A dust removal device and method for a spray painting production line

Abstract

The application discloses a dust removal device and method for a spraying production line, and belongs to the technical field of product dust removal. The dust removal device comprises a conveying mechanism, and upper and lower feeding areas are arranged at two ends of the conveying mechanism. A manual dust removal area, a brush dust removal mechanism, a single-workpiece electrostatic dust removal mechanism and a flame dust removal mechanism are sequentially arranged along the conveying direction between the upper and lower feeding areas, and manual wiping, brush sweeping, ionized high-pressure airflow blowing and flame burning are sequentially performed on the workpiece. A multi-workpiece dust removal mechanism is arranged on one side of the lower feeding area, and the multi-workpiece dust removal mechanism comprises an air shower room, an electrostatic generator and a conveying chain. After the workpiece is discharged, the workpiece is fixed on a hanging bracket and is sent to the air shower room through the conveying chain, ionized air is blown to the workpiece through the electrostatic generator, and electrostatic dust removal is realized. The device combines multiple dust removal modes, can effectively remove various pollutants on the surface of the workpiece, improves dust removal efficiency, is suitable for different workpieces and improves spraying quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of product dust removal, and in particular to a dust removal device and method for a spraying production line. BACKGROUND

[0002] In the spraying production process, the cleanliness of the workpiece surface has a crucial influence on the spraying quality. If there are dust, oil stains, impurities and other pollutants on the surface of the workpiece, the adhesion of the spraying layer to the workpiece surface will decrease, resulting in defects such as peeling, blistering and pinholes, which seriously affect the appearance quality and service life of the product.

[0003] At present, the existing dust removal devices and methods for spraying production lines have some deficiencies. Some dust removal devices only adopt a single dust removal method, such as simple brush wiping or single electrostatic dust removal, which is difficult to completely remove various pollutants on the surface of the workpiece, especially for some small particles and stubborn oil stains, and the dust removal effect is poor. In addition, some dust removal methods have low efficiency in the operation process and cannot meet the needs of large-scale production, and have poor adaptability to workpieces of different shapes and materials. Therefore, it is of great practical significance to develop an efficient and complete dust removal device and method for a spraying production line. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application aims to provide a dust removal device and method for a spraying production line to solve the problems of single dust removal method and poor dust removal effect.

[0005] A dust removal device for a spraying production line, comprising a conveying mechanism for conveying products, one end of the conveying mechanism being provided with a feeding area and the other end being provided with a discharging area, the dust removal device further comprising a manual dust removal area, a brush dust removal mechanism, a single-workpiece electrostatic dust removal mechanism and a flame dust removal mechanism arranged in sequence along the conveying direction, the conveying mechanism driving the workpiece to pass through the manual dust removal area, the brush dust removal mechanism, the single-workpiece electrostatic dust removal mechanism and the flame dust removal mechanism in sequence for dust removal; the dust removal device further comprising a multi-workpiece dust removal mechanism arranged on one side of the discharging area, the multi-workpiece dust removal mechanism comprising an air shower room, a static electricity generator installed inside the air shower room and a conveying chain suspendedly installed on the top of the air shower room, the workpiece being fixed on a hanger after being discharged in the discharging area, the hanger being hung on the conveying chain to be conveyed into the air shower room after being loaded with workpieces, a plurality of air shower nozzles being arranged in the air shower room, the static electricity generator generating a high-voltage electric field in the air shower room to ionize air and generate ions, the ions being blown to the surface of the workpiece by the airflow blown out of the air shower nozzles to neutralize static electricity and remove dust.

[0006] Based on the above-mentioned dust removal device for a spraying production line, the present application further provides a dust removal method for a spraying production line, comprising:

[0007] S1: Feeding:

[0008] The worker fixes the support member to the workpiece in the feeding area, and then fixes the support member to the conveying mechanism. The conveying mechanism is started to drive the workpiece to the subsequent dust removal area;

[0009] S2: Manual dust removal:

[0010] Dust-free glove wiping: When the workpiece is conveyed to the dust-free glove wiping group in the manual dust removal area, at least two workers wear dust-free gloves to wipe the surface of the workpiece. Each worker changes a new dust-free glove after wiping 10-20 workpieces;

[0011] Alcohol wiping: After dust-free glove wiping, the workpiece enters the alcohol wiping group. The worker wears a dust-free glove and uses a dust-free cloth dipped in alcohol to wipe the surface of the workpiece. Each worker changes a new dust-free cloth after wiping 10-20 workpieces;

[0012] S3: Brush dust removal:

[0013] Movable brush dust removal: The workpiece enters the movable brush group area in the brush dust removal area. The driving motor on the first support frame is started to drive the first brush to rotate and sweep the top of the workpiece to remove dust;

[0014] Fixed brush dust removal: Then, the workpiece enters the fixed brush group area. The multiple second brushes on the second support frame sweep the side and top of the workpiece to remove dust;

[0015] S4: Single workpiece electrostatic dust removal:

[0016] The workpiece enters the single workpiece electrostatic dust removal area. The ionization head at the end of the first cantilever on the third support frame ionizes air to form ions under the action of a high-voltage power supply. The air pump delivers high-pressure airflow to the airflow nozzle through the air pipe, blows the ions to the surface of the workpiece, neutralizes the static electricity on the surface of the workpiece, and carries away the dust;

[0017] S5: Flame dust removal. The workpiece enters the flame dust removal area. The relative position between the flame nozzle and the workpiece is adjusted. The fuel pump delivers fuel to the flame nozzle through the delivery pipe. The flame nozzle sprays flame to burn and remove dust on the surface of the workpiece by smokeless flame;

[0018] S6: Discharging and multi-workpiece dust removal:

[0019] Discharging: The workpiece is conveyed to the discharging area, and the worker takes the workpiece off the conveying mechanism and fixes it on the hanger;

[0020] Multi-workpiece conveying: When the hanger is full of workpieces, it is hung on the conveying chain at the top of the air shower room. The conveying chain is started to drive the hanger to the air shower room;

[0021] Multi-workpiece dust removal: after the hanger enters the wind shower room, the air blower works, blows air into the wind shower room through the wind shower nozzle, and the electrostatic emission rod of the electrostatic generator ionizes the air blown into the wind shower room to form ions, which are blown to the surface of the workpiece, neutralize the static electricity on the workpiece and carry away dust.

[0022] Advantages of the present application:

[0023] The dust removal device for a spraying production line of the present application, by setting a manual dust removal area, a brush dust removal mechanism, a single workpiece electrostatic dust removal mechanism, a flame dust removal mechanism and a multi-workpiece dust removal mechanism, adopts a combination of multiple dust removal methods, can completely remove dust, oil stains, impurities and various pollutants on the surface of the workpiece, especially has good dust removal effect on tiny particles and stubborn oil stains, improves the dust removal efficiency, meets the large-scale production demand, and has stronger adaptability to workpieces of different shapes and materials, effectively improves the spraying quality, and guarantees the appearance quality and service life of the product. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0025] Figure 1 It is a plan layout of the dust removal device in the present embodiment;

[0026] Figure 2 It is a front structure schematic view of the wind shower room in the present embodiment;

[0027] Figure 3 It is a side structure schematic view of the main panel in the present embodiment;

[0028] Figure 4 It is a structure schematic view of the movable brush group in the present embodiment;

[0029] Figure 5 It is a structure schematic view of the fixed brush group in the present embodiment;

[0030] Figure 6 It is a structure schematic view of the single workpiece electrostatic dust removal mechanism in the present embodiment;

[0031] Figure 7 It is a side view of the flame dust removal mechanism in the present embodiment;

[0032] Figure 8 It is a top view of the flame dust removal mechanism in the present embodiment;

[0033] The reference signs are: 1-conveying mechanism, 2-feeding area, 3-discharging area, 4-manual dust removal area, 5-brush dust removal mechanism, 6-single workpiece electrostatic dust removal mechanism, 7-flame dust removal mechanism, 9-air shower, 10-static electricity generator, 11-conveying chain, 12-hanging bracket, 16-movable brush group, 17-fixed brush group, 18-first support frame, 19-driving motor, 20-first brush, 21-first channel, 22-second support frame, 23-second brush, 24-second channel, 26-third support frame, 27-first cantilever, 28-airflow nozzle, 29-ionization head, 30-rotary handle, 32-fourth support frame, 33-second cantilever, 34-adjusting seat, 35-flame nozzle, 36-multi-workpiece dust removal mechanism, 37-main body panel, 38-air shower nozzle, 39-air outlet, 40-static electricity emitting rod. DETAILED DESCRIPTION

[0034] The application provides a dust removal device and method for a spraying production line. To make the purpose, technical scheme and effects of the application more clear and explicit, the application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0035] In the description of the application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0036] Please refer to Figures 1 to 8 :

[0037] The embodiment discloses a dust removal device for a spraying production line, which comprises a conveying mechanism 1 for conveying products, the conveying mechanism 1 is provided with a feeding area 2 at one end and a discharging area 3 at the other end, workers fix the support and the workpiece in the feeding area 2, then fix the support on the conveying mechanism 1 to convey the workpiece, and then discharge the workpiece by workers when the workpiece is conveyed to the discharging area 3; the dust removal device further comprises a manual dust removal area 4, a brush dust removal mechanism 5, a single workpiece electrostatic dust removal mechanism 6 and a flame dust removal mechanism 7 which are sequentially arranged along the conveying direction between the feeding area 2 and the discharging area 3, when the workpiece is conveyed through the manual dust removal area 4 by the conveying mechanism 1, the workpiece surface is manually wiped by workers, when the workpiece is conveyed through the brush dust removal mechanism 5, the workpiece surface is automatically brushed by the brush, when the workpiece is conveyed through the single workpiece electrostatic dust removal mechanism 6, the workpiece surface is blown by the ionized high-pressure airflow, and when the workpiece is conveyed through the flame dust removal mechanism 7, the workpiece surface is burned by the smokeless flame; in addition, the dust removal device further comprises a multi-workpiece dust removal mechanism 36 arranged at one side of the discharging area 3, the multi-workpiece dust removal mechanism 36 comprises an air shower room 9, an electrostatic generator 10 arranged in the air shower room 9 and a conveying chain 11 suspendedly arranged at the top of the air shower room 9, after the workpiece is discharged in the discharging area 3, the workpiece is fixed on a hanger 12, a plurality of workpieces can be fixed on the hanger 12, when the hanger 12 is full of workpieces, the hanger 12 is hung on the conveying chain 11 to be conveyed, the hanger 12 is sent to the air shower room 9 through the conveying chain 11, a plurality of air shower nozzles 38 are arranged in the air shower room 9, the electrostatic generator generates a high-voltage electric field in the air shower room 9 to ionize the air to generate ions, the ions are blown to the workpiece surface by the airflow blown by the air shower nozzles 38, on the one hand, the static electricity on the workpiece is neutralized, on the other hand, the dust attached to the workpiece is electrified and separated, so that the dust removal purpose is achieved, and thus the multi-workpiece dust removal is completed, finally, the hanger 12 is sent to the spraying production line by the conveying chain 11 to spray the workpiece.

[0038] In the embodiment, the manual dust removal area 4 comprises a dust-free glove wiping group and an alcohol wiping group which are sequentially arranged along the conveying direction, the dust-free glove wiping group and the alcohol wiping group are each provided with at least two workers, the workers of the dust-free glove wiping group wipe the workpiece surface by wearing dust-free gloves with both hands, each worker changes a new dust-free glove after wiping 10-20 workpieces, and two or more workers can alternately or rotationally wipe to ensure the normal progress of the dust removal process; in addition, the workers of the alcohol wiping group wipe the workpiece surface by using dust-free cloth dipped with alcohol under the condition of wearing dust-free gloves, each worker changes a new dust-free cloth after wiping 10-20 workpieces, and two or more workers can alternately or rotationally wipe to ensure the normal progress of the dust removal process.

[0039] In the embodiment, as shown in Figure 1 and Figure 4As shown in the figure, the brush dust removal mechanism 5 is arranged in the brush dust removal area, and the brush dust removal mechanism 5 includes a movable brush group 16 and a fixed brush group 17. The movable brush group 16 includes a first support frame 18 arranged above the conveying mechanism 1, a driving motor 19 fixed on the first support frame 18, and a first brush 20 fixedly connected to the driving end of the driving motor 19. The first support frame 18 and the conveying mechanism 1 form a first channel 21 for the workpiece to pass through. The driving end of the driving motor 19 extends downward from the top of the first support frame 18 into the first channel 21. The handle of the first brush 20 is fixedly connected to the driving end of the driving motor 19, and the brush of the first brush 20 can touch the workpiece. When the driving motor 19 works, it drives the first brush 20 to rotate, and the rotating first brush 20 sweeps and removes dust from the top of the workpiece. In addition, the driving motor 19 and the first brush 20 are arranged on the first support frame 18 in at least two groups and are arranged in a spaced manner along the conveying direction of the conveying mechanism 1.

[0040] Further, as shown in the figure, Figure 5 The fixed brush group 17 includes a second support frame 22 arranged above the conveying mechanism 1 and a plurality of second brushes 23 fixed on the second support frame 22. The second support frame 22 and the conveying mechanism 1 form a second channel 24 for the workpiece to pass through. The plurality of second brushes 23 are respectively located above, left and right of the second channel 24. When the workpiece passes through the second channel 24, the second brushes 23 can sweep and remove dust from the side and top of the workpiece.

[0041] In this embodiment, as shown in the figure, Figure 1 And Figure 6As shown, the single workpiece electrostatic dust removal mechanism 6 is arranged in the single workpiece electrostatic dust removal area, and the single workpiece electrostatic dust removal mechanism 6 comprises a third support frame 26 fixed in the single workpiece electrostatic dust removal area, a first cantilever 27 adjustably mounted on the third support frame 26, and an airflow nozzle 28 and an ionization head 29 fixed at the end of the first cantilever 27, wherein the airflow nozzle 28 is connected with an air pump through an air pipe, and the ionization head 29 is connected with a high-voltage power supply through a cable. When the ionization head 29 forms a stable strong electric field under the action of the high-voltage power supply, and ionizes the air to form positive and negative ions, the positive and negative ions are then blown to the surface of the workpiece by high-pressure airflow, so as to achieve the purpose of neutralizing static electricity and removing dust. The end of the first cantilever 27 away from the airflow nozzle 28 and the ionization head 29 is tightly fixed on the third support frame 26 through a swivel handle 30. Specifically, an adjusting hole is arranged on the top of the third support frame 26, the first cantilever 27 is slidingly fitted in the adjusting hole, and a stud is arranged at the center of the swivel handle 30. The swivel handle 30 is screwed into the adjusting hole from the side of the third support frame 26 to tightly fix the first cantilever 27. When it is necessary to adjust the distance between the airflow nozzle 28 and the ionization head 29 and the workpiece, the swivel handle 30 is loosened first, and then the first cantilever 27 is pushed to slide to different positions in the adjusting hole. Finally, the swivel handle 30 is tightened again to tightly fix the first cantilever 27, so that the position adjustment is realized.

[0042] As shown in the embodiment, Figure 7 and Figure 8 The flame dust removal mechanism 7 is arranged in the flame dust removal area, and the flame dust removal mechanism 7 comprises a fourth support frame 32 fixed in the flame dust removal area, a second cantilever 33 connected to the fourth support frame 32, an adjusting seat 34 movably mounted on the second cantilever 33, and a flame nozzle 35 fixed on the adjusting seat 34. The flame nozzle 35 is connected with a fuel pump for outputting fuel through a delivery pipe. The fuel pump is a common component on the market, and the specific model specification can refer to the AJ6CC BTL160P special oil pump of the SUNTEC brand. Methanol can be used as fuel to achieve smokeless combustion. In addition, the adjusting seat 34 is tightly fixed on the second cantilever 33 through a swivel handle 30. Specifically, a through hole is arranged on the adjusting seat 34, and the adjusting seat 34 is slidingly sleeved on the second cantilever 33 through the through hole. The swivel handle 30 is screwed into the through hole from the side of the adjusting seat 34 and tightly fixes the second cantilever 33. When it is necessary to adjust the relative position between the flame nozzle 35 and the workpiece, the swivel handle 30 is loosened first, and then the adjusting seat 34 is pushed to slide to different positions of the second cantilever 33. Finally, the swivel handle 30 is tightened again to fix the second cantilever 33, so that the position adjustment is realized. At the same time, at least two groups of flame dust removal mechanisms 7 are arranged in the flame dust removal area to improve the dust removal effect.

[0043] As shown in the embodiment,Figure 2 and Figure 3 As shown in the figure, the multi-workpiece dust removal mechanism 36 is arranged in the multi-workpiece dust removal area, the air shower room 9 includes two groups of symmetrically arranged main panels 37, the conveying chain 11 is installed on the top of the two groups of main panels 37, and the hanger 12 is hung on the conveying chain 11 and located in the center of the two groups of main panels 37; a plurality of air shower nozzles 38 are arranged on the upper part of the inner side of the two groups of main panels 37, and the lower part of the inner side of the main panel 37 is provided with an air outlet 39; the air shower nozzle 38 is connected with a blower arranged in the main panel 37, and a grid is arranged at the air outlet 39; the electrostatic generator 10 includes a plurality of electrostatic emission rods 40 arranged on the inner side of the main panel 37, the electrostatic emission rods 40 are arranged between the plurality of air shower nozzles 38 and connected with a high-voltage power supply, for emitting high-voltage positive or negative electricity, so that the wind blown by the air shower nozzle 38 is ionized by the high-voltage electricity generated by the electrostatic emission rod 40 to form positive and negative ions and blow to the workpiece; it should be noted that the air shower nozzles 38 on the main panels 37 on both sides are inclined downward by a certain angle so that the wind can be blown obliquely downward, and when the air shower nozzles 38 on the main panels 37 on both sides blow wind at the same time, interaction can be formed in the center to guide the wind on both sides to the air outlet 39 to flow out and carry away dust, thereby achieving the dust removal effect.

[0044] Based on the above dust removal device, the embodiment further provides a dust removal method for a spraying production line, comprising:

[0045] S1: feeding

[0046] The worker fixes the support piece and the workpiece in the feeding area 2, and then fixes the support piece on the conveying mechanism 1. The conveying mechanism 1 is started to drive the workpiece to the subsequent dust removal area.

[0047] S2: manual dust removal

[0048] Dust-free glove wiping: when the workpiece is conveyed to the dust-free glove wiping group in the manual dust removal area 4, at least two workers wear dust-free gloves to wipe the surface of the workpiece. Each worker changes a new dust-free glove after wiping 10-20 workpieces, and two or more workers can wipe alternately or in turn to ensure the normal operation of the dust removal process.

[0049] Alcohol wiping: after dust-free glove wiping, the workpiece enters the alcohol wiping group. The worker wears a dust-free glove and uses a dust-free cloth dipped in alcohol to wipe the surface of the workpiece. Each worker changes a new dust-free cloth after wiping 10-20 workpieces, and two or more workers can wipe alternately or in turn.

[0050] S3: brush dust removal

[0051] Active brush dust removal: When the workpiece enters the active brush dust removal area of the brush group 16, the driving motor 19 on the first support frame 18 starts to drive the first brush 20 to rotate. Since the brush part of the first brush 20 can touch the workpiece, the rotating first brush 20 sweeps and removes dust from the top of the workpiece. At least two groups of driving motors 19 and first brushes 20 are arranged at intervals, which can comprehensively sweep the top of the workpiece.

[0052] Fixed brush dust removal: Then, the workpiece enters the fixed brush group 17 area, and the multiple second brushes 23 on the second support frame 22 are respectively located on the left, right and upper sides of the second channel 24. When the workpiece passes through the second channel 24, the second brush 23 sweeps and removes dust from the side and top of the workpiece.

[0053] S4: Single workpiece electrostatic dust removal

[0054] When the workpiece enters the single workpiece electrostatic dust removal area, the ionizing head 29 at the end of the first cantilever 27 on the third support frame 26 forms a stable high-strength electric field under the action of the high-voltage power supply, and ionizes the air to form ions. At the same time, the air pump delivers high-pressure airflow to the airflow nozzle 28 through the air pipe, blows the ions to the surface of the workpiece, neutralizes the static electricity on the surface of the workpiece, and carries away the dust. If it is necessary to adjust the distance between the airflow nozzle 28 and the ionizing head 29 and the workpiece, the knob 30 on the first cantilever 27 can be loosened for adjustment, and then tightened after adjustment.

[0055] S5: Flame dust removal

[0056] When the workpiece enters the flame dust removal area, the adjustment seat 34 on the second cantilever 33 of the fourth support frame 32 can adjust the relative position between the flame nozzle 35 and the workpiece by loosening the knob 30 according to the condition of the workpiece. After adjustment, tighten the knob 30 to fix it. The fuel pump delivers fuel (such as methanol) to the flame nozzle 35 through the delivery pipe, and the flame nozzle 35 sprays flame to burn and remove dust on the surface of the workpiece. At least two groups of flame dust removal mechanisms 7 are provided in the flame dust removal area to improve the dust removal effect.

[0057] S6: Feeding and multi-workpiece dust removal

[0058] Feeding: The workpiece is conveyed to the feeding area 3, and the workpiece is taken off from the conveying mechanism 1 by the worker and fixed on the hanger 12. The hanger 12 can fix several workpieces.

[0059] Multi-workpiece conveying: When the hanger 12 is full of workpieces, it is hung on the conveying chain 11 at the top of the air shower room 9. The conveying chain 11 starts to drive the hanger 12 to convey into the air shower room 9.

[0060] Multi-piece dust removal: after the hanger 12 enters the wind shower room 9, it is located in the center of the two groups of main panels 37. The blower works to blow air into the wind shower room 9 through the wind shower nozzle 38, and the electrostatic generator 10 emits high-voltage positive or high-voltage negative electricity from the electrostatic emission rod 40 to ionize the air blown into the wind shower room 9 to form ions. The ions are blown to the surface of the workpiece, neutralize the static electricity on the workpiece, and carry away the dust. The wind shower nozzles 38 on the main panels 37 on both sides are inclined downward at a certain angle, so that the wind can be blown obliquely downward. When the wind shower nozzles 38 on the main panels 37 on both sides blow air at the same time, an interaction is formed in the center to guide the air on both sides to the air outlet 39 to flow out and carry away the dust.

[0061] The preferred embodiments of the application are specifically described above, but the application is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the application.

Claims

1. A dust removal device for a spray painting production line, comprising a conveying mechanism for conveying products, wherein one end of the conveying mechanism is provided with a loading area and the other end with a unloading area, characterized in that, Located between the loading and unloading areas, the dust removal device also includes a manual dust removal area, a brush dust removal mechanism, a single-workpiece electrostatic dust removal mechanism, and a flame dust removal mechanism arranged sequentially along the conveying direction. The conveying mechanism drives the workpieces through the manual dust removal area, the brush dust removal mechanism, the single-workpiece electrostatic dust removal mechanism, and the flame dust removal mechanism in sequence for dust removal. The dust removal device also includes a multi-workpiece dust removal mechanism located on one side of the unloading area. The multi-workpiece dust removal mechanism includes an air shower, an electrostatic generator installed inside the air shower, and a conveyor chain suspended from the top of the air shower. After the workpieces are unloaded in the unloading area, they are fixed on the hanger. When the hanger is full of workpieces, it is hung on the conveyor chain and conveyed to the air shower. The air shower is equipped with several air shower nozzles. The electrostatic generator generates a high-voltage electric field in the air shower to ionize the air and generate ions. These ions are blown onto the surface of the workpiece by the airflow from the air shower nozzles to neutralize static electricity and carry away dust. The brush dust removal mechanism includes a movable brush group and a fixed brush group. The movable brush group includes a first support frame mounted above the conveying mechanism, a drive motor fixed on the first support frame, and a first brush fixedly connected to the drive end of the drive motor. A first channel for the workpiece to pass through is formed between the first support frame and the conveying mechanism. The drive end of the drive motor extends downward from the top of the first support frame into the first channel. After the handle of the first brush is fixedly connected to the drive end of the drive motor, the brush head of the first brush can touch the workpiece. When the drive motor is working, it drives the first brush to rotate and sweep the top of the workpiece to remove dust. At least two sets of the drive motor and the first brush are provided and arranged at intervals on the first support frame. The fixed brush assembly includes a second support frame mounted above the conveying mechanism and multiple second brushes fixed on the second support frame. A second channel for workpieces to pass through is formed between the second support frame and the conveying mechanism. The multiple second brushes are located on the left, right, and top of the second channel, respectively. When the workpiece passes through the second channel, the second brushes can sweep and brush the sides and top of the workpiece to remove dust. The single-workpiece electrostatic dust removal mechanism includes a third support frame fixed in the single-workpiece electrostatic dust removal area, a first cantilever adjustablely mounted on the third support frame, and an airflow nozzle and an ionization head fixed at the end of the first cantilever. The airflow nozzle and the ionization head are fixed on the first cantilever at the end closest to the workpiece. The airflow nozzle is connected to an air pump via an air pipe, and the ionization head is connected to a high-voltage power supply via a cable. The end of the first cantilever away from the airflow nozzle and the ionization head is tightened and fixed to the third support frame by a handle. When it is necessary to adjust the distance between the airflow nozzle and the ionization head and the workpiece, it can be adjusted by loosening the handle.

2. The dust removal device for a spray coating production line according to claim 1, characterized in that, The manual dust removal area includes a cleanroom glove wiping group and an alcohol wiping group arranged sequentially along the conveying direction. Each cleanroom glove wiping group and the alcohol wiping group are staffed with at least two workers. The workers in the cleanroom glove wiping group wipe the surface of the workpieces with cleanroom gloves on both hands, and each worker changes to a new cleanroom glove after wiping 10-20 workpieces. The workers in the alcohol wiping group wipe the surface of the workpieces with cleanroom cloths soaked in alcohol while wearing cleanroom gloves, and each worker changes to a new cleanroom cloth after wiping 10-20 workpieces.

3. The dust removal device for a spray coating production line according to claim 1, characterized in that, The flame dust removal mechanism is located within the flame dust removal zone. The flame dust removal mechanism includes a fourth support frame fixed within the flame dust removal zone, a second cantilever connected to the fourth support frame, an adjusting seat movably mounted on the second cantilever, and a flame nozzle fixed on the adjusting seat. The flame nozzle is connected to a fuel pump for outputting fuel via a delivery pipe. The adjusting seat is fixed to the second cantilever by tightening a handle. The relative position between the flame nozzle and the workpiece can be adjusted by loosening the handle. At least two sets of flame dust removal mechanisms are provided within the flame dust removal zone.

4. The dust removal device for a spray coating production line according to claim 1, characterized in that, The air shower chamber includes two symmetrically arranged main panels. The conveyor chain is installed on the top of the two main panels, and the hanger is suspended on the conveyor chain and located in the center of the two main panels. Several air shower nozzles are evenly arranged on the upper part of the inner side of the two main panels, while the lower part of the inner side of the main panels has an air outlet. The air shower nozzles are connected to a blower located inside the main panel through an air duct. The air outlet is equipped with a grid. The electrostatic generator includes multiple electrostatic emission rods arranged on the inner side of the main panel. The electrostatic emission rods are arranged between the air shower nozzles and connected to a high-voltage power supply. The air shower nozzles on both sides of the main panels are all angled downwards towards the center of the air shower chamber so that the airflow can fully cover the workpiece located in the center. The dust-removed airflow is finally discharged from the air outlet located at the lower part of the main panel.

5. A dust removal method for a spray painting production line, based on the dust removal device for a spray painting production line according to any one of claims 1-4, characterized in that, include: S1: Loading materials: Workers use support components to fix the workpiece in the loading area, and then fix the support components on the conveying mechanism. The conveying mechanism is started, which drives the workpiece to the subsequent dust removal area. S2: Manual dust removal: Cleanroom glove wiping: When the workpiece is transported to the cleanroom glove wiping group in the manual dust removal area, at least two workers wear cleanroom gloves to wipe the surface of the workpiece to remove dust. Each worker changes to a new cleanroom glove after wiping 10-20 workpieces. Alcohol wiping: After wiping with clean gloves, the workpieces enter the alcohol wiping group. Workers, wearing clean gloves, use clean cloths soaked in alcohol to wipe the surface of the workpieces. Each worker changes to a new clean cloth after wiping 10-20 workpieces. S3: Brush dust removal: Movable brush dust removal: When the workpiece enters the movable brush group area of ​​the brush dust removal zone, the drive motor on the first support frame starts, driving the first brush to rotate and sweep the top of the workpiece to remove dust. Fixed brush dust removal: Next, the workpiece enters the fixed brush group area, and multiple second brushes on the second support frame sweep and brush the sides and top of the workpiece to remove dust. S4: Single workpiece electrostatic dust removal: When the workpiece enters the single workpiece electrostatic dust removal area, the ionization head at the end of the first cantilever on the third support frame ionizes the air to form ions under the action of the high voltage power supply. The air pump delivers high-pressure airflow to the airflow nozzle through the air pipe, blowing the ions to the workpiece surface, neutralizing the static electricity on the workpiece surface and carrying away the dust. S5: Flame dust removal. The workpiece enters the flame dust removal zone. The relative position between the flame nozzle and the workpiece is adjusted. The fuel pump delivers fuel to the flame nozzle through the delivery pipe. The flame nozzle sprays out flames and burns the dust off the surface of the workpiece through the smokeless flame. S6: Dust removal for material unloading and multiple workpieces: Unloading: The workpiece is conveyed to the unloading area, where workers remove it from the conveying mechanism and fix it on the hanger; Multi-workpiece conveying: When the hanger is full of workpieces, it is hung on the conveyor chain at the top of the air shower. The conveyor chain starts and drives the hanger to be conveyed into the air shower. Dust removal for multiple workpieces: After the hanger enters the air shower, the blower starts working and blows air into the air shower through the air shower nozzles. At the same time, the electrostatic generator's electrostatic emission rod ionizes the air blown out of the air shower to form ions. The ions are blown to the surface of the workpiece, neutralizing the static electricity on the workpiece and carrying away the dust.

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