Laser code removing method and device

Abstract

The invention discloses a laser code removal method and device, and relates to the technical field of laser code removal, and the laser code removal method comprises the following steps: obtaining a laser code removal device; the battery materials needing code removal are fixed to an operation area of laser code removal equipment; according to the two-dimensional code information on the battery material, an output light beam of the laser code removing equipment is pre-adjusted; setting working parameters of the laser code removing equipment; the laser code removing equipment is controlled to output light beams according to the set working parameters, and UV sprayed codes on the battery materials are removed; different from a conventional chemical solvent method and a physical scraping method, in the embodiment of the invention, the UV sprayed code on the surface of the battery material is removed by adopting a laser code removing mode. Compared with a traditional physical scraping mode, code removal is carried out through laser, the battery structure can be protected as much as possible, material damage is avoided, and the code removal efficiency is extremely high.

Description

Technical Field

[0001] This invention relates to the field of laser code removal technology, and in particular to a laser code removal method and equipment. Background Technology

[0002] For defective cylindrical batteries with UV inkjet printing or recycled and reused products, it is necessary to remove the UV ink QR code from the surface of the cylindrical batteries. Currently, the removal of UV ink mainly relies on chemical solvent methods and physical methods, which face prominent problems such as incomplete removal, high risk of environmental pollution, and poor operational safety. Furthermore, there is a lack of standardized processing procedures and environmentally friendly removal technologies. Summary of the Invention

[0003] The main objective of this invention is to propose a laser de-coding method and device, which aims to solve the prominent problems of incomplete removal of UV ink QR codes on the surface of traditional cylindrical batteries, high risk of environmental pollution, and poor operational safety.

[0004] To achieve the above objectives, the present invention proposes a laser decoding method and apparatus for removing UV inkjet printing from the surface of a battery. The laser decoding method includes the following steps:

[0005] Obtain laser decoding equipment; The battery material that needs to be decoded is fixed in the working area of ​​the laser decoding equipment; The output beam of the laser decoding device is pre-adjusted based on the QR code information on the battery material. Set the operating parameters of the laser decoding equipment; The laser decoding equipment is controlled to output a beam according to the set operating parameters and remove UV inkjet codes from battery materials.

[0006] In one embodiment, the laser code removal device includes: Obtain the laser and set its laser parameters; Obtain the lens structure and connect the lens mechanism and the laser to form the laser decoding device.

[0007] In one embodiment, obtaining the lens structure includes: Select a suitable galvanometer unit based on the laser beam type and laser power; Select a suitable field lens unit based on the processing area of ​​UV inkjet printing on the battery material and the diameter of the laser beam; The galvanometer unit and the field lens unit are assembled to form the lens structure.

[0008] In one embodiment, the laser parameters of the laser include laser wavelength, laser beam diameter, and laser power value.

[0009] In one embodiment, the pre-adjustment of the output beam of the laser decoding device based on the QR code information on the battery material includes: Obtain the location information of the inkjet printing on battery materials in the work area; Based on the coding position information, adjust the offset angle of the laser beam and adjust the focal position of the laser beam.

[0010] In one embodiment, the adjustment of the laser beam offset angle is the angle between the laser beam emission angle and the UV coding plane on the battery material.

[0011] In one embodiment, the setting of the operating parameters of the laser decoding device includes: Set the laser pulse width, laser single pulse energy, and spot overlap ratio; Set the motion path of the laser spot on the UV coding plane of the battery material.

[0012] In one embodiment, controlling the laser decoding device to output a light beam with set operating parameters and remove UV inkjet printing from battery materials includes: Obtain the air blowing device and set the output angle of the output end of the air blowing device; Control the laser decoding equipment to output a beam according to the set operating parameters; The laser beam is controlled to move along a preset path to remove UV markings from battery materials. Simultaneously, compressed air is blown out through the blowing device to blow away the ink ion dust from the UV coding area on the battery material.

[0013] This invention also proposes a laser decoding device applied to a laser decoding method, which is used to remove UV inkjet printing on the surface of a battery. The laser decoding method includes the following steps: Obtain laser decoding equipment; The battery material that needs to be decoded is fixed in the working area of ​​the laser decoding equipment; The output beam of the laser decoding device is pre-adjusted based on the QR code information on the battery material. Set the operating parameters of the laser decoding equipment; The laser decoding equipment is controlled to output a beam of light according to the set operating parameters and to remove UV inkjet codes from battery materials; The laser code removal device includes: Mounting frame section; A lens structure, movably mounted on the mounting bracket in a vertical direction, includes a galvanometer unit and a field lens unit, the field lens unit being located at the output end of the galvanometer unit; and... The laser's output is connected to the galvanometer unit.

[0014] In one embodiment, a transmission optical fiber is provided at the output end of the laser, and an optical isolation portion is provided between the other end of the transmission optical fiber and the galvanometer unit; and / or, The laser is configured as a pulsed fiber laser; and / or, The laser decoding equipment also includes an air blowing device, which is used to blow away ink ion dust generated during the decoding process.

[0015] The technical solution of the present invention has the following beneficial effects: 1. Environmentally friendly and pollution-free, requiring no chemical agents or cleaning solutions. The waste material from the cleaning process is solid powder, which is small in volume, easy to store and recycle, and basically does not pollute the environment.

[0016] 2. It does not damage the substrate and employs a non-contact processing method. The laser beam directly cleans and marks the object's surface without contact with the material. This processing method avoids physical damage to the nickel layer on the cylindrical battery surface and does not affect the battery's physical properties.

[0017] 3. High cleaning efficiency with no residue.

[0018] 4. It can be easily integrated with other equipment on the production line, achieving a high degree of automation. By cooperating with conveyor belts, robots, and other equipment, it can complete the clearing and re-marking of UV inkjet QR codes during product flow, improving the automation level of the production line, optimizing production capacity, and saving labor costs.

[0019] 5. Low operating cost: The laser removal method for UV ink QR codes on cylindrical batteries has a simple and effective overall structure and is easy to operate. Cleaning and marking are fast, completing the cleaning and marking of UV inkjet QR codes within seconds, further reducing the processing cost per unit product.

[0020] 6. High processing efficiency: Under computer control, the scanning line speed of the laser beam can reach 30,000 mm / s, making the cleaning and modification process extremely rapid. This efficient processing method not only improves production efficiency but also shortens the product production cycle, helping companies to respond quickly to market demands.

[0021] 7. Low maintenance costs and no lifespan limitations. During mass production, maintenance costs are relatively low, reducing long-term operating costs for businesses.

[0022] 8. High processing precision, reaching the micron level, with excellent cleaning effect achieved through precise control of laser beam energy and scanning path. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a structure of an embodiment of the laser code removal method provided by the present invention; Figure 2 for Figure 1 A detailed flowchart of one embodiment of "acquiring laser decoding equipment" is shown below; Figure 3 for Figure 2 A detailed flowchart illustrating one embodiment of "obtaining lens structure"; Figure 4 for Figure 1 A schematic diagram of a specific process for an embodiment of "pre-adjusting the output beam of the laser decoding device based on the QR code information on the battery material"; Figure 5 for Figure 4 A detailed flowchart of one embodiment of "setting the operating parameters of the laser decoding device" is shown below; Figure 6 for Figure 1 A schematic diagram of a specific process of an embodiment of "controlling a laser decoding device to output a beam of light with set operating parameters and removing UV inkjet codes on battery materials"; Figure 7 For application Figure 1 A schematic diagram of the structure of a laser code removal device according to an embodiment of the laser code removal method. Attached image description: 100. Laser; 101. Transmission fiber; 102. Optical isolation unit; 110. Galvanometer unit; 111. Field lens unit; 120. Mounting bracket; 140. Air blowing device.

[0026] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] For defective cylindrical batteries with UV inkjet printing or recycled products, it is necessary to remove the UV ink QR code from the surface of the cylindrical battery. Currently, the main methods for removing UV ink are chemical solvent methods and physical methods. The chemical solvent method includes the following steps: Alcohol wiping: Gently wipe with a cotton swab dipped in ethanol for 3-5 minutes; this can dissolve some of the ink and is suitable for small-scale operations; Banana oil / acetone treatment: For stubborn inkjet printing, apply a small amount of solvent to a cotton swab and wipe, but be aware of its high volatility and flammability; Special cleaning agents: Such as aluminum-plastic film surface cleaners (containing 65-75% pure water, 5-15% petroleum ether, etc.), which can quickly remove inkjet printing without damaging the surface.

[0031] Physical methods include: heating with a hot air gun: heating removes the ink, but the temperature must be strictly controlled to avoid battery deformation; sanding with fine sandpaper: suitable for metal casings, but may change the surface gloss and affect the product appearance; label covering: a simple and easy temporary solution, but may affect aesthetics and professionalism.

[0032] The main drawbacks of the two methods described above are as follows: Incomplete removal: Ink penetration exists; UV ink may penetrate into the battery surface, making complete removal impossible and leaving residue that affects subsequent processing. Damage to the nickel plating layer on the cylindrical battery surface: Physical methods for removing UV ink, such as grinding or scraping, may damage the nickel layer on the cylindrical battery surface, affecting its subsequent use or recycling value. Furthermore, there is no standard for removal based on different nickel layer thicknesses, creating a barrier to standardization. Limited applicability: Chemical solvents have limitations; some solvents are ineffective on specific materials and may even damage the battery surface. Environmental pollution risks: Hazardous solvent emissions: Traditional solvents such as acetone and banana oil contain volatile organic compounds (VOCs), which are harmful to the environment. Improper waste disposal: If the waste after removal is not properly disposed of, it may cause secondary pollution. Safety hazards: Flammability and explosion risks: Many solvents are flammable; improper handling may lead to fire or explosion. Health hazards: Solvent volatiles may cause respiratory and skin damage to operators. Solvent consumption: The large-scale use of chemical solvents increases processing costs. Low efficiency: Chemical solvent methods and physical methods typically require manual operation, resulting in low efficiency and long processing cycles. Some stubborn inkjet printing requires multiple treatments, extending the overall processing time. Lack of unified standards: Non-standardized methods: Different companies use different removal methods, lacking unified industry standards. Insufficient effectiveness evaluation: The removal effect lacks quantitative evaluation standards, making it difficult to ensure consistency. Lack of environmental supervision: Some companies do not strictly implement environmental regulations, leading to improper waste disposal. Insufficient safety measures: Operators lack necessary safety training and protective measures. Currently, the industry faces prominent problems such as incomplete removal, high environmental pollution risks, and poor operational safety, and lacks standardized treatment processes and environmentally friendly removal technologies.

[0033] This invention proposes a laser code removal method and equipment to solve the above-mentioned problems.

[0034] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the laser decoding method is used to remove UV inkjet printing on the surface of a battery, and the laser decoding method includes the following steps: Obtain laser decoding equipment; Unlike conventional chemical solvent methods and physical scraping methods, this embodiment uses laser decoding to remove UV inkjet printing on the surface of battery materials.

[0035] This method offers significant advantages in terms of efficiency, environmental friendliness, and precision. Lasers can generate high energy instantaneously, rapidly vaporizing or decomposing UV coding materials, thus quickly removing the coding and greatly improving removal efficiency. Simultaneously, the laser coding removal process eliminates the need for chemical solvents, avoiding environmental pollution and meeting environmental protection requirements. Furthermore, the laser beam can be precisely controlled in terms of its range and depth, preventing unnecessary damage to the battery material surface and ensuring battery quality and performance. Compared to traditional physical scraping methods, laser coding removal protects the battery structure as much as possible, preventing material damage, and offers extremely high coding removal efficiency.

[0036] Specifically, before decoding, the battery material to be decoded is first fixed in the working area of ​​the laser decoding equipment, which is equipped with a special clamping device. These clamps can be flexibly adjusted according to the battery material of different specifications and shapes to ensure that the battery material remains stable and does not shake or shift due to the laser, thereby ensuring the accuracy of decoding.

[0037] The fixture structure used to fix the battery materials can be a fixed structure that is fixedly installed in the work area, or it can be a mobile carrier structure. When the mobile carrier structure is performing code removal, it can be fixed in the work area and cooperate with the laser code removal equipment to perform code removal.

[0038] After the battery material is fixed in the work area, the location information of the QR code on the battery material in the work area can be obtained through the relevant visual structure of the laser decoding device. Furthermore, the output beam of the laser decoding device is pre-adjusted based on the QR code information on the battery material. The main task is to adjust the position of the laser spot output by the laser decoding device so that the output beam corresponds to the position of the UV inkjet on the battery material, and to adjust the offset angle of the reflected light of the laser beam to avoid damage to the lens structure of the laser decoding device.

[0039] After the above adjustments are completed, the operating parameters of the laser code removal device can be set; In this scheme, the laser 100 is preferably a pulsed fiber laser, and its specific operating parameters include laser wavelength, laser beam diameter, and laser power value.

[0040] The above values ​​meet the actual requirements for UV inkjet coding removal. Specifically, the wavelength range is between 1020nm and 1080nm, the single-pulse energy of the laser beam should be between 0.2mJ and 1mJ, the laser beam spot size should be between 30um and 70um, and the laser power should be between 100W and 250W. In practical applications, these parameter settings ensure that the laser coding removal equipment can efficiently and accurately remove UV inkjet codes from battery materials. A wavelength between 1020nm and 1080nm allows the laser to interact well with the UV inkjet material, achieving effective removal. A single-pulse energy between 0.2mJ and 1mJ ensures sufficient energy to destroy the coding structure without causing unnecessary damage to the battery material itself due to excessive energy. A laser beam spot size between 30um and 70um accurately covers the coding area, improving the accuracy of coding removal. The laser power, between 100W and 250W, provides stable and sufficient energy support for the entire code division process, ensuring the smooth progress of the code division operation.

[0041] The laser decoding equipment is controlled to output a beam according to the set operating parameters and remove UV inkjet codes from battery materials.

[0042] During operation, the laser decoding equipment must first be precisely calibrated, with the operating parameters set within the aforementioned appropriate range. The equipment is then started, allowing it to stably output a laser beam according to the set parameters. The laser beam precisely illuminates the UV-printed code location on the battery material, utilizing the energy generated by the interaction between the laser and the UV-printed material to gradually destroy the code structure, thoroughly removing it from the battery material surface. The entire process is efficient and precise, without causing any additional adverse effects on the battery material.

[0043] Under computer control, the scanning linear speed of the laser beam can reach 30,000 mm / s, making the cleaning and modification process extremely rapid. This efficient processing method not only improves production efficiency but also shortens the product production cycle.

[0044] In some embodiments, such as Figure 1 and Figure 2 As shown, the laser decoding device specifically includes the following steps: Acquire laser 100 and set the laser parameters of laser 100; The laser 100 is preferably configured as a pulsed fiber laser, and its specific operating parameters are set with reference to the range values ​​mentioned above.

[0045] Obtain the lens structure and connect the lens mechanism and the laser 100 to form the laser decoding device.

[0046] The lens structure can adjust the incident and exit angles of the laser beam and can focus the laser on the UV-printed marking position on the battery material. The entire laser decoding device mainly consists of the laser 100 and the lens structure. During decoding, the laser 100 emits pulsed laser light to the lens structure, which adjusts the beam so that the laser spot falls on the UV-printed marking position on the battery material, thereby achieving efficient decoding.

[0047] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, obtaining the lens structure specifically includes the following steps: Based on the laser beam type and laser power, a suitable galvanometer unit 110 is selected. The selected galvanometer unit 110 must have high-speed scanning capability to ensure that the laser beam can quickly and accurately cover the UV coding area on the battery material. Simultaneously, the accuracy of the galvanometer unit 110 is also a critical factor, directly affecting the positioning accuracy of the laser spot and the coding removal effect. When selecting the galvanometer unit 110, its compatibility with the laser 100 and lens structure must also be considered to ensure the stability and reliability of the entire laser coding removal equipment.

[0048] Then, based on the processing area of ​​the UV inkjet printing on the battery material and the diameter of the laser beam, a suitable field lens unit 111 is selected; The selected field lens unit 111 must have a suitable working distance and numerical aperture to match the focusing requirements of the laser beam, ensuring that the laser energy can be applied uniformly and effectively to the UV coding area. The focal length of the field lens unit 111 is also crucial, as it directly determines the size and shape of the laser spot on the battery material surface, thus affecting the accuracy and efficiency of the coding process. Furthermore, the material and coating process of the field lens unit 111 must also be considered to reduce light loss and scattering, and improve the stability and reliability of laser transmission.

[0049] The galvanometer unit 110 and the field lens unit 111 are assembled to form the lens structure.

[0050] During assembly, it is crucial to ensure the precise relative positions of the galvanometer unit 110 and the field lens unit 111 to prevent laser beam deviation or distortion during transmission. Simultaneously, the assembly process must strictly adhere to operating procedures, employing high-precision positioning and fixing devices to guarantee the overall stability and reliability of the lens structure. After assembly, rigorous testing and debugging are necessary to verify that the lens structure's performance indicators meet design requirements.

[0051] In some embodiments, such as Figure 1 and Figure 4As shown, the pre-adjustment of the output beam of the laser decoding device based on the QR code information on the battery material specifically includes the following steps: Acquire the location information of the inkjet printing on battery materials in the work area. Using a high-precision vision recognition system or a pre-set coordinate positioning system, accurately capture the specific coordinates of the QR code on the surface of the battery materials. This system must have high resolution and fast response capabilities to ensure accurate acquisition of inkjet printing location information even on high-speed production lines. Simultaneously, the system must possess powerful image processing capabilities to automatically identify and filter out other interfering factors on the battery surface, such as stains and scratches, ensuring the accuracy of the acquired inkjet printing location information.

[0052] Based on the coding position information, the offset angle of the laser beam is adjusted, and the focal position of the laser beam is also adjusted. After completing the initial equipment inspection, the positions of the galvanometer unit 110 and the field lens unit 111 are adjusted via the Z-axis moving platform to ensure that the laser beam focal point is on the processing plane. According to the size of the UV ink QR code, the Z-axis is adjusted to increase the focal compensation value, ensuring that the QR code remains within the effective focal depth range of the laser beam during processing. Furthermore, anti-reflection technology is used to ensure that the laser beam generated by the laser 100 is subsequently incident at a certain offset angle, preventing the laser beam from reflecting back to the galvanometer unit 110 from the processing plane and thus preventing damage to the galvanometer and field lens.

[0053] Furthermore, by employing laser focus compensation, focus compensation can be performed on cylindrical batteries and QR codes of different specifications, ensuring the effectiveness of the processing.

[0054] Specifically, the adjustment of the laser beam offset angle is the angle between the laser beam emission angle and the UV coding plane on the battery material (i.e., the material processing plane).

[0055] The material processing plane is the target processing plane. The galvanometer moving system consists of a Z-axis. The focal point is the distance from the field mirror plane to the processing plane, and its value can be determined by the following formula:

[0056] Where D1 is the offset range, df is the diameter of the focused spot, M² is the laser beam quality factor, and k is the correction coefficient, which should be between 0.1 and 0.9.

[0057] The focus compensation is determined by the following formula:

[0058] in, For the focus compensation, R is the radius of the cylindrical battery cross-section, and d is the size of the QR code.

[0059] In some embodiments, such as Figure 1 , Figure 4 and Figure 5 As shown, setting the operating parameters of the laser decoding device specifically includes the following steps: The laser pulse width, single-pulse energy, and spot overlap rate must be set. When setting these parameters, factors such as the material characteristics, color depth, and clarity of the UV ink QR code must be comprehensively considered. The laser pulse width should be chosen to ensure sufficient action on the UV ink, causing it to rapidly vaporize or decompose, while avoiding unnecessary damage to the battery surface. The single-pulse energy needs precise control; excessive energy may cause battery surface ablation, while insufficient energy will fail to effectively remove the QR code. The spot overlap rate affects processing efficiency and quality. An appropriate overlap rate can improve the uniformity and thoroughness of QR code removal, but excessive overlap will reduce processing speed and increase unnecessary energy consumption. Therefore, in actual operation, multiple trials and adjustments are necessary to find the optimal parameter combination to achieve efficient and high-quality laser code removal.

[0060] Set the motion path of the laser spot on the UV coding plane of the battery material.

[0061] When setting the motion path of the laser spot on the UV-printed plane of the battery material, precise planning is required based on the shape, size, and distribution of the QR code. For regularly shaped QR codes, simple paths such as straight-line scanning or spiral scanning can be used to ensure that the laser can uniformly cover the entire QR code area. For irregularly shaped QR codes, more complex path planning algorithms are needed, such as adaptive scanning paths or intelligent scanning paths based on image recognition, to adapt to changes in the shape of the QR code and improve the removal effect. Simultaneously, the movement speed of the laser spot must also be considered; too fast a speed may lead to incomplete removal, while too slow a speed will reduce processing efficiency. Therefore, in actual operation, flexible adjustments must be made according to specific circumstances to achieve the best laser decoding effect.

[0062] In some embodiments, such as Figure 1 and Figure 6 As shown, the process of controlling the laser decoding device to output a light beam according to set operating parameters and remove UV inkjet codes from battery materials specifically includes the following steps: Obtain the air blowing device 140 and set the output angle of the output end of the air blowing device 140. When obtaining the air blowing device 140, it is necessary to ensure that the performance of the air blowing device 140 is stable and that it can provide sufficient and stable compressed air. The output angle of its output end should be reasonably set according to the specific position and shape of the UV inkjet on the battery material so as to more effectively blow away the ink ion dust.

[0063] After the air blowing device 140 is ready, the laser decoding device can be controlled to output a beam of light with the set working parameters. When controlling the laser decoding device to output a beam of light with the set working parameters, these working parameters include the power and frequency of the laser. They need to be precisely set according to factors such as the material of the battery material, the depth and color of the UV inkjet printing, so as to ensure that the inkjet printing can be effectively removed without damaging the battery material.

[0064] Then, the laser beam can be controlled to remove the UV code on the battery material along a preset motion path. It should be noted that when controlling the laser beam to remove the UV code on the battery material along the preset motion path, the operation must be strictly carried out according to the previously planned path. For the straight line scanning or spiral scanning path of regular-shaped QR codes, the uniformity and integrity of the scanning must be ensured. For the adaptive scanning path or intelligent scanning path based on image recognition of irregular-shaped QR codes, it must be ensured that the laser beam can accurately follow the shape change of the QR code to remove it.

[0065] When removing UV inkjet printing, compressed air needs to be blown out simultaneously through the blowing device 140 to remove ink ion dust from the UV inkjet printing area on the battery material. It is important to pay attention to the timing and force of the blowing device 140, coordinating it with the laser beam's removal action. The ink ion dust should be blown away promptly at the moment the laser beam removes the inkjet printing to prevent the dust from re-adhering to the battery material and affecting the removal effect.

[0066] It should be noted that the aforementioned laser cleaning method is environmentally friendly and pollution-free, requiring no chemical agents or cleaning solutions. The waste generated is a small-volume solid powder, easy to store and recycle, and causes virtually no environmental pollution. Furthermore, it employs non-contact processing, preventing damage to the substrate. The laser beam directly cleans and marks the object's surface without contact with the material. This processing method avoids physical damage to the nickel layer on the cylindrical battery surface and does not affect the battery's physical properties. It achieves high cleanliness with no residue. Moreover, the aforementioned structure can be integrated into production lines, easily integrating with other equipment and achieving a high degree of automation. By cooperating with conveyor belts, robots, and other equipment, it can complete the clearing and re-marking of UV inkjet QR codes during product flow, improving production line automation, optimizing capacity, and saving labor costs.

[0067] This invention also proposes a laser code removal device, which is applied to a laser code removal method. The specific structure of this laser code removal method is as described in the above embodiments. Since this laser code removal device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The laser code removal device includes a mounting frame 120, a lens structure, and a laser 100. The lens structure is movably mounted on the mounting frame 120 in a vertical direction, and includes a galvanometer unit 110 and a field lens unit 111. The field lens unit 111 is located at the output end of the galvanometer unit 110. The output end of the laser 100 is connected to the galvanometer unit 110.

[0068] The mounting frame 120 provides a stable support structure for the entire device, ensuring that the device does not shake during the laser code removal process, thereby guaranteeing the stability and accuracy of the laser beam. The galvanometer unit 110 can quickly change the direction of the laser beam. By precisely controlling the swing angle of the galvanometer, it enables flexible scanning of the laser beam on the battery material to adapt to the UV code removal requirements of different shapes and positions. The field lens unit 111 focuses and shapes the laser beam reflected by the galvanometer unit 110, enabling the laser beam to form a spot of appropriate size and shape on the surface of the battery material, further improving the removal effect. The laser 100, as the laser source, provides a high-energy, high-stability laser beam for the entire code removal process. Its output end is connected to the galvanometer unit 110, ensuring that the laser can smoothly enter the galvanometer unit 110 for subsequent scanning operations.

[0069] In some embodiments, such as Figure 3 As shown, the output end of the laser 100 is provided with a transmission optical fiber 101, and the other end of the transmission optical fiber 101 and the galvanometer unit 110 are provided with an optical isolation part 102. The transmission fiber 101 efficiently transmits the high-energy laser beam generated by the laser 100 to the galvanometer unit 110, reducing energy loss during transmission and ensuring the quality and intensity of the laser beam. The optical isolation unit 102 plays a crucial protective and stabilizing role. It effectively prevents the laser beam reflected back from the galvanometer unit 110 from being transmitted back to the laser 100, avoiding damage to the laser 100. It also reduces interference from reflected light on the laser beam, ensuring the laser beam remains stable before entering the galvanometer unit 110, thus better enabling the laser decoding operation.

[0070] The laser 100 is configured as a pulsed fiber laser; Pulsed fiber lasers possess unique advantages, capable of generating high peak power and narrow pulse width laser pulses. This characteristic allows the laser to release high energy within an extremely short time when applied to the target code, thus enabling more precise and rapid code division and effectively improving code division efficiency. Furthermore, the high-quality laser beam output from pulsed fiber lasers ensures stability and accuracy during transmission and scanning, further enhancing the effectiveness and reliability of laser code division.

[0071] The laser decoding equipment also includes an air blowing device 140, which is used to disperse ink ion dust generated during the decoding process. The air blowing device 140 is ingeniously designed, precisely controlling the force and direction of the airflow according to the actual working conditions of the laser decoding process. During decoding, when the laser acts on the target code and generates ink ion dust, the air blowing device 140 is activated promptly, using a suitable airflow to quickly disperse the dust, preventing dust accumulation inside the equipment. This effectively prevents dust from contaminating and damaging the internal optical components, ensuring long-term stable operation of the equipment. Simultaneously, dispersing dust also helps maintain a clean working environment, reducing the impact on operator health and improving the safety and reliability of the entire laser decoding operation.

[0072] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A laser decoding method for removing UV inkjet printing from the surface of a battery, characterized in that, The laser code removal method includes the following steps: Obtain laser decoding equipment; The battery material that needs to be decoded is fixed in the working area of ​​the laser decoding equipment; The output beam of the laser decoding device is pre-adjusted based on the QR code information on the battery material. Set the operating parameters of the laser code removal equipment; The laser decoding equipment is controlled to output a beam according to the set operating parameters and remove UV inkjet codes from battery materials.

2. The laser code removal method as described in claim 1, characterized in that, The laser code removal device includes: Obtain the laser and set its laser parameters; Obtain the lens structure and connect the lens mechanism and the laser to form the laser decoding device.

3. The laser code removal method as described in claim 2, characterized in that, Obtaining the lens structure includes: Select a suitable galvanometer unit based on the laser beam type and laser power; Select a suitable field lens unit based on the processing area of ​​UV inkjet printing on the battery material and the diameter of the laser beam; The galvanometer unit and the field lens unit are assembled to form the lens structure.

4. The laser code removal method as described in claim 2, characterized in that, The laser parameters of the laser include laser wavelength, laser beam diameter, and laser power value.

5. The laser code removal method as described in claim 1, characterized in that, The step of pre-adjusting the output beam of the laser decoding device based on the QR code information on the battery material includes: Obtain the location information of the inkjet printing on battery materials in the work area; Based on the coding position information, adjust the offset angle of the laser beam and adjust the focal position of the laser beam.

6. The laser code removal method as described in claim 5, characterized in that, The adjustment of the laser beam offset angle is the angle between the laser beam emission angle and the UV coding plane on the battery material.

7. The laser code removal method as described in claim 5, characterized in that, The operating parameters for the laser decoding device include: Set the laser pulse width, laser single pulse energy, and spot overlap ratio; Set the motion path of the laser spot on the UV coding plane of the battery material.

8. The laser code removal method as described in claim 1, characterized in that, The control of the laser decoding device to output a beam of light according to set operating parameters and to remove UV inkjet printing from battery materials includes: Obtain the air blowing device and set the output angle of the output end of the air blowing device; Control the laser decoding equipment to output a beam according to the set operating parameters; The laser beam is controlled to move along a preset path to remove UV markings from battery materials. Simultaneously, compressed air is blown out through the blowing device to blow away the ink ion dust from the UV coding area on the battery material.

9. A laser code removal device, applied to the laser code removal method as described in any one of claims 1-8, characterized in that, The laser code removal device includes: Mounting frame section; A lens structure, movably mounted on the mounting bracket in a vertical direction, includes a galvanometer unit and a field lens unit, the field lens unit being located at the output end of the galvanometer unit; and... The laser's output is connected to the galvanometer unit.

10. The laser code removal device as described in claim 9, characterized in that, The laser's output end is provided with a transmission optical fiber, and the other end of the transmission optical fiber and the galvanometer unit are provided with an optical isolation section; and / or, The laser is configured as a pulsed fiber laser; and / or, The laser decoding equipment also includes an air blowing device, which is used to blow away ink ion dust generated during the decoding process.

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