A slitting lower knife structure and a slitting apparatus

Abstract

The embodiment of the application provides a slitting lower knife structure and a slitting device, and relates to the technical field of mechanical equipment.The slitting lower knife structure comprises a support seat, a lower knife assembly, at least two lower knife blades arranged in sequence along the axial direction of a lower knife shaft, and a driving assembly arranged on the support seat.The driving assembly is configured to drive the lower knife shaft to move along the axial direction of the lower knife shaft, so as to adjust the position of the lower knife blade, thereby, when the lower knife blade in the slitting position is worn, the lower knife shaft does not need to be disassembled, and the new lower knife blade can be directly switched by moving the lower knife shaft, so that the knife adjusting time is greatly shortened.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment technology, and in particular to a slitting blade structure and slitting equipment. Background Technology

[0002] Slitting equipment is mainly used to cut sheet materials to the required size. However, the lower blade is extremely prone to wear during slitting. In order to ensure the slitting effect, the lower blade needs to be replaced regularly or when it becomes worn.

[0003] Currently, in integrated cutter shafts, the lower blade is usually fixed to the cutting position of the cutter shaft by a spacer. Once the lower blade wears out, the entire cutter shaft needs to be removed and the spacer needs to be removed before the lower blade can be replaced, which takes a long time. Summary of the Invention

[0004] This application provides a slitting blade structure and slitting equipment to solve the problem of long replacement time for the lower blade in existing slitting equipment.

[0005] In a first aspect, embodiments of this application provide a slitting blade structure, including:

[0006] Support base;

[0007] The lowering tool assembly includes a lowering tool shaft and at least two lowering blades disposed on the lowering tool shaft, wherein the at least two lowering blades are arranged sequentially along the axial direction of the lowering tool shaft;

[0008] A drive assembly, disposed on the support base, is configured to drive the lower cutting axis to move axially along the lower cutting axis to adjust the position of the lower cutting blade.

[0009] In one possible implementation, the cutting assembly further includes:

[0010] The lower tool holder has two ends of the lower tool shaft rotatably connected to it, and the drive assembly is configured to drive the lower tool holder to move along the axial direction of the lower tool shaft, so that the lower tool shaft moves.

[0011] A limiting component is configured to limit the position of the lower tool holder in a direction perpendicular to the axial direction of the lower tool shaft when the lower tool holder is driven to move by the driving component.

[0012] In one possible implementation, the limiting component includes:

[0013] The first limiting member is located on one side of the lower tool holder;

[0014] The second limiting member is located on the side of the lower tool holder opposite to the first limiting member;

[0015] A first driving member is disposed on the first limiting member and connected to the lower tool holder. The first driving member is configured to apply pressure to the lower tool holder so that the lower tool holder keeps in contact with the second limiting member.

[0016] The first limiting member and the second limiting member are used to connect with the frame on which the slitting blade structure is installed, or to connect with the support base.

[0017] In one possible implementation, the lowering tool assembly further includes a base plate located on the side of the lowering tool holder opposite to the lowering tool shaft and connected to the lowering tool holder. At least one slider is provided on the base plate, the slider being slidably connected to the support base. The driving assembly is connected to the slider and configured to drive the slider to move, thereby driving the lowering tool shaft to move.

[0018] In one possible implementation, the support base is provided with a slide rail that extends axially along the lower cutter shaft, and the slider is slidably connected to the slide rail.

[0019] In one possible implementation, the driving component is a linear motor, with the stator of the linear motor mounted on the support base and the mover of the linear motor mounted on the slider.

[0020] In one possible implementation, the lower cutting shaft is provided with at least three partitions, and at least two lower cutting blades are provided between two adjacent partitions.

[0021] In one possible implementation, a dust removal assembly is also included, located on one side of the lower blade used for cutting by the lower cutter shaft.

[0022] In one possible implementation, the support base is provided with fixing members at both ends, the fixing members being used to connect to the frame on which the slitting blade structure is mounted.

[0023] In one possible implementation, the fastener is provided with an adjusting member configured to adjust the position of the fastener so that the position of the fastener is adapted to the frame.

[0024] Secondly, embodiments of this application provide a slitting device, including an upper slitting blade structure and a lower slitting blade structure as described in any of the first aspects, wherein the lower slitting blade structure cooperates with the upper slitting blade structure to perform slitting.

[0025] The slitting blade structure and slitting device provided in this application embodiment include a support base, a blade assembly, and a drive assembly. The blade assembly includes a blade shaft and at least two blades. The blades are arranged sequentially on the blade shaft along its axial direction. The drive assembly is mounted on the support base and can drive the blade shaft to move relative to the support base. Specifically, when the blade in the slitting position wears out, the drive assembly can drive the blade shaft to move a certain distance along its axial direction to move another intact blade to the slitting position and replace the worn blade for slitting. Compared to the existing integral blade shaft, this application directly sets at least two blades on the blade shaft for alternating use. This avoids frequent disassembly of the blade shaft to replace the blades without causing jumps, thus effectively shortening the blade replacement time. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 A perspective view of the slitting blade structure provided in this application;

[0028] Figure 2 for Figure 1 A front view of the slitting blade structure in the middle;

[0029] Figure 3 for Figure 1 Rear view of the slitting blade structure in the middle;

[0030] Figure 4 A perspective view of the slitting blade structure provided in the embodiment of this application after removing the second limiting member;

[0031] Figure 5 for Figure 4 A front view of the slitting blade structure in the image.

[0032] Figure label:

[0033] 100 - Support base; 110 - Fixing component; 120 - Adjusting component;

[0034] 200-Lowering tool assembly; 210-Lowering tool shaft; 220-Lowering blade; 230-Lowering tool holder; 240-Base plate; 250-Limiting assembly; 251-First driving component; 252-First limiting component; 253-Second limiting component; 260-Slider; 270-Connecting plate; 280-Slide rail;

[0035] 300-Driver Components;

[0036] 400 - Dust Removal Components;

[0037] 500 - Separator.

[0038] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] Slitting equipment is mainly used for slitting sheet materials, such as battery tabs, paper sheets, and films. It generally includes an upper cutter shaft and a lower cutter shaft. The upper cutter shaft is equipped with a lower blade, and the lower cutter shaft is equipped with a lower blade. The upper blade and the lower blade work together to slit.

[0041] During the slitting process, the lower blade is extremely prone to wear. To ensure the slitting effect, the lower blade needs to be replaced periodically or when it becomes worn.

[0042] Currently, there are two common types of lower cutting shafts. One type is the air expansion shaft type, which uses an air expansion shaft as the lower cutting shaft. The lower cutting spacer is fitted on the air expansion shaft to separate and position the lower cutting blade. When changing or moving the lower cutting blade, the air expansion shaft shrinks, and the lower cutting spacer can be moved to replace the lower cutting blade. After replacement, the air expansion shaft is tightened to fix the lower cutting blade.

[0043] In practical applications, this method results in large axial and radial runout of the lower blade spacer, sometimes exceeding 10µm. The repeatability of the lower blade spacer also varies significantly, sometimes exceeding 5µm. This reduces the overall slitting effect and is not suitable for materials requiring high precision, such as battery electrodes.

[0044] Another type is the electrode slitting cutter shaft commonly used in the lithium battery industry. Its cutter shaft is an integral cutter shaft with a cutter blade set at the slitting position. The cutter blade is positioned by a cutter bushing. Once the cutter blade wears out, the cutter shaft and cutter bushing need to be removed before the cutter blade can be replaced. The operation is cumbersome, time-consuming and labor-intensive.

[0045] To avoid the aforementioned problems, this application provides a slitting blade structure and slitting equipment. The slitting blade structure has multiple blades mounted on a lower blade shaft. When a blade at the slitting position wears out, the lower blade shaft can be moved, allowing an unworn blade to move to the slitting position to continue slitting. This eliminates the need for frequent disassembly of the lower blade shaft; all blades on the shaft only need to be replaced at once when they are all worn out. This single disassembly allows for long-term continuous use, effectively reducing the time required for blade replacement and preventing blade jumping, thus improving the quality of the slitting product.

[0046] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0047] For some embodiments of this application, please refer to Figure 1 , Figure 2 and Figure 3 As shown, the slitting blade structure includes a support base 100, a blade assembly 200, and a drive assembly 300.

[0048] The support base 100 is used to connect with the frame or other device for installing the slitting blade structure. The drive assembly 300 is disposed on the support base 100. The blade assembly 200 includes a blade shaft 210, on which at least two blades 220 are disposed, and the blades 220 are arranged sequentially at intervals along the extension direction of the blade shaft 210.

[0049] The number and interval of the lower blades 220 can be determined according to the actual situation.

[0050] For example, for each slitting position, 20 lower blades 220 can be set, with a spacing of 5mm between adjacent lower blades 220. Each time it is necessary to switch the lower blade 220 used for slitting at the slitting position, the lower blade shaft 210 can be moved 5mm along its axial direction directly by the drive component 300. The 20 lower blades 220 can adapt to the needs of the slitting lower blade structure for 2 years or even longer, thereby achieving the purpose of not needing to disassemble the lower blade shaft 210 to replace the lower blades 220 for at least 2 years, effectively reducing the blade adjustment time.

[0051] Specifically, during use, if the lower blade 220 in the slitting position is worn and affects slitting, the drive assembly 300 is activated, driving the lower blade shaft 210 to move a certain distance relative to the support base 100 in the axial direction of the lower blade shaft 210, i.e., in the X direction, so that the unworn lower blade 220 is moved to the slitting position, allowing slitting to proceed normally.

[0052] Understandably, once the worn lower blade 220 moves, it will be misaligned with the upper blade on the upper cutter shaft of the slitting equipment, thus not affecting the normal slitting of materials such as electrode sheets.

[0053] In some embodiments of this application, the lowering tool assembly 200 further includes a lowering tool holder 230 and a limiting assembly 250.

[0054] The extension direction of the lower tool holder 230 is the same as the extension direction of the lower tool shaft 210, and both ends of the lower tool shaft 210 are rotatably connected to the lower tool holder 230 and supported by the lower tool holder 230.

[0055] For example, bearing mounting seats can be provided at both ends of the lower blade holder 230, the lower blade shaft 210 is rotatably connected to the bearing mounting seats through the bearings, and the lower blade shaft 210 can be connected to a motor or other equipment through a coupling, thereby driving the lower blade shaft 210 to rotate and cooperate with the upper blade shaft of the slitting device to perform slitting.

[0056] The limiting component 250 is connected to the lower tool holder 230. When the lower tool holder 230 is driven to move by the driving component 300, the limiting component 250 can limit the position of the lower tool holder 230 in the direction perpendicular to the axial direction of the lower tool shaft 210, that is, the position of the lower tool holder 230 in the Y direction, so as to prevent the lower tool holder 230 from shaking when it is driven to move by the driving component 300.

[0057] Specifically, the lower cutter shaft 210 is mounted on the lower cutter holder 230. When the drive assembly 300 drives the lower cutter holder 230 to move along the X direction, the lower cutter shaft 210 will move synchronously, thereby switching the lower blade 220 in the slitting position and realizing the rapid replacement of the worn lower blade 220. During this process, the limiting assembly 250 can limit the movement direction of the lower cutter holder 230 to prevent the lower cutter holder 230 from deflecting in the Y direction.

[0058] Further, please see Figure 1 , Figure 3 and Figure 4 As shown, the limiting component 250 includes a first limiting member 252, a second limiting member 253, and a first driving member 251.

[0059] The first limiting member 252 and the second limiting member 253 are respectively located on both sides of the extension direction of the lower tool holder 230, that is, on both sides of the X direction. The first driving member 251 is disposed on the first limiting member 252 and connected to the lower tool holder 230. The first driving member 251 can apply pressure to the lower tool holder 230 to keep the lower tool holder 230 in contact with the second limiting member 253. Thus, the position of the lower tool holder 230 in the Y direction is restricted from both sides by the first driving member 251 and the second limiting member 253, thereby preventing the lower tool holder 230 from shaking in the Y direction.

[0060] The first limiting member 252 and the second limiting member 253 are both used to connect with the support base 100 or to connect with the frame or other structures that install the cutting blade structure. As long as the first limiting member 252 and the second limiting member 253 can maintain their positions during use, provide support for the first driving member 251, and limit the position of the cutting blade holder 230, this embodiment does not impose any restrictions on them.

[0061] It is understandable that the first driving component 251 can be a clamping cylinder or other equipment, as long as it can apply appropriate clamping force to push the lower tool holder 230 to keep in contact with the second limiting component 253 and limit the movement direction of the lower tool holder 230.

[0062] For some embodiments of this application, please refer to Figure 1 , Figure 4 and Figure 5 As shown, the lowering tool assembly 200 also includes a base plate 240, which is located on the side of the lowering tool holder 230 away from the lowering tool shaft 210 and is connected to the lowering tool holder 230. At least one slider 260 is provided on the base plate 240, which is slidably connected to the support base 100. The driving assembly 300 is connected to the slider 260, and the driving assembly 300 can drive the slider 260 to move so as to drive the lowering tool shaft 210 to move.

[0063] Specifically, in the Z direction, the lower blade holder 230, the base plate 240, and the slider 260 are arranged vertically. The base plate 240 can be connected to the slider 260 via the connecting plate 270. When the drive assembly 300 drives the slider 260 to move along the X direction, the connecting plate 270 can drive the base plate 240, the lower blade holder 230 located above the base plate 240, and the lower blade shaft 210 rotatably connected to the lower blade holder 230 to move synchronously along the X direction, thereby switching the lower blade 220 in the slitting position and realizing the rapid switching of the lower blade 220.

[0064] Optionally, the first limiting member 252 and the second limiting member 253 can be configured as an inverted L-shaped plate, which includes a horizontal plate and a vertical plate. The horizontal plate is parallel to the X direction, and the vertical plate is parallel to the Y direction. The size of the lower tool holder 230 is smaller than the size of the base plate 240. The horizontal plate is placed above the base plate 240, and the vertical plate is located on the side of the base plate 240. The first driving member 251 applies a driving force to push the lower tool holder 230 to move, so that at least one of the lower tool holder 230 and the base plate 240 abuts against the second limiting member 253, thereby limiting the position of the lower tool shaft 210 in the Y direction.

[0065] Furthermore, rolling balls can be added to the contact surfaces of the second limiting member 253 with the base plate 240 and the lower tool holder 230 to achieve rolling contact, so that while limiting, the movement of the lower tool holder 230 and the base plate 240 in the X direction is not affected.

[0066] Optionally, a slide rail 280 can be provided on the support base 100. The extension direction of the slide rail 280 is the same as the movement direction of the lower cutter shaft 210, that is, the slide rail 280 extends along the X direction. The slider 260 is slidably connected to the slide rail 280, so that when the slider 260 is driven to move by the drive component 300, it only moves along the slide rail 280, thereby guiding the movement of the slider 260 through the slide rail 280.

[0067] Optionally, the slider 260 can be I-shaped, and the structure of the slide rail 280 is matched with the slider 260. In this way, when the slider 260 moves, the slide rail 280 can also restrict the position of the slider 260 in the Z direction to prevent the entire cutting assembly 200 from jumping on the support 100.

[0068] It is understood that the slide rail 280 and the slider 260 can also be other structures that cooperate to guide the movement, and this embodiment does not limit them.

[0069] In some embodiments of this application, the drive component 300 is a linear motor, the stator of which is disposed on the support base 100 and the mover of which is disposed on the slider 260.

[0070] The linear motor consists of a stator and a mover. The stator is fixed on the support base 100 and extends along the X direction. When the stator is energized, it generates a moving magnetic field. This magnetic field interacts with the magnetic field of the mover to generate a driving force, allowing the mover to move along the direction of the stator. This causes the slider 260 connected to the mover to move with the mover, thereby driving the base plate 240, the lower tool holder 230, and the lower tool shaft 210 to move synchronously. This achieves precise adjustment of the position of the lower tool shaft 210. In terms of positioning accuracy, the repeatability can reach up to 2µm. Compared with the traditional method of changing the lower tool 220, where the repeatability is around 5µm through manual positioning or motor ball screw positioning, the repeatability is significantly improved.

[0071] It is understood that the drive assembly 300 may also be a combination of a lead screw and a motor, or other structures that can drive the lower cutter shaft 210 to perform linear motion. This embodiment does not limit it.

[0072] Furthermore, a closed-loop system of optical grating rulers can be added to improve repeatability and positioning accuracy.

[0073] Specifically, a grating ruler is a high-precision position measuring device, typically consisting of a series of closely spaced graduations. These graduations can be read by an optical sensor, allowing minute displacement changes to be detected by the grating ruler and the optical sensor. These minute displacement changes can be continuously monitored and fed back to the controller. The controller adjusts the linear motor's movement based on the difference between the actual position provided by the grating ruler and the target position to automatically compensate for the error, enabling the lower cutter shaft 210 to accurately move to the target position, achieving higher repeatability and thus effectively improving the slitting effect.

[0074] In different usage scenarios, there may be different cutting requirements, and the corresponding cutting position requirements may be different. In this embodiment, at least three separators 500 are provided on the lower blade shaft 210, and at least two lower blades 220 are provided between two adjacent separators 500.

[0075] The lower blade 220 between two adjacent separators 500 is used for slitting at one slitting position, thereby forming at least two different slitting areas corresponding to two different slitting positions to adapt to the usage requirements of different scenarios. In the area corresponding to each slitting position, the distance between adjacent lower blades will not be too large. When switching lower blades, the drive component 300 will only drive the lower blade axis 210 to move within a certain range, and will not move too far, so as not to affect the normal use of the slitting lower blade structure.

[0076] Understandably, the specific number and location of the 500 dividers can be adjusted according to actual usage requirements.

[0077] For example, four separators 500 are provided to form three cutting areas. The middle cutting area is more frequently used and can be equipped with 20 lower blades 220, while the cutting areas on both sides are used less often and the number of lower blades can be reduced.

[0078] In addition, the separator 500 can be composed of one or more lower blade spacers, as long as it can fix the corresponding lower blade 220 in the corresponding cutting area and does not cause displacement during use. This embodiment does not limit it.

[0079] During the slitting process, some debris may fly out. In order to avoid the debris from scattering, this embodiment also includes a dust removal component 400 in the slitting blade structure. The dust removal component 400 is located at the slitting position and can collect the debris by negative pressure adsorption when splitting.

[0080] Understandably, the dust removal component 400 can be a combination of a negative pressure fan, a duct system, a dust collection box or a dust collection bag, etc. Its adsorption port is opposite to the cutting position, which can directly collect the debris generated by cutting and send it into the dust collection box or dust collection bag through the duct system for storage, to be processed later.

[0081] Optionally, the dust removal assembly 400 can be fixed on the second limiting member 253. The lower cutter holder 230 is driven by the first driving member 251 and always keeps in contact with the second limiting member 253. The lower cutter shaft 210 is set on the lower cutter holder 230. Therefore, the dust removal assembly 400 is set on the second limiting member 253, which can keep the distance between the dust removal assembly 400 and the cutting position unchanged, thereby stably adsorbing the debris.

[0082] Of course, the dust removal component 400 can also be fixed on the support base 100 or on the frame for installing the slitting blade structure, as long as the working end of the dust removal component 400 does not move with the blade shaft 210, but always stays in the slitting position. This embodiment does not limit it.

[0083] In addition, when there are multiple cutting positions corresponding to the cutting axis, the dust removal component 400 can be set for each cutting position, or only one can be set. However, it is slidably connected to the second limiting member 253, so that when cutting is performed using different cutting positions, the dust removal component 400 can be moved to the corresponding cutting position.

[0084] In some embodiments of this application, the support base 100 is provided with fasteners 110 at both ends, which are used to connect with the frame on which the slitting blade structure is installed.

[0085] Specifically, the fastener 110 may have mounting holes or other structures, which can be connected to the frame or the wall panel or other structures in the mounting chamber of the slitting blade structure, so that the support 100 can stably support each component during use without shaking.

[0086] The fastener 110 and the support base 100 can be integrally formed or separately set; this embodiment does not limit them.

[0087] Furthermore, the fastener 110 is provided with an adjusting member 120, which is used to adjust the position of the fastener 110 so that the position of the fastener 110 is adapted to the frame or wall panel, etc., for connection.

[0088] For example, the adjusting member 120 may be composed of components such as a base, a support column, a bearing platform, a locking device, and a lifting mechanism. The base is used to contact the ground or other supporting platforms. The support column connects the base and the bearing platform. The lifting mechanism is used to drive the support column to extend and retract, adjusting the height of the bearing platform. The locking device is used to restrict the position of the adjusting member 120 after the bearing platform is adjusted to the required height. The bottom of the fixing member 110 is connected to the bearing platform. When the lifting mechanism drives the bearing platform to move up and down in the Z direction, the fixing member 110 can change its height as the bearing platform moves up and down, and at the same time change the height of the support base 100, so that the fixing member 110 can be connected to the frame or wall panel or other structures.

[0089] Furthermore, the adjusting member 120 can also adjust the position of the support base 100 in the Y direction. In this case, the adjusting member 120 can be composed of common components such as screws and support platforms, so that the adjusting member 120 can adjust the position of the fixing member 110 in both the Z and Y directions.

[0090] This application embodiment also provides a slitting device, including a slitting upper blade structure and a slitting lower blade structure as described in the above embodiment. The slitting upper blade structure includes an upper blade, which is located at the slitting position and cooperates with the lower blade 220, which is also located at the slitting position, to perform slitting.

[0091] It is understood that the slitting upper blade structure can adopt a conventional upper blade shaft and upper blade structure, which is well known to those skilled in the art, and will not be described in detail here.

[0092] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A slitting blade structure, characterized in that, include: Support base (100); The lowering blade assembly (200) includes a lowering blade shaft (210), at least two lowering blades (220) disposed on the lowering blade shaft (210), a lowering blade holder (230), and a base plate (240). The at least two lowering blades (220) are arranged sequentially along the axial direction of the lowering blade shaft (210). The base plate (240) is located on the side of the lowering blade holder (230) away from the lowering blade shaft (210) and is connected to the lowering blade holder (230). A slider (260) is disposed on the base plate (240), and the slider (260) is slidably connected to the support base (100). A drive assembly (300) is disposed on the support base (100), and the drive assembly (300) is configured to drive the lower cutter shaft (210) to move along the axial direction of the lower cutter shaft (210) to adjust the position of the lower blade (220); The drive assembly (300) is connected to the slider (260), and the drive assembly (300) is further configured to drive the slider (260) to move in order to drive the lower cutter shaft (210) to move.

2. The slitting blade structure according to claim 1, characterized in that, The two ends of the lower cutting shaft (210) are rotatably connected to the lower cutting holder (230), and the driving assembly (300) is configured to drive the lower cutting holder (230) to move along the axial direction of the lower cutting shaft (210) so that the lower cutting shaft (210) moves. The lowering tool assembly (200) further includes a limiting component (250) configured to limit the position of the lowering tool holder (230) in a direction perpendicular to the axial direction of the lowering tool shaft (210) when the lowering tool holder (230) is driven to move by the driving component (300).

3. The slitting blade structure according to claim 2, characterized in that, The limiting component (250) includes: The first limiting member (252) is located on one side of the lower tool holder (230); The second limiting member (253) is located on the side of the lower tool holder (230) opposite to the first limiting member (252); A first driving member (251) is disposed on the first limiting member (252) and connected to the lower tool holder (230). The first driving member (251) is configured to apply pressure to the lower tool holder (230) so that the lower tool holder (230) keeps in contact with the second limiting member (253). The first limiting member (252) and the second limiting member (253) are used to connect with the frame on which the slitting blade structure is installed, or to connect with the support base (100).

4. The slitting blade structure according to claim 2, characterized in that, The support base (100) is provided with a slide rail (280), which extends along the axial direction of the lower cutter shaft (210), and the slider (260) is slidably connected to the slide rail (280).

5. The slitting blade structure according to claim 2, characterized in that, The drive assembly (300) is a linear motor, the stator of which is mounted on the support base (100), and the mover of which is mounted on the slider (260).

6. The slitting blade structure according to any one of claims 1-5, characterized in that, The lower cutting shaft (210) is provided with at least three partitions (500), and at least two lower cutting blades (220) are provided between two adjacent partitions (500).

7. The slitting blade structure according to any one of claims 1-5, characterized in that, It also includes a dust removal assembly (400) located on one side of the lower blade (220) used for cutting by the lower blade shaft (210).

8. The slitting blade structure according to any one of claims 1-5, characterized in that, The support base (100) is provided with fasteners (110) at both ends, and the fasteners (110) are used to connect with the frame on which the slitting blade structure is installed.

9. The slitting blade structure according to claim 8, characterized in that, An adjusting member (120) is provided on the fixing member (110), and the adjusting member (120) is configured to adjust the position of the fixing member (110) so that the position of the fixing member (110) is adapted to the frame of the slitting blade structure.

10. A slitting device, characterized in that, It includes a slitting upper blade structure and a slitting lower blade structure as described in any one of claims 1-9, wherein the slitting lower blade structure cooperates with the slitting upper blade structure to perform slitting.

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