Slitting tool and slitting device

Abstract

A slitting tool (100) and a slitting device (1000). The slitting tool (100) comprises: a first cutter assembly (10), comprising a first cutter shaft (11), and a first adjusting spacer sleeve (13), a second adjusting spacer sleeve (14) and a first cutter (12) which are sequentially arranged along the axial direction of the first cutter shaft (11) and abut against each other, wherein the first adjusting spacer sleeve (13) and the second adjusting spacer sleeve (14) abut against each other by means of two helical surfaces which have opposite rotation directions and can be attached to each other; and a second cutter assembly (20), comprising a second cutter (22), wherein the second adjusting spacer sleeve (14) is capable of rotating relative to the first adjusting spacer sleeve (13), and drives, under the action of the first adjusting spacer sleeve (13), the first cutter (12) to move along the axial direction of the first cutter shaft (11), so as to adjust the axial distance between the first cutter (12) and the second cutter (22).

Description

Slitting blade and slitting device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411475690.6 and Chinese Utility Patent Application No. 202422551040.7, filed on October 22, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of slitting technology, specifically to a slitting tool and slitting device. Background Technology

[0004] The slitting cutter in a slitting device typically includes an upper cutter assembly and a lower cutter assembly. These assemblies work together to cut a substrate of a certain width into multiple narrower strips. To ensure the cutting effect, the relative positions of the upper and lower cutters need to be adjusted to regulate their axial distance on the cutter shaft. Traditional slitting devices typically adjust this axial distance by replacing upper cutter pads of different thicknesses; however, this method is cumbersome. Summary of the Invention

[0005] Therefore, it is necessary to provide a simple-to-operate slitting tool and slitting device to address the above problems.

[0006] A slitting tool, the slitting tool comprising:

[0007] The first cutting tool assembly includes a first cutting shaft, and a first adjusting spacer, a second adjusting spacer, and a first cutting blade arranged sequentially and abutting each other along the axial direction of the first cutting shaft. The first adjusting spacer and the second adjusting spacer abut each other through two spiral surfaces with opposite directions of rotation and that can fit together.

[0008] The second cutting assembly includes a second cutting blade;

[0009] The second adjusting sleeve can rotate relative to the first adjusting sleeve, and under the action of the first adjusting sleeve, it drives the first cutter to move along the axial direction of the first cutter shaft, so as to adjust the axial distance between the first cutter and the second cutter.

[0010] In some embodiments, the first cutter assembly further includes an elastic element mounted on the first cutter shaft and used to provide an elastic force that drives the first cutter, the second adjusting spacer, and the first adjusting spacer to abut against each other in sequence.

[0011] The second adjusting sleeve rotates relative to the first adjusting sleeve, and the first cutter moves along the axial direction of the first cutter shaft under the action of the elastic force, so as to adjust the axial distance between the first cutter and the second cutter.

[0012] In some embodiments, the elastic element is a disc compression spring, which is sleeved on the first cutter shaft.

[0013] In some embodiments, the first cutter assembly further includes a mounting nut disposed on the side of the first cutter facing away from the second adjusting sleeve, and the elastic element abuts between the first cutter and the mounting nut.

[0014] In some embodiments, the first cutter assembly includes a mounting nut and a first limiting spacer. The first limiting spacer and the mounting nut are disposed on the side of the first cutter facing away from the second adjusting spacer, and the mounting nut is away from the first cutter relative to the first limiting spacer. The elastic element abuts between the first limiting spacer and the mounting nut.

[0015] In some embodiments, the first cutter assembly further includes a second limiting spacer, which is disposed on the first cutter shaft and abuts against the side of the first adjusting spacer opposite to the second adjusting spacer.

[0016] In some embodiments, at least one of the first adjusting spacer and the second adjusting spacer has an insertion hole on its peripheral side, the insertion hole being used for inserting an operating tool that rotates the first adjusting spacer or the second adjusting spacer to which it is located.

[0017] In some embodiments, both the first adjusting spacer and the second adjusting spacer have circumferential angle scale lines on their peripheral surfaces.

[0018] In some embodiments, the second cutter assembly further includes a second cutter shaft, a third limiting spacer, and a fourth limiting spacer. The second cutter, the third limiting spacer, and the fourth limiting spacer are all disposed on the second cutter shaft, and the third limiting spacer and the fourth limiting spacer are used to jointly limit the second cutter.

[0019] A slitting device, the slitting device comprising:

[0020] knife holder; and

[0021] As described in any of the above embodiments, the first cutting blade assembly and the second cutting blade assembly are both mounted on the blade holder.

[0022] In the aforementioned slitting cutter and slitting device, the first and second adjusting spacers abut against each other via two opposing and mating helical surfaces. Therefore, as the second adjusting spacer rotates relative to the first adjusting spacer, and a fixed position on the second helical surface continuously contacts a position on the first helical surface whose axial height gradually increases, the total length of the first and second adjusting spacers along the axial direction of the first cutter shaft gradually increases. This allows the second adjusting spacer to drive the first cutter to move axially along the first cutter shaft under the action of the first adjusting spacer, thereby adjusting the axial distance between the first and second cutters to adapt to different slitting requirements. Since this adjustment method does not require disassembly or replacement of components on the first cutter assembly, it is simple and time-saving to operate, highly efficient, and has a low manufacturing cost for the slitting cutter. Attached Figure Description

[0023] Figure 1 is a front view of a slitting device according to an embodiment of this application;

[0024] Figure 2 is a schematic diagram of the structure of the first adjusting spacer and the second adjusting spacer when the slitting tool is in the initial state in an embodiment of this application;

[0025] Figure 3 is a schematic diagram of the structure of the first adjusting spacer shown in Figure 2;

[0026] Figure 4 is a graph showing the relationship between the rotation angle of the second adjusting sleeve and the total length of the first and second adjusting sleeves when the slitting tool switches from the initial state to the adjustment state in one embodiment of this application.

[0027] Reference numerals: 1000, Slitting device; 100, Slitting blade; 200, Blade holder; 10, First cutting blade assembly; 20, Second cutting blade assembly; 11, First blade shaft; 111, First shaft portion; 112, First limiting portion; 12, First cutting blade; 13, First adjusting spacer; 131, First helical surface; 132, First surface; 133, Insertion hole; 134, Circumferential angle scale line; 14, Second adjusting spacer; 141, Second helical surface; 142, Second surface; 15, Elastic element; 16, Mounting nut; 17, First limiting spacer; 18, Second limiting spacer; 21, Second blade shaft; 211, Second shaft portion; 212, Second limiting portion; 22, Second cutting blade; 23, Third limiting spacer; 24, Fourth limiting spacer; 25, Locking nut; 210. Base plate; 220. First tool holder; 230. Second tool holder. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0030] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly 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 or an electrical connection; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] Please refer to Figure 1. This application provides a slitting tool 100, which includes a first cutting assembly 10 and a second cutting assembly 20. The first cutting assembly 10 and the second cutting assembly 20 cooperate to slit the substrate into strips with a narrower width.

[0035] As an example, the substrate can be an electrode, a separator, or other materials, which can be selected according to production needs.

[0036] As an example, the first cutting blade assembly 10 can be either the upper cutting blade assembly or the lower cutting blade assembly, and the second cutting blade assembly 20 can be either the upper cutting blade assembly or the lower cutting blade assembly. The specific configuration can be determined according to requirements. For ease of explanation, the following embodiments will use the example of the first cutting blade assembly 10 being the upper cutting blade assembly and the second cutting blade assembly 20 being the lower cutting blade assembly.

[0037] Please refer again to Figure 1, and simultaneously to Figures 2 and 3. The first cutter assembly 10 includes a first cutter shaft 11, and a first adjusting sleeve 13, a second adjusting sleeve 14, and a first cutter 12 arranged sequentially and abutting each other along the axial direction of the first cutter shaft 11. The first adjusting sleeve 13 and the second adjusting sleeve 14 abut each other through two helical surfaces with opposite directions of rotation that can fit together. The second cutter assembly 20 includes a second cutter shaft 21 and a second cutter 22, with the second cutter 22 disposed on the second cutter shaft 21. The second adjusting sleeve 14 can rotate relative to the first adjusting sleeve 13, and under the action of the first adjusting sleeve 13, drives the first cutter 12 to move along the axial direction of the first cutter shaft 11, thereby adjusting the axial distance between the first cutter 12 and the second cutter 22.

[0038] It can be understood that the axial distance between the first cutter 12 and the second cutter 22 is the same as the axial distance between the first cutter 12 and the second cutter 22 on the first cutter shaft 11.

[0039] The first cutter 12 is mounted on the first cutter shaft 11, and the first cutter 12 is usually perpendicular to the first cutter shaft 11. The first cutter shaft 11 is parallel to the second cutter shaft 21. The second cutter 22 is mounted on the second cutter shaft 21, and the second cutter 22 is perpendicular to the second cutter shaft 21. The edges of the first cutter 12 and the second cutter 22 are either spaced apart or close to each other in the axial direction of the first cutter shaft 11.

[0040] During slitting, if the substrate is suspended in mid-air, it is prone to shaking and unstable position, which will affect the final slitting effect. By setting a cooperating first cutter 12 and a second cutter 22, the substrate is controlled between the first cutter 12 and the second cutter 22. The second cutter 22 supports the substrate, and the first cutter 12 slits the substrate. By utilizing the interaction of the two cutters, the substrate can be slitting more stably and efficiently.

[0041] As an example, at least the first cutter 12 is a circular cutter, and the first cutter 12 is sleeved on the first cutter shaft 11. When the first cutter shaft 11 rotates, the first cutter 12 rotates accordingly, so that the first cutter 12 can continuously cut the substrate.

[0042] As an example, both the first adjusting sleeve 13 and the second adjusting sleeve 14 are installed on the first cutter shaft 11 by means of sleeve.

[0043] The spiral surface on the first adjusting sleeve 13 is defined as the first spiral surface 131, and the spiral surface on the second adjusting sleeve 14 is defined as the second spiral surface 141. The first spiral surface 131 and the second spiral surface 141 can fit together and rotate in opposite directions.

[0044] The first helical surface 131 has a first lowest position with the lowest axial height, a first highest position with the highest axial height, and a first intermediate position with an axial height between the first lowest position and the first highest position. The second helical surface 141 has a second lowest position with the lowest axial height, a second highest position with the highest axial height, and a second intermediate position with an axial height between the second lowest position and the second highest position. All positions on the first helical surface 131 with an axial height between the first lowest position and the first highest position are referred to as the first intermediate positions, and all positions on the second helical surface 141 with an axial height between the second lowest position and the second highest position are referred to as the second intermediate positions.

[0045] The surface of the first adjusting sleeve 13 facing away from the first spiral surface 131 is defined as the first surface 132, and the surface of the second adjusting sleeve 14 facing away from the second spiral surface 141 is defined as the second surface 142. The axial height of a certain position on the first spiral surface 131 refers to the distance between that position and the first surface 132 (as shown by L1 in Figure 2). The axial height of a certain position on the second spiral surface 141 refers to the distance between that position and the second surface 142 (as shown by L2 in Figure 2).

[0046] The slitting cutter 100 has an initial state and an adjustment state. In the initial state, the second lowest position of the second helical surface 141 is in contact with the first highest position of the first helical surface 131, and the second highest position of the second helical surface 141 is in contact with the first lowest position of the first helical surface 131. At this time, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 along the axial direction of the first cutter shaft 11 (the total distance between the first surface 132 and the second surface 142, as shown by L in Figure 2) is at its minimum. In the adjustment state, the second highest position of the second helical surface 141 is in contact with the first intermediate position or the first highest position of the first helical surface 131, and the second lowest position of the second helical surface 141 is not in contact with the first helical surface 131. When the second highest position of the second helical surface 141 contacts the first intermediate position of the first helical surface 131, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 in the axial direction of the first cutter shaft 11 increases. When the second highest position of the second helical surface 141 contacts the first highest position of the first helical surface 131, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 in the axial direction of the first cutter shaft 11 is at its maximum.

[0047] In actual use, the slitting cutter 100 can switch back to its initial state after the axial spacing adjustment of the first cutter 12 and the second cutter 22 is completed, so that the slitting cutter 100 starts from the initial state when the next axial spacing adjustment of the first cutter 12 and the second cutter 22 is performed. Alternatively, the slitting cutter 100 can retain its adjustment state after the axial spacing adjustment of the first cutter 12 and the second cutter 22 is completed, so that the slitting cutter 100 starts from the previous adjustment state when the next axial spacing adjustment of the first cutter 12 and the second cutter 22 is performed.

[0048] The second adjusting sleeve 14 rotates relative to the first adjusting sleeve 13, enabling the switching of the state of the slitting tool 100. Specifically, the rotation of the second adjusting sleeve 14 relative to the first adjusting sleeve 13 can be achieved by keeping the first adjusting sleeve 13 stationary while the second adjusting sleeve 14 rotates, or by rotating the first adjusting sleeve 13 while keeping the second adjusting sleeve 14 stationary. For ease of explanation, the following embodiments will use the example of the first adjusting sleeve 13 remaining stationary while the second adjusting sleeve 14 rotates.

[0049] The first adjusting sleeve 13 and the second adjusting sleeve 14 abut against each other via two helical surfaces with opposite directions of rotation that can fit together. Therefore, as the second adjusting sleeve 14 rotates relative to the first adjusting sleeve 13, and a fixed position (e.g., the second highest position) on the second helical surface 141 continuously contacts a position on the first helical surface 131 whose axial height gradually increases, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 in the axial direction of the first cutter shaft 11 gradually increases. This allows the second adjusting sleeve 14 to drive the first cutter 12 to move axially along the first cutter shaft 11 under the action of the first adjusting sleeve 13, thereby adjusting the axial distance between the first cutter 12 and the second cutter 22 to adapt to different slitting requirements. Since this adjustment method does not require disassembly or replacement of components on the first cutter assembly 10, it is simple and time-saving to operate, has high operating efficiency, and the manufacturing cost of the slitting tool 100 is low. Furthermore, the method of adjusting the axial distance between the first cutter 12 and the second cutter 22 using two helical surfaces with opposite directions of rotation provides high adjustment precision and good stability, effectively improving slitting quality and extending the life of the slitting tool 100. Moreover, because the helix angle is very small, it can achieve self-locking, preventing spontaneous rotation during use and ensuring high reliability.

[0050] For example, when the substrate is an electrode sheet, the axial spacing of the first cutter 12 and the second cutter 22 needs to be adjusted according to the different incoming electrode sheets during the slitting process.

[0051] For example, taking the slitting cutter 100 slitting the uncoated area of ​​the electrode sheet as an example, the first cutter 12 and the second cutter 22 are generally slitting in a close-to-close manner. This is because the current collector thickness in the uncoated area is usually relatively thin, roughly in the range of 4.5 micrometers to 10 micrometers. If the thin current collector is cut with gaps, it will be difficult to cut the current collector, and defects such as wavy edges are likely to occur.

[0052] It is understandable that "cutting with the first cutter 12 and the second cutter 22 close together" means that the first cutter 12 and the second cutter 22 cut each other with an axial distance of zero. "Cutting with the first cutter 12 and the second cutter 22 spaced apart" means that the first cutter 12 and the second cutter 22 cut each other with an axial distance greater than zero.

[0053] For example, taking the slitting of the coating area of ​​the electrode sheet by the slitting cutter 100 as an example, the first cutter 12 and the second cutter 22 usually use an intermittent cutting method for slitting. This is because the coating area is usually relatively thick, roughly in the range of 100 micrometers to 300 micrometers. Using intermittent cutting will reduce the compression of the coating area by the first cutter 12 and the second cutter 22, thereby reducing the risk of powder falling off the coating area due to compression, breakage of the current collector in the coating area, and current collector deviation to one side in the coating area.

[0054] In addition, depending on the thickness, moisture content, and formula of the incoming electrode sheets, the axial spacing between the first cutter 12 and the second cutter 22 needs to be adjusted according to the actual situation to ensure that the slitting quality is in the best condition.

[0055] In some alternative embodiments, the first cutter assembly 10 further includes an elastic element 15, which is mounted on the first cutter shaft 11 and is used to provide an elastic force that drives the first cutter 12, the second adjusting sleeve 14, and the first adjusting sleeve 13 to abut against each other in sequence; the second adjusting sleeve 14 rotates relative to the first adjusting sleeve 13, and the first cutter 12 moves along the axial direction of the first cutter shaft 11 under the action of the elastic force to adjust the axial distance between the first cutter 12 and the second cutter 22.

[0056] As an example, the elastic element 15 can be a torsion spring, a disc compression spring, etc. Taking the elastic element 15 as a disc compression spring as an example, the elastic element 15 is sleeved on the first cutter shaft 11 to facilitate the installation of the elastic element 15.

[0057] When the second adjusting sleeve 14 rotates relative to the first adjusting sleeve 13 and, under the action of the first adjusting sleeve 13, drives the first cutter 12 to move along the axial direction of the first cutter shaft 11, the rotation direction of the second adjusting sleeve 14 is the first circumferential direction of the first cutter shaft 11, and the second adjusting sleeve 14, under the action of the first adjusting sleeve 13, drives the first cutter 12 to move along the first axial direction of the first cutter shaft 11. Taking Figure 1 as an example, the first axial direction is the X direction from left to right; taking Figure 3 as an example, the first circumferential direction is the counterclockwise M direction.

[0058] When the second adjusting sleeve 14 rotates relative to the first adjusting sleeve 13, and the first cutter 12 moves along the axial direction of the first cutter shaft 11 under the action of elastic force, the rotation direction of the second adjusting sleeve 14 is the second circumferential direction of the first cutter shaft 11, and the first cutter 12 moves along the second axial direction of the first cutter shaft 11 under the action of elastic force. The first circumferential direction is opposite to the second circumferential direction, and the first axial direction is opposite to the second axial direction. Taking Figure 1 as an example, the second axial direction is the Y direction from right to left; taking Figure 3 as an example, the second circumferential direction is the clockwise N direction.

[0059] When the second adjusting sleeve 14 rotates relative to the first adjusting sleeve 13 and drives the first cutter 12 to move along the axial direction of the first cutter shaft 11 under the action of the first adjusting sleeve 13, the total length between the first adjusting sleeve 13 and the second adjusting sleeve 14 gradually increases. When the second adjusting sleeve 14 rotates relative to the first adjusting sleeve 13 and the first cutter 12 moves along the axial direction of the first cutter shaft 11 under the action of the elastic member 15, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 gradually decreases. Both of these methods can achieve the adjustment of the axial distance between the first cutter 12 and the second cutter 22.

[0060] Taking the example in Figure 1 where the first cutter 12 is always located to the left of the second cutter 22, when the second adjusting sleeve 14 rotates along the first circumferential direction and, under the action of the first adjusting sleeve 13, drives the first cutter 12 to move along the first axial direction, the total length between the first adjusting sleeve 13 and the second adjusting sleeve 14 gradually increases, but the first cutter 12 gradually moves closer to the second cutter 22, so that the axial distance between the first cutter 12 and the second cutter 22 gradually decreases. During this process, the elastic element 15 is compressed, and the elastic force further increases. When the second adjusting sleeve 14 rotates along the second circumferential direction and, under the action of the elastic element 15, the first cutter 12 moves along the second axial direction of the first cutter shaft 11, the total length between the first adjusting sleeve 13 and the second adjusting sleeve 14 gradually decreases, but the first cutter 12 gradually moves away from the second cutter 22, so that the axial distance between the first cutter 12 and the second cutter 22 gradually increases. During this process, the elastic element 15 releases its elastic force, and the elastic force of the elastic element 15 gradually decreases.

[0061] Of course, in other embodiments, the first cutter 12 may always be located to the right of the second cutter 22. In this embodiment, when the second adjusting sleeve 14 rotates along the first circumferential direction and the second adjusting sleeve 14 drives the first cutter 12 to move along the first axial direction under the action of the first adjusting sleeve 13, the total length between the first adjusting sleeve 13 and the second adjusting sleeve 14 gradually increases, but the first cutter 12 gradually moves away from the second cutter 22, so that the axial distance between the first cutter 12 and the second cutter 22 gradually increases. When the second adjusting sleeve 14 rotates along the second circumferential direction and the first cutter 12 moves along the second axial direction of the first cutter shaft 11 under the action of the elastic member 15, the total length between the first adjusting sleeve 13 and the second adjusting sleeve 14 gradually decreases, but the first cutter 12 gradually moves closer to the second cutter 22, so that the axial distance between the first cutter 12 and the second cutter 22 gradually decreases.

[0062] In this application, by designing the elastic element 15, on the one hand, it can ensure that the first adjusting sleeve 13, the second adjusting sleeve 14 and the first cutter 12 can be pressed together in sequence, and the second adjusting sleeve 14 and the first cutter 12 have good stability and high adjustment accuracy, which is conducive to improving the slitting quality. On the other hand, the elastic element 15, in cooperation with the first adjusting sleeve 13, can also drive the second adjusting sleeve 14 and the first cutter 12 to move synchronously, so as to realize the adjustment of the axial distance between the first cutter 12 and the second cutter 22, which has high adjustment flexibility, convenient adjustment and wide applicability.

[0063] In some alternative embodiments, the first cutter assembly 10 further includes a mounting nut 16, which is disposed on the side of the first cutter 12 facing away from the second adjusting sleeve 14, and an elastic member 15 abuts against the first cutter 12 and the mounting nut 16. Alternatively, the first cutter assembly 10 includes a mounting nut 16 and a first limiting sleeve 17, which are disposed on the side of the first cutter 12 facing away from the second adjusting sleeve 14, with the mounting nut 16 being away from the first cutter 12 relative to the first limiting sleeve 17, and the elastic member 15 abutting against the first limiting sleeve 17 and the mounting nut 16.

[0064] The mounting nut 16 is sleeved on the first cutter shaft 11, and the mounting nut 16 is screwed to the first cutter shaft 11 to limit other components on the first cutter shaft 11 except for the mounting nut 16 along the axial direction of the first cutter shaft 11. For example, the mounting nut 16 is screwed to the first cutter shaft 11 to limit the first adjusting sleeve 13, the second adjusting sleeve 14, the first cutter 12, the first limiting sleeve 17, and the elastic element 15 along the axial direction of the first cutter shaft 11, so that the first adjusting sleeve 13, the second adjusting sleeve 14, the first cutter 12, the first limiting sleeve 17, and the elastic element 15 can be in close contact in sequence, thereby improving the accuracy of the axial distance adjustment between the first cutter 12 and the second cutter 22.

[0065] In some alternative embodiments, the first cutter assembly 10 further includes a second limiting spacer 18, which is mounted on the first cutter shaft 11 and abuts against the side of the first adjusting spacer 13 facing away from the second adjusting spacer 14.

[0066] As an example, the first limiting spacer 17 and the second limiting spacer 18 are fitted onto the first cutter shaft 11.

[0067] As an example, the first cutter shaft 11 includes a first shaft portion 111 and a first limiting portion 112 disposed at one end of the first shaft portion 111 and protruding from the peripheral side of the first shaft portion 111. A second limiting sleeve 18, a first adjusting sleeve 13, a second adjusting sleeve 14, a first cutter 12, a first limiting sleeve 17, an elastic element 15, and a mounting nut 16 are sequentially arranged on the first shaft portion 111. The second limiting sleeve 18 abuts against the first limiting portion 112, and the mounting nut 16 abuts against the elastic element 15, so as to limit the second limiting sleeve 18, the first adjusting sleeve 13, the second adjusting sleeve 14, the first cutter 12, the first limiting sleeve 17, and the elastic element 15 between the first limiting portion 112 and the mounting nut 16. When the position of the mounting nut 16 on the first shaft 111 changes, the tightness of the second limiting spacer 18, the first adjusting spacer 13, the second adjusting spacer 14, the first cutter 12, the first limiting spacer 17 and the elastic member 15 also changes accordingly.

[0068] In some optional embodiments, the second cutter assembly 20 further includes a third limiting sleeve 23 and a fourth limiting sleeve 24, both of which are disposed on the second cutter shaft 21, and are used to jointly limit the second cutter 22 to prevent the second cutter 22 from sliding along the axial direction of the second cutter shaft 21.

[0069] As an example, the third limiting sleeve 23 and the fourth limiting sleeve 24 are fitted onto the second cutter shaft 21.

[0070] In some alternative embodiments, the second cutter assembly 20 further includes a locking nut 25, which is disposed on the side of the fourth limiting spacer 24 facing away from the third limiting spacer 23. The locking nut 25 limits the third limiting spacer 23, the second cutter 22 and the fourth limiting spacer 24 along the axial direction of the second cutting shaft 21 by being screwed to the second cutting shaft 21.

[0071] As an example, the second cutter shaft 21 includes a second shaft portion 211 and a second limiting portion 212 disposed at one end of the second shaft portion 211 and protruding from the peripheral side of the second shaft portion 211. A third limiting spacer 23, a second cutter 22, a fourth limiting spacer 24, and a locking nut 25 are sequentially arranged on the second shaft portion 211, with the third limiting spacer 23 abutting against the second limiting portion 212 and the locking nut 25 abutting against the fourth limiting spacer 24, thereby limiting the third limiting spacer 23, the second cutter 22, and the fourth limiting spacer 24 between the second limiting portion 212 and the locking nut 25. When the position of the locking nut 25 on the second shaft portion 211 changes, the tightness of the third limiting spacer 23, the second cutter 22, and the fourth limiting spacer 24 also changes accordingly.

[0072] In some alternative embodiments, at least one of the first adjusting sleeve 13 and the second adjusting sleeve 14 has an insertion hole 133 on its peripheral side surface. The insertion hole 133 is used for inserting an operating tool that rotates the first adjusting sleeve 13 or the second adjusting sleeve 14 to which it is located.

[0073] Taking the example that both the first adjusting sleeve 13 and the second adjusting sleeve 14 have insertion holes 133, in actual operation, two operating tools are inserted into the insertion holes 133 of the first adjusting sleeve 13 and the second adjusting sleeve 14 respectively. Then, the first adjusting sleeve 13 is fixed by one of the operating tools. Then, the second adjusting sleeve 14 is rotated by the operating tool so that the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 changes, thereby realizing the adjustment of the axial distance between the first cutter 12 and the second cutter 22.

[0074] The design of the socket 133 makes it convenient for the operator to use operating tools to rotate the first adjusting sleeve 13 or the second adjusting sleeve 14, thus improving the ease of operation.

[0075] In some optional embodiments, the first adjusting sleeve 13 and the second adjusting sleeve 14 have a plurality of spaced-apart insertion holes 133 on their peripheral surfaces. Taking the operation of the second adjusting sleeve 14 to rotate as an example, when the operator rotates the tool and the second adjusting sleeve 14 to a certain angle and it is inconvenient for the operator to apply force, the operator can remove the tool from the original insertion hole 133 and insert the tool into another insertion hole 133 of the second adjusting sleeve 14 to facilitate the continued rotation of the second adjusting sleeve 14 in subsequent operations.

[0076] In some alternative embodiments, both the first adjusting sleeve 13 and the second adjusting sleeve 14 are provided with circumferential angle scale lines 134 on their peripheral surfaces.

[0077] For example, taking a helical pitch of 0.6 mm as an example, the total length change of the first adjusting sleeve 13 and the second adjusting sleeve 14 is also 0.6 mm. If 120 graduations are evenly distributed on the circumferential surfaces of both the first adjusting sleeve 13 and the second adjusting sleeve 14, then rotating the first adjusting sleeve 13 or the second adjusting sleeve 14 by one division results in a total length change of 0.005 mm for the first adjusting sleeve 13 and the second adjusting sleeve 14. When the first adjusting sleeve or the second adjusting sleeve rotates, the total length change of the first adjusting sleeve 13 and the second adjusting sleeve 14 can be calculated by the number of divisions rotated by the first adjusting sleeve or the second adjusting sleeve, thereby knowing the adjustment amount of the axial distance between the first cutter 12 and the second cutter 22, which is convenient for user use.

[0078] Referring to Figure 4, when the slitting cutter 100 is in its initial state, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 is at its minimum, which is 12.19 mm. When the second adjusting sleeve 14 rotates one full revolution relative to the first adjusting sleeve 13 in the first circumferential direction, that is, when the rotation angle is 360°, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 reaches its maximum, which is 12.79 mm.

[0079] Please refer again to Figures 1 to 3. This application also provides a slitting device 1000, which includes a blade holder 200 and a slitting blade 100 as described in any of the above claims. The first cutting blade assembly 10 and the second cutting blade assembly 20 are both mounted on the blade holder 200.

[0080] As an example, the tool holder 200 includes a base plate 210, a first tool holder 220 and a second tool holder 230. The first tool holder 220 and the second tool holder 230 are disposed on the base plate 210. The first cutter shaft 11 is mounted on the first tool holder 220 to realize the installation of the first cutting blade assembly 10. The second cutter shaft 21 is mounted on the second tool holder 230 to realize the installation of the second cutting blade assembly 20.

[0081] In some embodiments, the slitting device 1000 further includes a first driving member and a second driving member. The first driving member is connected to the first cutter shaft 11 and is used to drive the first cutter shaft 11 to rotate. The second driving member is connected to the second cutter shaft 21 and is used to drive the second cutter shaft 21 to rotate, thereby achieving the purpose of rotating and cutting the substrate.

[0082] The aforementioned slitting cutter 100 and slitting device 1000, with the first adjusting sleeve 13 and the second adjusting sleeve 14 abutting each other via two helical surfaces with opposite directions of rotation and capable of fitting together, allow the second adjusting sleeve 14 to rotate relative to the first adjusting sleeve 13. As a fixed position on the second helical surface 141 continuously contacts a position on the first helical surface 131 with an increasing axial height, the total length of the first adjusting sleeve 13 and the second adjusting sleeve 14 in the axial direction of the first cutter shaft 11 gradually increases. This allows the second adjusting sleeve 14 to drive the first cutter 12 to move axially along the first cutter shaft 11 under the action of the first adjusting sleeve 13, thereby adjusting the axial distance between the first cutter 12 and the second cutter 22 to adapt to different slitting requirements. Since this adjustment method does not require disassembly or replacement of components on the first cutter assembly 10, it is simple and time-saving to operate, highly efficient, and has a low manufacturing cost for the slitting cutter 100.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A slitting tool, characterized in that, The slitting tool includes: The first cutting blade assembly (10) includes a first cutting shaft (11), and a first adjusting sleeve (13), a second adjusting sleeve (14) and a first cutting blade (12) arranged sequentially and abutting each other along the axial direction of the first cutting shaft (11). The first adjusting sleeve (13) and the second adjusting sleeve (14) abut each other through two spiral surfaces with opposite directions of rotation and fit together. The second cutting blade assembly (20) includes a second cutting blade (22); The second adjusting sleeve (14) can rotate relative to the first adjusting sleeve (13) and, under the action of the first adjusting sleeve (13), drive the first cutter (12) to move along the axial direction of the first cutter shaft (11) to adjust the axial distance between the first cutter (12) and the second cutter (22).

2. The slitting tool according to claim 1, characterized in that, The first adjusting sleeve (13) has a first helical surface (131), and the first helical surface (131) has a first lowest position with the lowest axial height, a first highest position with the highest axial height, and a first intermediate position with the axial height between the first lowest position and the first highest position; The second adjusting sleeve (14) has a second helical surface (141), the first helical surface (131) abuts against the second helical surface (141), and the second helical surface (141) has a second lowest position with the lowest axial height, a second highest position with the highest axial height, and a second intermediate position with the axial height between the second lowest position and the second highest position. The cutting tool has an initial state in which the second lowest position contacts the first highest position and the second highest position contacts the first lowest position, and an adjustment state in which the second highest position contacts the first intermediate position or the first highest position and the second lowest position is spaced apart from the first spiral surface (131).

3. The slitting tool according to claim 1, characterized in that, The first cutter assembly (10) further includes an elastic element (15), which is mounted on the first cutter shaft (11) and is used to provide an elastic force that drives the first cutter (12), the second adjusting sleeve (14) and the first adjusting sleeve (13) to abut against each other in sequence; The second adjusting sleeve (14) rotates relative to the first adjusting sleeve (13), and the first cutter (12) moves along the axial direction of the first cutter shaft (11) under the action of the elastic force, so as to adjust the axial distance between the first cutter (12) and the second cutter (22).

4. The slitting tool according to claim 3, characterized in that, The elastic element (15) is a disc compression spring, and the elastic element (15) is sleeved on the first cutter shaft (11).

5. The slitting tool according to claim 3, characterized in that, The first cutter assembly (10) further includes a mounting nut (16), which is disposed on the side of the first cutter (12) facing away from the second adjusting sleeve (14), and the elastic member (15) abuts between the first cutter (12) and the mounting nut (16).

6. The slitting tool according to claim 3, characterized in that, The first cutter assembly (10) includes a mounting nut (16) and a first limiting spacer (17). The first limiting spacer (17) and the mounting nut (16) are disposed on the side of the first cutter (12) facing away from the second adjusting spacer (14), and the mounting nut (16) is away from the first cutter (12) relative to the first limiting spacer (17). The elastic member (15) abuts between the first limiting spacer (17) and the mounting nut (16).

7. The slitting tool according to claim 1, characterized in that, The first cutter assembly (10) further includes a second limiting sleeve (18), which is disposed on the first cutter shaft (11) and abuts against the side of the first adjusting sleeve (13) opposite to the second adjusting sleeve (14).

8. The slitting tool according to claim 7, characterized in that, The first cutter shaft (11) includes a first shaft portion (111) and a first limiting portion (112) disposed at one end of the first shaft portion (111) and protruding from the peripheral side surface of the first shaft portion (111). The second limiting sleeve (18), the first adjusting sleeve (13), the second adjusting sleeve (14) and the first cutter (12) are sequentially arranged on the first shaft portion (111), and the second limiting sleeve (18) abuts against the first limiting portion (112).

9. The slitting tool according to claim 1, characterized in that, At least one of the first adjusting sleeve (13) and the second adjusting sleeve (14) has an insertion hole (133) on its peripheral side surface. The insertion hole (133) is used for inserting an operating tool that rotates the first adjusting sleeve (13) or the second adjusting sleeve (14) to which it is located.

10. The slitting tool according to claim 9, characterized in that, The first adjusting sleeve (13) and the second adjusting sleeve (14) each have a plurality of spaced-apart insertion holes (133) on their peripheral surfaces.

11. The slitting tool according to claim 1, characterized in that, Both the first adjusting sleeve (13) and the second adjusting sleeve (14) have circumferential angle scale lines (134) on their circumferential surfaces.

12. The slitting tool according to claim 1, characterized in that, The second cutter assembly (20) further includes a second cutter shaft (21), a third limiting sleeve (23), and a fourth limiting sleeve (24). The second cutter (22), the third limiting sleeve (23), and the fourth limiting sleeve (24) are all disposed on the second cutter shaft (21), and the third limiting sleeve (23) and the fourth limiting sleeve (24) are used to jointly limit the second cutter (22).

13. The slitting tool according to claim 12, characterized in that, The second cutter assembly (20) further includes a locking nut (25), which is disposed on the side of the fourth limiting spacer (24) facing away from the third limiting spacer (23). The locking nut (25) limits the third limiting spacer (23), the second cutter (22) and the fourth limiting spacer (24) along the axial direction of the second cutting shaft (21) by being screwed to the second cutting shaft (21).

14. The slitting tool according to claim 13, characterized in that, The second cutter shaft (21) includes a second shaft portion (211) and a second limiting portion (212) disposed at one end of the second shaft portion (211) and protruding from the peripheral side of the second shaft portion (211). The third limiting sleeve (23), the second cutter (22), the fourth limiting sleeve (24) and the locking nut (25) are sequentially arranged on the second shaft portion (211), and the third limiting sleeve (23) abuts against the second limiting portion (212), and the locking nut (25) abuts against the fourth limiting sleeve (24).

15. The slitting tool according to claim 1, characterized in that, At least the first cutter (12) is a circular cutter, and the first cutter (12) is sleeved on the first cutter shaft (11).

16. The slitting tool according to claim 1, characterized in that, The first cutter (12) is perpendicular to the first cutter axis (11); The second cutter assembly (20) further includes a second cutter shaft (21), which is parallel to the first cutter shaft (11), and the second cutter (22) is mounted on the second cutter shaft (21) and is perpendicular to the second cutter shaft (21).

17. A slitting device, characterized in that, The slitting device includes: Tool holder (200); and As described in any one of claims 1 to 16, the first cutter assembly (10) and the second cutter assembly (20) are both mounted on the cutter holder (200).

18. The slitting apparatus according to claim 17, characterized in that, The slitting device further includes a first driving member and a second driving member. The first driving member is connected to the first cutter shaft (11) and is used to drive the first cutter shaft (11) to rotate. The second driving member is connected to the second cutter shaft (21) and is used to drive the second cutter shaft (21) to rotate.

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