Laser cleaning equipment and cleaning method

Abstract

The invention belongs to the technical field of battery manufacturing, and discloses laser cleaning equipment and a cleaning method. The laser cleaning equipment comprises a discharging roller, a collecting roller, a conveying roller set, a cleaning assembly and a temporary storage assembly. The discharging roller is used for placing materials; the material receiving roller is used for rolling materials; the conveying roller set forms a cleaning path used for conveying materials. The cleaning assembly is used for cleaning the surfaces of the materials; the materials are wound around the cache assembly, and the cache assembly can store the materials which are not cleaned and release the materials which pass through the cleaning assembly and are cached so that the materials corresponding to the cleaning assembly can be locally kept static. Therefore, when the laser cleaning equipment is used, the problem of local stress concentration of materials in the cleaning process is solved, it is ensured that no pinhole is formed in the film surface, and the film surface quality is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, in particular to a laser cleaning device and a cleaning method. BACKGROUND

[0002] With the continuous growth of demand for high safety and high energy density batteries in the field of new energy vehicles and energy storage, composite current collector materials (such as copper / aluminum plastic composite current collectors) have become the core development direction of power battery current collectors due to their excellent electrical conductivity, lightweight, and short-circuit resistance. Among them, vacuum evaporation coating technology is widely used in the large-scale preparation of composite current collector metal layers due to its high deposition rate, good film uniformity, and strong process controllability. However, this technology still faces key process bottlenecks in industrial production: during high-temperature evaporation, the surface of the metal pool is prone to cause liquid surface fluctuation due to local overheating, and even boiling phenomenon, resulting in metal droplets splashing onto the film surface, forming splashing particles, concave-convex points and other defects.

[0003] In the prior art, roll pressing is the mainstream process for removing defects such as splashing points of the composite current collector. This process applies pressure to the film material by upper and lower rollers, uses mechanical deformation to flatten or detach the protruding defects such as splashing points, and controls the film flatness by adjusting the roller gap and rolling speed.

[0004] However, this physical extrusion method, while eliminating defects, can cause the polymer layer and the metal layer interface to peel off due to local stress concentration, thereby forming a large number of pinholes on the film surface, affecting the film surface quality. SUMMARY

[0005] The purpose of the present application is to provide a laser cleaning device and a cleaning method, which solves the problem of the prior art that the film material is removed by physical extrusion, which causes a large number of pinholes to form on the film surface due to local stress concentration, affecting the film surface quality.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a laser cleaning device, comprising:

[0008] A feed roller for placing the material;

[0009] A take-up roller disposed opposite the feed roller and used to wind the material;

[0010] A transmission roller group disposed between the feed roller and the take-up roller and forming a cleaning path for transmitting the material, the material passing through the cleaning path and winding around the take-up roller;

[0011] A laser cleaning assembly for laser cleaning the surface of the material;

[0012] A buffer component, on which material is wound, is provided. The buffer component can store unwashed material and release material that has passed through the laser cleaning component and been buffered, so that the material corresponding to the laser cleaning component remains locally stationary.

[0013] Optionally, the caching component includes:

[0014] A first buffer roller is slidably disposed between the laser cleaning assembly and the feeding roller, and the first buffer roller can be moved away from the cleaning path to store materials;

[0015] The second buffer roller is slidably disposed between the laser cleaning assembly and the receiving roller, and the second buffer roller is close to the cleaning path to release material.

[0016] Optionally, the laser cleaning assembly includes:

[0017] The first cleaner is used for laser cleaning of the first side of the material;

[0018] The second cleaner is located opposite the first cleaner and is used for laser cleaning of the material on the second side.

[0019] Optionally, the laser cleaning equipment further includes:

[0020] A first detector is disposed near the discharge roller and located between the buffer assembly and the first cleaner to detect unwashed material when it is stationary.

[0021] Optionally, the laser cleaning equipment further includes:

[0022] A second detector is disposed near the receiving roller and located between the second cleaner and the buffer assembly to detect the cleaned material when it is stationary.

[0023] Optionally, the laser cleaning equipment further includes:

[0024] The first transition roller corresponds to the first washer;

[0025] The second transition roller corresponds to the second cleaner;

[0026] The material cleaned by the first cleaner is wound around the first transition roller and the second transition roller and then corresponds to the second cleaner.

[0027] Optionally, the transfer roller assembly includes:

[0028] A guide roller, disposed near the feed roller and around which material is wound, the guide roller having a third detector for detecting the material position; and / or

[0029] Flattening rollers press against the material to flatten it; and / or

[0030] Measuring roller, around which material is wound to measure the length of the material; and / or

[0031] A measuring roller around which material is wound to measure the tension of the material; and / or

[0032] The pressure roller is opposite to the take-up roller and forms a gap between them for the material to pass through.

[0033] Optionally, the transfer roller assembly includes:

[0034] Multiple guide rollers are spaced apart along the cleaning path; some of the guide rollers are movably connected to drive rollers, and a gap is formed between the drive rollers and the guide rollers to allow material to pass through. The drive rollers can move closer to or further away from the guide rollers.

[0035] Optionally, the take-up roller can be close to or far from the feed roller; and / or

[0036] Both the feeding roller and the receiving roller are equipped with material detectors for detecting the roll diameter.

[0037] In a second aspect, the present invention provides a cleaning method applied to the laser cleaning equipment described in any one of the first aspects, comprising:

[0038] The material is continuously conveyed along the cleaning path and buffered after passing through the laser cleaning components;

[0039] When the material is cleaned, the continuously released material is buffered and the material that has been buffered by the laser cleaning component is released, so that the material at the cleaning position remains stationary until the cleaning is completed.

[0040] When cleaning is complete, continue conveying the material along the cleaning path so that the next part of the material can enter the cleaning position.

[0041] The beneficial effects of this invention are:

[0042] Firstly, during the material cleaning process, the material is fed from the feeding roller along the cleaning path to the receiving roller. Both the feeding and receiving rollers rotate simultaneously, with the feeding roller continuously releasing material and the receiving roller continuously collecting it. When the material passes through the laser cleaning assembly for laser cleaning, the buffer component activates to temporarily store the material released by the feeding roller. Simultaneously, the material passing through the laser cleaning assembly has already been buffered. The buffered material can then be released to allow the receiving roller to continue collecting material, thus keeping the material corresponding to the laser cleaning assembly stationary. This allows for static alignment between the laser cleaning assembly and the material, enabling the laser cleaning assembly to perform laser cleaning. Therefore, in use, the feeding and receiving rollers operate continuously, while the buffer component buffers the material during cleaning, ensuring static alignment between the material and the corresponding part of the laser cleaning assembly. This achieves laser cleaning of the material, preventing localized stress concentration during cleaning and ensuring no pinholes form on the membrane surface, thereby effectively improving membrane quality.

[0043] Secondly, the above method enables continuous release and rewinding of materials during laser cleaning. By pre-buffering and releasing the materials, static alignment between the materials and the laser cleaning components is achieved, enabling precise laser cleaning. The cleaning process does not require interruption, allowing for continuous cleaning of all areas of the materials. This effectively saves cleaning time, improves cleaning efficiency, and ensures that no local stress concentration occurs during cleaning, effectively reducing the possibility of pinholes on the film surface, thereby significantly improving the quality of the materials after cleaning. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the structure of the laser cleaning equipment in this embodiment of the invention for cleaning the material on both sides.

[0045] Figure 2 This is a schematic diagram of the structure of the laser cleaning equipment in this embodiment of the invention for cleaning one side of the material surface;

[0046] Figure 3 This is a cross-sectional view of the material being cleaned by the laser cleaning equipment in this embodiment of the invention;

[0047] Figure 4 This is a process flow diagram of the laser cleaning equipment used to clean the surface of a material on one side in an embodiment of the present invention;

[0048] Figure 5 This is a process flow diagram of the laser cleaning equipment used to clean the double-sided surface of materials in an embodiment of the present invention;

[0049] Figure 6 This is a schematic flowchart of the cleaning method in an embodiment of the present invention.

[0050] In the picture:

[0051] 1. Feeding roller; 2. Receiving roller; 3. Transfer roller assembly; 31. Passing roller; 32. Flattening roller; 33. Correcting roller; 34. Metering roller; 35. Measuring roller; 36. Pressure roller; 37. Drive roller; 4. Laser cleaning assembly; 41. First cleaner; 42. Second cleaner; 5. Buffer assembly; 51. First buffer roller; 52. Second buffer roller; 6. Material; 61. PET / PP layer; 62. Copper / aluminum layer; 63. Protrusion; 7. Material detector; 8. First transition roller; 9. Second transition roller; 10. First detector; 20. Second detector; 100. Housing; 200. Protective platform. Detailed Implementation

[0052] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0053] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0056] like Figures 1 to 6 The present invention discloses a laser cleaning device and a cleaning method.

[0057] Reference Figures 1 to 3 The laser cleaning equipment includes a feeding roller 1, a receiving roller 2, a transfer roller group 3, a laser cleaning component 4, and a buffer component 5. The feeding roller 1 is used to place material 6; the receiving roller 2 is arranged opposite to the feeding roller 1 and is used to wind up the material 6; the transfer roller group 3 is arranged between the feeding roller 1 and the receiving roller 2 and forms a cleaning path for transferring the material 6, and the material 6 is wound around the receiving roller 2 after passing through the cleaning path; the laser cleaning component 4 is used to perform laser cleaning on one or both sides of the material 6; the material 6 is wound around the buffer component 5, which can store uncleaned material 6 and release the material 6 that has passed through the laser cleaning component 4 and been buffered, so that the material 6 corresponding to the laser cleaning component 4 remains locally stationary.

[0058] Specifically, material 6 can be a membrane structure, such as a composite current collector, which includes a PET / PP layer 61. Both the upper and lower surfaces of the PET / PP layer 61 are covered with copper / aluminum layers 62. Copper / aluminum protrusions 63 on the surface of the copper / aluminum layer 62 are defects. The feeding roller 1 and the receiving roller 2 are arranged opposite to each other, and both are individually equipped with servo motors for driving rotation. Their speeds can be flexibly adjusted, and the feeding roller 1 can continuously feed material, while the receiving roller 2 can continuously collect material.

[0059] A housing 100 is provided on the feeding roller 1 and the receiving roller 2. The transfer roller group 3 is set inside the housing 100 and may include multiple rollers that are spaced apart. The material 6 can pass around the multiple rollers in sequence and be wrapped around the receiving roller 2. A cleaning path is formed between the multiple rollers. The laser cleaning component 4 can perform laser cleaning on only one side of the material 6, or it can clean both sides of the material 6 as needed. The specific number and distribution of the rollers can be arranged according to the cleaning requirements of the material 6. This invention does not limit this.

[0060] The buffer component 5 can be a rotating structure with adjustable speed or a sliding translational structure. The rotating structure can form a buffer by winding up the material 6 released from the unloading roller 1 at a higher speed, or release the material 6 that has been buffered by the laser cleaning component 4. The translational structure forms a buffer by sliding down the material 6 released from the unloading roller 1 and removing it from the cleaning path, and sends the material 6 that has been buffered by the laser cleaning component 4 back to the cleaning path, thereby making the material 6 partially stationary, while the receiving roller 2 and the unloading roller 1 can continue to rotate. In this embodiment, two buffer components 5 are arranged at intervals between the unloading roller 1 and the receiving roller 2 to perform pre-buffering and post-buffering of the material 6, respectively. The pre-buffering is the buffer before the material is cleaned, and the post-buffering is the buffer after the material is cleaned. The material between the two buffer components 5 remains stationary when the buffer components 5 are activated, forming a stationary area. Part of the material in the stationary area can correspond to the laser cleaning component 4, so that the laser cleaning component 4 can clean both sides of the material.

[0061] The specific static time can be set according to the actual cleaning needs. For example, the length of material 6 in each cleaning cycle of the laser cleaning component 4 is A, and the cleaning time is a. The rollers in the cleaning area pull material 6 at a consistent speed, pulling material 6 for a length of A each time, consistent with the length of material 6 in laser cleaning, and the time for pulling material 6 each time is b. The front buffer buffers material 6 with a length of A before the start of cleaning, ensuring the initial demand for material 6 in the cleaning area. The unwinding speed is A / (a+b), ensuring the supply of material when the rollers pull material 6 next time. The maximum buffer capacity of the front buffer is 2A, ensuring the effectiveness of the front buffer. The rear buffer buffers material 6 with a length of A before the start of the equipment, ensuring the initial demand for material 6 during winding. The winding speed is A / (a+b), and the maximum buffer capacity of the rear buffer is 2A, ensuring the effectiveness of the rear buffer. In this way, the uninterrupted winding and unwinding can be ensured through the corresponding matching relationship, and the static state during cleaning can be guaranteed.

[0062] When cleaning material 6, material 6 is fed from the feeding roller 1 along the cleaning path and placed around the receiving roller 2. The feeding roller 1 and the receiving roller 2 are driven to rotate simultaneously. The feeding roller 1 continuously releases material 6, while the receiving roller 2 continuously collects material 6. When material 6 passes through the laser cleaning component 4 for cleaning, the buffer component 5 activates to temporarily store the material 6 released by the feeding roller 1. At the same time, the material 6 that has passed through the laser cleaning component 4 has been pre-buried. At this time, the buffered material 6 can be released so that the receiving roller 2 can continue to collect material, thereby keeping the material 6 corresponding to the laser cleaning component 4 stationary. Thus, the laser cleaning component 4 and the material 6 can form a static alignment, and the laser cleaning component 4 can efficiently clean the material 6. Therefore, when this laser cleaning equipment is in use, the feeding roller 1 and the receiving roller 2 can run continuously, while the buffer component 5 buffers the material 6 during cleaning, so that the part of the material 6 corresponding to the laser cleaning component 4 forms a static alignment, thereby achieving laser cleaning of the material 6. This prevents the material 6 from generating local stress concentration during the cleaning process, ensuring that pinholes do not form on the film surface, thus effectively improving the film surface quality. Meanwhile, the entire cleaning process can be carried out continuously without repeated start-ups and shutdowns, improving cleaning efficiency. It also maintains stable tension on material 6, reducing the possibility of deformation and ensuring the final product meets quality requirements. Mechanical wear on various structures within the laser cleaning equipment is also mitigated, and the laser cleaning component 4 does not require additional energy for calibration, effectively reducing overall production and maintenance costs.

[0063] Optionally, both the feeding roller 1 and the receiving roller 2 are equipped with material detectors 7 for detecting the roll diameter.

[0064] The roll diameter refers to the total thickness of material 6 wound on the unwinding roller 1 or the take-up roller 2. Because the thickness of a single layer of material 6 is uniform, measuring the roll diameter allows for the adjustment of the output torque of the drive components that rotate the unwinding roller 1 and the take-up roller 2, thereby ensuring stable tension during the continuous release and winding of material 6. It also allows for the determination of the remaining amount of material 6, facilitating timely replacement and replenishment by operators, further improving the overall level of automation.

[0065] Optionally, the transfer roller group 3 includes a guide roller 31, a flattening roller 32, a correction roller 33, a metering roller 34, a measuring roller 35, and a pressure roller 36. Multiple guide rollers 31 are provided and are distributed at intervals along the cleaning path; some of the guide rollers 31 are movably connected to an active roller 37 above them, and a gap is formed between the active roller 37 and the guide roller 31 for the material 6 to pass through. The active roller 37 can move closer to or further away from the guide roller 31.

[0066] Specifically, multiple guide rollers 31 are arranged at intervals according to the actual flow direction of the material 6. Each guide roller 31 can appropriately change the conveying direction of the material 6. The specific layout of the guide rollers 31 can be designed according to the actual installation space, and this invention does not limit it. An active roller 37 is arranged above the guide rollers 31 near the first detector 10 and the second detector 20. The active roller 37 can move up and down in the vertical direction so that the active roller 37 can move closer to or away from the guide rollers 31, thereby adjusting the gap between the active roller 37 and the guide rollers 31, so as to facilitate the placement of the material 6 between the active roller 37 and the guide rollers 31. When the laser cleaning equipment is performing inspection, the active roller 37 will stop running. At this time, it will not move up and down, but will stay at the lowest position and stop rotating to ensure that the inspection process can be carried out stably.

[0067] The flattening roller 32 presses against the material 6 to flatten it. The guide roller 33 is positioned close to the feed roller 1, and the material 6 is wound around it. The guide roller 33 has a third detector for detecting the position of the material 6. The material 6 is wound around the metering roller 34 to measure its length. The material 6 is wound around the measuring roller 35 to measure its tension. The pressure roller 36 is opposite to the take-up roller 2 and forms a gap between them for the material 6 to pass through.

[0068] Two flattening rollers 32 can be provided, one near the feeding roller 1 and the other near the receiving roller 2. They can press the surface of the material 6 to prevent wrinkles from forming. The correction roller 33 is located near the receiving roller 2 and is equipped with a third detector, which can be an infrared sensor. It can detect whether the edge of the material 6 is deviated during the conveying process. The feeding roller 1 has translational capability. When the third sensor detects that the material 6 is deviated, the feeding roller 1 can move in a specified direction to adjust the conveying direction of the material 6.

[0069] Both the metering roller 34 and the measuring roller 35 are positioned close to the feeding roller 1 and between the feeding roller 1 and the second buffer roller 52, so that the material 6 continuously passes through the metering roller 34 and the measuring roller 35. The metering roller 34 is equipped with an encoder and other structures, which can continuously measure the length of the material 6 by calculating the number of rotations of the metering roller 34. The measuring roller 35 is equipped with a pressure sensor, which can continuously measure the tension of the material 6 by detecting the clamping force between the material 6 and the measuring roller 35, and continuously feeds the obtained data back to the background system. In the background system, the operator inputs a preset value, and the real-time tension data detected is automatically compared with the preset value. The background system can then actively adjust the output torque of each roller according to the difference, thereby adjusting the corresponding real-time tension to eliminate the difference.

[0070] The pressure roller 36 is set in correspondence with the receiving roller 2, and a gap is formed between the two to allow the material 6 to pass through, so as to ensure that the material 6 can fit tightly with the receiving roller 2 after collection, thereby improving the material collection quality.

[0071] Optionally, the receiving roller 2 can be close to or far from the discharging roller 1.

[0072] Specifically, changing the position of the take-up roller 2 can adjust the tension of the material 6 and also adjust the distance between it and the pressure roller 36, thereby further improving the quality of material collection and ensuring that the material 6 can adhere tightly to the take-up roller 2. The adjustment of the take-up roller 2 can be achieved by a servo motor in conjunction with a lead screw and other structures. The specific design can be based on the actual adjustment range and installation space, and this invention does not impose any limitations.

[0073] Optionally, the buffer assembly 5 includes a first buffer roller 51 and a second buffer roller 52. The first buffer roller 51 is slidably disposed between the laser cleaning assembly 4 and the discharge roller 1, and the first buffer roller 51 can be moved away from the cleaning path to store the material 6; the second buffer roller 52 is slidably disposed between the laser cleaning assembly 4 and the receiving roller 2, and the second buffer roller 52 is close to the cleaning path to release the material 6.

[0074] Specifically, the first buffer roller 51 is positioned close to the feed roller 1 and can slide vertically. This sliding can be achieved by a servo motor in conjunction with a screw or other transmission structure. The speed and amplitude of the sliding can be designed according to the amount of material to be buffered. The second buffer roller 52 is positioned in the same direction as the first buffer roller 51, and will not be described further here.

[0075] By setting a first buffer roller 51, when the material 6 passes through the cleaning path, the first buffer roller 51 is close to the cleaning path and does not buffer the material 6. During cleaning, the first buffer roller 51 moves downward, so that the material 6 released by the discharge roller 1 is pressed down by the first buffer roller 51 and carried away from the cleaning path to form a buffer, so that the material 6 that has just been released will not continue to be conveyed to the laser cleaning component 4. By setting a second buffer roller 52, when the material 6 passes through the cleaning path, the second buffer roller 52 is away from the cleaning path, so that the material 6 is lifted when wrapped around the second buffer roller 52 to form a buffer. During cleaning, the second buffer roller 52 moves upward, so that the material 6 passing through the laser cleaning component 4 is close to the cleaning path and the buffered material 6 is released. At this time, the take-up roller 2 can reel in this part of the material 6 to ensure that the material 6 corresponding to the laser cleaning component 4 is not reeled in, thereby ensuring that the material 6 corresponding to the laser cleaning component 4 remains stationary.

[0076] Optionally, the laser cleaning assembly 4 includes a first cleaner 41 and a second cleaner 42. The first cleaner 41 is used for laser cleaning a first side of the material 6; the second cleaner 42 is opposite to the first cleaner 41 and is used for laser cleaning a second side of the material 6.

[0077] Specifically, both the first cleaner 41 and the second cleaner 42 are laser cleaners, which can generate specific lasers to treat defects such as crater spots formed on the surface of the material 6, so as to reduce or eliminate the defects, thereby effectively improving the quality of the material 6 and ensuring that the material 6 meets the subsequent production requirements.

[0078] Optionally, the laser cleaning equipment also includes a first detector 10. The first detector 10 is disposed near the feed roller 1 and located between the buffer assembly 5 and the first cleaner 41 to detect uncleaned material 6 when it is stationary.

[0079] Specifically, the first detector 10 can be a CCD detection module, which can take pictures of both sides of the material 6 to obtain image information of both sides of the material 6. By analyzing the image information, the size, shape, and location of defects in the specified area can be determined. Based on the defect information, the background control system can control the power and other parameters of the laser cleaning component 4, so that the laser cleaning component 4 can process defects in a more suitable state to improve the cleaning effect. By setting the first detector 10 behind the first buffer roller 51, the first detector 10 can take pictures and detect when the material 6 is stationary, which effectively improves the accuracy of the defect information obtained by the first detector 10. The background control system can then adjust the parameters of the laser cleaning component 4 more accurately.

[0080] Optionally, the laser cleaning equipment also includes a second detector 20. The second detector 20 is located near the receiving roller 2 and between the second cleaner 42 and the buffer assembly 5 to detect the cleaned material 6 when it is stationary.

[0081] Specifically, the second detector 20 can also be a CCD detection module, which can take pictures of both sides of the material 6 to obtain image information of both sides of the material 6 after cleaning. By analyzing the image information, it can be determined whether the defects in the area after cleaning meet the requirements, and the results are fed back to the background control system. The background control system can further adjust the laser cleaning component 4 according to the corresponding information to ensure that the subsequent cleaning process meets the requirements.

[0082] Optionally, the laser cleaning equipment further includes a first transition roller 8 and a second transition roller 9. The first transition roller 8 corresponds to the first cleaner 41; the second transition roller 9 corresponds to the second cleaner 42; wherein, the material 6 cleaned by the first cleaner 41 is wound around the first transition roller 8 and the second transition roller 9 and then corresponds to the second cleaner 42.

[0083] Specifically, the first transition roller 8 and the second transition roller 9 are both located below the laser cleaning assembly 4. The upper side of the first cleaner 41 on the material 6 extends downwards to bypass the first transition roller 8, then bypasses the second transition roller 9, and extends upwards to pass through the second cleaner 42. The first transition roller 8 corresponds to the first cleaner 41, ensuring that one side of the material 6 is aligned with the first cleaner 41. Similarly, the second transition roller 9 ensures that the other side of the material 6 is aligned with the second cleaner 42, thus ensuring that the laser cleaning assembly 4 can effectively clean the material 6. The first transition roller 8 and the second transition roller 9 can be moved to adjust their relative position and spacing with the laser cleaning assembly 4, ensuring that the material 6 is aligned with the laser cleaning assembly 4. The specific adjustment method and structure can be designed according to the actual installation position, and this invention is not limited thereto. To ensure the safety of the material 6 at a low position, a protective platform 200 is provided on the outside of the first transition roller 8 and the second transition roller 9.

[0084] Reference Figure 4 and Figure 5 In summary, the process flow for cleaning one side of material 6 is as follows: feeding roller 1 feeds material, flattening roller 32 flattens material 6, correction roller 33 corrects material 6, buffer material 6, first inspection of material 6, one side surface cleaning, buffer material 6, measuring the length of material 6, measuring the tension of material 6, flattening roller 32 flattens material 6, pressure roller 36 presses down on material 6, and take-up roller 2 takes up material 6.

[0085] The process flow for cleaning the double-sided surfaces of material 6 is as follows: feeding roller 1 feeds material, flattening roller 32 flattens material 6, correction roller 33 corrects material 6, buffers or releases material 6, first inspection of material 6, first-side cleaning, second-side cleaning, second inspection of material 6, release or buffers material 6, measures the length of material 6, measures the tension of material 6, flattening roller 32 flattens material 6, pressure roller 36 presses down on material 6, and take-up roller 2 takes up material 6.

[0086] Reference Figure 6 The cleaning method is applied to the laser cleaning equipment described in the above embodiments, and the method includes:

[0087] Step S1: Continuously convey materials along the cleaning path and buffer the materials passing through the laser cleaning component.

[0088] The cleaning path is formed by the layout of the conveyor roller group. After the material is placed on the feeding roller, one side of it can pass through the cleaning path and the laser cleaning component. The material that passes through the laser cleaning component can be buffered by the buffer component in advance and then wrapped around the receiving roller. When cleaning starts, the feeding roller can continuously feed the material and the receiving roller can continuously collect the material without repeated start and stop.

[0089] Step S2: When the material is cleaned, the continuously released material is buffered and the material that has been buffered by the laser cleaning component is released, so that the material at the cleaning position remains stationary until the cleaning is completed.

[0090] During the material conveying process, when a portion of the material is aligned with the laser cleaning component, it indicates that the material has entered the cleaning position. At this point, the material buffer continuously released by the discharge roller will prevent the material from entering the laser cleaning component. Since a portion of the material has already been buffered by the laser cleaning component, this portion of the material is released and the take-up roller retracts it, thus keeping the material at the cleaning position stationary and achieving static alignment between the portion of the material and the laser cleaning component. At this point, the laser cleaning component can clean the material.

[0091] Step S3: When cleaning is complete, continue conveying the material along the cleaning path so that the next part of the material enters the cleaning position.

[0092] After the cleaning of this part of the material is completed, the material corresponding to the laser cleaning component continues to be conveyed. The material that has been cleaned by the laser cleaning component is buffered, and the buffered uncleaned material can be released and enter the cleaning position corresponding to the laser cleaning component. This process is repeated continuously to complete the cleaning of the entire material.

[0093] Through the above steps S1 to S3, the material can be continuously released and rewound during laser cleaning. By pre-buffering and releasing the material, static alignment between the material and the laser cleaning components is achieved, enabling precise laser cleaning. The cleaning process does not require interruption, allowing the cleaning of various areas of the material to proceed continuously. This effectively saves cleaning time, improves cleaning efficiency, and ensures that no local stress concentration occurs during the cleaning process, effectively reducing the possibility of pinholes on the film surface, thereby effectively improving the quality of the material after cleaning.

[0094] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A laser cleaning equipment, characterized in that, include: Feed roller (1), used to place material (6); A take-up roller (2) is arranged opposite to the feed roller (1) and is used to take up the material (6); A transfer roller group (3) is arranged between the feeding roller (1) and the receiving roller (2) to form a cleaning path for transferring material (6). After passing through the cleaning path, the material (6) is wrapped around the receiving roller (2). Laser cleaning assembly (4) is used to perform laser cleaning on the surface of material (6); A buffer component (5) is provided, and material (6) is wound around the buffer component (5). The buffer component (5) can store unwashed material (6) and release material (6) that has passed through the laser cleaning component (4) and been buffered, so that the material (6) corresponding to the laser cleaning component (4) is partially kept still.

2. The laser cleaning equipment according to claim 1, characterized in that, The caching component (5) includes: The first buffer roller (51) is slidably disposed between the laser cleaning assembly (4) and the feeding roller (1), and the first buffer roller (51) can be moved away from the cleaning path to store material (6); The second buffer roller (52) is slidably disposed between the laser cleaning assembly (4) and the receiving roller (2), and the second buffer roller (52) is close to the cleaning path to release the material (6).

3. The laser cleaning equipment according to claim 1, characterized in that, The laser cleaning assembly (4) includes: First cleaner (41) for laser cleaning the first side of material (6); The second cleaner (42) is located opposite the first cleaner (41) and is used for laser cleaning of the material (6) on the second side.

4. The laser cleaning equipment according to claim 3, characterized in that, The laser cleaning equipment also includes: A first detector (10) is disposed near the feed roller (1) and located between the buffer assembly (5) and the first cleaner (41) to detect unwashed material (6) when it is stationary.

5. The laser cleaning equipment according to claim 3, characterized in that, The laser cleaning equipment also includes: A second detector (20) is disposed near the receiving roller (2) and located between the second cleaner (42) and the buffer assembly (5) to detect the cleaned material (6) when it is stationary.

6. The laser cleaning equipment according to claim 3, characterized in that, The laser cleaning equipment also includes: The first transition roller (8) corresponds to the first cleaner (41); The second transition roller (9) corresponds to the second cleaner (42); The material (6) cleaned by the first cleaner (41) is wound around the first transition roller (8) and the second transition roller (9) and then corresponds to the second cleaner (42).

7. The laser cleaning equipment according to any one of claims 1 to 6, characterized in that, The transfer roller group (3) includes: A guide roller (33) is disposed near the feed roller (1) and the material (6) is wound around the guide roller (33), the guide roller (33) having a third detector for detecting the position of the material (6); and / or A flattening roller (32) is used to press against the material (6) to flatten the material (6); and / or Measuring roller (34), around which material (6) is wound to measure the length of material (6); and / or A measuring roller (35) around which material (6) is wound to measure the tension of material (6); and / or The pressure roller (36) is opposite to the receiving roller (2) and forms a gap between them for the material (6) to pass through.

8. The laser cleaning equipment according to any one of claims 1 to 6, characterized in that, The transfer roller group (3) includes: Multiple guide rollers (31) are distributed at intervals along the cleaning path; some of the guide rollers (31) are movably connected to an active roller (37), and a gap is formed between the active roller (37) and the guide roller (31) for material (6) to pass through. The active roller (37) can move closer to or away from the guide roller (31).

9. The laser cleaning equipment according to any one of claims 1 to 6, characterized in that, The receiving roller (2) can be close to or far from the discharging roller (1); and / or Both the feeding roller (1) and the receiving roller (2) are equipped with material detectors (7) for detecting the roll diameter.

10. A laser cleaning method, characterized in that, The laser cleaning apparatus used in any one of claims 1 to 9 comprises: The material (6) is continuously conveyed along the cleaning path and the material (6) passing through the laser cleaning component (4) is buffered; When the cleaning part of the material (6) enters the cleaning position, the continuously released material (6) is buffered and the material (6) that has been buffered by the laser cleaning component (4) is released so that the material (6) in the cleaning position remains stationary until the laser cleaning is completed. When laser cleaning is completed, the material (6) continues to be conveyed along the cleaning path so that the next part of the material (6) enters the cleaning position.

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