Special spraying system and spraying method for refined ultrathin coating

Abstract

The invention provides a spraying system special for a refined ultrathin coating and a spraying method. The spraying system mainly comprises two 3D printer modules, namely a 3D printer motor driver (5), a 3D printer mainboard (4) and three functional devices, namely a sample fixing platform (3), a constant-current infusion pump (2) and an atomizing nozzle (1). The spraying system adopts a precise spraying method based on the 3D printing modules. By means of mature software and hardware in the 3D printing industry, the research, development and manufacturing cost of the special spraying system for the refined ultrathin coating is greatly reduced. After the spraying system and the spraying method are widely popularized and applied, the research and development cost of products such as lithium ion batteries, fuel cells, solar cells and various electrochemical sensors can be further reduced, and then product innovation and industrial upgrading are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of special equipment for preparing precision coatings, and in particular to a special spraying system and a spraying method for fine ultra-thin coatings. Background Art

[0002] In the preparation process of high-performance lithium-ion batteries, fuel cells, solar cells and various electrochemical sensors, the surface coating of electrode materials relies on precision coating technology. The special spraying system used to prepare fine ultra-thin coatings of electrode materials often adopts non-standard three-axis servo motor system and needs to be matched with customized control software, which leads to the high cost of special spraying system for fine ultra-thin coatings. The industry is in urgent need of special equipment for preparing precision coatings that can meet both high-precision spraying process and low cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a low-cost special spraying system and spraying method for fine ultra-thin coatings in view of the above-mentioned deficiencies in the prior art, which method needs to have the characteristics of high precision, low cost and easy industrialization.

[0004] The present invention is achieved through the following technical solutions: A fine ultra-thin coating special spraying system, characterized in that the fine ultra-thin coating special spraying system mainly comprises an atomizing nozzle (1), a constant flow infusion pump (2), a sample fixing platform (3) and a 3D printer mainboard (4), and a 3D printer motor driver (5) plugged into the 3D printer mainboard (4), a 3D printer display (6) and a 3D printer limit switch (7), the fine ultra-thin coating special spraying system adopts a spraying method based on 3D printing technology, the method comprising the following steps: S1. Draw the spraying trajectory model Draw a two-dimensional or three-dimensional serpentine trajectory model using two-dimensional or three-dimensional drawing software; S2. Generate Gcode Use 3D printer slicing software to import a 2D or 3D serpentine trajectory model, input the number of spray layers and nozzle movement speed setting parameters, and generate Gcode code; S3. Import Gcode Importing the Gcode code into the 3D printer mainboard (4), after the mainboard reads the Gcode code, controls 2-5 3D printer motor drivers (5) to drive 2-5 motors to rotate, and then drives the atomizing nozzle (1) to move according to the spraying trajectory through a belt or a screw; S4. Fix the sprayed object Placing the object to be sprayed on the surface of the sample fixing platform (3) and directly below the spraying track moving area of ​​the atomizing nozzle (1), and finally fixing the object to be sprayed; S5. Spraying The 3D printer mainboard (4) executes the Gcode program. According to the coordinate instructions in the Gcode code, the atomizing nozzle (1) moves at a uniform speed in a serpentine curve in a plane parallel to the sample fixing platform (3). At this time, the constant flow infusion pump (2) is turned on to transport the slurry in the infusion pump to the atomizing nozzle (1) through a pipeline, and the atomized slurry is evenly sprayed onto the surface of the sprayed object.

[0005] The special spraying system for fine ultra-thin coating is characterized in that the atomizing nozzle (1) comprises any one of an ultrasonic atomizing nozzle, a high-voltage electrostatic atomizing nozzle, a two-fluid air atomizing nozzle, and a plasma nozzle, or a combination of multiple nozzles.

[0006] The special spraying system for fine ultra-thin coating is characterized in that the constant flow infusion pump (2) comprises any one of a syringe pump, a peristaltic pump, a gear pump, a plunger pump, a diaphragm metering pump, and a centrifugal pump, or a combination of multiple pumps.

[0007] The special spraying system for fine ultra-thin coatings is characterized in that the atomizing nozzle (1) and the constant flow infusion pump (2) are both independent devices that operate independently and are closed-loop controlled, and online control is achieved through a remote control cable.

[0008] The special spraying system for fine ultra-thin coating is characterized in that the 3D printer motor driver (5) comprises: any one of a stepper motor driver, a closed-loop stepper motor driver, and a servo motor driver, or a combination of multiple drive modules for a 3D printer, and at least 1-2 3D printer motor drivers (5) are used to control the atomizing nozzle (1) to move in a one-dimensional linear (X-axis) or two-axis plane (XY-axis).

[0009] The special spraying system for fine ultra-thin coatings is characterized by a sample fixing platform (3), a heating module and a temperature sensor are embedded in the platform, and the heating module and the temperature sensor are plugged into a 3D printer mainboard (4) or an independent temperature control module via a cable.

[0010] The special spraying system for fine ultra-thin coating is characterized by a sample fixing platform (3) which uses vacuum adsorption or clamp locking method to fix the sample, wherein the platform surface of the vacuum adsorption sample fixing scheme has 16-10000 evenly distributed small holes with a diameter of 0.1mm-3mm, and these small holes are collected through an air pipe and finally connected to the air inlet of the vacuum pump.

[0011] The spraying method based on 3D printing technology is characterized in that S1, drawing a spraying trajectory model, the serpentine linear trajectory model in this step is a serpentine curve with only one starting point and one end point, the parallel line spacing in the serpentine curve is less than or equal to the atomization diameter of the atomizing nozzle (1) (usually 5-50mm), the line width of the serpentine curve is between 1-2 times the nozzle diameter of the printer extruder head in the 3D printer slicing software (usually 0.1-1mm), because less than 1 times is likely to cause the slicing software to fail to generate an effective spraying trajectory, and greater than or equal to 2 times is likely to cause the slicing software to randomly generate an undesirable reciprocating motion trajectory, and the thickness of the serpentine curve is greater than 1 times the nozzle diameter of the printer extruder head in the 3D printer slicing software (usually 0.1-1mm), because less than 1 times is likely to cause the slicing software to fail to generate an effective spraying trajectory.

[0012] The spraying method based on 3D printing technology is characterized in that S1, drawing a spraying trajectory model, the two-dimensional or three-dimensional serpentine linear trajectory model involved in this step is drawn by common two-dimensional or three-dimensional drawing software, and the model format is one or more of .stl, .obj, .dae, .amf, .bmp, .jpg, .jpeg, .png, .g, and .gcode formats.

[0013] The spraying method based on 3D printing technology is characterized in that S2, generating Gcode code, the 3D printer slicing software used in this step includes one or more software of Cura, ChituBox, IdeaMarker, PrusaSlicer, Simplify3D, PhotonWorkshop or a modified slicing software obtained after modifying the 3D printer slicing software.

[0014] The beneficial effects of the present invention are as follows: Different from the prior art, the present invention provides a fine ultra-thin coating special spraying system and spraying method. The present invention utilizes the relatively mature 3D printing motor drive technology on the market, endows the atomizing nozzle (1) with a high-precision and reliable program-controlled motion solution, and realizes the development of a high-precision spraying system. In addition, due to the rapid development of the 3D printer industry in recent years, the core control module of 3D printers has been mass-produced at a relatively low cost, and a large number of 3D printer control software and 3D printer slicing software are also open source free versions. Therefore, with the help of the inexpensive and mature software and hardware in the 3D printing industry, the research and development and manufacturing costs of the fine ultra-thin coating special spraying system of the present invention can be greatly reduced. After the large-scale promotion and application of the fine ultra-thin coating special spraying system and spraying method of the present invention, the research and development costs of products such as lithium-ion batteries, fuel cells, solar cells and various electrochemical sensors will be further reduced, thereby promoting the innovation of related products and industrial upgrading. Implementation

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with embodiments. Example

[0017] A fine ultra-thin coating special spraying system, characterized in that the fine ultra-thin coating special spraying system mainly comprises an ultrasonic atomizing atomizing nozzle (1), a syringe pump type constant flow infusion pump (2), a sample fixing platform (3) with a vacuum adsorption function and an SKR series 3D printer mainboard (4) and a TMC2225 type 3D printer motor driver (5) plugged into the 3D printer mainboard (4) and a mechanical 3D printer limit switch (7).

[0018] A heating plate and a thermistor temperature sensor which are plugged into the 3D printer mainboard (4) are installed inside the sample fixing platform (3). The sample fixing platform (3) uses a vacuum adsorption solution to fix the sample. There are 400 evenly distributed small holes with a diameter of 0.5 mm on the surface of the platform. These small holes are collected through an air pipe and finally connected to the air inlet of the vacuum pump.

[0019] The special spraying system for fine ultra-thin coating adopts the following steps during the spraying process: S1. Draw the spraying trajectory model The three-dimensional serpentine linear trajectory model was drawn using SolidWorks software and generated in .stl format; The serpentine linear trajectory model in this step is a serpentine curve with only one starting point and one end point. The spacing between parallel lines in the serpentine linear trajectory model is 1 mm, which is smaller than the atomization diameter of the atomizing nozzle (1) (usually 5-50 mm, and 10 mm in this embodiment). The line width of the serpentine linear trajectory model is 0.4 mm, which is between 1 and 2 times the nozzle diameter of the printer extruder in the 3D printer slicing software (usually 0.1-1 mm, and 0.4 mm in this embodiment). The thickness of the serpentine linear trajectory model is 0.4 mm, which is larger than the nozzle diameter of the printer extruder in the 3D printer slicing software (0.4 mm).

[0020] S2. Generate Gcode Using a modified version of the 3D printer slicing software Cura, the three-dimensional serpentine linear trajectory model was imported, the number of spray layers was input as 2, and the nozzle movement speed was input as 100 mm / s, and the Gcode code was generated; S3. Import Gcode The Gcode code is imported into the 3D printer main board (4). After the main board reads the Gcode code, it controls two 3D printer motor drivers (5). Driven by two stepper motors and their belts, gears or threaded screws, the ultrasonic atomization type atomization nozzle (1) realizes program-controlled movement of the X and Y axes in the plane.

[0021] S4. Fix the sprayed object The object to be sprayed is placed on the surface of the sample fixing platform (3) and is located directly below the spraying track movement area of ​​the atomizing nozzle (1), and then an external vacuum pump is turned on to fix the object to be sprayed by vacuum adsorption; S5. Spraying The 3D printer mainboard (4) executes the Gcode program. According to the coordinate instructions in the Gcode code, the atomizing nozzle (1) moves at a uniform speed in a serpentine curve in a plane parallel to the sample fixing platform (3). At this time, the constant flow infusion pump (2) is turned on to transport the slurry in the infusion pump to the atomizing nozzle (1) through a pipeline, and the atomized slurry is evenly sprayed onto the surface of the sprayed object. Example

[0022] A fine ultra-thin coating special spraying system, characterized in that the fine ultra-thin coating special spraying system mainly comprises a high-voltage electrostatic atomization type atomization nozzle (1), a plunger pump type constant flow infusion pump (2), a sample fixing platform (3) with a vacuum adsorption function and an MKS series 3D printer mainboard (4) and an MKS type 3D printer motor driver (5) plugged into the 3D printer mainboard (4) and a photoelectric 3D printer limit switch (7).

[0023] A heating plate with a built-in thermocouple and an independent temperature control module is installed inside the sample fixing platform (3). The sample fixing platform (3) uses a vacuum adsorption solution to fix the sample. There are 16 evenly distributed small holes with a diameter of 3 mm on the surface of the platform. These small holes are collected through an air pipe and finally connected to the air inlet of the vacuum pump.

[0024] The special spraying system for fine ultra-thin coating adopts the following steps during the spraying process: S1. Draw the spraying trajectory model The 3D serpentine linear trajectory model was drawn using 3DMax software and an .obj format file was generated; The serpentine linear trajectory model in this step is a serpentine curve with only one starting point and one end point. The parallel line spacing in the serpentine linear trajectory model is 5 mm, which is smaller than the atomization diameter of the atomizing nozzle (1) (usually 5-50 mm, and 15 mm in this embodiment). The line width of the serpentine linear trajectory model is 0.5 mm, which is between 1 and 2 times the nozzle diameter of the printer extruder in the 3D printer slicing software (usually 0.1-1 mm, and 0.3 mm in this embodiment). The thickness of the serpentine linear trajectory model is 0.6 mm, which is larger than the nozzle diameter of the printer extruder in the 3D printer slicing software (0.5 mm).

[0025] S2. Generate Gcode Using a modified version of the 3D printer slicing software Simplify3D, the .obj format three-dimensional serpentine linear trajectory model was imported, the number of spray layers was input as 3, and the nozzle movement speed was input as 50 mm / s, and the Gcode code was generated; S3. Import Gcode The Gcode code is imported into the 3D printer mainboard (4). After the mainboard reads the Gcode code, it controls three 3D printer motor drivers (5). Driven by three closed-loop stepper motors and their belts, gears or threaded screws, the ultrasonic atomization atomization nozzle (1) realizes program-controlled movement of the X and Y axes in the plane, and the sample fixing platform (3) realizes movement of the Z axis.

[0026] S4. Fix the sprayed object The object to be sprayed is placed on the surface of the sample fixing platform (3) and is located directly below the spraying track movement area of ​​the atomizing nozzle (1), and then an external vacuum pump is turned on to fix the object to be sprayed by vacuum adsorption; S5. Spraying The 3D printer mainboard (4) executes the Gcode program. According to the coordinate instructions in the Gcode code, the atomizing nozzle (1) moves at a uniform speed in a serpentine curve in a plane parallel to the sample fixing platform (3). At this time, the constant flow infusion pump (2) is turned on to transport the slurry in the infusion pump to the atomizing nozzle (1) through a pipeline, and the atomized slurry is evenly sprayed onto the surface of the sprayed object. Example

[0027] A fine ultra-thin coating special spraying system, characterized in that the fine ultra-thin coating special spraying system mainly comprises two two-fluid air atomizing type atomizing nozzles (1), a gear pump type constant flow infusion pump (2), a sample fixing platform (3) with a clamp fastening function and an MKS series 3D printer mainboard (4) and a DRV8825 type 3D printer motor driver (5) plugged into the 3D printer mainboard (4) and a mechanical 3D printer limit switch (7).

[0028] The constant flow infusion pump (2) is an independent device, which is used in the form of an external plug-in in conjunction with a spraying system including a 3D printer module. A heating plate and a thermistor temperature sensor connected to the 3D printer mainboard (4) are installed inside the sample fixing platform (3), and the sample fixing platform (3) uses a clamp fastening solution to fix the sample.

[0029] The special spraying system for fine ultra-thin coating adopts the following steps during the spraying process: S1. Draw the spraying trajectory model A two-dimensional serpentine linear trajectory model was drawn using a Windows drawing tool, and a .bmp or .png format image was generated, in which the serpentine linear trajectory was pure black and the rest of the image was pure white; The serpentine linear trajectory model in this step is a serpentine curve with only one starting point and one end point. The parallel line spacing in the serpentine linear trajectory model is 2 mm, which is smaller than the atomization diameter of the atomizing nozzle (1) (usually 5-50 mm, and 8 mm in this embodiment). The line width of the serpentine linear trajectory model is 0.8 mm, which is between 1 and 2 times the nozzle diameter of the printer extruder in the 3D printer slicing software (usually 0.1-1 mm, and 1 mm in this embodiment).

[0030] S2. Generate Gcode Using a modified version of the 3D printer slicing software IdeaMarker, import a 2D serpentine linear trajectory model image in .bmp or .png format, set the thickness of the model to 2 mm (larger than the nozzle diameter of the extruder of the printer in this embodiment, 1 mm) in the slicing software, input the number of spray layers to 5, and input the nozzle movement speed to 200 mm / s, and then generate the Gcode code; S3. Import Gcode The Gcode code is imported into the 3D printer mainboard (4). After the mainboard reads the Gcode code, it controls four 3D printer motor drivers (5). Driven by the four servo motors and their belts, gears or threaded screws, the ultrasonic atomization type atomization nozzle (1) realizes the program-controlled movement of the X and Y axes in the plane, the sample fixing platform (3) realizes the movement of the Z axis, and the fourth servo motor drives the operation of the gear-type constant current infusion pump (2).

[0031] S4. Fix the sprayed object The object to be sprayed is placed on the surface of the sample fixing platform (3) and is located directly below the spraying track moving area of ​​the atomizing nozzle (1), and then an external vacuum pump is turned on to fix the object to be sprayed by means of a clamp; S5. Spraying The 3D printer mainboard (4) executes the Gcode program. According to the coordinate instructions in the Gcode code, the atomizing nozzle (1) moves at a uniform speed in a serpentine curve in a plane parallel to the sample fixing platform (3). At this time, the constant flow infusion pump (2) is turned on to transport the slurry in the infusion pump to the atomizing nozzle (1) through a pipeline, and the atomized slurry is evenly sprayed onto the surface of the sprayed object. Example

[0032] A fine ultra-thin coating special spraying system, characterized in that the fine ultra-thin coating special spraying system mainly comprises two plasma atomizing nozzles (1), two diaphragm metering pump type constant flow infusion pumps (2), two sample fixing platforms (3) with vacuum adsorption function and an MKS series 3D printer mainboard (4) and two A4988 type 3D printer motor drivers (5) plugged into the 3D printer mainboard (4) and two mechanical 3D printer limit switches (7).

[0033] The atomizing nozzle (1), the constant flow infusion pump (2) and the sample fixing platform (3) are all independently operated devices, and are used in the form of external plug-in in conjunction with the spraying system including the 3D printer module. An independently temperature-controlled heating plate is installed inside each sample fixing platform (3), and a vacuum adsorption solution is used to fix the sample. Each platform surface has 10,000 evenly distributed small holes with a diameter of 0.2 mm, which are collected through an air pipe and finally connected to the air inlet of the vacuum pump.

[0034] The special spraying system for fine ultra-thin coating adopts the following steps during the spraying process: S1. Draw the spraying trajectory model The three-dimensional serpentine linear trajectory model was drawn using AutoCAD software and an .amf format file was generated; The serpentine linear trajectory model in this step is a serpentine curve with only one starting point and one end point. The spacing between parallel lines in the serpentine linear trajectory model is 2 mm, which is smaller than the atomization diameter of the atomizing nozzle (1) (usually 5-50 mm, and 12 mm in this embodiment). The line width of the serpentine linear trajectory model is 0.5 mm, which is between 1 and 2 times the nozzle diameter of the printer extruder in the 3D printer slicing software (usually 0.1-1 mm, and 0.5 mm in this embodiment). The thickness of the serpentine linear trajectory model is 0.5 mm, which is equal to the nozzle diameter of the printer extruder in the 3D printer slicing software, 0.5 mm.

[0035] S2. Generate Gcode Using a modified version of the 3D printer slicing software Simplify3D, the .amf format three-dimensional serpentine linear trajectory model was imported, the number of spray layers was input as 1, and the nozzle movement speed was input as 10 mm / s, and the Gcode code was generated; S3. Import Gcode The Gcode code is imported into the 3D printer mainboard (4). After the mainboard reads the Gcode code, it controls two 3D printer motor drivers (5). Driven by two stepper motors and their belts, gears or threaded screws, the ultrasonic atomization type atomization nozzle (1) realizes program-controlled movement of the X axis in the plane, and the sample fixing platform (3) realizes movement of the Y axis.

[0036] S4. Fix the sprayed object The object to be sprayed is placed on the surface of the sample fixing platform (3) and is located directly below the spraying track movement area of ​​the atomizing nozzle (1), and then an external vacuum pump is turned on to fix the object to be sprayed by vacuum adsorption; S5. Spraying The 3D printer mainboard (4) executes the Gcode program. According to the coordinate instructions in the Gcode code, the atomizing nozzle (1) moves at a uniform speed in a serpentine curve in a plane parallel to the sample fixing platform (3). At this time, the constant flow infusion pump (2) is turned on to transport the slurry in the infusion pump to the atomizing nozzle (1) through a pipeline, and the atomized slurry is evenly sprayed onto the surface of the sprayed object.

[0037] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A special spraying system for fine ultra-thin coating, characterized in that The fine ultra-thin coating special spraying system mainly comprises an atomizing nozzle (1), a constant flow infusion pump (2), a sample fixing platform (3), a 3D printer mainboard (4), and a 3D printer motor driver (5) plugged into the 3D printer mainboard (4), a 3D printer display (6), and a 3D printer limit switch (7). The fine ultra-thin coating special spraying system adopts a spraying method based on 3D printing technology, and the method comprises the following steps: S1. Draw the spraying trajectory model Draw a two-dimensional or three-dimensional serpentine trajectory model using two-dimensional or three-dimensional drawing software; S2. Generate Gcode Use 3D printer slicing software to import a 2D or 3D serpentine trajectory model, input the number of spray layers and nozzle movement speed setting parameters, and generate Gcode code; S3. Import Gcode Importing the Gcode code into the 3D printer mainboard (4), after the mainboard reads the Gcode code, controls 2-5 3D printer motor drivers (5) to drive 2-5 motors to rotate, and then drives the atomizing nozzle (1) to move according to the spraying trajectory through a belt or a screw; S4. Fix the sprayed object Placing the object to be sprayed on the surface of the sample fixing platform (3) and directly below the spraying track moving area of ​​the atomizing nozzle (1), and finally fixing the object to be sprayed; S5. Spraying The 3D printer mainboard (4) executes the Gcode program. According to the coordinate instructions in the Gcode code, the atomizing nozzle (1) moves at a uniform speed in a serpentine curve in a plane parallel to the sample fixing platform (3). At this time, the constant flow infusion pump (2) is turned on to transport the slurry in the infusion pump to the atomizing nozzle (1) through a pipeline, and the atomized slurry is evenly sprayed onto the surface of the sprayed object.

2. A special spraying system for fine ultra-thin coating according to claim 1, characterized in that The atomizing nozzle (1) comprises any one of an ultrasonic atomizing nozzle, a high-voltage electrostatic atomizing nozzle, a two-fluid air atomizing nozzle, and a plasma nozzle, or a combination of multiple nozzles.

3. A special spraying system for fine ultra-thin coating according to claim 1, characterized in that The constant flow infusion pump (2) comprises any one of a syringe pump, a peristaltic pump, a gear pump, a plunger pump, a diaphragm metering pump, and a centrifugal pump, or a combination of multiple pumps.

4. A special spraying system for fine ultra-thin coating according to claim 1, characterized in that The atomizing nozzle (1) and the constant flow infusion pump (2) are both independent devices that operate independently and are closed-loop controlled, and are controlled online via a remote control cable.

5. A special spraying system for fine ultra-thin coating according to claim 1, characterized in that The 3D printer motor driver (5) comprises: any one of a 3D printer-specific stepper motor driver, a closed-loop stepper motor driver, and a servo motor driver, or a combination of multiple drive modules. At least 1-2 3D printer motor drivers (5) are used to control the atomizing nozzle (1) to move in a one-dimensional linear (X-axis) or two-axis plane (XY-axis).

6. A special spraying system for fine ultra-thin coating according to claim 1, characterized in that A sample fixing platform (3) has a heating module and a temperature sensor embedded in the platform. The heating module and the temperature sensor are plugged into a 3D printer mainboard (4) or an independent temperature control module via a cable.

7. The special spraying system for fine ultra-thin coating according to claim 1 is characterized in that The sample fixing platform (3) fixes the sample by vacuum adsorption or clamp locking, wherein the platform surface of the vacuum adsorption sample fixing scheme has 16-10000 evenly distributed small holes with a diameter of 0.1mm-3mm, and these small holes are collected through an air pipe and finally connected to the air inlet of the vacuum pump.

8. The spraying method based on 3D printing technology according to claim 1, characterized in that S1. Draw a spraying trajectory model. The serpentine linear trajectory model in this step is a serpentine curve with only one starting point and one end point. The spacing between parallel lines in the serpentine curve is less than or equal to the atomization diameter of the atomizing nozzle (1). The line width of the serpentine curve is between 1 and 2 times the nozzle diameter of the printer extruder in the 3D printer slicing software. The thickness of the serpentine curve is greater than or equal to 1 times the nozzle diameter of the printer extruder in the 3D printer slicing software.

9. The spraying method based on 3D printing technology according to claim 1, characterized in that S1. Draw a spraying trajectory model. The two-dimensional or three-dimensional serpentine linear trajectory model involved in this step is drawn by common two-dimensional or three-dimensional drawing software, and the model format is one or more of .stl, .obj, .dae, .amf, .bmp, .jpg, .jpeg, .png, .g, and .gcode formats.

10. The spraying method based on 3D printing technology according to claim 1, characterized in that S2. Generate Gcode code. The 3D printer slicing software used in this step includes one or more software of Cura, ChituBox, IdeaMarker, PrusaSlicer, Simplify3D, PhotonWorkshop, or a modified slicing software obtained after modifying the 3D printer slicing software.