A glue-free self-locking structure for corrugated carton production

Abstract

The utility model relates to corrugated case technical field especially discloses a kind of glue-free self-locking structure for corrugated case production, comprising: coaming, the top surface and bottom surface of coaming are provided with cover plate, multiple paper tubes are fixedly installed in coaming, multiple paper tubes are fixedly installed with installation cylinder in;Worker is manually aligned and pushes cover plate to coaming direction close, right circular conical slider first enters the inner cavity of circular mounting block, its conical outer side wall is contacted with the inclined surface of limit plate and generates extrusion, under the guiding effect of conical structure, two limit plates slide along square groove to two sides, while the first reset spring in interior is compressed, reserve space for subsequent insertion, with cover plate continuously advancing, inverted conical slider slides along support rod and compresses second reset spring, until the limit slot between right circular conical slider and inverted conical slider moves to limit plate, at this time, the first reset spring rebounds, and pushes two limit plates to be clamped into limit slot, and forms self-locking.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard box technology, and in particular to a glue-free self-locking structure for corrugated cardboard box production. Background Technology

[0002] Corrugated boxes are rigid paper boxes made from corrugated cardboard through processes such as die-cutting, creasing, stapling, or gluing. They are currently the most widely used packaging material in the world, and are extensively used in the transportation and storage of various commodities. Corrugated cardboard is the main raw material for corrugated boxes. It is made by bonding one or more layers of corrugated core paper (corrugated paper) with one or more layers of flat face paper and liner paper. Depending on the flute type, corrugated paper is divided into types such as A, B, C, E, and F. Corrugated cardboard with different flute types has different performance characteristics and can meet the packaging needs of different products.

[0003] In the corrugated cardboard box industry, the locking structure of the side panels and cover directly affects the reliability and practicality of packaging. Although adhesives can fix them, the cured corrugated cardboard box cannot be disassembled and reassembled. Moreover, the chemicals contained in the adhesive may contaminate the packaged product, and the process is inefficient. Simple mechanical locking structures lack positioning guidance, requiring workers to repeatedly align the connection points, which is time-consuming and labor-intensive. The locking stability is insufficient, and the boxes are prone to loosening under external forces such as vibration and compression, making them unsuitable for heavy cargo transportation. A few detachable structures rely on external parts such as bolts, requiring tools and complicated procedures, which greatly affects the work efficiency of packing corrugated cardboard boxes. In view of this, we propose a glue-free self-locking structure for corrugated cardboard box production. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a glue-free self-locking structure for corrugated cardboard box production. This solves the problem that in the corrugated cardboard box industry, the locking structure of the side panels and cover directly affects the reliability and practicality of packaging. Although adhesives can fix the boxes, the cured corrugated cardboard boxes cannot be disassembled and reassembled, and the chemicals in the adhesives may contaminate the packaged products. Furthermore, the simple mechanical locking structure lacks positioning guidance, requiring workers to repeatedly align the connection points, which is time-consuming and labor-intensive. The locking stability is insufficient, and the boxes are easily loosened by external forces such as vibration and compression, making them unsuitable for heavy cargo transportation. A few detachable structures rely on external components such as bolts, requiring tools and involving cumbersome procedures, significantly impacting the efficiency of packing corrugated cardboard boxes.

[0006] Technical solution

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

[0008] A glue-free self-locking structure for corrugated cardboard box production includes:

[0009] A partition panel, wherein the top and bottom surfaces of the partition panel are provided with cover plates, the outer side wall of the partition panel is in contact with the inner side walls of the two cover plates respectively, and multiple paper tubes are fixedly installed inside the partition panel. The multiple paper tubes are evenly distributed, and each of the multiple paper tubes is fixedly installed with an installation cylinder.

[0010] Multiple sets of mounting components are respectively disposed at both ends of multiple mounting cylinders and on the inner top surface of two cover plates, and are used for quick installation or removal of the two cover plates.

[0011] Preferably, the mounting assembly includes a circular mounting block, which is fixedly mounted on one end of the mounting cylinder. Two square grooves are formed inside the circular mounting block. A first reset spring is fixedly mounted on one side of each of the two square grooves. A limit plate is fixedly mounted on the opposite end of each of the two first reset springs. The outer sidewalls of the two limit plates are slidably connected to the inner sidewalls of the two square grooves, respectively.

[0012] Preferably, the mounting assembly further includes a circular fixing plate, which is fixedly installed on the inner top surface of one of the cover plates. A support rod is fixedly installed at one end of the circular fixing plate, and a circular conical slider is fixedly installed at one end of the support rod. An inverted conical slider is provided above the circular conical slider. The inner sidewall of the inverted conical slider is slidably connected to the outer sidewall of the support rod. Both the circular conical slider and the inverted conical slider are sleeved with the inner cavity of the circular mounting block. The opposite ends of the two limiting plates are both inclined surfaces. One end of the two limiting plates is slidably engaged with the outer sidewall of the inverted conical slider and the circular conical slider. A limiting groove is provided between the circular conical slider and the inverted conical slider. One end of both limiting plates is sleeved with the inside of the limiting groove.

[0013] Preferably, the outer wall of the support rod is provided with a second return spring, one end of the second return spring is fixedly connected to the outer wall of the circular fixing plate, and the other end of the second return spring is fixedly connected to the outer wall of the inverted conical slider.

[0014] Preferably, two mounting rods are fixedly installed at one end of the circular fixing plate, the two mounting rods are located on both sides of the support rod, and one end of the two mounting rods is in contact with the outer wall of the inverted conical slider.

[0015] Preferably, anti-slip strips are fixedly installed on both the top and bottom surfaces of the enclosure, and the two anti-slip strips respectively contact the inner top surfaces of the two cover plates.

[0016] Preferably, the inner walls of the enclosure and the two cover plates are provided with a waterproof membrane.

[0017] Beneficial effects

[0018] 1. During assembly, the worker first aligns the cover plate with the circular fixing plate with the top or bottom surface of the enclosure, ensuring that the support rod, conical slider, and inverted conical slider on the inner side of the cover plate are coaxially aligned with the circular mounting block at the end of the mounting cylinder inside the enclosure. At this point, the anti-slip strip on the top surface of the enclosure contacts the inner side of the cover plate, initially providing positioning and anti-slip protection. After manual alignment, the worker pushes the cover plate towards the enclosure. The conical slider first enters the inner cavity of the circular mounting block, and its conical outer wall contacts and compresses the inclined surface of the limiting plate. Under the guidance of the structure, the two limiting plates slide to both sides along the square groove, while compressing the first return spring inside, reserving space for subsequent insertion. As the cover plate continues to advance, the inverted conical slider slides along the support rod and compresses the second return spring until the limiting groove between the regular conical slider and the inverted conical slider moves to the limiting plate. At this time, the first return spring rebounds, pushing the two limiting plates into the limiting groove to form a self-locking mechanism. At the same time, the mounting rod supports the inverted conical slider to prevent it from excessively shifting and to ensure the stability of the lock.

[0019] 2. When it is necessary to remove the cover plate, the worker presses the cover plate down continuously with both hands. The pressing force drives the two mounting rods to move inward to further compress the second return spring. At this time, under the compression of the second return spring, the inverted conical slider slides along the support rod towards the right conical slider. Its conical surface presses against the inclined surface of the limiting plate, forcing the limiting plate to compress the first return spring and exit the limiting groove. As the limiting plate separates from the limiting groove, the support rod drives the cover plate to be pulled out from the circular mounting block, realizing unlocking. Each spring assembly returns to its initial state, and the structure can be reused for subsequent assembly. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is an unfolded structural diagram of one of the cover plates of this utility model;

[0023] Figure 3 This is a structural diagram of the inner top surface of the cover plate of this utility model;

[0024] Figure 4 This is a structural diagram of the inner top surface of the enclosure panel of this utility model;

[0025] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0026] Legend: 1. Enclosure; 2. Cover plate; 3. Anti-slip strip; 4. Paper tube; 5. Mounting tube; 6. Circular mounting block; 7. First return spring; 8. Limiting plate; 9. Circular fixing plate; 10. Support rod; 11. Right circular conical slider; 12. Inverted conical slider; 13. Mounting rod; 14. Second return spring. Detailed Implementation

[0027] Example 1:

[0028] Please see Figure 1 - Figure 5 As shown, this embodiment provides a glue-free self-locking structure for corrugated cardboard box production.

[0029] include:

[0030] A partition panel 1 has cover plates 2 on both its top and bottom surfaces. The outer sidewalls of the partition panel 1 contact the inner sidewalls of the two cover plates 2. Multiple paper tubes 4 are fixedly installed inside the partition panel 1, and the multiple paper tubes 4 are evenly distributed. Each of the multiple paper tubes 4 has a mounting cylinder 5 fixedly installed inside it. Multiple sets of mounting components are respectively located at both ends of the multiple mounting cylinders 5 and on the inner top surface of the two cover plates 2, and are used for quick installation or removal of the two cover plates 2. When assembling, the worker first aligns the cover plate 2 with the circular fixing plate 9 with the top or bottom surface of the partition panel 1. Align the support rod 10, the conical slider 11, and the inverted conical slider 12 on the inner side of the cover plate 2 with the circular mounting block 6 at the end of the mounting cylinder 5 inside the enclosure plate 1. At this time, the anti-slip rubber strip 3 on the top surface of the enclosure plate 1 contacts the inner side of the cover plate 2, initially providing positioning and anti-slip function. After manual alignment, the worker pushes the cover plate 2 closer to the enclosure plate 1. The conical slider 11 first enters the inner cavity of the circular mounting block 6, and its conical outer wall contacts and compresses the inclined surface of the limiting plate 8. Under the guidance of the conical structure, the two limiting plates 8 slide to both sides along the square groove, while compressing the interior. The first return spring 7 provides space for subsequent insertion. As the cover plate 2 continues to advance, the inverted conical slider 12 slides along the support rod 10 and compresses the second return spring 14 until the limiting groove between the regular conical slider 11 and the inverted conical slider 12 moves to the limiting plate 8. At this time, the first return spring 7 rebounds, pushing the two limiting plates 8 into the limiting groove to form a self-locking mechanism. At the same time, the mounting rod 13 supports the inverted conical slider 12 to prevent excessive displacement and ensure stable locking. When it is necessary to remove the cover plate 2, the worker presses the cover down continuously with both hands. The pressing force of plate 2 drives the two mounting rods 13 to move inward continuously, further compressing the second return spring 14. At this time, under the compression of the second return spring 14, the inverted conical slider 12 slides along the support rod 10 towards the right conical slider 11. Its conical surface presses against the inclined surface of the limiting plate 8, forcing the limiting plate 8 to compress the first return spring 7 and exit the limiting groove. As the limiting plate 8 disengages from the limiting groove, the support rod 10 drives the cover plate 2 to be pulled out from the circular mounting block 6, realizing unlocking. Each spring assembly returns to its initial state, and the structure can be reused for subsequent assembly.

[0031] Example 2:

[0032] This embodiment provides a glue-free self-locking structure for corrugated cardboard box production. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0033] The installation assembly includes a circular mounting block 6, which is fixedly installed at one end of the mounting cylinder 5. Two square slots are formed inside the circular mounting block 6. A first return spring 7 is fixedly installed on one side of each of the two square slots. A limit plate 8 is fixedly installed on the opposite end of each of the two first return springs 7. The outer sidewalls of the two limit plates 8 are slidably connected to the inner sidewalls of the two square slots. After the worker manually aligns them, he pushes the cover plate 2 toward the surrounding plate 1. The conical slider 11 first enters the inner cavity of the circular mounting block 6. Its conical outer sidewall contacts the inclined surface of the limit plate 8 and generates compression. Under the guidance of the conical structure, the two limit plates 8 slide along the square slots to both sides, while compressing the first return spring 7 inside, reserving space for subsequent insertion.

[0034] Example 3:

[0035] This embodiment provides a glue-free self-locking structure for corrugated cardboard box production. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0036] The mounting assembly also includes a circular fixing plate 9, which is fixedly installed on the inner top surface of one of the cover plates 2. A support rod 10 is fixedly installed at one end of the circular fixing plate 9, and a circular conical slider 11 is fixedly installed at one end of the support rod 10. An inverted conical slider 12 is provided above the circular conical slider 11. The inner side wall of the inverted conical slider 12 is slidably connected to the outer side wall of the support rod 10. Both the circular conical slider 11 and the inverted conical slider 12 are sleeved and fitted into the inner cavity of the circular mounting block 6. The opposite ends of the two limiting plates 8 are both inclined surfaces. One end of the two limiting plates 8 is connected to the inverted conical slider 12 and the circular conical slider 12. The outer wall of the conical slider 11 is slidably fitted. A limiting groove is provided between the circular conical slider 11 and the inverted conical slider 12. One end of each of the two limiting plates 8 is sleeved with the inside of the limiting groove. As the cover plate 2 continues to advance, the inverted conical slider 12 slides along the support rod 10 and compresses the second return spring 14 until the limiting groove between the circular conical slider 11 and the inverted conical slider 12 moves to the limiting plate 8. At this time, the first return spring 7 rebounds and pushes the two limiting plates 8 into the limiting groove to form a self-locking mechanism. At the same time, the mounting rod 13 supports the inverted conical slider 12 to prevent it from deviating excessively and to ensure the stability of the lock.

[0037] Example 4:

[0038] This embodiment provides a glue-free self-locking structure for corrugated cardboard box production. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0039] The support rod 10 has a second return spring 14 on its outer side wall. One end of the second return spring 14 is fixedly connected to the outer side wall of the circular fixing plate 9, and the other end of the second return spring 14 is fixedly connected to the outer side wall of the inverted conical slider 12. When the inverted conical slider 12 is subjected to external force and slides along the support rod 10, the second return spring 14 will be compressed or stretched, thereby generating a corresponding elastic force. This elastic force not only helps the inverted conical slider 12 to return to its original position after sliding, but also buffers the impact of external force on the overall structure to a certain extent, thereby improving the stability and durability of the entire glue-free self-locking structure.

[0040] Example 5:

[0041] This embodiment provides a glue-free self-locking structure for corrugated cardboard box production. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0042] Two mounting rods 13 are fixedly installed at one end of the circular fixing plate 9. The two mounting rods 13 are located on both sides of the support rod 10. One end of the two mounting rods 13 contacts the outer wall of the inverted conical slider 12. The contact design between the mounting rods 13 and the outer wall of the inverted conical slider 12 allows the mounting rods 13 to play a certain guiding role when the inverted conical slider 12 slides, further ensuring the accuracy and reliability of the entire glue-free self-locking structure.

[0043] Example 6:

[0044] This embodiment provides a glue-free self-locking structure for corrugated cardboard box production. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0045] Among them, anti-slip rubber strips 3 are fixedly installed on the top and bottom surfaces of the enclosure 1. The two anti-slip rubber strips 3 are in contact with the inner top surfaces of the two cover plates 2 respectively. The anti-slip rubber strips 3 fill the gap between the enclosure 1 and the cover plate 2 to reduce the intrusion of water vapor and dust.

[0046] Example 7:

[0047] This embodiment provides a glue-free self-locking structure for corrugated cardboard box production. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0048] The inner walls of the enclosure 1 and the two cover plates 2 are all provided with waterproof membranes. The waterproof membranes on the inner sides of the enclosure 1 and the cover plates 2 further enhance the waterproof performance and are suitable for packaging items in humid environments.

[0049] Working principle: During assembly, the worker first aligns the cover plate 2 with the circular fixing plate 9 with the top or bottom surface of the enclosure plate 1, so that the support rod 10, the right circular conical slider 11, and the inverted conical slider 12 on the inner side of the cover plate 2 are coaxially aligned with the circular mounting block 6 at the end of the mounting cylinder 5 inside the enclosure plate 1. At this time, the anti-slip rubber strip 3 on the top surface of the enclosure plate 1 contacts the inner side of the cover plate 2, initially playing a positioning and anti-slip role. After the worker manually aligns, he pushes the cover plate 2 closer to the enclosure plate 1. The right circular conical slider 11 first enters the inner cavity of the circular mounting block 6, and its conical outer wall contacts the inclined surface of the limiting plate 8 and generates compression. Under the guidance of the rectangular structure, the two limiting plates 8 slide along the square groove to both sides, while compressing the first return spring 7 inside, reserving space for subsequent insertion. As the cover plate 2 continues to advance, the inverted conical slider 12 slides along the support rod 10 and compresses the second return spring 14 until the limiting groove between the circular conical slider 11 and the inverted conical slider 12 moves to the limiting plate 8. At this time, the first return spring 7 rebounds, pushing the two limiting plates 8 into the limiting groove to form a self-locking mechanism. At the same time, the mounting rod 13 supports the inverted conical slider 12 to prevent it from excessively shifting and to ensure the stability of the lock.

[0050] When it is necessary to remove the cover plate 2, the worker presses the cover plate 2 downwards continuously with both hands. The pressing force drives the two mounting rods 13 to move inwards to further compress the second return spring 14. At this time, under the compression of the second return spring 14, the inverted conical slider 12 slides along the support rod 10 towards the right conical slider 11. Its conical surface presses against the inclined surface of the limiting plate 8, forcing the limiting plate 8 to compress the first return spring 7 and exit the limiting groove. As the limiting plate 8 separates from the limiting groove, the support rod 10 drives the cover plate 2 to be pulled out from the circular mounting block 6, realizing unlocking. Each spring assembly returns to its initial state, and the structure can be reused for subsequent assembly.

[0051] 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. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A glue-free self-locking structure for corrugated cardboard box production, characterized in that, include: A partition (1) is provided with a cover plate (2) on both the top and bottom surfaces of the partition (1). The outer side wall of the partition (1) is in contact with the inner side wall of the two cover plates (2). Multiple paper tubes (4) are fixedly installed inside the partition (1). The multiple paper tubes (4) are evenly distributed. An installation tube (5) is fixedly installed inside each of the multiple paper tubes (4). Multiple sets of installation components are respectively set at both ends of multiple installation cylinders (5) and on the inner top surface of two cover plates (2), and are used to quickly install or remove the two cover plates (2).

2. The glue-free self-locking structure for corrugated cardboard box production according to claim 1, characterized in that: The mounting assembly includes a circular mounting block (6), which is fixedly mounted on one end of the mounting cylinder (5). Two square grooves are formed inside the circular mounting block (6). A first reset spring (7) is fixedly installed on one side of each of the two square grooves. A limit plate (8) is fixedly installed on the opposite end of each of the two first reset springs (7). The outer sidewalls of the two limit plates (8) are slidably connected to the inner sidewalls of the two square grooves, respectively.

3. The glue-free self-locking structure for corrugated cardboard box production according to claim 2, characterized in that: The mounting assembly also includes a circular fixing plate (9), which is fixedly installed on the inner top surface of one of the cover plates (2). A support rod (10) is fixedly installed at one end of the circular fixing plate (9), and a circular conical slider (11) is fixedly installed at one end of the support rod (10). An inverted conical slider (12) is provided above the circular conical slider (11), and the inner sidewall of the inverted conical slider (12) is slidably connected to the outer sidewall of the support rod (10). Both the right conical slider (11) and the inverted conical slider (12) are fitted into the inner cavity of the circular mounting block (6). The opposite ends of the two limiting plates (8) are inclined surfaces. One end of the two limiting plates (8) is slidably fitted with the outer wall of the inverted conical slider (12) and the right conical slider (11). A limiting groove is provided between the right conical slider (11) and the inverted conical slider (12). One end of the two limiting plates (8) is fitted into the inside of the limiting groove.

4. The glue-free self-locking structure for corrugated cardboard box production according to claim 3, characterized in that: The outer wall of the support rod (10) is provided with a second reset spring (14). One end of the second reset spring (14) is fixedly connected to the outer wall of the circular fixing plate (9), and the other end of the second reset spring (14) is fixedly connected to the outer wall of the inverted conical slider (12).

5. The glue-free self-locking structure for corrugated cardboard box production according to claim 3, characterized in that: Two mounting rods (13) are fixedly installed at one end of the circular fixing plate (9). The two mounting rods (13) are located on both sides of the support rod (10), and one end of the two mounting rods (13) is in contact with the outer wall of the inverted conical slider (12).

6. The glue-free self-locking structure for corrugated cardboard box production according to claim 1, characterized in that: Anti-slip strips (3) are fixedly installed on the top and bottom surfaces of the enclosure (1), and the two anti-slip strips (3) are in contact with the inner top surfaces of the two cover plates (2).

7. The glue-free self-locking structure for corrugated cardboard box production according to claim 1, characterized in that: The inner walls of the enclosure (1) and the two cover plates (2) are all provided with waterproof membranes.

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