Wood board sanding equipment

Abstract

The invention relates to the technical field of sanding equipment, and particularly discloses board sanding equipment which comprises a rack, a sanding assembly, a pressing mechanism and a constant pressure mechanism are arranged on the rack, the sanding assembly comprises a sanding belt and a driving structure, and the pressing mechanism comprises a pressing frame, a plurality of air bag rollers and a driving assembly. Each air bag roller is rotationally arranged on the pressing frame in the width direction of the abrasive belt, a space allowing a wood plate to penetrate through is formed between each air bag roller and the abrasive belt, the constant-pressure mechanism comprises a pressure monitoring part and a ventilation assembly, and the pressure monitoring parts are arranged in the air bag rollers and used for monitoring the pressure values in the air bag rollers in real time; the ventilation assembly is used for conducting ventilation or exhaust on the interior of the air bag roller when the pressure in the air bag roller changes, so that the pressure in the air bag roller is kept in a constant state. The pressure in the air bag roller is monitored and adjusted in real time, so that the air bag roller is kept in a constant state, the air bag roller can apply uniform pressure to a wood board, and the sanding effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of sanding equipment, and in particular to a wood board sanding equipment. Background Art

[0002] The production and processing of wooden boards requires a sanding process. Sanding refers to a method of physically removing some uneven, unevenly thick materials and objects that do not meet the process requirements through abrasive cloth, grinding wheels, sandpaper, scouring pads, etc. to make them smoother, flatter, and of uniform thickness. A sanding machine is a mechanical device required to complete the sanding work. It is one of the commonly used equipment in the modern wood processing industry. It uses a cutting tool equipped with abrasives (emery cloth or sandpaper) to sand the workpiece to improve its accuracy, flatness and roughness quality.

[0003] The patent document with publication number CN212735475U discloses a sanding machine for wooden boards, including a sanding machine body and a placing table. A pushing mechanism for pushing the wooden board to run along the length direction of the placing table is arranged at one end of the placing table. The placing table is connected with a clamping mechanism for clamping one side wall of the wooden board against a sanding belt along its length direction. The pushing mechanism includes a pushing plate and a pushing hydraulic cylinder for driving the pushing plate to move. The clamping mechanism includes a clamping plate arranged along the length direction of the sanding belt. The clamping plate is connected to a control component for controlling it to approach or move away from the sanding belt. When working, the clamping plate is adjusted by the control component so that the clamping plate fits the side wall of the wooden board with the sanding belt, which is convenient for the staff to process the wooden board and reduces the labor intensity of the staff.

[0004] However, when the above-mentioned sanding machine processes wooden boards, it can only sand wooden boards with uniform thickness. For some wooden boards with inclined upper surfaces, uneven pressure will be applied to each part of the inclined wooden board. This uneven pressure will cause inconsistent sanding degrees in different parts of the wooden board, affecting the sanding effect of the wooden board and further affecting the processing quality. Summary of the invention

[0005] The present invention provides a wood board sanding device, aiming to solve the problem that when a sanding machine in the related technology processes a beveled wood board, uneven pressure is applied to each part of the beveled wood board, and such uneven pressure causes inconsistent sanding degrees of different parts of the wood board, thereby affecting the sanding effect of the wood board and further affecting the processing quality.

[0006] A wood board sanding device of the present invention comprises a frame, a sanding assembly is arranged on the frame, the sanding assembly comprises a sanding belt rotatably arranged on the frame, and a driving structure for driving the sanding belt to reciprocate, and also comprises a pressing mechanism and a constant pressure mechanism arranged on the frame; The clamping mechanism includes a clamping frame, a plurality of airbag rollers and a driving assembly. The plurality of airbag rollers are arranged in an array along the length direction of the abrasive belt, and each airbag roller is arranged on the clamping frame to rotate along the width direction of the abrasive belt. There is a space between the lower side of the airbag roller and the upper surface of the abrasive belt for the wooden board to pass through. The driving assembly is used to drive the plurality of airbag rollers to rotate synchronously around their own axes. The constant pressure mechanism is provided in multiple groups and respectively corresponds to multiple airbag rollers. Each group of constant pressure mechanism includes a pressure monitoring device and a ventilation component. The pressure monitoring device is provided inside the airbag roller for real-time monitoring of the pressure value inside the airbag roller. The ventilation component is used to ventilate or exhaust the inside of the airbag roller when the pressure inside the airbag roller changes, so as to keep the pressure inside the airbag roller in a constant state.

[0007] The wooden board can be pressed against the sanding belt by the airbag roller, and the airbag roller can be adjusted according to the thickness of the wooden board to ensure good contact between the wooden board and the sanding belt. During this process, the pressure inside the airbag roller can be monitored and adjusted in real time through the cooperation of the pressure monitoring component and the ventilation component to keep it in a constant state, thereby ensuring that the airbag roller applies uniform pressure to the wooden board and improving the sanding effect.

[0008] Preferably, a moving frame and a driving member 1 are provided on the pressing frame, the moving frame is slidably matched with the pressing frame in the longitudinal direction, the driving member 1 is used to drive the moving frame to move up and down, and the airbag roller is rotatably arranged on the moving frame.

[0009] Preferably, two sliding plates are provided on the movable frame, and the two sliding plates are slidably matched with the movable frame along the width direction of the frame, and the two ends of the airbag roller are respectively connected to mounting parts, and the airbag roller rotates and cooperates with the sliding plates on the corresponding sides through the mounting parts, and a contact rod is provided on the side of one of the mounting parts away from the airbag roller, and the contact rod is eccentrically arranged, and a contact surface is provided on the side of the movable frame facing the contact rod, and the contact surface is inclined from top to bottom toward the direction close to the airbag roller, and an elastic part is provided between one of the sliding plates and the movable frame, and during the rotation of the airbag roller, the end of the contact rod can contact the contact surface, so that the airbag roller reciprocates along the width direction of the frame, and during the rotation of the airbag roller, the airbag roller can reciprocate through the cooperation of the contact rod and the contact surface, and drive the wooden board to reciprocate, so that the surface of the sanding belt is more fully utilized, thereby improving the utilization rate of the sanding belt.

[0010] Preferably, the driving assembly includes driving member 2, gear 1, gear 2 and a gear rack structure, gear 1 is rotatably arranged on the frame, gear 2 is connected to the mounting member at the end of any airbag roller, gear 1 is meshingly connected with gear 2, driving member 2 is arranged on the frame, and the output end is connected to gear 1, and the gear rack structure is arranged between multiple airbag rollers for realizing synchronous rotation between multiple airbag rollers.

[0011] Preferably, the thickness of gear one is greater than the thickness of gear two, so that during the reciprocating movement of the airbag roller, gear two and gear one can remain engaged to ensure the normal rotation of the airbag roller, thereby ensuring that the airbag roller can reciprocate smoothly.

[0012] Preferably, the ventilation assembly includes a through rod and a ventilation pipe. The through rod is arranged inside the airbag roller and is provided with a vent so that the inside of the through rod is communicated with the inside of the airbag roller. One end of the ventilation pipe passes through the mounting piece and is communicated with the inside of the through rod. The ventilation pipe is provided with a valve.

[0013] Preferably, a dust removal assembly is also provided on the frame, and the dust removal assembly includes a baffle, a dust collecting chamber and a dust suction piece. The baffle is provided on the side of the frame facing the moving direction of the wooden board, and a dust collecting channel is provided between the baffle and the end of the sanding belt. The dust collecting chamber is provided inside the frame and communicates with the dust collecting channel. The dust suction piece is used to suck the wood chips in the dust collecting channel into the dust collecting chamber, and can collect the wood chips generated during the sanding process to prevent the wood chips from being scattered everywhere and polluting the working environment.

[0014] Preferably, the driving structure includes a driving motor and two transmission wheels. The driving motor is arranged on the frame, and the output end is connected to one of the transmission wheels through a belt drive. The sanding belt is arranged on the two transmission wheels, and the two transmission wheels are connected through the sanding belt.

[0015] Preferably, a rough structure is provided on the circumferential side of the airbag roller, which can increase the friction between the airbag roller and the wooden board, improve the stability of the wooden board during the sanding process, and ensure the sanding effect.

[0016] The beneficial effects of the present invention are: 1. The present invention is provided with a pressing mechanism and a constant pressure mechanism. When sanding a wooden board, the wooden board can be pressed against the sanding belt by the airbag roller to ensure good contact between the wooden board and the sanding belt. In the process, the pressure inside the airbag roller can be monitored and adjusted in real time through the cooperation of the pressure monitoring component and the ventilation component to keep it in a constant state, so as to ensure that the airbag roller applies uniform pressure to the wooden board, improve the sanding effect, and ensure the quality and consistency of the wooden board surface.

[0017] 2. During the rotation of the airbag roller, the present invention can make the airbag roller reciprocate along the width direction of the frame through the cooperation between the contact rod and the contact surface, and drive the wooden board to reciprocate, so that the surface of the sanding belt can be more fully utilized, avoiding the situation where local areas are worn out prematurely while other areas are still relatively new, thereby improving the utilization rate of the sanding belt and extending the overall service life of the sanding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2It is a schematic structural diagram of the present invention cut along the longitudinal direction.

[0020] Figure 3 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the assembly structure of the contact rod and the mounting piece of the present invention.

[0022] Figure 5 It is a schematic diagram of the assembly structure of the airbag roller and the constant pressure mechanism of the present invention.

[0023] Reference numerals: 1. Frame; 11. Sanding belt; 12. Wooden board; 13. Baffle; 14. Dust collecting chamber; 15. Driving motor; 16. Transmission wheel; 21. Pressing frame; 22. Airbag roller; 23. Moving frame; 231. Contact surface; 24. Driving member 1; 25. Sliding plate; 251. Elastic member; 26. Mounting member; 261. Contact rod; 31. Pressure monitoring member; 32. Through rod; 321. Vent; 33. Vent pipe; 34. Valve; 41. Driving member 2; 42. Gear 1; 43. Gear 2. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] like Figures 1 to 5 As shown, a wood board sanding device of the present invention comprises a frame 1, on which a sanding assembly, a clamping mechanism and a constant pressure mechanism are arranged.

[0026] The sanding assembly is used to sand the wooden board 12. The sanding assembly includes a sanding belt 11 rotatably arranged on a frame 1, and a driving structure for driving the sanding belt 11 to reciprocate. The driving structure includes a driving motor 15 and two transmission wheels 16. The driving motor 15 is arranged on the frame 1, and the output end is connected to one of the transmission wheels 16 through a belt drive. The sanding belt 11 is sleeved on the two transmission wheels 16, and the two transmission wheels 16 are connected through the sanding belt 11.

[0027] The clamping mechanism is used to press the wooden board 12 against the sanding belt 11 during the sanding process to ensure good contact between the wooden board 12 and the surface of the sanding belt 11. The clamping mechanism includes a clamping frame 21, a plurality of airbag rollers 22 and a driving assembly. The plurality of airbag rollers 22 are arranged in an array along the length direction of the sanding belt 11, and each airbag roller 22 is arranged on the clamping frame 21 to rotate along the width direction of the sanding belt 11. There is a space between the lower side of the airbag roller 22 and the upper surface of the sanding belt 11 for the wooden board 12 to pass through. A rough structure is provided on the circumferential side of the airbag roller 22, which can increase the friction between the airbag roller 22 and the wooden board 12, improve the stability of the wooden board 12 during the sanding process, and avoid uneven sanding or damage caused by slipping. The driving assembly is used to drive the plurality of airbag rollers 22 to rotate synchronously around their own axes.

[0028] Specifically, Figures 1 to 3 As shown, the wooden board 12 to be sanded is placed on the upper surface of the sanding belt 11. The reciprocating rotation of the sanding belt 11 will drive the wooden board 12 to be transported along the length direction of the sanding belt 11. When the wooden board 12 passes through the space between the airbag roller 22 and the sanding belt 11, the airbag roller 22 will exert a certain pressure downward to press the wooden board 12 against the sanding belt 11. At this time, the lower surface of the wooden board 12 can be sanded through the relative movement between the wooden board 12 and the sanding belt 11. In this process, the airbag roller 22 is driven by the driving assembly to rotate around its own axis, which can reduce the friction resistance between the airbag roller 22 and the upper surface of the wooden board 12, and reduce the wear and damage of the wooden board 12 during the sanding process. Among them, the airbag structure of the airbag roller 22 can be adjusted according to the thickness of the wooden board 12 to ensure good contact between the wooden board 12 and the sanding belt 11.

[0029] The constant pressure mechanism is used to keep the airbag roller 22 at a constant pressure when the airbag roller 22 presses the wooden board 12, so as to ensure that the airbag roller 22 applies uniform pressure to the wooden board 12. The constant pressure mechanism is provided in multiple groups, and is respectively provided corresponding to multiple airbag rollers 22. Each group of constant pressure mechanisms includes a pressure monitoring device 31 and a ventilation component. The pressure monitoring device 31 is provided inside the airbag roller 22, and is used to monitor the pressure value inside the airbag roller 22 in real time. The ventilation component is used to ventilate or exhaust the inside of the airbag roller 22 when the pressure inside the airbag roller 22 changes, so as to keep the pressure inside the airbag roller 22 at a constant state.

[0030] Specifically, Figures 1 to 5As shown, when the airbag roller 22 presses the wooden board 12 placed on the sanding belt 11, the wooden board 12 will exert a reaction force on the airbag roller 22. This reaction force will cause the airbag roller 22 to deform, that is, the volume of the airbag roller 22 will be slightly reduced. At the same time, the gas inside it will be compressed, causing the pressure inside the airbag roller 22 to change. During this process, the pressure monitoring component 31 will monitor the pressure inside the airbag roller 22 in real time and transmit the monitored pressure signal to the control system. Therefore, if the upper surface of the wooden board 12 is inclined, the degree of deformation of each airbag roller 22 will be inconsistent, thereby causing the pressure inside each airbag roller 22 to be inconsistent. When the pressure monitoring component 31 detects that the airbag roller 22 When the internal pressure is higher or lower than the set constant value, a signal is transmitted to the control system, and the control system controls the ventilation component corresponding to the airbag roller 22 to open. At this time, the ventilation component will exhaust or ventilate the interior of the airbag roller 22, causing the airbag roller 22 to contract or expand, so as to reduce or increase the pressing force of the airbag roller 22 on the wooden board 12. Therefore, by real-time monitoring and adjusting the pressure inside the airbag roller 22, the pressure inside the airbag roller 22 can be kept at a set constant state at all times to ensure that the airbag roller 22 applies uniform pressure to the wooden board 12, which helps the wooden board 12 maintain good contact with the sanding belt 11 during the sanding process, thereby improving the sanding effect and ensuring the flatness and consistency of the surface of the wooden board 12.

[0031] In some embodiments, a moving frame 23 and a driving member 24 are provided on the clamping frame 21. The moving frame 23 slides with the clamping frame 21 in the longitudinal direction. The driving member 24 is used to drive the moving frame 23 to move up and down, wherein the driving member 24 can be an electric push rod, a cylinder, etc., and multiple airbag rollers 22 are rotatably arranged on the moving frame 23.

[0032] Specifically, Figure 1 and Figure 2 As shown, before starting the sanding work, according to the thickness of the wood board 12 to be sanded and the sanding requirements, the position of the movable frame 23 is adjusted by the driving member 24 so that the distance between the airbag roller 22 and the sanding belt 11 reaches a suitable initial value. At this time, a certain space is left between the lower side of the airbag roller 22 and the upper surface of the sanding belt 11 for the wood board 12 to pass through for sanding.

[0033] In some embodiments, two sliding plates 25 are provided on the movable frame 23, and the two sliding plates 25 are both slidably matched with the movable frame 23 along the width direction of the frame 1. The two ends of the airbag roller 22 are respectively connected with mounting parts 26, and the airbag roller 22 rotates with the sliding plate 25 on the corresponding side through the mounting parts 26. A contact rod 261 is provided on the side of one of the mounting parts 26 away from the airbag roller 22, and the contact rod 261 is eccentrically set. A contact surface 231 is provided on the side of the movable frame 23 facing the contact rod 261, and the contact surface 231 is inclined from top to bottom toward the direction close to the airbag roller 22. An elastic member 251 is provided between one of the sliding plates 25 and the movable frame 23. During the rotation of the airbag roller 22, the end of the contact rod 261 can contact the contact surface 231, so that the airbag roller 22 moves back and forth along the width direction of the frame 1.

[0034] Specifically, Figures 1 to 5 As shown, when the airbag roller 22 is driven to rotate by the driving component, the contact rod 261 installed on the mounting member 26 will be driven to move synchronously. During this process, the end of the contact rod 261 contacts the contact surface 231 provided on the movable frame 23. When the contact rod 261 rotates from the upper side to the lower side, a thrust is generated along the width direction of the frame 1 under the guiding action of the inclined contact surface 231, pushing the airbag roller 22 to move to one side of the frame 1, and compressing the elastic member 251 to store force. When the contact rod 261 rotates from the lower side to the upper side, the elastic member 251 releases the stored force and pushes the airbag roller 22 to move to the other side of the frame 1. Therefore, during the rotation of the airbag roller 22, a thrust is generated between the contact rod 261 and the contact surface 231. With the cooperation of 31, the airbag roller 22 reciprocates along the width direction of the frame 1. When the airbag roller 22 reciprocates, it will exert a lateral force on the wooden board 12 below. Due to the friction between the airbag roller 22 and the wooden board 12, this lateral force will drive the wooden board 12 to reciprocate along the moving direction of the airbag roller 22, so that the contact part between the wooden board 12 and the sanding belt 11 is no longer a single and fixed area, but constantly changes within a certain range, which helps to improve the sanding effect of the wooden board 12 and make the surface of the wooden board 12 smoother and smoother. At the same time, the surface of the sanding belt 11 is more fully utilized, avoiding the situation where local areas are prematurely worn while other areas are still relatively new, improving the utilization rate of the sanding belt 11, and extending the overall service life of the sanding belt 11.

[0035] In some embodiments, the driving assembly includes a driving member 41, a gear 42, a gear 43 and a gear rack structure. The gear 42 is rotatably arranged on the frame 1, the gear 43 is connected to the mounting member 26 at the end of any airbag roller 22, the gear 42 and the gear 43 are meshed and connected, the driving member 41 is arranged on the frame 1, and the output end is connected to the gear 42. The driving member 41 can be a motor, and the gear rack structure is arranged between multiple airbag rollers 22 to achieve synchronous rotation between the multiple airbag rollers 22.

[0036] Specifically, Figures 1 to 4 As shown, when the driving member 2 41 is started to drive the gear 1 42 to rotate, the gear 2 43 can be driven to rotate through the meshing transmission between the gear 1 42 and the gear 2 43, and the mounting member 26 connected to the gear 2 43 can be driven to rotate, and the corresponding airbag roller 22 can be driven to rotate at the same time. At this time, under the action of the gear rack structure, multiple airbag rollers 22 can rotate synchronously. This synchronous rotation allows each airbag roller 22 to maintain a consistent rotation state when pressing the wooden board 12, thereby reducing the friction resistance and damage caused by the asynchronous airbag roller 22 during the sanding process of the wooden board 12, thereby improving the sanding efficiency and quality.

[0037] It should be noted that the thickness of the gear 1 42 is greater than the thickness of the gear 2 43 , so that the gear 2 43 and the gear 1 42 remain meshed during the reciprocating movement of the airbag roller 22 .

[0038] In some embodiments, the ventilation assembly includes a through rod 32 and a ventilation pipe 33. The through rod 32 is arranged inside the airbag roller 22, and a vent 321 is provided on the through rod 32, so that the interior of the through rod 32 is communicated with the interior of the airbag roller 22. One end of the ventilation pipe 33 passes through the mounting part 26 and is communicated with the interior of the through rod 32. A valve 34 is provided on the ventilation pipe 33, and the other end of the ventilation pipe 33 is connected to an external air source.

[0039] Specifically, Figures 1 to 5As shown, before the equipment is started, the pressure inside the airbag roller 22 is set at a suitable initial value to ensure that it can apply appropriate pressing force to the wooden board 12. During the sanding process, when the airbag roller 22 applies pressure to the wooden board 12, the pressure inside the airbag roller 22 will change. At this time, the pressure monitoring component 31 will detect that the pressure inside the airbag roller 22 is higher than the set value, and transmit the pressure signal to the control system. The control system will issue an instruction to open the valve 34. At this time, the gas inside the airbag roller 22 can enter the inside of the through rod 32 through the vent 321, and then be discharged to the outside through the vent pipe 33. As the gas is discharged, The airbag roller 22 gradually shrinks, and the pressing force on the wooden board 12 also decreases until the pressure returns to the set value; after completing the sanding of the wooden board 12, the airbag roller 22 withdraws the pressure applied to the wooden board 12. At this time, the pressure monitoring component 31 will detect that the pressure inside the airbag roller 22 is lower than the set value, and transmit the pressure signal to the control system. The control system issues an instruction again to open the valve 34. At this time, the external air source will supply air to the inside of the through rod 32 through the vent pipe 33, and then the gas enters the inside of the airbag roller 22 through the vent 321, causing the airbag roller 22 to expand until the pressure returns to the set value, ready for the next sanding.

[0040] In some embodiments, a dust removal component is also provided on the frame 1, and the dust removal component includes a baffle 13, a dust collecting chamber 14 and a dust suction piece. The baffle 13 is arranged on the front side of the frame 1, and a dust collecting channel is provided between the baffle 13 and the end of the sanding belt 11. The dust collecting chamber 14 is arranged inside the frame 1 and communicates with the dust collecting channel. The dust suction piece is used to suck the wood chips in the dust collecting channel into the dust collecting chamber 14. The dust suction piece can be a suction fan, a vacuum cleaner and other equipment.

[0041] Specifically, Figure 1 and Figure 2 As shown, during the sanding process, the sanding belt 11 grinds the surface of the wooden board 12, which will generate a large amount of wood chips. The wood chips will spread to the front of the frame 1 as the wooden board 12 moves. When the wood chips move with the wooden board 12 to the vicinity of the baffle 13, the baffle 13 will prevent the wood chips from flying around and guide them into the dust collecting channel. At this time, the negative pressure generated by the dust collecting part can effectively suck the wood chips from the dust collecting channel into the dust collecting chamber 14, ensuring that the wood chips will not accumulate in the channel and keep the channel unobstructed. When the wood chips in the dust collecting chamber 14 accumulate to a certain extent, the dust collecting chamber 14 can be cleaned regularly.

[0042] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A wood board sanding device, comprising a frame (1), a sanding assembly being arranged on the frame (1), the sanding assembly comprising a sanding belt (11) rotatably arranged on the frame (1), and a driving structure for driving the sanding belt (11) to reciprocate, characterized in that: It also includes a pressing mechanism and a constant pressure mechanism arranged on the frame (1); The clamping mechanism comprises a clamping frame (21), a plurality of airbag rollers (22) and a driving assembly, wherein the plurality of airbag rollers (22) are arranged in an array along the length direction of the sanding belt (11), and each airbag roller (22) is arranged on the clamping frame (21) to rotate along the width direction of the sanding belt (11), and a space through which the wooden board (12) passes is provided between the lower side of the airbag roller (22) and the upper surface of the sanding belt (11), and the driving assembly is used to drive the plurality of airbag rollers (22) to rotate synchronously around their own axes; The constant pressure mechanism is provided in a plurality of groups and is respectively arranged corresponding to a plurality of airbag rollers (22). Each group of the constant pressure mechanism comprises a pressure monitoring component (31) and a ventilation component. The pressure monitoring component (31) is arranged inside the airbag roller (22) and is used to monitor the pressure value inside the airbag roller (22) in real time. The ventilation component is used to ventilate or exhaust the inside of the airbag roller (22) when the pressure inside the airbag roller (22) changes, so that the pressure inside the airbag roller (22) is kept at a constant state.

2. A wood board sanding device according to claim 1, characterized in that: A moving frame (23) and a driving member (24) are provided on the pressing frame (21). The moving frame (23) is slidably matched with the pressing frame (21) in the longitudinal direction. The driving member (24) is used to drive the moving frame (23) to move up and down. The airbag roller (22) is rotatably provided on the moving frame (23).

3. A wood board sanding device according to claim 2, characterized in that: Two sliding plates (25) are provided on the movable frame (23), and the two sliding plates (25) are slidably matched with the movable frame (23) along the width direction of the frame (1), and the two ends of the airbag roller (22) are respectively connected with mounting members (26), and the airbag roller (22) is rotatably matched with the sliding plates (25) on the corresponding side through the mounting members (26), and a contact rod (261) is provided on a side of one of the mounting members (26) away from the airbag roller (22), and the contact rod (261) is eccentrically arranged. A contact surface (231) is provided on one side of the movable frame (23) facing the contact rod (261), and the contact surface (231) is inclined from top to bottom in a direction close to the airbag roller (22). An elastic member (251) is provided between one of the sliding plates (25) and the movable frame (23). During the rotation of the airbag roller (22), the end of the contact rod (261) can contact the contact surface (231), so that the airbag roller (22) can reciprocate along the width direction of the frame (1).

4. A wood board sanding device according to claim 3, characterized in that: The driving assembly comprises a second driving member (41), a first gear (42), a second gear (43) and a gear rack structure, wherein the first gear (42) is rotatably arranged on the frame (1), the second gear (43) is connected to a mounting member (26) at the end of any airbag roller (22), the first gear (42) is meshingly connected to the second gear (43), the second driving member (41) is arranged on the frame (1), and the output end is connected to the first gear (42), and the gear rack structure is arranged between the plurality of airbag rollers (22) for realizing synchronous rotation between the plurality of airbag rollers (22).

5. A wood board sanding device according to claim 4, characterized in that: The thickness of gear one (42) is greater than the thickness of gear two (43), so that gear two (43) and gear one (42) can remain meshed during the reciprocating movement of the airbag roller (22).

6. A wood board sanding device according to claim 3, characterized in that: The ventilation assembly comprises a through rod (32) and a ventilation pipe (33); the through rod (32) is arranged inside the airbag roller (22); a ventilation port (321) is provided on the through rod (32) so that the interior of the through rod (32) is communicated with the interior of the airbag roller (22); one end of the ventilation pipe (33) passes through the mounting member (26) and is communicated with the interior of the through rod (32); and a valve (34) is provided on the ventilation pipe (33).

7. The wood board sanding device according to claim 1, characterized in that: The frame (1) is also provided with a dust removal component, which comprises a baffle (13), a dust collecting chamber (14) and a dust suction piece. The baffle (13) is provided on the frame (1) on a side facing the moving direction of the wooden board (12), and a dust collecting channel is provided between the baffle (13) and the end of the sanding belt (11). The dust collecting chamber (14) is provided inside the frame (1) and communicates with the dust collecting channel. The dust suction piece is used to suck wood chips in the dust collecting channel into the dust collecting chamber (14).

8. The wood board sanding device according to claim 1, characterized in that: The driving structure comprises a driving motor (15) and two transmission wheels (16); the driving motor (15) is arranged on the frame (1), and the output end is connected to one of the transmission wheels (16) through a belt drive; the sanding belt (11) is sleeved on the two transmission wheels (16), and the two transmission wheels (16) are connected in transmission through the sanding belt (11).

9. The wood board sanding device according to claim 1, characterized in that: A rough structure is provided on the circumferential side of the airbag roller (22).

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