High-strength plate structure and preparation process thereof

Abstract

The invention relates to the field of furniture plates, in particular to a high-strength plate structure and a preparation process thereof. The high-strength plate comprises seven layers of plate bodies and comprises surface layers on the surfaces of the two sides, secondary surface layers on the inner sides of the surface layers on the two sides, core plate outer layers on the inner sides of the secondary surface layers on the two sides and a core plate in the center of the plate body, all the layers of the high-strength plate body are arranged in a staggered mode in the fiber texture direction, the thickness of the surface layers is 0.8-1.2 mm, the thickness of the secondary surface layers is 1-1.5 mm, the thickness of the core plate outer layers is 0.8-1.2 mm, and the thickness of the core plate outer layers is 0.8-1.2 mm. The thickness of the core plate is 7-10 mm; a supporting groove is further formed in the high-strength plate in a penetrating mode, a square supporting pipe with the same size as the supporting groove is further arranged in the supporting groove, and a straightening device used for adjusting deformation of the plate is further arranged in the square supporting pipe. The plate provided by the invention has better strength and can well cope with transverse and longitudinal bending and pressing resistance strength, and a built-in straightener is further arranged in the plate, so that deformation of the plate can be better straightened and corrected.

Description

Technical Field

[0001] The invention relates to the field of furniture boards, and in particular to a high-strength board structure and a preparation process thereof. Background Art

[0002] With the development of the construction and furniture industries, the application and demand for panels are also increasing. Traditional man-made panels such as density boards, particle boards, plywood and other types of panels have come into being. In order to meet people's requirements for the aesthetics of furniture and interior decoration, various decorative panels have gradually been used; and blockboard is one of the most widely used man-made panels. It is made of a core board with two side panels sandwiched between wooden strips. Because blockboard has high bending and compressive strength in the direction of the core board strips, it is often used in interior wall decoration, interior door and window production, and wardrobe and other furniture production. Blockboard has good dimensional stability and excellent processing performance. Its cost is lower than that of solid wood materials, and it can also achieve beautiful effects through surface decoration, so it is widely used.

[0003] However, due to the influence of factors such as the use of wood strips in the core board and the processing and splicing technology, the existing blockboard has a high transverse bending and compressive strength but a relatively weak longitudinal bending and compressive strength. Since its strength is mainly concentrated in the arrangement direction of the core board strips, when subjected to external forces perpendicular to the direction of the core board strips, the blockboard as a whole is prone to deformation, thereby affecting the overall stability of the furniture or structure. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the existing blockboard has poor overall strength and is easy to deform, and to provide a high-strength board structure and its preparation process. The board has higher strength, can well cope with the longitudinal bending and compressive strength it is subjected to, and has a good method for dealing with the deformation of the board.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A high-strength plate structure and a preparation process thereof, comprising the following steps: S1. Material selection and preparation: select high-quality oak hardwood veneer as the surface layer on both sides of the high-strength board, with a thickness of 0.8-1.2mm; select high-density poplar cork veneer as the secondary surface layer of the high-strength board, with a thickness of 1-1.5mm; select high-quality walnut hardwood veneer as the core board outer layer of the high-strength board, with a thickness of 0.8-1.2mm; select melamine-modified phenolic resin glue as the adhesive between the layers of the high-strength board; S2. Preparation of core board: select birch solid wood strips with high strength as the material of the core board of high-strength board, dry the solid wood strips, control the moisture content of the solid wood strips after drying to be between 8% and 12%, use a cutting saw to cut the solid wood strips into the length and width required for board making, polish the surface of the solid wood strips to make the surface smooth and flat, the width of the polished solid wood strips is 30-35mm, and the thickness is 7-10mm. The polished solid wood strips are spliced ​​into a core board by finger jointing. S3, assembling the boards, laying the hardwood veneer of the first layer on the assembly workbench of the board making device, gluing and pasting the softwood veneer of the second layer on it in a direction perpendicular to the first layer in terms of the fiber direction; then, sequentially arranging the outer layer of the core board of the third layer, the core board of the fourth layer and the outer layer of the core board of the fifth layer vertically in the direction of the fiber texture, gluing them in sequence and bonding them to the second layer; gluing the outer layer of the core board of the fifth layer, and then gluing the sub-surface layer of the sixth layer in a vertical direction; finally, gluing the surface layer of the seventh layer in a direction perpendicular to the fiber and bonding it to the sub-surface layer of the sixth layer, to complete the assembly; S4, hot pressing of the plate, sending the assembled plate into the hot pressing device of the plate making device for uniform pressing, the hot pressing temperature is between 110℃~120℃, the hot pressing pressure is 10MPa~12MPa, and the hot pressing time is 10min~13min; S5, cooling of the plate, sending the hot pressed plate into the strong cooling device of the plate making device for cooling treatment, the air cooling temperature of the cooling treatment is 20℃~30℃, and the cooling time is between 1.5h~2h; S6, plate tempering, the plate after cooling is sent to the tempering equipment of the plate making device for tempering treatment, the tempering temperature in the tempering equipment is 50℃~70℃, the heating rate of the tempering equipment is 5℃~10℃ per hour, and the tempering time is 5h~7h; after the tempering reaches the set temperature, it will be kept warm, and the tempering equipment will maintain the temperature for 2h~4h; after the holding time is over, the temperature in the tempering equipment will no longer be maintained, and the entire tempering treatment is completed after the plate is cooled to room temperature; S7, sanding and finishing, sanding the plate after tempering to make the surface of the plate smooth and flat, and finishing the surface of the plate after sanding to remove the burrs on the edge of the plate and the uneven parts on the surface, so that the size of the plate meets the requirements; S8. Quality inspection: perform quality inspection on the high-strength plates after preparation.

[0006] The surface layer of the board uses a hard veneer made of oak, which can play a decorative and protective role. Due to its high hardness, it can resist external physical damage such as friction and collision. At the same time, it can provide the board with a good appearance texture. When under pressure, it can also disperse part of the pressure to the lower structure. Due to its dense fiber structure, it can also prevent the erosion of moisture and chemicals to a certain extent; the sub-surface layer of the board uses a soft veneer made of poplar with a higher density. The sub-surface layers on both sides play a transitional role, which can enhance the bonding force between the surface layer and the core layer, and make the stress more effectively transferred between different layers. When the board is subjected to external force, the sub-surface layer can buffer part of the pressure to prevent the stress from being concentrated at one point and causing damage to the board. In addition, since the sub-surface material is softer, it can resist the erosion of moisture and chemicals during the hot pressing process. The outer layer of the core board of the board uses walnut hardwood veneer. The outer layer of the core board has high strength, which can provide a certain support for the middle core board in the force direction of the board, and while bearing pressure and tension, it can also resist deformation through its own fiber strength; the core board in the middle of the board is the most important stress-bearing part of the entire board. It is made of high-strength birch solid wood strips through finger jointing. These solid wood strips are tightly spliced ​​to make the connection between wood fibers more firmly. The core board is the key part of the strength of the entire board. It provides the most important support for the board. When the board is subjected to external forces such as pressure and bending force, the core board relies on the splicing structure of the solid wood strips and its own strength to resist deformation, thereby ensuring the overall strength of the board.

[0007] The boards are bonded together by hot pressing and gluing using a hot pressing device. The boards need to be cooled after hot pressing because the temperature of the boards after hot pressing is high and the wood fibers and adhesives inside are in a relatively active state. Cooling can gradually stabilize the wood fibers and the adhesives can further solidify during the cooling process, thereby improving the adhesive properties of the adhesives. The cooled boards also need to be tempered because residual stress will be generated inside the boards due to factors such as uneven expansion or contraction of wood fibers during hot pressing and curing shrinkage of adhesives. Under the relatively mild temperature environment of the tempering equipment, the wood fibers and adhesives in the boards will slowly relax, releasing these residual stresses. Boards that have released overstress are less likely to crack or deform during subsequent use, thereby improving the stability and durability of the boards.

[0008] Preferably, the high-strength board has seven layers of board, including the surface layer on both sides, the sub-surface layer inside the surface layer on both sides, the core board outer layer inside the sub-surface layer on both sides and the core board at the center of the board, each layer of the high-strength board is staggered according to the fiber texture direction, the thickness of the surface layer is 0.8-1.2mm, the thickness of the sub-surface layer is 1-1.5mm, the thickness of the core board outer layer is 0.8-1.2mm, and the thickness of the core board is 7~10mm; the layers of the board are staggered according to the fiber texture direction of the wood. Since the tensile and compressive strength of the wood in the longitudinal direction are much greater than that in the transverse direction, when the board is subjected to pressure or bending force, the staggered arrangement of the fiber texture can allow each layer of the veneer to share the stress in different directions, avoiding bending, deformation or breakage of the board due to excessive force in a single direction, thereby significantly improving the bending strength of the high-strength board, making it more able to withstand larger external forces and not easily deformed.

[0009] Preferably, the plate making device includes the assembling workbench, which is arranged outside the device, connected to one end of the input conveying device in the plate making device, and the other end of the input conveying device is connected to the hot pressing device, and an output conveying device is also arranged on the side of the hot pressing device opposite to the input conveying device; after the assembling work of the plate is completed on the assembling workbench, the plate can be sent into the hot pressing device through the input conveying device for hot pressing, and there is no need to manually send the plate into the hot pressing device, which not only improves the production efficiency of the plate production, but also improves the safety of the plate production process. The plate after hot pressing can be sent out through the output conveying device.

[0010] Preferably, the hot pressing device includes a hot pressing body, a hot pressing bottom plate is arranged on the hot pressing body, a hot pressing plate is arranged parallel to the hot pressing bottom plate, the hot pressing plate is connected to the hot pressing body through a hydraulic arm, one side of the hot pressing bottom plate is connected to the input conveying device, and the other side of the hot pressing bottom plate is connected to the output conveying device; the hot pressing plate can be pushed downward to press the plate on the hot pressing bottom plate through the hydraulic movement of the hydraulic arm, the hydraulic arm of the hot pressing device can provide the pressure required in the hot pressing process, and the hot pressing plate can provide the temperature required in the hot pressing process.

[0011] Preferably, the forced cooling device is arranged on the conveyor belt of the output conveying device, and the conveyor belt of the output conveying device passes through the interior of the forced cooling device. The forced cooling device is also provided with a plurality of air cooling ports. The plates after hot pressing are sent to the forced cooling device through the output conveying device, and the air cooling ports of the forced cooling device blow out cold air to cool down the plates after hot pressing. The use of the forced cooling device can accelerate the cooling speed of the plates after hot pressing to room temperature, thereby greatly improving the production efficiency of high-strength plates.

[0012] Preferably, the tempering equipment is arranged on the other side connected to the output conveying device, and the tempering equipment is arranged outside the plate making device; the plate after cooling will be transported to the tempering equipment through the output conveying device for tempering treatment, and the heating rate of the tempering equipment is between 5°C and 10°C per hour, and the temperature rise is relatively mild, which can effectively release the stress generated during the hot pressing process, and at the same time avoid the generation of new stress inside the plate due to the drastic temperature change during the tempering process.

[0013] Preferably, a support groove is provided inside the high-strength plate, a square support tube of the same size is provided inside the support groove, a straightener for adjusting the deformation of the plate is provided inside the square support tube, and the width of the square support tube along the cross-sectional direction of the high-strength plate is wider than the width of the straightener; the high-strength plate is also provided with a built-in straightener, which does not require grooving on the surface of the plate and does not damage the internal structure of the plate, making the internal structure of the plate more stable and the appearance of the plate more beautiful; a support tube is buried in the support groove of the high-strength plate, and the straightener of the plate is arranged in the support tube, and the support plates on both sides of the straightener can support the support tube, and the width of the square support tube along the cross-sectional direction of the high-strength plate is wider than the width of the straightener, and the straightening of the plate is achieved by adjusting the pull rod to deform the tube body of the straightener and applying a force opposite to the deformation of the plate to the high-strength plate.

[0014] Preferably, the straightener comprises a cylindrical tube body, the tube body is a hollow structure, locking screws are arranged at the port positions at both ends of the tube, and force support plates and load-bearing support plates parallel to each other are arranged on both sides of the tube body, the force support plates are directly connected to the tube body, the load-bearing support plates are connected to the tube body through a connecting part, and the thickness and width of the force support plates are smaller than the load-bearing support plates; the tube body is eccentrically designed relative to the force support plates and the load-bearing support plates, the straightener is made of aluminum alloy, and the pull rod is a steel structure The material of the straightener is relatively softer than that of the pull rod, which makes the straightener easier to deform when adjusting the pull rod, making it easier to straighten and correct the high-strength plate. In the bending deformation of the straightener, since the thickness and width of the force support plate are smaller than the load-bearing support plate, the tube body will bend toward the side of the force support plate that is closer. Therefore, in the process of correcting the high-strength plate, you only need to pay attention to the direction of the force support plate and the load-bearing support plate, which greatly improves the convenience of the straightener in actual use.

[0015] Preferably, a pull rod is provided in the tube body, and the pull rod is composed of several sections, the middle section is a connecting rod, and the two ends are adjusting rods, the connecting rod includes a connecting rod body, and connecting screws are provided at both ends of the connecting rod body, and the screw threads of the connecting screws at both ends are in opposite directions; the adjusting rods at both ends include an adjusting rod body, an adjusting screw is provided at one end of the adjusting rod body, an adjusting hole is provided on the end surface of the adjusting screw, and an adjusting rod threaded hole is also provided at the other end of the adjusting rod body; the connecting screws at both ends of the connecting rod are positive and negative thread structures, and when the connecting rod body is twisted, the adjusting rods connected by the connecting screws at both ends will extend outward or retract inward at the same time, so that the overall length of the pull rod can be well adjusted, and the adjusting rod is threadedly connected to the connecting screws at both ends of the connecting rod body through the adjusting rod threaded holes, and the adjusting rods are threadedly connected to the adjusting rods at both ends of the connecting rod, and the connecting rod and the adjusting rod together constitute the pull rod.

[0016] Preferably, locking pieces are threadedly connected at both ends of the pull rod, the locking piece is provided with external teeth on the outside, and the inside is a hollow structure, internal teeth are provided in the hollow structure, and a locking piece adjustment hole for adjustment is also provided on one side of the inside, the connecting rod is threadedly connected and installed with the adjusting rod threaded hole of the adjusting rod through the connecting screw, the adjusting rod is threadedly connected with the internal teeth of the locking piece through the adjusting screw, the adjusting rod can be adjusted by threads in the locking piece, and the external teeth of the locking piece are threadedly installed on the locking screw teeth of the straightener; the locking piece is connected to the locking screws at the two ends of the straightener tube body through external threads The adjusting screw of the adjusting rod of the pull rod is threadedly connected to the inner teeth, and the pull rod can move in the inner teeth by rotating the adjusting screw; one end of the adjusting rod is threadedly connected to the connecting rod, and the other end is threadedly connected to the inner teeth of the locking piece. When straightening and correcting the high-strength plate, you only need to insert the hexagonal wrench into the adjusting hole on the end face of the adjusting screw, and then rotate the wrench to make the pull rod as a whole move slightly in the straightener tube, so as to achieve straightening of the high-strength plate; adjustment holes are provided at the cross-sectional positions at both ends of the pull rod, and the pull rod can also be rotated at both ends at the same time, so that the straightening and correction efficiency of the straightener is higher.

[0017] In summary, the beneficial effects of the present invention are: 1. A high-strength board structure and a preparation process thereof described in the present invention, wherein the high-strength board is made of seven layers of boards through hot pressing and gluing, wherein the two layers of the surface layer are hard veneers made of oak, which can resist external physical damage such as friction and collision, and can also provide the board with a good appearance texture, and the two layers of the sub-surface layer are soft veneers made of poplar with a higher density, which can buffer part of the pressure and prevent stress from concentrating on one point and causing damage to the board, and the two layers of the outer layer of the core board are hard veneers made of walnut, which can withstand pressure and tension while resisting deformation through its own fiber strength, and the core board is made of high-strength birch solid wood strips through finger jointing, and the structure of the high-strength board makes its overall strength higher and its ability to resist deformation stronger; 2. A high-strength plate structure and a preparation process thereof described in the present invention, wherein the high-strength plate is cooled after hot pressing, and the plate is cooled by a strong cooling device, and the cooled plate is further subjected to a quenching and tempering treatment. The mild environment in the quenching and tempering device can better release the stress of the plate, so that the plate is not prone to cracking and deformation during subsequent use, thereby improving the stability and durability of the plate; 3. A high-strength plate structure and its preparation process described in the present invention, wherein the high-strength plate is also equipped with an efficient plate-making device, which connects the processes of assembly, hot pressing, cooling, quenching and tempering, so as to make the plate production more efficient. The plate-making device not only improves the production efficiency of the plate, but also improves the safety during the plate production process; 4. A high-strength plate structure and a preparation process thereof described in the present invention, wherein a straightener is further arranged in the high-strength plate, and the straightener is a built-in straightener, which does not require grooving on the surface of the plate, and does not damage the surface and internal structure of the plate, and can also make the furniture made of the plate more beautiful. The pull rod in the straightening tube is composed of multiple sections, which can withstand greater force during adjustment and can better cope with the situation of large deformation of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the high-strength plate of the present invention; Figure 2 It is a structural schematic diagram of the plate making device of the present invention; Figure 3 It is a schematic diagram of the structure of the plate straightener of the present invention; Figure 4 It is a schematic diagram of the overall structure of the straightener of the present invention; Figure 5 It is a schematic diagram of the internal structure of the straightener of the present invention; Figure 6 It is a schematic diagram of the pull rod structure of the present invention; Figure 7 It is a structural schematic diagram of the connecting rod and the adjusting rod of the present invention; Figure 8 It is a schematic diagram of the locking member structure of the present invention.

[0019] Markings in the figure: 1-high-strength plate, 11-surface layer, 12-subsurface layer, 13-core plate outer layer, 14-core plate, 2-plate making device, 201-assembly workbench, 202-input conveyor, 203-hot pressing device, 2031-hot pressing body, 2032-hot pressing bottom plate, 2033-hot pressing plate, 2034-hydraulic arm, 204-output conveyor, 205-force cooling device, 2051-air cooling port, 206-quenching and tempering device, 3-support Groove, 31-square support tube, 4-straightener, 41-tube body, 42-locking screw, 43-force support plate, 44-load support plate, 45-connecting part, 5-pull rod, 51-connecting rod, 511-connecting rod body, 512-connecting screw rod, 52-adjusting rod, 521-adjusting rod body, 522-adjusting screw rod, 523-adjusting hole, 524-adjusting rod threaded hole, 6-locking piece, 61-external tooth, 62-internal tooth, 63-locking piece adjustment hole. DETAILED DESCRIPTION

[0020] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

[0021] The present invention will be described in detail below with reference to the accompanying drawings by way of embodiments.

[0022] Example 1

[0023] according to Figure 1 , Figure 2 As shown, a high-strength plate structure and a preparation process thereof include the following steps: S1. Material selection and preparation: select high-quality oak hardwood veneer as the surface layer 11 on both sides of the high-strength board 1, with a thickness of 1mm; select high-density poplar softwood veneer as the sub-surface layer 12 of the high-strength board 1, with a thickness of 1.2mm; select high-quality walnut hardwood veneer as the core board outer layer 13 of the high-strength board 1, with a thickness of 1mm; select melamine-modified phenolic resin glue as the adhesive between the layers of the high-strength board 1; S2, core board preparation, select high-strength birch solid wood strips as the material of the core board 14 of the high-strength board 1, dry the solid wood strips, the moisture content of the solid wood strips after drying is 8%, use a cutting saw to cut the solid wood strips into the length and width required for board making, polish the surface of the solid wood strips to make it smooth and flat, the width of the polished solid wood strips is 30mm, and the thickness is 10mm. The polished solid wood strips are spliced ​​by finger jointing to form a core board 14; S3, assembling the board, laying the hardwood veneer of the surface layer 11 of the first layer flat on the assembly workbench 201 of the board making device 2, and gluing the softwood veneer of the sub-surface layer 12 of the second layer on it in a direction perpendicular to the first layer in the fiber direction; then, sequentially arrange the core board outer layer 13 of the third layer, the core board 14 of the fourth layer and the core board outer layer 13 of the fifth layer vertically in the direction of fiber texture, and glue them on the second layer in sequence; glue is applied on the core board outer layer 13 of the fifth layer, and then the sub-surface layer 12 of the sixth layer is glued in a vertical direction; finally, the surface layer 11 of the seventh layer is glued in a direction perpendicular to the fiber and then glued on the sub-surface layer 12 of the sixth layer to complete the assembly; S4, hot pressing of the plate, sending the assembled plate into the hot pressing device 203 of the plate making device 2 for uniform pressing, the hot pressing temperature is 110°C, the hot pressing pressure is 10MPa, and the hot pressing time is 10min; S5, cooling the plate, sending the hot pressed plate into the strong cooling device 205 of the plate making device 2 for cooling treatment, the air cooling temperature of the cooling treatment is 20°C, and the cooling time is 1.5h; S6, plate tempering, the plate after cooling is sent to the tempering device 206 of the plate making device 2 for tempering treatment, the tempering temperature in the tempering device 206 is 70°C, the heating rate of the tempering device 206 is 10°C per hour, and the tempering time is 5h; after the tempering reaches the set temperature, it will be kept warm, and the tempering device 206 will maintain the temperature for 2h; after the insulation time is over, the temperature in the tempering device 206 is no longer maintained, and the entire tempering treatment is completed after the plate is cooled to room temperature; S7, sanding and finishing, sanding the plate after tempering to make the surface of the plate smooth and flat, and finishing the surface of the plate after sanding to remove the burrs on the edge of the plate and the uneven parts on the surface, so that the size of the plate meets the requirements; S8, quality inspection, performing quality inspection on the prepared high-strength plate 1.

[0024] The surface layer 11 of the high-strength board 1 uses a hard veneer made of oak, which can play a decorative and protective role. Due to its high hardness, it can resist external physical damage such as friction and collision, and at the same time provide the board with a good appearance texture. When under pressure, it can also disperse part of the pressure to the lower structure. Due to its dense fiber structure, it can also prevent erosion by moisture and chemicals to a certain extent; the sub-surface layer 12 of the high-strength board 1 uses a softwood veneer made of poplar with a higher density. The sub-surface layers on both sides play a transitional role, which can enhance the bonding force between the surface layer and the core layer, and make the stress more effectively transferred between different layers. When the board is subjected to external force, the sub-surface layer 12 can buffer part of the pressure to prevent the stress from being concentrated at one point and causing damage to the board. Moreover, since the material of the sub-surface layer 12 is relatively soft, during the hot pressing process It can better fit with the upper and lower layers; the core board outer layer 13 of the high-strength board 1 uses a walnut hardwood veneer, and the core board outer layer 13 has high strength, which can provide a certain support force for the middle core board in the force direction of the board, and while bearing pressure and tension, it can also resist deformation through its own fiber strength; the core board 14 in the middle position of the high-strength board 1 is the most important stress-bearing part of the entire board. It is made of high-strength birch solid wood strips through finger jointing. These solid wood strips are spliced ​​tightly to make the connection between the wood fibers more firmly. The core board 14 is the key part of the strength of the entire board. It provides the most important supporting force for the board. When the board is subjected to external forces such as pressure and bending force, the core board 14 relies on the splicing structure of the solid wood strips and its own strength to resist deformation, thereby ensuring the overall strength of the board.

[0025] The boards are bonded together by hot pressing and gluing by the hot pressing device 203. The boards after hot pressing need to be cooled because the temperature of the boards after hot pressing is relatively high and the wood fibers and adhesives inside are in a relatively active state. The wood fibers can be gradually stabilized by cooling and the adhesive can be further solidified during the cooling process, thereby improving the adhesive properties of the adhesive. The cooled boards also need to be tempered because residual stress will be generated inside the boards due to factors such as uneven expansion or contraction of the wood fibers during the hot pressing process and curing shrinkage of the adhesive. Under the relatively mild temperature environment of the tempering equipment 206, the wood fibers and adhesives in the boards will slowly relax, releasing these residual stresses. The boards that have released the overstress will not easily crack or deform during subsequent use, thereby improving the stability and durability of the boards.

[0026] according to Figure 1As shown, the high-strength board 1 has a total of seven layers of board, including a surface layer 11 on both sides, a sub-surface layer 12 inside the surface layer 11 on both sides, a core board outer layer 13 inside the sub-surface layer 12 on both sides, and a core board 14 in the center of the board. Each layer of the high-strength board 1 is staggered according to the fiber texture direction. The thickness of the surface layer 11 is 1 mm, the thickness of the sub-surface layer 12 is 1.2 mm, the thickness of the core board outer layer 13 is 1 mm, and the thickness of the core board 14 is 1 mm; the layers of the high-strength board 1 are staggered according to the fiber texture direction of the wood. Since the tensile and compressive strengths of the wood in the longitudinal direction are much greater than those in the transverse direction, when the board is subjected to pressure or bending force, the staggered arrangement of the fiber texture can allow each layer of the veneer to share the stress in different directions, avoiding bending, deformation or fracture of the board due to excessive force in a single direction, thereby significantly improving the bending strength of the high-strength board 1, making it more able to withstand larger external forces and not easily deformed.

[0027] according to Figure 2 As shown, the plate making device 2 includes a blank assembly workbench 201, which is arranged outside the device, and the blank assembly workbench 201 is connected to one end of an input conveying device 202 in the plate making device 2, and the other end of the input conveying device 202 is connected to the hot pressing device 203, and the hot pressing device 203 is also provided with an output conveying device 204 on the side opposite to the input conveying device 202; the hot pressing device 203 includes a hot pressing body 2031, a hot pressing bottom plate 2032 is arranged on the hot pressing body, and a hot pressing plate 2033 is arranged above the hot pressing bottom plate 2032 in parallel, and the hot pressing plate 2033 is connected to the hot pressing body 2031 through a hydraulic arm 2034, and one side of the hot pressing bottom plate 2032 is connected to the input conveying device 202, and the hot pressing bottom plate 20 The other side of 32 is connected with an output conveyor 204; after the assembly work of the plate is completed on the assembly workbench 201, the plate can be sent to the hot pressing device 203 through the input conveyor 202 for hot pressing of the plate, and there is no need to manually send the plate into the hot pressing device 203, which not only improves the production efficiency of the plate production, but also improves the safety of the plate production process. The hot pressing device 203 can push the hot pressing plate 2033 to press down the plate on the hot pressing bottom plate 2032 through the hydraulic movement of the hydraulic arm 2034. The hydraulic arm 2034 of the hot pressing device 203 can provide the pressure required in the hot pressing process, and the hot pressing plate 2033 can provide the temperature required in the hot pressing process. The plate after hot pressing can be sent out through the output conveyor 204.

[0028] according to Figure 2As shown, a strong cooling device 205 is arranged on the conveyor belt of the output conveyor 204, and the conveyor belt of the output conveyor 204 passes through the interior of the strong cooling device 205. The strong cooling device 205 is also provided with a plurality of air cooling ports 2051; a tempering device 206 is arranged on the other side connected to the output conveyor 204, and the tempering device 206 is arranged outside the plate making device 2; the plate after hot pressing is sent to the strong cooling device 205 through the output conveyor 204, and the air cooling port 2051 of the strong cooling device 205 will blow out cold air to cool down the plate after hot pressing. The use of the strong cooling device 205 can accelerate the speed at which the plate after hot pressing is cooled to room temperature, greatly improving the production efficiency of the high-strength plate 1. After cooling, the plate will be transported to the tempering device 206 through the output conveyor 204 for tempering treatment. The heating rate of the tempering device 206 is between 5°C and 10°C per hour, and the temperature rise is relatively mild, which can effectively release the stress generated during the hot pressing process, and at the same time avoid the generation of new stress inside the plate due to the drastic temperature change during the tempering process.

[0029] Example 2

[0030] according to Figure 3 , Figure 4 As shown, the difference from the above-mentioned embodiment 1 is that a support groove 3 is also provided inside the high-strength plate 1, and a square support tube 31 of the same size is also provided inside the support groove 3, and a straightener 4 for adjusting the deformation of the plate is also provided inside the square support tube 31, and the width of the square support tube 31 along the cross-sectional direction of the high-strength plate 1 is wider than the width of the straightener 4; the high-strength plate 1 is also provided with a built-in straightener 4, and there is no need to groove the surface of the plate, which will not damage the internal structure of the plate, making the internal structure of the plate more stable and the appearance of the plate more beautiful. A square support tube 31 is buried in the support groove 3 of the high-strength plate 1, and the straightener 4 of the plate is arranged in the square support tube 31. The support plates on both sides of the straightener 4 can support the square support tube 31, and the width of the square support tube 31 along the cross-sectional direction of the high-strength plate 1 is wider than the width of the straightener 4. The pull rod 5 is adjusted to deform the tube body 41 of the straightener 4, and then a force opposite to the deformation of the plate is applied to the high-strength plate 1 to achieve straightening of the plate.

[0031] according to Figure 4As shown, the straightener 4 includes a cylindrical tube body 41, which is a hollow structure. Locking screws 42 are arranged at the port positions at both ends of the tube. A force support plate 43 and a load support plate 44 are arranged on both sides of the tube body 41 in parallel with each other. The force support plate 43 is directly connected to the tube body 41, and the load support plate 44 is connected to the tube body 41 through a connecting portion 45. The thickness and width of the force support plate 43 are smaller than the load support plate 44; the tube body 41 is eccentrically designed relative to the force support plate 43 and the load support plate 44. The straightener 4 is made of aluminum alloy, the pull rod 5 is made of steel structure, and the pull rod 5 is made of steel structure. The material of the straightener 4 is relatively softer than that of the pull rod 5, which makes it easier for the straightener 4 to deform when adjusting the pull rod 5, making it easier to straighten and correct the high-strength plate 1. In the bending deformation of the straightener 4, since the thickness and width of the force support plate 43 are smaller than the load-bearing support plate 44, the tube body 41 will bend toward the side of the force support plate 43 which is closer. Therefore, in the process of correcting the high-strength plate 1, you only need to pay attention to the direction of the force support plate 43 and the load-bearing support plate 44, which greatly improves the convenience of the straightener 4 in actual use.

[0032] according to Figure 5~Figure 7 As shown, a pull rod 5 is arranged in the tube body 41, and the pull rod 5 is composed of several sections. The middle section is a connecting rod 51, and the two ends are adjusting rods 52. The connecting rod 51 includes a connecting rod body 511, and connecting screw rods 512 are arranged at both ends of the connecting rod body 511. The screw threads of the connecting screw rods 512 at both ends are in opposite directions. The adjusting rods 52 at both ends include an adjusting rod body 521, and an adjusting screw rod 522 is arranged at one end of the adjusting rod body 521. The end surface of the adjusting screw rod 522 is provided with an adjusting hole 523, and the other end of the adjusting rod body 521 is provided with an adjusting hole 523. An adjusting rod threaded hole 524 is also provided; the connecting screws 512 at both ends of the connecting rod 51 are of a positive and negative thread structure. When the connecting rod body 511 is screwed, the adjusting rod 52 connected by the connecting screws 512 at both ends will extend outward or retract inward at the same time, which can well adjust the overall length of the pull rod 5. The adjusting rod 52 is threadedly connected to the connecting screws 512 at both ends of the connecting rod body 511 through the adjusting rod threaded hole 524. The adjusting rods 52 are threadedly connected to both ends of the connecting rod 51, and the connecting rod 51 and the adjusting rod 52 together constitute the pull rod 5.

[0033] according to Figure 6 , Figure 8As shown, the two ends of the pull rod 5 are threadedly connected with locking members 6, the outer side of the locking member 6 is provided with external teeth 61, the interior is a hollow structure, the inner side is provided with internal teeth 62, and one side of the interior is also provided with a locking member adjustment hole 63 for adjustment, the connecting rod 51 is threadedly connected and installed with the adjusting rod threaded hole 524 of the adjusting rod 52 through the connecting screw 512, the adjusting rod 52 is threadedly connected with the internal teeth 62 of the locking member 6 through the adjusting screw 522, the adjusting rod 52 can be adjusted through the thread in the locking member 6, the external teeth 61 of the locking member 6 is threadedly installed on the locking screw teeth 42 of the straightener 4; the locking member 6 is threadedly connected to the locking screw teeth 42 at the two ends of the tube body 41 of the straightener 4 through the external teeth 61, and the hollow structure inside the locking member 6 An internal thread 62 is provided in the middle, and an adjusting screw 522 of the adjusting rod 52 of the pull rod 5 is threadedly connected to the internal thread 62. The pull rod 5 can be moved in the internal thread 62 by rotating the adjusting screw 522. One end of the adjusting rod 52 is threadedly connected to the connecting rod 51, and the other end is threadedly connected to the internal thread 62 of the locking member 6. When straightening and correcting the high-strength plate 1, it is only necessary to insert an inner hexagonal wrench into the adjusting hole 523 on the end face of the adjusting screw 522, and then rotate the wrench to make the pull rod 5 as a whole slightly move in the tube of the straightener 4, so as to achieve straightening of the high-strength plate 1. Adjustment holes 523 are provided at the cross-sectional positions at both ends of the pull rod 5, and the pull rod 5 can also be rotated at both ends at the same time to make the straightening and correction efficiency of the straightener 4 higher.

Claims

1. A high-strength plate structure and a preparation process thereof, characterized in that: The following steps are involved: S1, material selection and preparation, selecting high-quality oak hardwood veneer as the surface layer (11) on both sides of the high-strength board (1), with a thickness of 0.8-1.2 mm; selecting high-density poplar softwood veneer as the sub-surface layer (12) of the high-strength board (1), with a thickness of 1-1.5 mm; selecting high-quality walnut hardwood veneer as the core board outer layer (13) of the high-strength board (1), with a thickness of 0.8-1.2 mm; selecting melamine-modified phenolic resin glue as the adhesive between the layers of the high-strength board (1); S2, core board preparation, selecting high-strength birch solid wood strips as the material of the core board (14) of the high-strength board (1), drying the solid wood strips, controlling the moisture content of the solid wood strips after drying to be between 8% and 12%, using a cutting saw to cut the solid wood strips into the length and width required for board making, polishing the solid wood strips to make their surfaces smooth and flat, the width of the polished solid wood strips is 30 to 35 mm, and the thickness is 7 to 10 mm, and the polished solid wood strips are spliced ​​by finger jointing to form the core board (14); S3, assembling the board, laying the hardwood veneer of the surface layer (11) of the first layer flat on the assembling workbench (201) of the board making device (2), and gluing the softwood veneer of the sub-surface layer (12) of the second layer thereon in a direction in which the fiber direction is perpendicular to the first layer; Then, the core plate outer layer (13) of the third layer, the core plate (14) of the fourth layer, and the core plate outer layer (13) of the fifth layer are arranged vertically and staggered in accordance with the fiber texture direction, and are coated with glue in turn and bonded to the second layer; glue is coated on the core plate outer layer (13) of the fifth layer, and then bonded to the sub-surface layer (12) of the sixth layer in a vertical direction; finally, glue is coated on the surface layer (11) of the seventh layer in a direction perpendicular to the fibers and then bonded to the sub-surface layer (12) of the sixth layer, thereby completing the assembly; S4, hot pressing of the plate, sending the assembled plate into the hot pressing device (203) of the plate making device (2) for uniform pressing, the hot pressing temperature is between 110°C and 120°C, the hot pressing pressure is between 10MPa and 12MPa, and the hot pressing time is between 10min and 13min; S5, cooling the plate, sending the hot-pressed plate into the forced cooling device (205) of the plate making device (2) for cooling treatment, the air cooling temperature of the cooling treatment is 20°C to 30°C, and the cooling time is between 1.5h and 2h; S6, tempering of the plate, sending the plate after cooling to the tempering equipment (206) of the plate making device (2) for tempering treatment, the tempering temperature in the tempering equipment (206) is 50°C~70°C, wherein the heating rate of the tempering equipment (206) is 5°C~10°C per hour, and the tempering time is 5h~7h; after the tempering reaches the set temperature, a heat preservation treatment is performed, and the tempering equipment (206) maintains the temperature, and the heat preservation treatment time is 2h~4h; after the heat preservation time is over, the temperature in the tempering equipment (206) is no longer maintained, and the entire tempering treatment is completed after the plate is cooled to room temperature; S7, sanding and finishing, sanding the plate after tempering to make the surface of the plate smooth and flat, and finishing the surface of the plate after sanding to remove the burrs on the edge of the plate and the uneven parts on the surface, so that the size of the plate meets the requirements; S8, quality inspection, performing quality inspection on the high-strength plate (1) after preparation.

2. A high-strength plate structure and a preparation process thereof according to claim 1, characterized in that: The high-strength plate (1) has a total of seven layers of plate, including the surface layer (11) on both sides, the sub-surface layer (12) inside the surface layer (11) on both sides, the core plate outer layer (13) inside the sub-surface layer (12) on both sides, and the core plate (14) at the center of the plate; each layer of the high-strength plate (1) is arranged in a staggered manner according to the fiber texture direction, the thickness of the surface layer (11) is 0.8-1.2 mm, the thickness of the sub-surface layer (12) is 1-1.5 mm, the thickness of the core plate outer layer (13) is 0.8-1.2 mm, and the thickness of the core plate (14) is 7-10 mm.

3. A high-strength plate structure and a preparation process thereof according to claim 1, characterized in that: The plate making device (2) comprises the blank assembling workbench (201), wherein the blank assembling workbench (201) is arranged outside the device, the blank assembling workbench (201) is connected to one end of an input conveying device (202) in the plate making device (2), and the other end of the input conveying device (202) is connected to the hot pressing device (203), and an output conveying device (204) is also arranged on the side of the hot pressing device (203) opposite to the input conveying device (202).

4. A high-strength plate structure and a preparation process thereof according to claim 3, characterized in that: The hot pressing device (203) comprises a hot pressing body (2031), a hot pressing bottom plate (2032) is arranged on the hot pressing body, a hot pressing plate (2033) is arranged above the hot pressing bottom plate (2032) in parallel, and the hot pressing plate (2033) is connected to the hot pressing body (2031) via a hydraulic arm (2034); one side of the hot pressing bottom plate (2032) is connected to the input conveying device (202), and the other side of the hot pressing bottom plate (2032) is connected to the output conveying device (204).

5. A high-strength plate structure and a preparation process thereof according to claim 4, characterized in that: The strong cooling device (205) is arranged on the conveyor belt of the output conveyor device (204), the conveyor belt of the output conveyor device (204) passes through the interior of the strong cooling device (205), and the strong cooling device (205) is also provided with a plurality of air cooling ports (2051).

6. A high-strength plate structure and a preparation process thereof according to claim 5, characterized in that: The tempering device (206) is provided on the other side connected to the output conveying device (204), and the tempering device (206) is provided outside the plate making device (2).

7. A high-strength plate structure and a preparation process thereof according to claim 1, characterized in that: The high-strength plate (1) is also provided with a support groove (3) running through it, and a square support tube (31) of the same size as the support groove (3) is also provided inside the support groove; a straightener (4) for adjusting plate deformation is also provided inside the square support tube (31), and the width of the square support tube (31) along the cross-sectional direction of the high-strength plate (1) is wider than the width of the straightener (4).

8. A high-strength plate structure and a preparation process thereof according to claim 7, characterized in that: The straightener (4) comprises a cylindrical tube body (41), the tube body (41) being a hollow structure, and locking screws (42) are arranged at the port positions at both ends of the tube; a force-applying support plate (43) and a force-bearing support plate (44) parallel to each other are arranged on both sides of the tube body (41), the force-applying support plate (43) is directly connected to the tube body (41), and the force-bearing support plate (44) is connected to the tube body (41) via a connecting portion (45), and the thickness and width of the force-applying support plate (43) are smaller than those of the force-bearing support plate (44).

9. A high-strength plate structure and a preparation process thereof according to claim 8, characterized in that: A pull rod (5) is arranged in the tube body (41), and the pull rod (5) is composed of a plurality of sections, wherein the middle section is a connecting rod (51) and the two ends are adjusting rods (52); the connecting rod (51) comprises a connecting rod body (511), and connecting screw rods (512) are arranged at both ends of the connecting rod body (511), and the screw threads of the connecting screw rods (512) at the two ends are in opposite directions; the adjusting rods (52) at the two ends comprise an adjusting rod body (521), and an adjusting screw rod (522) is arranged at one end of the adjusting rod body (521), and an adjusting hole (523) is arranged on the end surface of the adjusting screw rod (522), and an adjusting rod threaded hole (524) is also arranged at the other end of the adjusting rod body (521).

10. A high-strength plate structure and a preparation process thereof according to claim 9, characterized in that: The two ends of the pull rod (5) are threadedly connected with locking members (6), the outer side of the locking member (6) is provided with external teeth (61), the interior is a hollow structure, the inner side is provided with internal teeth (62), and one side of the interior is also provided with a locking member adjustment hole (63) for adjustment; the connecting rod (51) is threadedly connected and installed with the adjusting rod threaded hole (524) of the adjusting rod (52) through the connecting screw (512), the adjusting rod (52) is threadedly connected to the internal teeth (62) of the locking member (6) through the adjusting screw (522), the adjusting rod (52) can be adjusted through threads in the locking member (6), and the external teeth (61) of the locking member (6) is threadedly connected and installed on the locking screw (42) of the straightener (4).

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