Laser etching equipment

Abstract

The utility model belongs to the technical field of battery production and processing, and particularly relates to laser etching equipment which comprises an unwinding device, a laser etching device and a winding device which are sequentially arranged along an unwinding conveying direction, the laser etching device comprises a laser generation mechanism, a first blowing dust removal mechanism, an ultrasonic generator and a first conveying roller; the ultrasonic generator is communicated with the first blowing dust removal mechanism; the first blowing dust removal mechanism is arranged above the first conveying roller; and the laser generating mechanism is arranged above the first conveying roller. According to the utility model, multiple dust removal effects can be realized; therefore, the effect after laser etching is improved, and the forming precision of the scribed line of the pole piece is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery production and processing technology, and in particular relates to a laser etching device. Background Technology

[0002] Lithium-ion batteries have attracted widespread attention due to their advantages such as high energy density, long lifespan, light weight, and reusability. They are widely used in various products such as mobile phones, laptops, Bluetooth headsets, power tools, and new energy vehicles.

[0003] However, in some existing technologies, laser etching uses pulsed lasers to etch segmented lines; however, this method has poor dust removal effect and there will be obvious dust adhering to the electrode surface, affecting the etching effect, and may even cause the battery to naturally reduce its power when it is not in use. Utility Model Content

[0004] The purpose of this invention is to provide a laser etching device that addresses the shortcomings of existing technologies and solves the technical problem of poor dust removal performance in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A laser etching apparatus includes an unwinding device, a laser etching device, and a rewinding device arranged sequentially along an unwinding conveying direction; the laser etching device includes a laser generating mechanism, a first air blowing dust removal mechanism, an ultrasonic generator, and a first conveying roller; the ultrasonic generator is connected to the first air blowing dust removal mechanism; the first air blowing dust removal mechanism is disposed above the first conveying roller; the laser generating mechanism is disposed above the first conveying roller.

[0007] Preferably, the laser generating mechanism includes a lifting drive component and a laser; the lifting drive component is drivenly connected to the laser; and the laser's emission direction is oriented towards the first conveying roller.

[0008] Preferably, the first air blowing dust removal mechanism includes a first air blowing knife and an air blowing conveying pipe; one end of the air blowing conveying pipe is connected to the first air blowing knife; the first air blowing knife is disposed between the laser generating mechanism and the first conveying roller; and the ultrasonic generator is connected to the interior of the first air blowing knife; the first air blowing knife is disposed towards the first conveying roller.

[0009] Preferably, the first air-blowing knife is provided with a positive pressure channel and at least two negative pressure channels; the positive pressure channel is disposed between two adjacent negative pressure channels.

[0010] Preferably, the laser etching equipment further includes a conveying dust removal device and a roller brush dust removal device; the conveying dust removal device is disposed between the laser etching device and the unwinding device; the roller brush dust removal device is disposed between the laser etching device and the winding device.

[0011] Preferably, the conveying dust removal device includes a first support, a second air blowing dust removal mechanism, and a roller brush dust removal mechanism; the second air blowing dust removal mechanism is connected to the first support; the roller brush dust removal mechanism is connected to the first support and is disposed inside the second air blowing dust removal mechanism.

[0012] Preferably, the second air blowing dust removal mechanism includes a support plate, a dust extraction pipe, and a second air blowing knife; the roller brush dust removal mechanism is disposed between the support plate and the second air blowing knife; the support plate is provided with at least one guide hole; one end of the dust extraction pipe is connected to the support plate and communicates with the guide hole;

[0013] And / or, the roller brush dust removal device includes a brush roller structure and a rotating motor; the rotating motor is drivenly connected to the brush roller structure; the brush roller structure is disposed on the upper and / or lower sides of the unwinding conveying direction.

[0014] Preferably, the roller brush dust removal mechanism includes a brush roller, a drive wheel, and a drive motor; the drive motor is drivenly connected to the drive wheel; the drive wheel is drivenly connected to the brush roller; and the brush roller is disposed above and / or below the unwinding conveying direction.

[0015] Preferably, the laser etching equipment further includes a two-dimensional view inspection mechanism and a three-dimensional view inspection mechanism; the two-dimensional view inspection mechanism and the three-dimensional view inspection mechanism are sequentially arranged between the laser etching device and the winding device along the unwinding conveying direction.

[0016] Preferably, the two-dimensional view detection mechanism includes a second conveying roller, a light source, a housing, a lateral drive component, and a two-dimensional camera; the housing is provided with a collection window; the light source is disposed inside the opening of the collection window; the second conveying roller is disposed outside the opening of the collection window; the lateral drive component is connected to the inside of the housing and is drivenly connected to the two-dimensional camera; and the two-dimensional camera is positioned facing the opening of the collection window.

[0017] And / or, the three-dimensional view detection mechanism includes a third conveying roller, a three-dimensional camera, and a motion driving component; the motion driving component is drivenly connected to the three-dimensional camera; the third conveying roller is disposed below the motion trajectory of the three-dimensional camera.

[0018] The beneficial effects of this utility model are as follows: This technical solution improves the dust removal speed by performing ultrasonic vibration blowing dust removal simultaneously with laser etching, achieving simultaneous etching and dust removal while preventing dust from accumulating and becoming difficult to remove. This achieves optimal timing and effectiveness for dust removal. Furthermore, it removes even the smallest dust particles deepest in the etching lines after etching, achieving a dual dust removal effect. This improves the post-laser etching effect and enhances the precision of electrode line forming, thereby increasing production efficiency and avoiding subsequent rework or waste. Attached Figure Description

[0019] The following will refer to the appendix. Figures 1-7 This section describes the features, advantages, and technical effects of exemplary embodiments of the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of a laser etching device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a conveying dust removal device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a laser etching device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of an ultrasonic dust removal device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a roller brush dust removal device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of a two-dimensional view detection mechanism according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a three-dimensional view detection mechanism according to an embodiment of the present invention.

[0027] In the diagram: 100-Unwinding device; 200-Conveying dust removal device; 210-First support; 220-Second air blowing dust removal mechanism; 221-Support plate; 222-Guide hole; 223-Dust extraction pipe; 230-Second air blowing knife; 240-Roller brush dust removal mechanism; 241-Brush roller; 242-Drive wheel; 243-Drive motor; 300-Laser etching device; 310-Front-side etching mechanism; 320-Reverse-side etching mechanism; 301-Lifting drive component; 302-Laser; 303-Laser generating mechanism; 304-First conveying roller; 305-Second support; 306-First air blowing knife; 3 601-Positive pressure channel; 3602-Negative pressure channel; 307-Air blowing conveying pipe; 308-First air blowing dust removal mechanism; 309-Ultrasonic generator; 410-Two-dimensional view detection mechanism; 411-Second conveying roller; 412-Light source; 413-Housing shell; 414-Transverse drive component; 415-Two-dimensional camera; 416-Acquisition window; 420-Three-dimensional view detection mechanism; 421-Third conveying roller; 422-Three-dimensional camera; 423-Motion drive component; 500-Rewinding device; 600-Roller brush dust removal device; 610-Brush roller structure; 620-Rotating motor; A-Unwinding conveying direction. Detailed Implementation

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or multiple situations existing alone. In addition, the character " / " in this document generally indicates that the related objects before and after are in an "or" relationship.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0033] The following is in conjunction with the appendix Figures 1 to 7 The present invention will be described in further detail, but this is not intended to limit the scope of the present invention.

[0034] like Figure 1 and 3 As shown, in one embodiment of this utility model, the laser etching equipment includes an unwinding device 100, a laser etching device 300, and a rewinding device 500 arranged sequentially along the unwinding conveying direction A. The laser etching device 300 includes a laser generating mechanism 303, a first air blowing dust removal mechanism 308, an ultrasonic generator 309, and a first conveying roller 304. The first conveying roller 304 is used to convey the electrode structure. The ultrasonic generator 309 is connected to the first air blowing dust removal mechanism 308. The first air blowing dust removal mechanism 308 is disposed above the first conveying roller 304. The laser generating mechanism 303 is disposed above the first conveying roller 304.

[0035] The technical solution of this utility model improves the dust removal speed by performing ultrasonic vibration blowing dust removal simultaneously with laser etching, thus achieving simultaneous etching and dust removal and preventing dust from accumulating and becoming difficult to remove. This achieves the optimal timing and effect for dust removal. Furthermore, it removes even the smallest dust particles from the deepest parts of the etching lines after etching, achieving a dual dust removal effect. This improves the effect after laser etching and enhances the precision of electrode line forming, thereby increasing production efficiency and avoiding subsequent rework or waste.

[0036] In some implementation methods, such as Figure 1As shown, the unwinding device 100 is an unwinding cylinder; the winding device 500 is a winding cylinder. This structure improves the stability of initial storage by utilizing the circular storage function of the unwinding cylinder, avoiding compression, bending, and damage to the electrode sheet; and also improves the stability of etching storage by utilizing the circular storage function of the winding cylinder, avoiding compression, bending, and damage to the electrode sheet.

[0037] In some implementation methods, such as Figure 1 As shown, the laser etching apparatus 300 includes a front etching mechanism 310 and a back etching mechanism 320 arranged sequentially along the unwinding and conveying direction A; and both the front etching mechanism 310 and the back etching mechanism 320 include a laser generating mechanism 303, a first air blowing dust removal mechanism 308 and a first conveying roller 304; mainly used to etch lines on the A and B sides of the electrode sheet.

[0038] Specifically, in some implementations, such as Figure 1 and 3 As shown, the laser generating mechanism 303 includes a lifting drive component 301 and a laser 302. The lifting drive component 301 is connected to the second bracket 305. The lifting drive component 301 is driven to drive the laser 302, causing the laser 302 to move towards or away from the first conveying roller 304. The emission direction of the laser 302 is oriented towards the first conveying roller 304. The lifting drive component 301 can be a lifting drive cylinder or a lifting drive screw. The laser 302 can be a continuous wave laser, preferably a single-mode continuous fiber laser. A continuous laser is a device capable of generating a continuously output laser beam. Its working principle is based on the laser amplification process, where a laser medium is excited and amplified, ultimately producing a laser beam with specific wavelength and characteristics; thereby etching lines on surfaces A and B of the electrode.

[0039] Specifically, in some implementations, such as Figure 1 and 3 As shown, the first air-blowing dust removal mechanism 308 includes a first air-blowing knife 306 and an air-blowing conveying pipe 307; one end of the air-blowing conveying pipe 307 is connected to the first air-blowing knife 306; the other end of the air-blowing conveying pipe 307 is connected to a first air-blowing fan; the first air-blowing knife 306 is disposed between the laser generating mechanism 303 and the first conveying roller 304; and the ultrasonic generator 309 is connected to the interior of the first air-blowing knife 306; the first air-blowing knife 306 is oriented towards the first conveying roller 304. The first air-blowing knife 306 is selected from first air-blowing blades with a cross-section of a triangle, quadrilateral, or trapezoid. In other words, by adding a dust removal area and a first air-blowing dust removal mechanism during laser etching, dust removal can be achieved while etching, thus effectively solving the problem of dust accumulation during etching and achieving the best etching effect.

[0040] Among them, such as Figure 3 and 4 As shown, the first air-blowing knife 306 is provided with a positive pressure channel 3601 and at least two negative pressure channels 3602; the positive pressure channel 3601 is disposed between two adjacent negative pressure channels 3602. That is, the airflow delivered by the air-blowing delivery pipe 307 is combined with the ultrasonic waves generated by the ultrasonic generator 309 to form a high-pressure oscillating wind, and vibrates at ultra-high speed in the positive pressure channel 3601, so that the tiny gaps and holes deep in the electrode surface near the positive pressure channel 3601 vibrate, and together with the independently designed negative pressure channel 3602, effectively and thoroughly remove dirt and dust from the surface of the object.

[0041] Specifically, in some implementations, such as Figure 1 As shown, the laser etching equipment also includes a conveying dust removal device 200 and a roller brush dust removal device 600; the conveying dust removal device 200 is disposed between the laser etching device 300 and the unwinding device 100; the roller brush dust removal device 600 is disposed between the laser etching device 300 and the rewinding device 500. This structure achieves a triple dust removal process through the preliminary dust removal by the conveying dust removal device 200 before etching and the secondary dust removal by the roller brush dust removal device 600 during the conveying process after etching, thereby improving the effect after laser etching and increasing the accuracy of electrode line forming.

[0042] Specifically, in some implementations, such as Figure 1 and 2 As shown, the conveying dust removal device 200 includes a first support 210, a second air-blowing dust removal mechanism 220, and a roller brush dust removal mechanism 240. The second air-blowing dust removal mechanism 220 is connected to the first support 210; the roller brush dust removal mechanism 240 is connected to the first support 210 and is disposed inside the second air-blowing dust removal mechanism 220. In other words, after the roller brush dust removal mechanism 240 removes dust from the electrode sheet before etching, the second air-blowing dust removal mechanism 220 discharges the dust, thereby improving the cleanliness of the electrode sheet surface.

[0043] Among them, such as Figure 2 As shown, the second air blowing dust removal mechanism 220 includes a support plate 221, a dust extraction pipe 223, and a second air blowing knife 230; the support plate 221 and the second air blowing knife 230 are arranged side by side; and the roller brush dust removal mechanism 240 is disposed between the support plate 221 and the second air blowing knife 230; the second air blowing knife 230 is used to connect to the air blowing fan; the support plate 221 is provided with at least one guide hole 222; one end of the dust extraction pipe 223 is connected to the support plate 221 and communicates with the guide hole 222; and the other end of the dust extraction pipe 223 is used to connect to the air extraction fan.

[0044] Among them, such as Figure 2 As shown, the roller brush dust removal mechanism 240 includes a brush roller 241, a drive wheel 242, and a drive motor 243; the drive motor 243 is fixedly connected to the first bracket 210 and is drivenly connected to the drive wheel 242; the drive wheel 242 is drivenly connected to the brush roller 241; the brush roller 241 is disposed above and / or below the unwinding conveying direction A.

[0045] Specifically, in some implementations, such as Figure 1 and 5 As shown, the roller brush dust removal device 600 includes a brush roller structure 610 and a rotating motor 620; the rotating motor 620 is drivenly connected to the brush roller structure 610; the brush roller structure 610 is disposed on the upper and / or lower sides of the unwinding conveying direction A. Wherein, as... Figure 5 As shown, the number of brush roller structures 610 is at least two; the brush roller structures 610 are disposed on the upper and lower sides of the unwinding conveying direction A. Furthermore, the brush roller structure 610 can be a roller and its surface fitted with a brush body. This structure can be used for final dust removal on all processed electrode surfaces after etching, further improving the effect after laser etching and increasing the accuracy of electrode etching.

[0046] Specifically, in some implementations, such as Figure 1 As shown, the laser etching equipment also includes a two-dimensional view inspection mechanism 410 and a three-dimensional view inspection mechanism 420; the two-dimensional view inspection mechanism 410 and the three-dimensional view inspection mechanism 420 are sequentially arranged between the laser etching device 300 and the winding device 500 along the unwinding conveying direction A. This structure uses the two-dimensional view inspection mechanism 410 to perform pinhole detection and appearance dimension inspection on the etched electrode sheet; and uses the three-dimensional view inspection mechanism 420 to detect the depth and width of the etching lines on the electrode sheet, effectively identifying defective products and improving production efficiency.

[0047] In some implementation methods, such as Figure 1 and 6As shown, there are two 2D view detection mechanisms 410; each 2D view detection mechanism 410 includes a second conveying roller 411, a light source 412, a housing 413, a transverse drive component 414, and a 2D camera 415; the housing 413 is provided with a collection window 416; the light source 412 is disposed inside the opening of the collection window 416; the second conveying roller 411 is disposed outside the opening of the collection window 416; the transverse drive component 414 is connected to the inside of the housing 413 and is drivenly connected to the 2D camera 415; and the 2D camera 415 is positioned facing the opening of the collection window 416. The transverse drive component 414 can be a transverse drive cylinder or a transverse drive lead screw. In other words, the online detection of the engraved line size and appearance using the 2D camera 415 improves detection efficiency.

[0048] In some implementation methods, such as Figure 1 and 7 As shown, the three-dimensional view inspection mechanism 420 includes a third conveying roller 421, a three-dimensional camera 422, and a motion drive component 423; the motion drive component 423 is drivenly connected to the three-dimensional camera 422; the third conveying roller 421 is positioned below the motion trajectory of the three-dimensional camera 422. The motion drive component 423 can be a motion drive cylinder or a motion drive lead screw. In other words, by using the three-dimensional camera 422 to perform 3D line scan contour inspection of the electrode sheet, the depth and width of the engraving lines on the electrode sheet can be detected more accurately, effectively identifying defective products.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A laser etching apparatus, characterized in that: The device includes an unwinding device, a laser etching device, and a rewinding device arranged sequentially along the unwinding and conveying direction; the laser etching device includes a laser generating mechanism, a first air blowing dust removal mechanism, an ultrasonic generator, and a first conveying roller; the ultrasonic generator is connected to the first air blowing dust removal mechanism; the first air blowing dust removal mechanism is located above the first conveying roller; the laser generating mechanism is located above the first conveying roller.

2. The laser etching equipment according to claim 1, characterized in that: The laser generating mechanism includes a lifting drive component and a laser; the lifting drive component is driven to the laser; and the laser's emission direction is oriented toward the first conveying roller.

3. The laser etching equipment according to claim 1, characterized in that: The first air blowing dust removal mechanism includes a first air blowing knife and an air blowing conveying pipe; one end of the air blowing conveying pipe is connected to the first air blowing knife; the first air blowing knife is disposed between the laser generating mechanism and the first conveying roller; and the ultrasonic generator is connected to the interior of the first air blowing knife; the first air blowing knife is disposed facing the first conveying roller.

4. The laser etching equipment according to claim 3, characterized in that: The first air-blowing knife is provided with a positive pressure channel and at least two negative pressure channels; the positive pressure channel is located between two adjacent negative pressure channels.

5. The laser etching apparatus according to any one of claims 1 to 4, characterized in that: The laser etching equipment also includes a conveying dust removal device and a roller brush dust removal device; the conveying dust removal device is located between the laser etching device and the unwinding device; the roller brush dust removal device is located between the laser etching device and the winding device.

6. The laser etching equipment according to claim 5, characterized in that: The conveying dust removal device includes a first support, a second air blowing dust removal mechanism, and a roller brush dust removal mechanism; the second air blowing dust removal mechanism is connected to the first support; the roller brush dust removal mechanism is connected to the first support and is disposed inside the second air blowing dust removal mechanism.

7. The laser etching equipment according to claim 6, characterized in that: The second air blowing dust removal mechanism includes a support plate, a dust extraction pipe, and a second air blowing knife; the roller brush dust removal mechanism is disposed between the support plate and the second air blowing knife; the support plate is provided with at least one guide hole; one end of the dust extraction pipe is connected to the support plate and communicates with the guide hole; And / or, the roller brush dust removal device includes a brush roller structure and a rotating motor; the rotating motor is drivenly connected to the brush roller structure; the brush roller structure is disposed on the upper and / or lower sides of the unwinding conveying direction.

8. The laser etching equipment according to claim 7, characterized in that: The roller brush dust removal mechanism includes a brush roller, a drive wheel, and a drive motor; the drive motor is drivenly connected to the drive wheel; the drive wheel is drivenly connected to the brush roller; the brush roller is positioned above and / or below the unwinding conveyor direction.

9. The laser etching apparatus according to any one of claims 1 to 4, characterized in that: The laser etching equipment further includes a two-dimensional view inspection mechanism and a three-dimensional view inspection mechanism; the two-dimensional view inspection mechanism and the three-dimensional view inspection mechanism are sequentially arranged between the laser etching device and the winding device along the unwinding conveying direction.

10. The laser etching equipment according to claim 9, characterized in that: The two-dimensional view detection mechanism includes a second conveying roller, a light source, a housing, a transverse drive component, and a two-dimensional camera; the housing is provided with a collection window; the light source is disposed inside the opening of the collection window; the second conveying roller is disposed outside the opening of the collection window; the transverse drive component is connected to the inside of the housing and is drivenly connected to the two-dimensional camera; and the two-dimensional camera is positioned facing the opening of the collection window. And / or, the three-dimensional view detection mechanism includes a third conveying roller, a three-dimensional camera, and a motion driving component; the motion driving component is drivenly connected to the three-dimensional camera; the third conveying roller is disposed below the motion trajectory of the three-dimensional camera.

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