Wooden floor base material and wooden floor

Abstract

The utility model discloses a wooden floor base material and a wooden floor, and belongs to the field of wooden floors. The wooden floor base material comprises a frame plate blank defined by a middle batten and side battens, the side battens are located on the two sides of the middle batten in the width direction, a dividing groove is formed in the surface of the middle batten, and the extending depth of the dividing groove on the surface of the middle batten does not penetrate through the thickness of the middle batten; insert strips are installed in the dividing grooves in a matched mode and are made of metal materials or plastic materials. According to the wood floor, the problems of dry shrinkage, wet expansion and buckling deformation of the wood floor can be relieved in a targeted mode, and therefore the long-term use stability of the wood floor is improved.

Description

Technical Field

[0001] This utility model relates to the field of wood flooring technology, and more specifically, to a wood flooring substrate and a wood flooring. Background Technology

[0002] Flooring is a common material for floor decoration. Currently, the most common types of wood flooring on the market are solid wood flooring, which is made entirely of a single type of hardwood, and engineered wood flooring, which uses fast-growing softwood as the core material, backing board, and hardwood veneer as the surface. Among them, engineered wood flooring has advantages such as using less glue, being environmentally friendly, and not easily warping after installation, and it enjoys a certain degree of market acceptance both domestically and internationally.

[0003] Engineered wood flooring typically has a multi-layered structure, with layers bonded together by cold (or hot) gluing with adhesive. However, during manufacturing, installation, and use, the inherent shrinkage and expansion characteristics of multi-layered wood flooring, along with the anisotropy of wood fibers during deformation, make it prone to warping and deformation. This has always been a significant factor affecting the performance of flooring and a hot research topic in the industry.

[0004] Currently, a large number of technologies related to the design of wood flooring have been disclosed. For example, patent applications with publication numbers CN210439622U, CN219118630U, CN207727908U, and CN111648552A all involve structural optimization of wood composite flooring and have made some technical explorations into the problem of flooring warping and deformation. Although some progress has been made, in practice, it still cannot meet the market's demand for long-term and stable use of wood flooring. The industry is still exploring better solutions. Utility Model Content

[0005] 1. Technical problem to be solved by the utility model

[0006] The purpose of this invention is to overcome the problem that wooden flooring is prone to warping and deformation in the prior art, which affects its performance. This invention aims to provide a wooden flooring substrate and a wooden flooring. The wooden flooring of this invention helps to specifically alleviate the problems of dry shrinkage and wet expansion and warping deformation of wooden flooring, thereby improving the long-term stability of wooden flooring.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0009] This utility model discloses a wood flooring substrate intermediate blank, which includes a central wood strip. At least one dividing groove is formed on the surface of the central wood strip. The dividing groove extends continuously along the length direction of the intermediate blank, and the extension depth of the dividing groove on the surface of the central wood strip does not penetrate the thickness of the central wood strip. An inlay strip is installed in the dividing groove. The inlay strip is made of metal or plastic.

[0010] This utility model also provides a wood flooring substrate, which adopts the above-mentioned intermediate blank. The substrate includes a frame board blank surrounded by a central wood strip and side wood strips. The side wood strips are located on both sides of the width direction of the central wood strip, and the length extension direction of the inlay strip is parallel to the extension direction of the side wood strip.

[0011] Furthermore, the side strips and the middle strip are made of the same material and thickness, and the grain direction of the side strips is crisscrossed with that of the middle strip.

[0012] Furthermore, the central wooden strip of the substrate is composed of multiple short wooden strips of the same material and thickness, which are sequentially spliced ​​together. The multiple short wooden strips are arranged sequentially back and forth along the length of the substrate, and the wood grain of each short wooden strip is in the same direction; or / and, the inlay strip is an extruded aluminum alloy metal profile.

[0013] Furthermore, the depth of the dividing groove on the surface of the middle wooden strip does not exceed 2 / 3 of the thickness of the middle wooden strip, and the width-to-depth ratio of the dividing groove is greater than 3.5. The outer surface of the inlay strip is flush with the outer surface of the middle wooden strip.

[0014] Furthermore, the insert has outwardly protruding locking teeth on both sides of the inner wall of the dividing groove, which are locked into the inner wall of the dividing groove.

[0015] Furthermore, along the downward pressing installation direction of the inlay, the retaining teeth on both sides of the inlay have a tapered bevel that gradually slopes from the outer edge towards the center.

[0016] Furthermore, both the inlay strip and the dividing groove extend continuously to both ends of the length of the central wooden strip; and along the width direction of the central wooden strip, there are at least two sets of dividing grooves, with multiple sets of dividing grooves evenly spaced apart in the width direction.

[0017] Furthermore, the two ends of the central wooden strip in the width direction are installed with the side wooden strips on both sides using mortise and tenon joints.

[0018] This utility model also provides a wooden floor, which uses the substrate described above and has a surface panel attached to the surface of the substrate.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0021] (1) The wooden floor of this utility model has a dividing groove on the surface of the middle wooden strip, which can effectively prevent the substrate from warping. The dividing groove is fitted with metal or plastic strips. The strips are not sensitive to moisture and temperature but have excellent toughness, stability and strength, effectively overcoming the environmental influence of wood shrinkage and swelling, thus effectively alleviating the problem of warping and deformation of the wooden floor, extending the service life and long-term stability of the wooden floor.

[0022] (2) The wooden floor of this utility model has side strips and middle strips of the same material and thickness. They are spliced ​​together in the same layer to form a frame structure. The wood grain direction of the side strips and the wood grain direction of the middle strip are intersecting and mutually constraining each other. This can effectively prevent warping, twisting and other phenomena, and form a relatively stable self-balancing state. In addition, hard alloy strips are inlaid on the middle strip in the horizontal direction, which further effectively prevents the warping and deformation of the substrate and even the floor. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the substrate of the wooden floor in the embodiment, where (a) is a front view and (b) is a left view;

[0024] Figure 2 This is a schematic diagram of the structure of the dividing groove processed on the substrate in the embodiment, where (a) is a front view and (b) is a left view;

[0025] Figure 3 This is a schematic diagram of the structure of installing a strip in the substrate dividing groove in the embodiment, where (a) is a front view and (b) is a left view;

[0026] Figure 4 This is a schematic diagram of the forming state of the insert being extruded and installed in the dividing groove in the embodiment;

[0027] Figure 5 This is a schematic diagram of the floor slab blank in the embodiment.

[0028] Explanation of the labels in the diagram:

[0029] 100. Dashboard;

[0030] 200. Base material; 210. Middle strip; 211. Tenon; 212. Dividing groove; 220. Side strip;

[0031] 300, Inlay strip; 301, Teeth. Detailed Implementation

[0032] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] The present invention will be further described below with reference to the embodiments.

[0035] Example

[0036] Combination Figures 1-5 As shown, this embodiment of a wood flooring substrate intermediate blank includes a central wood strip 210. At least one dividing groove 212 is formed on the surface of the central wood strip 210. The dividing groove 212 extends continuously along the length direction of the intermediate blank, and the extension depth of the dividing groove 212 on the surface of the central wood strip 210 does not penetrate the thickness of the central wood strip 210. An inlay strip 300 is installed in the dividing groove 212. The inlay strip 300 is made of metal or plastic.

[0037] In practice, the inlay strip 300 is preferably made of extruded aluminum alloy metal profiles, copper profiles, or plastics such as PP profiles, and can be installed in the dividing groove 212 with an interference fit. The dividing groove 212 can be formed by sawing. By sawing the dividing groove 212 on the surface of the central wooden strip 210, the corrugated deformation of the substrate can be effectively avoided. The design of the inlay strip 300 is particularly important. In this embodiment, metal profiles such as hard aluminum alloy inlay strips that are not sensitive to moisture and temperature but have excellent toughness, stability, and strength are selected, or other engineering plastics that meet the requirements for toughness, stability, and strength. Compared with traditional wooden structures, this effectively overcomes the environmental effects of wood shrinkage and swelling, thereby effectively alleviating the problem of warping and deformation of wooden flooring, extending the service life and long-term stability of wooden flooring.

[0038] This embodiment also provides a wood flooring substrate, namely, using the aforementioned intermediate blank. Specifically, the substrate 200 includes a frame blank formed by a central wood strip 210 and side wood strips 220. The side wood strips 220 are located on both sides of the width direction of the central wood strip 210, and the length extension direction of the inlay strip 300 is parallel to the extension direction of the side wood strip 220. Similarly, at least one dividing groove 212 is formed on the surface of the central wood strip 210. The dividing groove 212 extends continuously along the length direction of the intermediate blank, and the extension depth of the dividing groove 212 on the surface of the central wood strip 210 does not penetrate the thickness of the central wood strip 210. An inlay strip 300 is installed in the dividing groove 212. The inlay strip 300 is made of metal or plastic, preferably aluminum alloy.

[0039] In practice, it is preferred that the side strips 220 and the middle strips 210 be made of the same material and thickness, and that they be joined together in the same layer to form a frame structure. Furthermore, the grain direction of the side strips 220 and the middle strips 210 are interwoven. Figures 1-3 As shown, the longitudinal side strips 220 and transverse middle strips 210 of the substrate 200 have wood grain arranged vertically and intersectingly in the same layer, which restrains each other and can effectively prevent warping, twisting and other phenomena, forming a relatively stable self-balancing state. In addition, a hard alloy strip extending along the length direction is inlaid on the transverse middle strip 210, which further forms a relatively stable self-balancing straight state in the same layer, thereby effectively preventing warping and deformation of the substrate and even the floor.

[0040] In practice, alternatively, the central wooden strip 210 of the substrate 200 can be composed of multiple short wooden strips of the same material and thickness, sequentially spliced ​​together. These short wooden strips are arranged sequentially along the length of the substrate 200, with the grain direction of each strip consistent. During processing, the central wooden strip 210 and the side wooden strips 220 can be made of fast-growing softwood and subjected to the same drying and balancing treatment. Preferably, the central wooden strip 210 and the side wooden strips 220 employ a detachable connection method, such as mortise and tenon joints. Tenons 211 can be machined at both ends of the central wooden strip 210 in the width direction, and corresponding grooves can be provided on the side wooden strips 220 for splicing.

[0041] Furthermore, the extension depth of the dividing groove 212 on the surface of the middle wooden strip 210 does not exceed 2 / 3 of the thickness of the middle wooden strip 210, and the width-to-depth ratio of the dividing groove 212 is greater than 3.5. The outer surface of the inlay strip 300 is flush with the outer surface of the middle wooden strip 210, so as to ensure that the inlay strip 300 can be smoothly embedded in the dividing groove 212 and has sufficient structural strength while ensuring the appearance quality of the product.

[0042] Furthermore, to achieve the locking installation of the 300-inch insert, such as... Figure 4As shown, the insert 300 has outwardly protruding locking teeth 301 on both sides of the inner wall of the dividing groove 212. When inserted downwards, the locking teeth 301 engage with the inner wall of the dividing groove 212 to achieve locking. Specifically, along the downward pressing installation direction of the insert 300, the locking teeth 301 on both sides of the insert 300 have a tapered bevel that gradually slopes from the outer edge to the center, so as to provide a certain guiding effect when pressed downwards, and facilitate the smooth insertion of the locking teeth 301 into the dividing groove 212, and ensure that it will not loosen upwards.

[0043] In this embodiment, both the inlay strip 300 and the dividing groove 212 extend continuously to both ends of the central wooden strip 210 along its length; and along the width direction of the central wooden strip 210, at least two sets of dividing grooves 212 are provided, with multiple sets of dividing grooves 212 evenly spaced apart in the width direction. (For example, in combination...) Figure 3 As shown, the two sets of dividing grooves 212 are respectively opened at 1 / 3 of the width direction of the middle wooden strip 210.

[0044] This embodiment also provides a wooden floor, which uses the substrate 200 as described above, and has a panel 100 attached to the surface of the substrate 200.

[0045] This embodiment specifically provides a two-layer wood flooring, using high-quality hardwood veneer as the top layer 100 and fast-growing softwood veneer as the base material 200. The top layer 100 can be a single piece or spliced ​​together. The top layer 100 can be produced by sawing or rotary planing, both of which require processing such as moisture balancing, stress relief, and flatness adjustment. By creating dividing grooves 212 in the base material 200, corrugated deformation of the board blank can be avoided. At the same time, the installation of hard aluminum alloy strips can control the longitudinal bending of the two-layer flooring blank and ensure that the two-layer flooring will not warp or deform during manufacturing and use due to the different wood materials of the base material 200 and the top layer 100.

[0046] In this embodiment, the two-layer solid wood composite flooring is made by cold pressing a blank after applying glue to a substrate 200, inlay strips 300 and a top panel 100. The solid wood composite flooring made from this blank has the advantages of simple structure, no warping or deformation, and excellent bending resistance.

[0047] The specific construction process is as follows: fast-growing softwood boards are selected and processed through drying, cutting, sawing, planing, and splicing to form the desired shape. Figure 1 The two-layer structure flooring blank substrate 200 shown has dimensions of 2440*220*12mm. Two dividing grooves 212 are machined into the central wooden strip 210 of the substrate 200, each groove being 2mm wide and 8mm deep. The substrate 200 is then... Figure 4The extruded aluminum alloy strip shown is installed into the dividing groove 212 of the substrate 200. Adhesive is applied to the side with the dividing groove 212 and it is assembled with the surface plate 100 with a thickness of 3mm. After roll pressing and stacking, it is sent into a hydraulic press with a self-locking function for cold pressing and curing to form a two-layer structure floor blank of 2440*220*15mm.

[0048] The above description is illustrative of the present invention and its embodiments. This description is not restrictive and is merely one embodiment of the present invention, and is not actually limited thereto. Therefore, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wood flooring substrate, characterized by: The substrate (200) includes a frame board blank formed by a central wooden strip (210) and side wooden strips (220). At least one dividing groove (212) is provided on the surface of the central wooden strip (210). The dividing groove (212) extends continuously along the length of the central wooden strip (210), and the extension depth of the dividing groove (212) on the surface of the central wooden strip (210) does not penetrate the thickness of the central wooden strip (210). An inlay strip (300) is installed in the dividing groove (212). The inlay strip (300) is made of metal or plastic. The side strips (220) are located on both sides of the width of the middle strip (210); the length extension direction of the inlay strip (300) is parallel to the extension direction of the side strips (220); the grain direction of the side strips (220) is interwoven with the grain direction of the middle strip (210).

2. The wood flooring substrate according to claim 1, wherein: The side strips (220) and the middle strips (210) are made of the same material and have the same thickness.

3. The wood flooring substrate of claim 1, wherein: The central wooden strip (210) of the substrate (200) is made of multiple short wooden strips of the same material and thickness spliced ​​together in sequence. The multiple short wooden strips are arranged and spliced ​​together in sequence along the length direction of the substrate (200), and the wood grain direction of each short wooden strip is consistent; or / and, the inlay strip (300) is an extruded aluminum alloy metal profile.

4. The wood flooring substrate of claim 1, wherein: The extension depth of the dividing groove (212) on the surface of the middle wooden strip (210) does not exceed 2 / 3 of the thickness of the middle wooden strip (210), and the width-to-depth ratio of the dividing groove (212) is greater than 3.

5. The outer surface of the inlay (300) is flush with the outer surface of the middle wooden strip (210).

5. A wood flooring substrate according to any one of claims 1 to 4, wherein: The insert (300) has outward protruding locking teeth (301) on both sides of the inner area of ​​the dividing groove (212), and the locking teeth (301) are locked in the inner wall of the dividing groove (212).

6. The wood flooring substrate according to claim 5, wherein: Along the downward pressing installation direction of the strip (300), the toothed portion (301) on both sides of the strip (300) has a tapered bevel that gradually slopes from the outer edge to the center.

7. A wood flooring substrate according to any one of claims 1 to 4, wherein: The inlay strip (300) and the dividing groove (212) extend continuously to both ends of the length direction of the central wooden strip (210); and at least two sets of dividing grooves (212) are provided along the width direction of the central wooden strip (210), and multiple sets of dividing grooves (212) are evenly spaced in the width direction.

8. A wood flooring substrate according to any one of claims 1 to 4, wherein: The two ends of the central wooden strip (210) in the width direction are installed with the side wooden strips (220) on both sides using mortise and tenon joints.

9. A wood flooring, characterized by: The substrate (200) as described in any one of claims 1-8 is used, and a panel (100) is attached to the surface of the substrate (200).

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