Corner filling and sealing device for aircraft bushing bearing products and using method of corner filling and sealing device

Abstract

The invention discloses a fillet sealing device for aircraft bushing bearing products and a using method. The fillet sealing device mainly comprises a workbench, an automatic glue mixing machine, an automatic glue injection machine, an open area fillet sealing and shaping tool and a narrow area fillet sealing and shaping tool. The automatic glue injection machine is located on the left side of the working table face and is composed of a glue injection gun, a glue injection machine working table, a three-jaw chuck, a lead screw sliding table module and a lead screw. The fillet sealing open area shaping tool is placed on the left half side of a tool cabinet in the middle of a workbench and is composed of a rotary plug, an assembly part, a glue injection hole, a glue scraping plate, a fillet sealing rubber ring and a base body fixing device. The fillet sealing narrow area shaping tool is placed on the left half side of a tool cabinet in the middle of a workbench and is composed of a rotating rod, a connecting shaft and a rotating glue scraping plate. According to the corner filling and sealing device, automatic operation of glue mixing and sealing is achieved, corner filling and sealing integration is achieved, and the corner filling and sealing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing technology, specifically to a filler seal device and its usage method for aircraft bushing bearing products. Background Technology

[0002] Corner sealant application mainly refers to the process of applying sealant to the angle formed by the bushing shoulder or bearing mounting groove and the substrate. In the manufacturing process of military and civilian aircraft, corner sealant application for bushing shoulders and bearings is an unavoidable part of the assembly process. It achieves both static sealing between parts to prevent gas and liquid intrusion and dynamic compensation to suppress fretting wear between parts. The uniformity of the sealant mixture and the airtightness after sealing directly affect the dynamic and static effects between parts, determining the service life of the assembly and the safety of the aircraft.

[0003] Currently, the military and civilian aircraft manufacturing industry generally relies on manual labor for mixing sealants and filling corner seals on parts. Multi-component sealants require manual mixing by pulling and rotating the material. However, due to the high viscosity of the sealant, the mixing process requires significant external force, resulting in a slow process and difficulty in ensuring uniformity. Similarly, the corner sealing process requires workers to squeeze the sealant to seal the parts. This process is challenging in confined spaces, makes it difficult to ensure consistent sealant consistency, and necessitates subsequent scraping of excess sealant and repair of missing areas, significantly reducing work efficiency and impacting product quality. Furthermore, while there are existing devices for corner sealing, such as the Chinese invention patent CN109834012A, which discloses a tool for filling corner seals on aircraft outer surface depressions, this device can only seal corners on aircraft outer surface depressions, exhibiting poor versatility. Moreover, this device can only seal corners in open areas and is unsuitable for confined spaces. Summary of the Invention

[0004] This invention provides a corner sealing device and its usage method for aircraft bushing bearing products, in order to solve the problems mentioned in the background art, such as slow manual glue mixing process, poor glue mixing uniformity, poor consistency of manual glue injection molding leading to unreliable quality and increased labor intensity due to rework, and the current limitations of glue injection, which makes it difficult to solve the problem of corner sealing in narrow areas.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A corner sealing device for aircraft bushing bearing products includes a worktable, an automatic glue mixer, an automatic glue dispensing machine, a worktable, a set of open area corner sealing shaping tools, and a set of narrow area corner sealing shaping tools.

[0006] The automatic glue mixing machine is located on the right side of the workbench and mainly consists of a rotary motor, motor protector, sealant, sealant limit sleeve, glue mixing machine fixing frame, linear bearing, reciprocating motor, etc. The automatic glue dispensing machine is located on the left side of the workbench and mainly consists of a glue dispensing gun, glue dispensing machine worktable, three-grip chuck, lead screw slide module, lead screw, etc. The corner sealing open area shaping tool is placed on the left half of the tool cabinet in the middle of the workbench and mainly consists of a rotating plug, assembly, glue dispensing hole, glue scraper, corner sealing rubber ring, and base fixing device. The corner sealing narrow area shaping tool is placed on the right half of the tool cabinet in the middle of the workbench and mainly consists of a rotating rod, connecting shaft, and rotating glue scraper.

[0007] The aforementioned corner sealing device and its usage method for aircraft bushing bearing products include a workbench surface used to fix an automatic glue mixing machine and an automatic glue dispensing machine, with two sets of corner sealing shaping tools placed on the lower layer for easy on-site retrieval and use. The workbench is designed with a height of 1 m based on ergonomic principles, which can meet the needs of workers to perform corner sealing work on parts while seated.

[0008] The aforementioned corner sealing device and method for aircraft bushing bearing products can sequentially achieve the mixing of sealant, filling with a glue gun, and corner sealing of aircraft bushing bearing parts, realizing the integrated function of mixing sealant and corner sealing of aircraft bushing bearing parts, and reducing labor intensity.

[0009] The automatic adhesive mixing machine has two types of motors, a rotary motor and a reciprocating motor, which can simultaneously drive the sealant to rotate and reciprocate, so that the sealant is quickly and evenly mixed.

[0010] The reciprocating motor has a minimum speed of 3 mm / s. After the sealant is mixed evenly, the reciprocating motor moves downward to slowly push the evenly mixed sealant through the conduit into the dispensing gun. The sealant pushes the blockage inside the dispensing gun upward to the limit point, thus completing the filling of the dispensing gun.

[0011] The open area corner seal shaping tool consists of 25 sets, each of which can be used for open area corner seals of bearings and bushings with different inner diameters. It can be used for 90% of bearings and bushings in the aerospace industry. The outer diameter of the upper end of the fixing device of each set of open area corner seal shaping tool is consistent with the inner diameter of the assembly to ensure that the parts are not eccentric during operation.

[0012] The rotary plug is machined with a glue injection hole. During glue injection, the glue injection nozzle of the glue gun can be inserted into the glue injection hole to fix the glue dispensing position. At the same time, the rotary plug drives the glue scraper. By injecting glue while rotating the rotary plug, the corner sealing of the assembly is achieved in one circumferential motion, reducing the time for manual glue filling and secondary shaping.

[0013] The narrow-area corner seal shaping tool has a total of 20 components. Each component is suitable for corner seals of bearings and bushings with different inner diameters. It can adapt to 90% of aerospace bearings and bushings. The outer diameter of the rotating rod of each narrow-area corner seal shaping tool is exactly the same as the inner diameter of the assembly, ensuring that the parts are not misaligned during operation. At the same time, the parallel area of ​​the scraper surface of the rotating scraper is only 1 mm. At this time, the parallel area of ​​the scraper surface can perfectly fit the assembly, achieving the best effect of no glue residue after scraping.

[0014] The rotating scraper of the narrow area corner-filling sealing shaping tool can rotate. Before working, the rotating scraper is vertically downward under the action of gravity, which facilitates the shaping tool to enter the inner hole of the assembly smoothly. During working, it rotates 90° to achieve the corner-filling sealing effect. After working, the rotating scraper will be vertical to the rotating rod under the action of gravity, which facilitates the separation of the tool from the assembly.

[0015] The rotating scraper of the narrow-area corner-filling sealing shaping tool can rotate around its axis. Before operation, the scraper rotates vertically downwards under gravity, facilitating the tool's smooth passage through the assembly. During operation, rotating the scraper 90° allows for direct corner-filling sealing. After operation, the scraper rotates vertically downwards again under gravity, facilitating the tool's smooth separation from the assembly. Simultaneously, the contact surface width between the scraper and the assembly is only 1 mm, effectively separating the sealant forming area from the excess area during rotation. After the sealant has cured, excess sealant can be quickly removed, ensuring the formed sealing ring meets engineering requirements.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention integrates the mixing and sealing of aircraft bushing and bearing parts, improving processing efficiency and reducing labor intensity; it solves the problems of slow manual mixing and poor mixing uniformity; it solves the problems of poor appearance consistency and increased labor intensity caused by repeated rework in manual corner sealing; and it also solves the problem of the current limitations of glue injection, which makes it difficult to solve corner sealing in narrow areas. Attached Figure Description

[0017] The invention application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 A schematic diagram of the overall structure of a filler seal device and its usage method for an aircraft bushing bearing product provided by the present invention; Figure 2 A schematic diagram of an automatic glue dispensing machine for a filler seal device and its usage method for aircraft bushing bearing products provided by the present invention. Figure 3A schematic diagram of an automatic glue mixer for a filler seal device and its usage method for aircraft bushing bearing products provided by the present invention. Figure 4 A schematic diagram of a corner seal opening area shaping tool structure for a corner seal device and its usage method for aircraft bushing bearing products provided by the present invention. Figure 5 This invention provides a schematic diagram of the structure and working principle of a corner sealing narrow area shaping tool for a corner sealing device and its usage method for aircraft bushing bearing products.

[0019] 1. Workbench; 2. Automatic glue dispensing machine; 3. Automatic glue mixing machine; 4. Open area corner sealing and shaping tool; 5. Narrow area corner sealing and shaping tool; 6. Rotary motor; 7. Motor protector; 8. Sealant; 9. Sealant limit sleeve; 10. Glue mixing machine fixing frame; 11. Linear bearing; 12. Reciprocating motor, etc.; 13. Glue dispensing gun; 14. Glue dispensing machine workbench; 15. Three-grip chuck; 16. Screw slide module; 17. Screw; 18. Assembly parts; 19. Rotary plug; 20. Glue dispensing hole; 21. Glue scraper; 22a. First corner sealing ring; 22b. Second corner sealing ring; 23. Substrate fixing device; 24. Rotating rod; 25. Connecting shaft; 26. Rotating scraper. Detailed Implementation

[0020] The technical aspects of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0021] Please see Figure 1-5 A corner seal device and its usage method for aircraft bushing bearing products, the mechanical structure of which consists of a worktable 1, an automatic glue injection machine 2, an automatic glue mixing machine 3, a corner seal shaping tool for open areas 4, a corner seal shaping tool for narrow areas 5, etc.

[0022] The automatic mixing machine 3 mainly consists of a rotary motor 6, a motor protector 7, sealant 8, a sealant limit sleeve 9, a mixing machine mounting bracket 10, a linear bearing 11, and a reciprocating motor 12. It is located on the right side of the worktable 1. The lower end of the mixing machine mounting bracket 10 is connected to the worktable 1 via fastening bolts to ensure its stability. The rotary motor 6 is a Panasonic MHMF041L servo motor with a rated power of 500W and a speed of 25 revolutions per minute, capable of rotating the sealant 8. It also has a telescopic shaft at its front end for vertical movement and is equipped with a motor protector 7 to prevent injury to personnel. The reciprocating motor 12 is a Longxiang Electromechanical SXTL reciprocating motor, capable of up to 15 reciprocating motions per minute and a maximum stroke of 25... The automatic mixing machine 3 and the automatic dispensing machine 2 are connected by a linear bearing 11 moving up and down on the mixing machine frame 10, which in turn moves the sealant 8 up and down. Under the combined action of rotation and up and down movement, the sealant 8 is uniformly mixed in a short time. At the same time, the reciprocating motor 12 has a minimum pushing speed of 3 mm / s, which can slowly push the uniformly mixed sealant 8 into the dispensing gun 13 during the dispensing process. The sealant pushes the internal blockage of the dispensing gun 13 to slide upward to the limit point and stop moving, thus completing the filling of the dispensing gun 13 and realizing the connection between the automatic mixing machine 3 and the automatic dispensing machine 2.

[0023] The surface of the workbench 1 is used to fix the automatic glue mixing machine 2 and the automatic glue dispensing machine 3. Two sets of corner filling and sealing tools are placed on the lower layer for easy access and use by operators. Based on the principle of human factors engineering, the workbench 1 is designed to be 1m high, which can meet the needs of workers to complete the corner filling and sealing of parts in a seated position.

[0024] The automatic glue mixing machine 2 has a rotary motor 6 and a reciprocating motor 12, which can simultaneously drive the sealant to rotate and reciprocate, ensuring that the sealant 8 is quickly and evenly mixed within a specified time, thereby reducing the labor intensity of manual glue mixing and improving the mixing efficiency.

[0025] The automatic glue dispensing machine 2 mainly consists of a glue dispensing gun 13, a glue dispensing machine worktable 14, a three-grip chuck 15, a lead screw slide module 16, and a lead screw 17. Because the glue dispensing machine worktable 14 is relatively heavy and has a low center of gravity, it is not specially connected to the worktable 1. The glue dispensing gun 13 is connected to the air compression system at the rear end of the glue dispensing gun 13 in the automatic glue dispensing machine 2 via a conduit, providing uniform compressed air to push the internal blockage of the glue dispensing gun 13 downwards at a constant speed, thereby squeezing out the sealant. The automatic glue dispensing machine 2 achieves uniform glue dispensing, ensuring a glue application process without stringing or breakage. The glue gun 13 also features a built-in suction function, preventing glue dripping during use. The screw slide module 16 and screw 17 on the automatic glue dispensing machine 2 form a screw assembly, enabling the glue gun to move up and down to accommodate components 18 of varying heights. Furthermore, the automatic glue dispensing machine 2 is bolted to a three-jaw chuck 15, ensuring the secure fixing of the corner sealing and shaping tool 4 in open areas or the corner sealing and shaping tool 5 in narrow areas.

[0026] The open-area corner-filling sealing and shaping tool 4 mainly consists of an assembly 18, a rotating plug 19, an injection hole 20, a scraper 21, a corner-filling sealing ring 22, and a base fixing device 23. When not in use, it is placed on the left half of the tool cabinet inside the workbench 1. When in use, it is clamped by the three-jaw chuck 15. During operation, the rotating plug 19 is placed in the inner hole of the base fixing device 23, clamping the assembly 18. At the same time, the inner diameter of the assembly 18 is completely consistent with the outer diameter of the upper end face of the fixing device 23, thereby achieving... The parts are not eccentric during operation. Therefore, in order to accommodate assemblies 18 with different inner diameters, 25 fixing devices 23 with different outer diameters are set up, which can accommodate 90% of bearings and bushings in the aerospace industry. At the same time, a glue injection hole 20 is machined on the rotary plug 19. During glue injection, the glue injection nozzle of the glue gun 13 can be inserted into the glue injection hole 20 to fix the glue dispensing position. Meanwhile, a glue scraper 21 is welded on the rotary plug 19, which can obtain the required corner sealing ring 22 by injecting glue while rotating.

[0027] The narrow-area corner-filling and sealing shaping tool 5 mainly consists of a rotating rod 24, a connecting shaft 25, and a rotating scraper 26. The outer diameter of the uppermost rotating rod 24 is the same as the inner diameter of the assembly 18. Simultaneously, the rotating rod 24 connects to the rotating scraper 26 via the connecting shaft 25. Before operation, the rotating scraper 26 is vertically downward due to gravity. During operation, the rotating scraper 26 is rotated 90 degrees. The working principle diagram is shown below. Figure 5 As shown, after operation, the rotating scraper 26 will become vertical again under the action of gravity, facilitating the separation of the narrow area corner filling and sealing shaping tool 5 from the assembly 18. At the same time, a set of narrow area corner filling and sealing shaping tools 5 has 20 different specifications, and the outer diameter of its rotating rod 24 can adapt to 90% of aerospace bearings and bushings.

[0028] Working principle: Since the open area corner filling and sealing tool 4 is simpler to use than the narrow area corner filling and sealing tool 5, and the usage process of the narrow area corner filling and sealing tool 5 is the same as that of the open area corner filling and sealing tool 4, the only difference is that the scraper is rotated 90° during use. Therefore, this invention only demonstrates the overall working principle of the equipment based on the narrow area corner filling and sealing tool 5.

[0029] Before use, insert the rotating rod 24 into the assembly 18, rotate the rotating scraper 26 counterclockwise by 90° so that the parallel area of ​​the scraper surface of the rotating scraper 26 is evenly attached to the inner surface of the assembly 18, and then clamp the assembly 18 and the narrow area corner filling and sealing shaping tool 5 into the three-grip chuck.

[0030] In use, first fix the sealant 8 onto the automatic mixing machine 3, turn on the power switch, and mix the sealant 8 evenly; then adjust the reciprocating motor 12 to the lowest feed speed, compress the sealant 8 and enter the dispensing gun 13 through the glue tube. The sealant pushes the internal plug of the dispensing gun 13 upward to the limit point, completing the filling of the dispensing gun 13. When the dispensing gun 13 is full of sealant, turn off the power switch of the reciprocating motor 12; then, place the dispensing nozzle of the dispensing gun 13 on the area where the corner sealant needs to be formed. Within the space of circle 22b, turn on the power switch of the dispensing machine worktable 14, so that the air compression system of the worktable 14 provides uniform compressed air to the dispensing gun 13, pushing the dispensing gun 13 to slide downward at a uniform speed to achieve uniform dispensing of glue; finally, while dispensing glue, rotate the rotating rod 24, and scrape the sealant into a uniform corner sealing ring 22 by rotating the glue scraper 26. After use, pull the rotating rod 24 out of the assembly 18 and let the corner sealing ring 22 air dry.

[0031] It should be noted that when an element is described as "connected" to another element, it means that it is directly connected to the other element. The orientation or positional relationship indicated by "left," "right," etc., as used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device and element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

Claims

1. A filler seal device for aircraft bushing bearing products, characterized in that, include: Workbench (1), Automatic glue dispensing machine (2), Automatic glue mixing machine (3), A set of open area corner filling and sealing shaping tools (4), A set of narrow area corner filling and sealing shaping tools (5); The automatic glue dispensing machine (2) is placed on one side of the upper surface of the workbench (1), and the automatic glue mixing machine (3) is fixedly installed on the other side of the upper surface of the workbench (1). The automatic glue dispensing machine (2) and the automatic glue mixing machine (3) are connected by glue tubes. A set of open area corner filling and sealing shaping tools (4) and a set of narrow area corner filling and sealing shaping tools (5) are placed in the lower space of the workbench (1); The automatic glue mixer (3) is used to mix the sealant evenly; An automatic glue dispensing machine (2) is used to inject a uniformly mixed sealant into a set of open area corner sealant shaping tools (4) or a set of narrow area corner sealant shaping tools (5); A set of open area corner sealing shaping tools (4) is used to complete the corner sealing of the open area; A set of narrow area corner sealing shaping tools (5) is used to complete the corner sealing of narrow areas.

2. The filler seal device for aircraft bushing bearings according to claim 1, characterized in that, The automatic glue mixer (3) consists of a rotary motor (6), a motor protector (7), sealant (8), a sealant limiting sleeve (9), a glue mixer mounting bracket (10), a linear bearing (11), and a reciprocating motor (12). It is located on the right side of the workbench (1). The lower end of the glue mixer mounting bracket (10) is connected to the workbench (1) by fastening bolts. The rotary motor (6) drives the sealant (8) to rotate. At the same time, its front end has a telescopic shaft that can move up and down. It also has a motor protector (7). The reciprocating motor (12) drives the linear bearing (8) to rotate. The linear bearing (11) moves up and down on the fixed frame (10) of the glue mixer, thereby driving the sealant (8) to move up and down. Under the combined action of rotation and up and down movement, the sealant (8) is uniformly mixed in a short time. The reciprocating motor (12) slowly pushes the uniformly mixed sealant (8) into the glue gun (13) during the glue injection process. The sealant pushes the internal blockage of the glue gun (13) to slide upward to the limit point and stop moving, thus completing the glue filling of the glue gun (13) and realizing the connection between the automatic glue mixer (3) and the automatic glue injector (2).

3. A filler seal device for aircraft bushing bearings according to claim 2, characterized in that, The automatic glue dispensing machine (2) consists of a glue dispensing gun (13), a glue dispensing machine worktable (14), a three-grip chuck (15), a lead screw slide module (16), and a lead screw (17); The glue gun (13) and the automatic glue dispensing machine (2) are connected by an air compression system at the rear end of the glue gun (13) through a conduit. The system provides uniform compressed air to the glue gun (13) to push the internal blockage of the glue gun (13) to slide downward at a uniform speed, thereby squeezing the sealant to achieve uniform glue dispensing. The glue gun (13) has a built-in back suction function. The screw slide module (16) and screw (17) on the automatic glue dispensing machine (2) form a screw assembly, which realizes the up and down movement of the glue gun and adapts to different heights of the fittings (18). The automatic glue dispensing machine (2) is connected by a three-jaw chuck (15) through bolts to ensure the fixation of the corner sealing and shaping tool (4) in the open area or the corner sealing and shaping tool (5) in the narrow area.

4. A filler seal device for aircraft bushing bearings according to claim 3, characterized in that, The open area corner sealing and shaping tool (4) consists of an assembly (18), a rotating plug (19), an injection hole (20), a scraper (21), a corner sealing ring (22), and a base fixing device (23). When not in use, it is placed on the left side of the tool cabinet inside the workbench (1). When in use, it is clamped by a three-grip chuck (15).

5. A filler seal device for aircraft bushing bearings according to claim 4, characterized in that, During operation, the rotating plug (19) is placed in the inner hole of the base fixing device (23) to clamp the fitting (18). At the same time, the inner diameter of the fitting (18) is completely consistent with the outer diameter of the upper end face of the fixing device (23). A glue injection hole (20) is machined on the rotating plug (19). When injecting glue, the glue injection nozzle of the glue gun (13) can be inserted into the glue injection hole (20) to fix the glue outlet position. At the same time, a scraper (21) is welded on the rotating plug (19). By injecting glue while rotating, a filler sealing ring (22) that meets the requirements can be obtained.

6. A filler seal device for aircraft bushing bearings according to claim 3, characterized in that, The narrow area filling and sealing shaping tool (5) consists of a rotating rod (24), a connecting shaft (25), and a rotating scraper (26); the outer diameter of the uppermost rotating rod (24) is consistent with the inner diameter of the assembly (18); at the same time, the rotating rod (24) is connected to the rotating scraper (26) through the connecting shaft (25).

7. A filler seal device for aircraft bushing bearings according to claim 6, characterized in that, Before work, the rotating scraper (26) is vertically downward due to gravity. During work, the rotating scraper (26) is rotated 90 degrees. After work, the rotating scraper (26) will become vertical again under gravity, which facilitates the separation of the corner filling and sealing shaping tool (5) and the fitting (18) in narrow areas.

8. A method of using a filler seal device for aircraft bushing bearings, characterized in that, When using the narrow area filler seal shaping tool (5), the method includes: Before use, insert the rotating rod (24) into the assembly (18), rotate the rotating scraper (26) counterclockwise by 90° so that the parallel area of ​​the scraper surface of the rotating scraper (26) is evenly attached to the inner surface of the assembly (18), and then clamp the assembly (18) and the narrow area corner filling and sealing shaping tool (5) into the three-grip chuck. When using, first fix the sealant (8) onto the automatic glue mixer (3), turn on the power switch, and mix the sealant (8) evenly; Next, adjust the reciprocating motor (12) to the lowest feed speed, compress the sealant (8) and enter the glue gun (13) through the glue tube. The sealant pushes the internal blockage of the glue gun (13) upward to the limit point and completes the filling of the glue gun (13). When the glue gun (13) is full of sealant, turn off the power switch of the reciprocating motor (12). Then, place the nozzle of the glue gun (13) in the space where the corner sealing ring (22b) needs to be formed, turn on the power switch of the glue dispensing machine worktable (14), and let the air compression system of the worktable (14) provide uniform compressed air to the glue gun (13), push the glue gun (13) to slide down at a uniform speed to achieve uniform glue dispensing from the glue gun (13); Finally, while dispensing the adhesive, rotate the rotating rod (24) and scrape the sealant evenly into a corner sealing ring (22) by rotating the scraper (26). After use, pull the rotating rod (24) out of the fitting (18) and let the corner sealing ring (22) air dry naturally.

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