Automatic cutting machine for wind power blade web bonding flange

Abstract

The automatic cutting machine for the wind power blade web bonding flange comprises a cutting machine main body, the cutting machine main body comprises a cover body, a cutting assembly, a polishing assembly and a demolding cloth removing assembly, and the cover body drives the cutting machine main body to slide so as to machine the web flange; the cutting assembly comprises a cutting driving part and a cutting blade which are in driving connection, and the cutting blade is used for cutting the web flange; the grinding assembly comprises a grinding driving part and a grinding blade which are in driving connection, and the grinding blade is used for grinding the cut web flange; the demolding cloth removing assembly comprises a demolding driving piece and a demolding rotating shaft which are in driving connection, and the demolding rotating shaft is used for removing the demolding cloth from the web flange during rotation. The working efficiency is improved, the labor intensity is reduced, the web flange is cut flatly, dust generated by grinding is prevented from harming operators, industrial accidents are avoided, the demolding driving part drives rotation to automatically strip demolding cloth on the bonding face of the web flange, and the web flange is prevented from being damaged.

Description

Technical Field

[0001] This application relates to the field of wind turbine blade production equipment technology, and in particular to an automatic cutting machine for the web bonding flange of a wind turbine blade. Background Technology

[0002] Wind power generation refers to the process of converting wind energy into mechanical kinetic energy, and then into electrical energy. The blades, as the most important component of a wind turbine, play a crucial role in capturing wind energy. A wind turbine blade comprises the main structure, including the main beam, trailing edge beam, web, and shell. The web, within the shell, supports the windward and leeward sides of the shell and transmits shear resistance. During the manufacturing process, adhesives are typically used to bond the web to the inner wall of the shell. Flanges are located at the ends of the web, and the web is bonded to the inner wall of the shell through the bonding surfaces of the flanges. This increases the bonding area between the web and the inner wall of the shell, enhancing the web's support and shear resistance within the shell.

[0003] Increasing the surface roughness of the web flange bonding surface helps to increase the bonding strength and effect between the web and the inner wall of the shell. Furthermore, precise control of the flange dimensions can effectively avoid adhesive waste or insufficient bonding area during the bonding process. Currently, during web molding, a release cloth (a rough-surfaced auxiliary material, made of nylon, which does not bond strongly with fiberglass and leaves a rough surface after removal) is added to the outer surface of the flange. After removal, a relatively rough bonding surface is obtained. There are two methods for precise control of the web flange dimensions: precise cutting of fiberglass cloth and manual cutting later. Precise cutting involves accurately calculating the shape and size of the fiberglass cloth in the early stages of web molding, and precise positioning during web fabrication to ensure accurate flange dimensions, eliminating the need for later cutting and trimming. Manual cutting involves manually cutting the flange with a manual cutting machine after the web is removed from the mold to meet the dimensional specifications and ensure smooth edges.

[0004] Currently, the removal of release fabric from the web flange is done manually, often using tools like utility knives, which is labor-intensive and prone to damaging the web. While precision cutting of fiberglass cloth ensures accurate dimensions, it frequently suffers from issues such as low positioning accuracy and cloth deformation. As blade sizes increase, the workload also grows. Subsequent manual cutting, typically done by hand with a cutting device, suffers from large tolerances, low flatness, low efficiency, high labor intensity, and difficulty in guaranteeing quality. Furthermore, the dust pollution generated during cutting and polishing is extremely serious, posing a significant health hazard to operators and increasing the risk of workplace injuries. Summary of the Invention

[0005] This application provides an automatic cutting machine for the web bonding flange of wind turbine blades to solve the problems existing in the prior art, improve work efficiency, reduce labor intensity, achieve flat cutting of web flanges, avoid dust generated during grinding from harming workers, and avoid work-related accidents. The machine automatically peels off the release cloth on the bonding surface of the web flange by rotating the demolding drive component, without manual operation, thus avoiding damage to the web flange.

[0006] The automatic cutting machine for the web bonding flange of wind turbine blades provided in this application includes: a cutting machine body, the cutting machine body including a cover and a cutting assembly, a grinding assembly and a release cloth removal assembly connected to the cover; the cover is movably configured to drive the cutting machine body to slide to process the web flange; the cutting assembly includes a cutting drive component and a cutting blade connected by a drive, the cutting blade being used to cut the web flange; the grinding assembly includes a grinding drive component and a grinding blade connected by a drive, the grinding blade being used to grind the cut web flange; the release cloth removal assembly includes a release drive component and a release shaft connected by a drive, the release shaft being used to remove the release cloth from the web flange during rotation.

[0007] Optionally, the cutting drive includes a cutting motor, and the cutting blade is mounted on the cutting shaft of the cutting motor; the cutting motor is axially movable forward and backward along the cutting shaft to adjust the position of the cutting blade cutting the web flange.

[0008] Optionally, the cutting machine body further includes a connecting flange installed on the cover, the connecting flange being connected to an automated guided vehicle (AGV) so that the cover can be moved by the AAV.

[0009] Optionally, the cutting motor is equipped with a distance sensor and a position adjuster; when the distance sensor detects that the vertical distance to the web is less than a first preset value, the position adjuster controls the cutting motor to move backward; when the distance sensor detects that the vertical distance to the web is greater than a second preset value, the position adjuster controls the cutting motor to move forward.

[0010] Optionally, the position adjuster includes a controller located on the automated guided vehicle (AGV), the controller being controlled and connected to the steering mechanism of the AGV.

[0011] Optionally, the position adjuster includes a drive cylinder located inside the cover, the cylinder body of the drive cylinder is mounted on the cover, and the drive rod of the drive cylinder is connected to the cutting motor; the position adjuster is controlled to the drive cylinder.

[0012] Optionally, the end of the position adjuster is provided with an end plate, which is mounted on the cutting motor; the cutting motor is slidably disposed within the cover.

[0013] Optionally, the outer side of the drive cylinder is provided with a bellows, and the two ends of the bellows are respectively installed on the end plate and the cover.

[0014] Optionally, the outer shaft surface of the demolding shaft is provided with a dovetail groove along the axial direction; one end of the demolding cloth is laid in the dovetail groove and then fixed by a wedge block embedded in the dovetail groove.

[0015] Optionally, the cover is provided with a dust removal mounting hole; the cover is connected to a negative pressure dust collection device, which includes a negative pressure dust collection pipe and a dust collector connected together; the negative pressure dust collection pipe is installed on the dust removal mounting hole.

[0016] The above technical solution has the following beneficial effects:

[0017] The automatic cutting machine for the web bonding flange of wind turbine blades provided in this application moves the cover body, which drives the main body of the cutting machine to move along the edge of the web flange to be cut. During the movement of the cover body, the cutting blade rotates to perform the initial cutting of the web flange, improving work efficiency, reducing labor intensity, and ensuring a smooth cut of the web flange. The grinding blade, which can be a grinding wheel or a milling cutter, is located behind the cutting blade and is used to repair and grind the burrs and uneven cross-sections generated during the cutting of the web flange, so as to achieve a neat surface of the web flange cut surface and avoid the dust generated by grinding from harming the operators and preventing work-related accidents. The demolding shaft is located below the cover body and is driven to rotate by the demolding drive component to automatically peel off the demolding cloth on the bonding surface of the web flange without manual operation, reducing labor intensity and avoiding damage to the web flange. Attached Figure Description

[0018] The preferred embodiments of this application will now be described in detail with reference to the accompanying drawings to aid in understanding the purpose and advantages of this application, wherein:

[0019] Figure 1 This is a schematic diagram of the structure in which the web plate is installed inside the blade housing via a web plate flange.

[0020] Figure 2 A perspective view of an automatic cutting machine for bonding flanges to the web of wind turbine blades, provided as an optional embodiment of this application.

[0021] Figure 3 A side view of an automatic cutting machine for bonding flanges to the web of wind turbine blades, provided in an optional embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Cut machine body;

[0024] 2-Cover body, 20-Connecting flange, 21-Dust removal mounting hole;

[0025] 3-Cutting assembly, 30-Cutting drive, 300-Distance sensor, 31-Cutting blade;

[0026] 4-Grinding assembly, 40-Grinding drive, 41-Grinding blade;

[0027] 5- Release cloth removal assembly, 50- Release drive component, 51- Release shaft;

[0028] 6-Wind turbine blade, 60-Web plate, 61-Web plate flange;

[0029] 7-Automatic Guided Vehicle;

[0030] 8-End plate, 80-Corrugated pipe;

[0031] 9-Support base, 90-Hanging rod, 91-Adsorption port, 92-Adsorption channel. Detailed Implementation

[0032] The technical solution of the present invention will be further described in detail below with reference to embodiments and accompanying drawings. The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0033] This application provides an automatic cutting machine for bonding flanges on the web of wind turbine blades, including: a cutting machine body 1, wherein the cutting machine body 1 includes a cover 2 and a cutting assembly 3, a grinding assembly 4 and a release cloth removal assembly 5 connected to the cover 2.

[0034] The cover 2 is movably configured to move the cutting machine body 1 to process the web flange 61. The web flange 61 is located on the wind turbine blade 6 at the following position: Figure 1 As shown, both ends of the web plate 60 are provided with web plate flanges 61, which are attached to the windward and leeward sides of the wind turbine blade 6 to support the wind turbine blade 6.

[0035] like Figure 2As shown, the cutting assembly 3 includes a cutting drive component 30 and a cutting blade 31 connected by a drive. The cutting blade 31 cuts the web flange 61 under the drive of the cutting drive component 30. The grinding assembly 4 includes a grinding drive component 40 and a grinding blade 41 connected by a drive. The grinding blade 41 grinds the cut web flange 61 under the drive of the grinding drive component 40. The demolding cloth removal assembly 5 includes a demolding drive component 50 and a demolding shaft 51 connected by a drive. Initially, the end of the demolding cloth is installed on the demolding shaft 51. When the demolding shaft 51 rotates, the demolding cloth is wrapped around it, thereby removing the demolding cloth from the web flange 61.

[0036] Please refer to Figure 3 The main body 1 of the cutting machine also includes a support frame, which includes a support base 9 and a hanging rod 90 located on the upper part of the support base 9. The support base 9 has at least two adsorption ports 91 connected to the bottom surface of the support base 9. The support base 9 has an adsorption channel 92 connected to the at least two adsorption ports 91. The adsorption channel 92 is connected to a negative pressure device. The negative pressure device draws a vacuum to create a vacuum environment at the adsorption ports 91, thereby adsorbing the upper part of the web flange 61. This ensures the positioning effect of the web flange 61 while avoiding positional interference with the demolding shaft 51 at the lower part of the web flange 61 when removing the demolding cloth.

[0037] The relative position of the web flange 61 to the cutting machine body 1 is as follows: Figure 3 As shown, the movement of the cover 2 drives the main body 1 of the cutting machine to move along the edge of the web flange 61 to be cut. During the movement of the cover 2, the cutting blade 31 rotates to perform an initial cut on the web flange 61, improving work efficiency, reducing labor intensity, and ensuring that the web flange 61 is cut smoothly. The grinding blade 41, which can be a grinding wheel or a milling cutter, is located behind the cutting blade 31. It repairs and grinds the burrs and uneven cross-sections generated during the cutting of the web flange 61 to achieve a neat surface on the cut surface of the web flange 61, avoiding dust generated during grinding that could harm workers and prevent work-related accidents. The demolding shaft 51 is located below the cover 2. It is driven to rotate by the demolding drive component 50 to automatically peel off the demolding cloth from the bonding surface of the web flange 61 without manual operation, reducing labor intensity and avoiding damage to the web flange 61.

[0038] In an optional embodiment, the cutting drive 30 includes a cutting motor, and the cutting blade 31 is mounted on the cutting shaft of the cutting motor. The cutting motor is axially movable forward and backward along the cutting shaft to adjust the position of the cutting blade 31 cutting the web flange 61. The cutting motor can be mounted on the cover 2 via a linear slide or servo electric cylinder, allowing the cutting motor to move precisely forward and backward along the axial direction of the cutting shaft of the cutting blade 31 (with the direction closer to the web 60 defined as forward and the direction farther from the web 60 defined as backward), so as to flexibly adjust the cutting position of the cutting blade 31 according to the width or cutting depth requirements of different types of web flanges 61.

[0039] In an optional embodiment, the cutting machine body 1 further includes a connecting flange 20 mounted on the cover 2, the connecting flange 20 being connected to an automated guided vehicle 7, through which the cover 2 is moved. Figure 3 As shown, the Automated Guided Vehicle (AGV) 7 serves as the mobile chassis of the equipment, moving along a pre-planned path (usually along one side of the web flange 61) to precisely pull or push the entire cutting machine body 1 to move smoothly and complete long-distance, high-curvature continuous processing tasks.

[0040] In addition, a manual trolley can be connected via the connecting flange 20, allowing the cover 2 to be moved manually along the marked lines on the ground.

[0041] In an optional embodiment, the cutting motor is equipped with a distance sensor 300 and a position adjuster. When the distance sensor 300 detects that the vertical distance to the web 60 is less than a first preset value, the position adjuster controls the cutting motor to move backward. When the distance sensor 300 detects that the vertical distance to the web 60 is greater than a second preset value, the position adjuster controls the cutting motor to move forward. The distance sensor 300 can be an ultrasonic distance sensor 300 or a laser distance sensor 300, used to detect the vertical distance between the end face of the cutting blade 31 (the end face facing or away from the web 60) and the web 60. Before cutting, set the required cutting distance value for cutting the web 60, and set the first preset value and the second preset value according to the tolerance requirements. The absolute value of the difference between the first preset value, the second preset value and the cutting distance value can be controlled to be less than or equal to 1cm. When the vertical distance detected by the distance sensor 300 is less than the first preset value or greater than the second preset value, it indicates that the distance of the cutting blade 31 from the preset cutting position exceeds the allowable tolerance range. At this time, the position adjuster drives the cutting motor to move back and forth along the axial direction of the cutting shaft so that the cutting blade 31 moves to the required working range to cut the web flange 61.

[0042] Among them, the adjacent hangers 90 of the support base 9 are intermittently distributed at a certain distance, and a smaller thickness is used in the moving direction of the automatic cutting machine for bonding flanges of wind turbine blade web, thereby reducing the impact on the operation of distance sensor 300.

[0043] In an optional embodiment for adjusting the vertical distance between the cutting blade 31 and the web 60, the position adjuster includes a controller located on the automated guided vehicle (AGV) 7, which is controlled by the steering mechanism of the AAV 7. The mechanism and principle by which the steering mechanism of the AAV 7 controls its steering are existing technologies and will not be described further here. Based on the distance value detected by the distance sensor 300, the controller of the position adjuster sends a steering signal to the steering mechanism of the AAV 7 when it determines that the cutting position needs to be adjusted. The steering signal causes the steering mechanism to rotate the AAV 7 as required, thereby moving the entire cutting machine body 1 slightly away from or closer to the web 60, thus adjusting the vertical distance between the cutting blade 31 and the web 60.

[0044] In another optional embodiment for adjusting the vertical distance between the cutting blade 31 and the web 60, the position adjuster includes a drive cylinder located within the housing 2, the cylinder body of which is mounted on the housing 2, and the drive rod of which is connected to the cutting motor; the position adjuster is controlled to the drive cylinder. The position adjuster also includes a controller capable of controlling an electro-hydraulic servo valve or proportional valve of the drive cylinder. By controlling the electro-hydraulic servo valve or proportional valve of the drive cylinder, the inlet and outlet of oil (or air) of the drive cylinder are precisely controlled, thereby causing the drive rod to push the cutting motor forward or pull it backward, achieving stepless forward and backward position adjustment of the cutting motor.

[0045] In one optional embodiment, the end of the position adjuster is provided with an end plate 8, which is mounted on the cutting motor; the cutting motor is slidably disposed within the cover 2. The cutting motor can move forward and backward within the cover 2 under the drive of the drive rod.

[0046] Furthermore, a slide rail is provided on the inner wall of the housing 2, and a slider is provided on the base of the cutting motor. The slider is slidably mounted on the slide rail to support and guide the cutting motor. A damping mechanism is provided between the slide rail and the cutting motor. An end plate 8 is connected to the end of the drive rod, which can stably drive the cutting motor to move forward and backward. The end plate 8 can be rigidly connected to the cutting motor by bolts. The base of the cutting motor is mounted on the slide rail of the housing 2 via the slider assembly. The damping mechanism can be a damping pad, which is provided between the mounting surfaces of the slider and the slide rail to increase the stability of the cutting motor sliding relative to the slide rail.

[0047] In an optional embodiment, a bellows 80 is provided on the outer side of the drive cylinder, with both ends of the bellows 80 respectively mounted on the end plate 8 and the cover 2. The retractable bellows 80 completely covers the drive cylinder to isolate it from dust and debris in the working environment, protecting the surface of the drive rod from scratches and contamination. One end of the bellows 80 is fixed to the cover 2, and the other end is fixed to the end plate 8. As the drive rod extends or retracts, the bellows 80 also compresses or extends accordingly, always providing effective protection.

[0048] Furthermore, the bellows 80 is connected to a micro-positive pressure air pipeline. A miniature air pump continuously introduces filtered, clean, and dry slightly positive pressure air into the bellows 80. The slightly positive pressure air escapes from both ends of the bellows 80, forming an air curtain seal. This further prevents dust from entering through the gaps at the joints at both ends of the bellows 80, greatly extending the service life of the drive cylinder.

[0049] In an optional embodiment, the outer shaft surface of the demolding shaft 51 is provided with a dovetail groove along the axial direction; one end of the demolding cloth is laid in the dovetail groove and then fixed by a wedge block embedded in the dovetail groove. Before starting work, the worker inserts the starting end of the demolding cloth into the dovetail groove, and then slides a matching wedge block into the dovetail groove from the side opening of the dovetail groove. Utilizing the radial self-locking characteristics of the dovetail groove and the wedge block, the starting section of the demolding cloth is pressed and fixed to prevent slippage or falling off during the winding process of the demolding shaft 51.

[0050] In one optional embodiment, the cover 2 has a dust removal mounting hole 21; the cover 2 is connected to a negative pressure dust collection device, which includes a connected negative pressure dust collection pipe and a dust collector; the negative pressure dust collection pipe is installed in the dust removal mounting hole 21. The negative pressure dust collection device collects the dust generated during cutting and grinding in real time, keeping the working environment clean and preventing dust from contaminating the bonding surface or affecting the working equipment.

[0051] It should be further explained that the grinding blade 41 can also move under the drive of the grinding drive 40. The grinding drive 40 can be connected to the cutting drive 30 by a fixed rod to achieve synchronous back and forth movement with the cutting drive 30. Alternatively, a distance sensor 300 and a position adjuster with the same working principle as the cutting drive 30 can be used to adjust the grinding position of the web flange 61.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An automatic cutting machine for bonding flanges on the web of wind turbine blades, characterized in that, include: The cutting machine body includes a cover and a cutting assembly, a grinding assembly, and a release cloth removal assembly connected to the cover. The cover is movable, which drives the main body of the cutting machine to slide to process the web flange; The cutting assembly includes a cutting drive component and a cutting blade connected by a drive, the cutting blade being used to cut the web flange; The grinding assembly includes a grinding drive and a grinding blade connected by a drive, the grinding blade being used to grind the cut web flange; The release cloth removal assembly includes a release drive and a release shaft connected by a drive, the release shaft being used to remove the release cloth from the web flange during rotation.

2. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 1, characterized in that, The cutting drive includes a cutting motor, and the cutting blade is mounted on the cutting shaft of the cutting motor; The cutting motor is axially movable forward and backward along the cutting shaft to adjust the position of the cutting blade cutting the web flange.

3. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 2, characterized in that, The main body of the cutting machine also includes a connecting flange installed on the cover, which is connected to an automated guided vehicle (AGV) and the AGV moves the cover.

4. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 3, characterized in that, The cutting motor is equipped with a distance sensor and a position adjuster; When the distance sensor detects that the vertical distance to the web is less than a first preset value, the position adjuster controls the cutting motor to move backward; When the distance sensor detects that the vertical distance to the web plate is greater than a second preset value, the position adjuster controls the cutting motor to move forward.

5. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 4, characterized in that, The position adjuster includes a controller located on the automated guided vehicle (AGV), which is controlled and connected to the steering mechanism of the AGV.

6. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 4, characterized in that, The position adjuster includes a drive cylinder located inside the cover, the cylinder body of the drive cylinder is mounted on the cover, and the drive rod of the drive cylinder is connected to the cutting motor; The position adjuster is controlled and connected to the drive cylinder.

7. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 6, characterized in that, The position adjuster is provided with an end plate at its end, and the end plate is mounted on the cutting motor; The cutting motor is slidably mounted inside the cover.

8. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 7, characterized in that, The outer side of the drive cylinder is covered with a bellows, and the two ends of the bellows are respectively installed on the end plate and the cover.

9. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 1, characterized in that, The outer shaft surface of the demolding shaft is provided with a dovetail groove along the axial direction. One end of the release cloth is laid in the dovetail groove and then fixed in the dovetail groove by a wedge block.

10. The automatic cutting machine for bonding flanges of wind turbine blade webs according to claim 1, characterized in that, The cover is provided with dust removal mounting holes; The cover is connected to a negative pressure dust collection device, which includes a negative pressure dust collection pipe and a dust collector connected together. The negative pressure suction pipe is installed on the dust removal mounting hole.

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