A blade milling device for wind turbine blade machining

Abstract

This invention discloses a blade milling machine for processing wind turbine blades, relating to the technical field of surface milling equipment. The machine includes a conveyor frame, a transverse frame slidably connected to the top of the conveyor frame via a linear motor, and a face milling machine slidably connected to the bottom of the transverse frame via a linear motor. A support sleeve is fixedly connected to the surface of the face milling machine, and a burr removal mechanism is fixedly connected to the front of the support sleeve. The burr removal mechanism includes a scraping and blowing plate frame fixedly connected to the front of the support sleeve. This blade milling machine, by incorporating a burr removal mechanism, a mating surface flattening mechanism, and a debris collection mechanism, cleans residual burrs and fine impurities from the milled surface, blows the removed fine impurities off the mating surface, and recovers the impurities, thus improving the processing quality of the device.

Description

Technical Field

[0001] This invention relates to the field of surface milling equipment technology, specifically to a blade milling processing equipment for wind turbine blade processing. Background Technology

[0002] A wind turbine is a system that converts the kinetic energy of wind into electrical energy. A wind turbine consists of a wind rotor and a generator. The wind rotor contains blades, a hub, and reinforcement components. Among these, the blades are one of the core components of a wind turbine. Existing wind turbine blades are mainly made of glass fiber reinforced composite materials or carbon fiber reinforced composite materials. They are usually mass-produced using a mold-fitting method. To ensure the quality of the mold fit, the mold surface needs to be milled to improve its quality. Patent application CN120190390A discloses a milling device for wind turbine blades, including a track structure, a moving structure, a milling structure, a detection component, and a controller. The moving structure is disposed on the track structure and has a degree of freedom of movement along a first direction relative to the track structure. The moving structure includes a first moving component that can move along a second direction and a third direction. The milling structure includes a second moving component and a milling component that can move along the first direction, the second direction, and the third direction. The detection component is disposed on the milling structure, and the controller is communicatively connected to the detection component. The milling device for wind turbine blades provided by this patent is prone to jamming in its track mechanism and milling mechanism during long-term milling of the blade mating surface, which leads to a decrease in the processing accuracy of the device and thus reduces the processing quality of the device. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a blade milling processing device for wind turbine blades, thereby solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a blade milling processing equipment for wind turbine blade processing, comprising a conveyor frame, a roller rotatably connected to the top of the conveyor frame for assisting in the transfer of blades, a transverse frame slidably connected to the top of the conveyor frame via a linear motor, the transverse frame sliding horizontally on the top of the conveyor frame via a linear motor, a control box fixedly connected to the left side of the conveyor frame, a face milling machine slidably connected to the bottom of the transverse frame via a linear motor, the face milling machine sliding vertically via a linear motor, a face milling cutter rotatably connected to the bottom of the face milling machine, a support sleeve fixedly connected to the surface of the face milling machine, a burr removal mechanism fixedly connected to the front of the support sleeve, the burr removal mechanism including a scraping and blowing plate frame fixedly connected to the front of the support sleeve; The cleaning and blowing plate frame includes: A fixed slide is fixedly connected to the front of the bracket sleeve; The jet scraper is fixedly connected to the bottom of the fixed carriage. A circular blind hole is opened on the back of the jet scraper. A rectangular blind hole communicating with the circular blind hole is opened inside the jet scraper. A pneumatic vibrator is fixedly connected to the top of the jet scraper. One end of the top of the pneumatic vibrator is connected to an external air pump. A heating element is inserted into the right side of the jet scraper, and the heating element is electrically connected to the control box via a wire.

[0005] Preferably, the back of the jet scraper is inclined, and the end of the inclined back of the jet scraper is serrated to scrape off burrs and fine residues from the mating surface. The pneumatic vibrator is a ball-bearing pneumatic vibrator, and the other end of the top of the pneumatic vibrator is connected to the top of the rectangular blind hole of the jet scraper.

[0006] Preferably, a shielding plate is fixedly connected to the top of the jet scraper, the top of the shielding plate is inclined toward the back of the jet scraper, the shielding plate is located on the back of the pneumatic vibrator, and the shielding plate is used to shield the scraped debris.

[0007] Preferably, the front of the bracket sleeve is fixedly connected to a mating surface flattening mechanism. The mating surface flattening mechanism includes an infrared heating lamp fixedly connected to the front of the bracket sleeve. A pressure roller slide group is slidably connected to the front of the infrared heating lamp via a spring. The pressure roller slide group includes a pressure roller carriage slidably connected to the front of the infrared heating lamp. A solid pressure roller is fixedly connected to the bottom of the pressure roller carriage. A pressure roller auxiliary component is fixedly connected to the front of the pressure roller carriage. The pressure roller auxiliary component includes a diverting nozzle fixedly connected to the back of the pressure roller carriage. The top of the diverting nozzle is connected to an external air pump device. The back of the diverting nozzle is connected to a nozzle facing the top surface of the solid pressure roller.

[0008] Preferably, a chip removal scraper is fixedly connected to the front of the pressure roller carriage, and a scraper is fixedly connected to the back of the chip removal scraper. The scraper is used to scrape off residual debris and residue on the surface of the solid pressure roller. The chip removal scraper has a through hole, and the bottom slope of the inner wall of the chip removal scraper is a surface that slopes downward to the right.

[0009] Preferably, a debris collection mechanism is slidably connected to the left side of the support sleeve. The debris collection mechanism includes a transverse slide connected to the left side of the support sleeve by a spring. A scraping nozzle is fixedly connected to the bottom of the transverse slide. The scraping nozzle includes a nozzle body fixedly connected to the bottom of the transverse slide. An L-shaped scraper is fixedly connected to the right side of the nozzle body. The L-shaped scraper has an L-shaped cross-section and is made of rubber. An inner vibration rod is fixedly connected to the front of the inner wall of the nozzle body. An ultrasonic vibration rod is fixedly connected inside the inner vibration rod. The ultrasonic vibration rod is electrically connected to the control box through a wire. A collection box is fixedly connected to the bottom of the nozzle body. The left side of the collection box is connected to the left side of the scraping nozzle through a flexible tube. The bottom of the collection box is connected to an external air extraction device to absorb impurities and debris.

[0010] Preferably, the top of the collection box is connected to a spraying scraper, which is located in front of the scraping nozzle. The spraying scraper includes a nozzle array fixedly connected to the top of the collection box. A rectangular through hole is opened on the back of the nozzle array, which is connected to an external water pump for discharging cleaning liquid. An edge scraper is fixedly connected to the right side of the nozzle array, and a return guide plate is fixedly connected to the left side of the nozzle array. The bottom of the return guide plate is connected to the top of the collection box.

[0011] Preferably, the number of the spraying scraper is two and they are symmetrically distributed on the left and right sides of the support sleeve.

[0012] This invention provides a blade milling machine for processing wind turbine blades. It has the following advantages: 1. The blade milling equipment for wind turbine blade processing includes a burr removal mechanism that uses a scraper and blower frame in conjunction with a pneumatic vibrator and a shielding plate to remove burrs and small impurities remaining on the milled surface. The removed small impurities are blown off the mating surface to prevent burrs and impurities from affecting the subsequent mold closing process of the blade. At the same time, it prevents burrs and impurities from getting stuck on the tool surface and affecting the subsequent milling process, thereby improving the processing quality of the device.

[0013] 2. This blade milling equipment for wind turbine blade processing, by setting up a mating surface flattening mechanism, uses infrared heating lamps in conjunction with pressure roller slides to preheat and slightly melt the mating surface after deburring. Then, the mating surface is flattened by the pressure rollers, thereby improving the processing quality of the device. At the same time, the heating and slight melting allows some residual milling impurities to be reintegrated into the mating surface, reducing the probability of impurity splashing and further improving the processing quality of the device.

[0014] 3. This blade milling processing equipment for wind turbine blades, by setting up a debris collection mechanism, uses a scraping nozzle in conjunction with a scraping and blowing plate frame and an internal vibration rod to adsorb and recover the impurities and debris blown away by the scraping and blowing plate frame, reducing the contamination of the inner wall surface of the blade and the surface of the joint after milling by impurities, preventing debris and impurities from clogging inside the nozzle and affecting subsequent recovery, improving the cleaning and collection effect of the device on the debris generated during processing, and helping to improve the processing quality of the device.

[0015] 4. The blade milling equipment for wind turbine blade processing, by setting up a debris collection mechanism, uses a scraping nozzle in conjunction with a spraying scraper to spray and absorb the floating debris in the area near the joint surface, and at the same time cleans the inner and outer walls near the joint surface to prevent debris from falling into the joint surface, further improving the processing quality of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the face milling machine and the nail sleeve of the present invention; Figure 3 This is a schematic diagram of the overall structure of the burr removal mechanism of the present invention; Figure 4 This is a schematic diagram showing the positional relationship between the burr removal mechanism and the support sleeve of the present invention; Figure 5 This is a cross-sectional schematic diagram of the internal structure of the jet scraper of the present invention; Figure 6 This is a schematic diagram showing the positional relationship between the burr removal mechanism and the mating surface flattening mechanism of the present invention; Figure 7 This is a cross-sectional view of the internal structure of the pressure roller auxiliary component of the present invention; Figure 8 This is a schematic diagram of the overall structure of the spray coating frame of the present invention; Figure 9 This is a schematic diagram of the overall structure of the scraping nozzle of the present invention; Figure 10 This is a cross-sectional schematic diagram of the overall structure of the spraying scraper frame of the present invention.

[0017] In the diagram: 1. Conveyor frame; 2. Transverse frame; 3. Face milling machine; 4. Support sleeve; 5. Burr removal mechanism; 51. Scraper and blower frame; 511. Fixed carriage; 512. Air jet scraper; 513. Heating tube; 52. Pneumatic vibrator; 53. Shielding plate; 6. Joint surface leveling mechanism; 61. Infrared heating lamp; 62. Pressure roller slide group; 621. Pressure roller carriage; 622. Solid pressure roller; 63. Pressure roller auxiliary assembly; 631. Diverting nozzle; 632. Chip removal scraper; 7. Chip collection mechanism; 71. Transverse carriage; 72. Scraping nozzle; 721. Nozzle body; 722. L-shaped scraper; 723. Internal vibrating rod; 73. Collection box; 74. Spraying scraper frame; 741. Nozzle array; 742. Edge scraper; 743. Return guide plate; 8. Control box. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention. Example

[0020] Please see Figure 1-5 The present invention provides a technical solution: a blade milling processing equipment for wind turbine blade processing, including a conveyor frame 1, a roller rotatably connected to the top of the conveyor frame 1 for assisting in the transmission of blades, a transverse frame 2 slidably connected to the top of the conveyor frame 1 via a linear motor, the transverse frame 2 sliding horizontally on the top of the conveyor frame 1 via a linear motor, a face milling machine 3 slidably connected to the bottom of the transverse frame 2 via a linear motor, the face milling machine 3 sliding vertically via the linear motor of the transverse frame 2, a face milling cutter rotatably connected to the bottom of the face milling machine 3, a support sleeve 4 fixedly connected to the surface of the face milling machine 3, and a laser rangefinder sensor fixedly connected to the front of the support sleeve 4 for detecting the surface state of the mating surface before milling; The mating surface after milling has rough burrs and some debris. Due to the long blade, subsequent cleaning is time-consuming, and the debris will affect the blade mold closing process. Therefore, a burr removal mechanism 5 is fixedly connected to the front of the support sleeve 4. The burr removal mechanism 5 includes a scraping and blowing plate frame 51 fixedly connected to the front of the support sleeve 4. The scraping and blowing plate frame 51 includes: Fixed slide 511 is fixedly connected to the front of bracket sleeve 4; The air jet scraper 512 is fixedly connected to the bottom of the fixed slide 511. A circular blind hole is opened on the back of the air jet scraper 512. A rectangular blind hole communicating with the circular blind hole is opened inside the air jet scraper 512. The back of the air jet scraper 512 is a bevel, and the end of the bevel on the back of the air jet scraper 512 is serrated, which is used to scrape off burrs and fine residues from the mating surface. Heating tube 513 is inserted into the right side of jet scraper 512. Heating tube 513 is electrically connected to control box 8 through wire. A pneumatic vibrator 52 is fixedly connected to the top of the jet scraper 512. The pneumatic vibrator 52 is a ball-type pneumatic vibrator. One end of the top of the pneumatic vibrator 52 is connected to an external air pump, and the other end of the top of the pneumatic vibrator 52 is connected to the top of the rectangular blind hole of the jet scraper 512. A shielding plate 53 is fixedly connected to the top of the jet scraper 512. The top of the shielding plate 53 is inclined towards the back of the jet scraper 512. The shielding plate 53 is located on the back of the pneumatic vibrator 52 and is used to shield the scraped debris. A control box 8 is fixedly connected to the left side of the conveyor frame 1.

[0021] In use, the blade with the mold-closing surface facing up is pushed into the top of the roller of the conveyor frame 1. The linear motor is moved by the control box 8, so that the face milling cutter of the face milling machine 3 contacts the mating surface of the blade. Then, the face milling machine 3 is started by the control box 8, and the blade is pushed or pulled to move backward. The mating surface of the blade and the milling cutter are relatively displaced, and the milling cutter mills the mating surface. During the milling process, the pneumatic vibrator 52 vibrates after gas is introduced by the external air pump. The vibration is transmitted to the air jet scraper 512, which promotes the removal of burrs and residues after milling. The gas enters the rectangular blind hole of the air jet scraper 512, and at the same time carries some of the heat generated by the energized heating tube 513. It is blown out from the circular blind hole of the air jet scraper 512. The high-speed airflow blows towards the milling cutter and the mating surface, blowing the chips out of the mating surface. Example

[0022] Please see Figure 1-7 Based on Embodiment 1, the present invention provides a technical solution: the surface of the mating surface after cleaning is uneven. A mating surface leveling mechanism 6 is fixedly connected to the front of the bracket sleeve 4. The mating surface leveling mechanism 6 includes an infrared heating lamp 61 fixedly connected to the front of the bracket sleeve 4. A pressure roller slide group 62 is slidably connected to the front of the infrared heating lamp 61 through a spring. The pressure roller slide group 62 includes a pressure roller slide frame 621 slidably connected to the front of the infrared heating lamp 61. A solid pressure roller 622 is fixedly connected to the bottom of the pressure roller slide frame 621. A pressure roller auxiliary assembly 63 is fixedly connected to the front of the pressure roller carriage 621. The pressure roller auxiliary assembly 63 includes a diverting nozzle 631 fixedly connected to the back of the pressure roller carriage 621. The top of the diverting nozzle 631 is connected to an external air pump device, and the back of the diverting nozzle 631 is connected to a nozzle facing the top surface of the solid pressure roller 622. A chip removal scraper 632 is fixedly connected to the front of the pressure roller carriage 621, and a scraper is fixedly connected to the back of the chip removal scraper 632. The scraper is used to scrape off residual debris and residue on the surface of the solid pressure roller 622. The chip removal scraper 632 has a through hole, and the slope at the bottom of the inner wall of the chip removal scraper 632 is a surface that slopes downward to the right.

[0023] In use, after the mating surface is milled and cleaned by the face milling machine 3 and the burr removal mechanism 5 in Example 1, the infrared heating lamp 61 irradiates the mating surface. The mating surface heats up under the action of infrared radiation and the surface slightly melts. Then the mating surface is flattened by the solid pressure roller 622, thereby restoring the surface of the mating surface to flatness. During this process, any debris that may be present on the surface of the mating surface will melt together under the irradiation of the infrared heating lamp 61. Some of the debris that is adhered to the surface of the solid pressure roller 622 will be blown into the chip removal scraper tube 632 by the high-speed airflow from the split nozzle 631. The other part of the debris will be scraped off the surface of the solid pressure roller 622 by the scraper of the chip removal scraper tube 632, and then blown into the inside of the chip removal scraper tube 632 by the high-speed airflow from the split nozzle 631. Finally, the debris will be blown out of the chip removal scraper tube 632 by the airflow from the split nozzle 631 and discharged to the part of the device away from the blade. Example

[0024] Please see Figure 1-10 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: some of the small debris that has been cleaned up may float in the air and eventually fall on the mating surface or the inner wall of the blade after it has been shaped, affecting the subsequent mold closing process, increasing cleaning time and reducing processing efficiency. Therefore, a debris collection mechanism 7 is slidably connected to the left side of the support sleeve 4. The debris collection mechanism 7 includes a transverse slide 71 that is slidably connected to the left side of the support sleeve 4 by a spring. A scraping nozzle 72 is fixedly connected to the bottom of the transverse slide 71. The scraping nozzle 72 includes a nozzle body 721 fixedly connected to the bottom of the transverse slide 71. An L-shaped scraper 722 is fixedly connected to the right side of the nozzle body 721. The L-shaped scraper 722 has an L-shaped cross-section and is made of rubber. An inner vibration rod 723 is fixedly connected to the front of the inner wall of the nozzle body 721. An ultrasonic vibration rod is fixedly connected inside the inner vibration rod 723. The ultrasonic vibration rod is electrically connected to the control box 8 through a wire. A collection box 73 is fixedly connected to the bottom of the suction nozzle body 721. The left side of the collection box 73 is connected to the left side of the scraping suction nozzle 72 through a flexible tube. The bottom of the collection box 73 is connected to an external air extraction device to absorb impurities and debris. The top of the collection box 73 is connected to a spray scraper 74, which is located on the front of the scraping nozzle 72. The spray scraper 74 includes a nozzle array 741 fixedly connected to the top of the collection box 73. A rectangular through hole is opened on the back of the nozzle array 741, which is connected to an external water pump for discharging cleaning liquid. An edge scraper 742 is fixedly connected to the right side of the nozzle array 741, and a return guide plate 743 is fixedly connected to the left side of the nozzle array 741. The bottom of the return guide plate 743 is connected to the top of the collection box 73. There are two spray scrapers 74, which are symmetrically distributed on the left and right sides of the bracket sleeve 4.

[0025] When in use, after the device is started, the L-shaped scraper 722 is in close contact with the inner and outer surfaces of the blade and slides relative to the blade wall. The suction device creates a negative pressure inside the collection box 73 and the suction nozzle body 721 by suctioning air, thereby allowing external floating or flying debris to be sucked into the suction nozzle body 721. At the same time, the L-shaped scraper 722 scrapes off the debris attached to the blade wall near the joint surface. During this process, the high-frequency vibration generated by the energized inner vibrating rod 723 is transmitted to the inner wall of the suction nozzle body 721, promoting the adhering debris to detach from the suction nozzle body 721 and enter the collection box 73. At the same time, the nozzle array 741 sprays cleaning fluid onto the blade wall near the mating surface. The cleaning fluid adheres to the debris attached to the blade wall and the debris floating in the nearby air. The mixture of cleaning fluid and debris on the blade wall is scraped off by the edge scraper 742. The mixture of cleaning fluid and debris falls into the collection box 73 through the return guide plate 743, completing the recycling. The cleaning fluid in the recycled mixture can also absorb the debris floating inside the collection box 73.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A blade milling processing device for wind turbine blade processing, comprising a conveyor frame (1), wherein a transverse frame (2) is slidably connected to the top of the conveyor frame (1) via a linear motor, and a face milling machine (3) is slidably connected to the bottom of the transverse frame (2) via a linear motor, and a support sleeve (4) is fixedly connected to the surface of the face milling machine (3), characterized in that: The bracket sleeve (4) is fixedly connected to the front of a burr removal mechanism (5), which includes a scraping and blowing plate frame (51) fixedly connected to the front of the bracket sleeve (4). The cleaning and blowing plate frame (51) includes: Fixed slide (511), the fixed slide (511) is fixedly connected to the front of the bracket sleeve (4); A jet scraper (512) is fixedly connected to the bottom of a fixed slide (511). A circular blind hole is provided on the back of the jet scraper (512). A rectangular blind hole communicating with the circular blind hole of the jet scraper (512) is provided inside the jet scraper (512). A pneumatic vibrator (52) is fixedly connected to the top of the jet scraper (512).

2. The blade milling equipment for processing wind turbine blades according to claim 1, characterized in that: The back of the jet scraper (512) is inclined, and the end of the inclined back of the jet scraper (512) is serrated. The pneumatic vibrator (52) is a ball-type pneumatic vibrator. The other end of the top of the pneumatic vibrator (52) is connected to the top of the rectangular blind hole of the jet scraper (512). A heating tube (513) is inserted into the right side of the jet scraper (512).

3. The blade milling equipment for processing wind turbine blades according to claim 2, characterized in that: A shielding plate (53) is fixedly connected to the top of the jet scraper (512), and the top of the shielding plate (53) is inclined toward the back of the jet scraper (512).

4. The blade milling equipment for processing wind turbine blades according to claim 1, characterized in that: The bracket sleeve (4) is fixedly connected to a mating surface flattening mechanism (6). The mating surface flattening mechanism (6) includes an infrared heating lamp (61) fixedly connected to the front of the bracket sleeve (4). The front of the infrared heating lamp (61) is slidably connected to a pressure roller slide group (62) via a spring. The pressure roller slide group (62) includes a pressure roller carriage (621) slidably connected to the front of the infrared heating lamp (61). A solid pressure roller (622) is fixedly connected to the bottom of the pressure roller carriage (621). A pressure roller auxiliary component (63) is fixedly connected to the front of the pressure roller carriage (621). The pressure roller auxiliary component (63) includes a diverting nozzle (631) fixedly connected to the back of the pressure roller carriage (621). The back of the diverting nozzle (631) is connected to a nozzle, which faces the top surface of the solid pressure roller (622).

5. The blade milling equipment for processing wind turbine blades according to claim 4, characterized in that: The front of the pressure roller slide (621) is fixedly connected to a chip removal scraper (632), which has a through hole and the bottom of the inner wall of the chip removal scraper (632) is a surface that slopes downward to the right.

6. The blade milling equipment for processing wind turbine blades according to claim 1, characterized in that: The left side of the support sleeve (4) is slidably connected to a debris collection mechanism (7). The debris collection mechanism (7) includes a transverse slide (71) slidably connected to the left side of the support sleeve (4) by a spring. The bottom of the transverse slide (71) is fixedly connected to a scraping nozzle (72). The scraping nozzle (72) includes a nozzle body (721) fixedly connected to the bottom of the transverse slide (71). The right side of the nozzle body (721) is fixedly connected to an L-shaped scraper (722). The front of the inner wall of the nozzle body (721) is fixedly connected to an inner vibration rod (723). An ultrasonic vibration rod is fixedly connected inside the inner vibration rod (723). The bottom of the nozzle body (721) is fixedly connected to a collection box (73). The left side of the collection box (73) is connected to the left side of the scraping nozzle (72) through a flexible tube. The bottom of the collection box (73) is connected to an external air extraction device.

7. The blade milling equipment for processing wind turbine blades according to claim 6, characterized in that: The top of the collection box (73) is connected to a spraying scraper (74), which is located on the front of the scraping nozzle (72). The spraying scraper (74) includes a nozzle array (741) fixedly connected to the top of the collection box (73). A rectangular through hole is provided on the back of the nozzle array (741). An edge scraper (742) is fixedly connected to the right side of the nozzle array (741), and a return guide plate (743) is fixedly connected to the left side of the nozzle array (741). The bottom of the return guide plate (743) is connected to the top of the collection box (73).

8. The blade milling equipment for processing wind turbine blades according to claim 7, characterized in that: The number of the spraying scraper (74) is two and they are symmetrically distributed on the left and right sides of the bracket sleeve (4).

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