A device for repairing surface defects of a wood board

Abstract

A kind of wood board surface defect repairing device, including repair leveling mechanism and repair mould.The repair leveling mechanism is located in repair mould, the repair leveling mechanism includes leveling scraper, by setting leveling scraper and wood board surface always keep contact, while leveling scraper is rotationally arranged in cylindrical mould, when leveling scraper rotates, can the repair liquid on wood board surface be evenly applied, ensure that the wood board surface after repair keeps flatness;At the same time, the shaft both ends and the inner wall of cylindrical mould always keep contact when leveling scraper rotates, avoid repair liquid to be squeezed into the gap between leveling scraper and cylindrical mould, leveling scraper finds the repair liquid on wood board surface during rotation, while the centrifugal force generated when rotating expels the excess repair liquid into cylindrical mould, avoid the excess repair liquid to be left on wood board surface.

Description

Technical Field

[0001] This invention belongs to the technical field of wood panel repair equipment, specifically referring to a device for repairing defects on the surface of wood panels. Background Technology

[0002] Wood panels are a common building and furniture material. During the growth process, the raw materials for wood panels may have various irregular defects, which can lead to problems such as dents and cracks on the surface of the wood panels after they are made. Therefore, it is necessary to repair the surface defects of the wood panels.

[0003] Existing repair methods mostly involve injecting a special repair liquid for wood into the surface defects of the wood and then using a trowel to level it, similar to leveling a wall. However, since the surface defects on wood are usually small, it is not necessary to apply repair liquid to the entire surface of the wood. After repair, excess repair liquid remains on the surface of the wood, affecting the overall flatness of the wood. When using a scraper to remove the residual repair liquid, it is necessary to push the repair liquid to the edge of the wood, which will also cause more repair liquid to come into contact with and adhere to the surface of the wood, damaging the flatness and cleanliness of the wood. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a device for repairing defects on the surface of wooden boards, so as to at least partially solve the above-mentioned technical problems.

[0005] The technical solution adopted by this invention is as follows: This invention proposes a device for repairing defects on the surface of a wooden board, including a repair and leveling mechanism and a repair mold. The repair and leveling mechanism is disposed in the repair mold and includes a leveling scraper. The bottom end of the leveling scraper contacts the surface of the wooden board. The repair mold includes a cylindrical mold, and the length of the repair and leveling mechanism is equal to the inner diameter of the cylindrical mold. The leveling scraper is provided with a central rotating shaft, which is rotatably located at the central axis of the cylindrical mold. The leveling scraper rotates inside the cylindrical mold through the central rotating shaft, and both ends of the central rotating shaft contact the inner wall of the cylindrical mold. The leveling scraper is provided with a balancing elastic component, which is used to maintain the contact between the bottom end of the leveling scraper and the surface of the wooden board.

[0006] Furthermore, the balancing elastic component includes a top sleeve, a bottom connecting rod, and a compression spring. The bottom connecting rod is fixedly connected to the leveling scraper, the top sleeve is slidably disposed on the bottom connecting rod, and the two ends of the compression spring are respectively connected to the top sleeve and the bottom connecting rod. The top sleeve contacts the cylindrical mold, and the elastic force generated by the compression spring presses the top sleeve against the cylindrical mold.

[0007] Furthermore, the top surface of the cylindrical mold is provided with a central through hole, the central axis of the central through hole coincides with the central axis of the cylindrical mold, and the central rotating shaft is rotatably disposed in the central through hole; the central rotating shaft is provided with a central shoulder and a sleeve connecting rod, the central shoulder is engaged in the central through hole, and the sleeve connecting rod is connected to the top sleeve.

[0008] Furthermore, a rotating handle is fixedly provided at the top of the central rotating shaft.

[0009] Furthermore, it also includes a repair fluid supply mechanism. The top of the cylindrical mold is provided with a repair fluid inlet, and the repair fluid supply mechanism is connected to the repair fluid inlet. The repair fluid inlet is used to add wood board repair fluid, and the bottom of the cylindrical mold is provided with a fully penetrating bottom discharge port, which is used to discharge excess repair fluid.

[0010] Furthermore, the cylindrical mold is provided with a bottom collecting trough on its exterior. The bottom collecting trough is located at the bottom of the cylindrical mold and corresponds to the position of the bottom discharge port. The bottom collecting trough is used to receive excess repair fluid discharged from the bottom discharge port.

[0011] Furthermore, it also includes a mold fixing mechanism, wherein the repair mold is provided with a fixing bracket and a carrying handle, the mold fixing mechanism is fixedly disposed in the fixing bracket, and the mold fixing mechanism is used to fix the repair mold on the surface of the wooden board; the carrying handle is used to carry the repair mold.

[0012] Furthermore, the mold fixing mechanism includes an air extraction cylinder, an air extraction piston, and a fixed suction cup. The air extraction piston is slidably disposed in the air extraction cylinder. The bottom of the air extraction cylinder is provided with an air extraction hole. The mold fixing mechanism is disposed at the bottom of the air extraction cylinder. The air extraction piston is provided with a piston rod. The air extraction cylinder is provided with a one-way exhaust valve, which connects the inside of the air extraction cylinder with the outside atmosphere.

[0013] Furthermore, the repair fluid supply mechanism includes a repair fluid storage tank, a repair fluid supply pump, and a supply hose. The repair fluid supply pump is connected to the repair fluid storage tank, and the two ends of the supply hose are respectively connected to the repair fluid supply pump and the repair fluid inlet. The repair fluid supply pump delivers the repair fluid in the repair fluid storage tank to the repair fluid inlet through the supply hose.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This invention features a leveling scraper that maintains constant contact with the wood surface. The scraper rotates within a cylindrical mold, ensuring that the repair fluid is evenly applied to the surface and maintaining a smooth finish after repair. Furthermore, the scraper's shaft remains in constant contact with the inner wall of the cylindrical mold, preventing repair fluid from being squeezed into the gap between the scraper and the mold. The scraper's rotation levels the surface, and the centrifugal force generated during rotation discharges excess repair fluid into the mold, preventing residue on the wood surface. Attached Figure Description

[0016] Figure 1 A three-dimensional representation of a wood board surface defect repair device proposed in an embodiment of the present invention. Figure 1 ;

[0017] Figure 2 This is a front view of a wood board surface defect repair device according to an embodiment of the present invention;

[0018] Figure 3 This is an exploded view of a wood board surface defect repair device according to an embodiment of the present invention;

[0019] Figure 4 This is a top view of a wood board surface defect repair device according to an embodiment of the present invention;

[0020] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0021] Figure 6 for Figure 5 Enlarged view of point I in the middle;

[0022] Figure 7 for Figure 5 Enlarged view at point II;

[0023] Figure 8 A three-dimensional representation of a wood board surface defect repair device proposed in an embodiment of the present invention. Figure 2 ;

[0024] Figure 9 for Figure 8 Enlarged view of section III.

[0025] Among them, 100 is the repair and leveling mechanism, 200 is the repair mold, 300 is the mold fixing mechanism, 400 is the repair fluid supply mechanism, 101 is the leveling scraper, 102 is the balancing elastic component, 103 is the central rotating shaft, 104 is the top sleeve, 105 is the bottom connecting rod, 106 is the compression spring, 107 is the central shoulder, 108 is the sleeve connecting rod, 109 is the rotating handle, 201 is the cylindrical mold, 202 is the fixed bracket, 203 is the handling handle, 204 is the central through hole, 205 is the repair fluid inlet, 206 is the bottom discharge port, 207 is the bottom collection trough, 301 is the air pump, 302 is the air pump piston, 303 is the fixed suction cup, 304 is the air extraction hole, 305 is the piston rod, 401 is the repair fluid storage tank, 402 is the repair fluid supply pump, and 403 is the supply hose.

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] This invention is mainly used to solve the technical problem of excess repair fluid adhering to the surface of wood boards and being difficult to remove, thus affecting the flatness of the wood board surface when repairing defects on the surface of wood boards using repair fluid.

[0030] like Figures 1-9As shown, this embodiment includes a repair and leveling mechanism 100 and a repair mold 200. The repair and leveling mechanism 100 is disposed in the repair mold 200. The repair and leveling mechanism 100 includes a leveling scraper 101, the bottom end of which contacts the surface of the wooden board. The repair mold 200 includes a cylindrical mold 201. The length of the repair and leveling mechanism 100 is equal to the inner diameter of the cylindrical mold 201. The leveling scraper 101 is provided with a central rotating shaft 103, which is rotatably located at the central axis of the cylindrical mold 201. The leveling scraper 101 rotates inside the cylindrical mold 201 through the central rotating shaft 103. Both ends of the central rotating shaft 103 contact the inner wall of the cylindrical mold 201. The leveling scraper 101 is provided with a balancing elastic component 102, which is used to maintain the contact between the bottom end of the leveling scraper 101 and the surface of the wooden board.

[0031] In this embodiment, the leveling scraper 101 is always in contact with the surface of the wooden board, and the leveling scraper 101 is rotated in the cylindrical mold 201. When the leveling scraper 101 rotates, it can spread the repair liquid evenly on the surface of the wooden board, ensuring that the surface of the repaired wooden board remains flat. At the same time, the cylindrical mold 201 is cylindrical, and when the leveling scraper 101 rotates, the two ends of the rotating shaft are always in contact with the inner wall of the cylindrical mold 201, preventing the repair liquid from being squeezed into the gap between the leveling scraper 101 and the cylindrical mold 201. During the rotation of the leveling scraper 101, the repair liquid on the surface of the wooden board is leveled, and the centrifugal force generated during the rotation discharges the excess repair liquid into the cylindrical mold 201, avoiding the residue of excess repair liquid on the surface of the wooden board.

[0032] The balancing elastic component 102 proposed in this embodiment is symmetrically arranged on both sides of the rotating shaft of the leveling scraper 101. The elastic force generated by the balancing elastic component 102 presses the leveling scraper 101 onto the surface of the wood board. At the same time, since the balancing elastic component 102 is symmetrically arranged, it ensures that the bottom end of the leveling scraper 101 is in complete contact with the surface of the wood board, avoiding gaps between the leveling scraper 101 and the surface of the wood board.

[0033] In this embodiment, the location of the defect on the surface of the wood board is first determined, and the cylindrical mold 201 is placed on the defect location on the surface of the wood board to ensure that the cylindrical mold 201 completely covers the surface defect of the wood board. At this time, the balance elastic component 102 generates elastic force to press the bottom end of the leveling scraper 101 onto the surface of the wood board.

[0034] Repair fluid is then poured onto the surface of the wooden board, and a rotational torque is applied to the central rotating shaft 103. The central rotating shaft 103 drives the leveling scraper 101 to rotate in the cylindrical mold 201. During the rotation of the leveling scraper 101, the repair fluid is pushed to flow on the surface of the wooden board, filling and repairing the surface defects of the wooden board. As the leveling scraper 101 rotates, the repair fluid is pushed to continuously circulate on the surface of the wooden board until all surface defects are repaired. There are no gaps in the remaining repair fluid. At this time, the centrifugal force generated by the rotation of the leveling scraper 101 throws the excess repair fluid onto the cylindrical mold 201, thereby draining the excess repair fluid into the cylindrical mold 201. No repair fluid will remain on the surface of the wooden board, thus ensuring that the surface of the wooden board remains flat and is not contaminated.

[0035] The balanced elastic component 102 proposed in this embodiment includes a top sleeve 104, a bottom connecting rod 105, and a compression spring 106. The bottom connecting rod 105 is fixedly connected to the leveling scraper 101. The top sleeve 104 is slidably disposed on the bottom connecting rod 105. The two ends of the compression spring 106 are respectively connected to the top sleeve 104 and the bottom connecting rod 105. The top sleeve 104 is in contact with the cylindrical mold 201. The elastic force generated by the compression spring 106 presses the top sleeve 104 against the cylindrical mold 201.

[0036] The balanced elastic component 102 structure proposed in this embodiment includes a top sleeve 104, a bottom connecting rod 105, and a compression spring 106. The top sleeve 104 and the bottom connecting rod 105 can move relative to each other. The compression spring 106 is located between the top sleeve 104 and the bottom connecting rod 105. In actual use, the top sleeve 104 rests on the top surface of the cylindrical mold 201, and the bottom connecting rod 105 is located on the leveling scraper 101. The elastic force generated by the compression spring 106 presses the top sleeve 104 against the top surface of the cylindrical mold 201. The reaction force generated is also applied to the leveling scraper 101 through the bottom connecting rod 105, thereby pressing the bottom connecting rod 105 against the surface of the wooden board and ensuring that the leveling scraper 101 maintains good contact with the surface of the wooden board.

[0037] Meanwhile, two balancing elastic components 102 are set on the leveling scraper 101. The two balancing elastic components 102 are equidistant from the rotation axis of the leveling scraper 101. The generated balancing torque can prevent the leveling scraper 101 from warping and deflecting, and improve the contact effect between the leveling scraper 101 and the wood surface.

[0038] The cylindrical mold 201 proposed in this embodiment has a central through hole 204 on its top surface. The central axis of the central through hole 204 coincides with the central axis of the cylindrical mold 201. The central rotating shaft 103 is rotatably disposed in the central through hole 204. The central rotating shaft 103 is provided with a central shoulder 107 and a sleeve connecting rod 108. The central shoulder 107 is engaged with the central through hole 204, and the sleeve connecting rod 108 is connected to the top sleeve 104.

[0039] The cylindrical mold 201 proposed in this embodiment has a central through hole 204 at the central axis position, and the central rotating shaft 103 is rotatably mounted on the central through hole 204. At the same time, a central shoulder 107 is provided on the central rotating shaft 103 to ensure that the central rotating shaft 103 will not slip out of the central through hole 204.

[0040] Meanwhile, a sleeve connecting rod 108 is provided on the central rotating shaft 103. The sleeve connecting rod 108 is connected to the top sleeve 104. When the central rotating shaft 103 drives the leveling scraper 101 to rotate, it can also drive the balance elastic component 102 to rotate with the leveling scraper 101 at the same angular velocity, so that the leveling scraper 101 can maintain good contact with the surface of the wooden board when rotating.

[0041] In this embodiment, a rotating handle 109 is provided at the top of the central rotating shaft 103. In actual use, the operator can apply rotational torque to the central rotating shaft 103 by rotating the handle 109. When repairing defects in wooden boards with fewer defects, using the rotating handle 109 can reduce the overall weight of the repair and leveling mechanism 100, making the surface defect repair device lighter and easier to move between multiple wooden boards.

[0042] The rotating handle 109 proposed in this embodiment can also be disassembled and replaced with automated equipment such as a motor. When repairing wooden boards with a large number of defects, the rotating handle 109 can be replaced with a torque motor or a hydraulic motor. Although this increases the complexity and weight of the overall structure to some extent, it can significantly reduce the workload of the operator and improve the efficiency of surface defect repair.

[0043] The surface defect repair device proposed in this embodiment also includes a repair fluid supply mechanism 400. The top of the cylindrical mold 201 is provided with a repair fluid inlet 205, and the repair fluid supply mechanism 400 is connected to the repair fluid inlet 205. The repair fluid inlet 205 is used to add wood board repair fluid, and the bottom of the cylindrical mold 201 is provided with a fully penetrating bottom discharge port 206, which is used to discharge excess repair fluid.

[0044] In practical use, the repair fluid supply mechanism 400 supplies repair fluid to the repair fluid inlet 205. The repair fluid falls onto the surface of the wooden board through the repair fluid inlet 205. The leveling scraper 101 rotates to push the repair fluid to flow on the surface of the wooden board. During the flow, the repair fluid repairs the defects on the surface of the wooden board. After all the surface defects on the wooden board are repaired, the leveling scraper 101 pushes the excess repair fluid to the bottom discharge port 206. The excess repair fluid enters the cylindrical mold 201 through the bottom discharge port 206 for collection.

[0045] In this embodiment, a repair fluid inlet 205 is provided at the top to add repair fluid, ensuring that the repair fluid can be accurately added to the defect location of the wood board and reducing the waste of repair fluid. At the same time, a bottom discharge port 206 is provided to discharge excess repair fluid, avoiding the repair fluid residue on the surface of the wood board, which would affect the flatness and cleanliness of the wood board surface.

[0046] The cylindrical mold 201 proposed in this embodiment is provided with a bottom material collection groove 207 on the outside. The bottom material collection groove 207 is located at the bottom of the cylindrical mold 201 and corresponds to the position of the bottom discharge port 206. The bottom material collection groove 207 is used to receive the excess repair fluid discharged from the bottom discharge port 206.

[0047] In this embodiment, the leveling scraper 101 rotates to push the repair fluid to flow on the surface of the wooden board. After all surface defects on the wooden board are repaired, the leveling scraper 101 pushes the excess repair fluid to the bottom discharge port 206. The excess repair fluid enters the bottom collection tank 207 through the bottom discharge port 206 for collection, thus realizing the cleaning and recycling of excess repair fluid.

[0048] The surface defect repair device proposed in this embodiment also includes a mold fixing mechanism 300. The repair mold 200 is provided with a fixing bracket 202 and a handling handle 203. The mold fixing mechanism 300 is fixed in the fixing bracket 202. The mold fixing mechanism 300 is used to fix the repair mold 200 on the surface of the wooden board, and the handling handle 203 is used to transport the repair mold 200.

[0049] In this embodiment, the cylindrical mold 201 can be moved by the carrying handle 203. After the cylindrical mold 201 is moved to the location of the defect on the upper surface of the wooden board, the mold fixing mechanism 300 fixes the cylindrical mold 201 on the surface of the wooden board to prevent the cylindrical mold 201 from shifting during surface repair, thereby ensuring the effect of surface repair.

[0050] The mold fixing mechanism 300 proposed in this embodiment includes an air extraction cylinder 301, an air extraction piston 302, and a fixing suction cup 303. The air extraction piston 302 is slidably disposed in the air extraction cylinder 301. The bottom of the air extraction cylinder 301 is provided with an air extraction hole 304. The mold fixing mechanism 300 is disposed at the bottom of the air extraction cylinder 301. The air extraction piston 302 is provided with a piston rod 305. The air extraction cylinder 301 is provided with a one-way exhaust valve 306, which connects the interior of the air extraction cylinder 301 with the outside atmosphere.

[0051] When the cylindrical mold 201 needs to be fixed in this embodiment, the piston rod 305 pulls the suction piston 302 upward, and the air above the suction piston 302 in the suction cylinder 301 is discharged through the one-way exhaust valve 306. At the same time, a negative pressure is generated below the suction piston 302 in the suction cylinder 301. The negative pressure environment draws the air in the fixing suction cup 303 into the suction cylinder 301 through the suction hole 304. The fixing suction cup 303 is used to attach the mold fixing mechanism 300 to the surface of the wooden board, thereby fixing the cylindrical mold 201.

[0052] The repair fluid supply mechanism 400 proposed in this embodiment includes a repair fluid storage tank 401, a repair fluid supply pump 402, and a supply hose 403. The repair fluid supply pump 402 is connected to the repair fluid storage tank 401, and the two ends of the supply hose 403 are respectively connected to the repair fluid supply pump 402 and the repair fluid inlet 205. The repair fluid supply pump 402 transports the repair fluid in the repair fluid storage tank 401 to the repair fluid inlet 205 through the supply hose 403.

[0053] In practical use, the repair fluid in the repair fluid storage tank 401 is delivered to the repair fluid inlet 205 through the supply hose 403 by the repair fluid supply pump 402. There is no need to add the repair fluid manually, which improves the automation level of the equipment. The appropriate amount of repair fluid can be added according to the area of ​​the surface defect, reducing the waste of repair fluid.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for repairing surface defects in a wood board, characterized in that: The application relates to a repairing and leveling mechanism (100) and a repairing mold (200), wherein the repairing and leveling mechanism (100) is arranged in the repairing mold (200), the repairing and leveling mechanism (100) comprises a leveling scraper (101), the bottom end of the leveling scraper (101) is in contact with the surface of a wood board, and the repairing mold (200) comprises a cylindrical mold (201); the length of the repairing and leveling mechanism (100) is equal to the inner diameter of the cylindrical mold (201). A central rotating shaft (103) is arranged on the leveling scraper (101), the central rotating shaft (103) is arranged on the central axis of the cylindrical mold (201), the leveling scraper (101) rotates in the cylindrical mold (201) through the central rotating shaft (103), and the two ends of the central rotating shaft (103) are in contact with the inner wall of the cylindrical mold (201). A balance elastic component (102) is arranged on the leveling scraper (101), the balance elastic component (102) is used for keeping the bottom end of the leveling scraper (101) in contact with the surface of the wood board, and a rotating handle (109) is fixedly arranged at the top end of the central rotating shaft (103). The application further relates to a repairing liquid supply mechanism (400), a repairing liquid inlet (205) is arranged at the top of the cylindrical mold (201), the repairing liquid supply mechanism (400) is connected to the repairing liquid inlet (205), the repairing liquid inlet (205) is used for adding wood repairing liquid, a bottom discharging port (206) penetrating through the bottom of the cylindrical mold (201) is arranged, the bottom discharging port (206) is used for discharging excess repairing liquid, a bottom collecting groove (207) is arranged outside the cylindrical mold (201), the bottom collecting groove (207) is arranged at the bottom of the cylindrical mold (201), the bottom collecting groove (207) corresponds to the position of the bottom discharging port (206), and the bottom collecting groove (207) is used for receiving the excess repairing liquid discharged from the bottom discharging port (206).

2. The wood board surface defect repairing apparatus according to claim 1, characterized in that: The balance elastic component (102) comprises a top sleeve (104), a bottom connecting rod (105) and a compression spring (106), the bottom connecting rod (105) is fixedly connected to the leveling scraper (101), the top sleeve (104) is slidably arranged on the bottom connecting rod (105), and the two ends of the compression spring (106) are connected to the top sleeve (104) and the bottom connecting rod (105) respectively. The top sleeve (104) is in contact with the cylindrical mold (201), and the elastic force generated by the compression spring (106) presses the top sleeve (104) against the cylindrical mold (201).

3. A device for repairing surface defects in a wood board according to claim 2, characterized in that: A central through hole (204) is arranged on the top surface of the cylindrical mold (201), the central axis of the central through hole (204) coincides with the central axis of the cylindrical mold (201), and the central rotating shaft (103) is rotatably arranged in the central through hole (204). The center shaft (103) is provided with a center shaft shoulder (107) and a sleeve connecting rod (108), the center shaft shoulder (107) is clamped on the center through hole (204), and the sleeve connecting rod (108) is connected to the top sleeve (104).

4. The wood board surface defect repairing apparatus according to claim 1, characterized by: The repair mold (200) is provided with a fixing support (202) and a carrying handle (203), and the mold fixing mechanism (300) is fixed in the fixing support (202) and used for fixing the repair mold (200) on the surface of the wood board. The carrying handle (203) is used for carrying the repair mold (200).

5. The wood board surface defect repairing apparatus according to claim 4, characterized in that: The mold fixing mechanism (300) includes an air extraction cylinder (301), an air extraction piston (302) and a fixed suction cup (303), the air extraction piston (302) is slidingly arranged in the air extraction cylinder (301), the bottom of the air extraction cylinder (301) is provided with an air extraction hole (304), the mold fixing mechanism (300) is arranged at the bottom of the air extraction cylinder (301), and the air extraction piston (302) is provided with a piston pull rod (305). The air extraction cylinder (301) is provided with a one-way exhaust valve (306), and the one-way exhaust valve (306) is connected between the inside of the air extraction cylinder (301) and the outside atmosphere.

6. The wood board surface defect repairing apparatus according to claim 1, characterized by: The repair liquid supply mechanism (400) includes a repair liquid storage tank (401), a repair liquid supply pump (402) and a supply hose (403), the repair liquid supply pump (402) is connected with the repair liquid storage tank (401), the two ends of the supply hose (403) are respectively connected to the repair liquid supply pump (402) and the repair liquid inlet (205), and the repair liquid supply pump (402) delivers the repair liquid in the repair liquid storage tank (401) to the repair liquid inlet (205) through the supply hose (403).

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