Flat structure and packaging box
By incorporating V-grooves and reinforcing layers into the flat panel structure, the problem of inaccurate control of the packaging box's curved surface was solved, achieving harmony and stability between the packaging box and the electronic product's appearance, thus enhancing aesthetics and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN YUTO PACKAGING TECH
- Filing Date
- 2021-12-14
- Publication Date
- 2026-06-05
Smart Images
Figure CN116262557B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of packaging container technology, specifically to a flat panel structure and a packaging box. Background Technology
[0002] In the consumer electronics industry, rounded corners of rectangles are the most common design. Almost all common consumer electronic products on the market, such as mobile phones, tablets, and power banks, adopt the design element of rounded corners of rectangles in their appearance. This is also the design form that consumers are most familiar with and easily accept.
[0003] In the field of consumer electronics packaging, limitations imposed by paper properties, production processes, and packaging equipment mean that, despite numerous attempts by designers both domestically and internationally to design the rectangular edges of outer packaging with rounded corners to achieve consistency and harmony between the product and packaging's internal and external design elements, this remains largely difficult, except for a small number of paper-plastic packaging projects and non-environmentally friendly plastic packaging projects. Only in some low-end packaging, such as food cartons, has a relatively crude method been used to achieve curved paper surfaces, but these surfaces are difficult to control and extremely imprecise. Therefore, how to precisely control the curved surfaces of packaging boxes is a crucial issue that those skilled in the art should consider. Summary of the Invention
[0004] To address the aforementioned technical problems, this application provides a flat panel structure and a packaging box to precisely control the curvature of the packaging box.
[0005] To address the aforementioned technical problems, this application provides a flat plate structure, which includes multiple sidewall regions and a connecting region connecting adjacent sidewall regions. The surface of the connecting region facing the first side forms multiple V-shaped grooves spaced apart along the arrangement direction of the adjacent sidewall regions. The connecting region is used to allow the multiple sidewall regions to enclose and form a box after bending. The multiple V-shaped grooves extend along the intersection line of the sidewall regions and the connecting region, and the included angle of the V-shaped grooves is set according to grooving influence parameters, including at least one of the following: the bending angle of the connecting region, the material of the connecting region, and the number of V-shaped grooves.
[0006] In some embodiments, the plurality of V-grooves are of the same size and are equally spaced; and / or,
[0007] The formula for calculating the included angle of the V-groove is as follows:
[0008] θ V = (180-θ1) / n+k
[0009] Where, θ V θ1 is the included angle of the V-groove; n is the bending angle of the connection area; k is the number of V-grooves; and k is the correction angle value determined according to the material of the connection area, with a value range of 0°-7°.
[0010] In some embodiments, the material of the connecting area includes at least one of adhesive material and paper material; when the connecting area is made of paper material, k is 3-7°.
[0011] In some embodiments, the connecting area includes a first end and a second end respectively connected to two adjacent sidewall areas, a plurality of V-grooves located between the first end and the second end, a first bend formed on the first end facing the first side, the first bend being used to form a first bend position between the connecting area and one of the sidewall areas; a second bend formed on the second end facing the first side, the second bend being used to form a second bend position between the connecting area and the other sidewall area; wherein, both the first bend and the second bend are groove structures.
[0012] In some embodiments, the depth of the groove structure is less than the depth of the V-groove.
[0013] In some embodiments, a plurality of V-grooves are of the same size and are equally spaced; the V-grooves include a first V-groove adjacent to the first end and a second V-groove adjacent to the second end; the distance between the first bend and the first V-groove, the distance between the second bend and the second V-groove, and the distance between two adjacent V-grooves are all equal.
[0014] In some embodiments, a reinforcing layer is further included, which is disposed on the side of the connection area opposite to the first side.
[0015] In some embodiments, the reinforcing layer is at least one of a film layer or a coating layer.
[0016] This application also provides a packaging box, including a box body formed by the above-described flat plate structure.
[0017] In some embodiments, the packaging box includes a box body, the box body includes a plurality of sidewalls, the plurality of sidewalls are arranged along a first direction to form a through hole, at least a pair of adjacent sidewalls are connected by a curved connecting section, the curved connecting section is formed by bending the connecting area; the box body also includes a hole-blocking assembly, the hole-blocking assembly includes a first top piece and a second top piece, the first top piece and the second top piece are respectively disposed on two openings of the through hole to form a closed structure; wherein, the first top piece and the second top piece respectively include a sheet body and a plurality of insert pieces flipped and connected to the outer periphery of the sheet body, the sheet body is flipped and connected to one of the sidewalls, and the insert pieces can extend into the through hole and abut against the side of the sidewall facing the through hole.
[0018] The flat plate structure provided in this application adds a connecting area between adjacent sidewall areas and sets multiple V-shaped grooves in the connecting area. These V-shaped grooves are spaced apart along the arrangement direction of the adjacent sidewall areas and extend along the intersection line of the sidewall areas and the connecting area. In this way, when the connecting area is bent along the intersection line of the sidewall areas and the connecting area, the multiple V-shaped grooves deform, the two inclined walls of the V-shaped grooves move closer to each other, and the space within the V-shaped grooves gradually decreases. The originally straight connecting area becomes curved, and two adjacent sidewall areas form two sidewalls, which are smoothly connected by the curved connecting area. Therefore, the flat plate structure provided in this application can achieve an arc-shaped transition between adjacent sidewalls of the box when forming the box body. Furthermore, the curvature of each part of the connecting area can be precisely controlled by changing the arrangement of the V-shaped grooves, the bending angle of the connecting area, the number of V-shaped grooves, and the material of the connecting area, resulting in minimal difference from the set curved surface. Thus, precise shaping of the curved surface between the sidewalls of the box body is achieved. Attached Figure Description
[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0020] Figure 1 This is a partial structural diagram of a flat plate structure according to an embodiment of this application;
[0021] Figure 2 This is a partial structural diagram of a flat plate structure in a bent state according to an embodiment of this application;
[0022] Figure 3 This is a schematic diagram of a flat plate structure according to an embodiment of this application;
[0023] Figure 4 for Figure 3 The diagram shows the structure of the packaging box formed by the flat panel structure in a closed state.
[0024] Figure 5 for Figure 3 The diagram shows the structure of the packaging box formed by the flat panel structure in the open state.
[0025] Figure 6 For Figure 5 The diagram shows the structure of the second top plate.
[0026] Figure label:
[0027] 1. Side wall area;
[0028] 2. Connection area; 21. V-groove; 22. First end; 23. Second end; 24. First bend; 25. Second bend; 26. First V-groove; 27. Second V-groove;
[0029] 3. Reinforcing layer;
[0030] 4. Box body; 41. Side wall; 42. Curved connecting section;
[0031] 5. Hole plugging assembly; 51. First top piece; 52. Second top piece; 53. Piece body; 54. Insertion piece; 55. Hanging part; 56. First hanging wall; 57. Second hanging wall; 58. Hanging hole;
[0032] 6. Top panel area; 61. First top panel area; 62. Second top panel area; 63. Panel body area; 64. Insertion panel area; 65. First hanging wall area; 66. Second hanging wall area; 67. Hanging hole.
[0033] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation
[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0035] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0036] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] To better understand this application, the following will be combined with... Figures 1 to 6 The embodiments of this application are described below.
[0038] Figure 1 This is a partial structural diagram of a flat plate structure according to an embodiment of this application. Figure 2 This is a partial structural diagram of a flat plate structure in a bent state according to an embodiment of this application.
[0039] Please see Figure 1 and Figure 2 The flat plate structure provided in this application embodiment includes multiple side wall areas 1 and a connecting area 2 connecting adjacent side wall areas 1; the surface of the connecting area 2 facing the first side forms multiple V-shaped grooves 21 spaced apart along the arrangement direction of adjacent side wall areas 1, and the connecting area 2 is used to make the multiple side wall areas 1 enclose to form a box after bending.
[0040] Among them, multiple V-grooves 21 extend along the intersection of the side wall area 1 and the connecting area 2. The included angle of the V-grooves is set according to the grooving influence parameters, which include at least one of the following: the bending angle of the connecting area 2, the material of the connecting area 2, the number of V-grooves 21, etc.
[0041] In an alternative embodiment, a plurality of V-grooves 21 extend along the intersection of the sidewall region 1 and the connection region 2 to the entire connection region 2.
[0042] It should be noted that the bending angle of the connecting area 2 can refer to the included angle between the two ends of the connecting area 2 and the adjacent side wall area 1 after bending. That is, the angle between the two perpendicular lines drawn at the two ends is the bending angle.
[0043] The included angle of the V-groove 21 is determined by the bending angle of the connecting area 2, the material of the connecting area 2, and the number of V-grooves 21. Specifically, when the other variables are fixed, the smaller the bending angle of the connecting area 2, the larger the included angle of the V-groove 21. When the other variables are fixed, the more V-grooves 21 there are, the smaller the included angle of the V-groove 21.
[0044] Furthermore, the material of the connecting area 2 also plays a crucial role in the included angle of the V-groove 21. For example, when the other variables are determined, the included angle of the V-groove 21 is larger when paper material is used compared to when adhesive material is used. The adhesive material can be sheets such as PVC or PET.
[0045] The flat plate structure provided in this application embodiment adds a connecting region 2 between adjacent sidewall regions 1, and provides multiple V-shaped grooves 21 in the connecting region 2. The multiple V-shaped grooves 21 are spaced apart along the arrangement direction of the adjacent sidewall regions 1 and extend along the intersection line of the sidewall regions 1 and the connecting region 2. In this way, the connecting region 2 is bent along the intersection line of the sidewall regions 1 and the connecting region 2, such as... Figure 2 As shown, multiple V-grooves 21 deform, the two inclined walls of the V-grooves 21 approach each other, the space inside the V-grooves 21 gradually becomes smaller, the originally straight connecting area 2 becomes curved, the two adjacent side wall areas 1 form two side walls, and the two side walls are smoothly connected by the curved connecting area 2.
[0046] Therefore, the flat plate structure provided in this application embodiment can achieve an arc-shaped transition between adjacent sidewalls of the box when forming the box body. Furthermore, the curvature of each part of the connecting area 2 can be precisely controlled by changing the arrangement of the V-grooves 21, the bending angle of the connecting area 2, the number of V-grooves 21, and the material of the connecting area 21, resulting in a very small difference from the set curved surface. Thus, precise shaping of the curved surfaces between the sidewalls of the box body is achieved. Moreover, when the above-mentioned box body forms a packaging box, if the packaged item is an electronic product with rectangular rounded corners, it can form similar design elements with the item inside the box, greatly improving the aesthetics and premium feel of the packaging box and enhancing the user experience.
[0047] It should be noted that by changing the arrangement and angle of the V-grooves 21, various types of curved surfaces can be formed, such as circular arc surfaces with uniform curvature and parabolic surfaces with inconsistent curvature. The means of influencing the arrangement of the V-grooves 21 include changing the number of V-grooves 21, changing the spacing between the individual V-grooves 21, and changing the dimensions of the V-grooves 21.
[0048] For example, when it is necessary to form a parabolic curved surface, the multiple V-grooves 21 are set to be non-uniformly distributed. That is, the spacing of the multiple V-grooves 21 in the part is calculated according to the curvature of each part, that is, the density of the V-grooves 21 in that part. Each part is calculated and arranged separately, thereby forming the desired curved surface shape.
[0049] In some alternative implementations, the multiple V-grooves 21 are the same size and are equally spaced.
[0050] In some alternative embodiments, the formula for calculating the included angle of the V-groove 21 includes:
[0051] θV = (180-θ1) / n+k; or θ V = (180-θ1) / n
[0052] Where, θ V θ1 is the included angle of the V-groove 21; n is the bending angle of the connecting area; k is the number of V-grooves 21; and k is the correction angle value determined according to the material of the connecting area, with a value range of 0°-7°.
[0053] The multiple V-grooves 21 are of the same size and are equally spaced, which makes the connecting area 2 nearly arc-shaped after bending, that is, the two side walls are nearly arc-shaped and smoothly transitioned, which further improves the aesthetics of the packaging box.
[0054] The included angle of the V-groove 21 calculated using the above formula can make the connecting area 2 bend infinitely close to a circular arc.
[0055] When using paper materials, the formula for calculating the included angle of the V-groove 21 is θ. V When =(180-θ1) / n+k, the reduction in surface accuracy caused by the raised fibers in the V-groove 21 can be avoided. Specifically, after the V-groove 21 is cut and shaped, there will be fiber bulges, and the connecting area 2 will generate a certain elastic force between the two inclined walls of the V-groove 21 after bending. If the two inclined walls of the V-groove 21 are tightly pressed together after bending, the presence of fiber bulges and elastic force will lead to a large stress in the connecting area 2, that is, the two inclined walls will exert a large force on each other, and the two inclined walls will tend to open. As a result, the actual bending angle of the connecting area 2 will be greater than θ. 1， The packaging box deformed. However, the existence of the k value can greatly prevent this from happening. That is, by increasing the angle of the V-groove 21, there is still a certain angle between the two inclined walls after bending, that is, there is a certain space to accommodate the fiber bulge and reduce the effect of the elastic force on the two inclined walls acting on each other. Then the stress in the connecting area 2 after bending will be greatly reduced, the bending shape of the connecting area 2 will be extremely stable, and the packaging box will hardly deform.
[0056] In some alternative embodiments, the material of the connecting area 2 includes at least one of adhesive material and paper material. When the connecting area 2 is made of paper material, k is 3-7°.
[0057] Various types of paper materials can be used as the materials for the flat structure of the embodiments of this application, such as kraft paper and cardboard of various thicknesses and strengths. During manufacturing, the V-groove 21 can also eliminate the pre-folding process, making it easier to bond and form.
[0058] After multiple simulations, experiments and analyses of paper materials, the inventors concluded that when the value of k is 3-7°, the bending shape of the connection area 2 is relatively stable under the condition that other parameters remain unchanged. That is, the stress will not be too large due to a small value, nor will the V-groove 21 be hollowed out too much and have low strength due to a large value, making it easy to deform.
[0059] Furthermore, when using paper materials, k is 5°. After multiple simulations, experiments, and analyses, the inventors concluded that when k is 5°, the bending shape of the connection area 2 is most stable under the condition that other parameters remain unchanged. That is, the stress will not be too high due to a small value, nor will the V-groove 21 be too hollowed out and have low strength due to a large value, making it easy to deform.
[0060] After numerous simulations, experiments, and analyses, the inventors concluded that when θ1 is 90°, k is 5°, and n is 9, θ V When the angle is 15°, the bending shape of the connecting area 2 is the most stable, the resulting arc shape is the most standard and beautiful, and the manufacturing difficulty is also lower.
[0061] In some alternative embodiments, when the connecting area is made of a gel material, the value of k is 1°-3°.
[0062] Plastic materials, including sheets such as PVC and PET, have a smaller k-value compared to paper materials because they have fewer fiber protrusions after cutting and shaping. Furthermore, the k-value is typically between 1° and 2°.
[0063] In some alternative embodiments, the connecting area 2 includes a first end 22 and a second end 23 respectively connected to two adjacent sidewall areas 1, and a plurality of V-grooves 21 are located between the first end 22 and the second end 23. The first end 22 has a first bend 24 facing the first side, which is used to form a first bend position between the connecting area 2 and one of the sidewall areas 1. The second end 23 has a second bend 25 facing the first side, which is used to form a second bend position between the connecting area 2 and the other sidewall area 1.
[0064] A first bend 24 and a second bend 25 are formed at the first end 22 and the second end 23 of the connecting area 2, respectively, so as to form a first bend position and a second bend position between the connecting area 2 and the two connected side wall areas 1. In this way, when the flat plate structure is bent, it can be bent according to the first bend position and the second bend position, which provides operation positioning for the bending of the connecting area 2, thereby improving production efficiency.
[0065] Furthermore, both the first curved portion 24 and the second curved portion 25 are groove structures.
[0066] After the connecting area 2 is bent, the first end 22 and the second end 23 are likely to form a certain angle with the straight side wall. Stress will be generated at the angle, resulting in wrinkles. Therefore, the first bent part 24 and the second bent part 25 are set as groove structures, which can eliminate most of the stress generated between the first end 22 and the second end 23 and the straight side wall, and reduce the wrinkles caused by bending, so that the first end 22 and the second end 23 can smoothly transition with the adjacent side wall, thereby improving the aesthetics.
[0067] In one alternative embodiment, the depth of the groove structure is less than the depth of the V-groove 21. This design ensures the structural strength of the first end 22 and the second end 23, while also simplifying the manufacturing process.
[0068] In one alternative embodiment, the groove structure is a U-shaped groove. Of course, other types of groove structures are also possible, such as a V-shaped groove.
[0069] In one optional embodiment, a plurality of V-grooves 21 are of the same size and equally spaced. Each V-groove 21 includes a first V-groove 26 adjacent to the first end 22 and a second V-groove 27 adjacent to the second end 23. The distance between the first curved portion 24 and the first V-groove 26, the distance between the second curved portion 25 and the second V-groove 27, and the distance between any two adjacent V-grooves 21 are all equal. It should be noted that the distance between the first curved portion 24 and the first V-groove 26 refers to the distance between the deepest point of the first curved portion 24 and the deepest point of the first V-groove 26. Similarly, the distance between the second curved portion 25 and the second V-groove 27 refers to the distance between the deepest point of the second curved portion 25 and the deepest point of the second V-groove 27.
[0070] The first curved portion 24, multiple V-shaped grooves 21, and the second curved portion 25 are equidistantly arranged along the direction of adjacent side wall areas 1. As a result, the connecting area 2 formed will present a more standard arc shape after bending, and the shape will be more beautiful.
[0071] Please continue to refer to Figure 1 In some alternative embodiments, the straight plate structure further includes a reinforcing layer 3, which is disposed on the side of the connecting area 2 away from the first side.
[0072] By providing a reinforcing layer 3 on the side of the connection area 2 away from the first side, the structural strength of the entire connection area 2 is improved. In this way, even after removing multiple V-grooves 21, the flat plate structure can still maintain its structural strength, and will not break during subsequent bending, and will also have durability during subsequent use.
[0073] Furthermore, the reinforcing layer 3 is at least one of a film layer or a coating. For example, it is a biaxially oriented polypropylene film.
[0074] In some alternative embodiments, the V-groove 21 extends in the same direction as the grain of the paperboard. This facilitates grooving and results in a smooth V-groove 21 that is less prone to damage.
[0075] Figure 3 This is a schematic diagram of a flat plate structure according to an embodiment of this application.
[0076] Please see Figure 3 In some alternative embodiments, the flat plate structure further includes a top plate area 6, which includes a first top plate area 61 and a second top plate area 62 connected to both sides of a plurality of side wall areas 1. The plurality of side wall areas 1 are used to enclose and form a through hole, and the first top plate area 61 and the second top plate area 62 are respectively used to cover the two openings of the through hole.
[0077] The first top panel area 61 and the second top panel area 62 each include a panel body area 63 and a plurality of insertable panel areas 64 that are flipped and connected to the outer periphery of the panel body area. The panel body area 63 is flipped and connected to one of the side wall areas 1. The insertable panel areas 64 are used to abut against the first side of the side wall area 1 when the packaging box is formed.
[0078] The first top plate area 61 and the second top plate area 62 can be connected to both sides of the same side wall area 1, or they can be connected to different side wall areas 1.
[0079] In an optional embodiment, the second top sheet area 62 further includes a mounting area, which includes a first mounting wall area 65 and a second mounting wall area 66 that are symmetrically arranged and bent and connected. One end of the first mounting wall area 65 is bent and connected to one of the side wall areas 1, and the opposite end is bent and connected to the side of the second mounting wall area 66 near the first mounting wall area 65. The opposite side of the second mounting wall area 66 is bent and connected to the sheet body 53.
[0080] In an optional embodiment, the first mounting wall area 65 and the second mounting wall area 66 are respectively provided with mounting holes 67, and the two mounting holes 67 can be aligned when the first mounting wall area 65 and the second mounting wall area 66 are attached. The mounting area and the mounting holes 67 are provided to hang the packaging box.
[0081] Figure 4 for Figure 3 The diagram shows the structure of the packaging box formed by the flat panel structure in its closed state. Figure 5 for Figure 3 The diagram shows the structure of the packaging box formed by the flat panel structure in the open state.
[0082] This application embodiment also provides a packaging box, including a box body 4 formed by the above-described flat plate structure enclosing the box.
[0083] Please see Figure 4 and Figure 5In some alternative embodiments, the packaging box includes a box body 4, the box body 4 includes a plurality of side walls 41, the plurality of side walls 41 are arranged along a first direction to form a through hole, and at least a pair of adjacent side walls 41 are connected by a curved connecting section 42, the curved connecting section 42 being bent by a connecting area 2.
[0084] The box body 4 also includes a hole-blocking assembly 5, which includes a first top piece 51 and a second top piece 52. The first top piece 51 and the second top piece 52 are respectively disposed on the two openings of the through hole to form a closed structure.
[0085] The first top piece 51 and the second top piece 52 each include a piece body 53 and a plurality of insert pieces 54 that are flipped and connected to the outer periphery of the piece body 53. The piece body 53 is flipped and connected to one of the side walls 41. The insert pieces 54 can extend into the through hole and abut against the side of the side wall 41 facing the through hole.
[0086] In an alternative embodiment, the box body 4 includes four side walls 41, and any two adjacent side walls 41 are connected by a curved connecting section 42.
[0087] In one alternative embodiment, the plate body 53 has the same shape and size as the through hole, the plate body 53 and the side wall 41 are bendable at the connection, and the plurality of plug-in plates 54 are bendable at the connection with the plate body 53.
[0088] In one alternative embodiment, the number of plug-in pieces 54 is three, the through holes are generally rectangular, and the three plug-in pieces 54 are respectively used to abut against the other three side walls 41 of the four side walls 41, excluding the side wall 41 to which the piece body 53 is connected.
[0089] When the sheet body 53 is rotated to the open position, multiple insert pieces 54 can be inserted into the through hole. Due to the toughness and elasticity of the cardboard, the bent insert pieces 54 can firmly abut against the side wall 41 facing the through hole, thereby opening up multiple side walls 41 while ensuring that the hole-blocking assembly 5 does not slip out of the through hole, thus playing a role in fixing the curved connecting section 42 and preventing it from naturally denting during use.
[0090] Figure 6 for Figure 5 The diagram shows the structure of the second top plate.
[0091] In an optional embodiment, the second top sheet 52 further includes a mounting portion 55, which includes a first mounting wall 56 and a second mounting wall 57 that are symmetrically arranged and bent and connected. The first end of the first mounting wall 56 is flipped and connected to one of the side walls 41, the second end opposite to the first end is flipped and connected to the third end of the second mounting wall 57, and the fourth end of the second mounting wall 57 opposite to the third end is flipped and connected to the sheet body 53.
[0092] In an optional embodiment, the first mounting wall 56 and the second mounting wall 57 are respectively provided with mounting holes 58, and the two mounting holes 58 can be aligned when the first mounting wall 56 and the second mounting wall 57 are attached. The mounting holes 58 are provided to hang packaging boxes.
[0093] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A flat plate structure, characterized in that, It includes multiple sidewall regions and connecting regions between adjacent sidewall regions; The surface of the connecting area facing the first side forms a plurality of V-shaped grooves spaced apart along the arrangement direction of the adjacent sidewall areas. The connecting area is used to allow the plurality of sidewall areas to enclose and form a box after bending. The plurality of V-grooves extend along the intersection of the sidewall area and the connecting area. The included angle of the V-grooves is set according to grooving influence parameters, which include at least one of the following: the bending angle of the connecting area, the material of the connecting area, and the number of V-grooves. The formula for calculating the included angle of the V-groove is as follows: i V =(180-θ1) / n+k Where, θ V θ1 is the included angle of the V-groove; n is the number of V-grooves; and k is a correction angle value determined according to the material of the connection area, with a value range of 0°-7°. The connection area includes a first end and a second end respectively connected to two adjacent sidewall areas, and the plurality of V-grooves are located between the first end and the second end; The first end face has a first curved portion formed on the first side, and the first curved portion is used to form a first curved position between the connecting area and one of the sidewall areas; The second end faces the first side and has a second curved portion formed thereon. The second curved portion is used to form a second curved position between the connecting area and the other sidewall area; wherein, both the first curved portion and the second curved portion are groove structures.
2. The flat plate structure according to claim 1, characterized in that, The multiple V-grooves are of the same size and are spaced at equal intervals.
3. The flat plate structure according to claim 2, characterized in that, The material of the connection area includes at least one of adhesive material and paper material; When the connecting area is made of paper material, k is 3-7°.
4. The flat plate structure according to claim 2, characterized in that, The V-groove includes a first V-groove adjacent to the first end and a second V-groove adjacent to the second end; The distance between the first curved portion and the first V-groove, the distance between the second curved portion and the second V-groove, and the distance between two adjacent V-grooves are all equal.
5. The flat plate structure according to claim 1, characterized in that, The depth of the groove structure is less than the depth of the V-shaped groove.
6. The flat plate structure according to claim 1, characterized in that, It also includes a reinforcing layer disposed on the side of the connection area away from the first side.
7. The flat plate structure according to claim 6, characterized in that, The reinforcing layer is at least one of a film or a coating.
8. A packaging box, characterized in that, Includes a box body formed by enclosing the flat plate structure as described in any one of claims 1-7.
9. The packaging box according to claim 8, characterized in that, The box body includes multiple side walls, which are arranged along a first direction to form a through hole. At least one pair of adjacent side walls are connected by a curved connecting section, which is formed by bending the connecting area. The housing also includes: The hole-plugging assembly includes a first top plate and a second top plate, which are respectively disposed on the two openings of the through hole to form a closed structure; The first top plate and the second top plate each include a plate body and a plurality of insert pieces that are flipped and connected to the outer periphery of the plate body. The plate body is flipped and connected to one of the side walls. The insert pieces can extend into the through hole and abut against the side of the side wall facing the through hole.