Grey board paper box

Abstract

The utility model relates to the technical field of packaging boxes, in particular to a grey board paper box, which comprises a paper board main body obtained by die cutting a single piece of grey board paper, the paper board main body comprises a bottom board and four groups of side boards, the four groups of side boards are respectively connected with four edges of the bottom board through break angles, two side edges of each group of side boards are provided with joint surfaces, and the joint surfaces are connected with the bottom board. Every two adjacent sets of side plates are attached and spliced through the connecting faces, the four sets of side plates are folded along the folded corners to form surrounding edges in a surrounding mode, each set of side plates comprises a main plate, a back plate and folded edges, the back plates are connected with the main plates through the folded edges, the back plates are folded along the folded edges to be attached to the main plates to form the side plates, and the side plates are connected with the main plates through the folded edges. The paper box is formed by processing and folding a whole piece of grey board paper, and has the advantages that the folding step is simple and convenient, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging boxes, in particular to a grey board paper box. Background Art

[0002] Carton packaging, to a large extent, uses its exquisite shape and decoration to promote and beautify products and enhance their competitiveness. Because cartons are widely used in the packaging field, the material used is particularly important. For example, gray cardboard cartons are made from recycled waste paper and are an environmentally friendly packaging material. During the carton processing process, it is usually formed by folding a piece of cut cardboard.

[0003] Patent CN211766932U discloses a paper box, including face paper obtained by die-cutting a single sheet of paper and a supporting edge, the face paper including a bottom surface and side surfaces connected to the side edges of the bottom surface by a first folding line, and multiple groups of side surfaces are folded around to form a first frame-like structure; the edge is bonded to the side surfaces, and multiple groups of edges are bonded around to form a second frame-like structure bonded to the inner side of the first frame-like structure. The above patent only sets edges on the side edges of the paper box. Although it solves the problem of saving gray board materials at the bottom of the paper box, when assembling the paper box, it is necessary to fold the edges first and then fold the face paper. There is still a problem of cumbersome folding steps. The edges also need to be produced and processed separately, which further reduces production efficiency. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a grey board paper box. The paper box of the present invention is formed by folding a whole sheet of grey board paper, and has the advantages of simple folding steps and helping to improve production efficiency.

[0005] The technical solution adopted by the present invention is as follows: A gray board paper box, comprising a cardboard main body obtained by die-cutting a single gray board paper, the cardboard main body comprising a bottom panel and four groups of side panels, the four groups of side panels are respectively connected to the four sides of the bottom panel by folding corners, both side edges of each group of side panels are provided with joining surfaces, two adjacent groups of side panels are assembled by fitting together through the joining surfaces, the four groups of side panels are folded around along the folding corners to form a surrounding edge, each group of side panels comprises a main panel, a back panel and a folding edge, the back panel is connected to the main panel by the folding edge, and the back panel is folded along the folding edge until it fits with the main panel to form a side panel.

[0006] The main board is connected to the bottom board via a folded corner, and the back board is connected to the side of the main board away from the bottom board via a folded edge. When the four groups of side boards are folded around along the folded corner to form a surrounding edge, the edge of the back board abuts against the bottom board, and the two adjacent back boards also abut against each other.

[0007] The folded edge includes a tapered edge, and the main board and the back board are both provided with oblique conical surfaces adapted to the tapered edge. When the back board is folded along the folded edge to fit with the main board, the main board and the back board are respectively fitted with the two sides of the tapered edge through the oblique conical surfaces.

[0008] The folded edge further includes a flat end surface. When the four groups of side panels are folded around along the folded corners to form a surrounding edge, the flat end surfaces of each group of side panels are sequentially connected to form four sides of the surrounding edge.

[0009] Both ends of the folded edges are provided with connecting corners. When the four groups of side panels are folded around along the folded corners to form a surrounding edge, adjacent folded edges are fitted and assembled through the connecting corners.

[0010] The inclination angles of the connecting surface and the connecting angle are both 45°.

[0011] The folded corner includes a first inclined surface arranged on the bottom plate and a second inclined surface arranged on the main plate, and the first inclined surface is adapted to the second inclined surface.

[0012] The beneficial effects of the present invention are as follows: the paper box of the present invention is folded and formed by a whole sheet of grey cardboard, which has the advantages of simple folding steps and helps to improve production efficiency. The folded corners and folded edges are directly processed on the grey cardboard, and the side panels are folded along the folded corners to directly form the surrounding edges. The back panel and the main board are folded along the folded edges to form the side panels. The double-layer structure of the side panels greatly improves the structural strength of the surrounding edges, and there is no need to produce and process the surrounding edges separately. The two adjacent sets of side panels are assembled by fitting together through the connecting surfaces, and glue can also be applied on the connecting surfaces for fixation, so that the mutual support structure between the side panels is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0014] Figure 1 This is a schematic structural diagram of a gray board paper box when it is unfolded;

[0015] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model during folding and forming;

[0017] Figure 4 This is a structural diagram of the utility model without a set of side panels;

[0018] Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0019] Figure 6 It is a partial enlarged schematic diagram of the side surface of the side panel of the present invention;

[0020] In the figure, 1-bottom plate, 2-side plate, 3-folded corner, 4-connecting surface, 5-main plate, 6-back plate, 7-folded edge, 8-tapered edge, 9-oblique conical surface, 10-flat end surface, 11-connecting angle, 12-first inclined surface, 13-second inclined surface. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0022] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0023] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0024] like Figures 1 to 6 As shown, an embodiment of the present invention is a gray board paper box, comprising a cardboard body obtained by die-cutting a single gray board paper, the cardboard body comprising a bottom panel 1 and four groups of side panels 2, the four groups of side panels 2 are respectively connected to the four sides of the bottom panel 1 through folding corners 3, each group of side panels 2 is provided with a connecting surface 4 on both sides of the side panels, the two adjacent groups of side panels 2 are fitted together through the connecting surface 4, the four groups of side panels 2 are folded around along the folding corners 3 to form a surrounding edge, each group of side panels 2 comprises a main panel 5, a back panel 6 and a folding edge 7, the back panel 6 is connected to the main panel 5 through the folding edge 7, and the back panel 6 is folded along the folding edge 7 until it is fitted with the main panel 5 to form a side panel 2.

[0025] The beneficial effects of such a setting are as follows: the paper box of the utility model is folded and formed using a whole sheet of grey cardboard, which has the advantages of simple folding steps and helps to improve production efficiency. The folded corners and folded edges are directly processed on the grey cardboard, and the side panels are folded along the folded corners to directly form the edges. The back panel and the main panel are folded along the edges to form the side panels. The double-layer structure of the side panels greatly improves the structural strength of the edges, and there is no need to produce and process the edges separately. The two adjacent sets of side panels are assembled by fitting together through the connecting surfaces, and glue can also be applied on the connecting surfaces for fixation, so that the mutual support structure between the side panels is more stable.

[0026] It is further configured that the main board 5 is connected to the bottom board 1 via a folded corner 3, and the back board 6 is connected to the side of the main board 5 away from the bottom board 1 via a folded edge 7. When the four groups of side panels 2 are folded around along the folded corner 3 to form a surrounding edge, the edge of the back board 6 abuts against the bottom board 1, and the two adjacent back boards 6 also abut against each other.

[0027] The beneficial effects of this arrangement are as follows: when the paper box is folded and formed, the back panel is located on one side of the inner periphery of the edge, and at the same time, the back panel not only abuts against the bottom panel but also against the adjacent back panel. There are multiple supporting force points between the back panel, the main panel and the bottom panel, providing stable support.

[0028] It is further provided that the folded edge 7 includes a conical edge 8, and the main board 5 and the back board 6 are both provided with an oblique conical surface 9 adapted to the conical edge 8. When the back board 6 is folded along the folded edge 7 to fit with the main board 5, the main board 5 and the back board 6 are respectively fitted with the two sides of the conical edge 8 through the oblique conical surface 9.

[0029] The beneficial effects of this setting are as follows: the folded conical edges can cooperate with the main board and back board on both sides at the same time. When the back board is folded, it can ensure that it fits with the conical edges and the main board, fitting perfectly. The structural strength is higher and it is easier to fold.

[0030] It is further provided that the folded edge 7 further includes a flat end surface 10. When the four groups of side panels 2 are folded around along the folded corners 3 to form a peripheral edge, the flat end surfaces 10 of each group of side panels 2 are sequentially connected to form four sides of the peripheral edge.

[0031] The beneficial effects of this arrangement are as follows: the side of the folded edge facing outward has a flat end surface. When the side panels are folded and formed, the flat end surfaces of each group of side panels are connected in sequence to form a coplanar surface, making the edges of the side panels smoother and preventing creases. The width of the folded edge is the thickness of the overlapping back panel and the main panel.

[0032] It is further provided that both ends of the folded edges 7 are provided with connecting corners 11 , and when the four groups of side panels 2 are folded around along the folded corners 3 to form a surrounding edge, the adjacent folded edges 7 are fitted and assembled through the connecting corners 11 .

[0033] The beneficial effects of this arrangement are as follows: the connection angle allows the folded edges of each set of side panels to fit together, increasing the contact area and providing more stable support.

[0034] It is further provided that the inclination angles of the connecting surface 4 and the connecting angle 11 are both 45°.

[0035] The beneficial effects of such a setting are as follows: in this embodiment, an inclination angle of 45° is the optimal solution, which makes processing easier and effectively reduces costs, but it is not limited to 45°. For example, the connecting surface on one side panel adopts an inclination angle of 30°, and the connecting surface on the adjacent side panel adopts an inclination angle of 60° to ensure that the two connecting surfaces can fit together, reduce limitations, and form a vertical support angle between the two side panels.

[0036] It is further provided that the corner 3 includes a first inclined surface 12 provided on the bottom plate 1 and a second inclined surface 13 provided on the main plate 5 , and the first inclined surface 12 is adapted to the second inclined surface 13 .

[0037] The beneficial effects of this arrangement are as follows: with the cooperation of the first inclined surface and the second inclined surface, the main board is helped to fold, and the main board can form a vertical support angle with the bottom plate, providing more stable vertical support.

[0038] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A grey board paper box, characterized by: The invention comprises a cardboard body obtained by die-cutting a single grey board paper, wherein the cardboard body comprises a bottom plate (1) and four groups of side plates (2), wherein the four groups of side plates (2) are respectively connected to the four sides of the bottom plate (1) through folding corners (3), and each group of side plates (2) is provided with a connecting surface (4) on both sides of the side plates, and two adjacent groups of side plates (2) are fitted together through the connecting surface (4), and the four groups of side plates (2) are folded around along the folding corners (3) to form a surrounding edge, and each group of side plates (2) comprises a main plate (5), a back plate (6) and a folding edge (7), wherein the back plate (6) is connected to the main plate (5) through the folding edge (7), and the back plate (6) is folded along the folding edge (7) until it fits with the main plate (5) to form a side plate (2).

2. The grey board paper box according to claim 1, characterized in that: The main board (5) is connected to the bottom board (1) via a folded corner (3), and the back board (6) is connected to a side of the main board (5) away from the bottom board (1) via a folded edge (7). When the four groups of side boards (2) are folded around along the folded corner (3) to form a surrounding edge, the edge of the back board (6) abuts against the bottom board (1), and two adjacent back boards (6) also abut against each other.

3. The grey board paper box according to claim 2, characterized in that: The folded edge (7) includes a conical edge (8), and the main board (5) and the back board (6) are both provided with an oblique conical surface (9) adapted to the conical edge (8). When the back board (6) is folded along the folded edge (7) to fit with the main board (5), the main board (5) and the back board (6) are respectively fitted with two sides of the conical edge (8) through the oblique conical surface (9).

4. The grey board paper box according to claim 3, characterized in that: The folded edge (7) further comprises a flat end surface (10). When the four groups of side panels (2) are folded around along the folded corners (3) to form a peripheral edge, the flat end surfaces (10) of each group of side panels (2) are sequentially connected to form four sides of the peripheral edge.

5. The grey board paper box according to claim 1, characterized in that: Both ends of the folded edges (7) are provided with connecting corners (11). When the four groups of side panels (2) are folded around along the folded corners (3) to form a surrounding edge, adjacent folded edges (7) are fitted and assembled through the connecting corners (11).

6. The grey board paper box according to claim 5, characterized in that: The inclination angles of the connecting surface (4) and the connecting angle (11) are both 45°.

7. The grey board paper box according to claim 1, characterized in that: The folded corner (3) comprises a first inclined surface (12) provided on the bottom plate (1) and a second inclined surface (13) provided on the main plate (5), wherein the first inclined surface (12) is adapted to the second inclined surface (13).

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