Aeronautical part paint spraying shielding tool
By using a reverse-mounted masking plate and limiting component design, the problems of poor masking and overspray in traditional masking methods are solved, achieving a highly efficient and precise painting process, which significantly improves production efficiency and product quality.
Patent Information
- Application Number
- CN202422917570.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Traditional spray painting masking methods are difficult to effectively cover products with complex shapes, curved surfaces, and small parts, resulting in frequent overspraying and a long time consumption, which affects production efficiency and pass rate.
A reverse-mounted masking plate, a paint masking fixture with spray holes, workpiece limiting parts and connecting bolts, combined with the waist-shaped hole and limiting protrusion of the workpiece limiting parts, and a rubber layer and sealing ring layer are used to ensure masking quality and sealing performance.
It achieves efficient masking, avoids overspraying, improves production speed and pass rate, increases production efficiency by 4000%, and reduces overspray defect rate by 90%.
Smart Images
Figure CN223543225U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-precision parts processing technology, and in particular to a paint masking fixture for aerospace parts. Background Technology
[0002] Due to their extremely high performance requirements, aerospace product parts typically require painting only designated areas, with strict measures taken to prevent overpainting in other areas. Any missed masking can result in anything from minor paint peeling and rework to complete product scrap. Traditional masking methods typically involve applying high-temperature resistant tape. While this method works well for regular, flat surfaces, it is ineffective for complex shapes, curved surfaces, and small parts. It is prone to incomplete masking leading to overpainting and is also extremely time-consuming. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a masking fixture for painting aerospace parts.
[0004] The above-mentioned utility model objective is achieved through the following technical solution:
[0005] A masking fixture for painting aerospace parts includes a set of masking plates arranged in opposite directions. The surface of the masking plates has a plurality of spray holes evenly distributed. A workpiece limiting component is provided on one side inside the spray holes of the masking plates. The surface of the masking plates has a plurality of connecting holes, and connecting bolts are provided inside the connecting holes. Two masking plates are connected together by the connecting bolts.
[0006] By adopting the above technical solution, during processing, several workpieces are evenly placed above the workpiece limiting component inside one of the shielding plates. Then, another shielding plate is placed over the shielding plate and the workpieces, and the two shielding plates are connected and fixed with bolts. Then, one side of the shielding plate is sprayed to complete the internal spraying of the workpiece. During the spraying process, the quality of the shielding can be effectively guaranteed, and over-spraying will not occur, resulting in a high production rate.
[0007] In a preferred embodiment, the present invention can be further configured such that: a waist-shaped hole is provided in the middle of the workpiece limiting member, and limiting protrusions are provided on both sides of the waist-shaped hole.
[0008] By adopting the above technical solution, the waist-shaped hole facilitates the spraying of paint into the interior of the workpiece. In addition, the limiting protrusion can fix and guide the workpiece, ensuring the processing accuracy.
[0009] In a preferred embodiment, the present invention can be further configured such that a rubber layer is provided on the outside of the workpiece limiting member.
[0010] By adopting the above technical solution, the rubber layer can effectively reduce the friction between the workpiece and the workpiece fiber cloth, thus providing good protection for the workpiece.
[0011] In a preferred embodiment, the present invention can be further configured such that the spraying hole is a countersunk hole.
[0012] By adopting the above technical solution, countersunk holes can effectively reduce the shading effect that the thickness of the shielding plate may cause.
[0013] In a preferred embodiment, the present invention can be further configured such that a sealing ring layer is provided at the bottom of the shielding plate.
[0014] By adopting the above technical solution, the sealing ring can ensure the sealing between the two masking plates after connection, and prevent paint from entering from the connection between the two masking plates during the spraying process, thus affecting the spraying effect.
[0015] In summary, this utility model has at least one of the following beneficial technical effects:
[0016] 1. In this utility model, the workpiece is limited by symmetrically arranged shielding plates and workpiece limiting components. During the painting process, phenomena such as missed shielding or incomplete shielding can be avoided, thereby ensuring that over-spraying does not occur and the yield rate is high.
[0017] 2. This utility model, through the waist-shaped hole and limiting protrusion set on the surface of the workpiece limiting part, can ensure the efficiency and quality of painting, and can also play a role in fixing and guiding.
[0018] 3. This utility model achieves sealing and protection through the sealing ring layer and the rubber layer. Attached Figure Description
[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...
[0020] Figure 1 This is a schematic diagram of the overall structure of this embodiment.
[0021] Figure 2 This is a top view of this embodiment.
[0022] Figure 3 This is a schematic diagram of the longitudinal section structure of this embodiment.
[0023] Figure 4 This is a schematic diagram of the shielding plate in this embodiment.
[0024] The labels in the attached diagram are:
[0025] 1. Masking plate; 2. Spraying hole; 3. Workpiece limiting component; 4. Connecting hole; 5. Connecting bolt; 6. Waist-shaped hole; 7. Limiting protrusion; 8. Rubber layer; 9. Sealing ring layer. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the accompanying drawings.
[0027] Reference Figures 1-4 This utility model discloses a masking fixture for painting aerospace parts, comprising a set of masking plates 1 arranged in opposite directions. Several spray holes 2 are evenly distributed on the surface of the masking plates 1. A workpiece limiting member 3 is provided on one side inside the spray holes 2 of the masking plate 1. Several connecting holes 4 are provided on the surface of the masking plates 1, and connecting bolts 5 are installed inside the connecting holes 4. The two masking plates 1 are connected together by the connecting bolts 5. During processing, several workpieces are evenly placed above the workpiece limiting member 3 inside one of the masking plates 1. Then, another masking plate 1 is placed over the masking plate 1 and the workpieces, and the two masking plates 1 are connected and fixed by the connecting bolts 5. Then, one side of the masking plate 1 is sprayed, thereby completing the internal spraying of the workpieces. The masking quality is effectively guaranteed during the spraying process, preventing over-spraying and resulting in a high production rate.
[0028] The workpiece limiting component 3 has a waist-shaped hole 6 in the middle, and limiting protrusions 7 are provided on both sides of the waist-shaped hole 6. The waist-shaped hole 6 facilitates the spraying of paint into the interior of the workpiece. In addition, the limiting protrusions 7 can fix and guide the workpiece to ensure the processing accuracy. A rubber layer 8 is provided on the outside of the workpiece limiting component. The rubber layer 8 can effectively reduce the friction between the workpiece and the workpiece fiber cloth and play a good protective role for the workpiece.
[0029] The spray nozzle 2 is a countersunk hole, which can effectively reduce the obstruction effect that the thickness of the masking plate 1 may cause.
[0030] A sealing ring 9 is provided at the bottom of the masking plate 1. The sealing ring 9 can ensure the sealing between the two masking plates 1 after connection, and prevent paint from entering from the connection between the two masking plates 1 during the spraying process, thus affecting the spraying effect.
[0031] In summary, this tooling is easy to use and simple to install and remove, which can greatly improve production efficiency and pass rate.
[0032] Using this masking fixture, 20 parts can be loaded for painting at once, with a preparation time of only 3 minutes and a disassembly time of 3 minutes after painting, resulting in a total auxiliary time of 0.3 minutes per part. In contrast, the original tape masking method requires about 8 minutes per part and 4 minutes to remove the tape, resulting in a total auxiliary time of 12 minutes per part. This increases production efficiency by 4000%. Since there are no issues such as missed or incomplete masking, there is almost no over-painting, with an over-painting defect rate of 1%, while the original tape masking method has an over-painting defect rate of 10%, reducing the number of defects by 90%.
[0033] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A masking fixture for painting aircraft parts, characterized in that: It includes a set of shielding plates (1) arranged in opposite directions. Several spray holes (2) are evenly opened on the surface of the shielding plate (1). A workpiece limiting member (3) is provided on one side inside the spray hole (2) of the shielding plate (1). Several connecting holes (4) are opened on the surface of the shielding plate (1). A connecting bolt (5) is provided inside the connecting hole (4). Two shielding plates (1) are connected by the connecting bolt (5).
2. The masking fixture for painting aircraft parts according to claim 1, characterized in that: The workpiece limiting member (3) has a waist-shaped hole (6) in the middle, and limiting protrusions (7) are provided on both sides of the waist-shaped hole (6).
3. The masking fixture for painting aircraft parts according to claim 1, characterized in that: The workpiece limiting member (3) has a rubber layer (8) on its outside.
4. The masking fixture for painting aircraft parts according to claim 1, characterized in that: The spray nozzle (2) is a countersunk hole.
5. The masking fixture for painting aircraft parts according to claim 1, characterized in that: The bottom of the shielding plate (1) is provided with a sealing ring (9).