Lithium battery pole piece slitting machine

Abstract

The utility model belongs to lithium battery pole piece production technical field especially relates to a kind of lithium battery pole piece slitting machine, it includes: two racks of symmetrical arrangement, conveying mechanism, tensioning mechanism and slitting mechanism being installed between two described rack, and with the adjusting mechanism being connected to the slitting mechanism, and the adjusting mechanism is installed on the rack;The slitting mechanism includes driving mechanism and two slitting rollers arranged in upper and lower, and the driving mechanism is connected with the slitting roller;The slitting roller in upper position is connected with the adjusting mechanism;Each slitting roller includes rotating stick and multiple circular knives, and multiple circular knives are arranged along the axial direction of rotating stick;The rotating stick is connected with the driving mechanism, and the rotating stick in upper position is connected with the adjusting mechanism.The utility model adjusts the height of upper slitting roller by setting adjusting mechanism, effectively prevent the wave edge defect caused by uneven tension.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery electrode production technology, and in particular relates to a lithium battery electrode slitting machine. Background Technology

[0002] The lithium battery manufacturing process is complex. Positive and negative electrode sheets and separators are rolled into small rolls and packed into the battery cell through processes such as slurry preparation, coating, rolling, slitting, and winding. After being packaged, the battery cell undergoes bottom shell welding, grooving, and testing. Finally, electrolyte is injected into the cell, and after weighing, it is sealed and welded. Slitting refers to cutting the rolled electrode sheets to the required width. When wavy edges appear on the slitting electrode sheets, it increases friction, affects flatness, and thus reduces battery performance. Therefore, a slitting machine with adjustable tension and replaceable round blades is proposed to avoid wavy edges on the electrode sheets. Utility Model Content

[0003] The purpose of this utility model is to provide a lithium battery electrode slitting machine to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A lithium battery electrode slitting machine includes: two symmetrically arranged frames, a conveying mechanism, a tensioning mechanism and a slitting mechanism installed between the two frames, and an adjusting mechanism connected to the slitting mechanism, wherein the adjusting mechanism is installed on the frames; The slitting mechanism includes a drive mechanism and two slitting rollers arranged vertically. The drive mechanism is connected to the slitting rollers and is used to drive the rotation of the slitting rollers. The upper slitting roller is connected to the adjustment mechanism, which is used to adjust the height of the slitting roller. Each of the slitting rollers includes a rotating roller and a plurality of circular blades detachably mounted on the rotating roller, and the plurality of circular blades are arranged along the axial direction of the rotating roller; the rotating roller is connected to the drive mechanism, and the upper rotating roller is connected to the adjustment mechanism.

[0005] As a further improvement of this utility model, the rotating roller includes a rotating part and a connecting part; the connecting part is cylindrical, the rotating part includes a fastening part adapted to the end of the connecting part and a rotating shaft coaxial with the fastening part, the fastening part is inserted into the end of the connecting part, and the rotating shaft is connected to the driving mechanism.

[0006] As a further improvement of this utility model, the connecting part is provided with a through groove extending along its axial direction; The circular cutter is provided with a countersunk hole and a threaded hole coaxial with the countersunk hole, and the threaded hole and the through groove are connected by bolts.

[0007] As a further improvement of this utility model, the adjusting mechanism includes a hydraulic cylinder, the fixed end of which is rotatably connected to the frame, and the free end of which is rotatably connected to the rotating roller. The frame is provided with a longitudinally extending slot, and the rotating roller passes through the slot and is rotatably connected to the free end of the oil cylinder.

[0008] As a further improvement of this utility model, the driving mechanism includes two driving motors, and the two driving motors are respectively coaxially connected to the two rotating rollers; A mounting plate is provided on the output shaft of the motor located above. The mounting plate is rotatably connected to the output shaft and is bolted to the frame.

[0009] As a further improvement of this utility model, the conveying mechanism includes two conveying rollers, the ends of which pass through the frame and are coaxially connected to the conveying motor.

[0010] As a further improvement of this utility model, the tensioning mechanism includes a tensioning roller, and both ends of the tensioning roller are provided with internal thread sections; The frame is provided with a longitudinally extending slot, and a stud is provided in the slot, which is threadedly connected to the internal thread section.

[0011] The beneficial effects of adopting the above technical solution are as follows: This invention adjusts the height of the upper slitting roller by setting an adjustment mechanism, so that the meshing depth between the upper and lower rows of circular blades can be continuously changed with the thickness of the electrode and the elastic rebound amount, thereby realizing dynamic control of the electrode tension, ensuring uniform electrode tension during the slitting process, and effectively preventing wavy edge defects caused by uneven tension.

[0012] The circular blades on the slitting rollers feature a detachable design, allowing for quick adaptation to the slitting needs of electrode sheets of different widths and materials by replacing them with circular blades of different sizes or blade edge conditions. This reduces equipment changeover time and improves production efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial exploded view of the cutting mechanism of this utility model; Figure 3 This is a schematic diagram of the tension roller of this utility model; The markings in the diagram are as follows: 1 Frame, 2 Slitting Roller, 2-1 Rotating Roller, 2-2 Circular Knife, 2-3 Rotating Part, 2-4 Connecting Part, 2-5 Fastening Part, 2-6 Rotating Shaft, 2-7 Through Slot, 2-8 Screw Hole, 3 Hydraulic Cylinder, 4 Groove, 5 Drive Motor, 6 Mounting Plate, 7 Conveyor Roller, 8 Conveyor Motor, 9 Tension Roller, 10 Internal Thread Section, 11 Grooving. Detailed Implementation

[0014] To better understand the purpose, structure, and function of this utility model, a clear and complete description of this utility model will be provided below in conjunction with the accompanying drawings.

[0015] like Figures 1-3 The lithium battery electrode slitting machine shown includes: two symmetrically arranged frames 1; a conveying mechanism, a tensioning mechanism, and a slitting mechanism arranged sequentially between the two frames 1; and an adjusting mechanism connected to the slitting mechanism, which is mounted on the frames 1. Electrodes are sequentially conveyed by the conveying mechanism, and the tensioning mechanism adjusts the tension before entering the slitting mechanism for slitting, ensuring constant tension during the slitting process and reducing the probability of wavy edges. Furthermore, the driving, slitting, tensioning, and conveying functional modules are integrated within the symmetrical double frames 1, resulting in a compact structure and reduced floor space.

[0016] In this embodiment, the conveying mechanism includes two conveying rollers 7. The ends of the two conveying rollers 7 pass through the frame 1 and are coaxially connected to the conveying motor 8 via a coupling. The two conveying rollers 7 are arranged vertically, with an electrode plate passing between them, and rotate in the direction of the tensioning mechanism to convey the electrode plate to the tensioning mechanism.

[0017] In this embodiment, the tensioning mechanism includes a tensioning roller 9, with internally threaded sections 10 at both ends. The frame 1 has a longitudinally extending slot 11, within which a stud passes. The stud is threadedly connected to the internally threaded section 10, and a locking nut is provided on the stud, with its end face contacting the end face of the frame 1. The tensioning roller 9 is located above the conveying roller 7, and the electrode sheet is conveyed from the upper part of the tensioning roller 9. Because the tensioning roller 9 has internally threaded sections 10 at both ends, its height can be adjusted and locked by the stud passing through the longitudinal slot 11 of the frame 1 and the nut cooperating with the stud, thus controlling the electrode sheet tension.

[0018] In this embodiment, the slitting mechanism includes a driving mechanism and two slitting rollers 2 arranged vertically. The driving mechanism is connected to the slitting rollers 2 and is used to drive the rotation of the slitting rollers 2. The upper slitting roller 2 is connected to the adjusting mechanism, which is used to adjust the height of the slitting roller 2. The electrode sheet passes through the middle of the two slitting rollers 2, and the two slitting rollers 2 rotate relative to each other to slit the electrode sheet.

[0019] Furthermore, the drive mechanism includes two drive motors 5, which are coaxially connected to the two slitting rollers 2 via couplings. A mounting plate 6 is provided on the output shaft of the upper motor, which is rotatably connected to the output shaft and bolted to the frame 1. The mounting plate 6 is used to mount the slitting roller 2 onto the frame 1 after height adjustment, further supporting and fixing the height of the slitting roller 2. The adjustment mechanism includes a hydraulic cylinder 3, whose fixed end is rotatably connected to the frame 1, specifically hinged to a support on the bracket, and whose free end is rotatably connected to the slitting roller 2. The frame 1 has a longitudinally extending slot 4, through which the slitting roller 2 passes and is rotatably connected to the free end of the hydraulic cylinder 3.

[0020] Each of the slitting rollers 2 includes a rotating roller 2-1 and a plurality of circular blades 2-2 detachably mounted on the rotating roller 2-1, and the plurality of circular blades 2-2 are arranged along the axial direction of the rotating roller 2-1; the rotating roller 2-1 is connected to the driving mechanism, that is, the rotating roller 2-1 is connected to the driving motor 5, and the upper rotating roller 2-1 is connected to the adjusting mechanism, that is, the free end of the oil cylinder 3 is rotatably connected to the rotating roller 2-1, and the rotating roller 2-1 passes through the slot 4.

[0021] Furthermore, the rotating roller 2-1 includes a rotating part 2-3 and a connecting part 2-4; the connecting part 2-4 is cylindrical, and the rotating part 2-3 includes a fastening part 2-5 adapted to the end of the connecting part 2-4 and a rotating shaft 2-6 coaxial with the fastening part 2-5. The fastening part 2-5 is inserted into the end of the connecting part 2-4, and the rotating shaft 2-6 is connected to the driving mechanism. The connecting part 2-4 is provided with a through groove 2-7 extending axially therefrom; the circular blade 2-2 is provided with a countersunk hole and a threaded hole 2-8 coaxial with the countersunk hole, and the threaded hole 2-8 and the through groove 2-7 are connected by bolts. The circular blade 2-2 adopts a detachable design, allowing for quick adaptation to the slitting needs of electrode sheets of different widths and materials by replacing circular blades 2-2 of different sizes or cutting edge states, reducing equipment changeover time and improving production efficiency.

[0022] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A lithium battery electrode slitting machine, characterized in that: It includes: Two symmetrically arranged frames (1), a conveying mechanism, a tensioning mechanism and a cutting mechanism are installed between the two frames (1), and an adjusting mechanism is connected to the cutting mechanism, and the adjusting mechanism is installed on the frames (1); The slitting mechanism includes a drive mechanism and two slitting rollers (2) arranged vertically. The drive mechanism is connected to the slitting rollers (2) and is used to drive the rotation of the slitting rollers (2). The upper slitting roller (2) is connected to the adjustment mechanism, which is used to adjust the height of the slitting roller (2); Each of the slitting rollers (2) includes a rotating roller (2-1) and a plurality of circular blades (2-2) detachably mounted on the rotating roller (2-1), and the plurality of circular blades (2-2) are arranged along the axial direction of the rotating roller (2-1); the rotating roller (2-1) is connected to the driving mechanism, and the upper rotating roller (2-1) is connected to the adjusting mechanism.

2. The lithium battery electrode slitting machine according to claim 1, characterized in that: The rotating roller (2-1) includes a rotating part (2-3) and a connecting part (2-4); the connecting part (2-4) is cylindrical, the rotating part (2-3) includes a fastening part (2-5) adapted to the end of the connecting part (2-4) and a rotating shaft (2-6) coaxial with the fastening part (2-5), the fastening part (2-5) is inserted into the end of the connecting part (2-4), and the rotating shaft (2-6) is connected to the driving mechanism.

3. A lithium battery electrode slitting machine according to claim 2, characterized in that: The connecting part (2-4) is provided with a through groove (2-7) extending along its axial direction. The circular cutter (2-2) is provided with a countersunk hole and a threaded hole (2-8) coaxial with the countersunk hole. The threaded hole (2-8) and the through groove (2-7) are connected by bolts.

4. A lithium battery electrode slitting machine according to claim 1, characterized in that: The adjustment mechanism includes a hydraulic cylinder (3), the fixed end of which is rotatably connected to the frame (1), and the free end is rotatably connected to the rotating roller (2-1); The frame (1) is provided with a longitudinally extending slot (4), and the rotating roller (2-1) passes through the slot (4) and is rotatably connected to the free end of the oil cylinder (3).

5. A lithium battery electrode slitting machine according to claim 1, characterized in that: The driving mechanism includes two drive motors (5), which are coaxially connected to the two rotating rollers (2-1) respectively; A mounting plate (6) is provided on the output shaft of the motor located above. The mounting plate (6) is rotatably connected to the output shaft and is bolted to the frame (1).

6. A lithium battery electrode slitting machine according to claim 1, characterized in that: The conveying mechanism includes two conveying rollers (7), the ends of which pass through the frame (1) and are coaxially connected to the conveying motor (8).

7. A lithium battery electrode slitting machine according to claim 1, characterized in that: The tensioning mechanism includes a tensioning roller (9), and both ends of the tensioning roller (9) are provided with internal thread sections (10). The frame (1) is provided with a longitudinally extending slot (11), and a stud is provided in the slot (11) through which the stud is threadedly connected to the internal thread section (10).

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