Adjustable aircraft glue spreading squeegee

By designing an adjustable aircraft coating scraper, and utilizing a rotating disk and limiting structure to enable rapid replacement and adjustment of the scraper head, the problem of low coating efficiency is solved. This adapts to the complex surface shape of the fuselage and improves the adaptability and precision of coating.

CN224463111UActive Publication Date: 2026-07-07XIAN AERONAUTICAL POLYTECHNIC INST

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAN AERONAUTICAL POLYTECHNIC INST
Filing Date
2025-08-08
Publication Date
2026-07-07

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Abstract

The utility model discloses an adjustable aircraft gluing scraper relates to aircraft gluing technical field, including scraper main part and the hand part, the scraper main part middle part both sides are equipped with the hand part, and the inside one side of scraper main part is equipped with movable cavity, the movable cavity inside is connected with fixed column. The utility model discloses adjustable aircraft gluing scraper, by making the rotating disc rotate to adjust the scraper head that scraper main part is used to scrape glue, and then need not operating personnel to disassemble and replace gluing assembly, can complete the replacement of scraper head to satisfy the gluing demand of different area and improve work efficiency, by the big thumb is limited in the spacing cavity and limits scraper main part, prevents the scraper main part from sliding in the palm of staff and influences gluing work, by adjusting the distance between the edge of rectangular scraper strip and the edge of scraper main body, and then make rectangular scraper strip can accurately extend into the different gap of aircraft and carry out scraping, improve the scraping range.
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Description

Technical Field

[0001] This utility model relates to the field of aircraft adhesive application technology, specifically an adjustable aircraft adhesive application scraper. Background Technology

[0002] Aircraft adhesive application refers to the use of specialized sealants, adhesives, or structural adhesives during aircraft manufacturing, assembly, and maintenance. An aircraft adhesive application scraper is a specialized hand tool used in the aircraft adhesive application process for precisely applying, smoothing, and shaping sealants or adhesives. It plays a crucial role in ensuring the quality of adhesive joints and controlling the thickness and shape of the adhesive layer.

[0003] Application No. 202021421441.6 describes a novel scraper for aircraft cabin cleaning. This patent includes a base plate, a sliding component, and a descaling component. The base plate has a blade on one side. The sliding component includes a slider and a rod. The slider is slidably mounted on the surface of the base plate. The rod is fixed to one side of the slider, and a collar is fitted onto the surface of the rod. The descaling component is fixedly connected to the collar, and one side of the descaling component is in close contact with the blade. This invention improves the scraping effect of the base plate by adding a blade on one side, thereby increasing cleaning efficiency. Furthermore, by moving the descaling component, it scrapes against the blade of the base plate, removing dirt adhering to the blade surface and cleaning the blade, thus facilitating subsequent use of the base plate.

[0004] While the aforementioned comparative documents can achieve cleaning of the substrate blade for convenient subsequent use, the surface shape and edge angle of different areas of the body vary. The aforementioned patents can only scrape adhesive with a sharp blade, making it difficult to scrape out adhesive layers of different shapes to meet the adhesive application needs of different areas of the body. The adhesive application needs of different areas can only be met by disassembling and replacing the adhesive application components, which seriously affects the adhesive application efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable aircraft adhesive scraper to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable aircraft coating scraper, comprising a scraper body and a gripper. The gripper is provided on both sides of the middle part of the scraper body, and a movable cavity is provided on one side of the interior of the scraper body. A fixed column is connected inside the movable cavity, and a rotating disk is rotatably connected to the outer wall of the fixed column. A pointed scraper head, a semi-circular scraper head, and an arc scraper head are fixedly connected to the outer wall of the rotating disk, and the pointed scraper head, semi-circular scraper head, and arc scraper head are distributed at equal angles. Limiting holes are provided inside the pointed scraper head, semi-circular scraper head, and arc scraper head.

[0007] The scraper head can be replaced by rotating the rotating disc, thereby improving work efficiency.

[0008] Preferably, a fixing frame is connected to the outer wall of the scraper body near the movable cavity. The fixing frame has a "U" shaped structure, and a sliding seat is slidably connected to the inner wall of the fixing frame.

[0009] The slide is moved by being guided by a fixed frame.

[0010] Preferably, a spring is fixedly connected to one side of the top of the slide, and a pull ring is connected to the other side of the top of the slide, and the slide has an "I" shaped structure.

[0011] Pulling the ring causes the slide to move longitudinally.

[0012] Preferably, a limiting pin is welded to the bottom end of the outer wall of the slide block, and the bottom end of the limiting pin extends into the limiting hole, and the top end of the outer wall of the spring is connected to the fixing frame.

[0013] The slide block moves down by spring reset until the limit pin is inserted into the limit hole, thereby adjusting the scraper head used to scrape glue.

[0014] Preferably, a limiting cavity is provided on the side of the scraper body near the gripper, so as to facilitate the operator's fingers to be inserted into the limiting scraper body.

[0015] By inserting the thumb into the limiting cavity, the operator's fingers can be positioned to limit the scraper body, preventing the scraper body from sliding in the worker's palm and affecting the glue application process.

[0016] Preferably, a snap-fit ​​groove is provided inside the scraper body on the side away from the active cavity, and a fixing plate is connected inside the snap-fit ​​groove.

[0017] Preferably, a rectangular scraper is connected to one side of the outer wall of the fixing plate, and a threaded pin is threadedly connected to the side of the scraper body near the snap-fit ​​groove.

[0018] Apply adhesive using a rectangular scraper to the bonding surfaces of composite materials and to fill large gaps.

[0019] Preferably, the fixing plate has equally spaced fixing holes inside, and the bottom end of the threaded pin is inserted into the fixing hole.

[0020] By rotating the threaded pin and inserting it into the corresponding fixing hole, the rectangular scraper is limited and prevented from moving randomly.

[0021] As can be seen from the above, the adjustable aircraft coating scraper provided by this utility model has the following beneficial effects.

[0022] 1. By rotating the rotary disc, the scraper head used for applying glue on the scraper body can be adjusted, thereby eliminating the need for operators to disassemble and replace the glue application components. This allows for the replacement of the scraper head to meet the glue application needs of different areas and improve work efficiency.

[0023] 2. By inserting the thumb into the limiting cavity, the scraper body is limited, preventing it from sliding in the worker's palm and affecting the glue application process.

[0024] 3. By adjusting the distance between the edge of the rectangular scraper and the edge of the scraper body, the rectangular scraper can be precisely inserted into different gaps in the aircraft to scrape glue, thereby increasing the glue scraping range. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the main sectional view of the present invention;

[0029] Figure 5 This is a three-dimensional structural diagram of the scraper head of this utility model;

[0030] Figure 6 This is a three-dimensional sectional view of the fixing frame of this utility model;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the rectangular scraper of this utility model;

[0032] Figure 8 This is a three-dimensional cross-sectional view of the fixing plate of this utility model.

[0033] In the diagram: 1. Scraper body; 2. Handle; 3. Movable cavity; 4. Fixed column; 5. Rotary disk; 6. Sharp-angle scraper head; 7. Semi-circular scraper head; 8. Arc-shaped scraper head; 9. Limiting hole; 10. Fixing frame; 11. Slide seat; 12. Limiting pin; 13. Spring; 14. Pull ring; 15. Barrier seat; 16. Limiting cavity; 17. Snap-fit ​​groove; 18. Fixing plate; 19. Rectangular scraper strip; 20. Threaded pin; 21. Fixing hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1-6 This utility model provides a technical solution: an adjustable aircraft coating scraper, including a scraper body 1 and a gripper 2. The gripper 2 is provided on both sides of the middle of the scraper body 1, and a movable cavity 3 is provided on one side inside the scraper body 1. A fixed column 4 is connected inside the movable cavity 3, and a rotating disk 5 is rotatably connected to the outer wall of the fixed column 4. A pointed scraper head 6, a semi-circular scraper head 7, and an arc scraper head 8 are fixedly connected to the outer wall of the rotating disk 5. The pointed scraper head 6, the semi-circular scraper head 7, and the arc scraper head 8 are distributed at equal angles. Limiting holes 9 are provided inside the pointed scraper head 6, the semi-circular scraper head 7, and the arc scraper head 8. A fixed frame 10 is connected to the side of the outer wall near the movable cavity 3. The fixed frame 10 has a "U" shaped structure. A slide seat 11 is slidably connected to the inner wall of the fixed frame 10. A spring 13 is fixedly connected to one side of the top of the slide seat 11, and a pull ring 14 is connected to the other side of the top of the slide seat 11. The slide seat 11 has an "I" shaped structure. A limit pin 12 is welded to the bottom of the outer wall of the slide seat 11, and the bottom end of the limit pin 12 extends into the limit hole 9. The top of the outer wall of the spring 13 is connected to the fixed frame 10. A limit cavity 16 is opened in the middle of the scraper body 1 near the gripper part 2, so as to facilitate the operator's fingers to be inserted into the limit scraper body 1.

[0036] For specific implementation, please refer to Figures 1-4 First, the adhesive is sprayed onto the designated location using the adhesive application equipment. Then, the operator's hand grasps the gripper 2 and inserts the thumb into the limiting cavity 16, thereby facilitating the operator's finger to limit the scraper body 1 and preventing the scraper body 1 from sliding in the operator's palm and affecting the adhesive application work.

[0037] See Figures 2-5 When applying adhesive to different areas of the aircraft, the operator first inserts their fingers into the pull ring 14 and pulls the slide 11 upward. As the slide 11 moves upward along the fixed frame 10, it compresses the spring 13, causing it to deform until the slide 11 drives the limit pin 12 to disengage from the limit hole 9, thereby canceling the limit on the rotating disk 5. Then, the rotating disk 5 in the movable cavity 3 is rotated so that it rotates around the fixed column 4 as the axis. The rotation of the rotating disk 5 will drive the pointed scraper head 6, the semi-circular scraper head 7, and the arc scraper head 8 to rotate together until one of the pointed scraper head 6, the semi-circular scraper head 7, and the arc scraper head 8 rotates to the barrier seat 15. At this time, the spring 13 returns to its original position, causing the slide 11 to move downward until the limit pin 12 is inserted into the limit hole 9, thereby adjusting the scraper head used to scrape the adhesive in the scraper body 1.

[0038] At this point, wedge-shaped glue lines are scraped out at the rivet head seal and the edge of the skin overlap joint using the pointed scraper 6. At the structural joint and fuel tank seal, semi-circular or arc-shaped glue strips are scraped out using the semi-circular scraper 7 and the arc-shaped scraper 8. This eliminates the need for operators to disassemble and replace the glue application components to meet the glue application needs of different areas. The scraper head can be replaced simply by rotating the rotating disk 5, thereby improving work efficiency.

[0039] See Figure 2 , Figure 3 , Figure 7 and Figure 8 The scraper body 1 has a snap-fit ​​groove 17 on the side away from the active cavity 3, and a fixing plate 18 is connected inside the snap-fit ​​groove 17; a rectangular scraper strip 19 is connected to one side of the outer wall of the fixing plate 18, and a threaded pin 20 is threadedly connected inside the scraper body 1 on the side close to the snap-fit ​​groove 17; the fixing plate 18 has equally spaced fixing holes 21 inside, and the bottom end of the threaded pin 20 is inserted into the fixing hole 21.

[0040] For specific implementation, please refer to Figure 6 and Figure 7 Since the fixing plate 18 is connected to the rectangular scraper 19, first move the fixing plate 18 into the snap-fit ​​groove 17, then rotate the threaded pin 20 into the fixing hole 21, and then fix the rectangular scraper 19. After that, apply glue to the bonding surface of the composite material and the filling of large gaps through the rectangular scraper 19.

[0041] Furthermore, the threaded pin 20 can be rotated to disengage from the fixing hole 21, thereby removing the restriction on the fixing plate 18. Then, the fixing plate 18 can be moved so that the distance between the edge of the rectangular scraper 19 and the edge of the scraper body 1 changes until the fixing plate 18 moves to the designated position. At this time, the threaded pin 20 can be rotated to insert into the corresponding fixing hole 21 to limit the rectangular scraper 19, so that the rectangular scraper 19 can be accurately inserted into different gaps of the aircraft to scrape glue, thereby increasing the scraping range.

[0042] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An adjustable aircraft coating scraper, comprising a scraper body (1) and gripper portions (2), wherein gripper portions (2) are provided on both sides of the middle portion of the scraper body (1), and a movable cavity (3) is provided on one side of the interior of the scraper body (1), characterized in that: The movable cavity (3) is connected to a fixed column (4), and the outer wall of the fixed column (4) is rotatably connected to a rotating disk (5). The outer wall of the rotating disk (5) is fixedly connected to a sharp-angle scraper (6), a semi-circular scraper (7) and an arc scraper (8), and the sharp-angle scraper (6), the semi-circular scraper (7) and the arc scraper (8) are distributed at equal angles. The sharp-angle scraper (6), the semi-circular scraper (7) and the arc scraper (8) are all provided with limit holes (9).

2. The adjustable aircraft adhesive applicator scraper according to claim 1, characterized in that: The outer wall of the scraper body (1) is connected to a fixed frame (10) on the side near the active cavity (3). The fixed frame (10) has a "U" shaped structure, and a slide seat (11) is slidably connected to the inner wall of the fixed frame (10).

3. The adjustable aircraft adhesive applicator scraper according to claim 2, characterized in that: A spring (13) is fixedly connected to one side of the top of the slide (11), and a pull ring (14) is connected to the other side of the top of the slide (11). The slide (11) has an "I" shaped structure.

4. The adjustable aircraft adhesive applicator scraper according to claim 3, characterized in that: The bottom of the outer wall of the slide (11) is welded with a limiting pin (12), and the bottom of the limiting pin (12) extends into the limiting hole (9). The top of the outer wall of the spring (13) is connected to the fixing frame (10).

5. The adjustable aircraft adhesive applicator scraper according to claim 1, characterized in that: A limiting cavity (16) is provided on the side of the scraper body (1) near the gripper (2) to facilitate the operator's fingers to be inserted into the limiting scraper body (1).

6. The adjustable aircraft adhesive applicator according to claim 5, characterized in that: The scraper body (1) has a snap-fit ​​groove (17) on the side away from the active cavity (3), and a fixing plate (18) is connected inside the snap-fit ​​groove (17).

7. The adjustable aircraft adhesive scraper according to claim 6, characterized in that: A rectangular scraper (19) is connected to one side of the outer wall of the fixed plate (18), and a threaded pin (20) is threadedly connected to the side of the scraper body (1) near the snap-fit ​​groove (17).

8. The adjustable aircraft coating scraper according to claim 7, characterized in that: The fixing plate (18) has equally spaced fixing holes (21) inside, and the bottom end of the threaded pin (20) is inserted into the fixing hole (21).