An environment-friendly carton with tape-free sealing

Abstract

The application discloses an environment-friendly paper box without adhesive tape packaging and belongs to the paper box processing technical field, and has the technical scheme as follows: the paper box is provided with a surrounding plate and a plurality of cover plates, the cover plates and the surrounding plate are integrally formed, cavities are formed on opposite sides of the cover plates, a plurality of rotatable packaging rods are connected in the cavities, a limiting assembly for limiting the rotation of the packaging rods when the packaging rods are connected to the cover plates is arranged on the cover plates, the limiting assembly comprises limiting columns and limiting rods, the limiting columns penetrate through the cover plates and are slidably connected to the cover plates, and the limiting rods are fixedly connected to bottom ends of the limiting columns. The paper box has the effect of improving the paper box recycling rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carton processing, and in particular to an environment-friendly carton without adhesive tape packaging. BACKGROUND

[0002] With the rapid development of e-commerce, especially the rise of network e-commerce platforms, the logistics and express industry has shown explosive growth. As an indispensable part of modern logistics, it bears the important responsibility of containing and protecting products.

[0003] In the related art, the carton includes a carton surrounding plate and a plurality of carton cover plates, the carton cover plates are integrally formed with the carton surrounding plate, and the carton cover plates cover the space surrounded by the carton surrounding plate when being folded. The existing packaging method is to use packaging tape to package the gap between the carton cover plates.

[0004] In view of the above related art, the inventors believe that the following defects exist: when the existing carton is unpacked, if the adhesive tape is torn open, the surface paper layer of the carton is easily peeled off, resulting in damage to the appearance of the carton and thinning of the thickness, which cannot be reused, causing waste; if the adhesive tape is cut open with a knife, too much adhesive tape will be stuck on the carton, which will also affect subsequent reuse. SUMMARY

[0005] In order to improve the reuse rate of the carton, the present application provides an environment-friendly carton without adhesive tape packaging.

[0006] The environment-friendly carton without adhesive tape packaging provided by the present application adopts the following technical scheme:

[0007] An environment-friendly carton without adhesive tape packaging includes a carton surrounding plate and a plurality of carton cover plates, the carton cover plates are integrally formed with the carton surrounding plate, cavities are formed on opposite sides of two carton cover plates, a plurality of rotatable packaging rods are connected in the cavities, a limiting assembly is arranged on the carton cover plate to limit the rotation of the packaging rods to connect the two carton cover plates, the limiting assembly includes a limiting column and a limiting rod, the limiting column penetrates through the carton cover plate and is in sliding connection with the carton cover plate, and the limiting rod is fixedly connected to the bottom end of the limiting column.

[0008] By adopting the above technical scheme, when in use, the carton cover plates are folded, the top surface and the bottom surface of the carton surrounding plate are covered, then the packaging rod is rotated, the carton cover plates are connected through the packaging rod, the packaging rod is arranged to rotate, when the carton is not used and the carton does not need to be packaged, the packaging rod is rotated into the carton cover plates, the packaging rod is prevented from protruding from the carton cover plates and being damaged, when the carton is used, the packaging rod is rotated between the two carton cover plates, the limiting column is pressed downward to abut against the bottom surface of the carton cover plate, the packaging rod is limited, the packaging rod is prevented from moving when the carton is moved or the carton shakes, the packaging rod is prevented from shaking when the carton is used, the packaging effect is lost, the position stability of the packaging rod is improved, the stability of the packaged carton is improved, the carton can be packaged without using adhesive tape, the reusability of the carton is improved, and the environmental protection requirement is met.

[0009] Preferably, an auxiliary packaging assembly for further packaging the carton cover plates is arranged between the plurality of packaging rods, the auxiliary packaging assembly comprises a packaging plate and a guide rod, the packaging plate is placed in the cavity and can slide in the cavity, the guide rod is fixedly connected to the upper surface of the packaging plate, and a guide groove for sliding of the guide rod is formed in the carton cover plate.

[0010] By adopting the above technical scheme, after the packaging rod is rotated to package the carton, the guide rod is moved, the packaging plate packages the gap between the two carton cover plates, the packaging area is increased, the carton cover plates are prevented from separating from each other when the carton is moved, loss is caused, and the packaging property of the carton is improved.

[0011] Preferably, a rotating assembly is connected to the packaging rod, the rotating assembly comprises a rotating rod and a knob, the rotating rod is fixedly connected to the side of the packaging rod away from the limiting assembly, the rotating rod penetrates through the upper surface of the carton cover plate, and the knob is fixedly connected to the top end of the rotating rod.

[0012] By adopting the above technical scheme, the knob is manually rotated, the knob drives the rotating rod and the packaging rod to rotate, the periphery of the knob is provided in a sawtooth shape, the friction between the worker's hand and the knob is increased when the knob is rotated, and the knob is more easily and conveniently rotated.

[0013] Preferably, a supporting assembly is arranged between the carton surrounding plate and the carton cover plate of the bottom surface, the supporting assembly comprises two supporting plates, a supporting rod and a fixing piece, the two supporting plates are fixedly connected to the inner walls of the carton surrounding plate and the carton cover plate respectively, the two supporting plates abut against each other, the supporting rod is slidably connected to the two supporting plates, and the fixing piece for fixing the supporting rod and the supporting plates is arranged between the supporting plates and the supporting rod.

[0014] By adopting the technical scheme, the support rods are used to support the support plates apart by 90 degrees when the carton is used, and the two are fixed by using the fixing members, so that the angle between the carton cover plates and the carton surrounding plates is fixed at 90 degrees, and the change of the angle between the carton cover plates and the carton surrounding plates does not affect the storage of the objects in the carton when the carton is carried.

[0015] Preferably, a sealing assembly is arranged between the carton cover plates and the carton surrounding plates.

[0016] By adopting the technical scheme, the sealing assembly is used to seal the connection between the carton cover plates and the carton surrounding plates, the sealing area is increased, and the stability of the sealing of the carton is improved.

[0017] Preferably, the sealing assembly comprises a sealing plate and a plurality of sealing fixing members, the sealing plate is arranged at the connection between the two carton cover plates, and the plurality of sealing fixing members respectively pass through and fix the sealing plate and the carton cover plates, the sealing plate and the carton surrounding plates.

[0018] By adopting the technical scheme, the sealing plate is buckled at the connection between the carton cover plates and the carton surrounding plates when the carton is used, the sealing fixing members are used to pass through and fix the sealing plate and the carton cover plates, the carton surrounding plates, the connection between the two carton cover plates is sealed, and the edge of the connection of the carton cover plates is prevented from being warped when the carton is carried, so that the stability of the sealing of the carton is improved.

[0019] Preferably, a reinforcing assembly is arranged at the bending part of the carton surrounding plate, the reinforcing assembly comprises a reinforcing plate and a plurality of reinforcing members, the reinforcing plate is arranged at the bending part of the carton surrounding plate, and the reinforcing members pass through and fix the reinforcing plate and the carton surrounding plate.

[0020] By adopting the technical scheme, the reinforcing plate is buckled at the bending part of the carton surrounding plate, the reinforcing members are used to fix the reinforcing plate and the carton cover plates, the bending part of the carton surrounding plate is fixed and supported, and the carton surrounding plates are prevented from being pressed when the carton is carried, so that the objects in the carton are prevented from being damaged.

[0021] Preferably, a pressure-resistant reinforcing plate is fixedly connected in the carton surrounding plate.

[0022] By adopting the technical scheme, the arrangement of the reinforcing plate improves the pressure resistance of the carton, reduces the situation that the carton is pressed and deformed, and improves the reusability of the carton.

[0023] Preferably, a pressure-resistant reinforcing rib is fixedly connected between the reinforcing plate and the carton surrounding plate.

[0024] Through the adoption of the above technical scheme, the setting of the reinforcing rib further improves the compression resistance of the carton, reduces the occurrence of the carton being extruded and deformed, and improves the reusability of the carton.

[0025] In summary, the present application has the following advantages:

[0026] 1. The carton can be packaged by using the packaging rod and the auxiliary packaging assembly, without the need for adhesive tape bonding, which facilitates disassembly and improves the reusability of the carton, and meets the requirements of national environmental protection and energy saving.

[0027] 2. The setting of the compression-resistant reinforcing plate and the compression-resistant reinforcing rib increases the compression-resistant and non-deformable characteristics of the carton, so that the carton can be reused. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural diagram of an adhesive tape-free packaged environment-friendly carton.

[0029] Figure 2 is a structural diagram of an adhesive tape-free packaged environment-friendly carton, which is intended to show the auxiliary packaging assembly.

[0030] Figure 3 is a structural diagram of an adhesive tape-free packaged environment-friendly carton, which is intended to show the rotating assembly.

[0031] Figure 4 is a structural diagram of an adhesive tape-free packaged environment-friendly carton, which is intended to show the supporting assembly.

[0032] Figure 5 is a structural diagram of an adhesive tape-free packaged environment-friendly carton, which is intended to show the compression-resistant reinforcing plate.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1, carton surrounding plate; 2, carton cover plate; 21, guide groove; 3, packaging rod; 31, rotating assembly; 311, rotating rod; 312, knob; 4, limiting assembly; 41, limiting column; 411, fixed block; 42, limiting rod; 5, auxiliary packaging assembly; 51, packaging plate; 52, guide rod; 6, supporting assembly; 61, supporting plate; 62, supporting rod; 63, fixed rod; 7, sealing assembly; 71, sealing plate; 72, sealing rod; 721, first fixed hook; 8, reinforcing assembly; 81, reinforcing plate; 82, reinforcing rod; 821, second fixed hook; 9, compression-resistant reinforcing plate; 91, compression-resistant reinforcing rib. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] An adhesive tape-free packaged environment-friendly carton, such as Figure 1 andFigure 2 As shown in the drawings, it comprises a carton enclosure 1, a plurality of carton cover plates 2 and packaging rods 3, the carton enclosure 1 is integrally formed with the plurality of carton cover plates 2, the carton cover plate 2 is provided with a cavity for the packaging rod 3 to rotate, and the packaging rod 3 is placed in the cavity.

[0037] As shown in the drawings, four packaging rods 3 are provided, one packaging rod 3 is provided on each carton cover plate 2, a semicircular cavity for the packaging rod 3 to rotate is provided on the carton cover plate 2, a rotating assembly 31 for rotating the packaging rod 3 is connected to one end of the packaging rod 3, the rotating assembly 31 comprises a rotating rod 311 and a knob 312, the rotating rod 311 is vertically fixedly connected to one end of the packaging rod 3 and penetrates through the carton cover plate 2, the knob 312 is cylindrical, the knob 312 is fixedly connected to one end of the rotating rod 311 away from the packaging rod 3, the bottom surface of the knob 312 abuts against the upper surface of the carton cover plate 2, and the circumferential surface of the knob 312 is sawtooth-shaped. Figure 2 Figure 3 In use, the knob 312 is manually rotated to drive the packaging rod 3 to rotate in the cavity, so that part of the packaging is in one carton cover plate 2 and part of the packaging is in another carton cover plate 2, and the carton cover plates 2 on the same side are connected together through the packaging rod 3 to package the carton.

[0038] As shown in the drawings, a limiting assembly 4 for limiting the packaging rod 3 is provided on the carton cover plate 2, the limiting assembly 4 comprises a limiting post 41 and a limiting rod 42, the limiting post 41 penetrates through the carton cover plate 2, the limiting post 41 is vertically arranged relative to the packaging rod 3, a fixed block 411 is fixedly connected to one end of the limiting post 41 close to the upper surface of the carton cover plate 2, the cross-sectional area of the fixed block 411 is larger than that of the limiting post 41, and the lower surface of the fixed block 411 abuts against the upper surface of the carton cover plate 2, the limiting rod 42 is fixedly connected to one end of the limiting post 41 away from the fixed block, and the limiting rod 42 is horizontally arranged, and a slot is provided on the carton cover plate 2 for the limiting rod 42 to pass through.

[0039] In use, the limiting post 41 is first lifted, when the packaging rod 3 is rotated to connect two carton cover plates 2, one side of the packaging rod 3 abuts against the inner wall of the carton cover plate 2, the fixed block 411 is pressed downward, the limiting rod 42 passes through the slot on the carton cover plate 2, and then the fixed block 411 is rotated again so that the upper surface of the limiting rod 42 abuts against the lower surface of the carton cover plate 2 to limit the packaging rod 3 and prevent the packaging rod 3 from moving when the carton is moved, thereby improving the packaging effect. Figure 3 As shown in the drawings, a limiting assembly 4 for limiting the packaging rod 3 is provided on the carton cover plate 2, the limiting assembly 4 comprises a limiting post 41 and a limiting rod 42, the limiting post 41 penetrates through the carton cover plate 2, the limiting post 41 is vertically arranged relative to the packaging rod 3, a fixed block 411 is fixedly connected to one end of the limiting post 41 close to the upper surface of the carton cover plate 2, the cross-sectional area of the fixed block 411 is larger than that of the limiting post 41, and the lower surface of the fixed block 411 abuts against the upper surface of the carton cover plate 2, the limiting rod 42 is fixedly connected to one end of the limiting post 41 away from the fixed block, and the limiting rod 42 is horizontally arranged, and a slot is provided on the carton cover plate 2 for the limiting rod 42 to pass through.

[0040] In use, the limiting post 41 is first lifted, when the packaging rod 3 is rotated to connect two carton cover plates 2, one side of the packaging rod 3 abuts against the inner wall of the carton cover plate 2, the fixed block 411 is pressed downward, the limiting rod 42 passes through the slot on the carton cover plate 2, and then the fixed block 411 is rotated again so that the upper surface of the limiting rod 42 abuts against the lower surface of the carton cover plate 2 to limit the packaging rod 3 and prevent the packaging rod 3 from moving when the carton is moved, thereby improving the packaging effect.

[0041] Figure 2 ​​As shown, the auxiliary sealing assembly 5 is arranged between the two sealing rods 3 on the carton cover plate 2, and the auxiliary sealing assembly 5 comprises a sealing plate 51 and a guide rod 52. The sealing plate 51 is horizontally arranged and is an oblong plate. A groove for placing the sealing plate 51 is formed in the carton cover plate 2, and the sealing plate 51 is placed in the groove. The guide rod 52 is fixedly connected to the top surface of the sealing plate 51 and is vertically arranged. The guide rod 52 penetrates the carton cover plate 2, and a guide groove 21 is formed in the carton cover plate 2. The length direction of the guide groove 21 is parallel to the width direction of the carton cover plate 2.

[0042] In use, the guide rod 52 is pushed to drive the sealing plate 51 to move in the guide groove 21 towards the other carton cover plate 2. The sealing plate 51 is arranged between the two carton cover plates 2 to seal the space between the two sealing rods 3.

[0043] As shown in the drawings, Figure 4 A support assembly 6 is arranged between the carton cover plate 2 and the carton surrounding plate 1 at the bottom to support the angle between the carton cover plate 2 and the carton surrounding plate 1 to be 90°. The support assembly 6 is arranged at the connection between the carton surrounding plate 1 and the carton cover plate 2. The support assembly 6 comprises a support plate 61, a support rod 62, and a plurality of fixing rods 63 for fixing the support plate 61 and the support rod 62. Each support assembly 6 comprises two support plates 61. One support plate 61 is fixedly connected to the inner wall of the carton surrounding plate 1, and the other support plate 61 is fixedly connected to the carton cover plate 2. The two support plates 61 abut each other. A sliding groove is formed in the support plate 61 for the sliding of the support rod 62. One end of the support rod 62 is placed on the support plate 61 of the carton cover plate 2, and the other end is placed on the support plate 61 of the carton surrounding plate 1.

[0044] As shown in the drawings, Figure 4 The fixing rod 63 is arranged on the support plate 61 to fix the support rod 62 and the support plate 61 together. Two fixing rods 63 are arranged on the support plate 61. Screws are arranged on the fixing rods 63. The fixing rods 63 penetrate the support plate 61 and the support rod 62, and the screws are used to tighten the fixing rods 63 to fix the support plate 61 and the support rod 62 together. When the fixing rods 63 are inserted into the support plate 61 and the support rod 62, the support rod 62 and the two support plates 61 form a triangle. In use, the carton cover plate 2 at the bottom is bent to be horizontal. The support rod 62 is slid to form a right-angled triangle between the support rod 62 and the two support plates 61. Then, the fixing rods 63 are inserted into the support plate 61 and the support rod 62 to fix them.

[0045] As shown in the drawings, Figure 2As shown, the sealing assembly 7 is arranged between the carton cover plate 2 and the carton surrounding plate 1, and serves to consolidate the sealing. The sealing assembly 7 is arranged in four groups, two groups are arranged on the top surface and the bottom surface of the carton surrounding plate 1. The sealing assembly 7 comprises a sealing plate 71 and a plurality of sealing rods 72. The sealing plate 71 is an L-shaped plate. The sealing plate 71 is buckled at the bending portion of the carton cover plate 2 and the carton surrounding plate 1, and covers the gap between the two carton cover plates 2. The sealing rod 72 is arranged in four groups. Two sealing rods 72 are arranged on the sealing plate 71 on the carton cover plate 2, and the other two sealing rods 72 are arranged on the sealing plate 71 on the carton surrounding plate 1. The sealing rod 72 on the carton cover plate 2 penetrates through the sealing plate 71 and the carton cover plate 2. First fixing hooks 721 are fixedly connected to the top end and the bottom end of the sealing rod 72. The first fixing hooks 721 are arranged perpendicularly to the sealing rod 72. The first fixing hook 721 at the top end of the sealing rod 72 abuts against the top surface of the sealing plate 71. The first fixing hook 721 at the bottom end of the sealing rod 72 abuts against the lower surface of the carton cover plate 2.

[0046] As shown in the Figure 2 , the sealing rod 72 on the carton surrounding plate 1 penetrates through the sealing plate 71 and the carton surrounding plate 1. First fixing hooks 721 are fixedly connected to the two ends of the sealing rod 72. The first fixing hook 721 away from the inside of the carton abuts against the top surface of the sealing plate 71. The first fixing hook 721 close to the inside of the carton abuts against the inner wall of the carton surrounding plate 1. Grooves are formed in the sealing plate 71, the carton cover plate 2 and the carton surrounding plate 1 for the first fixing hooks 721 to pass through. In use, the sealing plate 71 is buckled at the connection between the carton cover plate 2 and the carton surrounding plate 1. The sealing plate 71 covers the gap between the two carton cover plates 2. Then the sealing rod 72 is inserted into the grooves formed in the sealing plate 71, the carton cover plate 2 and the carton surrounding plate 1, so as to fix the sealing plate 71.

[0047] As shown in the Figure 2 , the reinforcing assembly 8 is arranged at the bending portion of the carton surrounding plate 1, and serves to reinforce the connection of the bending portion of the carton surrounding plate 1. The reinforcing assembly 8 is arranged in four groups. The reinforcing assembly 8 comprises a reinforcing plate 81 and a reinforcing rod 82. The reinforcing plate 81 is an L-shaped plate. The reinforcing plate 81 is buckled at the bending portion of the carton surrounding plate 1. The reinforcing rod 82 is arranged in four groups. Two reinforcing rods 82 are arranged on one side of the reinforcing plate 81, and the other two reinforcing rods 82 are arranged on the other side of the reinforcing plate 81. The reinforcing rod 82 penetrates through the reinforcing plate 81 and the carton surrounding plate 1. Second fixing hooks 821 are fixedly connected to the two ends of the reinforcing rod 82. The second fixing hooks 821 are arranged perpendicularly to the reinforcing rod 82. Grooves are formed in the reinforcing plate 81 and the carton surrounding plate 1 for the second fixing hooks 821 to pass through. In use, the reinforcing plate 81 is buckled at the bending portion of the carton surrounding plate 1. The second fixing hooks 821 and the reinforcing rod 82 penetrate through the reinforcing plate 81 and the carton surrounding plate 1, so as to fix the reinforcing plate 81 and the carton surrounding plate 1.

[0048] As shown in the Figure 5As shown, the compression-resistant reinforcing plate 9 is fixedly connected inside the carton panel 1, the compression-resistant reinforcing plate 9 is in a wave shape, the compression-resistant reinforcing plate 9 and the surfaces of the carton panel 1 on both sides form a stable triangular cavity, and the compression-resistant reinforcing rib 91 is fixedly connected in the triangular cavity, and the circumferential surface of the compression-resistant reinforcing rib 91 abuts against the compression-resistant reinforcing plate 9 and the carton panel 1.

[0049] The use process of the present application is as follows: first, the bottom surface of the carton panel 1 is packaged by using the packaging rod 3, the guide rod 52 is pushed, the packaging plate 51 is used to package the remaining position, then the reinforcing plate 81 is buckled on the carton panel 1 and the bottom surface of the carton cover plate 2, the reinforcing rod 82 is inserted into the reinforcing plate 81 and the carton panel 1 to reinforce the carton panel 1, and the carton cover plate 2 on the top surface of the carton panel 1 is packaged and reinforced, and the above steps are repeated; the arrangement of the compression-resistant reinforcing plate 9 and the compression-resistant reinforcing rib 91 improves the compression-resistant and deformation-resistant characteristics of the carton and improves the reusability of the carton.

[0050] The embodiments of the specific embodiment are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An environmentally friendly tape-free packaging carton comprising a carton enclosure panel (1) and a plurality of carton cover panels (2) integrally formed with the carton enclosure panel (1), characterized in that: Cavities are formed on opposite sides of the two carton cover plates (2), a plurality of rotatable packaging rods (3) are connected in the cavities, a limiting assembly (4) for limiting rotation of the packaging rods (3) when the packaging rods (3) are connected to the two carton cover plates (2) is arranged on the carton cover plate (2), the limiting assembly (4) comprises a limiting post (41) and a limiting rod (42), the limiting post (41) penetrates through the carton cover plate (2) and is in sliding connection with the carton cover plate (2), the limiting rod (42) is fixedly connected to the bottom end of the limiting post (41), in use, the limiting post (41) is first lifted, when the packaging rod (3) is rotated to be connected to the two carton cover plates (2), one side of the packaging rod (3) abuts against the inner wall of the carton cover plate (2), the fixing block (411) at the top end of the limiting post (41) is pressed downward, the limiting rod (42) penetrates through the slot on the carton cover plate (2), and then the fixing block (411) is rotated, so that the upper surface of the limiting rod (42) abuts against the lower surface of the carton cover plate (2), and the packaging rod (3) is limited; An auxiliary packaging assembly (5) for packaging the carton cover plate (2) is arranged between the plurality of packaging rods (3), the auxiliary packaging assembly (5) comprises a packaging plate (51) and a guide rod (52), the packaging plate (51) is placed in the cavity and can slide in the cavity, and the guide rod (52) is fixedly connected to the upper surface of the packaging plate (51); a guide groove (21) for the guide rod (52) to slide is formed on the carton cover plate (2); A rotating assembly (31) is connected to the packaging rod (3), the rotating assembly comprises a rotating rod (311) and a knob (312), the rotating rod (311) is fixedly connected to the side of the packaging rod (3) away from the limiting assembly (4), the rotating rod (311) penetrates through the upper surface of the carton cover plate (2), and the knob (312) is fixedly connected to the top end of the rotating rod (311); and one side of the knob (312) is sawtooth-shaped; A supporting assembly (6) is arranged between the carton surrounding plate (1) and the carton cover plate (2) on the bottom surface, the supporting assembly (6) comprises two supporting plates (61), a supporting rod (62) and a fixing member, the two supporting plates (61) are fixedly connected to the inner walls of the carton surrounding plate (1) and the carton cover plate (2) respectively, the two supporting plates (61) abut against each other, the supporting rod (62) is in sliding connection with the two supporting plates (61), and the fixing member for fixing the supporting plates (61) and the supporting rod (62) is arranged between the supporting plates (61) and the supporting rod (62); A sealing assembly (7) is arranged between the carton cover plate (2) and the carton surrounding plate (1) to consolidate the package, the sealing assembly (7) comprises a sealing plate (71) and a plurality of sealing fasteners, the sealing plate (71) is arranged at the joint between the two carton cover plates (2), and the plurality of sealing fasteners are respectively arranged through and fixed to the sealing plate (71), the carton cover plate (2) and the sealing plate (71) and the carton surrounding plate (1); A reinforcing assembly (8) is arranged at the bending part of the carton surrounding plate (1), the reinforcing assembly (8) comprises a reinforcing plate (81) and a plurality of reinforcing members, the reinforcing plate (81) is arranged at the bending part of the carton surrounding plate (1), and the reinforcing members are arranged through and fixed to the reinforcing plate (81) and the carton surrounding plate (1); A compression-resistant reinforcing plate (9) is fixedly connected in the carton surrounding plate (1), and a compression-resistant reinforcing rib (91) is fixedly connected between the reinforcing plate (9) and the carton surrounding plate (1).

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