Automobile shell paint spraying device based on PLC control

Abstract

The invention discloses an automobile shell paint spraying device based on PLC control, and relates to the technical field of automobile shell paint spraying, according to the technical scheme, the automobile shell paint spraying device comprises a paint spraying shell, a pressurizing device is arranged on one side of the paint spraying shell, a switching shell is fixedly connected to the lower portion of the pressurizing device, a fifth motor is arranged in the switching shell, and a third gear is arranged at the output end of the fifth motor; the third gear is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with a mounting plate, the upper part of the mounting plate is fixedly connected with a nozzle, and the third gear is in meshed connection with a fourth gear. The nozzle can be connected with the pressurizing device when moving backwards, the mounting plate can be driven to rotate through rotation of the rotating shaft in the moving process of the nozzle, the nozzle is driven to rotate and switch through rotation of the mounting plate, and therefore switching of the nozzle is automatically completed, adjustment is rapid, and replacement is convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of automotive body painting technology, and more particularly to an automotive body painting device based on PLC control. Background Technology

[0002] PLC-controlled automotive body painting equipment is a highly efficient and intelligent painting solution in the modern automotive manufacturing field. This equipment, with a programmable logic controller (PLC) at its core, achieves comprehensive automated management of the painting process through precise program control. The PLC can receive real-time data from sensors, such as the position, shape, and paint thickness of the car body, and automatically adjust painting parameters, such as spray gun movement speed, paint flow rate, and pressure, to ensure uniform and stable paint quality. Furthermore, the equipment has fault diagnosis and alarm functions, enabling timely detection and handling of abnormal situations during the painting process, improving production efficiency and safety. With its intelligent and precise characteristics, PLC-controlled automotive body painting equipment has become an important tool for improving the quality and efficiency of automotive painting.

[0003] In actual use, the fixed connection between the spray gun and the transmission mechanism and the single nozzle design of the existing device result in insufficient process stability and make it impossible to optimize for different processes, which further limits the improvement of coating quality and production efficiency. Therefore, a PLC-controlled automotive body painting device is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the fixed connection between the spray gun and the transmission mechanism and the single nozzle design, which lead to insufficient equipment process stability and the inability to optimize for different processes, further limiting the improvement of coating quality and production efficiency. Therefore, this invention proposes a PLC-controlled automotive body painting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A PLC-controlled automotive body painting device includes a painting housing, a pressurizing device on one side of the painting housing, a switching housing fixedly connected to the lower part of the pressurizing device, a fifth motor inside the switching housing, a third gear at the output end of the fifth motor, a rotating shaft fixedly connected to the third gear, a mounting plate fixedly connected to the rotating shaft, a nozzle fixedly connected to the upper part of the mounting plate, a fourth gear meshing with the third gear, a fifth gear meshing with the fourth gear, a sixth gear fixedly connected to the fifth gear, a seventh gear meshing with the sixth gear, an eccentric shaft fixedly connected to the lower part of the seventh gear, a connecting plate rotatably connected to the eccentric shaft, a reciprocating plate rotatably connected to the connecting plate, and a reciprocating plate rotatably connected to the rotating shaft.

[0006] The pressurizing device has two different nozzles at its front end. When changing nozzles according to different operational needs, the fifth motor is started to drive the third gear to rotate. The rotation of the third gear drives the fourth gear and the rotating shaft to rotate. The rotation of the fourth gear drives the eccentric shaft to rotate, and the rotation of the eccentric shaft drives the mounting plate to move back and forth. During the forward movement of the mounting plate, the connection between the mounting plate and the pressurizing device is released. The rotation of the rotating shaft drives the mounting plate to rotate. When the nozzle rotation is completed, the mounting plate also moves back and forth to drive the nozzle to insert into the pressurizing device, completing the connection and realizing quick nozzle switching. There are two nozzles of different types. The connection part between the front end of the rotating shaft and the mounting plate is equipped with a telescopic rod.

[0007] The above technical solution further includes: A sealing mechanism is fixedly connected to one side of the pressurizing device. The sealing mechanism includes a sealing housing fixedly connected to the front end of the pressurizing device. A fourth motor is provided on one side of the sealing housing, and a sealing component is provided at the output end of the fourth motor.

[0008] The sealing assembly includes a rotating rod at the output end of a fourth motor, a connecting rod rotatably connected to the rotating rod, a sealing plate fixedly connected to the connecting rod, a sliding connection between the sealing plate and the sealing housing, and a rubber sealing gasket on the upper part of the sealing plate, which can seal the joint between the pressure nozzle and the pressure device.

[0009] A PLC controller is installed on the upper part of the paint spraying housing, and a second motor is installed on the upper part of the paint spraying housing. A lifting component is installed at the output end of the second motor. The PLC controller achieves precise control of the nozzle's movement trajectory, spraying speed, and spraying dosage parameters through programming. This ensures the uniformity of spraying quality and coating thickness, adapting to different vehicle models and spraying needs.

[0010] The lifting assembly includes a first transmission wheel located at the output end of a second motor. The first transmission wheel is connected to a transmission belt, and the transmission belt is connected to a second transmission wheel. A threaded rod is fixedly connected to the lower part of the second transmission wheel. The threaded rod is rotatably connected to the lifting housing, and the lifting housing is fixedly connected to one side of the paint spraying housing.

[0011] The threaded rod is threadedly connected to a transmission component, the transmission component is slidably connected to a limit plate, the limit plate is fixedly connected to the lifting housing, a lifting plate is fixedly connected to the upper part of the transmission component, and a limit groove is provided on the upper part of the transmission component for sliding connection with the limit plate through the limit groove.

[0012] A mounting frame is fixedly connected to the upper part of the lifting plate, and a first motor is provided on the upper part of the mounting frame. An adjusting rod is provided at the output end of the first motor, and a rotating mechanism is fixedly connected to the adjusting rod.

[0013] The rotating mechanism includes a rotating housing fixedly connected to one side of the adjusting rod, a third motor is installed inside the rotating housing, and a rotating component is installed at the output end of the third motor.

[0014] The rotating assembly includes a first gear located at the output end of a third motor, which meshes with a second gear. A pressurizing device is fixedly connected to the lower part of the second gear. A conveying pipe is provided on one side of the pressurizing device. There are two conveying pipes, which can input different types of paint into the pressurizing device.

[0015] The present invention has the following beneficial effects: 1. In this invention, the nozzle has a modular structure for easy installation and disassembly. There are two nozzles, each with a different structure and function. When changing nozzles according to different spraying requirements, starting the fifth motor can drive the third gear to rotate. The rotation of the third gear drives the fourth gear and the rotating shaft to rotate. The rotation of the fourth gear drives the eccentric shaft to rotate, thereby driving the nozzle to move back and forth. During the forward movement of the nozzle, the connection with the pressurizing device is released, while the nozzle can be connected to the pressurizing device when it moves backward. During the movement of the nozzle, the rotation of the rotating shaft can drive the mounting plate to rotate. The rotation of the mounting plate drives the nozzle to rotate and switch, thereby automatically completing the nozzle switching. The adjustment is rapid and the replacement is convenient.

[0016] 2. In this invention, during the spraying process, the second motor can be started to move the lifting plate up and down, thereby adjusting the spraying height of the nozzle. The first motor and the rotating mechanism can drive the nozzle to rotate in the horizontal and vertical directions, thereby adjusting the spraying angle of the nozzle, effectively improving the spraying flexibility of the nozzle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a PLC-controlled automotive body painting device proposed in this invention. Figure 2 This is a schematic diagram of the internal structure of the lifting housing in this invention; Figure 3 This is a schematic diagram showing the connection relationship of the pressurization device in this invention; Figure 4 This is a schematic diagram of the internal structure of the rotating housing in this invention; Figure 5 This is a schematic diagram of the connection relationship of the sealed housing in this invention; Figure 6 This is a schematic diagram of the rear end structure of the sealed housing in this invention; Figure 7 This is a schematic diagram of the internal structure of the switching housing in this invention.

[0018] In the diagram: 1. Paint spray housing; 2. Lifting housing; 3. First transmission wheel; 4. Transmission belt; 5. Second transmission wheel; 6. Lifting plate; 7. Mounting bracket; 8. First motor; 9. Adjusting rod; 10. Rotating housing; 11. Pressurizing device; 12. Nozzle; 13. Conveying pipe; 14. Sealing housing; 15. PLC controller; 16. Second motor; 17. Threaded rod; 18. Transmission component; 19. Limiting plate; 20. Mounting plate; 21. Third motor; 22. First gear; 23. Second gear; 24. Rotating rod; 25. Connecting rod; 26. Sealing plate; 27. Fourth motor; 28. Switching housing; 29. ​​Fifth motor; 30. Third gear; 31. Fourth gear; 32. Fifth gear; 33. Rotating rod; 34. Sixth gear; 35. Seventh gear; 36. Eccentric shaft; 37. Connecting plate; 38. Reciprocating plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 like Figures 1-7 As shown, a PLC-controlled automotive body painting device includes a painting housing 1. A pressurizing device 11 is provided on one side of the painting housing 1. A switching housing 28 is fixedly connected to the lower part of the pressurizing device 11. A fifth motor 29 is provided inside the switching housing 28. A third gear 30 is provided at the output end of the fifth motor 29. A rotating shaft 33 is fixedly connected to the third gear 30. A mounting plate 20 is fixedly connected to the rotating shaft 33. A nozzle 12 is fixedly connected to the upper part of the mounting plate 20. A fourth gear 31 is meshed with the third gear 30. A fifth gear 32 is meshed with the fourth gear 31. A sixth gear 34 is fixedly connected to the fifth gear 32. A seventh gear 35 is meshed with the sixth gear 34. An eccentric shaft 36 is fixedly connected to the lower part of the seventh gear 35. A connecting plate 37 is rotatably connected to the eccentric shaft 36. A reciprocating plate 38 is rotatably connected to the connecting plate 37. The reciprocating plate 38 is rotatably connected to the rotating shaft 33.

[0021] The front end of the pressurizing device 11 is equipped with two different nozzles 12. When changing the nozzle 12 according to different operating requirements, the fifth motor 29 is started to drive the third gear 30 to rotate. The rotation of the third gear 30 drives the fourth gear 31 and the rotating shaft 33 to rotate. The rotation of the fourth gear 31 drives the eccentric shaft 36 to rotate. The rotation of the eccentric shaft 36 drives the mounting plate 20 to move back and forth. During the forward movement of the mounting plate 20, the connection between it and the pressurizing device 11 is released. The rotation of the rotating shaft 33 drives the mounting plate 20 to rotate. When the nozzle 12 is switched, the mounting plate 20 also moves back and forth to drive the nozzle 12 to insert into the pressurizing device 11, completing the connection and realizing the quick switching of the nozzle 12. There are two nozzles 12 of different types. The front end of the rotating shaft 33 is equipped with a telescopic rod at the connection part with the mounting plate 20.

[0022] A sealing mechanism is fixedly connected to one side of the pressurizing device 11. The sealing mechanism includes a sealing housing 14 fixedly connected to the front end of the pressurizing device 11. A fourth motor 27 is provided on one side of the sealing housing 14. A sealing component is provided at the output end of the fourth motor 27. The sealing component includes a rotating rod 24 provided at the output end of the fourth motor 27. A connecting rod 25 is rotatably connected to the rotating rod 24. A sealing plate 26 is fixedly connected to the connecting rod 25. The sealing plate 26 is slidably connected to the sealing housing 14. A rubber sealing gasket is provided on the upper part of the sealing plate 26. The joint between the pressure nozzle 12 and the pressurizing device 11 can be sealed.

[0023] In this embodiment, the nozzle 12 has a modular structure for easy installation and disassembly. There are two nozzles 12, each with a different structure and function. The nozzles 12 can be replaced according to different spraying requirements. During the switching process, the locking of the sealing mechanism is first released, and then the fifth motor 29 is started to drive the third gear 30 to rotate. The rotation of the third gear 30 drives the fourth gear 31 and the rotating shaft 33 to rotate. The rotation of the fourth gear 31 drives the meshing fifth gear 32 to rotate. The rotation of the fifth gear 32 drives the fixedly connected sixth gear 34 to rotate. The rotation of the sixth gear 34 drives the meshing seventh gear 35 to rotate. The rotation of the seventh gear 35 drives the fixedly connected eccentric shaft 36 to rotate. The rotation of the eccentric shaft 36 drives the rotatingly connected connecting plate 37 to rotate. The rotation of the connecting plate 37 drives the rotatingly connected reciprocating plate 38 to move back and forth, thereby driving the nozzle 12 to move back and forth. During the forward movement of the nozzle 12, the connection with the pressurizing device 11 is released, and when the nozzle 12 moves backward, the connection with the pressurizing device 11 is completed.

[0024] During the movement of nozzle 12, the rotation of the rotating shaft 33 can drive the mounting plate 20 to rotate, and the rotation of the mounting plate 20 can drive the nozzle 12 to rotate and switch, thereby automatically completing the adjustment of nozzle 12. The adjustment is quick and the replacement is convenient. When the switched nozzle 12 is inserted into the pressurizing device 11, the fourth motor 27 is started, and the fourth motor 27 drives the rotating rod 24 to rotate. The rotation of the rotating rod 24 drives the connecting rod 25 connected on both sides to rotate. The rotation of the connecting rod 25 can drive the sealing plate 26 connected to rotate to close inward, sealing the joint between the pressurizing device 11 and the nozzle 12, thus improving the use effect of the device.

[0025] Example 2 like Figures 1-7 As shown, a PLC controller 15 is installed on the upper part of the paint spraying housing 1, and a second motor 16 is installed on the upper part of the paint spraying housing 1. A lifting assembly is installed at the output end of the second motor 16. The PLC controller 15 realizes precise control of the movement trajectory, spraying speed and spraying dosage parameters of the nozzle 12 through programming. This ensures the uniformity of spraying quality and coating thickness, and adapts to different vehicle models and spraying needs. The lifting assembly includes a first transmission wheel 3 installed at the output end of the second motor 16. The first transmission wheel 3 is connected to a transmission belt 4. The transmission belt 4 is connected to a second transmission wheel 5. A threaded rod 17 is fixedly connected to the lower part of the second transmission wheel 5. The threaded rod 17 is rotatably connected to the lifting housing 2. The lifting housing 2 is fixedly connected to one side of the paint spraying housing 1.

[0026] A threaded rod 17 is threadedly connected to a transmission component 18. The transmission component 18 is slidably connected to a limiting plate 19. The limiting plate 19 is fixedly connected to the lifting housing 2. A lifting plate 6 is fixedly connected to the upper part of the transmission component 18. A limiting groove is provided on the upper part of the transmission component 18, through which it is slidably connected to the limiting plate 19. A mounting frame 7 is fixedly connected to the upper part of the lifting plate 6. A first motor 8 is provided on the upper part of the mounting frame 7. An adjusting rod 9 is provided at the output end of the first motor 8. A rotating mechanism is fixedly connected to the adjusting rod 9. The rotating mechanism includes a rotating housing 10 fixedly connected to one side of the adjusting rod 9. A third motor 21 is provided inside the rotating housing 10. A rotating assembly is provided at the output end of the third motor 21. The rotating assembly includes a first gear 22 provided at the output end of the third motor 21. The first gear 22 is meshed with a second gear 23. A pressurizing device 11 is fixedly connected to the lower part of the second gear 23. A conveying pipe 13 is provided on one side of the pressurizing device 11. There are two conveying pipes 13, which can input different types of paint into the pressurizing device 11.

[0027] In this embodiment, the PLC controller 15, located inside the paint spraying housing 1, precisely controls parameters such as the movement trajectory of the nozzle 12, spraying speed, and spraying dosage through programming. This ensures the uniformity of spraying quality and coating thickness, adapting to different vehicle models and spraying requirements. Furthermore, the PLC controller 15 can also adjust the spraying pressure of the nozzle 12, the nozzle spacing, and the paint flow rate to meet the spraying requirements of different paints, achieving precise control of the painting process. During the spraying process, starting the second motor 16 can drive the first transmission wheel 3 to rotate. The rotation of the first transmission wheel 3 drives the second transmission wheel 5, which is connected by the transmission belt 4, to rotate. The rotation of the second transmission wheel 5 can drive the fixedly connected threaded rod 17 to rotate. The rotation of the threaded rod 17 can drive the threaded transmission component 18 to move. During the movement of the transmission component 18, the slidingly connected limit plate 19 can ensure its stability during movement. The movement of the transmission component 18 can drive the lifting plate 6 to move up and down, thereby adjusting the spraying height of the nozzle 12.

[0028] The first motor 8 can drive the nozzle 12 to rotate in the vertical direction. The third motor 21 can drive the first gear 22 to rotate. The rotation of the first gear 22 can drive the meshing second gear 23 to rotate. The rotation of the second gear 23 can drive the nozzle 12 to rotate in the horizontal direction. The spraying angle of the nozzle 12 can be adjusted by the first motor 8 and the third motor 21, which effectively improves the spraying flexibility of the nozzle 12.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PLC-controlled automotive body painting device, comprising a painting housing (1), characterized in that, A pressurizing device (11) is provided on one side of the paint spray housing (1). A switching housing (28) is fixedly connected to the lower part of the pressurizing device (11). A fifth motor (29) is provided inside the switching housing (28). A third gear (30) is provided at the output end of the fifth motor (29). A rotating shaft (33) is fixedly connected to the third gear (30). A mounting plate (20) is fixedly connected to the rotating shaft (33). A nozzle (12) is fixedly connected to the upper part of the mounting plate (20). The third gear (30) meshes with the nozzle. A fourth gear (31) is connected, and the fourth gear (31) is meshed with a fifth gear (32). The fifth gear (32) is fixedly connected with a sixth gear (34). The sixth gear (34) is meshed with a seventh gear (35). An eccentric shaft (36) is fixedly connected to the lower part of the seventh gear (35). The eccentric shaft (36) is rotatably connected to a connecting plate (37). The connecting plate (37) is rotatably connected to a reciprocating plate (38). The reciprocating plate (38) is rotatably connected to the rotating shaft (33). The pressurizing device (11) has two different nozzles (12) at its front end. When changing the nozzle (12) according to different work requirements, the fifth motor (29) is started to drive the third gear (30) to rotate. The rotation of the third gear (30) drives the fourth gear (31) and the rotating shaft (33) to rotate. The rotation of the fourth gear (31) drives the eccentric shaft (36) to rotate. The rotation of the eccentric shaft (36) drives the mounting plate (20) to move back and forth. During the forward movement of the mounting plate (20), the connection between the mounting plate (20) and the pressurizing device (11) is released. The rotation of the rotating shaft (33) drives the mounting plate (20) to rotate. When the nozzle (12) is switched, the mounting plate (20) also moves back and forth to drive the nozzle (12) to be inserted into the pressurizing device (11) to complete the connection and realize the rapid switching of the nozzle (12).

2. The automotive body painting device based on PLC control according to claim 1, characterized in that, A sealing mechanism is fixedly connected to one side of the pressurizing device (11). The sealing mechanism includes a sealing housing (14) fixedly connected to the front end of the pressurizing device (11). A fourth motor (27) is provided on one side of the sealing housing (14), and a sealing component is provided at the output end of the fourth motor (27).

3. The automotive body painting device based on PLC control according to claim 2, characterized in that, The sealing assembly includes a rotating rod (24) provided at the output end of a fourth motor (27), the rotating rod (24) being rotatably connected to a connecting rod (25), the connecting rod (25) being fixedly connected to a sealing plate (26), and the sealing plate (26) being slidably connected to the sealing housing (14).

4. The automotive body painting device based on PLC control according to claim 1, characterized in that, A PLC controller (15) is provided on the upper part of the paint spraying housing (1), and a second motor (16) is provided on the upper part of the paint spraying housing (1). A lifting component is provided at the output end of the second motor (16).

5. The automotive body painting device based on PLC control according to claim 4, characterized in that, The lifting assembly includes a first transmission wheel (3) provided at the output end of the second motor (16), the first transmission wheel (3) is connected to a transmission belt (4), the transmission belt (4) is connected to a second transmission wheel (5), the lower part of the second transmission wheel (5) is fixedly connected to a threaded rod (17), the threaded rod (17) is rotatably connected to the lifting housing (2), and the lifting housing (2) is fixedly connected to one side of the paint housing (1).

6. The automotive body painting device based on PLC control according to claim 5, characterized in that, The threaded rod (17) is threadedly connected to a transmission component (18), the transmission component (18) is slidably connected to a limit plate (19), the limit plate (19) is fixedly connected to the lifting housing (2), and a lifting plate (6) is fixedly connected to the upper part of the transmission component (18).

7. A PLC-controlled automotive body painting device according to claim 6, characterized in that, The upper part of the lifting plate (6) is fixedly connected to the mounting frame (7), the upper part of the mounting frame (7) is provided with a first motor (8), the output end of the first motor (8) is provided with an adjusting rod (9), and the adjusting rod (9) is fixedly connected to a rotating mechanism.

8. The automotive body painting device based on PLC control according to claim 7, characterized in that, The rotating mechanism includes a rotating housing (10) fixedly connected to one side of the adjusting rod (9), and a third motor (21) is provided inside the rotating housing (10), and a rotating component is provided at the output end of the third motor (21).

9. A PLC-controlled automotive body painting device according to claim 8, characterized in that, The rotating assembly includes a first gear (22) provided at the output end of a third motor (21), a second gear (23) meshing with the first gear (22), a pressurizing device (11) fixedly connected to the lower part of the second gear (23), and a conveying pipe (13) provided on one side of the pressurizing device (11).

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