Infrared coating equipment for automobile parts and infrared coating process thereof

Abstract

The application provides an infrared coating equipment for automobile parts and an infrared coating process thereof, and belongs to the technical field of automobile part processing. The infrared coating equipment for automobile parts comprises a rack, a spraying mechanism and an infrared drying mechanism. The spraying mechanism comprises a lifting plate, a lifting cylinder fixed on a top plate and a spraying cylinder. The infrared drying mechanism comprises an infrared cylinder and an infrared lamp box. The infrared cylinder is sleeved outside the spraying cylinder. The lower end of the spraying cylinder is provided with a horizontally expanded blocking edge. After the spraying cylinder is lifted, the blocking edge can drive the infrared cylinder to be lifted together. The inner end of a translation square bar is connected with the infrared lamp box. The outer end of the translation square bar is provided with a vertical plate. The extension rod of a translation cylinder is connected with the vertical plate. The spraying cylinder is first used for spraying operation. After the spraying is completed, the spraying cylinder is lifted to expose the infrared cylinder. Then, the infrared lamp box is turned on to perform baking. The automobile parts to be processed do not need to be transferred between the coating and baking processes, the process steps are reduced, the production efficiency is improved, and the coating and baking effects are more uniform and comprehensive.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts processing technology, and relates to an infrared coating equipment and infrared coating process for automotive parts. Background Technology

[0002] Infrared lamp heating can cure paint more effectively and quickly with lower energy consumption, so existing automotive parts baking processes use infrared radiation heaters instead of resistance wire heaters. However, in existing automotive parts processing procedures, painting and baking are done in two separate devices. Automotive parts are placed on conveyor rollers and passed sequentially through a paint spraying box and an oven. For example, Chinese patent number [202011114178.0] discloses a painting device for automotive parts processing, including a paint spraying box, a conveying assembly, a scanning assembly, a first adjusting assembly, a second adjusting assembly, a paint spraying frame, a paint spraying assembly, a guide frame, a conveying assembly, and a drive assembly. The scanning assembly, the first adjusting assembly, the second adjusting assembly, and the drive assembly are all mounted on the paint spraying box. Two sets of the second adjusting assemblies are symmetrically arranged. The paint spraying frame and the guide frame are both positioned between the two sets of the second adjusting assemblies. The paint spraying frame is located above the guide frame, with both ends of the paint spraying frame movably penetrating one end of each set of the second adjusting assemblies and located outside the paint spraying box. Both ends of the guide frame movably penetrating one end of each set of the second adjusting assemblies. The drive assembly drives the paint spraying assembly to perform back-and-forth oscillating spraying. This method of spraying by constantly swinging the spraying components while the conveyor is in motion can easily lead to uneven painting and baking of automotive parts, resulting in substandard quality. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an infrared coating equipment and process for automotive parts. This eliminates the need to transfer the automotive parts to be processed between the coating and baking processes, reducing process steps, accelerating production efficiency, and achieving more uniform and comprehensive coating and baking results.

[0004] The objective of this invention can be achieved through the following technical solution: An infrared coating device for automotive parts, comprising a frame, a spraying mechanism, and an infrared drying mechanism, characterized in that the frame includes a base plate, a top plate, and columns connecting the base plate and the top plate; the base plate is provided with a hanging bracket assembly for suspending automotive parts; the spraying mechanism includes a lifting plate, a lifting cylinder fixed on the top plate, and a spraying cylinder; the upper end of the spraying cylinder is closed while the lower end is open; the upper end of the spraying cylinder is connected to the lower end face of the lifting plate via a support column; the top plate has a through hole for the spraying cylinder to pass through; the telescopic rod of the lifting cylinder is connected to the lifting plate; and a feeding straight pipe is circumferentially inserted through the upper end of the spraying cylinder. The lower end of the feeding straight pipe is connected to a nozzle with an inward-facing nozzle; the infrared drying mechanism includes an infrared cylinder, an infrared lamp box, a translational square rod, and a translational cylinder. The infrared cylinder is sleeved on the outside of the spraying cylinder. The lower end of the spraying cylinder has a horizontally extended baffle. The upper end plate of the infrared cylinder has a sliding hole for the spraying cylinder to slide. The inner edge of the sliding hole can abut against the baffle. After the spraying cylinder rises, it can drive the infrared cylinder to rise together through the baffle. Several guide square holes are opened on the peripheral wall of the infrared cylinder. The translational square rod slides with the guide square holes. The translational cylinder is fixed on the outer wall of the infrared cylinder. The inner end of the translational square rod is connected to the infrared lamp box. The outer end of the translational square rod has a vertical plate. The telescopic rod of the translational cylinder is connected to the vertical plate.

[0005] Furthermore, an adjusting cylinder is fixed to the lower end face of the lifting plate, and an annular plate is connected to the lower end of the telescopic rod of the adjusting cylinder. The feeding straight pipe is fixedly installed on the annular plate, and the upper end of the feeding straight pipe is connected to the paint tank through a hose. The upper end of the spraying cylinder has a guide sleeve, and the feeding straight pipe slides through the guide sleeve.

[0006] Furthermore, several guide posts are fixed to the top of the infrared cylinder, and a limiting sleeve is provided on the top plate. The guide posts slide through the limiting sleeve. The cooperation between the guide posts and the limiting sleeve makes the infrared cylinder more stable during lifting and lowering, and prevents it from rotating.

[0007] Furthermore, the infrared light box is equipped with far-infrared short-wave lamps and far-infrared long-wave lamps, which are alternately arranged. The appropriate wavelength of far-infrared lamp is selected for irradiation according to the baking requirements.

[0008] Furthermore, the mounting bracket assembly includes a central rotating shaft, a rotating base, and a motor. The motor and the rotating base are fixed on the base plate. A drive gear is fixed on the output shaft of the motor. The central rotating shaft is rotatably mounted on the rotating base. A driven gear that meshes with the drive gear is fixed on the central rotating shaft. Several circumferentially arranged drying rods are connected to the upper end of the central rotating shaft. Multiple clamps for holding automotive parts are connected to the drying rods.

[0009] Furthermore, the inner wall of the infrared cylinder is coated with a reflective coating. Using commercially available reflective paint applied to the inner wall of the infrared cylinder forms a reflective coating, which accelerates heating and is more energy-efficient.

[0010] Furthermore, it also includes a PLC controller and temperature sensors. Multiple temperature sensors are installed on the inner wall of the infrared cylinder. The infrared lamp box is connected to the PLC controller via a control line, and the temperature sensors are connected to the PLC controller via signal lines.

[0011] Work process: The workers assemble the car parts one by one onto the clamps, control the lifting cylinder to drive the support column and spray gun to descend. Both the infrared cylinder and the spray gun descend to contact the base plate. The spray gun inside first performs the spraying operation. After the spraying is completed, the spray gun is raised until the stop edge is against the inner edge of the sliding hole of the infrared cylinder. Then the infrared light box is turned on for baking. Spraying and baking are both in a closed environment to reduce external pollution. After the surface of the car parts is dried and cured, the spray gun continues to rise, raising the infrared cylinder to the highest point. At this time, the car parts can be removed from the mounting bracket assembly.

[0012] This invention also discloses an infrared coating process for automotive parts, characterized by comprising the following steps:

[0013] A. Assembling parts: Hanging each automotive part individually on the clips of the mounting bracket assembly;

[0014] B. Lowering the spray cylinder: Activate the lifting cylinder to lower the spray cylinder, and the infrared cylinder and the spray cylinder will successively abut against the base plate;

[0015] C. Spraying operation: Start the regulating cylinder to drive the feeding straight pipe to move up and down, adjust the nozzle to the appropriate position according to the size of the car parts, turn on the pump of the paint tank, and the paint is sprayed from the nozzle onto the car parts.

[0016] D. Raise the spray cylinder: Activate the lifting cylinder to raise the spray cylinder until the stop edge is just in contact with the inner edge of the sliding hole of the infrared cylinder;

[0017] E. Baking operation: Select and turn on the appropriate wavelength lamp tube according to the paint baking requirements, start the translation cylinder to adjust the infrared lamp box to the appropriate distance, control the output power of each infrared lamp box, bake the suspended car parts, and at the same time start the motor to drive the central shaft to rotate so that the car parts on the drying rack can be irradiated by infrared rays from different angles.

[0018] F. Material Removal: Activate the lifting cylinder to raise the infrared cylinder through the spraying cylinder until it touches the top plate, and remove the car parts from the mounting bracket assembly.

[0019] Furthermore, in step E above, the PLC controller receives temperature data through a temperature sensor and adjusts the output power of the infrared lamp box to keep the temperature inside the infrared cylinder constant after it reaches the baking temperature.

[0020] Compared with existing technologies, the infrared coating equipment and process for automotive parts have the following advantages:

[0021] 1. The infrared cylinder is located outside the spraying cylinder. Both can be raised and lowered, allowing the spraying and baking processes to be carried out sequentially without moving the hanging frame assembly, reducing the transfer steps between processes and speeding up production efficiency.

[0022] 2. Equipped with an adjustable infrared light box, and with a reflective coating, it can make infrared irradiation more uniform, enhance the intensity of infrared rays, and improve heating efficiency. The drying rod can rotate slowly under the drive of the central shaft, so that the surface of the car parts is heated more evenly and the baking efficiency is accelerated. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the infrared coating equipment for this automotive part.

[0024] Figure 2 This is a 3D view of the infrared coating equipment for automotive parts during the spraying operation.

[0025] Figure 3 This is a 3D view of the infrared coating equipment for automotive parts during the baking process.

[0026] Figure 4 This is a structural diagram of an infrared light box.

[0027] Figure 5 This is a structural diagram of the hanger assembly.

[0028] In the diagram, 1. Base plate; 2. Top plate; 3. Column; 4. Hanging bracket assembly; 41. Central rotating shaft; 42. Rotating seat; 43. Motor; 44. Driving gear; 45. Driven gear; 46. Drying rod; 47. Clamp; 5. Lifting plate; 6. Lifting cylinder; 7. Spraying cylinder; 8. Support column; 9. Feeding straight pipe; 10. Spray nozzle; 11. Infrared cylinder; 12. Infrared light box; 13. Translation square rod; 14. Translation cylinder; 15. Edge retaining wall; 16. Vertical plate; 17. Adjusting cylinder; 18. Annular plate; 19. Guide sleeve; 20. Guide column; 21. Limiting sleeve; 22. Far-infrared short-wave lamp; 23. Far-infrared long-wave lamp; 24. Temperature sensor. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1As shown, the infrared coating equipment for automotive parts includes a frame, a spraying mechanism, and an infrared drying mechanism. The frame includes a base plate 1, a top plate 2, and columns 3 connecting the base plate 1 and the top plate 2. Both the base plate 1 and the top plate 2 are square. The four columns 3 are located at the four corners of the base plate 1. The base plate 1 is equipped with a hanger assembly 4 for suspending automotive parts. Figure 5 As shown, the mounting bracket assembly 4 includes a central rotating shaft 41, a rotating base 42, and a motor 43. The motor 43 and the rotating base 42 are fixed on the base plate 1. A drive gear 44 is fixed on the output shaft of the motor 43. The central rotating shaft 41 is rotatably mounted on the rotating base 42. A driven gear 45 that meshes with the drive gear 44 is fixed on the central rotating shaft 41. Several circumferentially arranged drying rods 46 are connected to the upper end of the central rotating shaft 41. Multiple clamps 47 for holding automotive parts are connected to the drying rods 46. The motor 43 drives the central rotating shaft 41 to rotate through the gear set. The drying rods 46 can rotate slowly under the drive of the central rotating shaft 41, making the coating on the surface of the automotive parts more uniform, the heating more uniform, and accelerating the baking efficiency.

[0031] like Figure 2 As shown, the spraying mechanism includes a lifting plate 5, a lifting cylinder 6 fixed on a top plate 2, and a spraying cylinder 7. The upper end of the spraying cylinder 7 is closed and the lower end is open. The upper end of the spraying cylinder 7 is connected to the lower end face of the lifting plate 5 through a support column 8. The top plate 2 has a through hole for the spraying cylinder 7 to pass through. The telescopic rod of the lifting cylinder 6 is connected to the lifting plate 5. A feeding straight pipe 9 is circumferentially inserted through the upper end of the spraying cylinder 7. The lower end of the feeding straight pipe 9 is connected to a nozzle 10 with the nozzle facing inward.

[0032] An adjusting cylinder 17 is fixed to the lower end face of the lifting plate 5. The lower end of the telescopic rod of the adjusting cylinder 17 is connected to an annular plate 18. A feeding straight pipe 9 is fixedly installed on the annular plate 18. The upper end of the feeding straight pipe 9 is connected to the paint tank through a hose. The upper end of the spraying cylinder 7 has a guide sleeve 19, and the feeding straight pipe 9 slides through the guide sleeve 19. The adjusting cylinder 17 drives the annular plate 18 to move up and down, causing the feeding straight pipe 9 to slide along the guide sleeve 19, thereby adjusting the height of the spray nozzle 10.

[0033] like Figure 3As shown, the infrared drying mechanism includes an infrared cylinder 11, an infrared lamp box 12, a translational square rod 13, and a translational cylinder 14. The infrared cylinder 11 is sleeved on the outside of the spraying cylinder 7. The lower end of the spraying cylinder 7 has a horizontally extended baffle 15. The upper end plate of the infrared cylinder 11 has a sliding hole for the spraying cylinder 7 to slide. The inner edge of the sliding hole can abut against the baffle 15. The baffle 15 is used to support the infrared cylinder 11. After the spraying cylinder 7 rises, it can drive the infrared cylinder 11 to rise together through the baffle 15. Several guide square holes are opened on the peripheral wall of the infrared cylinder 11. The translational square rod 13 slides with the guide square holes. The translational cylinder 14 is fixed on the outer wall of the infrared cylinder 11. The inner end of the translational square rod 13 is connected to the infrared lamp box 12. The outer end of the translational square rod 13 has a vertical plate 16. The telescopic rod of the translational cylinder 14 is connected to the vertical plate 16.

[0034] The top of the infrared cylinder 11 is fixed with several guide posts 20, and the top plate 2 has a limiting sleeve 21. The guide posts 20 slide through the limiting sleeve 21. The cooperation between the guide posts 20 and the limiting sleeve 21 makes the infrared cylinder 11 more stable during the lifting and lowering process and prevents it from rotating.

[0035] The inner wall of the infrared cylinder 11 is coated with a reflective coating. A commercially available reflective paint is used to coat the inner wall of the infrared cylinder 11, forming a reflective coating that accelerates heating and is more energy-efficient.

[0036] like Figure 4 As shown, the infrared light box 12 is equipped with far-infrared short-wave lamps 22 and far-infrared long-wave lamps 23, which are arranged alternately. The appropriate wavelength of far-infrared lamp is selected for irradiation according to the baking requirements.

[0037] Work process: The workers assemble the car parts one by one onto the clamp 47, control the lifting cylinder 6 to drive the support column 8 and the spraying cylinder 7 to descend. Both the infrared cylinder 11 and the spraying cylinder 7 descend to contact the base plate 1. The spraying cylinder 7 inside performs the spraying operation first. After the spraying is completed, the spraying cylinder 7 is raised until the stop 15 is against the inner edge of the sliding hole of the infrared cylinder 11. Then the infrared light box 12 is turned on for baking. Spraying and baking are both in a closed environment to reduce external pollution. After the surface of the car parts is dried and cured, the spraying cylinder 7 continues to rise, raising the infrared cylinder 11 to the highest position. At this time, the car parts can be removed from the hanger assembly 4.

[0038] This invention also discloses an infrared coating process for automotive parts, comprising the following steps:

[0039] A. Assemble parts: Suspend each automotive part one by one onto the clips 47 of the bracket assembly 4;

[0040] B. Lowering the spray cylinder 7: Start the lifting cylinder 6 to lower the spray cylinder 7, and the infrared cylinder 11 and the spray cylinder 7 will successively abut against the base plate 1;

[0041] C. Spraying operation: Start the regulating cylinder 17 to drive the feeding straight pipe 9 to move up and down, adjust the nozzle 10 to the appropriate position according to the size of the car parts, turn on the pump of the paint tank, and spray the paint from the nozzle 10 onto the car parts.

[0042] D. Raise the spray cylinder 7: Start the lifting cylinder 6 and raise the spray cylinder 7 until the stop 15 is just in contact with the inner edge of the sliding hole of the infrared cylinder 11.

[0043] E. Baking operation: Select and turn on the appropriate wavelength lamp tube according to the paint baking requirements, start the translation cylinder 14 to adjust the infrared lamp box 12 to a suitable distance, control the output power of each infrared lamp box 12, bake the suspended car parts, and at the same time start the motor 43 to drive the central shaft 41 to rotate so that the car parts on the drying rod 46 can be irradiated by infrared rays from different angles.

[0044] F. Material Retrieval: Start the lifting cylinder 6, which drives the infrared cylinder 11 to rise until it touches the top plate 2 through the spraying cylinder 7, and remove the car parts from the bracket assembly 4.

[0045] This equipment also includes a PLC controller and temperature sensors 24. Multiple temperature sensors 24 are installed on the inner wall of the infrared cylinder 11. The infrared lamp box 12 is connected to the PLC controller via a control line, and the temperature sensors 24 are connected to the PLC controller via signal lines. In step E above, the PLC controller receives temperature data through the temperature sensors 24 and adjusts the output power of the infrared lamp box 12 to maintain a constant temperature inside the infrared cylinder 11 once it reaches the baking temperature. The infrared cylinder 11 is located outside the spraying cylinder 7, and both can be raised and lowered. Spraying and baking processes are performed sequentially without moving the hanging bracket assembly 4, reducing transfer steps between processes and accelerating production efficiency. The infrared lamp box 12, with its adjustable distance and reflective coating, ensures more uniform infrared irradiation, enhances infrared intensity, and improves heating efficiency.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An infrared coating equipment for automotive parts, comprising a frame, a spraying mechanism, and an infrared drying mechanism, characterized in that, The frame includes a base plate (1), a top plate (2), and a column (3) connecting the base plate (1) and the top plate (2). The base plate (1) is provided with a bracket assembly (4) for suspending automotive parts. The spraying mechanism includes a lifting plate (5), a lifting cylinder (6) fixed on the top plate (2), and a spraying cylinder (7). The upper end of the spraying cylinder (7) is closed and the lower end is open. The upper end of the spraying cylinder (7) is connected to the lower end face of the lifting plate (5) through a support column (8). The top plate (2) has a through hole for the spraying cylinder (7) to pass through. The telescopic rod of the lifting cylinder (6) is connected to the lifting plate (5). A feeding straight pipe (9) is circumferentially inserted through the upper end of the spraying cylinder (7). The lower end of the feeding straight pipe (9) is connected to a nozzle (10) with the nozzle facing inward. The infrared drying mechanism includes an infrared cylinder (11) and an infrared lamp box. (12) The translation rod (13) and the translation cylinder (14) are attached. The infrared cylinder (11) is sleeved on the outside of the spraying cylinder (7). The lower end of the spraying cylinder (7) has a horizontally extended flange (15). The upper end plate of the infrared cylinder (11) has a sliding hole for the spraying cylinder (7) to slide. The inner edge of the sliding hole can abut against the flange (15). After the spraying cylinder (7) rises, it can drive the infrared cylinder (11) to rise together through the flange (15). The periphery of the infrared cylinder (11) has several guide square holes. The translation rod (13) slides with the guide square holes. The translation cylinder (14) is fixed on the outer wall of the infrared cylinder (11). The inner end of the translation rod (13) is connected to the infrared lamp box (12). The outer end of the translation rod (13) has a vertical plate (16). The telescopic rod of the translation cylinder (14) is connected to the vertical plate (16).

2. The infrared coating equipment for automotive parts according to claim 1, characterized in that, The lower end face of the lifting plate (5) is fixed with an adjusting cylinder (17). The lower end of the telescopic rod of the adjusting cylinder (17) is connected to an annular plate (18). The feeding straight pipe (9) is fixedly installed on the annular plate (18). The upper end of the feeding straight pipe (9) is connected to the paint tank through a hose. The upper end of the spraying cylinder (7) has a guide sleeve (19). The feeding straight pipe (9) slides through the guide sleeve (19).

3. The infrared coating equipment for automotive parts according to claim 2, characterized in that, The top of the infrared cylinder (11) is fixed with several guide posts (20), and the top plate (2) has a limiting sleeve (21). The guide posts (20) slide through the limiting sleeve (21).

4. The infrared coating equipment for automotive parts according to claim 3, characterized in that, The infrared light box (12) is equipped with a far-infrared short-wave lamp (22) and a far-infrared long-wave lamp (23), which are alternately arranged.

5. The infrared coating equipment for automotive parts according to claim 4, characterized in that, The mounting bracket assembly (4) includes a central rotating shaft (41), a rotating seat (42), and a motor (43). The motor (43) and the rotating seat (42) are fixed on the base plate (1). A drive gear (44) is fixed on the output shaft of the motor (43). The central rotating shaft (41) is rotatably mounted on the rotating seat (42). A driven gear (45) that meshes with the drive gear (44) is fixed on the central rotating shaft (41). Several circumferentially arranged drying rods (46) are connected to the upper end of the central rotating shaft (41). Multiple clamps (47) for holding automotive parts are connected to the drying rods (46).

6. The infrared coating equipment for automotive parts according to claim 5, characterized in that, The inner wall of the infrared tube (11) is coated with a reflective coating.

7. The infrared coating equipment for automotive parts according to claim 6, characterized in that, It also includes a PLC controller and a temperature sensor (24). Multiple temperature sensors (24) are provided on the inner wall of the infrared cylinder (11). The infrared lamp box (12) is connected to the PLC controller through a control line, and the temperature sensor (24) is connected to the PLC controller through a signal line.

8. An infrared coating process for automotive parts, employing the infrared coating equipment for automotive parts as described in claim 7, characterized in that, Includes the following steps: A. Assemble parts: Hang the car parts one by one on the clips (47) of the bracket assembly (4); B. Lowering the spray cylinder (7): Start the lifting cylinder (6) to lower the spray cylinder (7), and the infrared cylinder (11) and the spray cylinder (7) will successively abut against the base plate (1); C. Spraying operation: Start the regulating cylinder (17) to drive the feeding straight pipe (9) to move up and down. Adjust the nozzle (10) to a suitable position according to the size of the car parts. Turn on the pump of the paint tank and spray the paint from the nozzle (10) onto the car parts. D. Raise the spraying cylinder (7): Start the lifting cylinder (6) and raise the spraying cylinder (7) until the stop edge (15) is just in contact with the inner edge of the sliding hole of the infrared cylinder (11); E. Baking operation: Select the appropriate wavelength lamp tube according to the paint baking requirements, start the translation cylinder (14) to adjust the infrared lamp box (12) to the appropriate distance, control the output power of each infrared lamp box (12) to bake the suspended car parts, and start the motor (43) to drive the central shaft (41) to rotate so that the car parts on the drying rod (46) can be irradiated by infrared rays from different angles. F. Material Removal: Start the lifting cylinder (6), and drive the infrared cylinder (11) to rise until it touches the top plate (2) through the spraying cylinder (7), and remove the car parts from the bracket assembly (4).

9. The infrared coating process for automotive parts according to claim 8, characterized in that, In step E above, the PLC controller receives temperature data through the temperature sensor (24) and adjusts the output power of the infrared lamp box (12) so that the temperature inside the infrared cylinder (11) remains constant after reaching the baking temperature.

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