Deformation-resistant wooden plywood

Abstract

The utility model relates to the field of building plywood, in particular to a deformation-resistant wooden plywood which comprises a framework layer, at least one reinforcing layer is connected to the upper side and the lower side of the framework layer in an attached mode, and at least one wooden surface layer is connected to the outer side of the reinforcing layer in an attached mode. The framework layer is provided with a plurality of grid structures which are connected in a staggered mode, the strengthening layer and the surface layer are of sheet structures, and the upper end face and the lower end face of the strengthening layer are non-smooth faces. The utility model is beneficial for solving the problem that some existing building plywood is easy to deform and even damage due to unfavorable structure in actual use because the composite structure is relatively simple.

Description

Technical Field

[0001] The utility model relates to the field of building plywood, in particular to a deformation-resistant wooden plywood. Background Art

[0002] Plywood is a three-layer or multi-layer board material made by peeling wood segments into veneers or planing wood blocks into thin wood, and then gluing them together with adhesives. Plywood is one of the commonly used materials for furniture and one of the three major types of man-made boards. It can also be used as a material for construction and packaging boxes.

[0003] Among them, most of the plywood used in construction is in the form of wooden formwork, which is a temporary supporting structure made according to design requirements to shape the concrete structure and components according to the specified position and geometric dimensions, maintain their correct position, and bear the deadweight of the building formwork and the external loads acting on it. At present, the building wooden formwork is a building formwork composed of multiple layers of wooden sheets bonded together by industrial glue (phenolic glue, triamine glue or white glue), and most of the wooden sheets of each layer adopt a positive sheet structure, stacked and glued to each other. In fact, the wooden sheets of each layer are in contact with each other on the plane, and only rely on a thin layer of glue to provide the bonding connection effect after compounding. During actual construction, when hammering nails, pulling nails, adjusting the template position, removing the mold, etc., construction workers often use tools such as hammers and crowbars to knock and beat the wooden formwork. This knocking and beating often causes uneven force on local areas of the wooden formwork, resulting in the fracture and failure of the connection structure originally formed by the local glue, which in turn easily causes the wooden formwork to deform and bend, which greatly affects the subsequent support accuracy and the service life of the wooden formwork. Utility Model Content

[0004] The utility model provides a deformation-resistant wooden plywood, which is beneficial to solving the problem that some existing building plywoods are prone to structural adverse deformation or even damage during actual use due to their relatively simple composite structure.

[0005] The utility model is achieved in this way:

[0006] A deformation-resistant wooden plywood comprises a skeleton layer, at least one strengthening layer being bonded to the upper and lower sides of the skeleton layer, and at least one wooden surface layer being bonded to the outer side of the strengthening layer; the skeleton layer is provided with a plurality of mutually staggered grid structures, the strengthening layer and the surface layer are sheet structures, and the upper and lower end surfaces of the strengthening layer are non-smooth surfaces.

[0007] On the basis of the above technical solution, the outer contours of the skeleton layer, the strengthening layer and the surface layer are all rectangular structures of the same size.

[0008] On the basis of the above technical solution, a plurality of hollow structures are formed on the inner side of the skeleton layer due to the grid structure. The hollow structures form a filling cavity after the skeleton layer is compounded with the upper and lower reinforcement layers, and the filling cavity is equipped with filler.

[0009] On the basis of the above technical solution, the upper and lower ends of the skeleton layer are provided with concave sinks.

[0010] Based on the above technical solution, the skeleton layer consists of a base frame and two frames. The base frame is a rectangular grid plate structure, and the frame is a rectangular frame structure. The two frames are respectively compounded at the upper and lower ends of the base frame, and the frame is consistent with the outer contour of the frame.

[0011] On the basis of the above technical solution, the strengthening layer is located in the sink, and the outer end surface of the strengthening layer is flush with the outer end surface of the skeleton layer.

[0012] Based on the above technical solution, the strengthening layer is a mesh structure.

[0013] Based on the above technical solution, the reinforcement layer is a woven structure.

[0014] On the basis of the above technical solution, the inner end surface of the surface layer is provided with a plurality of evenly distributed sinking grooves.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] The utility model provides a skeleton layer, a reinforcement layer and a surface layer to cooperate as a deformation-resistant composite structure of the plywood, wherein the grid structure of the skeleton layer and the non-smooth end surface of the reinforcement layer are utilized to enrich the internal hierarchical structure, so that the structural strength of the plywood in the composite state is greatly improved, and the connection firmness of the composite glue is also greatly improved, thereby helping to solve the problem that some existing building plywoods are prone to structural adverse deformation or even damage during actual use due to the relatively simple composite structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 Schematic diagram of the hierarchical structure of a deformation-resistant wooden plywood in one embodiment;

[0019] Figure 2 Schematic diagram of the explosion structure of deformation-resistant wooden plywood in one embodiment;

[0020] Figure 3 This is a schematic structural diagram of a groove in one embodiment;

[0021] Figure 4 This is a structural diagram of a sinking platform in one embodiment;

[0022] Figure 5 A schematic diagram of the hierarchical structure of a deformation-resistant wooden plywood in another embodiment;

[0023] Figure 6 Schematic diagram of the exploded structure of the skeleton layer in one embodiment.

[0024] Markings in the figure: 1, skeleton layer; 11, base frame; 12, frame; 2, upper reinforcement layer; 3, lower reinforcement layer; 4, upper surface layer; 41, sinking trough; 5, lower surface layer; 6, sinking platform. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the present invention.

[0026] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1: Combination Figure 1 and Figure 2 This embodiment discloses a deformation-resistant wood plywood, comprising a skeleton layer 1, an upper reinforcement layer 2, a lower reinforcement layer 3, an upper surface layer 4, and a lower surface layer 5. The skeleton layer 1 is located in the middle, the upper reinforcement layer 2 is glued to the top of the skeleton layer 1 using glue (phenolic glue, triamine glue, or white glue), the lower reinforcement layer 3 is glued to the bottom of the skeleton layer 1 using glue, the upper surface layer 4 is glued to the top of the upper reinforcement layer 2 using glue, and the lower surface layer 5 is glued to the bottom of the lower reinforcement layer 3 using glue.

[0030] The outer contours of the skeleton layer 1, the strengthening layer, and the surface layer are all rectangular structures of the same size.

[0031] like Figure 2 As shown, the skeleton layer 1 is provided with a number of grid structures that are interconnected, and a number of hollow structures are formed on the inner side of the skeleton layer 1 due to the grid structure. Specifically, the inner area of the skeleton layer 1 has a plurality of wooden beams that are staggered. The beams not only serve as a connecting structure but also ensure the lateral structural stability of the skeleton layer 1. When a local area is subjected to external force, the adjacent areas can use the beams to provide a corresponding pulling relationship, and can reasonably transmit and disperse the external force to a larger area. In addition, the beams can also play a supporting role in the longitudinal direction, thereby improving the longitudinal stability of the composite structure.

[0032] The upper reinforcement layer 2, lower reinforcement layer 3, upper surface layer 4, and lower surface layer 5 are all sheet-like structures. In this embodiment, the skeleton layer 1 is 15 mm thick, the upper and lower reinforcement layers 2 and 3 are 5 mm thick, and the upper and lower surface layers 4 and 5 are 10 mm thick. This structure provides the plywood with excellent structural strength, meeting construction requirements.

[0033] Furthermore, the upper and lower end surfaces of the upper and lower reinforcing layers 2 and 3 are non-smooth. In this embodiment, the reinforcing layers are woven from a plurality of thin wooden strips interlaced horizontally and vertically. This serves to enhance the transverse tear resistance of the overall structure. In other embodiments, the upper and lower reinforcing layers 2 and 3 may also be woven from non-woven fabrics, fiber fabrics, nylon fabrics, and other materials.

[0034] Furthermore, the upper surface layer 4 and the lower surface layer 5 are made of a single piece of wood. In other embodiments, the upper surface layer 4 and the lower surface layer 5 can also be composited with a plurality of thin wood slices.

[0035] Compared with the existing plywood which is made of several thin wood slices, the wooden formwork made of the plywood structure in this embodiment is more solid and reliable. During actual construction, when hammering nails, pulling nails, adjusting the formwork position, removing the mold and other operations, the construction workers use hammers, crowbars and other tools to knock and beat the wooden formwork, which will not easily cause the connection structure originally formed by the local glue to break and fail, and then easily cause the wooden formwork to deform and bend, nor will it excessively affect the subsequent support accuracy and the service life of the wooden formwork.

[0036] Example 2: Based on Example 1, Figure 3 As shown, in this embodiment, a plurality of evenly distributed sink grooves 41 are provided on the inner end surface (bottom end surface) of the upper surface layer 4 .

[0037] The grooves 41 are strip-shaped slots, forming concave spaces on the inner end face (bottom face) of the upper surface layer 4. These concave spaces provide additional space for glue spraying, allowing the inner end face (bottom face) of the upper surface layer 4 to hold more glue. This increases the amount of glue used and enriches the contact area and spatial relationship between the glue and the upper surface layer 4, thereby improving the bonding strength after subsequent bonding. It should be noted that the inner end face (top face) of the lower surface layer 5 and the inner end face (bottom face) of the upper surface layer 4 have the same structure and achieve the same effect.

[0038] Example 3: Based on Example 1, Figure 4 As shown, in this embodiment, the skeleton layer 1 is an integrated structure, and concave sinks 6 are provided at the upper and lower ends of the skeleton layer 1. The sinks 6 form rectangular concave spaces on the upper and lower end faces of the skeleton layer 1.

[0039] Further, combined Figure 5 As shown, after lamination, the upper reinforcement layer 2 is located within the sink 6 at the upper end of the skeleton layer 1, and the lower reinforcement layer 3 is located within the sink 6 at the lower end of the skeleton layer 1. The upper end surface of the upper reinforcement layer 2 is flush with the upper end surface of the skeleton layer 1, and the lower end surface of the lower reinforcement layer 3 is flush. This structure makes the composite structure of the skeleton layer 1, upper reinforcement layer 2, and lower reinforcement layer 3 more compact, which can help to reduce the overall thickness of the plywood while ensuring that the structural strength meets the standard, making the structure more lightweight. In addition, this structure also makes the outer contour structure of the internal composite structure based on the skeleton layer 1 more solid and reliable.

[0040] Example 4: Based on Example 3, combined Figure 6As shown, in this embodiment, the skeleton layer 1 consists of a base frame 11 and two frames 12. The base frame 11 is a rectangular grid plate structure, and the frames 12 are rectangular frame structures. The two frames 12 are respectively composited at the upper and lower ends of the base frame 11, and the frames 12 are consistent with the outer contour of the frame. This structure further refines the specific structure of the skeleton layer 1, disassembling it into three relatively simple components. This facilitates the production and processing of the skeleton layer 1, making it more efficient and cost-effective.

[0041] Example 5: Based on Example 4, the inner side of the skeleton layer 1 forms a plurality of hollow structures due to the grid structure (the inner side of the base has multiple hollow structures). After the skeleton layer 1 is compounded with the upper reinforcement layer 2 and the lower reinforcement layer 3, the hollow structures form a sealed filling cavity, and the filling cavity is filled with filler. Specifically, in this embodiment, the filler is specifically glue. The skeleton layer 1 and the lower reinforcement layer 3 are first bonded so that the bottom of the hollow structure inside the skeleton layer 1 is closed and the top is open. The hollow structure is then filled with corresponding glue, and then the upper reinforcement layer 2 is compounded so that the hollow structure forms a sealed chamber structure. Afterwards, the glue located in the sealed chamber structure will contact the inner end surfaces of the skeleton layer 1, the upper reinforcement layer 2, and the lower reinforcement layer 3 and have a bonding effect after solidification. This method can greatly improve the structural strength of the skeleton layer 1 and the connection firmness between the skeleton layer 1 and the upper reinforcement layer 2 and the lower reinforcement layer 3. It should be noted that the amount of glue filled can be selected according to actual needs.

[0042] In other embodiments, the upper strengthening layer 2 and the lower strengthening layer 3 are mesh structures, such as steel mesh, galvanized aluminum mesh, etc.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A deformation-resistant wooden plywood, characterized in that: The invention comprises a skeleton layer (1), wherein at least one strengthening layer is bonded to the upper and lower sides of the skeleton layer (1), and at least one wooden surface layer is bonded to the outer side of the strengthening layer; the skeleton layer (1) is provided with a plurality of grid structures connected to each other in an interlaced manner, the strengthening layer and the surface layer are sheet materials, and the upper and lower end surfaces of the strengthening layer are non-smooth surfaces.

2. The deformation-resistant wooden plywood according to claim 1, characterized in that: The outer contours of the skeleton layer (1), the strengthening layer, and the surface layer are all rectangular structures of the same size.

3. The deformation-resistant wooden plywood according to claim 1, characterized in that: The inner side of the skeleton layer (1) forms a plurality of hollow structures due to the grid structure. The hollow structures form a filling cavity after the skeleton layer (1) is composited with the upper and lower reinforcement layers. Filling material is installed in the filling cavity.

4. The deformation-resistant wooden plywood according to claim 1, characterized in that: The upper and lower ends of the skeleton layer (1) are provided with inwardly concave sinking platforms (6).

5. The deformation-resistant wooden plywood according to claim 4, characterized in that: The skeleton layer (1) is composed of a base frame (11) and two frames (12); the base frame (11) is a rectangular grid plate structure; the frames (12) are rectangular frame structures; the two frames (12) are respectively compounded at the upper and lower ends of the base frame (11); and the frames (12) are consistent with the outer contour of the frame.

6. The deformation-resistant wooden plywood according to claim 4, characterized in that: The strengthening layer is located in the sink (6), and the outer end surface of the strengthening layer is flush with the outer end surface of the skeleton layer (1).

7. The deformation-resistant wooden plywood according to claim 1, characterized in that: The strengthening layer is a mesh structure.

8. The deformation-resistant wooden plywood according to claim 1, characterized in that: The reinforcement layer is a braided structure.

9. The deformation-resistant wooden plywood according to claim 1, characterized in that: The inner end surface of the surface layer is provided with a plurality of evenly distributed sinking grooves (41).

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