CN215852359U - Protection carton that fragile article anticollision was prevented falling - Google Patents

Abstract

The embodiment of the utility model discloses an anti-collision and anti-falling protective carton for fragile products, which comprises a paperboard layer, a cross buckle layer and a protective layer. The cardboard layer comprises six panels which are spread in a cross shape, the cross buckle layer is arranged on the outer panel surface of the panels, and the cross buckle layer is provided with a pasting part which is attached to the adjacent panels. Six panels of the paperboard layer are respectively provided with a layer of cross buckle layer, and the pasting parts at the joint line of two adjacent panels of the paperboard layer are arranged in a staggered way. The protective layer comprises a flexible supporting layer and a cover plate, an interlayer is formed between the cover plate and the panel, and the flexible supporting layer is filled in the interlayer and fixed on the inner panel surface of the panel. The utility model changes the bearing point of the carton by increasing the thickness of the carton and adjusting the contact angle between the carton and the fragile articles, improves the safety in the packaging and transportation processes, and utilizes the cross buckle structure to ensure that the protective carton can be used and loaded immediately so as to facilitate the packaging of the articles.

Description

Protection carton that fragile article anticollision was prevented falling

Technical Field

The embodiment of the utility model relates to the technical field of transport packaging, in particular to an anti-collision and anti-falling protection carton for fragile products.

Background

Cartons are commonly used as wrappers for goods or as outer wear for the protection of articles. The volume of the carton varies depending on the size of the goods to protect the contents from damage. However, in real life, there are too many fragile articles, such as glass products and ceramic products, which are easily broken during the packaging and transportation process, thereby causing some unnecessary loss of the merchant or the user.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides an anti-collision and anti-falling protection carton for fragile articles, which aims to solve the problem that the fragile articles are extremely easy to crash in the packaging and transporting processes in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

according to the embodiment of the utility model, the anti-collision and anti-falling protection carton for fragile products comprises a paperboard layer, a cross buckle layer and a protection layer, wherein the paperboard layer comprises six panels which are unfolded in a cross shape, the six panels are folded along side lines and are enclosed into a box body structure of the protection carton, the cross buckle layer is arranged on the outer plate surface of the panels, the cross buckle layer horizontally extends outwards from the joint edge of the panels and forms adhesive parts attached to the adjacent panels, the six panels of the paperboard layer are respectively provided with the cross buckle layer, the adhesive parts at the joint edge line of the two adjacent panels of the paperboard layer are arranged in a staggered manner to form the cross buckle structure, the protection layer comprises a flexible supporting layer and a cover plate, the cover plate is fixed on the inner plate surface of the panels, an interlayer is formed between the cover plate and the panels, the flexible supporting layer is filled in the interlayer and is fixed on the inner plate surface of the panels, wherein, a gap for two cover plates to be seamlessly spliced into a three-dimensional structure is formed between the cover plates on the adjacent panels.

Further, first panel, second panel, third panel, fourth panel, fifth panel and the sixth panel that the six panels of cardboard layer were tailor respectively and are formed, and six panels of cardboard layer are under the expanded state, and first panel, second panel, fourth panel and sixth panel arrange along vertically in proper order, and third panel, fourth panel and fifth panel arrange along transversely in proper order, and are formed with the crease between two adjacent panels.

Further, the second panel, the third panel, the fifth panel and the sixth panel have the same height, the first panel and the fourth panel have the same width, and the first panel, the second panel, the third panel, the fourth panel, the fifth panel and the sixth panel have the same length and width.

Further, the first panel comprises an edge A, an edge F and an edge H, the second panel comprises an edge G and an edge K, the third panel comprises an edge L, an edge C and an edge O, the fifth panel comprises an edge M, an edge D and an edge P, the sixth panel comprises an edge Q, an edge B and an edge R, the paperboard layer is arranged in a box structure,

the second panel and the third panel are connected through a first connecting point: the L/G edges are connected;

the second panel and the fifth panel are connected by a second connection point: M/K edge connection;

the third and sixth panels pass through a third connection point: the O/Q edge is connected;

the fifth and sixth panels pass through a fourth connection point: P/R edge connection;

the first panel and the third panel pass through a fifth connection point: F/C edge connection;

the first panel and the fifth panel are connected by a sixth connection point: H/D edge connection;

the first and sixth panels pass through a seventh connection point: the A/B sides are connected.

Furthermore, the cross buckle layer is provided with a plurality of pasting parts at the joint edge of the panels, and the pasting parts are in a continuous arch-shaped structure along the side line direction of the joint edge of the panels, so that a gap for pasting the pasting parts on the adjacent panels is formed between the two adjacent pasting parts on one panel, and the connecting points between the six panels of the paperboard layer are respectively connected and fixed through the pasting part structures on the cross buckle layer.

Furthermore, the pasting part is provided with a crease at the joint edge of the panel.

Further, cardboard layer and apron are the folding constitution of corrugated paper respectively, and the apron is the corrugated paper along the square body structure of the folding formation of crease in advance, wherein, have preset ten creases on the apron, include A crease, B crease, C crease, D crease, E crease, F crease, G crease, H crease, J crease, K crease respectively, the top cap face of apron is in A crease department to and the bottom cap face of apron is formed with the bonding surface of bonding fixation on the face in the panel in H crease department is interior respectively folded, make the apron be the opening setting towards the capping of panel.

Further, the fixed rectangular outward appearance strip in outside on cross knot layer, rectangular outward appearance strip is including being five outward appearance faces that the cross was expanded, and five outward appearance faces fold along the fold line and enclose and establish into the cuboid structure, first outward appearance face, second outward appearance face, third outward appearance face, fourth outward appearance face and the fifth outward appearance face that the five outward appearance faces of rectangular outward appearance strip were tailor respectively and are formed, and five outward appearance faces of rectangular outward appearance strip are under the state of expanding, and first outward appearance face, second outward appearance face, third outward appearance face are arranged along vertically in proper order, and fourth outward appearance face, second outward appearance face and fifth outward appearance face are arranged along transversely in proper order, and are formed with the fold line between two adjacent outward appearance faces, wherein, first outward appearance face includes A fold line, A1 limit, A2 limit, second outward appearance face includes first fold line, second fold line, third fold line, A fourth folding line, the third appearance surface comprises a B folding line, a B1 edge and a B2 edge, the fourth appearance surface comprises a C folding line, a C1 edge and a C2 edge, the fifth appearance surface comprises a D folding line, a D1 edge and a D2 edge, the rectangular appearance strip is enclosed into a cuboid structure,

the first appearance surface, the third appearance surface, the fourth appearance surface and the fifth appearance surface are respectively folded upwards along the first folding line, the second folding line, the third folding line and the fourth folding line;

and the first appearance surface and the fourth appearance surface are connected through an eighth connecting point: splicing A1 and C1;

the first appearance surface and the fifth appearance surface are connected through a ninth connecting point: splicing the edges A2 and D1;

the third appearance surface and the fourth appearance surface are connected through a tenth connecting point: c2 and B1 sides are spliced;

the third appearance surface and the fifth appearance surface are connected through an eleventh connecting point: d2 and B2 sides are spliced;

the first appearance face, the third appearance face, the fourth appearance face and the fifth appearance face are folded inwards along the A folding line, the B folding line, the C folding line and the D folding line respectively, a first connecting face, a second connecting face, a third connecting face and a fourth connecting face are formed in sequence, and the first connecting face, the second connecting face, the third connecting face and the fourth connecting face are sequentially bonded on the inner side of the cuboid structure to form a cross buckle structure.

The embodiment of the utility model has the following advantages: through setting up the protection carton into the cardboard layer, cross knot layer and protective layer, utilize multilayer structure to set up, in order to increase carton thickness, especially protect in the protection carton through flexible supporting layer around fragile article, and set up the apron and cover the outside at flexible supporting layer, in order to adjust the contact angle of carton and fragile article, thereby change the bearing point of carton, improve the security in packing and the transportation, and utilize cross knot structure, make the protection carton can be used promptly and adorn promptly, so that the packing of article.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

Fig. 1 is a schematic diagram illustrating a deployed state of a paperboard layer of a crash-proof and crash-proof protective carton for fragile products according to an embodiment of the utility model;

FIG. 2 is a schematic diagram illustrating a state of a cardboard layer and a body of a crash-proof and crash-proof protective carton for fragile articles according to an embodiment of the present invention;

fig. 3 is a schematic folding view of a cover plate of a crash-proof and crash-proof protective carton for fragile articles according to an embodiment of the present invention;

fig. 4 is a schematic folding view of a rectangular appearance strip of the crash-proof and crash-proof protective carton for fragile products according to the embodiment of the utility model.

In the figure: 1. a first panel; 2. a second panel; 3. a third panel; 4. a fourth panel; 5. a fifth panel; 6. a sixth panel; 7. a cross-button layer; 8. a sticking part; 9. a cover plate; 10. a rectangular appearance strip; 11. a first appearance surface; 12. a second appearance surface; 13. a third appearance surface; 14. a fourth appearance surface; 15. a fifth appearance surface; 16. a first fold line; 17. a second fold line; 18. a third fold line; 19. a fourth fold line; 20. a first connection face; 21. a second connection face; 22. a third connection surface; 23. and a fourth connection surface.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1 and 2, the utility model provides a crash-proof and drop-proof protective carton for fragile products, which comprises a paperboard layer, a cross-buckling layer 7 and a protective layer. The paperboard layer includes six panels that are spread out in a cross, and six panels are folded along the boundary lines and enclose the box structure that becomes the protection carton. Specifically, six panels of the paperboard layer are respectively cut into a first panel 1, a second panel 2, a third panel 3, a fourth panel 4, a fifth panel 5 and a sixth panel 6, and in an unfolded state, the first panel 1, the second panel 2, the fourth panel 4 and the sixth panel 6 are sequentially arranged along the longitudinal direction, the third panel 3, the fourth panel 4 and the fifth panel 5 are sequentially arranged along the transverse direction, and a crease is formed between two adjacent panels. The heights of the second panel 2, the third panel 3, the fifth panel 5 and the sixth panel 6 are the same, the widths of the first panel 1 and the fourth panel 4 are the same, and the lengths and the widths of the first panel 1, the second panel 2, the third panel 3, the fourth panel 4, the fifth panel 5 and the sixth panel 6 are the same. Six panels are folded along the boundary line and are enclosed the box structure who establishes into the protection carton and include:

sequentially taking a first panel 1 comprising an A edge, an F edge and an H edge, a second panel 2 comprising a G edge and a K edge, a third panel 3 comprising an L edge, a C edge and an O edge, a fifth panel 5 comprising an M edge, a D edge and a P edge, and a sixth panel 6 comprising a Q edge, a B edge and an R edge, so that under the condition that six panels of the paperboard layer are enclosed into a box body structure,

the second panel 2 and the third panel 3 pass through the first connection point: the L/G edges are connected;

the second panel 2 and the fifth panel 4 pass through the second connection point: M/K edge connection;

the third panel 3 and the sixth panel 6 pass through a third connection point: the O/Q edge is connected;

fifth panel 5 and sixth panel 6 pass through the fourth connection point: P/R edge connection;

the first panel 1 and the third panel 3 pass through a fifth connection point: F/C edge connection;

the first panel 1 and the fifth panel 5 pass through the sixth connection point: H/D edge connection;

the first panel 1 and the sixth panel 6 pass through a seventh connection point: the A/B sides are connected.

Through the structural arrangement, the paperboard layer can be assembled into the box body structure of the protective carton quickly.

As described above, the cross fastening layer 7 is disposed on the outer surface of the panel, and the cross fastening layer 7 horizontally extends outward at the joint edge of the panel, and forms the adhesive portion 8 attached to the adjacent panel. Six panels of the paperboard layer are respectively provided with a layer of cross buckle layer 7, and the pasting parts 8 at the joint edge line of two adjacent panels of the paperboard layer are arranged in a staggered way to form a cross buckle structure. Wherein, cross knot layer 7 is formed with a plurality of portion of pasting 8 in the joining limit department of panel, and a plurality of portion of pasting 8 along the sideline direction that the panel joined the limit, is continuous "bow" shape structure, makes two adjacent portions of pasting 8 on one of them panel form the attached clearance of portion of pasting 8 on the adjacent panel of confession, and the connecting point department between six panels of cardboard layer is fixed through 8 structural connection of portion of pasting on cross knot layer 7 respectively. Preferably, the pasting part 8 forms a crease at the joint edge of the panel, and the pasting part 8 adopts a pasting or glue structure, and if the protective carton needs to be recycled, the pasting part 8 can also adopt a pasting chain, so as to be convenient for repeated use.

The protective layer comprises a flexible support layer and a cover plate 9. The cover plate 9 is fixed on the inner plate surface of the panel, and an interlayer is formed between the cover plate 9 and the panel. The flexible supporting layer is filled in the interlayer and fixed on the inner plate surface of the panel. Preferably, the flexible supporting layer is mainly made of foam, and besides the foam, the flexible supporting layer can be made of sponge, foam and air filling bags or any material capable of providing protective flexibility, so that the thickness of the carton is increased, and particularly, the flexible supporting layer is protected around fragile products in the protective carton, and the fragile products are prevented from being damaged in the transportation process. Wherein, be formed with the clearance that supplies two apron 9 seamless amalgamation to become spatial structure between the apron 9 on the adjacent panel to the contact angle of the cardboard layer and the fragile article of adjustment carton, thereby change the stress point of carton, improve the security in packing and the transportation.

As described above, referring to fig. 3, the cardboard layer and the cover sheet 9 are each formed by folding corrugated paper, and the cover sheet 9 has a cubic structure formed by folding corrugated paper along pre-folding marks. Wherein, preset ten creases on the apron 9, respectively include the A crease, the B crease, the C crease, the D crease, the E crease, the F crease, the G crease, the H crease, the J crease, the K crease, and the top cap face of apron in A crease department, and the bottom cap face of apron is formed with the adhesive surface of adhesive fixation on the face in the panel in H crease department infolding respectively, make apron 9 be the opening setting towards the capping of panel, thereby be convenient for the apron to fix on the panel, and cover the outside at flexible supporting layer.

One preferred embodiment is: as shown in fig. 2 and 4, a rectangular appearance strip 10 is fixed to the outer side of the cross fastening layer 7. The rectangular appearance strip 10 includes five appearance faces which are spread in a cross shape, and the five appearance faces are folded along folding lines and enclosed into a rectangular parallelepiped structure. The rectangular appearance strip 10 comprises a first appearance surface 11, a second appearance surface 12, a third appearance surface 13, a fourth appearance surface 14 and a fifth appearance surface 15, wherein the first appearance surface 11, the second appearance surface 12, the third appearance surface 13, the fourth appearance surface 12 and the fifth appearance surface 15 are formed by cutting the five appearance surfaces of the rectangular appearance strip 10 respectively, the first appearance surface 11, the second appearance surface 12 and the third appearance surface 13 are sequentially arranged along the longitudinal direction in an unfolded state, the fourth appearance surface 14, the second appearance surface 12 and the fifth appearance surface 15 are sequentially arranged along the transverse direction, and a folding line is formed between every two adjacent appearance surfaces. Specifically, the first appearance surface 11 comprises an a folding line, an a1 side and an a2 side, the second appearance surface 12 comprises a first folding line 16, a second folding line 17, a third folding line 18 and a fourth folding line 19, the third appearance surface 13 comprises a B folding line, a B1 side and a B2 side, the fourth appearance surface 14 comprises a C folding line, a C1 side and a C2 side, the fifth appearance surface 15 comprises a D folding line, a D1 side and a D2 side, and by the arrangement of the structure, the rectangular appearance strip 10 is enclosed to be in a rectangular parallelepiped structure state,

the first, third, fourth and fifth exterior surfaces 11, 13, 14 and 15 are folded upward along first, second, third and fourth fold lines 16, 17, 18 and 19, respectively;

and the first appearance face 11 and the fourth appearance face 14 pass through an eighth connection point: splicing A1 and C1;

the first design surface 11 and the fifth design surface 5 are connected by a ninth connection point: splicing the edges A2 and D1;

the third appearance surface 13 and the fourth appearance surface 14 are connected by a tenth connection point: c2 and B1 sides are spliced;

the third appearance surface 13 and the fifth appearance surface 15 pass through an eleventh connection point: d2 and B2 sides are spliced;

through the structure mode, the rectangular appearance strip 10 forming the cuboid is folded quickly, on the basis, the first appearance face 11, the third appearance face 13, the fourth appearance face 14 and the fifth appearance face 15 are folded inwards along the folding line A, the folding line B, the folding line C and the folding line D respectively, and a first connecting face 20, a second connecting face 21, a third connecting face 22 and a fourth connecting face 23 are formed in sequence, the first connecting face 20, the second connecting face 21, the third connecting face 22 and the fourth connecting face 23 are sequentially bonded on the inner side of the cuboid structure to form a cross buckle structure, and the cross buckle structure is fixed on the protective carton in a bonding mode. Wherein, the cross knot connected mode of rectangle outward appearance strip 10 is internal connection, and the cross knot connected mode of cross knot layer 7 is external connection, through the setting of rectangle outward appearance strip 10 to the intensity of reinforcing protection carton avoids the mutual collision between the carton, and increases its aesthetic property, and rectangle outward appearance strip 10 can design according to the demand and can not design, and rectangle outward appearance strip 10 on the protection carton of different outward appearances also is different.

According to the utility model, the protective carton is provided with the paperboard layer, the cross buckle layer 7 and the protective layer, the multi-layer structure is adopted to increase the thickness of the carton, particularly, the flexible supporting layer is arranged in the protective carton to protect the periphery of fragile articles, the cover plate 9 is arranged to cover the outer side of the flexible supporting layer to adjust the contact angle between the carton and the fragile articles, so that the stress bearing point of the carton is changed, the safety in the packaging and transportation processes is improved, and the cross buckle structure is adopted to enable the protective carton to be used and loaded immediately so as to facilitate the packaging of the articles.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims (8)

1. The utility model provides a protection carton that fragile article anticollision was prevented falling which characterized in that: the protective carton comprises a paperboard layer, a cross buckle layer and a protective layer, the paperboard layer comprises six panels which are unfolded in a cross shape, and the six panels are folded along the edge lines and are enclosed into a box body structure for protecting the carton, the cross buckle layer is arranged on the outer panel surface of the panels, and the cross buckle layer horizontally extends outwards at the joint edge of the panels, and forms a pasting part attached on the adjacent panel, six panels of the paperboard layer are respectively provided with a layer of cross buckle layer, the pasting parts at the joint line of the two adjacent panels of the paperboard layer are arranged in a staggered way, so as to form a cross buckle structure, the protective layer comprises a flexible supporting layer and a cover plate, the cover plate is fixed on the inner plate surface of the panel, an interlayer is formed between the cover plate and the panel, the flexible supporting layer is filled in the interlayer and fixed on the inner plate surface of the panel, wherein, a gap for two cover plates to be seamlessly spliced into a three-dimensional structure is formed between the cover plates on the adjacent panels.

2. The crash-proof and crash-proof protective carton for fragile articles according to claim 1, wherein: first panel, second panel, third panel, fourth panel, fifth panel and the sixth panel that forms are tailor respectively to six panels on cardboard layer, and six panels on cardboard layer are under the expansion state, and first panel, second panel, fourth panel and sixth panel are arranged along vertically in proper order, and third panel, fourth panel and fifth panel are arranged along transversely in proper order, and are formed with the crease between two adjacent panels.

3. The crash-proof and crash-proof protective carton for fragile articles according to claim 2, wherein: the height of the second panel, the height of the third panel, the height of the fifth panel and the height of the sixth panel are the same, the width of the first panel and the width of the fourth panel are the same, and the length and the width of the first panel, the length of the second panel, the width of the third panel, the width of the fourth panel, the width of the fifth panel and the width of the sixth panel are the same.

4. The crash-proof and crash-proof protective carton for fragile articles according to claim 2, wherein: the first panel comprises an edge A, an edge F and an edge H, the second panel comprises an edge G and an edge K, the third panel comprises an edge L, an edge C and an edge O, the fifth panel comprises an edge M, an edge D and an edge P, the sixth panel comprises an edge Q, an edge B and an edge R, the paperboard layer is enclosed into a box body structure,

the second panel and the third panel are connected through a first connecting point: the L/G edges are connected;

the second panel and the fifth panel are connected by a second connection point: M/K edge connection;

the third and sixth panels pass through a third connection point: the O/Q edge is connected;

the fifth and sixth panels pass through a fourth connection point: P/R edge connection;

the first panel and the third panel pass through a fifth connection point: F/C edge connection;

the first panel and the fifth panel are connected by a sixth connection point: H/D edge connection;

the first and sixth panels pass through a seventh connection point: the A/B sides are connected.

5. The crash-proof and fall-proof protective carton for fragile products according to claim 4, wherein: the cross-buckling layer is provided with a plurality of pasting parts at the joint edge of the panels, the pasting parts are of continuous arch-shaped structures along the side line direction of the joint edge of the panels, a gap for pasting the pasting parts on the adjacent panels is formed between every two adjacent pasting parts on one panel, and the connecting points between the six panels on the paperboard layer are fixedly connected through the pasting parts on the cross-buckling layer.

6. The crash-proof and crash-proof protective carton for fragile articles according to claim 1, wherein: the pasting part is provided with a crease at the joint edge of the panel.

7. The crash-proof and crash-proof protective carton for fragile articles according to claim 1, wherein: cardboard layer and apron are the folding constitution of corrugated paper respectively, and the apron is the corrugated paper along the square body structure of the folding formation of crease in advance, wherein, have preset ten creases on the apron, include A crease, B crease, C crease, D crease, E crease, F crease, G crease, H crease, J crease, K crease respectively, the top cap face of apron is in A crease department to and the bottom face of apron is formed with the bonding face of bonding fixation on the face in the panel in H crease department is interior respectively folded, make the apron be the opening setting towards the capping of panel.

8. The crash-proof and crash-proof protective carton for fragile articles according to claim 1, wherein: the rectangle appearance strip is fixed in the outside of the cross buckle layer, the rectangle appearance strip comprises five appearance faces which are in a cross unfolding mode, the five appearance faces are folded along folding lines and are arranged in a surrounding mode to form a cuboid structure, the five appearance faces of the rectangle appearance strip are respectively cut to form a first appearance face, a second appearance face, a third appearance face, a fourth appearance face and a fifth appearance face, the five appearance faces of the rectangle appearance strip are in an unfolding mode, the first appearance face, the second appearance face and the third appearance face are sequentially arranged in a longitudinal direction, the fourth appearance face, the second appearance face and the fifth appearance face are sequentially arranged in a transverse direction, a folding line is formed between every two adjacent appearance faces, the first appearance face comprises an A folding line, an A1 side and an A2 side, the second appearance face comprises a first folding line, a second folding line, a third folding line and a fourth folding line, the third appearance surface comprises a B folding line, a B1 edge and a B2 edge, the fourth appearance surface comprises a C folding line, a C1 edge and a C2 edge, the fifth appearance surface comprises a D folding line, a D1 edge and a D2 edge, the rectangular appearance strip is enclosed to be in a cuboid structure state,

the first appearance surface, the third appearance surface, the fourth appearance surface and the fifth appearance surface are respectively folded upwards along the first folding line, the second folding line, the third folding line and the fourth folding line;

and the first appearance surface and the fourth appearance surface are connected through an eighth connecting point: a1 and C1 are connected;

the first appearance surface and the fifth appearance surface are connected through a ninth connecting point: the A2 and the D1 are connected;

the third appearance surface and the fourth appearance surface are connected through a tenth connecting point: c2 and B1 are connected;

the third appearance surface and the fifth appearance surface are connected through an eleventh connecting point: d2 and B2 are connected;

the first appearance face, the third appearance face, the fourth appearance face and the fifth appearance face are folded inwards along the A folding line, the B folding line, the C folding line and the D folding line respectively, a first connecting face, a second connecting face, a third connecting face and a fourth connecting face are formed in sequence, and the first connecting face, the second connecting face, the third connecting face and the fourth connecting face are sequentially bonded on the inner side of the cuboid structure to form a cross buckle structure.

Images