CN217436303U

CN217436303U - Regular polygon world box

Info

Publication number: CN217436303U
Application number: CN202221227110.8U
Authority: CN
Inventors: 廖晓波
Original assignee: Dongguan Jiayaoxing Packaging Product Co ltd
Current assignee: Dongguan Jiayaoxing Packaging Product Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-16
Anticipated expiration: 2032-05-20

Abstract

The utility model belongs to the technical field of the packing carton technique and specifically relates to indicate an equilateral polygon day ground box, box and equilateral polygon day lid at the bottom of the equilateral polygon, the equilateral polygon day lid is formed by a slice day lid folding profiled sheet is folding, day lid folding profiled sheet includes equilateral polygon surrounding edge shaping subassembly and equilateral polygon top cap shaping subassembly, the top surface of equilateral polygon top cap shaping subassembly is equipped with a plurality of shaping cambered surfaces and a plurality of depressed parts, a plurality of shaping cambered surfaces and a plurality of depressed part intervals set up and be the distribution of annular array around the central axis of equilateral polygon top cap shaping subassembly, the depressed part forms the stiffening rib from the inside folding of top surface of equilateral polygon top cap shaping subassembly and at the inner chamber of equilateral polygon top cap shaping subassembly. The utility model discloses form similar flower pattern after the shaping, novel structure, the appearance is pleasing to the eye, and regular polygon sky lid adopts a slice formula panel structure, and the dismouting is convenient, can open up the flat completely, and the storage space has been saved to transportation and packing etc. of being convenient for, has reduced the cost of transportation and packing etc..

Description

Regular polygon world box

Technical Field

The utility model belongs to the technical field of the packing carton technique and specifically relates to indicate a regular polygon day ground box.

Background

Various products need to be packaged before being sold, and paper packaging is one of the more important packaging modes in product packaging and has great demand. Wherein, the world box is a packaging structure in the paper packing. The top and bottom box is mainly composed of a top cover and a bottom box, and the top cover is covered on the bottom box. The simple structure of day ground box, it is convenient to use, is liked by people widely, but because present day ground box can't be flat completely, so lead to inconvenient such as transportation, storage, accomodate, improved cost of transportation, and the structure of current day ground box is ordinary, is difficult to attract consumer's eyeball. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a regular polygon sky ground box.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an equilateral polygon sky ground box, it includes the equilateral polygon sky lid at the bottom of the box and the lid fits the equilateral polygon sky lid of the box at the bottom of the equilateral polygon, the equilateral polygon sky lid is formed by folding a slice sky lid folding profiled sheet, it covers folding profiled sheet and includes equilateral polygon surrounding edge shaping subassembly and equilateral polygon top cap shaping subassembly, the open end of box at the bottom of the equilateral polygon is located to equilateral polygon surrounding edge shaping subassembly cover, the top surface of equilateral polygon top cap shaping subassembly is provided with a plurality of shaping cambered surfaces and a plurality of depressed parts, every shaping cambered surface corresponds a side of equilateral polygon top cap shaping subassembly, a plurality of shaping cambered surfaces and a plurality of depressed parts interval set up and are the annular array distribution around the central axis of equilateral polygon top cap shaping subassembly, the depressed part forms and forms the stiffening rib at the inner chamber of equilateral polygon top cap shaping subassembly from the inside folding of the top surface of regular polygon top cap shaping subassembly.

Further, the regular polygon surrounding edge forming assembly comprises a surrounding edge connecting plate and n surrounding edge folding plates which are connected by sequential folding marks, the regular polygon top cover forming assembly comprises a top cover connecting plate, a full top cover folding plate and (n-1) half top cover folding plates which are connected by sequential folding marks, wherein n is more than or equal to 4, and n is an even number, the half top cover folding plates comprise half top cover main plates and two triangular plates which are symmetrically arranged at two side edges of the half top cover main plates, the triangular plates are connected with the half top cover main plate folding marks by circular arc lines, the bottom edge of each half top cover main plate is connected with one surrounding edge folding plate folding mark, the full top cover folding plates comprise full top cover main plates and two circular arc plates which are symmetrically arranged at two side edges of the full top cover main plates, the circular arc edges of the circular arc plates are connected with one side edge of the full top cover main plates, the full top cover main plates comprise two symmetrical and integrally connected half top cover main plates, the circular arc plates comprise two symmetrical and integrally connected triangular plates, the bottom edge of the full top cover main board is connected with a folded plate crease of the surrounding edge, the folded plate crease of the top edge of the full top cover main board is connected with a buckling plate, and a buckling slot is arranged between the bottom edge of the half top cover main board of the (n/2) th half top cover folded plate and the corresponding folded plate crease of the surrounding edge; in two adjacent half top cover folding plates, the side edge of a triangular plate of one half top cover folding plate is connected with the side edge crease of a triangular plate of the other half top cover folding plate; the side edge of the other triangular plate of the last half top cover folded plate is connected with the straight edge crease of one circular arc plate, and the side edge of the other triangular plate of the first half top cover folded plate or the straight edge of the other circular arc plate is connected with the crease of the top cover connecting plate; the surrounding edge connecting plate is connected with the crease of the first or the last surrounding edge folded plate; after the regular polygon surrounding edge forming assembly is folded and formed, the first surrounding edge folded plate is connected with the last surrounding edge folded plate in an adhesive mode through the surrounding edge connecting plate; after regular polygon top cap shaping subassembly folding forming, another set-square of first half top cap folded plate is via top cap connecting plate and another circular arc board adhesive connection, all half top cap mainboards form the shaping cambered surface, the topside of all half top cap mainboards assembles towards regular polygon top cap shaping subassembly's central point each other, two circular arc boards and all set-squares fold down in order to form a plurality of depressed parts, half top cap mainboard of full top cap mainboard and the half top cap mainboard coincidence of (n/2) th half top cap folded plate are together stacked together, insert the buckle board and insert the catching groove lock.

Furthermore, the regular polygon bottom box is formed by folding a bottom box folding forming plate.

Furthermore, the bottom box folding shaping plate comprises a regular polygon box bottom shaping assembly and a regular polygon box body shaping assembly connected with the regular polygon box bottom shaping assembly in a folding manner; the molded regular polygon box bottom molding component and the regular polygon box body molding component are enclosed into a cavity; the regular polygon surrounding edge forming component covers the opening end of the regular polygon box body forming component.

Furthermore, regular polygon box body forming assembly includes n box body boards and a box body connecting plate that crease connects in proper order, and n is greater than or equal to 4, and n is the even number, and box body connecting plate is used for being connected first box body board and last box body board adhesive bonding, and box body connecting plate is connected with first or last box body board crease.

Furthermore, the regular polygon box body forming assembly also comprises n box body reinforcing plates which are sequentially connected by creases, and the bottom edge of one box body reinforcing plate is connected with the creases of the top edge of one box body plate; after the regular polygon box body forming assembly is formed, a box body reinforcing plate and a box body plate are folded in half, the box body reinforcing plate is located in the cavity, and the box body connecting plate is clamped between the box body reinforcing plate and the box body plate.

Furthermore, the regular polygon box bottom forming assembly comprises a bottom buckle plate, a first lower folded wing plate, a first upper folded wing plate, a bottom clamping plate, a second upper folded wing plate and a second lower folded wing plate which are sequentially arranged and respectively connected with the bottom edge creases of the n box body plates; after the regular polygon box bottom forming assembly is formed, the first upward folding wing plate and the first downward folding wing plate are respectively overlapped with the upper side and the lower side of one end of the bottom clamping plate, the second upward folding wing plate and the second downward folding wing plate are respectively overlapped with the upper side and the lower side of the other end of the bottom clamping plate, the bottom clamping plate is inserted and buckled between the bottom clamping plate and the first downward folding wing plate, the lower side of the first downward folding wing plate and the lower side of the second downward folding wing plate are respectively overlapped with the upper side of the bottom clamping plate, and the lower side of the bottom clamping plate is overlapped with the upper side of the bottom clamping plate.

The utility model has the advantages that: the utility model provides a regular polygon sky ground box, it includes the regular polygon sky lid that box and lid fit the regular polygon end box at the bottom of the regular polygon, box and regular polygon sky lid all adopt the stereoplasm cardboard at the bottom of the regular polygon, regular polygon sky lid is formed by a slice sky lid folding profiled sheet is folding, sky lid folding profiled sheet includes regular polygon surrounding edge shaping subassembly and regular polygon top cap shaping subassembly, regular polygon surrounding edge shaping subassembly cover is located outside the open end of box at the bottom of the regular polygon, regular polygon top cap shaping subassembly's top surface is provided with a plurality of shaping cambered surfaces and a plurality of depressed parts, every shaping cambered surface corresponds a side of regular polygon top cap shaping subassembly, a plurality of shaping cambered surfaces and a plurality of depressed parts interval set up and be annular array distribution around the central axis of regular polygon top cap shaping subassembly, the depressed part is inwards folded from regular polygon top cap shaping subassembly's top surface and forms the stiffening rib at regular polygon top cap shaping subassembly's inner chamber. The utility model discloses a plurality of shaping cambered surfaces and a plurality of depressed parts equidistant ground interval distribution are in order to form similar flower pattern, novel structure, the appearance is pleasing to the eye, attract consumer's eyeball easily, regular polygon canopy adopts a piece formula panel structure, not only be convenient for fold forming and dismantlement, can also open up the flat completely, be convenient for transport and packing etc. have saved storage space, the cost of transportation and packing etc. has been reduced, and the stiffening rib has strengthened the intensity and the hardness of regular polygon canopy, be difficult to warp during the pressurized.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic view of the exploded structure of the present invention.

Fig. 3 is a schematic structural view of the folding and forming plate of the canopy of the present invention in a completely flattened state.

Fig. 4 is a schematic structural view of the bottom case folding-forming plate of the present invention in a completely flattened state.

Description of reference numerals:

1. a regular polygonal bottom box; 2. a regular polygon canopy; 3. folding the top cover into a plate; 31. a regular polygon surrounding edge forming component; 311. a surrounding edge connecting plate; 312. folding the surrounding edge; 313. folding plates are folded; 32. a regular polygonal top cover forming assembly; 321. a top cover connecting plate; 322. folding the full top cover; 323. half top cover folding plates; 324. a half header main board; 325. a set square; 326. a full top cover main board; 327. a circular arc plate; 328. a buckle plate; 329. a buckle slot; 4. forming a cambered surface; 5. a recessed portion; 6. reinforcing ribs; 7. folding the bottom box into a plate; 71. a regular polygonal box bottom forming component; 711. a bottom gusset plate; 712. a first lower flap panel; 713. a first upper flap panel; 714. a bottom clamping plate; 715. a second upper flap plate; 716. a second lower flap panel; 72. a regular polygon box body forming component; 721. a box body plate; 722. a box body connecting plate; 723. a box body reinforcing plate; 73. a cavity.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in figures 1 to 4, the utility model provides an equilateral polygon ceiling box, it includes the equilateral polygon bottom box 1 and the equilateral polygon ceiling 2 covering the equilateral polygon bottom box 1, the equilateral polygon bottom box 1 and the equilateral polygon ceiling 2 both adopt hard cardboard, the equilateral polygon ceiling 2 is formed by folding a ceiling folding template 3, the ceiling folding template 3 includes the equilateral polygon edge forming component 31 and the equilateral polygon top cover forming component 32, the equilateral polygon edge forming component 31 is sleeved outside the opening end of the equilateral polygon bottom box 1, the top surface of the equilateral polygon top cover forming component 32 is provided with a plurality of forming cambered surfaces 4 and a plurality of depressed parts 5, each forming cambered surface 4 corresponds to one side of the equilateral polygon top cover forming component 32, the plurality of forming cambered surfaces 4 and the plurality of depressed parts 5 are arranged at intervals and distributed in an annular array around the central axis of the equilateral polygon top cover forming component 32, the depressions 5 are folded inward from the top surface of the regular polygon top cover molding assembly 32 and form reinforcing ribs 6 in the inner cavity of the regular polygon top cover molding assembly 32. The utility model discloses a spacing ground interval distribution is in order to form similar flower pattern with a plurality of depressed parts 5 to a plurality of shaping cambered surfaces 4, novel structure, the appearance is pleasing to the eye, attract consumer's eyeball easily, regular polygon canopy 2 adopts a piece formula panel structure, not only be convenient for fold forming and dismantlement, can also open up the flat completely, be convenient for transportation and packing etc. have saved storage space, the cost of transportation and packing etc. has been reduced, and stiffening rib 6 has strengthened regular polygon canopy 2's intensity and hardness, be difficult to warp during the pressurized.

In this embodiment, the regular polygon surrounding edge forming assembly 31 includes a surrounding edge connecting plate 311 and n surrounding edge folding plates 312 connected by sequential folding, the regular polygon top cover forming assembly 32 includes a top cover connecting plate 321, a full top cover folding plate 322 and (n-1) half top cover folding plates 323 connected by sequential folding, n is greater than or equal to 4, and n is an even number, the half top cover folding plate 323 includes a half top cover main plate 324 and two triangular plates 325 symmetrically disposed at two side edges of the half top cover main plate 324, the triangular plates 325 are connected with the half top cover main plate 324 by circular arc lines, the bottom edge of each half top cover main plate 324 is connected with a surrounding edge folding plate 312 folding line, the full top cover folding plate 322 includes a full top cover main plate 326 and two circular arc plates 327 symmetrically disposed at two side edges of the full top cover main plate 326, the circular arc edge of the circular arc plate 327 is connected with a side edge folding line of the full top cover main plate 326, the full top cover main plate 326 includes two symmetrical and integrally connected half top cover main plates 324, the circular arc plate 327 comprises two symmetrical and integrally connected triangular plates 325, the bottom edge of the full top cover main plate 326 is connected with the crease of one surrounding edge folded plate 312, the crease of the top edge of the full top cover main plate 326 is connected with a buckling plate 328, and a buckling groove 329 is arranged between the bottom edge of the half top cover main plate 324 of the (n/2) th half top cover folded plate 323 and the corresponding surrounding edge folded plate 312; in adjacent half top flap panels 323, the side edges of one gusset plate 325 of one half top flap panel 323 are creased to the side edges of one gusset plate 325 of the other half top flap panel 323; the side edge of the other triangular plate 325 of the last half top cover folded plate 323 is connected with the straight edge crease of one circular arc plate 327, and the side edge of the other triangular plate 325 of the first half top cover folded plate 323 or the straight edge of the other circular arc plate 327 is connected with the top cover connecting plate 321 through crease; the skirt web 311 is creased with the first or last skirt flap 312; after the regular polygon surrounding edge forming assembly 31 is folded and formed, the first surrounding edge folding plate 312 is connected with the last surrounding edge folding plate 312 in an adhesive way through the surrounding edge connecting plate 311; after the regular polygonal top cover forming assembly 32 is folded and formed, the other triangular plate 325 of the first half top cover folded plate 323 is connected with the other circular arc plate 327 through the top cover connecting plate 321 in an adhesive manner, all the half top cover main plates 324 form a forming arc surface 4, the top edges of all the half top cover main plates 324 converge towards the central point of the regular polygonal top cover forming assembly 32, the two circular arc plates 327 and all the triangular plates 325 are folded downwards to form a plurality of concave parts 5, one half top cover main plate 324 of the full top cover main plate 326 and the half top cover main plate 324 of the (n/2) th half top cover folded plate 323 are overlapped and stacked together, and the inserting and buckling plate 328 is buckled with the inserting and buckling groove 329. This structural design, the regular polygon sky lid 2 that the folding profiled sheeting 3 of a slice sky lid of being convenient for folded into spatial structure, the stereoeffect is good, and the appearance is pleasing to the eye, and the dismouting is convenient.

Specifically, each containment flap 312 is folded in half by two pairs of flaps 313; this structural design has increased the intensity and the hardness after the surrounding edge folded plate 312 shaping, is difficult to warp when the pressurized.

In this embodiment, the regular polygon bottom box 1 is formed by folding a bottom box folding forming plate 7, and the bottom box folding forming plate 7 includes a regular polygon box bottom forming assembly 71 and a regular polygon box body forming assembly 72 connected with the regular polygon box bottom forming assembly 71 through creases; a cavity 73 is defined by the molded regular polygon box bottom molding component 71 and the molded regular polygon box body molding component 72; the regular polygon surrounding edge forming component 31 covers the opening end of the regular polygon box body forming component 72; the regular polygon bottom box 1 is made of one-piece plates, so that the regular polygon bottom box is convenient to fold, form and disassemble, can be completely flattened, is convenient to transport and package, saves storage space, and reduces the cost of transport, package and the like.

In this embodiment, the regular polygon box body forming assembly 72 includes n box body plates 721 and a box body connecting plate 722 connected in sequence by folds, n is greater than or equal to 4, and n is an even number, the box body connecting plate 722 is used for adhesively connecting the first box body plate 721 with the last box body plate 721, and the box body connecting plate 722 is connected with the first or the last box body plate 721 by folds. This structural design, the fold forming and the dismantlement of regular polygon box body shaping subassembly 72 of being convenient for, and glue box body 721 head and the tail together through box body connecting plate 722, improved the structural stability after regular polygon box body shaping subassembly 72 shaping.

In this embodiment, the regular polygon box body forming assembly 72 further includes n box body reinforcing plates 723 connected by creases in sequence, and the bottom edge of one box body reinforcing plate 723 is connected with the top edge crease of one box body plate 721; after the regular polygonal box body forming component 72 is formed, a box body reinforcing plate 723 and a box body plate 721 are folded in half, the box body reinforcing plate 723 is located in the cavity 73, and the box body connecting plate 722 is clamped between the box body reinforcing plate 723 and the box body plate 721. By adding the box body reinforcing plate 723, the strength and hardness of the molded regular polygonal box body molding assembly 72 are improved, and the regular polygonal box body molding assembly is not easy to deform under pressure.

In this embodiment, the regular polygon box bottom forming assembly 71 includes a bottom buckle plate 711, a first lower flap plate 712, a first upper flap plate 713, a bottom clamp plate 714, a second upper flap plate 715, and a second lower flap plate 716 sequentially arranged and respectively connected to bottom edge creases of the n box body plates 721; after the regular polygonal box bottom forming assembly 71 is formed, the first upper flap plate 713 and the first lower flap plate 712 are respectively overlapped with the upper side surface and the lower side surface of one end of the bottom clamping plate 714, the second upper flap plate 715 and the second lower flap plate 716 are respectively overlapped with the upper side surface and the lower side surface of the other end of the bottom clamping plate 714, the bottom fastening plate 711 is inserted and buckled among the bottom clamping plate 714, the first lower flap plate 712 and the second lower flap plate 716, the lower side surface of the first lower flap plate 712 and the lower side surface of the second lower flap plate 716 are respectively overlapped with the upper side surface of the bottom fastening plate 711, and the lower side surface of the bottom fastening plate 711 is overlapped with the upper side surface of the bottom clamping plate 714. This structural design for box 1's at the bottom of regular polygon box shaping subassembly 71 utilization mode formation bottom of detaining, the dismouting is convenient, easy operation, and the fastness is good.

The above-mentioned embodiment does the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

Claims

1. The utility model provides a regular polygon heaven and earth box which characterized in that: box and lid fit the regular polygon sky lid of box at the bottom of the regular polygon including regular polygon, regular polygon sky lid is formed by a slice sky lid folding profiled sheet is folding, sky lid folding profiled sheet includes regular polygon edge shaping subassembly and regular polygon top cap shaping subassembly, regular polygon edge shaping subassembly cover is located outside the open end of box at the bottom of the regular polygon, regular polygon top cap shaping subassembly's top surface is provided with a plurality of shaping cambered surfaces and a plurality of depressed parts, every shaping cambered surface corresponds a side of regular polygon top cap shaping subassembly, a plurality of shaping cambered surfaces and a plurality of depressed parts interval set up and be annular array distribution around the central axis of regular polygon top cap shaping subassembly, the depressed part forms and forms the stiffening rib at the inner chamber of regular polygon top cap shaping subassembly from regular polygon top cap shaping subassembly's top surface inward folding.

2. A regular polygonal space and ground box according to claim 1, wherein: the regular polygon surrounding edge forming assembly comprises a surrounding edge connecting plate and n surrounding edge folded plates which are sequentially connected by creases, the regular polygon top cover forming assembly comprises a top cover connecting plate, a full top cover folded plate and (n-1) half top cover folded plates which are sequentially connected by the creases, wherein n is more than or equal to 4, and n is even number, the half top cover folded plate comprises a half top cover main plate and two triangular plates which are symmetrically arranged at two side edges of the half top cover main plate, the triangular plates are connected with the creases of the half top cover main plate through arc lines, the bottom edge of each half top cover main plate is connected with the creases of the surrounding edge folded plate, the full top cover folded plate comprises a full top cover main plate and two arc plates which are symmetrically arranged at two side edges of the full top cover main plate, the arc edges of the arc plates are connected with the creases of one side edge of the full top cover main plate, the full top cover main plate comprises two symmetrical and integrally connected half top cover main plates, the arc plates comprise two symmetrical and integrally connected triangular plates, the bottom edge of the full top cover main board is connected with a folded plate crease of the surrounding edge, the folded plate crease of the top edge of the full top cover main board is connected with a buckling plate, and a buckling slot is arranged between the bottom edge of the half top cover main board of the (n/2) th half top cover folded plate and the corresponding folded plate crease of the surrounding edge; in two adjacent half top cover folding plates, the side edge of a triangular plate of one half top cover folding plate is connected with the side edge crease of a triangular plate of the other half top cover folding plate; the side edge of the other triangle of the last half top cover folded plate is connected with the straight edge crease of one circular arc plate; the surrounding edge connecting plate is connected with the crease of the first or the last surrounding edge folded plate; after the regular polygon surrounding edge forming assembly is folded and formed, the first surrounding edge folded plate is connected with the last surrounding edge folded plate in an adhesive mode through the surrounding edge connecting plate; after regular polygon top cap shaping subassembly folding forming, another set-square of first half top cap folded plate is via top cap connecting plate and another circular arc board adhesive connection, all half top cap mainboards form the shaping cambered surface, the topside of all half top cap mainboards assembles towards regular polygon top cap shaping subassembly's central point each other, two circular arc boards and all set-squares fold down in order to form a plurality of depressed parts, half top cap mainboard of full top cap mainboard and the half top cap mainboard coincidence of (n/2) th half top cap folded plate are together stacked together, insert the buckle board and insert the catching groove lock.

3. A regular polygonal space and ground box according to claim 1, wherein: the regular polygon bottom box is formed by folding a bottom box folding forming plate.

4. A regular polygonal space and ground box according to claim 3, wherein: the bottom box folding shaping plate comprises a regular polygon box bottom shaping component and a regular polygon box body shaping component connected with the regular polygon box bottom shaping component in a folding manner; the molded regular polygon box bottom molding component and the regular polygon box body molding component are enclosed into a cavity; the regular polygon surrounding edge forming component covers the opening end of the regular polygon box body forming component.

5. A regular polygonal heaven and earth box according to claim 4, wherein: the regular polygon box body forming assembly comprises n box body plates and a box body connecting plate, wherein the box body plates are sequentially connected through creases, n is larger than or equal to 4 and is an even number, the box body connecting plate is used for enabling the first box body plate to be in adhesive connection with the last box body plate, and the box body connecting plate is connected with the first box body plate or the last box body plate through the creases.

6. A regular polygonal space and ground box according to claim 5, wherein: the regular polygon box body forming assembly also comprises n box body reinforcing plates which are connected by creases in sequence, and the bottom edge of one box body reinforcing plate is connected with the creases of the top edge of one box body plate; after the regular polygon box body forming assembly is formed, a box body reinforcing plate and a box body plate are folded in half, the box body reinforcing plate is located in the cavity, and the box body connecting plate is clamped between the box body reinforcing plate and the box body plate.

7. A regular polygonal space and ground box according to claim 5, wherein: the regular polygon box bottom forming assembly comprises bottom buckle plates, first lower folded wing plates, first upper folded wing plates, bottom clamp plates, second upper folded wing plates and second lower folded wing plates which are sequentially arranged and respectively connected with bottom side creases of the n box body plates; after the regular polygon box bottom forming assembly is formed, the first upward folding wing plate and the first downward folding wing plate are respectively overlapped with the upper side and the lower side of one end of the bottom clamping plate, the second upward folding wing plate and the second downward folding wing plate are respectively overlapped with the upper side and the lower side of the other end of the bottom clamping plate, the bottom clamping plate is inserted and buckled between the bottom clamping plate and the first downward folding wing plate, the lower side of the first downward folding wing plate and the lower side of the second downward folding wing plate are respectively overlapped with the upper side of the bottom clamping plate, and the lower side of the bottom clamping plate is overlapped with the upper side of the bottom clamping plate.