Precious metal two-dimensional code processing method

Abstract

The invention discloses a precious metal two-dimensional code processing method, and relates to the technical field of laser processing. According to the novel laser printing method, laser parameters (such as power, frequency and scanning speed) are optimized so as to adapt to jewelry materials such as different precious metals, gems and jades, damage to the materials is reduced, meanwhile, the definition and readability of two-dimensional codes and bar codes are ensured, a special printing process is adopted, and the printing efficiency is improved. For example, the material is pretreated before printing or is subjected to coating treatment after printing, so that the durability and the stability of the two-dimensional code and the bar code are improved. A self-adaptive printing algorithm is designed for materials in complex shapes, and it is ensured that the two-dimensional code and the bar code can be accurately printed on precious metal, gemstone and jade in various shapes and do not deform.

Description

Technical Field

[0001] The present invention relates to the technical field of laser processing, and in particular to a method for processing a precious metal two-dimensional code. Background Art

[0002] Laser printing of QR codes and barcodes on precious metals, gemstones and jade is one of the important applications of laser in micro-processing. With the continuous development of technology, this field has made significant progress in the following aspects:

[0003] 1. Technical equipment

[0004] 1. The development of high-level lasers and optical focusing systems has made the spot focus more precise. This means that precise processing can be performed in a smaller area. For precious materials such as precious metals, gemstones and jade, high-precision engraving and printing can be achieved without causing too much damage. For example, it is possible to perform fine engraving on the waistline of a 100-micron-wide diamond gemstone, engraving text with a height of only 0.1-40 microns, and the engraving line width can be less than 5 microns. This high-precision processing capability makes it possible to perform complex marking and information recording in a tiny space.

[0005] 2. The emergence of online engraving monitoring system further improves the processing accuracy and quality control level. The system can monitor the engraving process in real time, detect and correct possible problems in time, and ensure that each processing can achieve the expected results. For example, in the process of laser printing QR codes and barcodes, the monitoring system can detect the clarity, completeness and accuracy of QR codes and barcodes to avoid blur, missing or errors.

[0006] 2. Expansion of application areas

[0007] 1. Applicable to diamond and gemstone certification and testing institutions. In the certification and testing process of diamonds and gemstones, laser-printed QR codes and barcodes can be used as unique identifiers to record detailed information about gemstones, such as origin, quality, and identification results. This helps to improve the accuracy and reliability of certification and testing, and also facilitates the traceability and management of gemstones. For example, certification and testing institutions can quickly obtain relevant information about gemstones and conduct authenticity identification and quality assessment by scanning QR codes and barcodes.

[0008] 2. Diamond processing plants can also use this technology to improve production efficiency and product quality. During the diamond processing, the laser-printed QR code and barcode can be used as positioning marks to ensure that each diamond can be processed according to the predetermined design. At the same time, the QR code and barcode can also record the processing technology and parameters of the diamond, providing a basis for subsequent quality control and improvement. For example, by scanning the QR code and barcode, the processing plant can understand the processing progress and quality status of the diamond, adjust the processing technology in time, and improve production efficiency.

[0009] 3. Diamond and gemstone dealers can use laser-printed QR codes and barcodes to prevent counterfeiting and trace the origin of their products. Consumers can scan QR codes and barcodes to check the authenticity and origin of gemstones and enhance their trust in the products. At the same time, dealers can also manage inventory and sales channels through QR codes and barcodes to improve operational efficiency. For example, dealers can print unique QR codes and barcodes on the gemstones they sell, and consumers can scan the QR codes and barcodes through their mobile phones to verify the authenticity of the gemstones and learn about the detailed information of the gemstones.

[0010] 3. Future Development Trends

[0011] 1. With the continuous advancement of technology, the accuracy and speed of laser printing on precious metals, gemstones and jade will be further improved. This will allow more complex patterns and information to be printed in a smaller space, providing more possibilities for the personalized customization and brand building of these precious materials. For example, in the future it may be possible to print high-resolution images or microtext on the surface of gemstones, giving them more artistic value and cultural connotations.

[0012] 2. Intelligence and automation will become the development trend of this field. By combining with artificial intelligence, big data and other technologies, laser printing equipment can realize functions such as automatic material identification, optimization of printing parameters, and real-time quality monitoring to improve production efficiency and product quality. For example, the equipment can automatically adjust the laser parameters and scanning path according to different materials and processing requirements to realize intelligent processing.

[0013] 3. Environmental protection and sustainable development will receive more attention. In the laser printing process, more attention will be paid to reducing energy consumption and material waste, adopting more environmentally friendly materials and processes, and achieving the goal of sustainable development. For example, developing low-energy laser equipment, using recyclable materials for packaging and transportation, and reducing the impact on the environment.

[0014] Traditional diamond processing mainly relies on mechanical cutting and polishing, which are limited in precision and micro-processing capabilities. It is difficult to perform high-precision engraving and marking on a very small space (such as a 100-micron wide diamond waistline). Traditional processing may also produce a large thermal effect, which can easily affect the quality of diamonds, such as changing color or clarity grade.

[0015] 4. Description of some existing technologies Early laser processing technology

[0016] 1. Early laser processing equipment may not be good enough in terms of laser beam quality and focusing ability, making it difficult to achieve high-precision processing with a focused light spot as small as less than 5 microns.

[0017] 2. Early laser processing may have a high thermal effect and cannot meet the "cold processing" requirements for precious materials such as diamonds and gemstones. It is easy to damage the material or affect its quality due to the thermal effect.

[0018] 3. The engraving positioning accuracy may be low. It is difficult to engrave text with a height of only 40 microns on the waistline of a diamond gemstone and ensure extremely high accuracy.

[0019] 4. Early laser equipment may lack an online engraving monitoring system and cannot monitor the engraving process in real time, resulting in poor stability and controllability of processing quality.

[0020] 3. General marking technology

[0021] 1. Traditional identification methods such as stickers and printing may be easily worn and fall off, are not permanent, and it is difficult to achieve a microscopic identification effect that is invisible to the naked eye but visible under a specific magnifying glass.

[0022] 2. These traditional identification technologies may not accurately correspond to the content of diamond gemstone certificates, and it is difficult to engrave complex content such as product traceability or secret information on diamond gemstones.

[0023] The existing methods have the following problems:

[0024] 1. Damage to materials:

[0025] (1) Laser printing of QR codes and barcodes may damage the internal structure of precious metals, gemstones and jade due to improper power control and other reasons, affecting their beauty and value. For example, cracks may be generated when printing on jade, and the internal crystal structure of gemstones may be changed when printing on gemstones.

[0026] (2) It may cause the material surface to become scorched or discolored, which reduces the quality of the material. For example, after printing on precious metals, the surface color changes and no longer has the original luster.

[0027] (3)

[0028] 2. Issues with clarity and readability of QR codes and barcodes:

[0029] (1) Due to the different material properties of precious metals, gemstones and jade, the surface smoothness and refractive index vary greatly, which may result in low clarity of QR codes and barcodes after printing. For example, the high refractive index of gemstones may cause laser scattering on their surface, affecting the clarity of QR codes and barcodes.

[0030] (2) When printing QR codes and barcodes on materials with complex shapes, the curved surface may cause the QR codes and barcodes to be deformed and difficult to read accurately. For example, when printing QR codes and barcodes on jade carved into a special shape, some areas may be blurred or deformed.

[0031] 3. Lack of durability:

[0032] (1) Printed QR codes and barcodes may be easily worn and scratched during daily use, reducing their readability and durability. For items that are frequently exposed to friction, such as precious metal jewelry, QR codes and barcodes may quickly become blurred.

[0033] (2) The stability of the QR code and barcode may be affected by the material under different environmental conditions (such as high temperature, low temperature, humidity, etc.). For example, jade in a humid environment may cause the color of the printed QR code and barcode to fade or become blurred.

[0034] 4. Technical complexity and high cost:

[0035] (1) In order to achieve high-quality QR code and barcode printing on different precious metals, gemstones and jade, complex equipment and precise parameter adjustment are required, which increases the technical difficulty and cost. For example, it is necessary to optimize parameters such as laser power and frequency specifically for different materials, which consumes a lot of time and resources.

[0036] (2) The technical requirements for operators are high, and professional training is required to master the appropriate printing technology, which further increases costs.

[0037] Therefore, a new solution to the above problems needs to be proposed. Summary of the invention

[0038] The purpose of the present invention is to provide a method for processing precious metal two-dimensional codes, aiming to protect a technology for printing two-dimensional codes and bar codes on precious metals, gemstones and jade. Through a specific laser technology parameter setting method, high-quality, low-damage, high-durability and clear and readable two-dimensional codes and bar codes can be printed on jewelry materials such as precious metals, gemstones and jade to meet the needs of identifying, tracing, and preventing counterfeiting of these precious materials, so as to solve the technical problems raised in the background technology.

[0039] To achieve the above object, the present invention provides the following technical solution: a method for processing a precious metal two-dimensional code, comprising at least the following steps:

[0040] S1: Equipment assembly, first assemble the high-level laser, optical focusing system and online engraving monitoring system to ensure the coordination between the systems, then install the high-precision CNC electromigration XYZ platform to ensure that the repeat positioning accuracy can be correct to +1μm, providing a stable platform for high-precision laser printing, and finally connect the laser equipment and computer, install the specially designed software to realize the control and operation of the laser equipment;

[0041] S2: Material preparation, selecting materials on which the QR code needs to be printed, the materials including at least precious metals, gemstones and jade, cleaning and pre-treating the materials, removing impurities and oil stains to improve the adhesion and clarity of the QR code, and determining the content and size of the QR code according to the characteristics and requirements of the materials;

[0042] S3: parameter setting;

[0043] S4: Laser printing, according to the characteristics of different materials, optimize laser parameters to print the two-dimensional code. During the printing process, by accurately controlling the laser parameters, the damage to the material is minimized while ensuring the clarity and readability of the two-dimensional code. The optimized laser parameters at least include power, frequency and scanning speed;

[0044] S5: Coating treatment, which is performed after printing to improve the durability and stability of the QR code. It can not only keep the QR code clear and readable, but also prevent wear and scratches. At the same time, the coating can also make the QR code stable under different environmental conditions, increasing its service life and reliability;

[0045] S6: Quality inspection.

[0046] Furthermore, the high-level laser in the S1 is a customized laser, thereby ensuring high-quality laser beam output. The laser response time is shorter than 3ns, and the thermal efficiency is extremely low, which can effectively reduce thermal damage to the material;

[0047] The optical focusing system in the S1 makes the light spot focus more precise. The optical focusing system reduces the spotlight to 5um by combining a high-power beam expander and a dual-band aberration focusing mirror, thereby achieving high-precision processing;

[0048] The online engraving monitoring and printing system in S1 is used to monitor the engraving and printing process in real time, detect the clarity, completeness and accuracy of the two-dimensional code, promptly discover and correct possible problems, and ensure the stability and controllability of the processing quality.

[0049] Further, the parameter setting of S3 is based on dedicated software and an interactive system with the laser device;

[0050] The dedicated software supports inputting and editing any type of text or graphics. The dedicated software is easy to learn, and operators can master printing technology without long-term professional training, thereby improving production efficiency;

[0051] The interactive system with the laser device is a software that interactively controls the laser device to achieve precise adjustment of laser parameters and automated control of the printing process. For example, according to different materials and processing requirements, the laser parameters and scanning paths are automatically adjusted to achieve an intelligent processing process.

[0052] Furthermore, the S3 at least includes the following steps:

[0053] First, open the dedicated software and enter the content and graphics of the QR code;

[0054] Secondly, adjusting the laser parameters according to the characteristics of the material, which at least include power, frequency and scanning speed;

[0055] At the same time, an adaptive printing algorithm is set to adapt to materials of different shapes;

[0056] Finally, turn on the online engraving monitoring system to ensure the normal operation of the system and to monitor the engraving process in real time.

[0057] Furthermore, the S4 at least includes the following steps:

[0058] First, place the pre-treated material on a high-resolution CNC electromigration XYZ platform and adjust the position and angle of the material to ensure that the QR code can be accurately printed at the desired location;

[0059] Secondly, start the laser equipment to print the QR code. During the printing process, the online engraving monitoring system monitors the engraving process in real time to detect and correct possible problems in time.

[0060] Finally, according to your needs, choose whether to print multiple times to improve the clarity and durability of the QR code.

[0061] Furthermore, the S5 at least includes the following steps:

[0062] First, select the appropriate transparent protective coating material to ensure that the coating has good wear resistance, scratch resistance and environmental resistance;

[0063] Secondly, a specific coating device and method are used to evenly cover the protective coating on the surface of the QR code;

[0064] Finally, it was determined that the coating thickness was moderate, which could protect the QR code without affecting its readability.

[0065] Further, the S6 at least includes the following steps:

[0066] First, use an observation tool to check the clarity, completeness and accuracy of the printed two-dimensional code to ensure that the two-dimensional code is clearly visible under a specific observation tool when it is invisible to the naked eye. The observation tool includes at least a magnifying glass and a microscope;

[0067] Secondly, the wear resistance and environmental resistance of the coated QR code are tested. For example, the wear resistance of the QR code is tested using a friction tester, and the material is placed under different environmental conditions (such as high temperature, low temperature, humidity, etc.) to test the stability of the QR code.

[0068] Finally, when quality problems are discovered, timely adjustments and repairs are made, such as reprinting the QR code or performing coating treatment, to ensure that product quality meets the requirements.

[0069] Compared with the prior art, the present invention has the following beneficial effects:

[0070] 1. Reduce material damage. The present invention minimizes damage to precious metals, gemstones and jade by optimizing laser parameters or adopting special printing technology. For example, low-power, high-frequency lasers are used, or cooling or protective measures are added during the printing process to prevent problems such as cracks and discoloration of the material. Therefore, the original beauty and value of the material can be maintained, so that the printed items still have a high-quality appearance.

[0071] 2. Improve the clarity and readability of QR codes and barcodes. According to the characteristics of different materials, the printing method or technology adopted by the present invention ensures that the QR codes and barcodes have high clarity on precious metals, gemstones and jade. For example, by adjusting the focusing mode, scanning speed and other parameters of the laser, the QR codes and barcodes can be clearly presented on various materials. For materials with complex shapes, adaptive QR code and barcode printing can be achieved to avoid deformation problems, ensuring that the QR code and barcode information can be accurately read on objects of any shape.

[0072] 3. Enhance durability by using special coatings or treatment methods to improve the wear resistance and scratch resistance of printed QR codes and barcodes, so that they are not easily damaged in daily use. For example, a transparent protective coating is applied to the surface of QR codes and barcodes to keep them clear and readable, prevent wear and tear, and keep them stable under different environmental conditions, thus increasing their service life and reliability.

[0073] 4. Reduce technical complexity and cost. The present invention develops a simple and easy-to-use laser printing system, which reduces equipment cost and technical difficulty. Operators can master printing technology without long-term professional training, improve production efficiency, and can be applied to a variety of different precious metals, gemstones and jade materials, reducing the need for complex parameter adjustments and equipment modifications due to material differences, thereby reducing production costs.

[0074] 5. To meet various needs, it can engrave text with a height of only 40 microns on the waistline of various materials, and the engraving line width can be less than 5 microns, which makes it possible to carry out complex identification and information recording in a tiny space, and meets the needs of detailed identification, traceability, and anti-counterfeiting of precious materials; and the online engraving monitoring system monitors the engraving process in real time to ensure the clarity, integrity and accuracy of the QR code, which is convenient for diamond and gemstone certification and testing institutions to conduct authenticity identification and quality assessment, and also provides processing positioning marks and quality control basis for diamond processing plants, while helping diamond and gemstone dealers to carry out product anti-counterfeiting and traceability management. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0076] Embodiment 1:

[0077] A method for processing a precious metal two-dimensional code comprises at least the following steps:

[0078] Materials preparation:

[0079] Choose precious metal materials with higher purity, such as gold, silver, platinum, etc. Surface treatment is performed on the precious metals to remove the oxide layer and impurities to make the surface smooth.

[0080] Depending on the shape and size of the precious metal, choose a suitable fixture to ensure that the precious metal does not deform during the printing process.

[0081] Laser equipment parameter settings:

[0082] Due to the high reflectivity of precious metals, it is necessary to select a laser with moderate power, such as 3-8 W. At the same time, adjust the wavelength and focusing method of the laser to increase the absorption rate of the laser to the precious metal.

[0083] The laser frequency can be set at 40-100kHz, and the scanning speed at 100-450mm / s, which can be adjusted according to the material and thickness of the precious metal to ensure the clarity and readability of the QR code.

[0084] Printing process:

[0085] Fix the precious metal on the fixture and place it on the laser printing platform. Design the QR code pattern through the software and adjust it to the appropriate size and position.

[0086] Start the laser equipment, and the laser beam etches on the surface of the precious metal to form a QR code pattern. During the printing process, pay attention to the color change of the surface of the precious metal, and adjust the parameters in time if there is any color change.

[0087] For precious metal jewelry with complex shapes, multi-angle printing can be used to ensure that the QR code is clearly readable in all parts.

[0088] Coating treatment:

[0089] Choose a wear-resistant and corrosion-resistant coating material, such as a transparent ceramic coating. Spray the coating evenly on the surface of the QR code with a thickness of 0.5-1.5 microns.

[0090] The high temperature curing method is used to make the coating firmly adhere to the surface of the precious metal and improve the durability of the coating.

[0091] Quality Inspection:

[0092] Use a magnifying glass to check the clarity and integrity of the QR code. Make sure the QR code is clearly visible at different angles, without blur or missing parts.

[0093] Conduct a corrosion resistance test by immersing the precious metal in a corrosive solution for a certain period of time to observe whether the QR code is corroded.

[0094] Ensure that the coating can effectively protect the stability of the QR code in harsh environments.

[0095] Embodiment 2:

[0096] Based on the above embodiment 1, the following QR code printing for gemstones is further proposed:

[0097] Materials preparation:

[0098] Choose high-quality gemstones, such as diamonds and sapphires, and ensure that there are no obvious flaws or impurities on the surface. Clean the gemstones to remove dust and oil on the surface. Choose the appropriate fixture according to the size and shape of the gemstone to ensure that the gemstone can be stably fixed during the printing process.

[0099] Laser equipment parameter settings:

[0100] Select a laser with high beam quality and short response time, such as a nanosecond laser. Set the laser power within a suitable range. Generally, for gemstones, it can be set at a lower power, such as 1-5W, to reduce thermal effects. Adjust the laser frequency. Depending on the material of the gemstone and the required printing accuracy, the frequency can be set at 20-100kHz.

[0101] Optimize the scanning speed, usually between 100 and 500 mm / s, to ensure the clarity and integrity of the QR code.

[0102] Printing process:

[0103] Fix the gemstone on the fixture and place it on the laser printing platform. Design the QR code pattern through computer software and transmit it to the laser equipment control system.

[0104] Start the laser equipment, the laser beam scans the surface of the gemstone, and etches the QR code pattern point by point. During the printing process, the online engraving monitoring system monitors the engraving quality in real time, such as clarity and depth.

[0105] For gemstones with complex shapes, an adaptive printing algorithm can be used to automatically adjust the laser scanning path according to the curved shape of the gemstone, ensuring the accuracy and readability of the QR code in different parts.

[0106] Coating treatment:

[0107] Choose a transparent wear-resistant coating material, such as nano-silicon dioxide coating. Spray the coating material evenly on the surface of the printed QR code, with a thickness of 1-2 microns. Use ultraviolet curing equipment to quickly cure the coating to improve the hardness and wear resistance of the coating.

[0108] Quality Inspection:

[0109] Use a magnifying glass or microscope to check the clarity and integrity of the QR code. Make sure the QR code is clearly visible under a 10x magnifying glass, without blurring, missing or deformation.

[0110] Wear resistance test: friction test the coating surface using a friction tester to simulate the wear conditions in daily use.

[0111] Ensure that the QR code remains clear and readable after the coating is rubbed a certain number of times.

[0112] Embodiment three:

[0113] Based on the above embodiment 1, the following two-dimensional code printing for jade is further proposed:

[0114] Materials preparation:

[0115] Select jade materials with fine texture and no obvious cracks, such as Hetian jade and jadeite. Cut and polish the jade to make its surface smooth and flat. Make a special fixture according to the shape and size of the jade to ensure that the jade will not move during the printing process.

[0116] Laser equipment parameter settings:

[0117] Since the hardness of jade is relatively low, a laser with slightly higher power, such as 5-10W, can be selected. However, care should still be taken to control the thermal effect to avoid cracks or discoloration of the jade. The laser frequency can be set at 30-80kHz and the scanning speed at 80-400mm / s, adjusted according to the material and color of the jade to obtain the best printing effect.

[0118] Printing process:

[0119] Fix the jade on the fixture and place it on the laser printing platform. Design the QR code pattern through the software and adjust its size and position to fit the surface of the jade. Start the laser equipment, and the laser beam etches on the surface of the jade to form a QR code pattern. During the printing process, pay close attention to the color change and surface quality of the jade. If there is any abnormality, stop printing in time and adjust the parameters.

[0120] For jade carved into special shapes, 3D scanning technology can be used to obtain the shape information of the jade, and then a customized QR code printing solution can be designed based on the shape to ensure that the QR code can be accurately printed on jade with complex shapes.

[0121] Coating treatment:

[0122] Choose a protective coating suitable for jade, such as a transparent resin coating. Apply the coating evenly on the surface of the QR code, with a thickness of 1.5-2.5 microns. Use natural drying or low-temperature drying to solidify the coating to avoid damage to the jade caused by high temperature.

[0123] Quality Inspection:

[0124] Use a magnifying glass to check the clarity and depth of the QR code. Make sure the QR code is clearly visible under normal light and at a moderate depth that does not affect the beauty of the jade. Perform a water resistance test by soaking the jade in water for a certain period of time to observe whether the QR code becomes blurry or faded. Make sure the coating can effectively protect the stability of the QR code in a humid environment.

[0125] Although the three above embodiments disclose the processing of a QR code, the same method can be used in different embodiments to set the QR code as a barcode, thereby achieving more application scenarios, and the processed materials are not limited to the materials in the above embodiments.

[0126] In summary:

[0127] The key points of the present invention are as follows:

[0128] (1) Laser equipment and parameters

[0129] High-performance laser: The key is to select a high-level laser, which has a short response time (shorter than 3ns) and extremely low thermal efficiency, which can effectively reduce thermal damage to materials and ensure "cold processing" on precious metals, gemstones and jade. Precision optical focusing system: The independently developed optical focusing system, through the combination of high-power beam expander and dual-band aberration focusing mirror, can achieve a spot focus as small as 5um, which is essential for high-precision engraving and printing of QR codes in tiny spaces (such as the 100-micron wide waistline of a diamond gemstone).

[0130] Optimized laser parameters: Precisely adjust laser power, frequency, scanning speed and other parameters to suit different materials of precious metals, gemstones and jade. For example, lower power and higher frequency may be used for gemstones, while for jade and precious metals, the parameter combination is adjusted according to their characteristics to ensure that clear QR codes can be achieved during printing while minimizing damage to the material.

[0131] (II) Process flow

[0132] Material pretreatment: Pretreatment steps such as cleaning the material surface, removing impurities and oil stains can improve the adhesion and clarity of the QR code. For different materials, specific cleaning methods and reagents may be required to ensure the best pretreatment effect. Adaptive printing algorithm: Adaptive printing algorithms are designed for materials with complex shapes to ensure that QR codes can be accurately printed and not deformed on precious metals, gemstones and jade of various shapes. This requires considering factors such as the curved surface and curvature of the material, and adjusting the laser scanning path in real time through the algorithm.

[0133] Coating treatment: Select appropriate coating materials and treatment methods to improve the wear resistance, scratch resistance and stability of the QR code in different environments. For example, the material selection of the transparent protective coating, coating thickness control and curing method are all key, which must ensure the protective effect without affecting the readability of the QR code.

[0134] 3. Software support

[0135] Choose specially designed software for this operation process: Specialized software that is easy to learn and operate is one of the keys. It supports the input and editing of any type of text or graphics, making it convenient for users to design QR code content. At the same time, the interactive control function of the software and the laser equipment can achieve precise adjustment of laser parameters and automatic control of the printing process.

[0136] Online engraving monitoring system: The equipped online engraving monitoring system can monitor the engraving process in real time and detect the clarity, completeness and accuracy of the QR code. The system's monitoring accuracy, response speed and ability to work in conjunction with laser equipment and software are technical keys.

[0137] The present invention develops a new laser printing method, including optimizing laser parameters (such as power, frequency, scanning speed, etc.) to adapt to different jewelry materials such as precious metals, gemstones and jade, reducing damage to the materials while ensuring the clarity and readability of the two-dimensional code and barcode. A special printing process is used, such as pre-treating the material before printing, or coating after printing, to improve the durability and stability of the two-dimensional code and barcode. For materials with complex shapes, an adaptive printing algorithm is designed to ensure that the two-dimensional code and barcode can be accurately printed on precious metals, gemstones and jade of various shapes without deformation.

[0138] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A method for processing a precious metal two-dimensional code, characterized in that: At least the following steps are included: S1: Equipment assembly, first assemble the high-level laser, optical focusing system and online engraving monitoring system to ensure the coordination between the systems, then install the high-precision CNC electromigration XYZ platform to ensure that the repeat positioning accuracy can be correct to +1μm, providing a stable platform for high-precision laser printing, and finally connect the laser equipment and computer, install the specially designed software to realize the control and operation of the laser equipment; S2: Material preparation: select the material on which the QR code needs to be printed, clean and pre-treat it, remove impurities and oil stains to improve the adhesion and clarity of the QR code, and determine the content and size of the QR code based on the characteristics and requirements of the material; S3: parameter setting; S4: Laser printing, according to the characteristics of different materials, optimize laser parameters to print the two-dimensional code. During the printing process, by accurately controlling the laser parameters, the damage to the material is minimized while ensuring the clarity and readability of the two-dimensional code. The optimized laser parameters at least include power, frequency and scanning speed; S5: Coating treatment, which is performed after printing to improve the durability and stability of the QR code. It can not only keep the QR code clear and readable, but also prevent wear and scratches. At the same time, the coating can also make the QR code stable under different environmental conditions, increasing its service life and reliability; S6: Quality inspection.

2. A method for processing a precious metal two-dimensional code according to claim 1, characterized in that: The S1 medium and high level laser is a customized laser, which ensures high-quality laser beam output. The laser response time is shorter than 3ns, and the thermal efficiency is extremely low, which can effectively reduce thermal damage to materials. The optical focusing system in the S1 makes the light spot focus more precise. The optical focusing system reduces the spotlight to 5um by combining a high-power beam expander and a dual-band aberration focusing mirror, thereby achieving high-precision processing; The online engraving monitoring and printing system in S1 is used to monitor the engraving and printing process in real time, detect the clarity, completeness and accuracy of the two-dimensional code, promptly discover and correct possible problems, and ensure the stability and controllability of the processing quality.

3. A method for processing a precious metal two-dimensional code according to claim 1, characterized in that: The parameter setting of the S3 is based on dedicated software and an interactive system with the laser equipment; The dedicated software supports inputting and editing any type of text or graphics. The dedicated software is easy to learn, and operators can master printing technology without long-term professional training, thereby improving production efficiency; The interactive system with the laser device is a software that performs interactive control with the laser device to achieve precise adjustment of laser parameters and automatic control of the printing process.

4. A method for processing a precious metal two-dimensional code according to claim 3, characterized in that: The S3 at least includes the following steps: First, open the dedicated software and enter the content and graphics of the QR code; Secondly, adjusting the laser parameters according to the characteristics of the material, which at least include power, frequency and scanning speed; At the same time, an adaptive printing algorithm is set to adapt to materials of different shapes; Finally, turn on the online engraving monitoring system to ensure the normal operation of the system and to monitor the engraving process in real time.

5. A method for processing a precious metal two-dimensional code according to claim 1, characterized in that: The S4 at least comprises the following steps: First, place the pre-treated material on a high-resolution CNC electromigration XYZ platform and adjust the position and angle of the material to ensure that the QR code can be accurately printed at the desired location; Secondly, start the laser equipment to print the QR code. During the printing process, the online engraving monitoring system monitors the engraving process in real time to detect and correct possible problems in time. Finally, according to your needs, choose whether to print multiple times to improve the clarity and durability of the QR code.

6. A method for processing a precious metal two-dimensional code according to claim 1, characterized in that: The S5 at least comprises the following steps: First, select the appropriate transparent protective coating material to ensure that the coating has good wear resistance, scratch resistance and environmental resistance; Secondly, a specific coating device and method are used to evenly cover the protective coating on the surface of the QR code; Finally, it was determined that the coating thickness was moderate, which could protect the QR code without affecting its readability.

7. A method for processing a precious metal two-dimensional code according to claim 1, characterized in that: The S6 at least comprises the following steps: First, use an observation tool to check the clarity, completeness and accuracy of the printed two-dimensional code to ensure that the two-dimensional code is clearly visible under a specific observation tool when it is invisible to the naked eye. The observation tool includes at least a magnifying glass and a microscope; Secondly, the wear resistance and environmental resistance of the coated QR code are tested to test the stability of the QR code; Finally, when quality problems are discovered, timely adjustments and repairs are made to ensure that product quality meets requirements.