Method for improving uniformity of paint film of enameled wire

Abstract

The invention belongs to the technical field of enameled wire manufacturing, and particularly relates to a method for improving the uniformity of an enameled wire paint film, and the method comprises the steps: coating a copper wire with a first paint liquid to form a first paint film when a to-be-processed signal of the copper wire is detected; controlling the polarization tank to polarize the second paint liquid in the polarization tank; after the polarization tank performs polarization for a first time length, controlling the paint liquid spray head to spray second paint liquid on the copper wire, and controlling the interior of the spraying bin to maintain a first temperature; the spraying progress of the second paint liquid is detected; when the spraying progress is 100%, the electric field device is controlled to be started, and the second paint liquid is subjected to electric field force; when the spraying progress is 100%, the first power source is controlled to be turned on, and the copper wire is charged; and the temperature of the spraying bin is controlled to be reduced to the room temperature, and the second paint liquid forms a second paint film. According to the method, paint liquid is charged, an electric field is generated to counteract the gravity of the paint liquid, copper wires are charged oppositely, the copper wires and the paint liquid attract each other, and the purpose of improving the uniformity of a paint film of the enameled wire is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of enameled wire manufacturing, and in particular to a method for improving the uniformity of enameled wire paint film. Background Art

[0002] Enameled wire refers to a metal wire coated with a thin layer of insulating paint on the surface. It is widely used as a conductive material in the windings of various motors, transformers, electrical equipment, electronic equipment and electromagnetic coils.

[0003] The enameled wire processing process includes the painting process. During the painting process, the paint liquid is heated to melt, and then the paint liquid is wrapped around the copper wire by relying on its surface tension. However, due to gravity, the paint liquid cannot be completely and evenly coated on the surface of the copper wire. Existing methods for improving the uniformity of the paint film include applying glue in small amounts multiple times, rotating the copper wire at a certain angular velocity, felt painting method, etc. None of the above methods can solve the problem of gravity influence very well. Summary of the invention

[0004] The embodiment of the present application provides a method for improving the uniformity of the paint film of the enameled wire, which can solve the problem that the paint liquid is affected by gravity and the uniformity of the paint film of the enameled wire is reduced.

[0005] In a first aspect, an embodiment of the present application provides a method for improving the uniformity of a paint film of an enameled wire, which is applied to a paint film coating device, and the method comprises:

[0006] When a signal for processing the copper wire is detected, the coating device is controlled to start; wherein the coating device refers to a device for coating the first paint liquid on the copper wire and forming a first paint film;

[0007] Detecting the carrying capacity of the polarization tank, and when the carrying capacity is greater than a preset threshold, controlling the polarization tank to polarize; wherein the polarization tank refers to a container for storing a fixed volume of the second paint liquid, and the polarization tank is capable of polarizing the second paint liquid therein, and the carrying capacity refers to the amount of the second paint liquid carried in the polarization tank;

[0008] After the polarization tank is polarized for a first time, the paint liquid nozzle is controlled to spray the second paint liquid on the copper wire, and the first temperature is maintained in the spraying chamber, and the time is set to a second time; wherein the spraying chamber refers to a closed space for spraying the paint liquid on the copper wire;

[0009] Detecting the spraying progress of the second paint liquid; wherein the spraying progress refers to the progress of the step of spraying the second paint liquid on the copper wire;

[0010] When the spraying progress is 100%, the electric field device is controlled to start; wherein the electric field device is used to generate a first electric field at the copper wire, the first electric field is used to generate an electric field force on the second paint liquid, and the electric field force on the second paint liquid is opposite to the gravity;

[0011] When the spraying progress is 100%, the first power source is controlled to be turned on; wherein the first power source is electrically connected to the copper wire, and the first power source makes the copper wire carry a charge, and the charge carried is opposite to the charge carried by the second paint liquid;

[0012] When the second time period is equal to the preset time period, the temperature of the spraying chamber is controlled to be lowered to room temperature so that the second paint liquid forms a second paint film.

[0013] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0014] In the method for improving the uniformity of the paint film of the enameled wire provided by the present application, first, when a signal for the copper wire to be processed is detected, the coating device is controlled to start, and the coating device coats the first paint liquid on the copper wire to form a first paint film. In this step, the first paint film is coated on the copper wire. The function of the first paint film is to isolate the copper wire and the second paint liquid, which is conducive to delaying the charge balance between the copper wire and the second paint liquid in the subsequent steps. Secondly, the carrying capacity of the polarization tank is detected, and when the carrying capacity is greater than the preset threshold, the polarization tank is controlled to be polarized. In this step, the second paint liquid is polarized, and the second paint liquid flowing out of the outlet of the polarization tank is charged, which can make the second paint liquid be affected by the electric field force. Then, the paint liquid nozzle is controlled to spray the second paint liquid on the copper wire, and the first temperature is maintained in the spraying chamber. In this step, the charged second paint liquid is sprayed on the copper wire, and the first paint film exists between the copper wire and the second paint liquid. Then, the electric field device is controlled to start, and the electric field device generates a first electric field at the copper wire. In this step, the first electric field is generated so that the polarized second paint liquid is subjected to an electric field force, and the electric field force is opposite to gravity, which can offset the influence of gravity to improve the uniformity of the paint film of the enameled wire. Subsequently, the first power supply is controlled to be turned on. In this step, the first power supply is electrically connected to the copper wire. The first power supply can make the power supply charged. The polarity of the charge carried by the copper wire is opposite to the polarity of the charge carried by the second paint liquid, which can make the second paint liquid and the copper wire attract each other to improve the uniformity of the paint film of the enameled wire. Finally, the temperature of the spraying chamber is controlled to be lowered to room temperature, and the second paint liquid forms a second paint film. In this step, the second paint liquid is cooled to solidify into a second paint film, thereby realizing a method for improving the uniformity of the paint film of the enameled wire. In this method, the paint liquid is charged by polarizing the paint liquid, and then an electric field is generated to offset the gravity of the paint liquid, and the copper wire is charged with opposite charges, so that the copper wire and the paint liquid attract each other, thereby achieving the purpose of improving the uniformity of the paint film of the enameled wire.

[0015] In a second aspect, an embodiment of the present application provides a paint film coating device, which is applied to a paint film coating device, and the device includes:

[0016] A first paint film forming unit is used to apply a first paint liquid on the copper wire and form a first paint film when a signal of the copper wire to be processed is detected;

[0017] A polarization unit, used for polarizing the second paint liquid in the polarization tank;

[0018] A spraying unit, used for spraying the second paint liquid flowing out of the polarization tank on the copper wire;

[0019] A temperature control unit, used for controlling the spray chamber to maintain a first temperature;

[0020] An electric field generating unit, used for generating a first electric field at the copper wire;

[0021] a first power supply unit, used to charge the copper wire;

[0022] The temperature control unit is also used to control the temperature of the spraying chamber to drop to room temperature so that the second paint liquid forms a second paint film.

[0023] In a third aspect, an embodiment of the present application provides a paint film coating device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the methods described in the first aspect when executing the computer program.

[0024] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the first aspects above is implemented.

[0025] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on a paint film coating device, the paint film coating device executes the method for improving the uniformity of the paint film of the enameled wire as described in any one of the first aspects above.

[0026] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1It is a schematic flow chart of a method for improving the uniformity of the paint film of an enameled wire provided in one embodiment of the present application;

[0029] Figure 2 2 is a schematic structural diagram of a first polarization tank in step S210 of a method for improving the uniformity of an enameled wire paint film provided in an embodiment of the present application;

[0030] Figure 3 It is a structural schematic diagram of the first charge supplement point and the first polarization tank in step S211 of the method for improving the uniformity of the paint film of the enameled wire provided in one embodiment of the present application;

[0031] Figure 4 2 is a schematic diagram of the structure of the second polarization tank in step S220 of the method for improving the uniformity of the paint film of the enameled wire provided in one embodiment of the present application;

[0032] Figure 5 1 is a schematic structural diagram of an electric field device in step S510 of a method for improving the uniformity of an enameled wire paint film provided in an embodiment of the present application;

[0033] Figure 6 It is a schematic diagram of the structure of the first paint liquid spray head, the second paint liquid spray head and the second polarization tank in step S221 of the method for improving the uniformity of the paint film of the enameled wire provided in one embodiment of the present application;

[0034] Figure 7 It is a structural schematic diagram of the first filter screen and the first polarization tank in step S810 of the method for improving the uniformity of the paint film of the enameled wire provided in one embodiment of the present application;

[0035] Figure 8 is a schematic structural diagram of a paint film coating device provided in an embodiment of the present application;

[0036] Fig. 9 It is a schematic diagram of the structure of the paint film coating equipment provided in the embodiment of the present application. DETAILED DESCRIPTION

[0037] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0038] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0039] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0040] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0041] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0042] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0043] In the related art, the enameled wire processing process includes a painting process. During the painting process, the paint liquid is heated to melt, and then the paint liquid is wrapped around the copper wire by relying on its surface tension. However, due to gravity, the paint liquid cannot be completely and evenly coated on the surface of the copper wire. Existing methods for improving the uniformity of the paint film include applying glue in small amounts and multiple times, rotating the copper wire at a certain angular velocity, felt painting method, etc. The above methods have their own advantages and disadvantages. The method of applying glue in small amounts and multiple times reduces the mass of a single paint application to reduce the influence of gravity, but it will greatly extend the processing time. The method of rotating the copper wire is simple and easy to implement but the effect is not good. The felt painting method is stable and efficient but requires frequent replacement of the felt. The above methods cannot solve the problem of gravity influence very well.

[0044] To solve the above problems, the embodiment of the present application provides a method for improving the uniformity of the paint film of the enameled wire. In this method, first, when the copper wire to be processed signal is detected, the coating device is controlled to start, and the coating device coats the first paint liquid on the copper wire to form a first paint film. In this step, the first paint film is coated on the copper wire. The function of the first paint film is to isolate the copper wire and the second paint liquid, which is conducive to delaying the charge balance between the copper wire and the second paint liquid in the subsequent steps. Secondly, the carrying capacity of the polarization tank is detected, and when the carrying capacity is greater than the preset threshold, the polarization tank is controlled to be polarized. In this step, the second paint liquid is polarized, and the second paint liquid flowing out of the outlet of the polarization tank is charged, which can make the second paint liquid be affected by the electric field force. Then, the paint liquid nozzle is controlled to spray the second paint liquid on the copper wire, and the first temperature is maintained in the spraying chamber. In this step, the charged second paint liquid is sprayed on the copper wire, and there is a first paint film between the copper wire and the second paint liquid. Then, the electric field device is controlled to start, and the electric field device generates a first electric field at the copper wire. In this step, the first electric field is generated so that the polarized second paint liquid is subjected to an electric field force, and the electric field force is opposite to gravity, which can offset the influence of gravity to improve the uniformity of the paint film of the enameled wire. Subsequently, the first power supply is controlled to be turned on. In this step, the first power supply is electrically connected to the copper wire. The first power supply can make the power supply charged. The polarity of the charge carried by the copper wire is opposite to the polarity of the charge carried by the second paint liquid, which can make the second paint liquid and the copper wire attract each other to improve the uniformity of the paint film of the enameled wire. Finally, the temperature of the spraying chamber is controlled to be lowered to room temperature, and the second paint liquid forms a second paint film. In this step, the second paint liquid is cooled to solidify into a second paint film, thereby realizing a method for improving the uniformity of the paint film of the enameled wire. In this method, the paint liquid is charged by polarizing the paint liquid, and then an electric field is generated to offset the gravity of the paint liquid, and the copper wire is charged with opposite charges, so that the copper wire and the paint liquid attract each other, thereby achieving the purpose of improving the uniformity of the paint film of the enameled wire.

[0045] The method for improving the uniformity of the paint film of the enameled wire provided in the embodiment of the present application can be applied to the paint film coating equipment. In this case, the paint film coating equipment is the executor of the method for improving the uniformity of the paint film of the enameled wire provided in the embodiment of the present application. The embodiment of the present application does not impose any restrictions on the specific type of the paint film coating equipment.

[0046] For example, the paint film coating equipment may include a coating device, a polarization device, a spraying device, a temperature control device, an electric field device, a power supply, and a control device. The coating device may be an electrostatic tank, the polarization device may be various electrostatic sensors, the spraying device may be a paint spray head, the temperature control device may be various temperature control systems and equipment, the electric field device may be two electrode plates, and the power supply may be various power supplies. The control device may control the coating device to form a first paint film on the copper wire, may control the polarization device to polarize the second paint liquid, may control the spraying device to spray the paint liquid on the copper wire, may control the temperature control device to maintain different temperatures in the spraying chamber, may control the electric field device to generate electric fields of different sizes and directions, and may control the power supply to generate different voltages.

[0047] The control device can be a single chip microcomputer, a mobile phone, a tablet computer, a notebook computer, a desktop computer, a computer, a laptop computer, or a handheld computing device.

[0048] In order to better understand the method for improving the uniformity of the paint film of the enameled wire provided in the embodiment of the present application, the specific implementation process of the method for improving the uniformity of the paint film of the enameled wire provided in the embodiment of the present application is exemplarily introduced below.

[0049] Figure 1 A schematic flow chart of a method for improving the uniformity of an enameled wire paint film provided in an embodiment of the present application is shown. The method for improving the uniformity of an enameled wire paint film includes:

[0050] S100, when a signal indicating that the copper wire is to be processed is detected, the coating device is controlled to start; wherein the coating device refers to a device for coating a first paint liquid on the copper wire and forming a first paint film.

[0051] It can be understood that a distance sensor can be placed at the processing position of the copper wire, and the distance sensor can be used to detect whether there is a copper wire to be processed. When it is detected that there is a copper wire to be processed, a copper wire processing signal is sent. The distance sensor can be an ultrasonic sensor, a laser sensor, etc.; when the copper wire processing signal is detected, the coating device is controlled to start, and the coating device is used to coat the first paint liquid on the copper wire and form a first paint film. The function of the first paint film is to isolate the copper wire. The method of coating the first paint liquid can be various commonly used painting methods, such as felt painting method, and the first paint liquid can also be coated by electrophoretic painting method. The electrophoretic painting method refers to coating a dense paint film on a conductive medium by electroplating. The disadvantage of the electrophoretic painting method is that it is limited by the special electrophoretic paint and cannot meet the performance requirements of the paint film of the enameled wire, but it can be used as the first paint film to isolate the copper wire.

[0052] In this way, the copper wire is isolated by the first paint film, which is beneficial to the subsequent step of coating the second paint film.

[0053] In a possible implementation, in step S100, controlling the coating device to start includes:

[0054] S110, after the coating device is started and the copper wire is detected to be in the electrophoretic bath, the electrophoretic paint type of the first paint liquid is detected, wherein the electrophoretic bath contains an aqueous solution of the first paint liquid, and the first paint liquid is an anodic or cathodic electrophoretic paint.

[0055] It can be understood that when the electrophoretic painting method is adopted, the coating device can be an electrophoretic painting device. First, the copper wire is immersed in an aqueous solution of the first paint liquid. The first paint liquid can be various anodic or cathodic electrophoretic paints. Anodic electrophoretic paint refers to electrophoretic paint whose electrode of the coated workpiece is the anode. Cathodic electrophoretic paint refers to electrophoretic paint whose electrode of the coated workpiece is the cathode. Different types of electrophoretic paints need to be used with different concentrations. The electrophoretic paint category of the first paint liquid can be determined by detecting the pH value of the aqueous solution in the electrophoretic pool. If the first paint liquid is anodic electrophoretic paint, the first paint liquid is anion after hydrolysis, and the pH value of the aqueous solution in the electrophoretic pool is less than 7. If the first paint liquid is cathodic electrophoretic paint, the pH value of the aqueous solution in the electrophoretic pool is greater than 7. The pH value of the aqueous solution in the electrophoretic pool can be detected by a pH value detector.

[0056] With such arrangement, the electrophoretic paint category of the first paint solution can be quickly determined to complete the preparation work for the electrophoretic painting method.

[0057] S120, if the first paint liquid is anodic electrophoretic paint, control the first power supply to use the copper wire as an anode to perform electrophoretic painting to form a first paint film.

[0058] It can be understood that if the first paint liquid is anodic electrophoretic paint, an electrode and a copper wire are set in the electrophoretic pool (both electrodes are immersed in the solution), and power is turned on to make the copper wire act as the anode and the electrode as the cathode for electrophoretic painting. After a preset time, a first paint film is formed on the copper wire, and air-drying and other processing steps can also be performed.

[0059] Such arrangement shows the steps of electrophoretically coating the first paint film when the first paint liquid is anodic electrophoretic paint.

[0060] S130, if the first paint liquid is cathode electrophoretic paint, control the first power supply to use the copper wire as a cathode to perform electrophoretic painting to form a first paint film.

[0061] It can be understood that, similar to step S120, if the first paint liquid is cathodic electrophoretic paint, an electrode and a copper wire are set in the electrophoretic pool (both electrodes are immersed in the solution), and power is turned on to make the copper wire act as the cathode and the electrode as the anode for electrophoretic painting. After a preset time, a first paint film is formed on the copper wire, and air-drying and other processing steps can also be performed.

[0062] Such arrangement shows the step of electrophoretically coating the first paint film when the first paint liquid is cathodic electrophoretic paint.

[0063] S200, detecting the carrying capacity of the polarization tank, and when the carrying capacity is greater than a preset threshold, controlling the polarization tank to polarize; wherein the polarization tank refers to a container for storing a fixed volume of the second paint liquid, and the carrying capacity refers to the amount of the second paint liquid carried in the polarization tank.

[0064] It can be understood that the carrying capacity of the polarization tank is first detected. The carrying capacity can be detected by a laser sensor. When the polarization tank is filled with the second paint liquid, the second paint liquid can be polarized by generating an electric field through electrostatic induction. Water, ethanol and other evaporable high dielectric constant solutes can be added to the second paint liquid to increase the polarization rate of the second paint liquid. The polarization process requires a fixed time so that the second paint liquid flowing out of the polarization tank can carry a fixed charge (the fixed charge refers to a charge within a specific range), and the polarization tank can replenish the second paint liquid while flowing out the second paint liquid. The second paint liquid outflow rate of the polarization tank = the capacity of the polarization tank / the duration of the polarization process.

[0065] With such an arrangement, electrostatic induction can more stably change the charge distribution of the second paint liquid than direct electrification, and make the second paint liquid charged without destroying the chemical structure of the second paint liquid.

[0066] In a possible implementation, in step S200, the polarization tank includes an inlet, an outlet, and a first electrode group, the inlet and the outlet are respectively located at the upper end and the lower end of the polarization tank, and the first electrode group is distributed at the upper end and the lower end of the polarization tank; controlling the polarization tank to polarize the second paint liquid in the polarization tank includes:

[0067] S210, start the first electrode group in the polarization tank and wait for a first time period, wherein the first electrode group is used to polarize the paint liquid in the polarization tank by electrostatic induction.

[0068] It can be understood that the inlet and outlet of the polarization tank in this possible implementation are respectively located at the upper and lower ends of the polarization tank, which is called the first polarization tank. Therefore, the polarization direction of the first polarization tank is vertical. The first electrode group is distributed at the upper and lower ends of the first polarization tank, and waits for a first time to complete the polarization of the fully loaded second paint liquid in the first polarization tank, and then the second paint liquid is replenished and flows out. The electrode group can be composed of multiple electrode plates.

[0069] For example, Figure 2 The example first polarization tank cross-sectional view shown in Figure 2 The first polarization tank shown has two openings, namely, the inlet 21 and the outlet 22 of the first polarization tank. The first electrode group generates a vertical electric field in the first polarization tank. The image should not be regarded as limiting the present method. The shape of the first polarization tank may not be cylindrical, the opening of the first polarization tank may not be circular, and the first polarization tank and the opening may also be of other sizes.

[0070] Such an arrangement can ensure that all the outflowing second paint liquids carry a charge amount within a fixed range.

[0071] Optionally, in step S210, the method further includes:

[0072] S211, the polarization tank includes a first charge replenishment point, the first charge replenishment point is used to replenish the charge carried away by the second paint liquid flowing out of the polarization tank, and the first charge replenishment point is electrically connected to the zero potential point.

[0073] It can be understood that, at the beginning, the second paint liquid in the first polarization tank is generally neutral, but as the outflow of the second paint liquid with positive or negative charge increases, the second paint liquid in the first polarization tank will deviate from neutrality as a whole, which will cause the amount of charge carried by the outflowing second paint liquid to gradually decrease. Therefore, a first charge replenishment point can be set in the first polarization tank to make the second paint liquid in the first polarization tank generally neutral. The first charge replenishment point can be a cylindrical or mesh shape with no upper and lower faces, etc., with a large specific surface area (specific surface area = area / volume) to contact a larger area of ​​the second paint liquid. The first charge replenishment point can be various metal conductors, such as copper. The first charge replenishment point can be set in the upper half or top of the first polarization tank. The first charge replenishment point can be grounded to stabilize the replenishment of charge.

[0074] For example, Figure 3 A cross-sectional view of the first charge replenishment point and the first polarization tank is shown, Figure 3 The figure shows the inlet 21, outlet 22 and first charge replenishment point 31 of the first polarization tank. The first charge replenishment point 31 is a cylindrical metal plate without upper and lower surfaces. The first charge replenishment point 31 is grounded and can make the second paint liquid it contacts neutral.

[0075] With such an arrangement, the second paint liquid carrying a charge amount within a fixed range can be stably flowed out.

[0076] In a possible implementation, in step S200, the polarization tank includes an inlet, a first outlet, a second outlet, and a second electrode group, the inlet is located at the upper end of the polarization tank, the first outlet and the second outlet are respectively located at the left end and the right end of the polarization tank, and the second electrode group is distributed at the left end and the right end of the polarization tank; controlling the polarization tank to polarize the second paint liquid in the polarization tank includes:

[0077] S220, start the second electrode group in the polarization tank and wait for a second time period. The second electrode group is used to polarize the paint liquid in the polarization tank by electrostatic induction, and the second electrode group is distributed at the left and right ends of the polarization tank.

[0078] It can be understood that the polarization tank in this possible implementation includes an inlet, a first outlet, a second outlet and a second electrode group, which is called a second polarization tank. The inlet is located at the upper end of the second polarization tank, and the first outlet and the second outlet are respectively located at the left and right ends of the second polarization tank. Therefore, the polarization direction of the horizontal second polarization tank is horizontal. The second electrode group is distributed at the left and right ends of the second polarization tank, and the second time period is waited for to complete the polarization of the second paint liquid fully loaded in the second polarization tank, and then the second paint liquid is replenished and flows out.

[0079] For example, Figure 4 The example second polarization tank cross-sectional view shown in Figure 4 The second polarization tank shown has three openings, namely, the inlet 41, the first outlet 42 and the second outlet 43 of the second polarization tank. The second electrode group generates a horizontal electric field in the second polarization tank. The image should not be regarded as limiting the method. The shape of the second polarization tank may not be cylindrical, the opening of the second polarization tank may not be circular, and the second polarization tank and the opening may also be of other sizes.

[0080] Such an arrangement enables the second paint liquid with charge to flow out from both the left and right ends of the second polarization tank, and the second paint liquid in the second polarization tank is generally always neutral, without the need for a charge replenishment point. This allows two copper wires to be processed simultaneously to improve efficiency and also simplifies the structure.

[0081] S300, after the polarization tank is polarized for a first time, the paint liquid nozzle is controlled to spray a second paint liquid on the copper wire, and the first temperature is maintained in the spray chamber, and the time is set to a second time. The spray chamber refers to a closed space for spraying paint liquid on the copper wire.

[0082] It can be understood that after the polarization tank is polarized for the first period of time, the outflowing second paint liquid will carry a stable charge. After the charged second paint liquid is sprayed on the copper wire (a first paint film is separated between the copper wire and the second paint liquid, which can temporarily slow down the rate at which the charge of the second paint liquid is lost to the copper wire), the temperature in the spraying chamber is controlled at a first temperature. The first temperature may be a temperature greater than the melting point of the second paint liquid. High temperature may reduce the viscosity of the second paint liquid. At this time, the second paint liquid will wrap the copper wire under the action of surface tension, and the copper wire may be rotated to make the second paint liquid more evenly coated on the surface of the copper wire. If solutes such as water and ethanol are added to the second paint liquid, the solutes will gradually evaporate at this stage, and the time for maintaining the first temperature will be recorded as the second period of time.

[0083] With such an arrangement, the second paint liquid can be sprayed onto the copper wire more evenly, which is beneficial to subsequently improving the uniformity of the paint film.

[0084] S400, detecting the spraying progress of the second paint liquid; wherein the spraying progress refers to the progress of the step of spraying the second paint liquid on the copper wire.

[0085] It can be understood that a fixed spraying time can be set, and the spraying time is used as the spraying progress of the second paint liquid. When the spraying time reaches the preset spraying time, the spraying progress is 100%.

[0086] With such arrangement, the spraying progress of the second paint liquid can be easily obtained.

[0087] S500, when the spraying progress is 100%, the electric field device is controlled to start; wherein the electric field device is used to generate a first electric field at the copper wire, the first electric field is used to generate an electric field force on the second paint liquid, and the electric field force on the second paint liquid is opposite to gravity.

[0088] It can be understood that the second paint liquid sprayed on the copper wire will be affected by gravity and cause dripping uneven paint liquid to be generated under the copper wire. Therefore, the electric field device is controlled to generate a first electric field at the copper wire so that the electric field force on the second paint liquid is opposite to the gravity; and the charge carried by the second paint liquid is not fixed, and the charge carried by the second paint liquid will flow out over time. Therefore, the charge carried by the second paint liquid at the first temperature can be detected (the charge carried by the second paint liquid can be measured by an electrostatic tester) to obtain a charge-time curve of the second paint liquid per unit length of the copper wire, and then the mass m of the second paint liquid per unit length of the copper wire is detected, and the E-time curve is calculated according to mg=Eq (g is the acceleration of gravity, E is the electric field strength of the first electric field, and q is the charge of the second paint liquid per unit length of the copper wire), and the electric field strength of the first electric field is adjusted along the E-time curve.

[0089] Such an arrangement can reduce or even offset the influence of gravity, thereby improving the uniformity of coating the second paint liquid on the copper wire.

[0090] In a possible implementation, in step S500, the electric field device includes a first electrode plate and a second electrode plate symmetrically placed in the upper and lower directions of the copper wire; controlling the electric field device to start includes:

[0091] S510, turning on a power source connecting the first electrode plate and the second electrode plate to generate a first electric field.

[0092] It can be understood that in this possible implementation, the first electrode plate and the second electrode plate are placed symmetrically in the upper and lower directions of the copper wire, the first electrode plate and the second electrode plate are electrically connected to opposite electrodes, and the first electrode plate and the second electrode plate are parallel, so a uniform electric field can be generated between the first electrode plate and the second electrode plate, and V can be adjusted according to E=V / d (V refers to the voltage difference between the first electrode plate and the second electrode plate, and d refers to the distance between the first electrode plate and the second electrode plate) to control the size of E.

[0093] For example, Figure 5 The schematic diagram of the electric field device shown in FIG. Figure 5 The electric field device shown includes a first electrode plate 51, a second electrode plate 52, a copper wire 53 and a support frame 54. A first electric field is generated between the first electrode plate 51 and the second electrode plate 52, the copper wire 53 is located in the first electric field, and the support frame 54 is used to fix the first electrode plate 51 and the second electrode plate 52.

[0094] With such an arrangement, the electric field strength of the first electric field can be quickly adjusted.

[0095] S600, when the spraying progress is 100%, control the first power supply to turn on; wherein the first power supply is electrically connected to the copper wire, and the first power supply makes the copper wire carry a charge, and the charge carried is opposite to the charge carried by the second paint liquid.

[0096] It can be understood that if the second paint liquid carries a positive charge, the first power supply makes the copper wire a cathode, and if the second paint liquid carries a negative charge, the first power supply makes the copper wire an anode. At this time, the second paint liquid and the copper wire can attract each other (and the first paint film is separated from the second paint liquid and the copper wire), so that the second paint liquid can be more evenly coated on the copper wire.

[0097] Such an arrangement can improve the uniformity of the paint film of the enameled wire.

[0098] S700, when the second time length is equal to the preset time length, controlling the temperature of the spray chamber to drop to room temperature so that the second paint liquid forms a second paint film.

[0099] It can be understood that after the second paint liquid is evenly coated on the copper wire and the first temperature is maintained for a preset time, the temperature of the spraying chamber is lowered to room temperature to solidify the second paint liquid into a second paint film. Because as the solute in the second paint liquid gradually evaporates, it will take away part of the charge, causing the effect of this method on improving the uniformity of the paint film to weaken, so the preset time for the spraying chamber to maintain the first temperature should not be too long, and can be maintained within the range of 2 to 5s. The spraying chamber can also maintain the first temperature all the time, so that the copper wire after painting moves to the spraying chamber at a uniform speed, and the copper wire after painting moves at a uniform speed in the spraying chamber, and moves out of the spraying chamber after a period of time, and the time the copper wire after painting is in the spraying chamber is equal to the preset time.

[0100] With such arrangement, the second paint liquid solidifies to obtain a second paint film, which can effectively improve the uniformity of the paint film.

[0101] Optionally, in step S220, the first flow outlet is connected to a first paint liquid nozzle, and the second flow outlet is connected to a second paint liquid nozzle, and the method further includes:

[0102] S221, control the first paint liquid nozzle to spray the first copper wire, and control the second paint liquid nozzle to spray the second copper wire; wherein the electric field where the first copper wire is located and the electric field where the second copper wire is located are equal in magnitude and opposite in direction, and the voltage values ​​of the power supply connected to the first copper wire and the power supply connected to the second copper wire are V and -V respectively, and V is a real number greater than zero.

[0103] It can be understood that the second polarization tank in this possible implementation has two flow outlets, the first flow outlet is connected to the first paint liquid nozzle, and the second flow outlet is connected to the second paint liquid nozzle, so as to process two copper wires at the same time, the first paint liquid nozzle and the second paint liquid nozzle respectively spray the first copper wire and the second copper wire, and the charges carried by the second paint liquids sprayed by the first paint liquid nozzle and the second paint liquid nozzle are equal in charge amount and opposite in polarity, so the electric fields of the first copper wire and the second copper wire are equal in magnitude and opposite in polarity, and the voltage values ​​of the power supply connected to the first copper wire and the power supply connected to the second copper wire are also equal in magnitude and opposite in polarity.

[0104] For example, Figure 6 The cross-sectional view of the second polarization tank, the first paint liquid nozzle and the second paint liquid nozzle is shown. The first paint liquid nozzle 61 can be embedded and fixed in the first flow outlet 42, and the second paint liquid nozzle 62 can be embedded and fixed in the second flow outlet 43. The first paint liquid nozzle 61 and the second paint liquid nozzle 62 can spray out equal amounts of second paint liquids with opposite polarity charges.

[0105] In this way, two copper wire processing lines are set up.

[0106] Optionally, the method further includes:

[0107] S810, a first filter screen is provided at the inlet of the polarization tank, and the first filter screen is used to allow the newly added second paint liquid to flow smoothly into the polarization tank.

[0108] It can be understood that the second paint liquid at different positions in the polarization tank has different charge distributions. If the inflow rate of the newly added second paint liquid is too fast, it will drive the second paint liquid in the polarization tank to flow, thereby causing unnecessary changes in the charge distribution of the second paint liquid, resulting in poor polarization effect of the polarization tank. Therefore, a first filter is set at the inlet of the polarization tank to slow down the inflow rate of the newly added second paint liquid.

[0109] Such an arrangement can optimize the polarization effect of the polarization tank.

[0110] For example, Figure 7 The cross-sectional view of the first filter screen and the first polarization tank shown in FIG. 1 includes a first filter screen 71 and an outlet 22. The first filter screen 71 is embedded and fixed at the inlet of the first polarization tank. The first filter screen 71 is suitable for different polarization tanks. For example, the polarization tank can also be Figure 4 A second polarization tank of the style shown.

[0111] Optionally, a first sensor is provided in the polarization tank, and the first sensor is used to detect the liquid level of the second paint liquid in the polarization tank. The method includes:

[0112] S820, detecting a first height sent by a first sensor.

[0113] It can be understood that the first sensor can be various liquid level detection sensors, such as ultrasonic liquid level sensors, etc. The first sensor is set at a fixed position in the polarization tank to obtain a stable liquid level height of the second paint liquid.

[0114] With such arrangement, the liquid level of the second paint liquid can be obtained at all times.

[0115] S830, when the first height is less than the first threshold, controlling the paint liquid replenishing device to replenish the second paint liquid. The paint liquid replenishing device is used to replenish the second paint liquid into the polarization tank.

[0116] It can be understood that the paint liquid replenishing device can be an electronic valve. When the first height is less than the first threshold, the electronic valve opens and the second paint liquid flows into the polarization tank.

[0117] With such arrangement, the second paint liquid in the polarization tank can be replenished in time.

[0118] S840, when the first height is greater than the second threshold, controlling the replenishing device to stop replenishing the second paint liquid.

[0119] It can be understood that because the second paint liquid has a certain viscosity, the supplemented second paint liquid will present an arch shape, so the first height is the highest height of the second paint liquid. When the first height is greater than the second threshold, the electronic valve is closed.

[0120] Such an arrangement can maintain the second paint liquid in the polarization tank within a range.

[0121] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0122] Corresponding to the method for improving the uniformity of the paint film of the enameled wire described in the above embodiment, the embodiment of the present application also provides a paint film coating device, and each module of the device can implement each step of the method for improving the uniformity of the paint film of the enameled wire. Figure 8 A structural block diagram of a paint film coating device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0123] Reference Figure 8 , the device comprises:

[0124] A first paint film forming unit is used to apply a first paint liquid on the copper wire and form a first paint film when a signal of the copper wire to be processed is detected;

[0125] A polarization unit, used for polarizing the second paint liquid in the polarization tank;

[0126] A spraying unit, used for spraying the second paint liquid flowing out of the polarization tank on the copper wire;

[0127] A temperature control unit, used for controlling the spray chamber to maintain a first temperature;

[0128] An electric field generating unit, used for generating a first electric field at the copper wire;

[0129] a first power supply unit, used to charge the copper wire;

[0130] The temperature control unit is also used to control the temperature of the spraying chamber to drop to room temperature so that the second paint liquid forms a second paint film.

[0131] It should be noted that the information interaction, execution process and other contents between the above-mentioned units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0132] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units is used as an example for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units as needed, that is, the internal structure of the device can be divided into different functional units to complete all or part of the functions described above. The functional units in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0133] The present application also provides a paint film coating device, which may include a coating device, a polarization device, a spraying device, a temperature control device, an electric field device, a power supply, and a control device. The coating device may be an electrostatic tank, the polarization device may be various electrostatic sensors, the spraying device may be a paint liquid spray head, the temperature control device may be various temperature control systems and devices, the electric field device may be two electrode plates, and the power supply may be various power supplies. Fig. 9 This is a schematic diagram of the structure of a paint film coating device provided in one embodiment of the present application. Fig. 9As shown, the control device 8 of the paint film coating equipment of this embodiment includes: at least one processor 80 ( Fig. 9 Only one is shown), at least one memory 81 ( Fig. 9 Only one is shown in the figure) and a computer program 82 stored in the at least one memory 81 and executable on the at least one processor 80. When the processor 80 executes the computer program 82, the control device 8 of the paint film coating equipment implements the steps in any of the above-mentioned method embodiments for improving the uniformity of the paint film of the enameled wire, or the control device 8 of the paint film coating equipment implements the functions of each unit in the above-mentioned device embodiments.

[0134] Exemplarily, the computer program 82 may be divided into one or more units, which are stored in the memory 81 and executed by the processor 80 to complete the present application. The one or more units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 82 in the control device 8 of the paint film coating device.

[0135] The control device 8 of the paint film coating device can be a single chip microcomputer, a microprocessor, a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a desktop computer, a smart screen, a smart TV, or a handheld device with a wireless communication function. The control device 8 of the paint film coating device can include, but is not limited to, a processor 80 and a memory 81. Those skilled in the art can understand that Fig. 9 It is only an example of the control device 8 of the paint film coating equipment and does not constitute a limitation on the control device 8 of the paint film coating equipment. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, for example, it may also include input and output devices, network access devices, buses, etc.

[0136] The processor 80 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0137] In some embodiments, the memory 81 may be an internal storage unit of the control device 8 of the paint film coating device, such as a hard disk or memory of the control device 8 of the paint film coating device. In other embodiments, the memory 81 may also be an external storage device of the control device 8 of the paint film coating device, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the control device 8 of the paint film coating device. Further, the memory 81 may also include both an internal storage unit and an external storage device of the control device 8 of the paint film coating device. The memory 81 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory 81 may also be used to temporarily store data that has been output or is to be output.

[0138] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0139] An embodiment of the present application provides a computer program product. When the computer program product is run on a paint film coating device, the paint film coating device implements the steps in any of the above-mentioned method embodiments.

[0140] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present application implements all or part of the process in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can be implemented when executed by a processor. The steps of each of the above-mentioned method embodiments. Wherein, the computer program includes a computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium that can carry the computer program code to the paint film coating equipment. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0141] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0142] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0143] In the embodiments provided in the present application, it should be understood that the disclosed method for improving the uniformity of the paint film of the enameled wire, the paint film coating device and the paint film coating equipment can be implemented in other ways. For example, the above-described method for improving the uniformity of the paint film of the enameled wire, the paint film coating device and the paint film coating equipment embodiments are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0144] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0145] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for improving the uniformity of an enameled wire paint film, applied to a paint film coating device, the method comprising: When a signal for processing the copper wire is detected, the coating device is controlled to start; wherein the coating device refers to a device for coating the first paint liquid on the copper wire and forming a first paint film; Detecting the carrying capacity of the polarization tank, and when the carrying capacity is greater than a preset threshold, controlling the polarization tank to polarize; wherein the polarization tank refers to a container for storing a fixed volume of the second paint liquid, and the carrying capacity refers to the amount of the second paint liquid carried in the polarization tank; After the polarization tank is polarized for a first time, the paint liquid nozzle is controlled to spray the second paint liquid on the copper wire, and the first temperature is maintained in the spraying chamber, and the time is set to a second time; wherein the spraying chamber refers to a closed space for spraying the paint liquid on the copper wire; Detecting the spraying progress of the second paint liquid; wherein the spraying progress refers to the progress of the step of spraying the second paint liquid on the copper wire; When the spraying progress is 100%, the electric field device is controlled to start; wherein the electric field device is used to generate a first electric field at the copper wire, the first electric field is used to generate an electric field force on the second paint liquid, and the electric field force on the second paint liquid is opposite to the gravity; When the spraying progress is 100%, the first power source is controlled to be turned on; wherein the first power source is electrically connected to the copper wire, and the first power source makes the copper wire carry a charge, and the charge carried is opposite to the charge carried by the second paint liquid; When the second time period is equal to the preset time period, the temperature of the spraying chamber is controlled to be lowered to room temperature so that the second paint liquid forms a second paint film.

2. The method for improving the uniformity of the enameled wire paint film according to claim 1, characterized in that: The control coating device starts, comprising: After the coating device is started and the copper wire is detected to be in the electrophoretic bath, the electrophoretic paint type of the first paint liquid is detected; wherein the aqueous solution of the first paint liquid exists in the electrophoretic bath, and the first paint liquid is an anodic or cathodic electrophoretic paint; If it is detected that the electrophoretic paint type of the first paint liquid is anodic electrophoretic paint, the first power supply is controlled to use the copper wire as an anode for electrophoretic painting to form the first paint film; If it is detected that the electrophoretic paint type of the first paint liquid is cathode electrophoretic paint, the first power supply is controlled to use the copper wire as a cathode to perform electrophoretic painting to form the first paint film.

3. The method for improving the uniformity of the enameled wire paint film according to claim 1, characterized in that The polarization tank comprises an inlet, an outlet and a first electrode group, wherein the inlet and the outlet are respectively located at the upper end and the lower end of the polarization tank, and the first electrode group is distributed at the upper end and the lower end of the polarization tank; and controlling the polarization tank to perform polarization comprises: The first electrode group in the polarization tank is started, and the first time period is waited; wherein the first electrode group is used to polarize the paint liquid in the polarization tank by electrostatic induction.

4. The method for improving the uniformity of the enameled wire paint film according to claim 3, characterized in that: The polarization tank comprises a first charge replenishment point, which is used to replenish the charge carried away by the second paint liquid flowing out of the polarization tank, and the first charge replenishment point is electrically connected to the zero potential point.

5. The method for improving the uniformity of the enameled wire paint film according to claim 1, characterized in that: The polarization tank comprises an inlet, a first outlet, a second outlet and a second electrode group, wherein the inlet is located at the upper end of the polarization tank, the first outlet and the second outlet are respectively located at the left end and the right end of the polarization tank, and the second electrode group is distributed at the left end and the right end of the polarization tank; and controlling the polarization tank to perform polarization comprises: The second electrode group in the polarization tank is started, and the first time period is waited; wherein the second electrode group is used to polarize the paint liquid in the polarization tank by electrostatic induction.

6. The method for improving the uniformity of the enameled wire paint film according to claim 5, characterized in that: The first flow outlet is connected to a first paint liquid nozzle, and the second flow outlet is connected to a second paint liquid nozzle; the method further comprises: The first paint liquid nozzle is controlled to spray the first copper wire, and the second paint liquid nozzle is controlled to spray the second copper wire; wherein the electric field where the first copper wire is located and the electric field where the second copper wire is located are equal in magnitude and opposite in direction, and the voltage values ​​of the power supply connected to the first copper wire and the power supply connected to the second copper wire are V and -V respectively, and V is a real number greater than zero.

7. The method for improving the uniformity of the enameled wire paint film according to any one of claims 3 to 6, characterized in that: A first filter screen is arranged at the inlet of the polarization tank, and the first filter screen is used to allow the newly replenished second paint liquid to flow smoothly into the polarization tank.

8. The method for improving the uniformity of the enameled wire paint film according to any one of claims 3 to 6, characterized in that: A first sensor is arranged in the polarization tank, and the first sensor is used to detect the liquid level of the second paint liquid in the polarization tank. The method comprises: detecting a first height sent by the first sensor; When the first height is less than a first threshold, controlling a paint liquid replenishing device to replenish the second paint liquid; wherein the paint liquid replenishing device is used to replenish the second paint liquid into the polarization tank; When the first height is greater than a second threshold, the replenishing device is controlled to stop replenishing the second paint liquid.

9. The method for improving the uniformity of the enameled wire paint film according to claim 1, characterized in that: The electric field device comprises a first electrode plate and a second electrode plate symmetrically placed in the upper and lower directions of the copper wire; The control of the electric field device to start up includes: The power supply connecting the first electrode plate and the second electrode plate is turned on to generate the first electric field.

10. A paint film coating device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 9 is implemented.

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