Agricultural machinery component powder coating production line

Abstract

The present application relates to the technical field of coating, in particular to a kind of agricultural machinery component powder coating production line, including pretreatment main body, fixed mounting frame, mobile adjustment main body, spraying main body and collection protection main body, the pretreatment main body and spraying main body are respectively arranged in the two ends outside of mobile adjustment main body, the pretreatment main body and spraying main body structure are same, the fixed mounting frame is symmetrically distributed and arranged in the two sides of mobile adjustment main body, and the fixed mounting frame is located between pretreatment main body and spraying main body, the collection protection main body is arranged between the bottom of pretreatment main body and spraying main body.The workpiece can be automatically and accurately transferred between pretreatment main body and spraying main body by the cooperation of track plate, driving gear and mobile tooth plate in mobile adjustment main body, realizes the flow line operation of feeding pretreatment spraying solidification and discharging, reduces manual operation and intervention.

Description

Technical Field

[0001] This invention relates to the field of coating technology, specifically to a powder coating production line for agricultural machinery parts. Background Technology

[0002] Agricultural machinery operates in harsh environments, constantly exposed to farmland soil, fertilizers, pesticides, and humid climates, resulting in severe corrosion. Corrosion not only shortens the service life of agricultural machinery and reduces economic benefits but also hinders the development of agricultural mechanization. Therefore, effective anti-corrosion coating protection for agricultural machinery components is of great significance.

[0003] Powder coating technology is increasingly widely used in the field of agricultural machinery corrosion protection due to its advantages such as solvent-free emissions, high coating utilization rate, and excellent coating performance. However, existing powder coating equipment is difficult to flexibly limit and spray large thin-walled parts of different specifications during operation. Most existing powder coating equipment adopts a single-line unidirectional conveying method. For complex thin-walled parts that require double-sided spraying, manual flipping or secondary loading is often required to complete the spraying of both ends of the workpiece. This results in low production efficiency. During the powder spraying process, powder splashes in all directions, which not only pollutes the air but also results in low powder recycling rate, causing paint waste and environmental pollution. Furthermore, the workpiece cannot be adequately pre-treated before spraying, leading to low curing efficiency after spraying. Therefore, a powder coating production line for agricultural machinery parts is needed to solve the above problems. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a powder coating production line for agricultural machinery parts.

[0005] The technical solution adopted by this invention to solve its technical problem is: an agricultural machinery component powder coating production line, comprising a pretreatment main body, a fixed mounting frame, a movable adjustment main body, a spraying main body, and a collection and protection main body. The pretreatment main body and the spraying main body are respectively arranged on the outer sides of both ends of the movable adjustment main body. The pretreatment main body and the spraying main body have the same structure. The fixed mounting frame is symmetrically distributed on both sides of the movable adjustment main body and is located between the pretreatment main body and the spraying main body. The collection and protection main body is arranged between the bottom of the pretreatment main body and the spraying main body. The movable adjustment main body includes a track plate, a detection plate, a movable toothed plate, a first motor, a synchronizing rod, a limiting frame, a drive gear, and a side mounting plate. The upper end of the limiting adjustment part is slidably engaged with the track plate. The movable toothed plates are distributed on both sides of the track plate, and the movable toothed plates are respectively fixedly connected to the outer side of the upper end of the limiting adjustment part. The limiting frame is fixedly installed in the middle of the outer end of the track plate. The synchronizing rod is rotatably engaged with the limiting frame. The side mounting plate is fixedly installed on both sides of the outer end of the track plate. The outer end of the drive gear is rotatably engaged with the middle of the side mounting plate. The first motor is fixedly installed in the middle of the outer end of the side mounting plate, and the driving end of the first motor passes through the side mounting plate and is fixedly connected to the middle of the outer end of a drive gear. The bottom end of the drive gear is meshed with the movable toothed plate.

[0006] Preferably, the limiting adjustment part includes a first electric push rod, a second motor, a sliding frame, a mounting limiting frame, a second electric push rod, a first supporting rotating frame, a connecting plate, a limiting plate, a side limiting plate, and a second supporting rotating frame. The mounting limiting frame is fixedly connected to the bottom end of the sliding frame. The second motor is fixedly installed inside the mounting limiting frame. The upper middle part of the first supporting rotating frame is rotatably engaged with the bottom end of the mounting limiting frame, and the drive end of the second motor passes through the mounting limiting frame and is fixedly connected to the upper middle part of the first supporting rotating frame. The second supporting rotating frame is arranged in the... Directly below the first supporting rotating frame, the connecting plate is fixedly connected between the side ends of the first and second supporting rotating frames. The two ends of the side limiting plate are respectively slidably engaged inside the side ends of the first and second supporting rotating frames. The second electric push rod is fixedly installed at the outer end of the first and second supporting rotating frames, and the front end of the second electric push rod is connected to the inner side of the outer end of the side limiting plate. The first electric push rod is fixedly installed in the middle of the first and second supporting rotating frames, and the limiting plate is fixedly connected to the end of the first electric push rod.

[0007] Preferably, a tension sensor is provided between the second electric push rod and the side limiting plate, a second pressure sensor is provided between the end of the first electric push rod and the limiting plate, a detection plate is fixedly installed at the upper middle part of the sliding frame, a laser ranging sensor is fixedly installed at the inner middle part of the limiting frame, and the detection plate is located directly in front of the laser ranging sensor.

[0008] Preferably, both the pretreatment body and the spraying body include a first nozzle, a second nozzle, a first L-shaped support frame, a fixed connecting plate, a third electric push rod, a second L-shaped support frame, an electric control valve, a first connecting conveying pipe, a second connecting conveying pipe, a fourth electric push rod, a stabilizing clamping plate, a protective baffle frame, and a support connecting frame. The first L-shaped support frame and the second L-shaped support frame are arranged in a mirror-symmetrical manner. The fixed connecting plate is fixedly connected between the upper ends of the first L-shaped support frame and the second L-shaped support frame. The support connecting frames are respectively disposed above the second L-shaped support frame and the first L-shaped support frame. The third electric push rod is fixedly installed on the support connecting frame, and the bottom end of the third electric push rod is fixed to the middle of the upper end of the second L-shaped support frame and the first L-shaped support frame, respectively. The protective partition frames are respectively installed on the inner sides of the second L-shaped support frame and the first L-shaped support frame. The stabilizing plates are evenly fixedly connected to both sides of the protective partition frames, and the stabilizing plates are evenly inserted and snapped onto the second L-shaped support frame and the first L-shaped support frame. The fourth electric push rod is fixedly installed at the middle of the outer end of the second L-shaped support frame and the first L-shaped support frame. The front end of the fourth electric push rod is fixedly connected to the middle of the outer end of the protective partition frame. The first connecting conveying pipe and the second connecting conveying pipe are fixedly installed at both ends of the outer side of the protective partition frame. The electric control valve is installed on the first connecting conveying pipe and the second connecting conveying pipe. The first nozzle and the second nozzle are evenly staggered at the inner end of the protective partition frame.

[0009] Preferably, the collection and protection body includes a recovery hole, a protective baffle, a limiting support frame, a baffle guide frame, a U-shaped fixing frame, an adjusting plate, a fifth electric push rod, and a discharge connecting pipe. The baffle guide frame is disposed on the upper inner side of the limiting support frame. The protective baffle is slidably engaged with the limiting support frame. The U-shaped fixing frame is evenly and fixedly installed at the bottom of the limiting support frame, and the protective baffle is located inside the U-shaped fixing frame. The recovery hole is opened through the limiting support frame. The fifth electric push rod is fixedly installed at the bottom of the limiting support frame. The U-shaped fixing frame is fixedly connected to the middle of the bottom end of the protective baffle. The bottom end of the fifth electric push rod is fixedly connected to the middle of the upper end of the adjusting plate. The discharge connecting pipe is symmetrically arranged at the bottom of the limiting support frame, and the recovery hole communicates with the discharge connecting pipe.

[0010] Preferably, the first L-shaped support frame and the second L-shaped support frame in the pretreatment body and the spraying body are both fixedly connected to the limiting support frame, the partition guide frame is located at the bottom of the pretreatment body, and the protective partition cover is located at the bottom of the spraying body.

[0011] Preferably, the first L-shaped support frame and the second L-shaped support frame are fixedly connected to the side end of the track plate, the sliding frame is slidably engaged on the track plate, and the movable toothed plate is fixedly connected to the side end of the sliding frame.

[0012] Preferably, the fixed mounting bracket has evenly spaced fixing holes, and the bottom of the fixed mounting bracket is fixedly connected to the outer end of the track plate and the first L-shaped support bracket and the second L-shaped support bracket in the pretreatment body and the spraying body, and the support connecting bracket is fixedly connected to the bottom of the fixed mounting bracket.

[0013] The beneficial effects of this invention are:

[0014] I. This invention enables automatic and precise transfer of workpieces between the pretreatment body and the spraying body through the cooperation of the track plate, drive gear, and moving toothed plate in the movable adjustment body. This realizes the assembly line operation of loading, pretreatment, spraying, curing, and unloading, reducing manual operation and intervention. By using the cooperation of laser range sensor and detection plate, the position of the limit adjustment part and the workpiece it loads can be determined in real time and accurately, ensuring that the workpiece can be accurately stopped at the pretreatment or spraying station. In the limit adjustment part, the limit plate driven by the first electric push rod and the side limit plate driven by the second electric push rod can be adjusted laterally and longitudinally according to the size of the workpiece, realizing the stable and adaptable clamping of large thin-walled parts of different sizes and shapes.

[0015] II. This invention uses a second electric motor to drive the first and second support rotating frames to rotate, which can continuously rotate the clamped workpiece during pretreatment and spraying, ensuring that all processes such as cleaning, drying, spraying, and curing can cover every surface of the workpiece, achieving treatment without dead angles. The height of the first and second nozzles and the distance between them and the workpiece can be adjusted by the third and fourth electric push rods, respectively, so that the nozzles are in the optimal working position, optimizing the spraying and treatment effect. The protective baffle at the bottom of the spraying body can be raised during spraying, forming a relatively closed space around the workpiece together with the protective baffle frame, effectively confining the flying powder coating inside, greatly improving the working environment, preventing air pollution, and facilitating material recovery. This device can complete all processes such as cleaning, drying, spraying, and high-temperature curing of the workpiece on a single line, improving spraying efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional structural diagram of the main body in this invention;

[0018] Figure 2 This is a schematic diagram of the protective barrier in the raised state of the present invention;

[0019] Figure 3 This is a schematic diagram of the upper part of the main body structure in this invention;

[0020] Figure 4 This is a schematic diagram of the movable adjustment main structure in this invention;

[0021] Figure 5 This is a schematic diagram of the limit adjustment part in the present invention;

[0022] Figure 6 This is a schematic diagram of the preprocessing main structure in this invention;

[0023] Figure 7 This is a schematic diagram of the main structure for collecting and protecting the object in this invention;

[0024] Figure 8 This is a schematic diagram of the bottom structure of the collection and protection body in this invention.

[0025] In the diagram: 1-Pre-treatment main body, 2-Fixed mounting bracket, 3-Moving adjustment main body, 4-Spraying main body, 5-Collection and protection main body, 6-Track plate, 7-Detection plate, 9-Moving toothed plate, 10-Laser rangefinder sensor, 11-First motor, 12-Synchronizing rod, 13-Limiting frame, 14-Drive gear, 15-Side mounting plate, 16-Limiting adjustment part, 17-First electric push rod, 18-Second motor, 19-Sliding frame, 20-Mounting limit frame, 21-Tension sensor, 22-Second electric push rod, 23-First support rotating frame, 24-Connecting plate, 25-Second pressure sensor, 26-Limiting 27-Side limiting plate, 28-Second support rotating frame, 29-First nozzle, 30-Second nozzle, 31-First L-shaped support frame, 32-Fixed connecting plate, 33-Third electric push rod, 34-Second L-shaped support frame, 35-Electric control valve, 36-First connecting conveying pipe, 37-Second connecting conveying pipe, 38-Fourth electric push rod, 39-Stabilizing plate, 40-Protective baffle frame, 41-Recovery hole, 42-Protective baffle cover, 43-Limiting support frame, 44-Baffle guide frame, 45-U-shaped fixed frame, 46-Adjusting plate, 47-Fifth electric push rod, 48-Discharge connecting pipe, 49-Support connecting frame. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] The invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1-4 As shown, an agricultural machinery component powder coating production line of the present invention includes a pretreatment main body 1, a fixed mounting frame 2, a movable adjustment main body 3, a spraying main body 4, and a collection and protection main body 5. The pretreatment main body 1 and the spraying main body 4 are respectively arranged on the outer sides of both ends of the movable adjustment main body 3. The pretreatment main body 1 and the spraying main body 4 have the same structure. The fixed mounting frame 2 is symmetrically distributed on both sides of the movable adjustment main body 3, and the fixed mounting frame 2 is located between the pretreatment main body 1 and the spraying main body 4. The collection and protection main body 5 is arranged between the bottom of the pretreatment main body 1 and the spraying main body 4. The movable adjustment main body 3 includes a track plate 6, a detection plate 7, a movable toothed plate 9, a first motor 11, a synchronizing rod 12, a limiting frame 13, a drive gear 14, and a side mounting plate 15. The upper end of the limiting adjustment part 16 is slidably engaged with the track plate 6. The movable toothed plates 9 are distributed on both sides of the track plate 6, and the movable toothed plates 9 are respectively fixedly connected to the outer side of the upper end of the limiting adjustment part 16. The limiting frame 13 is fixedly mounted on the track plate 6. At the middle of the outer end of the track plate 6, the synchronizing rod 12 is rotatably engaged with the limiting frame 13. The side mounting plate 15 is fixedly installed on both sides of the outer end of the track plate 6. The outer end of the drive gear 14 is rotatably engaged with the middle of the side mounting plate 15. The first motor 11 is fixedly installed at the middle of the outer end of the side mounting plate 15, and the drive end of the first motor 11 passes through the side mounting plate 15 and is fixedly connected to the middle of the outer end of a drive gear 14. The bottom end of the drive gear 14 is meshed with the moving toothed plate 9. The first motor 11 can make the two drive gears 14 rotate synchronously. Through the drive gear 14 and the moving toothed plate 9, the limiting adjustment part 16 and the workpiece inside can slide along the track plate 6 into the interior of the pretreatment body 1 and the spraying body 4. Pretreatment is performed first, followed by spraying and curing. The position of the detection plate 7 is detected by the laser range sensor 10, which can determine the position of the limiting adjustment part 16, ensuring the precise operation of the pretreatment body 1 and the spraying body 4.

[0029] like Figure 5As shown, the limit adjustment unit 16 includes a first electric push rod 17, a second motor 18, a sliding frame 19, a mounting limit frame 20, a second electric push rod 22, a first support rotating frame 23, a connecting plate 24, a limit plate 26, a side limit plate 27, and a second support rotating frame 28. The mounting limit frame 20 is fixedly connected to the bottom end of the sliding frame 19. The second motor 18 is fixedly installed inside the mounting limit frame 20. The upper middle part of the first support rotating frame 23 is rotatably engaged with the bottom end of the mounting limit frame 20, and the drive end of the second motor 18 passes through the mounting limit frame 20 and the upper middle part of the first support rotating frame 23. The first support rotating frame 23 is fixedly connected to the second support rotating frame 28, which is located directly below the first support rotating frame 23. A connecting plate 24 is fixedly connected between the side ends of the first support rotating frame 23 and the second support rotating frame 28. The two ends of a side limiting plate 27 are slidably engaged inside the side ends of the first support rotating frame 23 and the second support rotating frame 28, respectively. A second electric push rod 22 is fixedly installed at the outer ends of the first support rotating frame 23 and the second support rotating frame 28, with its front end connected to the inner side of the outer end of the side limiting plate 27. A first electric push rod 17 is fixedly installed on the first support rotating frame 23 and the second support rotating frame 28, respectively. In the middle of the rotating frame 28, a limiting plate 26 is fixedly connected to the end of the first electric push rod 17. A tension sensor 21 is provided between the second electric push rod 22 and the side limiting plate 27. A second pressure sensor 25 is provided between the end of the first electric push rod 17 and the limiting plate 26. A detection plate 7 is fixedly installed in the middle of the upper end of the sliding frame 19. A laser rangefinder sensor 10 is fixedly installed in the middle of the inner end of the limiting frame 13, and the detection plate 7 is located directly in front of the laser rangefinder sensor 10. The distance between the two limiting plates 26 can be controlled by the mirror-symmetrically distributed first electric push rods 17, which can clamp workpieces of different sizes. The device is fixed in place, and the side limiting plates 27 on both sides of the limiting plate 26 can be moved to the sides of the workpiece by the tension sensor 21 to achieve auxiliary clamping and limiting, thereby limiting the workpiece at multiple points and around the perimeter to prevent displacement and falling during pretreatment and spraying. The first support rotating frame 23 and the second support rotating frame 28 can be rotated by the second motor 18, thereby rotating the workpiece fixed between the middle of the limiting plate 26. During cleaning and spraying, the outer wall can be cleaned and sprayed without dead angles. The sensor can control the extrusion pressure, so that the limiting is firm and the workpiece is not squeezed and damaged.

[0030] like Figure 6As shown, both the pretreatment body 1 and the spraying body 4 include a first nozzle 29, a second nozzle 30, a first L-shaped support frame 31, a fixed connecting plate 32, a third electric push rod 33, a second L-shaped support frame 34, an electric control valve 35, a first connecting conveying pipe 36, a second connecting conveying pipe 37, a fourth electric push rod 38, a stabilizing clamping plate 39, a protective partition frame 40, and a support connecting frame 49. The first L-shaped support frame 31 and the second L-shaped support frame 34 are arranged in a mirror-symmetrical manner. The fixed connecting plate 32 is fixedly connected between the upper ends of the first L-shaped support frame 31 and the second L-shaped support frame 34. The support connecting frame 49 is respectively arranged above the second L-shaped support frame 34 and the first L-shaped support frame 31. Three electric push rods 33 are fixedly installed on the support connecting frame 49, and the bottom end of the third electric push rod 33 is fixedly connected to the upper middle part of the second L-shaped support frame 34 and the first L-shaped support frame 31 respectively. The protective partition frame 40 is respectively set on the inner side of the second L-shaped support frame 34 and the first L-shaped support frame 31. The stabilizing plate 39 is evenly fixedly connected to both sides of the protective partition frame 40, and the stabilizing plate 39 is evenly inserted and clamped into the second L-shaped support frame 34 and the first L-shaped support frame 31. The fourth electric push rod 38 is fixedly installed on the middle part of the outer end of the second L-shaped support frame 34 and the first L-shaped support frame 31 respectively, and the front end of the fourth electric push rod 38 is fixedly connected to the middle part of the outer end of the protective partition frame 40. The first connecting conveyor pipe 36 and the second connecting conveyor pipe 37 are fixedly installed at both ends of the outer side of the protective partition frame 40. The electric control valve 35 is installed on the first connecting conveyor pipe 36 and the second connecting conveyor pipe 37. The first nozzle 29 and the second nozzle 30 are evenly and alternately arranged on the inner side of the protective partition frame 40. The pretreatment unit 1 is set to assist in the pretreatment of the workpiece by rinsing and drying. The spraying body 4 is responsible for spraying and high-temperature curing of the workpiece. The first connecting conveyor pipe 36 and the second connecting conveyor pipe 37 in the pretreatment body 1 are connected to the cleaning fluid supply equipment and the drying equipment respectively through hoses, so that the first nozzle 29 and the second nozzle 30 can spray cleaning fluid to clean and dry the workpiece respectively. The first connecting conveying pipe 36 and the second connecting conveying pipe 37 in the spraying body 4 are connected to the paint supply equipment and the high-temperature drying equipment respectively through hoses, so that the first nozzle 29 and the second nozzle 30 spray paint and high-temperature airflow respectively. The protective baffle frame 40 can be slidably adjusted by the fourth electric push rod 38, thereby controlling the distance between the first nozzle 29 and the second nozzle 30 and the workpiece. Baffles are set on both sides of the protective baffle frame 40 to prevent splashing. The first L-shaped support frame 31 and the second L-shaped support frame 34, as well as the protective baffle frame 40 and the first nozzle 29 and the second nozzle 30 can be raised and lowered by the third electric push rod 33, so that different positions of the workpiece can be treated and sprayed.

[0031] like Figure 7-8As shown, the collection and protection body 5 includes a recovery hole 41, a protective baffle 42, a limiting support frame 43, a baffle guide frame 44, a U-shaped fixing frame 45, an adjusting plate 46, a fifth electric push rod 47, and a discharge connecting pipe 48. The baffle guide frame 44 is located on the upper inner side of the limiting support frame 43. The protective baffle 42 is slidably engaged with the limiting support frame 43. The U-shaped fixing frame 45 is evenly and fixedly installed at the bottom of the limiting support frame 43, and the protective baffle 42 is located inside the U-shaped fixing frame 45. The recovery hole 41 is opened through the limiting support frame 43. The fifth electric push rod 47 is fixedly installed on the limiting support frame 43. At the bottom of the support frame 43, the U-shaped fixing bracket 45 is fixedly connected to the middle of the bottom of the protective partition cover 42. The bottom of the fifth electric push rod 47 is fixedly connected to the middle of the upper end of the adjusting plate 46. The discharge connection pipe 48 is symmetrically arranged at the bottom of the limiting support frame 43, and the recovery hole 41 is connected to the discharge connection pipe 48. The cleaning liquid can be collected and guided through the partition guide frame 44. The paint can be collected through the lifting limit support frame 43. The collected paint can be recycled and reused through the recovery hole 41 and the discharge connection pipe 48 in the middle of the protective partition cover 42.

[0032] The first L-shaped support frame 31 and the second L-shaped support frame 34 in the pretreatment body 1 and the spraying body 4 are both fixedly connected to the limiting support frame 43. The baffle guide frame 44 is located at the bottom of the pretreatment body 1, and the protective baffle cover 42 is located at the bottom of the spraying body 4. When the protective baffle cover 42 is raised, it can cover the limiting adjustment part 16 and the workpiece inside and the bottom of the spraying body 4 inside the baffle, so that the sprayed paint will not splash and spread, and it is convenient to recycle.

[0033] The first L-shaped support frame 31 and the second L-shaped support frame 34 are fixedly connected to the side end of the track plate 6, respectively. The sliding frame 19 is slidably engaged on the track plate 6. The moving toothed plate 9 is fixedly connected to the side end of the sliding frame 19. By moving the toothed plate 9, the limit adjustment part 16 can be slid laterally along the track plate 6 to adjust its position.

[0034] The fixed mounting bracket 2 has evenly spaced fixing holes for easy installation. The bottom of the fixed mounting bracket 2 is fixedly connected to the outer end of the track plate 6 and the first L-shaped support bracket 31 and the second L-shaped support bracket 34 in the pretreatment body 1 and the spraying body 4. The support connecting bracket 49 is fixedly connected to the bottom of the fixed mounting bracket 2.

[0035] Working principle: This device is fixedly mounted using the fixed mounting bracket 2 and connected to an external PLC controller. First, the operator places the agricultural machinery parts to be processed into the limit adjustment part 16. By controlling the extension and retraction of the first electric push rod 17, the limit plate 26 is pushed towards the center, thereby initially clamping and fixing the workpiece according to different specifications. At the same time, the second electric push rod 22 drives the side limit plate 27 to move to the side of the workpiece, realizing multi-point auxiliary limit around the workpiece. The tension sensor 21 and the second pressure sensor 25 monitor the clamping force in real time to ensure that the clamping is firm and will not damage the surface of the workpiece. Then, the first motor 11 starts, and through the meshing transmission of the drive gear 14 and the moving toothed plate 9, it drives the sliding frame 19 and the entire limit adjustment part to move horizontally along the track plate 6, sending the workpiece into the working area of ​​the pre-processing body 1.

[0036] After the workpiece enters the pretreatment body 1, the laser rangefinder 10 detects the position signal of the detection plate 7, confirming that the workpiece is in place. At this time, the third electric push rod 33 is activated, adjusting the first nozzle 29 and the second nozzle 30 to the optimal working height. The fourth electric push rod 38 pushes the protective partition frame 40 close to the workpiece to reduce the splashing of cleaning fluid. The first connecting conveying pipe 36 and the second connecting conveying pipe 37, which are connected to the cleaning fluid supply equipment and the drying equipment, are controlled by the electric control valve 35 to spray cleaning fluid from the first nozzle 29 to rinse the surface of the workpiece and remove oil and impurities. After rinsing, the system switches to the second nozzle 30, which is connected to the drying equipment, to spray high-temperature airflow to dry the workpiece. During the pretreatment process, the second motor 18 drives the first support rotating frame 23 and the second support rotating frame 28 to rotate, causing the workpiece to flip, achieving all-round cleaning and drying of the outer wall of the workpiece without dead angles. After the pretreatment is completed, the first motor 11 is restarted, moving the limit adjustment part 16 and the workpiece along the track plate 6 to the spraying body 4. Within the working area, the structure of the spraying body 4 is the same as that of the pretreatment body 1, but its first conveying pipe 36 and second conveying pipe 37 are respectively connected to the powder coating supply equipment and the high-temperature curing equipment. After the workpiece is in place, the fourth electric push rod 38 pushes the protective partition frame 40 closer to the workpiece. At the same time, the protective partition cover 42 in the bottom collection and protection body 5 is raised under the drive of the fifth electric push rod 47, surrounding the workpiece and the lower part of the spraying body 4 to form a relatively closed spraying space to prevent powder splashing. At this time, the first nozzle 29 sprays out powder coating to electrostatically spray the workpiece surface. At the same time, the second motor 18 drives the workpiece to rotate continuously to ensure that the coating evenly covers all surfaces. During the spraying process, the protective partition frame 40 and the protective partition cover 42 effectively collect the unadsorbed powder coating. The excess powder coating that is not adsorbed on the workpiece settles under the action of gravity, and part of it passes through the recovery hole 41. The powder enters the discharge connection pipe 48 and connects to the external negative pressure adsorption equipment to recycle the powder into the powder storage box, thereby improving the utilization rate of the coating. After the spraying is completed, the second nozzle 30 is switched to spray a high-temperature airflow to heat, melt, level, and solidify the powder coating on the surface of the workpiece. During this period, the workpiece is kept rotating to ensure uniform heating, so that the coating can quickly form a dense and smooth protective film. After the curing is completed, the fifth electric push rod 47 lowers the protective partition cover 42, the fourth electric push rod 38 retracts the protective partition frame 40, the first motor 11 drives the limit adjustment part 16 and the workpiece to move out of the spraying body 4 to the unloading position along the track plate 6, the first electric push rod 17 and the second electric push rod 22 retract, releasing the clamping force, and the operator can then remove the processed agricultural machinery parts.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder coating production line for agricultural machinery parts, comprising a pretreatment main body (1), a fixed mounting frame (2), a movable adjustment main body (3), a spraying main body (4), and a collection and protection main body (5), characterized in that: The pretreatment body (1) and the spraying body (4) are respectively arranged on the outer sides of both ends of the movable adjustment body (3). The pretreatment body (1) and the spraying body (4) have the same structure. The fixed mounting bracket (2) is symmetrically distributed on both sides of the movable adjustment body (3), and the fixed mounting bracket (2) is located between the pretreatment body (1) and the spraying body (4). The collection and protection body (5) is arranged between the bottom of the pretreatment body (1) and the spraying body (4). The movable adjustment body (3) includes a track plate (6), a detection plate (7), a moving toothed plate (9), a first motor (11), a synchronous rod (12), a limiting frame (13), a drive gear (14), a side mounting plate (15), and a limiting adjustment part (16). The upper end of the limiting adjustment part (16) is slidably engaged with the track plate (6). The movable toothed plates (9) are distributed on both sides of the track plate (6), and the movable toothed plates (9) are respectively fixedly connected to the upper outer side of the limit adjustment part (16). The limit frame (13) is fixedly installed in the middle of the outer side of the track plate (6). The synchronizing rod (12) is rotatably engaged with the limit frame (13). The side mounting plate (15) is fixedly installed on both sides of the outer side of the track plate (6). The outer end of the drive gear (14) is rotatably engaged with the middle of the side mounting plate (15). The first motor (11) is fixedly installed in the middle of the outer side of the side mounting plate (15), and the driving end of the first motor (11) passes through the side mounting plate (15) and is fixedly connected to the middle of the outer side of a drive gear (14). The bottom end of the drive gear (14) is meshed with the movable toothed plates (9).

2. The powder coating production line for agricultural machinery parts according to claim 1, characterized in that: The limiting adjustment part (16) includes a first electric push rod (17), a second motor (18), a sliding frame (19), a mounting limiting frame (20), a second electric push rod (22), a first support rotating frame (23), a connecting plate (24), a limiting plate (26), a side limiting plate (27), and a second support rotating frame (28). The mounting limiting frame (20) is fixedly connected to the bottom end of the sliding frame (19). The second motor (18) is fixedly installed inside the mounting limiting frame (20). The upper middle part of the first support rotating frame (23) is rotatably engaged with the bottom end of the mounting limiting frame (20), and the driving end of the second motor (18) passes through the mounting limiting frame (20) and is fixedly connected to the upper middle part of the first support rotating frame (23). 8) The connecting plate (24) is fixedly connected between the side ends of the first support rotating frame (23) and the second support rotating frame (28) and the two ends of the side limiting plate (27) are respectively slidably engaged inside the side ends of the first support rotating frame (23) and the second support rotating frame (28). The second electric push rod (22) is fixedly installed at the outer end of the first support rotating frame (23) and the second support rotating frame (28), and the front end of the second electric push rod (22) is connected to the inner side of the outer end of the side limiting plate (27). The first electric push rod (17) is fixedly installed in the middle of the first support rotating frame (23) and the second support rotating frame (28), and the limiting plate (26) is fixedly connected to the end of the first electric push rod (17).

3. The powder coating production line for agricultural machinery parts according to claim 2, characterized in that: A tension sensor (21) is provided between the second electric push rod (22) and the side limiting plate (27). A second pressure sensor (25) is provided between the end of the first electric push rod (17) and the limiting plate (26). A detection plate (7) is fixedly installed at the middle of the upper end of the sliding frame (19). A laser rangefinder (10) is fixedly installed at the middle of the inner end of the limiting frame (13), and the detection plate (7) is located directly in front of the laser rangefinder (10).

4. The powder coating production line for agricultural machinery parts according to claim 3, characterized in that: Both the pretreatment body (1) and the spraying body (4) include a first nozzle (29), a second nozzle (30), a first L-shaped support frame (31), a fixed connecting plate (32), a third electric push rod (33), a second L-shaped support frame (34), an electric control valve (35), a first connecting conveying pipe (36), a second connecting conveying pipe (37), a fourth electric push rod (38), a stabilizing clamping plate (39), a protective partition frame (40), and a support connecting frame (49). The first L-shaped support frame (31) and the second L-shaped support frame (49) are... The support frames (34) are arranged in a mirror symmetrical manner. The fixed connecting plate (32) is fixedly connected between the upper ends of the first L-shaped support frame (31) and the second L-shaped support frame (34). The support connecting frame (49) is respectively arranged above the second L-shaped support frame (34) and the first L-shaped support frame (31). The third electric push rod (33) is fixedly installed on the support connecting frame (49), and the bottom end of the third electric push rod (33) is respectively connected to the second L-shaped support frame (34) and the first L-shaped support frame (31). 1) The upper middle part is fixedly connected, the protective partition frame (40) is respectively set on the inner side of the second L-shaped support frame (34) and the first L-shaped support frame (31), the stabilizing plate (39) is evenly fixedly connected to both sides of the protective partition frame (40), and the stabilizing plate (39) is evenly inserted and clamped on the second L-shaped support frame (34) and the first L-shaped support frame (31), the fourth electric push rod (38) is respectively fixedly installed on the second L-shaped support frame (34) and the first L-shaped support frame (31). 1) At the middle of the outer end, the front end of the fourth electric push rod (38) is fixedly connected to the middle of the outer end of the protective partition frame (40). The first connecting conveying pipe (36) and the second connecting conveying pipe (37) are fixedly installed at the two outer ends of the protective partition frame (40). The electric control valve (35) is set on the first connecting conveying pipe (36) and the second connecting conveying pipe (37). The first nozzle (29) and the second nozzle (30) are evenly staggered at the inner end of the protective partition frame (40).

5. The powder coating production line for agricultural machinery parts according to claim 4, characterized in that: The collection and protection body (5) includes a collection hole (41), a protective baffle (42), a limiting support frame (43), a baffle guide frame (44), a U-shaped fixing frame (45), an adjusting plate (46), a fifth electric push rod (47), and a discharge connecting pipe (48). The baffle guide frame (44) is located on the upper inner side of the limiting support frame (43). The protective baffle (42) is slidably engaged with the limiting support frame (43). The U-shaped fixing frame (45) is evenly and fixedly installed at the bottom of the limiting support frame (43). Located inside the U-shaped fixing frame (45), the recycling hole (41) is opened through the limiting support frame (43). The fifth electric push rod (47) is fixedly installed at the bottom of the limiting support frame (43). The U-shaped fixing frame (45) is fixedly connected to the bottom middle of the protective partition (42). The bottom end of the fifth electric push rod (47) is fixedly connected to the upper middle of the adjusting plate (46). The discharge connecting pipe (48) is symmetrically arranged at the bottom of the limiting support frame (43), and the recycling hole (41) is connected to the discharge connecting pipe (48).

6. The powder coating production line for agricultural machinery parts according to claim 5, characterized in that: The first L-shaped support frame (31) and the second L-shaped support frame (34) in the pretreatment body (1) and the spraying body (4) are both fixedly connected to the limiting support frame (43). The baffle guide frame (44) is located at the bottom of the pretreatment body (1), and the protective baffle cover (42) is located at the bottom of the spraying body (4).

7. The powder coating production line for agricultural machinery parts according to claim 6, characterized in that: The first L-shaped support frame (31) and the second L-shaped support frame (34) are fixedly connected to the side end of the track plate (6), the sliding frame (19) is slidably attached to the track plate (6), and the moving toothed plate (9) is fixedly connected to the side end of the sliding frame (19).

8. The powder coating production line for agricultural machinery parts according to claim 7, characterized in that: The fixed mounting bracket (2) is provided with evenly spaced fixing holes, and the bottom of the fixed mounting bracket (2) is fixedly connected to the outer end of the track plate (6) and the first L-shaped support bracket (31) and the second L-shaped support bracket (34) in the pretreatment body (1) and the spraying body (4). The support connecting bracket (49) is fixedly connected to the bottom of the fixed mounting bracket (2).

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