Cutter device
By designing the cutting wheel and pressure roller of the cutting device, and using them in conjunction with the scraper device, the problem of incomplete removal of waste material at the edge of thick lithium foil material was solved, achieving effective cutting and flattening of lithium foil material, and improving the adaptability and cutting quality of the equipment.
Patent Information
- Application Number
- CN202423016402.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-06
AI Technical Summary
In the prior art, the scraper device has difficulty in effectively removing waste material from the edges when the thickness of the lithium foil material increases after calendering (above 5.5μm), resulting in the problem that the edges are prone to wrinkling and cannot be scraped clean.
Design a cutting device, including a cutting wheel and a pressure roller, which is used in conjunction with a scraper device through a position adjustment mechanism to remove the thickness of the edge portion of lithium foil material and flatten the burrs, avoiding the scraper from scratching the roller surface.
It effectively solves the problem of removing waste from the edges of thick lithium foil materials, ensures that the scraper device can work normally, avoids wrinkles and incomplete scraping at the edges, and improves the versatility and cutting efficiency of the equipment.
Smart Images
Figure CN223558524U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lithium battery production technical field, specifically relate to a cutting device. BACKGROUND
[0002] At present, the lithium battery industry at home and abroad has good development prospect, and lithium ion battery has been widely used in portable electric appliances such as notebook computer, video camera and mobile communication due to its unique performance advantage. At present, the large capacity lithium ion battery developed has begun to be used in electric vehicles, and is expected to become one of the main power sources of electric vehicles in the 21st century, and will be applied in artificial satellites, aerospace and energy storage. With the shortage of energy and the pressure of world environmental protection, lithium battery is widely used in electric vehicle industry, especially the emergence of lithium iron phosphate material battery, which promotes the development and application of lithium battery industry.
[0003] In the battery production process, the lithium supplement process of lithium ion battery pole piece is the key technology to improve the capacity of lithium ion battery. The key of the lithium supplement process lies in calendering and film coating. In the calendering and film coating process, the lithium foil material is often removed by the scraper device after being extruded by the calendering device to remove the irregular waste materials on both sides to obtain the required width of lithium foil material, and then the required width of lithium foil material is attached to the pole piece by the film coating device to form the lithium supplement pole piece.
[0004] However, the method of directly removing the irregular waste materials on both sides of the lithium foil material after calendering by the scraper device is only suitable for the case that the lithium foil material after calendering is very thin (≤5 μm). When the lithium foil material after calendering is very thin (≤5 μm), the lithium foil material is soft and easy to break, and the scraper is always attached to the surface of the roller without damaging the surface of the roller. In the process of roller rotation, the edge of the lithium foil material is scraped in the opposite direction, so that the irregular waste materials on both sides are easily scraped off. When the thickness of the lithium foil material after calendering increases (more than 5.5 μm), the edge of the lithium foil material is prone to wrinkle after the action of the scraper, and the scraping is not clean, so that the next process cannot be carried out. TECHNICAL SOLUTION
[0005] In order to overcome the problem that the method of directly removing the waste materials on both sides of the lithium foil material after calendering by the scraper device in the prior art is not suitable for the lithium foil material with thick thickness (more than 5.5 μm), the utility model provides a cutting device.
[0006] The technical scheme of the utility model is as follows:
[0007] A cutting device is used in cooperation with a scraping device, and is installed on a transfer roller after calendering, the cutting device comprising a cutting wheel for cutting off a thickness of an edge portion of a lithium foil material, a pressing wheel for flattening the cut edge of the lithium foil material, and a position adjusting mechanism for driving the cutting wheel and the pressing wheel away from or close to a surface of the transfer roller, an active end of the position adjusting mechanism being fixed with the cutting wheel and the pressing wheel, and the pressing wheel being located behind the cutting wheel.
[0008] According to the cutting device of the above scheme, the cutting wheel is located in a front middle portion of the pressing wheel.
[0009] According to the cutting device of the above scheme, the cutting wheel and the pressing wheel are arranged with the same center.
[0010] According to the cutting device of the above scheme, the position adjusting mechanism comprises a cutting fixing base, a cylinder, a limiting block, a rotating shaft, a rotating plate, and a rubber-coated follower roller, the cylinder being fixed on the cutting fixing base, the limiting block being fixed on a jacking end of the cylinder, one end of the rotating plate being rotationally connected with the cutting fixing base through the rotating shaft, the cutting wheel and the pressing wheel being fixed on the other end of the rotating plate, a limiting cavity being arranged in the limiting block, a fixed end of the rubber-coated follower roller being fixed with the rotating plate, a rotating end of the rubber-coated follower roller extending into the limiting cavity and being movable in the limiting cavity, one side of the limiting cavity close to the rotating shaft being a limiting portion, and the other side being a movable portion.
[0011] When the cylinder jacks out the limiting block, the limiting block drives the rotating plate to rotate along the rotating shaft through the rubber-coated follower roller, the rubber-coated follower roller moves from the movable portion to the limiting portion, and is locked in the limiting portion.
[0012] Further, the limiting cavity is formed by an arc surface and two mutually perpendicular planes.
[0013] Further, the cutting wheel is fixed on the rotating plate through a first fixing base, and the first fixing base is fixed on the rotating plate through a first guide adjusting block.
[0014] Further, one end of the first fixed seat close to the first guide adjusting block is provided with a first connecting part, one end of the first guide adjusting block close to the first fixed seat is provided with a first connecting sliding groove, the first connecting part is inserted into the first connecting sliding groove and can slide along the first connecting sliding groove, one end of the first guide adjusting block away from the rotating plate is provided with a plurality of first locking holes in communication with the first connecting sliding groove, and the first locking holes lock the first connecting part in the first connecting sliding groove in cooperation with first screws.
[0015] Further, the pressing wheel is fixed on the rotating plate through a second fixed seat, and the second fixed seat is fixed on the rotating plate through a second guide adjusting block.
[0016] Further, one end of the second fixed seat close to the second guide adjusting block is provided with a second connecting part, one end of the second guide adjusting block close to the second fixed seat is provided with a second connecting sliding groove, the second connecting part is inserted into the second connecting sliding groove and can slide along the second connecting sliding groove, one end of the second guide adjusting block away from the rotating plate is provided with a plurality of third locking holes in communication with the second connecting sliding groove, and the third locking holes lock the second connecting part in the second connecting sliding groove in cooperation with third screws; and one end of the second guide adjusting block away from the second fixed seat is provided with a plurality of fourth locking holes in communication with the second connecting sliding groove, and the fourth locking holes limit the insertion depth of the second connecting part in cooperation with fourth screws.
[0017] According to the cutter device, the front side of the cutter wheel is provided with an oil sticking box, the oil sticking box is provided with a sponge, the sponge stores lubricating oil, and the sponge is in contact with the cutter wheel.
[0018] Compared with the prior art, the cutter device has the advantages that:
[0019] 1. The cutter device can be used together with the scraper device, is usually applicable to roller equipment, can cut part of the thickness of the edge of the lithium foil material through the cutter wheel, so that the scraper device can scrape the remaining thickness part of the edge of the lithium foil material, and can flatten the burr generated on the cut edge of the lithium foil material through the pressing wheel, so that the problem that the edge of the lithium foil material with increased thickness (more than 5.5 μm) is prone to wrinkled and cannot be scraped clean is solved effectively.
[0020] 2. By setting the position adjusting mechanism, the cutter wheel and the pressing wheel can be away from the roller surface of the transfer roller when adjusting the position each time, so as to avoid the cutter wheel scratching the roller surface of the transfer roller; meanwhile, the position adjusting mechanism is compact in structure and ingenious in cooperation, and after the action of the cylinder, the cutter wheel and the pressing wheel can reach the tangent position with the roller surface of the transfer roller, so as to be fixed, ensure that the cutter wheel and the pressing wheel have no displacement phenomenon in the cutting and pressing process, and make the entire cylinder jacking period have no gap. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0022] Figure 1 It is a structural schematic view of the cutter device installed on the transfer roller after calendering in an embodiment of the present application.
[0023] Figure 2 It is a structural schematic view of the cutter device in an embodiment of the present application.
[0024] Figure 3 It is a structural schematic view of the cutter device in an embodiment of the present application.
[0025] Figure 4 It is an explosion view between the first fixed seat and the first guide adjusting block in an embodiment of the present application.
[0026] Figure 5 It is another view of the explosion view between the first fixed seat and the first guide adjusting block in an embodiment of the present application.
[0027] Figure 6 It is an explosion view between the second fixed seat and the second guide adjusting block in an embodiment of the present application.
[0028] Figure 7 It is another view of the explosion view between the second fixed seat and the second guide adjusting block in an embodiment of the present application.
[0029] In the drawings,
[0030] 1. cutter wheel; 2. press wheel; 3. position adjusting mechanism; 301. cutter fixing seat; 302. air cylinder; 303. limiting block; 3031. limiting cavity; 30311. limiting part; 30312. movable part; 304. rotating shaft; 305. rotating plate; 306. rubber-coated follower roller; 307. first fixing seat; 3071. first connecting part; 308. first guide adjusting block; 3081. first connecting sliding groove; 3082. first locking hole; 3083. second locking hole; 309. second fixing seat; 3091. second connecting part; 310. second guide adjusting block; 3101. second connecting sliding groove; 3102. third locking hole; 3103. fourth locking hole; 4. oil sticking box; 5. transfer roller. DETAILED DESCRIPTION
[0031] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be described in further detail below in combination with the drawings and examples. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is declared at the same time that the examples described below are only used to explain the utility model and do not limit the utility model.
[0032] It should be noted that the terms "mounting", "setting", "connecting", "fixing" and the like should be understood broadly, for example, they can be fixed connection, or detachable connection, or integrated; they can be mechanical connection, or electrical connection; they can be directly connected, or indirectly connected through an intermediate medium; they can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship commonly used when the product of the application is used, which is only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, structure and operation, so it cannot be understood as a limitation on the application. The terms "first", "second", "third", "fourth" are only used for the purpose of convenience, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features.
[0033] Please refer to Figure 1 , Figure 2The cutting knife device is used in cooperation with the scraper device and is installed on the transfer roller 5 after calendering.
[0034] Working principle:
[0035] When the transfer roller 5 rotates, the lithium foil material after calendering is conveyed on the surface of the transfer roller 5, the position adjusting mechanism 3 drives the knife wheel 1 and the pressing wheel 2 to approach the roller surface of the transfer roller 5, the lithium foil material passes through the knife wheel 1 first with the rotation of the transfer roller 5, the knife wheel 1 cuts off the edge part thickness of the lithium foil material (for example, the overall thickness of the lithium foil material is 10 microns, and the knife wheel 1 cuts off 9 microns of the upper edge of the lithium foil material), then the pressing wheel 2 flattens the burr generated by the cut edge of the lithium foil material, and then the scraper device scrapes the remaining thickness part of the edge of the lithium foil material (the scraper device scrapes 1 micron of the lower edge of the lithium foil material), and the whole waste edge of the lithium foil material is scraped off.
[0036] When the position of the cutting knife device is adjusted each time, the position adjusting mechanism 3 drives the knife wheel 1 and the pressing wheel 2 to move away from the roller surface of the transfer roller 5, and then the position is adjusted to avoid scratching the roller surface of the transfer roller 5 by the knife wheel 1.
[0037] The cutting knife device can be used in cooperation with the scraper device, is usually applicable to the roller equipment, the thickness part of the edge of the lithium foil material can be cut off by the knife wheel 1, so that the remaining thickness part of the edge of the lithium foil material can be scraped off by the subsequent scraper device, the burr generated by the cut edge of the lithium foil material can be flattened by the pressing wheel 2, and the problem that the edge of the lithium foil material is prone to wrinkling and cannot be scraped clean when the edge of the lithium foil material with increased thickness (more than 5.5 microns) is removed can be effectively solved.
[0038] In one embodiment, the knife wheel 1 is located in the front middle part of the pressing wheel 2, so that the pressing wheel 2 can flatten the burr generated by the cut edge of the lithium foil material.
[0039] In one embodiment, the knife wheel 1 and the pressing wheel 2 of the cutting knife mechanism are arranged at the same center, so that the pressure and the cutting effect applied to the lithium foil material by the knife wheel 1 and the pressing wheel 2 are more uniform when the lithium foil material is processed, and the material deformation or damage phenomenon caused by uneven pressure is avoided.
[0040] Please refer to Figure 2 , Figure 3In one embodiment, the position adjusting mechanism 3 comprises a cutter fixing seat 301, a cylinder 302, a limiting block 303, a rotating shaft 304, a rotating plate 305, and a rubber-coated follower roller 306. The cylinder 302 is fixed on the cutter fixing seat 301, the limiting block 303 is fixed on the lifting end of the cylinder 302, one end of the rotating plate 305 is rotationally connected to the cutter fixing seat 301 through the rotating shaft 304, the cutter wheel 1 and the pressure wheel 2 are fixed on the other end of the rotating plate 305, a limiting cavity 3031 is arranged in the limiting block 303, the fixed end of the rubber-coated follower roller 306 is fixed to the rotating plate 305, the rotating end of the rubber-coated follower roller 306 extends into the limiting cavity 3031 and can move in the limiting cavity 3031. The limiting cavity 3031 is formed by an arc surface and two mutually perpendicular planes, and the side of the limiting cavity 3031 close to the rotating shaft 304 is a limiting portion 30311, and the other side is a movable portion 30312. When the cylinder 302 lifts out of the limiting block 303, the limiting block 303 drives the rotating plate 305 to rotate downward along the rotating shaft 304 through the rubber-coated follower roller 306, the rotating plate 305 in turn drives the cutter wheel 1 and the pressure wheel 2 to approach the roller surface of the transfer roller 5, and with the movement of the limiting block 303, the rubber-coated follower roller 306 moves from the movable portion 30312 to the limiting portion 30311 of the limiting cavity 3031 and is locked in the limiting portion 30311, at this time, the cutter wheel 1 and the pressure wheel 2 reach the tangent position with the roller surface of the transfer roller 5. Since the rubber-coated follower roller 306 is locked in the limiting portion 30311 at this time, its position is limited by an arc surface and a plane. When the cylinder 302 retracts into the limiting block 303, the limiting block 303 drives the rotating plate 305 to rotate upward along the rotating shaft 304 through the rubber-coated follower roller 306, the rotating plate 305 in turn drives the cutter wheel 1 and the pressure wheel 2 to move away from the roller surface of the transfer roller 5, and with the movement of the limiting block 303, the rubber-coated follower roller 306 moves from the limiting portion 30311 to the movable portion 30312 of the limiting cavity 3031.
[0041] The position adjusting mechanism 3 arranged as above has a compact structure, a clever cooperation, and after the action of the cylinder 302, the cutter wheel 1 and the pressure wheel 2 can reach the tangent position with the roller surface of the transfer roller 5, so as to be fixed, ensuring that there is no displacement of the cutter wheel 1 and the pressure wheel 2 during the cutting and pressing processes, and there is no gap during the lifting of the entire cylinder 302.
[0042] Please refer to Figure 2 、 Figure 4 、 Figure 5 In one embodiment, the cutter wheel 1 is fixed on the rotating plate 305 through a first fixing seat 307, the first fixing seat 307 is fixed on the rotating plate 305 through a first guide adjusting block 308, and the distance between the cutter wheel 1 and the roller surface of the transfer roller 5 can be adjusted through the first guide adjusting block 308, so as to control the cutting thickness according to the actual needs on site and improve the versatility of the equipment.
[0043] Specifically, one end of the first fixed seat 307 close to the first guide adjusting block 308 is provided with a first connecting part 3071, the first guide adjusting block 308 close to the first fixed seat 307 is provided with a first connecting sliding groove 3081, the first connecting part 3071 is inserted into the first connecting sliding groove 3081 and can slide along the first connecting sliding groove 3081, the end of the first guide adjusting block 308 away from the rotating plate 305 is provided with a plurality of first locking holes 3082 in communication with the first connecting sliding groove 3081, the first locking holes 3082 cooperate with the first screw to lock the first connecting part 3071 in the first connecting sliding groove 3081; the end of the first guide adjusting block 308 away from the first fixed seat 307 is provided with a plurality of second locking holes 3083 in communication with the first connecting sliding groove 3081, the second locking holes 3083 cooperate with the second screw to limit the insertion depth of the first connecting part 3071. By adjusting the position of the first fixed seat 307 on the first guide adjusting block 308, the distance between the cutter wheel 1 and the roll surface of the transfer roller 5 can be accurately controlled, so that the device can adapt to lithium foil materials of different thicknesses, the thickness of the cut material can be controlled according to the actual needs on site, thereby improving the versatility and adaptability of the equipment.
[0044] Please refer to Figure 2 、 Figure 6 、 Figure 7 In one embodiment, the press wheel 2 is fixed on the rotating plate 305 through the second fixed seat 309, the second fixed seat 309 is fixed on the rotating plate 305 through the second guide adjusting block 310, and the distance between the press wheel 2 and the roll surface of the transfer roller 5 can be adjusted through the second guide adjusting block 310, so as to control the material pressing height according to the actual needs on site and improve the versatility of the equipment.
[0045] Specifically, one end of the second fixed seat 309 close to the second guide adjusting block 310 is provided with a second connecting part 3091, one end of the second guide adjusting block 310 close to the second fixed seat 309 is provided with a second connecting sliding groove 3101, the second connecting part 3091 is inserted into the second connecting sliding groove 3101 and can slide along the second connecting sliding groove 3101, the end of the second guide adjusting block 310 away from the rotating plate 305 is provided with a plurality of third locking holes 3102 in communication with the second connecting sliding groove 3101, and the third locking holes 3102 lock the second connecting part 3091 in the second connecting sliding groove 3101 in cooperation with third screws; the end of the second guide adjusting block 310 away from the second fixed seat 309 is provided with a plurality of fourth locking holes 3103 in communication with the second connecting sliding groove 3101, and the fourth locking holes 3103 limit the insertion depth of the second connecting part 3091 in cooperation with fourth screws. By adjusting the position of the second fixed seat 309 on the second guide adjusting block 310, the distance between the pressure roller 2 and the transfer roller 5 can be accurately controlled, so that the device can adapt to lithium foil materials of different thicknesses, the material pressing height can be controlled according to actual needs on site, and therefore the universality and adaptability of the equipment are improved.
[0046] Please refer to Figures 1 to 5 In one embodiment, the front side of the cutter wheel 1 is provided with an oil sticking box 4, the oil sticking box 4 is fixed on the first fixed seat 307, the oil sticking box 4 is provided with a sponge, the sponge stores lubricating oil, and the sponge is in contact with the cutter wheel 1, so that the surface of the cutter wheel 1 can be coated with a lubricating oil film. The lubricating oil film on the surface of the cutter wheel 1 not only helps to prevent the lithium foil material from sticking, but also reduces the friction heat and wear in the cutting process, helps to maintain the sharpness and cutting accuracy of the cutter wheel 1, and therefore improves the cutting efficiency and quality.
[0047] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the utility model.
[0048] The utility model patent has been described above in combination with the drawings, and obviously the implementation of the utility model patent is not limited by the above mode. Any improvement or change of the method concept and technical scheme of the utility model patent, or direct application of the concept and technical scheme of the utility model patent to other occasions without improvement, is within the protection scope of the utility model.
Claims
1. A knife assembly for use with a doctor blade assembly mounted on a transfer roll after calendering, characterized in that, The knife wheel is used to cut the edge thickness of lithium foil material, the pressing wheel is used to flatten the cut edge of lithium foil material, and the position adjusting mechanism is used to drive the knife wheel and the pressing wheel away from or close to the roller surface.
2. The cutter device of claim 1, wherein The knife wheel is located in the front middle part of the pressing wheel.
3. The cutter device of claim 1, wherein The knife wheel and the pressing wheel are arranged with the same center.
4. The cutter apparatus of claim 1, wherein The position adjusting mechanism comprises a cutter fixing seat, a cylinder, a limiting block, a rotating shaft, a rotating plate and a rubber-coated follower roller. When the cylinder lifts the limiting block, the limiting block drives the rotating plate to rotate along the rotating shaft through the rubber-coated follower roller.
5. The cutter device of claim 4, wherein The limiting cavity is formed by an arc surface and two mutually perpendicular planes.
6. The cutter device of claim 4, wherein The knife wheel is fixed on the rotating plate through a first fixing seat.
7. The cutter device of claim 6, wherein The first fixing seat is fixed on the rotating plate through a first guide adjusting block.
8. The cutter apparatus of claim 4, wherein, The first fixing seat is provided with a first connecting part at one end close to the first guide adjusting block. The first guide adjusting block is provided with a first connecting sliding groove at one end close to the first fixing seat. The first connecting part is inserted into the first connecting sliding groove and can slide along the first connecting sliding groove. The first guide adjusting block is provided with a plurality of first locking holes at one end away from the rotating plate. The first locking holes are matched with first screws to lock the first connecting part in the first connecting sliding groove. The first guide adjusting block is provided with a plurality of second locking holes at one end away from the first fixing seat. The second locking holes are matched with second screws to limit the insertion depth of the first connecting part. The pressing wheel is fixed on the rotating plate through a second fixing seat. The second fixing seat is fixed on the rotating plate through a second guide adjusting block.
9. The cutter device of claim 8, wherein The second fixed seat is provided with a second connecting part at one end close to the second guide adjusting block, the second guide adjusting block is provided with a second connecting sliding groove at one end close to the second fixed seat, the second connecting part is inserted into the second connecting sliding groove and can slide along the second connecting sliding groove, the second guide adjusting block is provided with a plurality of third locking holes at one end away from the rotating plate, the third locking holes are communicated with the second connecting sliding groove, and the second connecting part is locked in the second connecting sliding groove in cooperation with third screws; the second guide adjusting block is provided with a plurality of fourth locking holes at one end away from the second fixed seat, the fourth locking holes are communicated with the second connecting sliding groove, and the insertion depth of the second connecting part is limited in cooperation with fourth screws.
10. The cutter apparatus of claim 1, wherein, The front side of the cutter wheel is provided with an oil sticking box, the oil sticking box is provided with a sponge, the sponge stores lubricating oil, and the sponge is in contact with the cutter wheel.