Carton double-cutting-piece with grids and automatically-formed double-cutting-piece carton

Abstract

The invention discloses a carton double cutting piece with grids. The carton double cutting piece comprises a piece A and a piece B, the piece A comprises a long area and a short area which are transversely connected, and one side of the piece A is transversely and outwards connected with a piece A grid block bonding part and a piece A grid block in sequence; the length of the splicing part of the piece A grid is smaller than that of the long area; the length of the A block is matched with that of the short area; the sheet B comprises a long area and a short area which are the same as the sheet A in position and length. And the height of each long rocking cover of the A piece and the B piece is half of the width of the short side wall. And the rocking covers of the A piece and the B piece are equal in height. And the height of the grid block A is equal to that of the short side wall. On the basis, the invention further discloses an automatically-formed double-cutting-piece carton which is formed by folding the double cutting pieces of the carton with the grids. The scheme has the beneficial effects that the two cutting pieces are used for replacing a traditional single cutting piece to form the box, the box is provided with the grids, automatic equipment can be used for folding the box and unfolding the grids, and manual operation is not needed.

Description

Technical Field

[0001] The invention belongs to the field of carton packaging, in particular to a carton double-cut pieces with self-contained grids, and an automatically formed double-cut piece carton folded from the cut pieces. Background Art

[0002] The 02-type box is the most common outer packaging carton. It is composed of a piece of corrugated cardboard. The seams are sealed by nailing or gluing to form a finished carton. The top and bottom flaps form the bottom and lid of the box. It can be folded flat during transportation and the lid is sealed during use. See http: / / www.youlipin.com / article / 5275.html for an introduction. The 0201 carton is designed as a single piece. The pieces are connected horizontally with L area, W area, L area, and W area in sequence, that is, the long area and the short area are connected at intervals. The long area is provided with a long side wall, which is connected to the upper and lower flaps of the long side wall respectively. The short area is provided with a short side wall, which is connected to the upper and lower flaps of the short side wall respectively; the pasting area is located at one end of the horizontal side of the piece. In order to facilitate the use of packaging, the carton used for outer packaging is usually equipped with a grid, which is also called a knife card. The inside of the carton can be divided into several relatively independent areas to place independent small items. The knife cards are usually cut and slotted separately from cardboard, and then these cardboards are criss-crossed and plugged into a tic-tac-toe shape. They are folded into stacks in the thickness direction when stored, and then unfolded and placed in the carton when used. Chinese patent document CN211919302U, disclosed on November 13, 2020, "A carton for bottled products", including a box body, and also including a plurality of transverse knife cards arranged in the box body and a longitudinal knife card located in the box body and adapted to the transverse knife cards. A pad is provided at the bottom of the box body, and a plurality of criss-cross slots are provided on the top surface of the pad. The bottoms of the transverse knife cards and the longitudinal knife cards are respectively plugged into the slots, and a plurality of placement slots are formed between the criss-crossed transverse knife cards and the longitudinal knife cards. A first buffer is provided on the top surface of the pad, and the first buffer is located at the bottom of the placement slot, and a second buffer is provided on the inner wall of the placement slot. The utility model provides a first buffer and a second buffer at the bottom of the placement groove and the side walls of the horizontal knife clip and the longitudinal knife clip, respectively, so that the carton can play a buffering role on the products inside, thereby protecting the products. In this traditional solution, both folding into boxes and placing grids require manual operation, which is inefficient, labor-intensive, and the grids are easily damaged when unfolding and putting into boxes. Although there are currently automated equipment that can complete the gluing and unfolding of cartons, the grid problem has never been solved and still requires manual operation. Summary of the invention

[0003] Based on the above problems, the present invention provides a double-cut carton with built-in grids, which uses two cut pieces to replace the traditional single cut piece to make a box. It also has built-in grids and can be folded into a box and unfolded with automated equipment without manual operation.

[0004] In order to achieve the first object of the invention, the present invention adopts the following technical solution: a double-cut piece of a paper box with a self-contained grid, Includes A film and B film; The A-sheet includes a long area and a short area connected transversely, and one side of the A-sheet grid bonding part and the A-sheet grid are sequentially connected transversely outward; the length of the A-sheet grid bonding part is shorter than the length of the long area; the length of the A-sheet grid matches the length of the short area; The B piece includes a long area and a short area having the same position and length as the A piece.

[0005] Preferably, the height of each long flap of the A sheet and the B sheet is half the width of the short side wall.

[0006] Preferably, the heights of the flaps of the A sheet and the B sheet are equal.

[0007] Preferably, the height of the A-piece grid is equal to the height of the short side wall.

[0008] Preferably, the height of the A-sheet grid bonding portion is equal to the height of the A-sheet grid.

[0009] Preferably, one lateral end of sheet A is connected to sheet A bonding portion; sheet B bonding portion 50b is located on the same side of sheet B.

[0010] Preferably, the length of the grid bonding portion of sheet A is less than half the length of the long area; and sheet B and sheet A are completely consistent in shape and size.

[0011] Preferably, the length of the A-piece grid bonding portion is 1 / 3 of the length of the long region.

[0012] In order to achieve the second purpose of the invention, the utility model adopts the following technical solution: an automatically formed double-cut carton, which is folded by the double cut pieces of the self-contained grid carton as described above.

[0013] Preferably, the shape and size of sheet B are exactly the same as those of sheet A.

[0014] In order to reduce the length of the article and compress the ineffective repetitive description of the known prior art, with reference to the background technology in the previous article, the definitions of the long area and the short area in the article are as follows: Long area: The middle part is a rectangular side panel, and the upper and lower sides of the side panel are connected to a long swing cover respectively; Short area: The middle part is a rectangular side panel, and the upper and lower sides of the side panel are connected to a short swing cover respectively; The side panels of the long area and the side panels of the short area are connected laterally and have the same height.

[0015] This solution changes the layout of the traditional single-piece long area and the short area connected at intervals into a double-piece, each piece only including one long area and one short area connected, so as to design a grid on the carton piece.

[0016] The grid is extended and arranged on one side of one of the cut pieces. After being folded into a box, it will be placed horizontally inside the box body. The root is fixed to the opposite side panel through the grid bonding part, and the end is fixed to the corresponding side panel on this side through the pasting part. In this way, not only are the two independent cut pieces fixed into one, but also a grid is generated in the box body. If a grid is set on only one cut piece, there will be only one grid in the box body after being folded into a box. If a grid is set on both cut pieces, two grids will be formed in the box body after being folded into a box.

[0017] The ultimate development of this plan is to use two identical pieces of material, which are folded into a box and then have two compartments inside, dividing the space inside the box into three equal parts.

[0018] Although this solution uses double-cut pieces, which has one more part than the traditional single-cut piece, the traditional solution will have to add a grid later, so this solution undoubtedly has an advantage in the number of parts. Further considering the large-scale application of automated box folding equipment at present, even without considering the addition of grids, the disadvantage of the number of parts of the double-cut pieces in this solution compared to the traditional single-cut pieces is almost negligible. Since the double-cut pieces in this solution can come with grids, they are easy to store and transport, and the automated box folding equipment can also open the grids, which can be completely unmanned. In the extreme state, two completely identical cut pieces can be used, which is also very advantageous in production and stocking. Therefore, the progress of this solution is still very obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a double-cut piece of a paper box with a self-contained grid according to the present invention, with piece A on the top and piece B on the bottom; Figures 2 to 9 for Figure 1 Step-by-step diagram of the folding of the pieces; Fig. 9 Also serving as a schematic diagram of an automated double-cut carton in Example 5; Fig.10 is a schematic diagram of the internal structure of the box of Example 1; Fig.11 is a schematic diagram of the internal structure of the box of Example 5; Fig.12 is a schematic diagram of the internal structure of the box of Example 6; Fig.13 is a schematic diagram of the internal structure of the box of Example 7; Fig.14 It is a schematic diagram of another double-cutting piece of a paper box with self-contained grids of the present invention, with piece A on the top and piece B on the bottom; Figures 15 to 22 yes Fig.14 Step-by-step diagram of the folding of the pieces; Fig. 22 Also serving as a schematic diagram of another automatic forming double-cut carton in Example 8; Fig.23 is a schematic diagram of the internal structure of the box of Example 8; Fig.24 is a schematic diagram of the internal structure of the box of Example 11; Fig.25 is a schematic diagram of the internal structure of the box of Example 12; Fig.26 This is a schematic diagram of the internal structure of the box of Example 13.

[0020] Wherein: 10a: long side plate of sheet A; 11a: first long flap of sheet A; 12a: second long flap of sheet A; 20a: short side plate of sheet A; 21a: first short flap of sheet A; 22a: second short flap of sheet A; 30a: grid bonding part of sheet A; 40a: grid of sheet A; 50a: pasting part of sheet A; 10b: long side plate of B sheet; 11b: first long flap of B sheet; 12b: second long flap of B sheet; 20b: short side plate of B sheet; 21b: first short flap of B sheet; 22b: second short flap of B sheet; 30b: grid bonding part of B sheet; 40b: grid of B sheet; 50b: pasting part of B sheet; DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example 1 Embodiment 1 is a double-cut piece of a carton with self-contained grids, the material of which is corrugated paper, which can also be changed to white cardboard or other relatively rigid cardboard according to design requirements by those skilled in the art.

[0023] This embodiment includes two pieces A and B.

[0024] See also Figure 1As shown, the A-sheet includes a long area, a short area, an A-sheet grid bonding portion 30a and an A-sheet grid 40a from right to left. Among them, the long area is centered with a rectangular A-sheet long side plate 10a, the upper side of which is upwardly connected to the A-sheet first long swing cover 11a, and the lower side of which is downwardly connected to the A-sheet second long swing cover 12a. The short area is centered with a rectangular A-sheet short side plate 20a, the upper side of which is upwardly connected to the A-sheet first short swing cover 21a, and the lower side of which is downwardly connected to the A-sheet second short swing cover 22a. The left side of the A-sheet long side plate 10a overlaps with the right side of the A-sheet short side plate 20a, and the height of the A-sheet long side plate 10a is equal to the height of the A-sheet short side plate 20a. In this example, the length of the A-sheet long side plate 10a is greater than the length of the A-sheet short side plate 20a. After folding, the long side plate 10a of A sheet will become the side wall of the length direction of the paper box, and the short side plate 20a of A sheet will become the side wall of the width direction of the paper box, so the formed paper box is rectangular. The A sheet grid bonding part 30a is rectangular, connected to the left side of the short side plate 20a of A sheet. The A sheet grid bonding part 30a is used to connect with the opposite B sheet, and at the same time determines the starting position of one end of the A sheet grid 40a. The A sheet grid 40a is also rectangular, connected to the left side of the A sheet grid bonding part 30a, and the length of the A sheet grid 40a is equal to the length of the short side plate 20a of A sheet. The A sheet grid 40a will play the role of separating space. The left side of the A sheet grid 40a is connected with a connecting structure, which is used to connect the end of the A sheet grid 40a with the long side plate 10a of A sheet to realize the fixing of the other end of the A sheet grid 40a. The connecting structure can be reasonably selected by those skilled in the art according to design needs.

[0025] From right to left, the B piece includes a long area, a short area and a connecting structure. Like the A piece, the long area includes a long side plate 10b of the B piece of the same size, the upper side edge of the long side plate 10b of the B piece is upwardly connected to the first long rocker cover 11b of the B piece, and the lower side edge of the long side plate 10b of the B piece is downwardly connected to the second long rocker cover 12b of the B piece; the B piece includes a short side plate 20b of the B piece of the same size, the upper side edge of the short side plate 20b of the B piece is upwardly connected to the first short rocker cover 21b of the B piece, and the lower side edge of the short side plate 20b of the B piece is downwardly connected to the second short rocker cover 22b of the B piece. The B piece also includes a connecting structure, but in this example, the connecting structure of the B piece is directly arranged on the left side of the short side plate 20b of the B piece, and in this example, the connecting structure of the B piece is used to connect with the opposite A piece.

[0026] The carton obtained by folding the cut pieces of this embodiment has two long side walls, respectively, the long side panel 10a of sheet A and the long side panel 10b of sheet B; the two short side walls, respectively, the short side panel 20a of sheet A and the short side panel 20b of sheet B; the two long upper flaps, respectively, the first long flap 11a of sheet A and the second long flap 12b of sheet B; the two short upper flaps, respectively, the first short flap 21a of sheet A and the second short flap 22b of sheet B; the two long lower flaps, respectively, the second long flap 12a of sheet A and the first long flap 11b of sheet B; the two short lower flaps, respectively, the second short flap 22a of sheet A and the first short flap 21b of sheet B; the grid is the grid 40a of sheet A, one end of which is fixed to the long side panel 10a of sheet A, and the other end is fixed to the long side panel 10b of sheet B. See the simplified schematic diagram of the box. Fig.10 shown.

[0027] This embodiment is the most basic version of this solution, and subsequent embodiments will evolve on the basis of this embodiment.

[0028] Example 2 In Example 2, the connection structure of sheet A is the sheet A pasting portion 50a, and the connection structure of sheet B is the sheet B pasting portion 50b, and both are fixed by pasting.

[0029] This solution is more suitable for application in automatic box folding machines.

[0030] The rest is the same as in Example 1.

[0031] Example 3 In Example 3, the connection structure of the A piece is a plug hook, and a slot is set at the corresponding position of the long side plate 10a of the A piece. When folding, the plug hook is inserted into the slot to achieve connection and fixation. Figure 2 , Figure 3 The connection structure between part 2313 and part 2333.

[0032] The plugging action in this solution requires manual operation, so it is not suitable for automatic box folding machines and is generally suitable for cartons with relatively small usage.

[0033] The rest is the same as Example 2.

[0034] Example 4 In Example 4, the connection structure of sheet A is the sheet A pasting portion 50a, and the connection structure of sheet B is the sheet B pasting portion 50b, but both are fixed by nailing.

[0035] This solution is more suitable for automatic box folding machines. However, due to the use of metal nails, the cartons need to be removed before they can be recycled, which increases the cost of recycling and is not efficient. Purchasers should weigh the options based on their needs.

[0036] Example 5 In Embodiment 5, the length of the A-sheet grid 40a is greater than the length of the A-sheet short side plate 20a. After being folded into a box, the A-sheet grid 40a is placed obliquely in the paper box.

[0037] See the simplified schematic diagram of the box for Fig.11 shown.

[0038] The rest is the same as in Example 1.

[0039] Example 6 In Example 6, the length of the A-sheet grid bonding portion 30a is equal to the length of the B-sheet long side panel 10b. In the folded paper box, the A-sheet short side panel 20a, the A-sheet grid bonding portion 30a, and the A-sheet grid 40a together form a right triangle, thereby dividing the interior of the paper box into two equal parts along the diagonal line.

[0040] See the simplified schematic diagram of the box for Fig.12 shown.

[0041] The rest is the same as Example 5.

[0042] Example 7 In Example 7, the length of the A-sheet grid bonding portion 30a is equal to the length of the B-sheet long side plate 10b, and the A-sheet grid 40a is folded into two sections, and the two sections of the A-sheet grid 40a and the B-sheet long side plate 10b form a triangle, the base of the triangle is the B-sheet long side plate 10b, and the position of the folding point in the middle of the A-sheet grid 40a is the vertex, which is on the A-sheet long side plate 10a, forming a relatively stable triangular structure. This solution can divide the space in the paper box into three parts.

[0043] See the simplified schematic diagram of the box for Fig.13 shown.

[0044] The folding steps of the cut pieces of Example 1 are described below: Step 1, see Figure 2 As shown, lay out sheet A and sheet B neatly; Step 2, see Figure 3 As shown, the A sheet is folded along the common edge of the A sheet short side plate 20a and the A sheet grid bonding portion 30a, so that the A sheet grid bonding portion 30a, the A sheet grid 40a and the A sheet pasting portion 50a are located at the top, and the A sheet long side plate 10a and the A sheet short side plate 20a are located at the bottom; the B sheet pasting portion 50b of the B sheet is folded so that it is located at the top, and the B sheet long side plate 10b and the B sheet short side plate 20b are located at the bottom; Step 3, see Figure 4 As shown, the A-sheet pasting portion 50a is pasted to the fixed point of the A-sheet long side plate 10a; at this time, the A-sheet long side plate 10a, the A-sheet short side plate 20a, the A-sheet grid bonding portion 30a, and the A-sheet grid 40a can be surrounded to form a rectangle; Step 4, see Figure 5 As shown, turn the B sheet around and invert it to ensure that the size of the long area plus the short area of ​​the B sheet accurately covers the short area plus the lengthened area of ​​the A sheet; accurately glue the A sheet's grid bonding portion 30a and the B sheet's long side plate 10b at a preset position, and glue the B sheet's gluing portion 50b and the right side of the A sheet's long side plate 10a; at this time, the A sheet and the B sheet are glued together in layers to form a joint body, forming a storage and transportation state; Step 5, see Figure 6 As shown, the two long side plates and the two short side plates of the A-sheet and B-sheet combination in the storage and transportation state are unfolded in a parallelogram manner, and it can be seen that the A-sheet grid 40a has been transversely arranged in the unfolded box; Step 6, see Figure 7 As shown, the bottom of the box is normally closed, so that the carton opening faces upwards for loading the contents; Step 7, see Figure 8 As shown, close the two short flaps; Step 8, see Fig. 9 As shown in the figure, close the two short flaps and seal the box.

[0045] From the folding process, it can be seen that the technical advantages of Example 1 and the solution evolved from Example 1 are: no manual participation is required throughout the process, and the folding, gluing, unfolding and other steps can all be completed by the automatic box folding machine, which is fast, efficient and accurate. The cut pieces have their own grids and can be opened by the machine, omitting a series of complex manual operations such as molding, cutting, and plugging, which is very suitable for the box type 02, which is widely used and has a huge number of uses.

[0046] It should be noted that even though there are multiple evolution routes for the A-sheet grid 40a in Embodiment 5, Embodiment 6, and Embodiment 7, the A-sheet pasting portion 50a must be fixed to the A-sheet long side plate 10a or the A-sheet short side plate 20a, otherwise this solution will fail. In addition, the machine must also be adjusted accordingly to adapt to the three-dimensional boxing operation.

[0047] There is another deformation evolution route, which is to redesign the two long side panels, such as the flat top structure disclosed in CN212172842U, the handle structure disclosed in CN213110133U, etc. Those skilled in the art can make a choice according to actual design needs.

[0048] Example 8 Example 8 is a double-cut piece of a carton with built-in grids, the material of which is corrugated paper, which can also be changed to white cardboard or other relatively rigid cardboard according to design requirements by technical personnel in this field.

[0049] See also Fig.14As shown, the A-sheet includes a long area, a short area, an A-sheet grid bonding portion 30a and an A-sheet grid 40a from right to left. Among them, the long area is centered with a rectangular A-sheet long side plate 10a, the upper side of which is upwardly connected to the A-sheet first long swing cover 11a, and the lower side of which is downwardly connected to the A-sheet second long swing cover 12a. The short area is centered with a rectangular A-sheet short side plate 20a, the upper side of which is upwardly connected to the A-sheet first short swing cover 21a, and the lower side of which is downwardly connected to the A-sheet second short swing cover 22a. The heights of the A-sheet first long swing cover 11a, the A-sheet first short swing cover 21a, the A-sheet second long swing cover 12a and the A-sheet second short swing cover 22a are equal, and are all half the length of the A-sheet short side plate 20a. The left side of the long side plate 10a of the A sheet overlaps with the right side of the short side plate 20a of the A sheet, and the height of the long side plate 10a of the A sheet is equal to the height of the short side plate 20a of the A sheet. In this example, the length of the long side plate 10a of the A sheet is greater than the length of the short side plate 20a of the A sheet. After folding, the long side plate 10a of the A sheet will become the side wall of the length direction of the paper box, and the short side plate 20a of the A sheet will become the side wall of the width direction of the paper box, so the formed paper box is rectangular. The A sheet grid bonding part 30a is a rectangle, connected to the left side of the short side plate 20a of the A sheet. The A sheet grid bonding part 30a is used to connect with the opposite B sheet, and at the same time determines the starting position of one end of the A sheet grid 40a. The A sheet grid 40a is also a rectangle, connected to the left side of the A sheet grid bonding part 30a, and the length of the A sheet grid 40a is equal to the length of the short side plate 20a of the A sheet. In this example, the heights of the short side plate 20a of the A sheet, the A sheet grid bonding portion 30a, and the A sheet grid 40a are equal. The A sheet grid 40a will play the role of separating the space. The left side of the A sheet grid 40a is connected with a connecting structure, which is used to connect the end of the A sheet grid 40a with the long side plate 10a of the A sheet to achieve the fixation of the other end of the A sheet grid 40a. The connecting structure can be reasonably selected by those skilled in the art according to the design requirements. In this example, the A sheet pasting portion 50a is selected to fix it in a pasting manner.

[0050] The shape and size of plate B in this example are exactly the same as those of plate A.

[0051] The folding steps of the cut pieces of Example 8 are described below: Step 1, see Fig.15 As shown, lay out sheet A and sheet B neatly; Step 2, see Fig.16As shown, the A sheet is folded along the common edge of the A sheet short side plate 20a and the A sheet grid bonding portion 30a, so that the A sheet grid bonding portion 30a, the A sheet grid 40a and the A sheet pasting portion 50a are located at the top, and the A sheet long side plate 10a and the A sheet short side plate 20a are located at the bottom; the B sheet is folded along the common edge of the B sheet short side plate 20b and the B sheet grid bonding portion 30b, so that the B sheet grid bonding portion 30b, the B sheet grid 40b and the B sheet pasting portion 50b are located at the top, and the B sheet long side plate 10b and the B sheet short side plate 20b are located at the bottom; Step 3, see Fig.17 As shown, the A-sheet pasting portion 50a is pasted to the fixed point position of the long side plate 10a of the A-sheet; at this time, the long side plate 10a of the A-sheet, the short side plate 20a of the A-sheet, the A-sheet grid bonding portion 30a, and the A-sheet grid 40a can be surrounded to form a rectangle; similarly, the B-sheet pasting portion 50b is pasted to the fixed point position of the long side plate 10b of the B-sheet; at this time, the long side plate 10b of the B-sheet, the short side plate 20b of the B-sheet, the B-sheet grid bonding portion 30b, and the B-sheet grid 40b can be surrounded to form a rectangle; Step 4, see Fig.18 As shown, turn the B sheet around and invert it to ensure that the size of the long area plus the short area of ​​the B sheet accurately covers the short area plus the lengthened area of ​​the A sheet; accurately glue the A sheet's grid bonding portion 30a and the B sheet's long side plate 10b at the preset position, and accurately glue the B sheet's grid bonding portion 30b and the B sheet's long side plate 10b at the preset position; at this time, the A sheet and the B sheet are stacked and glued into a joint body to form a storage and transportation state; Step 5, see Fig.19 As shown, the two long side plates and the two short side plates of the A-sheet and B-sheet combination in the storage and transportation state are unfolded in a parallelogram manner, and it can be seen that the A-sheet grid 40a and the B-sheet grid 40b have been transversely arranged in the unfolded box; Step 6, see Fig. 20 As shown, the bottom of the box is normally closed, so that the carton opening faces upwards for loading the contents; Step 7, see Fig.21 As shown, close the two short flaps; Step 8, see Fig. 22 As shown in the figure, close the two short flaps and seal the box.

[0052] See the simplified schematic diagram of the box in this embodiment. Fig.23 As shown, the space inside the box is divided into three parts: left, middle and right by two grids, namely, the A-grid 40a and the B-grid 40b. The A-grid 40a and the B-grid 40b are parallel to each other and to the A-grid short side plate 20a.

[0053] Similarly, in this embodiment or subsequent evolutionary schemes, the A-sheet gluing portion 50a must be fixed to the A-sheet long side plate 10a or the A-sheet short side plate 20a, and the B-sheet gluing portion 50b must be fixed to the B-sheet long side plate 10b or the B-sheet short side plate 20b, otherwise this scheme will become invalid.

[0054] Example 9 In Example 9, the A-sheet grid 40a and the B-sheet grid 40b are provided with corresponding matching structures to facilitate the placement of some special-shaped contents in the folded paper box. In this example, a relatively large circular opening is provided at the center of the A-sheet grid 40a and the B-sheet grid 40b. Since the positions of the A-sheet grid 40a and the B-sheet grid 40b are fixed and the gap between them is fixed, the circular openings on the A-sheet grid 40a and the B-sheet grid 40b can clamp a round glass lamp ball, thereby achieving buffer protection.

[0055] The rest is the same as Example 8.

[0056] Example 10 In Example 10, the folded paper box will be used to hold an engine crankshaft, so the upper sides of the A-piece grid 40a and the B-piece grid 40b are modified according to the contour of the contents, and corresponding lower grooves are dug out at corresponding positions to adapt to the shape and size of the engine crankshaft.

[0057] The rest is the same as Example 8.

[0058] Embodiment 11 This embodiment provides an evolutionary change mode of the grid. In this example, the length of the A-sheet grid 40a and the B-sheet grid 40b are both greater than the length of the A-sheet short side plate 20a, so the A-sheet grid 40a and the B-sheet grid 40b are oblique in the box body and are not parallel to the A-sheet short side plate 20a. The ideal state is that the lengths of the A-sheet grid 40a and the B-sheet grid 40b are equal, and the two are parallel. The space separated by this solution is not rectangular, and those skilled in the art can choose a specific mode according to their actual needs.

[0059] See the simplified schematic diagram of the box for Fig.24 shown.

[0060] The rest is the same as Example 8.

[0061] Example 12 In this embodiment, the length of the A-sheet grid adhesive portion 30a is equal to the B-sheet long side plate 10b, and the A-sheet grid 40a is divided into two sections at the center position, and together with the A-sheet grid adhesive portion 30a, an isosceles triangle is formed: the A-sheet grid adhesive portion 30a is the bottom edge, and the two sections of the A-sheet grid 40a are the waist. Similarly, the B-sheet grid adhesive portion 30b and the B-sheet grid 40b also form an isosceles triangle of the same shape and size, and the apex angles of the two isosceles triangles touch each other. In such a design, the space in the box body will be divided into four triangles. Although these four triangles have two different shapes, the area of ​​each triangle is the same, which is also one of the solutions that can be selected by those skilled in the art.

[0062] See the simplified schematic diagram of the box for Fig.25 shown.

[0063] The rest is the same as Example 8.

[0064] Embodiment 13 In this embodiment, the length of the A-sheet grid bonding portion 30a is half of the length of the B-sheet long side plate 10b, and the A-sheet grid 40a is divided into two sections: a section connected to the A-sheet grid bonding portion 30a is half of the length of the A-sheet short side plate 20a, and a section connected to the A-sheet pasting portion 50a is half of the length of the B-sheet long side plate 10b, and the A-sheet pasting portion 50a is connected to the middle of the A-sheet short side plate 20a. In this way, the two sections of the A-sheet short side plate 20a, the A-sheet grid bonding portion 30a, and the A-sheet grid 40a are surrounded to form a small space that is half the length of the paper box and half the width of the paper box. Similarly, the two sections of the B-sheet short side plate 20b, the B-sheet grid bonding portion 30b, and the B-sheet grid 40b are surrounded to form another small space that is half the length of the paper box and half the width of the paper box.

[0065] As a result, after folding, the space in the paper box will be equally divided into four small rectangular spaces up and down and left and right, and the sizes of the spaces are the same.

[0066] See the simplified schematic diagram of the box for Fig.26 shown.

[0067] The rest is the same as Example 8.

[0068] Embodiment 8 and the scheme evolved from Embodiment 8 have one thing in common, that is, piece A and piece B are exactly the same. Therefore, the technical advantages of Embodiment 8 and the scheme evolved from Embodiment 8 include not only the technical advantages of Embodiment 1 and the scheme evolved from Embodiment 1, but also include: only one set of cutting molds needs to be designed, saving design costs; there is no need to consider the matching of different numbers of parts during production, optimizing the scheduling space; a single cutting piece makes storage and transportation more convenient, and feeding on the automatic box folding machine is simpler; according to design needs, the space inside the box can be divided into 3 or 4 parts, either equal or unequal, with equal or unequal areas, triangles or rectangles, which greatly improves the adaptability of the scene; the two grids can also be adaptively modified and used as buffer components in cushioning packaging, greatly expanding the application range of the 02 box type.

Claims

1. A double-cut carton with self-contained grid, characterized in that: Includes A film and B film; The A-sheet comprises a long area and a short area connected transversely, and one side of the A-sheet grid bonding portion (30a) and the A-sheet grid (40a) are sequentially connected transversely outwardly; the length of the A-sheet grid bonding portion (30a) is shorter than the length of the long area; and the length of the A-sheet grid (40a) matches that of the short area; The B piece includes a long area and a short area having the same position and length as the A piece.

2. The double-cut panel of a carton with self-contained grid according to claim 1, characterized in that: The height of each long flap of the A and B sheets is half the width of the short side wall.

3. A double-cut carton with self-contained grid according to claim 1 or 2, characterized in that: The heights of the flaps of sheet A and sheet B are equal.

4. A double-cut carton with self-contained grid according to claim 1 or 2, characterized in that: The height of the A-piece grid (40a) is equal to the height of the short side wall.

5. The double-cut panels of a carton with self-contained grid according to claim 4, characterized in that: The height of the A-sheet grid bonding portion (30a) is equal to the height of the A-sheet grid (40a).

6. A double-cut carton with self-contained grid according to claim 1 or 2, characterized in that: One lateral end of the A sheet is connected to the A sheet gluing portion (50a); the B sheet gluing portion (50b) is located on the same side of the B sheet.

7. A double-cut carton with self-contained grid according to claim 1 or 2, characterized in that: The length of the grid bonding portion (30a) of the A-sheet is less than half the length of the long area; the shape and size of the B-sheet are completely consistent with those of the A-sheet.

8. The double-cut panels of a carton with self-contained grid according to claim 7, characterized in that: The length of the A-piece grid bonding portion (30a) is 1 / 3 of the length of the long region.

9. An automatically formed double-cut carton, characterized in that: The carton is formed by folding the double panels of the carton with self-contained grid as claimed in claim 1.

10. The automatic double-cut carton according to claim 9, characterized in that: The shape and size of plate B are exactly the same as those of plate A.

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