Electrostatic rotary cup for coating

Abstract

The electrostatic rotating cup for coating comprises a rotating cup body, a forming cover and a coating processing assembly, and the rotating cup body is provided with a first space; the forming cover has conductivity, is mounted at one end of the rotary cup main body, and is provided with a communicating part communicating with the first space; one end of the coating treatment assembly is mounted in the first space, the other end of the coating treatment assembly penetrates through the communicating part, and the coating treatment assembly is used for treating the coating into charged coating particles under the power connection condition; wherein a conductive part is arranged between the forming cover and the coating treatment assembly, and when the coating treatment assembly is powered on, the conductive part is used for electrically connecting the coating treatment assembly with the forming cover. When the electrostatic rotary cup for coating works, charged coating particles sprayed out by the coating processing assembly and the forming cover have homopolar charges, the forming cover repels the charged coating particles, and the situation that pollution is caused due to the fact that the charged coating particles are attached to the outer surface of the forming cover is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the coating technical field, especially relates to a static rotary cup for coating. BACKGROUND

[0002] The static rotary cup is a basic product of modernization of industrial spraying equipment. In the coating process pipeline, the workpiece to be coated is grounded as an anode, and the static rotary cup is connected to a negative high voltage as a cathode. The coating is delivered to the cup head of the static rotary cup, and the cup head of the static rotary cup rotates at high speed under the drive of the motor. Due to the centrifugal force generated by the high-speed rotation of the cup head of the static rotary cup, the coating forms a film on the inner wall of the cup head and moves to the edge of the cup head. The film is cut and broken into charged coating particles through the fine teeth on the edge of the cup head. The static rotary cup comprises a shaped cover, and shaped air is sprayed out of the shaped cover towards the workpiece to be coated. Under the action of the shaped air and the electric field force, the charged coating particles move towards the surface of the workpiece to be coated and deposit on the surface of the workpiece to be coated.

[0003] However, most of the charged coating particles sprayed by the static rotary cup are sprayed onto the surface of the workpiece to be coated, and a part of the remaining charged coating particles will adhere to the outer surface of the shaped cover, causing pollution. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a static rotary cup for coating. When working, the charged coating particles sprayed by the coating treatment assembly have the same polarity as the shaped cover, and the shaped cover generates a repulsion effect on the charged coating particles, thereby reducing the pollution caused by the adhesion of the charged coating particles to the outer surface of the shaped cover.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The present application provides a static rotary cup for coating, comprising:

[0007] The rotary cup body is provided with a first space;

[0008] The shaped cover has conductivity, and the shaped cover is installed at one end of the rotary cup body. The shaped cover is provided with a communication part in communication with the first space;

[0009] The coating treatment assembly is installed at one end of the first space, and the other end of the coating treatment assembly passes through the communication part. The coating treatment assembly is used to treat the coating into charged coating particles under the condition of being connected to electricity.

[0010] The shaped cover and the coating treatment assembly are provided with a conductive part therebetween. When the coating treatment assembly is connected to electricity, the conductive part is used to electrically connect the coating treatment assembly and the shaped cover.

[0011] According to the technical scheme provided by the embodiment of the present application, the conductive part has a first contact surface and a second contact surface, the first contact surface is used to contact the paint treatment assembly, and the second contact surface is used to contact the forming cover.

[0012] According to the technical scheme provided by the embodiment of the present application, the first part of the second contact surface of the conductive part is provided with a first sealing part between the forming cover, and the conductive part and the forming cover are sealingly matched through the first sealing part.

[0013] According to the technical scheme provided by the embodiment of the present application, the second part of the second contact surface of the conductive part is further provided with a conductive body between the forming cover, and the conductive body contacts the second part of the second contact surface and the forming cover.

[0014] According to the technical scheme provided by the embodiment of the present application, the paint treatment assembly includes a motor, the conductive part is arranged between the motor and the forming cover, and the conductive part is used to contact the motor and the forming cover, respectively.

[0015] According to the technical scheme provided by the embodiment of the present application, the spin cup body includes a flow guide cover and a mounting part, the forming cover is mounted at one end of the flow guide cover, and the end of the flow guide cover away from the forming cover is mounted on the mounting part; the forming cover is provided with a plurality of exhaust channels, the flow guide cover and the paint treatment assembly have a gas cavity, the mounting part is provided with at least one gas supply channel, one end of the exhaust channel is communicated with the gas cavity, the other end of the exhaust channel is communicated with the outside, one end of the gas supply channel is used to be communicated with a gas source, and the other end of the gas supply channel is communicated with the gas cavity.

[0016] According to the technical scheme provided by the embodiment of the present application, the inner wall of the flow guide cover is provided with a blocking part, and at least part of the blocking part is oppositely arranged with the outlet of the gas supply channel.

[0017] According to the technical scheme provided by the embodiment of the present application, the gas cavity surrounds the paint treatment assembly, and the blocking part is a blocking ring which surrounds the inner wall of the flow guide cover.

[0018] According to the technical scheme provided by the embodiment of the present application, the forming cover is provided with a gas guide groove, the opening of the gas guide groove faces the gas cavity, and each exhaust channel is communicated with the gas guide groove.

[0019] According to the technical scheme provided by the embodiment of the present application, the flow guide cover and the mounting part are provided with a second sealing part, and the flow guide cover and the mounting part are sealingly matched through the second sealing part.

[0020] From the above technical scheme, the present application has at least the following beneficial effects:

[0021] In the present application, when the electrostatic spinning cup for painting is working, the paint processing assembly is connected to electricity, and the paint is processed by the paint processing assembly to become charged paint particles; the paint processing assembly is electrically connected to the forming cover through the conductive part, so that the conductive part and the forming cover are charged; in the process that the electrostatic spinning cup for painting sprays the charged paint particles to the workpiece to be painted, the charged paint particles and the forming cover have the same polarity charge, according to the repulsion of the same polarity charge, the forming cover has a repulsion effect on the charged paint particles that are not sprayed to the surface of the workpiece to be painted, reduces the amount of charged paint particles attached to the surface of the forming cover, and reduces the pollution of the surface of the forming cover due to the attachment of the charged paint particles.

[0022] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in the present application does not imply that all features and advantages can be achieved in any single embodiment. On the contrary, it can be understood that the description of a feature or a beneficial effect means that the specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in the specification does not necessarily refer to the same embodiment. Further, the technical features, technical solutions and beneficial effects described in the present embodiment can be combined in any appropriate manner. Those skilled in the art will understand that the embodiments can be implemented without one or more specific technical features, technical solutions or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects can be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The schematic diagram of the electrostatic spinning cup for painting, the mounting pad and the supporting rod provided in the present application is shown in the figure;

[0024] Figure 2 The cross-sectional view of the electrostatic spinning cup for painting in the present application is shown in the figure; Figure 1

[0025] Figure 3 The enlarged view of part A in the present application is shown in the figure; Figure 3

[0026] Figure 4 The cross-sectional view of the electrostatic spinning cup for painting in the present application is shown in the figure; Figure 1

[0027] Figure 5 The enlarged view of part B in the present application is shown in the figure. Figure 4

[0028] ​​​​Reference numerals: 1 - swivel cup body; 11 - mounting; 111 - gas supply channel; 12 - fairing; 121 - barrier; 13 - gas cavity; 14 - first space; 2 - forming cover; 21 - communication part; 22 - exhaust channel; 23 - gas guide groove; 3 - paint processing assembly; 31 - motor; 32 - paint pipe; 33 - nozzle; 34 - cup head; 35 - distribution disc; 36 - motor seat; 4 - electrically conductive member; 41 - second contact surface; 5 - first seal; 6 - electrically conductive body; 7 - second seal; 8 - mounting pad; 9 - support rod. DETAILED DESCRIPTION

[0029] The terms "first", "second", and "third" and the like in the description and the drawings of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and embodiments of the application.

[0030] In the present application, the terms "exemplary" and "for example" are used to illustrate at least one example, embodiment or implementation of the present application. Any embodiment or implementation described as "exemplary" or "for example" should not be construed as being more preferred or advantageous than other embodiments or implementations. The illustrative words "for example" and "for instance" are used herein to provide a non-exhaustive list of instances that otherwise could be endless. Numerous other instances of the same or similar process, materials, and / or devices are also possible and within the scope of the application.

[0031] The electrostatic swivel cup is a basic product for modernization of industrial spraying equipment. In a painting process pipeline, the workpiece to be painted is grounded as an anode, and the electrostatic swivel cup is connected to a negative high voltage as a cathode. The electrostatic swivel cup sprays charged paint particles, which are attracted to the surface of the workpiece to be painted under the action of electric field force and forming air. The workpiece to be painted may be, for example, a car door or a residential entrance door that needs to be painted on the surface.

[0032] However, in the prior art, most of the charged paint particles sprayed by the electrostatic swivel cup are adsorbed on the surface of the workpiece to be painted, and the remaining charged paint particles are attached to the outer surface of the forming cover of the electrostatic swivel cup, causing pollution.

[0033] Therefore, the present application provides an electrostatic swivel cup for painting. When in operation, the charged paint particles sprayed by the paint processing assembly have the same polarity as the forming cover, and the forming cover repels the charged paint particles, thereby reducing the pollution caused by the attachment of the charged paint particles to the outer surface of the forming cover.

[0034] As shown in FIG. 1, the electrostatic swivel cup for painting comprises a swivel cup body 1, a paint processing assembly 3, an electrically conductive member 4, a first seal 5, an electrically conductive body 6, a second seal 7, a mounting pad 8, and a support rod 9. Figures 1-2As shown, the embodiment of the present application provides a coating electrostatic spinning cup, which comprises a spinning cup body 1, a forming cover 2 and a coating treatment assembly 3. The spinning cup body 1 is provided with a first space 14. The forming cover 2 is installed at one end of the spinning cup body 1, and the forming cover 2 is provided with a communication part 21 in communication with the first space 14. One end of the coating treatment assembly 3 is installed in the first space 14, and the other end of the coating treatment assembly 3 passes through the communication part 21. The coating treatment assembly 3 is used to treat the coating into charged coating particles under the condition of being connected to electricity. The forming cover 2 and the coating treatment assembly 3 are provided with a conductive part 4 therebetween. The forming cover 2 has conductivity. When the coating treatment assembly 3 is connected to electricity, the conductive part 4 is used to electrically connect the coating treatment assembly 3 and the forming cover 2.

[0035] When the coating electrostatic spinning cup works, the coating treatment assembly 3 is connected to negative high voltage electricity. After being treated by the coating treatment assembly 3, the coating becomes charged coating particles. The coating treatment assembly 3 is electrically connected to the forming cover 2 through the conductive part 4, so that the conductive part 4 and the forming cover 2 are both negatively charged. In the process of the coating electrostatic spinning cup spraying the charged coating particles to the workpiece to be coated, the charged coating particles and the forming cover 2 are both negatively charged. According to the repulsion between the same polarity charges, the forming cover 2 has a repulsion effect on the charged coating particles that are not sprayed to the surface of the workpiece to be coated, so as to reduce the amount of the charged coating particles attached to the surface of the forming cover 2 and reduce the pollution of the surface of the forming cover 2 caused by the attachment of the charged coating particles.

[0036] Specifically, the communication part 21 can be a communication hole or a communication groove. One end of the coating treatment assembly 3 is installed in the first space 14 of the spinning cup body 1, and the other end of the coating treatment assembly 3 passes through the communication part 21 of the forming cover 2 to extend to the outside of the forming cover 2. The charged coating particles formed after being treated by the coating treatment assembly 3 are sprayed out from the end of the coating treatment assembly 3 extending to the outside of the forming cover 2, that is, the charged coating particles are formed outside the forming cover 2.

[0037] The coating treatment assembly 3 comprises a motor 31, a motor seat 36, a coating pipe 32, a nozzle 33, a cup head 34 and a distribution disc 35. The motor seat 36 is connected to the spinning cup body 1, and the motor 31 is press-fitted on the spinning cup body 1 by the motor seat 36. The motor 31 has a shell and a driving shaft. The driving shaft is installed in the shell, and one end of the driving shaft extends out of the shell. The driving shaft is a hollow structure, and the coating pipe 32 is inserted into the driving shaft. A first end of the coating pipe 32 is fixedly connected to the shell of the motor 31 and can be electrically connected to the shell of the motor 31. The first end is used to be connected to a high-voltage electrostatic cable. A second end of the coating pipe 32 is connected to the nozzle 33, and the coating pipe 32 is used to transport coating. The cup head 34 is connected to the driving shaft of the motor 31, and the distribution disc 35 is connected to the cup head 34. One end of the nozzle 33 away from the coating pipe 32 faces the distribution disc 35. The coating pipe 32, the shell and the driving shaft of the motor 31, and the cup head 34 are metal parts.

[0038] Specifically, the first end of the paint pipe 32 has direct contact with the shell of the motor 31, or the first end of the paint pipe 32 is fixedly connected with the shell of the motor 31 through metal connecting members such as screws, so that the paint pipe 32 can conduct electricity in the case of being electrified, and the paint pipe 32 and the shell of the motor 31 can conduct electricity.

[0039] In operation, paint is injected into the paint pipe 32, the driving shaft of the motor 31 rotates and drives the cup head 34 and the distribution disc 35 to rotate, the static high-voltage cable line conducts negative high voltage to the paint pipe 32, so that the paint transported in the paint pipe 32, the shell of the motor 31 and the driving shaft, and the cup head 34 are all charged with negative high voltage, the paint passes through the paint pipe 32, is sprayed towards the rotating distribution disc 35 through the nozzle 33, and then flows to the inner wall of the cup head 34 through the gap between the distribution disc 35 and the cup head 34; the rotation of the cup head 34 generates centrifugal force on the paint, so that the paint forms a thin film on the inner wall of the cup head 34 and continuously moves towards the edge of the cup head 34, and the thin film is cut and broken into charged paint particles through the fine teeth at the edge of the cup head 34.

[0040] As shown in Figure 1 The outer side of the electrostatic rotating cup for painting is connected with the mounting pad 8, the mounting pad 8 is connected to one end of the support rod 9, and the other end of the support rod 9 is used to be connected with the fixing device. The mounting pad 8 and the support rod 9 can provide reasonable and reliable fixation for the electrostatic rotating cup for painting installed in different installation environments, so that the electrostatic rotating cup for painting can stably operate.

[0041] The paint can be paint, and since the paint is a suspension liquid containing a large amount of particulate matter and colloid, the particulate matter and colloid will stick to the cup head 34 and the nozzle 33, so regular cleaning and maintenance are required. In order to facilitate cleaning and maintenance, the cup head 34 and the driving shaft of the motor 31 are detachably connected, and the nozzle 33 and the paint pipe 32 are detachably connected, and the cup head 34 and the nozzle 33 can be directly detached for cleaning.

[0042] For example, the cup head 34 and the driving shaft of the motor 31 can be threadedly connected; or the cup head 34 is provided with a buckle, and the driving shaft of the motor 31 is provided with a clamping groove, and the buckle and the clamping groove are clamped and connected. Similarly, the nozzle 33 and the paint pipe 32 can also be threadedly connected or clamped and connected in a detachable manner.

[0043] In a specific embodiment, the conductive member 4 is arranged between the motor 31 and the shaped cover 2, and the conductive member 4 is used to respectively contact the motor 31 and the shaped cover 2.

[0044] Specifically, the conductive part 4 can be connected with the motor 31, the conductive part 4 and the motor 31 are in contact with each other, the conductive part 4 and the forming cover 2 are in contact with each other, when the electrostatic spinning cup works, the electrostatic high-voltage cable line conducts negative high voltage to the paint pipe 32, the paint pipe 32 conducts negative high voltage to the motor 31, the motor 31 conducts negative high voltage to the forming cover 2 through the conductive part 4.

[0045] In addition, the conductive part 4 can also be connected with the forming cover 2, the conductive part 4 and the forming cover 2 are in contact with each other, and the conductive part 4 and the motor 31 are in contact with each other.

[0046] The forming cover 2 has conductivity, and the forming cover 2 can be a metal part or a conductive composite material part.

[0047] The paint pipe 32 is connected with the motor 31, the cup head 34 is connected with the motor 31, the motor 31 is electrically connected with the forming cover 2 through the conductive part 4, when the electrostatic high-voltage cable line conducts negative high voltage to the paint pipe 32, the motor 31, the cup head 34, the conductive part 4 and the forming cover 2 are all with negative high voltage, at this time, the paint pipe 32, the motor 31, the cup head 34, the conductive part 4 and the forming cover 2 are all at the same potential, preventing the parts that can conduct electricity in the electrostatic spinning cup from having a potential difference, avoiding the adverse phenomena such as electric corrosion and electrostatic breakdown caused by the potential difference.

[0048] In a specific embodiment, the conductive part 4 has a first contact surface and a second contact surface 41, the first contact surface is used to contact the paint processing assembly 3, and the second contact surface 41 is used to contact the forming cover 2, so that when the paint processing assembly 3 is connected to electricity, the paint processing assembly 3 is electrically connected with the forming cover 2 through the conductive part 4.

[0049] Specifically, as shown in Figure 3 The first part of the second contact surface 41 of the conductive part 4 and the forming cover 2 are provided with a first sealing part 5, and the first part of the second contact surface 41 and the forming cover 2 are sealed by the first sealing part 5, preventing external pollutants such as dust from invading between the conductive part 4 and the forming cover 2 and causing pollution to the inside of the spinning cup body 1.

[0050] The first sealing part 5 can be a sealing gasket or sealing glue, etc.

[0051] As shown in Figure 3 The first sealing part 5 is installed on the first part of the second contact surface 41 of the conductive part 4. In other embodiments, the first sealing part 5 can also be installed on the forming cover 2.

[0052] In one specific embodiment, the conductive element 4 is annular, at least a portion of which is located within the connecting portion 21 of the molding cover 2. A first contact surface is disposed on the inner ring of the annular conductive element 4, and a second contact surface 41 is disposed on the outer ring of the annular conductive element 4. The inner ring of the annular conductive element 4 is connected to the coating treatment assembly 3. The first sealing element 5 is a sealing ring, which is installed on the first portion of the second contact surface 41 of the outer ring of the annular conductive element 4. The sealing ring is pressed between the first portion and the inner wall of the connecting portion 21 of the molding cover 2.

[0053] The inner ring of the annular conductive component 4 may be provided with an internal thread, which has a first contact surface. The coating treatment component 3 is provided with an external thread. The inner ring of the annular conductive component 4 and the coating treatment component 3 are connected through the cooperation of the internal and external threads.

[0054] In order to ensure the conductivity stability between the conductive element 4 and the molding cover 2, based on the sealing fit between the first part of the second contact surface 41 of the conductive element 4 and the molding cover 2 by the first sealing element 5, a conductive body 6 is also provided between the second part of the second contact surface 41 of the conductive element 4 and the molding cover 2. The conductive body 6 is in contact with both the second part of the second contact surface 41 and the molding cover 2.

[0055] When the coating processing component 3 is energized, the coating processing component 3, the conductive component 4, the conductive body 6 and the molding cover 2 form a conductive path, so that the conductive component 4, the conductive body 6 and the molding cover 2 are all energized.

[0056] Specifically, the conductor 6 can be installed on the second part of the second contact surface 41, or the conductor 6 can also be installed on the molded cover 2.

[0057] like Figure 2 As shown, and in combination Figure 3 The second part of the second contact surface 41 of the conductive element 4 is a groove. The groove is located inside the connecting part 21 of the molded cover 2. The conductive body 6 is installed in the groove, and one end of the conductive body 6 extending out of the groove contacts the inner wall of the connecting part 21.

[0058] One end of the conductor 6 extending out of the groove is a spherical surface, which contacts the inner wall of the connecting part 21. During the assembly and disassembly of the molded cover 2, the friction between the inner wall of the connecting part 21 and the spherical surface of the conductor 6 is small, reducing the impact on the assembly and disassembly process of the molded cover 2.

[0059] The number of conductors 6 is one or more. In one specific embodiment, the conductor 6 is a metal elastic pin.

[0060] In one specific embodiment, such as Figure 4As shown, the spinning cup body 1 comprises a fairing 12 and a mounting member 11, the fairing 12 is a hollow structure, the mounting member 11 is provided with a first space 14, the forming cover 2 is mounted at one end of the fairing 12, and the other end of the fairing 12 away from the forming cover 2 is mounted on the mounting member 11; the forming cover 2 is provided with a plurality of exhaust channels 22, the fairing 12 and the paint processing assembly 3 have a gas cavity 13, the mounting member 11 is provided with at least one gas supply channel 111, one end of the exhaust channel 22 is communicated with the gas cavity 13, the other end of the exhaust channel 22 is communicated with the outside, one end of the gas supply channel 111 is used for being communicated with a gas source, and the other end of the gas supply channel 111 is communicated with the gas cavity 13.

[0061] In the working process of the electrostatic spinning cup for coating, the gas source supplies compressed air to the gas supply channel 111, the compressed air flows into the gas cavity 13 through the gas supply channel 111, then flows into the plurality of exhaust channels 22 from the gas cavity 13, and finally is discharged from the plurality of exhaust channels 22 to form forming air, the forming air provides wind power for the charged paint particles, so that the charged paint particles move towards the surface of the workpiece to be coated.

[0062] In this embodiment, the compressed air sequentially passes through the gas supply channel 111, the gas cavity 13 and the exhaust channel 22, the gas cavity 13 has a certain distribution effect on the compressed air discharged from the gas supply channel 111, so that the compressed air discharged from the gas supply channel 111 can be more uniformly dispersed into the plurality of exhaust channels 22, and then the exhaust capacity of the plurality of exhaust channels 22 is more uniform, so that the charged paint particles are more uniformly covered on the surface of the workpiece to be coated.

[0063] In order to improve the uniformity of the forming air, the inner wall of the fairing 12 is provided with a blocking part 121, at least part of the blocking part 121 is oppositely arranged with the outlet of the gas supply channel 111.

[0064] In the working process, the compressed air flowing out of the gas supply channel 111 flows to the blocking part 121, the blocking part 121 disperses the compressed air in the gas cavity 13, and then the compressed air flows into the plurality of exhaust channels 22 from the gas cavity 13, so as to avoid that the compressed air flowing out of the gas supply channel 111 preferentially flows into the exhaust channel 22 close to the gas supply channel 111, resulting in that the air flow in the exhaust channel 22 close to the gas supply channel 111 is large, and the air flow in the exhaust channel 22 far away from the gas supply channel 111 is small. In this embodiment, the compressed air flowing out of the gas supply channel 111 is further dispersed in the gas cavity 13 by the blocking part 121, and then the compressed air flowing out of the gas cavity 13 can be more uniformly dispersed into the plurality of exhaust channels 22, so that the exhaust capacity of the plurality of exhaust channels 22 is more uniform, and the charged paint particles are more uniformly covered on the surface of the workpiece to be coated, and the spray pattern formed on the surface of the workpiece to be coated is more uniform.

[0065] Further, the gas cavity 13 surrounds the paint treatment assembly 3, and the blocking part 121 is a blocking ring that surrounds the inner wall of the fairing 12.

[0066] In operation, the compressed air discharged from the gas supply channel 111 flows to the blocking ring and is evenly dispersed in the gas cavity 13, and the gas cavity 13 surrounds the paint treatment assembly 3, which can produce a greater distribution effect on the compressed air flowing into the gas cavity 13, so that the compressed air flowing out of the gas cavity 13 can be more evenly dispersed into the plurality of exhaust channels 22, further improving the consistency of the exhaust capacity of the plurality of exhaust channels 22.

[0067] In addition, as shown in Figure 4 The forming cover 2 is also provided with a gas guide groove 23, and the opening of the gas guide groove 23 faces the gas cavity 13. Each exhaust channel 22 communicates with the gas guide groove 23.

[0068] In operation, the compressed air in the gas cavity 13 flows into the gas guide groove 23, and the compressed air is dispersed in the gas guide groove 23 and then flows into the plurality of exhaust channels 22.

[0069] In this embodiment, the gas guide groove 23 also has a certain distribution effect on the compressed air. After being distributed by the gas cavity 13 and the gas guide groove 23, the compressed air can be more evenly dispersed into the plurality of exhaust channels 22, so that the exhaust capacity of the plurality of exhaust channels 22 is more uniform.

[0070] In a specific embodiment, the gas cavity 13 surrounds the paint treatment assembly 3, the blocking part 121 is a blocking ring that surrounds the inner wall of the fairing 12, the plurality of exhaust channels 22 are distributed along the circumference of the forming cover 2, and the gas guide groove 23 is annular.

[0071] Specifically, as shown in Figure 5 The fairing 12 and the mounting member 11 are sealingly connected through the second sealing member 7, which prevents dust and other external pollutants from entering between the fairing 12 and the mounting member 11 and causing pollution inside the rotary cup body 1.

[0072] The second sealing member 7 is mounted on the fairing 12, or the second sealing member 7 is mounted on the mounting member 11.

[0073] For easy cleaning and maintenance, the forming cover 2 and the fairing 12 are detachably connected, and the fairing 12 and the mounting member 11 are detachably connected. For example, the forming cover 2 and the fairing 12 can be threadedly connected, or the fairing 12 is provided with a buckle and the forming cover 2 is provided with a clamping groove, and the buckle and the clamping groove are connected by clamping. Similarly, the fairing 12 and the mounting member 11 can be threadedly connected or clamped together.

[0074] Since the fairing 12 and the mounting 11 are sealed by the second sealing member 7, the sealing between the fairing 12 and the mounting 11 can be ensured after the fairing 12 is repeatedly disassembled and assembled.

[0075] In a specific embodiment, the fairing 12 and the mounting 11 are made of plastic, and the second sealing member 7 is a sealing ring which is installed on the fairing 12 and is pressed between the fairing 12 and the mounting 11.

[0076] The above merely provides a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application.

Claims

1. An electrostatic bell for painting, characterized by, include: The main body of the rotating cup has a first space. A molding cover, which is conductive, is installed at one end of the main body of the rotating cup, and the molding cover is provided with a connecting part that communicates with the first space; A coating processing assembly, one end of which is installed in the first space and the other end of which passes through the connecting portion, is used to process coating into charged coating particles when energized. A conductive element is provided between the molding cover and the coating treatment component. When the coating treatment component is energized, the conductive element is used to electrically connect the coating treatment component and the molding cover.

2. The electrostatic bell for painting according to claim 1, wherein The conductive component has a first contact surface and a second contact surface, the first contact surface being used to contact the coating treatment component, and the second contact surface being used to contact the molding cover.

3. The electrostatic bell for painting according to claim 2, wherein A first sealing element is provided between the first portion of the second contact surface of the conductive element and the molding cover, and the conductive element and the molding cover are sealed together by the first sealing element.

4. The electrostatic bell for painting according to claim 3, wherein A conductor is further disposed between the second portion of the second contact surface of the conductive element and the molding cover, and the conductor is in contact with both the second portion of the second contact surface and the molding cover.

5. The electrostatic bell for painting according to claim 1, wherein The coating processing assembly includes a motor, and the conductive element is disposed between the motor and the molding cover, and the conductive element is used to contact the motor and the molding cover respectively.

6. The electrostatic bell for painting according to claim 1, wherein The main body of the vortex cup includes a flow guide and a mounting component. The forming cover is mounted on one end of the flow guide, and the end of the flow guide away from the forming cover is mounted on the mounting component. The molding cover is provided with multiple exhaust channels, and there is a gas cavity between the guide cover and the coating treatment component. The mounting component is provided with at least one air supply channel. One end of the exhaust channel is connected to the gas cavity, and the other end of the exhaust channel is connected to the outside. One end of the air supply channel is used to connect to a gas source, and the other end of the air supply channel is connected to the gas cavity.

7. The electrostatic bell for painting according to claim 6, wherein The inner wall of the air guide is provided with a baffle, and at least a portion of the baffle is disposed opposite to the outlet of the air supply channel.

8. The electrostatic bell for painting according to claim 7, wherein The gas chamber surrounds the coating treatment assembly, and the baffle is a baffle ring that surrounds the inner wall of the flow guide.

9. The electrostatic bell for painting according to claim 6, wherein The forming cover is provided with an air guide groove, the opening of which faces the gas cavity, and each of the exhaust channels is connected to the air guide groove.

10. The electrostatic bell for painting according to claim 6, wherein A second sealing element is provided between the flow guide and the mounting component, and the flow guide and the mounting component are sealed together by the second sealing element.

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