Packaging box

Abstract

The utility model relates to a packaging box, which belongs to the technical field of transportation packaging, is used for packaging coiled materials and comprises a bottom support, a surrounding plate arranged on the peripheral side of the bottom support and a top cover arranged on the surrounding plate. The coamings comprise a pair of first coamings arranged at the two ends of the collet in the length direction and a pair of second coamings arranged at the two ends of the collet in the width direction; the first surrounding plate comprises a first main plate and a first movable plate, and a first notch is concavely formed in the top of the first main plate in the direction close to the bottom support; the first movable plate is rotationally connected to the first main plate, and the shape of the first movable plate is matched with that of the first notch, so that the first movable plate can open or close the first notch; the two ends of the coiled material can be contained in the first notches of the first main plate and can be moved out in the opening direction of the first notches. The coiled materials can be taken out and placed conveniently, the working hours of workers are saved, and the loading and transporting efficiency is improved.

Description

Technical Field

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

[0002] The existing copper foil and aluminum foil are protected by a wooden board support contact surface and a composite material. The composite material is easy to wear and needs to be replaced. The replacement process is cumbersome and has poor stability. In addition, the protective wrapping surface of the core on the end plate cannot be replaced as a whole. The wooden board support contact surface needs to be fixed with iron nails, which poses a risk of work-related injuries. The wooden structure has sawdust that can easily contaminate the product. In addition, the manufacturing accuracy of traditional packaging boxes is poor. When placing the boxes, they need to be precisely positioned, which can easily cause collisions with parts. When recycling, they need to be disassembled and the operation is difficult. Utility Model Content

[0003] One purpose of the utility model is to solve the technical problem of difficulty in hoisting traditional packaging boxes when recycling or placing coiled materials.

[0004] In order to solve the above technical problems, the utility model provides a packaging box for coil packaging, the packaging box comprising: a base; a surrounding plate, which is arranged on the surrounding side of the base, and the surrounding plate and the base form a containing cavity; the containing cavity is used to contain the coil, and the length direction of the coil is consistent with the length direction of the base; a top cover, which is arranged on the surrounding plate, and is used to close the opening of the containing cavity; wherein the surrounding plate comprises a pair of first surrounding plates arranged at both ends of the length direction of the base, and a pair of second surrounding plates arranged at both ends of the width direction of the base; the first surrounding plate comprises a first main board and a first movable plate, the top of the first main board is recessed toward the direction of the base to form a first notch; the first movable plate is rotatably connected to the first main board, and the shape of the first movable plate matches the shape of the first notch, so that the first movable plate can open or close the first notch; the two ends of the coil can be accommodated in the first notch of the first main board, and can be moved out along the opening direction of the first notch.

[0005] Optionally, a first card slot is provided on the first main board, the first card slot is located below the first notch, and the first card slot matches the bottom surface contours of the two ends of the coil in the length direction so that the two ends of the coil can be positioned in the first card slot.

[0006] Optionally, a second slot is provided on the first movable plate, and the second slot matches the top surface contours of the two ends of the coil; when the first movable plate closes the first notch, the second slot abuts against the top surfaces of the two ends of the coil in the length direction.

[0007] Optionally, the first enclosure plate further includes a reinforcing steel pipe, which is disposed in the first main board and below the first card slot.

[0008] Optionally, the second enclosure panel includes a second main board and a second movable board, and the top of the second main board is recessed toward the direction of the base to form a second gap; the second movable board is rotatably connected to the second main board and matches the shape of the second gap, so that the second movable board can open or close the second gap.

[0009] Optionally, a plurality of clamping columns are provided on both sides of the first enclosure, and clamping holes corresponding to the clamping columns are provided on both sides of the second enclosure. The clamping columns on the first enclosure can be accommodated in the clamping holes of the second enclosure to connect the first enclosure and the second enclosure.

[0010] Optionally, a storage cavity is provided on the top surface of the base support, and the first enclosure and the second enclosure are detachably connected to the base support, and the first enclosure and the second enclosure that are oppositely arranged can be folded inwardly towards each other to be accommodated in the storage cavity.

[0011] Optionally, the bottom surfaces of the first enclosure and the second enclosure are both provided with a first connecting portion protruding outward; the base support is provided with a second connecting portion that cooperates with the first connecting portion, and the second connecting portion is recessed on the periphery of the top surface of the base support, and the second connecting portion has openings in two directions toward the top and the inside of the base support, so that the first connecting portions on the first enclosure and the second enclosure can be inserted into the second connecting portion in a horizontal direction or a vertical direction.

[0012] Optionally, the first connecting portion includes two oppositely disposed bosses, a first partition is provided in the second connecting portion, and the first partition is vertically disposed on the base to form the second connecting portion into two mutually spaced slots for accommodating the two oppositely disposed bosses.

[0013] Optionally, hook heads are provided on the opposite surfaces of the two bosses; a second partition is also provided on the outer side surface of the first partition, and the first partition and the second partition form a hook groove; the hook head can be accommodated in the hook groove and hook the second partition to limit the first enclosure and the second enclosure.

[0014] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0015] The present application provides a packaging box, which includes a base, a panel arranged on the base, and a top cover arranged on the panel. The panel includes a pair of first panels arranged at both ends of the base in the length direction, and a pair of second panels arranged at both ends of the base in the width direction. A first notch is provided on a first main board of the first panel, and a first movable panel is rotatably connected to the first notch.

[0016] When the coil needs to be hoisted into or out of the packaging box, it is only necessary to rotate the first movable plate to open the first notch, and the sling can hoist the coil through the first notch. The coil can be shipped or disassembled without removing the surrounding panels of the packaging box, which greatly facilitates the removal and placement of the coil, saves workers' working hours, and improves shipping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the packaging box;

[0018] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the packaging box after the top cover is removed;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure of the packaging box when the first movable panel and the second movable panel are opened;

[0020] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the top cover of the middle packaging box;

[0021] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the enclosure of the middle packaging box;

[0022] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the first enclosure of the middle packaging box;

[0023] Figure 7 for Figure 5 A schematic diagram of the three-dimensional structure of the second enclosure of the middle packaging box;

[0024] Figure 8 for Figure 5 An enlarged structural schematic diagram of a first connecting portion of a panel of a middle packaging box;

[0025] Fig. 9 for Figure 1 A schematic diagram of the three-dimensional structure of the bottom support of the middle packaging box;

[0026] Fig.10 It is a schematic diagram of the three-dimensional structure of the packaging box when the panels are stored and folded;

[0027] Fig.11 This is a schematic diagram of the three-dimensional structure of the packaging box when it is stored.

[0028] The following are the descriptions of the reference numerals:

[0029] 100, packaging box; 10, bottom support; 11, storage cavity; 12, second connecting part; 121, slot; 122, first partition; 123, second partition; 13, fork slot; 14, positioning slot; 20, enclosure; 21, first enclosure; 211, first main board; 2111, first notch; 2112, first slot; 2113, snap-on column; 2114, reinforced steel pipe; 212, first movable board; 2121, second slot; 22, second enclosure; 221, second main board; 2211, second notch; 2212, snap-on hole; 222, second movable board; 23, first connecting part; 231, boss; 232, hook; 30, top cover; 31, enclosure; 32, positioning rib; 40, gripping part; 200, coil; 201, roller. DETAILED DESCRIPTION

[0030] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0031] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In order to solve the technical problem that the existing packaging boxes for coiled materials are difficult to load and unload, the inventor provides a portable packaging box 100 that is easy to load and unload.

[0034] See also Figures 1 to 11 The packaging box 100 of this embodiment includes a base 10, a panel 20 and a top cover 30. The panel 20 is arranged on the periphery of the base 10 to form a receiving cavity with one end open. The top cover 30 is arranged on the panel 20 and closes the opening of the receiving cavity.

[0035] It should be understood that the packaging box 100 in this embodiment is used to package the coil 200, and the coil 200 is a metal foil, which is specifically a copper foil or an aluminum foil. The metal foil is wrapped on a roller 201 to form a cylindrical coil 200. The roller 201 is a tubular roller 201 with openings at both ends and a hollow interior, which can facilitate the disassembly of the coil 200.

[0036] It is conceivable that the packaging box 100 in this embodiment can also be used to package other non-metallic coils 200, such as some polyester film rolls.

[0037] Furthermore, in the present embodiment, the base 10, the enclosure 20 and the top cover 30 are all made of PP (polypropylene) injection molded pallets, and the pallets are injection molded; this can effectively increase the production speed of the packaging box 100 and improve market competitiveness.

[0038] See also Figures 1 to 3 In this embodiment, the enclosure 20 includes a pair of first enclosures 21 disposed at both ends of the base 10 in the length direction, and a pair of second enclosures 22 disposed at both ends of the base 10 in the width direction. That is, the first enclosure 21 is disposed along the width direction of the base 10, and the second enclosure 22 is disposed along the length direction of the base 10. The first enclosure 21 is disposed at both ends of the roller shaft 201 of the coil 200.

[0039] The first enclosure 21 includes a first main board 211 and a first movable board 212. The first main board 211 is provided with a first notch 2111 for the sling to be inserted into, and the first notch 2111 is recessed toward the bottom bracket 10 to form an opening above the first main board 211. The roller 201 of the coil 200 can enter the first notch 2111 from the top opening of the first notch 2111 and abut against the first main board 211 to be fixed in the packaging box 100.

[0040] like Figure 2 and Figure 3 As shown, the first main board 211 is also connected to a first movable plate 212 that matches the shape of the first notch 2111 . The first movable plate 212 is rotatably connected to the first main board 211 and can close or open the first notch 2111 on the first main board 211 .

[0041] When the coil 200 needs to be loaded, the metal shaft on the sling only needs to be inserted into the roller shaft 201 of the coil 200, and the two ends of the metal shaft are lifted by a crane. Then the coil 200 is placed directly above the packaging box 100, and the roller shafts 201 at both ends of the coil 200 move downward along the first notch 2111 and snap onto the first main board 211. Finally, the metal shaft is pulled out horizontally, the first movable plate 212 is rotated to close the first notch 2111, and the top cover 30 is buckled onto the enclosure 20, and the loading of the coil 200 is completed.

[0042] When the coil 200 needs to be unloaded, it is only necessary to open the top cover 30 and rotate the first movable plate 212 to open the first notch 2111, then insert the metal shaft on the sling into the roller shaft 201, and lift the two ends of the metal shaft by hoisting, so that the coil 200 can be lifted out from the top opening of the first notch 2111, thereby realizing the disassembly of the coil 200.

[0043] When disassembling and hoisting the packaging box 100 of this embodiment, it is only necessary to rotate the first movable plate 212, and there is no need to disassemble the enclosure 20. The hoisting process is simple and convenient, which can effectively improve the disassembly and assembly efficiency of workers and reduce labor costs.

[0044] It is important to understand that Figure 3 As shown, the bottom of the first notch 2111 is an arc-shaped groove, and the bottom of the corresponding first movable plate 212 is also formed with an arc-shaped protrusion. The bottom of the first notch 2111 is set as an arc-shaped groove so that the end of the roller 201 on the coil 200 can be exposed to the greatest extent, so that the metal shaft on the sling can pass through. Of course, the first notch 2111 and the first movable plate 212 are not limited to this shape.

[0045] Please continue reading Figure 3 In this embodiment, the second enclosure 22 includes a second main board 221 and a second movable board 222 rotatably connected to the second main board 221 .

[0046] The second main board 221 is provided with a second notch 2211, which is recessed toward the direction close to the bottom bracket 10, and the second notch 2211 forms an opening in the direction of the top cover 30 of the second main board 221. The second movable plate 222 is rotatably connected to the second main board 221, and the shape of the second movable plate 222 matches the shape of the second notch 2211, so that the second movable plate 222 can close or open the second notch 2211.

[0047] like Figure 3 As shown, when the first notch 2111 and the second notch 2211 on the first enclosure 21 and the second enclosure 22 are both opened, the operator can pass the cable through the second notch 2211 on the second enclosure 22 to under the roller 201 of the coil 200, and then lift the coil 200 by a crane connected to the cable.

[0048] A second movable plate 222 that can be rotatably opened is provided on the second enclosure 22, so that the coil 200 can be hoisted and disassembled in another way, which can improve the disassembly and assembly diversity of the coil 200, enable it to be loaded and unloaded in different working environments, and further increase the disassembly and assembly speed.

[0049] See also Figure 3In this embodiment, based on the shape and size restrictions of the first movable plate 212 and the second movable plate 222, the side of the first movable plate 212 is connected to the first main board 211, so that the rotation axis of the first movable plate 212 is in the vertical direction, and it can be flipped left and right in the vertical direction to open or close the first notch 2111. The bottom edge of the second movable plate 222 is connected to the second main board 221, so that the rotation axis of the second movable plate 222 is in the horizontal direction, and it can be flipped up and down in the horizontal direction to open or close the second notch 2211.

[0050] It is conceivable that the first movable plate 212 and the first main plate 211 , as well as the second movable plate 222 and the second main plate 221 , can be rotatably connected by means of hinges or hinges.

[0051] See also Figure 6 In this embodiment, a first card slot 2112 is provided on the inner side surface of the first main board 211, and the first card slot 2112 is located below the first notch 2111. The first card slot 2112 is a semi-enclosed recessed groove, and the lower side wall of the first card slot 2112 is an arc-shaped surface, which matches the bottom surface profile of the roller shaft 201 at both ends of the coil 200, so that the roller shaft 201 of the coil 200 can be clamped in the first card slot 2112 of the first main board 211, which can effectively limit the roller shaft 201 of the coil 200, so that the coil 200 can be fixed in the packaging box 100.

[0052] Please continue reading Figure 6 In this embodiment, a second slot 2121 is provided on the first movable plate 212, and the second slot 2121 is also a semi-enclosed recess. The upper side wall of the second slot 2121 matches the top surface profile of the roller shaft 201 of the coil 200, so that when the first movable plate 212 closes the first notch 2111, the side wall of the second slot 2121 can abut against the top of the roller shaft 201 of the coil 200, so as to limit the position of the roller shaft 201 of the coil 200.

[0053] Furthermore, in order to prevent the first movable plate 212 from interfering with the roller 201 of the coil 200 when closed, the second slot 2121 in this embodiment is semi-elliptical, and when it abuts against the roller 201, only the topmost arc-shaped side wall contacts and limits the top surface of the coil 200, so as to position the coil 200.

[0054] See also Figure 6 In this embodiment, the bottom surface of the groove formed by the first groove 2112 and the second groove 2121 to form the positioning portion can also abut against the end surface of the roller shaft 201 of the coil 200 to limit the axial movement of the coil 200.

[0055] Please continue reading Figure 6In some examples of this embodiment, the first enclosure 21 further includes a reinforcing steel pipe 2114. The reinforcing steel pipe 2114 is a rectangular hollow steel pipe. The reinforcing steel pipe 2114 is embedded in the first main board 211 during the injection molding of the first enclosure 21, and is arranged below the first card slot 2112 to effectively enhance the strength of the first main board 211 so that it can support the heavy coil 200.

[0056] See also Figure 6 and Figure 7 A plurality of clamping posts 2113 are provided on both sides of the first enclosure 21, and a plurality of clamping holes 2212 corresponding to the clamping posts 2113 are provided on both sides of the second enclosure 22. The clamping posts 2113 on the first enclosure 21 can be accommodated in the clamping holes 2212 of the second enclosure 22 to connect the first enclosure 21 and the second enclosure 22.

[0057] Specifically, Figure 5 As shown, the first enclosure 21 is provided with convex ribs protruding inward on both sides, and relatively protruding clamping columns 2113 are provided on the inner side of the ribs, and the clamping columns 2113 are arranged at intervals in the vertical direction. The second enclosure 22 is provided with connecting grooves corresponding to the ribs in the vertical direction, and the connecting grooves are provided with a plurality of clamping holes 2212 evenly distributed in the vertical direction.

[0058] When the first enclosure 21 and the second enclosure 22 are docked, the convex rib on the first enclosure 21 docks with the connecting groove on the second enclosure 22, and the snap-in column 2113 is accommodated in the snap-in hole 2212 to connect the first enclosure 21 and the second enclosure 22 to each other, thereby effectively improving the tightness between the enclosures 20.

[0059] See also Figures 9 to 11 In this embodiment, a storage cavity 11 is provided on the top surface of the base 10, and the first enclosure 21 and the second enclosure 22 are detachably connected to the base 10. The first enclosure 21 and the second enclosure 22 connected to the base 10 and arranged opposite to each other can be folded toward each other and accommodated in the storage cavity 11 of the base 10.

[0060] Among them, the side walls of the storage cavity 11 on the base 10 in the length direction are lower than the side walls in the width direction, so that after the first enclosure 21 and the second enclosure 22 are connected to the side walls of the base 10, they can be folded opposite to each other and accommodated in the internal storage cavity 11; so as to reduce the space occupied by the packaging box 100, so that the space occupied by a single packaging box 100 during recycling and transportation is small, thereby improving the transportation efficiency of the packaging box 100 per vehicle and reducing transportation costs.

[0061] See also Figure 8 and Fig. 9 This embodiment provides a specific connection structure between the enclosure 20 and the base 10.

[0062] The bottom surfaces of the first enclosure 21 and the second enclosure 22 are both provided with a first connection portion 23. The first connection portion 23 protrudes toward the base 10. The base 10 is provided with a second connection portion 12 that matches the first connection portion 23. The second connection portion 12 is recessed on the top surface of the side wall of the base 10, and the second connection portion 12 has openings in two directions, namely, the top and the inside of the base 10, so that the first connection portion 23 can be inserted into the second connection portion 12 at horizontal and vertical angles, so that the first enclosure 21 and the second enclosure 22 are connected to the base 10.

[0063] Specifically, in this embodiment, when the enclosure 20 stands vertically on the side wall of the base 10, it and the bottom wall of the base 10 form a receiving cavity for receiving the coil 200. The first connecting portion 23 of the enclosure 20 is horizontally inserted into the second connecting portion 12 of the base 10, and the enclosure 20 is folded in half and received in the receiving cavity 11 of the base 10.

[0064] Further, such as Figure 8 As shown, the first connection portion 23 includes two bosses 231 that are spaced apart from each other. Hooks 232 are provided on opposite surfaces of the two bosses 231 , and the hooks 232 are rectangular blocks.

[0065] like Fig. 9 As shown, a first partition 122 and a second partition 123 are provided in the second connection portion 12 . The first partition 122 is vertically arranged on the base 10 , so that the second connection portion 12 forms two slots 121 spaced apart from each other for accommodating two bosses 231 .

[0066] The second partition 123 is arranged on the first partition 122, and the second partition 123 and the first partition 122 form a hook groove on the opposite side of the slot 121. When the boss 231 is accommodated in the slot 121, the hook head 232 is correspondingly accommodated in the hook groove and can hook the second partition 123 to limit the horizontal movement of the first enclosure 21 and the second enclosure 22, so that the first enclosure 21 and the second enclosure 22 can only move upward and separate from the base 10 in either a horizontal or vertical state, and cannot move horizontally inward and separate from the base 10. The cooperation between the hook head 232 and the second partition 123 can provide the connection strength between the enclosure 20 and the base 10, especially when the enclosure 20 is in a vertical working state, it will not fold inward due to external force, which effectively improves the strength of the packaging box 100.

[0067] It is conceivable that the first connection portion 23 and the second connection portion 12 may also be dovetail grooves that match each other, which may also realize horizontal and vertical connection between the enclosure 20 and the base 10. Of course, the enclosure 20 and the base 10 may also be connected by a hinge or hinge device to realize the opposite folding of the enclosure 20 and the base 10.

[0068] See also Figure 4 and Figure 5 In some embodiments, the outer surfaces of the top cover 30, the first enclosure 21 and the second enclosure 22 are provided with a grip 40 for the user to hold.

[0069] Specifically, four recessed gripping portions 40 are provided on the top surface of the top cover 30 to facilitate quick removal and installation of the top cover 30 .

[0070] The first main board 211 and the first movable board 212 of the first enclosure 21 are both provided with two inwardly recessed gripping portions 40, and the second main board 221 and the second movable board 222 of the second enclosure 22 are also provided with two mutually inwardly recessed gripping portions 40. The gripping portions 40 on the first main board 211 and the second main board 221 can facilitate the user to store and fold the packaging box 100, and the gripping portions 40 on the first movable board 212 and the second movable board 222 can facilitate the user to flip and move to open or close the first notch 2111 and the second notch 2211.

[0071] See also Figure 4 In some embodiments, a baffle 31 is protruded around the bottom surface of the top cover 30, and the baffle 31 can be clamped on the top of the enclosure 20 to improve the sealing of the packaging box 100. In addition, when the packaging box 100 is folded, the baffle 31 can be clamped on the top of the bottom bracket 10 to facilitate the recycling and transportation of the entire packaging box 100.

[0072] See also Figure 4 and Fig. 9 In some embodiments, a plurality of positioning ribs 32 are convexly provided on the periphery of the top surface of the top cover 30. Correspondingly, a positioning groove 14 matching the positioning ribs 32 is provided on the bottom surface of the bottom support 10. When two packaging boxes 100 are stacked, the positioning groove 14 on the bottom support 10 of one packaging box 100 can be butted against the positioning rib 32 on the top cover 30 of the other packaging box 100 to prevent the packaging boxes 100 from slipping when stacked, so that the two packaging boxes 100 can be stably stacked on each other.

[0073] See also Fig. 9 In some embodiments, the bottom surface of the base 10 is also provided with a fork groove 13 extending along the length direction of the base 10 and along the width direction of the base 10. The fork groove 13 can cooperate with a forklift so that the fork on the forklift can be inserted into the fork groove 13 to transport the packaging box 100.

[0074] In summary, the present embodiment provides a packaging box 100, which includes a base 10, a panel 20 arranged on the base 10, and a top cover 30 arranged on the panel 20. The panel 20 includes a first panel 21 arranged along the width direction of the base 10, and a second panel 22 arranged along the length direction of the base 10. A first notch 2111 is provided on the first main board 211 of the first panel 21, and a first movable plate 212 is rotatably connected to the first notch 2111. When the coil 200 needs to be hoisted into or out of the packaging box 100, it is only necessary to rotate the first movable plate 212 so that the first movable plate 212 opens the first notch 2111, and the hoist can hoist the coil 200 through the first notch 2111. The coil 200 can be shipped and disassembled without removing the panel 20 of the packaging box 100, which greatly facilitates the removal and placement of the coil 200, saves workers' working hours, and improves shipping efficiency.

[0075] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A packaging box, characterized in that: For coil packaging, the packaging box includes: Bottom support; A surrounding plate is arranged on the peripheral side of the base, and the surrounding plate and the base are combined to form a receiving cavity; the receiving cavity is used to receive the coil, and the length direction of the coil is consistent with the length direction of the base; A top cover, arranged on the enclosure plate, for closing the opening of the accommodating cavity; Wherein, the enclosure includes a pair of first enclosures arranged at both ends of the base in the length direction, and a pair of second enclosures arranged at both ends of the base in the width direction; the first enclosure includes a first main board and a first movable board, and the top of the first main board is recessed toward the base to form a first notch; the first movable board is rotatably connected to the first main board, and the shape of the first movable board matches the shape of the first notch, so that the first movable board can open or close the first notch; the two ends of the coil can be accommodated in the first notch of the first main board and can be moved out along the opening direction of the first notch.

2. The packaging box according to claim 1, characterized in that: The first main board is provided with a first card slot, which is located below the first notch and matches the bottom surface contours of the two ends of the coil in the length direction so that the two ends of the coil can be positioned in the first card slot.

3. The packaging box according to claim 2, characterized in that: The first movable plate is provided with a second slot, which matches the top surface contours of the two ends of the coil; when the first movable plate closes the first notch, the second slot abuts against the top surfaces of the two ends of the coil in the length direction.

4. The packaging box according to claim 2, characterized in that: The first enclosure plate also includes a reinforcing steel pipe, which is arranged in the first main board and below the first card slot.

5. The packaging box according to claim 1, characterized in that: The second enclosure includes a second main board and a second movable board, and the top of the second main board is recessed toward the bottom support to form a second gap; the second movable board is rotatably connected to the second main board and matches the shape of the second gap, so that the second movable board can open or close the second gap.

6. The packaging box according to claim 1, characterized in that: A plurality of clamping columns are provided on both sides of the first enclosure, and clamping holes corresponding to the clamping columns are provided on both sides of the second enclosure. The clamping columns on the first enclosure can be accommodated in the clamping holes of the second enclosure to connect the first enclosure and the second enclosure.

7. The packaging box according to claim 1, characterized in that: A storage cavity is provided on the top surface of the base bracket, the first enclosure and the second enclosure are detachably connected to the base bracket, and the first enclosure and the second enclosure that are oppositely arranged can be folded inwardly towards each other to be accommodated in the storage cavity.

8. The packaging box according to claim 7, characterized in that: The bottom surfaces of the first enclosure and the second enclosure are both provided with a first connecting portion protruding outward; the base is provided with a second connecting portion that matches the first connecting portion, and the second connecting portion is recessed on the outer periphery of the top surface of the base, and the second connecting portion has openings in two directions facing the top and the inside of the base, so that the first connecting portions on the first enclosure and the second enclosure can be inserted into the second connecting portion in a horizontal direction or a vertical direction.

9. The packaging box according to claim 8, characterized in that: The first connection part includes two oppositely arranged bosses, and the second connection part is provided with a first partition plate, which is vertically arranged on the base to form the second connection part into two mutually spaced slots for accommodating the two oppositely arranged bosses.

10. The packaging box according to claim 9, characterized in that: Hook heads are provided on the opposite surfaces of the two bosses; a second partition is also provided on the outer side surface of the first partition, and the first partition and the second partition form a hook groove; the hook head can be accommodated in the hook groove and hook the second partition to limit the first enclosure and the second enclosure.

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