Static coating equipment for LED panel lamp processing

By using components such as a conveyor table, guide plate, electrostatic spray gun, and airbag to form airflow in the spraying equipment, the problems of powder deposition on the inner wall of the spray gun and low spraying efficiency on the side of the chassis are solved, and the effective utilization and recycling of powder are realized.

CN116889937BActive Publication Date: 2026-01-27JIANGXI AOPU LIGHTING CO LTD
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Patent Information

Application Number
CN202310700652.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-14
Publication Date
2026-01-27
Estimated Expiration
2043-06-14

AI Technical Summary

Technical Problem

The spray gun deposits powder material on the inner wall of the spraying chamber, resulting in waste, and the LED panel light chassis is close to the side of the inner wall of the spraying chamber, resulting in low spraying efficiency.

Method used

It adopts a combination structure of conveyor table, guide plate, electrostatic spray gun, pressure airbag, fixed head, air pipe, fixed box, filter pipe and shaking ball. The airbag is compressed and stretched to form airflow, which prevents powder from adhering to the inner wall of the spraying chamber and adsorbs the side of the chassis. The powder is collected by airflow and vibration.

Benefits of technology

It reduces powder adhesion to the inner wall of the spray chamber, improves powder utilization and chassis side spraying efficiency, and ensures effective powder deposition and recovery.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of powder electrostatic spraying, and discloses electrostatic coating equipment for LED panel lamp processing, which comprises a conveying table, the top end of the conveying table is horizontally conveyed with a bottom disc through a conveying belt, the middle part of the top end of the conveying table is provided with a spraying chamber, the inner side of the spraying chamber is fixedly connected with guide plates through two side plates respectively, electrostatic spray guns are slidably connected between the two guide plates, and pressure air bags located at the front and back of the electrostatic spray guns are movably connected between the two guide plates. The electrostatic spray guns reciprocally move, the electrostatic spray guns compress and stretch the pressure air bags on the two sides during movement, when the pressure air bag on one side is compressed, the gas in the inner side of the pressure air bag is compressed to a certain pressure, the inner side gas is directly blown out through the fixed head, the charged powder in movement moves to the surface of the bottom disc and adheres, and the spraying efficiency of the bottom disc close to the inner wall side of the spraying chamber is ensured.
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Description

Technical Field

[0001] This application relates to the field of powder electrostatic spraying technology, and in particular to an electrostatic coating equipment for LED panel light processing. Background Technology

[0002] Electrostatic coating of LED panel lights is a process of spraying plastic powder material onto the chassis of LED panel lights using electrostatic drive. The electrostatic powder coating equipment mainly consists of a powder supply tank, a powder spray gun, and a controller. A high-voltage electrostatic field is formed between the spray gun or spray disc and the workpiece to be coated. Generally, the workpiece is grounded as the anode, and the spray gun nozzle is a negative high voltage. When the electric field strength is high enough, the air near the nozzle will generate corona discharge, causing the air to ionize. This causes the paint particles to become charged as they pass through the nozzle. When they pass through the corona discharge zone, they combine with the ionized air and become charged again. Under the action of the high-voltage electrostatic field, they move towards the workpiece with opposite polarity and deposit on the surface of the workpiece to form a uniform coating.

[0003] The spray gun moves horizontally and continuously within the spray chamber to spray the LED panel light chassis. This causes the powder sprayed from the spray gun to deposit on the inner wall of the spray chamber when it is close to the inner wall, making it difficult to collect and resulting in waste of sprayed material. Furthermore, the LED panel light chassis is a box-shaped structure without a top cover, meaning that the vertical part near the inner wall of the spray chamber is prone to powder deposition, reducing the amount that can be deposited and further reducing the efficiency of spraying the sides of the chassis. Summary of the Invention

[0004] This application proposes an electrostatic coating equipment for LED panel light processing, which has the advantages of reducing powder adhesion to the inner wall and effectively depositing powder on the side of the chassis, thereby solving the problems of powder adhesion to the inner wall and low spraying efficiency on the side of the chassis near the inner wall mentioned in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: an electrostatic coating equipment for LED panel light processing, comprising a conveyor table, the top of which is transversely conveyed to a chassis via a conveyor belt; a spray chamber is provided at the center of the top of the conveyor table; guide plates are fixedly connected to the inner side of the spray chamber via two horizontal plates; an electrostatic spray gun is slidably connected between the two guide plates; pressure airbags located on the front and back of the electrostatic spray gun are movably connected between the two guide plates; a fixed head is fixedly connected to the side of each pressure airbag near the inner wall of the spray chamber; the pressure air... The top of the bladder is connected to a vent pipe. The outer side of the vent pipe passes through the spray chamber and connects to a fixed box located above the spray chamber. The fixed box is fixedly connected to two connecting pipes on the same side as the two vent pipes. Each connecting pipe has a telescopic pipe fixedly connected to both sides of its middle section. The end of the telescopic pipe away from the connecting pipe is located on the outside of the electrostatic spray gun. The top of the conveyor belt at the top of the conveyor table is slidably connected to two irregularly shaped plates located inside the spray chamber. The inner side of the irregularly shaped plate is hollow and the top is open. The outer side of the connecting pipe passes through the conveyor table and is fixedly connected to the bottom end of the irregularly shaped plate.

[0006] Furthermore, the top ends of both venting tubes away from the pressure bladder are fixedly connected to filter tubes, and the two venting tubes are respectively connected to the bottom part of the fixed box closest to the side through the filter tubes. The inner side of the fixed box is divided into two chambers along the axial direction of the venting tubes, and the upper and lower ends of each chamber in the fixed box are respectively connected to the connecting tube (and venting tube) on the same side. The inner chamber of the fixed box is provided with a swaying bead.

[0007] Furthermore, the pressure airbag is a laterally expandable airbag, and the contact surfaces of the pressure airbags near the side of the electrostatic spray gun are fixedly connected, as are the contact surfaces of the pressure airbags near the inner wall of the spraying chamber.

[0008] Furthermore, the fixing head is a one-way air release head. When the pressure bladder is compressed to less than half its volume, the fixing head begins to release air outward.

[0009] Furthermore, the fixing box is in the shape of an inverted frustum, and the inner side of the fixing box and the connection port of the filter tube (13) are rounded.

[0010] Furthermore, the telescopic tube is a horizontal telescopic tube, and the connecting tubes connected to the telescopic tube are all located on the same side of the electrostatic spray gun.

[0011] Furthermore, the irregularly shaped plate is a horizontally arranged plate, and the top of the irregularly shaped plate near the spraying chamber is connected to an inclined plate with its side facing the chassis.

[0012] Furthermore, the inner side of the shaking bead is hollow, and the shaking bead is spherical. The shaking bead is made of synthetic fiber plastic.

[0013] The beneficial effect of this application is that the reciprocating electrostatic spray gun compresses and stretches the pressure airbags on both sides as it moves. When one side of the pressure airbag is compressed, the gas inside the pressure airbag is compressed to a certain pressure and then blown out directly through the fixed head. This causes the spray gun to gradually approach the inner wall of the spray chamber, forming a downward airflow surface. As the powder sprayed by the electrostatic spray gun approaches the inner wall of the spray chamber, it is blown and blocked by the airflow surface and moves downward, reducing the amount of powder adhering to the surface of the spray chamber. At the same time, the charged powder material passes the chassis and approaches the side of the inner wall of the spray chamber, causing the moving charged powder to move to the surface of the chassis and adhere, ensuring the spraying efficiency of the side of the inner wall of the spray chamber near the chassis.

[0014] As the electrostatic spray gun moves, the pressure bladder on one side is stretched, increasing the volume inside. This creates a negative pressure inside the fixed box connected to the vent pipe, drawing in gas from the inside of the spray chamber through the telescopic pipe and the shaped plate. As the electrostatic spray gun moves further away from the chassis and spray chamber, the gas drawn in through the shaped plate carries dispersed air and powder falling onto the top of the shaped plate. Simultaneously, the telescopic pipe draws in gas from the area away from the electrostatic spray gun, carrying dispersed powder within it. This airflow then enters the same area inside the fixed box through the connecting pipe, causing the airflow on the same side of the fixed box to flow from top to bottom. The gas is then continuously filtered through the filter pipe, resulting in... Clean gas is supplied to the inside of the pressure bladder through the vent pipe. When the electrostatic spray gun moves in the opposite direction, the pressure bladder on this side is compressed again by the movement of the electrostatic spray gun. This causes the airflow in the same area of ​​the fixed box to flow from bottom to top. The airflow blows the shaking beads and powder inside, causing the powder to be blown out from the ends of the telescopic tube and the shaped plate with the airflow. As the electrostatic spray gun moves, the powder blown out by the telescopic tube follows the powder sprayed by the electrostatic spray gun to the surface of the chassis, allowing the powder to be reused in time. The powder blown out by the shaped plate can pass directly through the side of the chassis near the spray chamber, allowing the powder to be collected and used in time, thus improving the powder utilization efficiency.

[0015] The fixed box is divided into left and right chambers. Due to the different states of the two pressure bladders, the airflow directions in the two chambers are different. By setting up a shaking bead, the shaking bead is blown in the chamber inside the fixed box where the airflow is from bottom to top. It is blown and bounces continuously inside the fixed box, generating vibration. This causes the fixed box to vibrate, and the filter tube inside the chamber where the airflow is filtering the gas from top to bottom is constantly shaken. As a result, the powder adhering to the surface of the filter tube is vibrated and moved to the outer side of the top of the filter tube. This allows the surface of the filter tube to continuously filter the gas, ensuring the effectiveness of the filter tube and the smoothness of the airflow. In turn, it continuously recovers the gas containing powder, ensuring the utilization rate of the powder. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0017] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0018] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of the inner side of the spray booth structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the inner side of the spray booth structure of the present invention;

[0021] Figure 4 This is a side view of the spray booth structure of the present invention.

[0022] Figure 5 This is a cross-sectional view of the inner side of the fixing box structure of the present invention.

[0023] In the diagram: 1. Conveyor table; 2. Chassis; 3. Spraying chamber; 4. Guide plate; 5. Electrostatic spray gun; 6. Pressure airbag; 7. Fixed head; 8. Vent pipe; 9. Fixed box; 10. Connecting pipe; 11. Telescopic pipe; 12. Irregular plate; 13. Filter pipe; 14. Shaking bead. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Example

[0025] Please see Figure 1 An electrostatic coating equipment for LED panel light processing includes a conveyor table 1, with a chassis 2 being transversely conveyed by a conveyor belt at the top of the conveyor table 1, and a spraying chamber 3 located at the center of the top of the conveyor table 1. (Reference) Figure 2 , Figure 3Inside the spray chamber 3, guide plates 4 are fixedly connected to the two horizontal plates on both sides. An electrostatic spray gun 5 is slidably connected between the two guide plates 4. The electrostatic spray gun 5 is driven by a motor to slide in a direction perpendicular to the conveyor table 1. The electrostatic spray gun 5 is connected to a pipe for supplying plastic powder. Pressure airbags 6 located on the front and back of the electrostatic spray gun 5 are movably connected between the two guide plates 4. Each pressure airbag 6 has a fixed head 7 fixedly connected to the side near the inner wall of the spray chamber 3. The top of the pressure airbag 6 is connected to a vent pipe 8. The outer side of the vent pipe 8 passes through the spray chamber 3 and is connected to a fixed box 9 located above the spray chamber 3. The fixed box 9 and the two vent pipes 8 are respectively fixedly connected to two connecting pipes 10 on the same side. Each connecting pipe 10 has a telescopic pipe 11 fixedly connected to both sides of its middle section. The end of the telescopic pipe 11 away from the connecting pipe 10 is located on the outer side of the electrostatic spray gun 5. (Reference) Figure 4 The top of the conveyor belt of the conveyor table 1 is slidably connected to the two sides of the spray chamber 3. The shaped plate 12 is located on both sides inside the spray chamber 3 and is slidably sealed with the outside of the conveyor belt at the top of the conveyor table 1. The inside of the shaped plate 12 is hollow and the top is open. The outside of the connecting pipe 10 passes through the conveyor table 1 and is fixedly connected to the bottom of the shaped plate 12. When the pressure airbag 6 is compressed during the movement of the electrostatic spray gun 5, the compression amount of the pressure airbag 6 will be greater than the amount of gas passing through the telescopic pipe 11 and the shaped plate 12, thereby causing the air pressure inside the pressure airbag 6 to increase continuously until the pressure increases to the point that gas is blown out through the fixed head 7, so that the blown gas works together. Example

[0026] Example 2 is based on Example 1. Please refer to Example 1. Figure 4 Both vent pipes 8 are fixedly connected to filter pipes 13 at their top ends away from the pressure bladder 6, and both vent pipes 8 are connected to the bottom part of the fixed box 9 closest to the side through the filter pipes 13. (Refer to...) Figure 5 The inner side of the fixed box 9 is divided into two chambers along the axial direction of the vent pipe 8. The upper and lower ends of each chamber in the fixed box 9 are connected to the connecting pipe 10 and the vent pipe 8 on the same side, respectively. That is, the top of the outer side of the fixed box 9 is connected to the connecting pipe 10, and the bottom of the fixed box 9 is connected to the vent pipe 8. The inner chamber of the fixed box 9 is provided with a shaking bead 14.

[0027] Please see Figure 3The pressure airbag 6 is a laterally expandable airbag. The contact surfaces of the pressure airbags 6 near the side of the electrostatic spray gun 5 are fixedly connected, and the contact surfaces of the pressure airbags 6 near the inner wall of the spray chamber 3 are also fixedly connected. Through the pressure airbags 6 located on both sides of the electrostatic spray gun 5, as the electrostatic spray gun 5 moves, it pushes one side of the pressure airbag 6 to contract and pulls the other side of the pressure airbag 6 to extend, causing the gas inside the two pressure airbags 6 to exit and enter respectively, allowing the electrostatic spray gun 5 to gradually move closer to one side. After the pressure airbag 6 on the inner wall of the spray chamber 3 is compressed, the surface of the spray chamber 3 on this side is blown by the fixed head 7 to form an airflow surface parallel to the inner wall of the spray chamber 3. When the electrostatic spray gun 5 gradually approaches and carries the powder close to the inner wall of the spray chamber 3, the powder is blocked by the airflow blown out by the fixed head 7, and the powder at the outermost edge is blown and carried to the side of the chassis 2 and the spray chamber 3. When this part of the powder passes the side of the chassis 2, it is attracted and adsorbed by the chassis 2, reducing the adhesion on the surface of the spray chamber 3 and the utilization rate of the powder.

[0028] Please see Figure 2 The fixed head 7 is a one-way air-discharge pressure relief head. When the pressure bladder 6 is compressed to less than half its volume, the fixed head 7 begins to release air outward. At this time, the amount of gas compressed by the pressure bladder 6 is the amount of gas inside the pressure bladder 6 minus the amount of gas passing through the telescopic tube 11 and the irregular plate 12. That is, the air pressure of the remaining gas inside the pressure bladder 6 acts on the gas blown out by the fixed head 7, so that the gas blown out by the fixed head 7 has a certain pressure, thereby enhancing the gas intensity of the airflow surface blown out by the fixed head 7. This enhances the effect of the airflow surface blown out by the fixed head 7 in hindering the adhesion of powder materials to the spray chamber 3, thereby further reducing powder adhesion and reducing the difficulty of powder collection.

[0029] Please see Figure 1 , Figure 4The fixed box 9 is shaped like an inverted frustum, and the area around the connection between the inner side of the fixed box 9 and the filter tube 13 is rounded. This means that after the powder material enters the inner side of the fixed box 9, it will move directly to the top surface of the filter tube 13 due to its own gravity. This allows the airflow inside the fixed box 9 to create a chaotic flow of powder material within the cavity, ensuring uniform powder material distribution in the gas blown out by the shaped plate 12 and the telescopic tube 11. Simultaneously, the shaking bead 14 is located inside the fixed box 9. The rounded corners of the inner side of the fixed box 9 ensure that the shaking bead 14 always tends to be located at the bottom of the inner side of the fixed box 9, i.e., the top of the filter tube 13, allowing the gas to directly... The shaking bead 14 at the top of the filter tube 13 is blown upward, causing it to impact and bounce inside the fixed box 9, thus generating vibration. This causes the powder on the surface of the filter tube 13 to be directly pushed and vibrated during the movement and rebound of the shaking bead 14 in the same chamber. When airflow passes through the inner cavity of the fixed box 9, the powder material attached to the surface of the filter tube 13 is directly knocked off by the shaking bead 14, improving the utilization rate of the recovered powder and ensuring the effectiveness of the subsequent function of the filter tube 13. When filtering at the top of the filter tube 13, the filter tube 13 can shake itself due to the vibration transmitted by the fixed box 9, reducing the impact of the powder attached to the surface on the filtered airflow.

[0030] Please see Figure 3 , Figure 4 The telescopic tube 11 is a horizontal telescopic tube, and the connecting tube 10 connected to the telescopic tube 11 is located on the same side of the electrostatic spray gun 5. Since each telescopic tube 11 is located on one side of the electrostatic spray gun 5, the pressure airbag 6 compressed by the electrostatic spray gun 5 in the moving direction can cause the material collected inside the fixed box 9 blown out by the pressure airbag 6 through the telescopic tube 11 to be directly driven to flow by the blown material. This part of the material is directly adsorbed to the surface of the chassis 2 by the electric field, so that the powder can be directly recycled after being collected, which improves the efficiency of rapid utilization of powder after recycling, avoids changes in the properties of powder materials, and improves the effect of powder.

[0031] Please see Figure 4 The irregular plate 12 is a horizontally arranged plate, and the top of the irregular plate 12 is connected to the side of the spray chamber 3 with the side facing the chassis 2. The air outlets of the irregular plate 12 and the fixing head 7 are both strip-shaped square holes, so that the gas blown out by the fixing head 7 forms an airflow surface. This causes the powder material sprayed by the electrostatic spray gun 5 to be blown by the gas blown out by the fixing head 7 before it comes into contact with the spray chamber 3. The gas blown out by the irregular plate 12 contains powder, so the airflow surface carries the powder to the side of the chassis 2 near the spray chamber 3, so that the powder moves and is adsorbed on the surface of the chassis 2 again, improving the utilization rate of the powder.

[0032] Please see Figure 5The inner side of the shaking bead 14 is hollow and spherical. The shaking bead 14 is made of synthetic fiber plastic, i.e., nitrocellulose, which is easy to impact. The fixed box 9 is made of rigid material. After the shaking bead 14 is blown by the airflow, it bounces and vibrates inside the fixed box 9. The powder attached to the inner wall of the fixed box 9 will be moved away from the inner wall of the fixed box 9 due to the vibration, so that the amount of powder left inside the fixed box 9 is minimized. At the same time, when the airflow in the inner cavity of the fixed box 9 is from bottom to top, the vibration and rebound of the shaking bead 14 inside will impact and move the powder material collected by the filter tube 13 and stir it evenly. This makes the powder material blown out by the telescopic tube 11 and the shaped plate 12 more uniform, improves the efficiency of subsequent use, and makes the powder material attached to the surface of the chassis 2 more uniform.

[0033] The method of using (working principle) of this invention is as follows:

[0034] In the process of electrostatically spraying plastic powder onto the surface of chassis 2, chassis 2 is first conveyed to the inside of spray chamber 3 by the conveyor belt at the top of conveyor table 1. When chassis 2 is fully inside and the first side reaches below electrostatic spray gun 5, electrostatic spray gun 5 is driven to slide back and forth on the inside of guide plate 4, continuously spraying plastic powder. As electrostatic spray gun 5 compresses pressure airbag 6 to one side and gradually approaches the inner wall of spray chamber 3, the powder sprayed by electrostatic spray gun 5 will be sprayed onto the surface of chassis 2 in a funnel shape. The compression of pressure airbag 6 increases the internal air pressure, causing air pipe 8 to blow gas into the inside of fixed box 9. The airflow flows from the bottom to the top of fixed box 9, causing the inside of fixed box 9 to... The wobbling bead 14 is pushed by the airflow and continuously impacts the inner wall of the fixed box 9, then bounces again, causing the fixed box 9 to vibrate as a whole. Simultaneously, the airflow passes through the connecting pipe 10 and the telescopic pipe 11, exiting from the ends of the telescopic pipe 11 and the irregular plate 12. Until the electrostatic spray gun 5 moves to half the length of the pressure airbag 6, the gas pressure inside the pressure airbag 6 increases to a level that allows it to be blown out through the fixed head 7. At this point, the funnel-shaped area formed by the powder material sprayed from the electrostatic spray gun 5 gradually approaches the inner wall of the spray chamber 3, allowing the gas blown out by the fixed head 7 to form a downward airflow surface on the inner wall surface of the spray chamber 3. This obstructs and blows the powder material downwards, causing the charged powder following the airflow to move... The electrostatic spray gun 5 moves past the side of the chassis 2 near the spray chamber 3, causing the charged powder particles to be acted upon again by the chassis 2, moving towards and adhering to the outer side of the chassis 2. Simultaneously, the gas blown out by the shaped plate 12 forms an upward airflow, causing the powder particles to move upwards again past the side of the chassis 2 near the spray chamber 3, moving the charged powder particles outwards again. This ensures that the side of the chassis 2 near the spray chamber 3 is effectively powder coated. Meanwhile, the movement of the electrostatic spray gun 5 moves away from the inner wall of the other spray chamber 3, causing the pressure bladder 6 connected to the other side to inflate. This pressure bladder 6 then draws in powder particles that have not adhered to the surface of the chassis 2 between the chassis 2 and the spray chamber 3 through the bottom end of the connecting pipe 10. The material is drawn in through the telescopic tube 11, and the material dispersed inside the spray chamber 3 by the electrostatic spray gun 5 during its movement. The gas drawn into the connecting tube 10 flows from the top of the fixed box 9 to the bottom of the fixed box 9. After the powder material in the gas is filtered by the filter tube 13, it enters the inside of the pressure airbag 6 through the vent tube 8. The vibration of the fixed box 9 as a whole is caused by the airflow from one side to the other side of the fixed box 9, where the airflow is from top to bottom. The powder adhering to the top surface after being filtered by the filter tube 13 is shaken by the vibration generated on the other side, thus avoiding clogging the filter holes of the filter tube 13 and ensuring the filtration efficiency of the filter tube 13.

Claims

1. An electrostatic coating equipment for LED panel light processing, comprising a conveyor table (1), wherein the top of the conveyor table (1) is transversely conveyed to a chassis (2) via a conveyor belt, and a spraying chamber (3) is provided in the middle of the top of the conveyor table (1), characterized in that, The inner side of the spray chamber (3) is fixedly connected to guide plates (4) via two horizontal plates. An electrostatic spray gun (5) is slidably connected between the two guide plates (4). Pressure airbags (6) located on the front and back of the electrostatic spray gun (5) are movably connected between the two guide plates (4). Each pressure airbag (6) is fixedly connected to a fixing head (7) on the side near the inner wall of the spray chamber (3). The top of the pressure airbag (6) is connected to a vent pipe (8). The outer side of the vent pipe (8) passes through the spray chamber (3) and is connected to a fixing box (9) located above the spray chamber (3). The box (9) and the two ventilation pipes (8) are respectively fixedly connected to two connecting pipes (10) on the same side. Each connecting pipe (10) has a telescopic pipe (11) fixedly connected to both sides of the middle part. The end of the telescopic pipe (11) away from the connecting pipe (10) is located outside the electrostatic spray gun (5). The top conveyor belt of the conveyor table (1) is slidably connected to the two sides of the conveyor belt, which is located inside the spraying chamber (3). The inner side of the shaped plate (12) is hollow and the top is open. The outer side of the connecting pipe (10) passes through the conveyor table (1) and is fixedly connected to the bottom end of the shaped plate (12). The top ends of the two ventilation tubes (8) away from the pressure bladder (6) are fixedly connected to filter tubes (13), and the two ventilation tubes (8) are respectively connected to the bottom end of the fixed box (9) through the filter tubes (13). The inner side of the fixed box (9) is divided into two chambers along the axial direction of the ventilation tubes (8), and the upper and lower ends of each chamber in the fixed box (9) are respectively connected to the connecting tube (10) and the ventilation tube (8) on the same side. The inner chamber of the fixed box (9) is provided with a swaying bead (14).

2. The electrostatic coating equipment for LED panel light processing according to claim 1, characterized in that, The pressure airbag (6) is a laterally expandable airbag. The pressure airbag (6) is fixedly connected to the side of the electrostatic spray gun (5), and the pressure airbag (6) is fixedly connected to the inner wall of the spray chamber (3).

3. The electrostatic coating equipment for LED panel light processing according to claim 1, characterized in that, The fixed head (7) is a one-way air release head. When the pressure bag (6) is compressed to less than half of its volume, the fixed head (7) begins to release air to the outside.

4. The electrostatic coating equipment for LED panel light processing according to claim 1, characterized in that, The fixing box (9) is in the shape of an inverted frustum, and the inside of the fixing box (9) and the connection port of the filter tube (13) are all rounded.

5. The electrostatic coating equipment for LED panel light processing according to claim 1, characterized in that, The telescopic tube (11) is a horizontal telescopic tube, and the connecting tube (10) connected to the telescopic tube (11) is located on the same side of the electrostatic spray gun (5).

6. The electrostatic coating equipment for LED panel light processing according to claim 1, characterized in that, The irregular plate (12) is a horizontally arranged plate, and the top of the irregular plate (12) is connected to the side of the spraying chamber (3) with the side facing the chassis (2).

7. The electrostatic coating equipment for LED panel light processing according to claim 2, characterized in that, The inner side of the wobbling bead (14) is hollow, and the wobbling bead (14) is spherical.

Citation Information

Patent Citations

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    CN111729766A

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