Equipment for spraying and plastic spraying of sheet metal part and technological method of equipment

Abstract

The invention relates to the technical field of metal surface treatment, and discloses sheet metal part spraying and plastic spraying equipment and a technological method.The sheet metal part spraying and plastic spraying equipment comprises a spraying chamber and a conveying mechanism, the spraying chamber is arranged in the middle of the conveying mechanism, and a material distributing plate is installed at the top of the spraying chamber; two spraying mechanisms are arranged on the side, close to the material distributing plate, of the interior of the spraying chamber, a plurality of evenly-distributed spraying guns are arranged in the two spraying mechanisms, an air pressure tank and a conveying pipe are installed on the side, close to the material distributing plate, of each spraying gun, and a pump body is installed on the side, away from the spraying guns, of each conveying pipe; and a paint storage tank is arranged on the rear side of the spraying chamber. The position and the angle of the spraying gun are accurately controlled, and the automatic adjusting device is utilized, so that the spraying gun can be dynamically adjusted according to the surface shape and the size of the sheet metal part, and all corners of a workpiece are uniformly and comprehensively covered with paint.

Description

Technical Field

[0001] The invention relates to the technical field of metal surface treatment, in particular to equipment for spraying and plastic spraying of sheet metal parts and a process method thereof. Background Art

[0002] Sheet metal refers to thin metal sheet products made by stamping, cutting, bending, welding and other processes. The thickness of sheet metal is relatively thin, generally between 0.5mm and 6mm. Common materials include steel, aluminum, stainless steel, copper, etc. Sheet metal is widely used in various types of machinery, automobiles, home appliances, construction and electronic products. It is used to manufacture housings, frames, brackets, pipes and other components. Through different processing methods, sheet metal can be formed into various complex shapes and structures according to needs.

[0003] Spray coating and plastic spraying for sheet metal is a process in which the paint is evenly sprayed on the surface of the metal sheet and cured by heating. This process not only provides a beautiful appearance, but also enhances the corrosion resistance, wear resistance and oxidation resistance of the sheet metal. Spray coating and plastic spraying are widely used in the automotive, home appliance, construction and other industries to ensure long-term and stable protection of the workpiece surface.

[0004] In the existing technology, in the process of sheet metal spraying, most of the automated equipment is used, and multiple high-pressure spray guns are used to evenly spray paint through pneumatic means. However, most of the existing equipment has fixed angles and positions of the spray guns. This method has certain limitations, especially when dealing with workpieces of different shapes and sizes. The spraying effect will be affected. Since the position and angle of the spray gun are fixed, problems such as uneven coating, missed spraying in certain areas or excessive coating will occur during the spraying process. This will not only lead to unstable coating quality, but also affect the durability and appearance quality of the workpiece, especially on sheet metal parts with complex shapes. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a sheet metal spraying and plastic spraying equipment and a process method thereof, which solves the problem that the prior art uses multiple high-pressure spray guns to evenly spray paint by pneumatic means, but most of the existing equipment has a fixed angle and position of the spray gun, which will result in uneven coating during the spraying process.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sheet metal spraying and plastic spraying equipment, comprising a spray chamber and a conveying mechanism, the spray chamber is arranged in the middle of the conveying mechanism, a dividing plate is installed on the top of the spray chamber, two spray mechanisms are arranged on the side of the spray chamber close to the dividing plate, a plurality of evenly distributed spray guns are arranged inside the two spray mechanisms, an air pressure tank and a conveying pipe are respectively installed on the side of the spray gun close to the dividing plate, a pump body is installed on the side of the conveying pipe away from the spray gun, a paint storage tank is arranged on the rear side of the spray chamber, a drying mechanism is installed on the right side of the spray chamber, and a recovery mechanism is arranged on the side of the spray chamber away from the spray mechanism; The spraying mechanism includes a movable frame, which slides inside the spraying room, electric sliders are fixed on both sides of the movable frame, sliding rods are fixed on both sides of the spraying room, the electric sliders slide on the outer periphery of the sliding rods, a mounting frame is rotatably provided on the front side of the movable frame, an adjusting component is provided inside the movable frame, the spray gun is installed inside the mounting frame, and a mounting component is provided on the outer periphery of the spray gun.

[0007] Preferably, the conveying mechanism includes two conveying frames, the two conveying frames pass through the middle of the spray chamber, the bottoms of the left and right sides of the two conveying frames are fixedly connected to support frames, the two conveying frames are provided with transmission belts on the sides facing each other, and a motor is installed on the side of one of the conveying frames away from the transmission belt.

[0008] Preferably, the recovery mechanism includes an air filter, which is installed at the bottom of the spray chamber, and dust suction fans are fixedly connected to the bottom of the front and rear sides of the air filter, and collection pipes are fixedly connected to the opposite sides of the two dust suction fans, and a collection frame is installed at the end of the collection pipe away from the dust suction fan, and activated carbon adsorption plates are installed on the front and rear sides of the interior of the air filter, and HEPA filters are installed on the opposite sides of the two activated carbon adsorption plates.

[0009] Preferably, the drying mechanism includes a protective shell, which is installed on the right side of the spray chamber, a heater is installed on the front side of the protective shell, a heating rod is installed on the side of the heater close to the protective shell, and a plurality of evenly distributed fans are installed on the top of the protective shell.

[0010] Preferably, the adjustment component includes an electric push rod, which is installed inside the movable frame. A connecting plate is installed at the bottom of the electric push rod, and tooth plates are fixedly connected to one end of the left and right sides of the connecting plate close to the spraying mechanism. Gears are rotatably connected to the left and right sides of the movable frame, and the tooth plates are meshed with the gears. A rotating shaft is fixedly connected to the inside of the two gears.

[0011] Preferably, the mounting assembly comprises a mounting block, the mounting block is fixed to the outer periphery of the spray gun, and bolts are threadedly connected to the front and rear sides of the mounting block.

[0012] Preferably, one end of the pump body away from the delivery pipe is installed on a side of the distribution plate close to the spraying room, and the paint storage tank is connected to the distribution plate through a pipeline.

[0013] Preferably, support rods are slidably connected inside one end of the left and right sides of the connecting plate away from the two tooth plates, and the upper and lower ends of the two support rods are fixedly connected to the inside of the movable frame.

[0014] Preferably, the two rotating shafts are respectively mounted on the left and right sides of the mounting frame, and the bolts are threadedly connected inside the mounting frame.

[0015] A sheet metal part spraying and plastic spraying process method comprises the following steps: The present invention provides a sheet metal spraying and plastic spraying equipment and a process method thereof. It has the following beneficial effects: S1: First, clean the sheet metal and place it on the transmission belt. Start the motor to drive the transmission belt to make the sheet metal enter the spray chamber. At the same time, the electric slider adjusts the height of the mounting frame to ensure that the position of the spray gun is suitable for the surface of the sheet metal. S2: Start the electric push rod and adjust the angle and position of the spray gun through the meshing of the tooth plate and the gear to ensure that the spray evenly covers every surface of the workpiece; S3: The paint is delivered to the spray gun through the pump body and the delivery pipe, and the spraying work begins. At the same time, the dust suction fan is started to suck in the paint particles in the air and process them through the air filter to ensure a clean working environment; S4: Start the heater and fan to dry the sheet metal with hot air to ensure that the coating is uniform and firm; S5: After spraying is completed, turn off the control system, stop the equipment, clean the residues on the spray gun and recovery device, and prepare for the next round of operations.

[0016] 1. The present invention accurately controls the position and angle of the spray gun and utilizes an automatic adjustment device to enable the spray gun to be dynamically adjusted according to the surface shape and size of the sheet metal, thereby ensuring that the paint evenly and comprehensively covers every corner of the workpiece. Through this precise control, coating defects caused by uneven coating thickness or spray leakage are avoided, thereby significantly improving the density, uniformity and adhesion of the coating, ensuring high-quality spraying effects, and enhancing the durability and appearance quality of the sheet metal.

[0017] 2. The present invention introduces a high-efficiency dust suction fan and air filtration system, which ensures the cleanliness and safety of the air in the spraying room by real-time absorption of paint mist particles and suspended matter generated during the spraying process. The paint particles are deeply purified through a multi-stage filtration system, including a HEPA filter and an activated carbon adsorption plate, which effectively prevents the spread of harmful substances and avoids air pollution. This not only improves the production environment, but also greatly reduces the concentration of harmful chemicals in the air, ensuring the health and safety of operators, while complying with environmental protection regulations.

[0018] 3. The present invention rapidly forms hot air flow through the efficient cooperation of the heater and the fan, which acts evenly on the surface of the sheet metal after spraying. The rapid flow of hot air ensures the uniform curing of the coating and avoids defects in the coating caused by uneven drying. At the same time, the acceleration of the drying process greatly shortens the production time of a single batch and improves the overall production efficiency. The high efficiency of the system also helps to reduce energy consumption and production costs, has significant economic benefits, and provides technical support for large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a structural schematic diagram of the transmission belt of the present invention; Figure 3 It is a structural schematic diagram of the spray chamber of the present invention; Figure 4 It is a structural schematic diagram of the movable frame of the present invention; Figure 5 It is a schematic diagram of the structure of the delivery pipe of the present invention; Figure 6 It is a structural schematic diagram of the gear of the present invention; Figure 7 It is a structural schematic diagram of the bolt of the present invention; Figure 8 It is a structural schematic diagram of the heating rod of the present invention; Fig. 9 It is a schematic structural diagram of the activated carbon adsorption plate of the present invention.

[0020] Among them, 1. spraying room; 2. transmission mechanism; 201. support frame; 202. conveying frame; 203. motor; 204. transmission belt; 3. spraying mechanism; 301. movable frame; 302. electric slider; 303. slide bar; 304. mounting frame; 4. adjustment component; 401. electric push rod; 402. connecting plate; 403. support rod; 404. tooth plate; 405. gear; 406. rotating shaft; 5. mounting component; 501. Bolts; 502, mounting block; 6, recovery mechanism; 601, air filter; 602, dust suction fan; 603, collection pipe; 604, collection frame; 605, HEPA filter; 606, activated carbon adsorption plate; 7, drying mechanism; 701, protective shell; 702, fan; 703, heating rod; 704, heater; 8, spray gun; 9, paint storage tank; 10, air pressure tank; 11, delivery pipe; 12, pump body; 13, material distribution plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1 - Attachment Figure 2 The embodiment of the present invention provides a sheet metal spraying and plastic spraying equipment, including a spraying chamber 1 and a conveying mechanism 2, the spraying chamber 1 is arranged in the middle of the conveying mechanism 2, a dividing plate 13 is installed on the top of the spraying chamber 1, two spraying mechanisms 3 are arranged on the side of the spraying chamber 1 close to the dividing plate 13, and a plurality of evenly distributed spray guns 8 are arranged inside the two spraying mechanisms 3, and a pressure tank 10 and a conveying pipe 11 are respectively installed on the side of the spraying gun 8 close to the dividing plate 13, a pump body 12 is installed on the side of the conveying pipe 11 away from the spraying gun 8, and one end of the pump body 12 away from the conveying pipe 11 is installed on the side of the dividing plate 13 close to the spraying chamber 1, a paint storage tank 9 is connected to the dividing plate 13 through a pipeline, a paint storage tank 9 is provided on the rear side of the spraying chamber 1, a drying mechanism 7 is installed on the right side of the spraying chamber 1, and a recovery mechanism 6 is provided on the side of the spraying chamber 1 away from the spraying mechanism 3; In the present invention, the spray chamber 1 and the conveying mechanism 2 ensure that the workpiece moves stably and enters the spraying area. The front side of the spray chamber 1 has an internal control system, and the control system integrates a PLC programming controller to realize the intelligent management of the entire spraying process and ensure the smooth progress of the spraying process. The dividing plate 13 is located on the top of the spray chamber 1 to evenly distribute the paint to prevent uneven flow of the paint into the spraying area, thereby improving the consistency and quality of the coating; the spray mechanism 3 is used to install the spray gun 8 to ensure that the paint is evenly sprayed on the surface of the workpiece, improve the adhesion and appearance quality of the coating, and the spray gun adopts a high-voltage electrostatic spray gun, model XG-68 0, the air pressure tank 10 provides a stable air pressure, and continuously delivers the paint to the spray gun through the delivery pipe 11, ensuring the efficiency and stability of the spraying process. The pump body 12 draws paint from the paint storage tank 9 to ensure the stability of the paint flow and pressure to avoid affecting the spraying effect; the paint storage tank 9 stores the paint and is connected to the spraying system to ensure sufficient paint supply. The drying mechanism 7 is used to quickly solidify the coating to ensure that the sheet metal parts are quickly dried after spraying. The recovery mechanism 6 effectively recovers exhaust gas and unattached paint, reduces waste and ensures the cleanliness of the working environment. The various parts work together to improve production efficiency, coating quality and environmental protection.

[0023] Please see attached Figure 3 - Attachment Figure 5 The spraying mechanism 3 includes a movable frame 301, which slides inside the spraying room 1. Electric sliders 302 are fixed on both sides of the movable frame 301. Slide rods 303 are fixed on both sides of the spraying room 1. The electric sliders 302 slide on the periphery of the slide rods 303. A mounting frame 304 is rotatably provided on the front side of the movable frame 301. An adjusting component 4 is provided inside the movable frame 301. A spray gun 8 is installed inside the mounting frame 304. A mounting component 5 is provided on the periphery of the spray gun 8.

[0024] In the present invention, the movable frame 301 slides in the spray chamber 1, and the electric sliders 302 fixed on both sides of the movable frame 301 slide along the slide rods 303 to ensure smooth movement, reduce friction, and improve stability and durability; the rotating mounting frame 304 installed on the front side of the movable frame 301 can adjust the angle and position of the spray gun 8 to ensure that each surface of the sheet metal is covered, and the spray gun 8 is firmly fixed by the mounting assembly 5 to avoid vibration or looseness affecting the spraying effect. The adjustment assembly 4 in the movable frame 301 can accurately adjust the position of the spray gun, so that the spraying mechanism can adapt to workpieces of different sizes and improve the spraying efficiency and coating quality.

[0025] Please see attached Figure 2 The conveying mechanism 2 includes two conveying racks 202, which run through the middle of the spray chamber 1. The bottoms of the left and right sides of the two conveying racks 202 are fixedly connected to support racks 201. The two conveying racks 202 are provided with transmission belts 204 on the opposite sides. A motor 203 is installed on the side of one of the conveying racks 202 away from the transmission belt 204.

[0026] In the present invention, the support frame 201 is used to provide support for the conveying frame 202. A transmission belt 204 is provided on the opposite side of the two conveying frames 202. The transmission belt 204 is used to control the orderly movement of the sheet metal in the spray chamber 1. The material of the transmission belt 204 is corrosion-resistant PVC material, which has strong bearing capacity and long service life. A motor 203 is installed on the side of one of the conveying frames 202 away from the transmission belt 204. The motor 203 is connected to the transmission belt 204 to provide power to drive the transmission belt 204 to run, thereby driving the sheet metal to move smoothly along the conveying frame 202.

[0027] Please see attached Figure 4 and attached Fig. 9 The recovery mechanism 6 includes an air filter 601, which is installed at the bottom of the spray chamber 1. Dust suction fans 602 are fixedly connected to the bottom of the front and rear sides of the air filter 601. Collection pipes 603 are fixedly connected to the opposite sides of the two dust suction fans 602. A collection frame 604 is installed at the end of the collection pipe 603 away from the dust suction fan 602. Activated carbon adsorption plates 606 are installed on the front and rear sides of the air filter 601, and HEPA filters 605 are installed on the opposite sides of the two activated carbon adsorption plates 606.

[0028] In the present invention, dust suction fans 602 are fixedly connected to the bottom of the front and rear sides of the air filter 601. The dust suction fan 602 sucks the exhaust gas and particles generated during the spraying process into the air filter 601 by strongly attracting the air flow. The sucked exhaust gas flows to the collection frame 604 through the connected collection pipe 603, which is convenient for subsequent treatment. An activated carbon adsorption plate 606 is arranged inside the air filter 601 to adsorb harmful gases in the paint and improve the filtering effect. HEPA filters 605 are installed on the opposite sides of the two activated carbon adsorption plates 606 to effectively filter tiny particles, especially those smaller than 0.3 microns, to ensure that the air quality in the spray room 1 meets environmental protection requirements, and the paint particles suspended in the air are sucked into the recovery device for treatment before being discharged.

[0029] Please see attached Figure 8 The drying mechanism 7 includes a protective shell 701, which is installed on the right side of the spray chamber 1. A heater 704 is installed on the front side of the protective shell 701. A heating rod 703 is installed on the side of the heater 704 close to the protective shell 701. A plurality of evenly distributed fans 702 are installed on the top of the protective shell 701.

[0030] In the present invention, the heater 704 is responsible for providing a heat source, the heating rod 703 provides stable heat by electric heating, and the fan 702 controls the flow of air. By controlling the air flow by the fan 702, the hot air can evenly cover the surface of the workpiece to ensure that the coating of the entire sheet metal is evenly dried; at the same time, the fan 702 can also help speed up the air flow to avoid bubbles or uneven drying on the coating surface due to excessively high temperature.

[0031] Please see attached Figure 6 The adjustment component 4 includes an electric push rod 401, which is installed inside the movable frame 301. A connecting plate 402 is installed at the bottom of the electric push rod 401. The left and right ends of the connecting plate 402 close to the spraying mechanism 3 are fixedly connected with tooth plates 404. The left and right sides of the inside of the movable frame 301 are rotatably connected with gears 405, and the tooth plates 404 are meshed with the gears 405. The left and right ends of the connecting plate 402 away from the two tooth plates 404 are slidably connected with support rods 403. The upper and lower ends of the two support rods 403 are fixedly connected to the inside of the movable frame 301. The insides of the two gears 405 are fixedly connected with rotating shafts 406, and the two rotating shafts 406 are respectively installed on the left and right sides of the mounting frame 304.

[0032] In the present invention, the electric push rod 401 is a short-stroke electric push rod, model La12, and its bottom is connected to the connecting plate 402, and tooth plates 404 are fixed on both sides of the connecting plate 402. The tooth plates 404 are meshed with the gears 405 inside the movable frame 301. The connecting plate 402 is pushed by the electric push rod 401 to move, thereby driving the gear 405 to rotate. A rotating shaft 406 is fixed inside the gear 405, and the rotating shaft 406 is installed on the left and right sides of the mounting frame 304, driving the mounting frame 304 and the spray gun 8 to rotate synchronously, and can flexibly adjust the angle and position of the spray gun to ensure that the spraying evenly covers the surface of the workpiece, thereby improving the spraying quality and efficiency.

[0033] Please see attached Figure 7 The mounting assembly 5 includes a mounting block 502 , which is fixed to the outer periphery of the spray gun 8 , and the front and rear sides of the mounting block 502 are both threadedly connected with bolts 501 , which are threadedly connected to the inside of the mounting frame 304 .

[0034] In the present invention, bolts 501 are threadedly connected on both the front and rear sides of the mounting block 502. The bolts 501 firmly connect the spray gun 8 to the inside of the mounting frame 304. The spray gun can be easily replaced through the threaded connection.

[0035] A sheet metal part spraying and plastic spraying process method comprises the following steps: S1: First, clean the sheet metal and place it on the transmission belt 204, start the motor 203 to drive the transmission belt 204 to operate, so that the sheet metal enters the spray chamber 1, and at the same time, the electric slider 302 adjusts the height of the mounting frame 304 to ensure that the position of the spray gun 8 is suitable for the surface of the sheet metal; S2: Start the electric push rod 401, and adjust the angle and position of the spray gun 8 by meshing the tooth plate 404 with the gear 405 to ensure that the spraying evenly covers every surface of the workpiece; S3: The paint is delivered to the spray gun 8 through the pump body 12 and the delivery pipe 11, and the spraying work starts. At the same time, the dust suction fan 602 is started to suck the paint particles in the air and process them through the air filter 601 to ensure a clean working environment; S4: Start the heater 704 and the fan 702 to dry the sheet metal with hot air to ensure that the coating is uniform and firm; S5: After spraying is completed, the control system is turned off, the equipment is stopped, and the residues of the spray gun 8 and the air filter 601 are cleaned to prepare for the next round of operations.

[0036] Working principle: When processing sheet metal parts, the sheet metal parts are placed on the transmission belt 204, and then the control system inside the spraying room 1 starts the motor 203, the electric slider 302, the heater 704 and the fan 702 in sequence, and then the motor 203 is started, and the transmission belt 204 is controlled by the motor 203 to drive the sheet metal parts to move, so that the sheet metal parts enter the spraying room 1, and after the sheet metal parts enter the spraying room 1, the painting work can be carried out; The electric slider 302 moves along the slide bar 303, so that the movable frame 301 drives the mounting frame 304 to move downward, and by starting the electric push rod 401, the electric push rod 401 controls the connection plate 402 to move. Because the connection plate 402 is connected to the toothed plate 404, when the connection plate 402 moves, the toothed plate 404 can be driven to move together, and the toothed plate 404 is meshed with the gear 405, so that when the toothed plate 404 moves, the gear 405 can be controlled to rotate, so that the mounting frame 304 can be driven to rotate together through the rotating shaft 406 inside the gear 405. After a series of operations, the position and angle of the spray gun 8 can be adjusted to cover all surfaces of the workpiece; Then, the paint is transported through the pump body 12 and the delivery pipe 11, and the paint is sprayed onto the surface of the workpiece by the air pressure tank 10, so as to carry out the spraying work. While spraying, the dust suction fan 602 is started, and the paint particles suspended in the air are sucked into the air filter 601 by the collection frame 604. After the paint particles enter the air filter 601, they are filtered by the HEPA filter 605 and the activated carbon adsorption plate 606, so as to be discharged in a centralized manner; When spraying paint, start the heater 704 and the fan 702. When the heater 704 is started, the temperature of the heating rod 703 will increase. When the fan 702 is started, the air flow will be controlled, so that hot air will be formed after the air passes through the heating rod 703, and the hot air will flow toward the workpiece, thereby drying the sheet metal. After completing a batch of operations, turn off the control system, clean the residues in the spray gun and the recovery device, and prepare for the next round of work.

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

Claims

1. A sheet metal spraying and plastic spraying device, comprising a spraying chamber (1) and a conveying mechanism (2), characterized in that: The spraying room (1) is arranged in the middle of the conveying mechanism (2), a material distribution plate (13) is installed on the top of the spraying room (1), two spraying mechanisms (3) are arranged on the side of the spraying room (1) close to the material distribution plate (13), a plurality of evenly distributed spraying guns (8) are arranged inside the two spraying mechanisms (3), a pressure tank (10) and a conveying pipe (11) are respectively installed on the side of the spraying gun (8) close to the material distribution plate (13), a pump body (12) is installed on the side of the conveying pipe (11) away from the spraying gun (8), a paint storage tank (9) is arranged on the rear side of the spraying room (1), a drying mechanism (7) is installed on the right side of the spraying room (1), and a recovery mechanism (6) is arranged on the side of the spraying room (1) away from the spraying mechanism (3); The spraying mechanism (3) comprises a movable frame (301), the movable frame (301) slides inside the spraying room (1), electric sliders (302) are fixed on both the left and right sides of the movable frame (301), sliding rods (303) are fixed on both the left and right sides of the spraying room (1), the electric sliders (302) slide on the periphery of the sliding rods (303), a mounting frame (304) is rotatably provided on the front side of the movable frame (301), an adjusting component (4) is provided inside the movable frame (301), the spraying gun (8) is installed inside the mounting frame (304), and a mounting component (5) is provided on the periphery of the spraying gun (8).

2. The equipment for spraying and plastic spraying of sheet metal parts according to claim 1, characterized in that: The conveying mechanism (2) comprises two conveying racks (202), the two conveying racks (202) passing through the middle of the spray chamber (1), the bottoms of the left and right sides of the two conveying racks (202) are fixedly connected to support racks (201), the two conveying racks (202) are provided with transmission belts (204) on the sides facing each other, and a motor (203) is installed on the side of one of the conveying racks (202) away from the transmission belt (204).

3. The equipment for spraying and plastic spraying of sheet metal parts according to claim 1, characterized in that: The recovery mechanism (6) comprises an air filter (601), wherein the air filter (601) is installed at the bottom of the spray chamber (1), and dust suction fans (602) are fixedly connected to the bottom of both the front and rear sides of the air filter (601), and collection pipes (603) are fixedly connected to the opposite sides of the two dust suction fans (602), and a collection frame (604) is installed at one end of the collection pipe (603) away from the dust suction fans (602), and activated carbon adsorption plates (606) are installed on the front and rear sides of the air filter (601), and HEPA filters (605) are installed on the opposite sides of the two activated carbon adsorption plates (606).

4. The equipment for spraying and plastic spraying of sheet metal parts according to claim 1, characterized in that: The drying mechanism (7) comprises a protective shell (701), wherein the protective shell (701) is installed on the right side of the spray chamber (1), a heater (704) is installed on the front side of the protective shell (701), a heating rod (703) is installed on the side of the heater (704) close to the protective shell (701), and a plurality of evenly distributed fans (702) are installed on the top of the protective shell (701).

5. The equipment for spraying and plastic spraying of sheet metal parts according to claim 1, characterized in that: The adjustment component (4) comprises an electric push rod (401), wherein the electric push rod (401) is installed inside the movable frame (301), a connecting plate (402) is installed at the bottom of the electric push rod (401), and tooth plates (404) are fixedly connected to one end of the left and right sides of the connecting plate (402) close to the spraying mechanism (3), and gears (405) are rotatably connected to the left and right sides of the movable frame (301), the tooth plates (404) are meshed with the gears (405), and the insides of the two gears (405) are fixedly connected to a rotating shaft (406).

6. The equipment for spraying and plastic spraying of sheet metal parts according to claim 5, characterized in that: The mounting assembly (5) comprises a mounting block (502), wherein the mounting block (502) is fixed to the outer periphery of the spray gun (8), and bolts (501) are threadedly connected to the front and rear sides of the mounting block (502).

7. The equipment for spraying and plastic spraying of sheet metal parts according to claim 1, characterized in that: One end of the pump body (12) away from the delivery pipe (11) is installed on a side of the material distribution plate (13) close to the spraying room (1), and the paint storage tank (9) is connected to the material distribution plate (13) through a pipeline.

8. The equipment for spraying and plastic spraying of sheet metal parts according to claim 5, characterized in that: Support rods (403) are slidably connected inside the left and right sides of the connection plate (402) at one end away from the two tooth plates (404), and the upper and lower ends of the two support rods (403) are fixedly connected inside the movable frame (301).

9. The equipment for spraying and plastic spraying of sheet metal parts according to claim 6, characterized in that: The two rotating shafts (406) are respectively mounted on the left and right sides of the mounting frame (304), and the bolts (501) are threadedly connected inside the mounting frame (304).

10. A sheet metal spraying and plastic spraying process, characterized in that: The equipment for spraying and plastic spraying of sheet metal parts according to any one of claims 1 to 9 comprises the following steps: S1: First, clean the sheet metal part and place it on the transmission belt (204), start the motor (203) to drive the transmission belt to move, so that the sheet metal part enters the spray chamber (1), and at the same time, the electric slider (302) adjusts the height of the mounting frame (304) to ensure that the position of the spray gun (8) is suitable for the surface of the sheet metal part; S2: Start the electric push rod (401) to adjust the angle and position of the spray gun (8) by meshing the tooth plate (404) with the gear (405) to ensure that the spraying evenly covers every surface of the workpiece; S3: The paint is delivered to the spray gun (8) through the pump body (12) and the delivery pipe (11), and the spraying work is started. At the same time, the dust suction fan (602) is started to suck in the paint particles in the air and process them through the air filter (601) to ensure a clean working environment; S4: starting the heater (704) and the fan (702) to dry the sheet metal part with hot air to ensure that the coating is uniform and strong; S5: After spraying is completed, the control system is turned off, the equipment is stopped, and the spray gun (8) and the recovery device (604) are cleaned of residues to prepare for the next round of operation.

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