A seamless lid box

Abstract

The utility model relates to the field of top and bottom covers, and discloses a seamless top and bottom cover box, wherein the box body comprises a bottom plate, a side support plate 1 is arranged at the front and rear of the bottom plate, and a side support plate 2 is arranged at the left and right sides, the side support plate 1 and the side support plate 2 extend to every two adjacent sides of the bottom plate, a folding plate 1 extends at the outside of the side support plate 1, and a folding plate 2 extends at the outside of the side support plate 2; folding ears are arranged at the left and right sides of the side support plate 1, and a limiting card slot is arranged at the side support plate 2 adjacent to it, and the shape and position of the limiting card slot are matched with the folding ears, and when the box body is in a boxed state, the folding ears are engaged in the limiting card slot, and the outer surface of the folding ears is in contact with the surface paper layer under the limiting card slot. When the box body of the utility model is folded, it is only necessary to spray glue to lock and fix the folding ears of the gray board with the limiting card slot, and to fit and fix the folding plates with the support plates; it is convenient and fast, and has high molding efficiency, and can reduce the manual work or equipment to paste the gray board into a blank box.

Description

Technical Field

[0001] The utility model relates to the field of top and bottom covers, in particular to a seamless top and bottom cover box. Background Art

[0002] The top and bottom lid box is a type of box that is mainly formed by pasting gray board and facial tissue. In the existing production method of the top and bottom lid box, the gray board is die-cut and the facial tissue is first slotted and folded to form a blank box, and then the blank box and facial tissue are transported separately, and glue is sprayed on the facial tissue over a large area, and then the facial tissue is wrapped on the outside of the blank box. The box is positioned in the box pressing device to press the facial tissue and the blank box, and then it goes through multiple vertical edge pressing, ear folding, and bubble pressing procedures. In the traditional production process, the gray board after die-cutting must be pasted with corners by manual or semi-automatic auxiliary equipment, otherwise the subsequent process production cannot be carried out. For this reason, the company needs to paste the gray board in advance. This practice leads to low production efficiency. The four corners are pasted, which does not meet the current global environmental trend of restricting the use of plastics. In addition, it is difficult to pick out the transparent tape during the recycling of discarded packaging boxes, resulting in increased social recycling costs. At the same time, since the corners of the blank box are partially fitted instead of the entire blank box, there is a height difference. After the top and bottom lid boxes are formed, traces of tape can be vaguely seen on the sides of the four sides, affecting the aesthetics of the gift box packaging.

[0003] For example, the Chinese utility model patent with publication number CN214294679U and titled "A kind of automatic forming equipment for a top and bottom lid box" discloses another method for forming a top and bottom lid box, as shown in paragraphs 30-33 of its specification, "The automatic forming equipment for a top and bottom lid box comprises a cardboard conveying device (not shown in the figure) and a slide rail 2 arranged above the cardboard conveying device, a plurality of rotating arms 3 are slidably arranged on the slide rail 2, and a suction die pressing device 4 for sucking and forming the cardboard 100 is arranged on the rotating arm 3. The suction die pressing device 4 is controlled to move by the rotating arm 3 on the slide rail 2 and move at any angle, position and height, and then the suction die pressing device 4 sucks the cardboard 100 and folds the cardboard 100 into a box blank 200." This method requires additional positioning of the corner parts of the suction die pressing device, and adding a negative pressure device will increase the production cost and operation cost of the equipment. Although the problem of manual work required for corner pasting is solved, its production efficiency will also be relatively slow.

[0004] On the one hand, the traditional top and bottom lid boxes do not have an unfolded state, nor can they be directly boxed from the unfolded state; because the gray board needs to be pre-pasted to form a blank box, the box pasting process consumes a lot of manpower, and if equipment is used, the process is also very cumbersome and costly. On the other hand, the bonding of the gray board and the facial tissue requires the help of a box-forming device, which requires a downward pressure channel to wrap the gray board-formed blank box outside the mold, and then press the facial tissue outside the blank box. The cost of the forming device and the mold cost are both high, because the bonding has at least 5 planes, and positioning is also very troublesome. Some subsequent bubble pressing devices are required to discharge the bubbles between the facial tissue and the blank box. The whole process is very cumbersome.

[0005] In order to solve the above problems, a top and bottom cover box with a different structure is needed, which has good strength and can be easily formed by a corresponding forming device. Summary of the invention

[0006] The utility model aims at the shortcomings of the prior art and provides a seamless top and bottom cover box.

[0007] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0008] A seamless top and bottom lid box, comprising a box body having an unfolded state and a boxed state, the box body comprising a bottom plate, a first side support plate is arranged at the front and rear of the bottom plate, a second side support plate is arranged at the left and right of the bottom plate, the first side support plate and the second side support plate extend to every two adjacent sides of the bottom plate, a first folding plate extends outside the first side support plate, and a second folding plate extends outside the second side support plate;

[0009] The box body in the unfolded state has a face paper layer and a gray board layer that are attached to each other. The inner side of the face paper layer is a face paper inner plane for attaching to the gray board layer, and the inner side of the gray board layer is a gray board inner plane. There is a height difference between the face paper inner plane and the gray board inner plane.

[0010] The left and right sides of the side support plate 1 are provided with folding ears, and the side support plate 2 adjacent thereto is provided with a limiting slot, the shape and position of the limiting slot are matched with the folding ears, the slot bottom of the limiting slot is a surface paper layer, and the edge of the limiting slot is formed on the gray board layer. When the box body is in a boxed state, the folding ears are engaged in the limiting slot, the outer surface of the folding ears is in contact with the surface paper layer under the limiting slot, and the inner surface of the folding ears is flush with the edge of the limiting slot or protrudes from the inner plane of the gray board layer of the side support plate 2. After the limiting slot and the folding ears are matched, the thickness of each part of the top and bottom cover box is consistent, and since there is no need to paste corners, no corners protruding from the gray board of other parts will be produced on the top, so that no traces can be achieved, thereby improving the aesthetics of the top and bottom cover box.

[0011] Preferably, the grey board layers of the side support plate and the bottom plate are completely covered with a surface paper layer, and the grey board layer of the folding plate is covered with a surface paper layer at least in a portion close to the side support plate.

[0012] Preferably, the gray plate layer of at least one folding plate is provided with iron sheet holes.

[0013] Preferably, the size of the folding plate matches the side support plate connected thereto, so that when any folding plate is folded into the side support plate, the folding plate covers the entire inner surface of the side support plate.

[0014] Preferably, V-shaped grooves for folding the side support plates and the folding plates inwards are provided between the side support plates and the bottom plate, and between the side support plates and the folding plates connected thereto.

[0015] Preferably, glue is applied in the V-shaped groove between the side support plate and the bottom plate, so that the side support plate stands upright around the bottom plate when the box body is formed.

[0016] Preferably, the folded ear is fixed to the surface paper layer under the limiting card slot by glue.

[0017] As a preferred embodiment, the utility model has significant technical effects due to the adoption of the above technical solution:

[0018] When folding the unfolded box, you only need to spray glue to lock and fix the folding ears of the gray board with the limit slots, and fit the folding board with the support board. It is convenient and fast, with high molding efficiency, and can reduce manual work or equipment to paste the gray board into a blank box.

[0019] There is no need for additional corner pasting and positioning molding. Instead, a folding ear of the side support is inserted into the card slot between the face paper of the adjacent side support board and the gray board layer of the folding board. The inner and outer sides of the folding angle have vertical planes. The extrusion of the two inner and outer planes can fully lock the folding ear to achieve the corner reinforcement of the box body, forming a fixing force in different directions, making the box body more stable. In addition, since there is no need for corner pasting, the inner and outer planes of the box body are flat, and the box body is more beautiful.

[0020] By adding glue to the grooved fold line, the edges of the side of the box body after the box is folded and formed can be reinforced to further stabilize the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a front structural schematic diagram of the utility model in an unfolded state.

[0023] Figure 3 It is a schematic diagram of the back structure of the utility model in an unfolded state.

[0024] Figure 4 It is a schematic diagram of the box folding process of the utility model.

[0025] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. bottom plate; 2. side support plate (201, side support plate one; 202, side support plate two); 3. folding plate (301, folding plate one; 302, folding plate two); 4. surface paper layer; 41, edge wrapping; 5. gray board layer; 6. folding ear; 7. limit card slot; 8. iron sheet hole; 9. V-shaped groove. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Example

[0027] A seamless top and bottom cover box, such as Figure 1-4 As shown, the box body has an unfolded state and a boxed state, the box body includes a bottom plate 1, a side support plate 1 201 is arranged at the front and rear of the bottom plate 1, and a side support plate 202 is arranged at the left and right sides, the side support plate 1 201 and the side support plate 202 extend to every two adjacent sides of the bottom plate 1, a folding plate 1 301 extends outside the side support plate 1 201, and a folding plate 2 302 extends outside the side support plate 202;

[0028] The box body in the unfolded state has a face paper layer 4 and a gray board layer 5 that fit together. The inner side of the face paper layer 4 is a face paper inner plane for fitting with the gray board layer 5. The inner side of the gray board layer 5 is a gray board inner plane. There is a height difference between the face paper inner plane and the gray board inner plane.

[0029] Folding ears 6 are provided on the left and right sides of the side support plate 1 201, and a limiting slot 7 is provided on the adjacent side support plate 202. The shape and position of the limiting slot 7 match the folding ears 6. The bottom of the limiting slot 7 is the face paper layer 4, and the edge of the limiting slot 7 is formed on the gray board layer 5. When the box body is in a boxed state, the folding ears 6 are engaged in the limiting slot 7, and the outer surface of the folding ears 6 is in contact with the face paper layer 4 under the limiting slot 7, and the inner surface of the folding ears 6 is flush with the edge of the limiting slot 7 or protrudes from the inner plane of the gray board layer 5 of the side support plate 202.

[0030] The gray board layers 5 of the side support plate 2 and the bottom plate 1 are completely covered with a surface paper layer 4 , and the gray board layer 5 of the folding plate 3 is covered with a surface paper layer 4 at least in the portion close to the side support plate 2 .

[0031] The gray board layer 5 of at least one folding board 3 is provided with iron sheet holes 8 .

[0032] The size of the folding plate 3 matches the side support plate 2 connected thereto, so that when any folding plate 3 is folded into the side support plate 2 , the folding plate 3 covers the entire inner surface of the side support plate 2 .

[0033] V-shaped grooves 9 for folding the side support plates 2 and the folding plates 3 inwards are provided between the side support plates 2 and the bottom plate 1 and between the side support plates 2 and the folding plates 3 connected thereto.

[0034] Glue is applied in the V-shaped groove 9 between the side support plate 2 and the bottom plate 1 so that the side support plate 2 stands upright around the bottom plate when the box body is formed.

[0035] The folded ear 6 is fixed to the surface paper layer 4 under the limiting slot 7 by glue.

[0036] Working principle: The steps for forming the box body in the unfolded state are as follows:

[0037] Ⅰ. Die-cutting the grey board layer 5 and forming the limit slot 7 at the same time;

[0038] Ⅱ. Apply glue on the surface paper layer 4 and attach the gray board layer 5 to the surface paper layer 4;

[0039] III. Cut the surface paper layer 4;

[0040] IV. Use a slotting machine to slot the gray board layer 5 horizontally and vertically to form a folding groove 9 between the bottom plate 1 and the side support plate 1 201, a folding groove 9 between the bottom plate 1 and the side support plate 202, a folding groove 9 between the folding plate 1 301 and the side support plate 1 201, and a folding groove 9 between the folding plate 2 302 and the side support plate 202;

[0041] V. Apply glue to the inner surface of the folding plate 301 gray plate layer 5;

[0042] The order of step II, step III, and step IV can be arbitrarily changed;

[0043] The steps for forming the box body from the unfolded state are as follows:

[0044] A. The front and rear side support plates 201 are folded upward along the fold line between the bottom plate 1 and the side support plates 201. The side support plates 201 are vertically erected on the front and rear sides of the bottom plate 1, and the folding ears 6 on the left and right sides of each side support plate 201 are folded inward;

[0045] B. The left and right side support plates 202 are folded upward along the fold line between the bottom plate 1 and the side support plates 202, and the side support plates 202 are covered on the outside of the folding ears 6, so that the folding ears 6 are engaged in the limiting slots 7, and the outer surface of the folding ears 6 is in contact with the surface paper layer 4 under the limiting slots 7;

[0046] C. The left and right folding plates 302 are folded inward along the folding line between the folding plate 302 and the side support plate 202, so that the gray board layer 5 of the folding plate 302 fits with the gray board layer 5 of the side support plate 202;

[0047] D. The front and rear folding plates 301 are folded inward along the folding line between the folding plate 301 and the side support plate 201, so that the gray plate layer 5 of the folding plate 301 is in contact with the gray plate layer 5 of the side support plate 201;

[0048] Wherein, step D is completed before or after any step A, B, or C.

[0049] In step D, after the folding plate 1 301 is folded, the surfaces on both sides of the folding ear 6 overlap with the gray board layer 5 of the folding plate 2 302 and the surface paper layer 4 of the side support plate 202 respectively, and the surface paper layer 4 of the limiting slot 7 of the side support plate 202 is coated with glue to fix the folding ear 6 to the surface paper layer 4 of the side support plate 202.

[0050] Furthermore, the method further comprises step VI, gluing the folding groove 9 opened in step IV, and step VI is performed before or after step V or simultaneously with step V.

[0051] Furthermore, the method further comprises step VII, applying glue to the surface paper layer 4 under the limiting slot 7, and the order of step V, step VI and step VII can be arbitrarily changed.

[0052] In step IV, when the slotting machine slots the gray board layer 5, it also slots between the side support plate 201 and the folding ear 6.

[0053] In step I, the gray board layer 5 is die-cut and iron sheet holes 8 are formed at the same time.

[0054] After step II or step III is completed, the outer edge portions of the surface paper layer 4 on the gray board layer 5 of the folding plate 1 301 and the gray board layer 5 of the side support plate 2 202 are folded inwards to form an edge wrapping 41 .

[0055] In the description of the present utility model, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0056] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A seamless top and bottom cover box, comprising A box body having an unfolded state and a boxed state, the box body comprising a bottom plate (1), a first side support plate (201) being arranged at the front and rear of the bottom plate (1), and a second side support plate (202) being arranged at the left and right, the first side support plate (201) and the second side support plate (202) extending from every two adjacent sides of the bottom plate (1), a first folding plate (301) extending from the outer side of the first side support plate (201), and a second folding plate (302) extending from the outer side of the second side support plate (202); The box body in the unfolded state has a face paper layer (4) and a gray board layer (5) that are bonded to each other, the inner side of the face paper layer (4) is a face paper inner plane for bonding to the gray board layer (5), the inner side of the gray board layer (5) is a gray board inner plane, and there is a height difference between the face paper inner plane and the gray board inner plane; Features: The left and right sides of the side support plate 1 (201) are provided with folding ears (6), and the side support plate 2 (202) adjacent thereto is provided with a limiting slot (7), the shape and position of the limiting slot (7) are matched with the folding ears (6), the slot bottom of the limiting slot (7) is a surface paper layer (4), and the edge of the limiting slot (7) is formed on the gray board layer (5), when the box body is in a boxed state, the folding ears (6) are engaged in the limiting slot (7), the outer surface of the folding ears (6) is in contact with the surface paper layer (4) under the limiting slot (7), and the inner surface of the folding ears (6) is flush with the edge of the limiting slot (7) or protrudes from the inner plane of the gray board layer (5) of the side support plate 2 (202).

2. The seamless top and bottom cover box according to claim 1, characterized in that: The gray board layers (5) of the side support plate (2) and the bottom plate (1) are completely covered with a surface paper layer (4), and the gray board layer (5) of the folding plate (3) is covered with a surface paper layer (4) at least in a portion close to the side support plate (2).

3. The seamless top and bottom cover box according to claim 1, characterized in that: The gray plate layer (5) of at least one folding plate (3) is provided with an iron sheet hole (8).

4. The seamless top and bottom cover box according to claim 1, characterized in that: The size of the folding plate (3) matches the side support plate (2) connected thereto, so that when any folding plate (3) is folded into the side support plate (2), the folding plate (3) covers the entire inner surface of the side support plate (2).

5. The seamless top and bottom cover box according to claim 1, characterized in that: V-shaped grooves (9) for folding the side support plate (2) and the folding plate (3) inwards are provided between the side support plate (2) and the bottom plate (1), and between the side support plate (2) and the folding plate (3) connected thereto.

6. The seamless top and bottom cover box according to claim 5, characterized in that: Glue is applied in the V-shaped groove (9) between the side support plate (2) and the bottom plate (1), so that the side support plate (2) stands upright around the bottom plate when the box body is formed.

7. The seamless top and bottom cover box according to claim 1, characterized in that: The folded ears (6) are fixed to the surface paper layer (4) below the limiting slot (7) by glue.

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