A positive electrode sheet cutting device

Abstract

The utility model discloses a kind of positive pole piece cutting device, including machine table, roller group mechanism, transmission mechanism, cutting mechanism and discharge mechanism are sequentially arranged on the machine table.The utility model positive pole piece material roll is sequentially pre-tightened by roller group mechanism, transmission is carried out, then cutting mechanism is cut, finally, discharge mechanism is discharged again.The cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is cut, and the cutting mechanism is

Description

Technical Field

[0001] This utility model relates to the field of battery electrode processing technology, and in particular to a positive electrode cutting device. Background Technology

[0002] Nickel foam is a common positive electrode material in the battery industry. It is processed by laterally cutting a predetermined length from a roll of positive electrode material to create sheet-like positive electrode sheets. Nickel foam has a three-dimensional network porous structure with a large specific surface area, which increases the loading of active materials and improves battery capacity. However, this three-dimensional network porous structure also makes it difficult to cut. The main challenge is that the positive electrode roll must be compressed and fixed during cutting; otherwise, the cut is not easily maintained. Excessive compression force can lead to cracks, fractures, or structural collapse of the positive electrode material. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positive electrode cutting device.

[0004] To achieve the above objectives, a positive electrode sheet cutting device includes a machine base. A roller assembly, a transmission mechanism, a cutting mechanism, and a discharge mechanism are sequentially arranged on the machine base. The cutting mechanism includes a cutting support and a cutting seat that is vertically mounted on the cutting support. The cutting seat is connected to a cutting cylinder that drives its vertical movement. The cutting seat is equipped with an upper cutting blade, and a reference seat is located below the cutting seat. The reference seat is equipped with a lower cutting blade that corresponds to the upper cutting blade and forms a shearing action. A vertically mounted pressure block is located at the front end of the upper cutting blade on the cutting support. The pressure block is movably connected to the cutting seat via at least one vertically upward guide rod. A buffer spring is sleeved on the guide rod between the pressure block and the cutting seat.

[0005] The positive electrode sheet roll is pre-tightened by a roller assembly, transported by a transmission mechanism, cut by a cutting mechanism, and finally discharged by a discharge mechanism. The cutting mechanism uses upper and lower cutting blades to shear the positive electrode sheet roll. Before cutting, a pressure block that moves with the cutting seat makes initial contact with the positive electrode sheet roll. A buffer spring provides stable pre-pressure and positioning, ensuring a smooth and precise cut, and preventing cracks, breaks, or structural collapse of the positive electrode material.

[0006] Preferably, the cutting mechanism has a pair of symmetrical sliding rods vertically arranged and fixedly connected to the machine base. A slider is provided on the sliding rod, and a return spring is sleeved on the sliding rod below the slider. The slider is fixedly connected to the cutting seat.

[0007] The purpose of setting a return spring is mainly to provide some buffer for the upper cutter during cutting, and also to facilitate the reset of the cutting seat after cutting.

[0008] Preferably, the roller assembly includes a plurality of pre-tensioning rollers rotatably arranged on the machine base.

[0009] The roller assembly mechanism is used to tension the positive electrode sheet roll. The positive electrode sheet roll is placed on the pre-tensioning roller for conveying. The pre-tensioning roller can pre-tighten the positive electrode sheet roll to a certain extent without over-tensioning and causing deformation of the positive electrode sheet roll.

[0010] Preferably, the transmission mechanism includes a transmission frame, on which are arranged driven rollers and driving rollers that are rotatable and correspond to each other. The driving roller is connected to a drive motor that drives it to operate, and the driven roller is connected to a lifting cylinder that drives it to move up and down.

[0011] The transmission mechanism uses a lifting cylinder to drive the driven roller to press the positive electrode sheet roll onto the driving roller, and uses a drive motor to drive the positive electrode sheet roll to be conveyed stably.

[0012] Preferably, the transmission frame is provided with a liftable transmission seat, the lifting cylinder drives the transmission seat to rise and fall, and the driven roller is provided on the transmission seat.

[0013] Preferably, the discharge mechanism includes a conveyor belt and a servo motor that drives the conveyor belt to operate. Limiting plates are respectively provided on both sides of the conveyor belt, a powder cleaning component is provided below the conveyor belt, and a collection component is provided at the end of the conveyor belt's travel.

[0014] The discharge mechanism is equipped with a conveyor belt to transport the positive electrode sheets. To prevent the positive electrode sheets from falling off the conveyor belt, a limit plate is installed. Considering that the debris after the positive electrode sheets are cut will remain on the conveyor belt, a powder cleaning component is installed to remove the debris. At the same time, considering that some positive electrode sheets may not be collected in time, a collection component is installed to buffer the positive electrode sheets that cannot be collected in time.

[0015] Preferably, the powder cleaning component includes a material box disposed below the conveyor belt, the lower part of the material box is provided with a removable drawer, and a cleaning brush that contacts the conveyor belt is disposed inside the material box.

[0016] Preferably, the collection component includes a collection box disposed at the end of the conveyor belt travel.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This utility model relates to a positive electrode sheet roll that is pre-tightened by a roller assembly, transported by a transmission mechanism, cut by a cutting mechanism, and finally discharged by an unloading mechanism. The cutting mechanism uses upper and lower corresponding cutters to cut the positive electrode sheet roll through shearing action. Before cutting, a pressure block that moves with the cutting seat preferentially contacts the positive electrode sheet roll, and a buffer spring provides stable pre-pressure and positioning, ensuring a smooth and precise cut and preventing cracks, breaks, or structural collapse of the positive electrode sheet material. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial structural schematic diagram of the present invention.

[0021] Figure 3 This is a partial structural schematic diagram of the present invention.

[0022] Figure 4 This is a schematic diagram of the cutting mechanism of this utility model.

[0023] Figure 5 This is an exploded view of the cutting mechanism of this utility model.

[0024] Figure 6 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] This utility model provides a positive electrode sheet cutting device, such as... Figures 1-6As shown, the system includes a machine base 100, on which a roller assembly 1, a transmission mechanism 2, a cutting mechanism 3, and a discharge mechanism 4 are sequentially arranged. The roller assembly 1 includes multiple pre-tensioning rollers 11 rotatably arranged on the machine base 100. The positive electrode sheet roll is placed on the pre-tensioning rollers 11 for pre-tensioning and transmission. It should be noted that regardless of the number of pre-tensioning rollers 11, the positive electrode sheet roll must be conveyed from above the pre-tensioning rollers 11, and an S-shaped winding tensioning method cannot be used. This is to avoid the positive electrode sheet roll becoming too tight and deformed.

[0027] The transmission mechanism 2 includes a transmission frame 21, on which are mounted a driven roller 22 and a driving roller 23, which are rotatable and corresponding vertically. The driving roller 23 is connected to a drive motor 24 that drives its operation. The connection between the driving roller 23 and the drive motor 24 can be implemented using any existing technology. The driven roller 22 is connected to a lifting cylinder 25 that drives its lifting and lowering. The transmission frame 21 is equipped with a liftable transmission seat 26, and the lifting cylinder 25 drives the transmission seat 26 to rise and fall. The driven roller 22 is mounted on the transmission seat 26. The lifting cylinder 25 drives the driven roller 22 to press down, pressing the positive electrode sheet roll onto the driving roller 23 at a set height. The drive motor 24 drives the driving roller 23 to rotate, thus conveying the positive electrode sheet roll. A color difference sensor 27 is installed at the end of the conveying stroke of the transmission mechanism 2 to detect whether material has passed through. A baffle plate 28 of a predetermined height is also installed at the end of the conveying stroke to prevent the positive electrode sheet roll from failing to enter the cutting mechanism and causing confusion, while also providing a certain guiding function.

[0028] The cutting mechanism 3 includes a cutting bracket 31 and a cutting seat 32 that can be lifted and lowered on the cutting bracket 31. The cutting seat 32 is connected to a cutting cylinder 33 that drives it to rise and fall. The cutting seat 32 is provided with an upper cutting blade 321. A reference seat 34 is provided below the cutting seat 32. The reference seat 34 is provided with a lower cutting blade 341 that corresponds to the upper cutting blade 321 and forms a cutting action. The cutting bracket 31 is provided with a lifting and lowering pressure block 35 at the front end of the upper cutting blade 321. The pressure block 35 is movably connected to the cutting seat 32 through at least one vertically upward guide rod 36. A buffer spring 361 is sleeved on the guide rod 36 between the pressure block 35 and the cutting seat 32. The cutting cylinder 33 drives the cutting seat 32 to press down. The pressure block 35 is positioned lower than the upper cutter 321. The pressure block 35 first contacts the positive electrode sheet roll. Due to the presence of the buffer spring 361, the pressure block 35 is provided with a certain anti-vibration space, ensuring that the pressure block 35 can stably press the positive electrode sheet roll without excessive pressure that could damage it. Subsequently, the upper cutter 321 and the lower cutter 341 cooperate to shear the positive electrode sheet roll. The cutting mechanism 3 is vertically equipped with a pair of symmetrical sliding rods 37, which are fixedly connected to the machine base 100. A slider 38 is provided on the sliding rod 37, and a return spring 371 is sleeved on the sliding rod 37 below the slider 38. The slider 38 is fixedly connected to the cutting seat 32. Considering that the foamed nickel positive electrode sheet roll has a three-dimensional mesh porous structure, the return spring 371 is set to buffer the upper cutter 321, avoiding damage to the structure around the material cut. The return spring 371 facilitates the reset of the cutting seat 32. A horizontally arranged feed plate 39 is provided on the reference base 34, and the height of the feed plate 39 corresponds to the top of the baffle plate 28.

[0029] The discharge mechanism 4 includes a conveyor belt 41 and a servo motor 42 that drives the conveyor belt 41. Limiting plates 43 are respectively provided on both sides of the conveyor belt 41 to limit the adaptation and conveying space of the positive electrode sheet. A powder cleaning component 44 is provided below the conveyor belt 41, and a collection component 45 is provided at the end of the travel of the conveyor belt 41. The discharge mechanism 4 is also provided with an incoming material sensor (not shown in the figure) at the front end of the travel of the conveyor belt 41 to determine whether the conveyor belt is receiving the material normally.

[0030] The powder cleaning component 44 includes a material box 441 disposed below the conveyor belt 41. A removable drawer 442 is provided at the bottom of the material box 441. A cleaning brush (not shown in the figure) is disposed inside the material box 441 and contacts the conveyor belt 41. Considering that powdery debris may remain on the conveyor belt 41 after the positive electrode sheet is cut, a cleaning brush is provided. During the operation of the conveyor belt 41, the cleaning brush scrapes the debris into the drawer 442, cleaning the conveyor belt 41. The collection component 45 includes a collection box disposed at the end of the conveyor belt's travel. The collection component 45 also includes a discharge sensor 46. When the positive electrode sheet is conveyed to the end of its travel, the discharge sensor 46 is triggered, alerting the next process equipment to receive the positive electrode sheet. The purpose of the collection box is to provide a buffer space, allowing the positive electrode sheet to fall into the collection box for temporary storage if it is not received in time.

[0031] Working principle: The positive electrode sheet roll is placed on the pre-tightening roller 11 and pre-tightened during conveying. When passing the transmission mechanism 2, the lifting cylinder 25 drives the driven roller 22 to press down, pressing the positive electrode sheet roll onto the driving roller 23. The drive motor 24 drives the driving roller 23 to convey the material to the cutting mechanism 3. The cutting cylinder 33 drives the cutting seat 32 to move down, and the pressing block 35 presses the positive electrode sheet roll. Then, the upper cutter 321 and the lower cutter 341 work together to cut out the positive electrode sheet. It should be noted that the upper cutter 321 is set at the beginning of the travel of the conveyor belt 41, and the positive electrode sheet automatically falls onto the conveyor belt 41. The discharge mechanism 4 is equipped with limit plates 43 on both sides of the conveyor belt to ensure the stability of the positive electrode sheet conveying position. The discharge sensor 46 is set at the end of the travel of the conveyor belt 41 to detect the incoming material and remind the next process to pick up the material. A collection box is also set to provide buffer space for positive electrode sheets that cannot be picked up in time.

[0032] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A positive electrode sheet cutting device, characterized in that, The machine includes a machine base, on which a roller assembly, a transmission mechanism, a cutting mechanism, and a discharge mechanism are sequentially arranged. The cutting mechanism includes a cutting bracket and a cutting seat that can be raised and lowered on the cutting bracket. The cutting seat is connected to a cutting cylinder that drives its raising and lowering. The cutting seat is equipped with an upper cutting blade. A reference seat is provided below the cutting seat. The reference seat is equipped with a lower cutting blade that corresponds to the upper cutting blade and forms a shearing action. The cutting bracket is equipped with a raised and lowerable pressure block at the front end of the upper cutting blade. The pressure block is movably connected to the cutting seat through at least one vertically upward guide rod. A buffer spring is sleeved on the guide rod between the pressure block and the cutting seat.

2. The positive electrode sheet cutting device according to claim 1, characterized in that, The cutting mechanism is vertically provided with a pair of symmetrical sliding rods that are fixedly connected to the machine base. A slider is provided on the sliding rod, and a return spring is sleeved on the sliding rod below the slider. The slider is fixedly connected to the cutting seat.

3. The positive electrode sheet cutting device according to claim 1, characterized in that, The roller assembly includes multiple pre-tensioning rollers that are rotatably arranged on the machine base.

4. The positive electrode sheet cutting device according to claim 1, characterized in that, The transmission mechanism includes a transmission frame, on which are mounted driven rollers and driving rollers that are rotatable and correspond to each other. The driving roller is connected to a drive motor that drives its operation, and the driven roller is connected to a lifting cylinder that drives its lifting and lowering.

5. The positive electrode sheet cutting device according to claim 4, characterized in that, The transmission frame is equipped with a liftable transmission seat, the lifting cylinder drives the transmission seat to rise and fall, and the driven roller is mounted on the transmission seat.

6. The positive electrode sheet cutting device according to claim 1, characterized in that, The discharge mechanism includes a conveyor belt and a servo motor that drives the conveyor belt. Limiting plates are provided on both sides of the conveyor belt, a powder cleaning component is provided below the conveyor belt, and a collection component is provided at the end of the conveyor belt's travel.

7. The positive electrode sheet cutting device according to claim 6, characterized in that, The powder cleaning component includes a material box located below the conveyor belt, a removable drawer at the bottom of the material box, and a cleaning brush that contacts the conveyor belt inside the material box.

8. The positive electrode sheet cutting device according to claim 6, characterized in that, The collection component includes a collection box located at the end of the conveyor belt travel.

Images