Anti-deformation solid wood composite door and preparation method

Abstract

The invention discloses an anti-deformation solid wood composite door and a preparation method, and relates to the field of composite doors, the anti-deformation solid wood composite door comprises a door core plate and door panels attached to the front and rear surfaces of the door core plate; the door core plate comprises a door edge and a latticed door core structure arranged in the door edge. The latticed door core structure is essentially an efficient plane truss system, and when the door body generates internal stress or bears external uneven force due to temperature and humidity changes, the latticed door core structure can rapidly disperse local stress and transmit the local stress to the whole door plate and the firm door frame, and warping and twisting caused by stress concentration are effectively avoided; on the premise that the structural strength is guaranteed, regular gaps are naturally formed through the gridding design, materials of non-bearing parts are removed, scientific light weight is achieved, the door weight is finally reduced, and loads on a door frame and hinges are relieved.

Description

Technical Field

[0001] This invention relates to the field of composite door technology, specifically to an anti-deformation solid wood composite door and its preparation method. Background Technology

[0002] Solid wood composite doors are a common type of interior door, widely used due to their aesthetic appeal and environmental friendliness. However, traditional solid wood composite door manufacturing often employs a single-leaf customization process, where materials are selected, assembled, and processed individually based on the dimensions of each door. This process suffers from low production efficiency, poor standardization, and low material utilization. Furthermore, because wood is susceptible to humidity and temperature fluctuations, traditional solid wood composite doors are prone to warping and cracking over long-term use, affecting their lifespan and appearance. In existing technologies, the door core structure often uses solid filling or simple splicing, lacking effective anti-deformation design, resulting in insufficient product stability. Summary of the Invention

[0003] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a deformation-resistant solid wood composite door and its preparation method.

[0004] The objective of this invention can be achieved through the following technical solutions: A type of anti-deformation solid wood composite door, comprising: Door core panel and door panel attached to the front and rear surfaces of the door core panel; The door core panel includes a door edge and a grid-like door core structure disposed within the door edge.

[0005] As a further aspect of the present invention: the mesh-like door core structure is formed by alternating stacking and gluing of multiple layers of first connecting plates and multiple layers of second connecting plates, with a first gap between the first connecting plates, and the second connecting plates are disposed in the first gap and glued and fixed to the first connecting plates.

[0006] As a further embodiment of the present invention: the door edge is formed by four door edge panels connected end to end to enclose a rectangular frame; Among them, the two vertical door edge panels arranged opposite each other are the first door edge panels, and the two horizontal door edge panels arranged opposite each other are the second door edge panels. The length direction of the first door edge panel is parallel to the length direction of the first connecting plate.

[0007] As a further aspect of the present invention: both the first connecting plate and the second connecting plate are perpendicular to the plane of the door core panel in their width direction, and both the first connecting plate and the second connecting plate are parallel to the plane of the door core panel in their thickness direction.

[0008] As a further aspect of the present invention: at least one mounting plate is provided within the mesh-like door core structure, the mounting plate being embedded in the mesh gaps of the mesh-like door core structure and replacing part of the original second connecting plate.

[0009] A method for preparing a deformation-resistant solid wood composite door, applicable to any of the aforementioned deformation-resistant solid wood composite doors, includes the following steps: S1: Obtain the core board of the anti-deformation solid wood composite door, wherein the core board includes a grid-like core structure; S2: Apply glue to both the front and back sides of the door panel; S3; Adhere the door panel to both sides of the adhesive applied to the door core panel; S4: Cold or hot pressing the bonded door core board and door panel to form a door blank; S5: Perform finishing on the door blank, including removing burrs from the surface of the door blank.

[0010] As a further aspect of the present invention: the step of obtaining the door core board includes: SS1: Obtain the core timber of the door, which consists of multiple layers: SS2: Cut the core wood into sections and saw them into core panels.

[0011] As a further aspect of the present invention: the step of obtaining the multi-layered door core timber includes: SSS1: Select a 20~60mm thick slab as the base plate: SSS2: On the base plate, a first layer of glued strips is laid vertically. The strips are coated with adhesive on both sides, and there are gaps between the strips. The length of the strips is the same as the width of the base plate and they are aligned. The length direction of the strips is the same as the width direction of the base plate. SSS4: Lay the first layer of plywood on the first layer of glued strips. The thickness of the plywood is 5~50mm, and the length and width of the plywood are the same as those of the base plate. SSS5: Lay the second layer of glued strips on the first layer of plywood in a vertical manner; SSS6: Repeat steps SSS4 and SSS5, alternating between laying plywood flat and vertically laying layers of glued veneer strips until the predetermined number of layers is reached; SSS7: Select a 20~60mm thick oriented plate as the top plate, and lay the top plate on the top layer to form a core layer stack. SSS8: Cold pressing of the core stack, including applying pressure toward a plane perpendicular to the bottom plate and toward a plane perpendicular to the top plate; SSS9: Cut and flatten the sides of the core stack; SSS10: Select a 20~60mm thick oriented board as the side board, attach the side board to the two opposite end faces of the core layer stack, and apply pressure to the side board. The pressure direction includes the board planes that are perpendicular to the two side boards respectively, to make the door core wood square. SSS10: Rotate the core wooden strip 90 degrees with the direction perpendicular to the end face as the central axis; SSS11: The core wood is slicing and cutting to the same thickness as the core board. The cutting direction is perpendicular to the plane of the bottom and top boards, and the blade direction is perpendicular to the plane of the side boards. The top and bottom boards are cut into the first side boards, and the side boards are cut into the second side boards. The entire structure composed of multi-layer plywood and multi-layer strips is cut into a grid-like core structure. The plywood is cut into the first connecting board, and the strips are cut into the second connecting board.

[0012] As a further aspect of the present invention: the width of the strips used in the adhesive strip layer is 5~100mm, the thickness is 5~50mm, the spacing between the strips is 5~100mm, and the thickness of the plywood is 5~50mm.

[0013] As a further aspect of the present invention: in steps SSS2 to SSS6, mounting strips are glued between the plywood and the wood board, and the mounting strips are sawn into mounting boards in SSS11.

[0014] The beneficial effects of this invention are as follows: The robust door edge ensures overall installation rigidity and precision, providing a smooth and aesthetically pleasing decorative surface for the door. Furthermore, through large-area bonding with the door core panel, it further constrains and solidifies the internal core layer's grid structure, forming a highly resistant "I"-shaped sandwich structure. This design effectively enhances the overall rigidity and impact resistance of the door, and isolates the door core panel from direct intrusion of moisture and dust.

[0015] Furthermore, the grid-like door core structure is essentially a highly efficient planar truss system. When the door body experiences internal stress due to temperature and humidity changes or is subjected to uneven external forces, this structure can quickly disperse and transfer local stress to the entire door panel and the sturdy door frame, effectively avoiding warping and twisting caused by stress concentration. The grid design, while ensuring structural strength, naturally forms regular gaps, eliminates non-load-bearing materials, achieves scientific lightweighting, and ultimately reduces the door weight, alleviating the load on the door frame and hinges.

[0016] This method effectively solves the technical problems of low production efficiency and poor product consistency in traditional wooden doors by first manufacturing large core timber and then sawing them into pieces using an industrialized process. This process integrates the scattered board splicing process into standardized, batch manufacturing of large-size timber. Uniform subsequent processing ensures the consistency of specifications and quality stability of a large number of core panels, realizing the transformation from single-piece customization to mass production and significantly improving production efficiency. Simultaneously, the rotation process before slitting ensures that the load-bearing direction of the internal structure of the timber precisely corresponds to the main load-bearing direction of the door leaf in actual use, optimizing the deformation resistance of the final product. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the anti-deformation solid wood composite door according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the core panel structure of the anti-deformation solid wood composite door according to an embodiment of the present invention; Figure 3 This is another structural schematic diagram of the core panel of the anti-deformation solid wood composite door according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the core wood square used in the method for preparing an anti-deformation solid wood composite door according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the door core stack in the method for preparing an anti-deformation solid wood composite door according to an embodiment of the present invention; Figure 6 This is another schematic diagram of the core wood for manufacturing the anti-deformation solid wood composite door according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the core wood square after being rotated 90 degrees in the method for preparing an anti-deformation solid wood composite door according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Door core panel; 2. Door panel; 11. Door edge; 12. Mesh door core structure; 121. First connecting plate; 122. Second connecting plate; 123. First gap; 111. First door edge panel; 112. Second door edge panel; 13. Mounting plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] See Figures 1-3 An anti-deformation solid wood composite door according to an embodiment of the present invention includes: a door core board 1 and a door panel 2 glued to the front and rear surfaces of the door core board 1; the door core board 1 includes a door edge 11 and a grid-like door core structure 12 disposed in the door edge 11.

[0022] Specifically, the robust door edge 11 ensures overall installation rigidity and precision, providing a smooth and aesthetically pleasing decorative surface for the door. Furthermore, through extensive bonding with the door core panel 1, it further constrains and solidifies the internal core layer's grid structure, collectively forming an "I"-shaped sandwich structure with extremely high bending strength. This design effectively enhances the overall rigidity and impact resistance of the door, while also preventing moisture and dust from directly intruding into the door core panel 11.

[0023] Furthermore, the grid-like door core structure 12 is essentially a highly efficient planar truss system. When the door body experiences internal stress due to temperature and humidity changes or is subjected to uneven external forces, this structure can quickly disperse and transfer local stress to the entire door panel and the sturdy door edge 11 frame, effectively avoiding warping and twisting caused by stress concentration. The grid design, while ensuring structural strength, naturally forms regular gaps, eliminates non-load-bearing materials, achieves scientific lightweighting, and ultimately reduces the door weight, alleviating the load on the door frame and hinges.

[0024] See Figures 1-3 Optionally, the mesh-like door core structure 12 is formed by stacking and gluing multiple layers of first connecting plates 121 and multiple layers of second connecting plates 122 alternately. There is a first gap 123 between the first connecting plates 121, and the second connecting plates 122 are disposed in the first gap 123 and glued and fixed to the first connecting plates 121.

[0025] In this embodiment, when the door panel generates internal stress due to changes in ambient humidity or uneven external loads, the longitudinal first connecting plate 121, acting as the "main beam," first bears the tensile and compressive stresses. The second connecting plate 122 then provides a shear transfer path. The adhesive surface between the two layers of plates quickly disperses the local stress to the entire grid area, avoiding stress concentration. The staggered adhesive design of the multi-layer first connecting plate 121 and the multi-layer second connecting plate 122 has higher shear and torsional resistance than the single door panel design in the prior art. See Figures 1-3 Optionally, the door edge 11 is formed by connecting four door edge panels end to end to enclose a rectangular frame; wherein, the two vertical door edge panels arranged opposite each other are the first door edge panels 111, and the two horizontal door edge panels arranged opposite each other are the second door edge panels 112, and the length direction of the first door edge panel 111 is parallel to the length direction of the first connecting plate 121.

[0026] In this embodiment, the door edge 11 frame not only provides installation rigidity and precision, but also forms an "I"-shaped sandwich structure by bonding it with the door core panel 1 to constrain the internal grid structure. Furthermore, both the first door edge panel 111 and the second door edge panel 112 are made of oriented boards, meaning that each door edge panel is composed of multiple layers of boards with their width direction perpendicular to the plane of the door core panel 1 and their thickness direction parallel to the plane of the door core panel 1. This multi-layered oriented board material design provides stronger shear resistance compared to a single-layer door panel.

[0027] See Figures 1-3 Optionally, the first connecting plate 121 and the second connecting plate 122 are both perpendicular to the plane of the door core panel 1 in their width direction, and both the first connecting plate 121 and the second connecting plate 122 are parallel to the plane of the door core panel 1 in their thickness direction.

[0028] In this embodiment, both the first connecting plate 121 and the second connecting plate 122 are arranged such that the width direction is perpendicular to the plane of the door core panel 1 and the thickness direction is parallel to the plane of the panel. This orientation enables the strips to form vertical support in the door core panel 1, optimizes the load-bearing direction, improves the compressive and bending resistance, ensures the stability of the door core panel 1 in the thickness direction, effectively resists out-of-plane deformation, further improves the deformation resistance and structural efficiency of the door core panel 1, and keeps the door flat when subjected to uneven loads.

[0029] See Figures 1-3 Optionally, at least one mounting plate 13 is provided in the mesh core structure 12. The mounting plate 13 is embedded in the mesh gaps of the mesh core structure 12 and replaces part of the original second connecting plate 122.

[0030] In this embodiment, the mounting plate 13 provides a localized reinforced area for installing door locks or other accessories without damaging the overall grid structure. This avoids weakening the door structure due to the installation of accessories and ensures the overall stability and service life of the door.

[0031] See Figures 1-7 The present invention discloses a method for preparing an anti-deformation solid wood composite door, applicable to any one of claims 2 to 5, characterized by comprising the following steps: S1: Obtain the core board 1 of the anti-deformation solid wood composite door, wherein the core board 1 includes a grid-like core structure 12; S2: Apply glue to the front and back sides of door panel 1; S3; Attach door panel 2 to both sides of the door core panel 1 after applying adhesive; S4: Cold-press or hot-press the bonded door core panel 1 and door panel 2 to form a door blank; S5: Perform finishing on the door blank, including removing burrs from the surface of the door blank.

[0032] In this embodiment, the above steps achieve efficient bonding between the door core panel 1 and the door panel 2, ensuring the structural integrity and surface quality of the door.

[0033] See Figures 1-7 Optionally, the steps for obtaining the door core panel 11 include: SS1: Obtain the core timber of the door, which consists of multiple layers: SS2: Cut the core wood into sections and saw them into core panels 1.

[0034] In this embodiment, the core wood is formed by standardized stacking and pressing, and the slicing ensures that each core panel is of the same specification. The manufacturer can saw the core wood into pieces to the thickness required by the customer, achieving efficient customization.

[0035] See Figures 4-7 Optionally, the steps for obtaining the multi-layered door core timber include: SSS1: Select 20-60mm thick oriented strand board (OSB) as the baseboard. OSB is an engineered wood product made of multiple layers of wood veneers glued and pressed together with the same grain direction (usually along the length). All veneers have the same fiber direction. Compared with pure solid lumber, OSB has about 3 times higher strength and toughness. Due to its laminated structure, it is not easy to deform or crack, providing a flat and solid starting plane for all subsequent layers, ensuring that the stacked body does not deform under pressure. SSS2: On the base plate, lay the first layer of glued strips in a vertical manner. The strips are coated with adhesive on both sides, and there are gaps between the strips. The length of the strips is the same as the width of the base plate and they are aligned. The length direction of the strips is the same as the width direction of the base plate. The strips can be made of wood strips or other board residues. SSS4: Lay the first layer of plywood on the first layer of glued strips. Use plywood as a spacer and leveling layer. Because of the cross-grain of each layer, plywood has the characteristics of dimensional stability and is not easy to warp. The thickness of the plywood is 5~50mm. The length and width of the plywood are the same as those of the base plate. SSS5: The second layer of glued strips is laid vertically on the first layer of plywood; Optionally, the mortar can be laid vertically or at an angle.

[0036] In this embodiment, multiple vertical laying methods provide laying flexibility, enhance the adaptability of the door core panel 1 design, and allow the selection of the best laying method according to the actual use environment, further improving the anti-deformation effect.

[0037] SSS6: Repeat steps SSS4 and SSS5, alternately laying plywood and vertically laying glued strips until the predetermined number of layers is reached. By controlling the number of repeated layers, the thickness and overall strength of the final door core panel 1 can be precisely controlled. Each strip is clamped and fixed by the upper and lower plywood layers. The entire stack forms a preliminarily stable whole before pressure is applied. In SSS2 to SSS6, the workers insert the installation plate into the gap between the plywood and the strips according to actual needs. SSS7: Select a 20~60mm thick veneer as the top veneer and lay it on the top layer to form a core layer stack. This ensures that the pressure is evenly transmitted from top to bottom during pressing, preventing the top layer of veneer and plywood from being damaged due to pressure concentration. The top veneer and bottom veneer together will become the door edge 11 of the door core panel 1 after cutting. The multi-layer veneer plane of the veneer (top veneer and bottom veneer) is parallel to the multi-layer plywood. SSS8: Cold pressing the core layer stack into shape, including applying pressure to the plane perpendicular to the bottom plate and to the plane perpendicular to the top plate, so that all adhesive layers (both sides of the strips, the upper and lower surfaces of the plywood) achieve the tightest contact, realize a strong bond, and ensure that the entire stack becomes a dense and high-strength whole. SSS9: The sides of the core stack are cut and flattened by mechanical processing methods such as sawing to obtain a stack with accurate dimensions and flat edges; SSS10: Select a 20~60mm thick veneer as the sideboard, attach the sideboard to the two opposite end faces of the core layer stack, the multi-layer veneer plane of the veneer (sideboard) is parallel to the bottom board plane, and apply pressure to the sideboard, the pressure direction including the board planes perpendicular to the two sideboards respectively, to make the door core wood square. SSS10: Rotate the core wood square 90 degrees with the central axis perpendicular to the end face. This operation reorients the internal structure of the wood square. After rotation, the bottom and top panels, which were originally the "top / bottom" surfaces, become the "side" surfaces of the wood square. This is the core step of this method. By combining the rotation in this step with the cutting in the next step, the core wood square 1 can be mass-produced in an industrialized manner, and the core wood square 1 can have stronger strain resistance. SSS11: The core wood is sliced ​​and cut to a thickness equal to the core board 1. The cutting direction is perpendicular to the plane of the bottom and top boards, and the blade direction is perpendicular to the plane of the side boards. After this cutting, the original bottom and top boards are cut into two first side boards 111, the original side boards are cut into two second side boards 112, the entire structure of multi-layer plywood and multi-layer strips is cut into a grid-like core structure 12, the original plywood is cut into first connecting boards 121, and the original strips are cut into... The second connecting plate 122 is arranged such that the first connecting plate 121 and the second connecting plate 122 are both perpendicular to the plane of the door core panel 1 in their width direction, and both the first connecting plate 121 and the second connecting plate 122 are parallel to the plane of the door core panel 1 in their thickness direction. The multi-layer single-layer plane of the forward plate (the two longitudinal door edge panels, i.e., the first door edge panel 111) is parallel to the width plane of the first connecting plate 121, and the multi-layer single-layer plane of the forward plate (the two transverse door edge panels, i.e., the first door edge panel 111) is parallel to the upper and lower narrow end faces of the first connecting plate 121.

[0038] The door core board 1 obtained through the above steps of obtaining the door core wood has stronger strain resistance in the direction perpendicular to the door core board 1 compared to the single door panel of the transmission: in the direction perpendicular to the door core board 1, the thickness direction of multiple parallel first connecting plates 121 is used to replace the single flat door panel, which has stronger strain resistance; and the use of a forward plate to replace the traditional single door panel makes the door edge 11 have stronger strain resistance.

[0039] In this embodiment, this step of the door core panel 1 realizes the transformation from single-piece customization to mass production, ensuring the quality stability and structural consistency of the door core panel 1. At the same time, the rotation process ensures that the load-bearing direction accurately corresponds to the usage requirements, significantly enhancing the resistance to deformation.

[0040] See Figures 4-7 Optionally, the width of the strips used in the glued strip layer is 5~100mm, the thickness is 5~50mm, the spacing between the strips is 5~100mm, and the thickness of the plywood is 5~50mm.

[0041] In this embodiment, scientific lightweighting is achieved while ensuring structural strength, reducing the door weight, and maintaining good resistance to deformation.

[0042] See Figures 4-7 Optionally, in steps SSS2 to SSS6, mounting strips are glued between the plywood and the wood board, and the mounting strips are sawn into mounting boards 13 in SSS11.

[0043] In this embodiment, the staff can glue the installation strips at appropriate positions according to the actual customer's customization needs. The strips can also be removed when necessary. After the installation strips are rotated and sawed, they become installation plates 13. This design of installation strips can also match the customer's customization needs. The same installation strip can be cut into multiple installation plates 13 of the same position and size.

[0044] This method effectively solves the technical problems of low production efficiency and poor product consistency in traditional wooden doors by first manufacturing large core timber and then sawing them into pieces using an industrialized process. This process integrates the scattered board splicing process into standardized, batch manufacturing of large-size timber. Uniform subsequent processing ensures the consistency and quality stability of a large number of core panels of specification 1, realizing the transformation from single-piece customization to mass production and significantly improving production efficiency. Simultaneously, the rotation process before slitting ensures that the load-bearing direction of the internal structure of the timber precisely corresponds to the main load-bearing direction of the door leaf in actual use, optimizing the deformation resistance of the final product.

[0045] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A type of anti-deformation solid wood composite door, characterized in that, include: Door core panel (1) and door panel (2) attached to the front and rear surfaces of the door core panel (1); The door core panel (1) includes a door edge (11) and a grid-like door core structure (12) disposed within the door edge (11).

2. The anti-deformation solid wood composite door according to claim 1, characterized in that, The mesh-like door core structure (12) is formed by stacking and gluing multiple layers of first connecting plates (121) and multiple layers of second connecting plates (122) alternately. There is a first gap (123) between the first connecting plates (121), and the second connecting plates (122) are disposed in the first gap (123) and glued and fixed to the first connecting plates (121).

3. The anti-deformation solid wood composite door according to claim 2, characterized in that, The door edge (11) is formed by connecting four door edge panels end to end to enclose a rectangular frame; Among them, the two vertical door edge plates arranged opposite each other are the first door edge plate (111), and the two horizontal door edge plates arranged opposite each other are the second door edge plate (112). The length direction of the first door edge plate (111) is parallel to the length direction of the first connecting plate (121).

4. The anti-deformation solid wood composite door according to claim 3, characterized in that, The first connecting plate (121) and the second connecting plate (122) are both perpendicular to the plane of the door core board (1) in their width direction, and both the first connecting plate (121) and the second connecting plate (122) are parallel to the plane of the door core board (1) in their thickness direction.

5. The anti-deformation solid wood composite door according to claim 4, characterized in that, At least one mounting plate (13) is provided inside the mesh-like door core structure (12). The mounting plate (13) is embedded in the mesh gap of the mesh-like door core structure (12) and replaces part of the original second connecting plate (122).

6. A method for preparing an anti-deformation solid wood composite door, applied to the anti-deformation solid wood composite door as described in any one of claims 2 to 5, characterized in that, Includes the following steps: S1: Obtain the core board (1) of the anti-deformation solid wood composite door, wherein the core board (1) includes a grid-like core structure (12). S2: Apply glue to the front and back sides of the door core panel (1); S3; Apply adhesive to both sides of the door core panel (1) and attach the door panel (2); S4: Cold-press or hot-press the bonded door core board (1) and door panel (2) to form a door blank; S5: Perform finishing on the door blank, including removing burrs from the surface of the door blank.

7. The method for preparing an anti-deformation solid wood composite door according to claim 6, characterized in that, The steps for obtaining the door core board (1) include: SS1: Obtain the core timber of the door, which consists of multiple layers: SS2: Cut the core wood into sections and saw them into core panels (1).

8. The method for preparing an anti-deformation solid wood composite door according to claim 7, characterized in that, The steps for obtaining the multi-layered core timber of a door include: SSS1: Select a 20~60mm thick slab as the base plate: SSS2: On the base plate, a first layer of glued strips is laid vertically. The strips are coated with adhesive on both sides, and there are gaps between the strips. The length of the strips is the same as the width of the base plate and they are aligned. The length direction of the strips is the same as the width direction of the base plate. SSS4: Lay the first layer of plywood on the first layer of glued strips. The thickness of the plywood is 5~50mm, and the length and width of the plywood are the same as those of the base plate. SSS5: Lay the second layer of glued strips on the first layer of plywood in a vertical manner; SSS6: Repeat steps SSS4 and SSS5, alternating between laying plywood flat and vertically laying layers of glued veneer strips until the predetermined number of layers is reached; SSS7: Select a 20~60mm thick oriented plate as the top plate, and lay the top plate on the top layer to form a core layer stack. SSS8: Cold pressing of the core stack, including applying pressure toward a plane perpendicular to the bottom plate and toward a plane perpendicular to the top plate; SSS9: Cut and flatten the sides of the core stack; SSS10: Select a 20~60mm thick oriented board as the side board, attach the side board to the two opposite end faces of the core layer stack, and apply pressure to the side board. The pressure direction includes the board planes that are perpendicular to the two side boards respectively, to make the door core wood square. SSS10: Rotate the core wooden strip 90 degrees with the direction perpendicular to the end face as the central axis; SSS11: The core wood is cut into pieces, with the cutting thickness being the thickness of the core board (1). The cutting direction is perpendicular to the plane of the bottom board and the top board, and the blade direction is perpendicular to the plane of the side board. The top board and the bottom board are cut into the first door side board (111), and the side board is cut into the second door side board (112). The whole composed of multi-layer plywood and multi-layer strips is cut into a grid-like core structure (12). The plywood is cut into the first connecting board (121), and the strips are cut into the second connecting board (122).

9. The method for preparing an anti-deformation solid wood composite door according to claim 8, characterized in that, The width of the strips used in the glued strip layer is 5~100mm, the thickness is 5~50mm, the spacing between the strips is 5~100mm, and the thickness of the plywood is 5~50mm.

10. The method for preparing an anti-deformation solid wood composite door according to claim 8, characterized in that, In steps SSS2 to SSS6, mounting strips are glued between the plywood and the wood board, and the mounting strips are sawn into mounting boards (13) in SSS11.

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