Deviation correction method, deviation correction mechanism, deviation correction device and slitting equipment

Abstract

The invention discloses a deviation rectifying method, a deviation rectifying mechanism, a deviation rectifying device and slitting equipment. The deviation rectifying method comprises the steps that S1, one edge in the width direction of a target material belt serves as a reference side, and deviation rectifying is conducted on the reference side; s2, the offset of the cutting track of the target material belt is obtained; and S3, according to the offset, a driving assembly is controlled to drive a pressing roller to downwards press the target material belt by a first preset size, and the target material belt is shrunk by a second preset size in the width direction. According to the technical scheme provided by the invention, the slitting efficiency can be improved, the dimensional tolerance of the slit sub-strips can be reduced, and the quality of the sub-strips can be improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery pole piece processing, and particularly relates to a deviation rectifying method, a deviation rectifying mechanism, a deviation rectifying device and a slitting device. BACKGROUND

[0002] In the manufacturing process of a lithium ion battery, a pole piece material belt slitting process is to slit a wide pole piece material belt into a plurality of sub-material belts with a coating pole piece area and a non-coating lug area through a slitting device. However, in order to improve production efficiency, the slitting device generally adopts a multi-knife synchronous cutting technology, that is, a plurality of cutting tracks are formed at the same time in one belt walking process, and the wide pole piece material belt is cut into a plurality of sub-material belts at one time.

[0003] However, in the actual production process, due to various factors, the pole piece material belt will inevitably produce overall deviation in the belt walking process, which will cause the width inconsistency of the sub-material belt after slitting. At present, the commonly used deviation rectifying method can only rectify the overall pole piece material belt, and in the synchronous slitting process of the plurality of cutting tracks, due to the problems such as local tension unevenness, micro-thickness difference or material anisotropy of the pole piece material belt area corresponding to each cutting track, different cutting tracks will produce different degrees of local deviation in the belt walking process, and the current overall deviation rectifying method of the pole piece material belt cannot solve the problem. SUMMARY

[0004] An object of the embodiments of the present application is to provide a deviation rectifying method, a deviation rectifying mechanism, a deviation rectifying device and a slitting device.

[0005] According to a first aspect of the embodiments of the present application, a deviation rectifying method is provided, comprising:

[0006] S1. Taking one edge of a target material belt in a width direction as a reference side, rectifying the reference side;

[0007] S2. Obtaining a deviation amount of a cutting track of the target material belt;

[0008] S3. According to the deviation amount of the cutting track, controlling a driving assembly to drive a compression roller to press down the target material belt by a first preset size, and the target material belt is contracted by a second preset size in the width direction.

[0009] Optionally, the second preset size is 2 times the deviation amount of the cutting track.

[0010] Optionally, the ratio of the first preset size to the second preset size is 15:1.

[0011] Optionally, the target material tape comprises a plurality of first regions and second regions arranged in sequence along the width direction, the cutting track located in the first region is a first cutting track, the cutting track located in the second region is a second cutting track, and the compression roller corresponds to the first region and / or the second region.

[0012] Optionally, between the S1 step and the S2 step, the deviation correction method further comprises:

[0013] S01, cutting the target material tape at the first cutting track and the second cutting track to obtain a plurality of sub-material tapes after cutting;

[0014] S02, detecting the sub-material tape to obtain the offset of the first cutting track and the offset of the second cutting track of the target material tape.

[0015] Optionally, the axial length of the compression roller is equal to or less than the width of the corresponding first region or second region.

[0016] According to a second aspect of the embodiment of the present application, a material tape slitting method is provided, characterized in that the slitting method comprises:

[0017] S100, the deviation correction method of the above material tape slitting;

[0018] S200, cutting the target material tape at the first cutting track and the second cutting track at the same time to obtain a plurality of sub-material tapes after cutting.

[0019] According to a third aspect of the embodiment of the present application, a deviation correction mechanism is provided, comprising:

[0020] A compression roller, in the axial direction of the compression roller, the outer diameter of both ends of the compression roller is smaller than the outer diameter of the middle of the compression roller;

[0021] A driving assembly, the compression roller is connected with the driving end of the driving assembly.

[0022] Optionally, the diameter of both ends of the compression roller is smaller than the diameter of the middle of the compression roller.

[0023] Optionally, the driving assembly comprises a motor, a lead screw and a connecting piece, the lead screw is connected with the driving end of the motor, the connecting piece is rotationally connected with the lead screw, and the compression roller is arranged on the connecting piece.

[0024] According to a fourth aspect of the embodiment of the present application, a deviation correction device is provided, comprising a plurality of the above deviation correction mechanisms, and a plurality of the deviation correction mechanisms are arranged in sequence along the width direction of the target material tape.

[0025] Optionally, the target material belt comprises a plurality of first regions and second regions arranged in sequence along the width direction, the first regions are coating regions, and the second regions are non-coating regions, and one of the deviation correction mechanisms corresponds to one of the coating regions.

[0026] Optionally, the deviation correction device further comprises a driving mechanism, and the driving mechanism comprises a plurality of output ends, and one of the output ends is connected with one or more of the deviation correction mechanisms.

[0027] Optionally, the driving mechanism is configured to drive one or more of the deviation correction mechanisms to move to adjust the spacing between two adjacent deviation correction mechanisms.

[0028] According to a fifth aspect of the embodiments of the present application, a slitting device is provided, comprising:

[0029] the deviation correction mechanism described above;

[0030] a cutting mechanism, which is arranged downstream of the deviation correction mechanism;

[0031] a detection mechanism, which is arranged downstream of the cutting mechanism.

[0032] According to a sixth aspect of the embodiments of the present application, a slitting device is provided, comprising:

[0033] the deviation correction device described above;

[0034] a cutting mechanism, which is arranged downstream of the deviation correction device;

[0035] a detection mechanism, which is arranged downstream of the cutting mechanism.

[0036] One technical effect of the embodiments of the present application is that, by performing the S1 step, the reference side of the target material belt is corrected; according to the offset of the cutting track of the target material belt obtained, the S3 step is performed, the target material belt is slightly shrunk in the width direction by the pressure roller, so as to adjust the position of the cutting track, so that the cutting track of the target material belt can be cut at the same time by the cutting mechanism, thereby improving the slitting efficiency; and compared with the slitting scheme without deviation correction by the pressure roller, the size tolerance of the sub-material belt after slitting can be reduced, and the quality of the sub-material belt can be improved.

[0037] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0039] Figure 1 A schematic diagram of a correction method in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of a pressure roller and a target material tape when the pressure roller is not pressed against the target material tape in an embodiment of the present application;

[0041] Figure 3 A schematic diagram of a pressure roller and a target material tape when the pressure roller is pressed against the target material tape in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of a target material tape in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of a slitting device in an embodiment of the present application;

[0044] Figure 6 A schematic diagram of a correction mechanism in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of a correction device in an embodiment of the present application;

[0046] Figure 8 A schematic diagram of a correction device and a target material tape in an embodiment of the present application;

[0047] Figure 9 A schematic diagram of a pressure roller and a target material tape in an embodiment of the present application;

[0048] Figure 10 A schematic diagram of a pressure roller and a target material tape in an embodiment of the present application.

[0049] BRIEF DESCRIPTION OF THE DRAWINGS: slitting device 1000;

[0050] correction mechanism 100; cutting mechanism 200; detection mechanism 300;

[0051] drive assembly 1; motor 11; lead screw 12; connecting piece 13; pressure roller 2;

[0052] target material tape 400;

[0053] correction device 500;

[0054] drive mechanism 501; output end 5011; locking mechanism 502; guide mechanism 503;

[0055] first region A; second region B;

[0056] sub-material tape a;

[0057] cutting track G; first cutting track J; second cutting track K;

[0058] Reference side P. DETAILED DESCRIPTION

[0059] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments are not limitations on the scope of the present application, unless otherwise specifically stated.

[0060] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the application, its application, or uses.

[0061] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, the techniques, methods, and devices are further explained in connection with the description of the exemplary embodiments.

[0062] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0063] It should be noted that like reference numerals and letters in the various figures indicate similar items, and thus, once an item is defined in one figure, it is not necessary to discuss it further in subsequent figures.

[0064] In the description of the present application, the terms "first", "second", and the like, if any, can expressly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0065] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0066] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] like Figures 1-10 As shown, according to a first aspect of an embodiment of this application, a correction method is provided, comprising:

[0068] S1, taking one edge of the target strip 400 in the width direction as the reference side P, and correcting the reference side P;

[0069] S2, obtain the offset of the cutting trajectory G of the target strip 400;

[0070] S3, according to the offset of the cutting trajectory G, control the drive component 1 to drive the pressure roller 2 to press the target material strip 400 down by a first preset size, and the target material strip 400 shrinks by a second preset size in the width direction.

[0071] In this application, the correction method requires dividing the target strip 400 into multiple sub-strips a when cutting the target strip 400.

[0072] The correction method of this application includes steps S1, S2 and S3.

[0073] In step S1, the target strip 400 has two edges in the width direction, one of which is the reference side P of the target strip 400. The reference side P is corrected first.

[0074] For example, a reference element is provided near the reference side P, so that the reference side P is aligned with the reference element to achieve the correction of the reference side P.

[0075] For example, the target strip 400 can be axially adjusted by the alignment roller so that the reference side P of the target strip 400 is aligned with the reference piece.

[0076] In step S2, the offset of the cutting trajectory G of the target strip 400 is obtained. In one embodiment, the target strip 400 can be detected by a CCD camera to obtain the offset of the cutting trajectory G of the target strip 400. In another embodiment, after the target strip 400 is cut, multiple sub-strips a are obtained. The CCD camera detects the sub-strips a to determine whether the size of the sub-strips a is qualified. If the size of the sub-strips a is not qualified, the offset of the cutting trajectory G of the target strip 400 is obtained based on the detection result of the sub-strips a.

[0077] like Figure 5 , Figure 6 and Figure 7 As shown, the correction method in this application uses a correction mechanism 100 for adjustment. The correction mechanism 100 includes a drive component 1 and a pressure roller 2. The moving end of the drive component 1 is connected to the pressure roller 2. The drive component 1 can drive the pressure roller 2 to move closer to or away from the target material belt 400. The pressure roller 2 is located above the target material belt 400.

[0078] like Figure 2 and Figure 3 As shown, in step S3, based on the offset of the cutting trajectory G of the target strip 400, the drive assembly 1 controls the pressure roller 2 to press down on the target strip 400. At least a portion of the target strip 400 will change from a plane to an arc surface, and the dimension of the target strip 400 in the width direction will shrink. When the first preset dimension is pressed down, the target strip 400 shrinks in the width direction by a second preset dimension, and the cutting trajectory G will also shift, thereby adjusting the position of the cutting trajectory G to correct the deviation of the cutting trajectory G.

[0079] The number of cutting trajectories G of the target strip 400 can be one, two, three or more.

[0080] In this embodiment, step S1 is performed to correct the reference side P of the target strip 400 to ensure the position of the reference side P; based on the offset of the obtained cutting trajectory G, step S3 is performed to press down the pressure roller 2 to slightly shrink the target strip 400 in the width direction, thereby adjusting the position of the cutting trajectory G. This ensures that the dimensions of the multiple sub-strips a formed after being cut by the cutting mechanism 200 according to one, two, three or more cutting trajectories G of the target strip 400 meet the requirements, thereby improving the cutting efficiency; and compared with the cutting scheme without correction by the pressure roller 2, the dimensional tolerance of the cut sub-strips a can be reduced, and the quality of the sub-strips a can be improved.

[0081] In one optional embodiment, the second preset size is twice the offset of the cutting trajectory G of the target strip 400; specifically, the second preset size is the shrinkage size of the target strip 400 in the width direction after the pressure roller 2 presses down on the target strip 400; and the shrinkage of the target strip 400 in the width direction will shrink on both sides of the axial direction of the pressure roller 2, so the offset of the cutting trajectory G is the size that needs to be adjusted on one side, therefore the second preset size is twice the offset of the cutting trajectory G.

[0082] In one optional implementation, the ratio of the first preset size to the second preset size is 15:1; using this ratio results in higher correction accuracy, thereby reducing the dimensional tolerance of the slit sub-strip a. For example, when the first preset size is 3mm, the target strip 400 will shrink by 0.2mm in the width direction.

[0083] like Figure 4 As shown, in an optional embodiment, the target strip 400 includes a plurality of sequentially arranged first regions A and second regions B along its width direction. The cutting trajectory G located in the first region A is a first cutting trajectory J, and the cutting trajectory G located in the second region B is a second cutting trajectory K. The pressure roller 2 corresponds to the first region A and / or the second region B. Specifically, along the width direction of the target strip 400, the target strip 400 includes a plurality of sequentially arranged first regions A and second regions B. This can be understood as the first region A, second region B, first region A, second region B... being arranged alternately. The number of first regions A and the number of second regions B can be the same or different. Among them, the first region A has one or more cutting trajectories G, and the cutting trajectory G located in the first region A is the first cutting trajectory J; the second region B has one or more cutting trajectories G, and the cutting trajectory G located in the second region B is the second cutting trajectory K. Therefore, the target strip 400 has a plurality of cutting trajectories G.

[0084] like Figure 9 As shown, in one specific embodiment, the pressure roller 2 corresponds to the first region A.

[0085] In another specific embodiment, the pressure roller 2 corresponds to the second region B.

[0086] In another specific embodiment, a pressure roller 2 is provided in the first region A and a pressure roller 2 is provided in the second region B.

[0087] like Figure 10As shown, taking the pressure roller 2 corresponding to the second region B as an example, when the target material strip 400 is an electrode material strip, the first region A is an uncoated area, and the second region B is a coated area. That is to say, there is no coating in the first region A, and the first region A can be used to cut the electrode tabs. The second region B is coated with electrode coating. The pressure roller 2 is correspondingly arranged in the coating area. The pressure roller 2 can press down on the target material strip 400 in the second region B. Since the thickness of the uncoated area of ​​the target material strip 400 is relatively thin, if the pressure roller 2 presses down on the uncoated area, it may damage the uncoated area. However, the material of the coated area of ​​the target material strip 400 is thicker, and the pressure roller 2 is less likely to damage the target material strip when pressing down on the coated area. Therefore, while ensuring the correction accuracy, the pressure roller 2 is correspondingly arranged in the second region B, thereby avoiding damage to the first region A.

[0088] When both the first region A and the second region B are non-coating areas, a pressure roller 2 can be set in the first region A, or both the first region A and the second region B can be set with pressure rollers 2.

[0089] When both the first region A and the second region B are coating areas, a pressure roller 2 can be set in the first region A, or both the first region A and the second region B can be set with pressure rollers 2.

[0090] In an optional implementation, between step S1 and step S2, the correction method further includes:

[0091] S01, the target strip 400 is cut on the first cutting trajectory J and the second cutting trajectory K to obtain multiple sub-strips a after cutting;

[0092] S02, the sub-material strip a is detected to obtain the offset of the first cutting trajectory J and the offset of the second cutting trajectory K of the target material strip 400.

[0093] In step S01, the target strip 400 is cut by the cutting mechanism 200 on the first cutting trajectory J and the second cutting trajectory K, thereby obtaining multiple sub-strips a.

[0094] In step S02, multiple sub-material strips a are detected by a CCD camera to determine whether the size of the sub-material strip a is qualified. If the size of the sub-material strip a is not qualified, the offset of the first cutting trajectory J and the offset of the second cutting trajectory K of the target material strip 400 are obtained based on the detection result of the sub-material strip a. In this embodiment, by directly detecting the sub-material strip a, a more accurate offset can be obtained, thereby improving the cutting accuracy.

[0095] like Figure 3 As shown, in one alternative embodiment, the axial length of the pressure roller 2 is equal to or less than the width of the corresponding first region A or second region B.

[0096] In an embodiment where the pressure roller 2 is arranged opposite to the first region A, the axial length of the pressure roller 2 is equal to or less than the width of the first region A.

[0097] In the embodiment where the pressure roller 2 is arranged opposite to the second region B, the axial length of the pressure roller 2 is equal to or less than the width of the second region B.

[0098] In an embodiment where a pressure roller 2 is provided in a first region A and a pressure roller 2 is provided in a second region B, the axial length of the pressure roller 2 arranged in the first region A is equal to or less than the width of the first region A, and the axial length of the pressure roller 2 arranged in the second region B is equal to or less than the width of the first region A.

[0099] like Figure 10 As shown, taking the example where the axial length of the pressure roller is equal to or less than the width of the second region B, when the target material strip 400 is an electrode strip, the first region A is an uncoated area, and the second region B is a coated area. That is, there is no coating in the first region A, and the first region A can be used to cut electrode tabs, while the second region B is coated with electrode coating. The axial direction of the pressure roller 2 is the same as the width direction of the target material strip 400, and the pressure roller 2 will contact the second region B. Since the thickness of the uncoated area of ​​the target material strip 400 is relatively thin, if the pressure roller 2 presses on the uncoated area, it may damage the uncoated area. However, the material of the coated area of ​​the target material strip 400 is thicker, and the pressure roller 2 is less likely to damage the target material strip when pressing down on the coated area. By setting the axial length of the pressure roller 2 to be equal to or less than the width of the first region B, it is possible to avoid the pressure roller 2 contacting the first region A, thereby avoiding damage to the first region A.

[0100] like Figure 9 As shown, taking the example where the axial length of the pressure roller 2 is equal to or less than the width of the first region A, when the target material strip 400 is an electrode material strip, the first region A is an uncoated area and the second region B is a coated area. That is to say, there is no coating in the first region A, and the first region A can be used to cut the electrode tabs. The second region B is coated with electrode coating. The axial direction of the pressure roller 2 is the same as the width direction of the target material strip 400. The pressure roller 2 will contact the first region A. By setting the axial length of the pressure roller 2 to be equal to or less than the width of the first region A, it is possible to avoid the pressure roller 2 contacting the electrode coating in the second region B, thereby avoiding damage to the electrode coating in the second region B.

[0101] According to a second aspect of the embodiments of this application, a strip cutting method is provided, the cutting method comprising:

[0102] S100, as described above, the correction method for strip cutting; the first cutting trajectory J and the second cutting trajectory K of the target strip 400 are corrected by the correction method described above.

[0103] S200, the target material strip 400 is simultaneously cut along the first cutting trajectory J and the second cutting trajectory K to obtain multiple sub-material strips a after cutting; specifically, after correcting the first cutting trajectory J and the second cutting trajectory K of the target material strip 400, the cutting mechanism 00 simultaneously cuts the target material strip 400 along the first cutting trajectory J and the second cutting trajectory K to obtain multiple sub-material strips a; in this embodiment, multiple cutting trajectories G of the target material strip 400 can be cut simultaneously, thereby improving the cutting efficiency.

[0104] According to a third aspect of the embodiments of this application, a correction mechanism 100 is provided, which can be used to implement step S3 of the correction method described above; it includes a pressure roller 2 and a drive assembly 1; in the axial direction of the pressure roller 2, the outer diameters at both ends of the pressure roller 2 are smaller than the outer diameter at the middle of the pressure roller 2; the pressure roller 2 is connected to the drive end of the drive assembly 1.

[0105] like Figure 5 , Figure 6 and Figure 7 As shown, the correction mechanism 100 includes a pressure roller 2 and a drive assembly 1. The pressure roller 2 is located at the moving end of the drive assembly 1. The drive assembly 1 can drive the pressure roller 2 to move closer to or away from the target material strip 400. The drive assembly 1 drives the pressure roller 2 to move closer to the target material strip 400, which can press down on the target material strip 400 so that part of the target material strip 400 changes from a plane to an arc surface, thereby shrinking the target material strip 400 in the width direction, thereby realizing the correction of the target material strip 400.

[0106] To further explain, along the axial direction of the pressure roller 2, the outer diameters at both ends of the pressure roller 2 are smaller than the outer diameter at the middle of the pressure roller 2. In other words, the outer surface at the middle position of the pressure roller 2 will protrude from the outer surfaces at both ends of the pressure roller 2. When the pressure roller 2 contacts and presses down on the first region A or the second region B, the middle position of the pressure roller 2 will first contact the first region A or the second region B. The first region A or the second region B gradually changes from a plane to an arc surface, and the two ends of the first region A or the second region B are raised upwards. Since the outer diameters at both ends of the pressure roller 2 are smaller than the outer diameter at the middle of the pressure roller 2, it is also possible to avoid the two ends of the first region A or the second region B from contacting the two ends of the pressure roller 2.

[0107] In one optional embodiment, the outer surface of the pressure roller 2 is provided with a wear-resistant coating; specifically, since the outer surface of the pressure roller 2 is in contact with the target material belt 400, a wear-resistant coating is provided on the outer surface of the pressure roller 2 to improve the wear resistance of the pressure roller 2, thereby increasing its service life.

[0108] Among them, the pressure roller 2 is made of non-metallic material.

[0109] The wear-resistant coating can be a ceramic coating or a resin coating.

[0110] like Figure 6 As shown, in an optional embodiment, the drive assembly 1 includes a motor 11, a lead screw 12, and a connector 13. The lead screw 12 is connected to the drive end of the motor 11, and the connector 13 is rotatably connected to the lead screw 12. The pressure roller 2 is disposed on the connector 13. Specifically, the lead screw 12 is connected to the drive end of the motor 11, and the connector 13 is rotatably connected to the lead screw 12. The motor 11 can drive the lead screw 12 to rotate, the connector 13 can move relative to the lead screw 12, and the pressure roller 2 is disposed on the connector 13, thereby enabling the pressure roller 2 to move.

[0111] To further explain, the lead screw 12 and the connecting piece 13 are connected by threads. According to the parameters of the threads, the distance that the pressure roller 2 moves in a straight line can be precisely controlled by controlling the number of rotations of the lead screw 1. In other words, the first preset dimension of the pressure roller 2 pressing down can be precisely controlled, thereby improving the correction accuracy.

[0112] The motor 11 can be a stepper motor or a servo motor.

[0113] In another alternative embodiment, the drive assembly 1 is a linear motor, and the pressure roller 2 is connected to the drive end of the linear motor. The linear motor can drive the pressure roller 2 to move in a straight line, thus driving the pressure roller 2 to move closer to or away from the target material belt 400.

[0114] like Figure 7 and Figure 8 As shown, according to a fourth aspect of the embodiments of this application, a deviation correction device 500 is provided, including a plurality of deviation correction mechanisms 100 as described above, wherein the plurality of deviation correction mechanisms 100 are arranged at intervals along the width direction of the target material strip 400; specifically, when the target material strip 400 has a plurality of cutting trajectories G, by setting a plurality of deviation correction mechanisms 100, the plurality of deviation correction mechanisms 100 are arranged at intervals along the width direction of the target material strip 400, and one deviation correction mechanism 100 can correspond to one cutting trajectory G, thereby enabling deviation correction of the plurality of cutting trajectories G of the target material strip 400, so as to improve production efficiency and deviation correction accuracy.

[0115] Among them, the number of cutting trajectories G on the target material strip 400 is greater than or equal to the number of correction mechanisms 100. One correction mechanism 100 corresponds to one cutting trajectory G, but not every cutting trajectory G is provided with a correction mechanism 100. For example, there is a cutting trajectory G between two adjacent correction mechanisms 100 that does not have a corresponding correction mechanism 100.

[0116] Each correction mechanism 100 performs correction work based on the offset of the cutting trajectory G of the corresponding or adjacent area. If the cutting trajectory G of the corresponding or adjacent area does not shift, there is no need to press down the target strip 400.

[0117] like Figure 10 As shown, in one optional embodiment, the target material strip 400 includes a plurality of sequentially arranged first regions A and second regions B along its width direction. The first region A is a coating area, and the second region B is a non-coating area. One web guiding mechanism 100 corresponds to one non-coating area. Specifically, along the width direction of the target material strip 400, the target material strip 400 includes a plurality of sequentially arranged first regions A and second regions B. This can be understood as first regions A, second regions B, first regions A, second regions B… being arranged alternately, and the number of first regions A and the number of second regions B can be the same. The areas can also be different; the first area A is the uncoated area, that is, there is no coating in the first area A, and the first area A can be used to cut the electrode tabs; the second area B is the coating area, and the second area B is coated with electrode coating; the correction mechanism 100 is correspondingly arranged in the coating area. Since the thickness of the uncoated area of ​​the target material strip 400 is relatively thin, if the pressure roller 2 presses down on the uncoated area, it may damage the uncoated area. However, the coating area of ​​the target material strip 400 is thicker, and the pressure roller 2 is less likely to damage the target material strip when pressing down on the coating area. Therefore, while ensuring the correction accuracy, the pressure roller 2 is correspondingly arranged in the second area B, thereby avoiding damage to the first area A.

[0118] like Figure 7 As shown, in an optional embodiment, the correction device 500 further includes a drive mechanism 501, which includes a plurality of output terminals 5011, one of which is connected to one or more correction mechanisms 100. The drive mechanism 501 is configured to drive one or more correction mechanisms 100 to move to adjust the spacing between two adjacent correction mechanisms 100. Specifically, the drive mechanism 501 can drive the correction mechanism 100 to move along the width direction of the target strip 400 to adjust the spacing between two adjacent correction mechanisms 100, thereby enabling compatibility with target strips 400 of different sizes and sub-strips a of different sizes that need to be cut.

[0119] In one specific embodiment, the drive mechanism 501 includes a plurality of drive members, each drive member having an output end 5011. A correction mechanism 100 is connected to the output end 5011 of a drive member. Each drive member can drive the corresponding correction mechanism 100 to move along the width direction of the target strip 400, thereby enabling individual adjustment of the plurality of correction mechanisms 100.

[0120] In one optional embodiment, the correction device 500 is located at the drive end of the lifting device. The lifting device can drive the correction device 500 to lift as a whole to adjust the position of the correction device 500, so as to avoid or adjust the relative position between the correction device 500 and the target material belt 400.

[0121] like Figure 7 As shown, in an optional embodiment, the correction device 500 further includes a plurality of locking mechanisms 502, one of which is disposed on a corresponding correction mechanism 100. The locking mechanism 502 is configured to restrict the movement of the correction mechanism 100 or to release the restriction on the movement of the correction mechanism 100. Specifically, after the driving mechanism 501 drives the correction mechanism 100 to move and adjust the distance between two adjacent correction mechanisms 100, the locking mechanism 502 locks the corresponding correction mechanism 100 to restrict further movement of the correction mechanism 100, so as to ensure that the distance between two adjacent correction mechanisms 100 does not change when the correction device 500 is working. When it is necessary to adjust the distance between two adjacent correction mechanisms 100, the restriction on the correction mechanism 100 is released so that the driving mechanism 501 can drive the correction mechanism 100 to move to adjust the distance between two adjacent correction mechanisms 100.

[0122] In an optional embodiment, the correction device 500 further includes a guide mechanism 503, each correction mechanism 100 being slidably connected to the guide mechanism 503, and each locking mechanism 502 being slidably connected to the guide mechanism 503, wherein the locking mechanism 502 and the guide mechanism 503 are capable of locking or unlocking.

[0123] Specifically, the correction mechanism 100 and the guide mechanism 503 are slidably connected along the width direction of the target material strip 400. The guide mechanism 503 can provide guidance for the correction mechanism 100 to move along the width direction of the target material strip 400, so as to avoid the correction mechanism 100 from deviating during the movement.

[0124] To further explain, each locking mechanism 502 is slidably connected to the guide mechanism 503, and the locking mechanism 502 can lock or unlock with the guide mechanism 503. Specifically, the guide mechanism 503 can provide a mating position for the locking mechanism 502. When it is necessary to lock the corresponding correction mechanism 100, it is only necessary to mate the corresponding locking mechanism 502 with the guide mechanism 503.

[0125] In one specific embodiment, the guiding mechanism 503 includes a guide rail, the length direction of which is the width direction of the target strip 400, and the correction mechanism 100 is slidably connected to the guide rail via a slider.

[0126] In one specific embodiment, the locking mechanism 502 is a set screw, which is threadedly connected to the correction mechanism 100. By turning the set screw, one end of the set screw can be pressed onto the guide rail to lock the correction mechanism 100. When it is necessary to release the lock, the set screw is turned so that it does not contact the guide rail to release the correction mechanism 100.

[0127] In another specific implementation, the locking mechanism 502 is a clamp, which is set on the correction mechanism. The clamp can be locked to the guide rail by the internal wedge block after ventilation / power is cut off.

[0128] According to a fifth aspect of the embodiments of this application, a slitting device 1000 is provided, which can be used to implement the above-described slitting method; it includes a correction mechanism 100, a cutting mechanism 200, and a detection mechanism 300; the cutting mechanism 200 is located downstream of the correction mechanism 100; and the detection mechanism 300 is located downstream of the cutting mechanism 200.

[0129] like Figure 5 As shown, the slitting equipment 1000 includes a correction mechanism 100, a cutting mechanism 200, and a detection mechanism 300. The correction mechanism 100, the cutting mechanism 200, and the detection mechanism 300 are arranged sequentially along the conveying direction of the target material strip 400. The cutting mechanism 200 is used to cut the target material strip 400 according to the cutting trajectory G. The detection mechanism 300 is used to detect the dimensions of the multiple sub-material strips a formed after cutting. The correction mechanism 100 corrects the cutting trajectory G of the target material strip 400 according to the detection results of the detection mechanism 300.

[0130] To further explain, the correction mechanism 100 and the cutting mechanism 200 are arranged adjacent to each other. After the correction mechanism 100 presses down on the target strip 400, the cutting mechanism 200 can cut the target strip 400 as quickly as possible to avoid the distance between the correction mechanism 100 and the cutting mechanism 200 being too long, which would cause the target strip 400 to spring back; and it can also reduce the length of the slitting equipment 1000.

[0131] In an optional embodiment, the slitting device 1000 further includes a control mechanism. The correction mechanism 100, the cutting mechanism 200, and the detection mechanism 300 are all electrically connected to the control mechanism. The control mechanism can control the detection mechanism 300 to detect the sub-material strip a and can obtain the correction amount of the target material strip 400 according to the detection structure. The control mechanism controls the correction mechanism 100 to work in order to correct the target material strip 400.

[0132] The control mechanism can be either a CPU or a PLC.

[0133] According to a sixth aspect of the embodiments of this application, a slitting device 1000 is provided, including the above-described correction device 500, cutting mechanism 200 and detection mechanism 300, wherein the cutting mechanism 200 is disposed downstream of the correction device 500; and the detection mechanism 300 is disposed downstream of the cutting mechanism 200.

[0134] The slitting equipment 1000 includes a correction device 500, a cutting mechanism 200, and a detection mechanism 300. The correction device 500, the cutting mechanism 200, and the detection mechanism 300 are arranged sequentially along the conveying direction of the target material strip 400. The cutting mechanism 200 is used to cut the target material strip 400 according to the cutting trajectory G. The detection mechanism 300 is used to detect the dimensions of the multiple sub-material strips a formed after cutting. The correction device 500 corrects the multiple cutting trajectories G of the target material strip 400 according to the detection results of the detection mechanism 300.

[0135] To further explain, the correction device 500 and the cutting mechanism 200 are arranged adjacent to each other. After the correction device 500 presses down on the target strip 400, the cutting mechanism 200 can cut the target strip 400 as quickly as possible to avoid the distance between the correction device 500 and the cutting mechanism 200 being too long, which would cause the target strip 400 to spring back; and it can also reduce the length of the slitting equipment 1000.

[0136] In an optional embodiment, the slitting equipment 1000 further includes a control mechanism. The correction device 500, the cutting mechanism 200, and the detection mechanism 300 are all electrically connected to the control mechanism. The control mechanism can control the detection mechanism 300 to detect the sub-material strip a and can obtain the correction amount of the target material strip 400 according to the detection structure. The control mechanism controls the correction device 500 to work to correct the target material strip 400.

[0137] The control mechanism can be either a CPU or a PLC.

[0138] The cutting mechanism 200 can use a cutting blade or laser cutting.

[0139] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A method for correcting deviations during strip cutting, characterized in that, include: S1, taking one edge of the target strip in the width direction as the reference side, and correcting the reference side; S2, obtain the offset of the cutting trajectory of the target strip; S3, based on the offset of the cutting trajectory, control the drive assembly to drive the pressure roller to press the target strip down by a first preset size, and the target strip shrinks by a second preset size in the width direction.

2. The method for correcting deviation in strip cutting according to claim 1, characterized in that, The second preset size is twice the offset of the cutting trajectory.

3. The method for correcting deviation in strip cutting according to claim 2, characterized in that, The ratio of the first preset size to the second preset size is 15:

1.

4. The method for correcting deviations in strip cutting according to claim 1, characterized in that, The target strip includes multiple first and second regions arranged sequentially along its width. The cutting trajectory located in the first region is the first cutting trajectory, and the cutting trajectory located in the second region is the second cutting trajectory. The pressure roller corresponds to the first region and / or the second region.

5. The method for correcting deviation in strip cutting according to claim 4, characterized in that, Between step S1 and step S2, the correction method further includes: S01, the target strip is cut along the first cutting trajectory and the second cutting trajectory to obtain multiple sub-strips after cutting; S02, the sub-material strip is detected to obtain the offset of the first cutting trajectory and the offset of the second cutting trajectory of the target material strip.

6. The method for correcting deviations in strip cutting according to claim 4, characterized in that, The axial length of the pressure roller is equal to or less than the width of the corresponding first or second region.

7. A method for cutting strip material, characterized in that, The segmentation method includes: S100, the method for correcting deviation in strip cutting as described in any one of claims 1-6; S200, the target strip is cut simultaneously on the first cutting trajectory and the second cutting trajectory to obtain multiple sub-strips after cutting.

8. A correction mechanism, characterized in that, include: The pressure roller has an outer diameter at both ends smaller than the outer diameter at the middle of the pressure roller in its axial direction. A drive assembly, wherein the pressure roller is connected to the drive end of the drive assembly.

9. The correction mechanism according to claim 8, characterized in that, The drive assembly includes a motor, a lead screw, and a connector. The lead screw is connected to the drive end of the motor, the connector is rotatably connected to the lead screw, and the pressure roller is disposed on the connector.

10. A correction device, characterized in that, It includes a plurality of correction mechanisms as described in claim 8 or 9, wherein the plurality of correction mechanisms are arranged at intervals along the width direction of the target strip.

11. The correction device according to claim 10, characterized in that, The target strip includes multiple first and second regions arranged sequentially along its width. The first region is a coating area, and the second region is a non-coating area. One of the correction mechanisms corresponds to one of the coating areas.

12. The correction device according to claim 10, characterized in that, The correction device further includes a drive mechanism, which has multiple output terminals, one of which is connected to one or more of the correction mechanisms.

13. The correction device according to claim 12, characterized in that, The drive mechanism is configured to drive one or more of the correction mechanisms to move in order to adjust the spacing between two adjacent correction mechanisms.

14. A slitting device, characterized in that, include: The correction mechanism as described in claim 8 or 9; A cutting mechanism, wherein the cutting mechanism is located downstream of the correction mechanism; The testing organization is located downstream of the cutting organization.

15. A slitting device, characterized in that, include: The correction device as described in any one of claims 10-13; A cutting mechanism, wherein the cutting mechanism is located downstream of the correction device; The testing organization is located downstream of the cutting organization.

Images