A double-layered paperboard box foldable

Abstract

The utility model relates to packing carton assembly technical field, specifically disclose a kind of double-layer paperboard box of foldable forming, including box bottom plate, the box bottom plate four side edge fixed mounting is cross distribution two box face panels and two box side plates, the box face panel is provided with the folding plate of up and down distribution, the box side plate is provided with the bending plate that is perpendicular to folding plate and with folding plate keeps abutting. The double-layer paperboard box of foldable forming provided by the utility model, by the folding plate of up and down distribution two box face panels form box face panel surface horizontal skeleton, two sides distribution bending plate forms box side plate surface vertical skeleton, and make two kinds of skeleton mutually perpendicular butt joint, so that the box body after assembly forming can utilize the bending of its own excess paper, so that box body itself has the function of compression-resistant skeleton, effectively save paper material resource consumption, satisfy the use demand of box body high-strength compression resistance.

Description

Technical Field

[0001] This utility model relates to packaging paper box assembly technology, specifically a foldable double-layer cardboard box. Background Technology

[0002] Goods need external protection during transportation and storage, which led to the development of paper packaging boxes. These boxes, responsible for carrying and protecting goods, are typically made by folding and assembling thickened cardboard, and protective materials are added during the production process to enhance the structural strength of the box.

[0003] For example, publication number CN217075118U, publication date: 2022-07-29, discloses a convenient folding corrugated cardboard box, which includes a lower cardboard box and an upper cardboard box, which are glued together by a central core board. Both the lower and upper cardboard boxes include a lower cardboard layer, an upper cardboard layer, and side cardboard layers connecting the left and right sides of the lower and upper cardboard layers. The side cardboard layers have a horizontal folding ridge in the center, and the folding ridge has multiple perforations. The upper cardboard box is covered with a PVC film, the rear end of which is bonded to the upper cardboard box with adhesive, and the front end is adhered with double-sided adhesive foam, with a release film adhered to the underside of the double-sided adhesive foam. This utility model connects the foldable lower and upper cardboard boxes through the central core board, forming a double-layer storage space for quick use. The perforations in the middle reduce weight and facilitate fixing, while the PVC film allows for sealing at the rear end, making it highly applicable.

[0004] The shortcoming of existing technology is that the materials used for packaging boxes on the market are limited by paper material science. Therefore, in order to improve the strength of the double-layer structure of the box, a hollow frame structure formed by folding paper needs to be added inside the box to improve the side support and pressure resistance of the box. However, the box and the frame structure require two different processes and different paper cutting and folding. The side pressure resistance cannot be achieved by folding the paper of the box itself, resulting in increased material and equipment costs. Utility Model Content

[0005] The purpose of this invention is to provide a foldable double-layer cardboard box to address the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A foldable double-layer cardboard box includes a bottom plate, on which two front panels and two side panels are fixedly installed in a cross-shaped manner along the four sides.

[0008] The box panel is provided with vertically distributed folding panels;

[0009] The side panel of the box is provided with a bent plate that is perpendicular to the folding plate and abuts against the folding plate.

[0010] As a further description of the above technical solution: a box cover plate is fixedly installed on the box panel, which is distributed opposite to the box bottom plate.

[0011] As a further description of the above technical solution: a cover edge is fixedly installed at the end of the cover plate.

[0012] As a further description of the above technical solution: the end of the bending plate is provided with a bending plate.

[0013] As a further description of the above technical solution: the cross-section of the bent plate is triangular.

[0014] As a further description of the above technical solution: a flat plate is fixedly installed at the end of the bent plate.

[0015] As a further description of the above technical solution: the flat plate and the bent plate are on the same plane.

[0016] As a further description of the above technical solution: the flat plate is bonded and connected to the box panel.

[0017] As a further description of the above technical solution: the side panel of the box has a perforation located on the outside of the folding plate.

[0018] As a further description of the above technical solution: the bent plate is provided with an interface that communicates with the through hole.

[0019] In the above technical solution, the foldable double-layer cardboard box provided by this utility model has the following beneficial effects: the horizontal skeleton of the box panel surface is formed by two folding plates distributed at the top and bottom, and the vertical skeleton of the box side panel surface is formed by the bending plates distributed on both sides. The two skeletons are perpendicularly connected to each other, so that the assembled box body can use the bending of its own excess paper to make the box body itself have the function of a pressure-resistant skeleton, effectively saving paper material resources and meeting the high-strength pressure-resistant use requirements of the box body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the double-layer cardboard box with the lid open, provided in an embodiment of the present invention.

[0022] Figure 2A schematic diagram of the assembly of the double-layer cardboard box bottom plate, box front plate and box side plate provided in an embodiment of this utility model;

[0023] Figure 3 A top view of the assembled double-layer cardboard box bottom plate, box front plate and box side plate provided in an embodiment of this utility model;

[0024] Figure 4 An exploded view of the box panel and box side panel provided in an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Box bottom plate; 2. Box front plate; 21. Folding plate; 3. Box side plate; 31. Bending plate; 32. Bending plate; 33. Flat plate; 34. Perforation; 35. Joint; 4. Box cover plate; 41. Cover edge. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Please see Figure 1-4 This utility model provides a technical solution, including the following embodiments:

[0029] Example 1

[0030] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, based on the original cardboard assembly into a box, the side cardboard of the box is bent into a special shape, causing the bent parts to form a skeleton supporting the side walls of the box. Two vertically distributed folding plates 21 form a horizontal skeleton on the surface of the box panel 2, and two side-distributed bending plates 31 form a vertical skeleton on the surface of the box side panel 3. The two skeletons are perpendicularly joined together, allowing the assembled box to utilize the bending of its excess paper, thus enabling the box itself to function as a pressure-resistant skeleton. This effectively saves paper material resources and meets the high-strength, pressure-resistant requirements of the box.

[0031] Specifically, the two box panels 2 and the two box side panels 3 are distributed around the box bottom panel 1, and are all made by bending and folding double-layer thickened paper, eliminating the need for two production lines and two different types of paper cutting and processing.

[0032] Furthermore, the paper used for the box components is double-layered cardboard, and each layer of cardboard is corrugated and hollow, which ensures the structural strength of the paper.

[0033] Furthermore, the box cover 4 is obtained by bending the end of one of the box panels 2, and its purpose is to seal the box body to meet the normal opening and closing requirements of the box body.

[0034] Furthermore, the cover edge 41, which is integrally formed on the end of the box cover plate 4, serves as the connecting edge after the box cover plate 4 is sealed, and can be connected and fixed by glue or similar staples.

[0035] Furthermore, when the bent plate 31 is connected to the box panel 2, it can also be glued or fixed with staples to ensure the stability of the box after the side panels are assembled.

[0036] Example 2

[0037] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment details the skeleton assembly. A bent plate 32 is obtained by extending and bending the end of the bent plate 31, creating a hollow structure inside the box. This provides cushioning against impacts when items are placed inside the box, while also reinforcing the skeleton structure.

[0038] Specifically, the flat plate 33, integrally formed at the end of the curved plate 32, is also connected and fixed by glue or similar staples, just like the bent plate 31. The purpose is to ensure that the vertical skeletons on both sides of the box side plate 3 can maintain a stable connection with the box panel 2, thus meeting the requirements for assembly and use of the box side.

[0039] Example 3

[0040] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment details the frame assembly and fixing components. By using the hollow curved plate 32 and the solid folding plate 21 for interlocking and combination, the overall structural strength of the frame is improved, and the surface of the box near the docking position is more resistant to pressure, corresponding to the corners of the box, so that the items placed inside the box can be effectively protected.

[0041] Specifically, after the perforation 34 and the interface 35 are connected, the bent plate 32 can be snapped onto the outside of the folding plate 21, thereby meeting the requirements of the frame assembly.

[0042] Furthermore, by utilizing the interface 35 to be formed from the bending plate 31, bending plate 32 and flat plate 33, the vertical frame on the side of the box side plate 3 has stable vertical pressure resistance. Therefore, the horizontally distributed folding plate 21 is difficult to damage the vertical frame after being snapped together, which causes the two frames to restrict each other after assembly, thereby meeting the normal pressure resistance requirements.

[0043] Furthermore, the combination of the bent plate 31, the bent plate 32, and the flat plate 33 together constitutes the vertical skeleton of the box side plate 3.

[0044] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A foldable double-layer cardboard box, characterized in that, Includes a box bottom plate (1), on which two box front plates (2) and two box side plates (3) are fixedly installed on the four sides; The box panel (2) is provided with vertically distributed folding plates (21); The side panel (3) of the box is provided with a bent plate (31) that is perpendicular to the folding plate (21) and abuts against the folding plate (21).

2. The foldable double-layer cardboard box according to claim 1, characterized in that, A box cover plate (4) is fixedly installed on the box panel (2) and is distributed opposite to the box bottom plate (1).

3. A foldable double-layer cardboard box according to claim 2, characterized in that, The end of the box cover plate (4) is fixedly installed with a cover edge (41).

4. A foldable double-layer cardboard box according to claim 3, characterized in that, The bent plate (31) is provided with a bent plate (32) at its end.

5. A foldable double-layer cardboard box according to claim 4, characterized in that, The cross-section of the bent plate (32) is triangular.

6. A foldable double-layer cardboard box according to claim 4, characterized in that, A flat plate (33) is fixedly installed at the end of the bent plate (32).

7. A foldable double-layer cardboard box according to claim 6, characterized in that, The flat plate (33) and the bent plate (31) are on the same plane.

8. A foldable double-layer cardboard box according to claim 6, characterized in that, The flat plate (33) is attached to the box panel (2).

9. A foldable double-layer cardboard box according to claim 4, characterized in that, The side panel (3) of the box has a perforation (34) on the outside of the folding plate (21).

10. A foldable double-layer cardboard box according to claim 9, characterized in that, The bent plate (32) has a connection interface (35) that communicates with the through hole (34).

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