High strength paper corner protector

Abstract

The utility model relates to a high -strength paper angle bead, including bottom plate, the side plate of being established in the adjacent two edges of bottom plate, the bottom of side plate is spaced apart and is provided with a plurality of recess along its length direction, and the side of bottom plate is equipped with the tenon of being adapted with each recess, the side plate of adjacent two edges of bottom plate is perpendicularly arranged each other, and the adjacent side edge junction of two side plates is provided with the mounting groove of arc shape along vertical direction, and the paper tube is bonded in mounting groove, the outside of bottom plate, side plate, paper tube is covered with first reinforcing plate, and first reinforcing plate covers the junction of bottom plate and side plate, paper tube and side plate, and is bonded through the mechanical engagement of bottom plate tenon and side plate recess, effectively promotes the connecting strength of bottom plate and side plate, avoids the separation of both when receiving longitudinal pressure or transverse impact, the paper tube in arc mounting groove can not only disperse the concentrated stress of side plate corner, strengthen the bending -resistant performance, but also can absorb the impact energy through self -deformation, prevent the corner fracture and junction drop.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, specifically to a high-strength paper corner protector. Background Technology

[0002] In the fields of logistics packaging, goods transportation, and storage, paper corner protectors are commonly used to protect the edges and corners of goods and prevent collision damage. They are widely used in the packaging of products such as home appliances, furniture, boards, and glass. Traditional paper corner protectors mostly adopt an L-shaped basic structure of "base plate + side plate". The connection between the base plate and the side plate is usually directly glued or folded into one piece. When subjected to longitudinal stacking pressure (such as the weight of multiple layers of goods stacked) or lateral impact force (such as bumps during transportation or collisions during loading and unloading), the connection is prone to cracking or even separation due to insufficient shear and tensile strength, resulting in corner protector failure and damage to the edges and corners of the goods. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-strength paper corner protector.

[0004] The purpose of this utility model can be achieved through the following technical solution: a high-strength paper corner protector, including a base plate and side plates disposed on two adjacent sides of the base plate. The bottom of the side plates is provided with multiple grooves spaced apart along their length. The side of the base plate is provided with tenons that are adapted to each groove. The tenons are embedded in the grooves to achieve the connection between the base plate and the side plates. The side plates on two adjacent sides of the base plate are arranged perpendicularly to each other, and an arc-shaped mounting groove is opened in the vertical direction at the connection between the adjacent sides of the two side plates. A paper tube is glued in the mounting groove. The base plate, side plates, and paper tube are covered with a first reinforcing plate. The first reinforcing plate covers the connection between the base plate and the side plates, and between the paper tube and the side plates.

[0005] Preferably, the bottom plate and the side plate are provided with a second reinforcing plate inside, and the second reinforcing plate covers the connection between the bottom plate and the side plate and the adjacent two side plates.

[0006] Preferably, the second reinforcing plate has connecting pieces on both sides, with one end of the connecting piece passing through the side plate and the first reinforcing plate and being bonded to the first reinforcing plate.

[0007] Preferably, both the bottom plate and the side plates are made of honeycomb paperboard.

[0008] Preferably, the honeycomb cells inside the honeycomb paperboard are filled with a filling material.

[0009] The beneficial effects of this utility model are: the mechanical interlocking of the bottom plate tenon and the side plate groove with adhesive bonding effectively improves the connection strength between the bottom plate and the side plate, preventing them from separating when subjected to longitudinal pressure or lateral impact; the paper tube in the arc-shaped mounting groove can not only disperse the concentrated stress at the corner of the side plate and enhance the bending resistance, but also absorb the impact energy through its own deformation, reduce the impact force at the side plate connection, and prevent corner breakage and connection detachment. Attached Figure Description

[0010] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0011] Figure 1 This is a structural schematic diagram of a high-strength paper corner protector according to the present invention.

[0012] Figure 2 This is a schematic diagram of the groove and tenon structure of a high-strength paper corner protector according to this utility model.

[0013] Figure 3 This is a schematic diagram of the second reinforcing plate structure of a high-strength paper corner protector according to this utility model.

[0014] The labels in the diagram represent: 1. Base plate; 2. Side plate; 3. Groove; 4. Tenon; 5. Mounting groove; 6. Paper tube; 7. First reinforcing plate; 8. Second reinforcing plate; 9. Connecting piece. Detailed Implementation

[0015] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0016] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0017] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] See Figures 1 to 3 As shown, the structure of this utility model is as follows: a high-strength paper corner protector, including a base plate 1 and side plates 2 disposed on two adjacent sides of the base plate 1. Multiple grooves 3 are spaced apart along the length of the bottom of the side plates 2. The side of the base plate 1 is provided with tenons 4 that fit into each groove 3. The tenons 4 are embedded in the grooves 3 to connect the base plate 1 and the side plates 2. The side plates 2 on two adjacent sides of the base plate 1 are arranged perpendicularly to each other, and an arc-shaped mounting groove is formed vertically at the connection point of adjacent sides of the two side plates 2. 5. A paper tube 6 is bonded inside the mounting groove 5. A first reinforcing plate 7 covers the outer sides of the base plate 1, side plate 2, and paper tube 6. The first reinforcing plate 7 covers the connection between the base plate 1 and side plate 2, and between the paper tube 6 and side plate 2. Specifically, the fitting and embedding of the tenon 4 and the groove 3, through mechanical interlocking and glue bonding, greatly improves the connection strength between the base plate 1 and side plate 2, preventing them from separating from the connection when subjected to longitudinal stacking pressure or lateral impact force; the paper tube 6 inside the arc-shaped mounting groove 5 is connected to the outer wall and The tight fit and bonding of the groove walls not only utilize their own rigidity to disperse the concentrated stress at the corner of the side plate 2 into dispersed stress along the axial and radial directions of the paper tube 6, significantly enhancing the bending resistance of the corner and preventing creases or breakage due to compression or collision, but also play a buffering role when subjected to impact. When external impact force is applied to the corner of the side plate 2, the paper tube 6, as a hollow structure, can undergo moderate elastic or plastic deformation, absorbing part of the impact energy through its own deformation, reducing the impact force transmitted to the connection of the side plate 2, and effectively preventing the connection of the two side plates 2 from falling off. The first reinforcing plate 7 on the outside covers the connection between the bottom plate 1 and the side plate 2, and between the paper tube 6 and the side plate 2. On the one hand, it further enhances the strength of each connection and prevents tearing at each connection. On the other hand, it forms an overall transmission path for the force on the bottom plate 1, side plate 2, and paper tube 6 through the reinforcing plate, so that the external force is borne by each component together, rather than by a single component alone, thereby comprehensively improving the overall load-bearing capacity and impact resistance of the paper corner protector.

[0019] like Figure 1As shown, a second reinforcing plate 8 is provided inside the base plate 1 and the side plate 2. The second reinforcing plate 8 covers the connection between the base plate 1 and the side plate 2 and the adjacent side plates 2. Specifically, the second reinforcing plate 8 inside the base plate 1 and the side plate 2 covers the connection between the base plate 1 and the side plate 2 and the adjacent side plates 2, forming support for the key connection parts from the inside of the structure. It forms a reinforced structure with the first reinforcing plate 7 on the outside. The second reinforcing plate 8 further improves the rigidity and deformation resistance of the overall structure by assisting in the dispersion of stress from the inside.

[0020] like Figure 1 , Figure 3 As shown, connecting pieces 9 are provided on both sides of the second reinforcing plate 8. One end of the connecting piece 9 passes through the side plate 2 and the first reinforcing plate 7 and is bonded to the first reinforcing plate 7. Specifically, the connecting pieces 9 on both sides of the second reinforcing plate 8 pass through the side plate 2 and the first reinforcing plate 7 and are bonded to the first reinforcing plate 7, which improves the bonding strength between the first reinforcing plate 7, the second reinforcing plate 8 and the side plate 2, and at the same time makes the second reinforcing plate 8 and the first reinforcing plate 7 form an integral structure. When the corner guard is subjected to force, it can be directly transmitted between the first reinforcing plate 7 and the second reinforcing plate 8 through the connecting piece 9.

[0021] Furthermore, both the base plate 1 and the side plate 2 are made of honeycomb paperboard. Utilizing the hexagonal grid characteristics of the honeycomb structure, external pressure or impact force can be evenly distributed to multiple grid units. While ensuring high compression and impact resistance, the overall weight is significantly reduced. Moreover, the multi-layer structure of the honeycomb paperboard has a certain degree of toughness, which can absorb some impact energy through slight deformation when subjected to force, thereby improving the cushioning and protection capabilities of the paper corner protectors.

[0022] Furthermore, the honeycomb paperboard contains filler material within the honeycomb cells. Specifically, the filler material fills the hollow gaps in the honeycomb cells, reducing the local deformation space of the honeycomb cells under stress, preventing the honeycomb cells from collapsing due to overload, and making the base plate 1 and side plate 2 more suitable for the protection needs of heavy items.

[0023] In practical use, when the corner protector is subjected to impact, the tenon 4 at the connection between the base plate 1 and the side plate 2 will mechanically engage with the groove 3, working together with the adhesive between them to resist external forces and prevent the base plate 1 and the side plate 2 from separating from the connection. When the impact force is applied to the corner of the two side plates 2, the paper tube 6 inside the arc-shaped mounting groove 5 first adheres to the groove wall to absorb the force. Its own rigidity disperses the concentrated impact stress to the axial and radial directions. At the same time, as a hollow structure, it undergoes moderate elastic or plastic deformation, absorbing part of the impact energy through deformation. This reduces the impact force transmitted to the connection of side plate 2, thus reducing the risk of the connection falling off. During this process, the first reinforcing plate 7 on the outside plays a role simultaneously, further reinforcing the connection between the bottom plate 1 and side plate 2, and between the paper tube 6 and side plate 2, preventing tearing of the connection seams due to stress concentration. At the same time, the first reinforcing plate 7 integrates the force of the bottom plate 1, side plate 2, and paper tube 6 into an overall transmission path, so that the external force is borne by the three together, rather than by a single component alone, ultimately improving the overall load-bearing capacity and impact resistance.

[0024] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A high-strength paper corner protector, characterized in that: The base plate (1) includes a base plate (1) and side plates (2) located on two adjacent sides of the base plate (1). The bottom of the side plates (2) is provided with a plurality of grooves (3) spaced apart along its length. The side of the base plate (1) is provided with tenons (4) that are adapted to each groove (3). The tenons (4) are embedded in the grooves (3) to achieve the connection between the base plate (1) and the side plates (2). The side plates (2) on two adjacent sides of the base plate (1) are arranged perpendicularly to each other, and an arc-shaped mounting groove (5) is opened in the vertical direction at the connection between the adjacent sides of the two side plates (2). A paper tube (6) is glued in the mounting groove (5). The outer sides of the base plate (1), side plates (2), and paper tube (6) are covered with a first reinforcing plate (7). The first reinforcing plate (7) covers the connection between the base plate (1) and the side plates (2) and the paper tube (6) and the side plates (2).

2. The high-strength paper corner protector according to claim 1, characterized in that: The bottom plate (1) and the side plate (2) are provided with a second reinforcing plate (8), which covers the connection between the bottom plate (1) and the side plate (2) and the adjacent side plates (2).

3. The high-strength paper corner protector according to claim 2, characterized in that: The second reinforcing plate (8) has connecting pieces (9) on both sides. One end of the connecting piece (9) passes through the side plate (2) and the first reinforcing plate (7) and is bonded to the first reinforcing plate (7).

4. The high-strength paper corner protector according to claim 1, characterized in that: Both the base plate (1) and the side plate (2) are honeycomb paperboard.

5. The high-strength paper corner protector according to claim 4, characterized in that: The honeycomb paperboard contains filler material within its honeycomb cells.

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