Automobile trim panel circulation type spraying and drying production line

Abstract

The present application belongs to the technical field of spraying device, and particularly relates to a coating spraying device for controlling a spraying area, and more particularly to a circulating spraying and drying production line for automobile trim panel. In the production line, a lifting column and a cleaning piece which can be triggered are arranged in a supporting table of a chain conveying mechanism. When a workpiece is conveyed to a spraying station, a triggering mechanism is started to drive the lifting column to rotate and rise. The workpiece on the vertical rod is lifted to realize comprehensive spraying without obstruction, and the cleaning piece automatically cleans the surface of the supporting table and the corner between the vertical rod and the supporting table, so that the coating residues in the area are simultaneously removed during the spraying process, the subsequent workpiece positioning deviation and spraying positioning error caused by coating accumulation are avoided, the continuity and stability of the production process are ensured, and the spraying quality of the workpiece and the product qualification rate are improved.

Description

Technical Field

[0001] This invention belongs to the field of spraying device technology, specifically relating to a coating spraying device for controlling the spraying area, and more particularly to a circulating spraying and drying production line for automotive trim panels. Background Technology

[0002] The automotive trim panel spraying process requires a series of steps, including pretreatment, spraying, and curing of the trim panel workpiece.

[0003] In traditional processes, when spraying coatings onto automotive trim panels, the need for workpiece positioning often results in insufficient coating application at the edges due to obstruction by the positioning mechanism, leading to defects at the edges. To address this issue, patent CN121338977A provides a spraying device and process for automotive trim panels. While this patent solves the problem of sufficient coating application, in actual production, it was found that a large amount of paint accumulates at the corners of the support platform and uprights. This prevents the workpiece from being placed in the preset position during subsequent spraying, causing errors in nozzle positioning and ultimately reducing the production quality of the workpiece.

[0004] Therefore, how to avoid the accumulation of a large amount of paint at the corner of the support platform and the upright after the workpiece is lifted is a technical problem that urgently needs to be solved.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0006] This disclosure provides at least one automotive trim panel circulating spraying and drying production line and its production process.

[0007] In a first aspect, embodiments of this disclosure provide a circulating spraying and drying production line for automotive trim panels, comprising: Work platform; A chain conveyor mechanism is installed on the working platform; A spraying mechanism is installed on the work platform; A drying mechanism is installed on the working platform; The chain conveyor mechanism is used to sequentially convey the workpiece into the spraying mechanism and the drying mechanism; The chain conveyor mechanism includes: At least two conveyor gear discs, which are rotatably mounted on the working platform; A conveyor chain that meshes with a conveyor gear disc; A drive motor is used to drive the conveyor gear disk to rotate, thereby driving the conveyor chain to operate; A support platform, which is rotatably mounted on the conveyor chain; An upright pole is set on a support platform, and lifting columns are arranged around the upright pole and housed in the support platform. A cleaning component is provided on the upper part of the lifting columns. A rotating gear is provided below the support platform; A trigger is provided between the two teeth of the rotating gear. When the trigger is triggered by the drive of the spraying mechanism, it drives the lifting column to rotate and rise, so that the lifting column lifts the workpiece on the upright and the cleaning component cleans the surface of the support platform and the corner between the upright and the support platform.

[0008] In one alternative embodiment, the cleaning component includes a plurality of cleaning plates; Multiple cleaning plates are rotatably connected to the upper part of the lifting column via a rotating shaft and are arranged around the side wall of the lifting column; When the trigger is activated by the drive of the spraying mechanism, the lifting column rotates and rises. When the cleaning plate is exposed from the top surface of the support platform, the cleaning plate flips outward and opens, and rotates with the lifting column to clean the surface of the support platform and the corner between the upright and the support platform.

[0009] In one alternative embodiment, the cleaning plate is made of a flexible material; When the cleaning plate protrudes from the top surface of the support platform, the cleaning plate flips outward and opens, with part of the cleaning plate abutting against the side wall of the upright and the other part of the cleaning plate contacting the surface of the support platform. The surface of the support platform is inclined downward along the axial direction to facilitate the outward guidance of the paint removed by the cleaning board.

[0010] In one alternative embodiment, a disc is rotatably provided at the bottom of the upright; A tail plate is provided below the disk; The tail plate is tilted toward one end of the trigger element; When the trigger is activated, it squeezes the tail plate, causing the upright to rise.

[0011] In one optional embodiment, the side wall of the upright is provided with a sliding helical groove; A slider is provided at the fitting point between the receiving hole of the support platform and the sliding spiral groove. When the upright is lifted, the lifting column rotates through the cooperation of the sliding helical groove and the slider.

[0012] In one optional embodiment, a return spring is fitted onto the upright; The return springs abut against the top surface of the disk and the bottom surface of the support platform, respectively. When the trigger is released, the upright is reset under the drive of the reset spring.

[0013] In one alternative implementation, the trigger includes: A push rod passes through the rotating gear, with one end protruding between two teeth of the rotating gear and the other end extending from the inner ring of the rotating gear and abutting against the inclined surface of the tail plate.

[0014] In one alternative embodiment, the other end of the push rod extends outward to form a retaining ring; A reset spring is fitted onto the push rod; One end of the reset spring is fixedly connected to the abutment ring, and the other end is fixedly connected to the inner wall of the rotating gear; When the trigger is deactivated, the push rod is reset under the drive of the reset spring.

[0015] In one optional embodiment, the driving component of the spraying mechanism includes: Drive chain; The drive chain meshes with a rotating gear below the support platform; When the chain conveyor transports the rotating gear of the corresponding support platform through the drive chain, it drives the support platform and the upright to rotate, and triggers the triggering element through the drive chain.

[0016] Secondly, this disclosure also provides a production process using the automotive trim panel circulating spray drying production line as described above, the production process including: The workpiece is fitted onto the upright; The workpiece is transported by a chain conveyor mechanism; When the workpiece is fed into the spraying mechanism, the rotating gear is driven to rotate by the drive component inside the spraying mechanism. After being triggered by the driving component, the triggering component drives the lifting column to rotate and rise, so that the lifting column lifts the workpiece on the upright and sprays the workpiece through the spraying mechanism, and the cleaning component cleans the surface of the support platform and the corner between the upright and the support platform. Chain conveyor mechanisms transport workpieces; The drying process is completed when the workpiece is fed into the drying mechanism.

[0017] The beneficial effects of this invention are that the automotive trim panel circulating spraying and drying production line and its production process, by setting triggerable lifting columns and cleaning components in the support platform of the chain conveyor mechanism, when the workpiece is conveyed to the spraying station, the triggering mechanism is activated, driving the lifting columns to rotate and rise. This not only lifts the workpiece on the upright to achieve unobstructed full spraying, but also allows the cleaning components to automatically clean the surface of the support platform and the corners between the upright and the support platform. Thus, paint residue in the area is removed simultaneously during the spraying process, avoiding subsequent workpiece positioning deviations and spraying positioning errors that may be caused by paint accumulation. This ensures the continuity and stability of the production process and improves the spraying quality and product qualification rate of the workpiece.

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a circulating spraying and drying production line for automotive trim panels provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of the support platform and upright provided in the embodiments of this disclosure; Figure 3 A cross-sectional view of the support platform and upright provided in an embodiment of this disclosure; Figure 4 A schematic diagram illustrating the interaction between the trigger and the lifting column provided in an embodiment of this disclosure; Figure 5 A partial structural diagram of the spraying mechanism and the chain conveyor mechanism provided in the embodiments of this disclosure when they are used together; Figure 6 A flowchart illustrating the production process of the automotive trim panel circulating spraying and drying production line provided in this embodiment of the disclosure.

[0022] In the diagram: 100, working platform; 200, chain conveyor mechanism; 210, conveyor gear disc; 220, conveyor chain; 230, support platform; 231, receiving hole; 240, upright; 250, lifting column; 251, disc; 252, tail plate; 253, sliding spiral groove; 254, return spring; 260, cleaning component; 261, cleaning plate; 270, rotating gear; 280, trigger component; 281, push rod; 282, holding ring; 283, return tension spring; 300, spraying mechanism; 310, drive chain; 400, drying mechanism. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise expressly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed that in traditional processes, when coating automotive trim panels, the workpiece needs to be positioned using a positioning mechanism. This often results in the edges of the workpiece being obstructed by the positioning mechanism, preventing sufficient coating application and leading to defects at the edges. To address this issue, patent CN121338977A provides a coating device and process for automotive trim panels. While this patent solves the problem of sufficient coating application, in actual production, it was found that a large amount of coating accumulates at the corners of the support platform and the uprights. This prevents the workpiece from being placed in the preset position during subsequent production, leading to errors in nozzle positioning and ultimately reducing the quality of the finished product.

[0030] Based on the above research, this disclosure provides a circulating spraying and drying production line for automotive trim panels and its production process. By setting a triggerable lifting column 250 and a cleaning component 260 in the support platform 230 of the chain conveyor mechanism 200, when the workpiece is conveyed to the spraying station, the triggering mechanism is activated, driving the lifting column 250 to rotate and rise. This not only lifts the workpiece on the upright 240 to achieve unobstructed full spraying, but also enables the cleaning component 260 to automatically clean the surface of the support platform 230 and the corner between the upright 240 and the support platform 230. This simultaneously removes paint residue in the area during the spraying process, avoiding subsequent workpiece positioning deviations and spraying positioning errors that may be caused by paint accumulation. This ensures the continuity and stability of the production process and improves the spraying quality and product qualification rate of the workpiece.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Please see Figure 1 and Figure 2This disclosure provides a circulating spraying and drying production line for automotive trim panels, comprising: a work platform 100; a chain conveyor mechanism 200 disposed on the work platform 100; a spraying mechanism 300 disposed on the work platform 100; and a drying mechanism 400 disposed on the work platform 100. The chain conveyor mechanism 200 is used to sequentially convey workpieces into the spraying mechanism 300 and the drying mechanism 400. The chain conveyor mechanism 200 includes: at least two conveying gear disks 210 rotatably disposed on the work platform 100; a conveyor chain 220 meshing with the conveying gear disks 210; and a drive motor for driving the conveying gear disks 210 to rotate, thereby driving the conveyor chain... The conveyor chain 220 operates; a support platform 230 is rotatably mounted on the conveyor chain 220; a vertical pole 240 is mounted on the support platform 230, and lifting columns 250 are arranged around the vertical pole 240 and housed within the support platform 230. A cleaning component 260 is mounted on the upper part of the lifting column 250; a rotating gear 270 is arranged below the support platform 230; a trigger 280 is arranged between the two teeth of the rotating gear 270. When the trigger 280 is triggered by the drive component of the spraying mechanism 300, it drives the lifting column 250 to rotate and rise, so that the lifting column 250 lifts the workpiece on the vertical pole 240 and the cleaning component 260 cleans the surface of the support platform 230 and the corner between the vertical pole and the support platform 230.

[0035] By installing a triggerable lifting column 250 and a cleaning component 260 within the support platform 230 of the chain conveyor mechanism 200, when the workpiece is conveyed to the spraying station, the triggering mechanism is activated, driving the lifting column 250 to rotate and rise. This not only lifts the workpiece on the upright 240 to achieve unobstructed full-area spraying, but also allows the cleaning component 260 to automatically clean the surface of the support platform 230 and the corner between the upright 240 and the support platform 230. This simultaneously removes paint residue in the area during the spraying process, avoiding subsequent workpiece positioning deviations and spraying positioning errors that may be caused by paint accumulation. This ensures the continuity and stability of the production process and improves the spraying quality and product qualification rate of the workpiece.

[0036] Please see Figure 3 and Figure 4 The cleaning component 260 includes multiple cleaning plates 261; the multiple cleaning plates 261 are rotatably connected to the upper part of the lifting column 250 via a rotating shaft and are arranged around the side wall of the lifting column 250; when the trigger 280 is triggered by the drive component of the spraying mechanism 300, the lifting column 250 is driven to rotate and rise. When the cleaning plates 261 are exposed from the top surface of the support platform 230, the cleaning plates 261 flip outward and open, and rotate with the lifting column 250 to clean the surface of the support platform 230 and the corner between the upright and the support platform 230.

[0037] When the lifting column 250 rises and exposes the cleaning plate 261 on the support platform 230, the cleaning plate 261 automatically flips open outward, forming an effective cleaning surface. As the cleaning plate 261 rotates with the lifting column 250, it can more comprehensively and proactively clean the surface and corners of the support platform 230, improving cleaning efficiency and thoroughness. Compared to traditional surface cleaning of the support platform, the addition of corner cleaning results in a better cleaning effect.

[0038] To avoid interference between the cleaning plate 261 and the upright, the cleaning plate 261 is made of an elastic material; when the cleaning plate 261 is exposed from the top surface of the support platform 230, the cleaning plate 261 flips outward and opens, with part of the cleaning plate 261 abutting against the side wall of the upright, and the other part of the cleaning plate contacting the surface of the support platform 230; the surface of the support platform 230 is inclined downward along the axial direction to facilitate the outward guidance of the paint removed by the cleaning plate.

[0039] Please continue reading. Figure 3 and Figure 4 A disc 251 is rotatably mounted at the bottom of the upright 240; a tail plate 252 is positioned below the disc 251; the tail plate 252 is inclined towards one end of the trigger 280; when the trigger 280 is triggered, it presses the tail plate 252, causing the upright 240 to rise. When the trigger 280 is driven, by pressing the inclined tail plate 252, the horizontal triggering force can be effectively converted into a vertical lifting force, resulting in a simple and reliable structure.

[0040] The upright 240 has a sliding spiral groove 253 on its side wall; the receiving hole 231 of the support platform 230 has a slider at the fitting point between its side wall and the sliding spiral groove 253; when the upright 240 is lifted, the lifting column 250 is rotated by the sliding spiral groove 253 and the slider.

[0041] By setting the sliding spiral groove 253 in conjunction with the slider, the lifting column 250 is automatically rotated during the lifting process, thereby making the cleaning more comprehensive and thorough.

[0042] Please continue reading. Figure 3 and Figure 4 A return spring 254 is fitted onto the upright post; the return spring 254 abuts against the top surface of the disc 251 and the bottom surface of the support platform 230 respectively; when the trigger 280 is released, the upright post is reset under the drive of the return spring 254. When the spraying process is completed and the trigger 280 is released, the return spring 254 can drive the upright post 240 and the workpiece on it to descend smoothly and return to the initial conveying position. This ensures the cyclical and automated nature of the production process, eliminates the need for manual intervention in resetting, and improves production efficiency.

[0043] It should be noted that the trigger 280 includes a push rod 281, which passes through the rotating gear 270, with one end protruding between two teeth of the rotating gear 270 and the other end extending from the inner ring of the rotating gear 270 and abutting against the inclined surface of the tail plate 252. The other end of the push rod 281 extends outward to form a retaining ring 282; a reset spring 283 is fitted onto the push rod 281; one end of the reset spring 283 is fixedly connected to the retaining ring 282, and the other end is fixedly connected to the inner wall of the rotating gear 270; when the trigger 280 is deactivated, the push rod 281 resets under the drive of the reset spring 283. The reset spring 283 ensures that after the triggering action is completed, the push rod 281 automatically retracts, preparing for the next working cycle. Please see Figure 1 and Figure 5 The driving component of the spraying mechanism 300 includes a driving chain 310; the driving chain 310 meshes with a rotating gear 270 below the support platform 230; when the chain conveying mechanism 200 conveys the rotating gear 270 of the corresponding support platform 230 through the driving chain 310, it drives the support platform 230 and the upright 240 to rotate, and triggers the trigger 280 through the driving chain 310.

[0044] When the conveying mechanism delivers the support platform 230 to the spraying station, the rotating gear 270 below it meshes with the fixed drive chain 310, thereby being driven to rotate, thus causing the workpiece to rotate.

[0045] Please see Figure 6 This disclosure also provides a production process using the aforementioned automotive trim panel circulating spraying and drying production line. By setting a triggerable lifting column 250 and a cleaning component 260 within the support platform 230 of the chain conveyor mechanism 200, when the workpiece is conveyed to the spraying station, the trigger mechanism is activated, driving the lifting column 250 to rotate and rise. This not only lifts the workpiece on the upright 240 to achieve unobstructed full spraying, but also allows the cleaning component 260 to automatically clean the surface of the support platform 230 and the corner between the upright 240 and the support platform 230. This simultaneously removes paint residue in the area during the spraying process, avoiding subsequent workpiece positioning deviations and spraying positioning errors that may be caused by paint accumulation. This ensures the continuity and stability of the production process and improves the spraying quality and product qualification rate of the workpiece.

[0046] Specifically, the production process includes: S110: Place the workpiece onto the upright 240; S120: The workpiece is conveyed by the chain conveyor mechanism 200; S130: When the workpiece is conveyed into the spraying mechanism 300, the rotating gear 270 is driven to rotate by the drive component inside the spraying mechanism 300. S140: After the triggering element 280 is triggered by the driving element, it drives the lifting column 250 to rotate and rise, so that the lifting column 250 lifts the workpiece on the upright 240, and sprays the workpiece through the spraying mechanism 300, and cleans the surface of the support platform 230 and the corner between the upright and the support platform 230 by the cleaning element 260. S150: Chain conveyor mechanism 200 transports workpieces; S160: Drying is completed when the workpiece is conveyed into the drying mechanism 400.

[0047] In summary, this automotive trim panel circulating spraying and drying production line and its production process, by setting a triggerable lifting column 250 and a cleaning component 260 within the support platform 230 of the chain conveyor mechanism 200, activates the trigger mechanism when the workpiece is conveyed to the spraying station, driving the lifting column 250 to rotate and rise. This not only lifts the workpiece on the upright 240 to achieve unobstructed full spraying, but also allows the cleaning component 260 to automatically clean the surface of the support platform 230 and the corner between the upright 240 and the support platform 230. This simultaneously removes paint residue in the area during the spraying process, avoiding subsequent workpiece positioning deviations and spraying positioning errors that may be caused by paint accumulation. This ensures the continuity and stability of the production process and improves the spraying quality and product qualification rate of the workpiece.

[0048] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0049] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0050] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0051] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0052] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A circulating spraying and drying production line for automotive trim panels, characterized in that, include: Work platform (100); A chain conveyor mechanism (200) is mounted on the work platform (100); A spraying mechanism (300) is mounted on the work platform (100); A drying mechanism (400) is provided on the working platform (100); The chain conveyor (200) is used to sequentially convey workpieces into the spraying mechanism (300) and the drying mechanism (400); The chain conveyor mechanism (200) includes: At least two conveying gear disks (210) are rotatably mounted on the work platform (100); A conveyor chain (220) meshes with a conveyor gear disc (210); A drive motor is used to drive the conveyor gear disk (210) to rotate, thereby driving the conveyor chain (220) to operate; A support platform (230) is rotatably mounted on the conveyor chain (220); A pole (240) is set on a support platform (230), and a lifting column (250) is provided around the pole (240) and housed in the support platform (230). A cleaning component (260) is provided on the upper part of the lifting column (250). A rotating gear (270) is provided below the support platform (230). A trigger (280) is provided between the two teeth of the rotating gear (270). When the trigger (280) is triggered by the drive of the spraying mechanism (300), it drives the lifting column (250) to rotate and rise, so that the lifting column (250) lifts the workpiece on the upright (240) and the cleaning component (260) cleans the surface of the support platform (230) and the corner between the upright and the support platform (230). The cleaning component (260) includes a plurality of cleaning plates (261); Multiple cleaning plates (261) are rotatably connected to the upper part of the lifting column (250) via a pivot and are arranged around the side wall of the lifting column (250); When the trigger (280) is triggered by the drive of the spraying mechanism (300), the lifting column (250) rotates and rises. When the cleaning plate (261) is exposed from the top surface of the support platform (230), the cleaning plate (261) flips outward and opens, and rotates with the lifting column (250) to clean the surface of the support platform (230) and the corner between the upright and the support platform (230). The cleaning plate (261) is made of elastic material; When the cleaning plate (261) is exposed from the top surface of the support platform (230), the cleaning plate (261) flips outward and opens, with part of the cleaning plate (261) abutting against the side wall of the upright and the other part of the cleaning plate (261) contacting the surface of the support platform (230). The surface of the support platform (230) is inclined downward along the axial direction to facilitate the outward guidance of the paint removed by the cleaning plate (261); The bottom of the upright (240) is rotatably provided with a disc (251). A tail plate (252) is provided below the disk (251). The tail plate (252) is inclined toward one end of the trigger (280); When the trigger (280) is triggered, it squeezes the tail plate (252), causing the upright (240) to rise; The side wall of the upright (240) is provided with a sliding spiral groove (253); A slider is provided at the fitting point between the receiving hole (231) of the support platform (230) and the sliding spiral groove (253); When the upright (240) is lifted, the lifting column (250) is driven to rotate through the sliding spiral groove (253) and the slider. A return spring (254) is fitted on the upright. The return spring (254) abuts against the top surface of the disk (251) and the bottom surface of the support platform (230); When the trigger (280) is deactivated, the upright is reset under the drive of the reset spring (254); The trigger (280) includes: A push rod (281) passes through the rotating gear (270), with one end protruding between the two teeth of the rotating gear (270) and the other end extending from the inner ring of the rotating gear (270) and abutting against the inclined surface of the tail plate (252).

2. The automotive trim panel circulating spraying and drying production line as described in claim 1, characterized in that, The other end of the push rod (281) extends outward to form a retaining ring (282); A reset spring (283) is fitted on the push rod (281); One end of the reset spring (283) is fixedly connected to the abutment ring (282), and the other end is fixedly connected to the inner wall of the rotating gear (270); When the trigger (280) is de-triggered, the push rod (281) is reset under the drive of the reset spring (283).

3. The automotive trim panel circulating spraying and drying production line as described in claim 1, characterized in that, The driving component of the spraying mechanism (300) includes: Drive chain (310); The drive chain (310) meshes with the rotating gear (270) below the support platform (230); When the chain conveyor (200) conveys the rotating gear (270) of the corresponding support platform (230) through the drive chain (310), it drives the support platform (230) and the upright (240) to rotate, and triggers the trigger (280) through the drive chain (310).

4. A production process using the automotive trim panel circulating spraying and drying production line as described in any one of claims 1-3, characterized in that, The production process includes: Place the workpiece onto the upright (240); The workpiece is conveyed by a chain conveyor (200); When the workpiece is fed into the spraying mechanism (300), the rotating gear (270) is driven to rotate by the drive component inside the spraying mechanism (300); After the trigger (280) is triggered by the drive, it drives the lifting column (250) to rotate and rise, so that the lifting column (250) lifts the workpiece on the upright (240), and sprays the workpiece through the spraying mechanism (300), and the cleaning component (260) cleans the surface of the support platform (230) and the corner between the upright and the support platform (230); The chain conveyor (200) transports the workpiece; Drying is completed when the workpiece is fed into the drying mechanism (400).

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