A full-automatic automobile trim panel uniform paint spraying device

Abstract

This utility model discloses a fully automatic automotive trim panel uniform spraying device, relating to the field of spraying technology. It includes a gun body, a clamp, and a gun head arranged sequentially along the spraying direction. The gun head has multiple spray nozzles at its center and outward-sloping air curtain nozzles at both ends. One end of the clamp is fixedly connected to the gun head, and the other end is rotatably connected to the gun body, allowing the gun head to rotate around a horizontal axis. The gun body has a connected spraying air channel and an air curtain air channel. Compressed air moves synchronously in two paths: one path pushes paint through the spraying air channel to atomize and spray it from the spray nozzles, and the other path is diverted through the air curtain air channel to the rotating air outlet and the air curtain nozzle. The airflow from the rotating air outlet drives the gun head to rotate, causing the air curtain nozzle to form a ring-shaped air curtain surrounding the spraying area, effectively blocking external dust pollution. During dynamic rotation, it achieves the dual functions of uniform paint mist coverage and dust isolation, avoiding the problem of rough trim panel surface caused by impurities adhering to the spraying environment.

Description

Technical Field

[0001] This utility model relates to the field of spray painting technology, specifically to a fully automatic automotive trim panel uniform spray painting device. Background Technology

[0002] In the invention patent application CN118594840A, published on September 6, 2024, entitled "A Painting Device for Automotive Interior Panels," this invention discloses a painting device for automotive interior panels, belonging to the field of painting technology. The key technical point is that the painting device for automotive interior panels includes a ring conveying mechanism, a loading and unloading mechanism, a dust removal mechanism, a primer spraying mechanism, a topcoat spraying mechanism, a clear coat spraying mechanism, and a drying mechanism arranged sequentially along the conveying direction of the ring conveying mechanism; the ring conveying mechanism includes several brackets for fixing the automotive interior panels; the loading and unloading mechanism includes... The system includes a belt conveyor for feeding and feeding the automotive interior panels, a transfer rack for transferring the automotive interior panels, and a three-axis drive for driving the transfer rack; the dust removal mechanism includes a dust removal chamber and a fan located in the dust removal chamber; the primer spraying mechanism includes a first spray booth, a primer spray head located in the first spray booth, a first inspection mechanism, and a first touch-up spray head; the topcoat spraying mechanism includes a second spray booth, a topcoat spray head located in the second spray booth, a second inspection mechanism, a second touch-up spray head, a third inspection mechanism, and a defective product screening mechanism; and the clear coat spraying mechanism includes a third spray booth and a clear coat spray head located in the second spray booth. The advantages are as follows: The painting apparatus and method for automotive interior panels of this application include a first detection mechanism and a first touch-up nozzle in the primer spraying mechanism. After the primer nozzle completes the primer spraying on the automotive interior panel, the first detection mechanism detects the quality of the primer on the surface of the automotive interior panel. If it is found that some areas on the surface of the automotive interior panel have insufficient paint, the first touch-up nozzle performs touch-up painting. This selective touch-up painting can greatly reduce the amount of paint used. In the topcoat spraying mechanism, a second detection mechanism and a second touch-up nozzle are provided. After the topcoat nozzle completes the topcoat spraying on the automotive interior panel, the second detection mechanism... The testing agency inspected the paint quality of automotive interior panels. When it discovered that some areas of the interior panels had insufficient paint coverage, it used a second touch-up nozzle to selectively touch up the paint, which significantly reduced the amount of paint used. Compared to the traditional method of applying multiple layers of primer, this method simplifies the process and improves efficiency. Furthermore, a third inspection agency and a defective product screening agency were added. The third inspection agency can detect color differences and the presence of particles in the paint, while the defective product screening agency directly filters out substandard products, allowing them to skip the clear coat application process and reducing the amount of clear coat used.

[0003] In the aforementioned patents or prior art, one end of the fully automatic paint spray gun is connected to compressed air and is connected to a pressure tank storing paint via a hose. The paint is sprayed out from the nozzle of the fully automatic paint spray gun under the action of the compressed air. However, when the painting environment is not clean enough, dust particles in the air fall on the undried paint surface, causing the surface of the panel to be rough or uneven, ultimately resulting in uneven painting of the lining and affecting the painting effect. Utility Model Content

[0004] The purpose of this invention is to provide a fully automatic automotive trim panel uniform spraying device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic automotive trim panel uniform spraying device, comprising: a gun body, a clamp, and a gun head arranged sequentially along the spraying direction;

[0006] The nozzle has multiple spray nozzles at the center, and air curtains that are inclined away from the spray nozzles are set at the top and bottom of the nozzle.

[0007] One end of the chuck is fixedly connected to the gun head, and the other end of the chuck is rotatably connected to the gun body. The inner wall of the chuck is connected to the outer wall of the gun head and the outer wall of the gun body respectively, so that the gun head can rotate around its own horizontal axis.

[0008] The gun body has a paint spraying air channel and an air curtain air channel inside. The paint spraying air channel is horizontally set inside the gun body. Compressed air enters the paint spraying air channel and the air curtain air channel in sequence in the gun body. The compressed air pushes the paint out of the paint spraying nozzle in the paint spraying air channel. The compressed air moves in the air curtain air channel and is finally ejected from the self-rotating air outlet and the air curtain air outlet. The compressed air ejected from the self-rotating air outlet can push the chuck and the gun head to rotate together around its own horizontal axis. The compressed air ejected from the air curtain air outlet enters the gun head and is finally ejected from the air curtain outlet. The rotating gun head makes the compressed air ejected from the air curtain outlet form a ring-shaped air curtain, which can isolate dust and impurities in the air and make the painting effect more uniform.

[0009] Furthermore, compressed air passes sequentially from inside the paint spraying air duct through the air curtain inlet and the loading port, and finally exits from the paint spraying air outlet. The air curtain inlet is located at the upper end of the paint spraying air duct, and the loading port is located at the lower end of the paint spraying air duct. The air curtain inlet does not obstruct the compressed air from forming a negative pressure at the loading port, thereby driving the paint to be sprayed out.

[0010] Furthermore, a paint spray tube is installed between the gun body and the gun head. The paint spray tube is embedded inside the gun body and has a through hole that runs through its own horizontal axis. The through hole inside the paint spray tube is tapered. The first end of the paint spray tube coincides with the paint spray air outlet, and the last end of the paint spray tube is a nozzle that is rotatably connected to the gun head. Multiple air inlets and multiple air outlets are distributed on the body of the paint spray tube. Each air inlet corresponds to a corresponding air outlet, and there is a gas channel between each pair of air inlets and air outlets that allows compressed gas to pass through. Each air inlet is connected to the air curtain outlet. Compressed air exits the paint spray tube from the air curtain outlet, passing through the air inlets and air outlets in sequence.

[0011] Furthermore, hollow air curtain cavities are provided at the upper and lower ends of the gun head. One end of the air curtain cavity is connected to the air outlet of the tube body, and the other end of the air curtain cavity is connected to the air curtain opening. The air curtain opening is inclined towards the horizontal axis away from the gun head.

[0012] Furthermore, multiple through-hole rotating air vents are provided on the outer wall of the end of the gun body near the gun head. The multiple rotating air vents are arranged in a ring on the same vertical plane. The rotating air vents are set at an angle and are connected to the air vent of the tube body.

[0013] Furthermore, the inner wall of the chuck is provided with multiple arc-shaped plates, which are arranged in a ring on the same vertical plane. The arc-shaped plates are inclined and in contact with the self-rotating air outlet. When compressed air is sprayed from the inclined self-rotating air outlet onto the inclined arc-shaped plates, the chuck can rotate around its own horizontal axis.

[0014] Furthermore, a hollow cavity is provided at the end of the gun head facing the gun body. One end of the cavity is rotatably connected to the nozzle, and the other end of the cavity is fixedly connected to the gun head. The cavity is connected to the paint spray nozzle, and a filter screen is installed inside the cavity.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the fully automatic automotive trim panel uniform spraying device is reasonable and has the following advantages:

[0016] (1) This technical solution sets up a spraying air channel and an air curtain air channel inside the electric spray gun. After the compressed air enters the electric spray gun, part of the compressed air enters the air curtain air channel from the spraying air channel. This allows the compressed air to spray multiple streams of air at an angle at the air curtain opening in the air curtain air channel at the moment the spraying air channel completes the spraying. This prevents dust in the air from being carried by the paint and sprayed onto the car trim panel, resulting in a rough or uneven surface of the car trim panel, which ultimately leads to uneven spraying. Part of the compressed air will be sprayed out from the self-rotating air outlet in the spraying air channel. The gas sprayed out from the self-rotating air outlet can push the spray gun head to rotate at the moment of spraying, which ultimately makes the multiple streams of air sprayed out from the air curtain opening into an annular air curtain, which fully isolates dust and impurities in the outside air and completes uniform spraying.

[0017] (2) The technical solution is to set a cavity at the nozzle of the electric spray gun that can hold the paint. The cavity is equipped with a filter screen. The compressed air and solid impurities in the paint will be blocked by the filter screen, preventing solid impurities from blocking the spray nozzle and avoiding the phenomenon of being unable to spray paint or uneven spraying due to the blockage of the spray nozzle. When the compressed air pushes the chuck to rotate, the cavity rotates synchronously with the nozzle. The paint inside the cavity rotates continuously and is continuously filtered by the filter screen. While maintaining the fluidity of the paint, it can improve the atomization degree of the paint spraying, so that the paint sprayed from the nozzle onto the car panel is more uniform. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the gun body in this utility model;

[0020] Figure 3 In this utility model Figure 1 A cross-sectional structural diagram;

[0021] Figure 4 In this utility model Figure 3 A frontal view of the structural diagram;

[0022] Figure 5 This is a three-dimensional structural diagram of the paint spray pipe in this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the gun head in this utility model;

[0024] Figure 7 This is a cross-sectional structural diagram of the gun head in this utility model;

[0025] Figure 8 This is a three-dimensional structural diagram of the gripper in this utility model;

[0026] In the diagram: 1. Gun body; 11. Feed port; 12. Spray air duct; 121. Spray air outlet; 13. Air curtain air duct; 131. Air curtain inlet; 132. Air curtain outlet; 133. Rotation outlet; 2. Gun head; 21. Air curtain inlet; 22. Spray nozzle; 23. Cavity; 24. Filter screen; 25. Air curtain cavity; 3. Clamp; 31. Curved plate; 4. Spray tube; 41. Nozzle; 42. Tube inlet; 43. Tube outlet. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-8 The present invention provides a technical solution as follows:

[0029] Example 1:

[0030] A fully automatic automotive trim panel uniform spraying device includes: a gun body 1, a clamp 3 and a gun head 2 arranged sequentially along the spraying direction;

[0031] The gun head 2 has multiple paint spray nozzles 22 at its center, and air curtain nozzles 21 that are inclined away from the paint spray nozzles 22 are respectively provided at the upper and lower ends of the gun head 2.

[0032] One end of the chuck 3 is fixedly connected to the gun head 2, and the other end of the chuck 3 is rotatably connected to the gun body 1. The inner wall of the chuck 3 is connected to the outer wall of the gun head 2 and the outer wall of the gun body 1 respectively, so that the gun head 2 can rotate around its own horizontal axis.

[0033] The gun body 1 is equipped with a paint spraying air channel 12 and an air curtain air channel 13. The paint spraying air channel 12 is horizontally set inside the gun body 1. Compressed air enters the paint spraying air channel 12 and the air curtain air channel 13 in sequence in the gun body 1. The compressed air pushes the paint out of the paint spraying nozzle 22 in the paint spraying air channel 12. The compressed air moves in the air curtain air channel 13 and is finally ejected from the self-rotating air outlet 133 and the air curtain air outlet 132. The compressed air ejected from the self-rotating air outlet 133 can push the chuck 3 and the gun head 2 to rotate together around their own horizontal axis. The compressed air ejected from the air curtain air outlet 132 enters the gun head 2 and is finally ejected from the air curtain outlet 21. The rotating gun head 2 makes the compressed air ejected from the air curtain outlet 21 form an annular air curtain, which can isolate dust and impurities in the air and make the painting effect more uniform.

[0034] Compressed air passes sequentially from inside the paint spraying air passage 12 through the air curtain inlet 131 and the loading port 11, and is finally ejected from the paint spraying air outlet 121. The air curtain inlet 131 is located at the upper end of the paint spraying air passage 12, and the loading port 11 is located at the lower end of the paint spraying air passage 12. The air curtain inlet 131 does not obstruct the negative pressure formed by the compressed air at the loading port 11, thereby driving the paint to be sprayed out.

[0035] A paint spray tube 4 is also provided between the gun body 1 and the gun head 2. The paint spray tube 4 is embedded inside the gun body 1. The paint spray tube 4 has a through hole that runs through its own horizontal axis. The through hole inside the paint spray tube 4 is tapered. The first end of the paint spray tube 4 coincides with the paint spray outlet 121. The end of the paint spray tube 4 is a nozzle 41 and is rotatably connected to the gun head 2. Multiple tube body air inlets 42 and multiple tube body air outlets 43 are distributed on the tube body of the paint spray tube 4. Each tube body air inlet 42 corresponds to a tube body air outlet 43, and there is a gas channel between each pair of tube body air inlets 42 and tube body air outlets 43 that allows compressed gas to pass through. Each tube body air inlet 42 is connected to the air curtain outlet 132. Compressed air leaves the paint spray tube 4 from the air curtain outlet 132, passing through the tube body air inlet 42 and the tube body air outlet 43 in sequence.

[0036] Hollow air curtain cavities 25 are provided at the upper and lower ends of the gun head 2. One end of the air curtain cavity 25 is connected to the air outlet 43 of the tube body, and the other end of the air curtain cavity 25 is connected to the air curtain opening 21. The air curtain opening 21 is inclined toward the horizontal axis away from the gun head 2.

[0037] Multiple through-holes 133 are provided on the outer wall of the gun body 1 near the gun head 2. The multiple through-holes 133 are arranged in a ring on the same vertical plane. The through-holes 133 are inclined and are connected to the air outlet 43 of the tube body.

[0038] Multiple arc-shaped plates 31 are provided on the inner wall of the chuck 3. The multiple arc-shaped plates 31 are arranged in a ring on the same vertical plane. The arc-shaped plates 31 are inclined and contact the self-rotating air outlet 133. When compressed air is sprayed from the inclined self-rotating air outlet 133 to the inclined arc-shaped plates 31, the chuck 3 can rotate around its own horizontal axis.

[0039] A hollow cavity 23 is provided at the end of the gun head 2 facing the gun body 1. One end of the cavity 23 is rotatably connected to the nozzle 41, and the other end of the cavity 23 is fixedly connected to the gun head 2. The cavity 23 is connected to the paint spray nozzle 22, and a filter screen 24 is provided inside the cavity 23.

[0040] Working Principle: When in use, the fully automatic spray gun is connected to a pressure tank storing paint and an air compressor via hoses. Compressed air generated by the air compressor enters the spray air passage 12 of the fully automatic spray gun. As the compressed air moves within the spray air passage 12, some of it first enters the air curtain passage 13 from the air curtain inlet 131 at the top of the spray air passage 12. The compressed air moves within the air curtain passage 13 and eventually exits from the air curtain outlet 132, entering the gap between the spray tube 4 and the gun body 1. The compressed air then enters the tube inlet 42 of the spray tube 4 from the gap between the spray tube 4 and the gun body 1. The compressed air eventually leaves the jet pipe from the air outlet 43 and enters the gap between the gun head 2 and the gun body 1. The gun body 1 is provided with multiple inclined rotating air outlets 133 at the end near the gun head 2. Multiple inclined arc plates 31 are provided on the inner wall of the clamp 3. The rotating air outlets 133 and the arc plates 31 are opposite each other. The clamp 3 is rotatably connected to the gun body 1. The compressed air is sprayed from the rotating air outlets 133 onto the arc plates 31 in the gap between the gun head 2 and the gun body 1, and finally drives the arc plates 31 to rotate around their own horizontal axis. The gun head 2 is fixedly connected to the clamp 3, and the gun head 2 also rotates around its own horizontal axis along with the clamp 3.

[0041] Hollow air curtain cavities 25 are provided at both ends of the gun head 2. One end of the air curtain cavity 25 is connected to the gap between the gun head 2 and the gun body 1, and the other end of the air curtain cavity 25 is connected to the inclined air curtain opening 21. Compressed air can move from the air curtain cavity 25 to the air curtain opening 21 in the gap between the gun head 2 and the gun body 1. The air curtain opening 21 is inclined away from the horizontal axis of the gun head 2. The compressed air is finally ejected from the air curtain opening 21. When the gun head 2 follows the clamp 3 to rotate around its own horizontal axis, the compressed air ejected from the air curtain opening 21 forms an annular air curtain, which blocks the dust in the air from affecting the paint spraying, making the paint spraying more uniform.

[0042] Compressed air passes sequentially through the air curtain inlet 131 and the loading port 11 in the paint spraying air passage 12. The compressed air creates a negative pressure at the loading port 11, drawing the paint into the paint spraying air passage 12. The compressed air, carrying the paint, enters the tapered paint spraying tube 4 from the paint spraying outlet 121. The paint enters the cavity 23 at one end of the gun head 2 through the nozzle 41 at the other end of the paint spraying tube 4. A filter screen 24 is installed inside the cavity 23. The gun head 2 is rotatably connected to the nozzle 41. The other end of the cavity 23 is connected to the air jet outlet. When the gun head 2 rotates around its horizontal axis, the paint rotates in the cavity 23 and is continuously filtered by the filter screen 24 to prevent the paint from clumping. The tapered air jet increases the pressure of the compressed air at the nozzle 41, which can spray the paint inside the cavity 23 out of the paint spraying port 22.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fully automatic automotive trim panel uniform spraying device, characterized in that, include: The gun body (1), clamp (3) and gun head (2) are arranged sequentially along the spraying direction; The gun head (2) has multiple paint spray nozzles (22) at its center, and the upper and lower ends of the gun head (2) are respectively provided with air curtain nozzles (21) that are inclined away from the paint spray nozzles (22). One end of the clamp (3) is fixedly connected to the gun head (2), and the other end of the clamp (3) is rotatably connected to the gun body (1). The inner wall of the clamp (3) is connected to the outer wall of the gun head (2) and the outer wall of the gun body (1) respectively, so that the gun head (2) can rotate around its own horizontal axis. The gun body (1) is provided with a paint spraying air passage (12) and an air curtain air passage (13) inside. The paint spraying air passage (12) is horizontally arranged inside the gun body (1). Compressed air enters the paint spraying air passage (12) and the air curtain air passage (13) in sequence in the gun body (1). The compressed air pushes the paint out of the paint spray nozzle (22) in the paint spraying air passage (12). The compressed air moves in the air curtain air passage (13) and finally exits from the rotating air outlet (133) and the air curtain. The compressed air ejected from the air outlet (132) can drive the chuck (3) and the gun head (2) to rotate together around their own horizontal axis. The compressed air ejected from the air curtain outlet (132) enters the gun head (2) and finally ejects from the air curtain outlet (21). The rotating gun head (2) causes the compressed air ejected from the air curtain outlet (21) to form an annular air curtain, which can isolate dust and impurities in the air and make the painting effect more uniform. The gun head (2) has a hollow cavity (23) at one end facing the gun body (1). One end of the cavity (23) is rotatably connected to the nozzle (41), and the other end of the cavity (23) is fixedly connected to the gun head (2). The cavity (23) is connected to the paint spray nozzle (22), and a filter screen (24) is provided inside the cavity (23).

2. The fully automatic automotive trim panel uniform spraying device according to claim 1, characterized in that, Compressed air passes through the air curtain inlet (131) and the loading port (11) sequentially from the inside of the paint spraying air passage (12) and finally exits from the paint spraying air outlet (121). The air curtain inlet (131) is located at the upper end of the paint spraying air passage (12), and the loading port (11) is located at the lower end of the paint spraying air passage (12). The air curtain inlet (131) does not obstruct the compressed air from forming a negative pressure at the loading port (11) to drive the paint to be sprayed out.

3. The fully automatic automotive trim panel uniform spraying device according to claim 2, characterized in that, A paint spray tube (4) is also provided between the gun body (1) and the gun head (2). The paint spray tube (4) is fitted inside the gun body (1). The paint spray tube (4) has a through hole that passes through its own horizontal axis. The through hole inside the paint spray tube (4) is tapered. The first end of the paint spray tube (4) coincides with the paint spray outlet (121). The end of the paint spray tube (4) is a nozzle (41) and is rotatably connected to the gun head (2). Multiple air inlets (42) are distributed on the body of the paint spray tube (4). The spray pipe (4) has multiple air outlets (43), each air inlet (42) of the spray pipe corresponds to one air outlet (43), and there is a gas channel between each pair of air inlets (42) and air outlets (43) that allows compressed gas to pass through. Each air inlet (42) of the spray pipe is connected to the air curtain outlet (132). Compressed air leaves the spray pipe (4) from the air curtain outlet (132) by passing through the air inlet (42) and the air outlet (43) of the spray pipe in sequence.

4. The fully automatic automotive trim panel uniform spraying device according to claim 3, characterized in that, The gun head (2) has hollow air curtain cavities (25) at its upper and lower ends. One end of the air curtain cavity (25) is connected to the air outlet (43) of the tube body, and the other end of the air curtain cavity (25) is connected to the air curtain opening (21). The air curtain opening (21) is inclined toward the horizontal axis away from the gun head (2).

5. The fully automatic automotive trim panel uniform spraying device according to claim 3, characterized in that, The gun body (1) has multiple through-hole air vents (133) on the outer wall near the gun head (2). The multiple air vents (133) are arranged in a ring on the same vertical plane. The air vents (133) are inclined and are connected to the air vents (43) of the tube body.

6. The fully automatic automotive trim panel uniform spraying device according to claim 5, characterized in that, The inner wall of the chuck (3) is provided with a plurality of arc-shaped plates (31), which are arranged in a ring on the same vertical plane. The arc-shaped plates (31) are inclined and contact the self-rotating air outlet (133). When compressed air is sprayed from the inclined self-rotating air outlet (133) to the inclined arc-shaped plates (31), the chuck (3) can rotate around its own horizontal axis.

Images