Door plate front and back overturning paint spraying system

Abstract

The utility model discloses a door plate front and back overturning paint spraying system. And the door plate discharging mechanism can automatically take down the door plate subjected to paint spraying from the paint spraying turnover mechanism and place the door plate on a placement frame, convenience is provided for subsequent door plate drying, ventilation and storage, high automation is achieved, and the production efficiency is improved. The paint spraying turnover mechanism is used for turning over the door plate after one face is sprayed with paint to spray paint on the other face, and the paint spraying turnover mechanism adopts an air cylinder as driving power and has the advantages of being high in turnover speed, accurate in turnover position and the like. The conveying push rod mechanism conveys the door plate to the paint spraying room from the roller conveyor and fixes the door plate to the paint spraying turnover mechanism, so that the technological requirements are met or operation and machining are convenient. A placing frame in the door plank discharging mechanism is divided into a plurality of layers from top to bottom, the placing frame can guarantee automation, meanwhile, the same ventilation condition of each layer of wooden door plank is guaranteed, and the working efficiency and the uniformity of products are greatly guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of door processing, in particular to a front and back side flipping and painting system for door panels. Background Art

[0002] As an important branch of the home decoration and furniture industries, door panel painting, as a surface treatment technology, is mainly applied to industries such as furniture, construction, and automobiles. Door panel painting not only helps to improve the aesthetics and durability of products but also provides a certain degree of protection. In particular, uniform painting of wooden door panels can prevent water and moisture, avoiding deformation of the door panels. With the development of the economy, people's demand for housing is getting higher and higher, and the demand for the door panel painting industry has shown an increasing trend year by year. With the intensification of market competition, the quality of door panels has become the focus that various manufacturers compete to improve. From the selection of paint materials to the optimization of the painting process, the door panel painting industry is an important link in improving the quality of the final product. The rising costs of raw materials, labor, and equipment maintenance have brought pressure to door panel painting enterprises. At the same time, the painting industry poses a potential threat to the health of workers. If the protection is not in place, it will seriously affect the respiratory health of workers. Automated painting equipment has become an urgent need in the painting industry. Therefore, improvements are needed in this regard. Summary of the Invention

[0003] Aiming at the defects in the prior art such as labor costs and potential dangers of painting to the health of workers, the utility model provides a new front and back side flipping and painting system for door panels.

[0004] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] A front and back side flipping and painting system for door panels,

[0006] including a door panel loading and conveying system, a push rod conveying mechanism, a painting and flipping mechanism, and a door panel unloading mechanism;

[0007] The door panel loading and conveying system includes a loading mechanism and a roller conveying mechanism;

[0008] The roller conveying mechanism includes a frame, a driving device, a roller assembly, and a transmission assembly. The roller assembly is composed of rollers. The rollers are rotatably connected to the frame. The driving device is connected to one of the rollers, and the rollers are connected by means of the transmission assembly;

[0009] The push rod conveying mechanism includes a moving platform and a push rod cylinder. The moving platform is arranged at the end of the frame. The push rod cylinder is arranged on the frame and connected to the moving platform. A push plate is arranged on the side of the moving platform away from the door panel unloading mechanism;

[0010] The described door panel blanking mechanism includes a telescopic base, a slide rail, and a placement rack. The telescopic base is slidably connected to the slide rail, and the placement rack is arranged at the end of the slide rail. The telescopic base includes a support base and a telescopic cylinder;

[0011] The paint spraying and flipping mechanism includes a flipping bracket, a flipping push rod, a flipping connecting rod, a flipping block, and a flipping driving cylinder. The flipping brackets are distributed on both sides of the telescopic base, the flipping driving cylinder is arranged on the flipping brackets, one end of the flipping push rod is connected to the flipping driving cylinder and the other end is rotatably connected to the flipping block, and one end of the flipping connecting rod is rotatably connected to the flipping bracket and the other end is rotatably connected to the flipping block;

[0012] A door panel bracket is arranged on the door panel. The flipping block is provided with a bracket clamping part for accommodating the door panel bracket. The bracket clamping part is in an open shape, and the support base is provided with a support groove for cooperating with the door panel bracket.

[0013] The mobile platform is composed of a support frame, a push plate, a front baffle, and a rear baffle; the support frame is composed of four support rods, and the four support rods are equidistantly distributed so as to be able to support the door panel; the push plate is fixed on the four support frames, connecting the four support frames and playing a role in positioning and pushing the door panel at the same time. The roller conveying mechanism leaves four rack grooves at the rack where the conveying and flipping mechanism is located for placing the four support rods, so that the support frame can be placed under the door panel without affecting the door panel loading and conveying system.

[0014] The push plate is provided to guide the door panel to be transported to a specified position, facilitating the positioning of the push rod conveying mechanism and the subsequent positioning and clamping of the flipping block in the paint spraying and flipping mechanism to the door panel.

[0015] One end of the flipping connecting rod is connected to the flipping bracket, and the other end is connected to the flipping block. One end of the flipping push rod is connected to the flipping driving cylinder and the other end is connected to the flipping block. The flipping push rod is powered by the flipping driving cylinder. Driven by the power mechanism, the flipping push rod pushes the flipping block to move. Since the flipping block is restricted by the flipping connecting rod, the flipping block flips, achieving the purpose of flipping the flipping block. The flipping push rod, the flipping connecting rod, and the flipping block form a linkage mechanism.

[0016] The paint spraying and flipping mechanism adopts the design of linkage movement to convert the simple driven parallel movement into the flipping movement of the flipping block. Before the flipping block flips, the opening faces the push rod conveying mechanism for the push rod conveying mechanism to push the door panel into the opening of the flipping block. After the flipping block flips, the opening faces the door panel blanking mechanism for the door panel blanking mechanism to remove the door panel.

[0017] The power mechanism of the paint spraying and flipping mechanism is driven by a flipping drive cylinder. Using a cylinder drive has the advantages of simple structure, fast response speed, light weight, adjustable pushing force, etc.; the flipping drive cylinder is fixed on the flipping bracket, and one end of the flipping drive cylinder is connected to one end of the flipping push rod. The end of the link mechanism fixed to the flipping drive cylinder needs to move horizontally to ensure that the flipping block can achieve flipping. The motion characteristics of the cylinder are very suitable for the driving power of the paint spraying and flipping mechanism.

[0018] The function of the support groove is to position the door panel placed on the support seat so that the door panel can be placed at the specified position on the support seat.

[0019] The telescopic cylinder enables the support seat to move up and down. When the door panel passes through the paint spraying and flipping mechanism, the opening of the flipping block in the flipping mechanism faces outwards, and at the same time, the support groove on the support seat contacts the door panel bracket on the door panel. The telescopic cylinder provides power to make the support seat move along the opening direction of the flipping block to remove the door panel.

[0020] Preferably, for the above-mentioned door panel front and back flipping and paint spraying system, the feeding mechanism includes a feeding gripper, a feeding moving mechanism, and a feeding bracket. The feeding gripper is provided with a gripper connecting rod, and the gripper connecting rod is slidably connected to the feeding moving mechanism, and the feeding moving mechanism is slidably connected to the feeding bracket.

[0021] Preferably, for the above-mentioned door panel front and back flipping and paint spraying system, the feeding gripper includes a main clamping rod, a secondary clamping rod, a main feeding connecting rod, a secondary feeding connecting rod, a spring, a feeding cylinder, a positioning block, and a gripper bracket. The main clamping rod, the main feeding connecting rod, the secondary clamping rod, and the secondary feeding connecting rod are sequentially hinged at the ends. The main feeding connecting rod is provided with a chute. One end of the positioning block is fixed to the gripper bracket and the other end is slidably connected to the chute. The feeding cylinder is fixed to the gripper bracket, and the feeding cylinder is connected to the main clamping rod. One end of the spring is fixed to the gripper bracket and the other end is connected to the secondary clamping rod.

[0022] The main clamping rod, the secondary clamping rod, the main feeding connecting rod, and the secondary feeding connecting rod form a hinge four-bar mechanism. Driven by the cylinder, the clamping rods contract inward to form a clamping force. When the cylinder is not working, the spring restores the four-bar mechanism to a relaxed state. This four-bar mechanism-shaped mechanical clamping mechanism has the characteristics of simple structure, fast clamping action, and light weight.

[0023] Preferably, for the above-mentioned door panel front and back flipping and paint spraying system, the push plate is provided with a rear baffle at one end close to the door panel feeding conveyor system. When the push plate is retracted on the frame, the rear baffle is located in the conveying direction of the door panel feeding conveyor system.

[0024] Preferably, in the above-mentioned front and back side turning and painting system for door panels, a front baffle is provided at one end of the pushing plate away from the door panel loading and conveying system. The front baffle extends in the opposite direction of the rear baffle. When the moving platform extends out of the frame, the front baffle is located in the conveying direction of the door panel loading and conveying system.

[0025] The front baffle is fixed on one side of the push rod, which can block the door panel behind on the roller conveying mechanism outside the push rod conveying mechanism, ensuring that the relevant actions of the door panel in the push rod conveying mechanism are not interfered by the subsequent door panels when not completed, and improving the continuity and stability of the movement of the front and back side turning and painting system for door panels; the rear baffle is fixed on the other side of the pushing plate, and is used to block the door panel in the push rod conveying mechanism from continuing to move along the conveying direction of the roller conveying mechanism, playing a role in positioning the door panel.

[0026] Preferably, in the above-mentioned front and back side turning and painting system for door panels, the push rod cylinder is a long-stroke cylinder, and the number is two.

[0027] The synchronous operation of the two long-stroke cylinders improves the rigidity of the long-stroke cylinders; the two long-stroke cylinders are fixed under the moving platform by connecting parts. This layout enables the moving platform in the push rod conveying mechanism to have a long stroke while making the overall device more compact.

[0028] Preferably, in the above-mentioned front and back side turning and painting system for door panels, the bracket clamping part of the turning block is wedge-shaped, and the opening gradually narrows from the outside to the inside.

[0029] The opening gradually narrows from the outside to the inside. The large opening at the outer end serves to guide the door panel into the clamping part of the turning block, and the small opening inside is used to clamp the wooden blocks on the door panel brackets at both ends of the door panel, thereby clamping the door panel.

[0030] Preferably, in the above-mentioned front and back side turning and painting system for door panels, side baffles are provided on the outside of the roller conveying mechanism, and the side baffles are fixedly connected to the frame.

[0031] The side baffles are fixed to the frame. The side baffles form a door panel conveying and guiding track, in order to guide the door panel to the designated position, facilitating the positioning of the push rod conveying mechanism and the positioning and clamping of the door panel by the turning block in the subsequent painting and turning mechanism.

[0032] Preferably, in the above-mentioned front and back side turning and painting system for door panels, the placing rack is provided with a layered plate, and layered grooves matching with the door panel brackets are provided on the layered plate.

[0033] The door panel after being removed from the telescopic base and painted is moved along the slide rail to the placement rack; the placement rack is divided into layers from top to bottom. After the telescopic base drags the painted door panel along the slide rail to the placement rack, the painted door panels are placed in sequence from top to bottom and wait to be dried. The layered grooves are used to cooperate with the door panel brackets to fix the door panels.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] 1. The blanking mechanism can automatically remove the door panel after painting from the painting and flipping mechanism and place it on the placement rack, facilitating the subsequent drying, ventilation, and storage of the door panel, realizing high automation and improving production efficiency.

[0036] 2. The painting and flipping mechanism is used to flip the door panel after painting one side for painting the other side. The painting and flipping mechanism uses a cylinder as the driving power, featuring a fast flipping speed and accurate flipping position. At the same time, the painting and flipping mechanism adopts a mechanical motion mode designed with link motion, making the flipping mechanism simpler, more stable, and reliable while ensuring the flipping function.

[0037] 3. The conveying push rod mechanism realizes the process of moving the door panel from the roller conveyor to the painting booth and fixing it to the painting and flipping mechanism to meet the process requirements or facilitate operation and processing, improving production efficiency and flexibility.

[0038] 4. The placement rack in the door panel blanking mechanism is divided into several layers from top to bottom. Due to the special nature of the wooden door panel material, it is necessary to ensure good ventilation of the door panel after painting. The placement rack can ensure the same ventilation conditions for each layer of wooden door panels while ensuring automation, greatly guaranteeing work efficiency and product uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a structural schematic diagram of the present utility model;

[0040] Figure 2 is a structural schematic diagram of the door panel loading and conveying system in the present utility model;

[0041] Figure 3 is a structural schematic diagram of the loading gripper in the present utility model

[0042] Figure 4 is a structural schematic diagram of the roller conveying mechanism in the present utility model;

[0043] Figure 5 is a structural schematic diagram of the push rod conveying mechanism in the present utility model;

[0044] Figure 6 is a structural schematic diagram of the painting and flipping mechanism in the present utility model;

[0045] Figure 7 This is a schematic structural diagram of the door panel blanking mechanism in the present utility model;

[0046] Figure 8 This is a schematic structural diagram of the telescopic base in the present utility model. Specific embodiments

[0047] The following further describes the present utility model in detail in conjunction with the appended Figure 1-8 drawings and specific embodiments, but they do not limit the present utility model: Embodiment

[0048] A door panel front and back flipping and painting system,

[0049] comprising a door panel loading and conveying system, a push rod conveying mechanism 2, a painting and flipping mechanism 3, and a door panel blanking mechanism 4;

[0050] The door panel loading and conveying system includes a loading mechanism and a roller conveying mechanism 7;

[0051] The roller conveying mechanism 7 includes a frame 17, a driving device, a roller assembly, and a transmission assembly 19. The roller assembly is composed of rollers 16. The rollers 16 are rotatably connected to the frame 17. The driving device is connected to one of the rollers 16, and the rollers 16 are connected by means of the transmission assembly 19;

[0052] The push rod conveying mechanism 2 includes a moving platform 20 and a push rod cylinder 23. The moving platform 20 is arranged at the end of the frame 17. The push rod cylinder 23 is arranged on the frame 17 and connected to the moving platform 20. A push plate is arranged on the side of the moving platform 20 away from the door panel blanking mechanism 4;

[0053] The door panel blanking mechanism 4 includes a telescopic base 29, a slide rail 30, and a placement rack 31. The telescopic base 29 is slidably connected to the slide rail 30. The placement rack 31 is arranged at the end of the slide rail 30. The telescopic base 29 includes a support seat 32 and a telescopic cylinder 33;

[0054] The painting and flipping mechanism 3 includes a flipping bracket 25, a flipping push rod 27, a flipping link 28, a flipping block 24, and a flipping driving cylinder 26. The flipping brackets 25 are distributed on both sides of the telescopic base 29. The flipping driving cylinder 26 is arranged on the flipping bracket 25. One end of the flipping push rod 27 is connected to the flipping driving cylinder 26 and the other end is rotatably connected to the flipping block 24. One end of the flipping link 28 is rotatably connected to the flipping bracket 25 and the other end is rotatably connected to the flipping block 24;

[0055] A door panel support is provided on the door panel. The flipping block 24 is provided with a support clamping part for accommodating the door panel support. The support clamping part is in an open shape, and a support groove for cooperating with the door panel support is provided on the support seat 32.

[0056] Preferably, the loading mechanism includes a loading jaw 5, a loading moving mechanism, and a loading support. The loading jaw 5 is provided with a jaw connecting rod, and the jaw connecting rod is slidably connected to the loading moving mechanism. The loading moving mechanism is slidably connected to the loading support.

[0057] Preferably, the loading jaw 5 includes a main clamping rod 9, a sub-clamping rod 10, a main loading connecting rod 12, a sub-loading connecting rod 11, a spring 15, a loading cylinder 8, a positioning block 13, and a jaw support 14. The main clamping rod 9, the main loading connecting rod 12, the sub-clamping rod 10, and the sub-loading connecting rod 11 are sequentially hinged end to end. The main loading connecting rod 12 is provided with a chute. One end of the positioning block 13 is fixed to the jaw support 14 and the other end is slidably connected to the chute. The loading cylinder 8 is fixed to the jaw support 14, and the loading cylinder 8 is connected to the main clamping rod 9. One end of the spring 15 is fixed to the jaw support 14 and the other end is connected to the sub-clamping rod 10.

[0058] Preferably, a rear baffle 22 is provided at one end of the push plate close to the door panel loading conveying system. When the push plate is retracted onto the frame 17, the rear baffle 22 is located in the conveying direction of the door panel loading conveying system.

[0059] Preferably, a front baffle 21 is provided at one end of the push plate away from the door panel loading conveying system. The front baffle 21 extends in the opposite direction of the rear baffle 22. When the moving platform 20 extends out of the frame 17, the front baffle 21 is located in the conveying direction of the door panel loading conveying system.

[0060] Preferably, the push rod cylinder 23 is a long-stroke cylinder and the number is two.

[0061] Preferably, the support clamping part of the flipping block 24 is wedge-shaped, and the opening gradually narrows from the outside to the inside.

[0062] Preferably, side baffles 18 are provided on the outside of the roller conveying mechanism 7, and the side baffles 18 are fixedly connected to the frame 17.

[0063] Preferably, the placement rack 31 is provided with a layered plate, and layered grooves for cooperating with the door panel support are provided on the layered plate.

[0064] When this system is in use, stack the door panels to be painted at the specified position clamped by the loading gripper 5. The loading cylinder 8 on the loading gripper 5 extends to move the main clamping rod 9 forward, cooperating with the main loading connecting rod 12, the auxiliary loading connecting rod 11, and the auxiliary clamping rod 10 to form a four-bar mechanism. Then, combined with the positioning block 13, the auxiliary clamping rod 10 contracts inward. Thus, the main clamping rod 9 and the auxiliary clamping rod 10 form a clamping action to pick up the door panel. After picking up the door panel, the door panel is moved from the picking position to the roller conveying mechanism 7 by the moving mechanism 6. When the loading cylinder 8 contracts, under the elastic force of the spring 15, the main clamping rod 9 and the auxiliary clamping rod 10 are in a relaxed state to put down the door panel. The frame 17 is provided with a row of idler rollers 16, and a transmission component 19 is provided at the end of the idler rollers 16 to make the idler rollers 16 roll to drive the door panel to move forward to complete the automatic loading action of the door panel; the roller conveying mechanism 7 transports the door panel to the push rod conveying mechanism 2. During the transportation of the door panel on the roller conveying mechanism 7, the side baffle 18 provided outside the roller conveying mechanism 7 guides the door panel to the specified position, facilitating the positioning of the door panel by the push rod conveying mechanism 2 and the painting and flipping mechanism 3; after the door panel reaches the specified position on the moving platform 20 in the push rod conveying mechanism 2, the rear baffle 22 on the moving platform 20 stops the door panel from moving forward, and the two push rod cylinders 23 below the moving platform 20 start to drive the moving platform 20 to move. The push plate on the moving platform 20 pushes the door panel into the painting and flipping mechanism 3. At the same time, the front baffle 21 at the front end of the moving platform 20 blocks the door panel behind on the roller conveying mechanism 7 from entering the push rod conveying mechanism 2; the door panel reaches the painting and flipping mechanism 3 through the push rod conveying mechanism 2. Under the action of the push rod conveying mechanism 2, the door panel is pushed into the flipping block 24 in the painting and flipping mechanism 3. The bracket clamping part of the flipping block 24 is wedge-shaped, and the opening gradually decreases from the outside to the inside. The large outer opening serves to guide the door panel into the bracket clamping part of the flipping block 24, and the small inner opening of the bracket clamping part is used to clamp the wooden blocks on the steel bars at both ends of the door panel to clamp the door panel;After the door panel is clamped, painting starts on one side of the door panel. After the painting of this side is completed, the push rod cylinder 23 in the push rod conveying mechanism 2 retracts, driving the moving platform 20 to move backward to restore the working state of the push rod conveying mechanism 2. After the push rod conveying mechanism 2 is reset, the driving flipping driving cylinder 26 fixed to the flipping bracket 25 in the painting flipping mechanism 3 pushes forward. The driving flipping driving cylinder 26 is connected to the flipping push rod 27, the flipping push rod 27 is connected to the flipping block 24, and the flipping link 28 is simultaneously connected to the flipping bracket 25 and the flipping block 24 to form a link mechanism. The driving flipping driving cylinder 26 drives the flipping push rod 27 to move forward. Under the action of the link mechanism, the flipping block 24 drives the door panel to flip 180° so that the unpainted side of the door panel faces upward. At the same time, the direction of the bracket clamping part of the flipping block 24 turns towards the door panel blanking mechanism 4. The door panel brackets on both sides of the door panel fall into the two support grooves on the support seats 32 on the telescopic base 29 in the door panel blanking mechanism 4, playing a role in assisting in supporting the door panel. After the door panel flips, painting starts on the other side. After the painting is completed, the telescopic base 29 in the door panel blanking mechanism 4 moves along the slide rail 30 towards the placement rack 31. Under the push of the side walls of the two support grooves on the support seats 32, the door panel moves to the placement rack 31 together with the telescopic base 29. The telescopic cylinder 33 is driven to move up and down to place the door panel in the placement rack 31 to complete the blanking action of the door panel after painting.;

[0065] In summary, the above are only the preferred embodiments of the present invention. All equivalent changes and modifications made within the scope of the patent application of the present invention shall fall within the scope covered by the present invention.

Claims

1. A door panel front and back flip painting system, characterized by: It comprises a door panel feeding and conveying system, a push rod feeding mechanism (2), a paint spraying and turning mechanism (3), and a door panel unloading mechanism (4); The door panel feeding and conveying system comprises a feeding mechanism and a roller conveying mechanism (7); The roller conveying mechanism (7) comprises a frame (17), a driving device, a roller assembly, and a transmission assembly (19); the roller assembly comprises rollers (16); the rollers (16) are rotatably connected to the frame (17); the driving device is connected to one of the rollers (16); and the rollers (16) are connected to each other via the transmission assembly (19); The push rod conveying mechanism (2) comprises a moving platform (20) and a push rod cylinder (23); the moving platform (20) is arranged at the rear end of the frame (17); the push rod cylinder (23) is arranged on the frame (17) and connected to the moving platform (20); a push plate is arranged on the side of the moving platform (20) away from the door panel unloading mechanism (4); The door panel unloading mechanism (4) comprises a telescopic base (29), a slide rail (30), and a display rack (31); the telescopic base (29) is slidably connected to the slide rail (30); the display rack (31) is arranged at the end of the slide rail (30); the telescopic base (29) comprises a support seat (32) and a telescopic cylinder (33); The paint spraying turning mechanism (3) comprises a turning bracket (25), a turning push rod (27), a turning connecting rod (28), a turning block (24), and a turning driving cylinder (26); the turning bracket (25) is distributed on both sides of the telescopic base (29); the turning driving cylinder (26) is arranged on the turning bracket (25); one end of the turning push rod (27) is connected to the turning driving cylinder (26) and the other end is rotatably connected to the turning block (24); one end of the turning connecting rod (28) is rotatably connected to the turning bracket (25) and the other end is rotatably connected to the turning block (24); A door panel bracket is provided on the door panel, the flip block (24) is provided with a bracket clamping portion for accommodating the door panel bracket, the bracket clamping portion is in an open shape, and the support seat (32) is provided with a support groove for matching the door panel bracket.

2. A door panel front and back flip painting system according to claim 1, characterized in that: The feeding mechanism comprises a feeding clamp (5), a feeding moving mechanism, and a feeding bracket. The feeding clamp (5) is provided with a clamp connecting rod, the clamp connecting rod is slidably connected to the feeding moving mechanism, and the feeding moving mechanism is slidably connected to the feeding bracket.

3. A door panel front and back flip painting system according to claim 2, characterized in that: The feeding clamp (5) comprises a main clamping rod (9), a secondary clamping rod (10), a main feeding connecting rod (12), a secondary feeding connecting rod (11), a spring (15), a feeding cylinder (8), a positioning block (13), and a clamping jaw bracket (14). The main clamping rod (9), the main feeding connecting rod (12), the secondary clamping rod (10), and the secondary feeding connecting rod (11) are hinged in sequence end to end. The main feeding connecting rod (12) is provided with a slide groove. One end of the positioning block (13) is fixed to the clamping jaw bracket (14) and the other end is slidably connected to the slide groove. The feeding cylinder (8) is fixed to the clamping jaw bracket (14). The feeding cylinder (8) is connected to the main clamping rod (9). One end of the spring (15) is fixed to the clamping jaw bracket (14) and the other end is connected to the secondary clamping rod (10).

4. The door panel front and back flip painting system according to claim 1, characterized in that: The push plate is provided with a rear baffle (22) at one end close to the door panel feeding conveying system. When the push plate is folded onto the frame (17), the rear baffle (22) is located in the conveying direction of the door panel feeding conveying system.

5. The door panel front and back flip painting system according to claim 4, characterized in that: The push plate is provided with a front baffle (21) at one end away from the door panel feeding conveying system, and the front baffle (21) extends in the opposite direction of the rear baffle (22). When the mobile platform (20) extends out of the frame (17), the front baffle (21) is located in the conveying direction of the door panel feeding conveying system.

6. The door panel front and back flip painting system according to claim 1, characterized in that: The push rod cylinders (23) are long-stroke cylinders, and there are two of them.

7. The door panel front and back flip painting system according to claim 1, characterized in that: The bracket clamping portion of the flip block (24) is wedge-shaped, and the opening gradually decreases from the outside to the inside.

8. The door panel front and back flip painting system according to claim 7, characterized in that: The roller conveying mechanism (7) is provided with a side baffle (18) on the outside, and the side baffle (18) is fixedly connected to the frame (17).

9. The door panel front and back flip painting system according to claim 1, characterized in that: The display rack (31) is provided with a layered plate, and the layered plate is provided with a layered groove that cooperates with the door panel bracket.

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