Anti-stretching three-layer laminated structure based on wood grain sorting and manufacturing process

Abstract

The invention discloses an anti-stretching three-layer laminated structure based on wood grain sorting and a manufacturing process, and belongs to the technical field of home decoration wood. The wood board body comprises a first panel layer, a middle core layer and a second panel layer which are sequentially stacked. The vertical beams and the cross beams are sequentially spliced end to end to form an outer frame; a plurality of vertical partition plates and transverse partition plates are connected to the inner side of the outer frame and are sequentially spliced in a staggered mode to form an inner frame. The outer frame and the inner frame are combined to form a frame-shaped structure, plate grooves are formed in all hollowed-out positions of the frame-shaped structure, and inner core plates are connected to the inner sides of all the plate grooves. In the frame-shaped structure, the wood grain directions of the vertical beams, the cross beams, the vertical partition plates and the transverse partition plates extend in the respective length directions; the wood grain direction of each inner core plate extends in the length / width direction of the inner core plate, and the inner core plates extending in the length direction and the inner core plates extending in the width direction are distributed in a staggered mode in the frame-shaped structure. Arrangement is carried out according to the wood grain direction, and the deformation and cracking risks caused by internal stress release are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of home decoration wood, and in particular relates to an anti-expansion three-layer laminated structure based on wood grain sorting and a manufacturing process. Background Art

[0002] In the home furnishing industry, wood panels are widely used as the mainstream structural materials for cabinet doors. These panels are mainly divided into two categories: artificial panels and natural log panels. Specifically, natural log panels are made from carefully selected whole logs, which gives them unparalleled environmental protection characteristics, natural wood grain and excellent hand feel. However, as a scarce resource, natural logs are in limited supply, and the log material itself has poor moisture resistance, and the manufacturing process of log furniture is complicated, resulting in high production costs. Therefore, the application scope of log panels is mainly limited to high-end furniture in the high-end market.

[0003] In contrast, artificial boards are composed of a middle core layer and a surface material. The materials for the middle core layer are diverse, and common substrates include plywood, density fiberboard, and particle board. Since artificial boards can flexibly adjust their formulas to meet different needs, they are more widely used in the market, making up for the defect that log boards are difficult to popularize due to resource limitations and cost issues. In practical applications, the choice of each substrate will profoundly affect the overall strength, environmental protection level, and moisture resistance of artificial boards. For example, in the prior art, a Chinese patent with publication number CN2902693Y discloses an artificial composite board, which also mentions that the existing artificial boards have low strength, heavy weight, and high cost; however, although this prior art has improved strength, it cannot achieve the texture of solid wood and has poor visual effects.

[0004] Moreover, the intermediate core boards made of plywood, density board, particle board and other boards on the market have the following disadvantages:

[0005] 1) The intermediate core board is made of plywood, which has many layers and uses a large amount of glue. For example, in the prior art, the Chinese patent with publication number CN2043548U discloses a bamboo and wood shavings composite plywood, which mentions the use of bamboo and wood shavings to make composite plywood. In addition to using a large amount of glue and being environmentally unfriendly, this prior art also uses one-time hot pressing molding, and this hot pressing molding technology requires higher production conditions and technical level, making the production cost of the overall composite plywood higher. The prior art also has multi-layer solid wood plywood to maintain the texture of the log, but this multi-layer solid wood plywood is also bonded by multiple layers of glue, and has poor environmental performance.

[0006] 2) The middle core board is made of density board, which is cheap but not moisture-proof and easy to deform, and it is difficult to meet the requirements of long-term use;

[0007] 3) The intermediate core board is made of particle board. Although this particle board has good moisture resistance, it has low strength and poor load-bearing capacity.

[0008] In addition, wood naturally contains a certain amount of moisture in its internal fiber structure, which allows it to self-regulate according to changes in the humidity of the surrounding environment: in a high-humidity environment, wood absorbs water vapor and expands; conversely, in a dry environment, it releases moisture and shrinks. This expansion and contraction process inevitably causes the wood to deform. In view of this, in the early stages of modern furniture manufacturing, wood needs to undergo a drying process to release and balance the internal stress of the wood, thereby effectively preventing cracking. However, although the drying process can significantly reduce the moisture content inside the wood, it still takes several years for it to completely evaporate before the wood can gradually stabilize, thereby reducing the risk of cracking in subsequent use. It is worth noting that even after a complete drying process, a certain amount of stress may still remain inside the wood. Therefore, in the subsequent wood processing stage, the changes in wood stress must be fully considered to further eliminate these residual stresses.

[0009] Compared with natural log boards, the common artificial boards on the market have a significant feature in the manufacturing process: the texture direction of the middle core board is often highly consistent, that is, the wood grain or fiber arrangement direction of the middle core board is the same. This consistency of texture direction will cause the middle core board to expand and contract in the same direction when encountering external forces or changes in environmental temperature and humidity, thereby generating significant internal stress accumulation. This accumulation of stress not only weakens the overall structural stability of the artificial board, but also easily causes internal cracking of the product during use. These cracks not only destroy the appearance integrity of the product and reduce its aesthetic value, but more importantly, they will significantly shorten the service life of the product, increase subsequent maintenance costs, and even in some extreme cases, may cause safety hazards.

[0010] Therefore, there is an urgent need for an anti-telescoping three-layer laminated structure and manufacturing process based on wood grain sorting that can effectively reduce internal stress and improve structural stability to solve the above problems and meet the market's multiple demands for beauty, durability and environmental protection. Summary of the invention

[0011] In response to the problems in the related technology, the present invention proposes an anti-telescoping three-layer laminated structure and manufacturing process based on wood grain sorting to overcome the above-mentioned technical problems existing in the existing related technology. The present invention extends the wood grain direction of the vertical beams, horizontal beams, vertical partitions, and horizontal partitions along their respective length directions, so that the internal stresses after the outer frame / inner frame are connected can be offset by each other; moreover, the multiple inner core boards are designed to be staggered in the frame structure according to the wood grain direction, so that the internal stresses generated by the multiple inner core boards arranged in the same column or row can offset each other, thereby avoiding deformation and cracking of the wooden board body.

[0012] The technical solution of the present invention is implemented as follows: an anti-telescopic three-layer laminated structure based on wood grain sorting includes a wood board body, the wood board body includes a first panel layer, a middle core layer and a second panel layer stacked in sequence;

[0013] The middle core layer includes a plurality of vertical beams and a plurality of horizontal beams, which are spliced ​​end to end in sequence to form an outer frame; a plurality of vertical partitions and horizontal partitions are connected to the inner side of the outer frame, which are staggered and spliced ​​in sequence to form an inner frame; the outer frame and the inner frame are combined to form a frame-shaped structure, and each hollow part of the frame-shaped structure forms a plate groove, and the inner side of each plate groove is connected to an inner core plate to form a stable internal support structure;

[0014] In the frame structure, the wood grain directions of the vertical beams, horizontal beams, vertical partitions, and horizontal partitions all extend along their respective length directions; the wood grain directions of each of the inner core boards all extend along their length / width directions, wherein the inner core boards extending along the length direction and the inner core boards extending along the width direction are staggered in the frame structure;

[0015] The four sides of each inner core plate are connected to the vertical beam / cross beam / vertical partition / cross partition through the splicing assembly; each vertical partition is connected to the cross beam / cross partition respectively through the splicing assembly; the cross partition is connected to the vertical beam through the splicing assembly;

[0016] The first panel layer and the second panel layer are connected to the front and back surfaces of the intermediate core layer respectively; wherein the wood grain direction of the surface of each panel layer extends along the respective length direction.

[0017] Furthermore, the splicing assembly includes a side extension plate and a slot, and the side extension plate is snap-connected with the slot.

[0018] Further, a plurality of fixing rods are provided on the front side of the side extension plate, and a plurality of fixing grooves for the fixing rods to be inserted into the slot are provided in the slot; the width of the side extension plate is greater than the depth of the slot; after the side extension plate is engaged with the slot, a telescopic gap is formed at a position of the side extension plate not covered by the slot;

[0019] Furthermore, the width of the expansion gap ranges from 4 to 6 mm, with 5 mm being preferred.

[0020] Furthermore, the side extension plates are arranged around the inner core plate, and the side extension plates protrude in a direction away from the inner core plate; the vertical beams / horizontal beams / vertical partitions / horizontal partitions are all provided with the card slots.

[0021] Furthermore, the vertical partition is provided with the slots on both sides thereof along its length direction, and the side extension plates are provided on both sides thereof along its width direction.

[0022] Furthermore, the clamping grooves are provided on both sides of the transverse partition along its length direction, and the side extension plates are provided on both sides along its width direction.

[0023] Furthermore, the inner core board is a solid wood finger-jointed board, so that the inner core board not only has excellent load-bearing and durability, but also has high resistance to bending and deformation. The design of this solid wood finger-jointed board can effectively reduce the deformation of the wooden board body caused by moisture or temperature changes, and maintain the stability and aesthetics of the wooden board body.

[0024] Further, the width of the transverse partition is in the range of 110-130 mm, preferably 120 mm; the width of the vertical partition is in the range of 70-90 mm, preferably 78 mm; the length of the inner core plate is in the range of 310-330 mm, preferably 322 mm; the width of the inner core plate is in the range of 150-170 mm, preferably 163 mm;

[0025] Furthermore, the thickness of the first panel layer and the second panel layer is not less than 3 mm, preferably 3 mm;

[0026] Furthermore, the thickness of the wooden board body ranges from 40 to 50 mm, preferably 30 mm;

[0027] It should be noted that in actual production, the above-mentioned length, width and thickness are allowed to have millimeter-level errors.

[0028] Furthermore, the first panel layer, the middle core layer and the second panel layer are processed into an integrated structure through a cold press forming process;

[0029] It also includes edge sealing, which covers all sides of the wooden board body; the first panel layer, the second panel layer and the edge sealing strip are made of logs, so that the surface of the wooden board body has clear and real wood grain texture, natural beauty, good durability and wear resistance; moreover, the log material on the surface is easy to clean and maintain, and the service life is extended; in addition, the panel layer and edge sealing made of logs meet environmental protection and health requirements, and the materials and processes used in the manufacturing process of the wooden board body are environmentally friendly and will not pollute the indoor air quality.

[0030] A manufacturing process of a telescopic three-layer laminated structure based on wood grain sorting, used for manufacturing the above-mentioned telescopic three-layer laminated structure based on wood grain sorting, the manufacturing process comprising the following steps:

[0031] Step S1: material selection and pretreatment; cutting the dried wood into a first panel layer, a second panel layer, edge banding, vertical beams, horizontal beams, vertical partitions, horizontal partitions and inner core boards, and selecting and classifying them according to the texture;

[0032] Step S2: assembling the middle core layer frame; first, the vertical partitions and the horizontal partitions are staggered and plugged in sequence to form an inner frame, and then the inner core board is plugged into the inner frame, and then plugged into the slots of the vertical beams and the horizontal beams to form a complete middle core layer; wherein the inner core boards extending along the length direction and the inner core boards extending along the width direction are staggered on the inner frame, and the wood grain directions of the vertical beams, the horizontal beams, the vertical partitions, and the horizontal partitions all extend along their respective length directions;

[0033] Step S3: cold press forming; the first panel layer and the second panel layer are connected to the front and back sides of the middle core layer respectively, the first panel layer, the middle core layer and the second panel layer are placed in a cold press machine and processed into an integrated structure through a cold press forming process; wherein the wood grain direction of the surface of each panel layer extends along its own length direction;

[0034] Step S4: edge banding treatment; the edge banding is covered around the main body of the wooden board, and finally an anti-expansion three-layer laminated board based on wood grain sorting is obtained.

[0035] Beneficial effects of the present invention:

[0036] (1) The present invention intentionally extends the wood grain direction of the vertical beams, horizontal beams, vertical partitions, and horizontal partitions along their respective length directions, so that the internal stresses after the outer frame / inner frame are connected can be offset by each other; moreover, the multiple inner core boards are designed to be staggered in the frame structure according to the wood grain direction, so that the internal stresses generated by the multiple inner core boards arranged in the same column or row can be offset by each other, thereby avoiding deformation and cracking of the main body of the wooden board and extending its service life.

[0037] (2) The arrangement of the splicing components realizes the connection between the inner core board, the outer frame, and the inner frame. Therefore, compared with the multi-layer solid wood plywood in the prior art, the present invention is more environmentally friendly and healthier, reduces the amount of adhesive used, does not release formaldehyde, and meets environmental protection and health requirements.

[0038] (3) In addition, the wood grain direction of the surface of each panel layer extends along its own length direction to avoid the panel layer from becoming larger in the width direction after expansion and contraction, thereby further reducing the problem of deformation and cracking on the surface of each panel layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of an anti-expansion three-layer laminated structure based on wood grain sorting of the present invention;

[0040] Figure 2 It is a schematic diagram of the structural decomposition of a three-layer anti-expansion laminated structure based on wood grain sorting of the present invention;

[0041] Figure 3 It is a schematic diagram of the structural decomposition of the middle core plate of the present invention;

[0042] Figure 4 It is a schematic structural diagram of an inner core plate extending along the length direction of the present invention;

[0043] Figure 5 It is a schematic structural diagram of an inner core plate extending along the width direction of the present invention;

[0044] Figure 6 A front view of a diaphragm of the present invention;

[0045] Figure 7 A top view of the diaphragm of the present invention;

[0046] Figure 8 It is a structural schematic diagram of the frame structure of the present invention;

[0047] Fig. 9 It is a structural schematic diagram of the inner frame and the outer frame of the present invention;

[0048] Fig.10 It is a schematic diagram of the direction of the wood grain texture of the middle core layer of the present invention.

[0049] Marking Description:

[0050] 1. Wood board body; 2. First panel layer; 3. Middle core layer; 31. Outer frame; 311. Vertical beam; 312. Horizontal beam; 32. Inner frame; 321. Vertical partition; 322. Horizontal partition; 33. Board groove; 34. Inner core board; 4. Second panel layer; 5. Side extension board; 51. Fixing rod; 6. Card slot; 61. Fixing groove; 7. Edge sealing. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] like Figure 1-2 As shown, this embodiment provides an anti-telescopic three-layer laminated structure based on wood grain sorting, including a wood board body 1, wherein the wood board body 1 includes a first panel layer 2, an intermediate core layer 3 and a second panel layer 4 stacked in sequence;

[0054] The middle core layer 3 includes a plurality of vertical beams 311 and a plurality of horizontal beams 312, and the vertical beams 311 and horizontal beams 312 are sequentially spliced ​​end to end to form an outer frame 31;

[0055] Specifically, the vertical beam 311 and the horizontal beam 312 can be bonded to form the outer frame 31 by adhesive, or can be spliced ​​to form the outer frame 31 by mortise and tenon structures;

[0056] like Figure 3 , Figure 8 and Fig. 9 As shown, a plurality of vertical partitions 321 and horizontal partitions 322 are connected to the inner side of the outer frame 31, and the vertical partitions 321 and horizontal partitions 322 are staggered and spliced ​​in sequence to form an inner frame 32; the outer frame 31 and the inner frame 32 are combined to form a frame-shaped structure, and each hollow part of the frame-shaped structure forms a plate groove 33, and the inner side of each plate groove 33 is connected to an inner core plate 34, forming a stable internal support structure;

[0057] like Fig.10 As shown, in the frame structure, the wood grain directions of the vertical beams 311, horizontal beams 312, vertical partitions 321, and horizontal partitions 322 all extend along their respective length directions; Figure 3-5 As shown, the wood grain direction of each of the inner core boards 34 extends along the length / width direction thereof, wherein the inner core boards 34 extending along the length direction and the inner core boards 34 extending along the width direction are staggered in the frame structure;

[0058] It should be noted that there are many pores inside the wood. These pores will absorb or lose moisture according to the moisture content in the air. When absorbing moisture, the tubes will become thicker, but not too long. So what we see is that the width direction becomes larger, but there is no change in the length direction. Therefore, when cutting, the width needs to be segmented and the length is extended as much as possible. After the wooden boards are spliced, the internal stresses will offset each other, greatly reducing the deformation and cracking of the board surface.

[0059] According to the above principle, the wood grain directions of the vertical beams 311, horizontal beams 312, vertical partitions 321, and horizontal partitions 322 are deliberately extended along their respective length directions in this embodiment, so that the internal stresses after the outer frame 31 / inner frame 32 are connected can be offset by each other; moreover, the multiple inner core boards 34 are staggeredly distributed in the frame structure according to the wood grain direction, so that the internal stresses generated by the multiple inner core boards 34 arranged in the same column or row can be offset by each other, further avoiding deformation and cracking of the wooden board body 1 and extending the service life;

[0060] The four sides of each inner core plate 34 are connected to the vertical beam 311 / cross beam 312 / vertical partition 321 / cross partition 322 through the splicing assembly; each vertical partition 321 is connected to the cross beam 312 / cross partition 322 through the splicing assembly; the cross partition 322 is connected to the vertical beam 311 through the splicing assembly;

[0061] In this embodiment, the arrangement of the splicing assembly realizes the connection of the inner core board 34, the outer frame 31, and the inner frame 32. Therefore, compared with the multi-layer solid wood plywood in the prior art, this embodiment is more environmentally friendly and healthy, reduces the amount of adhesive used, does not release formaldehyde, and meets environmental protection and health requirements;

[0062] The first panel layer 2 and the second panel layer 4 are respectively connected to the front and back sides of the middle core layer 3; wherein, the wood grain direction of the surface of each panel layer extends along its own length direction to avoid the situation where each panel layer becomes larger in the width direction after expansion and contraction, thereby reducing deformation and cracking problems on the surface of each panel layer.

[0063] The splicing assembly includes a side extension plate 5 and a card slot 6, and the side extension plate 5 is engaged with the card slot 6;

[0064] Specifically, a plurality of fixing rods 51 are provided on the front side of the side extension plate 5, and a plurality of fixing grooves 61 for the fixing rods 51 to be inserted into the clamping slot 6 are provided; the width of the side extension plate 5 is greater than the depth of the clamping slot 6; after the side extension plate 5 is clamped with the clamping slot 6, a telescopic gap is formed at the position of the side extension plate 5 not covered by the clamping slot 6;

[0065] More specifically, the width of the expansion gap ranges from 4 to 6 mm, preferably 5 mm;

[0066] like Figure 4-5 As shown, the inner core plate 34 is provided with the side extension plate 5 around it, and the side extension plate 5 protrudes in the direction away from the inner core plate 34; the vertical beam 311 / the horizontal beam 312 / the vertical partition plate 321 / the horizontal partition plate 322 are all provided with the card slot 6;

[0067] like Figure 3 As shown, the vertical partition plate 321 is provided with the slots 6 on both sides arranged along the length direction thereof, and is provided with the side extension plates 5 on both sides arranged along the width direction thereof.

[0068] like Figure 6-7 As shown, the two sides of the transverse partition 322 arranged along the length direction thereof are provided with the slots 6, and the two sides arranged along the width direction thereof are provided with the side extension plates 5;

[0069] It should be noted that: in this embodiment, the snap-fit ​​connection design of the side extension plate 5 and the snap-fit ​​groove 6 effectively enhances the connection stability between the various plates of the middle core layer 3, making the overall structure of the middle core layer 3 more stable and not easy to loosen. Moreover, by plugging the fixing rod 51 into the fixing groove 61, the firmness and reliability of the connection are further improved, ensuring the stability and durability of the structure under various use conditions.

[0070] Specifically, the inner core board 34 is a solid wood finger-jointed board, so that the inner core board 34 not only has excellent load-bearing and durability, but also has high resistance to bending and deformation. The design of this solid wood finger-jointed board can effectively reduce the deformation of the wooden board body 1 caused by moisture or temperature changes, and maintain the stability and aesthetics of the wooden board body 1.

[0071] Specifically, the width of the transverse partition 322 ranges from 110 to 130 mm, preferably 120 mm; the width of the vertical partition 321 ranges from 70 to 90 mm, preferably 78 mm; the length of the inner core plate 34 ranges from 310 to 330 mm, preferably 322 mm; the width of the inner core plate 34 ranges from 150 to 170 mm, preferably 163 mm;

[0072] Specifically, the thickness of the first panel layer 2 and the second panel layer 4 is not less than 3 mm, preferably 3 mm;

[0073] More specifically, the thickness of the wooden board body 1 ranges from 40 to 50 mm, preferably 30 mm;

[0074] It should be noted that in actual production, the above-mentioned length, width and thickness are allowed to have millimeter-level errors.

[0075] like Figure 2 As shown, the first panel layer 2, the middle core layer 3 and the second panel layer 4 are processed into an integrated structure through a cold pressing process;

[0076] The present embodiment realizes the structural integration of the wooden board body 1 by using the wooden board plugging and cold pressing forming technology; moreover, compared with the multi-layer solid wood plywood in the prior art, the wooden board body 1 of the present embodiment is more environmentally friendly; compared with the density board and density board on the market, the wooden board body 1 of the present embodiment has good overall stability, strong bearing capacity, is not easy to deform, and has a long service life;

[0077] like Figure 1 and Figure 7 As shown, it also includes edge sealing 7, and the edge sealing 7 covers the four sides of the wooden board body 1; the first panel layer 2, the second panel layer 4 and the edge sealing 7 are made of logs, so that the surface of the wooden board body 1 has clear and real wood grain texture, natural beauty, good durability and wear resistance; moreover, the log material on the surface is easy to clean and maintain, and the service life is extended; in addition, the panel layer and edge sealing 7 made of logs meet the requirements of environmental protection and health, and the materials and processes used in the manufacturing process of the wooden board body 1 are environmentally friendly and will not pollute the indoor air quality.

[0078] like Figure 3 , Fig. 9 and Fig.10 As shown, this embodiment also provides a manufacturing process of an anti-telescoping three-layer laminated structure based on wood grain sorting, which is used to manufacture the above-mentioned anti-telescoping three-layer laminated structure based on wood grain sorting, and the manufacturing process includes the following steps:

[0079] Step S1: material selection and pretreatment; cutting the dried wood into a first panel layer 2, a second panel layer 4, an edge banding 7, a vertical beam 311, a horizontal beam 312, a vertical partition 321, a horizontal partition 322 and an inner core board 34, and selecting and classifying them according to the texture;

[0080] Step S2: assembling the middle core layer frame; first, the vertical partitions 321 and the horizontal partitions 322 are staggered and plugged in sequence to form an inner frame 32, and then the inner core board 34 is plugged into the inner frame 32, and then plugged into the slots 6 of the vertical beams 311 and the horizontal beams 312 to form a complete middle core layer 3; wherein the inner core boards 34 extending along the length direction and the inner core boards 34 extending along the width direction are staggered on the inner frame 32, and the wood grain directions of the vertical beams 311, the horizontal beams 312, the vertical partitions 321, and the horizontal partitions 322 all extend along their respective length directions;

[0081] Step S3: cold press forming; the first panel layer 2 and the second panel layer 4 are connected to the front and back sides of the middle core layer 3 respectively, and the first panel layer 2, the middle core layer 3 and the second panel layer 4 are placed in a cold press machine and processed into an integrated structure through a cold press forming process; wherein the wood grain direction of the surface of each panel layer extends along its own length direction;

[0082] Step S4: edge sealing treatment; the edge sealing 7 is covered around the wooden board body 1, and finally an anti-expansion three-layer laminated board based on wood grain sorting is obtained.

[0083] The above manufacturing process effectively avoids the internal stress accumulation caused by the disorder of wood texture by carefully selecting and sorting the wood and arranging it accurately according to the direction of the wood grain. This not only reduces the risk of deformation and cracking caused by the release of internal stress during the use of the product, but also prolongs the service life of the product.

[0084] Moreover, the reasonable setting of the wood grain direction not only helps to eliminate internal stress, but also enhances the overall strength of the structure to a certain extent. Especially during the cold press forming process, the consistency of the wood grain direction makes the wood fibers more closely arranged, thereby improving the product's load-bearing capacity and anti-deformation ability.

[0085] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. An anti-telescopic three-layer laminated structure based on wood grain sorting, comprising a wood board body, wherein the wood board body comprises a first panel layer, an intermediate core layer and a second panel layer stacked in sequence, characterized in that: The middle core layer includes a plurality of vertical beams and a plurality of horizontal beams, which are sequentially spliced ​​end to end to form an outer frame; a plurality of vertical partitions and horizontal partitions are connected to the inner side of the outer frame, which are sequentially staggered and spliced ​​to form an inner frame; the outer frame and the inner frame are combined to form a frame-shaped structure, and each hollow portion of the frame-shaped structure forms a plate groove, and the inner side of each plate groove is connected to an inner core plate; In the frame structure, the wood grain directions of the vertical beams, horizontal beams, vertical partitions, and horizontal partitions all extend along their respective length directions; the wood grain directions of each of the inner core boards all extend along their length / width directions, wherein the inner core boards extending along the length direction and the inner core boards extending along the width direction are staggered in the frame structure; The four sides of each inner core plate are connected to the vertical beam / cross beam / vertical partition / cross partition through the splicing assembly; each vertical partition is connected to the cross beam / cross partition respectively through the splicing assembly; the cross partition is connected to the vertical beam through the splicing assembly; The first panel layer and the second panel layer are connected to the front and back surfaces of the intermediate core layer respectively; wherein the wood grain direction of the surface of each panel layer extends along the respective length direction.

2. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 1 is characterized in that: The splicing assembly comprises a side extension plate and a clamping slot, and the side extension plate is clamped and connected with the clamping slot.

3. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 2 is characterized in that: The front side of the side extension plate is provided with a plurality of fixing rods, and the slot is provided with a plurality of fixing grooves for the fixing rods to be inserted; the width of the side extension plate is greater than the depth of the slot; after the side extension plate is engaged with the slot, a telescopic gap is formed at the position of the side extension plate not covered by the slot.

4. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 3 is characterized in that: The side extension plates are arranged around the inner core plate, and the side extension plates protrude in a direction away from the inner core plate; the vertical beams / horizontal beams / vertical partitions / horizontal partitions are all provided with the card slots.

5. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 3 is characterized in that: The vertical partition is provided with the clamping grooves on both sides arranged along the length direction thereof, and the side extension plates are provided on both sides arranged along the width direction thereof.

6. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 3 is characterized in that: The clamping grooves are provided on both sides of the transverse partition along the length direction thereof, and the side extension plates are provided on both sides along the width direction thereof.

7. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 1 is characterized in that: The inner core board is a solid wood finger-jointed board; the width of the horizontal partition board is in the range of 110-130 mm; the width of the vertical partition board is in the range of 70-90 mm; the length of the inner core board is in the range of 310-330 mm, and the width of the inner core board is in the range of 150-170 mm.

8. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 1, characterized in that: The first panel layer, the middle core layer and the second panel layer are processed into an integrated structure through a cold press forming process; It also includes edge sealing, which covers the four sides of the wooden board body; the first panel layer, the second panel layer and the edge sealing strip are made of logs.

9. The anti-telescopic three-layer laminated structure based on wood grain sorting according to claim 1, characterized in that: The thickness of the first panel layer and the second panel layer is not less than 3 mm.

10. A manufacturing process of a telescopic three-layer laminated structure based on wood grain sorting, used for manufacturing a telescopic three-layer laminated structure based on wood grain sorting according to any one of claims 1 to 9, characterized in that: The manufacturing process comprises the following steps: Step S1: material selection and pretreatment; cutting the dried wood into a first panel layer, a second panel layer, edge banding, vertical beams, horizontal beams, vertical partitions, horizontal partitions and inner core boards, and selecting and classifying them according to the texture; Step S2: assembling the middle core layer frame; first, the vertical partitions and the horizontal partitions are staggered and plugged in sequence to form an inner frame, and then the inner core board is plugged into the inner frame, and then plugged into the slots of the vertical beams and the horizontal beams to form a complete middle core layer; wherein the inner core boards extending along the length direction and the inner core boards extending along the width direction are staggered on the inner frame, and the wood grain directions of the vertical beams, the horizontal beams, the vertical partitions, and the horizontal partitions all extend along their respective length directions; Step S3: cold press forming; the first panel layer and the second panel layer are connected to the front and back sides of the middle core layer respectively, the first panel layer, the middle core layer and the second panel layer are placed in a cold press machine and processed into an integrated structure through a cold press forming process; wherein the wood grain direction of the surface of each panel layer extends along its own length direction; Step S4: edge banding treatment; the edge banding is covered around the main body of the wooden board, and finally an anti-expansion three-layer laminated board based on wood grain sorting is obtained.

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