Pole piece die cutting device

Abstract

The utility model discloses a pole piece die cutting device, and belongs to the technical field of battery production. The pole piece die cutting device comprises a first die cutting mechanism, a second die cutting mechanism and a cleaning mechanism. The first die cutting mechanism comprises a first die cutting assembly and a first die cutter connected with the first die cutting assembly. The second die cutting mechanism comprises a second die cutting assembly and a second die cutter connected with the second die cutting assembly. The second die-cutting knife is oppositely arranged below the first die-cutting knife, the first die-cutting knife and the second die-cutting knife can be close to or separated from each other along the Z axis, and the first die-cutting knife and the second die-cutting knife are matched in a concave-convex mode to carry out die cutting on the pole piece; the cleaning mechanism comprises a cleaning assembly, a first nozzle and a second nozzle, the first nozzle and the second nozzle are connected with the cleaning assembly, the first nozzle is used for spray-washing the first die-cutting rule, and the second nozzle is used for spray-washing the second die-cutting rule; the die-cutting efficiency of the pole piece is high, and the cleanliness of the first die-cutting knife and the second die-cutting knife can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to an electrode die-cutting device. Background Technology

[0002] In the stacking process of lithium battery production, the roll of positive and negative electrode sheets is die-cut into small rectangular pieces by a die-cutting device. The die-cut rectangular pieces are then stacked with a separator to form a single cell. Finally, the individual cells are stacked to form a lithium battery.

[0003] In the process of die-cutting electrode sheets by the die-cutting blade of the die-cutting device, the material scraps from the electrode sheets can easily remain on the die-cutting blade. This can cause the die-cutting blade to crush the new electrode sheets to be die-cut during the next die-cutting, thus damaging the electrode sheets. Therefore, after die-cutting the electrode sheets, the machine is usually stopped and the die-cutting blade is cleaned manually to ensure the cleanliness of the die-cutting blade and thus better protect the electrode sheets to be die-cut.

[0004] However, the manual cleaning method described above is time-consuming and labor-intensive, resulting in low die-cutting efficiency of the electrode sheets. Furthermore, due to the variability of manual cleaning, it is impossible to accurately guarantee the cleanliness of the die-cutting blade. Moreover, the need to stop the machine for cleaning further reduces the die-cutting efficiency of the electrode sheets.

[0005] To address the above problems, there is an urgent need for an electrode die-cutting device. Utility Model Content

[0006] The purpose of this invention is to provide an electrode die-cutting device that can automatically spray and clean the first and second die-cutting blades, thereby achieving high die-cutting efficiency of the electrode and ensuring the cleanliness of the first and second die-cutting blades.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] An electrode die-cutting apparatus, comprising:

[0009] The first die-cutting mechanism includes a first die-cutting assembly and a first die-cutting blade connected thereto;

[0010] The second die-cutting mechanism includes a second die-cutting assembly and a second die-cutting blade connected thereto;

[0011] The second die-cutting blade is positioned below the first die-cutting blade. The first and second die-cutting blades can approach or disengage from each other along the Z-axis. The first and second die-cutting blades engage with each other to die-cut the electrode sheet.

[0012] A cleaning mechanism includes a cleaning component and a first nozzle and a second nozzle connected thereto, the first nozzle being used to clean the first die-cutting blade and the second nozzle being used to clean the second die-cutting blade.

[0013] As an optional solution, one end of the cleaning component is rotatably connected to the first die-cutting component about the Z-axis, and the first nozzle and the second nozzle are respectively connected to the other end of the cleaning component. When the first die-cutting blade and the second die-cutting blade are disengaged from each other along the Z-axis, the first nozzle sprays water onto the first die-cutting blade, and the second nozzle sprays water onto the second die-cutting blade.

[0014] As an optional solution, the cleaning component includes:

[0015] A connecting rod, one end of which is rotatably connected to the top of the first die-cutting assembly about the Z-axis;

[0016] A sensor is connected to the other end of the connecting rod. The sensor is used to detect the positions of the first die-cutting blade and the second die-cutting blade. The sensor is communicatively connected to the connecting rod.

[0017] The first fixing member and the first connecting pipe are connected to the lower part of the sensor. The two ends of the first connecting pipe are respectively connected to the first fixing member and the first nozzle. The first connecting pipe is used to spray cleaning gas or cleaning liquid into the first nozzle.

[0018] The second fixing member and the second connecting pipe are connected at intervals below the first fixing member. The two ends of the second connecting pipe are respectively connected to the second fixing member and the second nozzle. The second connecting pipe is used to spray cleaning gas or cleaning liquid into the second nozzle.

[0019] As an optional solution, one end of the connecting rod can be detachably connected to the top of the first die-cutting assembly.

[0020] As an optional feature, the cleaning component also includes:

[0021] The first telescopic component is capable of extending and retracting vertically along the Z-axis. The sensor is connected to the first fixed component via the first telescopic component, and the sensor is communicatively connected to the first telescopic component.

[0022] The second telescopic component is capable of extending and retracting vertically along the Z-axis. The first fixed component and the second fixed component are connected by the second telescopic component, and the sensor is communicatively connected to the second telescopic component.

[0023] As an optional solution, the first die-cutting component includes:

[0024] A top plate, which is fixedly installed, with one end of the cleaning component rotatably connected to the top of the top plate about the Z-axis;

[0025] The third telescopic component has one end connected to the bottom end of the top plate and the other end connected to the first die-cutting blade. The third telescopic component is used to drive the first die-cutting blade to move up and down along the Z-axis.

[0026] As an optional solution, the second die-cutting component includes:

[0027] The first support plate is fixedly installed;

[0028] The fourth telescopic component has one end mounted on the first support plate and the other end connected to the second die-cutting blade. The fourth telescopic component is used to drive the second die-cutting blade to move up and down along the Z-axis.

[0029] As an optional solution, the second die-cutting component further includes:

[0030] The second support plate is parallel to and fixedly disposed below the first support plate;

[0031] A push plate, located above the second support plate, is capable of sliding upward along the Z-axis and is connected to the fourth telescopic member;

[0032] The fifth telescopic component passes through the second support plate and is connected to the push plate. The fifth telescopic component is used to drive the push plate to move up and down along the Z-axis.

[0033] As an option, one of the first die-cutting blade and the second die-cutting blade may have a protrusion structure and the other may have a groove structure.

[0034] As an optional solution, the electrode die-cutting device further includes an over-cutting prevention mechanism, which limits the cutting depth between the first die-cutting blade and the second die-cutting blade; the over-cutting prevention mechanism includes:

[0035] The first limiting post extends along the Z-axis and is detachably connected to the first die-cutting assembly. The first limiting post is located on one side of the first die-cutting blade.

[0036] The second limiting post extends along the Z-axis and is positioned directly opposite the first limiting post. The second limiting post is detachably connected to the second die-cutting assembly. The second limiting post is located on one side of the second die-cutting blade. The first limiting post and the second limiting post can abut against each other.

[0037] The beneficial effects of this utility model are as follows:

[0038] By connecting the first die-cutting blade to the first die-cutting assembly and the second die-cutting blade to the second die-cutting assembly, with the second die-cutting blade positioned opposite and below the first die-cutting blade, and the first and second die-cutting blades able to approach or disengage along the Z-axis, the first and second die-cutting blades engage in a concave-convex fit to die-cut the electrode sheet. Simultaneously, the first die-cutting blade is automatically cleaned by spraying it with a first nozzle, and the second die-cutting blade is automatically cleaned with a second nozzle. This automatic cleaning method saves time and effort, resulting in higher die-cutting efficiency for the electrode sheet. Furthermore, by eliminating the variability of manual cleaning, the cleanliness of the first and second die-cutting blades can be accurately guaranteed. Moreover, cleaning does not require machine downtime, further improving the die-cutting efficiency of the electrode sheet. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the electrode die-cutting device provided in this utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1-First die-cutting mechanism; 11-First die-cutting assembly; 111-Top plate; 112-Third telescopic component; 12-First die-cutting blade;

[0042] 2-Second die-cutting mechanism; 21-Second die-cutting assembly; 211-First support plate; 212-Fourth telescopic component; 213-Second support plate; 214-Push plate; 215-Fifth telescopic component; 22-Second die-cutting blade;

[0043] 3-Cleaning mechanism; 311-Connecting rod; 312-Sensor; 313-First fixing member; 314-First connecting pipe; 315-Second fixing member; 316-Second connecting pipe; 317-First telescopic member; 318-Second telescopic member; 319-Rotating structure; 32-First nozzle; 33-Second nozzle;

[0044] 4- Anti-overcutting mechanism; 41- First limit post; 42- Second limit post. Detailed Implementation

[0045] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0046] Any feature disclosed in this specification, unless specifically stated otherwise, may be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features. Throughout this specification, the same reference numerals indicate the same elements.

[0047] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] This embodiment proposes an electrode die-cutting device that can die-cut rolled electrode sheets into rectangular pieces. During the die-cutting process, it automatically cleans up any loose material or foreign matter, ensuring a good die-cutting effect without damaging the electrode sheets and achieving high die-cutting efficiency. The electrode sheets can specifically be either positive or negative electrodes from a battery; no specific limitation is made here.

[0049] Specifically, such as Figure 1 As shown, the electrode die-cutting device includes a first die-cutting mechanism 1, a second die-cutting mechanism 2, and a cleaning mechanism 3. The first die-cutting mechanism 1 includes a first die-cutting assembly 11 and a first die-cutting blade 12 connected thereto. The second die-cutting mechanism 2 includes a second die-cutting assembly 21 and a second die-cutting blade 22 connected thereto. The second die-cutting blade 22 is disposed opposite to the first die-cutting blade 12 below it. The first die-cutting blade 12 and the second die-cutting blade 22 can move closer to each other or separate along the Z-axis so that the first die-cutting blade 12 and the second die-cutting blade 22 can engage with each other to die-cut the rolled electrode into rectangular pieces. The cleaning mechanism 3 includes a cleaning assembly and a first nozzle 32 and a second nozzle 33 connected thereto. The first nozzle 32 is used to spray and clean the first die-cutting blade 12, and the second nozzle 33 is used to spray and clean the second die-cutting blade 22.

[0050] Compared with the prior art, the electrode die-cutting device in this embodiment adds a cleaning mechanism 3 to automatically clean the foreign matter remaining after die-cutting without stopping the machine. The first die-cutting blade 12 is connected to the first die-cutting assembly 11, and the second die-cutting blade 22 is connected to the second die-cutting assembly 21. The second die-cutting blade 22 is positioned below the first die-cutting blade 12, and the first and second die-cutting blades 12 and 22 can move closer together or separate along the Z-axis. This allows the first and second die-cutting blades 12 and 22 to engage in a concave-convex fit to die-cut the electrode sheet, thereby obtaining the desired shape. The device produces rectangular electrode sheets of the specified dimensions. Simultaneously, it can automatically clean the first die-cutting blade 12 by spraying the first nozzle 32 and the second die-cutting blade 22 by spraying the second nozzle 33. This automatic cleaning method saves time and effort, resulting in higher die-cutting efficiency. Furthermore, by eliminating the variations inherent in manual cleaning, the cleanliness of the first and second die-cutting blades 12 and 22 can be accurately guaranteed. Moreover, since cleaning the first and second die-cutting blades 12 and 22 does not require stopping the machine, the die-cutting efficiency of the electrode sheets is further improved.

[0051] Furthermore, such as Figure 1As shown, one end of the cleaning component is rotatably connected to the first die-cutting component 11 around the Z-axis, and the first nozzle 32 and the second nozzle 33 are respectively connected to the other end of the cleaning component. When the first die-cutting blade 12 and the second die-cutting blade 22 are separated from each other along the Z-axis, the first nozzle 32 sprays and washes the first die-cutting blade 12, and the second nozzle 33 sprays and washes the second die-cutting blade 22.

[0052] By rotating one end of the cleaning component around the Z-axis and connecting it to the first die-cutting component 11, and connecting the first nozzle 32 and the second nozzle 33 to the other end of the cleaning component, the cleaning component can drive the first nozzle 32 and the second nozzle 33 to rotate around the Z-axis to a suitable spraying position after the first die-cutting blade 12 and the second die-cutting blade 22 have cut the electrode sheet. Thus, during the process of the first die-cutting blade 12 and the second die-cutting blade 22 disengaging from each other and automatically resetting, the first nozzle 32 sprays and washes the first die-cutting blade 12, and the second nozzle 33 sprays and washes the second die-cutting blade 22, thereby achieving automatic spraying and cleaning of the first die-cutting blade 12 and the second die-cutting blade 22. That is, cleaning is performed while the first die-cutting blade 12 and the second die-cutting blade 22 are disengaging from each other and automatically resetting, thus ensuring that cleaning does not require stopping the machine, thereby further improving the die-cutting efficiency of the electrode sheet.

[0053] The following is a detailed description of cleaning agency 3:

[0054] Furthermore, such as Figure 1 As shown, both the first nozzle 32 and the second nozzle 33 have a V-shaped structure. That is, the first nozzle 32 with a V-shaped structure is positioned towards the first die-cutting blade 12, and the second nozzle 33 with a V-shaped structure is positioned towards the second die-cutting blade 22. This increases the spray area of ​​the first nozzle 32 on the first die-cutting blade 12 and the spray area of ​​the second nozzle 33 on the second die-cutting blade 22, thereby ensuring a better spraying effect on the first die-cutting blade 12 and the second die-cutting blade 22.

[0055] It is worth noting that since one end of the cleaning component is rotatably connected to the first die-cutting component 11 around the Z-axis, the first nozzle 32 and the second nozzle 33 can be driven to rotate around the Z-axis through the cleaning component. This allows the first nozzle 32 to rotate relative to the first die-cutting blade 12 on its outer periphery, and the second nozzle 33 to rotate relative to the second die-cutting blade 22 on its outer periphery. On the one hand, this ensures that the cleaning component drives the first nozzle 32 and the second nozzle 33 to rotate around the Z-axis to a suitable spraying position, thus providing accurate positioning for the cleaning of the first die-cutting blade 12 and the second die-cutting blade 22. On the other hand, while the first nozzle 32 and the second nozzle 33 are spraying and cleaning, they can also rotate around the Z-axis, allowing the first nozzle 32 and the second nozzle 33 to perform a rotating and circling spray cleaning, thereby ensuring a more comprehensive cleaning effect on the first die-cutting blade 12 and the second die-cutting blade 22.

[0056] Furthermore, such as Figure 1 As shown, the cleaning assembly includes a connecting rod 311, a sensor 312, a first fixing member 313, a first connecting pipe 314, a second fixing member 315, and a second connecting pipe 316. One end of the connecting rod 311 is rotatably connected to the top of the first die-cutting assembly 11 around the Z-axis. The sensor 312 is connected to the other end of the connecting rod 311 and is used to detect the positions of the first die-cutting blade 12 and the second die-cutting blade 22. The sensor 312 is communicatively connected to the connecting rod 311. The first fixing member 313 is connected below the sensor 312. The two ends of the first connecting pipe 314 are respectively connected to the first fixing member 313 and the first nozzle 32. The first connecting pipe 314 is used to spray cleaning gas or cleaning liquid into the first nozzle 32. The second fixing member 315 is spaced below the first fixing member 313. The two ends of the second connecting pipe 316 are respectively connected to the second fixing member 315 and the second nozzle 33. The second connecting pipe 316 is used to spray cleaning gas or cleaning liquid into the second nozzle 33.

[0057] Specifically, pumps are connected to both the first connecting pipe 314 and the second connecting pipe 316 to pump cleaning gas or cleaning liquid into either pipe. This allows the cleaning gas or cleaning liquid in the first connecting pipe 314 to be sprayed into the first nozzle 32, and the cleaning gas or cleaning liquid in the second connecting pipe 316 to be sprayed into the second nozzle 33. In this embodiment, the first nozzle 32 and the second nozzle 33 specifically spray cleaning gas to clean the first die-cutting blade 12 and the second die-cutting blade 22.

[0058] Specifically, after the die-cutting of the electrode sheet is completed, the first die-cutting blade 12 and the second die-cutting blade 22 disengage from each other along the Z-axis. At this time, the sensor 312 detects that the specific positions of the first die-cutting blade 12 and the second die-cutting blade 22 have changed, and then feeds the detection information back to the connecting rod 311, so that the connecting rod 311 drives the first nozzle 32 and the second nozzle 33 to rotate around the Z-axis to a suitable spraying position, so that the first nozzle 32 sprays and washes the first die-cutting blade 12, and the second nozzle 33 sprays and washes the second die-cutting blade 22.

[0059] Specifically, such as Figure 1 As shown, the connecting rod 311 is rotatably connected to the top of the first die-cutting assembly 11 via the rotating structure 319 around the Z-axis. The rotating structure 319 can specifically be a rotary cylinder; the first fixing member 313 and the second fixing member 315 can specifically be plate-shaped structures.

[0060] Furthermore, one end of the connecting rod 311 is detachably connected to the top of the first die-cutting assembly 11, which means that the entire cleaning mechanism 3 and the first die-cutting mechanism 1 are separate independent structures, and the second die-cutting mechanism 2 is also a separate independent structure relative to the first die-cutting mechanism 1. That is, the first die-cutting mechanism 1, the second die-cutting mechanism 2 and the cleaning mechanism 3 are independent separate structures, which makes the maintenance and replacement of the first die-cutting mechanism 1, the second die-cutting mechanism 2 and the cleaning mechanism 3 simpler and more convenient, and reduces the maintenance cost of the entire electrode die-cutting device.

[0061] Furthermore, such as Figure 1 As shown, the cleaning assembly also includes a first telescopic member 317 and a second telescopic member 318. The first telescopic member 317 is capable of extending and retracting vertically along the Z-axis, and its opposite ends are connected to a sensor 312 and a first fixing member 313, respectively, with the sensor 312 communicatively connected to the first telescopic member 317. The second telescopic member 318 is also capable of extending and retracting vertically along the Z-axis, and its opposite ends are connected to a first fixing member 313 and a second fixing member 315, respectively, with the sensor 312 communicatively connected to the second telescopic member 318. Specifically, the first telescopic member 317 and the second telescopic member 318 can be constructed as telescopic rods.

[0062] The first telescopic member 317 and the second telescopic member 318 can adjust the specific positions of the first nozzle 32 and the second nozzle 33 along the Z-axis, so that the first nozzle 32 can be adapted to various first die-cutting blades 12 at different heights on the Z-axis, and the second nozzle 33 can be adapted to various second die-cutting blades 22 at different heights on the Z-axis, thereby making the entire electrode die-cutting device highly applicable and versatile. Furthermore, through the telescopic adjustment of the first telescopic member 317 and the second telescopic member 318, it can be ensured that the first nozzle 32 and the second nozzle 33 move along the Z-axis to a suitable spraying position, thereby ensuring a better cleaning effect on the first die-cutting blades 12 and the second die-cutting blades 22.

[0063] Specifically, when sensor 312 detects a change in the position of the first die-cutting blade 12 and the second die-cutting blade 22, it simultaneously feeds back the detection information to the first telescopic member 317 and the second telescopic member 318, so that the first telescopic member 317 moves the first nozzle 32 along the Z-axis to a suitable spraying position, and the second telescopic member 318 moves the second nozzle 33 along the Z-axis to a suitable spraying position, thereby causing the first nozzle 32 to spray and clean the first die-cutting blade 12, and the second nozzle 33 to spray and clean the second die-cutting blade 22.

[0064] The first die-cutting mechanism 1 is described in detail below:

[0065] Specifically, such as Figure 1As shown, the first die-cutting assembly 11 includes a top plate 111 and a third telescopic member 112. The top plate 111 is fixedly mounted, and one end of the cleaning assembly is rotatably connected to the top of the top plate 111 about the Z-axis; that is, one end of the connecting rod 311 is rotatably connected to the top of the top plate 111 about the Z-axis. One end of the third telescopic member 112 is connected to the bottom of the top plate 111, and the other end of the third telescopic member 112 is connected to the first die-cutting blade 12. The third telescopic member 112 is used to drive the first die-cutting blade 12 to move up and down along the Z-axis to adjust the position of the first die-cutting blade 12 relative to the second die-cutting blade 22 on the Z-axis. Specifically, the third telescopic member 112 can be a linear cylinder.

[0066] The second die-cutting mechanism 2 is described in detail below:

[0067] Specifically, such as Figure 1 As shown, the second die-cutting assembly 21 includes a first support plate 211 and a fourth telescopic member 212. The first support plate 211 is fixedly disposed and positioned parallel to the bottom of the top plate 111. One end of the fourth telescopic member 212 is mounted on the first support plate 211, and the other end is connected to the second die-cutting blade 22. The fourth telescopic member 212 drives the second die-cutting blade 22 to move up and down along the Z-axis to adjust the position of the second die-cutting blade 22 relative to the first die-cutting blade 12 on the Z-axis. Specifically, the fourth telescopic member 212 can be a linear cylinder.

[0068] Furthermore, such as Figure 1 As shown, the second die-cutting assembly 21 also includes a second support plate 213, a push plate 214, and a fifth telescopic member 215. The second support plate 213 is parallel to and fixedly disposed below the first support plate 211. The push plate 214 is located above the second support plate 213, and can slide upwards along the Z-axis and is connected to the fourth telescopic member 212. The fifth telescopic member 215 passes through the second support plate 213 and is connected to the push plate 214. The fifth telescopic member 215 drives the push plate 214 to move up and down along the Z-axis, thereby driving the fourth telescopic member 212 and the second die-cutting blade 22 to move up and down along the Z-axis as a whole, thus further adjusting the position of the second die-cutting blade 22 relative to the first die-cutting blade 12 on the Z-axis. Specifically, the fifth telescopic member 215 can be a telescopic rod structure.

[0069] By setting up a fourth telescopic member 212 and a fifth telescopic member 215 that work together, the position of the second die-cutting blade 22 on the Z-axis can be adjusted twice. On the one hand, this increases the adjustment range of the second die-cutting blade 22 on the Z-axis, thereby better adapting to the position of the first die-cutting blade 12. On the other hand, it ensures a more accurate adjustment of the position of the second die-cutting blade 22 relative to the first die-cutting blade 12 on the Z-axis, thereby better ensuring the accurate matching position between the first die-cutting blade 12 and the second die-cutting blade 22, resulting in a better die-cutting effect on the electrode sheet.

[0070] Furthermore, such as Figure 1 As shown, one of the first die-cutting blade 12 and the second die-cutting blade 22 has a protrusion structure, and the other has a groove structure, thereby enabling the electrode sheet to be die-cut through the interlocking of the first die-cutting blade 12 and the second die-cutting blade 22. The die-cutting principle of the first die-cutting blade 12 and the second die-cutting blade 22 can be referred to the die-cutting principle of common die-cutting devices in the prior art, and will not be described in detail here. In this embodiment, the first die-cutting blade 12 has a groove structure, and the second die-cutting blade 22 has a protrusion structure.

[0071] The following is a detailed description of the overcutting prevention mechanism 4:

[0072] Furthermore, such as Figure 1 As shown, the electrode die-cutting device also includes an over-cutting mechanism 4. The over-cutting mechanism 4 is used to limit the cutting depth between the first die-cutting blade 12 and the second die-cutting blade 22, so that the depth of the concave-convex fit between the first die-cutting blade 12 and the second die-cutting blade 22 is more appropriate, so as to avoid mutual interference and wear between the first die-cutting blade 12 and the second die-cutting blade 22 due to excessive cutting depth, thereby better protecting the first die-cutting blade 12 and the second die-cutting blade 22.

[0073] Specifically, such as Figure 1 As shown, the anti-overcutting mechanism 4 includes a first limiting column 41 and a second limiting column 42. The first limiting column 41 extends along the Z-axis and is detachably connected to the bottom end of the top plate 111 of the first die-cutting assembly 11. The first limiting column 41 is located on one side of the first die-cutting blade 12. The second limiting column 42 extends along the Z-axis and is directly opposite the first limiting column 41. The second limiting column 42 is detachably connected to the top end of the first support plate 211 of the second die-cutting assembly 21. The second limiting column 42 is located on one side of the second die-cutting blade 22. The first limiting column 41 and the second limiting column 42 can abut against each other to limit the first die-cutting blade 12 and the second die-cutting blade 22 from continuing to approach each other, thereby achieving the purpose of limiting the cutting depth between the first die-cutting blade 12 and the second die-cutting blade 22.

[0074] By detachably connecting the first limiting column 41 to the bottom of the top plate 111 and detachably connecting the second limiting column 42 to the top of the first support plate 211, the overcutting mechanism 4, the first die-cutting mechanism 1 and the second die-cutting mechanism 2 are independent separate structures, which makes the maintenance and replacement of the overcutting mechanism 4, the first die-cutting mechanism 1 and the second die-cutting mechanism 2 simpler and more convenient, and further reduces the maintenance cost of the entire electrode die-cutting device.

[0075] Furthermore, such as Figure 1 As shown, there are two first limiting posts 41, which are respectively located on opposite sides of the first die-cutting blade 12; correspondingly, there are two second limiting posts 42, which are respectively located on opposite sides of the second die-cutting blade 22, with one first limiting post 41 and one second limiting post 42 facing each other, so that the abutment between the two first limiting posts 41 and the two second limiting posts 42 can more stably restrict the first die-cutting blade 12 and the second die-cutting blade 22 from continuing to approach each other.

[0076] The specific working process of the electrode die-cutting device in this embodiment is as follows:

[0077] First, the electrode to be die-cut is placed between the first die-cutting blade 12 and the second die-cutting blade 22. The third telescopic member 112 drives the first die-cutting blade 12 to move downward along the Z-axis toward the electrode. At the same time, the fourth telescopic member 212 and the fifth telescopic member 215 drive the second die-cutting blade 22 to move upward along the Z-axis toward the electrode, so that the first die-cutting blade 12 and the second die-cutting blade 22 come closer to each other to form a concave-convex die-cutting structure, thereby die-cutting the electrode into the required rectangular piece.

[0078] Then, after die-cutting is completed, the third telescopic member 112 drives the first die-cutting blade 12 to move upward along the Z-axis away from the electrode. At this time, the sensor 312 detects that the specific position of the first die-cutting blade 12 has changed, and feeds back the detection information to the connecting rod 311, the first telescopic member 317, and the second telescopic member 318. This causes the connecting rod 311 to drive the first nozzle 32 and the second nozzle 33 to rotate around the Z-axis, the first telescopic member 317 to drive the first nozzle 32 to move along the Z-axis, and the second telescopic member 318 to drive the second nozzle 33 to move along the Z-axis. This causes the first nozzle 32 to move to a suitable spraying position that matches the first die-cutting blade 12, and the second nozzle 33 to move to a suitable spraying position that matches the second die-cutting blade 22. This allows the first nozzle 32 to spray air to clean the first die-cutting blade 12, and the second nozzle 33 to spray air to clean the second die-cutting blade 22, thus completing the die-cutting and cleaning process of the electrode.

[0079] In this embodiment, the electrode die-cutting device adjusts the specific positions of the first nozzle 32 and the second nozzle 33 along the Z-axis via the first telescopic member 317 and the second telescopic member 318. This allows it to adapt to various first die-cutting blades 12 and 22 at different heights along the Z-axis, ensuring that the first nozzle 32 and the second nozzle 33 move accurately to the appropriate spraying position along the Z-axis. Simultaneously, the connecting rod 311 drives the first nozzle 32 and the second nozzle 33 to rotate around the Z-axis, ensuring that the first nozzle 32 and the second nozzle 33 rotate around the Z-axis to the appropriate spraying position and perform rotating and circling spraying. This ensures a good cleaning effect on foreign matter spilled from the first die-cutting blade 12 and the second die-cutting blade 22.

[0080] In this embodiment, the electrode die-cutting device uses a third telescopic member 112 to drive the first die-cutting blade 12 to move up and down along the Z-axis, a fourth telescopic member 212 to drive the second die-cutting blade 22 to move up and down along the Z-axis, and a fifth telescopic member 215 to drive the fourth telescopic member 212 and the second die-cutting blade 22 to move up and down along the Z-axis as a whole. This allows for adjustment of the relative position between the first die-cutting blade 12 and the second die-cutting blade 22, thereby ensuring accurate matching between the first die-cutting blade 12 and the second die-cutting blade 22, resulting in a better die-cutting effect on the electrode.

[0081] In this embodiment, the electrode die-cutting device is modularly designed by making the first die-cutting mechanism 1, the second die-cutting mechanism 2, the cleaning mechanism 3, and the anti-overcutting mechanism 4 independent separate structures. This makes the maintenance and replacement of each of the four components simpler and more convenient, reducing the maintenance cost of the entire electrode die-cutting device.

[0082] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pole piece die cutting device characterized by, The utility model relates to a kind of cutting mechanism, comprising: First die-cutting mechanism (1), comprising first die-cutting assembly (11) and first die-cutting knife (12) connected with it; Second die-cutting mechanism (2), comprising second die-cutting assembly (21) and second die-cutting knife (22) connected with it; The second die-cutting knife (22) is oppositely arranged below the first die-cutting knife (12), and the first die-cutting knife (12) and the second die-cutting knife (22) can approach or separate from each other along the Z-axis, and the first die-cutting knife (12) and the second die-cutting knife (22) are concave-convex matched to die-cut pole piece; Cleaning mechanism (3), comprising cleaning assembly and first spray head (32) and second spray head (33) connected with it, the first spray head (32) is used to spray wash the first die-cutting knife (12), and the second spray head (33) is used to spray wash the second die-cutting knife (22).

2. The pole piece die cutting apparatus of claim 1, wherein, One end of the cleaning assembly is rotatably connected to the first die-cutting assembly (11) around the Z-axis, the first spray head (32) and the second spray head (33) are respectively connected to the other end of the cleaning assembly, and when the first die-cutting knife (12) and the second die-cutting knife (22) separate from each other along the Z-axis, the first spray head (32) sprays and washes the first die-cutting knife (12), and the second spray head (33) sprays and washes the second die-cutting knife (22).

3. The pole piece die cutting apparatus of claim 2, wherein, The cleaning assembly comprises: Connecting rod (311), one end of which is rotatably connected to the top end of the first die-cutting assembly (11) around the Z-axis; Sensor (312), connected to the other end of the connecting rod (311), the sensor (312) is used to detect the position of the first die-cutting knife (12) and the second die-cutting knife (22), and the sensor (312) is communicatively connected to the connecting rod (311); First fixing part (313) and first connecting pipe (314), the first fixing part (313) is connected below the sensor (312), and the two ends of the first connecting pipe (314) are respectively connected to the first fixing part (313) and the first spray head (32), the first connecting pipe (314) is used to spray and wash gas or spray and wash liquid into the first spray head (32); Second fixing part (315) and second connecting pipe (316), the second fixing part (315) is connected below the first fixing part (313) with a spacing, and the two ends of the second connecting pipe (316) are respectively connected to the second fixing part (315) and the second spray head (33), the second connecting pipe (316) is used to spray and wash gas or spray and wash liquid into the second spray head (33).

4. The pole piece die cutting apparatus of claim 3, wherein, One end of the connecting rod (311) can be detachably connected to the top end of the first die-cutting assembly (11).

5. The pole piece die cutting apparatus of claim 3 wherein, The cleaning assembly further comprises: First telescopic part (317), which can be telescoped up and down along the Z-axis, the first telescopic part (317) is connected between the sensor (312) and the first fixing part (313), and the sensor (312) is communicatively connected to the first telescopic part (317); A second telescopic member (318) is arranged between the first fixed member (313) and the second fixed member (315) and is capable of telescoping up and down along the Z-axis, and the sensor (312) is in communication connection with the second telescopic member (318).

6. The pole piece die cutting apparatus of any one of claims 2-5, wherein, The first die-cutting assembly (11) comprises: A top plate (111) is fixedly arranged, and one end of the cleaning assembly is rotatably connected to the top end of the top plate (111) about the Z-axis; A third telescopic member (112) is connected at one end to the bottom end of the top plate (111) and at the other end to the first die-cutting knife (12), and the third telescopic member (112) is used to drive the first die-cutting knife (12) to move up and down along the Z-axis.

7. The pole piece die cutting apparatus of any one of claims 1-5, wherein, The second die-cutting assembly (21) comprises: A first support plate (211) is fixedly arranged; A fourth telescopic member (212) is arranged at one end on the first support plate (211) and at the other end to the second die-cutting knife (22), and the fourth telescopic member (212) is used to drive the second die-cutting knife (22) to move up and down along the Z-axis.

8. The pole piece die cutting apparatus of claim 7 wherein, The second die-cutting assembly (21) further comprises: A second support plate (213) is arranged in parallel and fixedly below the first support plate (211); A push plate (214) is arranged above the second support plate (213) and is capable of sliding upward along the Z-axis and is connected to the fourth telescopic member (212); A fifth telescopic member (215) penetrates through the second support plate (213) and is connected to the push plate (214), and the fifth telescopic member (215) is used to drive the push plate (214) to move up and down along the Z-axis.

9. The pole piece die cutting apparatus of any one of claims 1-5, wherein, One of the first die-cutting knife (12) and the second die-cutting knife (22) is in a protruding block structure, and the other is in a recessed groove structure.

10. The pole piece die cutting apparatus of any one of claims 1-5, wherein, The pole piece die-cutting device further comprises an over-cut prevention mechanism (4) for limiting the cutting depth between the first die-cutting knife (12) and the second die-cutting knife (22); the over-cut prevention mechanism (4) comprises: A first limiting column (41) extends along the Z-axis and is detachably connected to the first die-cutting assembly (11), and the first limiting column (41) is located on one side of the first die-cutting knife (12); A second limiting column (42) extends along the Z-axis and is arranged opposite to the first limiting column (41), and the second limiting column (42) is detachably connected to the second die-cutting assembly (21), and the second limiting column (42) is located on one side of the second die-cutting knife (22), and the first limiting column (41) and the second limiting column (42) can abut against each other.

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