Unmanned aerial vehicle paddle automatic grinding equipment

Abstract

The invention relates to the field of grinding equipment, and discloses unmanned aerial vehicle paddle automatic grinding equipment which comprises an upper rack, a first horizontal plate is mounted at the top of the upper rack, a telescopic part is mounted on the first horizontal plate, and an upper die clamp is mounted at the bottom of the telescopic part; a second horizontal plate is installed at the bottom of the upper rack, a rotating platform is installed on the second horizontal plate, a lower die clamp is installed on the rotating platform, a longitudinal guide rail is installed on the second horizontal plate, a sliding base is installed on the longitudinal guide rail, a grinding mechanism is installed on the sliding base, and dust collection holes are formed in the upper top face and the peripheral side of the rotating platform. A negative pressure filtering structure is installed at the bottom of the second horizontal plate and communicates with the dust suction holes. According to the paddle polishing device, the upper die clamp and the lower die clamp are driven by the rotating platform to move synchronously, the paddle is driven to perform rotary position adjustment, and in cooperation with position adjustment of the polishing mechanism, the omnibearing side edges of the paddle can be polished, manual position adjustment of the paddle is not needed, and the paddle polishing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding equipment, and particularly relates to an automatic grinding equipment for drone blades. Background Art

[0002] After the blades of a drone are molded, flash burrs will be generated on the outer contour. Workers need to hold sandpaper or a grinding machine and gradually remove the flash along the outer edge of the blade. However, manual edge grinding has low efficiency, difficult quality assurance, and is prone to damaging the connection part between the product body and the flash, leaving tooth marks and notches, which affect the appearance and flight effect of the product.

[0003] In this regard, the prior art uses an electric grinding equipment to automatically grind the blades. First, a pressing mechanism drives the upper and lower jigs to fix the blade. The grinding components on the periphery continuously adjust their positions to grind the edge position on one side of the blade. After grinding is completed, the orientation of the blade in the jig is adjusted so that the other side of the blade faces the grinding components, and then the grinding work on the edge position of the other side is carried out.

[0004] In the prior art, during the blade grinding process, the position of the blade needs to be adjusted multiple times, and the blade grinding efficiency is not high. In addition, to prevent the dust generated during grinding from floating around and getting stuck in the mechanical structure, dust suction holes need to be set on the rotating platform to suck out the dust generated during grinding. However, this dust suction method can only suck part of the newly ground dust and cannot handle the dust falling on the platform, resulting in dust accumulation inside the instrument and affecting the operation of the instrument. Summary of the Invention

[0005] Therefore, the present invention provides an automatic grinding equipment for drone blades, which effectively solves the technical problems in the prior art that the blade grinding efficiency is low, the dust falling on the platform cannot be processed, resulting in dust accumulation inside the instrument and affecting the operation of the instrument.

[0006] To solve the above technical problems, the present invention specifically provides the following technical solution: An automatic grinding equipment for drone blades, including an upper frame, a first horizontal plate is installed on the top of the upper frame, a telescopic member is installed on the first horizontal plate, and an upper mold jig is installed at the bottom of the telescopic member;

[0007] A second horizontal plate is installed at the bottom of the upper frame, a rotating platform is installed on the second horizontal plate, a lower mold jig is installed on the rotating platform at a position directly opposite to the upper mold jig, and a cavity for docking the blade is formed by the upper mold jig and the lower mold jig;

[0008] The telescopic member can be telescoped to drive the upper mold jig to descend, so that the upper mold jig and the lower mold jig clamp and position the blade;

[0009] Among them, a longitudinal guide rail is installed on the second horizontal plate, a sliding seat is installed on the longitudinal guide rail, a grinding mechanism is installed on the sliding seat, the grinding mechanism faces the sides of the upper die fixture and the lower die fixture, and the sliding seat slides on the longitudinal guide rail so that the grinding mechanism abuts against the edge of the blade to grind the edge of the blade;

[0010] The upper die fixture can rotate around the telescopic member, and the rotating platform can rotate itself to synchronously drive the upper die fixture and the lower die fixture to rotate, so that the edges at different positions of the blade are successively facing the grinding mechanism;

[0011] Dust suction holes are provided on the top surface and the periphery of the rotating platform, a negative pressure filtering structure is installed at the bottom of the second horizontal plate, the dust suction holes are communicated with the negative pressure filtering structure, and the negative pressure filtering structure extracts the dust generated during the grinding process of the blade through the dust suction holes.

[0012] Further, the edge part of the blade extends beyond the edges of the upper die fixture and the lower die fixture, and the width of the extended part is equal everywhere;

[0013] The upper and lower end faces of the blade respectively fit with the upper die fixture and the lower die fixture.

[0014] Further, the telescopic member includes a first air cylinder installed on the first horizontal plate and a telescopic rod connected to the output end of the first air cylinder;

[0015] The bottom of the telescopic rod is movably connected to the upper die fixture, and the upper die fixture can rotate around the telescopic rod;

[0016] A connecting plate is rotatably installed at the cylinder port of the first air cylinder, the telescopic rod passes through the connecting plate, sliding columns are installed at both ends of the connecting plate in the vertical direction, and the bottom ends of the sliding columns are connected to the upper die fixture;

[0017] A limiting ring seat is installed at the bottom of the first horizontal plate, the sliding column faces the limiting ring seat and can be embedded in the limiting ring seat.

[0018] Further, the self-rotation central axis of the rotating platform coincides with the telescopic rod.

[0019] Further, a lower frame is installed at the bottom of the upper frame, the bottom end of the rotating platform extends into the lower frame, and a rotation driving component is installed in the lower frame;

[0020] The rotation driving component includes a first driving motor installed in the lower frame and a driving wheel connected to the driving end of the first driving motor;

[0021] A transmission ring is installed around the bottom periphery of the rotating platform, and the transmission ring is connected to the driving wheel through belt transmission;

[0022] The first driving motor drives the driving wheel to rotate, and drives the rotating platform to rotate through the belt.

[0023] Further, the rotating platform includes a top plate, a middle column, and a bottom plate connected in sequence from top to bottom;

[0024] A number of movable plates are rotatably installed on the outer periphery of the top plate. Rotating grooves corresponding to the movable plates are provided on the outer periphery of the top plate. The end of the movable plate is rotatably installed in the rotating groove through a movable shaft, and a torsion spring is arranged between the movable shaft and the rotating groove;

[0025] The dust suction holes are arranged on the top plate and the movable plates.

[0026] Further, a dust suction chamber is movably installed at the bottom of the bottom plate, and the dust suction chamber does not rotate with the rotating platform;

[0027] A first dust suction pipe is installed at the bottom of the top plate, and a second dust suction pipe is installed on the inner side of the movable plate. The first dust suction pipe and the second dust suction pipe are both far from the middle column, and the first dust suction pipe and the second dust suction pipe are in one-to-one correspondence and communication with the dust suction holes;

[0028] The ends of the first dust suction pipe and the second dust suction pipe penetrate through the bottom plate and are communicated to the dust suction chamber.

[0029] Further, an installation ring seat is arranged around the movable plate, and the end of the movable plate abuts against the inner side of the installation ring seat;

[0030] A driving cavity is arranged in the middle column and the bottom plate. A cable is connected to the inner side of each movable plate, and the cable penetrates through the middle column and extends into the driving cavity;

[0031] A pulling cylinder is arranged in the driving cavity. The driving end of the pulling cylinder is connected to the end of the cable. By driving the pulling cylinder, the cable is driven to move, so as to pull the movable plate to rotate and adjust the dust suction direction of the dust suction hole on it.

[0032] Further, a first hydraulic cylinder is installed at the end of the sliding seat, and the driving end of the first hydraulic cylinder is connected to the sliding seat to drive the sliding seat to move on the longitudinal sliding rail;

[0033] A vertical sliding plate is slidably installed on the sliding seat. A second hydraulic cylinder is installed at the end of the vertical sliding plate, and the driving end of the second hydraulic cylinder is connected to the vertical sliding plate to drive the vertical sliding plate to move vertically on the sliding seat;

[0034] A horizontal plate is installed on the vertical sliding plate, and the grinding structure includes a grinding wheel installed on the horizontal plate;

[0035] The grinding wheel is rotatably installed on the horizontal plate through a rotating shaft. A second driving motor is installed on the horizontal plate. The driving end of the first driving motor is in transmission connection with the rotating shaft through a transmission belt. The second driving motor drives and drives the rotating shaft and the grinding wheel to rotate through the transmission belt.

[0036] Further, a second air cylinder is arranged on the second horizontal plate. The output end of the second air cylinder is connected with a lifting platform, and a U-shaped clamp is installed on the lifting platform;

[0037] The inner width of the U-shaped clamp is the same as the width of the blade at the position facing the U-shaped clamp.

[0038] The present invention has the following beneficial effects compared with the prior art:

[0039] In the present invention, the rotary platform drives the upper die fixture and the lower die fixture to move synchronously, drives the blade to rotate and adjust the position, and cooperates with the position adjustment of the grinding mechanism, so as to realize the grinding of the entire circumferential side edge of the blade, without manually adjusting the position of the blade, and improves the grinding efficiency of the blade;

[0040] Further, dust suction holes are arranged on the top surface and the periphery of the rotary platform, which increases the dust suction range, and the dust suction holes rotate with the rotary platform. During the continuous movement process, the position opposite to the dust suction holes is continuously adjusted, so as to perform three-dimensional dust suction on the dust in the falling state, improve the dust suction effect, and avoid dust accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0042] Figure 1 It is a schematic structural diagram of an automatic grinding device for an unmanned aerial vehicle blade provided by an embodiment of the present invention;

[0043] Figure 2 It is a schematic structural diagram of another perspective of an automatic grinding device for an unmanned aerial vehicle blade provided by an embodiment of the present invention;

[0044] Figure 3 It is a schematic structural diagram of another perspective of an automatic grinding device for an unmanned aerial vehicle blade provided by an embodiment of the present invention;

[0045] Figure 4 A three-dimensional sectional view of a certain section of an automatic grinding device for UAV blades provided by an embodiment of the present invention;

[0046] Figure 5 For Figure 4 A structural schematic diagram of another perspective;

[0047] Figure 6 For Figure 4 An enlarged structural schematic diagram of A in

[0048] Figure 7 For Figure 5 An enlarged structural schematic diagram of B in

[0049] Figure 8 A structural schematic diagram of the grinding mechanism in an embodiment of the present invention;

[0050] Figure 9 A structural schematic diagram of the rotating platform in an embodiment of the present invention adopting the second embodiment;

[0051] Figure 10 For Figure 9 A top view structural schematic diagram of

[0052] Figure 11 For Figure 10 A three-dimensional sectional view in the A-A direction in

[0053] The reference numerals in the figure are respectively represented as follows:

[0054] 1. Upper frame; 2. Lower frame; 3. First horizontal plate; 4. Second horizontal plate; 5. Telescopic member; 6. Upper die fixture; 7. Rotating platform; 8. Lower die fixture; 9. Longitudinal guide rail; 10. Slide seat; 11. Grinding mechanism; 12. Dust suction hole; 13. Rotating drive assembly; 14. Dust suction chamber; 15. First dust suction pipe; 16. Second dust suction pipe; 17. Installation ring seat; 18. Drive cavity; 19. Cable; 21. Vertical sliding plate; 23. Cross plate; 24. Second cylinder; 25. Lifting table; 26. U-shaped clamp;

[0055] 51. First cylinder; 52. Expansion rod; 53. Connecting plate; 54. Slide column; 55. Limit ring seat;

[0056] 71. Top plate; 72. Middle column; 73. Chassis; 74. Movable plate; 75. Rotating groove;

[0057] 111. Grinding wheel; 112. Rotating shaft; 113. Second driving motor; 114. Transmission belt;

[0058] 131. First driving motor; 132. Driving wheel; 133. Belt; 134. Transmission ring. Detailed implementation manners

[0059] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0060] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the present invention provides an automatic grinding device for drone blades, which adopts a frame structure and is divided into an upper frame 1 and a lower frame 2. The upper frame 1 is installed on the lower frame 2.

[0061] A first horizontal plate 3 is installed on the top of the upper frame 1. A telescopic member 5 is installed on the first horizontal plate 3, and an upper mold fixture 6 is installed at the bottom of the telescopic member 5;

[0062] A second horizontal plate 4 is installed at the bottom of the upper frame 1. A number of columns are installed between the first horizontal plate 3 and the second horizontal plate 4. A rotary platform 7 is installed on the second horizontal plate 4. A lower mold fixture 8 is installed on the rotary platform 7 at a position directly opposite to the upper mold fixture 6. The upper mold fixture 6 and the lower mold fixture 8 form a cavity for docking the blades. The upper mold fixture 6 and the lower mold fixture 8 can be clamped to fix the blades, so that the blades are in a relatively static state relative to the upper mold fixture 6 and the lower mold fixture 8.

[0063] The telescopic member 5 can be telescoped to drive the upper mold fixture 6 to descend, so that the upper mold fixture 6 and the lower mold fixture 8 clamp and position the blades;

[0064] Among them, a longitudinal guide rail 9 is installed on the second horizontal plate 4. A sliding seat 10 is installed on the longitudinal guide rail 9. A grinding mechanism 11 is installed on the sliding seat 10. The grinding mechanism 11 is directly opposite to the side surfaces of the upper mold fixture 6 and the lower mold fixture 8. The sliding seat 10 slides on the longitudinal guide rail 9, so that the grinding mechanism 11 abuts against the edge of the blade to grind the edge of the blade;

[0065] The upper mold fixture 6 can rotate around the telescopic member 5, and the rotary platform 7 can rotate itself to synchronously drive the upper mold fixture 6 and the lower mold fixture 8 to rotate, so that the edges at different positions of the blade are sequentially directly opposite to the grinding mechanism 11;

[0066] Dust suction holes 12 are provided on the top surface and the periphery of the rotary platform 7. A negative pressure filtering structure is installed at the bottom of the second horizontal plate 4. The dust suction holes 12 are communicated with the negative pressure filtering structure, and the negative pressure filtering structure extracts the dust generated during the grinding process of the blades through the dust suction holes 12.

[0067] In the present invention, the rotary platform 7 drives the upper die fixture 6 and the lower die fixture 8 to move synchronously, driving the paddle to rotate and adjust its position. In cooperation with the adjustment of the grinding mechanism 11, it can achieve the grinding of the entire circumferential side edges of the paddle, eliminating the need for manual adjustment of the paddle position, and improving the grinding efficiency of the paddle.

[0068] In addition, dust suction holes 12 are provided on the top surface and the circumferential side of the rotary platform 7, increasing the dust suction range. Moreover, the dust suction holes 12 rotate with the rotary platform 7, continuously adjusting the position directly opposite the dust suction holes 12 during the movement, achieving a three-dimensional all-round dust suction for the falling dust, improving the dust suction effect, and preventing dust accumulation.

[0069] The lower frame 2 is formed by splicing and welding welded galvanized square tubes. The second horizontal plate 4 is installed between the upper frame 1 and the lower frame 2. The second horizontal plate 4 can be made of 45 carbon steel. The surrounding cabinets of the lower frame 2 can be made of Q235 cold-rolled plates with a thickness of 1 - 2 mm. One or more cabinet doors can be designed as needed. When the cabinet doors are opened, they can be used as an electrical cabinet and a storage cabinet. The electrical cabinet can house a complete set of electrical and pneumatic components such as the CK control panel and the controller.

[0070] In addition, supporting devices such as the servo of the numerical control system, the motor drive, the triple unit for driving and controlling the cylinder of the numerical control system, the air pipe, and the cooling fan can be placed at appropriate positions inside the lower frame 2.

[0071] Four M16 adjusting feet are installed at the bottom of the lower frame 2 to adjust the horizontal plane correction of the tooling.

[0072] The outer frame of the upper frame 1 is made of 45 aluminum profiles after anodizing, and is spliced and then fixed by welding or bolt connection. The upper left corner in the front of the upper frame 1 is hollowed out to set a square frame, on which a teach pendant and a teach screen can be installed as a teach interface for adjusting the working parameters of the entire grinding operation.

[0073] Sliding windows can be installed on the surrounding cabinets of the upper frame 1 for observing the internal working state of the tooling and isolating dust.

[0074] The upper die fixture 6 and the lower die fixture 8 are made of 6063 aluminum alloy, and the surfaces are treated by hard anodizing. The cavities of the upper and lower die fixtures 8 and the surface of the paddle are in a profiling structure.

[0075] To avoid collisions between the grinding mechanism 11 and the upper die fixture 6 and the lower die fixture 8, it should be ensured that: the edge part of the paddle extends beyond the edge positions of the upper die fixture 6 and the lower die fixture 8, and the width of the extended part is equal everywhere. Generally, the edge part of the paddle extends beyond the edge positions of the upper die fixture 6 and the lower die fixture 8 by about 2 mm.

[0076] The upper and lower different end faces of the paddle fit with the upper die fixture 6 and the lower die fixture 8 respectively to ensure the fixing effect of the upper die fixture 6 and the lower die fixture 8 on the paddle.

[0077] In the present invention, the telescopic member 5 is used to drive the upper mold fixture 6 to rise and fall, so as to clamp and fix the blade. Figure 4 and Figure 6 As shown, the telescopic member 5 includes a first cylinder 51 installed on the first horizontal plate 3, a telescopic rod 52 connected to the output end of the first cylinder 51, and the bottom of the telescopic rod 52 is movably connected to the upper mold fixture 6, and the upper mold fixture 6 can rotate around the telescopic rod 52;

[0078] A connecting plate 53 is rotatably mounted on the cylinder mouth of the first cylinder 51, and a telescopic rod 52 passes through the connecting plate 53. Sliding columns 54 are slidably mounted on both ends of the connecting plate 53 in a vertical direction, and the bottom end of the sliding column 54 is connected to the upper mold fixture 6;

[0079] A limiting ring seat 55 is installed at the bottom of the first horizontal plate 3 , and the sliding column 54 is directly opposite to the limiting ring seat 55 and can be embedded in the limiting ring seat 55 .

[0080] Holes are drilled at appropriate positions on the first horizontal plate 3 to install two first cylinders 51 of 400-800 kg.

[0081] In the above embodiment, the limiting ring seat 55 serves to limit the sliding column 54 in the vertical direction. In the initial state, the upper mold clamp 6 is far away from the lower mold clamp 8, and the sliding column 54 is placed in the limiting ring seat 55 and cannot rotate around the telescopic rod 52. After the first cylinder 51 drives the upper mold clamp 6 to clamp the paddles on the lower mold clamp 8, the sliding column 54 completely detaches from the limiting ring seat 55. At this time, the sliding column 54, the upper mold clamp 6, the paddles, and the lower mold clamp 8 are in a relatively static state, and the above relative static state is also maintained during the subsequent rotation process.

[0082] The rotation center axis of the rotating platform 7 coincides with the telescopic rod 52. When the rotating platform 7 rotates, the upper mold clamp 6, the paddle blades, the lower mold clamp 8, the sliding column 54, and the connecting plate 53 also rotate synchronously with the telescopic rod 52 as the center axis. During this process, the telescopic rod 52 does not rotate, and the movable connection between the telescopic rod 52 and the rotating platform 7 moves relative to each other, and the connecting plate 53 also moves relative to the cylinder mouth of the first cylinder 51.

[0083] The bottom end of the rotating platform 7 extends into the lower frame 2, and a rotating drive assembly 13 is installed in the lower frame 2. The rotating drive assembly 13 is used to drive the rotating platform 7 to rotate. The rotating platform 7 adopts the following preferred embodiments, such as Figure 5 and Figure 7 As shown, the rotary drive assembly 13 includes a first drive motor 131 installed in the lower frame 2 and a drive wheel 132 connected to the drive end of the first drive motor 131;

[0084] A transmission ring 134 is installed on the outer periphery of the bottom of the rotating platform 7, and the transmission ring 134 is connected to the driving wheel 132 through a belt 133;

[0085] The first drive motor 131 drives the drive wheel 132 to rotate, and drives the transmission ring 134 to rotate through the belt 133, and the rotating platform 7 rotates synchronously therewith.

[0086] Regarding the problem that the dust ground by the blade may not be completely sucked out and remains in the upper frame 1, the present invention adopts the method of arranging the dust suction holes 12 three-dimensionally in all directions, and the corresponding rotating platform 7 specifically adopts the following two embodiments:

[0087] The first embodiment:

[0088] The rotating platform 7 is an integral structure, and dust suction holes 12 are formed on both its top surface and side surface. The negative pressure filtering structure sucks dust from the top above the dust suction hole 12 and the side directly opposite to the dust suction hole 12 respectively through the dust suction hole 12, expanding the dust suction range.

[0089] The second embodiment:

[0090] The rotating platform 7 is a combined structure. Specifically, as Figure 9 、 Figure 10 and Figure 11 shown, the rotating platform 7 includes a top plate 71, a middle column 72, and a bottom plate 73 that are connected in sequence from top to bottom. The outer diameter of the middle column 72 is smaller than the outer diameters of the top plate 71 and the bottom plate 73.

[0091] A plurality of movable plates 74 are rotatably installed on the outer periphery of the top plate 71. Rotating grooves 75 corresponding to the movable plates 74 are formed on the outer periphery of the top plate 71. The ends of the movable plates 74 are rotatably installed in the rotating grooves 75 through movable shafts. A torsion spring is arranged between the movable shafts and the rotating grooves 75. The dust suction holes 12 are arranged on the top plate 71 and the movable plates 74.

[0092] The movable plate 74 itself is a movable plate structure. During the rotation of the movable plate 74 around the movable shaft, the included angle between the movable plate 74 and the top plate 71 can be adjusted, so as to adjust the facing direction of the dust suction hole 12.

[0093] To further realize the dust suction process, a dust suction chamber 14 is movably installed at the bottom of the bottom plate 73, and the dust suction chamber 14 does not rotate with the rotating platform 7;

[0094] A first dust suction pipe 15 is installed at the bottom of the top plate 71, and a second dust suction pipe 16 is installed inside the movable plate 74. Both the first dust suction pipe 15 and the second dust suction pipe 16 are far from the middle column 72, and the first dust suction pipe 15 and the second dust suction pipe 16 are in one-to-one correspondence and communication with the dust suction hole 12;

[0095] The ends of the first dust suction pipe 15 and the second dust suction pipe 16 penetrate through the bottom plate 73 and are connected to the dust suction chamber 14.

[0096] During the rotation of the rotating platform 7, the dust suction chamber 14 remains stationary.

[0097] The dust in the direction directly opposite to the dust suction holes 12 can enter the dust suction chamber 14 through the first dust suction pipe 15 and the second dust suction pipe 16, and under the negative pressure drive of the negative pressure filtering structure, the dust in the dust suction chamber 14 is further pumped into the negative pressure filtering structure.

[0098] The negative pressure filtering structure can be structures such as a negative pressure fan and a filter screen.

[0099] To adjust the inclination angle of the movable plate 74, the present invention makes the following design. An installation ring seat 17 is provided around the movable plate 74, and the end of the movable plate 74 abuts against the inner side of the installation ring seat 17;

[0100] A drive chamber 18 is provided in the middle column 72 and the chassis 73. A cable 19 is connected to the inner side of each movable plate 74, and the cable 19 passes through the middle column 72 and extends into the drive chamber 18;

[0101] A pulling cylinder is provided in the drive chamber 18. The drive end of the pulling cylinder is connected to the end of the cable 19. By driving the pulling cylinder to drive the cable 19 to move, the movable plate 74 is pulled to rotate and adjust the dust suction direction of the dust suction holes 12 thereon.

[0102] The installation ring seat 17 limits the initial state of the movable plate 74. Assuming that the inner wall of the installation ring seat 17 is just opposite to and fits the movable plate 74 in the vertical state, then the initial state of the movable plate 74 is the vertical state. During the adjustment process, the movable plate 74 is pulled towards the middle column 72, so that the direction directly opposite to the dust suction holes 12 gradually approaches the plate surface of the second horizontal plate 4;

[0103] Assuming that the installation ring seat 17 is far from the movable plate 74, then the initial state of the movable plate 74 is the inclined state. At this time, the direction directly opposite to the dust suction holes 12 is inclined upwards, and the dust in this direction can be absorbed. During the adjustment process, the movable plate 74 is pulled towards the middle column 72, so that the direction directly opposite to the dust suction holes 12 gradually tends to be horizontal and approaches the plate surface of the second horizontal plate 4.

[0104] Therefore, the farther the installation ring seat 17 is from the movable plate 74, the larger the adjustable dust suction range of the dust suction holes 12 on the movable plate 74. However, it should be noted that it is necessary to ensure that the movable plate 74 abuts against the inner wall of the installation ring seat 17 under the action of the torsion spring in the initial state. In addition to limiting the movable plate 74, the installation ring seat 17 can also reduce the entry of dust into the rotating platform 7.

[0105] During the movement of the movable plate 74, the second dust suction pipe 16 will move accordingly. The second dust suction pipe 16 should be a flexible pipe. During the process of the second dust suction pipe 16 moving inward following the movable plate 74, the first dust suction pipe 15 may obstruct the movement of the second dust suction pipe 16. In this regard, the first dust suction pipe 15 can be arranged at a position far from the movement path of the second dust suction pipe 16.

[0106] Since the outer edge of the blade is irregular, a first hydraulic cylinder is installed at the end of the sliding seat 10. The driving end of the first hydraulic cylinder is connected to the sliding seat 10 to drive the sliding seat 10 to move on the longitudinal sliding rail.

[0107] A vertical sliding plate 21 is slidably installed on the sliding seat 10. A second hydraulic cylinder is installed at the end of the vertical sliding plate 21. The driving end of the second hydraulic cylinder is connected to the vertical sliding plate 21 to drive the vertical sliding plate 21 to move vertically on the sliding seat 10.

[0108] The operation of the first hydraulic cylinder and the second hydraulic cylinder can drive the grinding structure to adjust its position in the horizontal and vertical directions. The position adjustment in these two directions can ensure that the grinding structure fully fits the outer edge of the blade for grinding work.

[0109] As Figure 8 shown, a cross plate 23 is installed on the vertical sliding plate 21. The grinding structure includes a grinding wheel 111 installed on the cross plate 23.

[0110] The grinding wheel 111 is rotatably installed on the cross plate 23 through a rotating shaft 112. A second driving motor 113 is installed on the cross plate 23. The driving end of the first driving motor 131 is in transmission connection with the rotating shaft 112 through a transmission belt 114. The second driving motor 113 drives and drives the rotating shaft 112 and the grinding wheel 111 to rotate through the transmission belt 114.

[0111] Among them, the grinding wheel 111 uses a diamond grinding wheel. As the main grinding loss material, the higher the grit size of the diamond grinding wheel, the lower the surface roughness.

[0112] Before the upper die fixture 6, the lower die fixture 8, and the blade start to rotate, it is necessary to align the upper die fixture 6, the lower die fixture 8, and the blade. To achieve alignment, the present invention adopts the following preferred embodiments. As Figure 7 shown, a second air cylinder 24 is arranged on the second horizontal plate 4. The output end of the second air cylinder 24 is connected to a lifting platform 25. A U-shaped clamp 26 is installed on the lifting platform 25.

[0113] The inner width of the U-shaped clamp 26 is the same as the width of the blade at the position facing the U-shaped clamp 26.

[0114] Driven by the second cylinder 24, the U-shaped clamp 26 is lifted to a position outside the lower die fixture 8. The U-shaped clamp 26 positions the blade, and adjusts the positions of the blade on the upper die fixture 6 and the lower die fixture 8 to ensure the subsequent alignment and clamping effect of the upper die fixture 6 and the lower die fixture 8 on the blade.

[0115] In summary, the main implementation process of the present invention is as follows:

[0116] Driven by the second cylinder 24, the U-shaped clamp 26 is lifted to a position outside the lower die fixture 8. The blade is placed in alignment on the lower die fixture 8, and the U-shaped clamp 26 positions the blade;

[0117] The first cylinder 51 drives the upper die fixture 6 to move downward and clamp the blade on the lower die fixture 8, achieving complete positioning of the blade;

[0118] The first drive motor 131 drives the drive wheel 132 to rotate, and drives the transmission ring 134 to rotate through the belt 133. The rotating platform 7 rotates synchronously, so that the edges at different positions of the blade are successively aligned with the grinding wheel 111;

[0119] At the same time, for different edges of the blade, the positions of the grinding wheel 111 relative to the blade edges are adjusted by using the first hydraulic cylinder and the second hydraulic cylinder to achieve fine grinding of different edges of the blade;

[0120] Synchronously, the negative pressure filtration structure sucks out the dust generated during the grinding process of the blade through the dust suction holes 12 and the dust suction chamber 14;

[0121] If there is dust falling on the second horizontal plate 4 or other positions, the pulling cylinder is periodically controlled to drive the cable 19 to move, so as to pull the movable plate 74 to rotate and continuously adjust the dust suction direction of the dust suction holes 12 thereon, thereby realizing more omni-directional dust suction of the dust suction holes 12 during the grinding process of the blade.

[0122] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. An automatic grinding device for drone blades, characterized in that: It comprises an upper frame (1), a first horizontal plate (3) is mounted on the top of the upper frame (1), a telescopic member (5) is mounted on the first horizontal plate (3), and an upper mold fixture (6) is mounted on the bottom of the telescopic member (5); A second horizontal plate (4) is installed at the bottom of the upper frame (1), a rotating platform (7) is installed on the second horizontal plate (4), a lower die fixture (8) is installed on the rotating platform (7) at a position directly opposite to the upper die fixture (6), and a cavity for docking the paddle is formed between the upper die fixture (6) and the lower die fixture (8); The telescopic member (5) can be telescoped to drive the upper die fixture (6) to descend, so that the upper die fixture (6) and the lower die fixture (8) clamp and position the blade; Wherein, a longitudinal guide rail (9) is installed on the second horizontal plate (4), a slide seat (10) is installed on the longitudinal guide rail (9), a grinding mechanism (11) is installed on the slide seat (10), the grinding mechanism (11) is directly opposite to the side surfaces of the upper mold fixture (6) and the lower mold fixture (8), the slide seat (10) slides on the longitudinal guide rail (9), so that the grinding mechanism (11) abuts against the edge of the blade to grind the edge of the blade; The upper die fixture (6) can rotate around the telescopic member (5), and the rotating platform (7) can rotate on its own, so as to synchronously drive the upper die fixture (6) and the lower die fixture (8) to rotate, so that the edges of the blades at different positions are aligned with the grinding mechanism (11) in sequence; The rotating platform (7) is provided with dust suction holes (12) on the top surface and the peripheral side, and a negative pressure filtering structure is installed at the bottom of the second horizontal plate (4). The dust suction holes (12) are connected to the negative pressure filtering structure, and the negative pressure filtering structure extracts dust generated during the blade grinding process through the dust suction holes (12).

2. The automatic grinding equipment for UAV blades according to claim 1 is characterized in that: The edge of the blade exceeds the edge of the upper mold fixture (6) and the lower mold fixture (8), and the width of the exceeding portion is equal everywhere; The upper and lower end surfaces of the blade are respectively matched with the upper mold fixture (6) and the lower mold fixture (8).

3. The automatic grinding equipment for UAV blades according to claim 1 is characterized in that: The telescopic member (5) comprises a first cylinder (51) mounted on the first horizontal plate (3) and a telescopic rod (52) connected to the output end of the first cylinder (51); The bottom of the telescopic rod (52) is movably connected to the upper mold fixture (6), and the upper mold fixture (6) can rotate around the telescopic rod (52); A connecting plate (53) is rotatably mounted on the cylinder mouth of the first cylinder (51), the telescopic rod (52) passes through the connecting plate (53), and sliding columns (54) are slidably mounted on both ends of the connecting plate (53) in a vertical direction, and the bottom end of the sliding column (54) is connected to the upper mold fixture (6); A limiting ring seat (55) is installed at the bottom of the first horizontal plate (3), and the sliding column (54) is directly opposite to the limiting ring seat (55) and can be embedded in the limiting ring seat (55).

4. The automatic grinding equipment for UAV blades according to claim 3 is characterized in that: The rotation center axis of the rotating platform (7) coincides with the telescopic rod (52).

5. The automatic grinding equipment for UAV blades according to claim 1 is characterized in that: A lower frame (2) is installed at the bottom of the upper frame (1), the bottom end of the rotating platform (7) extends into the lower frame (2), and a rotating drive assembly (13) is installed in the lower frame (2); The rotary drive assembly (13) comprises a first drive motor (131) installed in the lower frame (2) and a drive wheel (132) connected to a drive end of the first drive motor (131); A transmission ring (134) is installed on the periphery of the bottom of the rotating platform (7), and the transmission ring (134) is connected to the driving wheel (132) through a belt (133); The first driving motor (131) drives the driving wheel (132) to rotate, and drives the rotating platform (7) to rotate through the belt (133).

6. The automatic grinding equipment for UAV blades according to claim 1 is characterized in that: The rotating platform (7) comprises a top plate (71), a middle column (72), and a bottom plate (73) which are connected in sequence from top to bottom; A plurality of movable plates (74) are rotatably mounted on the outer periphery of the top plate (71); a rotation groove (75) corresponding to the movable plates (74) is opened on the outer periphery of the top plate (71); the ends of the movable plates (74) are rotatably mounted in the rotation groove (75) via a movable shaft; a torsion spring is arranged between the movable shaft and the rotation groove (75); The dust suction hole (12) is arranged on the top plate (71) and the movable plate (74).

7. The automatic grinding equipment for UAV blades according to claim 6 is characterized in that: A dust collection cabin (14) is movably mounted at the bottom of the chassis (73), and the dust collection cabin (14) does not rotate along with the rotating platform (7); A first dust suction pipe (15) is installed at the bottom of the top plate (71), and a second dust suction pipe (16) is installed on the inner side of the movable plate (74). The first dust suction pipe (15) and the second dust suction pipe (16) are both far away from the middle column (72), and the first dust suction pipe (15) and the second dust suction pipe (16) are connected to the dust suction holes (12) in a one-to-one correspondence. The ends of the first dust suction pipe (15) and the second dust suction pipe (16) pass through the chassis (73) and are connected to the dust suction cabin (14).

8. The automatic grinding equipment for UAV blades according to claim 7 is characterized in that: A mounting ring seat (17) is disposed on the periphery of the movable plate (74), and the plate end of the movable plate (74) abuts against the inner side of the mounting ring seat (17); A driving cavity (18) is provided in the middle column (72) and the chassis (73), and a cable (19) is connected to the inner side of each movable plate (74), and the cable (19) passes through the middle column (72) and extends into the driving cavity (18); A tension cylinder is arranged in the driving chamber (18), and the driving end of the tension cylinder is connected to the end of the cable (19). The cable (19) is driven to move by driving the tension cylinder, so as to pull the movable plate (74) to rotate and adjust the dust suction direction of the dust suction hole (12) thereon.

9. The automatic grinding equipment for UAV blades according to claim 1, characterized in that: A first hydraulic cylinder is installed at the end of the slide seat (10), and a driving end of the first hydraulic cylinder is connected to the slide seat (10) to drive the slide seat (10) to move on the longitudinal slide rail; A vertical slide plate (21) is slidably mounted on the slide seat (10), a second hydraulic cylinder (22) is mounted on the end of the vertical slide plate (21), and a driving end of the second hydraulic cylinder (22) is connected to the vertical slide plate (21) to drive the vertical slide plate (21) to move in a vertical direction on the slide seat (10); A transverse plate (23) is mounted on the vertical slide plate (21), and the grinding structure comprises a grinding wheel (111) mounted on the transverse plate (23); The grinding wheel (111) is rotatably mounted on the transverse plate (23) via a rotating shaft (112); a second driving motor (113) is mounted on the transverse plate (23); a driving end of the first driving motor (131) is transmission-connected to the rotating shaft (112) via a transmission belt (114); the second driving motor (113) drives and drives the rotating shaft (112) and the grinding wheel (111) to rotate via the transmission belt (114).

10. The automatic grinding equipment for drone blades according to claim 1, characterized in that: A second cylinder (24) is disposed on the second horizontal plate (4); an output end of the second cylinder (24) is connected to a lifting platform (25); and a U-shaped clamp (26) is installed on the lifting platform (25); The inner width of the U-shaped clip (26) is consistent with the width of the blade at the position opposite to the U-shaped clip (26).

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