Uniform plastic spraying device with recycling function

Abstract

This invention provides a uniform powder coating device with a recycling function, relating to the field of powder coating equipment technology. It includes: a powder coating processing chamber, with a collection tray fixedly installed at the bottom of the chamber, the collection tray having a bucket-shaped structure; a discharge channel fixedly installed at the bottom center and rear end of the powder coating processing chamber, the rear end of the discharge channel extending beyond the chamber, and a discharge port opened below the rear end of the discharge channel; the bottom of the collection tray communicating with the top of the discharge channel; and a rotating material shaft rotatably installed at the lower rear side of the powder coating processing chamber. This device, through the coordinated operation of the bucket-shaped collection tray, discharge channel, screw propeller, and rotating material wheel, combined with the diversion structure of the separating guide channel, achieves automated collection, conveying, lifting, and diversion of scattered powder coating during the powder coating process. The entire process requires no manual intervention, significantly improving powder recycling rate and cycle efficiency, and solving the problems of inefficient manual recycling and serious powder waste in traditional devices.

Description

Technical Field

[0001] This invention relates to the field of powder coating equipment technology, and in particular to a uniform powder coating device with a recycling function. Background Technology

[0002] Powder coating equipment is a complete set of industrial equipment that uses electrostatic adsorption to evenly coat the surface of metal workpieces with powder coating, and then cures it at high temperature to form a protective and decorative coating. It is mainly used for corrosion prevention, rust prevention and appearance beautification of metal parts. The whole process has no solvent emissions, is environmentally friendly, and the coating has good adhesion, wear resistance and durability. The powder can be recycled and reused.

[0003] The currently used powder coating equipment only provides an air suction effect. It generates airflow by suction to guide the flow direction of falling particles during powder coating, ensuring that the particles remain in the equipment for subsequent manual recycling and reuse. However, the recycling efficiency is low and it lacks a stable, convenient and fast recycling cycle capability. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a uniform powder coating device with recycling function.

[0005] This invention provides a uniform powder coating device with a recycling function, specifically comprising: a powder coating processing chamber, wherein a collection tray is fixedly installed at the lower part of the powder coating processing chamber, the collection tray having a bucket-shaped structure; a material discharge channel is fixedly installed at the middle and rear of the bottom of the powder coating processing chamber, the rear end of the material discharge channel extending beyond the powder coating processing chamber, and a discharge port is opened below the rear end of the material discharge channel; the bottom of the collection tray is connected to the top of the material discharge channel; a rotating shaft is rotatably installed at the lower rear side of the powder coating processing chamber, and a rotating wheel is fixedly installed at the rear end of the rotating shaft, with equidistantly fixed components arranged around the rotating wheel. It has a lifting plate, which is inclined; a screw propeller is rotated in the feeding channel, and a return motor for driving the screw propeller is fixed at the front end of the feeding channel; the screw propeller is connected to the rear end of the rotating shaft by a synchronous belt drive; the rotating wheel surrounds the discharge port below the rear end of the feeding channel; two sets of filling pools are set below the rear side of the powder coating treatment chamber; a separation guide channel is fixedly set in the lower middle rear side of the powder coating treatment chamber. The separation guide channel is a double channel with two sides symmetrical. The upper rear part of the separation guide channel is the highest, and the two sides of the separation guide channel slope downward.

[0006] Optionally, the powder coating chamber has through slots on both sides and two pairs of rotating doors at the front end; a partition is provided above the powder coating chamber, and a centralized exhaust is fixedly installed inside the partition; a U-shaped frame is fixedly installed above the interior of the powder coating chamber, with two pairs of chains passing through the U-shaped frame, and suspension frames are fixedly installed at equal intervals outside the chains; a linkage shaft is rotatably installed in the upper partition of the powder coating chamber, and a drive motor is fixedly installed above one side of the powder coating chamber, with the drive motor being connected to the linkage shaft; six sets of transmission shafts are rotatably installed in the upper partition of the powder coating chamber, and the transmission shafts are connected to the linkage shaft by bevel gear transmission.

[0007] Optionally, the bottom of the centralized air outlet is fixedly provided with six sets of positioning shaft tubes, and a top rotating seat is rotatably provided on the outside of each positioning shaft tube via bearings. A corrugated filter cover is fixedly provided at the lower end of each top rotating seat, and the bottom end of the positioning shaft tube is located in the middle of the corrugated filter cover. A bevel gear is integrally provided on the outside of the top rotating seat, and a bevel gear is provided at the front end of the drive shaft to mesh with the bevel gear on the outside of the top rotating seat.

[0008] Optionally, an air control device is fixedly installed above one side of the powder coating chamber, and one side of the centralized air outlet is connected to the air control device; three sets of motor-driven fans are rotatably installed on the outside and below the air control device.

[0009] Optionally, the bottom of each packing pool is a bucket-shaped structure, and a feeder is connected to the bottom of each packing pool. Each feeder has a rotating feeding wheel inside, and six sets of V-shaped grooves are opened on the outside of the feeding wheel.

[0010] Optionally, each of the packing tanks has an eccentric pipe fixedly installed at its rear end, and a driven impeller is rotatably installed inside each eccentric pipe. The shaft of the driven impeller is fixedly connected to the shaft of the feeding wheel. One side of the eccentric pipe is connected to a pipe that connects to the lower rear side of the feeder. A branch pipe is installed at the lower front side of the feeder, which is connected to an electronic gate valve and a tubular spray gun. The other end of the eccentric pipe is also connected to an electronic gate valve. The rear ends of the two sets of electronic gate valves on the same side are connected to an air inlet pipe through a tee, and the air inlet pipe is connected to an air compressor.

[0011] Optionally, each of the intake pipes is fixedly equipped with a miniature electric cylinder, and each miniature electric cylinder is fixedly equipped with a sliding valve core at its telescopic end. The sliding valve core is inserted into the electronic gate valve. Each of the electronic gate valves is equipped with a pressure sensor at its front outlet.

[0012] Optionally, a control button is provided at the handle of the tubular powder coating gun; an insulating tail frame is fixedly provided at the tail of the tubular powder coating gun, an outer cover is fixedly provided outside the insulating tail frame, and four sets of friction blocks are fixedly provided inside the outer cover, with the friction blocks passing through the insulating tail frame.

[0013] Optionally, the tubular spray gun has an electrostatic discharge seat rotatably mounted inside via a bearing. An insulating sleeve is also fixed between the electrostatic discharge seat and the bearing. An electrostatic needle is fixedly mounted around one side of the electrostatic discharge seat, and the other side of the electrostatic discharge seat is a rotating shaft structure. A friction roller is fixedly mounted outside the rotating shaft structure, and a friction block is attached to the friction roller. A micro motor is fixedly mounted outside the outer cover, and the micro motor is connected to the rotating shaft structure of the electrostatic discharge seat for transmission.

[0014] The beneficial effects are as follows:

[0015] This device, through the coordinated operation of a bucket-shaped collection tray, a feeding channel, a screw propeller, and a transfer wheel, combined with a diversion structure of a separation guide channel, achieves automated collection, conveying, lifting, and diversion of scattered powder coatings during the powder coating process. The entire process requires no manual intervention, significantly improving powder recycling rate and cycle efficiency, and solving the problems of inefficient manual recycling and serious powder waste in traditional devices.

[0016] It adopts a rotatable corrugated filter cover with a bevel gear linkage transmission structure and bidirectional airflow control of the air control device. It can not only intercept suspended powder in all directions during powder coating and prevent powder escape and local blockage of the filter cover, but also blow off and recycle the powder attached to the filter cover through reverse airflow. It integrates airflow guidance, powder interception and self-cleaning functions to ensure stable airflow and a clean powder coating environment in the powder coating chamber.

[0017] The tubular powder coating gun integrates triboelectric charging, rotary electrostatic conduction, and adjustable feeding structure. It generates electricity through friction between the friction roller and friction block, and uniformly charges the rotating electrostatic needle. With the linkage control of the air pressure sensor and electronic gate valve, it can achieve precise control of powder output and electrostatic effect, ensuring uniform charging of powder coating and spray atomization effect, and improving the uniformity of powder coating and coating adhesion of workpiece surface. Attached Figure Description

[0018] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the rear structure of an embodiment of the present invention is shown;

[0020] Figure 3 A schematic diagram of the bottom structure of an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram of the internal structure of an embodiment of the present invention is shown;

[0022] Figure 5 A disassembled anatomical view of an embodiment of the present invention is shown;

[0023] Figure 6 A schematic diagram of the assembly structure of the corrugated filter cover according to an embodiment of the present invention is shown;

[0024] Figure 7 A schematic diagram of the connection structure of the feeder in an embodiment of the present invention is shown;

[0025] Figure 8 A cross-sectional view of the tubular powder coating gun according to an embodiment of the present invention is shown;

[0026] Figure 9 An embodiment of the present invention is shown. Figure 8 A magnified schematic diagram of the structure at point A.

[0027] List of reference numerals in the attached diagram:

[0028] 1. Powder coating treatment chamber; 101. Through slot; 102. Rotating door; 103. Collection tray; 104. Linkage shaft; 105. Drive motor; 106. Transmission shaft; 107. U-shaped frame; 2. Discharge channel; 201. Screw propeller; 202. Return motor; 3. Transfer shaft; 301. Transfer wheel; 302. Lifting plate; 4. Separation guide channel; 5. Centralized air exhaust; 501. Positioning shaft tube; 502. Top rotating seat; 503. Corrugated filter cover; 6. Air control 7. Packing tank; 701. Feeder; 702. Feeding wheel; 8. Eccentric pipe; 801. Driven impeller; 9. Electronic gate valve; 901. Air inlet pipe; 902. Miniature electric cylinder; 903. Sliding valve core; 10. Air pressure sensor; 11. Tubular spray gun; 1101. Insulated tailstock; 1102. Outer cover; 1103. Friction block; 12. Static electricity conduction seat; 1201. Insulating sleeve; 1202. Static electricity needle; 1203. Friction roller; 13. Miniature motor. Detailed Implementation

[0029] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0030] Example 1: Please refer to the accompanying drawings in the instruction manual. Figures 1 to 9 As shown:

[0031] This invention proposes a uniform powder coating device with a recycling function, comprising: a powder coating processing chamber 1, a collection tray 103 fixedly disposed inside the lower part of the powder coating processing chamber 1, the collection tray 103 having a bucket-shaped structure; a discharge channel 2 fixedly disposed at the middle and rear end of the bottom of the powder coating processing chamber 1, the rear end of the discharge channel 2 extending beyond the powder coating processing chamber 1, and a discharge port opened below the rear end of the discharge channel 2; the bottom of the collection tray 103 communicating with the top of the discharge channel 2; a rotating shaft 3 rotatably disposed at the lower rear side of the powder coating processing chamber 1, a rotating wheel 301 fixedly disposed at the rear end of the rotating shaft 3, and lifting plates 3 fixedly disposed at equal intervals around the rotating wheel 301. 02. The lifting plate 302 is inclined; a screw propeller 201 is rotatably installed in the feeding channel 2, and a return motor 202 for driving the screw propeller 201 is fixedly installed at the front end of the feeding channel 2; the screw propeller 201 is connected to the rear end of the rotating shaft 3 by a synchronous belt drive; the rotating wheel 301 surrounds the discharge port below the rear end of the feeding channel 2; two sets of filling pools 7 are installed below the rear side of the powder coating treatment chamber 1; a separation guide channel 4 is fixedly installed in the middle and lower rear side of the powder coating treatment chamber 1. The separation guide channel 4 is a double channel with symmetrical sides. The rear upper part of the separation guide channel 4 is the highest, and the sides of the separation guide channel 4 are inclined downward.

[0032] The powder coating chamber 1 has through slots 101 on both sides and two pairs of rotating doors 102 at its front end. A partition is located above the powder coating chamber 1, and a centralized exhaust 5 is fixedly installed within the partition. A U-shaped frame 107 is fixedly installed above the interior of the powder coating chamber 1, with two pairs of chains threaded through it and suspension brackets fixed at equal intervals outside the chains. A linkage shaft 104 is rotatably installed in the upper partition of the powder coating chamber 1, and a drive motor 105 is fixedly installed above one side of the powder coating chamber 1, with the drive motor 105 connected to the linkage shaft 104. Six sets of drive shafts 106 are rotatably installed in the upper partition of the powder coating chamber 1, and the drive shafts 106 are connected to the linkage shaft 104 via bevel gear transmission.

[0033] Among them, six sets of positioning shaft tubes 501 are fixedly installed at the bottom of the centralized air outlet 5. The top rotating seat 502 is rotatably installed on the outside of each positioning shaft tube 501 through bearings. A corrugated filter cover 503 is fixedly installed at the lower end of each top rotating seat 502. The bottom end of the positioning shaft tube 501 is located in the middle of the corrugated filter cover 503. A bevel gear is integrally installed on the outside of the top rotating seat 502. A bevel gear is installed at the front end of the drive shaft 106 and meshes with the bevel gear on the outside of the top rotating seat 502.

[0034] Among them, an air control device 6 is fixedly installed on one side of the powder coating treatment chamber 1, and one side of the centralized air outlet 5 is connected to the air control device 6; three sets of motor-driven fans are rotatably installed on the outside and below of the air control device 6.

[0035] The bottom of each of the filling pools 7 is a bucket-shaped structure, and each of the filling pools 7 is connected to a feeder 701. Each feeder 701 has a feeding wheel 702 rotatably installed inside, and the feeding wheel 702 has six sets of V-shaped grooves on its outside.

[0036] The rear end of the filling tank 7 is fixedly equipped with an eccentric pipe 8, and a driven impeller 801 is rotatably installed inside the eccentric pipe 8. The shaft of the driven impeller 801 is fixedly connected to the shaft of the feeding wheel 702. One side of the eccentric pipe 8 is connected to the lower rear side of the feeder 701. The lower front side of the feeder 701 is equipped with a branch pipe connected to an electronic gate valve 9 and a tubular spray gun 11. The other end of the eccentric pipe 8 is also connected to an electronic gate valve 9. The rear ends of the two sets of electronic gate valves 9 on the same side are connected to an air inlet pipe 901 through a tee. The air inlet pipe 901 is connected to an air compressor.

[0037] Among them, a miniature electric cylinder 902 is fixedly installed on the outside of the air intake pipe 901, and a sliding valve core 903 is fixedly installed on the telescopic end of the miniature electric cylinder 902. The sliding valve core 903 is inserted into the electronic gate valve 9; a pressure sensor 10 is installed at the front outlet of the electronic gate valve 9.

[0038] The tubular spray gun 11 has a control button at the handle; an insulating tail frame 1101 is fixedly installed at the tail of the tubular spray gun 11, an outer cover 1102 is fixedly installed outside the insulating tail frame 1101, and four sets of friction blocks 1103 are fixedly installed inside the outer cover 1102, with the friction blocks 1103 passing through the insulating tail frame 1101.

[0039] Example 2: Based on Example 1, an electrostatic conductive seat 12 is rotatably mounted inside the tubular spray gun 11 via a bearing. An insulating sleeve 1201 is also fixed between the electrostatic conductive seat 12 and the bearing. An electrostatic needle 1202 is fixedly mounted around one side of the electrostatic conductive seat 12, and the other side of the electrostatic conductive seat 12 is a rotating shaft structure. A friction roller 1203 is fixedly mounted outside the rotating shaft structure, and a friction block 1103 is attached to the friction roller 1203. A micro motor 13 is fixedly mounted outside the outer cover 1102, and the micro motor 13 is connected to the rotating shaft structure of the electrostatic conductive seat 12 for transmission.

[0040] The materials of friction block 1103 and friction roller 1203 can be selected as needed, as long as they can generate static electricity through friction.

[0041] The type and quantity of tubular powder coating guns 11 can be adjusted as needed. Simply connect the raw material inlet to the bottom of the filler tank 7 and it is ready to use.

[0042] Example 3: Based on Example 1, the transfer wheel 301 can be set as needed. If the transfer wheel 301 is not needed, a tray can be placed directly at the bottom of the discharge port at the rear of the feeding channel 2 to recycle plastic granules. The plastic granules fall onto the collection tray 103 and drop into the feeding channel 2. Starting the return motor 202 drives the screw propeller 201 to rotate and push the material backward. The plastic granules fall directly into the tray, completing the recycling. The plastic granules can then be manually poured back into the filling pool 7 for reuse.

[0043] The specific usage and function of this embodiment: In this invention, the powder coating device is part of the production line. The workpiece is suspended and transported by the suspension frame inside the U-shaped frame 107 and outside the chain. The workpiece passes through the through slot 101 to enter and exit the powder coating treatment chamber 1.

[0044] Plastic granules are poured into the filling tank 7. Compressed air is supplied to the air inlet pipe 901 by an air compressor. The extension of the micro electric cylinder 902 drives the movement of the sliding valve core 903, which can adjust the opening and closing of the electronic gate valve 9 and its opening range. The compressed air passes through the upper electronic gate valve 9 and enters the eccentric pipe 8, which drives the driven impeller 801 and its shaft to rotate. The shaft of the driven impeller 801 drives the feeding wheel 702 and its shaft to rotate. The feeding wheel 702 conveys plastic granules from top to bottom, continuously conveying the plastic granules downwards. At the same time, the compressed air also passes under the feeder 701, blowing the plastic granules out and conveying them to the tubular spray gun 11. The air pressure sensor 10 can monitor the air pressure for easy adjustment. Opening the lower electronic gate valve 9 can adjust the feeding efficiency. The larger the opening range of the lower electronic gate valve 9, the lower the conveying speed of the granules, thereby realizing the control of the feeding speed.

[0045] Plastic granules are ejected from the tubular spray gun 11, and the tubular spray gun 11 can be held by hand to spray the material.

[0046] The micro motor 13 is started to drive the electrostatic conduction seat 12 to rotate, the electrostatic conduction seat 12 drives the electrostatic needle 1202 to rotate, the friction roller 1203 and the friction block 1103 rub against each other to generate static electricity, the electrostatic needle 1202 and the friction roller 1203 are energized, and the electrostatic needle 1202 can be used to stir the plastic particles to apply static electricity, thereby causing the plastic particles to adhere to the surface of the workpiece.

[0047] During this process, the fan in the air control device 6 is activated to draw air and generate airflow, which ensures the flow direction of the plastic particles. The corrugated filter cover 503 can intercept the plastic particles. The drive motor 105 is activated to drive the linkage shaft 104 to rotate. The linkage shaft 104 drives the transmission shaft 106 to rotate through the bevel gear. The transmission shaft 106 drives the top rotating seat 502 and the corrugated filter cover 503 to rotate, providing an interception function during powder coating. Continuous rotation can ensure that more surfaces are intercepted to avoid blockage. Subsequently, the fan in the air control device 6 is controlled to rotate in the opposite direction to blow off the particles outside the corrugated filter cover 503.

[0048] Plastic granules fall onto the collection tray 103 and into the discharge channel 2. The return motor 202 is started, which drives the screw propeller 201 to rotate and push the granules backward. The plastic granules eventually fall into the transfer wheel 301. The screw propeller 201 drives the transfer shaft 3 to rotate via a synchronous belt. The transfer wheel 301 rotates synchronously and uses the lifting plate 302 to move the plastic granules upward. The plastic granules fall into the separation guide channel 4 and flow to the filler pools 7 on both sides, completing the return flow.

[0049] After powder coating, the plastic particles are electrostatically adsorbed onto the outside of the workpiece and then transported to the next process for heating and curing.

Claims

1. A uniform powder coating device with a recycling function, characterized in that, include: A powder coating treatment chamber (1) is provided with a collection tray (103) fixedly installed at the bottom inside the powder coating treatment chamber (1). The collection tray (103) has a bucket-shaped structure. A material discharge channel (2) is fixedly installed at the middle and rear of the bottom of the powder coating treatment chamber (1). The rear end of the material discharge channel (2) extends beyond the powder coating treatment chamber (1). An outlet is opened at the lower rear end of the material discharge channel (2). The bottom of the collection tray (103) is connected to the top of the material discharge channel (2). A rotating shaft (3) is rotatably installed at the lower rear side of the powder coating treatment chamber (1). A rotating wheel (301) is fixedly installed at the rear end of the rotating shaft (3). A lifting plate (302) is fixedly installed equidistantly around the rotating wheel (301). The lifting plate (302) is in the shape of a... Inclined setting; a spiral propeller (201) is rotated inside the feeding channel (2), and a return motor (202) for driving the spiral propeller (201) is fixedly set at the front end of the feeding channel (2); the spiral propeller (201) is connected to the rear end of the rotating shaft (3) by a synchronous belt drive; the rotating wheel (301) surrounds the discharge port below the rear end of the feeding channel (2); two sets of filling pools (7) are set below the rear side of the powder coating treatment chamber (1); a separation guide channel (4) is fixedly set in the middle and lower rear side of the powder coating treatment chamber (1). The separation guide channel (4) is a double channel with symmetrical sides. The rear upper part of the separation guide channel (4) is the highest, and the sides of the separation guide channel (4) are inclined downward.

2. The uniform powder coating device with recycling function as described in claim 1, characterized in that, The powder coating chamber (1) has through slots (101) on both sides and two pairs of rotating doors (102) at the front end. A partition is provided above the powder coating chamber (1), and a centralized exhaust (5) is fixedly installed inside the partition. A U-shaped frame (107) is fixedly installed above the interior of the powder coating chamber (1), and two pairs of chains are threaded through the U-shaped frame (107). Suspension frames are fixedly installed at equal intervals outside the chains. A linkage shaft (104) is rotatably installed in the upper partition of the powder coating chamber (1), and a drive motor (105) is fixedly installed above one side of the powder coating chamber (1). The drive motor (105) is connected to the linkage shaft (104) through a transmission. Six sets of transmission shafts (106) are rotatably installed in the upper partition of the powder coating chamber (1). The transmission shafts (106) are connected to the linkage shafts (104) through a bevel gear transmission.

3. The uniform powder coating device with recycling function as described in claim 2, characterized in that, The bottom of the centralized air outlet (5) is fixedly provided with six sets of positioning shaft tubes (501). The outside of each positioning shaft tube (501) is provided with a top rotating seat (502) through a bearing. The lower end of each top rotating seat (502) is fixedly provided with a corrugated filter cover (503). The bottom end of the positioning shaft tube (501) is located in the middle of the corrugated filter cover (503). A bevel gear is integrally provided on the outside of the top rotating seat (502). A bevel gear is provided at the front end of the drive shaft (106) and meshes with the bevel gear on the outside of the top rotating seat (502).

4. The uniform powder coating device with recycling function as described in claim 1, characterized in that, An air control device (6) is fixedly installed on one side of the powder coating treatment chamber (1), and one side of the centralized air outlet (5) is connected to the air control device (6); three sets of motor-driven fans are rotatably installed on the outside and below the air control device (6).

5. The uniform powder coating device with recycling function as described in claim 1, characterized in that, The bottom of each of the filling pools (7) is a bucket-shaped structure. Each filling pool (7) is connected to a feeder (701) below it. Each feeder (701) is equipped with a feeding wheel (702) that rotates inside it. The feeding wheel (702) has six sets of V-shaped grooves on its outside.

6. The uniform powder coating device with recycling function as described in claim 5, characterized in that, The rear end of the filling pool (7) is fixedly provided with an eccentric pipe (8), and a driven impeller (801) is rotatably provided in the eccentric pipe (8). The shaft of the driven impeller (801) is fixedly connected to the shaft of the feeding wheel (702). One side of the eccentric pipe (8) is provided with a pipe connected to the lower rear side of the feeder (701). The lower front side of the feeder (701) is provided with a branch pipe connected to an electronic gate valve (9) and a tubular spray gun (11). The other end of the eccentric pipe (8) is also connected to an electronic gate valve (9). The rear ends of the two sets of electronic gate valves (9) on the same side are connected to an air inlet pipe (901) through a tee. The air inlet pipe (901) is connected to an air compressor.

7. The uniform powder coating device with recycling function as described in claim 6, characterized in that, Each of the air intake pipes (901) is fixedly equipped with a miniature electric cylinder (902), and each of the extension and retraction ends of the miniature electric cylinder (902) is fixedly equipped with a sliding valve core (903). The sliding valve core (903) is inserted into the electronic gate valve (9). Each of the electronic gate valves (9) is equipped with a pressure sensor (10) at the front end outlet.

8. The uniform powder coating device with recycling function as described in claim 6, characterized in that, The tubular spray gun (11) has a control button on its handle; an insulating tail frame (1101) is fixedly installed at the tail of the tubular spray gun (11), an outer cover (1102) is fixedly installed outside the insulating tail frame (1101), and four sets of friction blocks (1103) are fixedly installed inside the outer cover (1102), with the friction blocks (1103) passing through the insulating tail frame (1101).

9. The uniform powder coating device with recycling function as described in claim 8, characterized in that, The tubular spray gun (11) has an electrostatic conductive seat (12) inside which is rotatably mounted via a bearing. An insulating sleeve (1201) is also fixed between the electrostatic conductive seat (12) and the bearing. An electrostatic needle (1202) is fixedly mounted around one side of the electrostatic conductive seat (12). The other side of the electrostatic conductive seat (12) is a rotating shaft structure. A friction roller (1203) is fixedly mounted outside the rotating shaft structure. A friction block (1103) is attached to the friction roller (1203). A micro motor (13) is fixedly mounted outside the outer cover (1102). The micro motor (13) is connected to the rotating shaft structure of the electrostatic conductive seat (12) via a transmission.

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