Spraying treatment equipment for automobile bottom guard plate

Abstract

The invention discloses spraying treatment equipment for an automobile bottom protection plate. The spraying treatment equipment comprises a film pasting device, a spraying device, a transferring device and a baking device. The film pasting device comprises a film pasting conveying mechanism, a film pasting mechanism and a film pasting feeding mechanism; the spraying device comprises a shielding spraying carrier, a spraying feeding mechanism, a spraying mechanism, a spraying discharging mechanism and a spraying backflow mechanism and is used for achieving shielding spraying, spraying operation and carrier backflow. The transfer device is used for carrying the sprayed bottom protection plate to the baking device; the baking device comprises a baking frame, a tunnel furnace baking mechanism, a feeding mechanism, a discharging mechanism and a backflow mechanism and is used for baking products and recycling the baking frame. Automation and high efficiency of the whole spraying process of the automobile bottom guard plate can be achieved, and the manual operation intensity is effectively reduced while the spraying quality and the production efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, and in particular to a spraying equipment for automotive underbody protection panels. Background Technology

[0002] As a crucial protective structure at the bottom of the vehicle body, the underbody protection plate of new energy vehicles typically requires surface coating during production to enhance its protective performance and lifespan. In mass production scenarios, to achieve a balance between product quality and production efficiency, the relevant coating processes are gradually moving towards automation.

[0003] While existing spraying processes are generally equipped with automated spraying equipment, other processes, except for the spraying stage, still rely heavily on manual operation. This not only makes it difficult to standardize the work cycle but also results in varying degrees of deficiencies in product precision and quality control. With increasing demands for automation, optimizing the overall spraying line while ensuring spraying quality has become a key focus within the industry. Summary of the Invention

[0004] This invention provides a spraying equipment for automotive underbody protection panels, aiming to solve the problem of high reliance on manual labor in the existing spraying process of automotive underbody protection panels.

[0005] To achieve the above objectives, this application proposes a spraying treatment device for automotive underbody protection panels, including a film application device, a spraying device, a transfer device, and a baking device. The film-applying device includes a film-applying conveying mechanism, a film-applying mechanism, and a film-applying feeding mechanism; the film-applying conveying mechanism is used to convey a bottom protective plate to the film-applying mechanism; the film-applying mechanism is used to apply film to the bottom protective plate; the film-applying mechanism and the film-applying feeding mechanism constitute a film-applying unit, and there are two film-applying units, which are respectively arranged on both sides of the conveying direction of the film-applying conveying mechanism; The spraying apparatus includes a masking carrier, a spraying feed mechanism, a spraying mechanism, a spraying unloading mechanism, and a spraying return mechanism; the masking carrier is used to support the bottom protective plate and to mask a portion of the bottom protective plate during the spraying process; the spraying mechanism is used to spray the bottom protective plate; the spraying return mechanism is used to return the masking carrier from the spraying unloading mechanism to the spraying feed mechanism; The baking apparatus includes a baking rack, a tunnel oven baking mechanism, a baking loading mechanism, a baking unloading mechanism, and a baking recirculation mechanism; the baking rack is used to support the bottom guard plate; the baking loading mechanism is used to feed the bottom guard plate and the baking rack together into the tunnel oven baking mechanism; the baking unloading mechanism is used to remove the bottom guard plate and send the baking rack to the baking recirculation mechanism; the baking recirculation mechanism is used to return the baking rack from the baking unloading mechanism to the baking loading mechanism; The transfer device is used to move the bottom protective plate from the spraying unloading mechanism to the baking loading mechanism.

[0006] In some embodiments, the spraying feeding mechanism includes a first feeding roller line, a second feeding roller line, and a first traverse mechanism; the spraying unloading mechanism includes a first unloading roller line, a second unloading roller line, and a second traverse mechanism; the spraying return mechanism includes a spraying return track. Wherein, the first feed roller line is used to transport the masking carrier from the spray return track to the first traverse mechanism, the first traverse mechanism is used to horizontally transport the masking carrier from the first feed roller line to the second feed roller line, and the second feed roller line is used to transport the masking carrier into the spraying mechanism; The first unloading roller conveyor is used to transport the masking carrier from the spraying mechanism to the second traverse mechanism. The second traverse mechanism is used to horizontally transport the masking carrier from the first unloading roller conveyor to the second unloading roller conveyor. The second unloading roller conveyor is used to transport the masking carrier to the spraying return track. The spraying return track is used to transport the masking carrier from the second unloading roller conveyor to the first feeding roller conveyor. The spraying feeding mechanism also includes a material picking robot, which is used to install the bottom guard plate at the exit of the film conveying track into the masking carrier on the first feeding roller line.

[0007] In some embodiments, the feeding channel and the discharging channel of the spraying mechanism are located at opposite ends of its length, the second feeding roller line is provided corresponding to the feeding channel, and the first discharging roller line is provided corresponding to the discharging channel; The first feeding roller conveyor and the second feeding roller conveyor are arranged side by side in the feeding direction; the first feeding roller conveyor and the second feeding roller conveyor have opposite conveying directions; The first and second feeding rollers are arranged side by side in the feeding direction, and the feeding directions of the first and second feeding rollers are opposite. The two ends of the spray return track are respectively connected to the conveying ends of the second unloading roller line and the first feeding roller line.

[0008] In some embodiments, the first traverse mechanism is disposed between the first feed roller line and the second feed roller line and located below both of them, and the second traverse mechanism is disposed between the first discharge roller line and the second discharge roller line and located below both of them; Both the first lateral movement mechanism and the second lateral movement mechanism are provided with a first lifting mechanism on their movable ends. The first lifting mechanism is used to lift the spray shielding vehicle to a height that can be moved laterally, and to lower it to the initial position after the first lateral movement mechanism or the second lateral movement mechanism has completed the lateral movement. The second lateral movement mechanism is also provided with a second lifting mechanism, which is used to lift the bottom guard plate to a height that can be separated from the spray shielding vehicle, and lower it to the initial position after the transfer device removes the bottom guard plate.

[0009] In some embodiments, both the first traverse mechanism and the second traverse mechanism are provided with positioning column assemblies at their movable ends; the positioning column assembly includes a plurality of vertically arranged positioning columns, which enclose a guide channel for guiding the masking carrier from the spray return track into the lifting area of ​​the first lifting mechanism; The movable end of the first lifting mechanism is provided with a secondary positioning component for repositioning the spray shielding vehicle during the lifting process.

[0010] In some embodiments, the transfer device includes a material handling mechanism, which includes a fixed section, a first telescopic section, and a second telescopic section. The first telescopic section is slidably disposed on the fixed section, and the second telescopic section is slidably disposed on the first telescopic section along the length direction of the first telescopic section; A first gear and a second gear are respectively provided on the side surfaces of the first telescopic section and the second telescopic section facing each other; a rack that meshes with the first gear and the second gear is sleeved on the first gear and the second gear, and the first gear and the second gear are respectively located at the two ends of the first telescopic section and the second telescopic section that are opposite to each other. The first telescopic section is also provided with a first motor for driving the first gear to rotate. The first motor is used to drive the second telescopic section to extend and retract relative to the first telescopic section by meshing with the first gear and rotating with the second gear rack.

[0011] In some embodiments, the transfer device includes a rotating mechanism and a lifting mechanism; The lifting mechanism is located at the movable end of the rotating mechanism; the lifting mechanism is used to drive the material picking mechanism to move up and down in the vertical direction, and the rotating mechanism is used to drive the lifting mechanism and the material picking mechanism to rotate and change the transport direction; There are two lifting mechanisms, which are respectively located on both sides of the transfer device.

[0012] In some embodiments, the fixed segment is provided with a first extension along the telescopic direction of the first telescopic segment and the second telescopic segment; The first extension is provided with a telescopic guide assembly, which includes a protrusion and a plurality of toothed sleeves disposed on the protrusion, each of the toothed sleeves engaging with the rack. The fixed section has two second extensions on the left and right sides of the first telescopic section and the second telescopic section in the telescopic direction, respectively. The second extensions are used to connect to the movable end of the lifting mechanism.

[0013] In some embodiments, the film application mechanism includes an XYZ axis moving assembly, a film application robot disposed at the movable end of the XYZ axis moving assembly, and a plurality of suction claws disposed at the movable end of the film application robot. The film-feeding mechanism is located on the side of the film-applying mechanism opposite to the film-feeding conveying mechanism; The film-applying conveying mechanism includes a film-applying conveying track, a positioning reference plate disposed on the film-applying conveying track, and a third lifting mechanism disposed below the positioning reference plate; the third lifting mechanism is used to lift the bottom protective plate to the positioning reference plate for positioning before film application.

[0014] In some embodiments, the baking feeding mechanism and the baking unloading mechanism both include a baking conveying track arranged along the feeding direction of the baking rack, and each baking conveying track is provided with a baking rack handling mechanism. The baking rack handling mechanism includes a frame, an X-axis transverse component, a tilting component, a Z-axis lifting component, and a robotic arm; The robotic arm is used to grab or release the baking rack. The robotic arm is located at the movable end of the Z-axis lifting assembly. The Z-axis lifting assembly is located at the movable end of the flipping assembly. The flipping assembly is located at the movable end of the X-axis lateral movement assembly. The X-axis lateral movement assembly is located on the frame. The flipping component is used to flip the baking rack to switch between its horizontal feeding state and vertical return state.

[0015] The beneficial effects of this invention are as follows: By integrating a film-applying device, a spraying device, a transfer device, and a baking device, this invention constructs a highly automated base plate spraying production line solution. The film-applying device adopts a dual-film-applying unit structure, enabling simultaneous film application to base plates at multiple workstations, thus improving work efficiency. The spraying device, in conjunction with a masking carrier and a return structure, achieves masking accuracy control and carrier recycling. The transfer device coordinates transport actions to complete product flow between spraying and baking, ensuring overall cycle stability. The baking device is equipped with a baking rack and a return channel, supporting double-layer baking of the base plate and automatic rack recovery, further reducing labor input and energy consumption. This invention achieves full automation of the base plate spraying process, effectively reducing manual operation intensity while improving spraying quality and production efficiency, and has good prospects for widespread application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the spraying equipment for automotive underbody protection panels according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the film application device of the present invention; Figure 3 This is a schematic diagram of the film application unit of the present invention; Figure 4 This is a schematic diagram of the overall structure of the spraying device of the present invention; Figure 5 This is a schematic diagram of the spraying feeding mechanism of the present invention; Figure 6 This is a schematic diagram of the spraying and feeding mechanism of the present invention; Figure 7 This is a schematic diagram of the overall structure of the transfer device of the present invention; Figure 8 This is a partial structural schematic diagram of the transfer device of the present invention; Figure 9 This is a schematic diagram of the overall structure of the baking apparatus of the present invention; Figure 10 This is a schematic diagram of the baking feeding mechanism of the present invention; Figure 11 This is a partial structural schematic diagram of the baking reflux mechanism of the present invention; In the diagram: 1. Film application device; 11. Film application conveying mechanism; 111. Film application conveying track; 112. Positioning reference plate; 113. Third lifting mechanism; 12. Film application mechanism; 121. XYZ axis moving assembly; 122. Film application robot; 1221. Suction claw; 13. Film application feeding mechanism; 2. Spraying device; 21. Masking carrier; 22. Spraying feeding mechanism; 221. First feeding roller line; 222. Second feeding roller line; 223. First traverse mechanism; 224. Material handling robot; 23. Spraying mechanism; 24. Spraying unloading mechanism; 241. First unloading roller line; 242. Second unloading roller line; 243. Second traverse mechanism; 244. Second lifting mechanism; 25. Spraying return mechanism; 251. Spraying return track; 26. First lifting mechanism; 27. Positioning column assembly; 3. Transfer device; 31. Material handling mechanism; 311. Fixed section; 3111. First extension; 3112. Protrusion; 3113. Gear sleeve; 3114. Second extension; 312. First telescopic section; 3121. First gear; 3122. First motor; 313. Second telescopic section; 3131. Second gear; 314. Rack; 32. Lifting mechanism; 33. Rotating mechanism; 4. Baking apparatus; 41. Baking rack; 42. Tunnel oven baking mechanism; 43. Baking feeding mechanism; 44. Baking feeding mechanism; 441. Feeding robot; 45. Baking reflux mechanism; 46. Baking conveyor track; 47. Baking rack handling mechanism; 471. Frame; 472. X-axis transverse component; 473. Tilting component; 474. Z-axis lifting component; 475. Robotic arm; 5. Bottom guard plate. Detailed Implementation

[0017] The solutions in 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 a part of the embodiments of the present invention, and not all of them. 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.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0019] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0020] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0021] This invention proposes a spraying treatment device for automotive underbody protection panels, with reference to... Figures 1 to 11 It includes a film application device 1, a spraying device 2, a transfer device 3, and a baking device 4; the four are arranged in sequence and work together to perform continuous processing on the underbody protection plate 5 of automobiles, such as applying masking film, masking spraying, moving and transferring, and baking after painting. Reference Figures 2 to 3 The film application device 1 includes a film application conveying mechanism 11, a film application mechanism 12, and a film application feeding mechanism 13. The film application conveying mechanism 11 is used to convey the bottom protective plate 5 to the film application mechanism 12. The film application mechanism 12 is used to apply film to the bottom protective plate 5. The film application mechanism 12 and the film application feeding mechanism 13 constitute a film application unit. There are two film application units, which are respectively arranged on both sides of the conveying direction of the film application conveying mechanism 11. The dual film application unit structure on the left and right sides of the film application conveying mechanism 11 can apply masking film to different areas or different directions of the bottom protective plate 5, thereby increasing the film application efficiency. The film application feeding mechanism 13 is used to supply masking film to the film application mechanism 12. Reference Figures 4 to 6 The spraying device 2 includes a masking carrier 21, a spraying feed mechanism 22, a spraying mechanism 23, a spraying unloading mechanism 24, and a spraying return mechanism 25. The masking carrier 21 is used to support the bottom protective plate 5 and to mask a portion of the bottom protective plate 5 during the spraying process. The masking carrier 21 can support the bottom protective plate 5 and mask its openings or edges that do not need to be sprayed, ensuring product quality. The spraying mechanism 23 is used to spray the bottom protective plate 5. The spraying mechanism 23 adopts... Using existing spraying technology, such as a multi-spray gun structure, the surface of the bottom guard plate 5 is uniformly sprayed; the spraying return mechanism 25 is used to return the masking carrier 21 from the spraying unloading mechanism 24 to the spraying feeding mechanism 22; the spraying unloading mechanism 24 outputs the sprayed bottom guard plate 5 and the masking carrier 21 to the subsequent station, while the spraying return mechanism 25 constructs a circulation path for the masking carrier 21, returning it from the unloading side to the feeding side for masking installation of subsequent products; Reference Figures 9 to 11The baking device 4 includes a baking rack 41, a tunnel oven baking mechanism 42, a baking loading mechanism 43, a baking unloading mechanism 44, and a baking recirculation mechanism 45. The baking rack 41 is used to carry the bottom guard plate 5. The baking loading mechanism 43 is used to feed the bottom guard plate 5 and the baking rack 41 into the tunnel oven baking mechanism 42. The baking unloading mechanism 44 is used to remove the bottom guard plate 5 and send the baking rack 41 to the baking recirculation mechanism 45. The baking recirculation mechanism 45 is used to return the baking rack 41 from the baking unloading mechanism 44 to the baking loading mechanism 43. The baking device 4 is used to perform heat curing treatment on the sprayed bottom guard plate 5. The baking loading mechanism 43 loads the bottom guard plate 5 and the baking rack 41 onto the conveyor line and sends them into the oven. The baking unloading mechanism 44 separates and recycles them on the discharge side. The baking recirculation mechanism 45 constructs a return path for the baking rack, so that the empty baking rack 41 can participate in the next round of loading. Reference Figures 7 to 8 The transfer device 3 is used to transport the bottom protective plate 5 from the spraying unloading mechanism 24 to the baking loading mechanism 43, and to transport the bottom protective plate 5 after spraying from the output side of the spraying device 2 to the loading side of the baking device 4.

[0022] Furthermore, the spraying feeding mechanism 22 includes a first feeding roller line 221, a second feeding roller line 222, and a first transverse movement mechanism 223; the spraying unloading mechanism 24 includes a first unloading roller line 241, a second unloading roller line 242, and a second transverse movement mechanism 243; the spraying return mechanism 25 includes a spraying return track 251. The first feed roller line 221 is used to transport the masking carrier 21 from the spray return track 251 to the first traverse mechanism 223. The first traverse mechanism 223 is used to horizontally transport the masking carrier 21 from the first feed roller line 221 to the second feed roller line 222. The second feed roller line 222 is used to transport the masking carrier 21 into the spraying mechanism 23. The first unloading roller conveyor 241 is used to transport the masking carrier 21 from the spraying mechanism 23 to the second traverse mechanism 243. The second traverse mechanism 243 is used to horizontally transport the masking carrier 21 from the first unloading roller conveyor 241 to the second unloading roller conveyor 242. The second unloading roller conveyor 242 is used to transport the masking carrier 21 to the spraying return track 251. The spraying return track 251 is used to transport the masking carrier 21 from the second unloading roller conveyor 242 to the first feeding roller conveyor 221. The spraying feeding mechanism 22 also includes a material picking robot 224, which is used to install the bottom guard plate 5 at the exit of the film conveying track 111 into the masking carrier 21 on the first feeding roller line 221. The material picking robot 224 adopts a multi-axis manipulator in the prior art and is set at the exit of the film conveying track 111. It is used to grab and transport the bottom guard plate 5 after film application and install it into the masking carrier 21 at the corresponding position on the first feeding roller line 221.

[0023] Specifically, the first feed roller conveyor 221 transports the masking carrier 21 from the spray return track 251 to the first traverse mechanism 223, which then horizontally transports the masking carrier 21 to the second feed roller conveyor 222, which continues to transport it to the spraying mechanism 23 for spraying. The first unloading roller conveyor 241 outputs the sprayed masking carrier 21 from the spraying mechanism 23 to the second traverse mechanism 243, which then horizontally transports it to the second unloading roller conveyor 242, and finally transports it to the spray return track 251. The spray return track 251 forms a closed-loop transport path for transporting the empty masking carrier 21 from the second unloading roller conveyor 242 back to the first feed roller conveyor 221 for use in the next cycle.

[0024] Furthermore, the feeding channel and the discharging channel of the spraying mechanism 23 are located at both ends of its length direction, respectively. The second feeding roller line 222 is set corresponding to the feeding channel, and the first discharging roller line 241 is set corresponding to the discharging channel. The second feeding roller line 222 is arranged corresponding to the feeding channel and is responsible for sending the masking carrier 21 loaded with the bottom guard plate 5 into the spraying area. The first discharging roller line 241 is arranged corresponding to the discharging channel and is used to output the masking carrier 21 after spraying. The first feed roller conveyor 221 and the second feed roller conveyor 222 are arranged side by side in the feeding direction; the first feed roller conveyor 221 and the second feed roller conveyor 222 have opposite conveying directions; The first feeding roller conveyor 241 and the second feeding roller conveyor 242 are arranged side by side in the feeding direction, and the feeding directions of the first feeding roller conveyor 241 and the second feeding roller conveyor 242 are opposite. The first feeding roller conveyor 221 and the second feeding roller conveyor 222 are arranged side by side in the feeding direction and their conveying directions are opposite to each other, so that the first transverse mechanism 223 can effectively reverse the conveying direction; the first unloading roller conveyor 241 and the second unloading roller conveyor 242 are also arranged side by side in the unloading direction and their conveying directions are opposite. The two ends of the spray return track 251 are respectively connected to the conveying ends of the second unloading roller line 242 and the first feeding roller line 221; the spray return track 251 extends along the feeding direction, and its two ends are respectively connected to the output end and input end of the second unloading roller line 242 and the first feeding roller line 221, forming the circulation path of the masking carrier 21 in the spraying section.

[0025] In this embodiment, the spraying mechanism 23 has a semi-enclosed, shed-like structure. Inside, there is a spraying conveyor line for carrying the masking carrier 21, which is equipped with the bottom protective plate 5, to move along the spraying path. The spraying conveyor line runs through the length of the spraying mechanism 23. Its feeding channel is connected to the output end of the second feeding roller line 222 to receive the masking carrier 21 to be sprayed. The discharging channel is connected to the input end of the first unloading roller line 241 to output the masking carrier 21 after spraying. The spraying operation is completed by the spraying components set above or to the side during the operation of the spraying conveyor line, ensuring that the bottom protective plate 5 receives uniform spraying treatment and avoiding external interference and spraying pollution.

[0026] Furthermore, the first transverse mechanism 223 is disposed between the first feed roller line 221 and the second feed roller line 222 and located below both of them, and the second transverse mechanism 243 is disposed between the first discharge roller line 241 and the second discharge roller line 242 and located below both of them. Both the first lateral movement mechanism 223 and the second lateral movement mechanism 243 are provided with a first lifting mechanism 26. The first lifting mechanism 26 is used to lift the spray shielding vehicle 21 to a height that can be moved laterally, and lower it to the initial position after the first lateral movement mechanism 223 or the second lateral movement mechanism 243 has completed the lateral movement. A second lifting mechanism 244 is also provided on the movable end of the second lateral movement mechanism 243. The second lifting mechanism 244 is used to lift the bottom guard plate 5 to a height that can be separated from the spray shield carrier 21, and lower it to the initial position after the transfer device 3 takes away the bottom guard plate 5.

[0027] In this embodiment, the first transverse mechanism 223 and the second transverse mechanism 243 are respectively arranged between and below the two sets of roller conveyors, and the horizontal transport of the spray shielding carrier 21 is completed by bottom insertion. In order to ensure the stability and positioning accuracy of the transport operation, the movable ends of the two transverse mechanisms are respectively integrated with the first lifting mechanism 26, and the second transverse mechanism 243 is additionally provided with the second lifting mechanism 244. The two lifting mechanisms have different structural functions. The first lifting mechanism 26 is used to lift the masking carrier 21 together with the bottom guard plate 5 so that the first traverse mechanism 223 or the second traverse mechanism 243 can complete the transfer of the masking carrier 21 above the roller line; while the second lifting mechanism 244 located at the spray unloading end is only used to lift the bottom guard plate 5 from the masking carrier 21, so that the bottom guard plate 5 is separated from the masking carrier 21, making it easier for the transfer device 3 to remove the bottom guard plate 5; the first lifting mechanism 26 is lowered and released after the traverse of the first traverse mechanism 223 or the second traverse mechanism 243 is completed, so that the masking carrier 21 returns to the roller track surface; while the second lifting mechanism 244 is lowered after the transfer device 3 removes the bottom guard plate 5, so that the masking carrier 21 returns to the roller track surface.

[0028] Specifically, the bottom of the masking carrier 21 is not completely closed, but only the areas that need to be masked are provided with a masking structure to mask the non-painted areas of the bottom guard plate 5; the remaining areas that need to be painted are in an open state, so that the second lifting mechanism 244 can extend through the opening at the bottom of the masking carrier 21 and lift only the bottom guard plate 5 body to a specified height, thereby separating the bottom guard plate 5 from the masking carrier 21 without simultaneously lifting the masking carrier 21; similarly, the second lifting mechanism 244 can also achieve the purpose of simultaneously lifting the bottom guard plate 5 by directly lifting the body of the masking carrier 21; this structural design is conducive to improving material handling efficiency, reducing the complexity of the lifting structure, and avoiding additional interference and energy consumption caused by lifting the entire masking carrier 21.

[0029] Furthermore, both the first transverse mechanism 223 and the second transverse mechanism 243 are provided with positioning column assemblies 27 on their movable ends; the positioning column assembly 27 includes multiple vertically arranged positioning columns, which together form a guide channel for guiding the masking carrier 21 from the spray return track 251 into the lifting area of ​​the first lifting mechanism 26. The movable end of the first lifting mechanism 26 is provided with a secondary positioning component for repositioning the spray shielding vehicle 21 during the lifting process.

[0030] In this embodiment, the positioning post assembly 27 is used to initially limit and guide the spray masking carrier 21 on the roller line. Its structure includes two rows of multiple positioning posts arranged in the vertical direction, which are respectively set on the left and right sides of the spray masking carrier 21 in the conveying direction. The multiple positioning posts in each row are evenly spaced and enclose a guide channel.

[0031] To facilitate the positioning pins extending from below and acting on the spray shielding vehicle 21, the roller line is arranged intermittently, with gaps reserved at corresponding positions, allowing the positioning pins to pass through from below the roller line and form an encircling guide for the spray shielding vehicle 21.

[0032] Since the positioning column assembly 27 is located on the movable end of the first transverse mechanism 223 and the second transverse mechanism 243, it moves with the transverse mechanism between the roller lines and can be used to guide and position the masking carrier 21 at different workstations. Specifically, during the spraying feeding stage, the positioning column assembly 27 can guide the masking carrier 21 from the end of the spraying return track 251 into the lifting area of ​​the first lifting mechanism 26, ensuring that the first lifting structure can accurately pick up the masking carrier 21. After lifting and transverse movement, the positioning column assembly 27 continues to move with the transverse mechanism to the position of the second feeding roller line 222, guiding the masking carrier 21 to smoothly transition to the entrance of the spraying conveyor line.

[0033] Similarly, during the spraying unloading stage, the masking carrier 21 enters the first unloading roller line 241 from the end of the spraying conveyor line. The positioning column assembly 27 can guide it into the lifting area of ​​the first lifting mechanism 26 below the second lateral movement mechanism 243. After lateral movement to the second unloading roller line 242, the positioning column assembly 27 can also continue to guide the masking carrier 21 to transition to the starting point of the spraying return track 251. Through this follow-up guide structure, the precise transition and positioning of the masking carrier 21 in the entire process can be achieved without adding an additional guide structure.

[0034] During the lifting process of the masking carrier 21, the secondary positioning component rises together with the first lifting mechanism 26 and completes the final precise positioning. The secondary positioning component can use existing technology to set components such as limiting ramps, limiting blocks, slot alignment parts or mechanical stops for the masking carrier 21. After the masking carrier 21 is disengaged from the roller track, it is precisely aligned to improve the subsequent handling accuracy and spraying consistency.

[0035] With the cooperation of the initial positioning of the positioning column assembly 27 and the secondary positioning of the secondary positioning assembly, the entire assembly and transportation process of the spray masking carrier 21 is both stable and efficient, providing reliable positioning assurance for the spray masking process.

[0036] Furthermore, the transfer device 3 includes a material handling mechanism 31, which includes a fixed section 311, a first telescopic section 312, and a second telescopic section 313. The first telescopic section 312 is slidably disposed on the fixed section 311, and the second telescopic section 313 is slidably disposed on the first telescopic section 312 along the length direction of the first telescopic section 312; A first gear 3121 and a second gear 3131 are respectively provided on the side surfaces of the first telescopic section 312 and the second telescopic section 313 facing each other; a rack 314 is sleeved on the first gear 3121 and the second gear 3131 to mesh with them, and the first gear 3121 and the second gear 3131 are respectively located at the two ends of the first telescopic section 312 and the second telescopic section 313 that are opposite to each other; The first telescopic section 312 is also provided with a first motor 3122 for driving the first gear 3121 to rotate. The first motor 3122 is used to drive the rack 314 of the second gear 3131 to rotate through the meshing of the first gear 3121, thereby driving the second telescopic section 313 to extend and retract relative to the first telescopic section 312.

[0037] In this embodiment, the first telescopic section 312 and the second telescopic section 313 of the material handling mechanism 31 adopt a two-section nested structure. The sliding cooperation between the first telescopic section 312 and the second telescopic section 313 can realize large-stroke extension and contraction. The fixed section 311 serves as the mounting base for the first telescopic section 312 and the second telescopic section 313. In order to realize synchronous driving and structural self-locking between multiple sections, the opposite end faces of the first telescopic section 312 and the second telescopic section 313 are respectively provided with a first gear 3121 and a second gear 3131, and a rack 314 is used as the meshing medium. The first gear 3121 and the second gear 3131 are arranged at each end. Under the drive of the first motor 3122, the cooperation of the first gear 3121, the second gear 3131 and the rack 314 realizes that the two sections extend or retract at the same time, with stable movement and clear force transmission. When the second lifting mechanism 244 lifts the bottom guard plate 5 from the spray shield carrier 21, creating a gap between the bottom guard plate 5 and the spray shield carrier 21, the second telescopic section 313 of the transfer device 3 smoothly enters the gap and extends below the bottom guard plate 5; after the second telescopic section 313 is in place, the second telescopic section 313 can raise the height to lift the bottom guard plate 5 as a whole, realizing the material removal operation.

[0038] Furthermore, the transfer device 3 includes a rotating mechanism 33 and a lifting mechanism 32; The lifting mechanism 32 is located at the movable end of the rotating mechanism 33; the lifting mechanism 32 is used to drive the material picking mechanism 31 to lift and lower in the vertical direction, and the rotating mechanism 33 is used to drive the lifting mechanism 32 and the material picking mechanism 31 to rotate and change the conveying direction. There are two lifting mechanisms 32, which are respectively located on both sides of the transfer device 3.

[0039] In this embodiment, the lifting mechanism 32 moves the entire material handling structure up and down through the vertical guide rail and the driving device, which facilitates the handling operation between two devices at different elevations; the rotating mechanism 33 is set on the bottom platform and can drive the entire lifting and material handling system to rotate horizontally and turn around, so as to realize the direction change and docking of the device.

[0040] The lifting mechanism 32 adopts a screw drive structure to achieve vertical drive of the material picking mechanism 31, which has high transmission accuracy and smooth operation. In order to reduce the motor torque demand caused by the load and buffer the inertial impact during the up and down movement, a balance cylinder structure is also provided on the outside of the screw. By compressing gas, an auxiliary support force is formed to improve the stability and energy saving during the lifting process.

[0041] The rotating mechanism 33 includes a rotary motor for driving the lifting mechanism 32 and a gear assembly for cooperating rotation. The motor outputs torque to drive the rotating platform, enabling the material handling mechanism 31 to be adjusted at multiple angles in the horizontal plane. The rotating mechanism 33 is also equipped with a balancing cylinder device to achieve torque balance and attitude buffering during rotation, effectively reducing the shaking phenomenon caused by off-center load.

[0042] Furthermore, the fixed section 311 is provided with a first extension 3111 along the telescopic direction of the first telescopic section 312 and the second telescopic section 313; The first extension 3111 is provided with a telescopic guide assembly, which includes a protrusion 3112 and a plurality of toothed sleeves 3113 disposed on the protrusion 3112, each toothed sleeve 3113 engaging with a rack 314. The fixed section 311 is provided with two second extensions 3114 on the left and right sides of the first telescopic section 312 and the second telescopic section 313 in the telescopic direction, and the second extensions 3114 are used to connect the movable end of the lifting mechanism 32.

[0043] To further enhance the guiding stability of the material handling mechanism 31 during its telescopic movement, a first extension 3111 is provided along the length of the fixed section 311. The first extension 3111 extends along the telescopic direction, and a protrusion 3112 is provided on the upper surface of the first extension 3111. Multiple toothed sleeves 3113 are provided on the protrusion 3112 facing the rack 314. The multiple toothed sleeves 3113 are arranged at intervals and all mesh with the rack 314 installed on the second telescopic section 313 to form a limiting and guiding structure for constraining the trajectory of the rack 314. This limiting and guiding assembly can provide along-the-path support and meshing retention force during the telescopic movement of the rack 314 driven by the gear, preventing the rack 314 from deviating or shaking due to unilateral drive, and realizing the smooth and synchronous linear telescopic movement of the second telescopic section 313.

[0044] Two second extensions 3114 are provided on the left and right sides of the fixed section 311, which serve as mounting bases for the lifting mechanism 32 and are used to connect the movable end of the lifting mechanism 32. The second extensions 3114 have the characteristics of strong structural rigidity and balanced force, which can effectively avoid uneven load or shaking of the telescopic system during the lifting process, and improve the positioning accuracy and execution reliability of the overall handling device.

[0045] Furthermore, the film application mechanism 12 includes an XYZ axis moving assembly 121, a film application robot 122 disposed at the movable end of the XYZ axis moving assembly 121, and a plurality of suction claws 1221 disposed at the movable end of the film application robot 122. The film feeding mechanism 13 is located on the side of the film feeding mechanism 12 away from the film feeding conveying mechanism 11; The film-applying conveying mechanism 11 includes a film-applying conveying track 111, a positioning reference plate 112 disposed on the film-applying conveying track 111, and a third lifting mechanism 113 disposed below the positioning reference plate 112; the third lifting mechanism 113 is used to lift the bottom protective plate 5 to the positioning reference plate 112 for positioning before film application.

[0046] In this embodiment, the film-applying mechanism 12 drives the film-applying robot 122 to achieve three-dimensional path movement through the XYZ axis moving component 121. The movable end of the film-applying robot 122 is equipped with multiple suction claws 1221, which can be arranged according to the size of the bottom protective plate 5 and the film-applying area to flexibly apply protective film to different positions.

[0047] The suction claw 1221 at the end of the film-applying robot 122 generates a stable adsorption force on the masking film material through pneumatic or vacuum adsorption principles, ensuring the flatness and non-displacement of the film material during transportation. During the film application process, the XYZ axis moving component 121 first drives the film-applying robot 122 to move the adsorbed film material above the target film application position, and then the Z axis of the XYZ axis moving component 121 controls the film-applying robot 122 to descend vertically, completing the precise adhesion of the film material to the surface of the bottom protective plate 5, thereby realizing the automatic film application action.

[0048] The film feeding mechanism 13 is located on the side of the film feeding mechanism 12 away from the film feeding conveying mechanism 11, and provides pre-treated film sheets to the film feeding robot 122 to ensure the continuity and automation of the film feeding process.

[0049] The film-applying conveyor 11 uses the film-applying conveyor track 111 as the conveying path of the bottom guard plate 5, and sets a positioning reference plate 112 on the track to provide reference positioning; in order to cooperate with the robot arm to apply the film, a third lifting mechanism 113 is set below the positioning reference plate 112, which can lift the bottom guard plate 5 to the reference plane height before applying the film, so as to achieve accurate film surface positioning and stable support, and improve the film application accuracy.

[0050] Furthermore, both the baking feeding mechanism 43 and the baking unloading mechanism 44 include baking conveying tracks 46 arranged along the feeding direction of the baking rack 41, and each baking conveying track 46 is equipped with a baking rack transporting mechanism 47. The baking rack handling mechanism 47 includes a frame 471, an X-axis transverse component 472, a flipping component 473, a Z-axis lifting component 474, and a robotic arm 475; The robotic arm 475 is used to grab or release the baking rack 41. The robotic arm 475 is located at the movable end of the Z-axis lifting assembly 474. The Z-axis lifting assembly 474 is located at the movable end of the flipping assembly 473. The flipping assembly 473 is located at the movable end of the X-axis transverse assembly 472. The X-axis transverse assembly 472 is located on the frame 471. The flipping component 473 is used to flip the baking rack 41 to achieve the conversion between its horizontal feeding state and vertical return state.

[0051] In this embodiment, both the baking feeding mechanism 43 and the unloading mechanism are equipped with baking conveying tracks 46, which are arranged along the direction of the baking rack 41 entering and exiting the tunnel oven baking mechanism 42, and a baking rack transporting mechanism 47 is configured on the track to realize flexible gripping and placement of the baking rack 41.

[0052] Each baking rack handling mechanism 47 includes an X-axis lateral movement component 472, a flipping component 473, a Z-axis lifting component 474, and a robotic arm 475 connected in sequence. The structure is clearly arranged and compactly coordinated. The robotic arm 475 can perform the gripping and releasing operations of the baking rack 41. The Z-axis lifting component 474 gives it the ability to lift and lower in the vertical direction. The flipping component 473 is used to flip the baking rack 41 from a horizontal state to a vertical state, which is convenient for subsequent return. The X-axis lateral movement component 472 gives the whole machine the ability to move left and right. With the arrangement of the frame 471, the loading and unloading actions of baking can be completed in a small space.

[0053] The baking return mechanism 45 is designed as a conveying channel to adapt to the vertical state of the baking rack 41, and can complete the return path layout of the baking rack 41 in a limited space. Compared with the traditional horizontal conveyor line, this vertical return path can effectively save the horizontal space resources of the workshop, making the entire baking line more compact and efficient.

[0054] The internal transmission channel and heating area of ​​the tunnel oven baking mechanism 42 are arranged continuously, which is suitable for batch baking of multi-station products. The baking rack 41 body has a stacking function, which can simultaneously push two baking racks 41 with bottom guard plates 5 into the tunnel oven baking mechanism 42 for heating treatment during loading. On the one hand, it improves the processing capacity per unit time, and on the other hand, it effectively saves energy and reduces the overall line operating cost.

[0055] The baking unloading mechanism 44 also includes an unloading robot 441, which includes the existing multi-axis manipulator structure. The unloading robot 441 grabs the baked bottom guard plate 5 and transfers it to the subsequent work station. After the baking rack 41 completes the unloading of the bottom guard plate 5, it continues to be transferred by the baking rack transport mechanism 47 to the baking return mechanism 45 to realize the return cycle of the empty baking rack 41. The entire line can operate continuously and stably without generating any return gaps.

[0056] The working principle and process of this solution: The bottom protective plate 5 is first transported to the film application station by the film application conveying mechanism 11. The film application robots 122 in the film application units on both sides take the masking film material provided by the film application feeding mechanism 13, and drive the suction claw 1221 through the XYZ axis moving component 121 to accurately adsorb, position and attach the film material to the area that needs to be masked on the surface of the bottom protective plate 5. The film-coated bottom protector 5 continues to be conveyed forward along the film-coating conveyor track 111. The material picking robot 224 picks up the film-coated bottom protector 5 from the film-coating conveyor track 111 and transports it to the masking carrier 21 installed on the first feeding roller line 221. The masking carrier 21 with the bottom protector 5 installed is lifted by the first lifting mechanism 26 and transported by the first traversing mechanism 223 to the second feeding roller line 222 and then conveyed to the spraying mechanism 23. The spraying mechanism 23 is equipped with an integrated spraying conveyor line, whose two ends are respectively connected to the second feeding roller line 222 and the first unloading roller line 241. The masking carrier 21 is fed into this conveyor line and completes the spraying operation.

[0057] After spraying, the masking carrier 21 is conveyed to the second transverse mechanism 243 via the first unloading roller conveyor 241, and then transported to the second unloading roller conveyor 242. To facilitate the subsequent transfer of the bottom guard plate 5, a second lifting mechanism 244 is added to the movable end of the second transverse mechanism 243. Through the opening structure at the bottom of the masking carrier 21, only the bottom guard plate 5 is lifted, allowing the material picking mechanism 31 of the transfer device 3 to accurately insert into the bottom space, achieving precise gripping and transfer of the bottom guard plate 5. The unloaded masking carrier 21 then returns to the first feeding roller conveyor 221 via the spray return track 251, forming a closed-loop operation.

[0058] The transfer device 3 achieves multi-dimensional motion control through its own rotating mechanism 33 and lifting mechanism 32. Its end material picking mechanism 31, under the coordinated action of the drive system and guide components, transports the sprayed bottom guard plate 5 to the designated position of the baking loading mechanism 43 and places it on the baking rack 41.

[0059] The bottom guard plate 5 is pushed into the tunnel oven baking mechanism 42 by the baking feeding mechanism 43 along with the baking rack 41 for high-temperature shaping. After baking, the bottom guard plate 5 is unloaded by the unloading robot 441 of the baking unloading mechanism 44. The empty baking rack 41 is flipped into a vertical state by the baking rack transport mechanism 47 and sent into the baking return mechanism 45 to realize the return and recycling of the empty rack.

[0060] The entire spraying equipment, through the coordinated operation of four major devices—film application, spraying, transfer, and baking—creates a highly automated, compact, precise, and efficient base protection plate processing production line.

[0061] The above are only some or preferred embodiments of the present invention. Neither the text nor the drawings should limit the scope of protection of the present invention. All equivalent structural transformations made using the content of the present invention's specification and drawings under the overall concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A spraying treatment device for automotive underbody protection panels, characterized in that, Includes film application equipment, spraying equipment, transfer equipment, and baking equipment; The film-applying device includes a film-applying conveying mechanism, a film-applying mechanism, and a film-applying feeding mechanism; the film-applying conveying mechanism is used to convey a bottom protective plate to the film-applying mechanism; the film-applying mechanism is used to apply film to the bottom protective plate; the film-applying mechanism and the film-applying feeding mechanism constitute a film-applying unit, and there are two film-applying units, which are respectively arranged on both sides of the conveying direction of the film-applying conveying mechanism; The spraying apparatus includes a masking carrier, a spraying feed mechanism, a spraying mechanism, a spraying unloading mechanism, and a spraying return mechanism; the masking carrier is used to support the bottom protective plate and to mask a portion of the bottom protective plate during the spraying process; the spraying mechanism is used to spray the bottom protective plate; the spraying return mechanism is used to return the masking carrier from the spraying unloading mechanism to the spraying feed mechanism; The baking apparatus includes a baking rack, a tunnel oven baking mechanism, a baking loading mechanism, a baking unloading mechanism, and a baking recirculation mechanism; the baking rack is used to support the bottom guard plate; the baking loading mechanism is used to feed the bottom guard plate and the baking rack together into the tunnel oven baking mechanism; the baking unloading mechanism is used to remove the bottom guard plate and send the baking rack to the baking recirculation mechanism; the baking recirculation mechanism is used to return the baking rack from the baking unloading mechanism to the baking loading mechanism; The transfer device is used to move the bottom protective plate from the spraying unloading mechanism to the baking loading mechanism.

2. The spraying equipment for automotive underbody protection plates according to claim 1, characterized in that, The spraying feeding mechanism includes a first feeding roller line, a second feeding roller line, and a first transverse movement mechanism; the spraying unloading mechanism includes a first unloading roller line, a second unloading roller line, and a second transverse movement mechanism; the spraying return mechanism includes a spraying return track; Wherein, the first feed roller line is used to transport the masking carrier from the spray return track to the first traverse mechanism, the first traverse mechanism is used to horizontally transport the masking carrier from the first feed roller line to the second feed roller line, and the second feed roller line is used to transport the masking carrier into the spraying mechanism; The first unloading roller conveyor is used to transport the masking carrier from the spraying mechanism to the second traverse mechanism. The second traverse mechanism is used to horizontally transport the masking carrier from the first unloading roller conveyor to the second unloading roller conveyor. The second unloading roller conveyor is used to transport the masking carrier to the spraying return track. The spraying return track is used to transport the masking carrier from the second unloading roller conveyor to the first feeding roller conveyor. The spraying feeding mechanism also includes a material picking robot, which is used to install the bottom guard plate at the exit of the film conveying track into the masking carrier on the first feeding roller line.

3. The spraying equipment for automotive underbody protection plates according to claim 2, characterized in that, The infeed channel and the discharge channel of the spraying mechanism are located at both ends of its length direction, the second infeed roller line is set corresponding to the infeed channel, and the first discharge roller line is set corresponding to the discharge channel; The first feeding roller conveyor and the second feeding roller conveyor are arranged side by side in the feeding direction; the first feeding roller conveyor and the second feeding roller conveyor have opposite conveying directions; The first and second feeding rollers are arranged side by side in the feeding direction, and the feeding directions of the first and second feeding rollers are opposite. The two ends of the spray return track are respectively connected to the conveying ends of the second unloading roller line and the first feeding roller line.

4. The spraying equipment for automotive underbody protection plates according to claim 3, characterized in that, The first transverse mechanism is disposed between the first feed roller line and the second feed roller line and is located below both of them; the second transverse mechanism is disposed between the first discharge roller line and the second discharge roller line and is located below both of them. Both the first lateral movement mechanism and the second lateral movement mechanism are provided with a first lifting mechanism on their movable ends. The first lifting mechanism is used to lift the spray shielding vehicle to a height that can be moved laterally, and to lower it to the initial position after the first lateral movement mechanism or the second lateral movement mechanism has completed the lateral movement. The second lateral movement mechanism is also provided with a second lifting mechanism, which is used to lift the bottom guard plate to a height that can be separated from the spray shielding vehicle, and lower it to the initial position after the transfer device removes the bottom guard plate.

5. The spraying equipment for automotive underbody protection plates according to claim 4, characterized in that, Both the first transverse mechanism and the second transverse mechanism are provided with positioning column assemblies on their movable ends; the positioning column assembly includes a plurality of vertically arranged positioning columns, which together form a guide channel for guiding the masking carrier from the spray return track into the lifting area of ​​the first lifting mechanism; The movable end of the first lifting mechanism is provided with a secondary positioning component for repositioning the spray shielding vehicle during the lifting process.

6. The spraying equipment for automotive underbody protection plates according to claim 1, characterized in that, The transfer device includes a material handling mechanism, which includes a fixed section, a first telescopic section, and a second telescopic section. The first telescopic section is slidably disposed on the fixed section, and the second telescopic section is slidably disposed on the first telescopic section along the length direction of the first telescopic section; A first gear and a second gear are respectively provided on the side surfaces of the first telescopic section and the second telescopic section facing each other; a rack that meshes with the first gear and the second gear is sleeved on the first gear and the second gear, and the first gear and the second gear are respectively located at the two ends of the first telescopic section and the second telescopic section that are opposite to each other. The first telescopic section is also provided with a first motor for driving the first gear to rotate. The first motor is used to drive the second telescopic section to extend and retract relative to the first telescopic section by meshing with the first gear and rotating with the second gear rack.

7. The spraying equipment for automotive underbody protection plates according to claim 6, characterized in that, The transfer device includes a rotating mechanism and a lifting mechanism; The lifting mechanism is located at the movable end of the rotating mechanism; the lifting mechanism is used to drive the material picking mechanism to move up and down in the vertical direction, and the rotating mechanism is used to drive the lifting mechanism and the material picking mechanism to rotate and change the transport direction; There are two lifting mechanisms, which are respectively located on both sides of the transfer device.

8. The spraying equipment for automotive underbody protection plates according to claim 7, characterized in that, The fixed section is provided with a first extension along the telescopic direction of the first telescopic section and the second telescopic section; The first extension is provided with a telescopic guide assembly, which includes a protrusion and a plurality of toothed sleeves disposed on the protrusion, each of the toothed sleeves engaging with the rack. The fixed section has two second extensions on the left and right sides of the first telescopic section and the second telescopic section in the telescopic direction, respectively. The second extensions are used to connect to the movable end of the lifting mechanism.

9. The spraying equipment for automotive underbody protection plates according to claim 1, characterized in that, The film application mechanism includes an XYZ axis moving assembly, a film application robot arm disposed at the movable end of the XYZ axis moving assembly, and multiple suction claws disposed at the movable end of the film application robot arm; The film-feeding mechanism is located on the side of the film-applying mechanism opposite to the film-feeding conveying mechanism; The film-applying conveying mechanism includes a film-applying conveying track, a positioning reference plate disposed on the film-applying conveying track, and a third lifting mechanism disposed below the positioning reference plate; the third lifting mechanism is used to lift the bottom protective plate to the positioning reference plate for positioning before film application.

10. The spraying equipment for automotive underbody protection plates according to claim 9, characterized in that, Both the baking feeding mechanism and the baking unloading mechanism include baking conveying tracks arranged along the feeding direction of the baking rack, and each baking conveying track is equipped with a baking rack handling mechanism; The baking rack handling mechanism includes a frame, an X-axis transverse component, a tilting component, a Z-axis lifting component, and a robotic arm; The robotic arm is used to grab or release the baking rack. The robotic arm is located at the movable end of the Z-axis lifting assembly. The Z-axis lifting assembly is located at the movable end of the flipping assembly. The flipping assembly is located at the movable end of the X-axis lateral movement assembly. The X-axis lateral movement assembly is located on the frame. The flipping component is used to flip the baking rack to switch between its horizontal feeding state and vertical return state.

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