt. In this embodiment, a screw is selected, and the bottom of the screw does not penetrate the bottom surface of the liner 3.

[0035] Example 3

[0036] A composite metal plate, with the same technical solution as Embodiment 1, differs in that:

[0037] like Figure 3 As shown, a connector 6 is provided between the core layer 2 and the bottom liner 3. The core layer 2 and the bottom liner 3 are fixedly connected by the connector 6, and the top of the connector 6 is located in the lower recess 202 of the core layer 2. The bottom of the bottom liner 3 is also provided with an outer keel 7. The connector 6 passes through the core layer 2 and the second adhesive layer 5 in sequence and is fixedly connected to the outer keel 7.

[0038] The outer keel 7 further enhances the rigidity of the whole composite metal plate, and the connecting piece 6 provides mechanical connection for the core layer 2, the bottom lining layer 3 and the outer keel 7, thereby further enhancing the connection firmness between the core layer 2, the bottom lining layer 3 and the outer keel 7.

[0039] Specifically, the connecting piece 6 is a screw, a rivet or a through bolt, and in this embodiment, the connecting piece 6 is a screw, and the cross section of the outer keel 7 is a square box type, and the bottom end of the connecting piece 6 is located inside the outer keel 7.

[0040] The principles and implementation modes of the present application are described by using specific examples in this paper, and the above examples are only used to help understand the method and the core idea of the present application. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A clad metal plate characterized by: The composite metal plate comprises a surface layer (1), a core layer (2) and a bottom lining layer (3) arranged in sequence from top to bottom, a first bonding layer (4) is arranged between the surface layer (1) and the core layer (2), the bottom surface of the surface layer (1) and at least part of the surface of the core layer (2) are bonded and connected through the first bonding layer (4), a second bonding layer (5) is arranged between the core layer (2) and the bottom lining layer (3), the bottom surface of the core layer (2) and the surface of the bottom lining layer (3) are bonded and connected through the second bonding layer (5), the surface layer (1) is a metal plate, the bottom lining layer (3) is a fiber reinforced calcium silicate plate or a fiber reinforced cement plate, and the core layer (2) has a plurality of upper protruding parts (201) and lower recessed parts (202) which are continuously extended and uniformly spaced.

2. The composite sheet metal panel of claim 1, wherein: The surface layer (1) is an aluminum plate, a stainless steel plate or an alloy steel plate with a coating on the surface.

3. The composite sheet of claim 1 wherein: The core layer (2) is a tapered core plate or a corrugated core plate, and the material of the core layer (2) is aluminum alloy or stainless steel.

4. The composite sheet of claim 1 wherein: The surface and the bottom surface of the surface layer (1) are both planes, and the surface and the bottom surface of the bottom lining layer (3) are both planes.

5. The composite sheet of claim 1 wherein: The core layer (2) and the bottom lining layer (3) are further provided with a connecting piece (6), the core layer (2) and the bottom lining layer (3) are fixedly connected through the connecting piece (6), and the top end of the connecting piece (6) is located in the lower recessed part (202) of the core layer (2).

6. A composite sheet metal panel according to claim 5, wherein: The bottom lining layer (3) is further provided with an outer keel (7), and the connecting piece (6) penetrates the core layer (2), the second bonding layer (5) and the outer keel (7) in sequence and is fixedly connected.

7. A composite sheet metal panel according to claim 6, wherein: The bottom end of the connecting piece (6) is located inside the outer keel (7).

8. The composite sheet of claim 5 wherein: The connecting piece (6) is a screw, a rivet or a through bolt.

9. The composite sheet of claim 1 wherein: The materials of the first bonding layer (4) and the second bonding layer (5) are selected from one of high molecular glue, polyurethane and epoxy resin.

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