Packaging carton

Abstract

The utility model belongs to the technical field of packaging boxes, and particularly provides a packaging carton which comprises a bottom plate, a closed top plate, a side surrounding plate assembly, a first buffer plate and a second buffer plate, the side surrounding plate assembly is located between the bottom plate and the closed top plate, a containing cavity is defined by the side surrounding plate assembly, the bottom plate and the closed top plate, and the bottom plate extends out of the containing cavity; a first buffering part and a second buffering part are formed on the two opposite sides of the side surrounding plate assembly respectively, the two opposite sides of the first buffering plate are integrally connected with the side surrounding plate assembly and the first buffering part respectively, the first buffering plate and the first buffering part are folded, and the two opposite sides of the second buffering plate are integrally connected with the side surrounding plate assembly and the second buffering part respectively. And the second buffer plate and the second buffer part are folded. The bottom plate, the side coaming assembly, the first buffering plate and the second buffering plate which are integrally connected are obtained in a paper folding mode, the enough buffering effect can be provided, pearl wool or bubble bags do not need to be used, and the environment-friendly requirement is met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of packaging boxes, and particularly relates to a packaging paper box. BACKGROUND

[0002] When a product is packaged by using a packaging box, generally, pearl wool or a bubble bag is placed in the packaging box for buffering, so as to enhance the protection of the product. However, the large use of pearl wool or a bubble bag will cause adverse effects on the ecological environment, and therefore, a packaging box structure scheme capable of reducing the use of related buffering materials and providing sufficient buffering effect needs to be proposed. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a packaging paper box capable of reducing the use of related buffering materials such as pearl wool or a bubble bag and providing sufficient buffering effect.

[0004] To achieve the above-mentioned purpose, the application adopts the technical scheme of a packaging paper box comprising a bottom plate, a closed top plate, a side wall plate assembly, a first buffering plate and a second buffering plate. The side wall plate assembly is located between the bottom plate and the closed top plate, and the side wall plate assembly, the bottom plate and the closed top plate enclose a receiving cavity. The bottom plate extends out of the receiving cavity, and first and second buffering portions are respectively formed on opposite sides of the side wall plate assembly. The opposite sides of the first buffering plate are respectively integrally connected with the side wall plate assembly and the first buffering portion, and the first buffering plate is folded with the first buffering portion. The opposite sides of the second buffering plate are respectively integrally connected with the side wall plate assembly and the second buffering portion, and the second buffering plate is folded with the second buffering portion.

[0005] Further, the side wall plate assembly comprises a first vertical plate, a second vertical plate and two third vertical plates. The first vertical plate and the second vertical plate are parallel to each other, and the two third vertical plates are parallel to each other. The first vertical plate, the second vertical plate and the two third vertical plates cooperate to form a square frame. The first vertical plate is integrally connected with the first buffering plate, and the second vertical plate is integrally connected with the second buffering plate. One side of the third vertical plate extends out of the receiving cavity, and a third buffering portion is formed on the side of the first vertical plate away from the receiving cavity. The other side of the third vertical plate extends out of the receiving cavity, and a fourth buffering portion is formed on the side of the second vertical plate away from the receiving cavity.

[0006] The packaging paper box further comprises a first paper folding assembly and a second paper folding assembly. The first paper folding assembly is integrally connected to the first vertical plate and the third buffering portion, and the first paper folding assembly is folded with the third buffering portion. The second paper folding assembly is integrally connected to the second vertical plate and the fourth buffering portion, and the second paper folding assembly is folded with the fourth buffering portion.

[0007] Further, the first folding component comprises a third buffer plate and a first connecting plate, the third buffer plate has a first side, a second side and a third side connected in sequence, and the first connecting plate has a fourth side and a fifth side adjacent to each other; the first side is integrally connected with the third buffer part, the second side is integrally connected with the first buffer plate, the third side is integrally connected with the fourth side, the fifth side is integrally connected with the first vertical plate, the third buffer plate is folded away from the third buffer part, and the first connecting plate is folded on the side of the third buffer plate away from the third buffer part.

[0008] The second folding component comprises a fourth buffer plate and a second connecting plate, the fourth buffer plate has a sixth side, a seventh side and an eighth side connected in sequence, and the second connecting plate has a ninth side and a tenth side adjacent to each other; the sixth side is integrally connected with the fourth buffer part, the seventh side is integrally connected with the second buffer plate, the eighth side is integrally connected with the ninth side, and the tenth side is integrally connected with the second vertical plate; the fourth buffer plate is folded away from the fourth buffer part, and the second connecting plate is folded on the side of the fourth buffer plate away from the fourth buffer part.

[0009] Further, the number of the closed top plates is two, and the two closed top plates are integrally connected with the first vertical plate and the second vertical plate respectively.

[0010] The first connecting plate further has an eleventh side, and the fourth side, the fifth side and the eleventh side are connected in sequence; the first folding component further comprises a fifth buffer plate, adjacent two sides of the fifth buffer plate are integrally connected with the eleventh side and the top of one of the closed top plates respectively, and the fifth buffer plate is folded on the side of the first connecting plate away from the third buffer plate.

[0011] The second connecting plate further has a twelfth side, and the ninth side, the tenth side and the twelfth side are connected in sequence; the second folding component further comprises a sixth buffer plate, adjacent two sides of the sixth buffer plate are integrally connected with the twelfth side and the top of the other closed top plate respectively, and the sixth buffer plate is folded on the side of the second connecting plate away from the fourth buffer plate.

[0012] Further, the two third vertical plates are integrally connected with the opposite two sides of the bottom plate respectively.

[0013] Further, the packaging carton further comprises a top paperboard component, the top paperboard component is integrally connected to one of the third vertical plates, and the top paperboard component is folded on the top of the closed top plate.

[0014] Further, one side of the top paperboard component protrudes out of the closed top plate, forms a fifth buffer part on the side of the first vertical plate away from the accommodation cavity, the fifth buffer part, the first buffer part and the two third buffer parts cooperatively form a square frame, and the other side of the top paperboard component protrudes out of the closed top plate, forms a sixth buffer part on the side of the second vertical plate away from the accommodation cavity, and the sixth buffer part, the second buffer part and the two fourth buffer parts cooperatively form a square frame.

[0015] Further, the top paperboard assembly comprises a first paperboard, a second paperboard, a third paperboard and a fourth paperboard connected in sequence in one piece, and the first paperboard, the second paperboard, the third paperboard and the fourth paperboard enclose a square frame.

[0016] Further, the top paperboard assembly is provided with a plug-in joint, and the packaging carton further comprises a fixed top plate, the fixed top plate is connected in one piece with the top paperboard assembly at two third vertical plates respectively, the fixed top plate is arranged on the top of the top paperboard assembly, and the plug-in block is inserted into the plug-in joint.

[0017] Further, the side wall assembly is connected in one piece with the closed top plate.

[0018] Compared with the prior art, the packaging carton has the beneficial effects that the receiving cavity enclosed by the bottom plate, the closed top plate and the side wall assembly is used for receiving products to be packaged, when the packaging carton falls, the first buffer part and the second buffer part of the bottom plate located at opposite sides of the side wall assembly and the first buffer plate and the second buffer plate folded on the first buffer part and the second buffer part can play a buffering role, thereby protecting the four corners of the products in the receiving cavity. The bottom plate, the side wall assembly, the first buffer plate and the second buffer plate connected in one piece are obtained by folding, the double-layer paperboard structure composed of the first buffer plate and the first buffer part and the double-layer paperboard structure composed of the second buffer plate and the second buffer part can realize the buffering function, sufficient buffering effect can be provided without using pearl wool or bubble bags to meet the environmental protection requirement, and the packaging carton has the advantages of high structural stability, simple manufacturing, low manufacturing cost and high production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0020] Figure 1 The half-expansion structure of the packaging carton provided by the embodiments of the present application is shown Figure 1 ;

[0021] Figure 2 The structure of the packaging carton shown in another view is shown Figure 1 ;

[0022] Figure 3 The half-expansion structure of the packaging carton provided by the embodiments of the present application is shown Figure 2 ;

[0023] Figure 4A half-expanding structure of a packaging carton provided by the embodiment of the present application Figure 3 ;

[0024] Figure 5 A third buffer plate of a packaging carton Figure 4 ;

[0025] Figure 6 A first connecting plate of a packaging carton Figure 4 ;

[0026] Figure 7 A fully-expanding structure of a packaging carton provided by the embodiment of the present application

[0027] Figure 8 A fourth buffer plate of a packaging carton Figure 7 ;

[0028] Figure 9 A second connecting plate of a packaging carton Figure 7 ;

[0029] In the drawings, various reference signs represent:

[0030] 10, bottom plate; 11, first buffer part; 12, second buffer part;

[0031] 20, closed top plate;

[0032] 30, side wall assembly; 31, first vertical plate; 32, second vertical plate; 33, third vertical plate; 331, third buffer part; 332, fourth buffer part;

[0033] 40, first buffer plate;

[0034] 50, first folding assembly; 51, third buffer plate; 511, first side; 512, second side; 513, third side; 52, first connecting plate; 521, fourth side; 522, fifth side; 523, eleventh side; 53, fifth buffer plate;

[0035] 60, top paperboard assembly; 61, fifth buffer part; 62, first paperboard; 63, second paperboard; 64, third paperboard; 65, fourth paperboard; 66, sixth buffer part;

[0036] 70, fixed top plate; 71, insertion block;

[0037] 80, second buffer plate;

[0038] 90, second folding assembly; 91, fourth buffer plate; 911, sixth side; 912, seventh side; 913, eighth side; 92, second connecting plate; 921, ninth side; 922, tenth side; 923, twelfth side; 93, sixth buffer plate. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0040] In the description of the present application, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In combination Figure 1 , Figure 2 and Figure 3As shown, the packaging carton provided by the embodiment of the present application comprises a bottom plate 10, a closed top plate 20, a side wall plate assembly 30, a first buffer plate 40 and a second buffer plate 80. The side wall plate assembly 30 is located between the bottom plate 10 and the closed top plate 20 assembly, and the side wall plate assembly 30, the bottom plate 10 and the closed top plate 20 enclose a receiving cavity. The bottom plate 10 extends out of the receiving cavity, and a first buffer portion 11 and a second buffer portion 12 are respectively formed on opposite sides of the side wall plate assembly 30. The opposite sides of the first buffer plate 40 are integrally connected with the side wall plate assembly 30 and the first buffer portion 11, respectively. The first buffer plate 40 is folded with the first buffer portion 11. The opposite sides of the second buffer plate 80 are integrally connected with the side wall plate assembly 30 and the second buffer portion 12, respectively. The second buffer plate 80 is folded with the second buffer portion 12.

[0044] The receiving cavity enclosed by the bottom plate 10, the closed top plate 20 and the side wall plate assembly 30 is used to accommodate products that need to be packaged. When the packaging carton falls, the first buffer portion 11 and the second buffer portion 12 of the bottom plate 10 located on opposite sides of the side wall plate assembly 30, and the first buffer plate 40 and the second buffer plate 80 folded on the first buffer portion 11 and the second buffer portion 12, respectively, can play a buffering role, thereby protecting the four corners of the products in the receiving cavity. The bottom plate 10, the side wall plate assembly 30, the first buffer plate 40 and the second buffer plate 80 integrally connected by the folding method can provide sufficient buffering effect without using pearl wool or bubble bags to meet the environmental protection requirements, and have the advantages of high structural stability, simple manufacturing, low manufacturing cost and high production efficiency.

[0045] The structure of the packaging carton provided by the embodiment after being completely unfolded is shown in Figure 7 At this time, the bottom plate 10, the first buffer plate 40, the second buffer plate 80 and the side wall plate assembly 30 are all in the same plane. When manufacturing the packaging carton, the dashed line part is folded, the first buffer plate 40 is folded 180° to be folded above the first buffer portion 11 of the bottom plate 10, the second buffer plate 80 is folded 180° to be folded above the second buffer portion 12 of the bottom plate 10, and the side wall plate assembly 30 is folded to make the side wall plate assembly 30 perpendicular to the first buffer plate 40 and the second buffer plate 80.

[0046] In one embodiment, the side wall plate assembly 30 is integrally connected with the closed top plate 20. The bottom plate 10, the closed top plate 20, the side wall plate assembly 30, the first buffer plate 40 and the second buffer plate 80 integrally connected by the folding method not only can improve the structural stability of the packaging carton, but also have the advantages of simple manufacturing, low manufacturing cost and high production efficiency.

[0047] In one embodiment, the combination of Figure 1 and Figure 2 As shown in the drawings, the side wall assembly 30 includes a first vertical plate 31, a second vertical plate 32, and two third vertical plates 33, the first vertical plate 31 and the second vertical plate 32 are parallel to each other, the two third vertical plates 33 are parallel to each other, and the first vertical plate 31, the second vertical plate 32, and the two third vertical plates 33 cooperate to form a square frame; the first vertical plate 31 is integrally connected with the first buffer plate 40, and the second vertical plate 32 is integrally connected with the second buffer plate 80; one side of the third vertical plate 33 extends out of the storage cavity, and a third buffer portion 331 is formed on the side of the first vertical plate 31 away from the storage cavity, and the other side of the third vertical plate 33 extends out of the storage cavity, and a fourth buffer portion 332 is formed on the side of the second vertical plate 32 away from the storage cavity; the packaging carton further includes a first folding paper assembly 50 and a second folding paper assembly 90, the first folding paper assembly 50 is integrally connected to the first vertical plate 31 and the third buffer portion 331, and the first folding paper assembly 50 is folded with the third buffer portion 331, and the second folding paper assembly 90 is integrally connected to the second vertical plate 32 and the fourth buffer portion 332, and the second folding paper assembly 90 is folded with the fourth buffer portion 332.

[0048] It should be noted that the bottom plate 10 in the above embodiment extends out of the storage cavity and forms the first buffer portion 11 and the second buffer portion 12 on the opposite sides of the side wall assembly 30, and in this embodiment, specifically refers to that one side of the bottom plate 10 extends out of the storage cavity and forms the first buffer portion 11 on the side of the first vertical plate 31 away from the storage cavity, and the other side of the bottom plate 10 extends out of the storage cavity and forms the second buffer portion 12 on the side of the second vertical plate 32 away from the storage cavity.

[0049] In this embodiment, the number of the second vertical plate 32 is two, so that two third buffer portions 331 and two fourth buffer portions 332 can be formed in total, the two third buffer portions 331 correspond to two corners of the product in the storage cavity, and the two fourth buffer portions 332 correspond to the other two corners of the product in the storage cavity, so that when the packaging carton falls, the four corners of the product can be protected by the buffer. Moreover, when the packaging carton is placed horizontally, the third buffer portion 331 and the fourth buffer portion 332 can also block the impact from the horizontal direction from the outside, so as to avoid that the external objects pass through the first buffer plate 40 and directly impact the first vertical plate 31, and avoid that the external objects pass through the second buffer plate 80 and directly impact the second vertical plate 32, thereby achieving the protection of the product.

[0050] In addition, by arranging the first paper folding assembly 50, the first paper folding assembly 50 is integrally connected to the first vertical plate 31 and the third buffer portion 331, and the first paper folding assembly 50 is folded with the third buffer portion 331, the gap between the third vertical plate 33 and the first vertical plate 31 can be eliminated, not only the structural stability can be improved, but also the external dust and other sundries can be prevented from entering the storage cavity through the gap, and in addition, the overall appearance of the packaging carton can be improved. Similarly, by arranging the second paper folding assembly 90, the second paper folding assembly 90 is integrally connected to the second vertical plate 32 and the fourth buffer portion 332, and the second paper folding assembly 90 is folded with the fourth buffer portion 332, the gap between the third vertical plate 33 and the second vertical plate 32 can be eliminated, not only the structural stability can be improved, but also the external dust and other sundries can be prevented from entering the storage cavity through the gap, and in addition, the overall appearance of the packaging carton can be improved. By folding the first vertical plate 31, the second vertical plate 32, the third vertical plate 33, the first paper folding assembly 50 and the second paper folding assembly 90 integrally, the advantages of simple manufacturing, low manufacturing cost and high production efficiency are obtained.

[0051] Specifically, the number of the first paper folding assembly 50 is two, and the two third vertical plates 33 are connected to the opposite sides of the first vertical plate 31 through the two first paper folding assemblies 50 respectively. The number of the second paper folding assembly 90 is also two, and the two third vertical plates 33 are connected to the opposite sides of the second vertical plate 32 through the two second paper folding assemblies 90 respectively.

[0052] In one embodiment, the two third vertical plates 33 are integrally connected to the opposite sides of the bottom plate 10 respectively. By folding the bottom plate 10 and the two third vertical plates 33 integrally, not only the structural stability of the packaging carton can be improved, but also the advantages of simple manufacturing, low manufacturing cost and high production efficiency are obtained.

[0053] In one embodiment, in combination with Figure 3 , Figure 4 , Figure 5 and Figure 6 , the first paper folding assembly 50 includes a third buffer plate 51 and a first connecting plate 52. The third buffer plate 51 has a first side 511, a second side 512 and a third side 513 connected in sequence. The first connecting plate 52 has a fourth side 521 and a fifth side 522 adjacent to each other. The first side 511 is integrally connected to the third buffer portion 331, the second side 512 is integrally connected to the first buffer plate 40, the third side 513 is integrally connected to the fourth side 521, the fifth side 522 is integrally connected to the first vertical plate 31, the third buffer plate 51 is folded with the third buffer portion 331, and the first connecting plate 52 is folded on the side of the third buffer plate 51 away from the third buffer portion 331. In combination with Figure 3 , Figure 4 , Figure 7 , Figure 8 andFigure 9 As shown, the second paper folding assembly 90 comprises a fourth buffer plate 91 and a second connecting plate 92, the fourth buffer plate 91 has a sixth side 911, a seventh side 912 and an eighth side 913 connected in sequence, and the second connecting plate 92 has a ninth side 921 and a tenth side 922 adjacent to each other; the sixth side 911 is integrally connected with the fourth buffer part 332, the seventh side 912 is integrally connected with the second buffer plate 80, the eighth side 913 is integrally connected with the ninth side 921, and the tenth side 922 is integrally connected with the second vertical plate 32; the fourth buffer plate 91 is folded with the fourth buffer part 332, and the second connecting plate 92 is folded on the side of the fourth buffer plate 91 away from the fourth buffer part 332.

[0054] The third buffer plate 51 protrudes from the side of the first vertical plate 31 away from the storage cavity, and is folded with the third buffer part 331 to form a double-layer paper plate structure, which can enhance the buffering effect compared with a single-layer paper plate structure, thereby ensuring the safety of the products in the storage cavity. The third buffer plate 51 is integrally connected with the third buffer part 331, the first buffer plate 40 and the fourth side 521 of the first connecting plate 52 through the first side 511, the second side 512 and the third side 513, respectively, and the first connecting plate 52 is integrally connected with the first vertical plate 31 through the fifth side 522, so as to cancel the gap between the first vertical plate 31 and the third vertical plate 33 and the gap between the first vertical plate 31 and the first buffer plate 40, thereby improving the structural stability, sealing performance and aesthetic appearance. Each paper plate integrally connected by paper folding has the advantages of simple manufacturing, low manufacturing cost and high production efficiency. Similarly, the fourth buffer plate 91 protrudes from the side of the second vertical plate 32 away from the storage cavity, and is folded with the fourth buffer part 332 to form a double-layer paper plate structure, which can enhance the buffering effect compared with a single-layer paper plate structure, thereby ensuring the safety of the products in the storage cavity. The fourth buffer plate 91 is integrally connected with the fourth buffer part 332, the second buffer plate 80 and the ninth side 921 of the second connecting plate 92 through the sixth side 911, the seventh side 912 and the eighth side 913, respectively, and the second connecting plate 92 is integrally connected with the second vertical plate 32 through the tenth side 922, so as to cancel the gap between the second vertical plate 32 and the third vertical plate 33 and the gap between the second vertical plate 32 and the second buffer plate 80, thereby improving the structural stability, sealing performance and aesthetic appearance. Each paper plate integrally connected by paper folding has the advantages of simple manufacturing, low manufacturing cost and high production efficiency.

[0055] In one embodiment, in combination with Figure 3 , Figure 4 and Figure 6As shown in the figure, the number of the closed top plate 20 is two, and the two closed top plates 20 are integrally connected with the first vertical plate 31 and the second vertical plate 32 respectively; the first connecting plate 52 further has an eleventh side 523, and the fourth side 521, the fifth side 522 and the eleventh side 523 are connected in sequence; the first paper folding assembly 50 further comprises a fifth buffer plate 53, and the adjacent two sides of the fifth buffer plate 53 are integrally connected with the eleventh side 523 and the top of one of the closed top plates 20 respectively, and the fifth buffer plate 53 is folded on the side of the first connecting plate 52 away from the third buffer plate 51; as shown in Figure 3 、 Figure 4 、 Figure 7 and Figure 9 As shown in the figure, the second connecting plate 92 further has a twelfth side 923, and the ninth side 921, the tenth side 922 and the twelfth side 923 are connected in sequence; the second paper folding assembly 90 further comprises a sixth buffer plate 93, and the adjacent two sides of the sixth buffer plate 93 are integrally connected with the twelfth side 923 and the top of the other closed top plate 20 respectively, and the sixth buffer plate 93 is folded on the side of the second connecting plate 92 away from the fourth buffer plate 91.

[0056] By arranging the fifth buffer plate 53, the fifth buffer plate 53 is integrally connected to the top of the closed top plate 20, which can effectively buffer the impact from the outside above, and avoid crushing the products in the storage cavity, and the fifth buffer plate 53 is also integrally connected to the eleventh side 523 of the first connecting plate 52 and folded on the side of the first connecting plate 52 away from the third buffer plate 51, which can further improve the structural stability, sealing performance and aesthetic appearance. Similarly, by arranging the sixth buffer plate 93, the sixth buffer plate 93 is integrally connected to the top of the closed top plate 20, which can effectively buffer the impact from the outside above, and avoid crushing the products in the storage cavity, and the sixth buffer plate 93 is also integrally connected to the twelfth side 923 of the second connecting plate 92 and folded on the side of the second connecting plate 92 away from the fourth buffer plate 91, which can further improve the structural stability, sealing performance and aesthetic appearance. By folding the paper in a paper folding manner, the various paper plates integrally connected have the advantages of simple manufacturing, low manufacturing cost and high production efficiency.

[0057] In one embodiment, as shown in Figure 1 and Figure 3 The packaging carton further comprises a top paper plate assembly 60, and the top paper plate assembly 60 is integrally connected to one of the third vertical plates 33 and folded on the top of the closed top plate 20. By folding the third vertical plate 33 and the top paper plate assembly 60 in a paper folding manner, the top paper plate assembly 60 is folded on the top of the closed top plate 20, and the buffering function is realized by the top paper plate assembly 60 to avoid crushing the products in the storage cavity, which not only does not need to use pearl wool or bubble bag to meet the environmental protection requirements, but also has the advantages of high structural stability, simple manufacturing, low manufacturing cost and high production efficiency.

[0058] In one embodiment, combined Figure 1 、 Figure 2 and Figure 3 As shown, one side of the top cardboard assembly 60 protrudes out of the closed top plate 20, and a fifth buffer portion 61 is formed on the side of the first vertical plate 31 facing away from the storage cavity. The fifth buffer portion 61, the first buffer portion 11 and the two third buffer portions 331 cooperate to form a square frame. The other side of the top cardboard assembly 60 protrudes out of the closed top plate 20, and a sixth buffer portion 66 is formed on the side of the second vertical plate 32 facing away from the storage cavity. The sixth buffer portion 66, the second buffer portion 12 and the two fourth buffer portions 332 cooperate to form a square frame.

[0059] By forming the fifth buffer portion 61 and the sixth buffer portion 66 on the top cardboard component 60, the fifth buffer portion 61, the first buffer portion 11 and the two third buffer portions 331 cooperate to form a square frame, and the sixth buffer portion 66, the second buffer portion 12 and the two fourth buffer portions 332 cooperate to form a square frame, thereby achieving comprehensive protection of the four corners of the product in the storage cavity.

[0060] In one embodiment, Figure 4 As shown, the top cardboard assembly 60 includes a first cardboard 62, a second cardboard 63, a third cardboard 64, and a fourth cardboard 65, which are connected in sequence as a whole. The first cardboard 62, the second cardboard 63, the third cardboard 64, and the fourth cardboard 65 enclose a square frame. The first cardboard 62, the second cardboard 63, the third cardboard 64, and the fourth cardboard 65 enclose the square frame, thereby forming a hollow space inside the square frame. This hollow space can effectively buffer external impacts from above, thereby preventing the products in the storage cavity from being compressed. Specifically, the first cardboard 62 and the third cardboard 64 are parallel and opposite each other. The third cardboard 64 is stacked on the closed top plate 20, and the first cardboard 62 is located above the third cardboard 64. The first cardboard 62 is integrally connected to the second vertical plate 32, and the second cardboard 63 and the fourth cardboard 65 are parallel and opposite each other.

[0061] Specifically, both ends of the square frame enclosed by the first paperboard 62 , the second paperboard 63 , the third paperboard 64 and the fourth paperboard 65 protrude out of the closed top plate 20 to form the fifth buffer portion 61 and the sixth buffer portion 66 , respectively.

[0062] Specifically, a crack can be opened on the first paperboard 62, a small piece can be cut out of the fourth paperboard 65, and the small piece can be inserted into the crack, thereby achieving fixation of the first paperboard 62 and the fourth paperboard 65.

[0063] In one embodiment, combined Figure 1 and Figure 3As shown, the top paperboard assembly 60 is provided with a plug-in slot (not shown), and the packaging carton further comprises a fixed top plate 70 integrally connected with the top paperboard assembly 60 at two third vertical plates 33 respectively, the fixed top plate 70 is provided with a plug-in block 71, and the fixed top plate 70 is stacked on the top of the top paperboard assembly 60, and the plug-in block 71 is inserted into the plug-in slot. By inserting the plug-in block 71 of the fixed top plate 70 into the plug-in slot of the top paperboard assembly 60, the fixed top plate 70 and the top paperboard assembly 60 are fixed, so as to maintain the final shape of the entire packaging carton.

[0064] Specifically, the plug-in slot is arranged in the first paperboard 62 in the top paperboard assembly 60, the fixed top plate 70 is folded on the first paperboard 62, and the fixed top plate 70 overlaps the first paperboard 62, and the part of the fixed top plate 70 protruding out of the closed top plate 20 also plays a buffering role to protect the four corners of the product in the receiving cavity.

[0065] The structure of the packaging carton provided by the embodiment after being completely unfolded is shown in Figure 7 As shown, the bottom plate 10, the first buffer plate 40, the second buffer plate 80, the first vertical plate 31, the second vertical plate 32, the third vertical plate 33, the third buffer plate 51, the fourth buffer plate 91, the first connecting plate 52, the second connecting plate 92, the fifth buffer plate 53, the sixth buffer plate 93, the closed top plate 20, the first paperboard 62, the second paperboard 63, the third paperboard 64, the fourth paperboard 65 and the fixed top plate 70 are all in the same plane. The manufacturing of the packaging carton comprises the following steps:

[0066] I. Manufacturing the top paperboard assembly 60. Specifically, first fold the fourth paperboard 65 to be perpendicular to the third paperboard 64, then fold the third paperboard 64 to be perpendicular to the second paperboard 63, and then fold the second paperboard 63 to be perpendicular to the first paperboard 62, so as to obtain the top paperboard assembly 60 in a square frame structure, in addition, a slit can be opened on the first paperboard 62, and a small piece is cut out on the fourth paperboard 65, and the small piece is inserted into the slit, so as to fix the first paperboard 62 and the fourth paperboard 65.

[0067] II. Forming the receiving cavity. Specifically, fold the first upright plate 31, the first buffer plate 40, the second upright plate 32, the second buffer plate 80, the third buffer plate 51, the first connecting plate 52, the fifth buffer plate 53, the fourth buffer plate 91, the second connecting plate 92, the sixth buffer plate 93, the two third upright plates 33, and the two closing top plates 20, so that one of the closing top plates 20 is perpendicular to the first upright plate 31, the first upright plate 31 is perpendicular to the first buffer plate 40, the first buffer plate 40 is folded with the first buffer part 11 of the bottom plate 10, the two third upright plates 33 are perpendicular to the bottom plate 10, the third buffer plate 51 is folded with the third buffer part 331 of the third upright plate 33, the first connecting plate 52 is folded with the third buffer plate 51, the fifth buffer plate 53 is folded with the first connecting plate 52, and meanwhile, the other closing top plate 20 is perpendicular to the second upright plate 32, the second upright plate 32 is perpendicular to the second buffer plate 80, the second buffer plate 80 is folded with the second buffer part 12 of the bottom plate 10, the fourth buffer plate 91 is folded with the fourth buffer part 332 of the third upright plate 33, the second connecting plate 92 is folded with the fourth buffer plate 91, and the sixth buffer plate 93 is folded with the second connecting plate 92.

[0068] III. Folding the top paperboard assembly 60, so that the top paperboard assembly 60 is folded on top of the closing top plate 20.

[0069] IV. Folding the fixing top plate 70, so that the fixing top plate 70 is folded on top of the top paperboard assembly 60, and the insertion block 71 of the fixing top plate 70 is inserted into the insertion slot of the top paperboard assembly 60, thereby realizing the fixation of the fixing top plate 70 and the top paperboard assembly 60, so as to maintain the final form of the entire packaging carton.

[0070] It should be noted that the above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A carton of packaging characterised in that, The package paper box comprises a bottom plate (10), a closed top plate (20), a side plate assembly (30), a first buffer plate (40) and a second buffer plate (80), the side plate assembly (30) is located between the bottom plate (10) and the closed top plate (20), and the side plate assembly (30), the bottom plate (10) and the closed top plate (20) enclose a receiving cavity, the bottom plate (10) extends out of the receiving cavity, and a first buffer part (11) and a second buffer part (12) are respectively formed on opposite sides of the side plate assembly (30), the opposite sides of the first buffer plate (40) are integrally connected with the side plate assembly (30) and the first buffer part (11) respectively, the first buffer plate (40) is folded with the first buffer part (11), and the opposite sides of the second buffer plate (80) are integrally connected with the side plate assembly (30) and the second buffer part (12) respectively, and the second buffer plate (80) is folded with the second buffer part (12).

2. The packaging carton of claim 1, wherein: The side plate assembly (30) comprises a first vertical plate (31), a second vertical plate (32) and two third vertical plates (33), the first vertical plate (31) and the second vertical plate (32) are parallel to each other, the two third vertical plates (33) are parallel to each other, the first vertical plate (31), the second vertical plate (32) and the two third vertical plates (33) cooperate to form a square frame; the first vertical plate (31) is integrally connected with the first buffer plate (40), the second vertical plate (32) is integrally connected with the second buffer plate (80); one side of the third vertical plate (33) extends out of the receiving cavity, and a third buffer part (331) is formed on the side of the first vertical plate (31) away from the receiving cavity, and the other side of the third vertical plate (33) extends out of the receiving cavity, and a fourth buffer part (332) is formed on the side of the second vertical plate (32) away from the receiving cavity. The package paper box further comprises a first folding paper assembly (50) and a second folding paper assembly (90), the first folding paper assembly (50) is integrally connected with the first vertical plate (31) and the third buffer part (331), the first folding paper assembly (50) is folded with the third buffer part (331), and the second folding paper assembly (90) is integrally connected with the second vertical plate (32) and the fourth buffer part (332), and the second folding paper assembly (90) is folded with the fourth buffer part (332).

3. The packaging carton of claim 2, wherein: The first paper folding assembly (50) comprises a third buffer plate (51) and a first connecting plate (52), the third buffer plate (51) has a first side (511), a second side (512) and a third side (513) connected in sequence, and the first connecting plate (52) has a fourth side (521) and a fifth side (522) adjacent to each other; the first side (511) is integrally connected with the third buffer part (331), the second side (512) is integrally connected with the first buffer plate (40), the third side (513) is integrally connected with the fourth side (521), the fifth side (522) is integrally connected with the first vertical plate (31), the third buffer plate (51) is folded with the third buffer part (331), and the first connecting plate (52) is folded on the side of the third buffer plate (51) away from the third buffer part (331); The second paper folding assembly (90) comprises a fourth buffer plate (91) and a second connecting plate (92), the fourth buffer plate (91) has a sixth side (911), a seventh side (912) and an eighth side (913) connected in sequence, and the second connecting plate (92) has a ninth side (921) and a tenth side (922) adjacent to each other; the sixth side (911) is integrally connected with the fourth buffer part (332), the seventh side (912) is integrally connected with the second buffer plate (80), the eighth side (913) is integrally connected with the ninth side (921), and the tenth side (922) is integrally connected with the second vertical plate (32); the fourth buffer plate (91) is folded with the fourth buffer part (332), and the second connecting plate (92) is folded on the side of the fourth buffer plate (91) away from the fourth buffer part (332).

4. The packaging carton of claim 3, wherein: The number of the closed top plates (20) is two, and the two closed top plates (20) are integrally connected with the first vertical plate (31) and the second vertical plate (32) respectively; The first connecting plate (52) further has an eleventh side (523), and the fourth side (521), the fifth side (522) and the eleventh side (523) are connected in sequence; the first paper folding assembly (50) further comprises a fifth buffer plate (53), two adjacent sides of the fifth buffer plate (53) are integrally connected with the eleventh side (523) and the top of one of the closed top plates (20) respectively, and the fifth buffer plate (53) is folded on the side of the first connecting plate (52) away from the third buffer plate (51); The second connecting plate (92) further has a twelfth side (923), and the ninth side (921), the tenth side (922) and the twelfth side (923) are sequentially connected; the second folding paper assembly (90) further comprises a sixth buffer plate (93), two adjacent sides of the sixth buffer plate (93) are integrally connected with the twelfth side (923) and the top of another closed top plate (20) respectively, and the sixth buffer plate (93) is folded on the side of the second connecting plate (92) away from the fourth buffer plate (91).

5. The packaging carton of claim 2, wherein: Two third vertical plates (33) are integrally connected with opposite sides of the bottom plate (10) respectively.

6. The packaging carton of claim 2, wherein: The packaging carton further comprises a top paperboard assembly (60), the top paperboard assembly (60) is integrally connected to one of the third vertical plates (33), and the top paperboard assembly (60) is folded on the top of the closed top plate (20).

7. The packaging carton of claim 6, wherein: One side of the top paperboard assembly (60) protrudes out of the closed top plate (20) and forms a fifth buffer portion (61) on the side of the first vertical plate (31) away from the receiving cavity, the fifth buffer portion (61), the first buffer portion (11) and two third buffer portions (331) cooperatively form a square frame, and the other side of the top paperboard assembly (60) protrudes out of the closed top plate (20) and forms a sixth buffer portion (66) on the side of the second vertical plate (32) away from the receiving cavity, the sixth buffer portion (66), the second buffer portion (12) and two fourth buffer portions (332) cooperatively form a square frame.

8. The packaging carton of claim 6, wherein: The top paperboard assembly (60) comprises a first paperboard (62), a second paperboard (63), a third paperboard (64) and a fourth paperboard (65) which are integrally and sequentially connected, and the first paperboard (62), the second paperboard (63), the third paperboard (64) and the fourth paperboard (65) form a square frame.

9. The packaging carton according to claim 6, characterized in that: The top paperboard assembly (60) is provided with a plug-in seam, and the packaging carton further comprises a fixed top plate (70), the fixed top plate (70) is integrally connected with the top paperboard assembly (60) on two third vertical plates (33) respectively, the fixed top plate (70) is provided with a plug-in block (71), the fixed top plate (70) is folded on the top of the top paperboard assembly (60), and the plug-in block (71) is inserted into the plug-in seam.

10. The packaging carton of claim 1, wherein: The side wall assembly (30) is integrally connected with the closed top plate (20).

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