A painting device for a new energy vehicle parts painting production line

Abstract

This utility model relates to the field of automotive parts painting technology, and in particular to a painting device for a new energy vehicle parts painting production line; it includes a closed-loop guide rail assembly with a rounded rectangular layout; several conveying components are uniformly fixed on the guide rail assembly, each conveying component including a turntable, the top of which is used to support the workpiece, and a gear is coaxially fixed to the bottom; a rack frame is fixedly installed at the painting station section of the guide rail assembly, and a rack that meshes with the gear is installed on the rack frame; when the conveying component moves to the painting station with the chain, the gear meshes with the rack to drive the turntable to rotate; a painting robot is installed on the painting station side of the guide rail assembly; this facilitates the rotation of the workpiece during conveying, thereby achieving uniform painting, eliminating the problem of shaking and deviation during the workpiece conveying process, and significantly improving the stability of the painting trajectory.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts painting technology, and in particular to a painting device for a new energy vehicle parts painting production line. Background Technology

[0002] The painting equipment used in the new energy vehicle parts painting production line is mainly used for automated paint spraying operations on the outer surfaces of key components such as brake disc covers, transmission housings, and differential housings during the production line conveying process. Its core function is to uniformly and efficiently spray paint onto the surface of the workpiece through a precisely controlled spray gun system while the workpiece is continuously moving or being conveyed, in order to meet the stringent requirements of new energy vehicle parts for corrosion resistance, appearance quality, and production efficiency.

[0003] However, when painting the exterior of specific workpieces, such as the transmission housing of new energy vehicles, which is typically a conical or near-conical shell with complex curved surfaces and irregular outer surfaces, existing painting equipment has significant shortcomings. The primary deficiency is that existing devices generally lack the function of driving the workpiece to rotate stably during transport. The workpiece can only be passively moved during painting, resulting in a relatively simple spraying path and an inability to achieve comprehensive and uniform coverage of the workpiece's exterior. This deficiency directly leads to uneven paint distribution, especially for conical shells, where recessed areas, edges, and corners are prone to missed areas, thin spraying, or paint film buildup. Secondly, existing conveying mechanisms often suffer from swaying, offset, or insufficient positioning accuracy when carrying such irregularly shaped, unstable workpieces, resulting in an unstable transport process. This instability not only affects the workpiece's positional accuracy but also further interferes with the relative position of the spray gun trajectory and the workpiece surface, compromising the uniformity and consistency of the spray and exacerbating paint film quality issues.

[0004] Therefore, this application provides a painting apparatus for a new energy vehicle parts painting production line to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to provide a painting device for a new energy vehicle parts painting production line, which solves the problems of uneven coating caused by the inability of the workpiece to rotate during transportation when painting the outer wall of a conical shell workpiece by existing painting devices, and the shaking and displacement during transportation, which seriously affects the quality and consistency of the paint film.

[0006] To solve the above-mentioned technical problems, this utility model provides a painting device for a new energy vehicle parts painting production line, including a closed-loop guide rail assembly with a rounded rectangular layout; the guide rail assembly has a cross-shaped cross-section track inside, and a chain is embedded in the cross-shaped cross-section track. Horizontal rollers and vertical rollers are installed at the hinge joints of the chain links. The rollers are adapted to be embedded in the grooves of the cross-shaped cross-section track to constrain the horizontal and vertical displacement of the chain and prevent conveying swaying.

[0007] Several conveying components are evenly fixed on the chain. The conveying components include a turntable, the top of which is used to support the workpiece, and the bottom of which is coaxially fixed with a gear.

[0008] The paint spraying station section of the guide rail assembly is fixedly equipped with a rack frame, on which a rack that meshes with a gear is mounted; when the conveyor assembly moves to the paint spraying station with the chain, the gear meshes with the rack to drive the turntable to rotate;

[0009] A painting robot is installed on the painting station side of the guide rail assembly.

[0010] A further improvement of this utility model is that: a closed spray booth is set around the spraying robot, and the spray booth covers the guide rail assembly of the spraying station section; conveying grooves are opened at the inlet and outlet ends of the spray booth for the conveying assembly to pass through.

[0011] A further improvement of this utility model is that several vertical support frames are provided at the bottom of the guide rail assembly.

[0012] A further improvement of this utility model is that: the chain is made up of multiple chain links hinged together; a sprocket is provided at the rounded corner of the guide rail assembly, and the sprocket meshes with the chain for transmission; the sprocket is connected to the output shaft of the drive motor.

[0013] A further improvement of this utility model is that the diameters of the transverse rollers and longitudinal rollers are equal to the width of the cross-shaped cross-section track, thereby achieving gapless movement.

[0014] A further improvement of the present invention is that the conveying assembly also includes a transverse U-shaped frame set on the chain. The U-shaped frame extends outward from the guide rail and its opening faces inward from the guide rail. One end of the U-shaped frame is fixedly connected to the chain, and a connecting rod is vertically set on the other end. A horizontal turntable is set on the top of the connecting rod through a rotating shaft.

[0015] A further improvement of this utility model is that a pin adapted to the workpiece is vertically set on the top of the turntable, and the pin is used to fix the workpiece.

[0016] A further improvement of this utility model is that the length of the rack is greater than the pitch circle circumference of the gear, ensuring gear meshing drive throughout the painting process.

[0017] A further improvement of this utility model is that a horizontal paint tray is set above the guide rail assembly of the painting station section. The paint tray passes through the U-shaped groove of the U-shaped frame and is located below the workpiece to collect dripping paint mist.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects:

[0019] 1. This utility model provides a painting device for a new energy vehicle parts painting production line. The painting device effectively constrains the horizontal and vertical displacement of the conveying components by setting a cross-shaped cross section track and an embedded cooperation of chain rollers, eliminating the shaking and deviation problem during the workpiece conveying process, significantly improving the stability of the spraying trajectory, and ensuring uniform and consistent paint film thickness.

[0020] 2. The present invention provides a painting device for a new energy vehicle parts painting production line. The painting device uses a forced meshing drive structure of gears and a rack at the painting station to enable the conical shell workpiece to rotate stably during the conveying process, breaking through the limitations of passive translation, achieving all-round, dead-angle-free painting of the outer wall of the workpiece, and completely solving the defects of missed spraying, thin spraying, and paint piling at recessed areas and edges.

[0021] 3. The present invention provides a painting device for a new energy vehicle parts painting production line. The painting device is designed with a rack length greater than the circumference of the gear pitch to ensure that the workpiece is in a uniform rotation state throughout the painting process, avoids interruption of the painting process, and improves the uniformity of coverage on complex curved outer walls.

[0022] 4. The present invention provides a painting device for a new energy vehicle parts painting production line. The painting device integrates a closed painting chamber and a conveying trough, which can achieve automated continuous conveying while effectively isolating paint mist diffusion, improving the working environment and reducing paint waste.

[0023] 5. The present invention provides a painting device for a new energy vehicle parts painting production line. The painting device combines the positioning pin on the top of the turntable with the paint receiving tray below the workpiece, which not only ensures the clamping stability of irregularly shaped workpieces, but also collects dripping paint in real time to prevent contamination of the production line equipment. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1This is a schematic diagram of a painting device used in a new energy vehicle parts painting production line.

[0026] Figure 2 A schematic diagram of a paint spraying device without a spray booth for a paint spraying production line for new energy vehicle parts.

[0027] Figure 3 A schematic diagram of a paint spraying device without a spray booth for a paint spraying production line for new energy vehicle parts.

[0028] Figure 4 This is a partial schematic diagram of a painting device used in a painting production line for new energy vehicle parts.

[0029] Figure 5 This is a partial schematic diagram of a painting device used in a painting production line for new energy vehicle parts.

[0030] Figure 6 A cross-sectional view of a painting apparatus used in a painting production line for new energy vehicle parts.

[0031] Figure 7 for Figure 6 An enlarged schematic diagram of part A in the middle;

[0032] Figure 8 This is a schematic diagram of the structure of the conveying assembly of this utility model;

[0033] Figure 9 This is a schematic diagram of the structure of the conveying assembly of this utility model;

[0034] Figure 10 This is a schematic diagram of the rack frame of this utility model;

[0035] Figure 11 This is a schematic diagram of the structure of the paint tray of this utility model.

[0036] Reference numerals: 1. Guide rail assembly; 11. Cross-shaped cross-section rail; 12. Chain; 13. Chain link; 14. Sprocket; 15. Roller; 16. Slide; 2. Conveying assembly; 21. Turntable; 22. Gear; 23. U-shaped frame; 24. Connecting rod; 25. Pin; 3. Rack frame; 31. Rack; 4. Painting robot; 5. Spray booth; 51. Conveying trough; 6. Support frame; 7. Paint tray; 8. Workpiece. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The present invention will be further explained below with reference to specific embodiments.

[0041] like Figures 1-11 As shown in the figure, this embodiment provides a painting device for a new energy vehicle parts painting production line, including a closed-loop guide rail assembly 1 with a rounded rectangular layout; several vertical support frames 6 are set at the bottom of the guide rail assembly 1 to stably support the entire conveying system; the guide rail assembly 1 has a cross-shaped cross-section track 11 inside, and a chain 12 is embedded in the track. The chain 12 is made up of multiple chain links 13 hinged together to ensure flexible transmission; a sprocket 14 is provided at the rounded corner of the guide rail assembly 1. The sprocket 14 meshes with the chain 12 and is connected to the output shaft of the drive motor to achieve smooth power transmission; a horizontal roller 15 and a vertical roller 15 are installed at the hinge of the chain links 13 of the chain 12. The rollers 15 are tightly fitted into the grooves of the cross-shaped cross-section track 11. Through the bidirectional limiting effect of the horizontal and vertical rollers 15, combined with the gapless fit between the diameter of the rollers 15 and the width of the track, the horizontal swaying and vertical jumping of the chain 12 are effectively suppressed, and the displacement deviation during the conveying process is completely eliminated. The guide rail conveying system forms a high-precision guiding mechanism through the embedded constraints of the cross rail 11 and the bidirectional roller 15, laying the foundation for the stable transmission of workpiece 8.

[0042] like Figure 2 , Figure 8 , Figure 9As shown, in this embodiment, several conveying components 2 are uniformly fixed on the chain 12. Each conveying component 2 includes a turntable 21. The top of the turntable 21 supports the workpiece 8, and the bottom is coaxially connected to a gear 22 to ensure lossless transmission of rotational power. The conveying component 2 also includes a transverse U-shaped frame 23 mounted on the chain 12. The U-shaped frame 23 extends outward from the guide rail and opens inward. Its bottom is rigidly connected to the chain 12 to resist torsional vibration, and its top is supported by a vertical connecting rod 24, forming a cantilevered load-bearing structure. A vertically positioned pin 25 on the top of the turntable 21 is precisely inserted into the positioning hole of the workpiece 8 to prevent the conical shell from shifting during rotational spraying. This workpiece carrying system, relying on the extended layout of the U-shaped frame 23 and the positioning function of the pin 25, achieves stable clamping and rotational freedom of the irregularly shaped workpiece 8 within a limited space, providing physical assurance for uniform spraying.

[0043] like Figures 1-5 , Figure 10 , Figure 11 As shown, in this embodiment, a rack frame 3 is fixedly installed on the painting station section of the guide rail assembly 1, and a rack 31 that meshes with the gear 22 is installed on the rack frame 3. By designing that the length of the rack 31 is greater than the circumference of the gear 22, forced meshing covers the entire painting stroke, driving the turntable 21 to rotate continuously and uniformly. When the conveying assembly 2 enters the painting station, the gear 22 meshes with the rack 31, causing the workpiece 8 to rotate, and simultaneously, the painting robot 4 performs multi-angle spraying. A closed painting chamber 5 is set around the painting robot 4, covering the guide rail of the station section and having inlet / outlet conveying channels 51 to achieve sealed paint mist treatment. A paint receiving tray 7 is set below the painting chamber 5, horizontally traversing the U-shaped groove of the U-shaped frame 23 and located directly below the workpiece 8, to collect dripping paint mist immediately, preventing equipment contamination. This painting drive and recovery system, through the synergistic effect of the forced rotation of the gear 22 and rack 31 and the closed paint mist management, improves the uniformity of outer wall coverage while ensuring environmental cleanliness, forming a highly efficient painting closed loop.

[0044] This utility model also provides the operating principle of a painting device for a new energy vehicle parts painting production line:

[0045] After the workpiece 8 is positioned and installed on the top of the turntable 21 by the pin 25, the closed-loop guide rail assembly 1, driven by the drive motor and sprocket 14, drives the chain 12 to move cyclically along the cross-shaped cross-section track 11. When the conveying assembly 2 moves to the rounded corner section with the chain 12, the horizontal and vertical rollers 15 are seamlessly engaged in the chute to ensure that the workpiece 8 turns smoothly. When the conveying assembly 2 enters the painting station, the gear 22 at the bottom of the turntable 21 is forcibly engaged with the rack 31 on the fixed rack frame 3, driving the workpiece 8 to rotate at a uniform speed. At the same time, the painting robot 4 performs multi-angle spraying on the conical outer wall of the rotating workpiece 8 in the closed painting chamber 5, and the dripping paint mist is collected in real time by the paint receiving tray 7 below. The workpiece 8 that has been painted is moved out of the painting chamber 5 through the conveying chute 51, and the empty conveying assembly 2 continues to circulate to the feeding end to receive new workpieces 8.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A painting device for a new energy vehicle parts painting production line, characterized in that, The guide rail assembly (1) is a closed-loop guide rail assembly with a rounded rectangular layout. The guide rail assembly (1) has a cross-shaped cross-section track (11) inside. A chain (12) is embedded in the cross-shaped cross-section track (11). A horizontal roller (15) and a vertical roller (15) are installed at the hinge of the chain link (12). The roller (15) is adapted to be embedded in the groove of the cross-shaped cross-section track (11) to constrain the horizontal and vertical displacement of the chain (12) and prevent the conveyor from shaking. Several conveying components (2) are evenly fixed on the chain (12). The conveying components (2) include a turntable (21). The top of the turntable (21) is used to carry the workpiece (8), and the bottom is coaxially fixed with a gear (22). A rack frame (3) is fixedly installed on the painting station section of the guide rail assembly (1), and a rack (31) that meshes with the gear (22) is installed on the rack frame (3); when the conveying assembly (2) moves to the painting station with the chain (12), the gear (22) meshes with the rack (31) to drive the turntable (21) to rotate. A painting robot (4) is installed on the painting station side of the guide rail assembly (1).

2. The painting device for a new energy vehicle parts painting production line according to claim 1, characterized in that, The painting robot (4) is surrounded by a closed spray booth (5), which covers the guide rail assembly (1) of the spray booth section; the inlet and outlet of the spray booth (5) are provided with conveying channels (51) for the conveying assembly (2) to pass through.

3. The painting device for a new energy vehicle parts painting production line according to claim 1, characterized in that, The bottom of the guide rail assembly (1) is provided with several vertical support frames (6).

4. The painting device for a new energy vehicle parts painting production line according to claim 1, characterized in that, The chain (12) is made up of multiple chain links (13) hinged together; a sprocket (14) is provided at the rounded corner of the guide rail assembly (1), and the sprocket (14) meshes with the chain (12) for transmission; the sprocket (14) is connected to the output shaft of the drive motor.

5. The painting apparatus for a new energy vehicle parts painting production line according to claim 1, characterized in that, The diameters of the transverse roller (15) and the longitudinal roller (15) are equal to the width of the cross-shaped track (11), enabling gapless movement.

6. The painting device for a new energy vehicle parts painting production line according to claim 1, characterized in that, The conveying assembly (2) also includes a transverse U-shaped frame (23) set on the chain (12). The U-shaped frame (23) extends outward from the guide rail and has an opening facing inward from the guide rail. One end of the U-shaped frame (23) is fixedly connected to the chain (12), and a connecting rod (24) is vertically set on the other end. A horizontal turntable (21) is set on the top of the connecting rod (24) through a rotating shaft.

7. The painting apparatus for a new energy vehicle parts painting production line according to claim 1, characterized in that, A pin (25) for fitting the workpiece (8) is vertically set on the top of the turntable (21). The pin (25) is used to fix the workpiece (8).

8. The painting device for a new energy vehicle parts painting production line according to claim 1, characterized in that, The length of the rack (31) is greater than the pitch circle circumference of the gear (22), ensuring that the gear (22) is engaged and driven throughout the painting process.

9. A painting device for a new energy vehicle parts painting production line according to claim 1, characterized in that, A horizontal paint tray (7) is set above the guide rail assembly (1) of the painting station section. The paint tray (7) runs through the U-shaped groove of the U-shaped frame (23) and is located below the workpiece (8) to collect dripping paint mist.

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