A paint touch-up device for closed corners in riveted assembly of aircraft sections

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By designing a paint touch-up device with adjustable installation position and angle, the problem of uneven and unsightly paint touch-up at closed angles in the riveted assembly of aircraft sections is solved, and uniform and beautiful paint touch-up at the corners of aircraft sections is achieved, thereby improving the convenience and effectiveness of operation.

CN115780203BActive Publication Date: 2025-09-30JIANGXI CHANGXING AVIATION EQUIP

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Patent Information

Application Number: CN202211467400.4
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2022-11-22
Publication Date: 2025-09-30
Estimated Expiration: 2042-11-22

AI Technical Summary

Technical Problem

In the prior art, during the riveting and assembly of aircraft sections, paint scratches at closed corners are difficult to repair, and paint touch-ups with a brush are uneven and unsightly. In addition, the integrated paint spray gun has poor adjustability and cannot effectively complete the paint touch-up operation at corners.

Method used

A device for repainting closed corners in the riveted assembly of aircraft sections was designed. By combining a clamping plate and a connector, the installation position and angle of the injector relative to the air gun duct outlet section were adjusted to achieve uniform repainting at the corners.

Benefits of technology

It achieves uniform and beautiful touch-up painting at the corners of aircraft sections. It is easy to operate and suitable for self-assembly and adjustment at the assembly site, which improves the effect and convenience of touch-up painting.

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Abstract

The invention discloses a device for repainting closed corners in riveted assembly of aircraft sections, comprising an air gun (1), an injector (2), a clamping plate I (3), and a clamping plate II (4). The outer surface of the outlet section of the air gun air duct is mounted with the clamping plate I, the clamping plate II is mounted on the clamping plate I, and the injector is mounted on the clamping plate II. The invention is characterized in that the clamping plate I comprises a first clamping plate (31), a second clamping plate (32), an arc-shaped clamping portion (33), a first connecting hole (34), an avoidance hole (35), a first connecting plate (36), and an adjustment hole (37). The arc-shaped clamping portion is used to match the outer surface of the outlet section. The first connecting plate is provided with an adjustment hole, and the adjustment hole is used to adjust the installation position and installation angle of the injector relative to the outlet section of the air gun air duct. The invention can repaint the corners / closed corners of the aircraft sections at the assembly site. The repainted surface is uniform and beautiful. The operation is simple, convenient and practical. The device can be assembled and adjusted by the user at the assembly site.

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Description

Technical Field

[0001] The invention relates to the technical field of aircraft section riveting assembly technology, and in particular to a paint touch-up device for closed corners in aircraft section riveting assembly. Background Art

[0002] During the riveting and assembly process of aircraft sections, the paint on the surface of the parts is often damaged. The damaged paint needs to be touched up in time, usually with a brush or an integrated paint spray gun. The paint touch-up with a brush is not uniform and the surface appearance of the painted parts is not beautiful. In addition, it is inconvenient to operate at the closed corners of some parts and the brush cannot reach in, making it impossible to complete the touch-up operation. Although the paint is evenly sprayed with an integrated paint spray gun, the installation position and installation angle of the paint spray hole relative to the air jet hole cannot be easily adjusted, and its applicability to the touch-up operation at the assembly site and corners is poor. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a paint touch-up device for closed corners in the riveted assembly of aircraft sections. The device can adjust the installation position and installation angle of the injector relative to the air duct outlet section of the air gun, and can perform on-site paint touch-up on the corners / closed corners of the aircraft section. The paint touch-up surface is uniform and beautiful, the operation is simple, convenient and practical, and the device can be assembled and adjusted for use at the assembly site.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A device for repainting closed angles in riveted assembly of aircraft sections, comprising an air gun (1), an injector (2), a clamping plate I (3), a clamping plate II (4), and a connector (5). The outer surface of the outlet section of the air duct of the air gun is provided with a clamping plate I, which is approximately perpendicular to the outlet section. A clamping plate II is provided on the clamping plate I, which is approximately perpendicular to the clamping plate I. A syringe is provided on the clamping plate II, which is approximately perpendicular to the clamping plate II. The connector comprises bolts and nuts. The device is characterized in that: the clamping plate I (3) comprises a first clamping plate (31), a second clamping plate (32), an arc-shaped clamping portion (33), a first connecting hole (34), An avoidance hole (35), a first connecting plate (36), and an adjustment hole (37), the first clamping plate is parallel to the second clamping plate, and the first clamping plate and the second clamping plate are respectively provided with an arc-shaped clamping portion and a first connecting hole, the arc-shaped clamping portion is used to match the outer surface of the outlet section, the first bolt is connected to the first connecting hole and is fastened with a nut, the upper end of the first clamping plate is provided with an avoidance hole and a first connecting plate, the first connecting plate is perpendicular to the first clamping plate, the avoidance hole is provided between the first connecting plate and an arc-shaped clamping portion, the first connecting plate is provided with an adjustment hole, the adjustment hole is used to adjust the installation position and installation angle of the syringe relative to the air gun air duct outlet section.

[0006] Furthermore, the clamping plate II (4) includes a third clamping plate (41), a fourth clamping plate (42), a circular clamping portion (43), a second connecting hole (44), a second connecting plate (45), and a third connecting hole (46). The third clamping plate and the fourth clamping plate are arranged in parallel and a circular clamping portion is arranged between them. The circular clamping portion is used to match the outer surface of the syringe. The third clamping plate and the fourth clamping plate are respectively provided with a second connecting hole. The second bolt is connected to the second connecting hole and is fastened with a nut. The other end of the third clamping plate is provided with a second connecting plate. The second connecting plate is perpendicular to the third clamping plate. The second connecting plate is provided with a third connecting hole. The third bolt is connected to the third connecting hole and the adjustment hole and is fastened with a nut to connect the second connecting plate to the first connecting plate.

[0007] Furthermore, the adjustment hole (37) is an elongated hole, and the avoidance hole (35) is an elongated hole. The adjustment hole is used to adjust the installation position and installation angle of the injection needle of the syringe relative to the outlet section of the air gun air duct, and the avoidance hole is used to avoid the third clamping plate when adjusting the installation angle; the installation position is the position where the syringe (2) moves along the adjustment hole (37), and the installation angle is the angle of rotation of the syringe relative to the axis of the third bolt.

[0008] Furthermore, the air gun (1) comprises a gun body (11), a handle (12), a first air duct (13), and a second air duct (14), wherein the outlet section is provided on the second air duct, and the angle between the second air duct and the first air duct is an obtuse angle; the syringe (2) comprises a piston rod (21) and an injection needle (22), wherein the piston rod is installed in the syringe barrel of the syringe, and the injection needle is installed at the outlet end of the syringe barrel, and the outlet hole of the injection needle is arranged adjacent to the outlet hole of the second air duct.

[0009] Furthermore, when in use, the prepared paint is sucked into the syringe (2), the installation position and installation angle of the syringe (2) relative to the second air duct (14) are adjusted, and the injection needle (22) of the syringe is aligned with the corner or closed angle where the paint needs to be touched up. The paint can be touched up by holding the air gun (1) with one hand and pressing the syringe with the other hand. At the same time, the syringe and air gun switches can be pressed, and the wind speed and wind pressure can be adjusted by the air gun switch to touch up the paint.

[0010] The device for repainting closed corners during riveted assembly of aircraft sections of the present invention can adjust the installation position and installation angle of the injector relative to the air duct outlet section of the air gun, and can perform on-site repainting of the corners / closed corners of the aircraft sections. The repainted surface is uniform and beautiful, and the device is easy to operate, convenient and practical, and can be assembled and adjusted for use at the assembly site. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the structure of the paint touch-up device at closed angles in the riveted assembly of aircraft sections according to the present invention;

[0012] Figure 2 Schematic diagram of the structure of the paint touch-up device at closed angles in the riveted assembly of aircraft sections according to the present invention;

[0013] Figure 3 Schematic diagram of the structure of the paint touch-up device at closed angles in the riveted assembly of aircraft sections according to the present invention;

[0014] Figure 4 This is a schematic structural diagram of the clamping plate I of the present invention;

[0015] Figure 5 This is a structural schematic diagram of the clamping plate II of the present invention.

[0016] In the figure: air gun 1, syringe 2, clamping plate I3, clamping plate II4, connecting piece 5, gun body 11, handle 12, first air duct 13, second air duct 14, piston rod 21, injection needle 22, first clamping plate 31, second clamping plate 32, arc-shaped clamping portion 33, first connecting hole 34, avoidance hole 35, first connecting plate 36, adjustment hole 37, third clamping plate 41, fourth clamping plate 42, circular clamping portion 43, second connecting hole 44, second connecting plate 45, third connecting hole 46. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] The present invention will be described in further detail below with reference to the accompanying drawings.

[0019] like Figure 1-5As shown, a device for repainting closed angles in riveted assembly of aircraft sections comprises an air gun 1, an injector 2, a clamping plate I3, a clamping plate II4, and a connector 5. The outer surface of the outlet section of the air duct of the air gun 1 is mounted with a clamping plate I3, which is approximately perpendicular to the outlet section. A clamping plate II4 is mounted on the clamping plate I3, which is approximately perpendicular to the clamping plate I3. A syringe 2 is mounted on the clamping plate II4, which is approximately perpendicular to the clamping plate II4. The connector 5 comprises bolts and nuts, and is characterized in that: the clamping plate I3 comprises a first clamping plate 31, a second clamping plate 32, an arc-shaped clamping portion 33, a first connecting hole 34, an avoidance hole 35, a first connecting plate 36, and an adjustment hole 37. The first clamping plate 31 is parallel to the second clamping plate 32, and the first clamping plate 31 and the second clamping plate 32 are respectively provided with an arc-shaped clamping portion 33 and a first connecting hole 34, the arc-shaped clamping portion 33 is used to match the outer surface of the outlet section, the first bolt is connected to the first connecting hole 34 and fastened with a nut, the upper end of the first clamping plate 31 is provided with an avoidance hole 35 and a first connecting plate 36, the first connecting plate 36 is perpendicular to the first clamping plate 31, the avoidance hole 35 is provided between the first connecting plate 36 and an arc-shaped clamping portion 33, and the first connecting plate 36 is provided with an adjustment hole 37, the adjustment hole 37 is used to adjust the installation position and installation angle of the syringe 2 relative to the air duct outlet section of the air gun 1.

[0020] Furthermore, the clamping plate II 4 includes a third clamping plate 41, a fourth clamping plate 42, a circular clamping portion 43, a second connecting hole 44, a second connecting plate 45, and a third connecting hole 46. The third clamping plate 41 and the fourth clamping plate 42 are arranged in parallel and a circular clamping portion 43 is arranged between them. The circular clamping portion 43 is used to match the outer surface of the syringe 2. The third clamping plate 41 and the fourth clamping plate 42 are respectively provided with a second connecting hole 44. The second bolt is connected to the second connecting hole 44 and is fastened with a nut. The other end of the third clamping plate 41 is provided with a second connecting plate 45. The second connecting plate 45 is perpendicular to the third clamping plate 41. The second connecting plate 45 is provided with a third connecting hole 46. The third bolt is connected to the third connecting hole 46 and the adjustment hole 37 and is fastened with a nut to connect the second connecting plate 45 to the first connecting plate 36.

[0021] Furthermore, the adjustment hole 37 is an elongated hole, and the avoidance hole 35 is an elongated hole. The adjustment hole 37 is used to adjust the installation position and installation angle of the injection needle 22 of the syringe 2 relative to the outlet section of the air duct of the air gun 1. The avoidance hole 35 is used to avoid the third clamping plate 41 when adjusting the installation angle. The installation position is the position of the syringe 2 along the adjustment hole 37, and the installation angle is the angle of rotation of the syringe 2 relative to the axis of the third bolt.

[0022] The air gun 1 includes a gun body 11 , a handle 12 , a first air duct 13 , and a second air duct 14 . The second air duct 14 is provided with the outlet section. The angle between the second air duct 14 and the first air duct 13 is an obtuse angle.

[0023] The syringe 2 includes a piston rod 21 and an injection needle 22. The piston rod 21 is installed in the syringe barrel of the syringe 2, and the injection needle 22 is installed at the outlet end of the syringe barrel. The outlet hole of the injection needle 22 is arranged adjacent to the outlet hole of the second air duct 14. The syringe 2 is arranged roughly vertically relative to the second air duct 14.

[0024] When in use, the prepared paint is sucked into the syringe 2, and the injection needle 22 of the syringe is aimed at the position where the paint needs to be touched up or the corner / closed angle (the installation position and installation angle of the syringe 2 relative to the second air duct 14 can be adjusted). Hold the air gun 1 with one hand and press the syringe 2 with the other hand to touch up the paint. Press the switches of the syringe 2 and the air gun 1 at the same time, and the wind speed and wind pressure can be adjusted through the air gun switch to touch up the paint.

[0025] The present invention provides a device for repainting closed corners during riveted assembly of aircraft sections. The device can adjust the installation position and installation angle of an injector 2 relative to the air duct outlet section of an air gun 1, and can perform on-site repainting of corners / closed corners of aircraft sections. The repainted surface is uniform and beautiful, and the device is easy to operate, convenient and practical. The device can be assembled and adjusted for use at the assembly site.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The "connection" mentioned above can be a direct connection or an indirect connection, and the "setting", "setting at", and "setting at" can be directly set at or indirectly set at.

[0027] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for repainting closed angles in riveted assembly of aircraft sections, comprising an air gun (1), an injector (2), a clamping plate I (3), a clamping plate II (4), and a connector (5), wherein the outer surface of the outlet section of the air duct of the air gun is provided with a clamping plate I, which is substantially perpendicular to the outlet section, a clamping plate II is provided on the clamping plate I, which is substantially perpendicular to the clamping plate I, an injector is provided on the clamping plate II, which is substantially perpendicular to the clamping plate II, and the connector comprises a bolt and a nut, characterized in that: The clamping plate I (3) includes a first clamping plate (31), a second clamping plate (32), an arc-shaped clamping portion (33), a first connecting hole (34), an avoidance hole (35), a first connecting plate (36), and an adjustment hole (37). The first clamping plate is parallel to the second clamping plate, and the first clamping plate and the second clamping plate are respectively provided with an arc-shaped clamping portion and a first connecting hole. The arc-shaped clamping portion is used to match the outer surface of the outlet section. The first bolt is connected to the first connecting hole and is fastened with a nut. The upper end of the first clamping plate is provided with an avoidance hole and a first connecting plate. The first connecting plate is perpendicular to the first clamping plate. The avoidance hole is provided between the first connecting plate and an arc-shaped clamping portion. The first connecting plate is provided with an adjustment hole. The adjustment hole is used to adjust the installation position and installation angle of the syringe relative to the outlet section of the air gun air duct. The clamping plate II (4) includes a third clamping plate (41), a fourth clamping plate (42), a circular clamping portion (43), a second connecting hole (44), a second connecting plate (45), and a third connecting hole (46). The third clamping plate and the fourth clamping plate are arranged in parallel and a circular clamping portion is arranged between them. The circular clamping portion is used to match the outer surface of the syringe. The third clamping plate and the fourth clamping plate are respectively provided with a second connecting hole. The second bolt is connected to the second connecting hole and is fastened with a nut. The other end of the third clamping plate is provided with a second connecting plate. The second connecting plate is perpendicular to the third clamping plate. The second connecting plate is provided with a third connecting hole. The third bolt is connected to the third connecting hole and the adjustment hole and is fastened with a nut to connect the second connecting plate and the first connecting plate together.

2. A paint touch-up device for closed corners in riveted assembly of aircraft sections according to claim 1, characterized in that: The adjustment hole (37) is an elongated hole, and the avoidance hole (35) is an elongated hole. The adjustment hole is used to adjust the installation position and installation angle of the injection needle of the syringe relative to the outlet section of the air gun air duct, and the avoidance hole is used to avoid the third clamping plate when adjusting the installation angle; the installation position is the position where the syringe (2) moves along the adjustment hole (37), and the installation angle is the angle of rotation of the syringe relative to the axis of the third bolt.

3. A paint touch-up device for closed corners in riveted assembly of aircraft sections according to claim 2, characterized in that: The air gun (1) comprises a gun body (11), a handle (12), a first air duct (13), and a second air duct (14). The second air duct is provided with the outlet section, and the angle between the second air duct and the first air duct is an obtuse angle. The syringe (2) comprises a piston rod (21) and an injection needle (22). The piston rod is installed in the syringe barrel of the syringe, and the injection needle is installed at the outlet end of the syringe barrel. The outlet hole of the injection needle is arranged adjacent to the outlet hole of the second air duct, and the syringe is arranged approximately vertically relative to the second air duct.

4. A paint touch-up device for closed corners in riveted assembly of aircraft sections according to claim 3, characterized in that: When in use, the prepared paint is sucked into the syringe (2), the installation position and installation angle of the syringe (2) relative to the second air duct (14) are adjusted, and the injection needle (22) of the syringe is aligned with the corner or closed angle where the paint needs to be touched up. The paint can be touched up by holding the air gun (1) with one hand and pressing the syringe with the other hand. At the same time, the syringe and air gun switches can be pressed to adjust the wind speed and wind pressure to touch up the paint.