A precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles

Abstract

The utility model discloses a kind of precision spraying devices for unmanned aerial vehicle parts surface uniform coating, it is related to unmanned aerial vehicle parts processing technical field, to solve the technical problem that current unmanned aerial vehicle paddle spraying equipment is cumbersome, easy to have spraying blind area, including spray tank, the partition is arranged in the middle of spray tank interior, the hanging mechanism is arranged in the middle of partition upper surface, the transmission mechanism is arranged in the middle of partition lower surface, the moving mechanism is arranged in the front surface of partition, and the spraying mechanism is arranged on the moving mechanism. The utility model is by the meshing transmission of straight gear and rack, the one-way limiting structure of ratchet pawl and the design of vertical flat nozzle, when moving mechanism drives nozzle transverse movement to spray, the transmission mechanism can be synchronously driven to realize the automatic turning of paddle, to effectively improve the efficiency and uniformity of spraying operation, reduce cumbersome steps in operation process and the generation of spraying blind area.

Description

Technical Field

[0001] This utility model relates to the field of drone component processing technology, and more specifically, to a precision spraying device for uniformly coating the surface of drone components. Background Technology

[0002] Unmanned aerial vehicles (UAVs), composed of a fuselage, wings, power system, and various components, are widely used in aerial photography, surveying, logistics, and other fields. Among these, the propeller blades, as a key component of the UAV's power system, directly affect flight efficiency and stability due to their surface properties. To enhance the corrosion resistance, wear resistance, and aerodynamic performance of the propeller blades, a coating process is typically performed on their surface. This involves applying a special material to form a protective layer, thereby improving the blades' lifespan and operational reliability.

[0003] Currently, in drone propeller coating operations, some equipment struggles to balance coating efficiency and uniformity. Traditional coating devices often rely on manual or simple mechanical methods to fix the propellers, requiring manual adjustment of the blade angle to complete multi-sided coating. This process is cumbersome and prone to creating blind spots. Therefore, we propose a precision coating device for uniformly coating the surfaces of drone components. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a precision spraying device for uniform coating of the surface of drone parts, so as to solve the technical problems of cumbersome operation and easy spraying blind spots in the existing drone propeller spraying equipment.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a precision spraying device for uniformly coating the surface of unmanned aerial vehicle (UAV) parts, comprising a spray box, a partition arranged in the middle inside the spray box, a hanging mechanism arranged in the middle of the upper surface of the partition, a transmission mechanism arranged in the middle of the lower surface of the partition, a moving mechanism arranged in the front surface of the partition, and a spraying mechanism arranged on the moving mechanism.

[0006] The transmission mechanism includes a shaft A, the upper end of which is rotatably connected to the lower surface of the partition plate. A spur gear is arranged at the lower end of the shaft A, and a rack meshes on the surface of the spur gear. A ratchet is arranged in the middle of the shaft A, and a pawl is arranged on the ratchet.

[0007] Preferably, the upper surface of the partition is inclined, a gathering hopper is arranged at one end of the partition, a barrel is arranged below the gathering hopper, and the barrel is placed inside the lower end of the spray box.

[0008] Preferably, the hanging mechanism includes a turntable arranged on the upper surface of the partition plate, a baffle is arranged on the upper surface of the turntable, a vertical rod is arranged in the middle of the upper end of the baffle, a paddle is fixed on the vertical rod by bolts, and a plurality of limiting holes are arranged at intervals along the circumferential direction on the lower side of the baffle plate, and limiting teeth are arranged in the plurality of limiting holes, and the limiting teeth are fixed to the upper surface of the partition plate by ring blocks.

[0009] Preferably, the moving mechanism is a linear moving structure with a lead screw, the upper surface of the moving end of the moving mechanism is connected to the spraying mechanism, and the lower surface of the moving end of the moving mechanism is connected to the transmission mechanism.

[0010] Preferably, the spraying mechanism includes a diverter pipe arranged on the upper surface of the moving end of the moving mechanism, and a plurality of spray nozzles are arranged at intervals from top to bottom on the rear surface of the diverter pipe. The plurality of spray nozzles are all vertically flat in shape, and a pipe is arranged on the front surface of the diverter pipe.

[0011] Preferably, the transmission mechanism further includes a connecting rod arranged on the lower surface of the moving end of the moving mechanism, and a rack is arranged at one end of the connecting rod.

[0012] Preferably, the pawl is rotatably mounted inside pulley A, and the side of the pawl is connected to the inside of pulley A by a spring. Pulley A is arranged on shaft A, and pulley A is connected to pulley B by a transmission belt. Pulley B is arranged on the lower surface of the turntable by shaft B.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a spur gear and rack structure. When the moving end of the moving mechanism drives the nozzle to move laterally to complete the single-sided spraying of the blade, the rack moves synchronously with the moving end and meshes with the spur gear. The rotation of the spur gear is transmitted to pulley A through shaft A, and then to pulley B through the transmission belt, causing the turntable to rotate and the upright to flip the blade. This design uses a single power source to synchronously drive the spraying and flipping actions, which can reduce redundant structures in the equipment and ensure that both sides of the blade can achieve a uniform spraying effect while reducing costs.

[0015] This invention utilizes a ratchet and pawl structure. When the moving end of the moving mechanism drives the rack to the left, the spur gear drives the ratchet to rotate clockwise. At this time, the pawl, under the action of a spring, engages the teeth on the ratchet, causing pulley A to drive the turntable to rotate via the transmission belt, thus achieving blade flipping. When the moving end drives the rack to the right to reset, the spur gear drives the ratchet to rotate counterclockwise. At this time, the pawl slides over the teeth on the ratchet, preventing it from engaging the ratchet and allowing pulley A to idle, thus avoiding secondary blade flipping. This structure, through a mechanical limiting mechanism, can precisely control the blade flipping action to be triggered only during unidirectional movement, ensuring the orderly spraying of both sides of the blade by the spray head.

[0016] This invention features a nozzle structure designed as a vertical flat structure, which effectively expands the vertical spray coverage area and allows for better uniform spraying of the vertically arranged and horizontally placed blade surfaces. This achieves full coverage spraying to a greater extent and minimizes the occurrence of missed spraying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main appearance structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention from the front view.

[0019] Figure 3 This is a schematic diagram of the connection structure of the transmission mechanism, the moving mechanism, and the spraying mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the transmission mechanism structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of pulley A of this utility model;

[0022] Figure 6 This is a schematic diagram of the spraying mechanism structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the hanging mechanism structure of this utility model;

[0024] Figure 8 This is a top view schematic diagram of the meshing structure of the limiting teeth and limiting mouth of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Spray box; 2. Partition plate; 3. Hanging mechanism; 301. Turntable; 302. Baffle; 303. Upright pole; 304. Limiting port; 305. Limiting tooth; 306. Ring block; 4. Transmission mechanism; 401. Shaft A; 402. Spur gear; 403. Rack; 404. Ratchet; 405. Pawl; 406. Connecting rod; 407. Pulley A; 408. Spring; 409. Transmission belt; 4010. Pulley B; 4011. Shaft B; 5. Moving mechanism; 6. Spraying mechanism; 601. Diverter pipe; 602. Spray head; 603. Pipe; 7. Blade. Detailed Implementation

[0027] like Figures 1 to 8As shown, the present invention relates to a precision spraying device for uniformly coating the surface of unmanned aerial vehicle (UAV) parts, including a spray box 1, a partition 2 arranged in the middle inside the spray box 1, a hanging mechanism 3 arranged in the middle of the upper surface of the partition 2, a transmission mechanism 4 arranged in the middle of the lower surface of the partition 2, a moving mechanism 5 arranged in the front surface of the partition 2, and a spraying mechanism 6 arranged on the moving mechanism 5.

[0028] The transmission mechanism 4 includes a shaft A401, the upper end of which is rotatably connected to the lower surface of the partition 2. A spur gear 402 is arranged at the lower end of the shaft A401, and a rack 403 meshes with the surface of the spur gear 402. A ratchet 404 is arranged in the middle of the shaft A401, and a pawl 405 is arranged on the ratchet 404. This invention utilizes a spur gear 402 and rack 403 structure. When the moving end of the moving mechanism 5 drives the spray head 602 to move laterally to complete the single-sided spraying of the blade 7, the rack 403 moves synchronously with the moving end and meshes with the spur gear 402. The rotation of the spur gear 402 is transmitted to the pulley A407 via the shaft A401, and then to the pulley B4010 via the transmission belt 409, causing the turntable 301 to rotate the upright 303, thus flipping the blade 7. This design utilizes a single power source to synchronously drive the spraying and flipping actions, reducing redundant equipment structures and ensuring uniform spraying on both sides of the blade 7 while lowering costs. The design also incorporates a ratchet 404 and pawl 405 structure. When the moving end of the moving mechanism 5 drives the spur gear 402... When rack 403 moves to the left, spur gear 402 drives ratchet 404 to rotate clockwise. At this time, pawl 405 is held by the teeth of ratchet 404 by spring 408, driving pulley A407 to drive turntable 301 to rotate through transmission belt 409, thus turning blade 7 over. When the moving end drives rack 403 to reset to the right, spur gear 402 drives ratchet 404 to rotate counterclockwise. At this time, pawl 405 slides on the teeth of ratchet 404 and will not hold ratchet 404 to rotate, so pulley A407 is in an idle state, avoiding secondary turning of blade 7. This structure, through mechanical limiting mechanism, can precisely control the turning action of blade 7 to be triggered only during unidirectional movement, ensuring that the nozzle 602 sprays the blade 7 on both sides in an orderly manner.

[0029] In this embodiment of the invention, the upper surface of the partition 2 is inclined, and a collection hopper is arranged at one end of the partition 2. A barrel is arranged below the collection hopper and placed inside the lower end of the spray box 1. The inclined structure of the partition 2 is designed so that the paint sprayed on the blade 7 can flow into the collection hopper along the slope after dripping, and then be collected and transferred to the barrel for temporary storage. This makes it easier for workers to clean up excess paint in the spray box 1.

[0030] In an embodiment of this utility model, the hanging mechanism 3 includes a turntable 301 arranged on the upper surface of the partition 2. A cover 302 is arranged on the upper surface of the turntable 301. A vertical rod 303 is arranged in the middle of the upper end of the cover 302. A paddle 7 is fixed on the vertical rod 303 by bolts. A plurality of limiting holes 304 are arranged at intervals along the circumferential direction on the lower side of the cover 302. Limiting teeth 305 are arranged in the plurality of limiting holes 304. The limiting teeth 305 are fixed to the upper surface of the partition 2 by a ring block 306. The installation of the turntable 301 in this utility model allows the upright 303 to rotate, indirectly changing the orientation of the blades 7, facilitating the spray head 602 to spray both sides of the blades 7. The installation of the baffle 302 allows the turntable 301 to be hidden inside, preventing paint from spraying onto the turntable 301 and causing corrosion damage. The upright 303 allows the blades 7 to be sprayed to be fixed to its surface with bolts, arranged vertically and spaced horizontally, providing a position for spraying. The limiting teeth 305 are made of flexible material, and the number of teeth in the limiting teeth 305 is... Based on actual work requirements, the drive is designed to maintain a stable state after rotation. The driving force of the rack 403 driving the spur gear 402 is greater than the stress of the limit port 304 rotation. By designing the limit tooth 305 and limit port 304 structure, the baffle 302, which is rotated by the turntable 301, can be stopped by the meshing of the limit tooth 305 and limit port 304. When the turntable 301 stops rotating and the baffle 302 rotates with the upright 303, it will be meshed and stop rotating. This ensures that the blade 7 is stably sprayed by the spray head 602.

[0031] In this embodiment of the invention, the moving mechanism 5 is a linear moving structure with a lead screw. The upper surface of the moving end of the moving mechanism 5 is connected to the spraying mechanism 6, and the lower surface of the moving end of the moving mechanism 5 is connected to the transmission mechanism 4. The linear moving mechanism 5 of this invention allows the diversion pipe 601 mounted on its upper surface and the connecting rod 406 mounted on its lower surface to move synchronously, achieving the effect of synchronously driving multiple devices with a single power source, thus saving money on unnecessary equipment expenditures.

[0032] In an embodiment of this invention, the spraying mechanism 6 includes a diversion pipe 601 arranged on the upper surface of the moving end of the moving mechanism 5. Multiple nozzles 602 are spaced apart from top to bottom on the rear surface of the diversion pipe 601, each nozzle 602 having a vertically flat structure. A pipe 603 is arranged on the front surface of the diversion pipe 601. By setting the nozzle 602 structure, which is designed as a vertically flat structure, this invention can effectively expand the vertical and horizontal spraying coverage area, enabling better uniform spraying of the vertically arranged and horizontally placed blades 7, achieving a full-coverage spraying effect to a greater extent and minimizing missed spraying.

[0033] In an embodiment of this utility model, the transmission mechanism 4 further includes a connecting rod 406 arranged on the lower surface of the moving end of the moving mechanism 5, and a rack 403 is arranged at one end of the connecting rod 406. The connecting rod 406 of this utility model is configured such that when the moving end of the moving mechanism 5 moves along the diverter pipe 601 mounted on the moving upper surface, it can also move synchronously with the rack 403, thus achieving the effect of connected synchronous movement.

[0034] In an embodiment of this utility model, a pawl 405 is rotatably mounted inside a pulley A407, and the side of the pawl 405 is connected to the inside of the pulley A407 via a spring 408. The pulley A407 is arranged on a shaft A401, and the pulley A407 is connected to a pulley B4010 via a transmission belt 409. The pulley B4010 is arranged on the lower surface of the turntable 301 via a shaft B4011. The pulley A407 of this invention has a hollow internal structure, allowing the ratchet 404 and pawl 405 to be arranged inside. The pulley A407 is rotatably mounted on the shaft A401. When the shaft A401 rotates clockwise with the ratchet 404, it engages the pawl 405 and rotates with the pulley A407. Conversely, when the shaft A401 rotates counterclockwise with the ratchet 404, it does not engage the pawl 405. This ensures that while the shaft A401 rotates, it does not pull the pulley A407 along with it, allowing the shaft to rotate freely. A401, with ratchet 404, rotates freely within pulley A407, preventing the moving end of the moving mechanism 5 from resetting and flipping the blade 7, which would make it difficult for the nozzle 602 to spray the other side of the blade 7. The installation of spring 408 ensures that one end of pawl 405 always remains in contact with the ratchet teeth on ratchet 404. Through the design of the structure of pulley A407, transmission belt 409, and pulley B4010, the rotational force generated by rack 403 meshing with spur gear 402 can be transmitted to turntable 301, achieving the effect of power transmission.

[0035] Working Principle: This embodiment provides a precision spraying device for uniformly coating the surface of UAV parts. During use, the operator first needs to connect an external power supply to the device and control its operation via a control panel. The operator places the blades 7 to be sprayed onto the upright 303 and then secures them to the upright 303 with bolts. After the blades 7 are fixed, the operator uses a pump to transport the coating material to be sprayed through pipe 603 to a distribution pipe 601. The coating material is then evenly distributed through the distribution pipe 601 to multiple nozzles 602, where it is applied to the surface of UAV parts. Paint is sprayed onto one side of the blade 7. When the nozzle 602 is spraying paint, the operator can activate the moving mechanism 5. The linear moving mechanism 5 will then move laterally along the upper surface of the distributor pipe 601, thus synchronously moving the nozzle 602. The laterally moving nozzle 602 will evenly spray paint onto one side of the blade 7. After the nozzle 602 is completely removed from the surface of the blade 7, the rack 403 mounted on the lower surface of the moving mechanism 5 will engage with the spur gear 402. At this time, as the moving end of the moving mechanism 5 continues to move the nozzle 602, it will also continuously move the rack 403. The spur gear 402 has half a tooth on its upper part. When the rack 403 fully meshes with the spur gear 402, it will rotate half a turn. The spur gear 402, having rotated half a turn, drives the pulley A407 to rotate via the shaft A401. The pulley A407, in turn, drives the pulley B4010 to rotate via the transmission belt 409. The pulley B4010 drives the turntable 301 to rotate via the shaft B4011. After the turntable 301 rotates, it will cause the upright 303 mounted on its upper surface and the blade 7 fixed on its surface to rotate half a turn, thus flipping the blade 7. At this time, the moving mechanism 5 resets. When the lateral movement is reset, the rack 403 will re-engage the spur gear 402, and the shaft A401 driven by the spur gear 402 will rotate the ratchet 404 installed in the pulley A407. At this time, the ratchet 404 will rotate counterclockwise, and the pawl 405 stuck on the ratchet 404 will not limit it. Thus, the shaft A401 will not rotate the pulley A407, and the lateral movement mechanism 5 will no longer drive the blade 7 to rotate and flip. The lateral movement mechanism 5 will then carry the spray head 602 to spray the other side of the blade 7.

[0036] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles, comprising a spraying tank (1), characterized in that: The spray box (1) has a partition (2) arranged in the middle inside. A hanging mechanism (3) is arranged in the middle of the upper surface of the partition (2). A transmission mechanism (4) is arranged in the middle of the lower surface of the partition (2). A moving mechanism (5) is arranged on the front surface of the partition (2). A spraying mechanism (6) is arranged on the moving mechanism (5). The transmission mechanism (4) includes a shaft A (401), the upper end of which is rotatably connected to the lower surface of the partition (2), a spur gear (402) is arranged at the lower end of the shaft A (401), a rack (403) meshes with the surface of the spur gear (402), a ratchet (404) is arranged in the middle of the shaft A (401), and a pawl (405) is arranged on the ratchet (404).

2. The precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles according to claim 1, characterized in that: The upper surface of the partition (2) is inclined. A collection hopper is arranged at one end of the partition (2), and a barrel is arranged below the collection hopper. The barrel is placed inside the lower end of the spray box (1).

3. The precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles according to claim 2, characterized in that: The mounting mechanism (3) includes a turntable (301) arranged on the upper surface of the partition (2). A baffle (302) is arranged on the upper surface of the turntable (301). A vertical rod (303) is arranged in the middle of the upper end of the baffle (302). A paddle (7) is fixed on the vertical rod (303) by bolts. Multiple limiting ports (304) are arranged at intervals along the circumference of the lower side of the baffle (302). Limiting teeth (305) are arranged in the multiple limiting ports (304). The limiting teeth (305) are fixed to the upper surface of the partition (2) by ring blocks (306).

4. The precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles according to claim 3, characterized in that: The moving mechanism (5) is a linear moving structure with a lead screw. The upper surface of the moving end of the moving mechanism (5) is connected to the spraying mechanism (6), and the lower surface of the moving end of the moving mechanism (5) is connected to the transmission mechanism (4).

5. The precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles according to claim 4, characterized in that: The spraying mechanism (6) includes a diversion pipe (601) arranged on the upper surface of the moving end of the moving mechanism (5). Multiple nozzles (602) are arranged at intervals from top to bottom on the rear surface of the diversion pipe (601). All nozzles (602) have a vertical flat structure. A pipe (603) is arranged on the front surface of the diversion pipe (601).

6. The precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles according to claim 5, characterized in that: The transmission mechanism (4) further includes a connecting rod (406) arranged on the lower surface of the moving end of the moving mechanism (5), and a rack (403) is arranged at one end of the connecting rod (406).

7. The precision spraying device for uniform coating of surfaces of parts of unmanned aerial vehicles according to claim 6, characterized in that: The pawl (405) is rotatably mounted inside the pulley A (407), and the side of the pawl (405) is connected to the inside of the pulley A (407) by a spring (408). The pulley A (407) is arranged on the shaft A (401). The pulley A (407) is connected to the pulley B (4010) by a transmission belt (409), and the pulley B (4010) is arranged on the lower surface of the turntable (301) by a shaft B (4011).

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