A light-curing printing system integrating multi-wavelength gradient curing and online cleaning

Abstract

The present invention relates to the field of photocuring printing technology, and more particularly to a photocuring printing system integrating multi-wavelength gradient curing and online cleaning. The system comprises: a discharge module for quantitatively outputting printed material and controlling the thickness of each printed layer; a curing module for gradient curing the printed material by switching operating modes, wherein the operating modes include a first operating mode for deep-layer curing and a second operating mode for surface-layer curing; a detection module for obtaining the material's curing degree, hardness, shrinkage rate, and curing depth ratio; and a control module, connected to the discharge module, the curing module, and the detection module, for determining the eligibility of initial photocuring parameter settings based on post-printing material curing characteristic values, and for determining the reason for failure of the initial photocuring parameter settings based on the material's curing depth ratio. The present invention improves the accuracy and efficiency of photocuring printing.

Description

Technical Field

[0001] The present invention relates to the technical field of photocuring printing, and in particular to a photocuring printing system integrating multi-wavelength gradient curing and online cleaning. Background Art

[0002] Due to its advantages such as high precision and high surface quality, photocuring 3D printing technology has been widely used in precision manufacturing, biomedicine and other fields. However, traditional photocuring systems typically use a single wavelength light source, which is difficult to adapt to the curing requirements of different photosensitive resins, limiting the flexibility of material development. In addition, existing systems often lack efficient resin tank cleaning mechanisms between printing layers. Residual uncured resin can cause interlayer contamination, surface defects, and other problems, affecting the precision and mechanical properties of the molded parts.

[0003] Chinese patent application publication number: CN110901057A, discloses a light-curing 3D printing system, including a material carrier and a material spreader, the material spreader is a rotating belt structure, at least part of the material spreading side of the material spreader is a light-transmitting area, the material spreader and the carrier undergo relative translational motion, and the photosensitive printing material is spread on the carrier opposite to the light-transmitting area, and when the laid photosensitive printing material is still in an extruded state, the light beam passes through the light-transmitting area and selectively irradiates the photosensitive printing material opposite to the light-transmitting area according to the three-dimensional model information to be printed to form a solidified layer, the material spreader and the material carrier can move relative vertically, and during the printing process, the distance between the material spreader and the material carrier is enlarged, and the solidified layers are stacked layer by layer on the material carrier to form a solidified model.

[0004] However, the existing technology has the following problems: the existing technology uses a single wavelength light source for curing, which limits the curing effect; at the same time, the lack of an online cleaning module leads to insufficient bonding between printed layers. Summary of the Invention

[0005] To this end, the present invention provides a light-curing printing system integrating multi-wavelength gradient curing and online cleaning, so as to overcome the problem of low printing precision in the prior art due to a single wavelength and the absence of an online cleaning module.

[0006] To achieve the above objectives, the present invention provides a light-curing printing system integrating multi-wavelength gradient curing and online cleaning, comprising:

[0007] The discharging module is used to quantitatively output printing materials and control the thickness of each printed layer;

[0008] a curing module, configured to perform gradient curing on the printed material by switching operating modes, wherein the operating modes include a first operating mode for deep layer curing and a second operating mode for surface layer curing, the parameters of the first operating mode include a first preset wavelength, a first preset exposure time, and a first preset exposure power, and the parameters of the second operating mode include a second preset wavelength, a second preset exposure time, and a second preset exposure power;

[0009] A detection module, comprising a first detection unit for obtaining a degree of solidification of a material, a second detection unit for obtaining a hardness of a material, and a third detection unit for obtaining a percentage of a solidification depth of the material;

[0010] A control module is connected to the discharge module, the curing module and the detection module respectively, and is used to determine the eligibility of the initial parameter settings of the light curing according to the curing characteristic values of the pre-printed material, and to determine the reason for the failure of the initial parameter settings of the light curing according to the curing depth ratio of the material.

[0011] Furthermore, it also includes a cleaning module and an image acquisition module, wherein the cleaning module is used to remove uncured resin, and the image acquisition module is used to obtain the shrinkage rate and surface smoothness of the material;

[0012] The control module is also connected to the cleaning module and the image acquisition module respectively, and is used to secondary determine the eligibility of the initial parameter settings of the light curing according to the shrinkage rate of the material, and to determine the eligibility of the cleaning parameter settings according to the surface smoothness of the material.

[0013] Furthermore, the control module determines the eligibility of the initial parameter settings for light curing based on the material curing characteristic value after pre-printing, wherein if the material curing characteristic value is less than a first preset curing characteristic value, the initial parameter settings for light curing are determined to be unqualified, and a first preset exposure time is increased based on the difference between the first preset curing characteristic value and the material curing characteristic value;

[0014] If the material curing characteristic value is greater than or equal to the first preset curing characteristic value and less than the second preset curing characteristic value, the initial parameter setting of the light curing is determined to be unqualified, and the eligibility of the initial parameter setting of the light curing is re-determined based on the shrinkage rate of the material;

[0015] If the material curing characteristic value is greater than or equal to the second preset curing characteristic value, it is determined that the initial parameter setting of the light curing is qualified, and the light-cured material is cleaned online.

[0016] Furthermore, the pre-printing process includes:

[0017] Slice the 3D model according to the preset layer thickness and print it;

[0018] After each layer is printed, the printed part is light-cured using the first working mode;

[0019] After each first preset number of layers are printed, the printed part is subjected to a light-curing process in a second working mode;

[0020] Perform online cleaning after completing the printing of the second preset number of layers;

[0021] Pre-printing is completed when the third preset layer is printed.

[0022] Furthermore, the material solidification characteristic value is determined by both the solidification degree and the hardness of the material.

[0023] Furthermore, the control module re-determines the eligibility of the initial parameter settings for light curing based on the shrinkage rate of the material, wherein if the shrinkage rate is less than a first preset shrinkage rate, the re-determines the eligibility of the initial parameter settings for light curing, and performs online cleaning on the light-cured material;

[0024] If the shrinkage rate is greater than or equal to the first preset shrinkage rate and less than the second preset shrinkage rate, a secondary determination is made that the initial parameter settings for light curing are unqualified, and a reason for the unqualified initial parameter settings for light curing is determined based on the curing depth ratio of the material;

[0025] If the shrinkage rate is greater than or equal to the second preset shrinkage rate, it is determined that the initial parameter setting of the photocuring is unqualified, and the first preset number of layers is increased according to the difference between the shrinkage rate and the second preset shrinkage rate.

[0026] Furthermore, the control module determines a reason for failure of the initial parameter settings of the light curing according to the curing depth ratio of the material, wherein if the curing depth ratio is less than a preset curing depth ratio, the failure is determined to be due to substandard thickness of the printed single layer, and the thickness of the printed single layer is reduced according to the difference between the preset curing depth ratio and the curing depth ratio;

[0027] If the curing depth ratio is greater than or equal to the preset curing depth ratio, the reason for failure is determined to be that the printing exposure time does not meet the standard, and the first preset exposure power is increased according to the difference between the curing depth ratio and the preset curing depth ratio.

[0028] Furthermore, several adjustment methods are provided for the single-layer printing thickness, and each adjustment method has a different adjustment range for the single-layer printing thickness.

[0029] Furthermore, the first preset exposure power is positively correlated with the second curing depth ratio difference, wherein the second curing depth ratio difference is the difference between the curing depth ratio and the preset curing depth ratio.

[0030] Furthermore, based on the condition that the surface smoothness of the material is greater than a preset smoothness, it is determined that the cleaning parameter setting is unqualified, and the ultrasonic frequency is increased according to the difference between the surface smoothness of the material and the preset smoothness.

[0031] Compared with the existing technology, the beneficial effect of the present invention is that it integrates a multi-wavelength gradient curing module with an ultrasonic-based online cleaning module, realizing full-process automated processing of photocured prints from layered molding to cleaning enhancement, saving labor costs and improving printing efficiency.

[0032] Furthermore, the present invention adopts a multi-wavelength gradient curing technology with a first working mode and a second working mode, which can dynamically adjust the wavelength, exposure time and power according to different curing requirements, thereby solving the problem of insufficient deep curing or over-curing of the surface layer caused by single wavelength curing, and significantly improving the dimensional accuracy and mechanical properties of the printed parts.

[0033] Furthermore, the present invention integrates an automatic cleaning module to promptly remove uncured resin residues after curing, avoiding interlayer contamination and ensuring the uniformity of subsequent material paving, thereby improving interlayer bonding and overall structural strength, while reducing post-processing cleaning steps and improving printing efficiency.

[0034] Furthermore, the present invention introduces a pre-printing process, and through phased testing of layered curing and online cleaning, parameter setting problems can be identified and corrected in advance, thereby avoiding batch defects in formal printing and reducing material waste.

[0035] Furthermore, when the present invention determines that the initial parameter settings of photocuring are unqualified based on the curing characteristic values of the material after pre-printing, the first preset exposure time is increased, or the eligibility of the initial parameter settings of photocuring is secondarily determined based on the shrinkage rate of the material. Through the intelligent parameter dynamic adjustment mechanism and double judgment, the accuracy and flexibility of printing parameter adjustment are increased.

[0036] Furthermore, the present invention determines the reasons for the unqualified initial parameter settings of photocuring based on the secondary determination of the unqualified conditions according to the proportion of the curing depth of the material, provides a differentiated adjustment strategy, and supports multi-level adjustment methods, taking into account the accuracy and flexibility of parameter adjustment to adapt to the characteristic requirements of different materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the module connections of a light-curing printing system integrating multi-wavelength gradient curing and online cleaning according to an embodiment of the present invention;

[0038] Figure 2This is a flow chart of determining the eligibility of initial parameter settings for light curing based on material curing characteristic values according to an embodiment of the present invention;

[0039] Figure 3 This is a flow chart of a method for secondary determining the eligibility of initial parameter settings for photocuring based on the shrinkage rate of a material according to an embodiment of the present invention;

[0040] Figure 4 This is a flow chart of determining the reason why initial parameter settings for light curing are unqualified based on the curing depth ratio of the material according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0042] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0043] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical test data and the corresponding historical test results of the three months before this test. It can be understood by those skilled in the art that the present invention can determine the above parameters for a single item by selecting the value with the highest proportion as the preset standard parameter based on the data distribution, using weighted summation to use the obtained value as the preset standard parameter, substituting each historical data into a specific formula and using the value obtained by the formula as the preset standard parameter or other selection methods, as long as the present invention can clearly define the different specific situations in the single determination process through the obtained values.

[0044] See also Figures 1 to 4 , which are respectively a schematic diagram of module connections of a light-curing printing system integrating multi-wavelength gradient curing and online cleaning according to an embodiment of the present invention; a flowchart of determining the eligibility of initial parameter settings for light-curing according to material curing characteristic values according to an embodiment of the present invention; a flowchart of secondary determining the eligibility of initial parameter settings for light-curing according to material shrinkage rate according to an embodiment of the present invention; and a flowchart of determining the reason for the failure of initial parameter settings for light-curing according to the curing depth ratio of the material according to an embodiment of the present invention.

[0045] The embodiment of the present invention provides a light-curing printing system integrating multi-wavelength gradient curing and online cleaning, comprising:

[0046] The discharging module is used to quantitatively output printing materials and control the thickness of each printed layer;

[0047] a curing module, configured to perform gradient curing on the printed material by switching operating modes, wherein the operating modes include a first operating mode for deep layer curing and a second operating mode for surface layer curing, the parameters of the first operating mode include a first preset wavelength, a first preset exposure time, and a first preset exposure power, and the parameters of the second operating mode include a second preset wavelength, a second preset exposure time, and a second preset exposure power;

[0048] A detection module, comprising a first detection unit for obtaining a degree of solidification of a material, a second detection unit for obtaining a hardness of a material, and a third detection unit for obtaining a percentage of a solidification depth of the material;

[0049] A control module is connected to the discharge module, the curing module and the detection module respectively, and is used to determine the eligibility of the initial parameter settings of the light curing according to the curing characteristic values of the pre-printed material, and to determine the reason for the failure of the initial parameter settings of the light curing according to the curing depth ratio of the material.

[0050] In an embodiment of the present invention, the first preset wavelength is 385 nm, the first preset exposure time is initially 4 s, the first preset exposure power is initially 100 mW / cm², the second preset wavelength is 405 nm, the second preset exposure time is 1 s, and the second preset exposure power is 60 mW / cm², but the above values are not limited to these, and those skilled in the art may adjust the above values according to actual needs.

[0051] Specifically, the first detection unit is an infrared spectrometer for measuring the degree of curing of the material, the second detection unit is a Shore hardness tester for measuring the hardness of the material, and the third detection unit is a microscope for measuring the curing depth of the material to obtain the curing depth ratio.

[0052] Specifically, it also includes a cleaning module and an image acquisition module, wherein the cleaning module is used to remove uncured resin, and the image acquisition module is used to obtain the shrinkage rate and surface smoothness of the material;

[0053] The control module is also connected to the cleaning module and the image acquisition module respectively, and is used to secondary determine the eligibility of the initial parameter settings of the light curing according to the shrinkage rate of the material, and to determine the eligibility of the cleaning parameter settings according to the surface smoothness of the material.

[0054] Specifically, the cleaning module directionally flushes the residual resin on the surface of the workpiece through an ultrasonic spray head, and the image acquisition module obtains the shrinkage rate and surface smoothness of the material through an industrial camera combined with image processing software.

[0055] Specifically, the control module determines the eligibility of the initial parameter settings for light curing based on the material curing characteristic value after pre-printing, wherein if the material curing characteristic value is less than a first preset curing characteristic value of 0.85, the initial parameter settings for light curing are determined to be unqualified, and a first preset exposure time is increased based on the difference between the first preset curing characteristic value and the material curing characteristic value;

[0056] If the material curing characteristic value is greater than or equal to the first preset curing characteristic value and less than the second preset curing characteristic value of 0.90, the initial parameter setting of the light curing is determined to be unqualified, and the eligibility of the initial parameter setting of the light curing is re-determined based on the shrinkage rate of the material;

[0057] If the material curing characteristic value is greater than or equal to the second preset curing characteristic value, it is determined that the initial parameter setting of the light curing is qualified, and the light-cured material is cleaned online.

[0058] In the embodiment of the present invention, the first preset curing characteristic value is 0.85, and the second preset curing characteristic value is 0.90, but the above values are not limited thereto. Those skilled in the art may adjust the above values according to actual needs.

[0059] Specifically, the first preset exposure time is positively correlated with the curing characteristic difference, wherein the curing characteristic difference is the difference between the first preset curing characteristic value and the material curing characteristic value, and the adjustment range of the first preset exposure time is 4~8s.

[0060] Specifically, the pre-printing process includes:

[0061] The 3D model was sliced and printed at a preset layer thickness of 100 μm;

[0062] After each layer is printed, the printed part is light-cured using the first working mode;

[0063] After each printing of the first preset number of layers 5 is completed, the printed part is subjected to light curing treatment in the second working mode;

[0064] Perform online cleaning after each second preset number of layers (10) of printing is completed;

[0065] When the third preset layer number 20 is printed, the pre-printing is completed.

[0066] In an embodiment of the present invention, the initial value of the preset layer thickness is 100 μm, the initial value of the first preset number of layers is 5, the second preset number of layers is 10, and the third preset number of layers is 20, but the above values are not limited to these. Those skilled in the art can adjust the above values according to actual needs.

[0067] Specifically, the material curing characteristic value is determined by the curing degree and hardness of the material and is calculated by the following formula: , in the formula, is the material solidification characteristic value, is the first weight coefficient, set =0.6, is the degree of curing, is the second weight coefficient, set =0.4, is the hardness, is the hardness threshold, set =85 Shore D.

[0068] Specifically, the control module re-determines the eligibility of the initial parameter settings for light curing based on the shrinkage rate of the material. If the shrinkage rate is less than 2% of the first preset shrinkage rate, the control module re-determines the eligibility of the initial parameter settings for light curing and performs online cleaning on the light-cured material.

[0069] If the shrinkage rate is greater than or equal to the first preset shrinkage rate and less than 5% of the second preset shrinkage rate, a secondary determination is made that the initial parameter settings for light curing are unqualified, and a reason for the unqualified initial parameter settings for light curing is determined based on the curing depth ratio of the material;

[0070] If the shrinkage rate is greater than or equal to the second preset shrinkage rate, it is determined that the initial parameter setting of the photocuring is unqualified, and the first preset number of layers is increased according to the difference between the shrinkage rate and the second preset shrinkage rate.

[0071] In the embodiment of the present invention, the first preset shrinkage rate is 2%, and the second preset shrinkage rate is 5%, but the above values are not limited thereto. Those skilled in the art may adjust the above values according to actual needs.

[0072] Specifically, the first preset number of layers is positively correlated with the shrinkage rate difference, wherein the shrinkage rate difference is the difference between the shrinkage rate and the second preset shrinkage rate, and the adjustment range of the first preset number of layers is 5 to 10.

[0073] Specifically, the control module determines the reason for failure of the initial parameter settings of the light curing according to the curing depth ratio of the material, wherein, if the curing depth ratio is less than 92% of a preset curing depth ratio, the reason for failure is determined to be that the thickness of the printed single layer does not meet the standard, and the thickness of the single layer printing is reduced according to the difference between the preset curing depth ratio and the curing depth ratio;

[0074] If the curing depth ratio is greater than or equal to the preset curing depth ratio, the reason for failure is determined to be that the printing exposure time does not meet the standard, and the first preset exposure power is increased according to the difference between the curing depth ratio and the preset curing depth ratio.

[0075] In the embodiment of the present invention, the preset solidification depth ratio is 92%, but the above value is not limited thereto, and those skilled in the art can adjust the above value according to actual needs.

[0076] Specifically, several adjustment methods are provided for the thickness of the single-layer printing, and each adjustment method has a different adjustment range for the thickness of the single-layer printing. If the first curing depth ratio difference is less than a first preset ratio threshold of 2%, the first thickness adjustment coefficient of 0.9 is used to reduce the thickness of the single-layer printing to the corresponding value.

[0077] If the first curing depth ratio difference is greater than or equal to the first preset ratio threshold and less than 5% of the second preset ratio threshold, the second thickness adjustment coefficient of 0.78 is used to reduce the single-layer printing thickness to a corresponding value;

[0078] If the first curing depth ratio difference is greater than or equal to the second preset ratio threshold, reducing the single-layer printing thickness to a corresponding value using a third thickness adjustment coefficient of 0.6;

[0079] The first curing depth ratio difference is the difference between the preset curing depth ratio and the curing depth ratio.

[0080] In an embodiment of the present invention, the first preset proportion threshold value is 2%, and the second preset proportion threshold value is 5%, but the above values are not limited thereto. Those skilled in the art can adjust the above values according to actual needs.

[0081] Specifically, the thickness of a single layer of printing is adjusted by the control module controlling the discharge amount of the discharge module.

[0082] Specifically, the first preset exposure power is positively correlated with the second curing depth ratio difference, wherein if the second curing depth ratio difference is less than a third preset ratio threshold of 3%, the first preset exposure power is increased to a corresponding value using a first power adjustment coefficient of 1.5;

[0083] If the second curing depth ratio difference is greater than or equal to the third preset ratio threshold and less than the fourth preset ratio threshold of 6%, the first preset exposure power is increased to a corresponding value using a second power adjustment coefficient of 1.3;

[0084] If the second curing depth ratio difference is greater than or equal to the fourth preset ratio threshold, increasing the first preset exposure power to a corresponding value using a third power adjustment coefficient of 1.1;

[0085] The second curing depth ratio difference is the difference between the curing depth ratio and the preset curing depth ratio.

[0086] In an embodiment of the present invention, the third preset proportion threshold value is 3%, and the fourth preset proportion threshold value is 6%, but the above values are not limited thereto. Those skilled in the art may adjust the above values according to actual needs.

[0087] Specifically, the cleaning parameter setting is determined to be unqualified based on the condition that the surface smoothness of the material is greater than a preset smoothness of 5 μm, and the ultrasonic frequency is increased according to the difference between the surface smoothness of the material and the preset smoothness.

[0088] In the embodiment of the present invention, the preset smoothness value is 5 μm, but the above value is not limited thereto, and those skilled in the art can adjust the above value according to actual needs.

[0089] Specifically, the ultrasonic frequency is positively correlated with the smoothness difference, wherein the smoothness difference is the difference between the surface smoothness of the material and the preset smoothness, and the adjustment range of the ultrasonic frequency is 30~40kHz.

[0090] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0091] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A light-curing printing system integrating multi-wavelength gradient curing and online cleaning, characterized in that: include: The discharging module is used to quantitatively output printing materials and control the thickness of each printed layer; a curing module, configured to perform gradient curing on the printed material by switching operating modes, wherein the operating modes include a first operating mode for deep layer curing and a second operating mode for surface layer curing, the parameters of the first operating mode include a first preset wavelength, a first preset exposure time, and a first preset exposure power, and the parameters of the second operating mode include a second preset wavelength, a second preset exposure time, and a second preset exposure power; A detection module, comprising a first detection unit for obtaining a degree of solidification of a material, a second detection unit for obtaining a hardness of a material, and a third detection unit for obtaining a percentage of a solidification depth of the material; a control module, connected to the discharge module, the curing module, and the detection module, respectively, for determining the eligibility of the initial parameter settings for light curing based on the curing characteristic values of the pre-printed material, and determining the reason for the failure of the initial parameter settings for light curing based on the curing depth ratio of the material; It also includes a cleaning module and an image acquisition module, wherein the cleaning module is used to remove uncured resin, and the image acquisition module is used to obtain the shrinkage rate and surface smoothness of the material; The control module is also connected to the cleaning module and the image acquisition module respectively, and is used to determine the eligibility of the initial parameter settings of the light curing according to the shrinkage rate of the material, and to determine the eligibility of the cleaning parameter settings according to the surface smoothness of the material; The control module determines the eligibility of the initial parameter settings for light curing based on the pre-printed material curing characteristic value, wherein if the material curing characteristic value is less than a first preset curing characteristic value, the initial parameter settings for light curing are determined to be unqualified, and a first preset exposure time is increased based on the difference between the first preset curing characteristic value and the material curing characteristic value; If the material curing characteristic value is greater than or equal to the first preset curing characteristic value and less than the second preset curing characteristic value, the initial parameter setting of the light curing is determined to be unqualified, and the eligibility of the initial parameter setting of the light curing is re-determined based on the shrinkage rate of the material; If the material curing characteristic value is greater than or equal to the second preset curing characteristic value, it is determined that the initial parameter setting of the light curing is qualified, and the light-cured material is cleaned online.

2. The integrated multi-wavelength gradient curing and online cleaning light-curing printing system according to claim 1 is characterized in that: The pre-printing process includes: Slice the 3D model according to the preset layer thickness and print it; After each layer is printed, the printed part is light-cured using the first working mode; After each first preset number of layers are printed, the printed part is subjected to a light-curing process in a second working mode; Perform online cleaning after completing the printing of the second preset number of layers; Pre-printing is completed when the third preset layer is printed.

3. The integrated multi-wavelength gradient curing and online cleaning light-curing printing system according to claim 2 is characterized in that: The material solidification characteristic value is determined by the solidification degree and hardness of the material.

4. The integrated multi-wavelength gradient curing and online cleaning light-curing printing system according to claim 3 is characterized in that: The control module re-determines the eligibility of the initial parameter settings for light curing based on the shrinkage rate of the material, wherein if the shrinkage rate is less than a first preset shrinkage rate, the control module re-determines the eligibility of the initial parameter settings for light curing and performs online cleaning on the light-cured material; If the shrinkage rate is greater than or equal to the first preset shrinkage rate and less than the second preset shrinkage rate, a secondary determination is made that the initial parameter settings for light curing are unqualified, and a reason for the unqualified initial parameter settings for light curing is determined based on the curing depth ratio of the material; If the shrinkage rate is greater than or equal to the second preset shrinkage rate, it is determined that the initial parameter setting of the photocuring is unqualified, and the first preset number of layers is increased according to the difference between the shrinkage rate and the second preset shrinkage rate.

5. The integrated multi-wavelength gradient curing and online cleaning light-curing printing system according to claim 4 is characterized in that: The control module determines a reason for failure of initial parameter settings for light curing based on a curing depth ratio of the material, wherein if the curing depth ratio is less than a preset curing depth ratio, the control module determines that the failure is caused by a substandard thickness of a printed single layer, and reduces the thickness of the printed single layer based on a difference between the preset curing depth ratio and the curing depth ratio; If the curing depth ratio is greater than or equal to the preset curing depth ratio, the reason for failure is determined to be that the printing exposure time does not meet the standard, and the first preset exposure power is increased according to the difference between the curing depth ratio and the preset curing depth ratio.

6. The integrated multi-wavelength gradient curing and online cleaning light-curing printing system according to claim 5, characterized in that: Several adjustment methods are provided for the thickness of the single-layer printing, and each adjustment method has a different adjustment range for the thickness of the single-layer printing.

7. The integrated multi-wavelength gradient curing and online cleaning light-curing printing system according to claim 6, characterized in that: The first preset exposure power is positively correlated with the second curing depth ratio difference, wherein the second curing depth ratio difference is the difference between the curing depth ratio and the preset curing depth ratio.

8. The integrated multi-wavelength gradient curing and online cleaning light-curing printing system according to claim 7, characterized in that: The cleaning parameter setting is determined to be unqualified based on the condition that the surface smoothness of the material is greater than the preset smoothness, and the ultrasonic frequency is increased according to the difference between the surface smoothness of the material and the preset smoothness.

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