Laser cutting device for pole piece cutting

Abstract

The invention discloses a laser cutting device for pole piece cutting, and relates to the technical field of pole piece machining equipment. The pole piece cutting device specifically comprises a conveying assembly used for conveying a pole piece to be machined to a cutting station and outputting the cut pole piece; the laser cutting assembly is arranged on one side of the cutting station and is used for carrying out tab cutting on the to-be-processed pole piece on the cutting station; and the waste belt conveying module is arranged on one side of the cutting station, the pole piece is cut to form a waste belt, and the waste belt conveying module is used for adsorbing the waste belt through the surface of a belt and driving the adsorbed waste belt to move towards the direction of the waste collecting cavity so as to guarantee complete separation of the waste belt and the pole piece. The invention aims to ensure complete separation of a cut waste strip and a pole piece in the process of laser cutting of the pole piece to form a pole lug.

Description

Technical Field

[0001] The present invention relates to the technical field of pole piece processing equipment, and in particular to a laser cutting device for pole piece cutting. Background Art

[0002] As an efficient, lightweight and environmentally friendly energy storage device, lithium-ion batteries are widely used in consumer electronics, electric vehicles, energy storage systems and other fields. One of its core components is the battery pole piece, and the pole tab is the key component connecting the pole piece to the external circuit. Its molding quality has a direct impact on battery performance and safety. In modern lithium-ion battery production, laser cutting technology has become the main technical means for pole tab molding due to its advantages such as high processing precision, small heat-affected zone and low material loss.

[0003] Laser cutting of pole tabs usually uses a high-temperature focused laser to quickly cut the pole foil with a precisely focused high-energy laser beam. However, in actual production, the pole tab will inevitably experience slight ups and downs or jitters during the tape feeding process, causing the focus of the laser beam to deviate from the target position, that is, defocusing. When the laser is defocused, its energy concentration is significantly reduced, and the stability and accuracy of the cutting will be seriously affected. This phenomenon directly leads to two common processing defects: one is incomplete cutting, that is, the waste tape generated after cutting the pole tab cannot be completely separated from the pole tab body; the other is the virtual cutting phenomenon, which is manifested as insufficient depth and width of the cutting area, resulting in the connection of the waste tape with the pole tab part, resulting in uncut weak areas. The residue of the waste tape will seriously interfere with the subsequent pole sheet winding process. When the winding equipment is running at high speed, if the waste tape cannot be separated from the pole tab in time, it is easy to jam the equipment, resulting in frequent equipment shutdowns for maintenance, thereby reducing production efficiency and increasing operating costs. Secondly, the waste tape attached to the outside of the pole tab may be rolled into the battery core during the winding process. Once the waste tape enters the battery cell, it may cause poor contact between the electrodes, or even pierce the separator, causing an internal short circuit, which can easily cause local overheating, thermal runaway, or even fire during battery use, seriously threatening the safety of the battery.

[0004] Therefore, in the process of laser cutting the pole piece to form the pole ear, how to ensure the complete separation of the waste tape and the pole piece after cutting has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of the present invention is to provide a laser cutting device for cutting pole pieces, aiming to ensure the complete separation of the waste tape and the pole piece after cutting during the process of laser cutting the pole piece to form the pole ear.

[0006] In order to achieve the above object, the present invention provides a laser cutting device for cutting a pole piece, comprising: The conveying assembly is used to convey the electrode pieces to be processed to the cutting station and output the cut electrode pieces; A laser cutting assembly, disposed at one side of the cutting station, for cutting the pole lugs of the pole pieces to be processed on the cutting station; and The waste tape conveying module is arranged on one side of the cutting station. After the electrode is cut, a waste tape is formed. The waste tape conveying module is used to adsorb the waste tape through the belt surface and drive the adsorbed waste tape to move toward the waste collection cavity to ensure the complete separation of the waste tape and the electrode.

[0007] Through the coordinated cooperation of the conveying component, laser cutting component and waste tape conveying module, the pole lug cutting of the pole piece can be carried out efficiently. The precise positioning of the conveying component ensures the processing accuracy of the pole piece; the high energy density cutting technology of the laser cutting component makes the cutting edge smooth and burr-free; the vacuum adsorption and movement function of the waste tape conveying module realizes the timely cleaning and thorough separation of the waste tape, effectively avoiding the interference of the waste tape on the processing quality.

[0008] In one embodiment of the present application, the waste tape conveying module comprises: An adsorption box body with an adsorption cavity, wherein a plurality of air ducts connecting the inner and outer spaces of the adsorption cavity are arranged on one side of the adsorption box body facing the electrode piece, and the plurality of air ducts are arranged in parallel to form an air duct group; A fan connected to the adsorption box can extract the air in the adsorption cavity to generate negative pressure in the adsorption cavity; A guide member is sleeved on the adsorption box, the guide member covers the air duct group, and the waste tape is adsorbed on the guide member under the action of the negative pressure of the air duct group; and The driving member is used to drive the guide member to rotate so as to guide the waste tape adsorbed on the guide member to the waste collection chamber. The negative pressure adsorption design of the adsorption box and the air duct group can ensure the stable adsorption of the waste tape and prevent the waste tape from flying or remaining in the cutting area; the negative pressure of the fan enhances the adsorption force of the waste tape, so that the waste tape can be quickly and firmly attached to the surface of the guide member. The rotation or movement of the guide member can effectively guide the waste tape to the waste collection chamber, ensuring the timely cleaning of the waste tape, thereby maintaining the neatness of the entire cutting process and the efficient operation of the equipment.

[0009] In one embodiment of the present application, the fan is provided with a flow regulator capable of adjusting the fan flow rate. By providing the flow regulator on the fan, the fan air volume can be precisely regulated, thereby optimizing the waste tape adsorption and conveying process. The flow regulator can adjust the working state of the fan according to the characteristics of different waste tapes, ensuring that the waste tapes always maintain a stable adsorption state.

[0010] In one embodiment of the present application, a guide portion and a take-away portion are formed on the side of the adsorption box facing the pole piece, the guide portion is parallel to the pole piece surface, one side of the take-away portion is connected to the guide portion, and the side of the take-away portion away from the guide portion is inclined toward the side away from the pole piece, so that the waste tape entering the take-away portion from the guide portion is away from each other between the pole pieces. The design of the guide portion and the take-away portion on the side of the adsorption box facing the pole piece can ensure that the waste tape is effectively separated from the pole piece surface when entering the take-away portion from the guide portion.

[0011] In one embodiment of the present application, the waste tape conveying module also includes an auxiliary film feeding module, which is arranged opposite to the guide part on the adsorption box to form a guide space for the electrode channel. The surface of the auxiliary film feeding module is provided with a rotating belt with a rotation direction opposite to that of the guide and the same rotation speed, which is used to smoothly deliver the cut electrode.

[0012] The auxiliary film feeding module effectively provides a stable conveying channel for the electrode through reasonable cooperation with the guide part of the adsorption box. The design of the rotating belt of the auxiliary film feeding module and the guide rotating in opposite directions and at the same speed helps to smoothly deliver the electrode, avoid entanglement or obstruction between the waste belt and the electrode, and ensure that the cut electrode can smoothly enter the subsequent processing process.

[0013] In one embodiment of the present application, a waste tape dust collection duct assembly is provided above the waste tape collection chamber, and the waste tape dust collection duct assembly is used to suck the waste tape into the duct through negative pressure suction to transport it into the waste tape collection chamber. The waste tape dust collection duct assembly in this embodiment effectively sucks the waste tape into the duct through negative pressure suction and transports it to the waste tape collection chamber, thereby achieving rapid, stable and seamless transportation of the waste tape.

[0014] In one embodiment of the present application, the conveying assembly comprises: A feeding roller, located at the feeding end of the cutting station, used for conveying the electrode pieces to be cut to the cutting station; and The dust removal roller is located at the discharge end of the cutting station and is used to output the cut pole pieces to a designated position.

[0015] By setting the feeding roller and the dust bag roller in the conveying assembly, the electrode to be cut can be accurately conveyed and the electrode can be cleanly output after cutting. The feeding roller ensures that the electrode enters the cutting station accurately and smoothly, avoiding cutting errors caused by unstable conveying. The dust bag roller not only completes the task of conveying the electrode, but also can effectively clean the dust and impurities generated during the cutting process to keep the surface of the electrode clean.

[0016] In one embodiment of the present application, the dust removal roller is provided with a plurality of evenly distributed negative pressure channels, and when the cut pole piece contacts the dust removal roller, the dust on the pole piece can be adsorbed. By providing a plurality of evenly distributed negative pressure channels on the dust removal roller, the dust and powder on the surface of the cut pole piece can be effectively removed.

[0017] In one embodiment of the present application, a dust removal component is also included, and the dust removal component includes: A positive pressure air knife is provided at one side of the cutting station and is used to generate airflow to separate the dust on the electrode from the electrode; A negative pressure recovery pipe is arranged opposite to the positive pressure air knife to generate negative pressure to absorb dust blown off by the positive pressure air knife; and The double-layer dust removal filter is arranged at the air inlet of the negative pressure recovery pipe and is used to absorb dust entering the negative pressure recovery pipe.

[0018] By installing a positive pressure air knife, a negative pressure recovery pipe and a double-layer dust filter in the dust removal component, the dust generated during the cutting process can be effectively removed. The high-pressure airflow generated by the positive pressure air knife can quickly blow off the dust attached to the surface of the electrode, and suck the blown dust into the pipe through the negative pressure recovery pipe to prevent the dust from spreading in the working area. The double-layer dust filter further improves the dust recovery efficiency, avoids pipe blockage, and ensures the efficient operation of the entire dust removal system.

[0019] In one embodiment of the present application, the dust removal assembly further includes: The particle dust eliminator is arranged on one side of the cutting station and can generate ultrasonic waves and / or micro-seismic fluctuations to separate the dust on the surface of the pole piece from the pole piece. The particle dust eliminator effectively separates the dust attached to the surface of the pole piece through ultrasonic waves and / or micro-seismic fluctuations, and can use physical vibration to remove the fine dust on the pole piece without directly contacting the pole piece. It can not only ensure the cleanliness of the pole piece surface and prevent dust from affecting subsequent processes, but also reduce the burden on other dust removal equipment and improve the efficiency of the entire dust removal system.

[0020] The above technical solution can efficiently cut the pole lugs of the pole piece through the coordinated cooperation of the conveying component, the laser cutting component and the waste belt conveying module. The precise positioning of the conveying component ensures the processing accuracy of the pole piece; the high energy density cutting technology of the laser cutting component makes the cutting edge smooth and burr-free; the vacuum adsorption and movement function of the waste belt conveying module realizes the timely cleaning and thorough separation of the waste belt, effectively avoiding the interference of the waste belt on the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1It is a structural schematic diagram of a first embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the medium waste belt conveyor module; Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the waste tape conveying module with a guide member; Figure 4 for Figure 1 An enlarged structural diagram of the auxiliary film feeding module; Figure 5 for Figure 1 Side view of.

[0022] 11. Feed roller; 12. Dust removal bag roller; 20. Laser cutting assembly; 30. Waste belt conveying module; 31. Adsorption box; 32. Guide; 33. Driving member; 34. Fan; 35. Flow regulator; 36. Guide part; 37. Belt separation part; 38. Air duct group; 40. Dust removal assembly; 41. Positive pressure air knife; 42. Particle dust eliminator; 50. Auxiliary sheet feeding module; 51. Rotating belt; 60. Pole piece; 70. Waste belt dust collection duct assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation to the present invention.

[0024] like Figures 1 to 5 As shown, in order to achieve the above-mentioned purpose, the present invention proposes a laser cutting device for cutting a pole piece 60, comprising: A conveying assembly, used to convey the electrode piece 60 to be processed to the cutting station, and output the cut electrode piece 60; A laser cutting assembly 20, disposed at one side of the cutting station, for cutting the tabs of the electrode pieces 60 to be processed on the cutting station; and The waste tape conveying module 30 is arranged on one side of the cutting station. After the pole piece 60 is cut, a waste tape is formed. The waste tape conveying module 30 is used to adsorb the waste tape through the belt surface and drive the adsorbed waste tape to move toward the waste collection cavity to ensure the complete separation of the waste tape and the pole piece 60.

[0025] Specifically, the conveying assembly is arranged at the front end of the device, and is used to convey the electrode piece 60 to be processed from the starting position to the cutting station, and convey the cut electrode piece 60 out of the cutting station after the cutting is completed. The conveying assembly includes a plurality of conveying roller groups that cooperate with each other, and are driven by a motor to achieve precise positioning and smooth conveying. During the conveying process of the electrode piece 60 to be processed, the conveying assembly provides effective control over the flatness and position of the electrode piece 60 to ensure the accuracy and stability of the subsequent cutting process.

[0026] The laser cutting assembly 20 is arranged on one side of the cutting station and is adjacent to the conveying assembly. The laser cutting assembly 20 includes a laser emitter, a cutting head and an optical path adjustment system. The laser emitter generates a high-energy-density laser beam, which is transmitted to the cutting head through the optical path adjustment system for precise cutting. The end of the cutting head is equipped with a focusing lens group, which can focus the laser beam to the pole ear position of the pole piece 60. During the cutting process, the laser cutting assembly 20 controls the cutting path and cutting depth through the CNC system to achieve high-precision cutting of the pole ear.

[0027] The waste tape conveying module 30 is arranged on one side of the cutting station, and is used to effectively convey the waste tape generated during the cutting process. The main structure of the waste tape conveying module 30 includes a vacuum adsorption belt, an adsorption pump and a driving device. There are a number of micropores distributed on the surface of the vacuum adsorption belt. The adsorption pump applies adsorption force to the waste tape through the micropores on the belt, so that the waste tape is close to the belt surface and remains stable. The adsorbed waste tape moves driven by the belt drive and is finally transported to the waste collection chamber. The module design can ensure that the waste tape and the pole piece 60 are completely separated after cutting, thereby avoiding the residual waste tape affecting the quality of the pole piece 60.

[0028] By adopting the above technical solution, the pole piece 60 can be efficiently cut for the pole lug through the coordinated cooperation of the conveying assembly, the laser cutting assembly 20 and the waste tape conveying module 30. The precise positioning of the conveying assembly ensures the processing accuracy of the pole piece 60; the high energy density cutting technology of the laser cutting assembly 20 makes the cutting edge smooth and burr-free; the vacuum adsorption and movement function of the waste tape conveying module 30 realizes the timely cleaning and thorough separation of the waste tape, effectively avoiding the interference of the waste tape on the processing quality.

[0029] In one embodiment of the present application, the waste tape conveying module 30 includes: The adsorption box 31 has an adsorption cavity. A plurality of air ducts are provided on one side of the adsorption box 31 facing the pole piece 60 to conduct the space inside and outside the adsorption cavity. The plurality of air ducts are arranged in parallel to form an air duct group 38. The fan 34 is connected to the adsorption box 31 and can extract the air in the adsorption cavity to generate negative pressure in the adsorption cavity; A guide member 32 is sleeved on the adsorption box 31, and the guide member 32 covers the air duct group 38. The waste tape is adsorbed on the guide member 32 under the negative pressure of the air duct group 38; and The driving member 33 is used to drive the guide member 32 to rotate so as to guide the waste tape adsorbed on the guide member 32 to the waste collection chamber.

[0030] Specifically, an adsorption cavity is provided inside the adsorption box 31. The adsorption cavity is used to generate negative pressure and adsorb the waste tape. A plurality of air ducts are provided on the side of the adsorption box 31 facing the pole piece 60. The plurality of air ducts are arranged in parallel to form an air duct group 38, so that the waste tape can be subjected to uniform suction during the adsorption process, thereby ensuring stable adsorption and transmission of the waste tape.

[0031] The fan 34 is connected to the adsorption box 31 and is responsible for extracting the air in the adsorption cavity. The working principle of the fan 34 is to generate airflow through high-speed rotation, thereby sucking air out of the adsorption cavity to form a negative pressure environment. The negative pressure in the adsorption cavity causes the airflow between the air duct group 38 of the adsorption box 31 and the external environment to form a strong suction effect, firmly adsorbing the waste tape on the surface of the guide 32.

[0032] The guide 32 is sleeved on the adsorption box 31 and covers the air duct group 38. The function of the guide 32 is to adsorb the waste tape under negative pressure and guide it to the waste collection chamber. When the air duct group 38 generates negative pressure, the waste tape adheres to the surface of the guide 32 under the suction of air, and the guide 32 guides the waste tape to move along a predetermined path by rotating or other means until the waste tape is sent to the waste collection chamber.

[0033] The driving member 33 is used to drive the guide member 32 to rotate, so that the waste tape on the guide member 32 is effectively guided to the waste collection chamber.

[0034] The adsorption box 31 is located on the processing path of the waste tape, and its adsorption cavity faces the side of the pole piece 60. The air duct group 38 is arranged in parallel on the adsorption box 31 to form an effective adsorption area. The fan 34 is connected to the adsorption box 31 and adsorbs the waste tape on the guide 32 through negative pressure. The guide 32 is sleeved on the adsorption box 31 and covers the air duct group 38. The surface of the guide 32 is used to adsorb the waste tape and guide the waste tape to the waste collection cavity through rotation. The driving member 33 is connected to the guide 32, and by driving the guide 32 to rotate or move, efficient transportation and cleaning of the waste tape is achieved.

[0035] By adopting the above technical solution, the negative pressure adsorption design of the adsorption box 31 and the air duct group 38 can ensure the stable adsorption of the waste tape, and prevent the waste tape from flying or remaining in the cutting area; the negative pressure of the fan 34 enhances the adsorption force of the waste tape, so that the waste tape can be quickly and firmly attached to the surface of the guide 32. The rotation or movement of the guide 32 can effectively guide the waste tape to the waste collection cavity, ensuring the timely cleaning of the waste tape, thereby maintaining the neatness of the entire cutting process and the efficient operation of the equipment.

[0036] In one embodiment of the present application, the fan 34 is provided with a flow regulator 35 capable of adjusting the flow of the fan 34 .

[0037] Specifically, the flow regulator 35 is installed on the fan 34 and is mainly used to adjust the air volume output of the fan 34. The function of the flow regulator 35 is to adjust the air flow generated by the fan 34 according to actual production needs or the characteristics of different waste tapes, thereby controlling the negative pressure strength in the adsorption box 31. By adjusting the flow of the fan 34, the adsorption force of the waste tape can be accurately controlled to adapt to waste tapes of different sizes, thicknesses or materials.

[0038] By adopting the above technical solution, by setting the flow regulator 35 on the fan 34, the air volume of the fan 34 can be accurately regulated, thereby optimizing the waste tape adsorption and conveying process. The flow regulator 35 can adjust the working state of the fan 34 according to the characteristics of different waste tapes, ensuring that the waste tapes always maintain a stable adsorption state.

[0039] In one embodiment of the present application, a guide portion 36 and a removal portion 37 are formed on the side of the adsorption box 31 facing the pole piece 60, the guide portion 36 is parallel to the surface of the pole piece 60, one side of the removal portion 37 is connected to the guide portion 36, and the side of the removal portion 37 away from the guide portion 36 is inclined toward the side away from the pole piece 60, so that the waste tape entering the removal portion 37 from the guide portion 36 is away from each other between the pole pieces 60.

[0040] Specifically, the guide portion 36 is located on the side of the adsorption box 31 facing the pole piece 60 and is parallel to the surface of the pole piece 60. The main function of the guide portion 36 is to guide the waste tape to the tape removal portion 37. Since the guide portion 36 is parallel to the surface of the pole piece 60, the waste tape will first be adsorbed by the guide portion 36 under the negative pressure adsorption and stably move in a direction parallel to the pole piece 60. This facilitates the adsorption of the waste tape.

[0041] The belt-off portion 37 is located on the other side of the guide portion 36 and is connected to the guide portion 36. The side of the belt-off portion 37 away from the guide portion 36 is inclined toward the side away from the pole piece 60. The purpose of the inclined design is to allow the waste tape entering the belt-off portion 37 from the guide portion 36 to have enough space between it and the pole piece 60 when passing through the belt-off portion 37, so as to ensure that the waste tape can gradually move away from the surface of the pole piece 60 during the transfer process from the guide portion 36 to the belt-off portion 37, so as to avoid interference or adhesion between the waste tape and the surface of the pole piece 60 during the conveying process.

[0042] By adopting the above technical solution, the design of the guide part 36 and the take-away part 37 on the side of the adsorption box 31 facing the pole piece 60 can ensure that the waste tape is effectively separated from the surface of the pole piece 60 when entering the take-away part 37 from the guide part 36 .

[0043] In one embodiment of the present application, the waste tape conveying module 30 also includes an auxiliary film feeding module 50, which is arranged opposite to the guide part 36 on the adsorption box 31 to form a guide space for the passage of the electrode 60. The surface of the auxiliary film feeding module 50 is provided with a rotating belt 51 which rotates in the opposite direction and at the same speed as the guide part 32, so as to smoothly deliver the cut electrode 60.

[0044] Specifically, the auxiliary sheet feeding module 50 is arranged at a relative position to the guide portion 36 of the adsorption box 31 to form a guide space for the electrode 60 to pass through. The relative arrangement of the auxiliary sheet feeding module 50 and the guide portion 36 of the adsorption box 31 ensures that the electrode 60 can be smoothly transported forward along a predetermined path when passing through the guide space. The function of the auxiliary sheet feeding module 50 is to ensure that the electrode 60 after cutting is not offset, twisted or stuck during the transportation process, so as to maintain its smooth transportation.

[0045] The surface of the auxiliary film feeding module 50 is equipped with a rotating belt 51. The design direction of the rotating belt 51 is opposite to the rotation direction of the guide member 32, but the rotation speed is the same, ensuring the stable transmission of the pole piece 60.

[0046] By adopting the above technical solution, the auxiliary film feeding module 50 effectively provides a stable conveying channel for the electrode 60 by reasonably cooperating with the guide part 36 of the adsorption box 31. The design that the rotating belt 51 of the auxiliary film feeding module 50 rotates in opposite directions and at the same speed as the guide 32 helps to smoothly deliver the electrode 60, avoids entanglement or obstruction between the waste belt and the electrode 60, and ensures that the cut electrode 60 can smoothly enter the subsequent processing flow.

[0047] In one embodiment of the present application, a waste tape dust collection duct assembly 70 is provided above the waste tape collection chamber, and the waste tape dust collection duct assembly 70 is used to suck the waste tape into the duct through negative pressure suction to transport it into the waste tape collection chamber.

[0048] Specifically, the waste tape dust collection duct assembly 70 is arranged above the waste tape collection cavity, and is mainly used to suck the waste tape from the waste tape conveying module 30 into the duct through negative pressure suction, and convey it to the waste tape collection cavity. The negative pressure suction of the waste tape dust collection duct assembly 70 is greater than the suction of the air duct assembly 38.

[0049] By adopting the above technical solution, the waste tape dust collection duct assembly 70 in this embodiment effectively sucks the waste tape into the duct through negative pressure suction and transports it to the waste tape collection cavity, thereby achieving rapid, stable and seamless transportation of the waste tape.

[0050] In one embodiment of the present application, the conveying assembly comprises: A feeding roller 11, located at the feeding end of the cutting station, is used to transport the electrode piece 60 to be cut to the cutting station; and The dust removal roller 12 is located at the discharge end of the cutting station and is used to output the cut pole pieces 60 to a designated position.

[0051] Specifically, the feed roller 11 is arranged at the feed end of the cutting station, and is used to convey the pole piece 60 to be cut to the cutting station. The function of the feed roller 11 is to ensure that the pole piece 60 to be processed can be stably and accurately transferred to the laser cutting station, ready for pole ear cutting. The surface of the feed roller 11 can be made of rubber, polyurethane and other materials to ensure that its surface has sufficient friction so that the pole piece 60 can be steadily conveyed without sliding or shifting during the conveying process. The feed roller 11 is driven by a motor, and the rotation speed and the tension of the conveyor belt are adjusted to ensure the accurate conveying of the pole piece 60, avoiding uneven cutting or damage to the pole piece 60 due to too fast or too slow conveying speed.

[0052] The dust removal roller 12 is located at the discharge end of the cutting station and is mainly used to output the cut electrode piece 60 to a designated location. The dust removal roller 12 is different from the traditional roller. Its surface is covered with a negative pressure channel, through which dust, waste and other impurities on the surface of the electrode piece 60 are cleaned.

[0053] By adopting the above technical solution, by arranging the feeding roller 11 and the dust bag roller 12 in the conveying assembly, the electrode piece 60 to be cut can be accurately conveyed and the electrode piece 60 can be cleanly output after cutting. The feeding roller 11 ensures that the electrode piece 60 enters the cutting station accurately and smoothly, avoiding cutting errors caused by unstable conveying. The dust bag roller 12 not only completes the conveying task of the electrode piece 60, but also can effectively clean the dust and impurities generated during the cutting process, keeping the surface of the electrode piece 60 clean.

[0054] In one embodiment of the present application, the dust removal bag roller 12 is provided with a plurality of evenly distributed negative pressure channels, and when the cut pole piece 60 contacts the dust removal bag roller 12, the dust on the pole piece 60 can be adsorbed.

[0055] Specifically, multiple negative pressure channels are evenly arranged on the surface of the dust removal roller 12, and the multiple negative pressure channels are connected to the negative pressure system, and are connected to the fan 34 or the vacuum pump through a pipeline to form a negative pressure area. When the cut pole piece 60 contacts the dust removal roller 12, the negative pressure channel sucks the dust, cutting debris and other tiny particles attached to the surface of the pole piece 60 into the channel through suction.

[0056] By adopting the above technical solution, by providing a plurality of evenly distributed negative pressure channels on the dust removal bag roller 12, dust and powder on the surface of the cut pole piece 60 can be effectively removed.

[0057] In one embodiment of the present application, a dust removal assembly 40 is also included, and the dust removal assembly 40 includes: A positive pressure air knife 41 is provided at one side of the cutting station and is used to generate airflow to separate the dust on the pole piece 60 from the pole piece 60; A negative pressure recovery pipe is arranged opposite to the positive pressure air knife 41 to generate negative pressure to absorb dust blown off by the positive pressure air knife 41; and The double-layer dust removal filter is arranged at the air inlet of the negative pressure recovery pipe and is used to absorb dust entering the negative pressure recovery pipe.

[0058] Specifically, the positive pressure air knife 41 is arranged at one side of the cutting station, and is mainly used to generate high pressure airflow to blow off the dust attached to the surface of the pole piece 60. The positive pressure air knife 41 provides compressed air through the air supply system, and the compressed air is discharged at high speed through the air knife mouth to form an airflow. When the airflow blows toward the cut pole piece 60, the dust particles on the surface of the pole piece 60 can be effectively separated from the surface of the pole piece 60.

[0059] The negative pressure recovery pipe is arranged opposite to the positive pressure air knife 41, and absorbs the dust blown off by the positive pressure air knife 41 through the negative pressure effect. The negative pressure recovery pipe generates suction by connecting to a negative pressure system (such as a fan 34 or a vacuum pump), forming a negative pressure area, which can efficiently suck the blown dust into the pipe.

[0060] The double-layer dust filter is installed at the air inlet of the negative pressure recovery duct to filter the dust entering the duct. The double-layer dust filter consists of two layers of filter materials with different densities. The first layer of filter is used to capture larger particles, and the second layer of filter is used to capture finer dust particles. The design of the double-layer filter can effectively prevent the secondary release of dust in the duct, ensure that the airflow in the duct remains clean, and avoid duct blockage or decreased efficiency of the negative pressure system caused by dust accumulation.

[0061] By adopting the above technical solution, by arranging the positive pressure air knife 41, the negative pressure recovery pipe and the double-layer dust removal filter in the dust removal component 40, the dust generated during the cutting process can be effectively removed. The high-pressure airflow generated by the positive pressure air knife 41 can quickly blow off the dust attached to the surface of the pole piece 60, and suck the blown dust into the pipe through the negative pressure recovery pipe to prevent the dust from spreading in the working area. The double-layer dust removal filter further improves the dust recovery efficiency, avoids pipe blockage, and ensures the efficient operation of the entire dust removal system.

[0062] In one embodiment of the present application, the dust removal assembly 40 further includes: The particle dust eliminator 42 is disposed at one side of the cutting station and can generate ultrasonic waves and / or micro-vibration fluctuations to separate the dust on the surface of the pole piece 60 from the pole piece 60 .

[0063] Specifically, the particle dust eliminator 42 mainly stimulates the surface of the pole piece 60 to generate tiny vibrations by emitting ultrasonic waves and / or microseismic fluctuations. These vibrations can effectively destroy the adsorption force between the dust and the surface of the pole piece 60, so that the dust particles attached to the surface of the pole piece 60 are separated from the surface of the pole piece 60. The frequency, amplitude and wavelength of the ultrasonic and microseismic fluctuations can be adjusted according to the particle size and adhesion strength of the dust to ensure that the dust can be efficiently separated from the surface of the pole piece 60.

[0064] By adopting the above technical solution, the particle dust eliminator 42 can effectively separate the dust attached to the surface of the pole piece 60 through ultrasonic and / or micro-seismic fluctuations, and can use physical vibration to remove the fine dust on the pole piece 60 without directly contacting the pole piece 60. It can not only ensure the cleanliness of the surface of the pole piece 60 and prevent dust from affecting the subsequent process, but also reduce the burden of other dust removal equipment and improve the efficiency of the entire dust removal system.

[0065] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laser cutting device for cutting pole pieces, characterized in that: include: The conveying assembly is used to convey the electrode pieces to be processed to the cutting station and output the cut electrode pieces; A laser cutting assembly, disposed at one side of the cutting station, for cutting the pole lugs of the pole pieces to be processed on the cutting station; and The waste tape conveying module is arranged on one side of the cutting station. After the electrode is cut, a waste tape is formed. The waste tape conveying module is used to adsorb the waste tape through the belt surface and drive the adsorbed waste tape to move toward the waste collection cavity to ensure the complete separation of the waste tape and the electrode.

2. The laser cutting device for pole piece cutting according to claim 1, characterized in that: The waste tape conveying module comprises: An adsorption box body with an adsorption cavity, wherein a plurality of air ducts connecting the inner and outer spaces of the adsorption cavity are arranged on one side of the adsorption box body facing the electrode piece, and the plurality of air ducts are arranged in parallel to form an air duct group; A fan connected to the adsorption box can extract the air in the adsorption cavity to generate negative pressure in the adsorption cavity; A guide member is sleeved on the adsorption box, the guide member covers the air duct group, and the waste tape is adsorbed on the guide member under the action of the negative pressure of the air duct group; and The driving member is used to drive the guide member to rotate so as to guide the waste tape adsorbed on the guide member to the waste collection chamber.

3. The laser cutting device for cutting pole pieces according to claim 2, characterized in that: The fan is provided with a flow regulator which can adjust the flow of the fan.

4. The laser cutting device for pole piece cutting according to claim 2, characterized in that: A guide portion and a take-away portion are formed on the side of the adsorption box facing the pole piece, the guide portion is parallel to the surface of the pole piece, one side of the take-away portion is connected to the guide portion, and the side of the take-away portion away from the guide portion is inclined toward the side away from the pole piece, so that the waste tape entering the take-away portion from the guide portion is away from each other between the pole pieces.

5. The laser cutting device for pole piece cutting according to claim 4, characterized in that: The waste tape conveying module also includes an auxiliary film feeding module, which is arranged opposite to the guide part on the adsorption box to form a guiding space for the electrode channel. The surface of the auxiliary film feeding module is provided with a rotating belt with a rotation direction opposite to that of the guide and the same rotation speed as that of the guide, which is used to smoothly deliver the cut electrode.

6. The laser cutting device for pole piece cutting according to claim 1, characterized in that: A waste tape dust collection pipeline assembly is arranged above the waste tape collection cavity, and the waste tape dust collection pipeline assembly is used to suck the waste tape into the pipeline through negative pressure suction to transport it into the waste tape collection cavity.

7. The laser cutting device for cutting pole pieces according to claim 1, characterized in that: The conveying assembly comprises: A feeding roller, located at the feeding end of the cutting station, used for conveying the electrode pieces to be cut to the cutting station; and The dust removal roller is located at the discharge end of the cutting station and is used to output the cut pole pieces to a designated position.

8. The laser cutting device for pole piece cutting according to claim 7, characterized in that: The dust removal roller is provided with a plurality of evenly distributed negative pressure channels, and when the cut pole piece contacts the dust removal roller, the dust on the pole piece can be adsorbed.

9. The laser cutting device for pole piece cutting according to claim 1, characterized in that: Also included is a dust removal assembly, the dust removal assembly comprising: A positive pressure air knife is provided at one side of the cutting station and is used to generate airflow to separate the dust on the electrode from the electrode; A negative pressure recovery pipe is arranged opposite to the positive pressure air knife to generate negative pressure to absorb dust blown off by the positive pressure air knife; and The double-layer dust removal filter is arranged at the air inlet of the negative pressure recovery pipe and is used to absorb dust entering the negative pressure recovery pipe.

10. The laser cutting device for cutting pole pieces according to claim 9, characterized in that: The dust removal assembly also includes: The particle dust eliminator is arranged at one side of the cutting station and can generate ultrasonic waves and / or micro-vibration fluctuations to separate the dust on the surface of the pole piece from the pole piece.

Images