A method for eliminating the edge lifting defect of a glass fiber main and auxiliary beam of a wind power blade

Abstract

The application provides a method for eliminating the edge lifting defect of a glass fiber main and auxiliary beam of a wind power blade, and relates to the technical field of wind power blades, and comprises the following steps: sequentially laying a glass fiber layer and a release cloth layer from bottom to top in a mold; and placing a pressing strip at the corner positions of the two sides of the mold, wherein the vertical section of the pressing strip is in contact with the side wall of the mold, and the horizontal section of the pressing strip is in contact with the upper surface of the release cloth layer. In the application, the release cloth layer can be pressed down by the pressing strip, so that the edge lifting of the release cloth layer is avoided, the edge lifting defect of the glass fiber main and auxiliary beam is significantly improved, the product quality is improved, the performance and service life of the blade are improved, after the glass fiber main and auxiliary beam is released, the staff does not need to maintain and process the glass main and auxiliary beam, the forming cycle of the glass fiber main and auxiliary beam is effectively shortened, the labor intensity of the staff is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade technology, and in particular to a method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades. Background Technology

[0002] Wind turbine blades are components of wind turbine generators. Each surface of the blade is designed as an airfoil, with its thickness, twist angle, and chord length distributed according to a specific pattern from the blade root to the tip, resulting in a favorable aerodynamic shape. The main and auxiliary beams of wind turbine blades are generally pre-formed from fiberglass in specialized molds to reduce the quality risks associated with integral molding with the skin. Due to their high stiffness and strength, fiberglass main and auxiliary beams are the most critical components of wind turbine blades. They are made by laying unidirectional fiberglass in a specialized mold and then introducing epoxy resin through a vacuum infusion process to form a type of fiberglass. The fiberglass main and auxiliary beams bear the majority of the blade's load, providing stiffness, i.e., resistance to bending and torsion.

[0003] Currently, fiberglass main and auxiliary beams are primarily pre-formed in specialized molds. For example, Chinese Patent CN107225778B discloses a method for forming a blade main beam. This method includes the following steps: sequentially laying a first-level reinforcing material layer, a release cloth, and a flow guide net on the blade main beam mold, performing a first vacuum infusion molding to form a semi-formed blade main beam; placing the semi-formed blade main beam inside the blade main mold shell; laying a second-level reinforcing material layer on top of the semi-formed blade main beam; and sequentially laying a third-level reinforcing material layer, a release cloth, and a flow guide net on the blade main mold shell, performing a second vacuum infusion molding. This method forms the large-megawatt-level blade main beam, which has a thicker reinforcing material layer, in two stages, solving the problem of local layering and envelopment of the blade main beam, improving the forming quality of the blade main beam, and thus improving the quality of the blade.

[0004] However, due to the relatively small tolerance requirements for mold sealing edge bonding, fiberglass processing, and fiberglass laying, the existing technology is prone to beam edge warping defects after layering and grouting. After pre-curing, the fiberglass main and auxiliary beams need to be repaired, which requires a lot of manpower and resources. In addition, the performance of the repaired fiberglass main and auxiliary beams will be reduced and cannot be fully restored. Summary of the Invention

[0005] This invention provides a method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades. This method addresses the technical problem that edge warping defects easily occur after the plying and grouting process, requiring maintenance of the fiberglass main and auxiliary beams after pre-curing, which incurs significant manpower and material costs.

[0006] To address the aforementioned technical problems, this invention discloses a method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades, comprising the following steps:

[0007] Fiberglass layer and release cloth layer are laid in the mold from bottom to top;

[0008] Place pressure strips at the corners on both sides of the mold. The vertical section of the pressure strip contacts the side wall of the mold, and the horizontal section of the pressure strip contacts the upper surface of the release cloth layer.

[0009] Preferably, the glass fiber layer is made by laying glass fibers layer by layer in the mold according to preset process parameters.

[0010] Preferably, the release cloth layer is formed by laying the release cloth on the surface of the fiberglass layer, and the width of the release cloth is greater than the width of the fiberglass layer.

[0011] Preferably, the pressure strip includes a lightweight chamfering material layer and a porous membrane, with the porous membrane wrapping around the lightweight chamfering material layer.

[0012] Preferably, the lightweight chamfering material layer is made of any one of the following materials: polyethylene terephthalate, polyvinyl chloride, balsa wood, polymethacrylamide, polyetherimide, acrylonitrile-styrene, polystyrene, or fiber-reinforced composite materials.

[0013] Preferably, the mold is glued to the side wall of the pressure strip.

[0014] Preferably, the process also includes arranging a vacuum system above the release cloth layer to extract air from the mold and provide a vacuum negative pressure environment for resin injection. Then, epoxy resin is injected, and after injection, pre-curing is performed. After pre-curing, the lightweight chamfering material layer is removed.

[0015] Preferably, the lightweight chamfering material layer has a chamfer on the side away from the mold, and the horizontal section of the lightweight chamfering material layer has a thickness of 0.1-0.3mm at the end away from the mold.

[0016] Preferably, a release cloth is laid on the surface of the fiberglass layer using a laying device. The laying device includes a support plate, which is positioned above two molds. Support legs are provided at the four corners of the lower surface of the support plate, and movable wheels are provided at the bottom of the support legs. An opening is opened in the center of the support plate, and an mounting plate is provided on the support plate. The mounting plate is connected to the support plate through a connecting mechanism. A first electric push rod is provided on the front side wall of the mounting plate, and a drive block is provided at the lower end of the first electric push rod. Two sliders are symmetrically arranged at the lower position of the front side wall of the mounting plate. The rear side wall of the sliders is slidably connected to the front side wall of the mounting plate. A drive rod is provided between the sliders and the drive block. One end of the drive rod is hinged to the upper surface of the slider, and the other end of the drive rod is hinged to the side wall of the drive block. A mounting post is provided on the lower surface of one end of the two sliders that are close to each other, and a pressure roller is rotatably provided at the lower end of the mounting post.

[0017] Preferably, the connecting mechanism includes two connecting plates, which are symmetrically arranged on the left and right sides of the mounting plate. A second electric push rod is provided on the lower surface of the connecting plate, and the lower end of the second electric push rod is connected to the upper surface of the support plate.

[0018] The technical solution of this invention has the following advantages: This invention provides a method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades, relating to the field of wind turbine blade technology, including the following steps: laying a fiberglass layer and a release cloth layer sequentially from bottom to top in a mold; placing pressure strips at the corners on both sides of the mold, with the vertical section of the pressure strip contacting the side wall of the mold and the horizontal section of the pressure strip contacting the upper surface of the release cloth layer. In this invention, the pressure strips can press down on the release cloth layer, preventing the edges of the release cloth layer from warping, significantly improving the edge warping defects of the fiberglass main and auxiliary beams, improving product quality, enhancing blade performance and service life. Furthermore, after the fiberglass main and auxiliary beams are demolded, workers do not need to perform maintenance on the fiberglass main and auxiliary beams, effectively shortening the forming cycle of the fiberglass main and auxiliary beams, reducing the labor intensity of workers, and improving production efficiency.

[0019] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the means particularly pointed out in the written description and the accompanying drawings.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of a method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to the present invention;

[0023] Figure 2 This is a schematic diagram of the laying device structure in the method for eliminating edge warping defects of fiberglass main and auxiliary beams of wind turbine blades according to the present invention;

[0024] Figure 3 This invention relates to a method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades. Figure 2 Enlarged view of the structure at point A in the middle.

[0025] In the diagram: 1. Release cloth layer; 2. Fiberglass layer; 3. Porous membrane; 4. Lightweight chamfered material layer; 5. Mold; 6. Support plate; 7. Support leg; 8. Opening; 9. Mounting plate; 10. First electric push rod; 11. Drive block; 12. Slider; 13. Drive rod; 14. Mounting column; 15. Pressure roller; 16. Connecting plate; 17. Second electric push rod; 18. Third electric push rod; 19. Moving shell; 20. Sliding hole; 21. First rack; 22. Return spring; 23. Second rack; 24. Gear; 25. Moving column; 26. Support block; 27. Guide column; 28. Guide groove. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0028] Example 1

[0029] This invention provides a method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades, such as... Figure 1 As shown, it includes the following steps:

[0030] In the mold 5, the fiberglass layer 2 and the release cloth layer 1 are laid from bottom to top. The fiberglass layer 2 is made by laying glass fiber layer by layer in the mold 5 according to the preset process parameters. The release cloth layer 1 is made by laying release cloth on the surface of the fiberglass layer 2. The width of the release cloth is greater than the width of the fiberglass layer 2.

[0031] Pressure strips are placed at the corners on both sides of mold 5. The vertical section of the pressure strip contacts the side wall of mold 5, and the horizontal section of the pressure strip contacts the upper surface of the release cloth layer 1.

[0032] The working principle and beneficial effects of the above technical solution are as follows: First, a fiberglass layer 2 is laid inside the mold 5. The fiberglass layer 2 is made of glass fiber laid inside the mold 5 according to preset process parameters. Then, a release cloth is laid on the fiberglass layer 2. The width of the release cloth is greater than the width of the fiberglass layer 2. After the release cloth is laid, a release cloth layer 1 is obtained. Then, pressure strips are placed at the corner positions on both sides of the mold 5. The pressure strips are located inside the mold 5 and include at least one vertical section and one horizontal section. The vertical section of the pressure strip contacts the inner wall of the corner position of the mold 5, and the horizontal section of the pressure strip contacts the upper surface of the release cloth layer 1. The pressure strip can press down the edges of both sides of the release fabric layer 1, preventing the edges of the release fabric layer 1 from curling up. This significantly improves the curling defect of the fiberglass main and auxiliary beams, improves product quality, enhances blade performance and service life. Furthermore, after the fiberglass main and auxiliary beams are demolded, workers do not need to repair or process them, reducing the time spent on defect repair after demolding. This effectively shortens the molding cycle of the fiberglass main and auxiliary beams, reduces the labor intensity of workers, and improves production efficiency. The above solution has a simple and reasonable structural design, is convenient to operate and easy to implement, and reduces production difficulty.

[0033] Example 2

[0034] Based on Example 1, such as Figure 1 As shown, the pressure strip includes a lightweight chamfering material layer 4 and a porous membrane 3, with the porous membrane 3 wrapped around the lightweight chamfering material layer 4;

[0035] The lightweight chamfering material layer 4 is made of any one of the following materials: polyethylene terephthalate, polyvinyl chloride, balsa wood, polymethacrylamide, polyetherimide, acrylonitrile-styrene, polystyrene, or fiber-reinforced composite materials.

[0036] The mold 5 is glued to the side wall of the pressure strip.

[0037] The working principle and beneficial effects of the above technical solution are as follows: The pressure strip includes a lightweight chamfered material layer 4 that is completely wrapped around the porous membrane 3. Commonly used materials for the lightweight chamfered material layer 4 include: polyethylene terephthalate (PET), polyvinyl chloride (PVC), balsa wood (BALSA), polymethyl methacrylate (PMI), polyetherimide (PEI), acrylonitrile-styrene (SAN), polystyrene (PS), fiber-reinforced composite materials, etc. On the one hand, it can improve the mechanical properties of the pressure strip, ensuring that the pressure strip can exert a stable downward pressure on the release cloth layer 1 and prevent the edge of the release cloth layer 1 from lifting. On the other hand, the material used in the lightweight chamfered material layer 4 has a low cost, which can reduce the manufacturing cost of wind turbine blades. In order to improve the stability of the pressure strip, the side wall of the pressure strip can be glued to the inner wall of the mold 5 by spraying adhesive to avoid displacement during the installation process.

[0038] Example 3

[0039] Based on Example 2, a vacuum system is arranged above the release cloth layer 1. The air in the mold 5 is extracted by the vacuum system to provide a vacuum negative pressure environment for injection. Then, the resin is injected and pre-cured after injection.

[0040] The resin adhesive is made of epoxy resin;

[0041] After pre-curing and molding, remove the lightweight chamfering material layer 4.

[0042] The working principle and beneficial effects of the above technical solution are as follows: After the release cloth layer 1 is laid, a vacuum system is arranged above the release cloth layer 1. The vacuum system includes a vacuum film and an air extraction device. First, the vacuum film is laid for sealing, and then the air extraction device is used for vacuum pre-tightening. During the tightening process, the horizontal section of the lightweight chamfered material layer 4 of the pressure strip is used to press down on the release cloth layer 1, preventing the edge of the release cloth layer 1 from lifting up, thereby reducing the edge lifting defects after the glass fiber main and auxiliary beams are formed. The porous structure of the porous membrane 3 helps to completely extract the gas and improve the vacuuming effect. After the pressure holding is qualified, the mold is then... Epoxy resin is injected into a vacuum environment with a pressure of 5. During the injection process, because the lightweight chamfered material layer 4 is wrapped with a porous membrane 3, the resin can flow through the pores of the porous membrane 3 to the release cloth layer 1 without affecting the injection process, thus ensuring the injection quality. After injection, the material is gradually heated and cured. After pre-curing, the lightweight chamfered material layer 4 can be easily removed through the isolation effect of the porous membrane 3. This convenient removal further improves production efficiency. The complete removal of the lightweight chamfered material layer 4 avoids affecting the blade performance, further improving the production quality and service life of the blade.

[0043] Example 4

[0044] Based on Example 3, a chamfer is provided on the side of the lightweight chamfer material layer 4 away from the mold 5, and the horizontal section of the lightweight chamfer material layer 4 is left with a thickness of 0.1-0.3mm at the end away from the mold 5.

[0045] The working principle and beneficial effects of the above technical solution are as follows: The lightweight chamfered material layer 4 is chamfered on the side away from the mold 5. During the vacuum tightening process, it is convenient for the vacuum film to adhere to the outer wall of the pressure strip. The horizontal section of the lightweight chamfered material layer 4 is reserved with a thickness of 0.1 mm to 0.3 mm away from the mold 5. The reserved thickness can be adjusted according to the actual production to avoid indentation on the demolding cloth layer 1 during the pressing of the pressure strip.

[0046] Example 5

[0047] Based on Example 4, such as Figure 2 , Figure 3As shown, a release cloth is laid on the surface of the fiberglass layer 2 using a laying device. The laying device includes a support plate 6, which is set above two molds 5. Support legs 7 are set at the four corners of the lower surface of the support plate 6, and movable wheels are set at the bottom of the support legs 7. An opening 8 is opened in the center of the support plate 6. An mounting plate 9 is set on the support plate 6 and is connected to the support plate 6 through a connecting mechanism. A first electric push rod 10 is set on the front side wall of the mounting plate 9, and a drive block 11 is set at the lower end of the first electric push rod 10. Two sliders 12 are symmetrically set at the lower position of the front side wall of the mounting plate 9. The rear side wall of the sliders 12 is slidably connected to the front side wall of the mounting plate 9. A drive rod 13 is set between the sliders 12 and the drive block 11. One end of the drive rod 13 is hinged to the upper surface of the slider 12, and the other end of the drive rod 13 is hinged to the side wall of the drive block 11. A mounting post 14 is set on the lower surface of the two sliders 12 that are close to each other. A pressure roller 15 is rotatably set at the lower end of the mounting post 14.

[0048] The connecting mechanism includes two connecting plates 16, which are symmetrically arranged on the left and right sides of the mounting plate 9. A second electric push rod 17 is provided on the lower surface of the connecting plate 16, and the lower end of the second electric push rod 17 is connected to the upper surface of the support plate 6.

[0049] The working principle and beneficial effects of the above technical solution are as follows: When preparing the release cloth layer 1, the release cloth is first laid on the fiberglass layer 2. Then, the laying device is moved above the release cloth, and the support leg 7 is located outside the mold 5. The position of the support plate 6 can be easily adjusted by the moving wheel so that the opening 8 is aligned with the release cloth. Then, the second electric push rod 17 is activated. The second electric push rod 17 drives the mounting plate 9 to move downward through the connecting plate 16 until both pressure rollers 15 are in contact with the upper surface of the release cloth. Then, the first electric push rod 10 is activated. The first electric push rod 10 extends downward and can drive the drive block 11 to move downward. The drive block 11 drives the slider 12 to slide closer to the second electric push rod 17 via the drive rod 13. The slider 12 then drives the pressure roller 15 to roll along the surface of the release cloth via the mounting column 14, making the release cloth flat and solving the problem of unevenness of the release cloth layer 1. This further reduces the production defects of the fiberglass main and auxiliary beams and improves product quality. After the release cloth is flat, the first electric push rod 10 and the second electric push rod 17 return to their original positions in sequence, causing the pressure roller 15 to separate from the surface of the release cloth. The position of the pressure roller 15 can be adjusted by the moving wheel, which facilitates the processing of different positions of the release cloth and improves production efficiency.

[0050] Example 6

[0051] Based on Example 5, such as Figure 3As shown, a support mechanism is provided on one side away from each other for the two mounting posts 14. The support mechanism includes a third electric push rod 18, which is located on the side wall of the mounting post 14. A movable housing 19 is provided at the lower end of the third electric push rod 18. A sliding hole 20 is provided on the bottom wall of the movable housing 19. A first rack 21 is slidably provided on the upper inner wall of the movable housing 19. The first rack 21 is connected to the side wall of the mounting post 14 through a return spring 22. A second rack 23 is slidably provided on the lower inner wall of the movable housing 19. A rotating shaft is provided between the first rack 21 and the second rack 23. The front and rear ends of the rotating shaft are rotatably connected to the inner wall of the movable housing 19. A gear 24 is provided on the rotating shaft. The gear 24 is respectively connected to the first rack 21 and the second rack 23. The rack 23 is engaged. A movable post 25 is provided at the end of the second rack 23 near the mounting post 14. The side wall of the movable post 25 is slidably connected to the end of the second rack 23 near the mounting post 14. A support block 26 is provided at the lower end of the movable post 25. The support block 26 is in the shape of a right triangle. An inclined surface is provided on the side of the support block 26 away from the mounting post 14. A guide post 27 is provided at the upper end of the movable post 25. The guide post 27 is slidably disposed in the guide groove 28. The guide groove 28 is disposed on the inner wall of the movable shell 19. The guide groove 28 includes a transverse section and an inclined section. The inclined section is located at the end of the transverse section away from the mounting post 14. The height of the end of the inclined section away from the mounting post 14 is higher than the height of the end of the inclined section near the mounting post 14.

[0052] The working principle and beneficial effects of the above technical solution are as follows: As the mounting column 14 moves toward the mold 5, the pressure roller 15 pushes the folds on the surface of the release cloth toward the pressure strip. The mounting column 14 drives the moving shell 19 to move toward the pressure strip. When the first rack 21 contacts the side wall of the pressure strip, as the mounting column 14 continues to move, the first rack 21 moves toward the mounting column 14 and pushes the pressure strip into close contact with the mold 5. The sliding of the first rack 21 drives the gear 24 to rotate. The rotation of the gear 24 drives the second rack 23 to slide toward the pressure strip. The second rack 23 drives the support block 26 to move toward the pressure strip through the moving column 25. A preset chamfer is reserved on the side of the pressure strip away from the mold 5. When the support block 26 contacts the bottom of the pressure strip, the support block 26 can be inserted below the pressure strip through the preset chamfer. When the guide column 27 slides to the inclined section of the guide groove 28, the support block 26 can lift the pressure strip. At this time, the pressure strip is lifted. The wrinkles pushed by the pressure roller 15 are eliminated under the pressure bar, making the release cloth smoother. Then, the first electric push rod 10 retracts, and under the action of the return spring 22, the first rack 21 contacts the side wall of the pressure bar, making the pressure bar fit tightly against the side wall of the mold 5 until the first rack 21 separates from the pressure bar. During this process, the support block 26 slowly descends, and after contacting the release cloth, it slides away from the pressure bar, so that the pressure bar presses on the surface of the release cloth again. The position of the support block 26 can be flexibly adjusted by the third electric push rod 18, so that the support block 26 fits or separates from the surface of the release cloth. By setting up a support mechanism, the wrinkles of the release cloth can be avoided from accumulating between the pressure bar and the pressure roller 15, effectively eliminating the wrinkles on the surface of the release cloth, improving the flatness of the release cloth layer 1, ensuring product quality, and eliminating the need for manual inspection during the wrinkle elimination process, further reducing the labor intensity of workers and improving production efficiency.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades, characterized in that, Includes the following steps: Fiberglass layer (2) and release cloth layer (1) are laid from bottom to top in the mold (5); Place pressure strips at the corners on both sides of the mold (5). The vertical section of the pressure strip contacts the side wall of the mold (5), and the horizontal section of the pressure strip contacts the upper surface of the release cloth layer (1). The release cloth layer (1) is formed by laying the release cloth on the surface of the fiberglass layer (2), and the width of the release cloth is greater than the width of the fiberglass layer (2); A release cloth is laid on the surface of the fiberglass layer (2) using a laying device. The laying device includes a support plate (6), which is set above the two molds (5). Support legs (7) are set at the four corners of the lower surface of the support plate (6). The bottom of the support legs (7) is equipped with a moving wheel. An opening (8) is opened in the center of the support plate (6). An mounting plate (9) is set on the support plate (6). The mounting plate (9) is connected to the support plate (6) through a connecting mechanism. A first electric push rod (10) is set on the front side wall of the mounting plate (9). A drive is set at the lower end of the first electric push rod (10). Two sliders (12) are symmetrically arranged on the lower part of the front side wall of the moving block (11) and the mounting plate (9). The rear side wall of the slider (12) is slidably connected to the front side wall of the mounting plate (9). A driving rod (13) is arranged between the slider (12) and the driving block (11). One end of the driving rod (13) is hinged to the upper surface of the slider (12), and the other end of the driving rod (13) is hinged to the side wall of the driving block (11). A mounting column (14) is arranged on the lower surface of the two sliders (12) close to each other. A pressure roller (15) is rotatably arranged at the lower end of the mounting column (14). Two mounting posts (14) are provided with a support mechanism on one side away from each other. The support mechanism includes a third electric push rod (18). The third electric push rod (18) is set on the side wall of the mounting post (14). A movable shell (19) is set at the lower end of the third electric push rod (18). A sliding hole (20) is opened on the bottom wall of the movable shell (19). A first rack (21) is slidably set on the upper inner wall of the movable shell (19). The first rack (21) is connected to the side wall of the mounting post (14) through a return spring (22). A second rack (23) is slidably set on the lower inner wall of the movable shell (19). A rotating shaft is set between the first rack (21) and the second rack (23). The front and rear ends of the rotating shaft are rotatably connected to the inner wall of the movable shell (19). A gear (24) is set on the rotating shaft. The gear (24) is connected to the first rack (21) and the second rack respectively. (23) Engagement, a movable column (25) is provided at one end of the second rack (23) near the mounting post (14). The side wall of the movable column (25) is slidably connected to the end of the second rack (23) near the mounting post (14). A support block (26) is provided at the lower end of the movable column (25). The support block (26) is in the shape of a right triangle. An inclined surface is provided on the side of the support block (26) away from the mounting post (14). A guide column (27) is provided at the upper end of the movable column (25). The guide column (27) is slidably disposed in the guide groove (28). The guide groove (28) is disposed on the inner wall of the movable shell (19). The guide groove (28) includes a transverse section and an inclined section. The inclined section is located at the end of the transverse section away from the mounting post (14). The height of the end of the inclined section away from the mounting post (14) is higher than the height of the end of the inclined section near the mounting post (14).

2. The method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to claim 1, characterized in that, The glass fiber layer (2) is made by laying glass fibers layer by layer in the mold (5) according to the preset process parameters.

3. The method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to claim 1, characterized in that, The pressure strip includes a lightweight chamfering material layer (4) and a porous membrane (3), with the porous membrane (3) wrapped around the lightweight chamfering material layer (4).

4. The method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to claim 3, characterized in that, The lightweight chamfering material layer (4) is made of any one of the following materials: polyethylene terephthalate, polyvinyl chloride, balsa wood, polymethacrylamide, polyetherimide, acrylonitrile-styrene, polystyrene, or fiber-reinforced composite material.

5. The method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to claim 3, characterized in that, The mold (5) is glued to the side wall of the pressure strip.

6. The method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to claim 3, characterized in that, It also includes arranging a vacuum system above the release cloth layer (1), using the vacuum system to extract the air in the mold (5) to provide a vacuum negative pressure environment for injection, and then injecting the resin liquid. The resin liquid is epoxy resin. After injection, pre-curing molding is performed. After pre-curing molding, the lightweight chamfering material layer (4) is removed.

7. The method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to claim 6, characterized in that, A chamfer is provided on the side of the lightweight chamfer material layer (4) away from the mold (5), and the horizontal section of the lightweight chamfer material layer (4) is 0.1-0.3mm thick at the end away from the mold (5).

8. The method for eliminating edge warping defects in the fiberglass main and auxiliary beams of wind turbine blades according to claim 1, characterized in that, The connecting mechanism includes two connecting plates (16), which are symmetrically arranged on the left and right sides of the mounting plate (9). A second electric push rod (17) is provided on the lower surface of the connecting plate (16), and the lower end of the second electric push rod (17) is connected to the upper surface of the support plate (6).

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