CN211365299U - Cutting piece with four-corner column reinforced - Google Patents

Abstract

The utility model discloses a cutting piece reinforced by four corner columns, which comprises a bottom plate, wherein a pair of opposite sides of the bottom plate are respectively connected with a panel, the other pair of opposite sides are respectively connected with a side plate, both sides of the panel are respectively connected with a reinforcing plate, four reinforcing plates are symmetrically distributed about the center of the bottom plate, a first folded edge, a second folded edge and a third folded edge are arranged on the reinforcing plate from one side close to the panel outwards, the first folded edge, the second folded edge and the third folded edge divide the reinforcing plate from one side close to the panel outwards into a first folded plate, a second folded plate, a third folded plate and a fourth folded plate, the connecting edges of the reinforcing plate and the panel are parallel to the first folded edge, the second folded edge and the third folded edge, the panel and the third folded plate are connected by a fixed structure, the compression strength of a carton formed after folding is high, the direct folding molding has simple process.

Description

Cutting piece with four-corner column reinforced

Technical Field

The utility model belongs to the technical field of the carton packing and specifically relates to a cut-parts that four corners corner post was strengthened is related to.

Background

Packaging cartons and paper trays are very common in daily life and production, most commonly rectangular corrugated paper cartons. The carton or the tray can protect the packaged articles in the transportation process, and many times, the articles need to be stacked and placed in order to save space in the process of storage or transportation, and in order to prevent the articles from being damaged, the carton or the paper tray is required to have better compressive strength and supporting performance so as to ensure the supporting performance of the carton or the paper tray. In order to have good compressive strength and support performance, most of cartons or paper trays are added with reinforcing columns and other modes to increase the compressive strength of the cartons or the paper trays, but the additional reinforcing columns have the risk of falling off, the strength of the fallen cartons is affected, and the additional reinforcing columns are required to be added to the cartons after the cartons are folded and formed, so that the cartons are more complicated to manufacture.

Chinese patent application publication No. CN208102575U, entitled corrugated cardboard box, having an announcement date of 2018, 11 and 16, entitled "corrugated cardboard box", discloses a corrugated cardboard box, which includes a box cover made of corrugated paper, and a base made of corrugated paper, wherein the box cover and the base are matched with each other, the box cover includes a cover top and a cover wall, reinforcing columns are arranged at the connection positions where the cover walls are two-by-two adjacent, the reinforcing columns are fixed with the cover walls at both sides, and wrap angles are further arranged at the cover top. The utility model discloses a through install the reinforcing column additional and directly strengthened the vertical stress structure of corrugated sheet carton, but its method through setting up the reinforcing column at two liang of adjacent junctions of geyser has the risk that drops, and installs the process that the reinforcing column made the carton preparation more loaded down with trivial details additional.

Disclosure of Invention

The utility model discloses an it is poor to overcome prior art carton compressive strength, installs additional and strengthens the post and have the risk of droing and make loaded down with trivial details not enough, provides a packing cut-parts that triangle broadside was strengthened, and the carton compressive strength who forms after folding is high, direct folding forming, and the process is simple.

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

a cutting piece reinforced by four-corner columns comprises a bottom plate, wherein a pair of opposite sides of the bottom plate are respectively connected with a panel, the other pair of opposite sides of the bottom plate are respectively connected with a side plate, two sides of the panel are respectively connected with a reinforcing plate, four reinforcing plates are symmetrically distributed about the center of the bottom plate, a first folded edge, a second folded edge and a third folded edge are arranged on the reinforcing plate from one side close to the panel to the outside, the reinforcing plate is divided into a first folded plate, a second folded plate, a third folded plate and a fourth folded plate from one side close to the panel to the outside by the first folded edge, the second folded edge and the third folded edge, the connecting edge of the reinforcing plate and the panel is parallel to the first folded edge, the second folded edge and the third folded edge, the panel and the third folded plate are connected by a fixing structure, and the side plates and the first folded plate are connected by the fixing structure, the width of the first folded plate and the width of the third folded plate are smaller than that of the second folded plate, and the width of the first folded plate, the width of the second folded plate and the width of the third folded plate meet the pythagorean theorem.

According to the cutting piece with the four-corner column reinforced, which is designed by the scheme, the cutting piece is a rectangular paper box or a tray after being folded and formed, in order to achieve the purposes of reinforcing the compressive strength and the supporting performance of the paper box and directly achieving the invention purpose of simple folding and forming process, the reinforcing structure is arranged on the cutting piece and comprises four reinforcing plates which are symmetrically arranged about the center of a bottom plate, triangular corner columns are formed after first folded plates, second folded plates, third folded plates and fourth folded plates of the reinforcing plates are folded, the first folded plates are perpendicular to a panel, the third folded plates are attached to the panel, the fourth folded plates are superposed with the first folded plates, two outward side surfaces of the triangular corner columns formed in the way are of double-layer structures, the strength of the corner columns is high, and good compressive strength and supporting performance can be provided. After being folded, the first folded plate is connected with the side plate at the same side through a conventional fixing structure, such as clamping, bonding, fixing of staples, bonding of box sealing belts and the like, and the third folded plate is fixedly connected with the panel. From the utilization of resources are saved, the clamping structure which can be repeatedly disassembled and assembled is recommended to be used. Use this technical scheme can obtain the packing carton or the tray that the angular column in four corners was strengthened through fold forming back, this packing carton or tray's compressive strength in vertical side is promoted greatly because the angular column in four corners, and the triangle-shaped angular column in four corners provides the article that supports the top for packing carton or tray when the pile for the influence of the goods that packing carton or tray were interior can not the pile.

Preferably, the panel comprises an inner edge of the panel connected to the base plate and an outer edge of the panel located opposite the inner edge of the panel, the middle part of the outer edge of the panel is inwards sunken to form a notch, the notch divides the panel into convex parts positioned at two sides of the notch and a connecting part positioned between the notch and the inner edge of the panel, the third folded plate is matched with the bulge part, the third folded plate is clamped with the panel through a first clamping structure, the clamping structure comprises a first folded plate connected to the bottom of the notch and an inward extending part extending from the third folded plate to the second folded plate, the first turnover plate is provided with a first clamping sheet, the inner edge of the panel is provided with a first bayonet matched with the first clamping sheet, the size of the inward extending part is matched with the connecting part of the panel, and the first turnover plate is matched with the inward extending parts on two sides of the panel corresponding to the first turnover plate. This mode is connected third folded sheet and panel, can reuse after unpacing apart, improves the reuse rate of cut-parts.

Preferably, the outer side edge of the first turnover plate is connected with a bottom plate reinforcing plate, and the bottom plate reinforcing plates respectively positioned on the two opposite face plates are matched with the bottom plate. After the folding forming, two opposite bottom plate reinforcing plates are folded and attached to the bottom plate to reinforce the bottom plate and enhance the strength of the bottom plate.

Preferably, the first engagement tab is two and is disposed along a centerline of the outer side of the first flap panel opposite the centerline of the outer side of the first flap panel. The reliability of clamping is improved through the two symmetrical first clamping sheets and the corresponding bayonets, so that the clamping structure is firmer.

Preferably, a third clamping piece is arranged at the bottom of the third folding plate, and a third bayonet matched with the third clamping piece is arranged on the side edge of the bottom plate connected with the panel. After the folding forming, the fixed connection of the third folded plate and the corresponding panel is reinforced through the matching of the third clamping sheet and the matched third clamping opening.

Preferably, the first folded plate with through second joint structure joint between the curb plate, second joint structure include, by first folded plate to the extension that the second folded plate place orientation extended formation with by the outside second that forms of extending on the side that curb plate and bottom plate are relative turns over the folded plate, extension top with respectively with first hem with the inner of second hem meets, the second turns over the folded plate outside and is equipped with the second joint piece, the bottom plate with be equipped with the second bayonet socket on the side that the curb plate links to each other, the second turns over the folded plate and is located rather than the cooperation of the extension on the curb plate both sides that corresponds. First folded plate and curb plate are connected to this mode, can reuse after unpacing apart, improve cut-parts's reuse rate.

Preferably, flanges are connected to two sides of the second folding plate, and the length of the flanges in the extending direction of the second folding plate is consistent with the distance from the bottom of the second folding plate to the bottom plate. After the folding forming, the flanging is folded below the second folding plate and used for supporting the triangular corner posts, so that the structural stability is enhanced, and the overall compressive strength is improved.

Preferably, the material of the cutting pieces is corrugated paper. The corrugated paper is structural paper formed by alternately bonding a layer of paper board and a layer of core paper, has high pressure resistance, and the scheme requires that the paper box or the tray has good pressure resistance, so the corrugated paper is suitable for the cutting pieces.

The utility model has the advantages that: triangular corner posts are provided on four corners of the packaging carton or the tray to serve as reinforcing structures, so that the supporting performance in the vertical direction is improved for the packaging carton or the tray, two outward side surfaces of the formed triangular corner posts are of double-layer structures, the strength of the corner posts is high, and the good compression strength and the supporting performance can be provided; the four corners of the folded and formed carton or tray are provided with reinforcing structures, so that the compressive strength of the carton or tray is increased; other parts do not need to be additionally arranged after the folding forming, and the manufacturing process is simple; the risk of corner post falling is avoided, and the reliability is higher; the bottom plate is reinforced, and the strength of the bottom plate is enhanced; the cutting piece can be reused after being disassembled, so that the repeated utilization rate of the cutting piece is improved; the turn-ups is folded to second flange below for support triangle-shaped corner post, reinforcing structural stability improves whole compressive strength.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 to 7 are the steps of the folding and forming of the cutting pieces of the present invention.

In the figure: the bottom plate comprises a bottom plate 1, a first bayonet 11, a second bayonet 12, a third bayonet 13, a panel 2, a first folded plate 21, a bottom plate reinforcing plate 22, a first clamping sheet 23, a convex part 24, a connecting part 25, a side plate 3, a second folded plate 31, a second clamping sheet 32, a reinforcing plate 4, a first folded edge 41, a second folded edge 42, a third folded edge 43, a first folded plate 44, a second folded plate 45, a third folded plate 46, a fourth folded plate 47, an extending part 5, an extending part 6, a notch 7 and a gap 8.

Detailed Description

To make the objects, technical solutions and advantages of embodiments of the present invention clearer, the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present solution, and are not construed as limiting the present solution.

These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "a plurality" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as fixed or removable connections or integral parts, either mechanically or electrically, or in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art

The specific embodiment is as follows: the embodiment is a cut-parts that four corners corner post was strengthened, and the material is three-layer corrugated paper, is a paper pallet after the folding forming. The cutting piece comprises a bottom plate, wherein a pair of opposite sides of the bottom plate are respectively connected with a panel, the other pair of opposite sides are respectively connected with a side plate, the foldable folding table is characterized in that two sides of the panel are respectively connected with a reinforcing plate, the four reinforcing plates are symmetrically distributed about the center of the bottom plate, a first folding edge, a second folding edge and a third folding edge are arranged on the reinforcing plate from one side close to the panel to the outside, the first folding edge, the second folding edge and the third folding edge divide the reinforcing plate from one side close to the panel to the outside into a first folding plate, a second folding plate, a third folding plate and a fourth folding plate, the connecting edge of the reinforcing plate and the panel is parallel to the first folding edge, the second folding edge and the third folding edge, the panel and the third folding plate are connected through a fixing structure, the side plate and the first folding plate are connected through a fixing structure, the widths of the first folding plate and the third folding plate are smaller than the widths of the second folding plate, and the widths of the first folding plate, the second folding plate and the third folding plate meet the P. The panel includes the panel interior limit of being connected with the bottom plate and is located the panel exterior limit of the interior limit offside of panel, the middle part of panel exterior is inwards sunken to form the breach, the breach divide into the bellying that is located the breach both sides with the panel and is located the connecting portion between the limit in breach and the panel, third folded plate and bellying adaptation, through first joint structure joint between third folded plate and the panel, the joint structure includes, connect in the first folded plate that turns over of breach bottom and by the interior extension portion that the third folded plate extends to second folded plate direction, be equipped with first joint piece on the first folded plate, be equipped with on the interior limit of panel with first joint piece complex first bayonet socket, interior extension portion size and the connecting portion adaptation of panel, first folded plate with lie in rather than the cooperation of the interior extension portion that corresponds the panel both sides. The outer side edge of the first turnover plate is connected with a bottom plate reinforcing plate, and the bottom plate reinforcing plates on the two opposite face plates are matched with the bottom plate. The first clamping connection pieces are arranged on the outer side edges of the first folding plates along the middle lines of the outer side edges of the first folding plates oppositely. And a third clamping sheet is arranged at the bottom of the third folding plate, and a third clamping opening matched with the third clamping sheet is arranged on the side edge of the bottom plate connected with the panel. The first folded plate and the side plate are connected through a second clamping structure in a clamping mode, the second clamping structure comprises an extension portion formed by extending the first folded plate towards the second folded plate and a second turnover plate formed by extending the side edge, opposite to the side plate, of the side plate to the bottom plate outwards, the top of the extension portion is connected with the inner end of the first folded edge and the inner end of the second folded edge respectively, a second clamping piece is arranged on the outer side of the second turnover plate, a second bayonet is arranged on the side edge, connected with the side plate, of the bottom plate, and the second turnover plate is matched with the extension portion located on the two sides of the side plate corresponding to the second turnover plate. The two sides of the second turnover plate are connected with flanges, and the length of the flanges along the extending direction of the second turnover plate is consistent with the distance from the bottom of the second turnover plate to the bottom plate.

As shown in fig. 1, in this embodiment, the bottom plate of the cutting piece is a rectangular bottom plate 1, two panels 2 are respectively connected to the upper and lower sides of the bottom plate 1, two side plates 3 are respectively connected to the left and right sides of the bottom plate 1, a reinforcing plate 4 is respectively connected to each of the left and right sides of each panel, four reinforcing plates 4 are symmetrically arranged about the center of the bottom plate 1, taking the upper left corner reinforcing plate as an example, a first folding edge 41, a second folding edge 42 and a third folding edge 43 are vertically arranged on the reinforcing plate 4 from right to left, the reinforcing plate 4 is divided into a first folding plate 44, a second folding plate 45, a third folding plate 46 and a fourth folding plate 47 from right to left, wherein the first folding plate 44, the third folding plate 46 and the fourth folding plate 47 have the same width, the second folding plate 45 has the largest width, the reinforcing plate 4 encloses an isosceles right triangle with the width of the second folding plate 45 as the hypotenuse after being folded, the first folding plate 44 extends leftwards, the third fold plate extends rightwards to form an inward extending portion 6, the lower ends of the first fold edge 41 and the second fold edge 42 are connected with the upper end of the extending portion 5, the upper end of the extending portion 5 is separated from the lower end of the second fold plate 45, the left side of the extending portion is separated from the third fold plate, the inward extending portion 6 is separated from the extending portion 5 through a cutting line, the lower end of the third fold plate 46 is provided with a third clamping piece 48, the upper edge of the base plate 1 is provided with a third clamping opening 13 matched with the third clamping piece 48, the four reinforcing plates 4 are identical in structure and only different in arrangement position, and the repeated description is omitted.

Two identical panels 2 are symmetrically arranged on the upper side and the lower side of a bottom plate 1 and are respectively connected with the upper side and the lower side of the bottom plate 1, taking the panel 2 above the bottom plate 1 as an example for explanation, the middle part of the upper side edge of the panel 2 is sunken downwards to form a notch 7, the notch 7 divides the panel into a convex part 24 positioned on the two sides of the notch and a connecting part 25 positioned between the notch and the inner side edge of the panel, the bottom of the notch 7 is connected with a first turnover plate 21, the transverse length of the first turnover plate 21 is consistent with the notch 7, the upper side of the first turnover plate 21 is connected with a bottom plate reinforcing plate 22, the transverse length of the bottom plate reinforcing plate 22 is consistent with the notch 7, the longitudinal length of the bottom plate reinforcing plate 22 is equal to half of the longitudinal length of the bottom plate 1, two first clamping sheets 23 are arranged on the connecting edge of the first turnover plate 21 and the bottom plate reinforcing plate 22, two first clamping ports 11 correspondingly matched, are arranged symmetrically with respect to the transverse median line of the bottom panel 1 and will not be described in detail.

The two same side plates 3 are symmetrically arranged on the left side and the right side of the bottom plate 1 and are respectively connected with the left side and the right side of the bottom plate 1, the side plate 3 on the left side of the bottom plate 1 is taken as an example for explanation, the main body of the side plate 3 is an isosceles trapezoid plate, the long bottom edge of the right side of the side plate is connected with the left side edge of the bottom plate 1, the short bottom edge on the left side of the side plate extends leftwards to form a second turnover plate 31, a second clamping sheet 32 is arranged on the left side edge of the second turnover plate 31, a second clamping opening 12 matched with the second clamping sheet 32 is arranged on the left side edge of the bottom plate 1, flanges 33 are arranged on the upper side edge and the lower side edge of the second turnover plate 31. The structure of the side plate on the right side of the bottom plate 1 is completely the same as the above structure, and is only symmetrically arranged about the longitudinal center line of the bottom plate 1, and the description is omitted.

The cutting piece folding steps of the embodiment are as follows:

firstly, as shown in fig. 2, the cut piece is placed flatly, the first folding plate 44, the second folding plate 45, the third folding plate 46 and the fourth folding plate 47 of the four reinforcing plates 4 are respectively folded along the side edge of the panel 2, the first folding edge 41, the second folding edge 42 and the third folding edge 43 towards the direction of the panel 2, the folding angles are respectively 90 degrees, 45 degrees and 90 degrees, four triangular corner columns are formed, and then the third clamping piece 48 is inserted into the third clamping opening 13. At this time, the four extensions 5 are perpendicular to the plane of the base plate 1 (not shown). The inward extending parts 6 of the two reinforcing plates 4 positioned above the bottom plate 1 are attached to the connecting part 25 of the panel 2 on the upper side of the bottom plate, and the structure below the bottom plate 1 is symmetrical to the structure.

Step two, as shown in fig. 3, the upper and lower panels 2 and the triangular corner posts are respectively turned inwards by 90 degrees along the upper and lower edges of the bottom plate 1, the two extending portions 5 opposite in the extending direction are oppositely arranged, and at this time, a gap 8 is formed between the lower end of the second folded plate 45 and the bottom plate 1.

Step three, as shown in fig. 4, the first folding plate 21 and the bottom plate reinforcing plate 22 on the two panels 2 are folded inwards along the bottom of the notch 7, and at the same time, the bottom plate reinforcing plate 22 is folded inwards along the connecting edge of the first folding plate 21, and until the bottom plate reinforcing plate 22 is folded to be attached to the bottom plate 1 and the first folding plate 21 is attached to the connecting portion 25 of the panel 2, at this time, the inward extending portion is located between the connecting portion and the first folding plate 21, and then the first clamping piece 23 is inserted into the first bayonet 11.

Step four, as shown in fig. 5, the flanges 33 at both sides of the second flap panel 31 are folded outwardly by 90 degrees along their connecting edges.

Step five, as shown in fig. 6, the side plates 3 on the left and right sides of the bottom plate 1 are turned upwards, the two second turning plates 31 are turned inwards to be attached to the outer extension part 5, and the second clamping pieces 32 are inserted into the second bayonets 12.

Step six, as shown in fig. 7, the flanges 33 on both sides of the second flap 32 are folded into the adjacent gaps 8.

Triangular corner posts are arranged at four corners of the tray obtained by folding the cut pieces according to the method, the stacking capacity of the tray is enhanced, the supporting performance in the vertical direction is improved for the tray, two outward side surfaces of the formed triangular corner posts are of a double-layer structure, the strength of the corner posts is high, and good compressive strength and supporting performance can be provided; the four corners of the folded and formed carton or tray are provided with reinforcing structures, so that the compressive strength of the carton or tray is increased; other parts do not need to be additionally arranged after the folding forming, and the manufacturing process is simple; the risk of corner post falling is avoided, and the reliability is higher; the bottom plate is reinforced, and the strength of the bottom plate is enhanced; the cutting piece can be reused after being disassembled, so that the repeated utilization rate of the cutting piece is improved; the turned-over edge 33 is folded below the second folding plate and used for supporting the triangular corner posts, so that the structural stability is enhanced, and the overall compressive strength is improved.

Above, only the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.

Claims (8)

1. A cutting piece reinforced by four-corner columns comprises a bottom plate, wherein a pair of opposite sides of the bottom plate are respectively connected with a panel, and the other pair of opposite sides of the bottom plate are respectively connected with a side plate, and the cutting piece is characterized in that two sides of the panel are respectively connected with a reinforcing plate, the four reinforcing plates are symmetrically distributed about the center of the bottom plate, a first folded edge, a second folded edge and a third folded edge are outwards arranged on one side close to the panel on each reinforcing plate, the first folded edge, the second folded edge and the third folded edge divide the reinforcing plate into a first folded plate, a second folded plate, a third folded plate and a fourth folded plate from one side close to the panel, the connecting edges of the reinforcing plates and the panel are parallel to the first folded edge, the second folded edge and the third folded edge, the panel and the third folded plate are connected by a fixing structure, and the side plates and the first folded plate are connected by a fixing structure, the width of the first folded plate and the width of the third folded plate are smaller than that of the second folded plate, and the width of the first folded plate, the width of the second folded plate and the width of the third folded plate meet the pythagorean theorem.

2. The four-corner post reinforced cutting piece according to claim 1, wherein the panel comprises an inner panel edge connected with the bottom plate and an outer panel edge located on the opposite side of the inner panel edge, the middle part of the outer panel edge is recessed inwards to form a notch, the notch divides the panel into a protruding part located on two sides of the notch and a connecting part located between the notch and the inner panel edge, the third folded plate is adapted to the protruding part, the third folded plate is clamped with the panel through a first clamping structure, the clamping structure comprises a first folded plate connected to the bottom of the notch and an inward extending part extending towards the second folded plate from the third folded plate, a first clamping sheet is arranged on the first folded plate, a first clamping opening matched with the first clamping sheet is arranged on the inner panel edge, and the size of the inward extending part is adapted to the connecting part of the panel, the first turnover plate is matched with the inward extending parts at two sides of the corresponding panel.

3. The corner post reinforced cutting piece of claim 2, wherein the first turnover plate is connected with a bottom plate reinforcing plate on the outer side edge, and the bottom plate reinforcing plates respectively positioned on the two opposite side plates are matched with the bottom plate.

4. A four corner post reinforcing panel as claimed in claim 2, wherein there are two of said first engagement tabs disposed on the outer side edges of said first flaps opposite each other along the midline of the outer side edges of said first flaps.

5. The corner post reinforcement cutting piece of claim 1, wherein a third clamping piece is arranged at the bottom of the third cutting plate, and a third bayonet matched with the third clamping piece is arranged on the side edge of the bottom plate connected with the panel.

6. A cutting piece with a four-corner post reinforcement as claimed in claim 1, 2, 3, 4 or 5, characterized in that the first folded plate is clamped with the side plate through a second clamping structure, the second clamping structure comprises an extension part formed by extending the first folded plate towards the direction of the second folded plate and a second folded plate formed by extending the side plate opposite to the bottom plate outwards, the top of the extension part is connected with the inner end of the first folded edge and the inner end of the second folded edge respectively, a second clamping sheet is arranged on the outer side of the second folded plate, a second bayonet is arranged on the side of the bottom plate connected with the side plate, and the second folded plate is matched with the extension part on the two sides of the side plate corresponding to the second folded plate.

7. The cutting piece for reinforcing the four-corner post as claimed in claim 6, wherein flanges are connected to two sides of the second turnover plate, and the length of the flanges along the extension direction of the second turnover plate is consistent with the distance from the bottom of the second turnover plate to the bottom plate.

8. The cutting piece with the four corner columns reinforced according to claim 1, wherein the cutting piece is made of corrugated paper.

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