A cutting edge device

Abstract

This utility model relates to the field of battery production equipment technology, and in particular to a cutting edge device. The key technical points of the device include: a frame; a rolling mechanism disposed on the frame for pressing material onto the current collector and driving the electrode sheet to move; a cutting mechanism having a first cutting edge abutting against the rolling mechanism for cutting the edge of the electrode sheet; a scraping mechanism having a second cutting edge abutting against the rolling mechanism for scraping up the edge waste of the electrode sheet; and an adsorption mechanism disposed adjacent to the scraping mechanism for adsorbing the edge waste of the electrode sheet. This application solves the problem that debris easily falls onto the electrode sheet during the cutting edge process.

Description

Technical Field

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

[0002] Dry rolling is an innovative electrode preparation method. This technology uses a dry process to fully mix binders, active materials and conductive agents, and then roll them onto a current collector to prepare the electrode. No solvent is required throughout the process. Dry rolling technology can eliminate the use of toxic solvents (such as NMP) in the battery electrode preparation process, greatly reducing energy consumption and pollution. It is one of the key paths for green manufacturing of lithium batteries.

[0003] Currently, the core of the dry roll forming process lies in using physical shear force to make the binder (such as PTFE) form a three-dimensional fiber network, which encapsulates the active material and conductive agent and is directly calendered into a self-supporting film. In this process, a cladding equipment is usually required, which can roll the material onto the current collector.

[0004] However, current lamination equipment still has many shortcomings. For example, in lithium battery manufacturing, the edge-cutting mechanism is a key step in the production of electrode sheets (positive / negative electrodes). In wet processes, edge cutting is usually used to meet the requirements of subsequent winding, stacking and other processes. However, in dry processes, dry electrodes are more brittle at the edges because they are not wetted by solvents. They are more prone to micro-cracks or debris during cutting. The debris can easily fall onto the electrode sheet, which can lead to safety hazards in the electrode product. Therefore, it is necessary to improve the existing technology.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a cutting device to solve the problem in the prior art where debris easily falls onto the electrode during the cutting process.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A cutting device, comprising:

[0009] frame;

[0010] A rolling mechanism, disposed on the frame, is used to press and cover the material onto the current collector and drive the electrode sheet to move;

[0011] The cutting mechanism has a first cutting edge that abuts against the rolling mechanism for cutting the edge of the electrode sheet;

[0012] The scraper mechanism has a second cutting edge that abuts against the roller pressing mechanism for scraping up the edge waste of the electrode sheet;

[0013] An adsorption mechanism is provided adjacent to the scraper mechanism for removing waste material from the edge of the electrode sheet.

[0014] Preferably, the cutting mechanism includes:

[0015] A cutting blade assembly is rotatably mounted on the frame, with the first cutting edge located on the cutting blade assembly;

[0016] A first pressing component is disposed on the frame and connected to the cutter assembly for pressing and limiting the cutter assembly so that the first cutting edge abuts against the roller pressing mechanism.

[0017] Preferably, the first clamping component includes:

[0018] An adjustment block is detachably mounted on the frame;

[0019] The support element is slidably disposed on the adjustment block;

[0020] And an elastic element, which is connected to the support element and the adjusting block respectively, to apply elastic force to the support element so that the support element and the cutter assembly abut against each other.

[0021] Preferably, the cutter assembly includes:

[0022] The first adjusting arm has one end rotatably mounted on the frame, and the first clamping assembly abuts against the first adjusting arm;

[0023] The first blade body is rotatably mounted on the other end of the first adjusting arm, and the first cutting edge is arranged around the periphery of the first blade body.

[0024] Preferably, the scraper mechanism includes:

[0025] A scraper assembly is rotatably mounted on the frame, with the second cutting edge located on the scraper assembly;

[0026] A second pressing component is disposed on the frame and connected to the scraper assembly for pressing and limiting the scraper assembly so that the second cutting edge abuts against the roller pressing mechanism.

[0027] Preferably, the scraper assembly includes:

[0028] The second adjusting arm has one end rotatably mounted on the frame, and the second clamping assembly abuts against and cooperates with the second adjusting arm;

[0029] And a second blade body, which is fixedly mounted on the other end of the second adjusting arm, with the second cutting edge located on one side edge of the second blade body.

[0030] Preferably, the adsorption mechanism includes:

[0031] The dust removal pipe has one end facing the roller pressing mechanism;

[0032] And an adsorption device, which is connected to the other end of the dust removal pipe, the adsorption device removes waste through the dust removal pipe.

[0033] Preferably, the cutting mechanism, the scraping mechanism, and the adsorption mechanism are configured as two sets, and the two sets of the cutting mechanism, the scraping mechanism, and the adsorption mechanism are respectively used to cut the opposite sides of the electrode sheet.

[0034] Preferably, it further includes an adjustment mechanism, the adjustment mechanism comprising:

[0035] The lead screw is rotatably mounted on the machine frame.

[0036] Guide rods are fixedly mounted on the frame.

[0037] A fixed base is slidably disposed on the guide rod and threadedly connected to the lead screw. The roller pressing mechanism, the cutting mechanism and the scraper mechanism are disposed on the fixed base. The lead screw is used to drive the fixed base to reciprocate.

[0038] Preferably, the rolling mechanism includes a fixed roller and a free roller, wherein the free roller may be closer to or farther away from the fixed roller;

[0039] It also includes a measuring mechanism, which comprises:

[0040] A control system is connected to the roller pressing mechanism;

[0041] And a spectral sensor, connected to the control system, acts on the electrode sheet on the rolling mechanism and is used to obtain the thickness of the electrode sheet; when the thickness of the electrode sheet does not meet the preset value, the control system controls and adjusts the gap size between the fixed roller and the free roller.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The edge-cutting device provided by this utility model uses a roller pressing mechanism to efficiently press material onto the current collector through a rotary motion, thereby obtaining an electrode sheet. At this time, the first cutting edge that abuts against the roller pressing mechanism can cut the edge of the electrode sheet by utilizing the rotary motion of the roller pressing mechanism and the movement of the electrode sheet itself, and can also leave the waste material on the roller pressing mechanism. On this basis, the scraper mechanism can orderly scrape up the edge waste material, and then the waste material is quickly sucked away by the adsorption mechanism. The problem of debris easily falling onto the electrode sheet is solved, and the quality and safety of the electrode sheet product are significantly improved.

[0044] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the edge-cutting device provided in this embodiment of the utility model;

[0047] Figure 2 This is a structural schematic diagram of the edge-cutting device provided in another embodiment of the present utility model;

[0048] Figure 3 This is a cross-sectional view of the cutting assembly provided in this embodiment of the utility model;

[0049] Figure 4 This is a schematic diagram of the roller pressing mechanism and the cutting mechanism provided in this embodiment of the utility model;

[0050] Figure 5 This is a schematic diagram of the structure of the first clamping component provided in this embodiment of the present invention;

[0051] Figure 6 This is a schematic diagram of the scraper mechanism and roller pressing mechanism provided in this embodiment of the utility model;

[0052] Figure 7 This is a schematic diagram of the scraper assembly provided in an embodiment of the present utility model;

[0053] Figure 8This is a schematic diagram of another embodiment of the edge-cutting device provided by this utility model;

[0054] Figure 9 This is a schematic diagram of the adjustment mechanism provided in an embodiment of the present invention.

[0055] Figure label:

[0056] 1. Rack;

[0057] 2. Roller pressing mechanism; 21. Fixed roller; 22. Free roller;

[0058] 3. Cutting mechanism; 31. Cutting assembly; 311. First adjusting arm; 312. First blade body; 32. First clamping assembly; 321. Adjusting block; 3211. Sliding hole; 322. Support element; 323. Elastic element; 324. Set screw;

[0059] 4. Scraper mechanism; 41. Scraper assembly; 411. Second adjusting arm; 412. Second blade body; 42. Second clamping assembly;

[0060] 5. Adsorption mechanism; 51. Dust removal pipe;

[0061] 6. Adjustment mechanism; 61. Lead screw; 62. Guide rod; 63. Fixed base;

[0062] 7. Spectral sensor. Detailed Implementation

[0063] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0064] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0065] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0066] The following is in conjunction with the appendix Figure 1-9 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0067] Please refer to Figure 1 and Figure 2 This utility model provides a cutting device, including a frame 1, a roller pressing mechanism 2, a cutting mechanism 3, a scraping mechanism 4, and an adsorption mechanism 5.

[0068] Roller pressing mechanism 2 is installed on frame 1. Roller pressing mechanism 2 is used to press material onto current collector and drive electrode sheet to move. Cutting mechanism 3 has a first cutting edge that abuts against roller pressing mechanism 2 and is used to cut the edge of electrode sheet. Scraper mechanism 4 has a second cutting edge that abuts against roller pressing mechanism 2 and is used to scrape up waste material from the edge of electrode sheet. Adsorption mechanism 5 is installed adjacent to scraper mechanism 4 and is used to remove waste material from the edge of electrode sheet.

[0069] The frame 1 is used to provide installation positions for the roller pressing mechanism 2, the cutting mechanism 3, the scraping mechanism 4, and the adsorption mechanism 5. In some embodiments, the frame 1 is a three-dimensional frame structure to obtain good support stability. It is understood that each mechanism can be directly installed on the frame 1, or each mechanism can be indirectly installed on the frame 1 through other intermediate parts or structures. Regardless of whether each mechanism is installed on the frame 1 directly or indirectly, the frame 1 can provide a stable support effect for each mechanism. The specific structure of the frame 1 is not limited here.

[0070] Based on this, the rolling mechanism 2 has a roller gap for the electrode sheet to pass through, and the rolling mechanism 2 itself has a rotation function. The current collector passes through the roller gap and is covered on the rolling mechanism 2. On the one hand, the rolling mechanism 2 can drive the current collector to move through the rotational motion, and on the other hand, it can press the material onto the electrode sheet through the roller gap to obtain the electrode sheet product. In this process, the rolling process is efficient and fast, and can also achieve a uniform rolling effect.

[0071] Based on this, the cutting mechanism 3 is adjacent to the rolling mechanism 2, and the first cutting edge faces the rolling mechanism 2 and abuts against it. Therefore, when the electrode moves on the rolling mechanism 2, the first cutting edge cuts the edge of the electrode, thereby realizing the edge cutting process.

[0072] It should be explained that since the electrode sheet is covered on the surface of the roller pressing mechanism 2, it has a certain tension. When the cutting mechanism 3 cuts the electrode sheet, the waste material that is cut will still adhere to the surface of the roller pressing mechanism 2.

[0073] Meanwhile, the scraper mechanism 4 is arranged adjacent to the roller pressing mechanism 2 and the cutter mechanism 3 respectively. The second cutting edge on the scraper mechanism 4 also faces the roller pressing mechanism 2 and abuts against it. When the cutter mechanism 3 cuts the electrode sheet, the second cutting edge scrapes up the waste material so that the adsorption mechanism 5 can clean the waste material. Specifically, the adsorption mechanism 5 can generate an adsorption airflow and adsorb and collect the scraped waste material through the adsorption airflow.

[0074] Based on the above configuration, on the one hand, the scraper mechanism can use the rotation of the roller pressing mechanism 2 to cut the edge of the electrode sheet that has just been rolled, without the need to repeatedly position the electrode sheet, and the cutting efficiency is high and accurate; on the other hand, the scraper mechanism 4 can scoop up the edge waste in an orderly manner, and then the waste is quickly sucked away by the adsorption mechanism 5, thus solving the problem that the debris is easy to fall onto the electrode sheet.

[0075] Reference Figure 3 The cutting mechanism 3 includes a cutting assembly 31 and a first pressing assembly 32. The cutting assembly 31 is rotatably mounted on the frame 1, and the first cutting edge is located on the cutting assembly 31. The first pressing assembly 32 is mounted on the frame 1 and connected to the cutting assembly 31, and is used to press and limit the cutting assembly 31 so that the first cutting edge abuts against the roller pressing mechanism 2.

[0076] In some embodiments, the first clamping component 32 is fixedly connected to the cutter component 31. For example, the first clamping component 32 adopts a screw structure, and the screw is threadedly connected to the cutter component 31. By rotating the screw, the dwell angle of the cutter component 31 can be adjusted. At this time, the first clamping component 32 can provide rigid support for the cutter component 31, so as to provide rigid limit function for the cutter component 31, so that the first cutting edge on the cutter component 31 can remain in contact with the roller pressing mechanism 2.

[0077] In other embodiments, the first clamping component 32 and the cutter component 31 are elastically engaged. For example, an elastic element 323 may be provided in the first clamping component 32, and the elastic element 323 is used to provide elastic support for the cutter component 31, which can also provide a limiting effect for the cutter component 31. In addition, the first clamping component 32 can also enable the cutter component 31 to swing elastically, which plays a buffering role, thereby reducing the wear of the first cutting edge and extending the service life of the structure.

[0078] Therefore, regardless of the specific support and limiting effect adopted by the first clamping component 32, it should be included in the scope of this solution and no specific restrictions are imposed here.

[0079] In some specific embodiments, refer to Figure 4 The first clamping assembly 32 provides an elastic limiting effect for the cutter assembly 31. The first clamping assembly 32 includes an adjusting block 321, a support element 322, and an elastic element 323. The adjusting block 321 is detachably mounted on the frame 1, the support element 322 is slidably mounted on the adjusting block 321, and the elastic element 323 is connected to both the support element 322 and the adjusting block 321 to apply elastic force to the support element 322 so that the support element 322 abuts against the cutter assembly 31.

[0080] The adjusting block 321 can be fixed to the frame 1 directly or indirectly. In some embodiments, the adjusting block 321 can be detachably installed on the frame 1 by means of threaded fasteners. By opening multiple spaced threaded holes or waist-shaped adjustment holes on the frame 1, the installation position of the adjusting block 321 can be further fine-tuned, thereby changing the installation angle of the cutter assembly 31, realizing flexible assembly at multiple angles, and meeting the assembly needs under various different scenarios. The specific installation method of the adjusting block 321 is not limited here.

[0081] Based on this, the adjusting block 321 is provided with a sliding hole 3211, and the support element 322 is slidably disposed in the sliding hole 3211. In some embodiments, the support element 322 adopts a block structure, and one end of the sliding hole 3211 is open on one side of the adjusting block 321. The sliding hole 3211 can provide sliding guidance for the support element 322. Under the action of the sliding hole 3211, the support element 322 can slide back and forth relative to the adjusting block 321 along a straight line, and the support element 322 is used to abut against the cutter assembly 31.

[0082] Based on this, the elastic element 323 adopts a spring structure. The elastic element 323 is located in the sliding hole 3211, and its two ends are respectively connected to the support element 322 and the adjustment block 321. When the elastic element 323 is in its natural state, the elastic element 323 pushes the support element 322 to extend through the opening end of the sliding hole 3211 to the outside of the adjustment block 321, so as to maintain an elastic contact with the cutter assembly 31.

[0083] Based on the above settings, the adjustment block 321 can provide a support installation position for the support element 322 and the elastic element 323. At this time, under the action of the elastic element 323, the support element 322 can elastically abut against the cutter assembly 31, thereby providing a buffering effect for the cutter assembly 31 and significantly improving the service life of the structure.

[0084] Optionally, in some embodiments, to facilitate the assembly of the elastic element 323 and the support element 322, the sliding hole 3211 can be configured as a stepped hole structure, and the sliding hole 3211 can pass through the opposite sides of the adjusting block 321. At this time, the support element 322 can be inserted into the sliding hole 3211 from one end opening and protrude from the other end opening. The step on the inner wall of the sliding hole 3211 can restrict the support element 322 from loosening from the sliding hole 3211. Subsequently, the elastic element 323 is inserted into the sliding hole 3211, so that one end abuts against the support element 322, and a set screw 324 is installed at the open end of the sliding hole 3211. The set screw 324 abuts against the other end of the elastic element 323, thereby completing the installation. The overall assembly process is convenient and efficient, and it also facilitates structural replacement and maintenance.

[0085] Optionally, in some embodiments, to further improve the structural lifespan, a pad can be provided in the area where the support element 322 abuts against the cutter assembly 31. The pad can be a flexible pad structure, which can avoid rigid contact between the support element 322 and the cutter assembly 31, thereby reducing the possibility of structural wear and further optimizing and improving the structural lifespan.

[0086] Reference Figure 5 In some embodiments, the cutting assembly 31 includes a first adjusting arm 311 and a first blade body 312. One end of the first adjusting arm 311 is rotatably mounted on the frame 1, and the first clamping assembly 32 abuts against the first adjusting arm 311; the first blade body 312 is rotatably mounted on the other end of the first adjusting arm 311, and a first cutting edge is arranged around the periphery of the first blade body 312.

[0087] Specifically, the first adjusting arm 311 adopts a long, straight arm structure. One end of the arm is directly or indirectly mounted on the frame 1 via a rotating shaft and bearing. At this time, the first adjusting arm 311 can swing around one end. Meanwhile, the first cutter body 312 is located at the other end of the first adjusting arm 311. During the swinging of the first adjusting arm 311, the first cutter body 312 swings synchronously, thereby moving closer to or further away from the roller pressing mechanism 2, thus changing the cutting depth. At the same time, it can also obtain a buffer space to meet the cutting edge conditions under different circumstances.

[0088] Furthermore, the first blade body 312 adopts a circular blade body structure, which is rotatably mounted on the first adjusting arm 311 via a rotating shaft and bearings. The first cutting edge is arranged around the periphery of the first blade body 312, thereby forming a circular first cutting edge structure. At this time, the first blade body 312 is perpendicular to the surface of the roller pressing mechanism 2, and the first blade body 312 is parallel to the moving direction of the electrode sheet. The first blade body 312 can continuously cut the edge of the electrode sheet along the length direction of the electrode sheet.

[0089] Based on the above settings, the first adjusting arm 311 can provide swing space for the first cutter body 312. At this time, the first cutter body 312 can perform rolling cuts on the electrode sheet, and the cut marks on the electrode sheet are uniform and continuous, resulting in a significant cutting effect.

[0090] Reference Figure 6 In some embodiments, the scraper mechanism 4 includes a scraper assembly 41 and a second pressing assembly 42. The scraper assembly 41 is rotatably mounted on the frame 1, and the second cutting edge is located on the scraper assembly 41. The second pressing assembly 42 is mounted on the frame 1 and connected to the scraper assembly 41, and is used to press and limit the scraper assembly 41 so that the second cutting edge abuts against the roller pressing mechanism 2.

[0091] In some embodiments, the second clamping component 42 is fixedly connected to the scraper component 41. For example, the second clamping component 42 adopts a screw structure, and the screw is threadedly connected to the scraper component 41. By rotating the screw, the dwell angle of the scraper component 41 can be adjusted. At this time, the second clamping component 42 can provide rigid support for the scraper component 41, so as to provide rigid limit function for the scraper component 41, so that the second cutting edge on the scraper component 41 can remain in contact with the roller pressing mechanism 2.

[0092] In other embodiments, the second clamping component 42 is elastically engaged with the scraper component 41. For example, an elastic element 323 may be provided in the second clamping component 42, and the elastic element 323 is used to provide elastic support for the scraper component 41, which can also provide a limiting effect for the scraper component 41. In addition, the second clamping component 42 can also enable the scraper component 41 to swing elastically, which plays a buffering role, thereby reducing the wear of the second cutting edge and extending the service life of the structure.

[0093] Therefore, regardless of the specific support and limiting effect adopted by the second clamping component 42, it should be included in the scope of this solution and no specific restrictions are imposed here.

[0094] In some specific embodiments, the second clamping component 42 provides an elastic limiting effect for the scraper component 41. The specific structure of the second clamping component 42 is the same as or similar to that of the first clamping component 32. The specific structure of the second clamping component 42 will not be described in detail here.

[0095] Based on this, the difference between the cutting mechanism 3 and the scraper mechanism 4 lies in the difference between the scraper assembly 41 and the cutting assembly 31.

[0096] Specifically, refer to Figure 7In some embodiments, the scraper assembly 41 includes a second adjusting arm 411 and a second blade body 412. One end of the second adjusting arm 411 is rotatably mounted on the frame 1, and the second clamping assembly 42 abuts against the second adjusting arm 411. The second blade body 412 is fixedly mounted on the other end of the second adjusting arm 411, and the second cutting edge is located at one side edge of the second blade body 412.

[0097] The second adjusting arm 411 is a long, straight arm structure. One end of it is directly or indirectly mounted on the frame 1 via a rotating shaft and bearings, allowing the second adjusting arm 411 to swing around one end. Simultaneously, the second cutter body 412 is located at the other end of the second adjusting arm 411. During the swinging of the second adjusting arm 411, the second cutter body 412 swings synchronously, moving closer to or further away from the roller pressing mechanism 2, thereby adjusting the tightness of the fit between the second cutter head and the roller pressing mechanism 2.

[0098] Furthermore, the second blade 412 adopts a flat blade structure, which is fixed to the other end of the first adjusting arm 311 by any of the following methods: riveting, threaded connection or welding. There are no restrictions on its specific installation method. One side edge is ground to form a straight second cutting edge. At this time, the second cutting edge is in contact with the surface of the roller pressing mechanism 2, and the length direction of the second cutting edge is perpendicular to the moving direction of the electrode. During the movement of the electrode, the second cutting edge can continuously scrape up the waste material at the edge, so that the waste material is separated from the roller pressing mechanism 2.

[0099] Based on the above configuration, the second adjusting arm 411 can provide swing space for the second blade 412, thereby changing the cooperation force between the second blade 412 and the roller pressing mechanism 2, so that the second blade 412 can fit tightly against the surface of the roller pressing mechanism 2, and thus can continuously remove the edge waste of the electrode sheet.

[0100] Reference Figure 8 and combined Figure 2 After the waste is removed, in order to ensure that the waste can be efficiently discharged, in some embodiments, the adsorption mechanism 5 includes a dust removal pipe 51 and an adsorption device (not shown in the figure). One end of the dust removal pipe 51 faces the roller pressing mechanism 2, and the adsorption device is connected to the other end of the dust removal pipe 51. The adsorption device removes the waste through the dust removal pipe 51.

[0101] Understandably, the dust removal pipe 51 can be directly or indirectly fixed to the frame 1. At this time, the dust removal pipe 51 has a suction port, which is close to the second blade 412 and faces the second cutting edge. At this time, the other end of the dust removal pipe 51 is connected to the adsorption device. The adsorption device is usually an industrial vacuum cleaner, which can generate a large negative pressure airflow, allowing air to flow in from the suction port, thereby generating adsorption force. At this time, the waste scooped up by the second cutting edge can be brought into the suction port, and the waste passes through the dust removal pipe 51 to reach the adsorption device, ultimately achieving the removal of waste.

[0102] Based on the above setup, a strong suction force can be generated using the adsorption device, and waste can be precisely removed through the dust removal pipe 51. The waste is not likely to fall onto the electrode after being cut, and the whole process is efficient and reliable.

[0103] In some embodiments, continue to refer to Figure 8 The cutting mechanism 3, the scraping mechanism 4, and the adsorption mechanism 5 are set into two groups. The two groups of cutting mechanism 3, scraping mechanism 4, and adsorption mechanism 5 are used to cut the opposite sides of the electrode sheet respectively.

[0104] Based on the above configuration, the two sets of cutting mechanisms 3, scraping mechanism 4, and adsorption mechanism 5 can simultaneously cut the opposite sides of the electrode sheet, significantly improving the cutting efficiency.

[0105] Furthermore, referring to Figure 8 and Figure 9 In different battery products, the width of the electrode sheet has different parameter dimensions. Here, to meet the edge cutting requirements of multiple specifications of electrode sheets, the edge cutting device also includes an adjustment mechanism 6. The adjustment mechanism 6 includes a lead screw 61, a guide rod 62 and a fixed seat 63. The rolling mechanism 2, the cutting mechanism 3 and the scraping mechanism 4 are indirectly mounted on the frame 1 through the adjustment mechanism 6.

[0106] The lead screw 61 is rotatably mounted on the frame 1, the guide rod 62 is fixedly mounted on the frame 1, the fixed seat 63 is slidably mounted on the guide rod 62 and threadedly connected to the lead screw 61, the roller pressing mechanism 2, the cutting mechanism 3 and the scraping mechanism 4 are mounted on the fixed seat 63, and the lead screw 61 is used to drive the fixed seat 63 to reciprocate.

[0107] Specifically, the two ends of the lead screw 61 are rotatably mounted on the frame 1 via bearings. At this time, the lead screw 61 is set horizontally, and the two ends of the guide rod 62 are fixedly set on the frame 1, with the guide rod 62 parallel to the lead screw 61. The fixed seat 63 has a plate-like structure and a threaded sleeve is provided on the fixed seat 63. The lead screw 61 passes through the threaded sleeve and is threadedly connected to it. Based on the above configuration, the lead screw 61 is threadedly connected to the fixed seat 63 through the threaded sleeve.

[0108] Based on this, the fixed seat 63 is also fixedly provided with a guide sleeve. The guide rod 62 passes through the guide sleeve and slides with it. Under the guidance of the guide sleeve, the fixed seat 63 slides with the guide rod 62. The guide rod 62 provides sliding guidance for the fixed seat 63. At this time, the screw 61 can be rotated in the forward or reverse direction. Under the action of the threaded connection, the fixed seat 63 can be pushed to move back and forth, which in turn can drive the cutting mechanism 3, the scraping mechanism 4 and the suction mechanism 5 to move back and forth.

[0109] Based on the above settings, by changing the relative positions of the cutting mechanism 3, the scraping mechanism 4, and the adsorption mechanism 5 with respect to the rolling mechanism 2, the cutting edge area of ​​the electrode sheet can be changed to meet the cutting edge processing requirements of electrode sheets of various specifications.

[0110] Optionally, in some embodiments, the lead screw 61 can be manually driven for adjustment. In this case, a handwheel can be installed at the end of the lead screw 61, and the user can rotate the lead screw 61 by holding the handwheel.

[0111] In other embodiments, the lead screw 61 can also be equipped with an automatic adjustment function. In this embodiment, the lead screw 61 can be connected to a motor component for transmission. The motor component can output torque, thereby driving the lead screw 61 to rotate. This can also achieve the adjustment of the cutting edge position.

[0112] It is understandable that the specific adjustment method of lead screw 61 can be adjusted according to actual needs, and no specific restrictions are made here.

[0113] Furthermore, when the cutting mechanism 3, the scraping mechanism 4, and the adsorption mechanism 5 are set to two sets, the number of adjusting mechanisms 6 is correspondingly set to two sets, and the two sets of cutting mechanisms 3, scraping mechanisms 4, and adsorption mechanisms 5 are respectively arranged on the two sets of adjusting mechanisms 6. In this way, the positions of the two sets of cutting mechanisms 3, scraping mechanisms 4, and adsorption mechanisms 5 can be adjusted separately, making the structure more flexible. The specific number of adjusting mechanisms 6 can be adapted to the specific number of cutting mechanisms 3, scraping mechanisms 4, and adsorption mechanisms 5. Here, there is no limitation on the specific number of adjusting mechanisms 6.

[0114] In some embodiments, continue to refer to Figure 8 To achieve the dry rolling process, the rolling mechanism 2 includes a fixed roller 21 and a free roller 22, which can be closer to or farther away from the fixed roller 21.

[0115] Specifically, on the one hand, the fixed roller 21 and the free roller 22 can be connected to the motor module respectively, so that the rotation is achieved by the torque output by the motor module. At this time, there is a roller gap between the fixed roller 21 and the free roller 22. By passing the current collector through the roller gap and covering the free roller 22 and the fixed roller 21 respectively, the material can be pressed onto the current collector in the roller gap, thereby realizing the roll forming action.

[0116] On the other hand, the two ends of the free roller 22 are rotatably mounted on the frame 1 through two floating bearing seats (not shown in the figure). At this time, the free roller 22 can reciprocate, thereby obtaining a degree of freedom of motion. Based on this, the floating bearing seats can be connected to a telescopic module. The telescopic module can output telescopic motion, such as telescopic cylinders, telescopic motors, etc. Under the drive of the telescopic module, the free roller 22 can be moved closer to or further away from the fixed roller 21.

[0117] Based on the above settings, during the reciprocating movement of the free roller 22, the gap size between the fixed roller 21 and the free roller 22 changes, and the specific size of the gap often determines the thickness of the material coated on the current collector. Therefore, the size of the gap directly corresponds to the rolling accuracy and product quality.

[0118] Based on this, to improve the roll gap accuracy, a measuring mechanism is also included, which includes a control system and a spectral sensor 7. The control system is connected to the rolling mechanism 2, and the spectral sensor 7 is connected to the control system. It acts on the electrode on the rolling mechanism 2 and is used to obtain the thickness of the electrode. When the thickness of the electrode does not meet the preset value, the control system controls and adjusts the roll gap size between the fixed roller 21 and the free roller 22.

[0119] Specifically, in some embodiments, the control system mainly includes a control chip, which has functions such as reading, processing and calculating signals. The specific principles of the control system will not be elaborated here.

[0120] At this time, the control chip has a receiving end and an output end. The receiving end of the control chip is electrically connected to the spectral sensor 7, and the output end of the control chip is electrically connected to the telescopic module. At this time, the spectral sensor 7 can obtain the thickness signal of the electrode by emitting measurement light and send it to the receiving end of the control chip.

[0121] At this point, the preset thickness value of the electrode under the ideal size can be obtained based on the electrode design size. The control system compares the preset value with the thickness signal and determines whether the current thickness of the electrode is within the error range. If it is within the range, there is no need to adjust the current roll gap size. If it is not within the range, the control system generates a control signal and sends it to the telescopic module through the output terminal. The telescopic module responds to the control signal and adjusts the position of the free roller 22, so that the roll gap is adjusted until the thickness of the electrode meets the error requirements.

[0122] Based on the above settings, the current roll gap size can be dynamically adjusted under the action of the measuring mechanism, thereby further changing the roll pressing thickness of the electrode sheet, and finally obtaining high-precision electrode sheet product dimensions, resulting in a significant optimization and improvement in product quality.

[0123] The edge-cutting device provided in this application has the following beneficial effects:

[0124] 1. It can prevent debris from falling onto the electrode, significantly improving the safety and molding quality of the electrode;

[0125] 2. It can perform the edge trimming process simultaneously with the roll forming process, resulting in high electrode forming efficiency;

[0126] 3. It can monitor the thickness of the rolls and effectively reduce material waste in the process by dynamically adjusting the roll gap size. It can also facilitate the handling of abnormal problems in the process flow.

[0127] Therefore, the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An edging device, characterized in that, include: Rack (1); A roller pressing mechanism (2) is provided on the frame (1) for pressing material onto the current collector and driving the electrode sheet to move; The cutting mechanism (3) has a first cutting edge that abuts against the roller pressing mechanism (2) for cutting the edge of the electrode sheet; The scraper mechanism (4) has a second cutting edge that abuts against the roller pressing mechanism (2) for scraping up the edge waste of the electrode sheet; And an adsorption mechanism (5) is arranged adjacent to the scraper mechanism (4) for removing edge waste from the electrode sheet.

2. The edging device of claim 1, wherein The cutting mechanism (3) includes: A cutting blade assembly (31) is rotatably mounted on the frame (1), with the first cutting edge located on the cutting blade assembly (31); And a first pressing assembly (32), which is disposed on the frame (1) and connected to the cutter assembly (31), is used to press and limit the cutter assembly (31) so that the first cutting edge abuts against the roller pressing mechanism (2).

3. The edging device of claim 2, wherein The first clamping assembly (32) includes: Adjustment block (321) is detachably mounted on the frame (1); The support element (322) is slidably disposed on the adjustment block (321); And an elastic element (323) is connected to the support element (322) and the adjustment block (321) respectively, for applying elastic force to the support element (322) so that the support element (322) and the cutter assembly (31) abut against each other.

4. The edging device of claim 2, wherein The cutting blade assembly (31) includes: The first adjusting arm (311) is rotatably mounted on the frame (1) at one end, and the first pressing assembly (32) abuts against the first adjusting arm (311); And a first blade body (312), which is rotatably disposed at the other end of the first adjusting arm (311), with the first cutting edge surrounding the periphery of the first blade body (312).

5. The edge-cutting device according to claim 1, characterized in that, The scraper mechanism (4) includes: A scraper assembly (41) is rotatably mounted on the frame (1), and the second cutting edge is located on the scraper assembly (41); And a second pressing assembly (42), which is disposed on the frame (1) and connected to the scraper assembly (41), is used to press and limit the scraper assembly (41) so that the second cutting edge abuts against the roller pressing mechanism (2).

6. The edge-cutting device according to claim 5, characterized in that, The scraper assembly (41) includes: The second adjusting arm (411) is rotatably mounted on the frame (1) at one end, and the second pressing assembly (42) abuts against the second adjusting arm (411); And a second blade (412) is fixedly disposed at the other end of the second adjusting arm (411), and the second cutting edge is located at one side edge of the second blade (412).

7. The edge-cutting device according to claim 1, characterized in that, The adsorption mechanism (5) includes: Dust removal pipe (51), one end of which faces the roller pressing mechanism (2); And an adsorption device, which is connected to the other end of the dust removal pipe (51), the adsorption device removes waste through the dust removal pipe (51).

8. The edge-cutting device according to claim 1, characterized in that, The cutting mechanism (3), scraping mechanism (4) and adsorption mechanism (5) are configured as two sets, and the two sets of cutting mechanism (3), scraping mechanism (4) and adsorption mechanism (5) are respectively used to cut the opposite sides of the electrode sheet.

9. The edge-cutting device according to claim 1, characterized in that, It also includes an adjustment mechanism (6), which comprises: The lead screw (61) is rotatably mounted on the frame (1): Guide rod (62) is fixedly mounted on the frame (1): The fixed seat (63) is slidably disposed on the guide rod (62) and threadedly connected to the lead screw (61). The roller pressing mechanism (2), the cutting mechanism (3) and the scraper mechanism (4) are disposed on the fixed seat (63). The lead screw (61) is used to drive the fixed seat (63) to reciprocate.

10. The edge-cutting device according to claim 1, characterized in that, The rolling mechanism (2) includes a fixed roller (21) and a free roller (22), the free roller (22) being closer to or further away from the fixed roller (21); It also includes a measuring mechanism, which comprises: The control system is connected to the roller pressing mechanism (2); And a spectral sensor (7) is connected to the control system and acts on the electrode on the roller pressing mechanism (2) to obtain the thickness of the electrode; when the thickness of the electrode does not meet the preset value, the control system controls and adjusts the gap size between the fixed roller (21) and the free roller (22).

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