Packaging box
By forming the box body, lid, and filling compartments from the same substrate in one integral bending process, the problem of excessive material consumption in product packaging is solved, achieving the effects of cost reduction and efficiency improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SUNWODA ELECTRONIC CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-06-12
Smart Images
Figure CN224349310U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging technology, and in particular to a packaging box. Background Technology
[0002] To prevent damage during transportation, items need to be placed in packaging boxes for protection. For example, when transporting items such as batteries or tablets, the batteries or tablets are first placed in a packaging box, and then the box is sealed to protect the items and prevent damage.
[0003] In related technologies, to avoid the items affecting the sealing of the packaging box, the height of the items inside the packaging box is usually less than the height of the packaging box. That is, there is a gap between the top of the items and the lid of the packaging box. To avoid the risk of the items shaking inside the packaging box during transportation, foam plastic or pearl cotton is separately filled between the lid of the packaging box and the top of the items to avoid the risk of the items shaking during transportation.
[0004] However, when packaging items, not only do you need to buy packaging boxes, but you also need to buy foam plastic or pearl cotton for filling separately, which increases the amount of materials consumed in packaging items and makes the packaging cost of items higher. Utility Model Content
[0005] This utility model discloses a packaging box to solve the problem of high packaging costs for goods.
[0006] To solve the above problems, the present invention adopts the following technical solution:
[0007] A packaging box, comprising:
[0008] The box body has a receiving groove for receiving items to be packaged;
[0009] A cover body, which is connected to the main body of the box, is used to seal the opening of the receiving groove;
[0010] A filling partition is disposed on one of the box body and the lid, the filling partition being used to fill the gap between the lid and the item contained in the receiving groove;
[0011] The main body of the box, the cover, and the filling layer are formed by integrally bending the same substrate.
[0012] Optionally, the filling layer includes a plurality of sequentially connected folded plate segments, with a pre-bending line between any two adjacent folded plate segments, and any two adjacent folded plate segments can be bent relative to each other along the pre-bending line. The plurality of folded plate segments can be bent along different pre-bending lines to adjust the height of the filling layer.
[0013] Optionally, the filling layer includes a first folding plate, a second folding plate, a third folding plate, and a fourth folding plate connected in sequence. The side of the first folding plate opposite to the second folding plate is connected to the main body of the box. The first folding plate is located on the side of the cover facing the receiving groove. The first folding plate is bent relative to the main body of the box to form a first angle. The second folding plate is bent relative to the first folding plate to form a second angle. The third folding plate is bent relative to the second folding plate to form a third angle. The fourth folding plate is bent relative to the third folding plate to form a fourth angle. The side of the fourth folding plate opposite to the third folding plate abuts against the first folding plate.
[0014] Optionally, the first included angle, the second included angle, the third included angle, and the fourth included angle are all 90°.
[0015] Optionally, the first folding plate has an insertion hole, and the fourth folding plate has an insertion piece on the side facing the first folding plate, the insertion piece being inserted into the insertion hole.
[0016] Optionally, the number of the filling layers is at least two, and the at least two filling layers are spaced apart.
[0017] Optionally, at least two of the filling partitions are a first filling partition and a second filling partition, and the first filling partition and the second filling partition are respectively connected to two opposite side walls of the box body.
[0018] Optionally, the groove edge of the receiving groove of the box body has a first side, a second side, a third side, and a fourth side that are connected end to end in the circumferential direction. The first side and the third side are arranged opposite to each other along a first direction of the box body, and the second side and the fourth side are arranged opposite to each other along a second direction of the box body; wherein the first direction and the second direction intersect.
[0019] The first filling layer is connected to the first side, the second filling layer is connected to the third side, and the cover is connected to one of the second side and the fourth side.
[0020] Optionally, the cover includes a first cover plate and a second cover plate, the first cover plate being connected to the second side and the second cover plate being connected to the fourth side.
[0021] Optionally, the substrate includes a first plate, a second plate, a third plate, a fourth plate, a fifth plate, a sixth plate, a seventh plate, an eighth plate, a ninth plate, a tenth plate, an eleventh plate, and a twelfth plate.
[0022] The first plate, the second plate, the third plate, and the fourth plate are joined end to end to form the sidewall of the main body of the box;
[0023] The fifth plate is connected to the first plate and bent relative to the first plate; the sixth plate is connected to the second plate and bent relative to the second plate; the seventh plate is connected to the third plate and bent relative to the third plate; the eighth plate is connected to the fourth plate and bent relative to the fourth plate; the fifth plate, the sixth plate, the seventh plate, and the eighth plate form the bottom wall of the box body;
[0024] The ninth plate is connected to the first plate on the side opposite to the fifth plate and is bent relative to the first plate; the ninth plate is the first cover plate. The tenth plate is connected to the second plate on the side opposite to the sixth plate; the tenth plate forms the first filling layer. The eleventh plate is connected to the third plate on the side opposite to the seventh plate; the eleventh plate is the second cover plate. The twelfth plate is connected to the fourth plate on the side opposite to the eighth plate; the twelfth plate forms the first filling layer.
[0025] The technical solution adopted in this utility model can achieve the following beneficial effects:
[0026] In the packaging box disclosed in this utility model, the box body, lid, and filling partition are integrally formed by bending the same substrate. The filling partition is disposed on one of the box body and the lid, and is used to fill the gap between the lid and the items contained in the receiving groove. At this time, the filling partition can fill the space between the items and the lid, thereby preventing the items from shaking inside the packaging box. In this solution, the packaging box has a filling partition formed by integral bending, so there is no need for foam plastic or pearl cotton for filling, thus reducing the amount of materials consumed in packaging the items, thereby effectively reducing the packaging cost of the items. Attached Figure Description
[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0028] Figure 1 This is a schematic diagram of the structure of the packaging box disclosed in an embodiment of this utility model;
[0029] Figure 2 This is a cross-sectional view of the packaging box disclosed in an embodiment of this utility model;
[0030] Figure 3 This is an unfolded view of the packaging box disclosed in an embodiment of this utility model.
[0031] Explanation of reference numerals in the attached figures:
[0032] 100 - Packaging box, 110 - Box body, 111 - Receiving groove, 1111 - First side, 1112 - Second side, 1113 - Third side, 1114 - Fourth side, 120 - Lid, 121 - First cover plate, 122 - Second cover plate, 130 - Filling layer, 1301 - Folding section, 130a - First filling layer, 130b - Second filling layer, 131 - First folding plate, 132 - Second folding plate 133 - Third fold plate, 134 - Fourth fold plate, 200 - Item, 300 - Plate body, 301 - First plate body, 302 - Second plate body, 303 - Third plate body, 304 - Fourth plate body, 305 - Fifth plate body, 306 - Sixth plate body, 307 - Seventh plate body, 308 - Eighth plate body, 309 - Ninth plate body, 3010 - Tenth plate body, 3011 - Eleventh plate body, 3012 - Twelfth plate body, A - Pre-bending line. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0034] The technical solutions disclosed in the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0035] like Figures 1 to 3 As shown in the figure, this utility model embodiment discloses a packaging box 100, which includes a box body 110, a lid 120 and a filling layer 130.
[0036] The box body 110 is the main structure of the packaging box 100, and is mainly used to hold the items 200 to be packaged. Specifically, the box body 110 has a receiving groove 111, which is used to hold the items 200 to be packaged.
[0037] The lid 120 is connected to the box body 110 and is used to seal the opening of the receiving groove 111. Here, the lid 120 serves to seal the packaging box 100. In the specific packaging process, the item 200 is first placed into the receiving groove 111, and then the lid 120 seals it.
[0038] A filling partition 130 is disposed on one of the box body 110 and the lid 120. The filling partition 130 is used to fill the gap between the lid 120 and the item 200 contained in the receiving groove 111. At this time, the filling partition 130 fills the space between the item 200 and the lid 120, mainly filling the gap in the height direction of the gap between the lid 120 and the item 200 contained in the receiving groove 111; the length and width do not need to be completely filled. The gap between the lid 120 and the item 200 contained in the receiving groove 111 can be understood as the gap between the top of the item 200 and the lid 120. Here, the item 200 refers to all objects placed in the receiving groove 111, including structures such as trays used to support products. At this time, the filling partition 130 fills the space between the item 200 and the lid 120, thereby avoiding the risk of the item 200 shifting within the packaging box 100.
[0039] In the embodiments disclosed in this application, the box body 110, the lid 120, and the filling partition 130 are integrally formed by bending the same substrate 300. In this case, the packaging box 100 is integrally folded from a single substrate 300; that is, the box body 110, lid 120, and filling partition 130 are folded from different regions of the same substrate 300. The connection between the lid 120 and the box body 110 can be understood as the plate used to fold into the lid 120 being connected to the plate used to fold into the box body 110. Similarly, the plate used to fold into the filling partition 130 can be connected to either the plate used to fold into the lid 120 or the plate used to fold into the box body 110.
[0040] In the embodiments disclosed in this application, the packaging box 100 has an integrally bent filling layer 130, so there is no need for foam plastic or pearl cotton for filling, thus reducing the amount of materials consumed in packaging the article 200 and effectively reducing the packaging cost of the article 200.
[0041] Furthermore, when packaging goods using the packaging box 100 disclosed in this application, the filling layer can be directly folded into the receiving groove 111, eliminating the need for operators to handle foam plastic or pearl cotton, thus improving the packaging efficiency of the article 200. Simultaneously, since the filling partition 130 is formed by folding a portion of the substrate 300, there is no need to separately purchase, transport, and store the filling partition 130, effectively simplifying the packaging process of the article 200.
[0042] The substrate 300 in this application can be made of cardboard. In related technologies, the packaging box 100 uses a significant amount of foam plastic or pearl cotton. Since foam plastic and pearl cotton cause considerable environmental pollution, the packaging of the items 200 in these related technologies is not very environmentally friendly. In contrast, the packaging box 100 in this application is formed by bending cardboard, making it easy to recycle, providing better cushioning performance, and causing less environmental pollution.
[0043] Furthermore, the material of the substrate 300 in this application is not limited to cardboard, but can also be a foldable plastic board, or of course other materials, which are not limited herein.
[0044] In one embodiment, the filling layer 130 may include a plurality of sequentially connected folded plate segments 1301. A pre-bending line A is provided between any two adjacent folded plate segments 1301, and any two adjacent folded plate segments 1301 can be bent relative to each other along the pre-bending line A. In this case, the pre-bending line A is provided on the plate body of the substrate 300 used for folding to form the filling layer 130, dividing the plate body into multiple folded plate segments 1301. By folding two adjacent folded plate segments 1301 along the pre-bending line A, the filling layer 130 can be formed. In this embodiment, providing the pre-bending line A can improve the folding efficiency of the filling layer 130, thereby improving the packaging efficiency of the article 200. Furthermore, bending along the pre-bending line A can improve the bending accuracy, allowing the filling layer 130 to be filled more precisely between the article 200 and the cover 120.
[0045] Due to different transportation routes, the weight of the items 200 that a single packaging box 100 can carry varies, resulting in different heights of the items 200 inside the packaging box 100. For example, when goods are transported by land, a single packaging box 100 can carry a larger weight of items 200, thus requiring more items 200 to be packed inside, resulting in a smaller gap between the items 200 and the lid 120. Conversely, when the same packaging box 100 is used for air transport, a single packaging box 100 can carry a smaller weight of items 200, resulting in fewer items 200 to be packed inside, resulting in a larger gap between the items 200 and the lid 120. Therefore, packaging boxes 100 used for land transport and packaging boxes 100 used for air transport are not interchangeable.
[0046] Based on this, in another optional embodiment, multiple folded plate segments 1301 can be bent along different pre-bending lines A to adjust the height of the filling layer 130. In this case, in the height direction of the filling layer 130, the more parallel, unbent folded plate segments 1301 there are, the higher the height of the filling layer 130; conversely, the fewer parallel, unbent folded plate segments 1301 there are, the lower the height of the filling layer 130. Therefore, by selecting an appropriate pre-bending line A for bending, multiple unbent folded plate segments 1301 can form different splicing sizes, thereby obtaining filling layers 130 of different heights. For example, during land transportation, the height of the filling layer 130 can be stacked to a smaller value to meet the needs of the land transportation packaging box 100. During air transportation, the height of the filling layer 130 can be stacked to a larger value to meet the needs of the air transportation packaging box 100. Therefore, the packaging box 100 can be used for both air and land transportation, thus giving the packaging box 100 good versatility.
[0047] In this design, a pre-bending line A is designed on the substrate 300 used to form the filling layer 130, so that the height of the filling layer 130 can be adjusted according to the thickness of the contents to accommodate items of different sizes and thicknesses.
[0048] In another alternative embodiment, the filling layer 130 may include a first folding plate 131, a second folding plate 132, a third folding plate 133, and a fourth folding plate 134 that are sequentially connected and bent relative to each other. The side of the first folding plate 131 facing away from the second folding plate 132 may be connected to one of the box bodies 110. The first folding plate 131 is located on the side of the cover 120 facing the receiving groove 111. The first folding plate 131 is bent relative to the box body 110 to form a first included angle, such as... Figure 2 As shown in b1. The second folding plate 132 is bent relative to the first folding plate 131 to form a second included angle, as shown in Figure 1. Figure 2 As shown in b2. The third fold plate 133 is bent relative to the second fold plate 132 to form a third included angle, as shown in... Figure 2 As shown in b3. The fourth fold plate 134 is bent relative to the third fold plate 133 to form a fourth included angle, as shown in... Figure 2 As shown in b4.
[0049] The side of the fourth fold plate 134 facing away from the third fold plate 133 abuts against the first fold plate 131. Since one end of the fourth fold plate 134 needs to rest against the first fold plate 131, the first fold plate 131, the second fold plate 132, the third fold plate 133, and the fourth fold plate 134 form a cylindrical structure. Specifically, the second fold plate 132 is bent relative to the first fold plate 131 towards the direction of the receiving groove 111. The third fold plate 133 is bent relative to the second fold plate 132 towards the connection point between the box body 110 and the first fold plate 131, and the fourth fold plate 134 is bent relative to the third fold plate 133 towards the first fold plate 131, so that the end of the fourth fold plate 134 facing away from the third fold plate 133 can abut against the first fold plate 131.
[0050] In this design, the filling layer 130 is formed into a cylindrical structure, which has good support performance, thereby further enhancing the load-bearing capacity and durability of the filling layer 130, thus making the packaging box 100 have higher reliability and safety performance.
[0051] In the above scheme, the first folding plate 131 can be arranged opposite to the third folding plate 133, and the second folding plate 132 can be arranged opposite to the fourth folding plate 134. At this time, the filling layer 130 forms a U-shaped structure, thus further improving the load-bearing capacity and durability of the filling layer 130.
[0052] Furthermore, the first, second, third, and fourth included angles can all be 90°. In this case, the first folding plate 131 can be perpendicular to both the second folding plate 132 and the fourth folding plate 134, and the third folding plate 133 can be perpendicular to both the second folding plate 132 and the fourth folding plate 134. In this design, the filling layer 130 is a right quadrangular prism structure, thus further improving the rigidity of the filling layer 130 and further enhancing the reliability and safety of the packaging box 100.
[0053] In another alternative design, the first folding plate 131 may have an insertion hole, and the fourth folding plate 134 may have an insertion piece on the side facing the first folding plate 131, which can be inserted into the insertion hole. In this design, the insertion piece is inserted into the insertion hole, thereby avoiding the risk of the filling layer 130 accidentally detaching, and further improving the reliability and safety of the packaging box 100.
[0054] Of course, the anti-detachment structure of the filling layer 130 is not limited to the mating structure of the plug-in piece and plug-in hole disclosed herein. The side of the fourth fold plate 134 facing the first fold plate 131 can also be glued to the first fold plate 131 with adhesive or double-sided tape.
[0055] The first fold plate 131, the second fold plate 132, the third fold plate 133, and the fourth fold plate 134 are the four fold plate segments 1301 mentioned above. These four fold plate segments 1301 are bent relative to each other along their corresponding pre-bending lines A to form the filling layer 130. Alternatively, multiple fold plate segments 1301 can be combined in different ways to form the first fold plate 131, the second fold plate 132, the third fold plate 133, and the fourth fold plate 134. The first fold plate 131, the second fold plate 132, the third fold plate 133, and the fourth fold plate 134 are each formed by multiple fold plate segments 1301 that are not bent relative to each other. The creases between these fold plate segments are the pre-bending lines A corresponding to the bending segments that need to be bent. In this case, multiple filling layers 130 with different heights and widths can be achieved through the combination of the fold plate segments 1301.
[0056] For example, when the packaging box 100 needs to be transported by land, the size of the first folding plate 131 increases. At this time, the number of unbent folding plate segments 1301 that make up the first folding plate 131 increases, thus increasing the size of the first folding plate 131. Since the number of multiple folding plate segments 1301 is fixed, an increase in the number of folding plate segments 1301 that make up the first folding plate 131 leads to a corresponding decrease in the number of folding plate segments 1301 corresponding to the other folding plates. Therefore, the size of the other folding plates decreases. In other words, the number of folding plate segments 1301 that make up the second folding plate 132 and the fourth folding plate 134 decreases, resulting in a smaller height for the filling layer 130. Here, the sizes of the second folding plate 132 and the fourth folding plate 134 control the height of the filling layer 130. Therefore, the decrease in the number of folding plate segments 1301 that make up the second folding plate 132 and the fourth folding plate 134 inevitably leads to a decrease in the height of the filling layer 130. Similarly, when the packaging box 100 needs to be transported by air, the size of the first folding plate 131 decreases. At this time, the number of folding plate segments 1301 that make up the first folding plate 131 decreases. Since the number of multiple folding plate segments 1301 is fixed, the decrease in the number of folding plate segments 1301 that make up the first folding plate 131 leads to a corresponding increase in the number of folding plate segments 1301 that make up the other folding plates. In other words, the number of folding plate segments 1301 that make up the second folding plate 132 and the fourth folding plate 134 increases, thus increasing the height of the filling layer 130.
[0057] In another alternative embodiment, the number of filling partitions 130 is at least two, and the at least two filling partitions 130 are spaced apart. This arrangement can avoid the risk of one-sided pressure on the article 200, thereby further improving the security of the article 200 packaging.
[0058] Furthermore, at least two filling partitions 130 can be respectively a first filling partition 130a and a second filling partition 130b, and the first filling partition 130a and the second filling partition 130b can be respectively connected to two opposite side walls of the box body 110. In this solution, the two filling partitions 130 are respectively connected to two opposite side walls of the box body 110, so the relative distance between the two filling partitions 130 is relatively large, thereby avoiding the risk of interference between the two filling partitions 130 and reducing the difficulty of folding the packaging box 100.
[0059] In an optional embodiment, the groove edge of the receiving groove 111 of the box body 110 has a first side 1111, a second side 1112, a third side 1113, and a fourth side 1114 connected end-to-end in the circumferential direction. The first side 1111 and the third side 1113 are arranged opposite each other along a first direction of the box body 110, and the second side 1112 and the fourth side 1114 are arranged opposite each other along a second direction of the box body 110. The first direction and the second direction intersect. Optionally, one of the first direction and the second direction can be the width direction of the box body 110, and the other can be the length direction of the box body. Of course, the first direction and the second direction are not limited to the length direction and the width direction of the box body; any two directions that intersect in the same plane are acceptable. Here, the first side 1111, the second side 1112, the third side 1113, and the fourth side 1114 are the sides on the four side walls of the box body 110.
[0060] The first filling layer 130a can be connected to the first side 1111, and the second filling layer 130b can be connected to the third side 1113. The cover 120 can be connected to one of the second side 1112 and the fourth side 1114.
[0061] In this design, the packaging box 100 has a rectangular box structure, which simplifies the structure of the packaging box 100 and further reduces the production cost of the packaging box 100.
[0062] In the above scheme, the cover 120 can be a single-plate structure, that is, the cover 120 is formed by a single plate. The single plate needs to cover the entire opening of the receiving groove 111.
[0063] In another alternative embodiment, the cover 120 may include a first cover plate 121 and a second cover plate 122. The first cover plate 121 may be connected to a second side 1112, and the second cover plate 122 may be connected to a fourth side 1114. In this embodiment, the cover 120 is formed by two cover plates, thereby reducing the area of each cover plate and facilitating the sealing and unsealing of the packaging box 100.
[0064] In another alternative embodiment, the substrate 300 may include a first plate 301, a second plate 302, a third plate 303, a fourth plate 304, a fifth plate 305, a sixth plate 306, a seventh plate 307, an eighth plate 308, a ninth plate 309, a tenth plate 3010, an eleventh plate 3011, and a twelfth plate 3012.
[0065] The first plate 301, the second plate 302, the third plate 303 and the fourth plate 304 are joined end to end to form the side wall of the box body 110.
[0066] The fifth plate 305 is connected to the first plate 301 and is bent relative to the first plate 301. The sixth plate 306 is connected to the second plate 302 and is bent relative to the second plate 302. The seventh plate 307 is connected to the third plate 303 and is bent relative to the third plate 303. The eighth plate 308 is connected to the fourth plate 304 and is bent relative to the fourth plate 304. The fifth plate 305, the sixth plate 306, the seventh plate 307, and the eighth plate 308 form the bottom wall of the box body 110.
[0067] The ninth plate 309 is connected to the first plate 301 on the side opposite to the fifth plate 305 and is bent relative to the first plate 301. The ninth plate 309 serves as the first cover plate 121. The tenth plate 3010 is connected to the second plate 302 on the side opposite to the sixth plate 306. The tenth plate 3010 forms the first filling layer 130a. The eleventh plate 3011 is connected to the third plate 303 on the side opposite to the seventh plate 307. The eleventh plate 3011 serves as the second cover plate 122. The twelfth plate 3012 is connected to the fourth plate 304 on the side opposite to the eighth plate 308. The twelfth plate 3012 forms the first filling layer 130a.
[0068] This solution can further simplify the structure of the packaging box 100, thereby further reducing the production cost of the packaging box 100.
[0069] Multiple pre-bending lines A can be set on the tenth plate 3010 and the twelfth plate 3012 by means of stamping, laser engraving and other methods.
[0070] The above embodiments of this utility model mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.
[0071] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A packaging box, characterized in that, include: The box body (110) has a receiving groove (111) for receiving the items (200) to be packaged. A cover (120) is connected to the box body (110) and is used to cover the opening of the receiving groove (111); A filling partition (130) is disposed on one of the box body (110) and the lid (120), the filling partition (130) being used to fill the gap between the lid (120) and the item (200) contained in the receiving groove (111); The box body (110), the cover (120) and the filling partition (130) are formed by integrally bending the same substrate (300).
2. The packaging box according to claim 1, characterized in that, The filling layer (130) includes a plurality of sequentially connected folded plate segments (1301), with a pre-bending line (A) between any two adjacent folded plate segments (1301), and any two adjacent folded plate segments (1301) can be bent relative to each other along the pre-bending line (A). The plurality of folded plate segments (1301) can be bent along different pre-bending lines (A) to adjust the height of the filling layer (130).
3. The packaging box according to claim 1, characterized in that, The filling layer (130) includes a first folding plate (131), a second folding plate (132), a third folding plate (133), and a fourth folding plate (134) connected in sequence. The side of the first folding plate (131) away from the second folding plate (132) is connected to the box body (110). The first folding plate (131) is located on the side of the cover (120) facing the receiving groove (111). The first folding plate (131) is bent relative to the box body (110) to form a first included angle. The second folding plate (132) is bent relative to the first folding plate (131) to form a second included angle. The third folding plate (133) is bent relative to the second folding plate (132) to form a third included angle. The fourth folding plate (134) is bent relative to the third folding plate (133) to form a fourth included angle. The side of the fourth folding plate (134) away from the third folding plate (133) abuts against the first folding plate (131).
4. The packaging box according to claim 3, characterized in that, The first included angle, the second included angle, the third included angle, and the fourth included angle are all 90°.
5. The packaging box according to claim 3, characterized in that, The first folding plate (131) has an insertion hole, and the fourth folding plate (134) has an insertion piece on the side facing the first folding plate (131), and the insertion piece is inserted into the insertion hole.
6. The packaging box according to claim 1, characterized in that, The number of the filling spacers (130) is at least two, and the at least two filling spacers (130) are spaced apart.
7. The packaging box according to claim 6, characterized in that, At least two of the filling partitions (130) are a first filling partition (130a) and a second filling partition (130b), respectively, and the first filling partition (130a) and the second filling partition (130b) are respectively connected to two opposite side walls of the box body (110).
8. The packaging box according to claim 7, characterized in that, The groove edge of the receiving groove (111) of the box body (110) has a first side (1111), a second side (1112), a third side (1113), and a fourth side (1114) connected end to end in the circumferential direction. The first side (1111) and the third side (1113) are arranged opposite to each other along a first direction of the box body (110), and the second side (1112) and the fourth side (1114) are arranged opposite to each other along a second direction of the box body (110). The first direction intersects the second direction. The first filling layer (130a) is connected to the first side (1111), the second filling layer (130b) is connected to the third side (1113), and the cover (120) is connected to one of the second side (1112) and the fourth side (1114).
9. The packaging box according to claim 8, characterized in that, The cover (120) includes a first cover plate (121) and a second cover plate (122), the first cover plate (121) being connected to the second side (1112) and the second cover plate (122) being connected to the fourth side (1114).
10. The packaging box according to claim 9, characterized in that, The substrate (300) includes a first plate (301), a second plate (302), a third plate (303), a fourth plate (304), a fifth plate (305), a sixth plate (306), a seventh plate (307), an eighth plate (308), a ninth plate (309), a tenth plate (3010), an eleventh plate (3011), and a twelfth plate (3012). The first plate (301), the second plate (302), the third plate (303) and the fourth plate (304) are connected end to end to form the side wall of the box body (110); The fifth plate (305) is connected to the first plate (301) and bent relative to the first plate (301); the sixth plate (306) is connected to the second plate (302) and bent relative to the second plate (302); the seventh plate (307) is connected to the third plate (303) and bent relative to the third plate (303); the eighth plate (308) is connected to the fourth plate (304) and bent relative to the fourth plate (304); the fifth plate (305), the sixth plate (306), the seventh plate (307) and the eighth plate (308) form the bottom wall of the box body (110); The ninth plate (309) is connected to the first plate (301) on the side away from the fifth plate (305) and is bent relative to the first plate (301). The ninth plate (309) is the first cover plate (121). The tenth plate (3010) is connected to the second plate (302) on the side away from the sixth plate (306). The tenth plate (3010) forms the first filling layer (130a). The eleventh plate (3011) is connected to the third plate (303) on the side away from the seventh plate (307). The eleventh plate (3011) is the second cover plate (122). The twelfth plate (3012) is connected to the fourth plate (304) on the side away from the eighth plate (308). The twelfth plate (3012) forms the first filling layer (130a).