Apparatus for applying a coating to an aircraft surface

Abstract

The application discloses a machine surface coating application device in the technical field of part surface treatment, which comprises a liquid storage structure, an extrusion structure is arranged in the liquid storage structure, and a brush head structure is arranged in communication with the liquid storage structure; a flow adjusting structure is arranged between the liquid storage structure and the brush head structure; the extrusion structure delivers the coating in the liquid storage structure to the flow adjusting structure, and the coating is quantitatively delivered to the brush head structure under the action of the flow adjusting structure; the coating in the liquid storage structure is delivered to the flow adjusting structure through the extrusion structure, and then delivered to the brush head structure through the flow adjusting structure to realize brushing work; the extrusion structure and the liquid storage structure are matched with each other, repeated dipping of liquid material is not needed, work efficiency is improved, material dripping loss is reduced, the flow adjusting structure avoids the problems of uneven coating thickness, accumulation and flow in the coating area caused by difficult control of liquid output, the flatness of the product surface is ensured, and the practicability and safety of the device are further improved.

Description

Technical Field

[0001] This invention relates to the field of surface treatment technology for parts, and more particularly to an apparatus for applying coatings to aircraft surfaces. Background Technology

[0002] Due to space constraints, large-area spraying cannot be used on small and complex areas such as aircraft skin, rivets, trimmed edges, and locally damaged areas. The industry generally uses manual application methods to complete various coating tasks, with the main methods including manual brushing and manual roller coating. Manual brushing relies on a brush to pick up paint or anti-corrosion coating liquids and manually wipe them back and forth to complete the coating. Operators can only roughly control the amount of paint picked up, brushing pressure, and brushing speed, which easily leads to problems such as excessive paint supply causing drips and accumulation. Repeated brushing can also cause work interruptions, resulting in low efficiency and failing to meet the demands of fast and efficient operations. Manual roller coating uses a roller to absorb paint, and is only suitable for thin-layer application on flat areas. It cannot be used on small areas of an aircraft, or irregularly shaped areas such as protruding rivets. When using manual brushing or manual roller coating on small areas of an aircraft, or irregularly shaped areas such as protruding rivets, excessive liquid output can cause drips and accumulation, while insufficient material supply in narrow gaps can lead to missed areas, thin coatings, and uneven film thickness. Summary of the Invention

[0003] To overcome its shortcomings, the technical problem to be solved by this invention is: how to improve the problem of poor coating quality caused by the inability to control the flow rate in the existing spraying operation of small and complex parts of the aircraft surface.

[0004] The technical solution adopted by this invention to solve its technical problem is: An aircraft surface coating application device includes a liquid storage structure, an extrusion structure installed inside the liquid storage structure, and a brush head structure connected to the liquid storage structure; a flow regulating structure is provided between the liquid storage structure and the brush head structure; the extrusion structure delivers the coating material in the liquid storage structure to the flow regulating structure, and the coating material is quantitatively delivered to the brush head structure under the action of the flow regulating structure.

[0005] Furthermore, the liquid storage structure includes a liquid storage cylinder and a liquid delivery pipe; the extrusion structure includes an extrusion block slidably disposed inside the liquid storage cylinder, the extrusion block dividing the inner space of the liquid storage cylinder into a mutually sealed liquid storage chamber and a driving chamber, the liquid delivery pipe being disposed at one end of the liquid storage cylinder near the liquid storage chamber and communicating with the liquid storage chamber; a driving component is disposed at one end of the extrusion block facing the driving chamber, the driving component being used to drive the extrusion block to slide inside the liquid storage cylinder.

[0006] Furthermore, the drive assembly includes a screw connected to the extrusion block, the screw being coaxially arranged with the liquid storage cylinder, the screw extending outward from the liquid storage cylinder along the drive cavity and threadedly engaging with the liquid storage cylinder, and a drive element being provided at the end of the screw away from the liquid storage cylinder.

[0007] Furthermore, the drive assembly includes a lead screw arranged along the axis of the liquid storage cylinder and passing through the extrusion block, with both ends of the lead screw rotatably connected to both ends of the liquid storage cylinder; the inner wall of the liquid storage cylinder is provided with a protrusion parallel to the axis of the liquid storage cylinder, and the extrusion block is provided with a groove that slides with the protrusion; one end of the lead screw away from the liquid storage cavity extends out of the liquid storage cylinder and is provided with a drive component.

[0008] Furthermore, the flow regulation structure includes a regulating cylinder located at one end of the liquid storage cylinder near the liquid storage chamber. A baffle is installed inside the regulating cylinder, dividing the space inside the regulating cylinder into an inlet chamber and an outlet chamber. The end of the liquid delivery pipe away from the liquid storage cylinder extends into the inlet chamber, and the outlet chamber is connected to the brush head structure. The baffle has an outlet hole that connects the inlet chamber and the outlet chamber. A blocking member is movably installed on one side of the baffle in the inlet chamber, and the blocking member is connected to an regulating member. The regulating member drives the blocking member to move on the surface of the baffle, thereby changing the liquid flow area of ​​the inlet hole.

[0009] Furthermore, the shielding component includes a fan-shaped shielding plate, which is coaxially arranged with the partition plate; the surface of either side of the shielding plate is slidably attached to the surface of the partition plate; the partition plate is provided with multiple liquid inlet holes; the adjusting component drives the shielding plate to slide circumferentially along the partition plate, and the shielding plate sequentially blocks multiple liquid inlet holes along the sliding path.

[0010] Furthermore, the adjusting component includes a positioning post disposed at one end of the liquid storage cylinder near the liquid storage chamber, a turntable rotatably disposed at the end of the positioning post away from the liquid storage cylinder, a drive shaft vertically fixed to the surface of the end of the turntable away from the positioning post, the drive shaft being arranged along the axial direction of the turntable; a baffle plate is connected to the end of the drive shaft away from the turntable; an arc-shaped groove is opened in the circumference of the turntable, the liquid outlet end of the liquid delivery pipe passes through the arc-shaped groove through the turntable and enters the liquid inlet chamber, the liquid delivery pipe slidingly engages with the arc-shaped groove; during the rotation of the turntable, the path of the liquid delivery pipe at the contact position with the turntable is adapted to the path of the arc-shaped groove.

[0011] Furthermore, the driving component includes a knob, and the knob, liquid reservoir, turntable, and adjusting cylinder are coaxially arranged and have the same outer diameter.

[0012] Furthermore, the brush head structure includes a brush handle connected to the flow regulating structure. The brush handle has multiple flow channels communicating with the flow regulating structure. Brush bristles are provided at the end of the brush handle away from the flow regulating structure, and the position of the brush bristles corresponds to the position of the flow channel opening away from the flow regulating structure.

[0013] The beneficial effects of this invention are: The coating material in the storage structure is conveyed to the flow regulating structure through the extrusion structure, and then to the brush head structure for brushing. The extrusion structure and the storage structure work together to eliminate the need for repeated dipping of liquid, improving work efficiency and reducing material dripping loss. Moreover, the flow regulating structure avoids uneven coating thickness, accumulation, and dripping caused by difficulty in controlling the liquid output, ensuring the smoothness of the product surface. This further enhances the practicality and safety of the device, reduces the operation steps of traditional tools, solves the problem of long operation time, and adapts to the needs of fast and efficient operation. Attached Figure Description

[0014] Figure 1 This is a schematic front view of the device structure in this invention; Figure 2 This is a schematic diagram of the main sectional view of the device structure in this invention; Figure 3 This is a cross-sectional schematic diagram of the extrusion structure and the liquid outlet structure in this invention; Figure 4 This is a cross-sectional schematic diagram of the flow adjustment structure and brush head structure in this invention; Figure 5 This is a top view of the turntable in this invention; Figure 6 This is a three-dimensional schematic diagram of the flow regulation structure in this invention; Figure 7 This is a top view of the extruded block in this invention.

[0015] The diagram is labeled as follows: 1-Liquid storage structure, 2-Extrusion structure, 3-Flow regulation structure, 4-Protective cover, 101-Liquid storage cylinder, 102-Liquid delivery pipe, 201-Drive component, 202-Screw, 203-Extrusion block, 204-Protrusion strip, 301-Positioning column, 302-Turntable, 303-Arc groove, 304-Regulating cylinder, 305-Drive shaft, 306-Baffle plate, 307-Partition plate, 308-Liquid inlet hole, 309-Brush head structure. Detailed Implementation

[0016] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0017] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure.

[0018] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0019] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0020] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0022] The invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2 As shown, this application proposes an aircraft surface coating application device, including a liquid storage structure 1, an extrusion structure 2 installed inside the liquid storage structure 1, and a brush head structure 309 connected to the liquid storage structure 1; a flow regulating structure 3 is provided between the liquid storage structure 1 and the brush head structure 309; the extrusion structure 2 conveys the coating material in the liquid storage structure 1 to the flow regulating structure 3, and the coating material is quantitatively conveyed to the brush head structure 309 under the action of the flow regulating structure 3. The coating material in the liquid storage structure 1 is conveyed to the flow regulating structure 3 by the extrusion structure 2, and then conveyed to the brush head structure 309 through the flow regulating structure to achieve the brushing operation. The extrusion structure 2 and the liquid storage structure 1 work together, eliminating the need for repeated dipping of liquid, improving work efficiency, reducing material dripping loss, and preventing uneven coating thickness, accumulation, and dripping caused by difficulty in controlling the liquid output, ensuring the smoothness of the product surface, and further improving the practicality and safety of the device.

[0024] The liquid storage structure 1 can be a liquid storage box or a liquid storage tube, and the extrusion structure 2 can be a pneumatic pressurization structure or a deformation extrusion structure. The effect of the coating being extruded from the liquid storage structure 1 is achieved by changing the pressure.

[0025] In a preferred embodiment, such as Figure 3As shown, the liquid storage structure 1 includes a liquid storage cylinder 101 and a liquid delivery pipe 102; the extrusion structure 2 includes an extrusion block 203 slidably disposed inside the liquid storage cylinder 101, the extrusion block 203 dividing the inner space of the liquid storage cylinder 101 into a mutually sealed liquid storage chamber and a driving chamber, the liquid delivery pipe 102 being disposed at one end of the liquid storage cylinder 101 near the liquid storage chamber and communicating with the liquid storage chamber; a driving assembly is disposed at one end of the extrusion block 203 facing the driving chamber, the driving assembly being used to drive the extrusion block 203 to slide inside the liquid storage cylinder 101; that is, the driving assembly drives the extrusion block 203 to slide inside the liquid storage cylinder 101, causing the volume of the liquid storage chamber to change, causing the paint liquid in the liquid storage chamber to be discharged outward from the liquid delivery pipe 102.

[0026] The drive assembly includes a screw connected to the extrusion block 203. The screw is coaxially arranged with the liquid storage cylinder 101. The screw extends outward from the liquid storage cylinder 101 along the drive cavity and is threadedly engaged with the liquid storage cylinder 101. A drive element 201 is provided at the end of the screw away from the liquid storage cylinder 101. The threaded engagement structure ensures that after the extrusion block 203 is adjusted to a preset position and the drive is stopped, the position of the extrusion block 203 will not slip or shift due to the effect of the threaded engagement, ensuring the stability and accuracy of the coating extrusion process. In another embodiment, such as... Figure 3 , Figure 7 As shown, the driving assembly includes a lead screw 202 arranged along the axis of the liquid storage cylinder 101 and passing through the extrusion block 203. The two ends of the lead screw 202 are rotatably connected to the two ends of the liquid storage cylinder 101. The inner wall of the liquid storage cylinder 101 is provided with a protrusion 204 parallel to the axis of the liquid storage cylinder 101. The extrusion block 203 is provided with a groove that slides with the protrusion 204. One end of the lead screw 202 away from the liquid storage cavity passes through the liquid storage cylinder 101 and is provided with a driving element 201. That is, the lead screw 202 passes through the extrusion block 203 and is threadedly engaged with the extrusion block 203. The rotation of the lead screw 202 drives the extrusion block 203 to achieve linear movement. Under the limiting effect of the protrusion 204 and the groove, the extrusion block 203 can only form a stable linear movement. This structure can ensure that the extrusion block 203 moves in a directional and stable manner, without arbitrary rotation or positional deviation, thus improving the stability of the adjustment process.

[0027] For flow regulation structure 3, a manual or electronic valve that continuously adjusts the flow area via a switching structure can be used for convenient flow control; however, to further reduce costs and simplify the structure, and further reduce the overall size of the device, such as... Figure 4As shown, the flow regulation structure 3 includes a regulating cylinder 304 disposed at one end of the liquid storage cylinder 101 near the liquid storage chamber. A partition 307 is disposed inside the regulating cylinder 304, dividing the space inside the regulating cylinder 304 into an inlet chamber and an outlet chamber. The end of the liquid delivery pipe 102 away from the liquid storage cylinder 101 extends into the inlet chamber, and the outlet chamber is connected to the brush head structure 309. The partition 307 has an outlet hole, which connects the inlet chamber and the outlet chamber. A blocking member is movably disposed on one side of the partition 307 in the inlet chamber, and the blocking member is connected to an regulating member. The regulating member drives the blocking member to move on the surface of the partition 307, causing the liquid flow area of ​​the inlet hole 308 to change. In other words, by adjusting the blocking component, the blocking component can block or make way for the liquid outlet, thereby achieving flow regulation. The adjusting component can be a knob or handle located outside the regulating cylinder 304. By rotating the knob or handle, the blocking component can slide relative to the partition 307, thereby adjusting the positional relationship with the liquid outlet.

[0028] In a preferred embodiment, such as Figure 6 As shown, the blocking component includes a fan-shaped blocking plate 306, which is coaxially arranged with the partition 307. The blocking plate 306 is slidably mounted on the surface of the partition 307 on either side. The partition 307 has multiple liquid inlet holes 308. An adjusting component drives the blocking plate 306 to slide circumferentially along the partition 307, sequentially blocking the multiple liquid inlet holes 308 along the sliding path. It should be noted that the multiple liquid inlet holes 308 can be spaced apart on one side of the partition 307, with the blocking plate 306 sliding under the action of the adjusting component to sequentially block the multiple liquid inlet holes 308, or rotating in the opposite direction to allow the multiple liquid inlet holes 308 to move out of their positions sequentially, thereby regulating the flow rate.

[0029] The adjusting component includes a positioning post 301 disposed at one end of the liquid storage cylinder 101 near the liquid storage chamber. A turntable 302 is rotatably mounted at the end of the positioning post 301 away from the liquid storage cylinder 101. A drive shaft is vertically fixed to the surface of the end of the turntable 302 away from the positioning post 301, and the drive shaft is axially arranged along the turntable 302. A baffle plate 306 is connected to the end of the drive shaft away from the turntable 302. Figure 5 As shown, the turntable 302 has an arc-shaped groove 303 along its circumference. The liquid outlet end of the liquid delivery pipe 102 passes through the arc-shaped groove 303, enters the turntable 302, and slides into the liquid inlet chamber. The liquid delivery pipe 102 and the arc-shaped groove 303 are in sliding fit. During the rotation of the turntable 302, the path of the liquid delivery pipe 102 and the turntable 302 is adapted to the path of the arc-shaped groove 303. That is to say, the turntable 302 is set between the liquid storage cylinder 101 and the regulating cylinder 304. By rotating the turntable 302, the turntable 302 drives the drive shaft to rotate. The drive shaft drives the baffle plate 306 to rotate around the baffle plate 306, thereby blocking or making way for the liquid inlet hole 308 and accurately adjusting the flow rate of the coating.

[0030] The liquid delivery pipe 102 can be set in multiple intervals, and the arc groove 303 is also set in multiple intervals. The multiple arc grooves 303 are matched with the multiple liquid delivery pipes 102 one by one, and even ensure that the liquid delivery pipes 102 and the turntable 302 will not interfere with each other during the adjustment of the turntable 302.

[0031] A sealing layer is provided between the baffle plate 306 and the partition plate 307, which is generally a rubber pad layer, to ensure that no paint leaks from the contact gap during relative sliding, thereby improving the sealing effect.

[0032] Furthermore, the drive unit 201 includes a knob, and the knob, liquid reservoir 101, turntable 302 and adjusting cylinder 304 are coaxially arranged and have the same outer diameter. The entire structure is pen-shaped, which is convenient for the operator to hold and use. In actual use, the operator can easily carry this cylindrical device, and in actual use, for small and complex parts of the aircraft, the pen-like grip can be used to apply coatings or repairs, which improves convenience and makes the operation more precise.

[0033] The brush head structure 309 includes a brush handle connected to the flow regulating structure 3. The brush handle has multiple channels communicating with the flow regulating structure 3. Bristles are provided at the end of the brush handle away from the flow regulating structure 3, and the position of the bristles corresponds to the position of the flow channel opening away from the flow regulating structure 3. That is to say, paint is delivered to the bristles through the flow channels to achieve a stable and precise brushing process. Moreover, multiple flow channels are arranged at intervals and in parallel. The densely arranged flow channels ensure that the paint received by the bristles is relatively uniform, thereby improving the brushing quality.

[0034] In addition, for convenient transportation and protection of the bristles when not in use, such as Figure 1 , Figure 2 As shown, the outer side of the brush handle is equipped with a detachable protective cover 4. The protective cover 4 surrounds the outer side of the brush bristles. The protective cover 4 is made of transparent plastic material and is connected to the brush handle by plugging or snapping to ensure connection stability and sealing.

[0035] In summary, this application proposes an aircraft surface coating application device. The coating material in the storage structure 1 is conveyed to the flow regulating structure 3 via the extrusion structure 2, and then to the brush head structure 309 for brushing. The extrusion structure 2 and the storage structure 1 work together, eliminating the need for repeated dipping of liquid, thus improving work efficiency and reducing material dripping loss. Furthermore, the flow regulating structure avoids uneven coating thickness, accumulation, and dripping caused by difficulty in controlling the liquid output, ensuring the smoothness of the product surface. This further enhances the practicality and safety of the device, reduces the operation steps of traditional tools, solves the problem of long operation times, and meets the needs of fast and efficient operations. Moreover, the entire device can be operated with one hand. The extrusion structure 2 is compact and has a smooth transmission, eliminating the need for repeated dipping of liquid. The liquid output level can be quickly adjusted with the liquid output regulating structure, and the brush head structure 309 can be used directly. Simultaneously, the threaded drive has a natural self-locking characteristic, preventing liquid leakage due to accidental contact during storage and transport, further improving the practicality and safety of the device, reducing the operation steps of traditional tools, solving the problem of long operation times, and meeting the needs of fast and efficient operations.

Claims

1. An aircraft surface coating application device, comprising a liquid storage structure (1), characterized in that, An extrusion structure (2) is installed inside the liquid storage structure (1), and a brush head structure (309) is connected to the liquid storage structure (1); a flow regulating structure (3) is provided between the liquid storage structure (1) and the brush head structure (309); the extrusion structure (2) transports the coating material in the liquid storage structure (1) to the flow regulating structure (3), and the coating material is quantitatively transported to the brush head structure (309) under the action of the flow regulating structure (3).

2. The aircraft surface coating application device according to claim 1, characterized in that, The liquid storage structure (1) includes a liquid storage cylinder (101) and a liquid delivery pipe (102); the extrusion structure (2) includes an extrusion block (203) slidably disposed inside the liquid storage cylinder (101), the extrusion block (203) dividing the inner space of the liquid storage cylinder (101) into a mutually sealed liquid storage chamber and a driving chamber, the liquid delivery pipe (102) is disposed at one end of the liquid storage cylinder (101) near the liquid storage chamber and communicates with the liquid storage chamber; a driving component is disposed at one end of the extrusion block (203) facing the driving chamber, the driving component is used to drive the extrusion block (203) to slide inside the liquid storage cylinder (101).

3. The aircraft surface coating application device according to claim 2, characterized in that, The drive assembly includes a screw connected to the extrusion block (203), the screw is coaxially arranged with the liquid storage cylinder (101), the screw extends outward along the drive cavity through the liquid storage cylinder (101) and is threadedly engaged with the liquid storage cylinder (101), and a drive element (201) is provided at the end of the screw away from the liquid storage cylinder (101).

4. The aircraft surface coating application device according to claim 2, characterized in that, The drive assembly includes a lead screw (202) arranged along the axis of the liquid storage cylinder (101) and passing through the extrusion block (203), with both ends of the lead screw (202) rotatably connected to both ends of the liquid storage cylinder (101); the inner wall of the liquid storage cylinder (101) is provided with a protrusion (204) parallel to the axis of the liquid storage cylinder (101), and the extrusion block (203) is provided with a groove that slides with the protrusion (204); one end of the lead screw (202) away from the liquid storage cavity passes through the liquid storage cylinder (101) and is provided with a drive element (201).

5. The aircraft surface coating application device according to claim 2, characterized in that, The flow regulation structure (3) includes a regulating cylinder (304) located at one end of the liquid storage cylinder (101) near the liquid storage chamber. A partition (307) is provided inside the regulating cylinder (304), which divides the space inside the regulating cylinder (304) into an inlet chamber and an outlet chamber. The end of the liquid delivery pipe (102) away from the liquid storage cylinder (101) extends into the inlet chamber, and the outlet chamber is connected to the brush head structure (309). The partition (307) has an outlet hole, which is connected to the inlet chamber and the outlet chamber. A blocking member is movably provided on one side of the partition (307) in the inlet chamber, and the blocking member is connected to an regulating member. The regulating member drives the blocking member to move on the surface of the partition (307), so that the liquid flow area of ​​the inlet hole (308) changes.

6. The aircraft surface coating application apparatus according to claim 5, characterized in that, The shielding component includes a fan-shaped shield (306), which is coaxially arranged with the partition (307); the surface of either side of the shield (306) is slidably attached to the surface of the partition (307); the partition (307) is provided with multiple liquid inlet holes (308); the adjusting component drives the shield (306) to slide circumferentially along the partition (307), and the shield (306) sequentially blocks multiple liquid inlet holes (308) on the sliding path.

7. The aircraft surface coating application apparatus according to claim 6, characterized in that, The adjusting component includes a positioning column (301) located at one end of the liquid storage cylinder (101) near the liquid storage chamber. A turntable (302) is rotatably mounted at the end of the positioning column (301) away from the liquid storage cylinder (101). A drive shaft is vertically fixed to the surface of the end of the turntable (302) away from the positioning column (301). The drive shaft is axially arranged along the turntable (302). A baffle plate (306) is connected to the end of the drive shaft away from the turntable (302). An arc-shaped groove (303) is provided on the turntable (302) in the circumferential direction. The liquid outlet end of the liquid delivery pipe (102) passes through the turntable (302) through the arc-shaped groove (303) and enters the liquid inlet chamber. The liquid delivery pipe (102) slides in cooperation with the arc-shaped groove (303). During the rotation of the turntable (302), the path of the liquid delivery pipe (102) and the turntable (302) is adapted to the path of the arc-shaped groove (303).

8. The aircraft surface coating application apparatus according to claim 7, characterized in that, The drive unit (201) includes a knob, and the knob, liquid reservoir (101), turntable (302) and adjusting cylinder (304) are coaxially arranged and have the same outer diameter.

9. The aircraft surface coating application apparatus according to any one of claims 1-8, characterized in that, The brush head structure (309) includes a brush handle connected to the flow regulating structure (3). The brush handle has multiple flow channels communicating with the flow regulating structure (3). The brush handle is provided with bristles at the end away from the flow regulating structure (3), and the position of the bristles corresponds to the position of the flow channel opening away from the flow regulating structure (3).

10. The aircraft surface coating application apparatus according to claim 9, characterized in that, The outer side of the brush handle is provided with a removable protective cover (4), which surrounds the outer side of the brush bristles.

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