Energy field assisted electrostatic powder spraying system and method

Abstract

The invention belongs to the field of electrostatic powder spraying processing, and provides an energy field assisted electrostatic powder spraying system. The system comprises a spray gun, a high-voltage generator and an energy field module, an electrode on a gun body of the spray gun is connected with the high-voltage generator to generate a high-voltage electrostatic field, and under the action of the high-voltage electrostatic field, spraying original powder particles collide with ionized air particles to carry negative charges; the sub-modules of the energy field module coaxially act on the spraying powder at the same time, so that the spraying original powder becomes modified powder in a high-surface-activity ionization state; under the combined action of the pressure of the high-voltage electrostatic field and compressed air, the modified powder which is high in surface activity and uniform in dispersion is adsorbed to the surface of a workpiece. According to the energy field assisted electrostatic powder spraying system, the pain point that the quality of the sprayed surface is difficult to control can be solved, and the production cost is effectively reduced. The invention further provides an energy field assisted electrostatic powder spraying method.

Description

Technical Field

[0001] This invention relates to the field of electrostatic powder coating, and in particular to a system and method for energy field-assisted electrostatic powder coating. Background Technology

[0002] With the rapid development of the manufacturing industry, higher demands are being placed on the manufacturing capabilities and surface processing quality of metal materials. Among these, the surface treatment processes for different sheet materials are a crucial aspect. Spray coating technology is a type of material surface treatment technology that involves applying a layer of material to the processed surface, thereby isolating the object from the surrounding environment and preventing metal corrosion. Compared to other surface treatment methods, it offers advantages such as high production efficiency, rich color options, and cost-effectiveness, and is widely used in industries such as home appliances, special equipment, and automobile manufacturing.

[0003] There are many spraying processes for metal sheets, including air spraying, electrophoretic coating, vacuum coating, thermal spraying, and electrostatic powder coating. Among these methods, electrostatic powder coating is currently the most widely used due to considerations such as environmental protection, energy conservation, and technological maturity. Electrostatic powder coating generally uses electrostatic action to cause powder to adhere to the workpiece surface, forming a powdery coating for surface treatment. However, due to differences in the leveling properties of the raw powder itself, the electrostatic adsorption on the workpiece surface can easily lead to poor surface smoothness and uneven color. To improve the surface quality accuracy of the material, process parameters are usually repeatedly adjusted during processing to ensure the powder coating is in a fully and uniform atomized flow state, avoiding problems such as uneven powder coating leveling and surface quality differences. However, this not only affects processing efficiency but also increases production costs. Summary of the Invention

[0004] In view of the shortcomings and deficiencies of the existing technology, the present invention provides an energy field-assisted electrostatic powder spraying system, which can solve the pain point of difficult control of the sprayed surface quality and effectively reduce production costs.

[0005] The present invention also provides an energy field-assisted electrostatic powder spraying method, which can not only uniformly coat the workpiece for surface treatment, but also perform directional spraying by adjusting the energy field parameters.

[0006] This invention is achieved through the following technical solution:

[0007] A system for energy field-assisted electrostatic powder coating includes a spray gun, a high-voltage generator, and an energy field module. Electrodes on the spray gun body are connected to the high-voltage generator to generate a high-voltage electrostatic field. Under the action of the high-voltage electrostatic field, the original powder particles collide with ionized air particles and become negatively charged. Sub-modules of the energy field module simultaneously act coaxially on the powder, making the original powder into a modified powder with a highly surface-active ionized state. Under the combined action of the high-voltage electrostatic field pressure and compressed air, the highly surface-active and uniformly dispersed modified powder is adsorbed onto the surface of the workpiece.

[0008] Preferably, the sub-module of the energy field module is a radio frequency induction power supply module, which is used to generate high-temperature ionization energy of alternating current to modify the powder surface to different degrees.

[0009] Preferably, the energy field module is a sub-module of the coupling magnetic field module. The magnetic field is used to change the charge distribution on the surface of the powder particles or to generate magnetic dipoles. The coupling magnetic field module works in conjunction with the existing power circuit in the electrostatic powder spraying process. Under the action of the current, it enhances the surface modification of the original powder particles by utilizing electrochemical principles.

[0010] Preferably, the sub-module of the energy field module is a multi-dimensional vibration and ultrasound module. On the one hand, the multi-dimensional vibration and ultrasound module uses mechanical vibration force in multiple directions to comprehensively impact and disperse powder particles, reducing the agglomeration phenomenon between particles. On the other hand, the multi-dimensional vibration and ultrasound module uses mechanical force to activate the surface of powder particles, making the powder particles more likely to undergo electrostatic reactions or adsorption, thereby fully modifying the surface of the powder particles.

[0011] Preferably, the sub-module of the energy field module is a combination of any two of the following: a multidimensional vibration ultrasound module, a radio frequency induction power supply module, and a coupled magnetic field module, to generate a composite energy field to de-agglomerate the powder and activate its surface properties.

[0012] Preferably, the sub-modules in the energy field module include a multi-dimensional vibration and ultrasound module, a radio frequency induction power supply module, and a coupling magnetic field module; the three sub-modules act coaxially on the sprayed powder raw material at the same time to generate a composite energy field, which can be used to achieve powder disaggregation and surface property activation, thereby reducing the probability of quality problems such as orange peel texture, color difference and poor uniformity on the workpiece surface while achieving efficient coating.

[0013] Furthermore, it is possible to perform directional coating on the workpiece by adjusting the sub-module parameters of the energy field module.

[0014] Preferably, the sub-modules of the energy field module act coaxially on the powder spray gun or the workpiece to be sprayed, assisting in electrostatic powder spraying.

[0015] A method for energy field-assisted electrostatic powder coating includes:

[0016] S1. Connect the spray gun electrode to the high voltage generator to generate a high voltage electrostatic field;

[0017] S2. The corona ionization generated by the high-voltage electrostatic field causes the original powder to collide with ionized air particles and become negatively charged.

[0018] S3, the sub-modules of the external energy field module act coaxially on the powder spray gun or the workpiece to be sprayed, so that the original powder to be sprayed becomes a modified powder with a highly surface active ionized state.

[0019] S4. Under the combined action of high-voltage electrostatic field pressure and compressed air, the modified powder with high surface activity and uniform dispersion is adsorbed onto the workpiece surface, thereby achieving the high-efficiency spraying processing requirements of the workpiece.

[0020] Preferably, the sub-modules of the energy field module are one or more combinations of a multidimensional vibration ultrasound module, a radio frequency induction power supply module, and a coupling magnetic field module.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0022] (1) High processing efficiency and wide range, coaxial and simultaneous action on the spraying material, making full use of high energy fields (mechanical action, electromagnetic induction, electrostatic adsorption) to fully deagglomerate the powder raw materials. Compared with the traditional method of using powder particles to collide with ionized air particles and have electrostatic adsorption force when the powder is sprayed from the spray gun, this invention can effectively reduce the energy loss of powder movement through the action of multiple energy fields or a single energy field. After high temperature, electromagnetic and mechanical crushing, the surface activity of the powder and the leveling of the raw material are enhanced. The powder flies to the grounded workpiece surface with the airflow and is uniformly adsorbed on the workpiece surface. With the help of the subsequent curing process, the surface of the workpiece is cured into a uniform, continuous, flat and smooth coating.

[0023] (2) This invention only needs to provide the original powder with a single or composite energy field with different voltages, currents, magnetic fields and mechanical vibrations, which can reduce the problems of poor coating quality and uneven color caused by the original powder clumping (environmental temperature and humidity, manufacturing process and other factors) during the spraying process, and increase the powder application rate of the material, which greatly improves the surface spraying efficiency.

[0024] (3) High surface quality. The system or method of electrostatic powder spraying with energy field assistance enhances the surface activity of powder, while reducing powder agglomeration through the effect of composite (or single) energy fields, enhancing the electrostatic adsorption capacity of powder, improving spraying efficiency, and improving the surface quality of the processed material.

[0025] (4) The surface of the workpiece can be directionally processed. By adjusting the magnetic field (changing the direction of powder movement) and the direction of ultrasonic vibration (single or combined), the position of powder adhesion can be effectively adjusted, and the electrostatic adsorption capacity of a certain position of the workpiece can be enhanced, thereby achieving the purpose of directional spraying of the workpiece surface.

[0026] (5) Low production cost. Due to the inconsistent quality of coating raw materials and the influence of environmental temperature, humidity, and storage requirements, the coating quality of the final product is easily affected. Compared with purchasing high-precision processing equipment, the system and method of using energy field-assisted spraying only needs to act on the original powder spraying process. The auxiliary energy field module enhances the electrostatic adsorption capacity, which can reduce the impact of powder raw materials on processing quality, thereby improving the surface quality and process capability of product spraying at low cost. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the principle of traditional electrostatic powder coating.

[0028] Figure 2 This is a schematic diagram of the energy field module acting on the spray gun to assist electrostatic powder spraying in one embodiment;

[0029] Figure 3 This is a schematic diagram of the energy field module acting on the workpiece to assist in electrostatic powder spraying in one embodiment;

[0030] Figure 4 This is a schematic diagram illustrating the principle of electrostatic powder coating assisted only by the radio frequency induction power module in one embodiment;

[0031] Figure 5 This is a schematic diagram illustrating the principle of electrostatic powder coating assisted by only the coupled magnetic field module in one embodiment;

[0032] Figure 6 This is a schematic diagram illustrating the principle of electrostatic powder coating assisted by a multidimensional vibration ultrasonic module in one embodiment. Detailed Implementation

[0033] The preferred embodiments of the present invention are given below with reference to the accompanying drawings, and the technical solutions of the present invention are described in detail.

[0034] The working principle of an energy field-assisted electrostatic powder coating system includes:

[0035] like Figure 1 As shown, electrostatic powder coating utilizes electrodes on the spray gun body connected to a high-voltage generator to produce a high-voltage electrostatic field. The corona ionization generated by this high-voltage electrostatic field causes the powder particles to collide with ionized air particles and become negatively charged. Under the combined action of the high-voltage electrostatic field pressure and compressed air, the powder flies from the spray gun nozzle towards the workpiece and is uniformly adsorbed onto the workpiece surface.

[0036] An external adjustable radio frequency induction power module can generate high-temperature ionization energy of alternating current to modify the powder surface to varying degrees, effectively preventing powder agglomeration.

[0037] The added multi-dimensional vibration ultrasonic module can adjust the ultrasonic source parameters to achieve multi-dimensional vibration. Under the action of mechanical force, it can decompose the agglomerated spraying material into smaller powder particles, making it easier for them to interact with the surface of the workpiece to be processed, increasing the contact area between the spraying powder and the workpiece surface, thereby improving the uniformity of surface spraying.

[0038] The added coupling magnetic field module works in conjunction with the existing power-carrying circuit in the electrostatic powder coating process. During operation, the magnetic field not only enhances the electrostatic or magnetic repulsion between powder particles by changing the charge distribution on the surface of the powder particles or generating magnetic dipoles, making the powder particles easier to disperse; but also, when the original powder particles are in the magnetic field, they are attracted by the magnetic force, thus moving or aligning along the direction of the magnetic field lines, reducing agglomeration. Simultaneously, under the action of the current, the surface modification of the original powder particles is enhanced using electrochemical principles, further increasing the uniformity of the powder coating. Furthermore, under the coupling of the radio frequency induction power supply, an alternating magnetic field is generated, which not only magnetizes the powder particles and changes their direction of movement, but also the high-temperature plasma region generated by the high-frequency electromagnetic field effectively disperses powder agglomerates (increasing the system's energy and the activity of the powder surface).

[0039] The above-mentioned radio frequency induction power supply module, multi-dimensional vibration ultrasound module, and coupling magnetic field module can all be used individually or in combination. They can uniformly coat the workpiece, and can also be used for directional coating of the workpiece by adjusting the parameters.

[0040] Specifically, an energy field-assisted electrostatic powder coating system includes a spray gun, a high-voltage generator, and an energy field module. Electrodes on the spray gun body are connected to the high-voltage generator to generate a high-voltage electrostatic field. Under the action of the high-voltage electrostatic field, the original powder particles collide with ionized air particles and become negatively charged. Sub-modules of the energy field module simultaneously act coaxially on the powder, making the original powder become modified powder with a highly surface-active ionized state. Under the combined action of the high-voltage electrostatic field pressure and compressed air, the highly surface-active and uniformly dispersed modified powder is adsorbed onto the workpiece surface.

[0041] By adjusting different parameters of the energy field submodule, surface quality problems such as powder agglomeration, poor leveling, and uneven orange peel texture on the sprayed surface can be effectively solved.

[0042] Example 1:

[0043] In a preferred embodiment, an energy field-assisted electrostatic powder coating system is a multi-energy field composite-assisted electrostatic powder coating system, such as... Figure 2 , Figure 3 As shown, the energy field module includes sub-modules such as a multidimensional vibration ultrasound module, a radio frequency induction power supply module, and a coupling magnetic field module. Among them:

[0044] Radio frequency (RF) induction power supply module: This is a power supply capable of generating an adjustable frequency sinusoidal voltage within the radio frequency range (approximately 3kHz to 300GHz) and possessing a certain power. The RF induction power supply mainly includes a power supply unit, an oscillation circuit module, a power amplifier module, and an RF power detector.

[0045] Radio frequency power supplies generate high-frequency electric fields, which excite the ionization of molecules in the air, thereby generating plasma. These plasmas continuously oscillate and impact the powder surface, thus giving the powder new surface properties and modifying the powder surface to different degrees.

[0046] Multidimensional Vibration Ultrasonic Module: Used to generate multidimensional vibrational mechanical forces. The multidimensional vibration ultrasonic module mainly consists of an ultrasonic generator and a parameter control system. Through the parameter control system (such as energy, frequency, and force direction), multidimensional mechanical vibrational forces can be generated. This force can break down agglomerated coating materials into smaller powder particles, making them easier to interact with the surface of the workpiece. This helps to increase the contact area between the coating powder and the workpiece surface, thereby improving the uniformity of the surface coating.

[0047] Coupled Magnetic Field Module: This module mainly consists of an energized circuit and a permanent magnet (used to enhance the magnetic field force). By adjusting the circuit current parameters (here, the circuit current parameters are the same as those of the preceding RF induction power supply module), precise control of the magnetic field strength and direction can be achieved (specifically, by controlling the direction and intensity of the current). When designing the coupled magnetic field module, the energy transfer requirements and system stability requirements must be fully considered. This module utilizes the principle of magnetic field coupling to electromagnetically induction heat the coating material, exciting the powder into high-temperature plasma, thereby altering the powder surface activity. This facilitates the deagglomeration of the material and improves the powder application rate and uniformity in subsequent coating processes.

[0048] The multi-dimensional vibration ultrasonic module, radio frequency induction power supply module, and coupled magnetic field module are primarily designed for raw coating materials with poor leveling properties and clumping issues. When applied to powder raw materials in combination, these modules offer several advantages. Firstly, they enable powder de-clumping and surface property activation using a composite energy field, thereby reducing the probability of quality problems such as orange peel texture, color difference, and poor uniformity on the workpiece surface while achieving efficient coating. Secondly, by adjusting the parameters of the energy field, directional coating can be applied to the processed parts, allowing for coating adjustments to gaps or thicknesses.

[0049] Example 2:

[0050] In one embodiment, the sub-modules of the energy field module can be any one of a multidimensional vibration ultrasound module, a radio frequency induction power supply module, and a coupled magnetic field module.

[0051] like Figure 4 As shown, the energy field module's sub-module is only the RF induction power supply module. The energy field module uses an RF induction power supply with processing parameters such as 20W power and 500kHz RF. During operation, an alternating current is generated within the spray gun, causing corona discharge to the original powder inside the gun. This current generates heat as it flows through the conductor, leading to high-temperature ionization and creating a high-temperature plasma zone that continuously enhances the powder's surface activity. This ensures that the powder coating sprayed from the gun is in a highly surface-active ionized state. Due to electrostatic adsorption, the highly surface-active and uniformly dispersed powder coating is adsorbed onto the workpiece surface, thus achieving the high-efficiency spraying requirements and a uniform coating effect on the workpiece surface.

[0052] like Figure 5 As shown, the energy field module's sub-module is only coupled to the magnetic field module. This coupled magnetic field module uses processing parameters such as a magnetic induction intensity of 0.5T and a magnetic field strength of 20A / m, and works in conjunction with the existing power-carrying circuit in the electrostatic powder coating process. During operation, the magnetic field not only enhances the electrostatic or magnetic repulsion between particles by altering the charge distribution on the particle surface or generating magnetic dipoles, making the particles easier to disperse; but also, when the original powder particles are in the magnetic field, they are attracted by the magnetic force, moving or aligning along the magnetic field lines to reduce agglomeration. Simultaneously, under the influence of the current, electrochemical principles enhance the surface modification of the original powder particles, further increasing the uniformity of the powder coating.

[0053] like Figure 6As shown, the energy field module's sub-module is only a multi-dimensional vibration ultrasonic module, using a multi-dimensional ultrasonic vibration module with a vibration frequency of 30kHz and a power of 10W. During operation, on one hand, the multi-dimensional vibration, through mechanical vibration forces in multiple directions, can more comprehensively impact and disperse powder particles, reducing particle agglomeration. On the other hand, the mechanical force can activate the particle surface, making it more susceptible to electrostatic reactions or adsorption, thereby altering the surface properties to fully modify the powder particle surface and fully charge the powder, resulting in a uniform coating surface and improved powder application rate.

[0054] Example 3:

[0055] In one embodiment, the sub-modules in the energy field module can be a combination of any two of the following: a multi-dimensional vibration ultrasonic module, a radio frequency induction power supply module, and a coupling magnetic field module. This combination of energy field sub-modules can be used to adjust and modify different spray powder raw materials, agglomeration conditions, and workpiece coating conditions.

[0056] It can combine the energy of any two modules, such as the radio frequency induction power supply module and the coupled magnetic field module. During operation, the electrical energy generated in the radio frequency induction power supply not only ionizes the coating material at high temperature, but also converts a portion of the electrical energy into magnetic energy, which is stored in the magnetic field module. This further promotes the alignment of magnetic dipoles inside the magnet, fully releasing the magnetic energy. The combined energy (magnetic field + electric field) can be released in one step, efficiently and fully activating the surface of the coating powder, resulting in highly efficient electrostatic powder spraying.

[0057] Example 4:

[0058] In one embodiment, an energy field-assisted electrostatic spraying system can be as follows: Figure 2 As shown, it acts on the powder spray gun (and thus indirectly on the coating material); it can also be as follows: Figure 3 As shown, it is used to assist in the spraying of the workpiece; it can also be used in various equipment or processes involving the spraying process.

[0059] Example 5:

[0060] In one embodiment, an energy field-assisted electrostatic powder spraying system can dynamically adjust parameters such as voltage, current, and frequency in the radio frequency induction power module in real time according to different spraying processing trajectories, so as to ensure uniform powder spraying, good atomization effect, fully charged powder, and good workpiece coating effect.

[0061] This invention discloses a multi-energy field composite assisted spraying method that utilizes the coupling effect of a high-voltage electrostatic field generated by connecting the spray gun electrode and a high-voltage generator, an alternating magnetic field generated by a radio frequency induction power supply, and a multi-dimensional vibration ultrasonic field (as described here, the radio frequency induction power supply generates an alternating magnetic field, and the radio frequency induction power supply module and the coupling magnetic field module interact; however, as mentioned earlier, only one of the multi-dimensional vibration ultrasonic module, the radio frequency induction power supply module, and the coupling magnetic field module is also acceptable). This method deagglomerates the spraying material that has insufficient leveling properties and exhibits agglomeration, ensuring uniform powder output from the spray gun (coating material), good atomization effect, sufficient surface modification of powder particles, powder dispersion, and sufficient powder charging, resulting in a uniform coating surface on the workpiece and improved powder coverage. Simultaneously, this method allows adjustment of multi-energy field parameters and directional / uniform spraying capabilities, enabling more efficient and convenient processing of various difficult-to-machine parts.

[0062] A method for energy field-assisted electrostatic powder coating includes:

[0063] S1. Connect the spray gun electrode to the high voltage generator to generate a high voltage electrostatic field;

[0064] S2. The corona ionization generated by the high-voltage electrostatic field causes the original powder to collide with ionized air particles and become negatively charged.

[0065] S3. An external energy field module acts on the gun body or workpiece, making the original powder to be sprayed into a modified powder with a highly surface active ionized state.

[0066] S4. Under the combined action of high-voltage electrostatic field pressure and compressed air, the modified powder with high surface activity and uniform dispersion is adsorbed onto the workpiece surface, thereby achieving the high-efficiency spraying processing requirements of the workpiece.

[0067] Example 6:

[0068] This embodiment provides a method for multi-energy field composite assisted spraying, such as... Figure 2 As shown, it includes the following steps:

[0069] 1. To improve the uniformity and efficiency of spraying, according to the processing requirements of the workpiece to be sprayed, the auxiliary multidimensional ultrasonic vibration module and the coupled magnetic field module are placed coaxially on the spray gun, and an radio frequency induction power supply is installed to clamp the workpiece to be sprayed.

[0070] 2. Uses an RF induction power supply with processing parameters of 30W power and 150kHz RF, and employs neodymium iron boron magnets (maximum magnetic energy product BH = 300kJ / CM). 3 As a magnetic field module, a multi-dimensional ultrasonic vibration module with a vibration frequency of 50kHz and a power of 20W is used.

[0071] 3. During operation, an alternating electromagnetic field is generated inside the spray gun, causing corona discharge to the original powder inside the gun. Simultaneously, the mechanical force of ultrasonic vibration deagglomerates the original powder clumps, generating a high-temperature plasma zone that continuously enhances the surface activity of the powder. This ensures that the powder coating sprayed from the gun is in a highly surface-active ionized state. Due to electrostatic adsorption, the highly surface-active and uniformly dispersed powder coating is adsorbed onto the workpiece surface, thus achieving the high-efficiency spray coating requirements. The spray coating thickness is 8mm, and the surface roughness Ra is 10nm.

[0072] Example 7:

[0073] This embodiment provides a method for multi-energy field composite assisted spraying, such as... Figure 3 As shown, the difference from Example 1 is the location of the multi-energy field (which can be clamped on the workpiece hanger), and includes the following steps:

[0074] 1. Select a suitable processing position and clamp the workpiece to be coated onto the hanger. Place the multi-dimensional ultrasonic vibration module and the coupled magnetic field module coaxially on the workpiece hanger and install the radio frequency induction power supply. The powder spray gun is then clamped.

[0075] 2. Uses an RF induction power supply with processing parameters of 100W power and 300kHz RF, and uses ferrite magnets (maximum magnetic energy product BH = 500kJ / CM). 3 As a magnetic field module, a multi-dimensional ultrasonic vibration module with a vibration frequency of 500kHz and a power of 50W is used.

[0076] 3. When the auxiliary multi-dimensional ultrasonic vibration module, coupling magnetic field module and radio frequency induction power supply are started, the magnetic field adjusts the movement of the sprayed powder, and while assisting ultrasonic vibration, it adjusts the position of powder adhesion, etc. After processing, the sprayed workpiece also meets the material processing requirements.

[0077] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A system for energy field-assisted electrostatic powder spraying, characterized in that, The system includes a spray gun, a high-voltage generator, and an energy field module. The electrodes on the spray gun body are connected to the high-voltage generator to generate a high-voltage electrostatic field. Under the action of the high-voltage electrostatic field, the original powder particles collide with ionized air particles and become negatively charged. The sub-modules of the energy field module simultaneously act coaxially on the spray powder, making the original powder into a modified powder with a highly surface-active ionized state. Under the combined action of the high-voltage electrostatic field pressure and compressed air, the highly surface-active and uniformly dispersed modified powder is adsorbed onto the surface of the workpiece.

2. The energy field-assisted electrostatic powder spraying system according to claim 1, characterized in that, The energy field module has a sub-module called the radio frequency induction power supply module, which is used to generate high-temperature ionization energy of alternating current to modify the powder surface to different degrees.

3. The energy field-assisted electrostatic powder spraying system according to claim 1, characterized in that, The energy field module has a sub-module called the coupling magnetic field module, which is used to change the charge distribution on the surface of powder particles or generate magnetic dipoles. The coupling magnetic field module works in conjunction with the existing power circuit in the electrostatic powder spraying process to enhance the surface modification of the original powder particles under the action of the current using electrochemical principles.

4. The energy field-assisted electrostatic powder spraying system according to claim 1, characterized in that, The energy field module has a sub-module called the multidimensional vibration and ultrasound module. On the one hand, the multidimensional vibration and ultrasound module uses mechanical vibration forces in multiple directions to comprehensively impact and disperse powder particles, reducing the agglomeration of particles. On the other hand, the multidimensional vibration and ultrasound module uses mechanical force to activate the surface of powder particles, making the powder particles more likely to undergo electrostatic reactions or adsorption, thereby fully modifying the surface of the powder particles.

5. The energy field-assisted electrostatic powder spraying system according to claim 1, characterized in that, The energy field module has sub-modules that are combinations of any two of the following: multidimensional vibration and ultrasound module, radio frequency induction power supply module, and coupling magnetic field module, which generate a composite energy field to de-agglomerate the powder and activate its surface properties.

6. The energy field-assisted electrostatic powder spraying system according to claim 1, characterized in that, The energy field module includes a multidimensional vibration and ultrasound module, a radio frequency induction power supply module, and a coupling magnetic field module. The three sub-modules act coaxially on the sprayed powder raw material to generate a composite energy field that de-agglomerates the powder and activates its surface properties.

7. The energy field-assisted electrostatic powder coating system according to any one of claims 1-6, characterized in that, It can perform directional coating on the workpiece by adjusting the sub-module parameters of the energy field module.

8. The energy field-assisted electrostatic powder spraying system according to claim 1, characterized in that, The sub-modules of the energy field module act coaxially on the powder spray gun or the workpiece to be sprayed, assisting in electrostatic powder spraying.

9. A method for energy field-assisted electrostatic powder spraying, characterized in that, include: S1. Connect the spray gun electrode to the high voltage generator to generate a high voltage electrostatic field; S2. The corona ionization generated by the high-voltage electrostatic field causes the original powder to collide with ionized air particles and become negatively charged. S3, the sub-modules of the external energy field module act coaxially on the powder spray gun or the workpiece to be sprayed, so that the original powder to be sprayed becomes a modified powder with a highly surface active ionized state. S4. Under the combined action of high-voltage electrostatic field pressure and compressed air, the modified powder with high surface activity and uniform dispersion is adsorbed onto the workpiece surface, thereby achieving the high-efficiency spraying processing requirements of the workpiece.

10. The method for energy field-assisted electrostatic powder spraying according to claim 9, characterized in that, The energy field module has sub-modules that are one or more of the following: multidimensional vibration ultrasound module, radio frequency induction power supply module, and coupling magnetic field module.

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