Sanding equipment and shaving board production system

Abstract

The utility model provides sanding equipment and a shaving board production system. The sanding equipment comprises an upper rack and a lower rack, the multiple sets of grinding units are installed between the upper rack and the lower rack, the multiple sets of grinding units are sequentially arranged in the conveying direction of shaving boards from the outside, and each grinding unit comprises a conveying assembly suitable for conveying the shaving boards; the polishing assembly is arranged at the rear end, located at the downstream of the conveying direction, of the conveying assembly and comprises a polishing abrasive belt; the pressing assembly is arranged opposite to the grinding assembly in the vertical direction orthogonal to the conveying direction and comprises a pressing belt, and the pressing belt abuts against the second surface, opposite to the first surface, of the shaving board under the condition that the grinding abrasive belt sands the first surface of the shaving board; and the positions of the grinding assemblies and the pressing assemblies of every two adjacent grinding units are interchanged, so that the first surface and the second surface of the shaving board are alternately sanded.

Description

Technical Field

[0001] The utility model relates to the technical field of particleboard sanding, and more specifically, to a sanding device and a particleboard production system. Background Art

[0002] During the production process, the raw materials are formed into particleboard after being hot-pressed by a hot press. Then the cooled and shaped particleboard needs to be sanded by a sanding equipment to increase the flatness and smoothness of the board surface.

[0003] In the related art, CN209936593U discloses a sanding machine, which includes a thickness grinding unit, a coarse sand grinding unit, a fine sand grinding unit and a fine sand grinding unit which are sequentially arranged on a bracket, wherein the thickness grinding unit includes four parallel first grinding rollers and two annular first grinding belts, each of which is rotatably connected to the two first grinding rollers, and the coarse sand grinding unit includes four parallel second grinding rollers and two annular second grinding belts, each of which is rotatably connected to the two second grinding rollers. The fine sand grinding unit includes six third grinding rollers and two annular third grinding belts, each of which is rotatably connected to the three third grinding rollers. The fine sand grinding unit includes six fourth grinding rollers and two fourth grinding belts, each of which is rotatably connected to the three fourth grinding rollers. It also includes four grinding pads, which are respectively located in the two third grinding belts and the two fourth grinding belts. The two grinding pads located in the third grinding belts and the two grinding pads located in the fourth grinding belts are arranged relatively. The grinding belts of each grinding unit are arranged relatively. When the particleboard is sanded on both sides at the same time, due to the different use degrees of the sanding surface of the sanding belt, the degree of abrasive wear on the sanding surface is also different. Therefore, when the two surfaces of the particleboard are sanded at the same time, one surface of the particleboard and the sanding belt will slip due to the loose fit, making the surface sanding of the particleboard uneven, affecting the subsequent production quality of the particleboard. Utility Model Content

[0004] In order to solve at least one of the technical problems in the prior art, an embodiment of the utility model provides a sanding device and a particleboard production system, which can realize alternating sanding or single-sided sanding of the first surface and the second surface of the particleboard, thereby ensuring the fit between the sanding belt and the particleboard and avoiding the slipping problem between one surface of the particleboard and the sanding belt due to different degrees of use of the sanding surface.

[0005] An embodiment of the utility model provides a sanding device, comprising: an upper frame and a lower frame; and a plurality of groups of sanding units installed between the upper frame and the lower frame, the plurality of groups of sanding units are arranged in sequence along the conveying direction of the particle board from the outside, and each of the sanding units comprises: a conveying assembly, suitable for conveying the particle board; a sanding assembly, arranged at the rear end of the conveying assembly located downstream of the conveying direction, and comprising a sanding belt; and a pressing assembly, arranged relative to the sanding assembly along a vertical direction orthogonal to the conveying direction, and comprising a pressing belt, when the sanding belt sands the first surface of the particle board, the pressing belt abuts against the second surface of the particle board opposite to the first surface; wherein the positions of the sanding assemblies and the pressing assemblies of two adjacent sanding units are interchanged to alternately sand the first surface and the second surface of the particle board.

[0006] According to some embodiments of the present invention, the rotation directions of the sanding belt and the pressing belt at the contact parts with the particle board are opposite to the conveying direction, so as to sand the first surface or the second surface of the particle board.

[0007] According to some embodiments of the utility model, each of the above-mentioned grinding assembly and the above-mentioned pressing assembly includes: a driving motor, mounted on the above-mentioned upper frame or the above-mentioned lower frame; a driving roller, rotatably mounted on the above-mentioned upper frame or the above-mentioned lower frame to rotate under the drive of the above-mentioned driving motor; and a driven roller, rotatably mounted on the above-mentioned upper frame or the above-mentioned lower frame, and the above-mentioned grinding belt or the above-mentioned pressing belt is wrapped around the above-mentioned driving roller and the above-mentioned driven roller to move in a circulation under the drive of the above-mentioned driving roller.

[0008] According to some embodiments of the present invention, a plurality of grooves are evenly distributed on the driven roller to limit the sliding of the grinding belt or the pressing belt relative to the driven roller.

[0009] According to some embodiments of the utility model, the conveying assembly includes: a plurality of rotating rollers, which are arranged in sequence along the conveying direction, and the axial direction of the rotating rollers is orthogonal to the conveying direction and extends horizontally to convey the particle board to between the grinding belt and the pressing belt for sanding.

[0010] According to some embodiments of the present invention, the grinding unit further includes: a dust removal component, which is arranged on the side of the grinding belt, and the dust removal component is suitable for absorbing debris adhering to the surface of the grinding belt through negative pressure.

[0011] According to some embodiments of the utility model, the sanding equipment further includes: a lifting column connected between the upper frame and the lower frame, the lifting column being configured to adjust the distance between the upper frame and the lower frame so that the first surface of the particle board contacts the sanding belt and the second surface contacts the pressing belt; and a driving mechanism connected to the lifting column, the driving mechanism being adapted to drive the lifting column to rise and fall so as to adjust the distance between the upper frame and the lower frame.

[0012] According to some embodiments of the utility model, the sanding equipment further includes: a plurality of cooling components, which are respectively arranged on the lower frame and the upper frame, and the cooling components are configured to utilize a cooling medium to cool a driven roller driven by the sanding belt when sanding the particleboard.

[0013] According to some embodiments of the present invention, the sanding equipment further comprises: a plurality of cooling pumps connected to the cooling assembly, wherein the cooling pumps are adapted to transport the cooling medium into the cooling assembly by pressure.

[0014] According to some embodiments provided by another aspect of the present invention, a particleboard production system includes: a hot press, suitable for forming a particleboard by hot-pressing particles; and the above-mentioned sanding equipment, suitable for sanding the first surface and the second surface of the above-mentioned particleboard.

[0015] According to a sanding device and a particleboard production system of an embodiment of the utility model, a plurality of groups of sanding units are installed between an upper frame and a lower frame, and the plurality of groups of sanding units are arranged in sequence along the conveying direction of the particleboard from the outside, each sanding unit includes a conveying component, a sanding component and a pressing component, and the particleboard is conveyed by the conveying component, and the sanding component is arranged at the rear end of the conveying component located downstream of the conveying direction, and the sanding component includes a sanding belt, and the pressing component is arranged relative to the sanding component along a vertical direction orthogonal to the conveying direction, and the pressing component includes a pressing belt, and the sanding belt sands the first surface of the particleboard In this case, the pressing belt abuts against the second surface of the particle board opposite to the first surface, and the positions of the grinding components and the pressing components of the two adjacent grinding units are interchanged, so that the first surface and the second surface of the particle board can be alternately sanded or single-sided sanded, so that when the grinding belt sands the first surface of the particle board, the pressing belt abuts against the second surface of the particle board, thereby ensuring the fit between the grinding belt and the particle board, avoiding the slippage problem between one surface of the particle board and the grinding belt due to different degrees of use of the sanding surface, ensuring the uniformity of sanding on the two surfaces of the particle board, and improving the production quality of the particle board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1is a cross-sectional view of a sanding device according to an exemplary embodiment of the utility model; and

[0017] Figure 2 yes Figure 1 Cross-section view along the AA direction.

[0018] In the drawings, the meanings of the reference numerals are as follows:

[0019] 1. Mount the machine frame;

[0020] 2. Lower the rack;

[0021] 3. Conveying components;

[0022] 31. Rotating roller;

[0023] 4. Polishing components;

[0024] 41. Grinding belt;

[0025] 5. Press the components;

[0026] 51. Compression belt;

[0027] 6. Driving motor;

[0028] 7. Driving roller;

[0029] 8. Driven roller;

[0030] 81. Groove;

[0031] 9. Dust removal components;

[0032] 91. Cleaning roller;

[0033] 10. Lifting column. DETAILED DESCRIPTION

[0034] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, it is obvious that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0035] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "include", "comprises", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0036] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0037] In the case of using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.). In the case of using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0038] In order to solve the problem of uneven sanding of the two surfaces of the particle board, according to the concept of one aspect of the utility model, multiple groups of grinding units are installed between the upper frame and the lower frame, and the multiple groups of grinding units are arranged in sequence along the conveying direction of the particle board from the outside. Each grinding unit includes a conveying component, a grinding component and a pressing component. The particle board is conveyed by the conveying component. The grinding component is arranged at the rear end of the conveying component located downstream of the conveying direction. The grinding component includes a grinding belt. The pressing component is arranged relative to the grinding component along a vertical direction orthogonal to the conveying direction. The pressing component includes a pressing belt. When the grinding belt is applied to the first surface of the particle board When sanding, the pressure belt abuts against the second surface of the particle board opposite to the first surface, and the positions of the grinding components and the pressure components of the two adjacent grinding units are interchanged, so that the first surface and the second surface of the particle board can be alternately sanded or single-sided sanded, so that when the grinding belt sands the first surface of the particle board, the pressure belt abuts against the second surface of the particle board, thereby ensuring the fit between the grinding belt and the particle board, avoiding the slippage problem between one surface of the particle board and the grinding belt due to different degrees of use of the sanding surface, ensuring the uniformity of sanding on the two surfaces of the particle board, and improving the production quality of the particle board.

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0040] Figure 1 It is a cross-sectional view of a sanding device according to an illustrative embodiment of the utility model.

[0041] According to the embodiments of the present utility model, Figure 1 As shown, a sanding device includes an upper frame 1, a lower frame 2 and a plurality of sanding units. The plurality of sanding units are installed between the upper frame 1 and the lower frame 2, and the plurality of sanding units are arranged in sequence along the conveying direction of the particle board from the outside, and each sanding unit includes a conveying component 3, a sanding component 4 and a pressing component 5. The conveying component 3 is suitable for conveying the particle board. The sanding component 4 is arranged at the rear end of the conveying component 3 downstream in the conveying direction, and the sanding component 4 includes a sanding belt 41. The pressing component 5 is arranged relative to the sanding component 4 along a vertical direction orthogonal to the conveying direction (such as Figure 1 As shown, the pressing assembly 5 is located on the upper side of the sanding assembly 4), and the pressing assembly 5 includes a pressing belt 51. When the sanding belt 41 sands the first surface of the particle board, the pressing belt 51 abuts against the second surface of the particle board opposite to the first surface. The positions of the sanding assemblies 4 and the pressing assemblies 5 of the two adjacent sanding units are interchanged to alternately sand the first surface and the second surface of the particle board.

[0042] According to an embodiment of the utility model, a pressing assembly 5 is arranged opposite to the grinding assembly 4 in a vertical direction orthogonal to the conveying direction. When the grinding belt 41 sands the first surface of the particle board, the pressing belt 51 abuts against the second surface of the particle board opposite to the first surface, so that the first surface of the particle board is sanded completely and the uniformity of the sanding degree is ensured.

[0043] According to an optional embodiment of the present invention, the compression belt 51 is an elastic PVC (Polyvinylchloride) conveyor belt, the material of which is, for example, polyvinyl chloride, which can avoid deformation of the particle board when the compression belt 51 abuts against the second surface of the particle board.

[0044] According to an embodiment of the utility model, when the particle board passes through the first group of grinding units, the grinding belt 41 sands the first surface of the particle board. When passing through the second group of grinding units, since the positions of the grinding components 4 and the clamping components 5 of the two adjacent grinding units are interchanged, the grinding belt 41 sands the second surface of the particle board to achieve alternating sanding of the first surface and the second surface of the particle board.

[0045] According to an embodiment of the utility model, a plurality of grinding units are installed between an upper frame 1 and a lower frame 2, and the plurality of grinding units are sequentially arranged along the conveying direction of the particle board from the outside, and each grinding unit includes a conveying component 3, a grinding component 4 and a pressing component 5, and the particle board is conveyed by the conveying component 3, and the grinding component 4 is arranged at the rear end of the conveying component 3 located downstream in the conveying direction, and the grinding component 4 includes a grinding belt 41, and the pressing component 5 is arranged relative to the grinding component 4 along a vertical direction orthogonal to the conveying direction, and the pressing component 5 includes a pressing belt 51, and when the grinding belt 41 sands the first surface of the particle board The pressing belt 51 is pressed against the second surface of the particle board opposite to the first surface. The positions of the grinding components and the pressing components of the two adjacent grinding units are interchanged, so that the first surface and the second surface of the particle board can be alternately sanded or single-sided sanded. When the grinding belt 41 sands the first surface of the particle board, the pressing belt 51 is pressed against the second surface of the particle board, ensuring the fit between the grinding belt 41 and the particle board, avoiding the slippage problem between one surface of the particle board and the grinding belt 41 due to different degrees of use of the sanding surface, ensuring the uniformity of sanding on the two surfaces of the particle board, and improving the production quality of the particle board.

[0046] According to the embodiment of the present invention, the rotation direction of the sanding belt 41 and the pressing belt 51 at the contact portion with the particle board is opposite to the conveying direction, so as to sand the first surface or the second surface of the particle board.

[0047] According to an embodiment of the utility model, the rotation direction of the sanding belt 41 and the pressing belt 51 at the contact part with the particle board is opposite to the conveying direction, so that when the particle board is conveyed between the sanding belt 41 and the pressing belt 51 via the conveying component 3, the sanding belt 41 sands the first surface or the second surface of the particle board.

[0048] According to an embodiment of the utility model, each of the grinding assembly 4 and the pressing assembly 5 includes a driving motor 6, a driving roller 7 and a driven roller 8. The driving motor 6 is mounted on the upper frame 1 or the lower frame 2. The driving roller 7 is rotatably mounted on the upper frame 1 or the lower frame 2 to rotate under the drive of the driving motor 6. The driven roller 8 is rotatably mounted on the upper frame 1 or the lower frame 2, and the grinding belt 41 or the pressing belt 51 is wrapped around the driving roller 7 and the driven roller 8 to circulate under the drive of the driving roller 7.

[0049] According to the embodiment of the utility model, when the abrasive grains on the sanding belt 41 are no longer rough due to sanding the particle board, the sanding belt 41 needs to be replaced in time. When the pressing belt 51 is oxidized due to long-term use, the pressing belt 51 needs to be replaced in time. At the same time, the positions of the sanding belt 41 and the pressing belt 51 can be adjusted in time according to the sanding degree of the two surfaces of the particle board. If there is uneven sanding degree, the sanding order of the first surface or the second surface of the particle board can be selected.

[0050] Figure 2 yes Figure 1 Cross-section view along the AA direction.

[0051] According to the embodiments of the present utility model, Figure 2 As shown, a plurality of grooves 81 are evenly distributed on the driven roller 8 to limit the sliding of the grinding belt 41 or the pressing belt 51 relative to the driven roller 8 .

[0052] According to an embodiment of the utility model, a plurality of grooves 81 are evenly arranged on the driven roller 8, which can increase the friction between the sanding belt 41 or the pressure belt 51 and the driven roller 8, thereby limiting the sliding of the sanding belt 41 or the pressure belt 51 relative to the driven roller 8 during the sanding of the particleboard.

[0053] According to an embodiment of the utility model, the conveying assembly 3 includes a plurality of rotating rollers 31, which are arranged in sequence along the conveying direction. The axial direction of the rotating rollers 31 is orthogonal to the conveying direction and extends horizontally to convey the particleboard to between the sanding belt 41 and the pressing belt 51 for sanding.

[0054] According to an embodiment of the utility model, a plurality of rotating rollers 31 are arranged in the conveying assembly 3. When the particle board is conveyed to between the sanding belt 41 and the pressing belt 51 for sanding, when the particle board is subjected to resistance from the sanding belt 41 and the pressing belt 51 along the conveying direction, the plurality of rotating rollers 31 can abut against the two surfaces of the particle board and keep the particle board in the original conveying direction unchanged, and continue sanding.

[0055] According to an embodiment of the present invention, the grinding unit further comprises a dust removal assembly 9 disposed on the side of the grinding belt 41 , and the dust removal assembly 9 is adapted to absorb debris adhering to the surface of the grinding belt 41 through negative pressure.

[0056] According to the embodiment of the utility model, when the sanding belt 41 is sanding the particleboard, the sanded wood chips are easily adhered to the sanding surface of the sanding belt 41 due to the MDI glue in the particleboard, and the dust removal component 9 is arranged on the side of the sanding belt 41, and a cleaning roller 91 parallel to the driving roller 7 or the driven roller 8 is rotatably arranged in the inner cavity of the dust removal component 9, and a large number of bristles are arranged on the cleaning roller 91 along the axial direction, and a motor is installed on one end face of the dust removal component 9, and the output shaft of the motor is electrically connected to the cleaning roller 91, and the cleaning roller 91 is driven by the motor to rotate, and then during the rotation of the cleaning roller 91, the bristles are used to sweep away the debris adhering to the surface of the sanding belt 41, and the negative pressure is used to absorb the debris adhering to the surface of the sanding belt 41, thereby ensuring the subsequent sanding effect of the sanding belt 41 on the particleboard.

[0057] According to an optional embodiment of the utility model, a dust removal component 9 can also be provided on the side of the pressure belt 51. When the sanding belt 41 sands the first surface of the particle board, the pressure belt 51 rests on the second surface of the particle board, and wood chips will also adhere to the second surface due to the MDI glue in the particle board. The dust removal component 9 can absorb the chips stuck to the surface of the pressure belt 51 through negative pressure.

[0058] According to an embodiment of the utility model, the sanding device further comprises a lifting column 10 and a driving mechanism. The lifting column 10 is connected between the upper frame 1 and the lower frame 2, and the lifting column 10 is configured to adjust the distance between the upper frame 1 and the lower frame 2, so that the first surface of the particle board is in contact with the sanding belt 41, and the second surface is in contact with the pressing belt 51. The driving mechanism is connected to the lifting column 10, and the driving mechanism is suitable for driving the lifting column 10 to rise and fall, so as to adjust the distance between the upper frame 1 and the lower frame 2.

[0059] According to an optional embodiment of the present invention, the driving mechanism is, for example, a hydraulic pump and an electric motor.

[0060] According to an embodiment of the utility model, the lifting column 10 can adjust the distance between the upper frame 1 and the lower frame 2 according to the thickness of the particle board, so that the first surface of the particle board contacts the sanding belt 41 and the second surface contacts the pressing belt 51.

[0061] According to an embodiment of the utility model, the sanding equipment also includes a plurality of cooling components, which are respectively arranged on the lower frame 2 and the upper frame 1, and the cooling components are configured to use a cooling medium to cool the driven roller 8 driven by the sanding belt 41 when sanding the particleboard.

[0062] According to an optional embodiment of the present invention, the cooling medium can be selected from water, air and refrigerant, and the refrigerant is, for example, Freon, ammonia and carbon dioxide.

[0063] According to the embodiment of the utility model, when the grinding belt 41 is sanding the particle board, the grinding belt 41 heats up due to long-term friction, and the MDI glue in the particle board has general high temperature resistance, which can easily cause deformation of the plate blank. The driven roller 8 driven by the grinding belt 41 is cooled by a cooling medium when the particle board is sanding, so that the heat on the driven roller 8 can be fully taken away during the flow of the cooling medium. The grinding belt 41 contacts the driven roller 8 during the circulating movement on the driving roller 7 and the driven roller 8, and the cooling medium indirectly cools the grinding belt 41.

[0064] According to an embodiment of the utility model, the sanding equipment further comprises a plurality of cooling pumps, the plurality of cooling pumps are connected to the cooling assembly, and the cooling pumps are adapted to transport the cooling medium into the cooling assembly by using pressure.

[0065] According to another embodiment of the utility model, a particleboard production system includes a hot press and a sanding device. The hot press is suitable for forming the particleboard by hot pressing the particleboard. The sanding device is suitable for sanding the first surface and the second surface of the particleboard.

[0066] According to the embodiment of the utility model, the first surface and the second surface of the particle board are alternately sanded to ensure the uniformity of the sanding of the two surfaces of the particle board, thereby improving the production quality of the particle board.

[0067] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted when they may cause confusion in the understanding of the present invention, and the shapes and sizes of the components in the drawings do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present invention.

[0068] Unless otherwise indicated, the numerical parameters in this specification and the appended claims are approximate values ​​and can be changed according to the desired characteristics obtained by the content of the utility model. Specifically, all numbers used in the specification and claims to express the content of the composition, reaction conditions, etc., should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression is to include changes in certain embodiments of ±10%, changes in certain embodiments of ±5%, changes in certain embodiments of ±1%, and changes in certain embodiments of ±0.5%.

[0069] The ordinal numbers used in the specification and claims, such as "first", "second", "third", etc., to modify the corresponding elements, do not themselves mean that the elements have any ordinal numbers, nor do they represent the order of one element and another element, or the order in the manufacturing method. The use of these ordinal numbers is only used to clearly distinguish a component with a certain name from another component with the same name.

[0070] In addition, unless the steps are specifically described or must occur in sequence, the order of the above steps is not limited to the above list, and can be changed or rearranged according to the required design. And the above embodiments can be mixed and matched with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0071] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sanding device, characterized in that: include: Upper rack and lower rack; as well as A plurality of grinding units are installed between the upper frame and the lower frame, and the plurality of grinding units are arranged in sequence along the conveying direction of the particle board from the outside, and each of the grinding units includes: A conveying assembly, adapted to convey the particle board; a grinding assembly, disposed at a rear end of the conveying assembly located downstream in the conveying direction, and comprising a grinding belt; and a pressing assembly disposed opposite to the sanding assembly in a vertical direction orthogonal to the conveying direction, and comprising a pressing belt, wherein when the sanding belt sands the first surface of the particle board, the pressing belt abuts against a second surface of the particle board opposite to the first surface; Wherein, the positions of the grinding components and the pressing components of the two adjacent grinding units are interchanged to alternately sand the first surface and the second surface of the particle board.

2. The sanding device according to claim 1, characterized in that: The rotation directions of the sanding belt and the pressing belt at the contact parts with the particle board are opposite to the conveying direction, so as to sand the first surface or the second surface of the particle board.

3. The sanding device according to claim 1, characterized in that: Each of the grinding assembly and the pressing assembly comprises: A driving motor, mounted on the upper frame or the lower frame; a driving roller rotatably mounted on the upper frame or the lower frame to rotate under the driving of the driving motor; and The driven roller is rotatably mounted on the upper frame or the lower frame, and the grinding belt or the pressing belt is wrapped around the driving roller and the driven roller to circulate under the drive of the driving roller.

4. The sanding device according to claim 3, characterized in that: A plurality of grooves are evenly distributed on the driven roller to limit the sliding of the grinding belt or the pressing belt relative to the driven roller.

5. The sanding device according to any one of claims 1 to 4, characterized in that: The conveying assembly comprises: A plurality of rotating rollers are sequentially arranged along the conveying direction, and the axial direction of the rotating rollers is orthogonal to the conveying direction and extends horizontally, so as to convey the particle board to between the grinding belt and the pressing belt for sanding.

6. The sanding device according to any one of claims 1 to 4, characterized in that: The grinding unit also includes: A dust removal component is arranged on the side of the grinding belt, and the dust removal component is suitable for absorbing debris adhering to the surface of the grinding belt through negative pressure.

7. The sanding device according to any one of claims 1 to 4, characterized in that: Also includes: A lifting column connected between the upper frame and the lower frame, wherein the lifting column is configured to adjust the distance between the upper frame and the lower frame so that the first surface of the particle board contacts the sanding belt and the second surface contacts the pressing belt; as well as A driving mechanism is connected to the lifting column, and the driving mechanism is suitable for driving the lifting column to move up and down so as to adjust the distance between the upper frame and the lower frame.

8. The sanding device according to any one of claims 1 to 4, characterized in that: Also includes: A plurality of cooling components are respectively arranged on the lower frame and the upper frame, and the cooling components are configured to utilize a cooling medium to cool a driven roller driven by the sanding belt when sanding the particleboard.

9. The sanding device according to claim 8, characterized in that: Also includes: A plurality of cooling pumps are connected to the cooling assembly, and the cooling pumps are suitable for conveying the cooling medium into the cooling assembly by using pressure.

10. A particleboard production system, characterized in that: include: A hot press suitable for forming particleboard by hot pressing the wood particles into shape; as well as The sanding device according to any one of claims 1 to 9 is suitable for sanding the first surface and the second surface of the particle board.

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