A laser engraving machine

Abstract

The application relates to a laser etching machine which comprises unwinding devices, etching devices, dust removal devices, 3D detection devices, CCD detection devices, defective label attaching devices and winding devices. The unwinding devices unwind the pole piece and remove dust and impurities on the surface of the pole piece. The etching devices etch the surface of the pole piece to form etching line grooves on the two end faces of the pole piece. The dust removal devices remove residues on the pole piece. The 3D detection devices detect the depth and width of the etching line grooves. The CCD detection devices detect the appearance of the pole piece. The defective label attaching devices attach labels to the detected defective pole pieces. The winding devices wind the pole piece after removing dust and impurities on the surface of the pole piece. The laser etching machine forms etching line grooves on the positive pole piece, improves the wetting performance of the positive pole piece surface to the electrolyte, improves the electrolyte permeation efficiency of the lithium battery, improves the consistency of the distribution of the electrolyte in the positive pole piece, and is beneficial to the capacity of the lithium battery and the improvement of the cycle life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery production, and in particular to a laser etching machine. BACKGROUND

[0002] Lithium ion batteries have been widely concerned due to their high energy density, long service life, light weight, environmental friendliness and other advantages, and are widely used in mobile phones, notebook computers, digital cameras, electric vehicles, electric tools and new energy vehicles and other products. The initial liquid injection process of lithium ion batteries adopts manual injection in a glove box or a drying box, and the injection efficiency and absorption efficiency are extremely slow. With the development of technology, vacuum injection machines and vacuum and positive pressure cycle injection machines for lithium ion batteries have appeared, which can greatly improve the injection efficiency and production capacity of small capacity batteries such as mobile phone batteries and notebook computer batteries. However, with the development of modern society and the energy crisis and environmental protection problems faced by mankind, people begin to apply lithium ion batteries to the automobile industry to provide driving force for automobiles with zero emissions and zero pollution. The application of lithium ion power batteries in the automobile industry makes people have higher requirements for battery capacity and capacity consistency, so the low injection efficiency and absorption speed again become a major production bottleneck in the lithium ion power battery manufacturing industry, especially for lithium ion power batteries with nano lithium iron phosphate as the positive electrode system, because the positive electrode sheet surface is dense and smooth, the electrolyte is very slow to soak and absorb, which greatly affects the production efficiency and the distribution of electrolyte in the battery, and the uneven distribution of electrolyte in the battery electrode sheet has a great influence on the capacity of the battery and the consistency of the capacity. SUMMARY

[0003] The main purpose of the present application is to provide a laser etching machine to solve the above technical problems, to etch a etching line groove on the positive electrode sheet, so as to improve the uniformity of the distribution of electrolyte in the battery and ensure the consistency of the battery capacity.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] The application discloses a laser etching machine which comprises unwinding devices, etching devices, dust removing devices, 3D detecting devices, CCD detecting devices, defective label attaching devices and winding devices, the unwinding devices unwind the pole piece and remove dust and impurities on the surface of the pole piece, the etching devices etch the surface of the pole piece to form etching line grooves on the two end surfaces of the pole piece, the dust removing devices remove residues on the pole piece, the 3D detecting devices detect the depth and width of the etching line grooves, the CCD detecting devices detect the appearance of the pole piece and etching pinhole leakage, the defective label attaching devices attach labels to the defective pole pieces detected by the 3D detecting devices and the CCD detecting devices, and the winding devices wind the pole piece after removing dust and impurities on the surface of the pole piece.

[0006] As a preferred technical scheme, the unwinding devices comprise a pole piece unwinding mechanism, a first belt receiving platform mechanism, a first brush dust removing mechanism, a first iron removing mechanism and a first tension mechanism, the pole piece unwinding mechanism corrects the pole piece after unwinding, the first belt receiving platform mechanism receives the pole piece after changing the winding, the first brush dust removing mechanism removes dust from the two end surfaces of the pole piece, the first iron removing mechanism removes iron impurities from the two end surfaces of the pole piece, and the first tension mechanism detects and controls tension.

[0007] As a preferred technical scheme, the etching devices comprise a correcting mechanism, two laser etching mechanisms and a second belt receiving platform mechanism, the correcting mechanism corrects the pole piece, the two laser etching mechanisms etch the two end surfaces of the pole piece respectively to orderly form etching line grooves on the two end surfaces of the pole piece, and the second belt receiving platform mechanism processes belt breakage of the pole piece.

[0008] As a preferred technical scheme, the laser etching mechanism comprises a laser assembly, an etching support roller and a dust removing assembly, the dust removing assembly is aligned with the etching support roller, and the laser assembly etches the pole piece located on the etching support roller.

[0009] As a preferred technical scheme, the dust removing devices comprise a first ultrasonic dust removing mechanism, a second ultrasonic dust removing mechanism, a first traction mechanism and a third ultrasonic dust removing mechanism, the first ultrasonic dust removing mechanism and the second ultrasonic dust removing mechanism ultrasonically remove dust from the two end surfaces of the pole piece respectively, the first traction mechanism moves and rolls the pole piece, and the third ultrasonic dust removing mechanism ultrasonically removes dust from the pole piece again.

[0010] As a preferred technical scheme, the 3D detection device comprises a first buffering mechanism, a 3D detection mechanism, a second traction mechanism and a second buffering mechanism, the first buffering mechanism buffers the pole piece before detection, the 3D detection mechanism carries out sampling inspection on the depth and width of the etching line groove, the second traction mechanism moves the pole piece, and the second buffering mechanism buffers the pole piece after detection.

[0011] As a preferred technical scheme, the 3D detection mechanism comprises a detection driving structure, a line spectrum 3D sensor and a fine adjustment structure, the fine adjustment structure is installed on one side of the detection driving structure, the detection driving structure drives the line spectrum 3D sensor to move, and the line spectrum 3D sensor detects the pole piece.

[0012] As a preferred technical scheme, the CCD detection device comprises a second brush dust removal mechanism, a third traction mechanism and a CCD detection mechanism, the second brush dust removal mechanism removes dust from the two end faces of the pole piece, the third traction mechanism moves the pole piece, and the CCD detection mechanism detects the appearance and etching pinhole of the pole piece.

[0013] As a preferred technical scheme, the defective labeling device comprises a third buffering mechanism, a defective labeling mechanism and a fourth traction mechanism, the third buffering mechanism buffers the pole piece before labeling, the defective labeling mechanism labels the pole piece detected as defective by the 3D detection device and the CCD detection device, and the fourth traction mechanism moves the pole piece.

[0014] As a preferred technical scheme, the winding device comprises a second tension mechanism, a second iron removal mechanism, a fourth ultrasonic mechanism and a pole piece winding mechanism, the second tension mechanism detects and controls tension, the second iron removal mechanism removes iron impurities from the two end faces of the pole piece, the fourth ultrasonic mechanism removes dust from the two end faces of the pole piece before winding, and the pole piece winding mechanism winds the pole piece after dust removal.

[0015] The laser etching machine disclosed by the application has the following beneficial effects:

[0016] 1. The consistency of electrolyte distribution in the finished product is good, the etching line groove is formed on the positive pole piece, the wettability of the positive pole piece surface to the electrolyte is improved, the electrolyte permeation efficiency of the lithium battery is improved, the consistency of the electrolyte distribution in the positive pole piece is improved, and the capacity of the lithium battery is improved and the cycle life is improved;

[0017] 2. The etching efficiency is high, the galvanometer adopts a high-speed galvanometer, the etching efficiency is greater than or equal to 25 m / min, the production efficiency is high, and the stability is good;

[0018] 3. Strong dust removal effect, eight positive and negative ultrasonic dust removal mechanisms, four iron removal mechanisms and two brush dust removal mechanisms are adopted, the dust removal capacity of foreign matters with a particle size of 3-5 mu m and above is greater than 99.5%, and the dust removal capacity of foreign matters with a particle size of 0.5-3 mu m is greater than 98%;

[0019] 4. Strong compatibility, compatible with edge margin process and through etching process;

[0020] 5. Automation degree: no manual operation is needed in the pole piece roll changing process, which can reduce the risk of manual operation failure and labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the laser etching machine related to embodiment 1 of the present application;

[0022] Figure 2 It is a schematic view of the pole piece etched by the edge margin process related to embodiment 1 of the present application;

[0023] Figure 3 It is a structure schematic view of the laser etching mechanism related to embodiment 1 of the present application;

[0024] Figure 4 It is a working schematic view of the laser etching mechanism related to embodiment 1 of the present application;

[0025] Figure 5 It is a side view of the first ultrasonic dust removal mechanism related to embodiment 1 of the present application;

[0026] Figure 6 It is a structure schematic view of the first ultrasonic dust removal mechanism related to embodiment 1 of the present application;

[0027] Figure 7 It is a side view of the 3D detection mechanism related to embodiment 1 of the present application;

[0028] Figure 8 It is a structure schematic view of the 3D detection mechanism related to embodiment 1 of the present application;

[0029] Figure 9 It is a schematic view of the pole piece etched by the through etching process related to embodiment 2 of the present application;

[0030] Figure 10 It is a side view of the laser etching mechanism related to embodiment 2 of the present application;

[0031] Figure 11 It is a working schematic view of the laser etching mechanism related to embodiment 2 of the present application. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0033] [Example 1]

[0034] As shown in Figure 1 and Figure 2 , a laser etching machine comprises unwinding device 1, etching device 2, dust removal device 3, 3D detection device 4, CCD detection device 5, defective label device 6 and winding device 7. In this embodiment, etching device 2 adopts the edge blanking process. Unwinding device 1 unwinds the pole piece and removes dust and impurities from the surface of the pole piece. Etching device 2 etches the surface of the pole piece to form etching grooves on both end faces of the pole piece, and the etching grooves do not extend to the edge of the pole piece, i.e. the edge of the pole piece is blanked. Dust removal device 3 removes the residue on the pole piece. 3D detection device 4 detects the depth and width of the etching grooves. CCD detection device 5 detects the appearance of the pole piece and the etching pinhole. Defective label device 6 labels the defective pole pieces detected by 3D detection device and CCD detection device. Winding device 7 winds the pole piece after removing dust and impurities from the surface of the pole piece.

[0035] Unwinding device 1 comprises pole piece unwinding mechanism 11, first belt receiving platform mechanism 12, first brush dust removal mechanism 13, first iron removal mechanism 14 and first tension mechanism 15. Pole piece unwinding mechanism 11 corrects the deviation of the pole piece after unwinding. First belt receiving platform mechanism 12 receives the pole piece after changing the roll. First brush dust removal mechanism 13 removes dust from both end faces of the pole piece. First iron removal mechanism 14 is provided with two first iron removal mechanisms 14, which respectively remove iron impurities from both end faces of the pole piece. First tension mechanism 15 detects and controls the tension. First tension mechanism 15 comprises first tension detector 151 and first tension adjuster 152. First tension detector 151 detects the tension of the pole piece. First tension adjuster 152 adjusts the tension of the pole piece.

[0036] Please refer to Figure 3 and Figure 4 , etching device 2 comprises deviation correction mechanism 21, two laser etching mechanisms 22 and second belt receiving platform mechanism 23. Deviation correction mechanism 21 corrects the deviation of the pole piece. Two laser etching mechanisms 22 etch both end faces of the pole piece to orderly form etching grooves on both end faces of the pole piece. Second belt receiving platform mechanism 23 handles the belt breakage of the pole piece.

[0037] The laser etching mechanism 22 comprises a laser assembly 221, an etching support 224, an etching support roller 222 and a dust removal assembly 223, the etching support roller 222 is installed on the etching support 224, the laser assembly 221 and the dust removal assembly 223 are respectively aligned with the etching support roller 222, the laser assembly 221 etches the pole piece on the etching support roller 222, and the dust removal assembly 223 adsorbs the dust generated due to etching, and in the embodiment, the etching support roller 222 adopts a large roller.

[0038] The laser assembly 221 comprises a laser 2211, a galvanometer structure 2212 and a field lens structure 2213, the laser 2211 emits a light beam to the galvanometer structure 2212, the galvanometer structure 2212 periodically shifts to form a shifted light beam, the shifted light beam etches the surface of the pole piece after passing through the field lens structure 2213, the galvanometer structure 2212 comprises a galvanometer 2214, a focal length adjusting structure 2215 and a width adjusting structure 2216, the width adjusting structure 2216 drives the focal length adjusting structure 2215 to move, so as to adjust the etching width of the laser 2211, the focal length adjusting structure 2215 drives the galvanometer 2214 to move, so as to adjust the focal length of the laser etching, and in the embodiment, the focal length adjusting structure 2215 and the width adjusting structure 2216 are motor-driven screw rod movable modules, the galvanometer 2214 adopts a high-speed galvanometer, the etching efficiency is greater than or equal to 25 m / min, the production efficiency is high, and the stability is good.

[0039] The dust removal assembly 223 comprises a dust removal support 2234, a dust removal driving cylinder 2231, a dust removal guide rail 2233 and a dust remover 2232, the dust removal driving cylinder 2231 and the dust removal guide rail 2233 are installed on the dust removal support 2234, the dust removal driving cylinder 2231 drives the dust remover 2232 to move along the dust removal guide rail 2233, and the dust remover 2232 generates negative pressure to adsorb the impurities generated due to etching.

[0040] The dust removal device 3 comprises a first ultrasonic dust removal mechanism 31, a second ultrasonic dust removal mechanism 32, a first traction mechanism 33 and a third ultrasonic dust removal mechanism 34, the first ultrasonic dust removal mechanism 31, the second ultrasonic dust removal mechanism 32 and the third ultrasonic dust removal mechanism 34 are respectively provided with two, the first ultrasonic dust removal mechanism 31 and the second ultrasonic dust removal mechanism 32 respectively perform ultrasonic dust removal on the two end faces of the pole piece, the first traction mechanism 33 pulls the pole piece to move and rolls the pole piece, and the third ultrasonic dust removal mechanism 34 performs ultrasonic dust removal on the pole piece again, a total of eight ultrasonic dust removal mechanisms are used for dust removal, the foreign matter removal capacity is strong, the dust removal capacity for foreign matters with a particle size of 3-5 μm and above is greater than 99.5%, and the dust removal capacity for foreign matters with a particle size of 0.5-3 μm is greater than 98%.

[0041] Please combine Figure 5 and Figure 6As shown, the first ultrasonic dust removal mechanism 31, the second ultrasonic dust removal mechanism 32 and the third ultrasonic dust removal mechanism 34 have the same structure, and in this embodiment, the first ultrasonic dust removal mechanism 31 is taken as an example for description, the first ultrasonic dust removal mechanism 31 comprises a dust removal support 311, a dust removal driving cylinder 312, a dust removal mounting seat 313, a dust removal guide rail 314, a dust removal sliding block 315 and a dust remover 316, the dust remover 316 is fixedly arranged on one end surface of the dust removal mounting seat 313, the dust removal guide rail 314 is fixedly arranged on the other end surface of the dust removal mounting seat 313, the dust removal sliding block 315 and the dust removal driving cylinder 312 are fixedly arranged on the dust removal support 311, the dust removal sliding block 315 moves along the dust removal guide rail 314, and the dust removal driving cylinder 312 drives the dust removal mounting seat 313 to move relative to the dust removal sliding block 315, so as to drive the dust remover 316 to approach the pole piece, thereby performing ultrasonic dust removal on the pole piece.

[0042] The 3D detection device 4 comprises a first buffering mechanism 41, a 3D detection mechanism 42, a second traction mechanism 43 and a second buffering mechanism 44, the first buffering mechanism 41 buffers the pole piece before detection, the 3D detection mechanism 42 performs sampling inspection on the depth and width of the etching line groove, the second traction mechanism 43 moves the pole piece, and the second buffering mechanism 44 buffers the pole piece after detection.

[0043] Please refer to Figure 7 and Figure 8 As shown, the 3D detection mechanism 42 comprises a detection driving structure 421, a line spectrum 3D sensor 422 and a fine adjustment structure 423, the fine adjustment structure 423 is installed on one side of the detection driving structure 421, the detection driving structure 421 drives the line spectrum 3D sensor 422 to reciprocate, and the line spectrum 3D sensor 422 detects the pole piece, in this embodiment, the detection driving structure 421 is a motor-driven screw rod movable module, the fine adjustment structure 423 can adjust the actual position of the line spectrum 3D sensor 422 during detection, when the pole piece stops at the detection position, the detection driving structure 421 drives the line spectrum 3D sensor 422 to reciprocate along the width direction, the line spectrum 3D sensor 422 detects the pole piece, so as to detect the depth and width of the etching line groove, and the defective products are fed back to the defective labeling device 6.

[0044] The CCD detection device 5 comprises a second brush dust removal mechanism 51, a third traction mechanism 52 and a CCD detection mechanism 53, the second brush dust removal mechanism 51 removes dust from the two end surfaces of the pole piece, the third traction mechanism 52 moves the pole piece, the CCD detection mechanism 53 detects the appearance and etching needle hole of the pole piece, and the defective products are fed back to the defective labeling device 6.

[0045] The bad labeling device 6 comprises a third buffering mechanism 61, a bad labeling mechanism 62 and a fourth traction mechanism 63. The third buffering mechanism 61 buffers the pole piece before labeling. The bad labeling mechanism 62 statically labels the pole piece detected as a defective product by the 3D detection device 4 and the CCD detection device 5. The fourth traction mechanism 63 pulls the pole piece to move.

[0046] The winding device 7 comprises a second tension mechanism 71, a second iron removal mechanism 72, a fourth ultrasonic mechanism 73 and a pole piece winding mechanism 74. The second tension mechanism 71 detects and controls the tension. The second iron removal mechanism 72 and the fourth ultrasonic mechanism 73 are provided with two respectively. The two second iron removal mechanisms 72 remove iron impurities from the two end faces of the pole piece. The two fourth ultrasonic mechanisms 73 perform ultrasonic dust removal on the two end faces of the pole piece before winding. The pole piece winding mechanism 74 winds the pole piece after dust removal.

[0047] [Embodiment 2]

[0048] As shown in Figure 1 and Figure 9 , a laser etching machine comprises a unwinding device 1, an etching device 2, a dust removal device 3, a 3D detection device 4, a CCD detection device 5, a bad labeling device 6 and a winding device 7. In this embodiment, the etching device 2 adopts a through etching process. The unwinding device 1 unwinds the pole piece and removes dust and impurities from the surface of the pole piece. The etching device 2 etches the surface of the pole piece to form etching line grooves on the two end faces of the pole piece, and the etching line grooves cross the width of the pole piece, i.e. the edge of the pole piece is not white. The dust removal device 3 removes the residues on the pole piece. The 3D detection device 4 detects the depth and width of the etching line grooves. The CCD detection device 5 detects the appearance and etching pinhole of the pole piece. The bad labeling device 6 labels the defective pole piece detected by the 3D detection device and the CCD detection device. The winding device 7 winds the pole piece after removing dust and impurities from the surface of the pole piece.

[0049] The unwinding device 1 comprises a pole piece unwinding mechanism 11, a first belt receiving platform mechanism 12, a first brush dust removal mechanism 13, a first iron removal mechanism 14 and a first tension mechanism 15. The pole piece unwinding mechanism 11 corrects the deviation of the pole piece after unwinding. The first belt receiving platform mechanism 12 receives the pole piece after changing the roll. The first brush dust removal mechanism 13 removes dust from the two end faces of the pole piece. The first iron removal mechanism 14 is provided with two respectively. The two first iron removal mechanisms 14 remove iron impurities from the two end faces of the pole piece respectively. The first tension mechanism 15 detects and controls the tension. The first tension mechanism 15 comprises a first tension detector 151 and a first tension adjuster 152. The first tension detector 151 detects the tension of the pole piece. The first tension adjuster 152 adjusts the tension of the pole piece.

[0050] Please refer to Figure 10and Figure 11 As shown in the figure, the etching device 2 comprises a deviation rectifying mechanism 21, two laser etching mechanisms 22 and a second tape connecting platform mechanism 23. The deviation rectifying mechanism 21 rectifies the pole piece. The two laser etching mechanisms 22 etch the two end faces of the pole piece respectively to form etching line grooves in order on the two end faces of the pole piece. The second tape connecting platform mechanism 23 connects the tape in the case of tape breakage.

[0051] The laser etching mechanism 22 comprises a laser assembly 221, an etching support 224, two etching support rollers 222 and a dust removal assembly 223. The two etching support rollers 222 are installed on the etching support 224, and the pole piece is transmitted between the two etching support rollers 222. The laser assembly 221 and the dust removal assembly 223 are aligned with the etching support rollers 222 respectively. The laser assembly 221 etches the pole piece on the etching support rollers 222. The dust removal assembly 223 adsorbs the dust generated due to etching. In this embodiment, the etching support rollers 222 are small rollers, and the etching point position is suspended to avoid the laser assembly 221 damaging the etching support rollers 222.

[0052] The laser assembly 221 comprises a laser 2211, a galvanometer structure 2212 and a field lens structure 2213. The laser 2211 emits a light beam to the galvanometer structure 2212. The galvanometer structure 2212 forms a deflected light beam by periodic deflection. The deflected light beam etches the surface of the pole piece after passing through the field lens structure 2213. The galvanometer structure 2212 comprises a galvanometer 2214, a focal length adjusting structure 2215 and a width adjusting structure 2216. The width adjusting structure 2216 drives the focal length adjusting structure 2215 to move, thereby adjusting the etching width of the laser 2211. The focal length adjusting structure 2215 drives the galvanometer 2214 to move, thereby adjusting the focal length of the laser etching. In this embodiment, the focal length adjusting structure 2215 and the width adjusting structure 2216 are motor-driven screw rod movable modules.

[0053] The dust removal assembly 223 comprises a dust removal support 2234, a dust removal driving cylinder 2231, a dust removal guide rail 2233 and a dust remover 2232. The dust removal driving cylinder 2231 and the dust removal guide rail 2233 are installed on the dust removal support 2234. The dust removal driving cylinder 2231 drives the dust remover 2232 to move along the dust removal guide rail 2233. The dust remover 2232 generates negative pressure to adsorb the impurities generated due to etching.

[0054] The dust removal device 3 comprises a first ultrasonic dust removal mechanism 31, a second ultrasonic dust removal mechanism 32, a first traction mechanism 33 and a third ultrasonic dust removal mechanism 34, two of the first ultrasonic dust removal mechanism 31, the second ultrasonic dust removal mechanism 32 and the third ultrasonic dust removal mechanism 34 are arranged respectively, the first ultrasonic dust removal mechanism 31 and the second ultrasonic dust removal mechanism 32 are used for ultrasonic dust removal on the two end faces of the pole piece, the first traction mechanism 33 is used for traction and rolling of the pole piece, and the third ultrasonic dust removal mechanism 34 is used for ultrasonic dust removal on the pole piece again.

[0055] Please refer to Figure 5 and Figure 6 It is shown that the first ultrasonic dust removal mechanism 31, the second ultrasonic dust removal mechanism 32 and the third ultrasonic dust removal mechanism 34 have the same structure, in order to avoid repetition, the first ultrasonic dust removal mechanism 31 is taken as an example for description, the first ultrasonic dust removal mechanism 31 comprises a dust removal support 311, a dust removal driving cylinder 312, a dust removal mounting seat 313, a dust removal guide rail 314, a dust removal sliding block 315 and a dust remover 316, the dust remover 316 is fixedly arranged on one end face of the dust removal mounting seat 313, the dust removal guide rail 314 is fixedly arranged on the other end face of the dust removal mounting seat 313, the dust removal sliding block 315 and the dust removal driving cylinder 312 are fixedly arranged on the dust removal support 311, the dust removal sliding block 315 moves along the dust removal guide rail 314, the dust removal driving cylinder 312 drives the dust removal mounting seat 313 to move relative to the dust removal sliding block 315, so as to drive the dust remover 316 to move close to the pole piece, thereby performing ultrasonic dust removal on the pole piece.

[0056] The 3D detection device 4 comprises a first buffer mechanism 41, a 3D detection mechanism 42, a second traction mechanism 43 and a second buffer mechanism 44, the first buffer mechanism 41 buffers the pole piece before detection, the 3D detection mechanism 42 performs sampling inspection on the depth and width of the etching line groove, the second traction mechanism 43 moves the pole piece, and the second buffer mechanism 44 buffers the pole piece after detection.

[0057] Please refer to Figure 7 and Figure 8As shown, the 3D detection mechanism 42 comprises a detection driving structure 421, a line spectrum 3D sensor 422 and a fine adjustment structure 423. The detection driving structure 421 drives the line spectrum 3D sensor 422 to move back and forth, and the line spectrum 3D sensor 422 detects the pole piece. In the embodiment, the detection driving structure 421 is a motor-driven screw activity module, and the fine adjustment structure 423 can adjust the detection position of the line spectrum 3D sensor 422. During detection, the pole piece stops when reaching the detection position. The detection driving structure 421 drives the line spectrum 3D sensor 422 to move back and forth along the width direction, and the line spectrum 3D sensor 422 detects the pole piece to detect the depth and width of the etching line groove, and feeds the defective product to the defective labeling device 6.

[0058] The CCD detection device 5 comprises a second brush dust removal mechanism 51, a third traction mechanism 52 and a CCD detection mechanism 53. The second brush dust removal mechanism 51 removes dust from the two end faces of the pole piece. The third traction mechanism 52 moves the pole piece. The CCD detection mechanism 53 detects the appearance and etching needle hole of the pole piece, and feeds the defective product to the defective labeling device 6.

[0059] The defective labeling device 6 comprises a third buffer mechanism 61, a defective labeling mechanism 62 and a fourth traction mechanism 63. The third buffer mechanism 61 buffers the pole piece before labeling. The defective labeling mechanism 62 statically labels the pole piece detected as defective by the 3D detection device 4 and the CCD detection device 5. The fourth traction mechanism 63 moves the pole piece.

[0060] The winding device 7 comprises a second tension mechanism 71, a second iron removal mechanism 72, a fourth ultrasonic mechanism 73 and a pole piece winding mechanism 74. The second tension mechanism 71 detects and controls the tension. The second iron removal mechanism 72 and the fourth ultrasonic mechanism 73 are provided with two respectively. The two second iron removal mechanisms 72 remove iron impurities from the two end faces of the pole piece. The two fourth ultrasonic mechanisms 73 perform ultrasonic dust removal on the two end faces of the pole piece before winding. The pole piece winding mechanism 74 winds the pole piece after dust removal.

[0061] The above-described embodiments are only preferred examples of the present application, and are not intended to limit the scope of the present application. Any equivalent changes or modifications made in accordance with the structure, features and principles described in the patent application scope of the present application shall be included in the patent application scope of the present application.

Claims

1. A laser etching machine, characterized in that: It includes an unwinding device, an etching device, a dust removal device, a 3D detection device, a CCD detection device, a bad labeling device and a winding device. The unwinding device unwinds the electrode and removes dust and impurities from the surface of the electrode. The etching device etches the surface of the electrode to form etching grooves on both end faces of the electrode. The dust removal device removes residues on the electrode. The 3D detection device detects the depth and width of the etching grooves. The CCD detection device detects the appearance of the electrode and etching pinholes. The bad labeling device labels the bad electrode detected by the 3D detection device and the CCD detection device. The winding device removes dust and impurities from the surface of the electrode and then rewinds. The dust removal device includes a first ultrasonic dust removal mechanism, a second ultrasonic dust removal mechanism, a first traction mechanism and a third ultrasonic dust removal mechanism. The first ultrasonic dust removal mechanism and the second ultrasonic dust removal mechanism respectively perform ultrasonic dust removal on the two end surfaces of the electrode piece. The first traction mechanism pulls the electrode piece to move and rolls the electrode piece. The third ultrasonic dust removal mechanism again performs ultrasonic dust removal on the electrode piece. The 3D detection device includes a first buffer mechanism, a 3D detection mechanism, a second traction mechanism, and a second buffer mechanism. The first buffer mechanism buffers the electrode before detection. The 3D detection mechanism performs random inspections on the depth and width of the etched grooves. The second traction mechanism pulls the electrode to move. The second buffer mechanism buffers the electrode after detection. The 3D detection mechanism includes a detection drive structure, a line spectrum 3D sensor and a fine-tuning structure. The fine-tuning structure is installed on one side of the detection drive structure. The detection drive structure drives the line spectrum 3D sensor to move, and the line spectrum 3D sensor detects the pole piece. The CCD detection device includes a second brush dust removal mechanism, a third traction mechanism and a CCD detection mechanism, wherein the second brush dust removal mechanism removes dust from both end surfaces of the electrode, the third traction mechanism pulls the electrode to move, and the CCD detection mechanism detects the appearance of the electrode and etching pinholes; The defective labeling device includes a third cache mechanism, a defective labeling mechanism and a fourth traction mechanism. The third cache mechanism caches the electrode before labeling. The defective labeling mechanism labels the electrode detected as defective by the 3D detection device and the CCD detection device. The fourth traction mechanism pulls the electrode to move.

2. The laser etching machine according to claim 1, characterized in that: The unwinding device includes a pole piece unwinding mechanism, a first splicing platform mechanism, a first brush dust removal mechanism, a first iron removal mechanism and a first tension mechanism. The pole piece unwinding mechanism corrects the pole piece after unwinding, the first splicing platform mechanism splices the pole piece after the roll is changed, the first brush dust removal mechanism removes dust from both end surfaces of the pole piece, the first iron removal mechanism removes iron impurities from both end surfaces of the pole piece, and the first tension mechanism performs tension detection and tension control.

3. The laser etching machine according to claim 1, characterized in that: The etching device includes a correction mechanism, two laser etching mechanisms and a second splicing platform mechanism. The correction mechanism corrects the pole piece, and the two laser etching mechanisms respectively etches the two end faces of the pole piece to form etched line grooves in an orderly manner on the two end faces of the pole piece. The second splicing platform mechanism splices the pole piece if it is broken.

4. The laser etching machine according to claim 3, characterized in that: The laser etching mechanism includes a laser assembly, an etching support roller and a dust removal assembly. The dust removal assembly is aligned with the etching support roller, and the laser assembly etches the pole piece located on the etching support roller.

5. The laser etching machine according to claim 1, characterized in that: The winding device includes a second tension mechanism, a second iron removal mechanism, a fourth ultrasonic mechanism and a pole piece winding mechanism. The second tension mechanism performs tension detection and tension control. The second iron removal mechanism removes iron impurities from both end surfaces of the pole piece. The fourth ultrasonic mechanism performs ultrasonic dust removal on both end surfaces of the pole piece before winding. The pole piece winding mechanism winds up the pole piece after dust removal.

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