Bamboo plywood capable of preventing glue failure
By setting up step-like protrusions and vertically arranged reinforcement layers in the bamboo plyboard, combined with the compression mechanism, the problem of unsolid bonding of traditional bamboo plyboards is solved, and the mechanical properties and waterproof properties of bamboo plyboards are improved to prevent glue from occurring.
Patent Information
- Application Number
- CN202422008851.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-19
AI Technical Summary
During the production process of traditional bamboo plywood, due to the limited contact area between the layers, the bonding is not firm, which affects the stability and mechanical properties of the overall structure, and glue is prone to occur at the edges and corners.
Step-like protrusions are arranged between the first cross layer and the second cross layer to increase the contact area and bond with adhesive. The outer reinforcement layer is arranged vertically with the waterproof layer, and combined with the compression mechanism and the fastening bolts to prevent the edges and corners from being glued.
It significantly enhances the bonding strength of each layer of bamboo plyboard, improves the mechanical properties such as bending and shear resistance, prevents moisture from invading, extends service life, and prevents glue.
Smart Images
Figure CN223058511U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building materials, in particular to an anti-delamination bamboo plywood. Background Art
[0002] Bamboo plywood is a building material with bamboo materials as the main framework and filling materials, which is formed under high pressure. With its characteristics of high strength, anti-flexure, anti-compression, wear resistance, good water resistance, anti-corrosion and anti-insect, and economy, it is widely used in the construction industry. Bamboo plywood is commonly used in fields such as building templates, carriage bottom plates, bridge plates, and brick machine pallet boards. Its raw material bamboo is easy to cultivate and grows into forests quickly. In addition, bamboo plywood also has the advantages of convenient processing, smooth surface, and easy demoulding, which can improve construction efficiency and quality.
[0003] In the production process of traditional bamboo plywood, due to the limited contact area between layers, the bonding may not be firm, affecting the stability and mechanical properties of the overall structure. During the bonding process of bamboo plywood, the edges and corners are prone to delamination due to uneven stress. Therefore, the utility model proposes an anti-delamination bamboo plywood to solve the problems existing in the prior art. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and an anti-delamination bamboo plywood is proposed.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: an anti-delamination bamboo plywood, including a bamboo plywood body and a pressing mechanism. The bamboo plywood body is sequentially provided with a second cross layer, a first cross layer, an outer strengthening layer, and a waterproof layer from inside to outside. The second cross layer and the first cross layer are bonded by an adhesive, the first cross layer and the outer strengthening layer are bonded by an adhesive, the outer strengthening layer and the waterproof layer are bonded by an adhesive, and fastening holes are provided on the bamboo plywood body.
[0006] As a further description of the above technical scheme:
[0007] A fastening bolt slidably penetrates through the fastening hole. One end of the fastening bolt is fixedly connected with a first blocking piece. A first gasket is sleeved on the fastening bolt, and a fastening knob is threadedly connected to the fastening bolt.
[0008] As a further description of the above technical scheme:
[0009] The pressing mechanism includes a pressing plate bolt, a pressing plate, and a soft pad. One end of the pressing plate bolt is fixedly connected with a second blocking piece. A second gasket is sleeved on the pressing plate bolt, a pressing plate nut is threadedly connected to the pressing plate bolt, a rotating rod is fixedly connected to the pressing plate nut, and a rotating handle is rotatably connected to one end of the rotating rod.
[0010] As a further description of the above technical solution:
[0011] The adhesive between the waterproof layer, the outer strengthening layer, the first cross layer, and the second cross layer is phenolic resin glue. A number of groups of stepped protrusions are provided on both the first cross layer and the second cross layer, and the stepped protrusions of several groups between the first cross layer and the second cross layer are mutually adhered.
[0012] As a further description of the above technical solution:
[0013] The inner side of the outer strengthening layer is bonded with multiple layers of bamboo. The arrangement direction of the outer strengthening layer is perpendicular to that of the first cross layer. The material used for the waterproof layer is epoxy resin.
[0014] As a further description of the above technical solution:
[0015] There are four groups of fastening holes, which are evenly distributed at the four corners of the bamboo plywood body. The first blocking piece and the first gasket are respectively adhered to the upper and lower surfaces of the bamboo plywood body. There are two groups of pressing plates, which are symmetrically distributed on the pressing plate bolts. The soft pad is made of rubber material.
[0016] As a further description of the above technical solution:
[0017] Two groups of the soft pads are respectively adhered to the upper and lower surfaces of the bamboo plywood body. The pressing plate bolts slide through the pressing plates. The second gasket is adhered to the pressing plates, and the second blocking piece is adhered to the pressing plates.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the utility model, through the combined mode of the stepped protrusions of the first cross layer and the second cross layer, the contact area between the layers of the bamboo plywood is significantly increased, enabling the adhesive to penetrate and bond more fully, forming a tightly interlocked structure. At the same time, the strength of the middle layer of the bamboo plywood is enhanced. With the outer strengthening layer arranged perpendicular to the first cross layer and the second cross layer, the mechanical properties such as bending resistance and shear resistance of the board are effectively improved.
[0020] 2. In the utility model, the waterproof layer blocks the intrusion of external moisture, keeps the internal structure of the bamboo plywood dry, extends the service life of the bamboo plywood, and reduces problems such as deformation, swelling, or corrosion caused by a humid environment. Through the pressing mechanism and the corner fixing components such as the fastening bolts, the first blocking piece, the first gasket, and the fastening knobs, the glued bamboo plywood is pressed to prevent the phenomenon of internal glue separation. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a three-dimensional structural schematic diagram of a bamboo plywood for preventing glue separation proposed by the utility model;
[0022] Figure 2 Explosion diagram of the structure of a bamboo glue board for preventing delamination proposed by the present utility model;
[0023] Figure 3 Schematic diagram of the internal structure of a bamboo glue board for preventing delamination proposed by the present utility model Figure 1 ;
[0024] Figure 4 Schematic diagram of the internal structure of a bamboo glue board for preventing delamination proposed by the present utility model Figure 2 ;
[0025] Figure 5 is Figure 2 enlarged view of part A of
[0026] Legend description:
[0027] 1. Bamboo glue board body; 2. Waterproof layer; 3. Outer strengthening layer; 4. First cross layer; 5. Second cross layer; 6. Fastening bolt; 7. First blocking piece; 8. First gasket; 9. Fastening knob; 10. Pressing plate; 11. Soft pad; 12. Pressing plate bolt; 13. Second blocking piece; 14. Second gasket; 15. Pressing plate nut; 16. Rotating rod; 17. Rotating handle; 18. Fastening hole. Specific implementation manner
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0029] Referring to Figures 1 - 5 , an embodiment provided by the present utility model: A bamboo glue board for preventing delamination includes a bamboo glue board body 1 and a pressing mechanism. The bamboo glue board body 1 is sequentially provided with a second cross layer 5, a first cross layer 4, an outer strengthening layer 3, and a waterproof layer 2 from inside to outside. The second cross layer 5 and the first cross layer 4 are bonded by an adhesive. The first cross layer 4 and the outer strengthening layer 3 are bonded by an adhesive. The outer strengthening layer 3 and the waterproof layer 2 are bonded by an adhesive. The bamboo glue board body 1 is provided with a fastening hole 18.
[0030] A fastening bolt 6 slidably penetrates through a fastening hole 18. One end of the fastening bolt 6 is fixedly connected to a first blocking piece 7. A first gasket 8 is sleeved on the fastening bolt 6. A fastening knob 9 is threadedly connected to the fastening bolt 6. The pressing mechanism includes a pressing plate bolt 12, a pressing plate 10, and a soft pad 11. One end of the pressing plate bolt 12 is fixedly connected to a second blocking piece 13. A second gasket 14 is sleeved on the pressing plate bolt 12. A pressing plate nut 15 is threadedly connected to the pressing plate bolt 12. A rotating rod 16 is fixedly connected to the pressing plate nut 15. One end of the rotating rod 16 is rotatably connected to a rotating handle 17. The adhesive between the waterproof layer 2, the outer strengthening layer 3, the first cross layer 4, and the second cross layer 5 is a phenolic resin adhesive. A number of groups of stepped protrusions are provided on both the first cross layer 4 and the second cross layer 5. The number of groups of stepped protrusions between the first cross layer 4 and the second cross layer 5 are mutually adhered. The inside of the outer strengthening layer 3 is bonded with multiple layers of bamboo. The arrangement direction of the outer strengthening layer 3 is perpendicular to that of the first cross layer 4. The material used for the waterproof layer 2 is epoxy resin. There are four groups of fastening holes 18 and they are evenly distributed at the four corners of the bamboo glue board body 1. The first blocking piece 7 and the first gasket 8 are respectively adhered to the upper and lower surfaces of the bamboo glue board body 1. There are two groups of pressing plates 10 and they are symmetrically distributed on the pressing plate bolt 12. The soft pad 11 is made of rubber material. The two groups of soft pads 11 are respectively adhered to the upper and lower surfaces of the bamboo glue board body 1. The pressing plate bolt 12 slidably penetrates through the pressing plate 10. The second gasket 14 is adhered to the pressing plate 10. The second blocking piece 13 is adhered to the pressing plate 10.
[0031] Working principle: The bamboo plywood designed by the utility model is combined by a number of groups of stepped protrusions between the first cross layer 4 and the second cross layer 5. The adhesive is respectively applied on the protrusions of the first cross layer 4 and the second cross layer 5. By fitting between the protrusions, the contact area between the first cross layer 4 and the second cross layer 5 is increased, so as to fully bond them with the adhesive, forming a tightly fitted structure, enhancing the overall stability. At the same time, the stepped design increases the strength of the middle layer of the bamboo plywood. By arranging the materials in the outer reinforcing layer 3 perpendicular to the first cross layer 4 and the second cross layer 5, the stress can be effectively dispersed, enhancing the mechanical properties such as bending resistance and shear resistance of the board. Through the waterproof layer 2 on the outer layer, external moisture can be effectively prevented from entering the bamboo plywood, extending its service life. After bonding the second cross layer 5, the first cross layer 4, the outer reinforcing layer 3 and the waterproof layer 2 with the adhesive, the fastening bolts 6 are inserted into the fastening holes 18 at the four corners of the bamboo plywood body 1, and the fastening knob 9 is rotated to press down the first gasket 8, cooperating with the first blocking piece 7 to clamp the bamboo plywood body 1 up and down, preventing the corners from bonding not firmly and causing the glue to come off. Then, the bamboo plywood body 1 is placed between the two soft pads 11 of the clamping mechanism. By rotating the turning handle 17 to drive the rotating rod 16, and by the rotating rod 16 to drive the pressing nut 15, the pressing nut 15 rotates to press the second gasket 14 and cooperate with the second blocking piece 13 to clamp the bamboo plywood body 1 up and down. The soft pads 11 press the middle position of the bamboo plywood body 1 to prevent the internal layers from not being closely attached when the internal adhesive dries, resulting in internal glue coming off.
[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A bamboo plywood board resistant to delamination, characterized in that: It includes a bamboo plywood body (1) and a pressing mechanism. The bamboo plywood body (1) is successively provided with a second cross layer (5), a first cross layer (4), an outer strengthening layer (3), and a waterproof layer (2) from inside to outside. The second cross layer (5) and the first cross layer (4) are bonded by an adhesive. The first cross layer (4) and the outer strengthening layer (3) are bonded by an adhesive. The outer strengthening layer (3) and the waterproof layer (2) are bonded by an adhesive. The bamboo plywood body (1) is provided with fastening holes (18).
2. The anti-delamination bamboo plywood according to claim 1, characterized in that: A fastening bolt (6) slidably penetrates through the fastening hole (18). One end of the fastening bolt (6) is fixedly connected with a first blocking piece (7). A first gasket (8) is sleeved on the fastening bolt (6). A fastening knob (9) is threadedly connected to the fastening bolt (6).
3. The bamboo plywood board for preventing glue opening according to claim 2, characterized in that: The pressing mechanism includes a pressing plate bolt (12), a pressing plate (10), and a soft pad (11). One end of the pressing plate bolt (12) is fixedly connected with a second blocking piece (13). A second gasket (14) is sleeved on the pressing plate bolt (12). A pressing plate nut (15) is threadedly connected to the pressing plate bolt (12). A rotating rod (16) is fixedly connected to the pressing plate nut (15). One end of the rotating rod (16) is rotatably connected with a rotating handle (17).
4. The anti-delamination bamboo plywood according to claim 3, wherein: The adhesives between the waterproof layer (2), the outer strengthening layer (3), the first cross layer (4), and the second cross layer (5) adopt phenolic resin glue. A number of groups of stepped protrusions are provided on both the first cross layer (4) and the second cross layer (5). The number of groups of stepped protrusions between the first cross layer (4) and the second cross layer (5) are mutually fitted.
5. The glued bamboo plywood according to claim 4, characterized in that: The inside of the outer strengthening layer (3) is bonded with multiple layers of bamboo. The arrangement direction of the outer strengthening layer (3) is perpendicular to that of the first cross layer (4). The material used for the waterproof layer (2) is epoxy resin.
6. The anti-delamination bamboo plywood according to claim 5, characterized in that: There are four groups of the fastening holes (18) and they are evenly distributed at the four corners of the bamboo plywood body (1). The first blocking piece (7) and the first gasket (8) are respectively in contact with the upper and lower surfaces of the bamboo plywood body (1). There are two groups of the pressing plates (10) and they are symmetrically distributed on the pressing plate bolts (12). The soft pad (11) is made of rubber material.
7. The anti-delamination bamboo plywood according to claim 6, characterized in that: The two groups of the soft pads (11) are respectively in contact with the upper and lower surfaces of the bamboo plywood body (1). The pressing plate bolt (12) slidably penetrates through the pressing plate (10). The second gasket (14) is in contact with the pressing plate (10). The second blocking piece (13) is in contact with the pressing plate (10).