High-precision board blank paving device for shaving board

Abstract

According to the high-precision board blank paving device and method for the shaving board, firstly, sheet-shaped wood shavings are discharged out of a screening groove through cooperation of the screening groove and a roller, fine wood shavings pass through gaps, and primary separation of the wood shavings is achieved; and secondly, the wood shavings are further separated through the air blowing device, and finally the fine wood shavings are conveyed on the first conveying belt, and the sheet-shaped wood shavings are conveyed on the second conveying belt. In this way, the lower layer of the fine wood shavings is laid through the first conveying belt, then the sheet-shaped wood shaving layer (core layer) is laid through the second conveying belt, the upper layer of the fine wood shavings is laid through the first conveying belt, and the composite multi-layer shaving board with the sheet-shaped wood shavings distributed inside and the fine wood shavings distributed outside is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of artificial board materials, and in particular to a high-precision slab paving device for particleboards. Background Art

[0002] Particleboard is one of the most commonly used man-made boards and is widely used in furniture manufacturing, interior decoration and other fields. In the production process of particleboard, the paving quality of the slab directly affects the performance of the finished product.

[0003] In the prior art, a particleboard slab paving device is used to spread the wood chips mixed with glue into a certain size, quantity, and uniform slab. The wood chips vary in size, some are complete in flakes, some are finely broken, and some are in powder form. In order to make the structure of the synthesized slab smooth and facilitate secondary processing such as veneer in the later stage, the particleboard slab is usually designed into multiple layers in the prior art, so that the flaky wood chips are distributed in the core layer of the slab and the finely broken wood chips are distributed in the surface layer of the slab. However, the existing wood chip sorting and paving equipment has a complex structure and high cost, which limits its application range. Summary of the Invention

[0004] In view of this, the embodiment of the present application provides a high-precision particleboard slab paving device to solve the problem of poor stratification of particleboard slabs in the background technology.

[0005] The high-precision particleboard slab laying device provided in the embodiment of the present application first utilizes the cooperation of a screening trough and a roller to discharge flaky wood chips from the screening trough, allowing fine wood chips to pass through the gaps, thereby achieving preliminary separation of the wood chips. Secondly, an air blowing device is used to further separate the wood chips, ultimately achieving the transmission of fine wood chips on a first conveyor belt and flaky wood chips on a second conveyor belt. In this way, the particleboard slab to be synthesized can first be laid with a lower layer of fine wood chips on the first conveyor belt, then with a layer of flaky wood chips on the second conveyor belt, and finally with an upper layer of fine wood chips on the first conveyor belt, achieving a multi-layer particleboard slab with flaky wood chips distributed on the inside and fine wood chips distributed on the outside.

[0006] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0008] Figure 1 A schematic diagram of the Y-direction projection of the high-precision particleboard slab paving device provided in an embodiment of the present application;

[0009] Figure 2 A schematic structural diagram of a high-precision particleboard slab paving device provided in an embodiment of the present application;

[0010] Figure 3 A schematic diagram of the screening tank structure provided in an embodiment of the present application;

[0011] Figure 4 Schematic diagram of the principle of the high-precision particleboard slab paving device provided in the embodiment of the present application;

[0012] Figure 5 A schematic diagram of the cross-sectional structure of a high-precision particleboard blank provided in an embodiment of the present application;

[0013] Figure 6 A schematic diagram of the structure of the leveling mechanism provided in an embodiment of the present application;

[0014] Figure 7 This is a schematic diagram of the drum structure provided in an embodiment of the present application.

[0015] The reference numerals in the figures are:

[0016] 1. Screw conveying device;

[0017] 2. Hopper;

[0018] 3. Feed chute; 31. Screening chute; 311. Gap;

[0019] 4. Drum; 41. Drum body; 42. Shrapnel;

[0020] 5. First guide plate;

[0021] 6. Blowing device;

[0022] 7. Second guide plate; 71. First guide surface; 72. Second guide surface;

[0023] 8. First conveyor belt;

[0024] 9. First scraper assembly;

[0025] 10. Second conveyor belt;

[0026] 11. Second scraper assembly;

[0027] 12. The third conveyor belt;

[0028] 13. Leveling mechanism; 131. Leveling frame;

[0029] 132, pressure rod;

[0030] 133. Transmission parts;

[0031] 134. Motor;

[0032] 14. Vibrating feeder;

[0033] 15. Driving machine;

[0034] 200, the lower layer of finely crushed wood shavings;

[0035] 300, flaky wood shavings layer;

[0036] 400, finely chopped wood shavings on the upper layer. DETAILED DESCRIPTION

[0037] To make the technical solutions and beneficial effects of the present invention more clearly understood, the following detailed description is given by way of specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly illustrate the details of the local features. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0038] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description of the present invention, and do not indicate that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and should not be understood as a limitation to the present invention.

[0039] In this disclosure, the terms "first" and "second" are used solely for descriptive purposes and should not be construed as indicating the relative importance of the features indicated or the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, and "several" means at least one, such as one, two, or three, unless otherwise specifically defined.

[0040] In the present invention, unless otherwise expressly defined, the terms "installed," "connected," "connect," "fixed," and "disposed" should be understood broadly. For example, "connection" can mean fixed, removable, or integrated; it can mean mechanical or electrical; it can mean direct or indirect connection through an intermediary; it can also mean internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0041] In the present invention, unless otherwise clearly defined, when a first feature is “on,” “above,” “above,” “above,” “below,” “below,” or “below” a second feature, the first feature and the second feature may be in direct contact, or the first feature and the second feature may be in indirect contact via an intermediate medium. Moreover, when a first feature is “on,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0042] The X direction, Y direction, or Z direction mentioned in this embodiment is based on a Cartesian coordinate system, that is, X, Y, and Z are perpendicular to each other. The X direction, Y direction, or Z direction includes a positive direction and a negative direction. If the positive direction or the negative direction is not clearly stated in the description, it should be understood that it can be either a positive direction or a negative direction.

[0043] In order to fully understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below. However, in addition to these detailed descriptions, the present application may also have other implementation methods.

[0044] like Figure 5 As shown, this embodiment pre-synthesizes a particleboard blank in which flaky wood chips are distributed in the core layer of the blank and fine wood chips are distributed in the surface layer of the blank. The particleboard blank is divided into a lower layer 200 of fine wood chips, a flaky wood chip layer 300, and an upper layer 400 of fine wood chips from bottom to top. Among them, the lower layer 200 of fine wood chips and the upper layer 400 of fine wood chips are both formed by laying fine wood chips, and the flaky wood chip layer 300 is located in the innermost layer of the particleboard blank and is formed by laying flaky wood chips. The above-mentioned flaky wood chips and fine wood chips refer to a relatively complete part and another relatively fine wood chip of the raw wood chips. In this embodiment, a screening trough 31 and a blowing device 6 are used to screen the wood chips during the falling process of the wood chips. A part of the screened wood chips is regarded as the fine wood chips in this embodiment, and the other part is regarded as flaky wood chips. It is understandable that during the actual screening process of wood chips, there will inevitably be occasional flaky wood chips falling into the position of fine wood chips, or fine wood chips falling into the position of flaky wood chips. Therefore, in this embodiment, the wood chips are not divided into types according to their actual weight, area or volume. Only the position where the wood chips fall after screening by the screening trough 31 and the blowing device 6 is used as the classification standard to distinguish the types of wood chips in this embodiment.

[0045] like Figure 1 As shown, this embodiment provides a high-precision particleboard slab paving device, such as Figure 1 、 Figure 2As shown, it includes: a feed trough 3, a roller 4, a blowing device 6, a first conveyor belt 8, and a second conveyor belt 10.

[0046] The feed trough 3 is used to receive the flaky wood chips or fine wood chips discharged from the hopper 2; the feed trough 3 includes a screening trough 31, the bottom plate of the screening trough 31 is arc-shaped, such as Figure 3 As shown, a plurality of slits 311 or openings are provided on the bottom plate of the screening trough 31 ; the slits 311 or openings can allow the finely chopped wood shavings to pass through.

[0047] The drum 4 is mounted within the screening trough 31 and is driven by the drive motor 15 to rotate. Wood chips in the feed trough 3 can enter between the drum 4 and the bottom plate of the screening trough 31. As the drum 4 rotates, they move along the bottom plate and are discharged from the discharge end of the screening trough 31. Driven by the drum 4, flaky wood chips are more likely to pass through the screening trough 31, while finer wood chips tend to leak through the gaps 311 or openings and fall downward, achieving a preliminary screening of the wood chips.

[0048] The blowing device 6 is used for blowing air in the positive direction along the X direction and is arranged on one side of the discharge end of the screening tank 31. Figure 4 As shown, under the action of the wind from the blowing device 6, the wood chips discharged from the discharge end of the screening chute 31 are subjected to a positive force in the X direction. Relatively fine wood chips are more easily affected by this force and thus fall onto the first conveyor belt 8, while relatively flaky wood chips are less easily affected by this force and are more likely to fall onto the second conveyor belt 10. This achieves a second screening of the wood chips.

[0049] The first conveyor belt 8 is at least partially located below the screening trough 31 along the Z direction, and is used to receive the fine shavings passing through the gaps 311 or openings, as well as the fine shavings discharged from the screening trough 31 and subjected to the force of the blowing device 6 .

[0050] The second conveyor belt 10 is used to receive the flaky wood chips discharged from the screening trough 31; the projection of the second conveyor belt 10 along the Z direction is at least partially located on the side opposite to the projection of the first conveyor belt 8 along the Z direction in the X direction, so as to be staggered with the first conveyor belt 8 to facilitate the collection of the flaky wood chips discharged from the screening trough 31.

[0051] The high-precision particleboard slab paving device provided in the embodiment of the present application first utilizes the cooperation of the screening trough 31 and the roller 4 to discharge the flaky wood chips from the screening trough 31, allowing the fine wood chips to pass through the gap 311, thereby achieving preliminary separation of the wood chips; secondly, the blowing device 6 is used to further separate the wood chips, ultimately achieving the transmission of the fine wood chips on the first conveyor belt 8 and the transmission of the flaky wood chips on the second conveyor belt 10. In this way, the particleboard to be synthesized is first laid with a lower layer 200 of fine wood chips via the first conveyor belt 8, then with a layer 300 of flaky wood chips via the second conveyor belt 10, and finally with an upper layer 400 of fine wood chips via the first conveyor belt 8, thereby achieving a multi-layer particleboard slab with the flaky wood chips distributed on the inside and the fine wood chips distributed on the outside.

[0052] In an optional embodiment, if Figure 1 、 Figure 2 As shown, the high-precision particleboard slab laying device of this embodiment further includes a first guide plate 5. The first guide plate 5 has a first side connected to the discharge end of the screening chute 31 and a second side extending in the opposite direction of the X-direction and downward in the Z-direction, the second side being opposite to the first side. In this embodiment, the extension of the first guide plate 5 causes the shavings discharged from the discharge end of the screening chute 31 to slide along it and be transferred to a position farther away from the screening chute 31 in the X-direction, thereby separating the shavings into two piles.

[0053] In an optional embodiment, if Figure 1 、 Figure 2 、 Figure 4 As shown, the high-precision particleboard slab laying device also includes a second guide plate 7; along the Z direction, the upper end of the second guide plate 7 is located below the second side of the first guide plate 5. The second guide plate 7 includes a first guide surface 71 and a second guide surface 72; the first guide surface 71 extends along the X and Z directions and is used to guide the particles above it in the Z direction to the first conveyor belt 8; the second guide surface 72 extends along the Z direction and is used to guide the particles on the opposite side of it in the X direction to the second conveyor belt 10. In this embodiment, the function of the second guide plate 7 is to better disperse the particles after being acted upon by the blowing device 6, so that the fine particles and flaky particles are better guided to the first conveyor belt 8 and the second conveyor belt 10, respectively.

[0054] In an optional embodiment, if Figure 1 、 Figure 2As shown, the particleboard high-precision slab paving device also includes a first scraper assembly 9 and a second scraper assembly 11. The first scraper assembly 9 is used to level the wood shavings transported on the first conveyor belt 8, and the second scraper assembly 11 is used to level the wood shavings transported on the second conveyor belt 10. In this embodiment, by setting the first scraper assembly 9 and the second scraper assembly 11, the piles of wood shavings transported on the first conveyor belt 8 and the second conveyor belt 10 can be spread as flat as possible on the conveyor belt surface. Optionally, the first scraper assembly 9 and the second scraper assembly 11 include a scraper body and a lifting mechanism. The scraper body is plate-shaped and arranged parallel to the conveyor belt surface. The height difference between the scraper body and the conveyor belt surface is the thickness of the wood shavings layer. The lifting mechanism is used to drive the scraper body to rise and fall to change the height difference, that is, the thickness of the wood shavings layer is controllable.

[0055] In an optional embodiment, if Figure 1 、 Figure 2 As shown, the high-precision particleboard slab paving device also includes a third conveyor belt 12, which is located below the first conveyor belt 8 and the second conveyor belt 10 along the Z direction. The third conveyor belt 12 is used for forward or reverse transmission along the X direction, so that the shavings transported by the first conveyor belt 8 and the second conveyor belt 10 fall onto its surface. In this embodiment, the third conveyor belt 12 is arranged below the first conveyor belt 8 and the second conveyor belt 10 along the Z direction, which can conveniently receive the shavings scattered by the first conveyor belt 8 and the second conveyor belt 10. Since the fine shavings need to be laid in two layers, the third conveyor belt 12 is configured to be able to transport in the forward or reverse direction along the X direction and return after passing through the first conveyor belt 8 to perform a second layer of fine shavings laying.

[0056] Understandably, Figure 2 As shown, in order to prevent the transported wood chips from leaking in the Y direction, baffles should be provided on both sides of the Y direction in the high-precision particleboard slab paving device of this embodiment. For example, baffles are provided on both sides of the first guide plate 5, the second guide plate 7, the first conveyor belt 8, the second conveyor belt 10, and the third conveyor belt 12 in the Y direction. In order to control the transmission of the first conveyor belt 8, the second conveyor belt 10, and the third conveyor belt 12, the driving devices used to drive them can be individually controlled to switch on and off, and rotate forward or reverse.

[0057] In an optional embodiment, if Figure 1 、 Figure 2 As shown, the high-precision particleboard slab laying device further includes a leveling mechanism 13 for leveling the wood chips accumulated on the third conveyor belt 12. In this embodiment, the leveling mechanism 13 can perform a single leveling operation on the particleboard slab after the three layers of wood chips are laid, thereby improving the flatness of the resulting particleboard slab.

[0058] In an optional embodiment, if Figure 6As shown, the leveling mechanism 13 includes: a leveling frame 131, a pressure rod 132, a transmission member 133 and a motor 134. The top of the leveling frame 131 is located above the third conveyor belt 12 along the Z direction; the pressure rod 132 is arranged above the third conveyor belt 12 along the Z direction parallel to the surface of the third conveyor belt 12, and the lowest point of the pressure rod 132 along the Z direction is spaced a preset distance from the surface of the third conveyor belt 12; the transmission member 133 is rotatably mounted on the leveling frame 131 and connected to the pressure rod 132; the motor 134 is fixed on the top of the leveling frame 131, and the driving end of the motor 134 is connected to the transmission member 133. When the motor 134 is started, it can drive the pressure rod 132 to rotate in a plane parallel to the surface of the third conveyor belt 12. In this embodiment, a rotatable pressure rod 132 is provided so that the three layers of wood chips conveyed by the third conveyor belt 12 are gradually flattened under the rotation and extrusion of the pressure rod 132. The rotating pressure rod 132 squeezes the surface of the wood chip layer at more angles, and the flattening effect is better.

[0059] In an optional embodiment, if Figure 6 As shown, the lower surface of the pressing rod 132 along the Z direction is an arc surface. In this embodiment, the arc surface of the lower surface of the pressing rod 132 can gradually increase the pressure when squeezing the wood particle layer, which is conducive to gradually compacting the wood particle layer.

[0060] In an optional embodiment, if Figure 7 As shown, the drum 4 includes a cylindrical drum body 41 and springs 42 uniformly fixed to the surface of the drum body 41. The springs 42 exert an elastic force on the wood shavings on the bottom plate of the screening trough 31, forcing them to adhere to the bottom plate surface. In this embodiment, the elastic force of the springs 42 promotes the entry of finely divided wood shavings into the gaps 311 or openings, thereby improving the effectiveness of the initial screening process.

[0061] In an optional embodiment, a screw conveyor 1 is used to convey the wood shavings. The screw conveyor 1 is connected to a hopper 2 and discharges the wood shavings into the hopper 2. The lower end of the hopper 2 is retracted and aligned with the feed chute 3 to facilitate the discharge of the wood shavings into the feed chute 3. The feed chute 3 is connected to a vibrating feeder 14. When the vibrating feeder 14 is activated, it vibrates the feed chute 3, causing the wood shavings therein to move in the opposite direction of the X direction. The drum 4 is connected to a drive 15, which causes the lower surface of the drum 4 to move approximately in the opposite direction of the X direction, driving the wood shavings in the opposite direction of the X direction along the bottom plate of the screening chute 31. The first conveyor belt 8, the second conveyor belt 10, and the third conveyor belt 12 can all be started and stopped independently. The third conveyor belt 12 can also be selected to convey in either the forward or reverse direction of the X direction.

[0062] This embodiment provides a method for paving a particleboard with high precision slabs, using the above-mentioned particleboard with high precision slab paving device, and includes the following steps:

[0063] S1, start the driving machine 15, and discharge some of the wood shavings in the feed chute 3 from the discharge end through the roller 4, and discharge some of the wood shavings from the slit 311 or the opening and fall onto the first conveyor belt 8; start the blowing device 6, and blow some of the wood shavings discharged from the discharge end in the positive direction of the X direction, so that the fine wood shavings fall onto the first conveyor belt 8, and the flaky wood shavings fall onto the second conveyor belt 10;

[0064] S2, the third conveyor belt 12 is transported in the reverse direction along the X direction, the first conveyor belt 8 is started, and the fine shavings on the first conveyor belt 8 are spread onto the surface thereof until a lower layer 200 of fine shavings is formed on the surface thereof, and the first conveyor belt 8 is stopped;

[0065] S3, the third conveyor belt 12 with the lower layer 200 of fine wood shavings is transported in the reverse direction along the X direction, the second conveyor belt 10 is started, and the flaky wood shavings on the second conveyor belt 10 are laid onto the lower layer 200 of fine wood shavings until a flaky wood shaving layer 300 is formed on the lower layer 200 of fine wood shavings, and the second conveyor belt 10 is stopped;

[0066] S4, the third conveyor belt 12 on which the flaky wood particle layer 300 is laid is transported in the forward direction along the X direction, the first conveyor belt 8 is started, and the fine wood particles on the first conveyor belt 8 are laid onto the flaky wood particle layer 300 until an upper layer 400 of fine wood particles is formed on the flaky wood particle layer 300;

[0067] S5, using the leveling mechanism 13 to level the laid upper layer 400 of finely chopped wood shavings.

[0068] In an optional embodiment, a vibrating feeder 14 is used to vibrate the feed chute 3. In step S1, the driver 15 is periodically started and stopped. This drive mode utilizes the vibration of the feed chute 3 to facilitate the discharge of wood chips from the slits 311 or openings. While the driver 15 is stopped, some fine wood chips in the screening chute 31 are vibrated and discharged from the slits 311 or openings onto the first conveyor belt 8. This drive mode improves the effectiveness of the initial screening process.

[0069] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations of the claims. Various modifications and variations may be made to the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form additional embodiments of the present application that may not be explicitly described. Therefore, the above embodiments merely illustrate several implementations of the present application and do not limit the scope of protection of the patent application.

Claims

1. A high-precision particleboard slab paving device, characterized in that: include: A feed trough (3), the feed trough (3) is used to receive flaky wood chips or fine wood chips discharged from the hopper (2); the feed trough (3) includes a screening trough (31), the bottom plate of the screening trough (31) is arc-shaped, and a plurality of slits (311) or openings are provided on the bottom plate of the screening trough (31); the slits (311) or openings are capable of allowing the fine wood chips to pass through; A roller (4) is installed in the screening trough (31), and the roller (4) can rotate under the drive of a driving machine (15); the wood chips located in the feed trough (3) can enter between the roller (4) and the bottom plate of the screening trough (31), and can move along the bottom plate of the screening trough (31) under the rotation of the roller (4) and be discharged from the discharge end of the screening trough (31); A blowing device (6), used for blowing air in a forward direction along the X direction, is provided on one side of the discharge end of the screening trough (31); a first conveyor belt (8), at least partially located below the screening trough (31) along the Z direction, for receiving the finely chopped wood chips passing through the slits (311) or the openings, and the finely chopped wood chips discharged from the screening trough (31) and subjected to the force of the blowing device (6); A second conveyor belt (10) is used to receive the flaky wood chips discharged from the screening trough (31); the projection of the second conveyor belt (10) along the Z direction is at least partially located on the side opposite to the projection of the first conveyor belt (8) along the Z direction in the X direction.

2. The high-precision particleboard slab paving device according to claim 1, characterized in that: The particleboard high-precision slab paving device also includes a first guide plate (5), a first side of which is connected to the discharge end of the screening trough (31), and a second side which extends in the opposite direction of the X direction and downward in the Z direction, and the second side is the opposite side of the first side.

3. The high-precision particleboard slab paving device according to claim 2, characterized in that: The particleboard high-precision slab paving device further comprises a second guide plate (7); along the Z direction, the upper end of the second guide plate (7) is located below the second side of the first guide plate (5); The second guide plate (7) includes a first guide surface (71) and a second guide surface (72); the first guide surface (71) extends along the X direction and the Z direction, and is used to guide the shavings above the Z direction to the first conveyor belt (8); the second guide surface (72) extends along the Z direction, and is used to guide the shavings on the opposite side of the X direction to the second conveyor belt (10).

4. The high-precision particleboard slab paving device according to claim 1, characterized in that: The particleboard high-precision slab paving device also includes a first scraper assembly (9) and a second scraper assembly (11), wherein the first scraper assembly (9) is used to level the shavings transmitted on the first conveyor belt (8), and the second scraper assembly (11) is used to level the shavings transmitted on the second conveyor belt (10).

5. The high-precision particleboard slab paving device according to claim 1, characterized in that: The high-precision particleboard slab paving device also includes a third conveyor belt (12), which is located below the first conveyor belt (8) and the second conveyor belt (10) along the Z direction; the third conveyor belt (12) is used for forward or reverse transmission along the X direction, so that the particles transmitted by the first conveyor belt (8) and the second conveyor belt (10) fall onto its surface.

6. The high-precision particleboard slab paving device according to claim 5, characterized in that: The particleboard high-precision slab paving device further comprises a leveling mechanism (13), and the leveling mechanism (13) is used to level the shavings accumulated on the third conveyor belt (12).

7. The high-precision particleboard slab paving device according to claim 6, characterized in that: The leveling mechanism (13) comprises: a leveling frame (131), wherein the top of the leveling frame (131) is located above the third conveyor belt (12) along the Z direction; A pressure rod (132) is arranged parallel to the surface of the third conveyor belt (12) and above the third conveyor belt (12) along the Z direction, and a preset distance is spaced between the lowest point of the pressure rod (132) along the Z direction and the surface of the third conveyor belt (12); A transmission member (133) is rotatably mounted on the leveling frame (131) and connected to the pressure rod (132); A motor (134) is fixed on the top of the leveling frame (131), and a driving end of the motor (134) is connected to the transmission member (133). When the motor (134) is started, it can drive the pressure rod (132) to rotate in a plane parallel to the surface of the third conveyor belt (12).

8. The high-precision particleboard slab paving device according to claim 7, characterized in that: The lower surface of the pressure rod (132) along the Z direction is a curved surface.

9. The high-precision particleboard slab paving device according to any one of claims 1 to 8, characterized in that: The drum (4) comprises a cylindrical drum body (41) and elastic pieces (42) uniformly fixed on the surface of the drum body (41); the elastic pieces (42) can exert elastic force on the wood shavings on the bottom plate of the screening trough (31) so that the wood shavings adhere to the surface of the bottom plate.

10. A high-precision particleboard slab paving method, characterized in that: The high-precision particleboard slab paving device according to any one of claims 1 to 9 comprises the following steps: S1, starting the driving machine (15), discharging part of the wood shavings in the feed trough (3) from the discharge end through the roller (4), and discharging part of the wood shavings from the gap (311) or the opening and falling onto the first conveyor belt (8); starting the blowing device (6), blowing part of the wood shavings discharged from the discharge end in the positive direction of the X direction, so that the fine wood shavings in the wood shavings fall onto the first conveyor belt (8), and the flaky wood shavings in the wood shavings fall onto the second conveyor belt (10); S2, transporting the third conveyor belt (12) in the reverse direction along the X direction, starting the first conveyor belt (8), laying the fine wood chips on the first conveyor belt (8) onto the third conveyor belt (12), until a lower layer (200) of fine wood chips is formed on the third conveyor belt (12), and stopping the first conveyor belt (8); S3, the third conveyor belt (12) on which the lower layer (200) of fine wood shavings is laid is transported in the reverse direction along the X direction, the second conveyor belt (10) is started, and the flaky wood shavings on the second conveyor belt (10) are laid on the lower layer (200) of fine wood shavings until a flaky wood shaving layer (300) is formed on the lower layer (200) of fine wood shavings, and the second conveyor belt (10) is stopped; S4, transporting the third conveyor belt (12) on which the flaky wood particle layer (300) is laid in the forward direction along the X direction, starting the first conveyor belt (8), and laying the fine wood particles on the first conveyor belt (8) onto the flaky wood particle layer (300) until an upper layer (400) of fine wood particles is formed on the flaky wood particle layer (300); S5, using a leveling mechanism (13) to level the laid upper layer (400) of the finely chopped wood shavings.

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