Automatic PVC spraying production line for automobile parts

Abstract

The invention discloses an automatic PVC spraying production line for automobile parts. The automatic PVC spraying production line comprises a feeding device; the spraying device comprises a spraying conveying mechanism and a multi-axis spraying mechanism. The multi-axis spraying mechanism comprises a spraying assembly, a multi-axis linkage assembly, a swing assembly and a rotating assembly. The discharging device is in butt joint with the spraying device and comprises a stacking mechanism and a steering mechanism. The feeding device conveys a carrier carrying plate-shaped materials to the spraying device, and the movably-arranged multi-shaft spraying mechanism can move for spraying. The spraying assembly can move in a multi-axis mode, the spraying direction and angle are changed under the cooperative control of the rotating assembly and the swing assembly, the spraying effect is improved, the materials are borne on the carriers to be conveyed, clamping blind areas are avoided, damage caused by rigid contact is avoided, the product yield is improved, the stacking mechanism can stack the multiple carriers, and the product quality is improved. The steering mechanism rotates to adjust the direction, conveying is facilitated, the off-line conveying efficiency is improved, then the on-line efficiency and the spraying efficiency are improved, and the production efficiency of a production line is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to an automatic PVC spraying production line for automotive parts. Background Technology

[0002] In the automotive parts industry, sheet materials such as door panels and engine hoods are essential components of automobiles. After stamping, these sheet materials require PVC coating. However, in traditional PVC coating production lines, sheet material conveying uses rigid clamping mechanisms, achieving positioning and conveying by clamping the material's edges or specific areas. The clamping contact area creates absolute coating blind spots, requiring manual touch-up spraying, reducing efficiency. Furthermore, during manual touch-up spraying, deviations in spray gun distance and angle control can lead to localized over-spraying or under-spraying, resulting in lower product yield. In addition, the mechanical stress of the clamping mechanism can damage the surface of the sheet material, further reducing product yield. Summary of the Invention

[0003] The main objective of this invention is to propose an automated PVC spraying production line for automotive parts, aiming to solve the technical problems of low production efficiency caused by the use of clamping mechanisms in existing PVC spraying production lines, and the damage to sheet materials caused by clamping, which affects product yield.

[0004] To achieve the above objectives, the present invention proposes an automatic PVC spraying production line for automotive parts, comprising:

[0005] A feeding device for conveying a carrier that carries plate-shaped materials;

[0006] A spraying device is connected to a feeding device. The spraying device includes a spraying conveying mechanism and at least one multi-axis spraying mechanism movably disposed above the spraying conveying mechanism. The multi-axis spraying mechanism includes a spraying component, a multi-axis linkage component, a swinging component, and a rotating component. The multi-axis linkage component is movably connected to the rotating component, and the other end of the rotating component is connected to the swinging component. The swinging component is connected to the spraying component. The spraying component can move repeatedly under the drive of the multi-axis linkage component. The swinging component can drive the spraying component to swing, and the rotating component can drive the spraying component to rotate to change the spraying direction.

[0007] The unloading device is connected to the end of the spraying device away from the loading device. The unloading device includes a stacking mechanism and a turning mechanism connected in sequence. The stacking mechanism can stack multiple carriers, and the turning mechanism can adjust the conveying direction of the carriers.

[0008] In some embodiments, the rotating component includes a rotating slider slidably connected to the multi-axis linkage component. A rotating box is fixedly connected to the rotating slider on the other side opposite to the multi-axis linkage component. A rotating bearing is provided at the top of the rotating box, and a first clearance hole is constructed at the bottom of the rotating box. A rotating shaft passes through the rotating bearing, and the other end of the rotating shaft extends through the first clearance hole to the outside of the rotating box to connect to the swing component. A rotating motor connected to the rotating bearing is also provided inside the rotating box.

[0009] In some embodiments, the oscillating assembly includes a mounting base fixedly connected to the end of the rotating shaft away from the rotating box. A speed reducer is provided on the side of the mounting base. The speed reducer is connected to an oscillating motor. A flange is also provided between the oscillating motor and the speed reducer. An oscillating coupling is passed through the speed reducer. The oscillating coupling is connected to the spraying assembly.

[0010] In some embodiments, the spraying device further includes an enclosing protective frame, and the multi-axis linkage assembly includes two Y-axis guide rails disposed opposite to each other at the middle of both sides of the protective frame, a Y-axis moving frame disposed between the two Y-axis guide rails, and Y-axis moving components slidably connected to the Y-axis guide rails at both ends of the Y-axis moving frame.

[0011] In some embodiments, any of the Y-axis moving components includes a mounting plate perpendicularly disposed to the Y-axis moving frame. A clearance portion is constructed in the middle of the mounting plate. A Y-axis driving wheel is disposed at one end of the clearance portion near the Y-axis moving frame, and a Y-axis driven wheel is disposed at the other end of the clearance portion. A Y-axis synchronous belt is sleeved between the Y-axis driving wheel and the Y-axis driven wheel. A Y-axis slider is horizontally disposed in the middle of the mounting plate. The Y-axis slider is slidably connected to the top of the Y-axis guide rail. A guide member is bolted to the side of the Y-axis guide rail facing the mounting plate. A plurality of first toothed structures are constructed at the bottom of the guide member. A guide wheel is connected to one side of the Y-axis driven wheel. A plurality of second toothed structures adapted to the first toothed structures are correspondingly disposed circumferentially on the guide wheel.

[0012] In some embodiments, the Y-axis movable frame is provided with an X-axis guide rail, the X-axis guide rail is parallel to the conveying mechanism and perpendicular to the Y-axis guide rail, the X-axis guide rail is slidably connected to the X-axis movable frame, the X-axis movable frame is vertically provided with a Z-axis guide rail, the Z-axis guide rail is perpendicular to the conveying mechanism, and the rotating component is slidably connected to the Z-axis guide rail.

[0013] In some embodiments, the stacking mechanism includes a stacking speed chain and two lifting components symmetrically arranged on opposite sides of the stacking speed chain, each of the lifting components including a support plate and a lifting component connected to the support plate.

[0014] In some embodiments, the steering mechanism includes a steering input belt line, a steering output belt line perpendicular to the steering input belt line, and a steering assembly. Two sets of both the steering input belt line and the steering output belt line are provided. The steering input belt line is located between the two steering output belt lines, and the steering assembly is located between the two steering input belt lines. The steering assembly includes a rotary table and a rotation drive connected to the rotary table. The rotary table is used to carry a vehicle and can rotate relative to the steering input belt line.

[0015] In some embodiments, the steering mechanism further includes a lifting platform disposed below the rotary table, the lifting platform being connected to a lifting drive component, and a rotating component being disposed between the rotary table and the lifting platform.

[0016] In some embodiments, the spraying apparatus is further provided with a waste recycling mechanism, which includes a waste conveyor belt. The waste conveyor belt is located at one end of the spraying apparatus near the unloading device and below the spraying conveyor mechanism. The waste conveyor belt extends to one end and connects to a waste container. A first scraper assembly for scraping waste is provided between the waste conveyor belt and the spraying conveyor mechanism. A second scraper assembly is provided at the bottom of the waste conveyor belt and is located above the waste container.

[0017] The feeding device of this application can transport a carrier carrying plate-shaped materials to the spraying device. The spraying conveyor mechanism transports the carrier and materials. The multi-axis spraying mechanism, which is movably mounted above the spraying conveyor mechanism, can move and spray. The spraying components of the multi-axis spraying mechanism can move in multiple axes under the drive of the multi-axis linkage component, and change the spraying orientation and angle under the coordinated control of the rotating component and the swinging component, thereby improving spraying efficiency and spraying effect, and thus improving production efficiency. The material is carried on the carrier and transported, avoiding the phenomenon of clamping blind spots and avoiding damage from rigid contact, further improving product yield. The sprayed plate-shaped materials are carried by the carrier and continue to be transported to the unloading device. The stacking mechanism can stack multiple carriers, and the turning mechanism can rotate to adjust the direction, which facilitates transportation and improves the off-line transportation efficiency. This is beneficial to improving the efficiency of the front-end loading and spraying, and further improving the production efficiency of the production line. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the automatic PVC spraying production line for automotive parts according to this application;

[0019] Figure 2 This is a schematic diagram of the structure of an embodiment of the multi-axis spraying mechanism of this application;

[0020] Figure 3This is a schematic diagram of the structure of an embodiment of the multi-axis spraying mechanism of this application;

[0021] Figure 4 for Figure 3 Enlarged diagram of section A in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of one embodiment of the rotating component of this application;

[0023] Figure 6 This is a schematic diagram of the structure of one embodiment of the rotating component of this application;

[0024] Figure 7 This is a schematic diagram of the structure of the swing assembly and the spraying assembly of this application;

[0025] Figure 8 This is a schematic diagram of the structure of one embodiment of the stacking mechanism of this application;

[0026] Figure 9 This is a schematic diagram of the structure of one embodiment of the steering mechanism of this application;

[0027] Figure 10 This is a schematic diagram of the structure of one embodiment of the steering mechanism of this application;

[0028] Figure 11 This is a partial structural schematic diagram of an embodiment of the waste recycling mechanism of this application;

[0029] Figure 12 for Figure 11 A schematic diagram of the AA cross section.

[0030] Explanation of icon numbers:

[0031] Detailed Implementation

[0032] The solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application 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 indicator will also change accordingly.

[0034] 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.

[0035] Furthermore, the use of terms such as "first" and "second" in this application 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 as "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 in this application.

[0036] Please refer to Figure 1 and Figure 2 This application provides an automatic PVC spraying production line 100 for automotive parts, comprising:

[0037] The feeding device 200 is used to convey a carrier that carries plate-shaped materials.

[0038] The spraying device 300 is connected to the feeding device 200. The spraying device 300 includes a spraying conveying mechanism 310 and a multi-axis spraying mechanism 320 movably disposed above the spraying conveying mechanism 310. The multi-axis spraying mechanism 320 includes a spraying component 321, a multi-axis linkage component 322, a swing component 323, and a rotating component 324. The multi-axis linkage component 322 is movably connected to the rotating component 324. The other end of the rotating component 324 is connected to the swing component 323. The swing component 323 is connected to the spraying component 321. The spraying component 321 can move repeatedly under the drive of the multi-axis linkage component 322. The swing component 323 can drive the spraying component 321 to swing. The rotating component 324 can drive the spraying component 321 to rotate to change the spraying direction.

[0039] The unloading device 400 is connected to the end of the spraying device 300 away from the loading device 200. The unloading device 400 includes a stacking mechanism 410 and a turning mechanism 420 connected in sequence. The stacking mechanism 410 can stack multiple carriers, and the turning mechanism 420 can adjust the conveying direction of the carriers.

[0040] The main function of the feeding device 200 is to feed the carrier and sheet material onto the coating unit 300 in a timely manner. The feeding device 200 can transport the carrier via a double-speed chain, roller conveyor, or belt conveyor. For example, the feeding device 200 uses a double-speed chain, which offers high conveying efficiency, increases the amount of material fed onto the line, and has a compact and durable structure with low maintenance costs. Furthermore, the double-speed chain directly contacts the carrier, avoiding rigid contact damage to the sheet material and improving product yield. Of course, the above is only an example; the specific type can be determined according to actual needs, as long as linear conveying of the carrier and sheet material can be achieved. This application does not impose any restrictions.

[0041] The main function of the spraying device 300 is to automatically spray PVC onto sheet materials. It interfaces with the feeding device 200, enabling it to promptly receive the carriers and sheet materials conveyed by the feeding device 200 and perform PVC spraying, thus improving the production line's efficiency. The main function of the spraying conveyor mechanism 310 is to linearly transport the carriers and sheet materials, operating synchronously with the multi-axis spraying mechanism 320, spraying while moving, thereby increasing the production cycle. The spraying conveyor mechanism 310 uses a belt conveyor, which not only smoothly transports the carriers and sheet materials but also carries waste, preventing waste from directly contacting the ground and causing environmental pollution.

[0042] The main function of the multi-axis spraying mechanism 320 is to spray PVC onto sheet-like materials, and at least one set is provided. That is, the number of multi-axis spraying mechanisms 320 can be 1, 2, 3, or 4 sets, etc. For example, to improve spraying efficiency, four sets of multi-axis spraying mechanisms 320 can be provided to spray PVC onto sheet-like materials simultaneously. Of course, the above is only an example, and the specific number can be determined according to actual needs, which is not limited in this application.

[0043] The spraying assembly 321, as a component for directly spraying PVC onto sheet-like materials, is connected to a swing assembly 323. Driven by the swing assembly 323, it can swing while spraying, increasing the spraying range and thus improving the spraying effect. The other end of the swing assembly 323 is connected to a rotating assembly 324, which drives the swing assembly 323 to rotate, thereby causing the spraying assembly 321 to rotate and change the spraying direction, achieving multi-directional and multi-angle spraying. This allows the spraying assembly 321 to spray PVC into the dead corners of the sheet-like material, improving spraying integrity. The rotating assembly 324 is connected to a multi-axis linkage assembly 322, which drives it to move in multiple directions, thereby moving the spraying assembly 321 to achieve a larger spraying area, covering the surface of sheet-like materials of different sizes and different areas of the sheet-like material surface, further improving spraying efficiency.

[0044] In this embodiment, the multi-axis linkage component 322 can drive the spraying component 321 to achieve linear repetitive movement along the X, Y, or Z axes. For example, by driving the spraying component 321 to move along the X axis, omnidirectional spraying can be achieved along the length of the plate-shaped material; by driving the spraying component 321 to move along the Y axis, large-area spraying can be achieved along the width of the plate-shaped material; and by driving the spraying component 321 to move along the Z axis, spraying uniformity and surface quality can be improved.

[0045] The main function of the unloading device 400 is to transport the PVC-coated sheet material to the subsequent process. The stacking mechanism 410 can stack multiple carriers and sheet materials to improve conveying efficiency. For example, the stacking mechanism 410 can stack two carriers and sheet materials to form a double-layer stacking structure, conveying more sheet material at once, avoiding line stoppage due to full material, which would affect the feeding and coating of the upstream section, and improving the overall efficiency of the production line. The turning mechanism 420 docks with the stacking mechanism 410, can accept multiple stacked carriers and sheet materials, and simultaneously rotates and adjusts their direction to facilitate conveying to the subsequent process.

[0046] The feeding device 200 of this application can transport a carrier carrying plate-shaped materials to the spraying device 300. The spraying conveyor 310 transports the carrier and materials. The multi-axis spraying mechanism 320, which is movably mounted above the spraying conveyor 310, can move and spray. The spraying component 321 of the multi-axis spraying mechanism 320 can move in multiple axes under the drive of the multi-axis linkage component 322, and change the spraying orientation and angle under the coordinated control of the rotating component 324 and the swing component 323, thereby improving spraying efficiency and spraying effect, and thus improving production efficiency. The materials are transported on the carrier, avoiding the phenomenon of clamping blind spots and avoiding damage from rigid contact, further improving product yield. The plate-shaped materials that have been sprayed are carried by the carrier and continue to be transported to the unloading device 400. The stacking mechanism 410 can stack multiple carriers, and the turning mechanism 420 rotates to adjust the direction, which facilitates transportation and improves the off-line transportation efficiency. This is beneficial to improving the efficiency of the front-end assembly and spraying, and further improving the production efficiency of the production line.

[0047] Please refer to Figure 2 , Figure 5 as well as Figure 6The rotating component 324 includes a rotating slider 3241 slidably connected to the multi-axis linkage component 322. A rotating box 3242 is fixedly connected to the other side of the rotating slider 3241 opposite to the multi-axis linkage component 322. A rotating bearing 3243 is provided at the top of the rotating box 3242. A first clearance hole 3421 is constructed at the bottom of the rotating box 3242. A rotating shaft 3244 passes through the rotating bearing 3243. The other end of the rotating shaft 3244 extends through the first clearance hole 3421 to the outside of the rotating box 3242 to connect to the swing component 323. A rotating motor 3245 connected to the rotating bearing 3243 is also provided inside the rotating box 3242.

[0048] In this embodiment, the rotating box 3242 serves as the carrier of the rotating assembly 324. Internally, it integrates a power source and transmission components. Externally, it provides rotational space for the rotating shaft 3244 through the first clearance hole 3421, allowing the rotating shaft 3244 to connect to the swing assembly 323 and the spraying assembly 321, thereby driving the spraying assembly 321 to adjust the spraying direction. The rotating box 3242 can be made of materials such as aluminum alloy or stainless steel. For example, if the rotating box 3242 is made of aluminum alloy, it is lightweight, reducing rotational inertia and lowering the motor load. Aluminum alloy also has good heat dissipation properties, allowing the heat generated by the motor during long-term operation to be quickly dissipated through the aluminum alloy shell, preventing the rotating bearing 3243 at the front of the rotating box 3242 from failing due to high temperatures. Of course, the above is merely an example; the specific material can be determined according to actual needs, and this application does not impose any limitations.

[0049] A rotating bearing 3243 is fitted with a rotating shaft 3244, supporting the rotating shaft 3244 and bearing radial and axial loads. The other end of the rotating shaft 3244 extends outside the housing and connects to the swing assembly 323, transmitting torque and supporting the swing assembly 323 to rotate 360 ​​degrees in the horizontal direction, thereby driving the rotation of the spraying assembly 321, changing the spraying direction, and realizing multi-directional spraying.

[0050] Please refer to Figure 7 The swing assembly 323 includes a mounting base 3231 fixedly connected to the end of the rotating shaft 3244 away from the rotating box 3242. A reducer 3232 is provided on the side of the mounting base 3231. The reducer 3232 is connected to the swing motor 2334. A flange 3233 is also provided between the swing motor 2334 and the reducer 3232. The reducer 3232 is provided with a swing coupling 3235. The swing coupling 3235 is connected to the spraying assembly 321.

[0051] Mounting base 3231 is fixedly connected to the end of rotating shaft 3244 away from rotating box 3242, serving as the basic support structure for swing assembly 323, ensuring rigid connection with rotating assembly 324, and being able to rotate synchronously with rotating assembly 324, thereby driving spraying assembly 321 to change spraying direction.

[0052] The speed reducer 3232 is mounted on the side of the mounting base 3231 to reduce the output speed of the swing motor 2334 while increasing the torque, ensuring the stability and driving force of the swing motion. The speed reducer 3232 can be an NMRV040 model. Of course, the above is only an example; the specific model can be determined according to actual needs, and this application does not impose any restrictions.

[0053] The oscillating motor 2334 is connected to the reducer 3232 and fixed to the reducer 3232 via flange 3233, providing a power source for the oscillating motion. The oscillating coupling 3235 passes through the reducer 3232 and is directly connected to the spraying assembly 321, transmitting the oscillating power. After the oscillating motor 2334 starts, it transmits the rotational power to the reducer 3232 via flange 3233. The reducer 3232 reduces the speed and amplifies the torque, and then transmits the power to the spraying assembly 321 via the oscillating coupling 3235 to perform regular oscillation, thereby covering a larger spraying area or adjusting the spraying angle.

[0054] This application uses a swing motor 2334 and a reducer 3232 to drive a swing coupling 3235 to swing, thereby causing the spraying assembly 321 to swing back and forth in the horizontal direction. This avoids blind spots caused by a fixed angle, such as the edges or corners of sheet materials, and can also adapt to the surface coverage requirements of sheet materials of different sizes. For example, when the sheet material is large, the swing can expand the lateral coverage of a single spray, reduce the number of times the spray gun moves, and improve efficiency. Secondly, the swing motion can make the PVC coating deposit more evenly on the surface of the sheet material, avoiding local coating accumulation or thinning caused by a fixed spray gun position, and optimizing the uniformity of spraying. In addition, the swing angle and frequency can be flexibly adjusted by the controller to adapt to sheet materials of different sizes. For example, small-sized materials can be accurately sprayed by small-angle high-frequency swing, while large-sized materials can be covered with large-area surface by large-angle low-frequency swing, reducing coating waste. Finally, the swing component 323 can work in conjunction with the multi-axis linkage component 322 and the rotation component 324 to realize complex spraying trajectories in three-dimensional space, and can also meet the spraying needs of special materials such as curved surfaces and irregularly shaped parts, further improving the flexibility of the production line.

[0055] Please continue to refer to this. Figure 7 A swing limit block 3236 is sleeved on one end of the swing coupling 3235. The swing limit block 3236 abuts against the end of the reducer 3232. Two limit posts are spaced apart on the end of the reducer 3232 opposite to the end of the swing limit block 3236. The swing limit block 3236 is located between the two limit posts.

[0056] The swing limit block 3236 is fitted onto the swing coupling 3235 and can rotate synchronously with the swing coupling 3235. During rotation, it can abut against any limit post to achieve swing limit. The physical limitation of the swing limit block 3236 and the limit post prevents the swing coupling 3235 from rotating excessively, avoids the spraying assembly 321 from colliding with surrounding mechanisms, and at the same time prevents the gear of the reducer 3232 from impact wear caused by over-travel rotation, thus extending the service life of the device.

[0057] Please refer to Figures 1 to 3 The spraying device 300 also includes an enclosing protective frame. The multi-axis linkage component 322 includes two Y-axis guide rails 3221 that are arranged opposite to each other in the middle of the two sides of the protective frame. A Y-axis moving frame 3222 is arranged between the two Y-axis guide rails 3221. Both ends of the Y-axis moving frame 3222 are provided with Y-axis moving components 3223 that are slidably connected to the Y-axis guide rails 3221.

[0058] The main function of the Y-axis guide rail 3221 is to provide guidance for the Y-axis moving frame 3222. It extends along the conveying direction of the spraying conveyor mechanism 310 so that the moving direction of the Y-axis moving frame 3222 is the same as the conveying direction of the plate material, realizing simultaneous movement and spraying, and improving spraying efficiency. The Y-axis moving frame 3222 has a beam structure, and Y-axis moving components 3223 that are slidably connected to the two Y-axis guide rails 3221 are respectively provided at both ends.

[0059] The Y-axis moving component 3223 enables the Y-axis moving frame 3222 to slide a long distance along the Y-axis guide rail 3221. When the spraying conveyor mechanism 310 is running continuously, the Y-axis moving frame 3222 can move synchronously with the plate material at a relative speed, avoiding the plate material from stopping and waiting for spraying, and improving the production line cycle time.

[0060] Please refer to Figure 4 Any Y-axis moving assembly 3223 includes a mounting plate 32231 perpendicularly disposed to the Y-axis moving frame 3222. A clearance portion 32232 is constructed in the middle of the mounting plate 32231. A Y-axis driving wheel is disposed at one end of the clearance portion 32232 near the Y-axis moving frame 3222, and a Y-axis driven wheel 32234 is disposed at the other end of the clearance portion 32232. A Y-axis synchronous belt 32235 is sleeved between the Y-axis driving wheel and the Y-axis driven wheel 32234. The mounting plate 32231... A Y-axis slider 3225 is horizontally arranged in the middle. The Y-axis slider 3225 is slidably connected to the top of the Y-axis guide rail 3221. A guide member 3224 is bolted to the side of the Y-axis guide rail 3221 facing the mounting plate 32231. Multiple first tooth-shaped structures are constructed at the bottom of the guide member 3224. A guide wheel 32236 is connected to one side of the Y-axis driven wheel 32234. Multiple second tooth-shaped structures that are adapted to the first tooth-shaped structures are arranged in the circumference of the guide wheel 32236.

[0061] Mounting plate 32231 is located on the outside of the two Y-axis guide rails 3221 and has a through clearance part 32232. In the numerical direction, the upper end of the clearance part 32232 is provided with a Y-axis driving wheel and the lower end is provided with a Y-axis driven wheel 32234. The Y-axis driving wheel and the Y-axis driven wheel 32234 are fitted with a Y-axis synchronous belt 32235. The drive motor is connected to the Y-axis driving wheel and can synchronously drive the Y-axis synchronous belt 32235 and the Y-axis driven wheel 32234 to move.

[0062] A guide wheel 32236 is connected to one side of the Y-axis driven wheel 32234. Specifically, the guide wheel 32236 is located between the Y-axis driven wheel 32234 and the Y-axis guide rail 3221. A guide member 3224 is bolted to the side of the Y-axis guide rail 3221 facing the mounting plate 32231. The bottom of the guide member 3224 has multiple first tooth-like structures, and the guide wheel 32236 has multiple second tooth-like structures that are adapted to the first tooth-like structures in its circumferential direction. When the Y-axis driven wheel 32234 is driven to move, the guide wheel 32236 is driven to rotate synchronously. The second tooth-like structures of the guide wheel 32236 mesh with the first tooth-like structures of the guide member 3224, which can play a guiding role. At the same time, due to the tooth-like structure, the tooth surfaces have rolling friction, resulting in lower energy loss compared to belt drive and chain drive.

[0063] A Y-axis slider 3225 is horizontally mounted in the middle of the mounting plate 32231, and is slidably connected to the top of the Y-axis guide rail 3221. When the drive motor starts, the Y-axis drive wheel drives the Y-axis driven wheel 32234 to rotate, thereby driving the guide wheel 32236 to rotate along the guide member 3224, realizing the movement of the Y-axis moving frame 3222 along the Y-axis guide rail 3221. At the same time, the Y-axis slider 3225 is synchronously driven to slide along the top of the Y-axis guide rail 3221, further improving the movement accuracy of the Y-axis moving frame 3222, thereby improving the movement accuracy of the spraying assembly 321 and improving spraying efficiency and effect.

[0064] Please refer to Figure 2 The Y-axis moving frame 3222 is provided with an X-axis guide rail 3226, which is parallel to the conveying mechanism and perpendicular to the Y-axis guide rail 3221. The X-axis moving frame 3227 is slidably connected to the X-axis guide rail 3226. The X-axis moving frame 3227 is vertically provided with a Z-axis guide rail 3228, which is perpendicular to the conveying mechanism. The rotating component 324 is slidably connected to the Z-axis guide rail 3228.

[0065] The X-axis guide rail 3226 is fixed to the upper surface of the Y-axis moving frame 3222, perpendicular to the Y-axis guide rail 3221 and parallel to the spraying conveyor mechanism 310 to form a two-dimensional planar motion. The X-axis moving frame 3227 is vertically connected to the X-axis guide rail 3226 and can slide relative to the X-axis guide rail 3226, driving the spraying assembly 321 to move left and right repeatedly.

[0066] In this embodiment, the Y-axis moving frame 3222 is responsible for long-distance movement along the conveying direction of the plate-shaped material, and the X-axis moving frame 3227 is responsible for lateral movement in the width direction of the plate-shaped material. The combination of the two forms a "planar rectangular coordinate system" motion, enabling the spraying assembly 321 to spray the entire surface of regular plate-shaped materials such as rectangles and squares. In addition, compared with the independent X / Y axis truss structure, the design of stacking the X-axis guide rail 3226 on the Y-axis moving frame 3222 is more compact, which helps to reduce equipment costs and space occupation.

[0067] Please continue to refer to this. Figure 2 The Z-axis guide rail 3228 is fixed to the front end of the X-axis moving frame 3227, perpendicular to the spraying conveyor mechanism 310, and perpendicular to both the X-axis guide rail 3226 (horizontal transverse) and the Y-axis guide rail 3221 (horizontal longitudinal), forming the Z-axis of a Cartesian coordinate system. The rotating slider 3241 is slidably connected to the Z-axis guide rail 3228, driving the spraying assembly 321 to move up and down along the Z-axis guide rail 3228 to adjust the distance between the spraying assembly 321 and the surface of the sheet material, adapting to the spraying requirements of sheet materials of different specifications. Furthermore, the Z-axis height can be quickly adjusted via a preset controller, allowing for the processing of sheet materials of different thicknesses without hardware replacement, enhancing the flexibility of the device and adapting to the production of sheet materials of various specifications.

[0068] Please refer to Figure 2 and Figure 7 The spraying assembly 321 includes two spray guns 3211, which are respectively connected to both ends of a swing coupling 3235. When the swing motor 2334 starts, the reducer 3232 drives the swing coupling 3235 to rotate repeatedly, thereby causing the spray guns 3211 at both ends to synchronously perform a fan-shaped swing motion, expanding the spraying range. The two spray guns 3211 also increase the amount of paint sprayed at one time, improving spraying efficiency. The type of spray gun 3211 can be an air spray gun, an airless spray gun, etc. Specifically, it can be determined according to actual needs, and this application does not impose any restrictions.

[0069] In this embodiment, the swing assembly 323 also includes a protective box. The mounting base 3231, reducer 3232, flange 3233 and swing motor 2334 are located inside the protective box. A second clearance hole is provided on the top of the protective box. The rotating shaft 3244 passes through the second clearance hole and is connected to the mounting base 3231. A third clearance hole adapted to the swing coupling 3235 is provided on both sides of the protective box.

[0070] The main function of the protective box is to serve as a protective and mounting carrier for the swing assembly 323. Its material can be aluminum alloy or stainless steel. For example, aluminum alloy is lightweight, which reduces the load on the swing motor 2334. Aluminum alloy also has good heat dissipation properties, allowing the heat generated by the swing motor 2334 during prolonged operation to be quickly dissipated through the aluminum alloy casing, preventing internal components from failing due to high temperatures. Of course, the above is merely an example; specific designs can be determined according to actual needs, and this application does not impose any limitations.

[0071] Different sizes of sheet materials require different PVC coating thicknesses. When a thicker PVC coating is needed, the number of multi-axis spraying mechanisms 320 needs to be increased and activated by a controller. In this embodiment, at least four sets of multi-axis spraying mechanisms 320 are provided, and the four sets of multi-axis spraying mechanisms 320 are distributed at intervals along the conveying direction of the spraying conveying mechanism 310.

[0072] This can be understood as each multi-axis spraying mechanism 320 being able to independently complete complex spraying actions. When the sheet material carried by the spraying conveyor 310 is of a different specification than the previous one and enters the spraying area, the controller will determine the required PVC spraying thickness according to a preset program. If a thinner coating is required, only some of the multi-axis spraying mechanisms 320 are activated, such as the first and third groups. Under the controller's command, they precisely spray the sheet material through the coordinated operation of the multi-axis linkage component 322, the swing component 323, and the rotation component 324. When a thicker PVC coating is required, the controller will activate more multi-axis spraying mechanisms 320, such as all four groups. These multi-axis spraying mechanisms 320 work simultaneously according to set parameters, achieving the target coating thickness through multi-layer superposition. Throughout the process, each multi-axis spraying mechanism 320 dynamically adjusts its spraying parameters and motion trajectory according to the conveying speed of the sheet material to ensure uniform PVC coating coverage.

[0073] The configuration of multiple multi-axis spraying mechanisms 320 enables the production line to easily handle the PVC spraying thickness requirements of sheet materials of different specifications. Whether it is a small part with a thin coating or a large structural component that requires a thick coating, precise spraying can be achieved by flexibly starting and stopping the multi-axis spraying mechanism 320. This avoids the problem of being unable to meet diverse needs due to fixed equipment configuration, and greatly improves the versatility and flexibility of the production line.

[0074] Please refer to Figure 8 The stacking mechanism 410 includes a stacking speed chain 411 and two lifting components 412 symmetrically arranged on opposite sides of the stacking speed chain 411. Each lifting component 412 includes a lifting plate 4121 and a lifting component 4122 connected to the lifting plate 4121.

[0075] The stacking mechanism 410 interfaces with the spraying device 300, enabling the stacking of PVC-coated sheets along with the carrier for easy transport. Specifically, the lifting plate 4121 directly contacts the carrier, responsible for lifting it. The lifting assembly 4122 is the core component for achieving vertical lifting of the carrier. The drive source for the lifting assembly 4122 can be a cylinder or a combination of a flat belt and a motor, as long as precise lifting motion control can be achieved, ensuring that the lifting plate 4121 can smoothly and accurately lift the carrier to the designated height. This application does not impose any restrictions here.

[0076] As a key component of the load-bearing vehicle, the lifting plate 4121 can be made of a high-strength, wear-resistant metal material, such as stainless steel. Furthermore, the lifting plate 4121 can be a rectangular flat plate structure, capable of evenly bearing the weight of the material and preventing deformation due to uneven stress. Of course, the above is merely an example; specific designs can be determined according to actual needs, and this application does not impose any limitations.

[0077] When a carrier carrying sheet material pre-coated with PVC is conveyed to the stacking speed chain 411 via the spraying conveyor mechanism 310, the lifting plate 4121 of the stacking mechanism 410, driven by the lifting component 4122, smoothly lifts the carrier located on the stacking speed chain 411, causing the carrier to detach from the surface of the stacking speed chain 411. At this time, the carrier at the front of the stacking mechanism 410 continues to be conveyed forward to the stacking speed chain 411, entering the space below the lifted carrier. After the carrier is in place, the lifting component 4122 drives the lifting plate 4121 to descend, so that the upper carrier is stably stacked on top of the lower carrier, forming a double-layer stacking structure, improving the conveying efficiency of the front end, facilitating the rapid loading and spraying of sheet material, and increasing the production line cycle time. Subsequently, the stacking speed chain 411 continues to operate, conveying the double-layer stacked carrier and sheet material together to the subsequent turning mechanism 420.

[0078] Please refer to Figure 9 and Figure 10 The steering mechanism 420 includes a steering input belt line 421, a steering output belt line 422 perpendicular to the steering input belt line 421, and a steering assembly 423. There are two sets of steering input belt lines 421 and steering output belt lines 422. The steering input belt line 421 is located between the two steering output belt lines 422. The steering assembly 423 is located between the two steering input belt lines 421. The steering assembly 423 includes a rotary table 4231 and a rotary drive member 4232 connected to the rotary table 4231. The rotary table 4231 is used to support the vehicle and can rotate relative to the steering input belt line 421.

[0079] Specifically, when the double-stacked carriers contact the steering input belt 421, the plate-shaped material carried by them is conveyed from the steering input belt 421 to a preset position on the steering mechanism 420, awaiting steering. The main function of the steering output belt 422 is to transport the carriers and plate-shaped material off the line. The steering output belt 422 is perpendicular to the steering input belt 421. After the carriers have turned, when they contact the steering output belt 422, the plate-shaped material carried by them is conveyed off the line via the steering output belt 422. The perpendicular arrangement of the steering input belt 421 and the steering output belt 422, utilizing the rectangular frame structure, enables material steering and transfer within a limited space, reducing the production line footprint. This is suitable for compact layouts with multiple processes in automotive parts production, improving space utilization.

[0080] The main function of the steering assembly 423 is to rotate the carrier and plate-shaped material, adjusting their direction for steering and conveying. It is positioned between the two steering input belt lines 421 and integrated with both the steering input belt line 421 and the steering output belt line 422, enhancing the compact design of the steering mechanism 420. The steering assembly 423 includes a rotary table 4231 for carrying the carrier and a rotary drive 4232. When the carrier is conveyed from the steering input belt line 421 to the position of the rotary table 4231, the rotary drive 4232 drives the rotary table 4231 to rotate 90°, aligning the carrier's forward direction with the steering output belt line 422, enabling steering and conveying of the material. The rotary drive 4232 can be a motor or a gear transmission structure, as long as it enables the rotary table 4231 to rotate; this application does not impose any limitations on this.

[0081] Please continue to refer to this. Figure 9 and Figure 10 The steering mechanism 420 also includes a lifting platform 424 located below the rotary table 4231. The lifting platform 424 is connected to a lifting drive component 425, and a rotating component 426 is provided between the rotary table 4231 and the lifting platform 424.

[0082] In this embodiment, the lifting platform 424 has a rectangular structure. On the side of the lifting platform 424 facing the rotating platform 4231, two support columns 533 are spaced apart on either side. The bottom of the support column 533 is fixed to the surface of the lifting platform 424, and its top can contact the rotating platform 4231, thus supporting the rotating platform 4231 and preventing it from collapsing. When the lifting platform 424 rises, the support column 533 simultaneously lifts the rotating platform 4231, bearing the weight of the rotating platform 4231 and the vehicle. During rotation, the support column 533, through rigid contact, counteracts the radial force and overturning moment of the rotating platform 4231, preventing platform deformation or tilting and ensuring the positional stability of the vehicle when turning.

[0083] The lifting drive component 425 can be a cylinder, hydraulic cylinder, or electric push rod, etc., which drives the lifting platform 424 to move up and down through linear motion. As long as the lifting platform 424 can move up and down, it is acceptable. The specific type can be determined according to actual needs, and this application does not impose any restrictions.

[0084] The rotary table 4231 and the lifting table 424 are connected by a rotating component 426. A rotating drive component 4232 is connected to the rotating component 426. The rotating drive component 4232 drives the rotating component 426 to rotate, and the rotating component 426 drives the rotary table 4231 to rotate, thereby adjusting the orientation of the carrier and the material. For example, the rotating component 426 is a bearing.

[0085] The carrier is conveyed by the steering input belt 421 to a position directly above the rotary table 4231, where it rests. The lifting drive 425 activates, pushing the lifting platform 424 upwards, which in turn raises the rotary table 4231, allowing it to lift the carrier. The bottom surface of the carrier disengages from the contact surface of the steering input belt 421, eliminating the influence of the belt's movement on the carrier and preparing for rotation. Once the lifting platform 424 reaches the designated height, the rotation drive 4232 activates, rotating the rotary table 4231 90°, adjusting the carrier and plate material to be parallel to the steering output belt 422. After rotation, the lifting drive 425 reverses its direction, lowering the lifting platform 424 until the bottom surface of the carrier contacts the steering output belt 422. The steering output belt 422 then activates, conveying the carrier and plate material to the next process, completing the steering transfer.

[0086] By setting up the lifting platform 424 and the lifting drive component 425, the rotary table 4231 can be made to not interfere with the transportation of the vehicle on the steering input belt line 421 or the transportation of the vehicle on the steering output belt line 422 when it is not in use, thereby improving the stability of the mechanism.

[0087] Please refer to Figure 11 and Figure 12 The spraying device 300 is also provided with a waste recycling mechanism 330. The waste recycling mechanism 330 includes a waste conveyor belt 331. The waste conveyor belt 331 is located at one end of the spraying device 300 near the unloading device 400 and below the spraying conveying mechanism 310. The waste conveyor belt 331 extends to one end and connects to a waste container 332. A first scraper group 333 for scraping waste is provided between the waste conveyor belt 331 and the spraying conveying mechanism 310. A second scraper group 334 is provided at the bottom of the waste conveyor belt 331 and is located above the waste container 332.

[0088] The portion of the waste conveyor belt 331 located below the spraying conveyor mechanism 310 is horizontally positioned, while the portion extending out of the spraying conveyor mechanism 310 is inclined upwards to connect with the waste container 332. The conveying direction of the waste conveyor belt 331 is perpendicular to the conveying direction of the spraying conveyor mechanism 310.

[0089] Taking the spraying conveyor 310 as an example, the first scraper group 333 is detachably installed below the spraying conveyor 310. When the waste material remaining on the conveyor belt moves to the bottom with the conveyor belt, the waste material touches the first scraper group 333 and is thus separated from the conveyor belt by the first scraper group 333 and drips onto the waste conveyor belt 331.

[0090] The first scraper assembly 333 can be detachably mounted with bolts. Bolt mounting can improve the connection stability between the first scraper assembly 333 and the spraying conveyor mechanism 310, and also facilitates disassembly and replacement in the later stage, thus improving maintenance efficiency.

[0091] The second scraper assembly 334 is detachably installed at the bottom of the waste conveyor belt 331 and above the waste container 332. When the waste arrives above the waste container 332 along with the waste conveyor belt 331, it is scraped off by the second scraper assembly 334 at the bottom and falls into the waste container 332, thus completing the centralized collection.

[0092] The second scraper assembly 334 can be detachably mounted with bolts. Bolt mounting can improve the connection stability between the second scraper assembly 334 and the waste conveyor belt 331, and also facilitates disassembly and replacement in the later stage, thus improving maintenance efficiency.

[0093] The waste recycling mechanism 330 enables real-time collection of waste during the spraying process, preventing waste accumulation on the spraying conveyor mechanism 310 and avoiding surface contamination of sheet materials or equipment jamming due to falling waste. Furthermore, the automated scraping and conveying design significantly reduces the frequency of manual cleaning. Uncured PVC waste can be filtered and reused, achieving resource recycling.

[0094] In this embodiment, multiple feeding containers are provided on one side of the waste container 332. The multiple feeding containers and the waste container 332 are arranged in an insulation chamber, which can insulate the PVC in the feeding containers to prevent solidification and failure to spray properly, and insulate the recycled waste PVC to facilitate reuse. The waste container 332 and the feeding containers can be container barrels.

[0095] In embodiments of the present invention, a controller is also provided, electrically connected to the feeding device 200, the spraying device 300, and the unloading device 400. The controller is used to drive the feeding device 200 to convey the carrier and the plate-shaped material to the spraying device 300, to drive the spraying device 300 to work, and to drive the unloading device 400 to unload the plate-shaped material that has been sprayed with PVC.

[0096] The main function of a controller is to control the operation of various devices and achieve automated control. For example, a controller can be a PLC. PLCs are stable and reliable, suitable for harsh factory environments; they are highly flexible, with highly modular hardware and software functions, allowing for combination and expansion according to actual needs; and they have a fast response speed, enabling rapid execution of instructions and improving painting efficiency. Of course, the above is only an example, and the specific controller can be determined according to actual needs; this application does not impose any limitations.

[0097] To facilitate operation by on-site personnel, the controller includes a human-machine interface (HMI) terminal located at one end of the spraying unit 300. The HMI terminal adopts an integrated design, typically consisting of a display screen, operation buttons, and a data interface. By integrating complex device control functions into one end of the spraying unit 300, on-site personnel can complete parameter settings, mode switching, and other operations without having to travel between different parts of the production line, significantly reducing device debugging and preparation time. Furthermore, the HMI terminal allows for rapid adjustment of spraying parameters to adapt to the production needs of different sized sheet materials, enabling flexible production of small batches and multiple varieties.

[0098] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. An automatic PVC spraying production line for automotive parts, characterized in that, include: A feeding device for conveying a carrier that carries plate-shaped materials; A spraying device is connected to a feeding device. The spraying device includes a spraying conveying mechanism and at least one multi-axis spraying mechanism movably disposed above the spraying conveying mechanism. The multi-axis spraying mechanism includes a spraying component, a multi-axis linkage component, a swinging component, and a rotating component. The multi-axis linkage component is movably connected to the rotating component, and the other end of the rotating component is connected to the swinging component. The swinging component is connected to the spraying component. The spraying component can move repeatedly under the drive of the multi-axis linkage component. The swinging component can drive the spraying component to swing, and the rotating component can drive the spraying component to rotate to change the spraying direction. The unloading device is connected to the end of the spraying device away from the loading device. The unloading device includes a stacking mechanism and a turning mechanism connected in sequence. The stacking mechanism can stack multiple carriers, and the turning mechanism can adjust the conveying direction of the carriers.

2. The automatic PVC spraying production line for automotive parts according to claim 1, characterized in that, The rotating component includes a rotating slider slidably connected to the multi-axis linkage component. A rotating box is fixedly connected to the rotating slider on the other side opposite to the multi-axis linkage component. A rotating bearing is provided at the top of the rotating box. A first clearance hole is constructed at the bottom of the rotating box. A rotating shaft passes through the rotating bearing. The other end of the rotating shaft extends through the first clearance hole to the outside of the rotating box to connect to the swing component. A rotating motor connected to the rotating bearing is also provided inside the rotating box.

3. The automatic PVC spraying production line for automotive parts according to claim 2, characterized in that, The swing assembly includes a mounting base fixedly connected to the end of the rotating shaft away from the rotating box. A speed reducer is provided on the side of the mounting base. The speed reducer is connected to a swing motor. A flange is also provided between the swing motor and the speed reducer. A swing coupling is passed through the speed reducer. The swing coupling is connected to the spraying assembly.

4. The automatic PVC spraying production line for automotive parts according to claim 1, characterized in that, The spraying device also includes an enclosing protective frame. The multi-axis linkage assembly includes two Y-axis guide rails that are arranged opposite each other in the middle of both sides of the protective frame. A Y-axis moving frame is arranged between the two Y-axis guide rails. Both ends of the Y-axis moving frame are provided with Y-axis moving components that are slidably connected to the Y-axis guide rails.

5. The automatic PVC spraying production line for automotive parts according to claim 4, characterized in that, Any of the Y-axis moving components includes a mounting plate perpendicularly arranged to the Y-axis moving frame. A clearance portion is constructed in the middle of the mounting plate. A Y-axis driving wheel is provided at one end of the clearance portion near the Y-axis moving frame, and a Y-axis driven wheel is provided at the other end of the clearance portion. A Y-axis synchronous belt is sleeved between the Y-axis driving wheel and the Y-axis driven wheel. A Y-axis slider is horizontally arranged in the middle of the mounting plate. The Y-axis slider is slidably connected to the top of the Y-axis guide rail. A guide member is bolted to the side of the Y-axis guide rail facing the mounting plate. Multiple first toothed structures are constructed at the bottom of the guide member. A guide wheel is connected to one side of the Y-axis driven wheel, and multiple second toothed structures adapted to the first toothed structures are correspondingly arranged circumferentially on the guide wheel.

6. The automatic PVC spraying production line for automotive parts according to claim 5, characterized in that, The Y-axis moving frame is provided with an X-axis guide rail, which is parallel to the conveying mechanism and perpendicular to the Y-axis guide rail. The X-axis moving frame is slidably connected to the X-axis guide rail. The X-axis moving frame is vertically provided with a Z-axis guide rail, which is perpendicular to the conveying mechanism. The rotating component is slidably connected to the Z-axis guide rail.

7. The automatic PVC spraying production line for automotive parts according to claim 1, characterized in that, The stacking mechanism includes a stacking speed chain and two lifting components symmetrically arranged on opposite sides of the stacking speed chain. Each of the lifting components includes a support plate and a lifting component connected to the support plate.

8. The automatic PVC spraying production line for automotive parts according to claim 1, characterized in that, The steering mechanism includes a steering input belt line, a steering output belt line perpendicular to the steering input belt line, and a steering assembly. There are two sets of both the steering input belt line and the steering output belt line. The steering input belt line is located between the two steering output belt lines, and the steering assembly is located between the two steering input belt lines. The steering assembly includes a rotary table and a rotary drive connected to the rotary table. The rotary table is used to support the vehicle and can rotate relative to the steering input belt line.

9. The automatic PVC spraying production line for automotive parts according to claim 8, characterized in that, The steering mechanism also includes a lifting platform located below the rotary table, the lifting platform being connected to a lifting drive component, and a rotating component being provided between the rotary table and the lifting platform.

10. The automatic PVC spraying production line for automotive parts according to claim 1, characterized in that, The spraying device is also equipped with a waste recycling mechanism, which includes a waste conveyor belt. The waste conveyor belt is located at one end of the spraying device near the unloading device and below the spraying conveyor mechanism. The waste conveyor belt extends to one end and connects to a waste container. A first scraper set for scraping waste is provided between the waste conveyor belt and the spraying conveyor mechanism. A second scraper set is provided at the bottom of the waste conveyor belt and is located above the waste container.

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