UV curing lamp based on multispectral partition regulation and curing method thereof

Abstract

The invention discloses a UV curing lamp based on multispectral partition regulation and a curing method of the UV curing lamp, and aims to solve the problems of insufficient triggering of a photoinitiator and energy waste caused by single wavelength or micro-mixing of an existing LED lamp. A light-emitting unit containing LED lamp beads with various different wavelengths is designed, a plurality of subareas are divided according to the wavelengths, independent dimming power sources are configured, and required spectrums and energy are matched and aggregated by adjusting the power of the lamp beads in the subareas, so that the method has the advantages that invalid wavelength energy waste is reduced, and energy is saved; the polymerization efficiency and the polymerization percentage are improved; under the same curing requirement, the use of the photoinitiator is reduced, and the cost is reduced; the aging resistance of the material is improved; the adaptability is high, and the requirements of different curing material systems can be flexibly met.

Description

TECHNICAL FIELD

[0001] The present application relates to the curing technical field of coating machines, printing machines and the like, in particular to a UV curing lamp based on multi-spectrum partition control and a curing method thereof. BACKGROUND

[0002] UV curing technology is a process of curing liquid UV materials by using UV light (200-800nm), the core principle of which is that under the irradiation of UV light, the photoinitiator in the liquid UV material is converted into free radicals or cations, which in turn initiates the polymerization of high molecular materials (resin) containing active functional groups to form insoluble and infusible solid coating film. In this process, different types of photoinitiators have specific peak wavelengths, and different wavelengths and power energy inputs are required for each spectral part to initiate polymerization. At present, the LED lamps used for UV curing in coating machines (printing machines) and the like are mostly single-wavelength or micro-mixed wavelength types, and the wavelengths of existing LED lamps are concentrated in the UVA band (360-410nm), with a single-wavelength deviation of only ±2.5-5nm, or only a small amount of micro-mixed combination of similar wavelengths. This design has significant defects: on the one hand, since the peak wavelengths of photoinitiators are diverse, single-wavelength or micro-mixed wavelength LED lamps cannot cover all required wavelengths, resulting in that some photoinitiators cannot be fully triggered, thereby causing insufficient UV material curing; on the other hand, the wavelength energy of some bands is excessively output, while the actual polymerization reaction does not require this part of energy, causing serious energy waste. The above problems not only reduce the UV curing efficiency and quality, but also increase energy consumption and material costs, and at the same time, due to insufficient curing and excessive use of photoinitiators, the aging resistance of the cured material is affected. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the present application provides a UV curing lamp based on multi-spectrum partition control and a curing method thereof.

[0004] The technical solution adopted by the present application to solve its technical problems is: A UV curing lamp based on multi-spectrum partition control, the UV curing lamp comprising a combination of light-emitting units of different spectra, the light-emitting units comprising a plurality of LED lamp beads of different wavelengths, the wavelengths of the LED lamp beads covering 200-800nm, the combined LED lamp beads being divided into a plurality of partitions according to wavelengths, each partition being configured with an independent dimming power supply, and the light-emitting power of the LED lamp beads in the corresponding partition being adjusted by the dimming power supply.

[0005] The different wavelength LED lamp beads include 360-410nm UVA waveband, 280-320nm UVB waveband, 200-280nm UVC waveband and 400-800nm visible light waveband.

[0006] A curing method using the UV curing lamp based on the multi-spectrum zoning regulation as described above, comprising the following steps: Step (1), determining the spectral requirement of the photoinitiator in the curing material system used by the equipment, the spectral requirement including the target wavelength range required for initiating polymerization and the energy requirement corresponding to each wavelength; Step (2), according to the spectral requirement, turning on the combination of the light-emitting units of the LED lamp, and the proportion of the different wavelength LED lamp beads being determined by the curing material system; Step (3), dividing the LED lamp beads combined in step (2) into multiple zones according to the wavelength, configuring an independent dimming power supply for each zone, and adjusting the light-emitting power of the LED lamp beads in the corresponding zone through the dimming power supply; Step (4), based on the polymerization requirement of the photoinitiator in the curing material system, adjusting the power of the LED lamp beads in each zone through the dimming power supply, so that the LED lamp outputs the spectrum and the energy of each wavelength matching the polymerization requirement, and the curing process is completed.

[0007] The number of the zones in step (3) is 2-6, and each zone corresponds to a continuous wavelength interval.

[0008] The division logic of the zones is that the LED lamp beads with a wavelength difference within 10-50nm are divided into the same zone, and the wavelength interval of each zone does not overlap.

[0009] The dimming power supply in step (3) is an electronic power supply with adjustable output power, supporting continuous dimming or step dimming within the power range of 10-100%.

[0010] The dimming power supply has a dimming function, and the actual output light power error of the LED lamp beads is within +-5%.

[0011] The level of the step dimming is not less than 5 levels, and the power difference between adjacent levels is not more than 10%.

[0012] The proportion of the LED lamp beads in step (2) is determined by the spectral response curve of the photoinitiator in the curing material system, ensuring that the initial configuration of each wavelength LED lamp bead matches the main absorption wavelength of the photoinitiator.

[0013] In step (4), the power of the LED lamp beads in each zone is also adjusted redundantly, and the redundant adjustment range is +3-10% of the target power, to adapt to the slight fluctuation of the curing material system.

[0014] The beneficial effects of the present application are: 1. The invention can effectively avoid the energy output of invalid wavelengths in the existing single or micro-mixed wavelength LED lights by precisely configuring multiple different wavelength LED beads according to the spectral requirements of the photoinitiator in the curing material system and adjusting the light power of each wavelength through a partitioned dimming power supply. Only the required wavelengths and corresponding energy for polymerization are output, significantly reducing energy waste and achieving energy-saving purposes.

[0015] 2. By matching the spectral requirements of the photoinitiator, configuring multiple wavelength LED beads and adjusting the power of each wavelength, it is ensured that the photoinitiator can be fully triggered, solving the problem of insufficient curing caused by the absence of wavelengths in the prior art. The curing rate is significantly improved, the hardness of the cured material is improved, and at the same time, under the premise of meeting the same curing requirements, the amount of photoinitiator used in the curing material system can be reduced, reducing the cost of consumables.

[0016] 3. With the reduction of the amount of photoinitiator, the influence of its aging decomposition on the overall performance in the material is reduced, effectively improving the aging resistance of the cured material and prolonging the service life of the product.

[0017] 4. Through partitioned design and independent dimming power supply, the present application can be flexibly adjusted according to different customer's curing material system and photoinitiator type, without the need to replace the LED light main body to adapt to various curing requirements, improving the versatility and practicality of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings and examples.

[0019] Figure 1 is a flowchart of the present application. DETAILED DESCRIPTION

[0020] To make the purpose, technical scheme and advantages of the present application clearer and more explicit, the present application will be further described in detail below in conjunction with specific embodiments and with reference to the drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] It is understood that these descriptions are only exemplary and are not intended to limit the scope of the present application.

[0022] Some embodiments of the present application are described below in conjunction with the drawings.

[0023] Reference is made to Figure 1A UV curing lamp based on multi-spectral zoning regulation, the UV curing lamp comprising a combination of light-emitting units of different spectra, the light-emitting units comprising a plurality of LED lamp beads of different wavelengths, the wavelengths of the LED lamp beads covering 200-800 nm, the combined LED lamp beads being divided into a plurality of zones according to wavelengths, each zone being configured with an independent dimming power supply, and the light-emitting power of the LED lamp beads in the corresponding zone being adjusted by the dimming power supply.

[0024] The wavelengths of the different wavelength LED lamp beads include a UVA waveband of 360-410 nm, a UVB waveband of 280-320 nm, a UVC waveband of 200-280 nm, and a visible light waveband of 400-800 nm.

[0025] A curing method using the UV curing lamp based on multi-spectral zoning regulation as described above, which is an innovative solution proposed for the problem of single spectrum and inaccurate energy regulation of traditional coating machine (printer) UV curing lamps, aiming to achieve efficient adaptation to different coating (ink) systems through multi-wavelength cooperation and independent control of each zone. The technical core lies in the deep combination of spectral requirements, hardware design, and control logic, providing a customized light source solution for the UV curing process of coating machines (printers). It is suitable for industries such as printing, packaging, and electronics that rely on UV curing processes, and has significant advantages for complex coating (ink) systems containing multiple photoinitiators, including the following steps: Step (1) Determine the spectral requirements of the photoinitiator in the coating (ink) system used by the coating machine (printer), including the target wavelength range required for initiating polymerization and the energy requirement corresponding to each wavelength.

[0026] Photoinitiators are key substances for the curing reaction of coatings (inks) under UV irradiation. Their molecular structure determines that only photons of a specific wavelength can break chemical bonds, generating free radicals or cations, which in turn initiate the polymerization and crosslinking of resin monomers. Therefore, determining the spectral requirements is the foundation of the entire plate-making method. If this step is biased, the subsequent lamp bead design and power regulation will lose their basis. The target wavelength range needs to accurately cover the absorption peak interval of the photoinitiator, and the energy requirement is related to factors such as coating (ink) thickness, photoinitiator concentration, and curing speed. For example, a thick coating layer may require higher energy to ensure that the deep coating (ink) is fully cured, and a low concentration of photoinitiator requires a higher corresponding wavelength energy to ensure reaction efficiency.

[0027] Step (1) Determine the spectral requirements: Before implementation, the key parameters of the customer's paint (ink) system need to be collected, focusing on obtaining the spectral response curve of the photoinitiator in the system, and determining the target wavelength range (200-800nm) required for the initiation of polymerization and the energy requirements of each wavelength, for example, if the customer's paint (ink) contains one or more photoinitiators, one of which has a curing peak wavelength of 380nm (UVA band) and more than 50% of the curing efficiency wavelength in the range of 365-400nm, and perhaps another curing peak wavelength of 300nm (UVB band) and more than 50% of the curing efficiency wavelength in the range of 270-300nm, then the target wavelength needs to cover one or both of the peaks (the wavelength of the lamp used in the lamp needs to meet both 365-400nm and 270-300nm) and the corresponding energy interval.

[0028] The process of collecting customer paint (ink) parameters usually includes technical communication with the customer and their suppliers, obtaining paint (ink) MSDS, and if necessary, measuring the spectral response curve of the photoinitiator through laboratory detection means (such as ultraviolet-visible spectrophotometer), which clearly shows the sensitivity of the photoinitiator at different wavelengths, with wavelength as the horizontal axis and absorption intensity as the vertical axis. The peak wavelength is the wavelength most easily absorbed, and the target range of 200-800nm covers the ultraviolet (UVC, UVB, UVA) to visible light region, basically covering the sensitive wavelengths of existing commercial photoinitiators. In the example, two photoinitiators correspond to UVA and UVC bands, respectively, indicating the complexity of the paint (ink) system, which requires simultaneous coverage of the two peak wavelengths, and the energy requirements need to be determined according to the proportion of the two in the paint (ink) and the absorption efficiency, to avoid incomplete curing due to insufficient energy at a certain wavelength.

[0029] Step (2) According to the spectral requirements, design the combination of the light-emitting unit of the LED lamp, which includes multiple LED lamp beads of different wavelengths, the wavelength of the LED lamp bead covers 200-800nm, and the proportion of different wavelength LED lamp beads is determined by the paint (ink) system.

[0030] LED lamp beads have the advantages of good wavelength singularity, low energy consumption, long service life, and instant start, and become an ideal light source for multi-spectrum regulation. When designing the combination of light-emitting units, it is necessary to ensure that the wavelength coverage range of the selected lamp beads completely coincides with the target wavelength range determined in step (1), to avoid spectral gaps. The proportion design of different wavelength lamp beads is the key. If the absorption intensity of a certain wavelength is high in the spectral response curve, it means that the photoinitiator is more sensitive to that wavelength, and more lamp beads of that wavelength should be configured to provide sufficient energy; otherwise, the proportion should be reduced. For example, if the content of 380 nm photoinitiator in the coating (ink) is much higher than that of 280 nm, the proportion of 380 nm lamp beads should be increased accordingly to match the actual curing needs. This proportion needs to be determined by quantitatively calculating the peak intensity proportion of the spectral response curve.

[0031] Further, the wavelengths of the different wavelength LED lamp beads in step (2) include at least two of the UVA band (360-410 nm), the UVB band (280-320 nm), the UVC band (200-280 nm), and the visible light band (400-800 nm).

[0032] The UVA band is the most commonly used band in industrial UV curing, as it has strong penetration ability and is suitable for curing most surface and medium-thickness coatings (inks), and causes less damage to materials. The UVB band has high energy and is suitable for scenarios that require rapid curing, but has weak penetration ability and is often used for thin-layer coatings (inks). The UVC band has the highest energy and has a significant sterilization effect, but it also has a certain degradation effect on most organic materials, so it needs to be used with caution. The visible light band is used for photoinitiators that are not sensitive to UV but respond to specific visible light wavelengths, such as some initiators used in artistic coatings (inks) or special functional coatings. Selecting at least two bands is to meet the needs of coating (ink) systems containing multiple photoinitiators, ensuring that each initiator can be effectively activated and avoiding the problem of a single band not covering all sensitive wavelengths.

[0033] Further, the proportion of LED lamp beads in step (2) is determined by the spectral response curve of the photoinitiator in the coating (ink) system, to ensure that the initial configuration of each wavelength LED lamp bead matches the main absorption wavelength of the photoinitiator.

[0034] In the spectral response curve, the absorption intensity at different wavelengths directly reflects the photoinitiator's demand for that wavelength. Higher absorption intensity means more photons of that wavelength are needed to participate in the reaction. Therefore, the ratio of LED chips must correspond to the proportion of absorption intensity. For example, if the absorption intensity at 380nm accounts for 50% of the total absorption intensity, 280nm accounts for 30%, and 400nm accounts for 20%, then the corresponding LED chip ratio is approximately 5:3:2. This matching can minimize energy waste, concentrate the output light energy on the wavelengths that the photoinitiator absorbs most easily, improve energy utilization efficiency, and avoid problems such as delayed curing due to insufficient LED chips at a certain wavelength or increased energy consumption due to excessive LED chips.

[0035] In this embodiment, LED beads with wavelengths of 280nm (UVC), 380nm (UVA), and 400nm (visible light) are selected. The proportion of LED beads with different wavelengths is determined by the spectral response curve of the photoinitiator in the coating (ink) system. In this embodiment, they are combined in a ratio of 3:5:2 (this ratio is determined by the proportion of the absorption intensity of the two photoinitiators) to ensure that the initial configuration of each wavelength of LED beads matches the main absorption wavelength of the photoinitiator.

[0036] 280nm belongs to the UVC band, corresponding to photoinitiators in coatings (inks) that are sensitive to short wavelengths. Its energy is high and can effectively trigger the decomposition of this type of initiator. 380nm belongs to the UVA band, corresponding to another major photoinitiator. Because this initiator has a high content or stronger absorption efficiency in coatings (inks), it is allocated the highest proportion (5 parts). 400nm belongs to the visible light band and may be used to assist initiation or adjust the curing speed, so it accounts for the lowest proportion (2 parts). The 3:5:2 ratio is obtained by integrating the spectral response curves of the two photoinitiators. For example, the absorption intensity integral value of the first photoinitiator at 280nm accounts for 30% of the total integral value, the second at 380nm accounts for 50%, and the absorption at 400nm may come from the secondary absorption of the two initiators, accounting for 20%. This precise matching ensures that the initial LED configuration can meet most curing requirements and lays the foundation for subsequent fine-tuning.

[0037] Step (3) divides the LED beads assembled in step (2) into multiple zones according to wavelength, and each zone is equipped with an independent dimming power supply. The luminous power of the LED beads in the corresponding zone is adjusted by the dimming power supply.

[0038] Zoned design is key to achieving independent multispectral control. Separating the control of LEDs with different wavelengths avoids interference with other wavelengths when adjusting the power of one wavelength. For example, if 280nm and 380nm LEDs are mixed in one zone, adjusting the power will change the energy of both wavelengths simultaneously, making it impossible to meet the energy requirements of a single wavelength. Independent dimming power supplies can provide stable and adjustable power output to each zone. By changing the current or voltage, the luminous power of the LEDs can be precisely controlled, thereby adjusting the energy output of that wavelength. This design makes the system flexible and can dynamically adjust the energy of each wavelength according to the actual curing effect, adapting to subtle changes in the coating (ink) system or differences between different batches of coatings (inks).

[0039] Furthermore, the number of partitions in step (3) is 2-6, and each partition corresponds to a continuous wavelength range. In this embodiment, it is divided into 3 partitions.

[0040] Too few partitions (e.g., 1) will lose the meaning of independent control and will not achieve precise multispectral matching; too many partitions (e.g., more than 6) will increase the complexity and cost of the system, and the wavelength range of each partition will be too narrow, resulting in limited improvement in actual control effect. 2-6 partitions is the optimal range that comprehensively considers control accuracy and cost. Each partition corresponds to a continuous wavelength range because LEDs with similar wavelengths have similar spectral characteristics and consistent control requirements. For example, 360-380nm can be divided into a UVA sub-region. In this embodiment, because 3 different wavelength LEDs are selected, it is divided into 3 partitions, each partition corresponding to a wavelength, which simplifies the control logic and can meet the control requirements of the system.

[0041] Furthermore, the partitioning logic is as follows: LED beads with wavelength differences within 20nm are divided into the same partition, and the wavelength ranges of each partition do not overlap. Therefore, 280nm beads are divided into the first partition, 380nm beads into the second partition, and 400nm beads into the third partition.

[0042] LED chips with wavelength differences within 20nm have high spectral overlap and similar effects on photoinitiators; merging them into one zone reduces control difficulty. If the difference exceeds 20nm, the spectral characteristics differ significantly, requiring separate control to ensure precision. Non-overlapping wavelength ranges ensure independent function for each zone, preventing mutual interference during control. For example, the wavelength difference between 280nm and 380nm is 100nm, far exceeding 20nm, thus requiring separate zones; the difference between 380nm and 400nm is 20nm, near the critical value, but still divided into different zones for more precise control. This division logic clarifies the control target for each zone, facilitating targeted adjustments based on spectral detection results.

[0043] Furthermore, the dimming power supply mentioned in step (3) is an electronic power supply with adjustable output power, which supports continuous dimming or graded dimming within the power range of 0-100%. The graded dimming level is not less than 5 levels, and the power difference between adjacent levels does not exceed 10%. At the same time, the dimming power supply has a power feedback function, which can monitor the actual output power of the corresponding zone LED beads in real time and automatically calibrate according to the preset power value.

[0044] An adjustable output power electronic power supply is the core hardware component for precise control. Its 0-100% range ensures flexible power adjustment; ≥5 levels of graded dimming and a ≤10% difference guarantee control accuracy; power feedback function offsets the effects of voltage fluctuations, LED aging, and other factors, ensuring stable output power at the preset value. The adjustable output power electronic power supply is the core hardware component for precise control. Its 0-100% adjustment range ensures it can meet various power requirements from low to high energy levels. Continuous dimming enables seamless power changes, making it suitable for scenarios with extremely high energy accuracy requirements. Dimming simplifies operation by using preset fixed power levels, with no fewer than 5 levels and adjacent differences ≤10%, ensuring precise control. For example, 5 levels can be set to 20%, 40%, 60%, 80%, and 100%, with adjacent differences of 20%. However, a better solution is 10 levels (incrementing by 10%) to improve accuracy. The power feedback function monitors the actual output power of the LED beads in real time through sensors and compares it with the preset value. If there is a deviation (such as a drop in power due to voltage fluctuations), the power supply will automatically adjust the output to compensate for the deviation, ensuring that the actual power is stable at the preset value and avoiding the curing effect being affected by power drift.

[0045] Step (4) Based on the polymerization requirements of the photoinitiator in the coating (ink) system, the power of the LED beads in each zone is adjusted by the dimming power supply so that the LED output spectrum and wavelength energy match the polymerization requirements. First, the initial power of each zone is set to 50%. After starting the test mode, the power adjustment of the LED beads in each zone can be achieved through the preset spectrum matching algorithm. After inputting the coating (ink) system parameters, the power adjustment parameters of each zone are automatically generated. If the 380nm wavelength energy is detected to be 10% lower than the required value, the power of the second zone is adjusted to 60% by the dimming power supply; if the 280nm wavelength energy exceeds the requirement by 5%, the power of the first zone is reduced to 45%.

[0046] The initial power setting of 50% is to provide a safe baseline value during the testing phase. This avoids excessive power leading to over-curing of the coating (ink) (such as cracking or discoloration) while also preventing insufficient power from observable the curing effect. In test mode, the output spectrum and energy of the LED lamp are collected in real time by a spectrometer and compared with the preset polymerization requirements. The spectral matching algorithm is the core software support. It has built-in curing models for different coating (ink) systems. After inputting parameters such as photoinitiator type, concentration, and coating (ink) thickness, it can quickly calculate the required energy value for each wavelength and convert it into the corresponding power adjustment parameters for each zone. For example, if the energy at 380nm is insufficient, the power of the second zone is increased; if the energy at 280nm is excessive, the power of the first zone is decreased. This demonstrates the precision of dynamic control, ensuring that the energy at each wavelength remains consistent with the polymerization requirements.

[0047] Step (4) also includes redundancy adjustment of the power of LED beads in each zone. The redundancy adjustment range is +3-10% of the target power. In this embodiment, a +5% power redundancy adjustment space is reserved to adapt to the slight fluctuations of the coating (ink) system, so that the LED lamp outputs a spectrum and wavelength energy that match the polymerization requirements, and completes the plate making of UV curing lamp.

[0048] Minor fluctuations in coating (ink) systems are unavoidable in actual production, such as slight deviations in photoinitiator content, changes in solvent evaporation rates, and fluctuations in ambient temperature and humidity. These factors can lead to slight differences between actual curing requirements and preset values. The redundant adjustment range provides adjustment space to address such fluctuations. +5% means that the power can be adjusted up or down by 8% from the target power. For example, if the target power is 50%, it can be adjusted between 42% and 58%. This design enhances the system's robustness, ensuring stable curing results even with minor changes in the coating (ink). When the power of each zone is adjusted to its optimal state, and the spectrum and energy perfectly match the polymerization requirements, the LED configuration, zone division, and power parameters are recorded. This completes the UV curing lamp plate-making process, providing a standardized solution for subsequent mass production.

[0049] For different coating (ink) systems, the implementation parameters can be flexibly adjusted. When customers change to coatings (inks) containing photoinitiators with a peak wavelength of 320nm (UVB band), there is no need to change the main body of the lamp. Only 320nm lamps are added to the light-emitting unit and divided into the fourth zone. The power of the newly added dimming power supply can be adjusted to match the curing requirements of the new system. Replacing coating (ink) systems is common in industrial production. If the entire UV lamp system needs to be redesigned every time, it will significantly increase costs and downtime. The flexibility of this method lies in its modular design. The main frame of the lamp beads can be retained, and only the corresponding wavelength lamp beads need to be added or removed according to the spectral requirements of the new coating (ink). For example, adding 320nm (UVB band) lamp beads is because the photoinitiator in the new coating (ink) is sensitive to this wavelength. It is divided into a fourth zone and configured with an independent dimming power supply, which can achieve independent control of this wavelength without changing the structure of the original three zones. This rapid adaptation capability significantly improves the versatility of the equipment, reduces production costs, and enhances the flexibility of the production line.

[0050] Through the above implementation methods, the output spectrum of the LED lamp accurately covers the wavelength required by the photoinitiator, and the energy of each wavelength is distributed as needed. The measured curing rate is 15% higher than that of traditional single-wavelength LED lamps, the energy consumption is reduced by 20%, the amount of photoinitiator added in the coating (ink) is reduced by 10%, the material hardness is increased to 3H, and the aging resistance test time is extended to more than 1000 hours.

[0051] Precise spectral coverage ensures that the photoinitiator fully absorbs the energy of the required wavelengths, avoiding the energy waste and incomplete curing problems caused by spectral mismatch in traditional single-wavelength lamps. The on-demand distribution of energy across wavelengths results in a more uniform and complete curing reaction, thus increasing the curing rate by 15%. Previously, 90 out of 100 workpieces were cured successfully; now, 103-104 are cured. Energy consumption is reduced by 20% because energy is concentrated on the effective wavelengths, reducing energy consumption at useless wavelengths. The 10% reduction in photoinitiator dosage is due to improved energy utilization efficiency, eliminating the need for excessive addition to ensure complete reaction. The material hardness has increased to 3H (pencil hardness standard), indicating more complete curing and higher cross-linking density. The extended aging resistance test duration to over 1000 hours indicates a more stable molecular structure after curing, enhancing resistance to UV aging and thermal aging. These performance improvements significantly enhance product quality and lifespan, strengthening market competitiveness.

[0052] In this invention, the term "a plurality of" refers to two or more unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0054] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A UV curing lamp based on multispectral zoning control, characterized in that, The UV curing lamp includes a combination of light-emitting units with different spectra. The light-emitting units include LED beads with different wavelengths, covering a wavelength range of 200-800nm. The combined LED beads are divided into multiple zones according to wavelength, and each zone is equipped with an independent dimming power supply. The light-emitting power of the LED beads in the corresponding zone is adjusted by the dimming power supply.

2. The UV curing lamp based on multispectral zoning control according to claim 1, characterized in that... The wavelengths of the LED beads of different wavelengths include the UVA band of 360-410nm, the UVB band of 280-320nm, the UVC band of 200-280nm, and the visible light band of 400-800nm.

3. A curing method using a UV curing lamp based on multispectral partitioning control as described in claims 1-2, characterized in that, Includes the following steps: Step (1): Determine the spectral requirements of the photoinitiator in the curing material system used in the equipment. The spectral requirements include the target wavelength range required to initiate the polymerization reaction and the energy requirements corresponding to each wavelength. Step (2): According to the spectral requirements, turn on the light-emitting unit combination of the LED lamp, and the proportion of LED beads of different wavelengths is determined by the curing material system; Step (3): Divide the LED beads assembled in step (2) into multiple zones according to wavelength, and configure an independent dimming power supply for each zone. Adjust the luminous power of the LED beads in the corresponding zone through the dimming power supply. Step (4): Based on the polymerization requirements of the photoinitiator in the curing material system, the power of the LED beads in each zone is adjusted by the dimming power supply so that the LED output spectrum and wavelength energy match the polymerization requirements, thus completing the curing process.

4. The curing method of a UV curing lamp based on multispectral partitioning control according to claim 3, characterized in that, The number of partitions in step (3) is 2-6, and each partition corresponds to a continuous wavelength range.

5. The curing method of a UV curing lamp based on multispectral partitioning control according to claim 4, characterized in that, The partitioning logic is as follows: LED beads with wavelength differences within 10nm-50nm are divided into the same partition, and the wavelength ranges of each partition do not overlap.

6. The curing method of a UV curing lamp based on multispectral partitioning control according to claim 3, characterized in that, The dimming power supply mentioned in step (3) is an electronic power supply with adjustable output power, supporting continuous dimming or graded dimming within a power range of 10-100%.

7. The curing method of a UV curing lamp based on multispectral partitioning control according to claim 6, characterized in that, The dimming power supply has a dimming function and can keep the actual output light power error of the LED beads within ±5%.

8. The curing method of a UV curing lamp based on multispectral zoning control according to claim 6, characterized in that, The graded dimming levels are no less than 5 levels, and the power difference between adjacent levels does not exceed 10%.

9. The curing method of a UV curing lamp based on multispectral partitioning control according to claim 3, characterized in that, The proportion of LED beads in step (2) is determined by the spectral response curve of the photoinitiator in the curing material system to ensure that the initial configuration of LED beads of each wavelength matches the main absorption wavelength of the photoinitiator.

10. The curing method of a UV curing lamp based on multispectral partitioning control according to claim 3, characterized in that, Step (4) also includes redundancy adjustment of the power of LED beads in each zone, the redundancy adjustment range being +3-10% of the target power, to adapt to the slight fluctuations in the curing material system.

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