A waterproof density board and its preparation process

Abstract

The present invention discloses a waterproof density board and a preparation process thereof, and belongs to the technical field of waterproof density board preparation. The waterproof density board and the preparation process thereof include weighing raw materials in parts by weight according to the following formula: 8-9 parts of wood fiber, 8-15 parts of adhesive, 2-5 parts of waterproof agent, and 1-3 parts of other additives. The specific preparation process is as follows: Step 1: Select 8.5 parts of high-quality wood fiber, 11.5 parts of adhesive and 2 parts of flame retardant, and the wood fiber is crushed and sieved to obtain fiber particles. The present invention realizes the automatic production of waterproof density board by adopting a bonding mechanism, a coating mechanism and an extrusion molding mechanism, and a waterproof layer can be added to the middle part of the density board during the production process, which is a one-time treatment, simplifies the production process, avoids subsequent additional waterproofing treatment steps, improves production efficiency, and effectively reduces the intrusion of moisture into the board, thereby reducing the risk of deformation, expansion or damage of the board in a humid environment.

Description

Technical Field

[0001] The invention belongs to the technical field of waterproof density board preparation, and specifically relates to a waterproof density board and a preparation process thereof. Background Art

[0002] Waterproof density board is a density board with enhanced waterproof performance during the manufacturing process. This type of board combines the excellent processing performance of density board with excellent waterproof characteristics. It is widely used in environments where water resistance is required. In humid environments or high humidity areas, ordinary density boards are prone to moisture absorption and expansion. Waterproof density boards can effectively prevent this phenomenon and maintain the stability and comfort of the indoor environment. The waterproof density board has excellent moisture-proof properties and can significantly extend the service life of the board, reduce the need for maintenance and replacement, and thus reduce long-term use costs.

[0003] In the preparation of waterproof density boards, waterproof coatings are often applied to the surface of the density boards after they are formed. However, the coatings require additional drying time, which affects production efficiency. In addition, the coatings have insufficient adhesion to the density boards, which may cause the boards to peel off or fall off easily. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a waterproof density board and a preparation process thereof.

[0005] The technical solution adopted to solve the above technical problems is: a preparation process of a waterproof density board, comprising weighing the following raw materials by weight: 8-9 parts of wood fiber, 8-15 parts of adhesive, 2-5 parts of waterproofing agent, and 1-3 parts of other additives. The specific preparation process is as follows:

[0006] Step 1: 8.5 parts of high-quality wood fiber, 11.5 parts of adhesive and 2 parts of flame retardant are selected, and the wood fiber is crushed and sieved to obtain fiber particles;

[0007] Step 2: Select 3.5 parts of waterproofing agent and mix it with wood fiber and adhesive thoroughly;

[0008] Step 3: Put the mixed fiber and adhesive into the mold for preliminary shaping;

[0009] Step 4: Place the formed sheet into a hot press, apply a waterproof layer to the sheet, and press it under high temperature and high pressure conditions;

[0010] Step 5: Cool the hot-pressed sheet and then perform trimming, such as cutting and grinding, to achieve the final size and surface smoothness;

[0011] The hot press comprises two first conveying racks and one second conveying rack, the two first conveying racks are fixedly connected to the second conveying rack, and the two first conveying racks and the second conveying rack are arranged in a T-shaped structure, a bonding mechanism is fixedly connected to one side of the connection between the second conveying rack and one of the first conveying racks, and an extrusion molding mechanism is fixedly connected to the middle of the second conveying rack, and a coating mechanism is arranged in the middle of the two first conveying racks.

[0012] Through the above technical solution, the waterproofing treatment reduces the impact of moisture on the board and reduces the risk of warping or cracking caused by moisture changes.

[0013] Furthermore, the bonding mechanism includes an H-shaped fixing frame, which is fixedly connected to the first conveying frame and the second conveying frame, a first motor is installed in the middle of the H-shaped fixing frame, an output end of the first motor is rotatably connected to the H-shaped fixing frame, a disc is rotatably connected to the side of the middle of the H-shaped fixing frame away from the first motor, the through end of the first motor is fixedly connected to the disc, a Z-rod is fixedly connected to the eccentric part of the other side of the disc, and a square slider is rotatably connected to the other end of the Z-rod.

[0014] Furthermore, the H-shaped fixing frame is fixedly connected to a fixing plate at a side away from the first motor, and a first swinging plate is rotatably connected to the center of the fixing plate, a sliding groove is provided on one side of the first swinging plate, the square slider is located in the sliding groove of the first swinging plate, and the first swinging plate limits the square slider, the second swinging plate connecting shaft is rotatably connected to the fixing plate through the through end, the second swinging plate connecting shaft is fixedly connected to the first swinging plate, the square slider is slidably connected to the first swinging plate, a U-shaped groove is provided at the center of a side of the fixing plate away from the H-shaped fixing frame, one end of the U-shaped groove is located at the top of the center line of the first conveying frame, and the other end of the U-shaped groove is located at the top of the center line of the second conveying frame, and slide rails are provided at the top and bottom of the U-shaped groove, and the slide rails are welded and fixed to the fixing plate.

[0015] Through the above technical solution, less maintenance requirements are required due to its waterproof properties, reducing the maintenance or replacement work required due to moisture damage.

[0016] Furthermore, a cross slide is slidably connected inside the slide rail, a slide rod is slidably connected between the two cross slides, a second swing plate is rotatably connected to the middle of the fixed plate, a slide groove is penetrated through one side of the second swing plate, a circular slider is arranged in the slide groove of the second swing plate, the circular slider is slidably connected to the second swing plate, and the other end of the circular slider is located in the U-shaped groove, the circular slider is slidably connected to the fixed plate, one end of the circular slider away from the second swing plate is rotatably connected to the slide rod, a suction cup is installed at the bottom end of the slide rod, a through hole is penetrated between the top and bottom ends of the slide rod, and the through hole is connected to the suction cup.

[0017] Furthermore, the paint mechanism includes a plurality of paint fixing racks, wherein the plurality of paint fixing racks are fixedly connected to the first conveying rack in pairs, a sliding block is slidably connected inside the paint fixing rack, two loading roller shafts are arranged between two of the paint fixing racks, the two loading roller shafts are rotatably connected to the sliding block and the first conveying rack respectively, a worm is rotatably connected to one side of the first conveying rack, and worm wheels are transmission-connected to the top and bottom sides of the worm, and the two worm wheels are arranged opposite to each other.

[0018] Through the above technical solution, it can be completed in one go during the production process without the need for subsequent on-site processing or additional waterproofing measures, thereby improving production efficiency and construction convenience.

[0019] Furthermore, the worm gear connecting shaft located at the top is rotatably connected to the sliding block, and the through end of the worm gear connecting shaft is fixedly connected to one of the feeding roller shafts, the worm gear connecting shaft located at the bottom is rotatably connected to the first conveying frame, and the through end of the worm gear connecting shaft is fixedly connected to the other feeding roller shaft, a second motor is provided on one side of the worm, the second motor is fixedly installed on the first conveying frame, and the output end of the second motor is rotatably connected to the first conveying frame, and the through end of the second motor is fixedly connected to the worm.

[0020] Furthermore, a spring column is fixedly connected to the top surface of the sliding block, and the other end of the spring column is rotatably connected to a first handle, and the other end of the first handle is threadedly connected to a paint fixing frame, and a first loading box is provided at the bottom of one of the loading roller shafts located at the bottom, and the first loading box is installed and fixed to the first conveying frame, and the loading roller shaft is located inside the first loading box, and a second loading box is installed between the other two paint fixing frames.

[0021] The above technical solution can help maintain the structural integrity of the density board and reduce internal structural damage caused by environmental changes during long-term use.

[0022] Furthermore, the extrusion molding mechanism includes two connecting frames, the connecting frame is fixedly connected to the second conveying frame, the second conveying frame is rotatably connected to a gear column on one side, the top and bottom of the gear column are transmission-connected to a gear disk, the gear disk connecting shaft at the bottom is rotatably connected to the second conveying frame, and the connecting shaft through-end at the bottom is fixedly connected to the conveying roller shaft inside the second conveying frame, the connecting frame is slidably connected to a sliding box body inside, and the connecting frame limits the sliding box body.

[0023] Furthermore, a first bevel gear is rotatably connected to one side of the interior of the sliding box, and second bevel gears are transmission-connected to both sides of the first bevel gear, a connecting rod is rotatably connected between the two second bevel gears, and the through end of the connecting rod is fixedly connected to the inner wall of the sliding box, and a third bevel gear is transmission-connected to the side of the two second bevel gears away from the first bevel gears, and the third bevel gear is rotatably connected to the inner wall of the sliding box, and a second handle is rotatably connected to the top surface of the sliding box, and the other end of the second handle is threadedly connected to the connecting frame.

[0024] Furthermore, the geared connecting shaft at the top is rotatably connected to the sliding box, and the through end of the geared connecting shaft at the top is fixedly connected to the first bevel gear, a hot pressing roller shaft is rotatably connected between the two sliding boxes, the connecting shaft of the hot pressing roller shaft is rotatably connected to the sliding box, and the through end of the hot pressing roller shaft connecting shaft is fixedly connected to the third bevel gear.

[0025] Through the above technical solution, plates of different thicknesses can be produced and used according to actual needs, which helps to reduce material waste in the production process and improve resource utilization efficiency.

[0026] The beneficial effects of the present invention are as follows: (1) The present invention adopts a bonding mechanism, and the first motor rotates to drive the circular disk and the Z-shaped rod to rotate synchronously. Since the square slider is connected to the Z-shaped rod in rotation, the Z-shaped rod can make the square slider move back and forth in the slide groove of the first swing plate when the Z-shaped rod rotates, and at the same time, the first swing plate makes a left-right swing motion. When the first swing plate swings back and forth, it synchronously drives the second swing plate to swing back and forth, thereby making the circular slider slide in the slide groove and the U-shaped groove of the second swing plate at the same time, prompting the slide rod to move synchronously with the circular slider, so that the suction cup can absorb and pick up the plate coated on the bottom, overlap the two plates, and form an isolation layer between the two surfaces to enhance the waterproof effect and prevent moisture from invading from any surface. In addition, the two surfaces are treated at one time, which simplifies the production process, avoids the subsequent additional waterproofing treatment steps, and improves the production efficiency.

[0027] (2) The present invention adopts a coating mechanism. The operation of the second motor drives the worm to rotate, and then drives the worm wheels on both sides to rotate, so that the two feeding rollers rotate in opposite directions. When the plate passes between the two feeding rollers, the waterproof coating in the feeding box adheres to the feeding rollers and is applied to the surfaces of the two plates in different directions, thereby effectively extending the service life of the plate, especially in a humid environment, reducing the need for replacement and maintenance. In addition, by rotating the first handle to change the position relationship of the sliding block, a worm wheel connected to it moves up and down, which can adapt to plates of different thicknesses;

[0028] (3) The present invention adopts an extrusion molding mechanism. The second conveyor frame operates to move the two overlapped plates to the hot pressing roller shaft. The conveying roller shaft inside the second conveyor frame drives a gear plate to rotate. Under the action of the gear column, the top gear plate rotates at the same time, thereby rotating the first bevel gear. Under the action of the two second bevel gears, the third bevel gear rotates in the opposite direction, thereby pressurizing the two overlapped plates to ensure that the pressure is evenly distributed on the surface of the plates, avoiding local overpressure or underpressure, and improving the molding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0030] Figure 2 is a schematic diagram of the structure of the present invention from a second viewing angle;

[0031] Figure 3 It is a third perspective structural schematic diagram of the present invention;

[0032] Figure 4 is a schematic diagram of the structure from a fourth viewing angle of the present invention;

[0033] Figure 5 It is a schematic structural diagram of the bonding mechanism of the present invention from a first viewing angle;

[0034] Figure 6 is a schematic structural diagram of the bonding mechanism of the present invention from a second viewing angle;

[0035] Figure 7 is a schematic structural diagram of the bonding mechanism of the present invention from a third viewing angle;

[0036] Figure 8 It is a schematic diagram of the structure of the connection between the disc and the Z-shaped rod of the present invention;

[0037] Fig. 9 It is a schematic structural diagram of the connection between the second swing plate and the circular slider of the present invention;

[0038] Fig.10 yes Figure 3 A schematic diagram of the enlarged structure at B;

[0039] Fig.11 It is a schematic diagram of the internal structure of the sliding box of the present invention;

[0040] Fig.12 yes Figure 2 A is an enlarged structural diagram of FIG.

[0041] Figure numerals: 1, first conveyor frame; 2, second conveyor frame; 3, bonding mechanism; 4, coating mechanism; 5, extrusion molding mechanism; 31, H-shaped fixing frame; 32, first motor; 33, disc; 34, Z-shaped rod; 35, square slider; 36, first swing plate; 37, fixing plate; 38, slide rail; 39, cross slide plate; 310, U-shaped groove; 311, slide rod; 312, suction cup; 313, through hole; 314, second swing plate; 315, round slide Block; 41, paint fixing frame; 42, sliding block; 43, spring column; 44, first handle; 45, worm gear; 46, first feeding box; 47, worm; 48, second motor; 49, feeding roller; 410, second feeding box; 51, gear column; 52, gear plate; 53, hot pressing roller; 54, connecting frame; 55, sliding box; 56, second handle; 57, first bevel gear; 58, second bevel gear; 59, connecting rod; 510, third bevel gear. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] like Figure 1-Figure 12 As shown, a preparation process of a waterproof density board of this embodiment includes weighing the following raw materials by weight: 8-9 parts of wood fiber, 8-15 parts of adhesive, 2-5 parts of waterproofing agent, and 1-3 parts of other additives. The specific preparation process is as follows:

[0044] Step 1: 8.5 parts of high-quality wood fiber, 11.5 parts of adhesive and 2 parts of flame retardant are selected, and the wood fiber is crushed and sieved to obtain fiber particles;

[0045] Step 2: Select 3.5 parts of waterproofing agent and mix it with wood fiber and adhesive thoroughly;

[0046] Step 3: Put the mixed fiber and adhesive into the mold for preliminary shaping;

[0047] Step 4: Place the formed sheet into a hot press, apply a waterproof layer to the sheet, and press it under high temperature and high pressure conditions;

[0048] Step 5: Cool the hot-pressed sheet and then perform trimming, such as cutting and grinding, to achieve the final size and surface smoothness;

[0049] like Figure 2-Figure 9As shown, the hot press comprises two first conveying frames 1 and a second conveying frame 2, the two first conveying frames 1 are fixedly connected to the second conveying frames 2, and the two first conveying frames 1 and the second conveying frames 2 are arranged in a T-shaped structure, and a bonding mechanism 3 is fixedly connected to one side of the connection between the second conveying frame 2 and one of the first conveying frames 1, and the bonding mechanism 3 comprises an H-shaped fixing frame 31, and the H-shaped fixing frame 31 is fixedly connected to the first conveying frame 1 and the second conveying frame 2, and a first motor 32 is installed in the middle of the H-shaped fixing frame 31, and the output end of the first motor 32 is connected to the H-shaped fixing frame 31 through rotation, and a fixing plate 37 is fixedly connected to the side of the H-shaped fixing frame 31 away from the first motor 32, and the fixing plate 37 is fixedly connected to the fixing plate 37. The first swing plate 36 is rotatably connected to the center of the first swing plate 37, and a slide groove is provided on one side of the first swing plate 36. The square slider 35 is located in the slide groove of the first swing plate 36, and the first swing plate 36 limits the square slider 35. The square slider 35 is slidably connected to the first swing plate 36. The second swing plate 314 connecting shaft is rotatably connected to the fixed plate 37 through the second swing plate 314 connecting shaft through the first swing plate 36 is fixedly connected. The waterproof treatment reduces the influence of moisture on the plate and reduces the risk of warping or cracking caused by moisture changes. A U-shaped groove 310 is provided at the center of the fixed plate 37 away from the H-shaped fixing frame 31. One end of the U-shaped groove 310 is located at the first conveying The top of the center line of the frame 1, and the other end of the U-shaped groove 310 is located at the top of the center line of the second conveying frame 2, the top and bottom of the U-shaped groove 310 are provided with a slide rail 38, and a cross slide plate 39 is slidably connected inside the slide rail 38, and a slide rod 311 is slidably connected between the two cross slide plates 39, and a second swing plate 314 is rotatably connected to the middle of the fixed plate 37, and a slide groove is opened on one side of the second swing plate 314, which has less maintenance requirements. Due to its waterproof characteristics, the maintenance or replacement work required due to moisture damage is reduced. A circular slider 315 is provided in the slide groove of the second swing plate 314, and the circular slider 315 is slidably connected to the second swing plate 314, and the other side of the circular slider 315 One end is located in the U-shaped groove 310, the circular slider 315 is slidably connected to the fixed plate 37, the end of the circular slider 315 away from the second swing plate 314 is rotatably connected to the slide rod 311, a suction cup 312 is installed at the bottom end of the slide rod 311, a through hole 313 is penetrated between the top and bottom ends of the slide rod 311, and the through hole 313 is connected to the suction cup 312, the slide rail 38 is welded and fixed to the fixed plate 37, a side of the middle part of the H-shaped fixing frame 31 away from the first motor 32 is rotatably connected to the disk 33, the through end of the first motor 32 is fixedly connected to the disk 33, the other side of the disk 33 is fixedly connected to the eccentric part with a Z-shaped rod 34, and the other end of the Z-shaped rod 34 is rotatably connected to the square slider 35;

[0050] like Figure 4-Figure 11As shown, an extrusion molding mechanism 5 is fixedly connected to the middle of the second conveying frame 2, and the extrusion molding mechanism 5 includes two connecting frames 54, the connecting frame 54 is fixedly connected to the second conveying frame 2, and a gear column 51 is rotatably connected to one side of the second conveying frame 2. The top and bottom of the gear column 51 are transmission-connected with a gear disc 52, which can be completed at one time during the production process without the need for subsequent on-site processing or additional waterproofing measures, thereby improving production efficiency and construction convenience. The connecting shaft of the gear disc 52 at the top is rotatably connected to the sliding box body 55, and the through-end of the connecting shaft of the gear disc 52 at the top is fixedly connected to the first bevel gear 57. A hot pressing roller shaft 53 is rotatably connected between the two sliding boxes 55, and the connecting shaft of the hot pressing roller shaft 53 is rotatably connected to the sliding box body 55, and the through-end of the connecting shaft of the hot pressing roller shaft 53 is fixedly connected to the third bevel gear 510. The connecting shaft of the gear disc 52 at the bottom is rotatably connected to the second conveying frame 2, and the through-end of the connecting shaft at the bottom is connected to the inside of the second conveying frame 2 The conveying roller is fixedly connected, and a sliding box 55 is slidably connected inside the connecting frame 54, which can help maintain the structural integrity of the density board and reduce the damage to the internal structure caused by environmental changes during long-term use. A first bevel gear 57 is rotatably connected to one side of the sliding box 55, and second bevel gears 58 are transmission-connected to both sides of the first bevel gear 57. A connecting rod 59 is rotatably connected between the two second bevel gears 58, and the through end of the connecting rod 59 is fixedly connected to the inner wall of the sliding box 55. The two second bevel gears 58 are transmission-connected to the side away from the first bevel gear 57 with a third bevel gear 510, and the third bevel gear 510 is rotationally connected to the inner wall of the sliding box 55. A second handle 56 is rotatably connected to the top surface of the sliding box 55, and the sliding box 55 can be driven by rotating the second handle 56 to move up and down to change the molding density of the density board. The other end of the second handle 56 is threadedly connected to the connecting frame 54, and the connecting frame 54 limits the sliding box 55.

[0051] like Fig.12As shown, a coating mechanism 4 is arranged in the middle of the two first conveying frames 1, and the coating mechanism 4 includes a plurality of coating fixing frames 41, and the plurality of coating fixing frames 41 are fixedly connected to the first conveying frame 1 in pairs, and a sliding block 42 is slidably connected inside the coating fixing frame 41, and a spring column 43 is fixedly connected to the top surface of the sliding block 42, and the other end of the spring column 43 is rotatably connected to a first handle 44, and the other end of the first handle 44 is threadedly connected to the coating fixing frame 41, and a first loading box 46 is arranged at the bottom of one of the loading roller shafts 49 located at the bottom, and the first loading box 46 is installed and fixed to the first conveying frame 1, and the loading roller shaft 49 is located inside the first loading box 46, and a second loading box 410 is installed between the other two coating fixing frames 41, which can produce and use plates of different thicknesses according to actual needs, which helps to reduce material waste in the production process and improve resource utilization efficiency. Two loading roller shafts 49 are arranged between the two coating fixing frames 41, and when the plate passes between the two loading roller shafts 49, under the action of the spring column 43 , the plate can always be kept in contact with the two feeding roller shafts 49, and the position relationship of the sliding block 42 can be changed by rotating the first handle 44, so that a worm gear 45 connected thereto can be moved up and down to adapt to plates of different thicknesses. The two feeding roller shafts 49 are rotatably connected to the sliding block 42 and the first conveyor frame 1 respectively. A worm 47 is rotatably connected to one side of the first conveyor frame 1, and worm wheels 45 are transmission-connected to the top and bottom sides of the worm 47. The two worm wheels 45 are arranged opposite to each other. The connecting shaft of the worm wheel 45 at the top is rotatably connected to the sliding block 42, and the through end of the connecting shaft of the worm wheel 45 is fixedly connected to one of the feeding roller shafts 49, the connecting shaft of the worm wheel 45 at the bottom is rotatably connected to the first conveyor frame 1, and the through end of the connecting shaft of the worm wheel 45 is fixedly connected to the other feeding roller shaft 49, and a second motor 48 is arranged on one side of the worm 47, the second motor 48 is fixedly installed on the first conveyor frame 1, and the output end of the second motor 48 is rotatably connected to the first conveyor frame 1, and the through end of the second motor 48 is fixedly connected to the worm 47.

[0052] The working principle of this embodiment is as follows: before hot pressing, the waterproof coating is poured into the second loading box 410 and the first loading box 46 respectively, and then the hot press is started to put the formed plates into the first conveyor racks 1 on both sides respectively. Under the action of the first conveyor rack 1, the plates on both sides move toward each other. When the plates on one side move between the two loading rollers 49, the second motor 48 drives the worm 47 to rotate, and then drives the worm gears 45 on both sides to rotate, so that the two loading rollers 49 rotate toward each other. When the plates pass between the two loading rollers 49, the waterproof coating in the second loading box 410 on one side falls onto the top loading roller 49 under the action of gravity, thereby applying the upper plate surface of the plates, and the loading roller 49 at the bottom of the first conveyor rack 1 on the other side rotates to roll up the waterproof coating in the first loading box 46 and attach it to its surface, thereby applying the bottom of the plates on the other side.

[0053] When the plate coated on the upper plate surface slides onto the second conveyor 2 after coating, and the plate coated on the bottom of the other side moves to the side close to the second conveyor 2, the first motor 32 rotates to drive the circular disc 33 and the Z-shaped rod 34 to rotate synchronously. Since the square slider 35 is rotatably connected with the Z-shaped rod 34, the Z-shaped rod 34 can make the square slider 35 move back and forth in the slide groove of the first swing plate 36 when rotating, and at the same time, make the first swing plate 36 swing left and right. When the first swing plate 36 swings back and forth, it synchronously drives the second swing plate 314 to swing back and forth, so that the circular slider 315 slides in the slide groove of the second swing plate 314 and the U-shaped groove 310 at the same time, prompting the slide bar 311 to move synchronously with the circular slider 315, so that the suction cup 312 can absorb and pick up the plate coated on the bottom, and the two plates are overlapped;

[0054] Then the second conveyor frame 2 is operated to move the two overlapped plates to the hot pressing roller 53, and the conveying roller inside the second conveyor frame 2 drives a gear plate 52 to rotate. Under the action of the gear column 51, the top gear plate 52 rotates at the same time, thereby rotating the first bevel gear 57, and under the action of the two second bevel gears 58, the third bevel gear 510 rotates in the opposite direction, so that the two overlapped plates are pressurized and formed.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A process for preparing a waterproof density board, characterized in that: The method comprises weighing the following raw materials in parts by weight: 8-9 parts of wood fiber, 8-15 parts of adhesive, 2-5 parts of waterproofing agent, and 1-3 parts of flame retardant. The specific preparation process is as follows: Step 1: 8.5 parts of high-quality wood fiber, 11.5 parts of adhesive and 2 parts of flame retardant are selected, and the wood fiber is crushed and sieved to obtain fiber particles; Step 2: Select 3.5 parts of waterproofing agent and mix it with wood fiber and adhesive thoroughly; Step 3: Put the mixed fiber and adhesive into the mold for preliminary shaping; Step 4: Place the formed sheet into a hot press, apply a waterproof layer to the sheet, and press it under high temperature and high pressure conditions; Step 5: Cool the hot-pressed sheet and then perform trimming, such as cutting and grinding, to achieve the final size and surface smoothness; The hot press comprises two first conveying racks (1) and a second conveying rack (2), the two first conveying racks (1) are fixedly connected to the second conveying rack (2), and the two first conveying racks (1) and the second conveying rack (2) are arranged in a T-shaped structure, a bonding mechanism (3) is fixedly connected to one side of the connection between the second conveying rack (2) and one of the first conveying racks (1), and an extrusion molding mechanism (5) is fixedly connected to the middle of the second conveying rack (2), and a coating mechanism (4) is arranged in the middle of the two first conveying racks (1); The bonding mechanism (3) comprises an H-shaped fixing frame (31), the H-shaped fixing frame (31) being fixedly connected to the first conveying frame (1) and the second conveying frame (2), a first motor (32) being installed in the middle of the H-shaped fixing frame (31), an output end of the first motor (32) being rotatably connected to the H-shaped fixing frame (31), a disc (33) being rotatably connected to a side of the middle of the H-shaped fixing frame (31) away from the first motor (32), a through end of the first motor (32) being fixedly connected to the disc (33), a Z-shaped rod (34) being fixedly connected to an eccentric position on the other side of the disc (33), and a square slider (35) being rotatably connected to the other end of the Z-shaped rod (34); A fixed plate (37) is fixedly connected to the side of the H-shaped fixed frame (31) away from the first motor (32), and a first swing plate (36) is rotatably connected to the center of the fixed plate (37). A sliding groove is provided on one side of the first swing plate (36), and the square slider (35) is located in the sliding groove of the first swing plate (36), and the first swing plate (36) limits the square slider (35). The square slider (35) is slidably connected to the first swing plate (36). A U-shaped groove (310) is provided at the center of the side of the fixed plate (37) away from the H-shaped fixed frame (31), one end of the U-shaped groove (310) is located at the top of the center line of the first conveying frame (1), and the other end of the U-shaped groove (310) is located at the top of the center line of the second conveying frame (2). Slide rails (38) are provided at the top and bottom of the U-shaped groove (310), and the slide rails (38) are welded and fixed to the fixed plate (37); A cross slide (39) is slidably connected inside the slide rail (38), a slide rod (311) is slidably connected between the two cross slides (39), a second swing plate (314) is rotatably connected to the middle of the fixed plate (37), a connecting shaft of the second swing plate (314) is rotatably connected to the fixed plate (37), a through end of the connecting shaft of the second swing plate (314) is fixedly connected to the first swing plate (36), a sliding groove is opened through one side of the second swing plate (314), and a circular slider (314) is arranged in the sliding groove of the second swing plate (314). 15), the circular slider (315) is slidably connected to the second swing plate (314), and the other end of the circular slider (315) is located in the U-shaped groove (310), the circular slider (315) is slidably connected to the fixed plate (37), one end of the circular slider (315) away from the second swing plate (314) is rotatably connected to the slide rod (311), a suction cup (312) is installed at the bottom end of the slide rod (311), a through hole (313) is opened between the top and bottom ends of the slide rod (311), and the through hole (313) is connected to the suction cup (312).

2. The process for preparing a waterproof density board according to claim 1, characterized in that: The coating mechanism (4) comprises a plurality of coating fixing frames (41), wherein the plurality of coating fixing frames (41) are fixedly connected to the first conveying frame (1) in pairs, wherein a sliding block (42) is slidably connected inside the coating fixing frames (41), wherein two loading roller shafts (49) are arranged between the two coating fixing frames (41), wherein the two loading roller shafts (49) are rotatably connected to the sliding block (42) and the first conveying frame (1) respectively, wherein a worm (47) is rotatably connected to one side of the first conveying frame (1), wherein the top and bottom sides of the worm (47) are transmission-connected to worm wheels (45), and the two worm wheels (45) are arranged opposite to each other.

3. The process for preparing a waterproof density board according to claim 2, characterized in that: The worm gear (45) connecting shaft at the top is rotatably connected to the sliding block (42), and the through end of the worm gear (45) connecting shaft is fixedly connected to one of the feeding roller shafts (49). The worm gear (45) connecting shaft at the bottom is rotatably connected to the first conveying frame (1), and the through end of the worm gear (45) connecting shaft is fixedly connected to the other feeding roller shaft (49). A second motor (48) is provided on one side of the worm (47). The second motor (48) is fixedly installed on the first conveying frame (1), and the output end of the second motor (48) is rotatably connected to the first conveying frame (1), and the through end of the second motor (48) is fixedly connected to the worm (47).

4. The process for preparing a waterproof density board according to claim 2, characterized in that: A spring column (43) is fixedly connected to the top surface of the sliding block (42), and the other end of the spring column (43) is rotatably connected to a first handle (44). The other end of the first handle (44) is threadedly connected to a paint fixing frame (41). A first loading box (46) is arranged at the bottom of one of the loading roller shafts (49) at the bottom. The first loading box (46) is fixedly mounted on the first conveying frame (1), and the loading roller shaft (49) is located inside the first loading box (46). A second loading box (410) is installed between the other two paint fixing frames (41).

5. The process for preparing a waterproof density board according to claim 1, characterized in that: The extrusion molding mechanism (5) comprises two connecting frames (54), the connecting frames (54) being fixedly connected to the second conveying frame (2), one side of the second conveying frame (2) being rotatably connected to a tooth column (51), the top and bottom of the tooth column (51) being transmission-connected to toothed discs (52), the connecting shaft of the toothed disc (52) at the bottom being rotatably connected to the second conveying frame (2), and the through end of the connecting shaft at the bottom being fixedly connected to the conveying roller shaft inside the second conveying frame (2), the connecting frame (54) being slidably connected to a sliding box body (55), and the connecting frame (54) limiting the sliding box body (55).

6. The process for preparing a waterproof density board according to claim 5, characterized in that: A first bevel gear (57) is rotatably connected to one side of the sliding box (55), and second bevel gears (58) are transmission-connected to both sides of the first bevel gear (57). A connecting rod (59) is rotatably connected between the two second bevel gears (58), and the through end of the connecting rod (59) is fixedly connected to the inner wall of the sliding box (55). A third bevel gear (510) is transmission-connected to the side of the two second bevel gears (58) away from the first bevel gear (57), and the third bevel gear (510) is rotatably connected to the inner wall of the sliding box (55). A second handle (56) is rotatably connected to the top surface of the sliding box (55), and the other end of the second handle (56) is threadedly connected to the connecting frame (54).

7. The process for preparing a waterproof density board according to claim 6, characterized in that: The connecting shaft of the toothed disc (52) at the top is rotatably connected to the sliding box (55), and the through-end of the connecting shaft of the toothed disc (52) at the top is fixedly connected to the first bevel gear (57). A hot pressing roller shaft (53) is rotatably connected between the two sliding boxes (55). The connecting shaft of the hot pressing roller shaft (53) is rotatably connected to the sliding box (55), and the through-end of the connecting shaft of the hot pressing roller shaft (53) is fixedly connected to the third bevel gear (510).

Images