CN114147819A

CN114147819A - Aldehyde-free plywood with pressure-resistant and environment-friendly functions and preparation method thereof

Info

Publication number: CN114147819A
Application number: CN202111483714.9A
Authority: CN
Inventors: 李泽云
Original assignee: Hunan Hongsen New Material Technology Co ltd
Current assignee: Hunan Hongsen New Material Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-03-08
Anticipated expiration: 2041-12-07
Also published as: CN114147819B

Abstract

The invention relates to the technical field of plywood manufacturing, and discloses an aldehyde-free plywood with pressure-resistant and environment-friendly functions, which comprises a base plate, a panel and a bottom plate, wherein the panel, the base plate and the bottom plate are sequentially distributed from top to bottom; adopt the mode that mechanical structure connects, be in the same place each component firm connection of plywood to can make each component in the plywood of making do not use the viscose also can be firm link together, owing to do not adopt the viscose at the in-process of preparation, the plywood of consequently making is more natural, does not contain aldehyde substance, can not appear in the aldehyde substance volatilizees the air, is inhaled by the human body, thereby influences the healthy condition of people.

Description

Aldehyde-free plywood with pressure-resistant and environment-friendly functions and preparation method thereof

Technical Field

The invention relates to the technical field of plywood manufacturing, in particular to an aldehyde-free plywood with pressure resistance and environmental protection functions and a preparation method thereof.

Background

The plywood is a three-layer or multi-layer plate material formed by rotationally cutting wood sections into veneers or slicing battens into thin wood and gluing the veneers by using an adhesive, the veneer is usually formed by using odd layers of veneers and enabling the fiber directions of the veneers of the adjacent layers to be vertical to each other.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an aldehyde-free plywood with pressure resistance and environmental protection functions and a preparation method thereof, and solves the problems in the background art.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an aldehyde-free plywood with pressure-resistant and environment-friendly functions comprises a base plate, a panel and a bottom plate, wherein the panel, the base plate and the bottom plate are sequentially distributed from top to bottom, four corners of the upper surface and the lower surface of the base plate are respectively provided with a first slot, four corners of the upper surface and the lower surface of the base plate are respectively provided with a second slot at the inner side of the first slot, a clamping plate penetrates through the first slot and the second slot, one end of the clamping plate positioned in the second slot is of an inclined plane structure, four corners of the lower surface of the panel and four corners of the upper surface of the bottom plate are respectively fixed with a first insert block, the opposite sides of the first insert blocks are respectively provided with a clamping groove, four corners of the lower surface of the panel and four corners of the upper surface of the bottom plate are respectively fixed with a second insert block at the inner side of the first insert block, and the first insert blocks are in one-to-one correspondence with the first slots, the plurality of second inserting blocks correspond to the plurality of second inserting grooves one by one, a bearing plate is arranged at the bottom of the bottom plate, the bearing plate is of a U-shaped structure, the lower surface of the bottom plate is provided with a front-back penetrating T-shaped groove, the bearing plate is internally provided with a T-shaped block, the bottom of the T-shaped block is fixed with a plurality of springs at equal intervals from front to back, the bottom ends of the plurality of springs are all fixedly connected with the inner bottom of the bearing plate, a plurality of vertical rods are fixed on both sides of the bottom plate at equal intervals from front to back, a plurality of circular grooves are arranged on both sides of the top of the bearing plate at equal intervals from front to back, the circular grooves correspond to the vertical rods one by one, a plurality of through holes are arranged in the floating bodies, buffer oil is filled between the floating body and the circular groove, and the floating body floats on the top surface of the buffer oil.

Preferably, rubber pads are fixed on the opposite sides of the panel and the bottom plate, and the rubber pads are of a honeycomb structure.

Preferably, the first slot and the second slot are similar to a rectangular structure, and the size of the first slot is larger than that of the second slot.

Preferably, one side surface of the first insertion block facing to the outside is flush with the inner side surface of the first insertion groove facing to the outside, and one side surface of the second insertion block facing to the inside is flush with the inner side surface of the second insertion groove facing to the inside.

Preferably, the top of panel is equipped with the decorative board, just the third slot has all been seted up to four corners of the upper surface of panel, the medial surface of third slot outside facing is seted up flutedly, the inside of recess is fixed with the spring, the spring is fixed with the iron plate towards inboard one end, the inside at four turnings of decorative board all is fixed with the third inserted block, the third inserted block is open-top's hollow structure, just the bayonet socket has been seted up to the side of third inserted block outside facing, the top dismantlement of third inserted block is connected with the closing cap, the bottom of closing cap is fixed with the magnetic path.

Preferably, the upper surface of the cover is flush with the upper surface of the decorative plate, and the color of the cover is the same as that of the decorative plate.

Preferably, the top of the decorative sheet is coated with an oleophobic, hydrophobic layer.

A preparation method of aldehyde-free plywood with pressure-resistant and environment-friendly functions comprises the following steps:

s1, manufacturing a substrate: selecting a board for manufacturing a substrate, cutting the board into required sizes by adopting cutting equipment, then respectively forming rectangular first slots at four corners of the upper surface and the lower surface of the cut board, forming second slots at the positions, located at the inner sides of the first slots, of the four corners of the upper surface and the lower surface of the board, then forming holes at the positions, corresponding to the first slots, of two sides of the board until the first slots are communicated with the second slots, then cutting and manufacturing a clamping board matched with the sizes of the holes, cutting the outward end of the clamping board into an inclined plane, then inserting one end of the inclined plane of the clamping board into the holes till the clamping board is completely located between the first slots and the second slots, and then plugging the holes by utilizing wood blocks matched with the sizes of the holes to finish the manufacturing of the substrate;

s2, manufacturing a panel and a bottom plate: cutting a plate into a plate shape with the same size as a substrate, fixing a first insert block at four corners of two opposite sides of the plate in a tenon-and-mortise mode, arranging a first clamping groove at the inner side of the first insert block, fixing a second insert block at the inner side of the first insert block at the four corners of the two opposite sides of the plate in a tenon-and-mortise mode, arranging third slots at the four corners of the upper surface of the plate, forming holes at the positions, corresponding to the third slots, of the two sides of the upper plate, selecting a small wood block with the size matched with the holes, fixing a spring at one side of the small wood block, fixing an iron block at the other end of the spring, inserting one end of the small wood block with the spring as the inner side into the holes, plugging the holes, selecting two rubber pads with a honeycomb structure inside, and arranging through holes at the positions, corresponding to the first insert block and the second insert block, of the rubber pads, then respectively attaching rubber pads to the opposite sides of the upper plate and the lower plate, fixing the rubber pads on the upper plate and the lower plate in a hot melting mode, then forming a T-shaped groove in the lower plate from front to back, and fixing a plurality of vertical rods on the two sides of the bottom of the lower plate at equal intervals from front to back to complete the manufacture of the panel and the bottom plate;

s3, manufacturing a decorative plate: cutting a plate into a plate shape with the same size as a panel, then forming holes at four corners of the plate, then manufacturing four small blocks matched with the tenon-and-mortise of the holes, taking the top surfaces of the four small blocks as starting surfaces, hollowing the interiors of the small blocks, forming bayonets at one sides of the small blocks, then manufacturing sealing covers matched with the top openings of the four small blocks, inserting and fixing magnetic blocks at the bottoms of the sealing covers, then inserting the sealing covers into the interiors of the small blocks to form third inserting blocks, then inserting the third inserting blocks into the holes in a tenon-and-mortise mode, enabling the tops of the sealing covers to be flush with the tops of the plate, then coating an oleophobic hydrophobic layer on the top surface of the plate, and finishing the manufacturing of a decorative plate;

s4, manufacturing a bearing plate: cutting a plate into a plate with the same size as the substrate, polishing the plate from front to back by using a cutting and polishing device to form a U-shaped structure on the plate, drilling a plurality of circular grooves on two sides of the top of the plate with the U-shaped structure from front to back at equal intervals by using vertical cylinder drilling equipment, injecting buffer oil into the circular grooves, putting a floating body which is made of foam and is provided with a plurality of through holes into the circular grooves, and fixing a sealing ring on the top of the inner wall of the circular groove;

s5, assembling: respectively arranging a panel and a bottom plate at the top and the bottom of a substrate, respectively inserting four first insertion blocks and four second insertion blocks on the panel into four first slots and four second slots at the top of the substrate, wherein at the moment, under the action of the second insertion blocks, a clamping plate gradually moves towards the inside of the first slots and is finally clamped into clamping grooves on the first insertion blocks to complete the fixed connection between the substrate and the panel, the fixed connection between the bottom plate and the substrate is the same, then arranging a decorative plate at the top of the panel, inserting four third insertion blocks on the decorative plate into four third slots on the panel, at the moment, under the action of a magnetic block inside the third insertion blocks, iron blocks in the third slots can be attracted and are finally clamped into clamping grooves to complete the fixed connection between the decorative plate and the panel, then inserting a T-shaped block into a T-shaped groove from front to back, at the moment, a plurality of vertical rods can be respectively inserted into a plurality of circular grooves, the combination of the bottom plate and the bearing plate is completed, and the combined installation of the whole plate body is completed at the moment;

s6, damage, disassembly and replacement of the decorative plate: when the decorative plate is damaged to influence the attractiveness or the use, a user can insert the drill into the sealing cover by using an electric drill, then the sealing cover and the magnetic block can be pulled out from the third inserting block by exerting force outwards, the block is not influenced by the magnetic force of the magnetic block, the iron block and the bayonet are separated from each other under the action of the spring, then the damaged decorative plate is taken down from the panel, and then the operation of replacing the new decorative plate is the same as the operation of installing the decorative plate in the step S4.

(III) advantageous effects

The invention provides an aldehyde-free plywood with pressure resistance and environmental protection functions and a preparation method thereof, and the aldehyde-free plywood has the following beneficial effects:

when the plywood is manufactured, all components of the plywood are firmly connected together in a mechanical structure connection mode, so that all the components in the manufactured plywood can be firmly connected together without using viscose; in addition, honeycomb rubber pads are arranged between the base plate and the panel and between the base plate and the panel, so that the pressure resistance of the plywood is better in the transportation and use processes, and the condition that the plates are easy to break and damage is reduced; and, this plywood is at the in-process that uses, receives to damage when influencing pleasing to the eye or use when the decorative board, can the person of facilitating the use only change the decorative board, and need not change whole panel, avoids appearing the wasting of resources's the condition to make this plywood environmental protection more.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a substrate according to the present invention;

FIG. 3 is a schematic sectional view of the assembled panel and decorative panel of the present invention;

FIG. 4 is a schematic cross-sectional view of the carrier plate of the present invention.

In the figure: 1. a base plate; 2. a card slot; 3. a substrate; 4. a first insert block; 5. a panel; 6. a decorative plate; 7. an oleophobic hydrophobic layer; 8. a bayonet; 9. a third slot; 10. a first slot; 11. a third insert block; 12. a second slot; 13. a second insert block; 14. clamping a plate; 15. an iron block; 16. sealing the cover; 17. a magnetic block; 18. a groove; 19. a spring; 20. a rubber pad; 21. a carrier plate; 22. a circular groove; 23. a vertical rod; 24. a T-shaped block; 25. a spring; 26. a T-shaped groove; 27. a seal ring; 28. a float; 29. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the present invention provides a technical solution: an aldehyde-free plywood with pressure-resistant and environment-friendly functions comprises a base plate 3, a panel 5 and a bottom plate 1, wherein the panel 5, the base plate 3 and the bottom plate 1 are sequentially distributed from top to bottom, rubber pads 20 are fixed on opposite sides of the panel 5 and the bottom plate 1, the rubber pads 20 are of a honeycomb structure, first slots 10 are formed in four corners of the upper surface and the lower surface of the base plate 3, second slots 12 are formed in four corners of the upper surface and the lower surface of the base plate 3, which are positioned on the inner sides of the first slots 10, the first slots 10 and the second slots 12 are of similar rectangular structures, the size of the first slots 10 is larger than that of the second slots 12, a clamping plate 14 penetrates through the first slots 10 and the second slots 12, one end, positioned on the second slots 12, of the clamping plate 14 is of an inclined plane structure, first inserting blocks 4 are fixed on four corners of the lower surface of the panel 5 and four corners of the upper surface of the bottom plate 1, clamping grooves 2 are formed in opposite sides of the first inserting blocks 4, the four corners of the lower surface of the panel 5 and the four corners of the upper surface of the bottom plate 1 are respectively fixed with a second insert 13 at the inner side of the first insert 4, the first inserts 4 are respectively corresponding to the first slots 10, the second inserts 13 are respectively corresponding to the second slots 12, the bottom of the bottom plate 1 is provided with a bearing plate 21, the bearing plate 21 is of a U-shaped structure, the lower surface of the bottom plate 1 is provided with a front-back penetrating T-shaped groove 26, the inside of the bearing plate 21 is provided with a T-shaped block 24, the bottom of the T-shaped block 24 is equidistantly fixed with a plurality of springs 25 from front to back, the bottom ends of the springs 25 are respectively fixedly connected with the inner bottom of the bearing plate 21, the two sides of the bottom plate 1 are respectively equidistantly fixed with a plurality of vertical rods 23 from front to back, the two sides of the top of the bearing plate 21 are respectively provided with a plurality of circular grooves 22 from front to back, the circular grooves 22 are respectively corresponding to the vertical rods 23, and the circular grooves 22 are respectively provided with a plurality of floating bodies 28, a plurality of through holes 29 are formed in the floating body 28, buffer oil is filled between the floating body 28 and the circular groove 22, the floating body 28 floats on the top surface of the buffer oil, when the whole plate body bears small pressure, the borne small pressure can be counteracted through the elastic force of the plurality of springs 25 at the moment, so that the pressure-resistant effect is achieved, when the borne pressure is large, the springs 28 are compressed, the vertical rods 23 move downwards and are in contact with the floating body 28, the floating body 28 is pressed into the buffer oil, the buffer oil passes through the plurality of through holes 29 on the floating body 28, the damping force is generated, so that the elastic force generated by the compression of the springs 25 can be matched, the borne large pressure is counteracted, the pressure resistance of the whole plate body can be better, and after the pressure is cancelled, the damping force generated by the movement of the floating body 28 in the buffer oil can be avoided, the springs 25 are avoided, one lateral surface of the first insertion block 4 facing to the outside is flush with the inner lateral surface of the first insertion groove 10 facing to the outside, one lateral surface of the second insertion block 13 facing to the inside is flush with the inner lateral surface of the second insertion groove 12 facing to the inside, the top of the panel 5 is provided with a decorative plate 6, the top of the decorative plate 6 is coated with an oleophobic hydrophobic layer 7, four corners of the upper surface of the panel 5 are respectively provided with a third insertion groove 9, the inner lateral surface of the third insertion groove 9 facing to the outside is provided with a groove 19, a spring 19 is fixed inside the groove 19, one end of the spring 19 facing to the inside is fixed with an iron block 15, the insides of four corners of the decorative plate 6 are respectively fixed with a third insertion block 11, the third insertion block 11 is of a hollow structure with an opening at the top, one lateral surface of the third insertion block 11 facing to the outside is provided with a bayonet 8, the top of the third insertion block 11 is detachably connected with a sealing cover 16, the bottom of the sealing cover 16 is fixed with a magnetic block 17, the upper surface of the sealing cover 16 is flush with the upper surface of the decorative plate 6, and the cover 16 is the same colour as the decorative panel 6.

s1, manufacturing substrate 3: selecting a board for manufacturing a substrate, cutting the board into required sizes by adopting cutting equipment, then forming rectangular first slots 10 at four corners of the upper surface and the lower surface of the cut board, forming second slots 12 at the four corners of the upper surface and the lower surface of the board, which are positioned at the inner sides of the first slots 10, then forming holes at the two sides of the board corresponding to the first slots 10 until the first slots 10 are communicated with the second slots 12, then cutting and manufacturing a clamping board 14 matched with the sizes of the holes, cutting the outward end of the clamping board 14 into an inclined plane, then inserting one end of the inclined plane of the clamping board 14 into the hole until the clamping board is completely positioned between the first slots 10 and the second slots 12, and then plugging the hole by utilizing a wood block matched with the sizes of the holes to complete the manufacturing of the substrate 3;

s2, making the panel 5 and the bottom plate 1: cutting a plate into a plate shape with the same size as a substrate, fixing a first inserting block 4 at four corners of two opposite sides of the plate in a mortise-tenon manner, arranging a first clamping groove 2 at the inner side of the first inserting block 4, fixing a second inserting block 13 at the inner side of the first inserting block 4 at the four corners of the two opposite sides of the plate in the mortise-tenon manner, arranging third inserting grooves 9 at the four corners of the upper surface of the plate, forming holes at the positions, corresponding to the third inserting grooves 9, of the two sides of the upper plate, selecting a small wood block with the size matched with the holes, fixing a spring 19 at one side of the small wood block, fixing an iron block at the other end of the spring, inserting one end of the small wood block with the spring 19 as the inner side into the hole, plugging the hole, selecting two rubber pads 20 with a honeycomb structure inside, and arranging through holes at the positions, corresponding to the first inserting block 4 and the second inserting block 13, of the rubber pads 20, then respectively attaching rubber pads to the opposite sides of the upper plate and the lower plate, fixing the rubber pads on the upper plate and the lower plate in a hot melting mode, then forming a T-shaped groove 26 in the lower plate from front to back, and fixing a plurality of vertical rods 23 on the two sides of the bottom of the lower plate at equal intervals from front to back to finish the manufacture of the panel 5 and the bottom plate 1;

s3, manufacturing the decorative plate 6: cutting a plate into a plate shape with the same size as the panel 5, then forming holes at four corners of the plate, then manufacturing four small blocks matched with the holes in a tenon-and-mortise mode, taking the top surfaces of the four small blocks as starting surfaces, hollowing the interiors of the small blocks, forming bayonets 8 at one sides of the small blocks, then manufacturing sealing covers 16 matched with the top openings of the four small blocks, inserting fixed magnetic blocks 17 at the bottoms of the sealing covers 16, then inserting the sealing covers 16 into the interiors of the small blocks to form third inserting blocks 11, then inserting the third inserting blocks 11 into the holes in a tenon-and-mortise mode, enabling the tops of the sealing covers 16 to be flush with the tops of the plate, then coating the top surfaces of the plate with oleophobic hydrophobic layers 7, and finishing the manufacturing of the decorative plate 6;

s4, manufacturing the bearing plate 21: cutting a plate into a plate shape with the same size as the substrate 3, polishing the plate body from front to back by using a cutting and polishing device to form a U-shaped structure, drilling a plurality of circular grooves 22 at equal intervals from front to back on two sides of the top of the plate body with the U-shaped structure by using vertical cylinder drilling equipment, injecting buffer oil into the circular grooves 22, putting floating bodies 28 which are made of foam and provided with a plurality of through holes 29 into the circular grooves, and fixing a sealing ring 27 on the top of the inner wall of each circular groove;

s5, assembling: the panel 5 and the bottom plate 1 are respectively arranged at the top and the bottom of the substrate 3, then four first insertion blocks 4 and four second insertion blocks 13 on the panel 5 are respectively inserted into four first slots 10 and four second slots 12 at the top of the substrate 3, at this time, under the action of the second insertion blocks 13, the clamping plate 14 gradually moves towards the inside of the first slot 10 and is finally clamped into the clamping slots 2 on the first insertion blocks 4, the fixed connection between the substrate 3 and the panel 5 is completed, the fixed connection between the bottom plate 1 and the substrate 3 is the same, then the decorative plate 5 is arranged at the top of the panel 5, and four third insertion blocks 11 on the decorative plate 6 are inserted into four third slots 9 on the panel 5, at this time, due to the action of magnetic blocks inside the third insertion blocks 11, the iron blocks 15 in the third slots 9 are attracted and are finally clamped into the clamping slots 8, so as to complete the fixed connection between the decorative plate 6 and the panel 5, then inserting the T-shaped block 24 into the T-shaped groove 26 from front to back, and at the moment, respectively inserting the plurality of vertical rods 23 into the plurality of circular grooves 22 to complete the combination of the bottom plate 1 and the bearing plate 21, and at the moment, completing the combination and installation of the whole plate body;

s6, damage, disassembly and replacement of the decorative plate 6: when the decorative plate 6 is damaged to affect the appearance or the use, a user can insert a drill into the sealing cover 16 by using an electric drill, then the sealing cover 16 and the magnetic block 17 can be pulled out from the third inserting block 11 by forcing outwards, the block 15 is not influenced by the magnetic force of the magnetic block 17, the iron block 15 can be separated from the bayonet 8 under the action of the spring 19, then the damaged decorative plate 6 can be taken down from the panel 5, and then the operation of replacing the new decorative plate 6 is the same as the operation of installing the decorative plate 6 in the step S4.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a no aldehyde plywood with withstand voltage environmental protection function, includes base plate (3), panel (5) and bottom plate (1), its characterized in that: the panel (5), the base plate (3) and the bottom plate (1) are sequentially distributed from top to bottom, first slots (10) are formed in four corners of the upper surface and the lower surface of the base plate (3), second slots (12) are formed in the inner sides of the first slots (10) in the four corners of the upper surface and the lower surface of the base plate (3), clamping plates (14) penetrate through the first slots (10) and the second slots (12), one ends of the clamping plates (14) located in the second slots (12) are of inclined surface structures, first inserting blocks (4) are fixed to the four corners of the lower surface of the panel (5) and the four corners of the upper surface of the bottom plate (1), clamping grooves (2) are formed in the opposite sides of the first inserting blocks (4), and second inserting blocks (4) are fixed to the inner sides of the four corners of the lower surface of the panel (5) and the four corners of the upper surface of the bottom plate (1) located in the first inserting blocks (4) 13) A plurality of the first inserting blocks (4) are in one-to-one correspondence with the first inserting grooves (10), a plurality of the second inserting blocks (13) are in one-to-one correspondence with the second inserting grooves (12), a bearing plate (21) is arranged at the bottom of the bottom plate (1), the bearing plate (21) is of a U-shaped structure, a front-back penetrating T-shaped groove (26) is formed in the lower surface of the bottom plate (1), a T-shaped block (24) is arranged inside the bearing plate (21), a plurality of springs (25) are fixed to the bottom of the T-shaped block (24) in a front-to-back equidistant mode, the bottom ends of the springs (25) are fixedly connected with the inner bottom of the bearing plate (21), a plurality of vertical rods (23) are fixed to the two sides of the bottom plate (1) in a front-to-back equidistant mode, a plurality of circular grooves (22) are formed in the two sides of the top of the bearing plate (21) in a front-to-back equidistant mode, the circular grooves (22) are in one-to-one correspondence with the vertical rods (23), floating bodies (28) are arranged inside the circular grooves (22), a plurality of through holes (29) are formed in the floating bodies (28), buffer oil is filled between the floating bodies (28) and the circular grooves (22), and the floating bodies (28) float on the top surface of the buffer oil.

2. The aldehyde-free plywood with pressure resistance and environmental protection functions as claimed in claim 1, wherein: rubber pads (20) are fixed on the opposite sides of the panel (5) and the bottom plate (1), and the inner parts of the rubber pads (20) are of honeycomb structures.

3. The aldehyde-free plywood with pressure resistance and environmental protection functions as claimed in claim 1, wherein: the first slot (10) and the second slot (12) are similar to a rectangular structure, and the size of the first slot (10) is larger than that of the second slot (12).

4. The aldehyde-free plywood with pressure resistance and environmental protection functions as claimed in claim 1, wherein: the side of the first insertion block (4) facing the outside is flush with the inner side of the first slot (10) facing the outside, and the side of the second insertion block (13) facing the inside is flush with the inner side of the second slot (12) facing the inside.

5. The aldehyde-free plywood with pressure resistance and environmental protection functions as claimed in claim 1, wherein: the top of panel (5) is equipped with decorative board (6), just third slot (9) have all been seted up to four corners of the upper surface of panel (5), third slot (9) are seted up fluted (19) towards the medial surface in outside, the inside of recess (19) is fixed with spring (19), spring (19) are fixed with iron plate (15) towards inboard one end, the inside at four turnings of decorative board (6) all is fixed with third inserted block (11), third inserted block (11) are open-top's hollow structure, just bayonet socket (8) have been seted up towards the side in outside to third inserted block (11), the top of third inserted block (11) is dismantled and is connected with closing cap (16), the bottom of closing cap (16) is fixed with magnetic path (17).

6. The aldehyde-free plywood with pressure resistance and environmental protection functions as claimed in claim 5, wherein: the upper surface of the cover (16) is flush with the upper surface of the decorative plate (6), and the color of the cover (16) is the same as that of the decorative plate (6).

7. The aldehyde-free plywood with pressure resistance and environmental protection functions as claimed in claim 6, wherein: the top of the decorative plate (6) is coated with an oleophobic hydrophobic layer (7).

8. The aldehyde-free plywood with pressure resistance and environmental protection functions as claimed in claim 1, wherein: and a sealing ring (27) is fixed at the top of the inner side wall of the circular groove (22).

9. A preparation method of aldehyde-free plywood with pressure-resistant and environment-friendly functions is characterized by comprising the following steps: the method comprises the following steps:

s1, manufacturing a substrate (3): selecting a plate for manufacturing a substrate, cutting the plate into required sizes by adopting cutting equipment, then arranging rectangular first slots (10) at four corners of the upper surface and the lower surface of the cut plate, arranging second slots (12) at the four corners of the upper surface and the lower surface of the plate and positioned at the inner sides of the first slots (10), then, holes are formed at the positions, corresponding to the first slot (10), of the two sides of the plate until the first slot (10) is communicated with the second slot (12), then cutting and manufacturing a clamping plate (14) matched with the size of the opening, cutting one end of the clamping plate (14) facing outwards into an inclined plane, then one end of the inclined surface of the card board (14) is inserted into the opening outwards until the card board is completely positioned between the first slot (10) and the second slot (12), then, the opening is blocked by using a wood block matched with the size of the opening, and the substrate (3) is manufactured;

s2, manufacturing a panel (5) and a bottom plate (1): cutting a plate into a plate shape with the same size as a substrate, fixing a first inserting block (4) at four corners of two opposite sides of the plate in a mortise-tenon mode, arranging a first clamping groove (2) at the inner side of the first inserting block (4), fixing a second inserting block (13) at the inner side of the first inserting block (4) at the four corners of the two opposite sides of the plate in a mortise-tenon mode, arranging third inserting grooves (9) at the four corners of the upper surface of the plate, forming holes at the positions, corresponding to the third inserting grooves (9), of the two sides of the plate, selecting a small wood block matched with the size of the hole, fixing a spring (19) at one side of the small wood block, fixing an iron block at the other end of the spring, inserting one end of the small wood block with the spring (19) into the hole as the inner side, plugging the hole, and selecting two rubber pads (20) with a honeycomb structure inside, through holes are formed in positions, corresponding to the first inserting blocks (4) and the second inserting blocks (13), of the rubber pads (20), the rubber pads are attached to the opposite sides of the upper plate and the lower plate respectively and fixed on the upper plate and the lower plate in a hot melting mode, a T-shaped groove (26) is formed in the lower plate from front to back, a plurality of vertical rods (23) are fixed on the two sides of the bottom of the lower plate from front to back at equal intervals, and therefore the panel (5) and the bottom plate (1) can be manufactured;

s3, manufacturing a decorative plate (6): cutting a plate into a plate shape with the same size as a panel (5), then opening holes at four corners of the plate, then manufacturing four small blocks matched with the opening in mortise and tenon manner, taking the top surfaces of the four small blocks as starting surfaces, hollowing the interiors of the small blocks, arranging bayonets (8) at one sides of the small blocks, then manufacturing sealing covers (16) matched with the top openings of the four small blocks, inserting fixed magnetic blocks (17) at the bottoms of the sealing covers (16), then inserting the sealing covers (16) into the small blocks to form third inserting blocks (11), then inserting the third inserting blocks (11) into the openings in mortise and tenon manner, making the tops of the sealing covers (16) flush with the tops of hydrophobic layers of the plate, then coating the top surfaces of the plate with oleophobic layers (7), and finishing the manufacturing of a decorative plate (6);

s4, manufacturing a bearing plate (21): cutting a plate into a plate shape with the same size as the substrate (3), polishing the plate body from front to back by using a cutting and polishing device to enable the plate body to form a U-shaped structure, drilling a plurality of circular grooves (22) on two sides of the top of the plate body of the U-shaped structure from front to back at equal intervals by using vertical cylinder drilling equipment, injecting buffer oil into the circular grooves (22), putting floating bodies (28) which are made of foam and provided with a plurality of through holes (29) into the circular grooves, and fixing a sealing ring (27) on the top of the inner wall of each circular groove;

s5, assembling: the panel (5) and the bottom plate (1) are respectively arranged at the top and the bottom of the substrate (3), then four first insertion blocks (4) and four second insertion blocks (13) on the panel (5) are respectively inserted into four first slots (10) and four second slots (12) at the top of the substrate (3), at the moment, under the action of the second insertion blocks (13), the clamping plate (14) can gradually move towards the inside of the first slots (10) and is finally clamped into the clamping groove (2) on the first insertion blocks (4), the fixed connection between the substrate (3) and the panel (5) is completed, the fixed connection between the bottom plate (1) and the substrate (3) is in the same way, then the decorative plate (5) is arranged at the top of the panel (5), and four third insertion blocks (11) on the decorative plate (6) are inserted into four third slots (9) on the panel (5), at the moment, because of the action of the magnetic blocks inside the third insertion blocks (11), the iron block (15) in the third slot (9) is attracted and finally clamped into the bayonet (8) to complete the fixed connection between the decorative plate (6) and the panel (5), then the T-shaped block (24) is inserted into the T-shaped slot (26) from front to back, at the moment, the plurality of vertical rods (23) are respectively inserted into the plurality of circular slots (22) to complete the combination of the bottom plate (1) and the bearing plate (21), and at the moment, the combined installation of the whole plate body is completed;

s6, dismounting and replacing the damaged decorative plate (6): when the decorative plate (6) is damaged to influence the attractiveness or the use, a user can insert a drill into the sealing cover (16) by using an electric drill, then the sealing cover (16) and the magnetic block (17) can be pulled out from the third inserting block (11) by forcing outwards, the block (15) is free from the magnetic force of the magnetic block (17), the iron block (15) and the bayonet (8) are separated from each other under the action of the spring (19), then the damaged decorative plate (6) is taken down from the panel (5), and then the operation of replacing the new decorative plate (6) is the same as the operation of installing the decorative plate (6) in the step S4.