Adhesive tape-free self-locking corrugated carton

Abstract

The utility model discloses a kind of corrugated carton exempt from adhesive tape and can be self-locked, it relates to corrugated carton technical field, including carton main body, two inner paper covers are connected on the carton main body, first outer paper cover and second outer paper cover are connected on the carton main body, the first outer paper cover and second outer paper cover are oppositely installed, and first outer paper cover and second outer paper cover and two inner paper covers can be bent and folded on carton main body, in the new model, through the layering insertion cooperation of U-shaped frame on inner paper cover and mounting hole, the first protruding paperboard of first outer paper cover, the second protruding paperboard of second outer paper cover, and the mutual clamping of first card paperboard and second card paperboard through symmetrical clamping slot, exempt from adhesive tape self-locking of corrugated carton is realized, packaging process is simplified, the dependence cost of adhesive tape is reduced, meanwhile, the partition plate in carton main body can realize article classified storage, improve use convenience.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard box technology, and in particular to a self-locking corrugated cardboard box that does not require tape. Background Technology

[0002] Corrugated cardboard is die-cut, creasing, and stapling or gluing to create corrugated boxes. Corrugated boxes are the most widely used packaging product, consistently ranking first in usage among all packaging materials. This includes calcium-plastic corrugated boxes. For over half a century, corrugated boxes have gradually replaced wooden crates and other transport packaging containers due to their superior performance and easy processing, becoming the mainstay of transport packaging. Besides protecting goods and facilitating warehousing and transportation, they also serve to beautify and promote products.

[0003] As a corrugated cardboard box manufacturer, our long-term production practice and market feedback have revealed several issues with current corrugated cardboard boxes that negatively impact user experience and production efficiency. For example, traditional corrugated cardboard box sealing largely relies on tape, which not only increases tape costs but also reduces sealing efficiency due to pasting and tearing operations, especially in bulk packaging where the time and labor costs are more pronounced. Furthermore, tape residue hinders the recycling of cardboard boxes, contradicting environmental trends. This problem not only reduces the product's market competitiveness but also fails to meet customers' demands for efficient, environmentally friendly, and convenient packaging, thus necessitating an improvement in the structure of corrugated cardboard boxes. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a tape-free, self-locking corrugated cardboard box, solving the technical problem that traditional corrugated cardboard box packaging mostly relies on tape, which not only increases the material cost of tape but also reduces packaging efficiency due to pasting, tearing, and other operations.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A self-locking corrugated cardboard box without tape includes a box body, two inner paper covers connected to the box body, a first outer paper cover and a second outer paper cover connected to the box body, the first outer paper cover and the second outer paper cover being installed opposite to each other, and the first outer paper cover, the second outer paper cover and the two inner paper covers can be bent and folded on the box body, and a U-shaped frame is fixedly installed on each of the two inner paper covers, and mounting holes are opened between the two U-shaped frames and the inner paper covers.

[0009] Preferably, a first raised cardboard is fixedly installed on the side end of the first outer paper cover, and a second raised cardboard is fixedly installed on the side end of the second outer paper cover. The first raised cardboard and the second raised cardboard are stacked together, and both the first raised cardboard and the second raised cardboard are installed in the mounting holes opened between the U-shaped frame and the inner paper cover.

[0010] Preferably, a first cardboard is fixedly installed on the side of the first outer paper cover, and a second cardboard is fixedly installed on the side of the second outer paper cover. Both the first and second cardboards have slots. The slots of the second and first cardboards are symmetrical about the center point of the carton body. The second and first cardboards are interlocked through the slots. A partition plate is provided inside the carton body.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this new invention, the mounting holes between the U-shaped frame fixedly installed on the inner paper cover and the inner paper cover, along with the first protruding cardboard on the side of the first outer paper cover and the second protruding cardboard on the side of the second outer paper cover, utilize the structure of their stacked installation and embedding into the mounting holes. This structure leverages the deformation characteristics of the corrugated cardboard itself to generate stable friction, achieving initial tight locking of the carton and providing a basic guarantee for a closed state. Simultaneously, the first cardboard on the side of the first outer paper cover and the second cardboard on the side of the second outer paper cover, combined with the slots symmetrically opened on both around the center point of the carton body, allow the two cardboards to interlock through the slots, forming a secondary reinforcement. The combined effect of these two locking structures completely achieves self-locking of the corrugated carton without tape. This not only eliminates the reliance on tape in traditional packaging, reducing packaging material costs and environmental pollution caused by tape use, but also simplifies the packaging process, improves packaging efficiency, and facilitates users in quickly completing the carton sealing operation. Attached Figure Description

[0013] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0014] Figure 1 This is a structural diagram of the entire utility model;

[0015] Figure 2 This is a structural diagram of the main body of the cardboard box of this utility model;

[0016] Figure 3 This is a structural diagram of the first outer paper cover of this utility model;

[0017] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A.

[0018] Legend: 1. First outer paper cover; 2. First cardboard; 3. First raised cardboard; 4. Second outer paper cover; 5. Second raised cardboard; 6. Second cardboard; 7. Card slot; 8. U-shaped frame; 9. Mounting hole; 10. Inner paper cover; 11. Carton body; 12. Divider. Detailed Implementation

[0019] This application provides a tape-free, self-locking corrugated cardboard box, effectively solving the technical problem that traditional corrugated cardboard box packaging mostly relies on tape, which not only increases the material cost of tape but also reduces packaging efficiency due to pasting, tearing, and other operations.

[0020] Example

[0021] like Figure 1-4 As shown, the technical solution in this application aims to effectively address the problem that traditional corrugated cardboard box packaging relies heavily on tape, which not only increases the material cost of the tape but also reduces packaging efficiency due to pasting and tearing operations. The overall approach is as follows:

[0022] To address the problems existing in the prior art, this utility model provides a self-locking corrugated cardboard box without tape, including a cardboard box body 11, two inner paper covers 10 connected to the cardboard box body 11, a first outer paper cover 1 and a second outer paper cover 4 connected to the cardboard box body 11, the first outer paper cover 1 and the second outer paper cover 4 being installed opposite to each other, and the first outer paper cover 1, the second outer paper cover 4 and the two inner paper covers 10 can all be bent and folded on the cardboard box body 11, and a U-shaped frame 8 is fixedly installed on each of the two inner paper covers 10, and mounting holes 9 are opened between the two U-shaped frames 8 and the inner paper covers 10.

[0023] like Figure 4 As shown, a first raised cardboard 3 is fixedly installed on the side of the first outer paper cover 1, and a second raised cardboard 5 is fixedly installed on the side of the second outer paper cover 4. The first raised cardboard 3 and the second raised cardboard 5 are stacked together, and both the first raised cardboard 3 and the second raised cardboard 5 are installed in the mounting hole 9 opened between the U-shaped frame 8 and the inner paper cover 10. When the corrugated carton is closed, the two inner paper covers 10 are first folded to the opening of the carton body 11, and then the first outer paper cover 1 and the second outer paper cover 4 are folded. At this time, the first raised cardboard 3 and the second raised cardboard 5 on the first outer paper cover 1 and the second outer paper cover 4 can be installed in the mounting hole 9 opened between the U-shaped frame 8 and the inner paper cover 10. Since the second raised cardboard 5 and the first raised cardboard 3 are stacked together, they can fill the inside of the mounting hole 9 and generate a large friction force, thereby initially locking the corrugated carton.

[0024] A first cardboard 2 is fixedly installed on the side of the first outer paper cover 1, and a second cardboard 6 is fixedly installed on the side of the second outer paper cover 4. Both the first cardboard 2 and the second cardboard 6 have slots 7. The slots 7 of the second cardboard 6 and the first cardboard 2 are symmetrical about the center point of the carton body 11. The second cardboard 6 and the first cardboard 2 are interlocked through the slots 7. By twisting the first cardboard 2 and the second cardboard 6 due to the deformable nature of the corrugated carton, the slots 7 of the first cardboard 2 and the second cardboard 6 are brought together, thus completing the interlocking. At this time, the corrugated carton is completely self-locking and does not need to be closed with tape.

[0025] The cardboard box body 11 is provided with a divider 12, which is used for classifying items and can be removed from the cardboard box body 11.

[0026] Working principle:

[0027] The first step, when closing the corrugated cardboard box, is to bend and fold the two inner paper covers 10 toward the opening of the main body 11 of the cardboard box so that they cover the inside of the opening, providing basic support for the subsequent locking structure.

[0028] The second step involves bending and folding the first outer paper cover 1 and the second outer paper cover 4 towards the opening of the carton body 11. At this time, the first raised cardboard 3 on the side of the first outer paper cover 1 and the second raised cardboard 5 on the side of the second outer paper cover 4 move synchronously with the folding of the outer paper covers, ultimately embedding themselves into the mounting holes 9 opened between the U-shaped frame 8 and the inner paper cover 10. Because the first raised cardboard 3 and the second raised cardboard 5 are installed in a stacked manner, they can tightly fill the internal space of the mounting holes 9, utilizing the deformation characteristics of the corrugated cardboard itself to generate significant friction, thus achieving initial self-locking of the carton.

[0029] Thirdly, after the first outer paper cover 1 and the second outer paper cover 4 are folded into place, the first cardboard 2 and the second cardboard 6 on their sides are naturally positioned outside the opening of the carton. Utilizing the deformable nature of corrugated cardboard, the first cardboard 2 and the second cardboard 6 are twisted so that the slots 7 (symmetrically distributed around the center point of the carton body 11) on them align and engage with each other. Through the interlocking action of the slots 7, the closed state of the carton is further reinforced, achieving complete self-locking and completing the closure without relying on tape.

[0030] In addition, the dividers 12 inside the carton body 11 can be placed or removed according to the storage needs of the items, so as to classify and separate the items inside the box and avoid the items from colliding and being damaged during transportation or storage.

[0031] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A self-locking corrugated cardboard box that requires no tape, comprising a box body (11), characterized in that: The carton body (11) is connected to two inner paper covers (10), and the carton body (11) is connected to a first outer paper cover (1) and a second outer paper cover (4). The first outer paper cover (1) and the second outer paper cover (4) are installed opposite to each other. The first outer paper cover (1), the second outer paper cover (4) and the two inner paper covers (10) can be bent and folded on the carton body (11). A U-shaped frame (8) is fixedly installed on each of the two inner paper covers (10), and an installation hole (9) is opened between the two U-shaped frames (8) and the inner paper covers (10).

2. The self-locking corrugated cardboard box without tape according to claim 1, characterized in that: The first outer paper cover (1) has a first protruding cardboard (3) fixedly installed on its side end, and the second outer paper cover (4) has a second protruding cardboard (5) fixedly installed on its side end.

3. A self-locking corrugated cardboard box without tape according to claim 2, characterized in that: The first raised cardboard (3) and the second raised cardboard (5) are stacked together.

4. A self-locking corrugated cardboard box without tape according to claim 3, characterized in that: The first raised cardboard (3) and the second raised cardboard (5) are both installed in the mounting hole (9) opened between the U-shaped frame (8) and the inner paper cover (10).

5. A self-locking corrugated cardboard box without tape according to claim 4, characterized in that: The first outer paper cover (1) is fixedly installed with a first cardboard (2) on its side, and the second outer paper cover (4) is fixedly installed with a second cardboard (6) on its side.

6. A self-locking corrugated cardboard box without tape according to claim 5, characterized in that: The first cardboard (2) and the second cardboard (6) are both provided with card slots (7), and the card slots (7) provided on the second cardboard (6) and the first cardboard (2) are symmetrical about the center point of the carton body (11).

7. A self-locking corrugated cardboard box without tape according to claim 6, characterized in that: The second cardboard (6) and the first cardboard (2) are interlocked by the card slots (7).

8. A self-locking corrugated cardboard box without tape according to claim 7, characterized in that: The carton body (11) is provided with a partition (12).

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