A mold and a mold closing method for wind power blade manufacturing process

Abstract

The application relates to the technical field of free-tryout die technology, and discloses a free-tryout die for a wind power blade manufacturing process and a die closing method, which adopts a measuring device to form repeatable measurement, has good measurement precision, omits the tryout die process during measurement, has high measurement efficiency, good measurement repeatability, and further improved practicality, and comprises a die reference base device, a measuring device and a data collection and calculation system, wherein the die reference base device comprises a fixed bottom die base and an opening and closing top die base, the fixed bottom die base and the opening and closing top die base are rotationally connected with each other, an opening and closing die driving assembly is arranged between the fixed bottom die base and the opening and closing top die base, the fixed bottom die base and the opening and closing top die base are respectively provided with SS-face die cavities and PS-face die cavities, the measuring device comprises a movable support, the movable support is slidably connected with the fixed bottom die base, an electric telescopic rod is arranged on the fixed bottom die base, and the telescopic rod of the electric telescopic rod is connected with the movable support.

Description

Technical Field

[0001] This invention relates to the field of mold-making technology that requires no trial fitting, and specifically to a mold and method for mold-making without trial fitting in the manufacturing process of wind turbine blades. Background Technology

[0002] As is well known, the trial-free mold for wind turbine blade manufacturing is a specially designed and manufactured tool that can accurately and efficiently complete the mold closing and inspection of the upper and lower shells of the blade without the need for traditional trial mold closing steps during the wind turbine blade production process.

[0003] With the rapid development of clean energy, wind power has become an important direction for the development of the new energy industry due to its large capacity, pollution-free nature, and renewability. Wind turbine blades are key components of wind power generation. In the manufacturing process of wind turbine blades, since wind turbine blades are composed of PS surface skin, SS surface skin, and web bonded together, the existing bonding process is to bond the web to the PS surface, place modeling clay at the bonding position of the SS surface, squeeze the modeling clay through a trial mold, and measure the thickness of the modeling clay after deformation to reflect the thickness of the adhesive layer at the location of the modeling clay.

[0004] While the above methods can assist in the fabrication of wind turbine blades, the process requires a large amount of clay. In actual measurement, the measuring personnel need to use vernier calipers to measure a large amount of data. Different measuring personnel have different measuring techniques, which can easily lead to measurement deviations. The subsequent preparation error is relatively large, and the work efficiency needs to be further improved, with poor repeatability. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mold and method for wind turbine blade manufacturing that eliminates the need for trial molding. It employs a measuring device to achieve repeatable measurements with good accuracy. Furthermore, it eliminates the need for trial molding during measurement, resulting in higher measurement efficiency, better repeatability, and enhanced practicality.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a trial mold for wind turbine blade manufacturing without trial molding, comprising a mold reference base device, a measuring device, and a data aggregation and calculation system. The mold reference base device includes a fixed bottom mold base and an opening and closing top mold base, which are rotatably connected to each other. An opening and closing mold drive assembly is installed between the fixed bottom mold base and the opening and closing top mold base. The fixed bottom mold base and the opening and closing top mold base are respectively provided with a mold cavity with an SS surface and a mold cavity with a PS surface. The measuring device includes a movable bracket, which is slidably connected to the fixed bottom mold base. An electric telescopic rod is installed on the fixed bottom mold base. The telescopic rod of the electric telescopic rod is connected to the movable bracket. An automatic telescopic frame is installed on the movable bracket. The automatic telescopic frame is provided with multiple mounting base surfaces. The data aggregation and calculation system includes a computer and multiple laser rangefinders. The multiple laser rangefinders are respectively installed at the bottom ends of the multiple mounting base surfaces. The computer is installed at the end of the movable bracket away from the automatic telescopic frame.

[0007] Preferably, the automatic telescopic frame includes a fixed mounting base and multiple cross brackets. The fixed mounting base is fixedly connected to the movable bracket. Except for the leftmost cross bracket, each of the other cross brackets has three supporting shafts fixedly connected to it. Each of the supporting shafts has an inner rotating link and an outer rotating link rotatably connected to it. Adjacent inner and outer rotating links are rotatably connected to each other. The three leftmost inner rotating links are each rotatably connected to an outer tail link, and the three leftmost outer rotating links are each rotatably connected to an inner tail link. The three outer tail links and... All three inner tail links are rotatably connected to the leftmost cross bracket. All three rightmost inner rotating links are rotatably connected to outer head links. All three rightmost outer rotating links are rotatably connected to inner head links. All three outer head links and three inner head links are rotatably connected to the fixed mounting base. An electric control rod is mounted on the fixed mounting base. The telescopic rod of the electric control rod is connected to an external connecting rod. The external connecting rod is fixedly connected to one of the three rightmost inner head links. Multiple mounting bases are respectively set at the bottom end of the multiple cross brackets.

[0008] Preferably, a connecting ring is fixedly connected to the external rod, and a connecting column is rotatably connected inside the connecting ring. The connecting column is connected to the telescopic rod of the electric control rod.

[0009] Preferably, a rotating column is rotatably connected to the fixed mounting base, and the electric control rod is installed at the top of the rotating column.

[0010] Preferably, the mold opening and closing drive assembly includes a drive shaft and multiple support seats. The multiple support seats are all fixedly connected to the fixed bottom mold seat and rotatably connected to the drive shaft. The drive shaft is fixedly connected to the opening and closing top mold seat. A drive disk is fixedly connected to the drive shaft. A winding rope is wound on the drive disk. Electric coordinating rods are installed at both ends of the winding rope. Both electric coordinating rods are connected to the fixed bottom mold seat.

[0011] Preferably, both of the electric coordinating rods are connected to rotating sleeves, and both rotating sleeves are rotatably connected to the fixed bottom mold base.

[0012] Preferably, the drive disc has a threaded opening, a threaded rod is internally threaded into the threaded opening, and the winding rope has an insertion port that matches the threaded rod.

[0013] Preferably, a plurality of support seats are fixedly connected to the opening and closing top mold base, and the plurality of support seats are all fixedly connected to the drive shaft.

[0014] Preferably, the fixed bottom mold base has a track opening, and a track rod is slidably connected in the track opening, and the track rod is fixedly connected to the movable bracket.

[0015] A mold-closing method for a trial-free mold used in the manufacturing process of wind turbine blades includes the following steps:

[0016] S1. The opening and closing mold drive assembly is used to open the top mold base relative to the fixed bottom mold base, and then the wind turbine blade can be manufactured. After the SS skin is equipped in the mold cavity of the SS surface, the automatic telescopic frame is adjusted so that multiple laser rangefinders are positioned relative to the fixed bottom mold base, and the multiple laser rangefinders are positioned relative to the measurement point. Then the height of the SS skin from the laser rangefinder is measured, and multi-point detection is formed according to the specific size of the wind turbine blade, and the data is recorded by computer.

[0017] S2. After the web plate inside the mold cavity of the PS surface is bonded to the PS skin, the movable support is adjusted by moving relative to the fixed bottom mold base. The automatic telescopic frame on the movable support is controlled to enter the upper part of the mold cavity of the PS surface. Multiple laser rangefinders are used to measure the height of the web plate from the laser rangefinder. Multi-point detection is formed according to the specific size of the wind turbine blade, and the data is recorded by computer.

[0018] S3. After data acquisition, the computer summarizes the measured data to simulate the mold closing situation of PS and SS surfaces. Similarly, the adhesive layer of other bonding areas is measured to achieve the purpose of mold closing measurement without trial. The subsequent production of wind turbine blades can be carried out based on the measurement data.

[0019] Compared with the prior art, the present invention provides a mold and mold-closing method for wind turbine blade manufacturing without trial fitting, which has the following beneficial effects:

[0020] (1) In this invention, by equipping the mold reference base device, a mold for making wind turbine blades is formed, which facilitates the production of wind turbine blades and has automatic opening and closing control functions, and its practicality is further enhanced.

[0021] (2) In this invention, the design of the measuring device forms a mounting bracket structure for multiple laser rangefinders, which facilitates the arrangement of multiple laser rangefinders relative to the measuring position and the placement of the bracket, resulting in higher measurement efficiency and better repeatability of the measurement.

[0022] (3) In this invention, by equipping the data collection and calculation system, the web plate in the matching mold reference base device forms actual data measurement, the measurement accuracy is better, and the measured data forms corresponding calculations and processing to realize mold closing data simulation, eliminating the trial mold closing process during measurement. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0024] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0025] Figure 3 This is a three-dimensional structural diagram of the fixed bottom mold base, support base and rotating sleeve of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the movable support, electric telescopic rod, and track rod of the present invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the supporting coupling, inner rotating connecting rod, and outer rotating connecting rod of the present invention;

[0028] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the local structure at point B;

[0029] Figure 7 This is a bottom-view three-dimensional structural diagram of the fixed bottom mold base, the opening and closing top mold base, and the movable support of the present invention.

[0030] Figure 8 This is a bottom-view perspective view of the three-dimensional structure of the fixed bottom mold base of the present invention;

[0031] Figure 9 This is a bottom-view three-dimensional structural diagram of the laser rangefinder, fixed mounting base, and cross bracket of the present invention.

[0032] Figure 10 This is a three-dimensional structural diagram of the cooperation between the opening and closing top mold base, the movable support, and the computer of the present invention;

[0033] Figure 11 This is a three-dimensional structural diagram of the cooperation between the movable bracket and the support base of the present invention;

[0034] Figure 12 This is a three-dimensional structural diagram of the drive disk of the present invention;

[0035] Figure 13 This is a three-dimensional structural diagram of the winding rope of the present invention;

[0036] Figure 14 This is a schematic diagram illustrating the principle of the laser rangefinder of the present invention for measuring the web formation within the mold cavity of the PS surface;

[0037] Figure 15 This is a schematic diagram illustrating the principle of measuring the web formation within the mold cavity of the laser rangefinder of the present invention relative to the SS surface;

[0038] Figure 16 This is a schematic diagram illustrating the principle of mold closing for simulating PS and SS surfaces in this invention.

[0039] In the diagram: 1. Fixed bottom mold base; 2. Opening and closing top mold base; 3. Movable bracket; 4. Electric telescopic rod; 5. Mounting base; 6. Computer; 7. Laser rangefinder; 8. Fixed mounting base; 9. Cross bracket; 10. Support shaft; 11. Inner rotating link; 12. Outer rotating link; 13. Outer tail link; 14. Inner tail link; 15. Outer head link; 16. Inner head link; 17. Electric control rod; 18. Connecting ring; 19. Connecting column; 20. Rotating column frame; 21. Drive shaft; 22. Support base; 23. Drive disc; 24. Winding rope; 25. Electric coordinating rod; 26. Rotating sleeve; 27. Threaded rod; 28. Support seat; 29. ​​Track opening; 30. Track rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example

[0042] Please see Figures 1-16A trial-fit mold for wind turbine blade manufacturing without trial fitting includes a mold reference base device, a measuring device, and a data collection and calculation system. The mold reference base device includes a fixed bottom mold base 1 and an opening / closing top mold base 2, which are rotatably connected to each other. An opening / closing mold drive assembly is installed between the fixed bottom mold base 1 and the opening / closing top mold base 2. The opening / closing mold drive assembly includes a drive shaft 21 and multiple support seats 22. The multiple support seats 22 are all fixedly connected to the fixed bottom mold base 1 and rotatably connected to the drive shaft 21. The drive shaft 21 is fixedly connected to the opening / closing top mold base 2. A drive disc 23 is fixedly connected to the drive shaft 21, and a winding rope 24 is wound on the drive disc 23. Both ends of the winding rope 24 are equipped with... Two electric coordinating rods 25 are connected to the fixed bottom mold base 1. Each electric coordinating rod 25 is connected to a rotating sleeve 26, which is rotatably connected to the fixed bottom mold base 1. The drive disc 23 has a threaded opening, and a threaded rod 27 is threadedly connected to the threaded opening. The winding rope 24 has an insertion port that matches the threaded rod 27. Multiple support seats 28 are fixedly connected to the opening and closing top mold base 2, and each support seat 28 is fixedly connected to the drive shaft 21. The fixed bottom mold base 1 and the opening and closing top mold base 2 have mold cavities with SS surface and PS surface, respectively. With the configuration of the mold reference base device, a mold for making wind turbine blades is formed, which facilitates the production of wind turbine blades and has automatic opening and closing control functions, further enhancing its practicality.

[0043] It should be further explained that the measuring device includes a movable support 3, which is slidably connected to a fixed base mold 1. A track opening 29 is provided on the fixed base mold 1, and a track rod 30 is slidably connected within the track opening 29. The track rod 30 is fixedly connected to the movable support 3. An electric telescopic rod 4 is installed on the fixed base mold 1, and the telescopic rod of the electric telescopic rod 4 is connected to the movable support 3. An automatic telescopic frame is installed on the movable support 3. The automatic telescopic frame has multiple mounting bases 5, including a fixed mounting base 8 and multiple cross brackets 9. The fixed mounting base 8 is fixedly connected to the movable support 3. Except for the leftmost cross bracket 9, the other multiple cross brackets... Each bracket 9 is fixedly connected to three supporting shafts 10. Each supporting shaft 10 is rotatably connected to an inner rotating link 11 and an outer rotating link 12. Adjacent inner rotating links 11 and outer rotating links 12 are rotatably connected to each other. The three leftmost inner rotating links 11 are rotatably connected to outer tail links 13, and the three leftmost outer rotating links 12 are rotatably connected to inner tail links 14. The three outer tail links 13 and three inner tail links 14 are rotatably connected to one of the leftmost cross brackets 9. The three rightmost inner rotating links 11 are rotatably connected to outer head links 15, and the three rightmost outer rotating links 12 are rotatably connected to inner head links 16. The three outer head links... Link 15 and the three inner head links 16 are rotatably connected to the fixed mounting base 8. An electric control rod 17 is mounted on the fixed mounting base 8. The telescopic rod of the electric control rod 17 is connected to an external rod. The external rod is fixedly connected to one of the three inner head links 16 on the far right. Multiple mounting bases 5 are respectively set at the bottom of the multi-cross bracket 9. A connecting ring 18 is fixedly connected to the external rod. A connecting column 19 is rotatably connected inside the connecting ring 18. The connecting column 19 is connected to the telescopic rod of the electric control rod 17. A rotating column frame 20 is rotatably connected to the fixed mounting base 8. The electric control rod 17 is mounted on the top of the rotating column frame 20. (The last sentence appears to be incomplete and possibly refers to a design of a measuring device.) A mounting bracket structure for multiple laser rangefinders 7 is formed, which facilitates the arrangement and placement of multiple laser rangefinders 7 relative to the measurement position and the bracket. The measurement efficiency is high and the repeatability of the measurement is good. The data collection and calculation system includes a computer 6 and multiple laser rangefinders 7. The multiple laser rangefinders 7 are respectively installed at the bottom of multiple mounting bases 5. The computer 6 is installed at the end of the movable bracket 3 away from the automatic telescopic frame. With the equipment of the data collection and calculation system, the web plate in the matching mold reference base device forms actual data measurement, which improves the measurement accuracy. Furthermore, the measured data is calculated and processed accordingly to realize the simulation of mold closing data, eliminating the need for trial mold closing during measurement.

[0044] In this embodiment, the electric telescopic pole 4, laser rangefinder 7, computer 6, electric control pole 17, and electric coordination pole 25 are all commercially available conventional devices known to those skilled in the art. In this invention, we are simply using them without making any improvements to their structure or function. Their setting method, installation method, and electrical connection method can be easily explained by those skilled in the art by following the instructions for use. Therefore, we will not elaborate on them here.

[0045] In summary, the working principle of the trial-free mold and mold-closing method used in the wind turbine blade manufacturing process is as follows: The mold-opening and closing drive assembly operates to open the top mold base 2 relative to the fixed bottom mold base 1, allowing for wind turbine blade manufacturing. After the SS skin is installed in the mold cavity of the SS surface, the automatic telescopic frame is adjusted to position multiple laser rangefinders 7 relative to the fixed bottom mold base 1, ensuring the laser rangefinders 7 are in place relative to the measurement points. The height of the SS skin from the laser rangefinders 7 is then measured, forming multi-point detection based on the specific dimensions of the wind turbine blade, and recorded by the computer 6. When the web plate in the mold cavity of the PS surface is bonded to the PS skin, the movable support 3 is moved and adjusted relative to the fixed bottom mold base 1, controlling the automatic telescopic frame on the movable support 3 to move above the PS surface mold cavity. Multiple laser rangefinders 7 are used to measure the height of the web plate from the laser rangefinders 7, forming multi-point detection based on the specific dimensions of the wind turbine blade. The data is collected and recorded by computer 6. After the data is collected, computer 6 summarizes the measured data to simulate the mold closing situation of PS and SS surfaces. Similarly, the adhesive layer of other bonding areas is measured to achieve the purpose of mold closing measurement without trial. The subsequent production of wind turbine blades can be carried out based on the measurement data. The telescopic adjustment of the automatic telescopic frame is achieved by changing the position of the telescopic rod of electric control rod 17 relative to electric control rod 17. The mold opening and closing drive assembly works by two electric coordinating rods 25 to drive the traction of the winding rope 24. The movement of the winding rope 24 drives the rotation of the drive disk 23. The rotation of the drive disk 23 drives the rotation of the drive shaft 21. The rotation of the drive shaft 21 drives and controls the rotation of the support seat 28 relative to the support seat 22, thereby achieving the rotation and control of the top mold seat 2 relative to the fixed bottom mold seat 1, and thus facilitating the control of the rotation opening and closing of the top mold seat 2 relative to the fixed bottom mold seat 1.

[0046] Below, we will use six-point detection as an example to demonstrate the specific detection data labeling and calculation steps as follows:

[0047] As attached Figure 14 As shown, adjust the relative position of the laser rangefinder 7 to measure the skin bonded to the PS surface, and use A, B, C, D, E, and F as markers for the six measurement points;

[0048] As attached Figure 15 As shown, adjust the relative position of the laser rangefinder 7 to measure the skin of the SS surface, and use H, I, J, K, L, and M as markers for the six measurement points;

[0049] As attached Figure 16 As shown, simulating the mold closing situation of PS and SS surfaces, it can be known that (A+M) height / (B+L) height / (C+K) height / (D+J) height / (E+I) height / (F+H) height - (laser rangefinder 7 height X2) = thickness of the lower adhesive layer of the web.

[0050] The application of this mold and molding method for wind turbine blade manufacturing eliminates the error caused by manual measurement of clay in terms of quality, reduces the cost of clay production by eliminating the use of clay in the trial molding process, and saves more than 2 hours in terms of efficiency by eliminating the trial molding process.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for trial-free mold assembly in the manufacturing process of wind turbine blades, comprising a mold reference base device, characterized in that, It also includes a measuring device and a data aggregation and calculation system. The mold reference base device includes a fixed bottom mold base (1) and an opening and closing top mold base (2). The fixed bottom mold base (1) and the opening and closing top mold base (2) are rotatably connected to each other, and an opening and closing mold drive assembly is installed between the fixed bottom mold base (1) and the opening and closing top mold base (2). The fixed bottom mold base (1) and the opening and closing top mold base (2) are respectively provided with a mold cavity with an SS surface and a mold cavity with a PS surface. The measuring device includes a movable bracket (3), which is slidably connected to the fixed bottom mold base (1). Connect, and an electric telescopic rod (4) is installed on the fixed bottom mold base (1). The telescopic rod of the electric telescopic rod (4) is connected to the movable bracket (3). An automatic telescopic frame is installed on the movable bracket (3). The automatic telescopic frame is provided with multiple mounting bottom surfaces (5). The data aggregation and calculation system includes a computer (6) and multiple laser rangefinders (7). The multiple laser rangefinders (7) are respectively installed at the bottom of the multiple mounting bottom surfaces (5). The computer (6) is installed on the movable bracket (3) at the end away from the automatic telescopic frame. The automatic telescopic frame includes a fixed mounting base (8) and multiple cross brackets (9). The fixed mounting base (8) is fixedly connected to the movable bracket (3). Except for the leftmost cross bracket (9), each of the other multiple cross brackets (9) is fixedly connected to three supporting shafts (10). Each of the multiple supporting shafts (10) is rotatably connected to an inner rotating link (11) and an outer rotating link (12). The adjacent inner rotating links (11) and outer rotating links (12) are rotatably connected to each other. Each of the three leftmost inner rotating links (11) is rotatably connected to an outer tail link (13). Each of the three leftmost outer rotating links (12) is rotatably connected to an inner tail link (14). The three outer tail links (13) and All three inner tail links (14) are rotatably connected to the leftmost cross bracket (9). All three inner rotating links (11) on the rightmost side are rotatably connected to the outer head link (15). All three outer rotating links (12) on the rightmost side are rotatably connected to the inner head link (16). All three outer head links (15) and three inner head links (16) are rotatably connected to the fixed mounting base (8). An electric control rod (17) is installed on the fixed mounting base (8). The telescopic rod of the electric control rod (17) is connected to an external rod. The external rod is fixedly connected to one of the three inner head links (16) on the rightmost side. Multiple mounting bottom surfaces (5) are respectively set at the bottom of the multiple cross brackets (9). The automatic telescopic frame on the movable support (3) can enter the mold cavity above the SS surface or the mold cavity above the PS surface.

2. The mold for trial-free assembly in the manufacturing process of wind turbine blades according to claim 1, characterized in that, A connecting ring (18) is fixedly connected to the external rod, and a connecting column (19) is rotatably connected inside the connecting ring (18). The connecting column (19) is connected to the telescopic rod of the electric control rod (17).

3. A mold for trial-free assembly during wind turbine blade manufacturing, as described in claim 2, is characterized in that... A rotating column (20) is rotatably connected to the fixed mounting base (8), and the electric control lever (17) is installed at the top of the rotating column (20).

4. A mold for trial-free assembly during wind turbine blade manufacturing, as described in claim 3, is characterized in that... The opening and closing mold driving assembly includes a drive shaft (21) and multiple support seats (22). The multiple support seats (22) are all fixedly connected to the fixed bottom mold seat (1). The multiple support seats (22) are all rotatably connected to the drive shaft (21). The drive shaft (21) is fixedly connected to the opening and closing top mold seat (2). A drive disk (23) is fixedly connected to the drive shaft (21). A winding rope (24) is wound on the drive disk (23). Electric coordinating rods (25) are installed at both ends of the winding rope (24). Both electric coordinating rods (25) are connected to the fixed bottom mold seat (1).

5. A mold for trial-free assembly during wind turbine blade manufacturing according to claim 4, characterized in that, Both of the electric coordinating rods (25) are connected to rotating sleeves (26), and both rotating sleeves (26) are rotatably connected to the fixed bottom mold base (1).

6. A mold for trial-free mold assembly in the manufacturing process of wind turbine blades according to claim 5, characterized in that, The drive disc (23) has a threaded opening, and a threaded rod (27) is threadedly connected to the threaded opening. The winding rope (24) has an insertion port that matches the threaded rod (27).

7. A mold for trial-free assembly during wind turbine blade manufacturing according to claim 6, characterized in that, Multiple support seats (28) are fixedly connected to the opening and closing top mold base (2), and the multiple support seats (28) are all fixedly connected to the drive shaft (21).

8. A mold for trial-free mold assembly in the manufacturing process of wind turbine blades according to claim 7, characterized in that, The fixed bottom mold base (1) has a track opening (29), and a track rod (30) is slidably connected in the track opening (29). The track rod (30) is fixedly connected to the movable bracket (3).

9. A mold-closing method for a trial-free mold-closing mold used in the manufacturing process of wind turbine blades, characterized in that, The method of using a trial-free mold for wind turbine blade manufacturing according to any one of claims 1-8 includes the following steps: S1. By working the mold opening and closing drive assembly, the top mold base (2) is opened relative to the fixed bottom mold base (1), and then the wind turbine blade is made. After the SS skin is equipped in the mold cavity of the SS surface, the automatic telescopic frame is adjusted so that multiple laser rangefinders (7) are positioned relative to the fixed bottom mold base (1), and multiple laser rangefinders (7) are positioned relative to the measurement point. Then the height of the SS skin from the laser rangefinder (7) is measured, and multi-point detection is formed according to the specific size of the wind turbine blade, and the data is recorded by the computer (6). S2. After the web plate inside the mold cavity of the PS surface is bonded to the PS skin, the movable support (3) is moved and adjusted relative to the fixed bottom mold base (1). The automatic telescopic frame on the movable support (3) is controlled to enter the upper part of the mold cavity of the PS surface. Multiple laser rangefinders (7) are used to measure the height of the web plate flange from the laser rangefinder (7). Multi-point detection is formed according to the specific size of the wind turbine blade, and a record is formed by computer (6). S3. After the data acquisition is completed, the computer (6) summarizes the measured data to simulate the mold closing situation of PS surface and SS surface. Similarly, the adhesive layer of other bonding areas is measured to achieve the purpose of mold closing measurement without trial. The subsequent production of wind turbine blades is carried out based on the measurement data.

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