Slicing device

Abstract

The utility model discloses a kind of cutting device, belong to pole piece manufacturing technical field, the cutting device is suitable for cutting pole piece, cutting device includes: front cutting knife mechanism and rear cutting knife mechanism, front cutting knife mechanism includes: first front tool group, second front tool group and front adjusting assembly, front adjusting assembly is used to adjust the position of first front tool group and / or second front tool group, to selectively cut pole piece, rear cutting knife mechanism includes: first rear tool group and second rear tool group, first rear tool group and second rear tool group are suitable for keeping in the position of continuously cutting pole piece.Cutting device according to the utility model embodiment, front cutting knife mechanism selectively shears pole piece, and the amount of feed of front cutting knife mechanism can be adjusted by front adjusting assembly, so that front cutting knife mechanism cuts the area of pole piece with adhesive tape, avoid pole piece in the area with adhesive tape is not cut off, prevent pole piece break.

Description

Technical Field

[0001] This utility model relates to the field of electrode manufacturing technology, and more specifically, to a cutting device. Background Technology

[0002] In related technologies, wide electrode sheets need to be cut into multiple narrow electrode sheets. The commonly used technology is to roll-cut the electrode sheets with two cutters, one above the other. The depth of cut and the distance between the cutters are related to the thickness of the electrode sheet. However, the incoming electrode sheets are often covered with tape, which can cause changes in the thickness of the electrode sheet. This can lead to the electrode sheet not being able to be cut at the tape, and the electrode sheet is prone to breakage. Utility Model Content

[0003] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a cutting device that prevents the electrode from being left uncut in areas covered with adhesive tape, thus preventing electrode breakage.

[0004] According to an embodiment of the present invention, a cutting device is adapted to cut electrode sheets. The cutting device includes a front cutting mechanism and a rear cutting mechanism, wherein the electrode sheet passes sequentially through the front cutting mechanism and the rear cutting mechanism along its length direction. The front cutting mechanism includes a first front cutting blade group, a second front cutting blade group, and a front adjustment component. In the thickness direction of the electrode sheet, the first front cutting blade group and the second front cutting blade group are arranged opposite to each other. The front adjustment component is used to adjust the position of the first front cutting blade group and / or the second front cutting blade group to selectively cut the electrode sheet. The rear cutting mechanism includes a first rear cutting blade group and a second rear cutting blade group. In the thickness direction of the electrode sheet, the first rear cutting blade group and the second rear cutting blade group are arranged opposite to each other. The first rear cutting blade group and the second rear cutting blade group are adapted to remain in a position that continuously cuts the electrode sheet.

[0005] According to the cutting device of this utility model embodiment, the front cutting mechanism can selectively cut the electrode sheet, and the cutting depth of the front cutting mechanism can be adjusted by the front adjustment component so that the front cutting mechanism can cut the area of ​​the electrode sheet with tape, avoid the electrode sheet not being cut in the area with tape, and prevent the electrode sheet from breaking.

[0006] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the electrode sheet according to an embodiment of the present utility model; Figure 2 yes Figure 1 Cross-sectional view at point AA; Figure 3 This is a schematic diagram of the electrode sheet and slitting device according to an embodiment of the present utility model; Figure 4 When the electrode passes through the area where the tape is not applied, it is when the electrode passes through the front cutting mechanism. Figure 3 Sectional view at BB; Figure 5 When the electrode tape is applied in the area where the front cutting mechanism passes through, it is during this process. Figure 3 Sectional view at BB; Figure 6 yes Figure 5 Enlarged view at point I; Figure 7 yes Figure 3 Enlarged view at CC; Figure 8 yes Figure 7 Enlarged view at point II.

[0008] Figure label: Front cutting mechanism 1; First front blade assembly 11; First front driver 111; First front spindle 112; First front cutter 113; First front support 114; First front bearing seat 1141; First front bearing 1142; First front coupling 115; First front spacer 116; Second front blade assembly 12; Second front driver 121; Second front spindle 122; Second front cutter 123; Second front support 124; Second front bearing seat 1241; Second front bearing 1242; Second front coupling 125; Second front spacer 126; Front adjusting assembly 13; Telescopic cylinder 131; Rear cutter mechanism 2; First rear cutter assembly 21; First rear driver 211; First rear spindle 212; First rear cutter 213; First rear support 214; First rear bearing seat 2141; First rear bearing 2142; First rear coupling 215; First rear spacer 216; Second rear cutter assembly 22; Second rear driver 221; Second rear spindle 222; Second rear cutter 223; Second rear support 224; Second rear bearing seat 2241; Second rear bearing 2242; Second rear coupling 225; Second rear spacer 226; Sensor 3; Slitting device 10; Electrode 20; Adhesive tape 201. Detailed Implementation

[0009] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0010] In the description of this utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0011] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0012] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0013] The cutting device 10 according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0014] Reference Figures 1-8 As shown, the slitting device 10 is adapted to slit electrode sheets 20. The slitting device 10 includes a front cutting mechanism 1 and a rear cutting mechanism 2. The electrode sheet 20 passes sequentially through the front cutting mechanism 1 and the rear cutting mechanism 2 along its length direction. The front cutting mechanism 1 includes a first front blade group 11, a second front blade group 12, and a front adjustment component 13. In the thickness direction of the electrode sheet 20, the first front blade group 11 and the second front blade group 12 are arranged opposite to each other. The front adjustment component 13 is used to adjust the position of the first front blade group 11 and / or the second front blade group 12 to selectively slit the electrode sheet 20. The rear cutting mechanism 2 includes a first rear blade group 21 and a second rear blade group 22. In the thickness direction of the electrode sheet 20, the first rear blade group 21 and the second rear blade group 22 are arranged opposite to each other. The first rear blade group 21 and the second rear blade group 22 are adapted to be held in a position that continuously slits the electrode sheet 20.

[0015] Among them, Figures 1-8In the figure, the length direction of the electrode 20 is the front-to-back direction, which is also the direction of the electrode 20's belt travel; the width direction of the electrode 20 is the left-to-right direction; and the thickness direction of the electrode 20 is the up-to-down direction.

[0016] The electrode 20 can pass sequentially from back to front through the front cutting mechanism 1 and the rear cutting mechanism 2. The front cutting mechanism 1 can selectively cut the electrode 20, and when the front cutting mechanism 1 cuts the electrode 20, the cutting depth T2 of the front cutting mechanism 1 can be adjusted by the front adjustment component 13 so that the front cutting mechanism 1 can cut the area of ​​the electrode 20 with the adhesive tape 201, avoiding the electrode 20 not being cut in the area with the adhesive tape 201, and preventing the electrode 20 from breaking. When the front cutting mechanism 1 is not cutting the electrode 20, the rear cutting mechanism 2 can continuously cut the area of ​​the electrode 20 without the adhesive tape 201 to ensure the stability and reliability of the cut electrode 20.

[0017] Specifically, at least one of the first front blade assembly 11 and the second front blade assembly 12 can be adjusted in the vertical direction by the front adjustment component 13, referring to... Figure 4 , Figure 7 and Figure 8 As shown, when the area of ​​the electrode 20 without adhesive tape 201 passes through the front cutting mechanism 1, the front adjusting component 13 can separate the first front blade group 11 and the second front blade group 12 in the vertical direction. The front cutting mechanism 1 does not cut the electrode 20, and the electrode 20 is cut by the rear cutting mechanism 2. That is, the positions of the first rear blade group 21 and the second rear blade group 22 remain unchanged, and the cutting depth Tc of the rear cutting mechanism 2 is constant, so as to perform stable and reliable cutting in the area where the thickness of the electrode 20 does not change much (i.e., the area without adhesive tape 201). Moreover, the wear of the first rear blade group 21 and the second rear blade group 22 is small, and the service life is long.

[0018] Reference Figure 5 and Figure 6 As shown, when the area of ​​the electrode 20 with tape 201 passes through the front cutting mechanism 1, the front adjusting component 13 adjusts the position of the first front blade group 11 and / or the second front blade group 12 in the vertical direction, so that the first front blade group 11 and the second front blade group 12 bite together in the vertical direction and form a larger cutting depth T2, so as to thoroughly cut the area of ​​the electrode 20 with tape 201, avoid the electrode 20 not being cut at the point where tape 201 is applied, and prevent the electrode 20 from breaking.

[0019] It should be noted that the adjustment of the position of the first front blade group 11 and the second front blade group 12 in the vertical direction by the front adjustment component 13 can be automatically controlled by the controller of the front adjustment component 13 or manually controlled. When the front cutting mechanism 1 cuts the electrode 20, the cutting depth T2 of the front cutting mechanism 1 can be greater than the cutting depth Tc of the rear cutting mechanism 2, so that the front cutting mechanism 1 can more reliably and completely cut off the area of ​​the electrode 20 with the adhesive tape 201.

[0020] In addition, the cutting positions of the front cutting mechanism 1 and the rear cutting mechanism 2 for the electrode 20 are the same in the left and right directions, that is, the electrode 20 is cut along the same cutting line L. Since two cutting mechanisms, the front cutting mechanism 1 and the rear cutting mechanism 2, are set up, when the cutting depth T2 of the front cutting mechanism 1 is changed or there is a missed cut, the rear cutting mechanism 2 can cut the electrode 20 behind the front cutting mechanism 1 to avoid poor cutting of the electrode 20.

[0021] In some embodiments of this utility model, reference is made to Figures 4-6 As shown, the first front blade assembly 11 includes: a first front driver 111, a first front spindle 112, a first front cutter 113, and a first front support 114. The first front driver 111 is drively connected to the first front spindle 112. The first front cutter 113 is sleeved and fixed to the first front spindle 112. The first front spindle 112 is rotatably mounted on the first front support 114. The front adjustment assembly 13 includes: a telescopic cylinder 131. The telescopic cylinder 131 is connected to the first front support 114. In the thickness direction of the electrode sheet 20, the telescopic cylinder 131 adjusts the position of the first front blade assembly 11 by extending or retracting its length.

[0022] Specifically, the first front driver 111 can be a motor or an engine. The first front driver 111 can be connected to the first front spindle 112 via the first front coupling 115. The first front driver 111 can drive the first front spindle 112 to rotate around its axis. The first front cutter 113 is sleeved and fixed to the first front spindle 112. The first front cutter 113 can rotate synchronously with the first front spindle 112 to cut the electrode 20. The first front bracket 114 can be provided with multiple first front bearing seats 1141. The first front spindle 112 passes through each first front bearing seat 1141 and is rotatably connected to the first front bearing seat 1141 via the corresponding first front bearing 1142. The structure of the first front cutter group 11 is simple and reliable.

[0023] The telescopic cylinder 131 of the front adjustment assembly 13 can be a pneumatic telescopic cylinder or a hydraulic telescopic cylinder. The telescopic cylinder 131 is connected to the first front support 114. When the telescopic cylinder 131 extends or retracts in the vertical direction, it can drive the first front support 114 to move in the vertical direction, thereby adjusting the position of the first front blade assembly 11 in the vertical direction.

[0024] For example, the telescopic cylinder 131 is connected above the first front bracket 114. When the telescopic cylinder 131 retracts, the first front blade assembly 11 moves upward above the electrode 20, and the front cutting mechanism 1 does not cut the electrode 20. When the telescopic cylinder 131 extends, the first front blade assembly 11 moves downward, and the first front blade assembly 11 can cut into the electrode 20 in the area where the adhesive tape 201 is attached, so as to cut the electrode 20. The extension of the telescopic cylinder 131 can be adjusted to realize the adjustment of the cutting depth T2 of the front cutting mechanism 1.

[0025] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 As shown, the second front blade assembly 12 includes: a second front driver 121, a second front spindle 122, a second front cutter 123, and a second front support 124. The second front driver 121 is connected to the second front spindle 122 in a transmission manner. The second front cutter 123 is sleeved and fixed on the second front spindle 122. The second front spindle 122 is rotatably inserted through the second front support 124.

[0026] Specifically, the second front driver 121 can be a motor or an engine. The second front driver 121 can be connected to the second front spindle 122 via the second front coupling 125. The second front driver 121 can drive the second front spindle 122 to rotate around its axis. The second front cutter 123 is sleeved and fixed to the second front spindle 122. The second front cutter 123 can rotate synchronously with the second front spindle 122 to cut the electrode 20. The second front bracket 124 can be provided with multiple second front bearing seats 1241. The second front spindle 122 passes through each second front bearing seat 1241 and is rotatably connected to the second front bearing seat 1241 via the corresponding second front bearing 1242. The structure of the second front cutter group 12 is simple and reliable.

[0027] In some other embodiments of the present invention (not shown in the figures), the front adjustment component 13 may be connected to the second front support 124 to drive the second front blade assembly 12 to move up and down, or the front adjustment component 13 may be connected between the first front support 114 and the second front support 124 to drive the first front blade assembly 11 and the second front blade assembly 12 to move closer or further apart in the vertical direction.

[0028] It should be noted that the front adjustment assembly 13 can be fixed to the ground or the frame. The front adjustment assembly 13 may include multiple telescopic cylinders 131. The front adjustment assembly 13 may also be constructed as a ball screw, mechanical lifting machine or other structures.

[0029] In some embodiments of this utility model, reference is made to Figure 5 and Figure 6 As shown, the first front cutter 113 is a single-edged cutter, and the second front cutter 123 is a double-edged cutter. In the width direction of the electrode 20, the blade of the first front cutter 113 is located between the two blades of the second front cutter 123. The electrode 20 is thicker in the area where the tape 201 is applied. The blade of the first front cutter 113 can cut a larger amount T2 between the two blades of the second front cutter 123 to stably cut the electrode 20, thereby improving the reliability of the front cutter mechanism 1 in cutting the area of ​​the electrode 20 with the tape 201 and preventing the electrode 20 from breaking.

[0030] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5As shown, the first front cutter group 11 further includes: a plurality of first front spacers 116, in the axial direction of the first front spindle 112, both sides of the first front cutter 113 are connected to the first front spindle 112 through at least one first front spacer 116. The second front cutter group 12 further includes: a plurality of second front spacers 126, in the axial direction of the second front spindle 122, both sides of the second front cutter 123 are connected to the second front spindle 122 through at least one second front spacer 126.

[0031] Specifically, the axial direction of the first front spindle 112 and the axial direction of the second front spindle 122 are both parallel to the width direction of the electrode 20. The left and right sides of the first front cutter 113 are clamped by the first front spacer 116. The first front cutter 113 can be fixedly connected to the first front spindle 112 through the first front spacer 116. By increasing or decreasing the number of first front spacers 116 on each side, the position of the first front cutter 113 in the axial (left and right) direction of the first front spindle 112 can be adjusted. The second front cutter 123 is held by the second front spacer 126 on both sides. The second front cutter 123 can be fixedly connected to the second front spindle 122 through the second front spacer 126. By increasing or decreasing the number of second front spacers 126 on each side, the position of the second front cutter 123 in the axial direction (left and right direction) of the second front spindle 122 can be adjusted. Thus, by adjusting the position of the first front cutter 113 and the second front cutter 123 in the left and right direction, the cutting position of the front cutter mechanism 1 on the electrode 20 in the left and right direction can be adjusted, thereby improving the versatility of the cutting device 10.

[0032] In addition, by adjusting the positions of the first front cutter 113 and the second front cutter 123 in the left and right directions, the cutting amount of the front cutter mechanism 1 can be adjusted. By increasing the cutting amount, the electrode 20 can be reliably cut in the area where the tape 201 is attached.

[0033] It should be noted that the front cutting mechanism 1 is mainly used to cut the area of ​​the electrode 20 with tape 201, while the rear cutting mechanism 2 is mainly used to cut the area of ​​the electrode 20 without tape 201. In other words, the front cutting mechanism 1 cuts the thicker areas of the electrode 20, and the rear cutting mechanism 2 cuts the thinner areas of the electrode 20. To ensure that the front cutting mechanism 1 can reliably cut the electrode 20, the cutting depth T2 of the front cutting mechanism 1 can be adjusted to be greater than the cutting depth Tc of the rear cutting mechanism 2 by adjusting the number of the first front spacer 116 and the second front spacer 126. The cutting depth Tk of the front cutting mechanism 1 can be adjusted to be greater than the cutting depth Tk of the rear cutting mechanism 2 by adjusting the number of the first front spacer 116 and the second front spacer 126.

[0034] In some embodiments of this utility model, reference is made to Figure 7As shown, the first rear blade assembly 21 includes: a first rear driver 211, a first rear spindle 212, a first rear cutter 213, and a first rear support 214. The first rear driver 211 is connected to the first rear spindle 212 in a transmission manner. The first rear cutter 213 is sleeved and fixed on the first rear spindle 212. The first rear spindle 212 is rotatably inserted through the first rear support 214.

[0035] Specifically, the first rear drive 211 can be a motor or an engine. The first rear drive 211 can be connected to the first rear spindle 212 via the first rear coupling 215. The first rear drive 211 can drive the first rear spindle 212 to rotate around its axis. The first rear cutter 213 is sleeved and fixed on the first rear spindle 212. The first rear cutter 213 can rotate synchronously with the first rear spindle 212 to cut the electrode 20. The first rear support 214 can be provided with multiple first rear bearing seats 2141. The first rear spindle 212 passes through each first rear bearing seat 2141 and is rotatably connected to the first rear bearing seat 2141 via the corresponding first rear bearing 2142. The structure of the first rear cutter group 21 is simple and reliable.

[0036] In some embodiments of this utility model, reference is made to Figure 7 As shown, the second rear blade assembly 22 includes: a second rear driver 221, a second rear spindle 222, a second rear cutter 223, and a second rear support 224. The second rear driver 221 is connected to the second rear spindle 222 in a transmission manner. The second rear cutter 223 is sleeved and fixed on the second rear spindle 222. The second rear spindle 222 is rotatably inserted through the second rear support 224.

[0037] Specifically, the second rear drive 221 can be a motor or an engine. The second rear drive 221 can be connected to the second rear spindle 222 via the second rear coupling 225. The second rear drive 221 can drive the second rear spindle 222 to rotate around its axis. The second rear cutter 223 is sleeved and fixed to the second rear spindle 222. The second rear cutter 223 can rotate synchronously with the second rear spindle 222 to cut the electrode 20. The second rear support 224 can be provided with multiple second rear bearing seats 2241. The second rear spindle 222 passes through each second rear bearing seat 2241 and is rotatably connected to the second rear bearing seat 2241 via the corresponding second rear bearing 2242. The structure of the second rear cutter group 22 is simple and reliable.

[0038] In some embodiments of this utility model, reference is made to Figure 7 and Figure 8As shown, both the first rear cutter 213 and the second rear cutter 223 are single-edged cutters. The electrode sheet 20 is thinner in the area where the adhesive tape 201 is not applied. The blade of the first rear cutter 213 can cooperate with the blade of the second rear cutter 223 with a smaller cutting depth Tc and cutting distance Tk, so as to reduce the wear of the first rear cutter 213 and the second rear cutter 223, improve the service life of the first rear cutter 213 and the second rear cutter 223, and reduce the use and maintenance cost of the cutting device 10.

[0039] In some embodiments of this utility model, reference is made to Figure 7 As shown, the first rear cutter group 21 further includes: a plurality of first rear spacers 216, in the axial direction of the first rear spindle 212, both sides of the first rear cutter 213 are connected to the first rear spindle 212 through at least one first rear spacer 216. The second rear cutter group 22 further includes: a plurality of second rear spacers 226, in the axial direction of the second rear spindle 222, both sides of the second rear cutter 223 are connected to the first rear spindle 212 through at least one second rear spacer 226.

[0040] Specifically, the axial direction of the first rear spindle 212 and the axial direction of the second rear spindle 222 are both parallel to the width direction of the electrode 20. The left and right sides of the first rear cutter 213 are clamped by the first rear spacer 216. The first rear cutter 213 can be fixedly connected to the first rear spindle 212 through the first rear spacer 216. By increasing or decreasing the number of first rear spacers 216 on each side, the position of the first rear cutter 213 in the axial (left and right) direction of the first rear spindle 212 can be adjusted. The second rear cutter 223 is held by the second rear spacer 226 on both sides. The second rear cutter 223 can be fixedly connected to the second rear spindle 222 through the second rear spacer 226. By increasing or decreasing the number of second rear spacers 226 on each side, the position of the second rear cutter 223 in the axial direction (left and right direction) of the second rear spindle 222 can be adjusted. Thus, by adjusting the position of the first rear cutter 213 and the second rear cutter 223 in the left and right direction, the cutting position of the electrode 20 of the rear cutter mechanism 2 in the left and right direction can be adjusted to improve the versatility of the cutting device 10.

[0041] In addition, by adjusting the positions of the first rear cutter 213 and the second rear cutter 223 in the left and right directions, the blade contact amount Tk of the rear cutter mechanism 2 can be adjusted to reduce the wear of the first rear cutter 213 and the second rear cutter 223, increase the service life of the first rear cutter 213 and the second rear cutter 223, and reduce the use and maintenance cost of the cutting device 10.

[0042] In some embodiments of this utility model, reference is made to Figure 3As shown, the cutting device 10 also includes a sensor 3, which is communicatively connected to the front adjustment assembly 13. In the length direction of the electrode 20, the front cutting mechanism 1 is located between the sensor 3 and the rear cutting mechanism 2. The sensor 3 is used to detect whether the electrode 20 is covered with tape 201. When the electrode 20 is covered with tape 201, the front adjustment assembly 13 adjusts the first front blade group 11 and the second front blade group 12 to cut the area of ​​the electrode 20 covered with tape 201. When the electrode 20 is not covered with tape 201, the front adjustment assembly 13 adjusts the first front blade group 11 and the second front blade group 12 to not cut the electrode 20.

[0043] Specifically, sensor 3 can be a vision sensor. The vision sensor can determine whether the electrode 20 has tape 201 attached by recognizing the color or shape of tape 201. When the area of ​​the electrode 20 with tape 201 attached passes through the vision sensor, the vision sensor can identify that the electrode 20 has tape 201 attached.

[0044] Sensor 3 can also be a distance sensor. The distance sensor can detect its distance from the electrode 20 in real time. When the area of ​​the electrode 20 with tape 201 is past the distance sensor, the distance sensor can identify that the electrode 20 has tape 201 because the thickness of the electrode 20 increases and the distance between it and the electrode 20 decreases.

[0045] Along the length of the electrode 20, the front cutting mechanism 1 is located between the sensor 3 and the rear cutting mechanism 2. That is, the sensor 3 is located in front of the front cutting mechanism 1 to detect whether the electrode 20 is covered with tape 201 before the electrode 20 passes through the front cutting mechanism 1.

[0046] The front adjustment assembly 13 may have a controller, which is communicatively connected to the sensor 3. When the sensor 3 detects that the electrode 20 is covered with tape 201, the controller receives a first signal from the sensor 3. The controller can process the first signal through its internal logic circuit, and when the area of ​​the electrode 20 covered with tape 201 passes through the front cutting mechanism 1, it controls the telescopic cylinder 131 to extend, so that the first front blade group 11 and the second front blade group 12 cut the area of ​​the electrode 20 covered with tape 201. When the sensor 3 detects that the electrode 20 is not covered with tape 201, the controller receives a second signal from the sensor 3. The controller can process the second signal through its internal logic circuit, and when the area of ​​the electrode 20 not covered with tape 201 passes through the front cutting mechanism 1, it controls the telescopic cylinder 131 to shorten or remain shortened, so that the first front blade group 11 and the second front blade group 12 do not cut the electrode 20, reducing the wear of the front cutting mechanism 1 and reducing the low-precision cutting of the electrode 20 by the front cutting mechanism 1, preventing burrs from forming on the electrode 20.

[0047] Understandably, since the electrode 20 only needs to be cut together with the tape 201 in the area where the tape 201 is attached, there are no appearance requirements for the cutting of the electrode 20. Therefore, there are no strict requirements for the cutting depth T2 and the cutting distance of the front cutting mechanism 1. The first front cutting group 11 and / or the second front cutting group 12 adopting a suspended movable structure can meet the cutting accuracy requirements. In the area of ​​the electrode 20 where the tape 201 is not attached, the electrode 20 can be cut by the more stable and fixed-position rear cutting mechanism 2. The cutting depth Tc and the cutting distance Tk of the rear cutting mechanism 2 do not change during cutting, and the stability and consistency are good. The thickness of the electrode 20 in the area where the tape 201 is not attached does not change much. The rear cutting mechanism 2 can avoid low-quality appearance problems such as burrs when cutting the electrode 20 in the area where the tape 201 is not attached.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cutting device, characterized in that, The cutting device is adapted to cut the electrode sheet (20), and the cutting device includes: a front cutting mechanism (1) and a rear cutting mechanism (2), and the electrode sheet (20) passes through the front cutting mechanism (1) and the rear cutting mechanism (2) in sequence along its length direction; The front cutting mechanism (1) includes: a first front blade group (11), a second front blade group (12) and a front adjustment component (13). In the thickness direction of the electrode (20), the first front blade group (11) and the second front blade group (12) are arranged opposite to each other. The front adjustment component (13) is used to adjust the position of the first front blade group (11) and / or the second front blade group (12) to selectively cut the electrode (20). The rear cutting mechanism (2) includes a first rear cutting blade group (21) and a second rear cutting blade group (22). In the thickness direction of the electrode sheet (20), the first rear cutting blade group (21) and the second rear cutting blade group (22) are arranged opposite to each other. The first rear cutting blade group (21) and the second rear cutting blade group (22) are adapted to be held in a position that continuously cuts the electrode sheet (20).

2. The slitting device according to claim 1, characterized in that, The first front blade assembly (11) includes: a first front driver (111), a first front spindle (112), a first front cutter (113), and a first front bracket (114). The first front driver (111) is connected to the first front spindle (112) in a transmission connection. The first front cutter (113) is sleeved and fixed on the first front spindle (112). The first front spindle (112) is rotatably inserted through the first front bracket (114). The front adjustment assembly (13) includes a telescopic cylinder (131), which is connected to the first front support (114). In the thickness direction of the electrode (20), the telescopic cylinder (131) adjusts the position of the first front blade assembly (11) by extending or retracting its length.

3. The slitting device according to claim 2, characterized in that, The second front blade assembly (12) includes: a second front driver (121), a second front spindle (122), a second front cutter (123), and a second front bracket (124). The second front driver (121) is connected to the second front spindle (122) in a driving connection. The second front cutter (123) is sleeved and fixed on the second front spindle (122). The second front spindle (122) is rotatably inserted through the second front bracket (124).

4. The slitting device according to claim 3, characterized in that, The first front cutter (113) is a single-edged cutter, and the second front cutter (123) is a double-edged cutter. In the width direction of the electrode (20), the cutting edge of the first front cutter (113) is located between the two cutting edges of the second front cutter (123).

5. The slitting device according to claim 3, characterized in that, The first front blade assembly (11) further includes: a plurality of first front spacers (116), and in the axial direction of the first front spindle (112), both sides of the first front cutter (113) are connected to the first front spindle (112) through at least one first front spacer (116). The second front blade assembly (12) further includes: a plurality of second front spacers (126), and in the axial direction of the second front spindle (122), both sides of the second front cutter (123) are connected to the second front spindle (122) through at least one second front spacer (126).

6. The slitting device according to claim 1, characterized in that, The first rear blade assembly (21) includes: a first rear driver (211), a first rear spindle (212), a first rear cutter (213), and a first rear support (214). The first rear driver (211) is connected to the first rear spindle (212) in a transmission connection. The first rear cutter (213) is sleeved and fixed on the first rear spindle (212). The first rear spindle (212) is rotatably inserted through the first rear support (214).

7. The slitting device according to claim 6, characterized in that, The second rear blade assembly (22) includes: a second rear driver (221), a second rear spindle (222), a second rear cutter (223), and a second rear support (224). The second rear driver (221) is connected to the second rear spindle (222) in a transmission connection. The second rear cutter (223) is sleeved and fixed on the second rear spindle (222). The second rear spindle (222) is rotatably inserted through the second rear support (224).

8. The slitting device according to claim 7, characterized in that, Both the first rear cutter (213) and the second rear cutter (223) are single-edged cutters.

9. The slitting device according to claim 7, characterized in that, The first rear cutter group (21) further includes: a plurality of first rear spacers (216), and in the axial direction of the first rear spindle (212), both sides of the first rear cutter (213) are connected to the first rear spindle (212) through at least one first rear spacer (216); The second rear cutter group (22) further includes: a plurality of second rear spacers (226), and in the axial direction of the second rear spindle (222), both sides of the second rear cutter (223) are connected to the first rear spindle (212) through at least one second rear spacer (226).

10. The slitting device according to any one of claims 1-9, characterized in that, The cutting device further includes a sensor (3), which is communicatively connected to the front adjustment assembly (13). In the length direction of the electrode (20), the front cutting mechanism (1) is located between the sensor (3) and the rear cutting mechanism (2). The sensor (3) is used to detect whether the electrode (20) is covered with tape (201). When the electrode (20) is covered with tape (201), the front adjustment component (13) adjusts the first front blade group (11) and the second front blade group (12) to cut the area of ​​the electrode (20) covered with tape (201). When the electrode (20) is not covered with tape (201), the front adjustment component (13) adjusts the first front blade group (11) and the second front blade group (12) to not cut the electrode (20).

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