Wood board edge grinding device based on dynamic speed adjustment and control method thereof

Abstract

The invention relates to the field of wood board processing, and discloses a wood board edge grinding device based on dynamic speed regulation and a control method thereof.The device comprises a rack, a grinding wheel, a grinding wheel, a grinding wheel and a driving device, the driving mechanism is used for driving the side plates on the two sides to get close to each other and enabling the close sides of the side plates on the two sides to make contact with the two sides of the wood plate; the downward pressing mechanism comprises a swing arm and a pressing frame, and the swing arm is used for transmitting extrusion force generated when the side plates on the two sides get close to each other and ejecting the pressing frame out, so that one face of the pressing frame makes contact with one face of the wood board; and the polishing mechanism is used for polishing the wood board. The side plates on the two sides are driven by the driving mechanism to get close to each other, a wood plate is extruded to be positioned in the middle of the rack, meanwhile, the swing arm is pushed to make the pressing frame make contact with the top face of the wood plate, automatic correction and stable pressure applying on the position of the wood plate are achieved, the stability, precision and machining quality in the grinding process are remarkably improved, the defective rate is reduced, and manual intervention is reduced. And the production efficiency and the product consistency are improved.

Description

Technical Field

[0001] The present invention relates to the field of wood board processing, and specifically to a wood board edge grinding device based on dynamic speed adjustment and its control method. Background Art

[0002] During the wood board processing, edge grinding is a crucial step. The edges of unground wood boards usually have problems such as burrs, unevenness or roughness, which not only affect the appearance quality of the wood boards, but may also pose safety hazards during use. For example, burrs may cause injuries to users, and uneven edges may affect the splicing accuracy or installation effect of the wood boards. In addition, the ground edges can enhance the overall aesthetics of the wood boards, making them more in line with the requirements of high-end furniture, decorative materials and other application scenarios. Therefore, efficient and precise grinding of the wood board edges is a key step to ensure product quality and improve market competitiveness.

[0003] Although there are already various wood board edge grinding devices in the prior art, these devices still have many deficiencies in practical applications: during the grinding process, the wood boards are prone to displacement or vibration, resulting in a decrease in grinding accuracy and even damage to the wood board surface. Moreover, since the grinding heads are grinding at the same position for a long time, they are prone to wear due to local overheating, increasing the maintenance cost. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a wood board edge grinding device based on dynamic speed adjustment and its control method, which solves the problems of low wood board positioning accuracy, easy displacement or vibration during the grinding process, local overheating and wear of the grinding heads, and poor speed matching.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions: A wood board edge grinding device based on dynamic speed adjustment, comprising:

[0006] A frame, with a bracket installed in the middle and conveying rollers installed inside, and the conveying rollers are used for conveying the wood boards;

[0007] A driving mechanism, which is installed on the inner top of the bracket, and side plates are provided on both sides of the inner wall of the bracket. The driving mechanism is used to drive the two side plates to approach each other and make the adjacent sides of the two side plates contact the two sides of the wood board;

[0008] A pressing mechanism, which is installed inside the bracket and includes a swing arm and a pressing frame. The two sides of the swing arm are respectively connected to the side plate and the pressing frame, and the swing arm is used to transmit the extrusion force generated when the two side plates approach each other and push out the pressing frame, so that one side of the pressing frame contacts one side of the wood board;

[0009] A grinding mechanism, which is connected to the side plate and is used for grinding the wood board.

[0010] Preferably, correction wheels are rotatably connected to the bottoms of the two side plates near each other, and pressing wheels are rotatably connected to both sides of the bottom surface of the pressing frame.

[0011] Preferably, the driving mechanism includes a double-headed motor. Output ends on both sides of the double-headed motor are fixedly connected with threaded rods. The far sides of the two threaded rods are respectively rotatably connected to the tops of the inner walls on both sides of the bracket. The double-headed motor is fixedly connected to the middle of the top surface of the inner wall of the bracket, and the tops of the two side plates are respectively threadedly connected to the two threaded rods.

[0012] Preferably, the pressing-down mechanism further includes a cross frame. The cross frame is rotatably connected to the swing arm. A sliding rod is fixedly connected to the top surface of the pressing frame. The sliding rod is slidably connected to the cross frame. A spring is sleeved on the outer wall of the sliding rod, and the spring is located between the cross frame and the pressing frame. A guiding column is fixedly connected to the top surface of the cross frame. The guiding column penetrates through the middle of the bracket and is slidably connected to the bracket.

[0013] Preferably, guiding rods are slidably connected to both sides of the middle parts of the two side plates, and the ends of the two guiding rods are respectively fixedly connected to the inner walls on both sides of the bracket.

[0014] Preferably, the grinding mechanism includes a grinding motor. An output end of the grinding motor is fixedly connected with a grinding head, and the grinding motor is installed on the near sides of the two side plates.

[0015] Preferably, the grinding mechanism further includes a mounting frame. The mounting frame is fixedly connected to one side of the side plate. A telescopic motor is fixedly connected to the top of one side of the mounting frame. An output end of the telescopic motor is fixedly connected with a connecting block. One side of the connecting block is connected with a support arm. The support arm is slidably connected inside the mounting frame, and a mounting block is fixedly connected to one side of the support arm. The grinding motor is installed inside the mounting block.

[0016] Preferably, a baffle is fixedly connected to the middle of the bottom surface of the mounting block. The cross section of the baffle is semicircular, and the grinding head is located inside the baffle.

[0017] Preferably, a controller and an optical speed measurement sensor are installed on the top surface of the inner wall of the bracket, and the controller is electrically connected to the double-headed motor, the grinding motor, the telescopic motor and the optical speed measurement sensor.

[0018] A control method for a wood board edge grinding device based on dynamic speed adjustment includes the following steps:

[0019] Place the wood board to be ground on the top surface of the frame and use the conveying rollers to support and convey the wood board;

[0020] When the wooden board moves to the middle of the machine frame, the driving double-headed motor drives the threaded rod to rotate, causing the side plates on both sides to approach each other. At this time, the correction wheels on both sides come into contact with both sides of the outer wall of the wooden board and push the wooden board to the exact middle of the machine frame to complete the positioning of the wooden board;

[0021] Drive the grinding motor to drive the grinding head to rotate. Through the continuous conveying of the conveying rollers, after the wooden board comes into contact with the grinding head, the grinding of the edge part of the wooden board can be achieved;

[0022] During the grinding process, start the telescopic motor to drive the connecting block to make the support arm reciprocate inside the mounting frame, thereby driving the mounting block, grinding motor and grinding head to reciprocate.

[0023] The present invention provides a wooden board edge grinding device based on dynamic speed regulation and its control method. It has the following beneficial effects:

[0024] 1. In the present invention, the driving mechanism drives the side plates on both sides to approach each other, and the side plates are used to squeeze the wooden board to position it in the exact middle of the machine frame. At the same time, the squeezing action of the side plates will also push the swing arm, so that the pressing frame comes into contact with the top surface of the wooden board. This not only realizes the automatic correction of the position of the wooden board, but also applies a stable pressure to the wooden board through the pressing frame, significantly improving the stability of the wooden board during the grinding process, enhancing the grinding accuracy and processing quality, reducing the defective rate, reducing the need for manual intervention, and ultimately improving the production efficiency and product consistency.

[0025] 2. In the present invention, by starting the telescopic motor to drive the connecting block, the support arm reciprocates inside the mounting frame, and then drives the mounting block, grinding motor and grinding head to move synchronously and reciprocally, so that the grinding head can uniformly contact the surface of the wooden board, avoiding grinding at the same position for a long time. By evenly distributing the grinding contact points, it can effectively prevent the local overheating of the grinding head, thereby prolonging the service life of the grinding head.

[0026] 3. In the present invention, the optical speed measurement sensor is used to detect the conveying speed of the wooden board in real time and transmit the data to the controller. The controller dynamically adjusts the operation of the telescopic motor and the grinding motor based on the displacement speed of the wooden board to ensure that the reciprocating swing speed of the grinding head and its own rotation speed are precisely matched with the moving speed of the wooden board. Therefore, it effectively avoids problems such as uneven grinding, damage to the surface of the wooden board or excessive wear of the grinding head caused by speed mismatch, thereby significantly improving the grinding accuracy and processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0028] Figure 2 is a partial structure split diagram of the bracket of the present invention;

[0029] Figure 3 is a partial structure schematic diagram of the downward pressing mechanism of the present invention;

[0030] Figure 4 Partial structural split of the grinding mechanism of the present invention;

[0031] Figure 5 Partial structural split diagram of the driving mechanism of the present invention;

[0032] Figure 6 Partial structural split diagram of the grinding head of the present invention;

[0033] Figure 7 Partial structural split diagram of the pressing mechanism of the present invention;

[0034] Figure 8 Top view of the baffle of the present invention.

[0035] Wherein, 1, frame; 2, bracket; 3, driving mechanism; 301, double-headed motor; 302, threaded rod; 4, side plate; 5, grinding mechanism; 501, mounting frame; 502, grinding motor; 503, grinding head; 504, telescopic motor; 505, connecting block; 506, support arm; 507, mounting block; 508, baffle; 6, pressing mechanism; 601, swing arm; 602, pressing frame; 603, pressing wheel; 604, cross frame; 605, sliding rod; 606, spring; 607, guiding column; 7, correcting wheel; 8, guiding rod; 9, conveying roller; 10, controller; 11, optical speed measurement sensor. Specific embodiments

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the specification of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] For a better understanding of the present invention, the above content will be described in detail below with specific embodiments.

[0038] Embodiment 1: Please refer to the attached Figures 1 - 8, an embodiment of the present invention provides a wood board edge grinding device based on dynamic speed regulation, including: a frame 1, with a bracket 2 installed in the middle thereof and a conveying roller 9 installed inside, and the conveying roller 9 is used for conveying the wood board; a driving mechanism 3, which is installed at the inner top of the bracket 2, and side plates 4 are arranged on both sides of the inner wall of the bracket 2, and the driving mechanism 3 is used to drive the two side plates 4 to approach each other and make the adjacent sides of the two side plates 4 contact the two sides of the wood board; a pressing mechanism 6, which is installed inside the bracket 2, including a swing arm 601 and a pressing frame 602, and both sides of the swing arm 601 are respectively connected to the side plate 4 and the pressing frame 602, and the swing arm 601 is used to transmit the extrusion force generated when the two side plates 4 approach each other and push out the pressing frame 602, so that one side of the pressing frame 602 contacts one side of the wood board; a grinding mechanism 5, which is connected to the side plate 4 and is used for grinding the wood board.

[0039] In this embodiment, the wood board can be conveyed by the conveying roller 9 inside the frame 1 so that it enters below the bracket 2, and the driving mechanism 3 can be used to drive the two side plates 4 to approach each other and make the adjacent sides of the two side plates 4 contact the two sides of the wood board. The extrusion of the two side plates 4 can make the wood board located in the middle of the bracket 2. At this time, the positioning of the wood board can be completed. While the two side plates 4 approach each other, they will squeeze the swing arm 601. At this time, the swing arm 601 transmits the extrusion force generated when the two side plates 4 approach each other and pushes out the pressing frame 602, so that one side of the pressing frame 602 contacts one side of the wood board. At this time, the wood board can be pressed tightly. Therefore, while correcting the position of the wood board, by squeezing the template, the stability of the wood board when being ground is improved.

[0040] Please refer to the appendix Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 , correction wheels 7 are rotatably connected to the bottoms of the adjacent sides of the two side plates 4, and pressing wheels 603 are rotatably connected to both sides of the bottom surface of the pressing frame 602.

[0041] In this embodiment, by using the correction wheels 7 and the pressing wheels 603 to contact the surface of the wood board and using the rotation of the correction wheels 7 and the rollers, friction with the wood board can be avoided.

[0042] Please refer to the appendix Figure 2 , Figure 3 and Figure 5, the driving mechanism 3 includes a double-headed motor 301. Output ends on both sides of the double-headed motor 301 are fixedly connected with threaded rods 302. The far sides of the threaded rods 302 on both sides are respectively rotatably connected to the tops of the inner walls on both sides of the bracket 2. The double-headed motor 301 is fixedly connected to the middle of the top surface of the inner wall of the bracket 2, and the tops of the two side plates 4 are respectively threadedly connected to the threaded rods 302 on both sides. Both sides of the middle of the two side plates 4 are slidably connected with guide rods 8, and the ends of the guide rods 8 on both sides are respectively fixedly connected to the inner walls on both sides of the bracket 2.

[0043] In this embodiment, after driving the double-headed motor 301, the threaded rods 302 on both sides can be driven to rotate. Subsequently, the threaded rods 302 will drive the two side plates 4 to slide inside the bracket 2, thereby achieving the purpose of the two side plates 4 approaching each other. And the guide rod 8 can be used to guide the moving direction of the side plate 4, thereby improving the stability of the side plate 4 during movement.

[0044] Please refer to the appendix Figure 1 , Figure 3 , Figure 5 and Figure 7 , the pressing mechanism 6 further includes a cross frame 604. The cross frame 604 is rotatably connected to the swing arm 601. The top surface of the pressing frame 602 is fixedly connected with a sliding rod 605. The sliding rod 605 is slidably connected to the cross frame 604. A spring 606 is sleeved on the outer wall of the sliding rod 605, and the spring 606 is located between the cross frame 604 and the pressing frame 602. The top surface of the cross frame 604 is fixedly connected with a guide post 607. The guide post 607 penetrates through the middle of the bracket 2 and is slidably connected to the bracket 2.

[0045] In this embodiment, when the two side plates 4 approach each other, they will squeeze the swing arm 601. The swing arm 601 can be used to squeeze the cross frame 604 and the press, so that the pressing wheel 603 contacts the wooden board. And when the pressing wheel 603 contacts the top surface of the wooden board, the pressing frame 602 will drive the sliding rod 605 to slide inside the cross frame 604 to compress the spring 606. At this time, the elastic force of the spring 606 will squeeze the pressing frame 602 so that the outer wall of the pressing wheel 603 presses against the top surface of the wooden board.

[0046] Please refer to the appendix Figure 4 - and Figure 6, the grinding mechanism 5 includes a grinding motor 502. The output end of the grinding motor 502 is fixedly connected with a grinding head 503, and the grinding motor 502 is installed on the adjacent sides of the two side plates 4. The grinding mechanism 5 further includes a mounting bracket 501. The mounting bracket 501 is fixedly connected to one side of the side plate 4. The top of one side of the mounting bracket 501 is fixedly connected with a telescopic motor 504. The output end of the telescopic motor 504 is fixedly connected with a connecting block 505. One side of the connecting block 505 is connected with a support arm 506. The support arm 506 is slidably connected inside the mounting bracket 501. One side of the support arm 506 is fixedly connected with a mounting block 507, and the grinding motor 502 is installed inside the mounting block 507. The middle of the bottom surface of the mounting block 507 is fixedly connected with a baffle 508. The cross-section of the baffle 508 is semicircular, and the grinding head 503 is located inside the baffle 508.

[0047] In this embodiment, driving the grinding motor 502 can drive the grinding head 503 to rotate to grind the edge of the wooden board. During the grinding process, starting the telescopic motor 504 drives the connecting block 505 to make the support arm 506 reciprocate inside the mounting bracket 501, thereby driving the mounting block 507, the grinding motor 502, and the grinding head 503 to move synchronously and reciprocally. This can make the outside of the grinding head 503 all contact the edge of the wooden board, avoiding local overheating or excessive wear caused by one part of the outer wall of the grinding head 503 contacting the wooden board for a long time, thereby improving the grinding accuracy and processing quality. And the baffle 508 can block the debris generated by grinding, thereby avoiding the phenomenon of debris splashing.

[0048] Working principle: Place the wooden board to be ground on the top surface of the frame 1, use the conveying roller 9 to support and convey the wooden board, and ensure that the conveying roller 9 conveys the wooden board to the lower part of the bracket 2;

[0049] When the wooden board moves to the lower part of the bracket 2, at this time, drive the double-headed motor 301 to drive the threaded rod 302 to rotate. Using the threaded rod 302, the side plate 4 can be driven to slide inside the bracket 2, so that the two side plates 4 approach each other. At this time, the two side plates 4 will drive the two correction wheels 7 to approach each other, so that the correction wheels 7 contact the outer walls on both sides of the wooden board. At this time, the two correction wheels 7 will push the wooden board to the exact middle of the frame 1 to complete the position correction of the wooden board. At the same time, the two side plates 4 will also squeeze the two swing arms 601, and through the squeezing action, the swing arms 601 are pushed to swing, so that the swing arms 601 drive the pressing frame 602 to move down. Subsequently, the pressing frame 602 will drive the guide post 607 to slide inside the bracket 2, and at the same time drive the pressing wheel 603 to contact the top surface of the wooden board;

[0050] When the pressing wheel 603 contacts the top surface of the wooden board, at this time, the pressing frame 602 will drive the sliding rod 605 to slide inside the cross frame 604, thereby compressing the spring 606. At this time, the elastic force of the spring 606 will squeeze the pressing frame 602 so that the outer wall of the pressing wheel 603 is pressed against the top surface of the wooden board;

[0051] Subsequently, the conveying roller 9 is used to continue conveying the wooden board. At this time, the correction wheel 7 and the pressing wheel 603 will rotate automatically with the conveying of the wooden board. Finally, the polishing motor 502 is driven to drive the polishing head 503 to rotate. Therefore, as the conveying roller 9 continues to convey the wooden board, the edge of the wooden board can be brought into contact with the polishing head 503, and the edge of the wooden board can be polished.

[0052] During the polishing process, the telescopic motor 504 is started to drive the connecting block 505, so that the support arm 506 reciprocates inside the mounting frame 501, and then the mounting block 507, the polishing motor 502 and the polishing head 503 are driven to move synchronously and reciprocally. The outer part of the polishing head 503 can be brought into contact with the edge of the wooden board, avoiding local overheating or excessive wear caused by the outer wall of the polishing head 503 contacting the wooden board at one place for a long time, and thus improving the polishing accuracy and processing quality.

[0053] Embodiment 2: Based on Embodiment 1, a controller 10 and an optical speed sensor 11 are installed on the top surface of the inner wall of the bracket, and the controller 10 is electrically connected to the double-headed motor 301, the polishing motor 502, the telescopic motor 504 and the optical speed sensor 11.

[0054] Therefore, through the optical speed sensor 11, the conveying speed of the wooden board during polishing can be detected in real time, and the data is transmitted to the controller 10. The controller 10 can dynamically adjust the operating conditions of the telescopic motor 504 and the polishing motor 502 according to the data, ensuring that the reciprocating swing speed of the polishing head 503 and its own rotation speed are precisely matched with the moving speed of the wooden board, and further optimizing the polishing effect. The specific formula is:

[0055] In order to achieve the precise matching of the reciprocating swing speed of the polishing head 503 and its own rotation speed with the moving speed of the wooden board, dynamic adjustment can be carried out based on the following formula:

[0056] v 打磨头 = k·v 木板 ;

[0057] where, v 打磨头 is the reciprocating swing speed of the polishing head 503 (unit: m / s); v 木板 is the conveying speed of the wooden board (unit: m / s); k is the adjustment coefficient, which is dynamically calculated by the controller 10 according to the diameter of the polishing head 503 and the polishing depth parameter.

[0058] At the same time, the rotation speed of the polishing head 503 itself can be determined by the following formula:

[0059]

[0060] where: n 打磨头 is the rotation speed of the polishing head 503 (unit: rpm); v 木板V is the conveying speed of the wooden board (unit: m / s); D is the diameter of the grinding head 503 (unit: cm); π is the pi (take 3.14); C is the speed regulation coefficient.

[0061] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wooden board edge grinding device based on dynamic speed regulation, characterized in that Comprising: A frame (1) with a bracket (2) installed in the middle thereof and a conveying roller (9) installed inside. The conveying roller (9) is used for conveying wooden boards. A driving mechanism (3) installed at the inner top of the bracket (2). Side plates (4) are provided on both sides of the inner wall of the bracket (2). The driving mechanism (3) is used to drive the two side plates (4) to approach each other and make the adjacent sides of the two side plates (4) contact the two sides of the wooden board. A pressing mechanism (6) installed inside the bracket (2), including a swing arm (601) and a pressing frame (602). The two sides of the swing arm (601) are respectively connected to the side plate (4) and the pressing frame (602), and the swing arm (601) is used to transmit the extrusion force generated when the two side plates (4) approach each other and push out the pressing frame (602) so that one side of the pressing frame (602) contacts one side of the wooden board. A grinding mechanism (5) connected to the side plate (4) and used for grinding the wooden board.

2. The wood board edge grinding device based on dynamic speed regulation according to claim 1, wherein, Correction wheels (7) are rotatably connected to the bottoms of the adjacent sides of the two side plates (4), and pressing wheels (603) are rotatably connected to both sides of the bottom surface of the pressing frame (602).

3. The wood board edge grinding device based on dynamic speed regulation according to claim 1, characterized in that, The driving mechanism (3) includes a double-headed motor (301). Output ends on both sides of the double-headed motor (301) are fixedly connected with threaded rods (302). The far sides of the two threaded rods (302) are respectively rotatably connected to the tops of the inner walls on both sides of the bracket (2). The double-headed motor (301) is fixedly connected to the middle of the top surface of the inner wall of the bracket (2), and the tops of the two side plates (4) are respectively threadedly connected to the two threaded rods (302).

4. The wood board edge grinding device based on dynamic speed regulation according to claim 2, wherein The pressing mechanism (6) further includes a cross frame (604). The cross frame (604) is rotatably connected to the swing arm (601). A sliding rod (605) is fixedly connected to the top surface of the pressing frame (602). The sliding rod (605) is slidably connected to the cross frame (604). A spring (606) is sleeved on the outer wall of the sliding rod (605), and the spring (606) is located between the cross frame (604) and the pressing frame (602). A guiding column (607) is fixedly connected to the top surface of the cross frame (604). The guiding column (607) penetrates through the middle of the bracket (2) and is slidably connected to the bracket (2).

5. The wood board edge grinding device based on dynamic speed regulation according to claim 1, characterized in that, Guide rods (8) are slidably connected to both sides of the middle parts of the two side plates (4), and the end parts of the two guide rods (8) are respectively fixedly connected to the inner walls on both sides of the bracket (2).

6. The wood board edge grinding device based on dynamic speed regulation according to claim 3, wherein, The grinding mechanism (5) includes a grinding motor (502). The output end of the grinding motor (502) is fixedly connected with a grinding head (503), and the grinding motor (502) is installed on the adjacent sides of the two side plates (4).

7. The wood board edge grinding device based on dynamic speed regulation according to claim 6, characterized in that, The grinding mechanism (5) further includes a mounting frame (501), the mounting frame (501) is fixedly connected to one side of the side plate (4), a telescopic motor (504) is fixedly connected to the top of one side of the mounting frame (501), the output end of the telescopic motor (504) is fixedly connected to a connecting block (505), one side of the connecting block (505) is connected to a support arm (506), the support arm (506) is slidably connected inside the mounting frame (501), and a mounting block (507) is fixedly connected to one side of the support arm (506), and the grinding motor (502) is installed inside the mounting block (507).

8. The wood board edge grinding device based on dynamic speed regulation according to claim 7, wherein, A baffle (508) is fixedly connected to the middle of the bottom surface of the mounting block (507), the cross-section of the baffle (508) is semicircular, and the grinding head (503) is located inside the baffle (508).

9. The wood board edge grinding device based on dynamic speed regulation according to claim 7, wherein, A controller (10) and an optical speed sensor (11) are installed on the top surface of the inner wall of the bracket (2), and the controller (10) is electrically connected to the double-headed motor (301), the grinding motor (502), the telescopic motor (504) and the optical speed sensor (11).

10. A control method for a wood board edge grinding device based on dynamic speed regulation, based on the wood board edge grinding device based on dynamic speed regulation according to any one of claims 1-9, characterized in that, It includes the following steps: Place the wooden board to be ground on the top surface of the frame (1) and use the conveying roller (9) to support and convey the wooden board; When the wooden board moves to the middle of the frame (1), drive the double-headed motor (301) to drive the threaded rod (302) to rotate, so that the two side plates (4) approach each other. At this time, the two correction wheels (7) contact the two outer walls of the wooden board and push the wooden board to the exact middle of the frame (1) to complete the positioning of the wooden board; Drive the grinding motor (502) to drive the grinding head (503) to rotate. After the wooden board contacts the grinding head (503) through the continuous conveying of the conveying roller (9), the edge part of the wooden board can be ground; During the grinding process, start the telescopic motor (504) to drive the connecting block (505) to make the support arm (506) reciprocate inside the mounting frame (501), thereby driving the mounting block (507), the grinding motor (502) and the grinding head (503) to reciprocate.

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