CN116409033A

CN116409033A - Composite board capable of adjusting concave-convex and bending of board surface

Info

Publication number: CN116409033A
Application number: CN202211570767.9A
Authority: CN
Inventors: 张家铭; 张棋惠; 许倍嘉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2023-07-11
Also published as: CN111300928B; CN111300928A

Abstract

The invention relates to a composite board capable of adjusting the concave-convex and bending of a board surface, which comprises: a plurality of grooves which are consistent with the wood fiber direction of the core plate are formed in one surface of the core plate, and the concave-convex state of the core plate is adjusted through the grooves; and a balance plate attached to the surface of the core plate provided with the groove. The invention aims to reasonably apply the bending stress in the wood board and the rotary-cut veneer, and the concave-convex state of the board surface and the control of the bending direction of the board surface are adjusted by utilizing the matching of the grooves and the bending stress in the wood board and the rotary-cut veneer. The composite board with the other two layers of structures greatly reduces the consumption of glue and reduces the negative influence caused by formaldehyde. The composite board with the two-layer structure reduces the number of glue layers, improves the production efficiency, reduces the processing and production process of finished products, reduces the cost of labor, time, materials and the like, and can better conform to the requirements of the market on collocation and cost reduction of various different scenes.

Description

Composite board capable of adjusting concave-convex and bending of board surface

The invention relates to a Chinese patent application with the application number of 202010250594.7, which is a divisional application of a composite board capable of adjusting the surface roughness and bending (application date: 1 month 4 in 2020).

Technical Field

The invention relates to a composite board capable of adjusting the concave-convex and bending of a board surface, in particular to a composite board with grooves which are formed in the upper surface of a core board and are consistent with the wood fiber direction of the core board, so that the concave-convex and bending direction of the board surface can be adjusted.

Background

The solid wood composite board is applied to the indoor decoration and furniture fields for quite long time, especially in the wood floor field, is wide in material acquisition and use economy, the wood board used in the market at present is low in cost, small in deformation and the like besides the traditional solid wood board, and is widely selected by the consumer, and the solid wood multilayer composite board mainly comprises solid wood multilayer composite board substrates formed by matching different thicknesses and numbers of veneer boards or solid wood veneers, and longitudinal panels made of high-grade wood are attached to the solid wood multilayer composite board surfaces in a glue water cooling and hot pressing mode, so that good visual effects of the solid wood substrate thickness and the high-grade solid wood board can be provided, the solid wood composite board made of traditional high-grade solid wood is replaced, and the solid wood composite board can be used as a material for making furniture or floor, has lower price, smoother and stable quality, and better different choices can be provided for consumers or downstream manufacturers.

The veneer spinning and solid wood veneers used in the solid wood multilayer composite board are divided according to the material drawing mode, wherein the material drawing mode of the solid wood veneers comprises chord cutting, diameter cutting and engraving cutting, the material drawing mode of the veneer spinning is processed and produced by rotary cutting equipment, the material yield of the rotary cutting mode is highest, and the cost is low.

Referring to fig. 63, a schematic structural diagram of a solid wood three-layer composite floor board used in the prior art is shown, wherein it can be clearly seen that the solid wood composite board 70 includes a surface layer 72, a bottom layer 74 and a plurality of sandwich boards 76, wherein the sandwich boards 76 are solid wood battens, and the plurality of sandwich boards 76 are connected in series with each other by ropes 71 after sawing the separated battens, and then are sandwiched between the surface layer 72 and the bottom layer 74. The sandwich panel 76 is obtained by subtracting the thickness of the panel and the bottom skin from the total thickness of the solid wood three-layer composite finished floor, matching with the matched thickness of the sandwich panel 76, and matching with glue blank for lamination. The processing and production mode is that the solid wood board with the thickness of 20 to 35mm is obtained by sawing and slitting the solid wood board with the width of 20 to 20mm by adopting a plurality of saws at the distance of 10 to 20mm after the solid wood board is processed and produced by thicknessing and sanding the solid wood board, the solid wood strip of the

sandwich panel

76, 10 to 20mm thick, is then sawn at a longitudinal strip surface of 20 to 35mm wide, 2 to 3mm deep perpendicular to the direction of the strip fibers of the sandwich panel 76, with a saw cut of a plurality of grooves 1.5mm wide, and then, the hemp ropes or paper ropes with the diameter of about 2mm are used to be buckled in the grooves, so that the battens are spliced and connected into long plates in a rope-stringing mode, as shown in fig. 64, the waste of sawing roads for thicknessing, sanding and preparing materials and cutting the battens of the sandwich plates 76 is very large, and the connecting procedures of rope-stringing equipment for connecting the sandwich plates 76 are additionally added, so that the labor force and the material loss are large, and the production cost of the product is relatively high. In addition, when the dry and wet degree in the atmosphere is greatly changed, the floor will expand due to moisture absorption, so that the assembled floor blocks will push each other to form gaps at the joint between the floor and the floor caused by arching or drying shrinkage, thus forming a middle recess of the floor surface, and also causing tile or warping phenomenon on the floor surface, affecting the functions of visual beauty, practicality, etc. Furthermore, because gaps with unequal local size exist between the spliced battens formed by the inexact string rope splicing of the plurality of small solid wood battens, the surface layer 72 with the thickness of more than 3.0mm is attached to the upper part of the plurality of sandwich boards 76 by glue to cover, the defects that the formed concave or visual strip-shaped gaps are completely reflected when the thinner panel layers are used in the splicing gaps of the plurality of sandwich boards 76 battens, and the fault gaps with uneven serial splicing of the sandwich boards 76 battens and uneven material density are required to be covered by adopting the noble surface layers with attractive appearance and larger thickness can be avoided or solved. Thus, the manufacturing cost of the finished board is greatly increased.

Referring to fig. 65, a schematic structural diagram of a composite board made of a conventional rotary-cut multi-layer veneer is shown, wherein it can be clearly seen that the rotary-cut composite board 80 is made of a plurality of longitudinal veneer boards 82 and a plurality of transverse veneer boards 84 which are laminated in a staggered manner, and a layer of higher-grade longitudinal panel can be adhered to the surface of the composite board, so that the composite board has better visual effect on noble wood; the production of the rotary-cut composite board 80 still needs a great deal of manpower, and under the condition of continuously increasing the manpower cost, the quality and market competitiveness of the rotary-cut composite board 80 are inevitably reduced, and a great deal of glue is required to be used in the production, so that the formaldehyde has negative influence on the environment; moreover, contact with chemically manufactured glues and inhalation of respiratory tract for a long time can also have negative effects on the health of the production personnel and the consumers who use the products for a long time later.

Referring to fig. 66, which is a chinese patent application (patent application No. 201210506350.6, entitled composite board of solid wood or veneer flooring with grooves) proposed by the present inventor, the composite board 90 includes a solid wood or veneer flooring 92 with longitudinal wood grains, a transverse veneer 94 adhered to the surface of the solid wood or veneer flooring 92, a longitudinal panel 96 adhered to the other side of the transverse veneer 94, and longitudinal grooves 921 and transverse grooves 922 formed on the surface of the solid wood or veneer flooring 92. After the transverse and longitudinal grooves are formed, the solid wood or veneer bottom plate becomes lower in static bending strength and larger in brittleness, and is easy to break when being stepped on by larger gravity, so that the transverse veneer 94 and the longitudinal panel 96 are adhered to the solid wood or veneer bottom plate, and the overall structural strength of the composite board is improved. However, the structure is designed in such a way that the bending degree and the bending direction of the plate surface cannot be effectively controlled, and the static bending strength of the product can be greatly reduced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provide a composite board with concave-convex and bending adjustable board surface, and solve the problem that the negative effect of formaldehyde exists due to the fact that a large amount of glue is used for a large number of structural layers in the existing composite board.

The technical scheme for achieving the purpose is as follows:

the invention provides a collocation of a composite board which is formed by regularly bending a plate which is cut by cutting solid wood or rotary cut veneers with different thicknesses by using saw grooves with different angles, depths, groove numbers and log rotary cut veneers, wherein the plate is provided with dark cracks and internal stress, and the composite board with adjustable and controllable plate surface concavity and convexity, bending direction or flatness can be manufactured without pressing by using a concavity and convexity die, and the collocation comprises the following steps:

a plurality of grooves which are consistent with the wood fiber direction of the core plate are formed in one surface of the core plate, and the concave-convex and bending states of the core plate are adjusted through the grooves; and

the balance plate is attached to the surface of the core plate, which is provided with the groove.

The composite board is characterized in that a groove with the same wood fiber direction as the groove is formed in one surface of the core board, and the concave-convex and bending states of the core board are adjusted by the groove. The invention aims to reasonably apply the internal stress of the wood, and the concave-convex and bending states of the board are adjusted by utilizing the natural regular bending angle coordination of the internal stress of the wood and the groove, so that the board has the artificial required bending direction. The wood veneer is different from the existing transverse and longitudinal grooves formed on the solid wood or veneer, and the transverse and longitudinal grooves formed in the prior art are used for destroying fibers in the wood, so that the internal stress of the wood is destroyed, and the board surface becomes soft and flat. The groove in the invention has the functions of adjusting the concave-convex state of the plate surface, flexibly utilizing the deformation rule of the wood, controlling the flatness of the plate and the bending direction of the composite plate without using a bending die for processing, greatly reducing the die investment cost and obtaining low-cost and high-efficiency yield. The composite board has the required concave-convex state, the use requirement of the composite board can be met only by sticking a layer of balance board on the composite board, the balance board can also be used as a veneer, the glue consumption of the composite board with a two-layer structure is greatly reduced, and the negative influence caused by formaldehyde is reduced. The composite board with the two-layer structure reduces the number of glue layers, improves the production efficiency, reduces the processing and production process of finished products, reduces the cost of labor, time, glue and the like, and can better conform to market demands.

The invention further improves the composite board with the concave-convex adjustable board surface, wherein the included angle formed between the groove and the surface of the core board is more than or equal to 30 degrees and less than or equal to 150 degrees.

The invention further improves the composite board with the concave-convex adjustable board surface, wherein the grooves are arranged in a splayed mode.

The invention further improves the composite board with the concave-convex adjustable board surface, wherein the grooves are arranged in a mirror image way by taking the middle part of the core board as an axis.

The invention further improves the composite board with the concave-convex surface adjustable by the invention, wherein the core board is a rotary-cut veneer; or the core board is a solid wood board.

The invention further improves the composite board with the adjustable board surface concave-convex, wherein the grooves are arranged in a mode of depth from deep to shallow to deep.

The invention further improves the composite board with the adjustable board surface concave-convex, wherein the grooves are arranged in a mode of depth from shallow to deep to shallow.

The invention further improves the composite board with the adjustable board surface concave-convex, wherein the grooves are arranged from sparse to dense to sparse.

The invention further improves the composite board with the adjustable board surface concave-convex, wherein the grooves are arranged from dense to sparse to dense.

The invention further improves the composite board with the concave-convex adjustable board surface, wherein the balance board is a rotary-cut single board or a solid board, and the wood fiber direction of the balance board is perpendicular to the wood fiber direction of the core board.

The invention further improves the composite board with the concave-convex surface, which is characterized in that the surface of the balance board, which is attached to the core board, is provided with a groove.

The invention further improves the composite board with the concave-convex adjustable board surface, wherein the balance board is made of metal materials, inorganic nonmetallic materials or high polymer materials.

The invention further improves the composite board with the concave-convex adjustable board surface, which is characterized by further comprising grid cloth matched with the size of the core board, wherein the grid cloth is attached to the opposite surface of the core board, to which the balance board is attached.

The invention further improves the composite board with the concave-convex adjustable board surface, which is characterized by further comprising grid cloth matched with the size of the core board, wherein the grid cloth is clamped between the core board and the balance board.

The invention further improves the composite board with the concave-convex adjustable board surface, which is characterized by further comprising connecting strips arranged on the end surface of the core board.

The invention further improves the composite board with the concave-convex surface, which is characterized in that the connecting edge strips on the end surface of the core board are made of wood, bamboo, wood plastic, high polymer materials or nonmetallic materials.

The invention also provides a composite board with concave-convex and bending adjustable board surface, which comprises:

a plurality of grooves which are consistent with the wood fiber direction of the core plate are formed in one surface of the core plate, and the concave-convex state of the core plate is adjusted through the grooves;

the balance plate is adhered to the surface of the core plate provided with the groove; and

and the panel is adhered to the opposite surface of the core plate, and the balance plate is adhered to the opposite surface of the core plate.

The invention further improves the composite board with the concave-convex surface, which is characterized in that the surface of the balance board, which is attached to the core board, is provided with a groove; or the opposite surfaces of the balance plate and the core plate are provided with grooves.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a composite board with adjustable board surface roughness according to the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic view of the internal structure of the structure of fig. 1 with part of the balance plate omitted.

Fig. 4 is a schematic cross-sectional view of a rotary-cut veneer used for a core plate of a composite board with adjustable surface roughness and bending direction according to the present invention.

Fig. 5 is a schematic cross-sectional view of the upper surface of the core plate of the present invention with straight grooves.

Fig. 6 is a schematic cross-sectional view of a core plate of the present invention with straight grooves on the lower surface.

Fig. 7 is a schematic cross-sectional view of the upper surface of the core plate of the present invention provided with inclined grooves.

Fig. 8 is a schematic cross-sectional view of the lower surface of the core plate of the present invention provided with inclined grooves.

Fig. 9 is a schematic cross-sectional view of a straight groove with depth from deep to shallow to deep provided on a core plate in the present invention.

Fig. 10 is a schematic perspective view of the core plate of fig. 9.

Fig. 11 to 14 are schematic cross-sectional views of inclined grooves with different inclination angles formed on a core of a composite board according to the present invention.

Fig. 15 and 16 are schematic views showing the structure of the composite board of the present invention in two concave-convex states.

Fig. 17 is a schematic view of a structure in which inclined grooves are formed in a core plate in mirror image arrangement about a central portion.

Fig. 18 is a schematic view of the structure of the present invention in which the core plate is provided with the straight grooves having the depth from deep to shallow to deep.

Fig. 19 is a schematic view of the structure of the inclined grooves formed on the core plate from deep to shallow to deep.

Fig. 20 is a schematic view of a structure of the present invention in which straight grooves are provided on a core plate.

FIG. 21 is an exploded view of a second embodiment of the composite board with adjustable board surface relief of the present invention.

Fig. 22 is a combined schematic view of the structure shown in fig. 21.

Fig. 23 and 24 are schematic structural views of still another embodiment of the composite board with adjustable board surface roughness according to the present invention.

Fig. 25 is a side view of a straight channel from deep to shallow to deep in the core plate of the present invention.

Fig. 26 is a schematic perspective view of the structure shown in fig. 25.

Fig. 27 is a schematic view showing an internal structure of a composite board with part of the balance board omitted in the third embodiment of the invention.

FIG. 28 is a schematic view of a composite board with concave interior surfaces as a wall finish.

Fig. 29 is a top view of fig. 28.

Fig. 30 is an enlarged partial schematic view of fig. 28 at a corner.

Fig. 31 is a schematic view of a circular arc shaped composite plate wrapped around a cylinder.

Fig. 32 is an exploded view of a fourth embodiment of a composite board with adjustable board surface relief according to the present invention.

Fig. 33 is a combined schematic view of the internal structure shown in fig. 32.

Fig. 34 is an exploded view of a fifth embodiment of the composite board with adjustable board surface roughness according to the present invention.

Fig. 35 is a schematic structural view of a sixth embodiment of a composite board with adjustable board surface roughness according to the present invention.

Fig. 36 to 38 are schematic structural views of another embodiment of a composite board with adjustable board surface roughness according to the present invention.

FIG. 39 is an exploded view of a seventh embodiment of a composite board with adjustable board surface relief according to the present invention.

FIG. 40 is a schematic combination diagram of FIG. 39 with portions of the balance plate omitted.

Fig. 41 is an exploded view of an eighth embodiment of the composite board with adjustable board surface roughness.

Fig. 42 is an enlarged partial schematic view of a recess shown in fig. 41.

Fig. 43 is a schematic diagram showing the combination of the structures shown in fig. 41.

Fig. 44 is an enlarged partial schematic view of a recess shown in fig. 43.

Fig. 45 and 46 are schematic structural views of two preferred versions of the groove.

Fig. 47 is an exploded view of a ninth embodiment of the composite board with adjustable board surface roughness of the present invention.

FIG. 48 shows the balance plate of the present invention a schematic view of a preferred version of the groove.

Fig. 49 is an exploded view of a tenth embodiment of the composite board with adjustable board surface roughness according to the present invention.

FIG. 50 is an exploded view of an eleventh embodiment of a composite board with adjustable board surface relief according to the present invention.

FIG. 51 is an exploded view of a twelfth embodiment of a composite board with adjustable board surface relief according to the present invention.

Fig. 52 and 53 are schematic structural views of two other embodiments of the composite board with adjustable board surface roughness according to the present invention.

FIG. 54 is a schematic view showing the internal structure of a composite board with surface irregularities and end portions omitted from part of the face sheets and core sheets according to a thirteenth embodiment of the present invention.

Fig. 55 is an exploded view of the internal structure shown in fig. 54.

Fig. 56 and 57 are schematic structural views of still another embodiment of the composite board with adjustable board surface roughness according to the present invention.

FIG. 58 is an exploded view of a fourteenth embodiment of a composite sheet material with adjustable surface relief according to the present invention.

Fig. 59 is an exploded view of a fifteenth embodiment of a composite board with panel roughness adjustment and omitting a portion of the face sheet and core sheet according to the present invention.

Fig. 60 is a schematic view of a sixteenth embodiment of a composite board with adjustable surface roughness and omitting part of the face plate and the core plate according to the present invention.

FIG. 61 is an exploded view of a seventeenth embodiment of a composite sheet material with adjustable surface relief according to the present invention.

FIG. 62 is a combined schematic of FIG. 61 with portions of the face sheets and core plates omitted.

Fig. 63 is an exploded view of a solid wood three-layer composite panel according to the prior art.

Fig. 64 is a schematic view of a plurality of panels of fig. 63 connected in a rope-string manner.

Fig. 65 is an exploded view of a rotary-cut veneer multi-layer solid wood composite board of the prior art.

Fig. 66 is an exploded view of a rotary-cut bedplate composite board of the prior art.

Detailed Description

The invention will be further described with reference to the drawings and the specific examples.

Referring to fig. 1, the invention provides a composite board capable of adjusting the concave-convex state of the board surface and bending, which is used for realizing conscious, scientific and reasonable application of wood stress. Specifically, the stress of the wood is controlled through the angle, the depth and the density of the groove, so that the deformation and bending direction of the wood plate surface is adjusted, the regular deformation direction of the rotary-cut wood is flexibly utilized, the artificial effective good control is realized, and the corresponding market demand is met. The structure of the composite board with the uneven and curved surface of the board of the present invention will be described with reference to the accompanying drawings.

Referring to fig. 1, a schematic structure of a first embodiment of the composite board with adjustable board surface roughness and bending according to the present invention is shown. Referring to fig. 2, an exploded view of fig. 1 is shown. Referring to fig. 3, a schematic illustration of the structure of fig. 1 is shown with a portion of the balance plate omitted. The following describes a composite board with surface irregularities and bending adjustment according to the present invention with reference to fig. 1 to 3.

As shown in fig. 1 to 3, the composite board 20 with adjustable board surface roughness and bending of the present invention comprises a core board 21 and a balance board 23, wherein a surface of the core board 21 is provided with a plurality of grooves which are consistent with the wood fiber direction, and the concave-convex and bending state of the core board 21 is adjusted by the grooves. The balance plate 23 is attached to the grooved surface of the core plate 21.

The wood is different in material and material drawing modes, and the following steps are included: the invention provides a rotary cutting board for log, which is characterized in that log is cut, carved and chord-cut into solid wood boards with different positions in a sawing way, and different stress and different deformation direction rules are generated. Preferably, the angles, the depths and the densities of the grooves are correspondingly arranged and combined, and accordingly, the concave-convex and bending states of the plate surface are adjusted.

The balance plate is arranged on the core plate and can be used as a facing, so that the composite board provided by the invention has only two layers of structural plates, the glue consumption can be reduced, the negative influence caused by formaldehyde is reduced, the production efficiency is improved, and the production cost is reduced.

In one embodiment of the present invention, as shown in fig. 4, the core 21 is a rotary cut veneer having an inner concave surface 213 and an outer concave surface 211, and a dark crack 210 due to the rotary cutter process is likely to be formed in the inner concave surface 213 of the rotary cut veneer. Fig. 4 shows a natural state of the rotary-cut veneer after drying, which is itself curved, and the curved shape is an arc shape with a central arch. The invention effectively aims at the shape formed by processing the rotary-cut single plate, a plurality of grooves, such as straight grooves 214a, are formed on the outer convex surface 211 of the rotary-cut single plate, as shown in fig. 5 and 7, or a plurality of grooves, such as inclined grooves 212a, are formed on the inner concave surface 213 of the rotary-cut single plate, as shown in fig. 6 and 8, the concave-convex state of the plate surface is adjusted by the grooves, so that the curvature of the rotary-cut single plate is effectively controlled, and the purpose of adjusting the bending deformation direction and the bending degree of the rotary-cut single plate is achieved under the condition that a die is not used.

According to the long-term production rule of the solid wood composite wood floor, the wood floor is often subjected to stress deformation after the glue used for the floor panel, the thick core plate and the balance bottom plate is attached and solidified, so that the regular forward bending phenomenon that the two ends of the middle plate face of the long side of the floor are concave downwards occurs, and the natural bending state of the core plate 21 formed by rotary cutting is just opposite to the forward bending phenomenon, and the core plate 21 formed by rotary cutting can be used after being adjusted due to the large bending radian of the core plate 21 formed by rotary cutting. As shown in fig. 9 and 10, grooves, such as straight grooves 214b, are provided on the outer convex surface 211 of the core 21 formed by rotary cutting, so that the core 21 is adjusted to have a slightly arched state in the middle, and after the balance plate 23 is attached thereto (as shown in fig. 27), the two layers of composite plates 20 are combined, and the cross section of the composite plates 20 has an arched state in which both end sides of the middle are slightly arched and slightly bent downward, and the long side plates of the composite plates 20 have an arched shape bent downward, as shown in fig. 16. When the composite board core board 21 with the downward bending arc shape is provided with a plurality of grooves on the outer convex surface, the composite board core board can be used as a wood floor, can be more compliant and conformable with the ground, is convenient to install, and the core board 21 keeps the downward soft arc-shaped state of the two ends under the action of the internal stress of the core board, so that the wood floor can be well restrained from being bent or warped in long-term use, and the paving quality, the installation efficiency and the long-time smooth and stable use of the wood floor can be improved. In another embodiment, as shown in fig. 15, the core 21 is adjusted to have a slightly downward curved state at both end sides by the grooves, the middle part is flat, and after the balance plate 23 is attached thereto, the two layers of composite boards 20 are combined, and the same middle part of the composite boards 20 has a slightly downward curved state at both end sides, so that when the composite boards are used as a wood floor, the surface flatness can be ensured, and the occurrence of forward bending, warping and height difference phenomenon of the butt joint surfaces of the end parts of the floor after pavement can be restrained through the downward curved both end sides of the wood floor when the wood floor is used. And the compound bottom with the two ends bent downwards is more compliant and more compliant when being paved, thereby being convenient for installation. In still another embodiment, as shown in fig. 4, a groove is provided in the inner concave surface 213 of the core 21 formed by rotary cutting, the core 21 can be adjusted to have a larger bending radian, the bending degree can be adjusted to be a quarter arc shape at the maximum, and as shown in fig. 28 to 30, the groove is provided in the inner concave surface 213 of the core 21, the inner concave surface 213 of the core 21 is in a concave curved surface state, a balance plate 23 is attached to the inner concave surface 213, the balance plate 23 also serves as a facing, the exposed surface of the composite plate is a concave curved surface, and can be used for decorating corners of a wall surface, the composite plate with the concave curved surface is butted with a flat composite plate, and an arc transition is formed at the corners of the wall surface, thereby improving decoration aesthetic feeling and convenient construction with low cost.

In another preferred embodiment, the core is a solid wood board. The solid wood board can be used for wooden doors, cambered wooden doors or combined into a cambered partition wall and the like.

In one embodiment of the present invention, the balance plate 23 is a rotary cut single plate or a solid wood plate, and the wood fiber direction thereof is perpendicular to the wood fiber direction of the core plate 21. The wood fiber direction of the balance plate is perpendicular to the wood fiber direction of the core plate, wood fibers can be mutually restrained and balanced, the balance plate exerts balance force on the surface of the core plate provided with the groove, the limitation on the core plate is formed, and the structural stability of the core plate is improved.

In another preferred embodiment, the balance plate 23 is made of a metal material, an inorganic nonmetallic material, or a polymer material. Specifically, the raw materials of the balance board can be wood, paper, bamboo, stone and high polymer materials, stone powder and thermoplastic high polymer mixed materials (SPC), wood powder, rice husk, straw, bamboo and other plant fibers are mixed into new wood materials (WPC), melamine board materials and the like.

In one embodiment of the present invention, the angle formed between the grooves and the surface of the core 21 is in the range of 30 degrees or more and 150 degrees or less. The grooves of the present invention may be inclined grooves, straight grooves, or both.

In the first embodiment, as shown in fig. 1 to 3, the grooves formed on the upper surface 211 of the core 21 are inclined grooves 212a, and the inclined grooves 212a are arranged in a splayed manner. The splayed shape can be a positive splayed shape or an inverted splayed shape. The example shown in fig. 1 is in the form of an inverted figure. Preferably, the splayed inclined grooves 212a are arranged at equal intervals.

The inclined grooves which are arranged in the splayed shape and cut at an inclined angle are adopted, so that the effects of balancing the deformation stress of the core plate and avoiding the static bending strength of the core plate from being greatly reduced can be achieved, the shape of the plate surface of the core plate is maintained, and the core plate is restrained from being bent and deformed in the forward direction. The composite board formed by combining the splayed-shaped inclined grooves has better stability, when the splayed-shaped inclined grooves are arranged on the core board in pairs, the pair of inclined grooves incline towards two directions, when the core board is pressed or is damped to deform, deformation can occur towards two directions, deformation forces in the two directions can offset each other, and a balance plate attached to the core board cannot be influenced, so that the structural stability of the composite board is improved.

In the first embodiment, as shown in fig. 1 to 3, the wood fiber direction of the core 21 is transverse, and the arrangement direction of the inclined grooves 212a is also transverse. The balance board 23 is a wooden board, and the wooden fiber direction thereof is the longitudinal direction.

In the second embodiment, as shown in fig. 20 to 22, the grooves formed in one surface of the core plate 21 are straight grooves 214a, and the straight grooves 214a are arranged at equal intervals. The wood fiber direction of the core 21 is transverse, the direction in which the straight grooves 214a are provided is also transverse, the balance plate 23 is a wood board, and the wood fiber direction thereof is longitudinal.

In still another embodiment, as shown in fig. 23 and 24, the grooves formed in the upper surface 211 of the core 21 include inclined grooves 212b, and the inclined grooves 212b are arranged in mirror image about the central portion of the core 21. Further, a straight groove 214a is provided in the middle of the core 21, and the inclined grooves 212b are arranged in mirror image with the straight groove 214a as an axis.

In one embodiment of the present invention, the grooves are arranged in a depth-to-depth manner. As shown in fig. 9 and 10, in this example, the grooves are straight grooves 214b, and the depth of the straight grooves 214b varies from shallow to deep, that is, the depth of the straight grooves in the middle of the core 21 is shallower, and the depths of the straight grooves on both end sides are sequentially shallow to deep from the middle to both end sides. In this example, the straight grooves 214b are arranged at equal intervals, the wood fiber direction of the core 21 is the longitudinal direction, and the direction in which the straight grooves 214b are arranged is also the longitudinal direction. Accordingly, the internal stress of the core plate 21 at the deeper straight grooves is smaller than the internal stress at the shallower straight grooves, so that the deformation at both end sides of the core plate 21 can be reduced and the curvature control of the upper surface of the core plate 21 can be reduced. As shown in fig. 18, in this example, the grooves are straight grooves 214b, the depth of the straight grooves 214b varies from deep to shallow to deep, and in this example, the wood fiber direction of the core 21 is transverse, and the direction in which the straight grooves 214b are provided is also transverse. As shown in fig. 19, in this example, the grooves are splayed grooves 212c, and the depth of the grooves 212c is arranged from deep to shallow to deep.

In the third embodiment, as shown in fig. 25 to 27, the core 21 is provided with the straight grooves 214b, the depth of the straight grooves 214b is changed from deep to shallow to deep, the wood fiber direction of the core 21 is transverse, the direction in which the straight grooves 214b are provided is also transverse, and the balance board 23 is a wood board, the wood fiber direction of which is longitudinal.

In one embodiment of the present invention, the trenches are arranged in a shallow to deep to shallow manner. The groove can be a straight groove or an inclined groove, and when the groove is shallow to deep and then to shallow, the deformation stress of the part with the shallow depth of the groove is larger than that of the part with the deep depth of the groove, so that the two ends of the core plate can generate larger radian, and the adjustment and control of the bending direction of the core plate can be obtained. If the groove is arranged on the outer convex surface of the core plate, the cosmetic material can be suitable for the decoration requirements of certain camber or flattening, such as the cosmetic fitting of floors, special-shaped wall surfaces and cylinders. If the groove is arranged on the inner concave surface of the core plate, the groove can be suitable for decoration requirements with a certain inner concave radian, such as cosmetic fitting of a wall surface with a concave corner. In another embodiment, the core 21 is provided with straight grooves 214c, the straight grooves 214c are arranged from dense to dense, and then from dense to dense, as shown in fig. 28 to 30, the part of the surface of the core 21 with the farther distance between the grooves tends to be flat, the part of the surface with the nearer distance between the grooves has a certain concave radian, the core 21 is attached with a balance plate 23 and then combined to form a composite plate 20, the composite plate 20 presents deformation bending approaching to 90 degrees of curved surface, the composite plate 20 has concave curved surfaces, and the composite plate 20 is suitable for being attached at the corner of the concave surface of the wall surface, and can achieve the effects of excessive arc of the corner of the concave surface of the wall surface, convenient pavement and construction by utilizing the straight shape of the concave and two end sides of the composite plate 20 to be paved on the wall surface.

In a specific embodiment of the present invention, the grooves are arranged from dense to dense, and vice versa, and may be straight grooves or inclined grooves. The distribution of stress in the core plate is regulated by the density of the grooves, so that the required control of the radian shape of the plate surface is obtained. The grooves are arranged from the dense to the dense mode, so that the surface of the core plate has a larger bending radian.

The stress of the part of the core plate corresponding to the thinner groove is larger than that of the part corresponding to the thicker groove, so that the grooves can be distributed at intervals in a sparse and dense way, and when the plate is transited into a larger bending arc, the grooves are provided with spaces for absorbing single-sided bending and turning by deformation of the plate, so that the bending radian of the core plate is controlled and adjusted.

In one embodiment of the present invention, the grooves are arranged in a dense-to-sparse-to-dense manner. This allows the surface of the core to have a smaller curvature.

In one embodiment of the present invention, the grooves are arranged in mirror image about the central portion of the core 21. As shown in fig. 13, the grooves are inclined grooves 212b, the inclined grooves 212b are mirror-image arranged about the central portion of the core 21, and the sum of the inclination angle A1 of the inclined groove 212b on one end side and the inclination angle A2 of the inclined groove 212b on the other end side is 180 degrees, wherein the inclination angles A1 and A2 are the angles between the inclined grooves 212b in the clockwise direction with respect to the upper surface of the core 21 as a reference plane. The end portions of the inclined grooves 212b located in the core 21 are disposed close to each other. As shown in fig. 14 and 17, there is shown another way of mirror-image arrangement of the inclined grooves 212b, the ends of the inclined grooves 212b located in the core 21 being disposed away from each other. The inclined grooves arranged in a mirror image mode have opposite deformation stress directions of the core plates, can offset each other, and can inhibit or adjust the regular bending deformation radian of the core plates. As shown in fig. 11 and 12, the grooves on the core 21 include inclined grooves 212b and straight grooves 214a, the straight grooves 214a being provided in the middle, the inclined grooves 212b being provided on both end sides of the straight grooves 214a and being mirror-image-arranged about the straight grooves 214 a. The degree of soft bending of the surface of the core plate 21 can be increased by reducing the stress in the middle of the core plate 21 by the straight grooves 214a provided in the middle.

The inclined grooves arranged in a mirror image manner can adjust the tile shape of the plate surface, and can adjust the concave-convex state, the bending degree and the flatness of the plate surface. Further, according to different thicknesses of the core plate, the flexibility balance degree, the bending direction and the bending degree of the surface of the core plate can be well controlled by combining with the adjustment of the sawing depth of the grooves.

The grooves formed in the core plate can be independently arranged at different angles, can be combined and arranged at different angles, can be arranged at equal intervals with different saw groove depths, can be arranged at non-equidistant intervals (namely at different density degrees) with different saw groove depths, and can be arranged at different angles, different saw groove depths and different density degrees. The arrangement and combination of the core plates aims at adjusting the stress and the bending degree of the core plates, and the artificial control and adjustment of the concave-convex state and the bending degree of the core plates can be realized by reasonably adjusting the stress of the core plates and matching the balance plates with different thicknesses. The core 21 processed by the wood itself because of different growth parts of xylem, edge materials, core materials, wood fibers grown irregularly, knots, material drawing parts and the like has certain deformation internal stress, especially the plate formed by rotary cutting, the log is mechanically clamped and clamped by rotary cutting equipment and drives the log to rotate, the cutter regularly advances towards the log direction to form a thick core veneer, and the tightness, density, expansion and contraction of the two boards have certain rules, so that the rotary cutting veneer can have regular warping. The invention utilizes the matching of different depths, different angles and different density of the grooves and the physical stress of the wood to realize the control of the bending direction of the board, and the matching of pasting the balance board, the mutual balance of the deformation stress of the balance board and the deformation stress of the core board, so that the flatness or the bending shape of the board surface of the composite board can be manually adjusted and controlled.

In one embodiment of the present invention, as shown in fig. 32 and 33, the composite board 20 further includes a connecting bead 27 mounted on the end face of the core 21. The connecting strakes 27 are arranged on the end face of the core plate 21 and are used for splicing the composite boards, and the connecting strakes 27 of the two composite boards are provided with structures for splicing, so that the splicing combination among the composite boards can be realized.

In the fourth embodiment, as shown in fig. 32 and 33, the core 21 has two long sides and two short sides, and the connecting bead 27 is provided on the end faces of the two long sides, in this embodiment, the mortise 215 is provided on the end face of the core 21, the connecting bead 27 is provided correspondingly with the tenon 271, and the connecting bead 27 is mounted on the core 21 by a splice combination of the tenon 271 and the corresponding mortise 215.

In the fifth embodiment, as shown in fig. 34, tenons 216 are provided on the end surfaces of the core plates 21, corresponding mortise grooves 273 are provided on the joint side bars 27, and the joint side bars 27 are mounted on the core plates 21 by splice-combining the tenons 216 and the corresponding mortise grooves 273. As shown in fig. 35, in the sixth embodiment, the structure of the connecting bead 27 is the same as that of the fifth embodiment except that the grooves provided on the core 21 are straight grooves 214a, whereas the grooves in the fifth embodiment are inclined grooves 212a.

As shown in fig. 36 to 38, another connection mode of the connection beads 27 with the core plate 21 is shown, in this embodiment, tenons 216 and mortises 215 are provided on the end faces of the core plate 21, mortises 273 and tenons 271 are correspondingly provided on the connection beads 27, and the connection beads 27 are mounted on the core plate 21 by splicing and combining the tenons 216 and the corresponding mortises 273 and the mortises 215 and the corresponding tenons 271.

In one embodiment of the present invention, as shown in fig. 39, the balance plate 23 is provided with grooves on the surface thereof which is in contact with the core plate 21.

In the seventh embodiment, as shown in fig. 39 and 40, a plurality of grooves formed in the balance plate 23 are longitudinal grooves 231, and the longitudinal grooves 231 are spaced apart from each other on the balance plate 23. In the present embodiment, the upper surface of the core 21 is provided with the straight grooves 214b, and the depths of the straight grooves 214b are arranged in a deep-to-shallow-to-deep manner.

In the eighth embodiment, as shown in fig. 41 and 43, the grooves formed in the balance plate 23 are lateral grooves 233, and the lateral grooves 233 are spaced apart on the balance plate 23. As shown in connection with fig. 42 and 44, the lateral groove 233 has a V-shape. In another preferred embodiment, as shown in fig. 45, the lateral groove 233 is U-shaped. In yet another preferred embodiment, as shown in fig. 46, the lateral recess 233 is rectangular in shape.

In the ninth embodiment, as shown in fig. 47, the grooves formed in the balance plate 23 include a transverse groove 233 and a longitudinal groove 231, which are disposed at intervals.

As shown in fig. 48, the grooves formed on the balance plate 23 are oblique grooves 235, the oblique grooves 235 are arranged at intervals along the transverse direction and the longitudinal direction of the balance plate 23, and the oblique grooves 235 are arranged in a splayed manner.

In one embodiment of the present invention, as shown in fig. 49, the composite board 20 further includes a mesh cloth 25 having a size adapted to the core 21, and the mesh cloth 25 is attached to the opposite surface of the core 21 to which the balance plate 23 is attached, that is, the balance plate 23 and the mesh cloth 25 are attached to the upper and lower surfaces of the core 21.

In another embodiment, the composite board 20 further includes a mesh 25 sized to fit the core 21, the mesh 25 being sandwiched between the balance plate 23 and the core 21.

The mesh cloth 25 has better alkali resistance, softness and warp-weft high-strength tensile force resistance, the composite board adhered with the mesh cloth has larger static bending strength and stabilizes the tensile force of a balanced board surface, the core board 21 is effectively pulled to avoid the cracking of the core board caused by deeper grooves, the shrinkage or expansion deformation of the board in the extremely severe environment of the core board 21 is reduced, and the long-term leveling or bending shaping stable use of the board can be better ensured.

Preferably, the mesh 25 may be made of plant fiber, glass fiber or EPS.

In the tenth embodiment, as shown in fig. 49, a mesh cloth 25 is attached to the lower surface of a core 21, a balance plate 23 is attached to the upper surface of the core 21, and the upper surface of the core 21 is provided with grooves, which are straight grooves 214b.

In the eleventh embodiment, as shown in fig. 50, the mesh cloth 25 is attached to the lower surface of the core 21, the grooves provided on the core 21 are inclined grooves 212b, and the inclined grooves 212b are mirror-image with the central portion as the axis.

In the twelfth embodiment, as shown in fig. 51, a mesh cloth 25 is attached to the upper surface of the core plate 21, and the mesh cloth 25 is sandwiched between the balance plate 23 and the core plate 21.

Referring to fig. 52 and 53, there are shown two other embodiments of the composite board 20 in which the mesh cloth 25 is sandwiched between the balance plate 23 and the core plate 21, and at this time, the mesh cloth 25 is attached to the lower surface of the core plate 21, and the upper surface of the core plate 21 is attached with a face plate 24. In the example shown in fig. 52, the lower surface of the core plate 21 is provided with straight grooves 214a, and in the example shown in fig. 53, the lower surface of the core plate 21 is provided with inclined grooves 212a.

The invention also provides a composite board with the concave-convex and bending-adjustable board surface, and the structure of the composite board is described below.

As shown in fig. 54 and 55, the composite board 30 includes a core board 31, a balance board 33 and a face board 35, wherein a surface of the core board 31 is provided with a plurality of grooves in the same direction as the wood fibers, and the concave-convex state of the core board 31 is adjusted by the plurality of grooves. The balance plate 33 is attached to the surface of the core plate 31 with grooves, and the wood fiber direction of the balance plate 33 is perpendicular to the wood fiber direction of the core plate 31. The face plate 35 is attached to the opposite surface of the core plate 31 to which the balance plate 33 is attached, and the wood fiber direction of the face plate 35 is perpendicular to the wood fiber direction of the core plate 31. That is, the face plate 35 and the balance plate 33 are disposed on the upper and lower surfaces of the core plate 31, and the surface of the core plate 31, which is attached to the balance plate 33, is provided with grooves, and the face plate 35 is exposed when the composite board 30 is in use, and can be used as a decorative surface.

The composite board 30 of the present invention employs a three-layer structure board in which the face plate 35 functions as a veneer, and a noble solid wood board is selected to enhance the visual effect of the composite board 30.

In the example shown in fig. 54 and 55, the core plate 31 has an upper surface 311 and a lower surface 313, the grooves are provided on the lower surface 313, the balance plate 33 is attached to the lower surface 313 of the core plate 31, and the face plate 35 is attached to the upper surface 311 of the core plate 31.

As shown in fig. 54 and 55, the core plate 31 is a rotary-cut single plate, the rotary-cut single plate has an inner concave surface and an outer convex surface, grooves are sawed on the inner concave surface of the core plate 31, the core plate 31 can be adjusted to have a larger bending degree, the panel 35 is attached to the outer convex surface of the core plate 31, the combined composite board 30 has a larger arch radian, the effect can be shown in fig. 31, the composite board 30 can be used as a cosmetic attachment of a cylinder, and the panel 35 can be a noble veneer. The composite board 30 can also be used as a decoration of a corner bend (external corner) of a wall surface protruding outwards.

Grooves are sawed on the outer convex surface of the core plate 31, the core plate 31 can be adjusted to be flat, the face plate 35 is attached to the inner concave surface of the core plate, the surface of the combined composite board 30 is flat, and the combined composite board is applicable to cosmetic attachment of floors and walls.

In yet another embodiment, as shown in fig. 56 and 57, a panel 35 is attached to the upper surface 311 of the core plate 31, a balance plate 33 is attached to the lower surface 313 of the core plate 31, the grooves formed on the lower surface of the core plate 31 include inclined grooves 312b and straight grooves 314a, the straight grooves 314a are disposed together and are located in the middle of the core plate 31, and the inclined grooves 312b are disposed in mirror image arrangement about the straight grooves 314 a.

In another preferred embodiment, the core 31 is a solid wood board.

Preferably, the angles, the depths and the densities of the grooves are correspondingly arranged and combined, and accordingly, the concave-convex and bending states of the plate surface are adjusted. In one embodiment, the grooves are arranged in a depth-to-depth manner. In another embodiment, the trenches are arranged in a shallow to deep to shallow manner. In one embodiment, the grooves are arranged in a row from dense to dense. In another embodiment, the grooves are arranged from dense to sparse to dense. In one embodiment, the grooves are arranged in mirror image about the central axis. The included angle formed between the grooves formed on the surface of the core plate 31 and the surface of the core plate 31 is more than or equal to 30 degrees and less than or equal to 150 degrees. The grooves of the present invention may be inclined grooves, straight grooves, or both.

In the thirteenth embodiment, as shown in fig. 54 and 55, the grooves on the core plate 31 are inclined grooves 312a, and the inclined grooves 312a are arranged in a splayed manner. The splayed shape can be a positive splayed shape or an inverted splayed shape. The example shown in fig. 54 is an inverted-eight shape. Preferably, the splayed inclined grooves 312a are arranged at equal intervals.

In the fourteenth embodiment, as shown in fig. 58, the composite board 30 further includes connecting strips 37 mounted on both end sides of the core board 31.

In the fifteenth embodiment, as shown in fig. 59, the grooves provided on the core plate 31 are straight grooves 314a, and the straight grooves 314a are provided at equidistant intervals.

In the sixteenth embodiment, as shown in fig. 60, the grooves provided on the core plate 31 are straight grooves 314b, and the depth of the straight grooves 314b is arranged in a manner from deep to shallow to deep.

In the seventeenth embodiment, as shown in fig. 61 and 62, the balance plate 33 is provided with grooves on the surface thereof which is in contact with the core plate 31, the grooves including longitudinal grooves 331 and transverse grooves 333, and being provided at equal intervals. In another embodiment, the balance plate is provided with grooves on the opposite surface to the core plate. Preferably, the balance board 33 is a wood board, and the wood fiber direction thereof is perpendicular to the wood fiber direction of the core board. The wood fiber direction of the balance plate 33 is perpendicular to the wood fiber direction of the core plate 31, wood fibers are mutually restrained and balanced, and the balance plate 33 applies balance force to the surface provided with the groove below the core plate 31, so that the bending stress of the core plate is limited, and the structural stability of the core plate 31 is improved.

In another preferred embodiment, the face plate 35 and the balance plate 33 can be made of metal, inorganic nonmetallic or polymer materials. Specifically, the raw materials of the balance plate can be wood, stone, paper, bamboo and high polymer materials, stone powder and thermoplastic high polymer mixed materials (SPC), wood powder, rice husk, straw, bamboo and other plant fibers are mixed into new wood materials (WPC), melamine materials and the like.

The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.

Claims

1. A composite board with concave-convex and bending adjustable board surface, which is characterized by comprising:

a plurality of grooves which are consistent with the wood fiber direction of the core plate are formed in one surface of the core plate, and the concave-convex state of the core plate is adjusted through the grooves; and

the balance plate is adhered to the surface of the core plate provided with the groove;

the grooves are straight grooves, inclined grooves or the combination of the straight grooves and the inclined grooves;

The grooves are arranged in a deep-to-shallow-to-deep mode, or the grooves are arranged in a shallow-to-deep-to-shallow mode, or the grooves are arranged in a dense-to-dense mode, and the concave-convex state of the plate surface is adjusted by the grooves, so that the bending degree of the core plate is effectively controlled.

2. The adjustable surface relief, curved composite board according to claim 1, wherein said grooves form an angle with said core surface in the range of 30 degrees or greater and 150 degrees or less.

3. The adjustable panel-face concavo-convex, curved composite board according to claim 1, wherein the grooves are arranged in a splayed pattern.

4. The adjustable panel-face relief and curvature composite panel of claim 1, wherein the grooves are arranged in mirror image about the central portion of the core.

5. The adjustable panel surface relief and curvature composite panel of claim 1, wherein the core panel is a rotary cut veneer; or the core board is a solid wood board.

6. The adjustable surface relief, curved composite board according to claim 1, wherein said balance board is a rotary cut veneer or solid wood board with wood fiber direction perpendicular to said core board.

7. The adjustable bump and curved composite board according to claim 6, wherein the surface of the balance board, which is attached to the core board, is provided with grooves.

8. The adjustable bump, curved composite board according to claim 1, wherein the balance board is made of metal material, inorganic nonmetallic material or polymer material.

9. The adjustable panel-face concavo-convex, curved composite board according to claim 1, further comprising a scrim that is sized to fit the size of the core, the scrim being affixed to the opposite surface of the core to which the balance plate is affixed.

10. The adjustable panel-face concavo-convex, curved composite board according to claim 1, further comprising a scrim that is sized to fit the core panel, the scrim being sandwiched between the core panel and the balance panel.

11. The adjustable panel-face concavo-convex, curved composite board according to claim 1, further comprising connecting strips mounted on the end faces of the core.

12. The adjustable surface relief, curved composite board according to claim 11, wherein the connecting edges on the end faces of the core are made of wood, bamboo, wood plastic, polymeric or non-metallic material.

13. A composite board with concave-convex and bending adjustable board surface, which is characterized by comprising:

a panel attached to the opposite surface of the core plate and provided with the balance plate;

14. The adjustable surface relief, curved composite board according to claim 13, wherein said grooves form an angle with said surface of said core in the range of 30 degrees or greater and 150 degrees or less.

15. The adjustable panel-face bump and bend composite panel according to claim 13 wherein the grooves are arranged in a splayed arrangement.

16. The adjustable panel-face relief and curvature composite panel of claim 13, wherein the grooves are arranged in mirror image about the central portion of the core.

17. The adjustable panel surface relief and curvature composite panel of claim 13, wherein the core panel is a rotary cut veneer; or the core board is a solid wood board.

18. The adjustable surface relief, curved composite board according to claim 13, wherein said balance board is a rotary cut veneer or solid wood board with wood fiber direction perpendicular to said core board.

19. The adjustable surface relief and curvature composite board as claimed in claim 18, wherein said balance plate has grooves formed on the surface thereof which is bonded to said core plate; or the opposite surfaces of the balance plate and the core plate are provided with grooves.

20. The adjustable bump, curved composite board according to claim 13, wherein the balance board is made of metal material, inorganic nonmetallic material or polymer material.

21. The adjustable face relief, curved composite board material according to claim 13, further comprising connecting strips mounted on an end face of said core.

22. The adjustable bump and curved composite board according to claim 21, wherein the connecting strips on the end surface of the core board are made of wood, bamboo, wood plastic, polymer material or nonmetallic material.