Bending-resistant structure of plywood

Abstract

The utility model relates to the technical field of plywood production, and discloses a plywood anti-bending structure which comprises a core plate, two arched plates are connected to the two sides of the interior of the core plate in a glued mode, connecting plates are connected to the bottom of the core plate in a glued mode, and steel carbon fiber plate layers are connected to the tops of the connecting plates in a glued mode. The top of the steel carbon fiber plate layer is connected with a thin plate in a gluing mode. According to the plywood anti-bending structure, the two arch-shaped plates are installed on the two sides of the interior of the core plate, the bending resistance can be improved through the special shapes of the arch-shaped plates, certain buffering force can be provided for the plywood when the plywood is subjected to bending force, the surface of the core plate is not prone to being directly stressed, and the service life of the plywood is prolonged. The outside protection is firmer through the thin plates and the connecting plates, and the surfaces of the rivets penetrate through the whole plywood in the circular grooves, so that when the whole plywood is subjected to external force, the situation that the plywood is separated due to the fact that the plywood is bonded through glue is avoided, and the anti-distortion capacity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of plywood production technology, and in particular to a plywood bending-resistant structure. Background Technology

[0002] Plywood is a three- or multi-layered sheet material made by rotary cutting logs into veneers or slicing timber into thin sheets and then gluing them together with adhesives. It usually uses an odd number of veneer layers and glues the adjacent veneer layers with the fiber directions perpendicular to each other.

[0003] Chinese patent discloses a plywood (authorization announcement number CN201224140Y), which is made of multiple bamboo and wood strips arranged in a basically parallel and stacked manner, glued together. All the fibers in these bamboo and wood strips retain their original length, while the irregular gaps between the bamboo and wood strips are filled and bonded by adhesive to form a whole board shape. Each bamboo and wood strip has an irregular cross-section.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: Existing plywood is mainly made of wood, and wood is prone to bending when subjected to lateral force. In addition, during the processing of plywood, the boards are prone to twisting and warping, resulting in unevenness of the board surface, which further affects its bending resistance. At the same time, plywood is prone to absorbing moisture. After absorbing too much moisture, the board will expand and lose its original shape, resulting in deformation, which seriously affects its bending resistance and service life. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that plywood is easy to absorb moisture, and the board will expand and lose its original shape after absorbing too much moisture, thus causing deformation. To this end, we propose a plywood bending-resistant structure.

[0006] To achieve the above objectives, this application adopts the following technical solution: a plywood bending-resistant structure, comprising a core board, two arched plates installed on both sides inside the core board, connecting plates installed at the bottom and bottom of the core board, a steel carbon fiber plate layer installed on the top of the connecting plates, and a thin plate installed on the top of the steel carbon fiber plate layer.

[0007] Preferably, the top of the connecting plate has circular grooves around all four sides, the circular grooves penetrate all the plates, and rivets are slidably connected inside the circular grooves, with rivet heads fixed at the top and bottom of the rivets.

[0008] Preferably, limit blocks are fixed on both sides of the arched plate, and two limit grooves are opened on both sides inside the core plate, with the inside of the limit grooves slidingly connected to the surface of the limit blocks.

[0009] Preferably, the core board has three load-bearing plates of different specifications fixed at both the top and bottom.

[0010] Preferably, the core plate and the arched plate are filled with rubber filler.

[0011] Preferably, the top and bottom of the thin plate are provided with four joint grooves.

[0012] Preferably, the steel carbon fiber plate layer is made of steel wire fiber reinforced material.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, two arched plates are installed on both sides inside the core board. The special shape of the arched plates can improve the bending resistance, so that when the plywood is subjected to bending force, it will provide a certain buffer force for the plywood and will not easily allow the surface of the core board to be directly stressed. Furthermore, the thin plate and connecting plate make the external protection more solid, thus solving the limitations of traditional plywood in terms of bending resistance. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This is an exploded view of the core board structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the arched plate structure of this utility model.

[0018] Legend: 1. Core board; 2. Arched board; 3. Connecting plate; 4. Steel carbon fiber board layer; 5. Thin plate; 6. Rivet; 7. Nail head; 8. Load-bearing plate; 9. Limiting groove; 10. Limiting block; 11. Circular groove; 12. Tile joint groove; 13. Rubber filler. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0020] Reference Figure 1 , Figure 2 and Figure 3As shown, this utility model provides a technical solution: a plywood bending-resistant structure, including a core board 1, two arched plates 2 glued to both sides inside the core board 1, connecting plates 3 glued to both bottom of the core board 1, a steel carbon fiber plate layer 4 glued to the top of the connecting plates 3, and a thin plate 5 glued to the top of the steel carbon fiber plate layer 4. By installing two arched plates 2 on both sides inside the core board 1, the special shape of the arched plates 2 can improve the bending resistance, so that when the plywood is subjected to bending force, it will provide a certain buffer force for the plywood, and the surface of the core board 1 will not be easily subjected to direct force. The thin plate 5 and the connecting plates 3 make the external protection more solid.

[0021] Reference Figure 2 As shown in this embodiment: Circular grooves 11 are provided around the top of the connecting plate 3. The circular grooves 11 penetrate all the plates. Rivets 6 are slidably connected inside the circular grooves 11. The top and bottom of the rivets 6 are fixed with nail heads 7. The surface of the rivets 6 penetrates the entire plywood inside the circular grooves 11, so that when the entire plate is subjected to external force, it will not separate because the plywood is glued together. This would prevent the plywood from lacking integrity, reducing its resistance to warping, resulting in an incomplete appearance and affecting its use.

[0022] Reference Figure 1 and Figure 3 As shown in this embodiment: Limiting blocks 10 are fixed on both sides of the arched plate 2, and two limiting grooves 9 are opened on both sides of the core plate 1. The inside of the limiting grooves 9 is slidably connected to the surface of the limiting blocks 10. By fixing limiting blocks 10 on both sides of the arched plate 2, since there are two blocks on the top and bottom of the arched plate 2, the arched plate 2 on the other side of the force will not detach from the core plate 1 when the arched plate 2 is subjected to a great force, thus preventing the entire plywood from becoming unusable. Furthermore, the arched plate 2 on the other side of the force-bearing surface will have a limiting effect on the surface of the limiting blocks 10 through the inside of the limiting grooves 9, which can better improve the anti-distortion ability.

[0023] Reference Figure 1 , Figure 2 and Figure 3 As shown in this embodiment: three load-bearing plates 8 of different specifications are fixed at the top and bottom of the core board 1. By fixing three load-bearing plates 8 of different specifications at the top and bottom of the core board 1, the arched board 2 can withstand external forces when subjected to external forces, and the load-bearing plate 8 can withstand the external forces at the middle position of the object when it is bent, which is the most likely to bend or break, thus ensuring the bending resistance of the object.

[0024] Reference Figure 1 and Figure 3As shown in this embodiment: the core board 1 and the arched board 2 are filled with rubber filler 13. By filling the core board 1 and the arched board 2 with rubber filler 13, the plywood can play a certain role in buffering the force when it is subjected to external forces, thereby reducing the force on the plywood and improving its bending resistance.

[0025] Reference Figure 2 As shown in this embodiment: four joint grooves 12 are provided on the top and bottom of the thin plate 5. The height of the joint grooves 12 is the same as the height of the nail head 7. By providing four joint grooves 12 on the top and bottom of the two thin plates 5, and ensuring that the height of the joint grooves 12 is the same as the height of the nail head 7, after the nail head 7 is fixed to the plywood with the rivet 6, the surface of the nail head 7 will not be the same as the surface of the thin plate 5, thus ensuring the aesthetics of the plywood and preventing the user from scratching their body or objects during use.

[0026] Reference Figure 2 and Figure 3 As shown in this embodiment, the steel carbon fiber plate layer 4 is made of steel wire carbon fiber reinforced material. By using steel wire carbon fiber reinforced material for the steel carbon fiber plate layer 4, the carbon fiber plate layer has high strength and rigidity, but low mass density. This allows the carbon fiber plate layer to provide high strength support while reducing the overall weight, reducing the structural load, and improving the load-bearing capacity.

[0027] Working principle: Step 1, two arched plates 2 are installed on both sides inside the core board 1. The special shape of the arched plates 2 can improve the bending resistance, so that the plywood will be subjected to bending force and provide a certain buffer force. Since there are two arched plates 2, one on the top and one on the bottom, the arched plate 2 will not separate from the core board 1 when subjected to great force. The load-bearing plate 8 can resist the external force and ensure the bending resistance of the object. The core board 1 and the arched plates 2 are filled with rubber filler 13, which can make the plywood play a certain buffer force when subjected to external force. The steel carbon fiber plate layer 4 is made of steel wire carbon fiber reinforced material, which gives the carbon fiber plate layer high strength and rigidity, but low mass density.

[0028] Step two: The surface of the rivet 6 penetrates the entire plywood through the inside of the round groove 11, so that the entire board will not separate when subjected to external force because the plywood is glued together. Four joint grooves 12 are opened at the top and bottom of the two thin boards 5. The height of the joint grooves 12 is the same as the height of the nail head 7. After the nail head 7 is fixed to the plywood with the rivet 6, the surface of the nail head 7 will not be the same as the surface of the thin board 5, thus ensuring the aesthetics of the plywood.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bending-resistant structure of a plywood comprising a core board (1), characterized by: Two arched plates (2) are mounted on both sides of the core plate (1), the bottom of the core plate (1) is mounted with a connecting plate (3), the top of the connecting plate (3) is mounted with a steel carbon fiber plate layer (4), and the top of the steel carbon fiber plate layer (4) is mounted with a thin plate (5).

2. A bending-resistant structure for a plywood panel according to claim 1, wherein: A circular groove (11) is formed around the top of the connecting plate (3), the circular groove (11) penetrates all the plates, a rivet (6) is slidably connected in the circular groove (11), and the top and bottom of the rivet (6) are fixedly connected with a rivet cap (7).

3. The bending-resistant plywood structure of claim 1, wherein: Limiting blocks (10) are fixed on both sides of the arched plate (2), two limiting grooves (9) are formed in the core plate (1), and the limiting grooves (9) are slidably connected with the surfaces of the limiting blocks (10).

4. The bending-resistant plywood structure of claim 1, wherein: Three bearing plates (8) with different specifications are fixed on the top and bottom of the core plate (1).

5. The bending-resistant plywood structure of claim 1, wherein: The core plate (1) and the arched plate (2) are filled with rubber fillers (13).

6. The bending-resistant plywood structure of claim 1, wherein: Four joint beautifying grooves (12) are formed in the top and bottom of the thin plate (5).

7. The bending-resistant plywood structure of claim 1, wherein: The material of the steel carbon fiber plate layer (4) is steel fiber reinforced material.

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