A wind turbine blade bonding device with multi-angle adjustment and its use method

Abstract

The present invention is used in the field of wind power generation technology, and discloses a wind turbine blade bonding device with multi-angle adjustment, including a support bracket, a support platform is fixedly provided on the upper surface of the support bracket, a liquid storage tank is fixedly installed on one end of the support bracket, and a conformable coating mechanism is provided on the upper surface of the liquid storage tank, so as to adapt to the use of wind turbine blades with different inclination angles by contact shaping. The wind turbine blade bonding device with multi-angle adjustment, by providing a guide frame that matches the ideal shape of the blade body, enables the coating structure to slide along the guide frame to achieve coating of the edge surface of the blade body according to the ideal shape of the blade body, and by softening the paraffin in the contact capsule by an electric heating plate, provides a working mode in which the contact capsule can be shaped by contacting with the surface of the blade body after the paraffin is softened, so that the paraffin in the contact capsule can completely match the shape of the edge of the blade body after cooling and hardening.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a wind power blade bonding device with multi-angle adjustment and a use method thereof. Background Art

[0002] As the global demand for clean energy continues to grow, wind power generation, as a renewable and pollution-free way of obtaining energy, has been widely used and rapidly developed. Wind turbine blades are one of the key components of wind turbines. Their performance and quality directly affect the efficiency and reliability of the entire wind power generation system. In the manufacturing process of wind turbine blades, the bonding process plays a vital role. Blades usually consist of multiple parts, such as outer shell, web, main beam, etc. These parts need to be firmly connected by bonding to withstand complex wind loads and long-term operation tests. At present, there are some significant problems and challenges in the traditional wind turbine blade bonding technology. First, insufficient bonding strength is a common problem. Since wind turbine blades are subjected to huge wind impact and vibration during operation, if the bonding parts are not strong enough, cracking and debonding are prone to occur, which will affect the structural integrity and service life of the blades. Secondly, the stability and consistency of the bonding process are difficult to guarantee. In actual production, the bonding process is affected by many factors, such as the quality and ratio of the adhesive, the temperature and humidity of the construction environment, the treatment quality of the bonding surface, etc. Slight changes in these factors may lead to differences in bonding performance, thereby increasing the uncertainty of product quality. In addition, the existing bonding technology is also insufficient in weather resistance. Wind turbines The blades are exposed to harsh natural environments for a long time, and are subjected to the test of sun, rain, high and low temperature changes. If the weather resistance of the adhesive is poor, it is easy to age and degrade, thereby reducing the reliability of the bonding. Under other inconvenient external conditions, the coating and bonding methods of the various components of the wind turbine blades determine the stability of the bonding. The traditional flat coating method uses a robot for coating. Before coating, the surface shape of the wind turbine blade needs to be measured to obtain shape data, and then the data is input into the controller of the robot. At this time, the relative position between the robot and the wind turbine blade needs to be guaranteed to ensure the stability of the coating effect. However, this process is greatly affected by the external environment. Due to the large volume of the wind turbine blade, the shape of the edge of the wind turbine blade is prone to some changes under different room temperature conditions. This causes the shape data in the robot controller to be inconsistent with the actual shape, which can easily lead to coating gaps on the surface of the wind turbine blade, affecting the stability of the bonding. Summary of the invention

[0003] The object of the present invention is to provide a wind turbine blade bonding device with multi-angle adjustment and a method of using the same, so as to solve the problem in the above background technology that the edge of the wind turbine blade cannot be coated according to the actual shape.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-angle adjustable wind turbine blade bonding device, comprising a support frame, a support platform is fixedly provided on the upper surface of the support frame, and a blade body is placed on the upper end of the support platform, a liquid storage tank is fixedly installed on one end of the support frame, and a conformable coating mechanism is provided on the upper surface of the liquid storage tank, which can adapt to the use of wind turbine blades with different inclination angles through contact shaping.

[0005] Preferably, the conformable coating mechanism comprises: a guide frame, which is fixedly mounted on the upper surface of a liquid storage tank by bolts, and an electric heating plate is fixedly provided on the side surface of the guide frame, and a contact capsule is fixedly provided on the side surface of the electric heating plate, a sliding liquid pump is installed on the upper surface of the liquid storage tank, and a suction tube is fixedly installed on the lower end of the liquid pump.

[0006] By adopting the above technical solution, the liquid pump can suck the adhesive out of the liquid storage tank through the suction tube during the movement of the liquid pump on the liquid storage tank.

[0007] Preferably, the conformable coating mechanism also includes: a displacement seat, which is arranged on the upper surface of the guide frame, and rotating displacement wheels are installed at both ends of the displacement seat, a power gear is fixedly installed on the outer surface of the rotating shaft of the displacement wheel, a rotating transmission gear is installed on the inner surface of the displacement seat, and a reversing gear is fixedly connected between the rotating shafts of the two transmission gears, a displacement motor is fixedly installed inside the side surface of the displacement seat, and a driving gear is fixedly connected to one end face of the output shaft of the displacement motor.

[0008] By adopting the above technical solution, the displacement motor can drive the displacement seat to move on the guide frame.

[0009] Preferably, the conformable coating mechanism also includes: a coil spring, one end of the coil spring is fixedly arranged on the lower surface of the displacement seat, and the other end of the coil spring is fixedly connected to one end of a pulling rope, and the other end of the pulling rope is fixedly connected to a pulling plate, a contact ball is embedded on the upper surface of the pulling plate, and a coating head is slidably installed on the lower end of the pulling plate, an output pipe is provided on the inner surface of the coating head, and the upper end of the output pipe passes through the upper outer surface of the coating head, and the upper end of the output pipe is fixedly connected to a connecting head, and the lower end of the output pipe passes through the inner surface of the coating head, a guide hose is connected between the connecting head and the liquid pump, and a rotating trowel plate is installed on the side surface of one end of the coating head.

[0010] By adopting the above technical solution, the adhesive can be evenly applied to the outer surface of the blade body.

[0011] Preferably, the guide frame is a continuous arc design, and the guide frame is a C-shaped design with a groove at one end, the contact capsule is a hollow capsule bag made of soft silicone material, and the interior of the contact capsule is filled with paraffin, and the outer surface shape of the contact capsule is the same as the outer surface shape of the blade body.

[0012] By adopting the above technical solution, the contact capsule can shape itself through the melting and solidification of the internal paraffin.

[0013] Preferably, one end of the displacement wheel passes through the lower end surface of the displacement seat, and the displacement wheel and the power gear are concentrically designed, and the power gear is meshed with the transmission gear, the reversing gear and the driving gear are both bevel gear designs, and the reversing gear is meshed with the driving gear, and the outer surface of the displacement wheel is in contact with the outer surface of the guide frame.

[0014] By adopting the above technical solution, the displacement seat can be stably moved on the guide frame through the displacement wheels.

[0015] Preferably, the pulling rope passes through the outer surface of the guide frame, and the end of the pulling rope connected to the displacement seat is located in the middle of the lower end surface of the displacement seat, and the end of the pulling rope connected to the pulling plate is located in the middle of the upper end surface of the pulling plate.

[0016] By adopting the above technical solution, the displacement seat can pull the pulling plate through the pulling rope so that the pulling plate can move synchronously with the displacement seat.

[0017] Preferably, a spring is connected between the pulling plate and the coating head, and the inner surface of the coating head is in contact with the outer surface of the blade body.

[0018] By adopting the above technical solution, the coating head can apply the adhesive to the outer surface of the blade body.

[0019] Preferably, the contact ball protrudes from the upper surface of the pulling plate, and the outer surface of the contact ball fits with the outer surface of the contact capsule, the trowel plate is arc-shaped, and the outer surface of the lower end of the trowel plate fits with the outer surface of the blade body, and the trowel plate is made of silicone material.

[0020] By adopting the above technical solution, the trowel plate can evenly scrape the adhesive on the outer surface of the blade body.

[0021] A method for using a wind turbine blade bonding device with multi-angle adjustment, the method comprising the following steps:

[0022] S1. Place the blade body on the support platform;

[0023] S2. shaping the contact capsule by using the paraffin in the contact capsule;

[0024] S3. Add sufficient amount of adhesive to the liquid storage tank;

[0025] S4. Start the displacement motor to drive the displacement seat to move on the guide frame;

[0026] S5. The displacement seat pulls the pulling plate through a pulling rope connected to one end of the coil spring, and the pulling plate moves along the contact capsule in the actual shape of the outer surface of the edge of the blade body;

[0027] S6. The coating head sucks the adhesive out of the liquid storage tank and injects it into the output pipe through the liquid pump, and the coating head applies the adhesive to the outer surface of the edge of the blade body;

[0028] S7. The trowel plate smoothes the adhesive on the outer surface of the edge of the blade body by contacting the outer surface of the edge of the blade body.

[0029] Compared with the prior art, the invention has the following beneficial effects: the multi-angle adjustable wind turbine blade bonding device:

[0030] By providing a guide frame that matches the ideal shape of the blade body, the coating structure can slide along the guide frame to achieve coating of the edge surface of the blade body according to the ideal shape of the blade body;

[0031] Furthermore, by softening the paraffin in the contact capsule through the electric heating plate, a working mode is provided in which the contact capsule can be shaped by contacting with the surface of the blade body after the paraffin is softened, so that the paraffin in the contact capsule can completely match the shape of the edge of the blade body after cooling and hardening, so that the pulling plate can drive the coating head to move according to the actual shape of the edge of the blade body to perform adaptive adjustment, so as to achieve the purpose of reducing the influence of the external environment on the coating effect;

[0032] Furthermore, a coil spring is used to pull the relative position between the displacement seat and the pulling plate, ensuring that the displacement seat and the pulling plate can move along different trajectories according to the shape of the upper surface of the guide frame and the shape of the lower surface of the contact bag respectively without disconnecting, so that the coating head can be limited while performing stable coating, avoiding the coating head from deviating too much from the ideal shape and causing coating failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the three-dimensional structure of the connection between the support frame and the blade body of the present invention;

[0035] Figure 3 It is a schematic diagram of the three-dimensional structure of the connection between the support frame and the support platform of the present invention;

[0036] Figure 4It is a three-dimensional structural schematic diagram of the connection section of the liquid storage tank, the liquid pump and the liquid suction tube of the present invention;

[0037] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide frame, the electric heating plate and the contact capsule connected in the present invention;

[0038] Figure 6 It is a schematic diagram of the three-dimensional structure of the connection between the coil spring and the pulling rope of the present invention;

[0039] Figure 7 It is a schematic diagram of the three-dimensional structure of the connection between the displacement wheel, the power gear and the transmission gear of the present invention;

[0040] Figure 8 It is a schematic diagram of the three-dimensional structure of the connection between the reversing gear and the driving gear of the present invention;

[0041] Fig. 9 This is a schematic diagram of the three-dimensional structure of the connection between the coating head and the output tube of the present invention;

[0042] Fig.10 It is a schematic diagram of the three-dimensional structure of the cross-section surface connecting the pulling plate and the coating head of the present invention.

[0043] In the figure: 1. support frame; 2. support platform; 3. blade body; 4. liquid storage tank; 5. guide frame; 6. electric heating plate; 7. contact capsule; 8. liquid pump; 9. suction tube; 10. displacement seat; 11. displacement wheel; 12. power gear; 13. transmission gear; 14. reversing gear; 15. displacement motor; 16. driving gear; 17. coil spring; 18. pulling rope; 19. pulling plate; 20. contact ball; 21. coating head; 22. output pipe; 23. connector; 24. diversion hose; 25. smear plate. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-10 The present invention provides a technical solution: a wind turbine blade bonding device with multi-angle adjustment.

[0046] Embodiment 1

[0047] The present embodiment discloses: a support frame 1, a support platform 2 is fixedly arranged on the upper surface of the support frame 1, and a blade body 3 is placed on the upper end of the support platform 2, a liquid storage tank 4 is fixedly installed on one end of the support frame 1, and a conforming coating mechanism is arranged on the upper surface of the liquid storage tank 4, which can adapt to the use of wind turbine blades with different inclination angles by contact shaping;

[0048] The conformable coating mechanism comprises: a guide frame 5, which is fixedly mounted on the upper surface of a liquid storage tank 4 by bolts, and a heating plate 6 is fixedly mounted on the side surface of the guide frame 5, and a contact capsule 7 is fixedly mounted on the side surface of the heating plate 6, and a sliding liquid pump 8 is mounted on the upper surface of the liquid storage tank 4, and a liquid suction pipe 9 is fixedly mounted on the lower end of the liquid pump 8;

[0049] The guide frame 5 is a continuous arc-shaped design, and the guide frame 5 is a C-shaped design with a groove opened at one end. The contact capsule 7 is a hollow capsule bag made of soft silicone material, and the interior of the contact capsule 7 is filled with paraffin. The outer surface shape of the contact capsule 7 is the same as the outer surface shape of the blade body 3;

[0050] Place the blade body 3 on the supporting platform 2 of the supporting frame 1, then remove the guide frame 5 from the liquid storage tank 4, and then start the electric heating plate 6 to heat the contact capsule 7. At this time, as the paraffin inside the contact capsule 7 melts, the guide frame 5 is moved horizontally to the edge of the blade body 3 so that the contact capsule 7 contacts the outer surface of the edge of the blade body 3. At this time, cut off the power supply of the electric heating plate 6 to allow the paraffin in the contact capsule 7 to cool and solidify. At this time, fix the guide frame 5 to the liquid storage tank 4 with bolts, and then add a sufficient amount of adhesive into the liquid storage tank 4.

[0051] Embodiment 2

[0052] This embodiment is disclosed on the basis of the embodiment 1: the conformable coating mechanism further includes: a displacement seat 10, the displacement seat 10 is arranged on the upper surface of the guide frame 5, and a rotating displacement wheel 11 is installed at both ends of the displacement seat 10, a power gear 12 is fixedly arranged on the outer surface of the rotating shaft of the displacement wheel 11, a rotating transmission gear 13 is installed on the inner surface of the displacement seat 10, and a reversing gear 14 is fixedly connected between the rotating shafts of the two transmission gears 13, a displacement motor 15 is fixedly installed inside the side surface of the displacement seat 10, and a driving gear 16 is fixedly connected to one end surface of the output shaft of the displacement motor 15;

[0053] One end of the displacement wheel 11 passes through the lower end surface of the displacement seat 10, and the displacement wheel 11 and the power gear 12 are concentrically designed, and the power gear 12 is meshed with the transmission gear 13, the reversing gear 14 and the driving gear 16 are both bevel gear designs, and the reversing gear 14 is meshed with the driving gear 16, and the outer surface of the displacement wheel 11 is in contact with the outer surface of the guide frame 5;

[0054] During use, the displacement motor 15 is started to drive the transmission gear 13 to rotate through the engagement of the driving gear 16 and the reversing gear 14. At this time, the transmission gear 13 drives the displacement wheel 11 to rotate by engaging with the power gears 12 on both sides. The displacement wheel 11 drives the displacement seat 10 to move on the guide frame 5 by contacting the outer surface of the guide frame 5.

[0055] Embodiment 3

[0056] The present embodiment discloses on the basis of the first embodiment and the second embodiment: the conformable coating mechanism further comprises: a coil spring 17, one end of the coil spring 17 is fixedly arranged on the lower surface of the displacement seat 10, and the other end of the coil spring 17 is fixedly connected to one end of a pulling rope 18, and the other end of the pulling rope 18 is fixedly connected to a pulling plate 19, a contact ball 20 is embeddedly installed on the upper surface of the pulling plate 19, and a coating head 21 is slidably installed on the lower end of the pulling plate 19, an output tube 22 is provided on the inner surface of the coating head 21, and the upper end of the output tube 22 passes through the upper outer surface of the coating head 21, and the upper end of the output tube 22 is fixedly connected to a connector 23, and the lower end of the output tube 22 passes through the inner surface of the coating head 21, a guide hose 24 is connected between the connector 23 and the liquid pump 8, and a rotating trowel plate 25 is installed on the side surface of one end of the coating head 21;

[0057] The pulling rope 18 passes through the outer surface of the guide frame 5, and the end of the pulling rope 18 connected to the displacement seat 10 is located in the middle of the lower end surface of the displacement seat 10, and the end of the pulling rope 18 connected to the pulling plate 19 is located in the middle of the upper end surface of the pulling plate 19;

[0058] A spring is connected between the pulling plate 19 and the coating head 21, and the inner surface of the coating head 21 is in contact with the outer surface of the blade body 3;

[0059] The contact ball 20 protrudes from the upper surface of the pulling plate 19, and the outer surface of the contact ball 20 fits with the outer surface of the contact capsule 7;

[0060] The trowel plate 25 is designed to be arc-shaped, and the outer surface of the lower end of the trowel plate 25 is in contact with the outer surface of the blade body 3, and the trowel plate 25 is a plate made of silicone material;

[0061] During the movement of the displacement seat 10 along the guide frame 5, the displacement seat 10 pulls the pulling plate 19 through the pulling rope 18 connected to one end of the coil spring 17, so that the pulling plate 19 can maintain a close fit with the surface of the contact capsule 7 through the contact ball 20, so as to achieve the purpose of the pulling plate 19 moving along the contact capsule 7 in the actual shape of the edge surface of the blade body 3. During the process, when the coating head 21 moves with the movement of the pulling plate 19, the coating head 21 pulls the liquid pump 8 through the guide hose 24 at one end of the connector 23, so that the liquid pump 8 can move horizontally on the liquid storage tank 4 and pass the liquid suction tube 9 to transfer the liquid to the liquid storage tank 4. The adhesive in the liquid storage tank 4 is sucked out, and the liquid pump 8 injects the adhesive into the output pipe 22 through the guide hose 24 and the connecting head 23, so that the coating head 21 can apply the adhesive to the outer edge surface of the blade body 3 while moving along the outer edge surface of the blade body 3. At the same time, the trowel plate 25 can scrape the adhesive on the outer edge surface of the blade body 3 by contacting with the outer edge surface of the blade body 3, so that the adhesive can be more evenly coated on the outer edge surface of the blade body 3. During the process, the coating head 21 maintains a close fit with the outer edge surface of the blade body 3 through the spring support between the pulling plate 19.

[0062] A method for using a wind turbine blade bonding device with multi-angle adjustment, the method comprising the following steps:

[0063] Step 1. Place the blade body 3 on the support platform 2;

[0064] Step 2. shaping the contact capsule 7 by using the paraffin in the contact capsule 7;

[0065] Step 3. Add a sufficient amount of adhesive into the liquid storage tank 4;

[0066] Step 4. Start the displacement motor 15 to drive the displacement seat 10 to move on the guide frame 5;

[0067] Step 5. The displacement seat 10 pulls the pulling plate 19 through the pulling rope 18 connected to one end of the coil spring 17, and the pulling plate 19 moves along the contact capsule 7 in the actual shape of the outer surface of the edge of the blade body 3;

[0068] Step 6. The coating head 21 sucks the adhesive in the liquid storage tank 4 through the liquid pump 8 and injects it into the output pipe 22, and the coating head 21 applies the adhesive to the outer surface of the edge of the blade body 3;

[0069] Step 7: The trowel plate 25 smoothes the adhesive on the outer edge surface of the blade body 3 by contacting the outer edge surface of the blade body 3 .

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade bonding device with multi-angle adjustment, comprising a support frame (1), a support platform (2) being fixedly arranged on the upper surface of the support frame (1), and a blade body (3) being placed on the upper end of the support platform (2), characterized in that: A liquid storage tank (4) is fixedly mounted on one end of the support frame (1), and a conformable coating mechanism is provided on the upper surface of the liquid storage tank (4) so ​​as to adapt to the use of wind turbine blades with different inclination angles by means of contact shaping; The conformable coating mechanism comprises: a guide frame (5), the guide frame (5) being fixedly mounted on the upper surface of a liquid storage tank (4) by means of bolts, and a heating plate (6) being fixedly mounted on the side surface of the guide frame (5), and a contact capsule (7) being fixedly mounted on the side surface of the heating plate (6), and a sliding liquid pump (8) being mounted on the upper surface of the liquid storage tank (4), and a liquid suction tube (9) being fixedly mounted on the lower end of the liquid pump (8); The conformable coating mechanism further comprises: a displacement seat (10), the displacement seat (10) being arranged on the upper surface of the guide frame (5), and rotatable displacement wheels (11) being mounted on both ends of the displacement seat (10), a power gear (12) being fixedly mounted on the outer surface of the rotating shaft of the displacement wheel (11), a rotatable transmission gear (13) being mounted on the inner surface of the displacement seat (10), and a reversing gear (14) being fixedly connected between the rotating shafts of the two transmission gears (13), a displacement motor (15) being fixedly mounted inside the side surface of the displacement seat (10), and a driving gear (16) being fixedly connected to one end surface of the output shaft of the displacement motor (15); The conformable coating mechanism further comprises: a coil spring (17), one end of the coil spring (17) being fixedly arranged on the lower surface of the displacement seat (10), and the other end of the coil spring (17) being fixedly connected to one end of a pulling rope (18), and the other end of the pulling rope (18) being fixedly connected to a pulling plate (19), a contact ball (20) being embeddedly installed on the upper surface of the pulling plate (19), and a coating head (21) being slidably installed on the lower end of the pulling plate (19), an output tube (22) being provided on the inner surface of the coating head (21), and the upper end of the output tube (22) passing through the upper outer surface of the coating head (21), and a connector (23) being fixedly connected to the upper end of the output tube (22), and the lower end of the output tube (22) passing through the inner surface of the coating head (21), a guide hose (24) being connected between the connector (23) and the liquid pump (8), and a rotating smear plate (25) being installed on the side surface of one end of the coating head (21); The pulling rope (18) passes through the outer surface of the guide frame (5), and the end of the pulling rope (18) connected to the displacement seat (10) is located in the middle of the lower end surface of the displacement seat (10), and the end of the pulling rope (18) connected to the pulling plate (19) is located in the middle of the upper end surface of the pulling plate (19); A spring is connected between the pulling plate (19) and the coating head (21), and the inner surface of the coating head (21) is in contact with the outer surface of the blade body (3); The contact ball (20) protrudes from the upper surface of the pulling plate (19), and the outer surface of the contact ball (20) fits the outer surface of the contact capsule (7); the smear plate (25) is of arc-shaped design, and the outer surface of the lower end of the smear plate (25) fits the outer surface of the blade body (3); and the smear plate (25) is a plate made of silicone material.

2. The multi-angle adjustable wind turbine blade bonding device according to claim 1 is characterized in that: The guide frame (5) is of continuous arc design, and is of C-shaped design with a groove at one end. The contact capsule (7) is a hollow capsule made of soft silicone material, and the interior of the contact capsule (7) is filled with paraffin. The outer surface shape of the contact capsule (7) is the same as the outer surface shape of the blade body (3).

3. The multi-angle adjustable wind turbine blade bonding device according to claim 1 is characterized in that: One end of the displacement wheel (11) passes through the lower end surface of the displacement seat (10), and the displacement wheel (11) and the power gear (12) are designed to be concentric, and the power gear (12) and the transmission gear (13) are meshed and connected, the reversing gear (14) and the driving gear (16) are both designed as bevel gears, and the reversing gear (14) and the driving gear (16) are meshed and connected, and the outer surface of the displacement wheel (11) is in contact with the outer surface of the guide frame (5).

4. A method for using a wind turbine blade bonding device with multi-angle adjustment according to any one of claims 1 to 3, characterized in that: The method of use includes the following steps: S1. Place the blade body (3) on the support platform (2); S2. shaping the contact capsule (7) by the paraffin in the contact capsule (7); S3. Add a sufficient amount of adhesive to the liquid storage tank (4); S4. Start the displacement motor (15) to drive the displacement seat (10) to move on the guide frame (5); S5. The displacement seat (10) pulls the pulling plate (19) through the pulling rope (18) connected to one end of the coil spring (17), and the pulling plate (19) moves along the contact capsule (7) in the actual shape of the outer surface of the edge of the blade body (3); S6. The coating head (21) sucks the adhesive in the liquid storage tank (4) into the output pipe (22) through the liquid pump (8), and the coating head (21) applies the adhesive to the outer surface of the edge of the blade body (3); S7. The trowel plate (25) scrapes the adhesive on the outer edge surface of the blade body (3) by contacting the outer edge surface of the blade body (3).

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