Hot melt type composite heat insulation plate

Abstract

The utility model discloses a hot-melt type composite heat insulation plate, which relates to the technical field of heat insulation plates and comprises a steel plate, and the surface of the steel plate is aluminized. The aluminum foil layer is mounted on the outer side of the steel plate; heat insulation cotton is filled between the steel plate and the aluminum foil layer; an adhesive is coated on the joint surface of the aluminum foil layer and the steel plate; the steel plate, the aluminum foil layer and the heat insulation cotton which are integrally assembled are heated and stretched to form an adhesive which is melted, so that the aluminum foil layer and the steel plate are bonded and fixed; the composite heat insulation board is optimized in structure, outer layer cut materials are developed and saved, the number of used molds is reduced, needed production line equipment is reduced, manpower is saved, and the heat insulation performance is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat insulation boards, and in particular to a hot-melt composite heat insulation board. Background Technology

[0002] Scheme 1 of existing application: The heat insulation board with composite sandwich structure is formed by processing the inner metal steel plate (1), the middle heat insulation cotton (2) and the outer heat insulation steel plate (3). The processing technology is that the inner, middle and outer layers are cut separately, the three layers are assembled, the outer layer is 90° vertical edge, the outer layer is folded at 45°, the outer layer is combined, and the outer layer is stretched and formed. The early process of this processing method is complicated. After the inner, middle and outer layers are cut and assembled, the outer layer is 90° vertical edge, the outer layer is folded at 45°, and the outer layer is combined, the product is still in a flat state. It requires more processes and machine tools, has higher requirements for the production line, and needs to invest in the development of more molds. In addition, the heat insulation capacity is low. The inner and outer layers are two layers of metal steel plates, the heat reflection capacity is low, the surface cannot be knurled, and the heat scattering capacity is low. Heat insulation can only be achieved through heat insulation cotton;

[0003] Scheme 2 of existing application: The heat insulation board of stamping composite sandwich structure is formed by processing the outer metal steel plate (4), the middle insulation cotton (2), and the inner insulation steel plate (5). The processing technology is the middle layer cutting, the inner or outer layer cutting, three-layer assembly, 90° vertical edge of the outer layer, 45° folding of the outer layer, outer layer edge bonding, stretching and forming. This processing method can save a set of inner layer cutting molds and production processes, but there are still problems such as misalignment or misalignment of the inner and outer layers, resulting in uneven edges and low heat insulation capacity.

[0004] Therefore, in view of the problems existing in the existing heat insulation board, a device is designed to optimize the structure, reduce the number of molds, reduce the use of production line equipment, save manpower, and further improve the heat insulation performance to solve the above problems. Contents of utility model

[0005] The purpose of this utility model is to provide a hot-melt composite insulation board with optimized structure, reduced number of molds, reduced usage of production line equipment, saved manpower, and further improved thermal insulation performance.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hot-melt composite insulation board, including:

[0008] Steel plate, the surface of the steel plate is aluminum-plated;

[0009] Aluminum foil layer, the aluminum foil layer is installed on the outside of the steel plate;

[0010] The heat insulation cotton is filled between the steel plate and the aluminum foil layer;

[0011] The joint surface of the aluminum foil layer and the steel plate is coated with an adhesive;

[0012] Heat and stretch the assembled steel plate, aluminum foil layer and heat insulation cotton to melt the adhesive so as to realize the bonding and fixing of the aluminum foil layer and the steel plate.

[0013] Furthermore, a convex part is formed in the middle part of the aluminum foil layer;

[0014] A receiving cavity for installing the heat insulation cotton is formed between the convex part and the steel plate;

[0015] The peripheral part of the aluminum foil layer is attached and installed on the steel plate.

[0016] Furthermore, the thickness of the aluminum foil layer is 0.8 mm.

[0017] Furthermore, the surface of the aluminum foil layer is knurled.

[0018] Furthermore, the surface of the aluminum foil layer is perforated.

[0019] In the above technical solution, a hot-melt composite heat insulation board of the present utility model has the following beneficial effects:

[0020] The structure of a hot-melt composite heat insulation board proposed by the present utility model is optimized. The composite heat insulation board develops and saves the outer layer cutting material, reduces the number of molds used, reduces the required production line equipment, saves manpower, and significantly improves the heat insulation performance. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of Solution 1 in the background art;

[0023] Figure 2 It is a schematic structural diagram of Solution 2 in the background art;

[0024] Figure 3 It is a schematic structural diagram of a hot-melt composite heat insulation board provided by an embodiment of the present utility model.

[0025] Description of the Reference Numerals:

[0026] 11. Steel plate; 12. Aluminum foil layer; 13. Heat insulation cotton;

[0027] 121. Convex part. Detailed Embodiments

[0028] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0029] It should be noted that the orientation or positional relationship indicated by the terms "outer side", "periphery", "middle", etc. used herein is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description. Similar expressions are only for the purpose of illustration and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] See Figures 1-3 as shown in

[0031] A hot-melt composite heat insulation board, comprising:

[0032] A steel plate 11, with the surface of the steel plate 11 aluminized;

[0033] An aluminum foil layer 12, with the aluminum foil layer 12 installed on the outer side of the steel plate 11;

[0034] Heat insulation cotton 13 is filled between the steel plate 11 and the aluminum foil layer 12;

[0035] An adhesive is coated on the joint surface between the aluminum foil layer 12 and the steel plate 11;

[0036] The assembled steel plate 11, aluminum foil layer 12 and heat insulation cotton 13 are heated and stretched to melt the adhesive to realize the bonding and fixing of the aluminum foil layer 12 and the steel plate 11.

[0037] A convex portion 121 is formed in the middle part of the aluminum foil layer 12;

[0038] A receiving cavity for installing the heat insulation cotton 13 is formed between the convex portion 121 and the steel plate 11;

[0039] The peripheral part of the aluminum foil layer 12 is fitted and installed on the steel plate 11.

[0040] Specifically, a hot-melt composite heat insulation board has a three-layer structure of a steel plate 11, heat insulation cotton 13 and an aluminum foil layer 12 from the inside to the outside. During the processing, the processes of outer layer cutting, outer layer 90° vertical edge, outer layer 45° folding edge, and outer layer edge joining are omitted. Inner / outer layer cutting (using a common mold), that is, either the steel plate 11 or the aluminum foil layer 12 is selected for cutting and the same mold is shared, the heat insulation cotton is cut, the three layers are assembled, then hot-melt stretching is carried out, and finally shaping is performed; a heating device is added to the stretching or forming mold, and the whole is heated and stretched. While stretching, the adhesive on the back of the aluminum foil layer 12 is melted, so that the aluminum foil layer 12 is bonded to the steel plate 11, thus forming a firm sandwich structure.

[0041] Furthermore, the steel plate 11 (SA1D) located in the inner layer complies with the standard of JIS G 3314-2019, and the surface of the steel plate 11 is aluminized for corrosion prevention;

[0042] The aluminum foil layer 12 (1050A-O) located in the outer layer has a thickness of 0.8 mm, and the execution standards for chemical composition and mechanical properties are GB / T 3880;

[0043] The heat insulation cotton 13 located in the middle layer is high-silica heat insulation cotton.

[0044] The thickness of the aluminum foil layer 12 is 0.8 mm.

[0045] The surface of the aluminum foil layer 12 is knurled.

[0046] Specifically, the surface of the aluminum foil layer 12 is knurled to enhance the strength of the aluminum foil, reduce the risk of cracking, increase the heat scattering surface, and improve the heat reflection efficiency;

[0047] The surface of the aluminum foil layer 12 is perforated.

[0048] Specifically, the surface of the aluminum foil layer 12 is perforated, which serves as a vent hole and has the function of stamping and venting; it releases gas during stretching and stamping to prevent stamping bulging and cracking.

[0049] Furthermore, during the processing, there may be problems such as uneven heat on the surface of the mold, uneven melting of the aluminum foil adhesive, incomplete melting of some adhesives during stretching or forming stamping, insufficient bonding strength, and partial bonding opening. To address this, additional hot runner channels are dug on the surface of the male mold of the mold, heating rods are added, and the heating resistance is increased to increase heat, thereby solving the possible problem of bonding opening.

[0050] In the above technical solution, a hot-melt composite heat insulation board of the present utility model has the following beneficial effects:

[0051] 1. The non-standard special aluminum foil material has extremely high heat reflectivity. Compared with the steel plate, the heat reflection coefficient of the steel plate is 70%, and the heat reflection coefficient of the aluminum foil is 90%, which can better reflect heat;

[0052] 2. The surface of the aluminum foil is knurled to enhance the strength of the aluminum foil, reduce the risk of cracking, increase the heat scattering surface, and improve the heat reflection efficiency;

[0053] 3. The surface of the aluminum foil is perforated, which serves as a vent hole; it releases gas during stretching and stamping to prevent stamping bulging and cracking.

[0054] Only some exemplary embodiments of the present utility model have been described by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A hot-melt composite insulation board, characterized in that: include: A steel plate (11), the surface of the steel plate (11) being aluminum-plated; an aluminum foil layer (12), wherein the aluminum foil layer (12) is installed on the outside of the steel plate (11); A heat insulation cotton (13) is filled between the steel plate (11) and the aluminum foil layer (12); The joint surface between the aluminum foil layer (12) and the steel plate (11) is coated with an adhesive; The steel plate (11), the aluminum foil layer (12) and the heat insulation cotton (13) assembled as one are heated and stretched to form an adhesive that melts to achieve bonding and fixing of the aluminum foil layer (12) and the steel plate (11).

2. The hot-melt composite insulation board according to claim 1, characterized in that: A convex portion (121) is formed in the middle of the aluminum foil layer (12); A receiving cavity for installing heat insulation cotton (13) is formed between the protruding portion (121) and the steel plate (11); The aluminum foil layer (12) is mounted on the steel plate (11) in a fitted manner around its periphery.

3. The hot-melt composite insulation board according to claim 2 is characterized in that: The thickness of the aluminum foil layer (12) is 0.8 mm.

4. The hot-melt composite insulation board according to claim 3 is characterized in that: The surface of the aluminum foil layer (12) is knurled.

5. The hot-melt composite insulation board according to claim 4, characterized in that: The surface of the aluminum foil layer (12) is treated with pinholes.

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