A sticker-free packaging carton

Abstract

The utility model discloses a kind of exempt from pasting's packing cartons, including bottom plate, the bottom plate outer wall is L-shaped, the bottom plate L-shaped end portion is provided with cover plate, the cover plate is relatively rotated by indentation with bottom plate;Two groups of slide groove one are set in the bottom plate upper end face, two groups The slide groove two are set in the inner wall of one side of the close end portion of side plate, the slide groove two are all inserted with sliding block two, the included angle between the sliding block two and side plate is perpendicular intersection, two groups The sliding block two are commonly connected with fixed plate;Two groups The side plate and bottom plate, fixed plate form a box body with upper open setting, the bottom plate outer wall is provided with fixed mechanism.The utility model is through sliding block one, slide groove one and bending part etc., utilize T-shaped anti-disengagement cooperation to realize the sliding adaptation of side plate and bottom plate, and linkage insertion mechanism simplifies assembly step, effectively solve the problem that the adaptation of current exempt from pasting carton is insufficient and assembly process is complicated due to fixed specification.

Description

Technical Field

[0001] This utility model relates to the field of packaging paper box technology, specifically a non-adhesive packaging paper box. Background Technology

[0002] Packaging boxes are a key carrier for the protection, transportation and display of goods, and their structural stability, ease of assembly and environmental friendliness are of paramount importance.

[0003] Existing folding cardboard boxes generally rely on adhesive bonding or complex snap-fit ​​structures for fixation. Adhesive bonding involves multiple steps, is costly, prone to peeling, and hinders recycling; while snap-fit ​​structures eliminate glue, they are cumbersome to assemble, difficult to position, and prone to loosening and breakage, affecting strength and durability. Especially when achieving glue-free assembly, existing technologies struggle to balance quick and reliable locking with structural stability: firstly, the connection between the side panels (especially those supporting the ends of the L-shaped base plate) and the base plate is weak and lacks effective reinforcement, making them susceptible to displacement under stress; secondly, the fixing mechanisms for reinforcing connections are often independent of the main structure, requiring additional steps and increasing complexity; thirdly, the lack of a simple lateral connection support design between side panels results in insufficient box rigidity and load-bearing capacity. These problems limit the application of glue-free cardboard boxes for high-value, fragile items or scenarios requiring repeated opening and closing. Therefore, this utility model proposes a glue-free packaging cardboard box to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, such as cumbersome assembly, easy loosening of connections, and poor adaptability, this invention achieves rapid assembly without glue, adjustable dimensions, and stable load-bearing capacity by setting up a slider that is linked to the bending part, a T-shaped anti-detachment structure, and a three-level fixing structure. This avoids problems such as assembly jamming, component detachment, and load-bearing deformation.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a non-adhesive packaging box, comprising a base plate, the outer wall of which is L-shaped, and a cover plate provided at the L-shaped end of the base plate. The cover plate and the base plate rotate relative to each other through indentation. Two sets of sliding grooves are provided on the upper surface of the base plate, each set containing a slider. A side plate is fixedly connected to the end face of each slider, with the end face of the side plate horizontal to the end face of the base plate, and the inner wall of one side of the cover plate contacting the end face of the side plate. Two sliding grooves are provided on the inner wall of the side plates near their ends, each containing a slider. The slider and the side plate intersect at a perpendicular angle. A fixing plate connects the two sets of sliders. The two sets of side plates, the base plate, and the fixing plate form a box with an open top. A fixing mechanism is provided on the outer wall of the base plate.

[0008] The fixing mechanism is used to strengthen the connection between the two sets of side plates and the bottom plate.

[0009] Preferably, the fixing mechanism includes a bendable bending portion, which is disposed at the end of the side plate, and the side wall of the bottom plate is provided with two sets of slots, in which the two sets of bending portions are respectively inserted.

[0010] Preferably, two sets of insert rods are symmetrically arranged on the outer wall of the base plate, and each of the bent parts is rotatably connected to a locking block. The outer wall of the locking block has a groove and engages with the outer wall of the insert rod.

[0011] Preferably, a limiting block is fixedly connected to the end of the insertion rod, and the outer wall of the locking block is in close contact with the outer wall of the insertion rod.

[0012] Preferably, the outer walls of slider one and slider two, and the inner walls of slide groove one and slide groove two are all T-shaped, and slider one and slider two are respectively in contact with the inner walls of slide groove one and slide groove two.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a non-adhesive packaging box, which has the following advantages:

[0015] 1. This utility model uses components such as slider one, slide groove one and bending part to achieve sliding adaptation between side plate and bottom plate by T-shaped anti-detachment cooperation, and the linkage plug-in mechanism simplifies the assembly steps, effectively solving the problems of insufficient adaptability and cumbersome assembly process of existing adhesive-free cardboard boxes due to fixed specifications.

[0016] 2. This utility model constructs a three-level fixing structure of linkage insertion-bending locking-block limiting through components such as card blocks, insertion rods, limiting blocks and fixing plates, and strengthens the lateral support rigidity, effectively improving the problems of easy loosening after assembly and easy deformation under load caused by the rough connection structure and insufficient fixing strength of existing adhesive-free cardboard boxes. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a non-adhesive packaging box proposed in this utility model;

[0018] Figure 2 for Figure 1 Structural diagram;

[0019] Figure 3 for Figure 2 Structural diagram;

[0020] Figure 4 for Figure 3 Structural diagram of components such as the middle side plate and fixing plate;

[0021] In the diagram: 1. Base plate; 2. Side plate; 3. Fixing plate; 4. Cover plate; 5. Bending part; 6. Slot; 7. Insert rod; 8. Limiting block; 9. Locking block; 10. Slide 1; 11. Slider 1; 12. Slider 2; 13. Slide 2. Detailed Implementation

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] This utility model provides a technical solution for a non-adhesive packaging cardboard box:

[0024] Please see Figure 1-4 A non-adhesive packaging box includes a base plate 1 with an L-shaped outer wall. A cover plate 4 is provided at the L-shaped end of the base plate 1, and the cover plate 4 and the base plate 1 can rotate relative to each other through indentation. Two sets of sliding grooves 10 are provided on the upper surface of the base plate 1, and a slider 11 is inserted into each of the two sets of sliding grooves 10. A side plate 2 is fixedly connected to the end face of each slider 11. The end face of the side plate 2 is horizontal with the end face of the base plate 1, and the inner wall of one side of the cover plate 4 is in contact with the end face of the side plate 2. Two sliding grooves 13 are provided on the inner wall of the side plates 2 near the end, and a slider 12 is inserted into each of the two sliding grooves 13. The slider 12 and the side plate 2 intersect at a perpendicular angle. A fixing plate 3 is connected between the two sets of sliders 12. The two sets of side plates 2, the base plate 1, and the fixing plate 3 form a box body with an open top. A fixing mechanism is provided on the outer wall of the base plate 1.

[0025] The fixing mechanism is used to strengthen the connection between the two sets of side plates 2 and the bottom plate 1;

[0026] Furthermore, the slide groove 10 extends along the length of the base plate 1, and the two sets of slide grooves 10 are symmetrically distributed about the central axis of the base plate 1 to ensure that the side plate 2 is subjected to balanced force when sliding through the slider 11.

[0027] The fixing mechanism includes a bendable bending part 5, which is located at the end of the side plate 2. Two sets of slots 6 are provided on the side wall of the bottom plate 1, and the two sets of bending parts 5 are respectively inserted into the two sets of slots 6.

[0028] Furthermore, the bending part 5 and the side plate 2 are integrally formed, with a bending angle range of 90°-120°, and the thickness of the bending part 5 is adapted to the depth of the slot 6, thereby improving the structural stability after insertion.

[0029] Two sets of insert rods 7 are symmetrically arranged on the outer wall of the base plate 1. The outer wall of the bent part 5 is rotatably connected with a locking block 9. The outer wall of the locking block 9 has a groove and is locked into the outer wall of the insert rod 7.

[0030] Furthermore, the rotation angle range of the locking block 9 is 0°-90°, and the width of its groove is equal to the diameter of the insertion rod 7, so that there is no loose gap after the locking block 9 and the insertion rod 7 are engaged.

[0031] A limiting block 8 is fixedly connected to the end of the insertion rod 7, and the outer wall of the locking block 9 is in contact with the outer wall of the insertion rod 7.

[0032] Furthermore, the limiting block 8 has a circular structure with a diameter larger than that of the insertion rod 7, and the limiting block 8 and the insertion rod 7 are integrally formed to prevent the locking block 9 from falling off the end of the insertion rod 7.

[0033] The outer walls of slider 11 and slider 212 and the inner walls of slide groove 10 and slide groove 213 are all T-shaped. Slider 11 and slider 212 are in contact with the inner walls of slide groove 10 and slide groove 213, respectively.

[0034] Furthermore, the fit clearance between the T-shaped slider 11 and the slide groove 10 is less than 0.2mm, and the fit clearance between the slider 12 and the slide groove 13 is also less than 0.2mm, ensuring that there is no jamming and the connection is tight during the sliding process.

[0035] In practical use, the working principle of this utility model is as follows:

[0036] During assembly, side plate 2 and slider 11 are integrally formed. When slider 11 is inserted along the groove 10 of base plate 1, the bent portion 5 at the end of side plate 2 slides synchronously into the slot 6 on the side wall of base plate 1, achieving initial positioning of side plate 2 and base plate 1. Two sets of grooves 10 are symmetrically distributed along the length of base plate 1. The T-shaped slider 11 fits into the groove 10 with a gap of less than 0.2mm, ensuring smooth sliding and preventing side plate 2 from falling off through the T-shaped anti-detachment design, while also ensuring the bent portion 5 is accurately inserted into the slot 6. Subsequently, fixing plate 3 is inserted into the groove 13 of side plate 2 via slider 2 12. The angle design of slider 2 12 perpendicularly intersecting side plate 2 allows fixing plate 3 to laterally connect the two sets of side plates 2. The tight fit between T-shaped slider 2 12 and groove 2 13 further enhances the rigidity of the box frame.

[0037] During the fixing stage, after the slider 11 drives the bent part 5 to complete the insertion, the bent part 5 is bent 90°-120° along the crease to make it fit tightly against the inner wall of the slot 6, achieving secondary fixing through bending tension; the locking block 9 on the outer wall of the bent part 5 is rotated to 0°-90°, so that its groove engages with the insertion rod 7 of the base plate 1. The precise matching of the groove width and the diameter of the insertion rod 7 ensures no loose gaps; the circular limiting block 8 with a larger diameter at the end of the insertion rod 7 blocks the axial fall-off path of the locking block 9, forming a three-level fixing structure of linkage insertion, bending locking, and locking block limiting, strengthening the connection stability between the side plate 2 and the base plate 1. When the box is closed, the cover plate 4 rotates around the indentation of the base plate 1, and its inner wall contacts the end face of the side plate 2 to form a seal, completing the overall assembly.

[0038] Through the above design, the linkage between slider 11 and bending part 5 simplifies the assembly steps, and the step-locking mechanism ensures the structural stability in the adhesive-free state, ultimately achieving the core functions of "adhesive-free rapid assembly, adjustable fit, and reliable load-bearing capacity".

[0039] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A non-adhesive packaging box, comprising a base plate (1), characterized in that: The outer wall of the base plate (1) is L-shaped, and a cover plate (4) is provided at the L-shaped end of the base plate (1). The cover plate (4) and the base plate (1) rotate relative to each other through indentation. Two sets of sliding grooves (10) are provided on the upper surface of the base plate (1). A slider (11) is inserted into each of the two sets of sliding grooves (10). A side plate (2) is fixedly connected to the end face of each slider (11). The end face of the side plate (2) is horizontal with the end face of the base plate (1), and the inner wall of one side of the cover plate (4) is parallel to the base plate (1). The side plates (2) are in contact with each other at the end; the inner wall of the two sets of side plates (2) near the end is provided with a sliding groove (13), and a slider (12) is inserted into each of the sliding grooves (13). The slider (12) and the side plate (2) are perpendicularly intersecting each other. The two sets of sliders (12) are connected by a fixing plate (3); the two sets of side plates (2), the bottom plate (1), and the fixing plate (3) form a box with an open top. The outer wall of the bottom plate (1) is provided with a fixing mechanism. The fixing mechanism is used to strengthen the connection between the two sets of side plates (2) and the bottom plate (1).

2. The adhesive-free packaging box according to claim 1, characterized in that: The fixing mechanism includes a bendable bending part (5), which is located at the end of the side plate (2). The side wall of the bottom plate (1) is provided with two sets of slots (6), and the two sets of bending parts (5) are respectively inserted into the two sets of slots (6).

3. The adhesive-free packaging box according to claim 2, characterized in that: Two sets of insert rods (7) are symmetrically arranged on the outer wall of the base plate (1). The outer wall of the bent part (5) is rotatably connected with a locking block (9). The outer wall of the locking block (9) has a groove and is locked onto the outer wall of the insert rod (7).

4. A non-adhesive packaging box according to claim 3, characterized in that: The end of the insertion rod (7) is fixedly connected to a limiting block (8), and the outer wall of the locking block (9) is in contact with the outer wall of the insertion rod (7).

5. A non-adhesive packaging box according to claim 4, characterized in that: The outer walls of slider one (11) and slider two (12) and the inner walls of slide groove one (10) and slide groove two (13) are all T-shaped. Slider one (11) and slider two (12) are in contact with the inner walls of slide groove one (10) and slide groove two (13) respectively.

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