Cutting device

Abstract

The application discloses a cutting device, and belongs to the technical field of cutting. The cutting device comprises a fixing assembly, a supporting piece and a cutter. The fixing assembly comprises a cutting gap. The supporting piece is arranged at least partially in the cutting gap to support a pole piece. At least part of the cutter is arranged in the cutting gap to cut the pole piece supported by the supporting piece. The supporting piece is arranged to fill the cutting gap in the fixing assembly, so that the overhanging area of the pole piece is reduced, the probability of burrs or flash on the cutting surface caused by the vibration of the pole piece during cutting is reduced, and the yield of the pole piece is improved.

Description

Technical Field

[0001] This application relates to the field of slitting technology, and more particularly to a cutting device. Background Technology

[0002] Different battery models have different process requirements for electrode film width. Currently, the industry mainly achieves a fixed width by fixing the upper and lower slitting components.

[0003] The lower slitting component structure provided in the related technology is not reasonably designed, which makes it easy for defects such as burrs and cracks to occur on the cutting surface when cutting the electrode sheet. Utility Model Content

[0004] This application provides a cutting device that improves the yield of the cut electrode sheets, thereby at least partially solving the above-mentioned technical problems.

[0005] To achieve the above objectives, this application provides a cutting device, comprising:

[0006] The fixing component includes a cutting gap;

[0007] A support member, at least partially disposed within the cutting gap, for supporting the electrode sheet; and,

[0008] A cutter, at least a portion of which is located within the cutting gap, is used to cut the electrode sheet supported by the support member.

[0009] Optionally, the cutter includes:

[0010] A first cutting blade, wherein the first cutting blade portion is disposed in the cutting gap; and,

[0011] The second cutter is disposed within the cutting gap and is correspondingly disposed to the first cutter to cooperate with the first cutter in cutting the electrode sheet supported by the support member.

[0012] By using the cooperation of the first and second cutters, the shearing force between them is used to cut the electrode sheet. Compared with a single cutter, this improves the cutting efficiency of the electrode sheet and reduces the probability of burrs or flash on the cut surface of the electrode sheet.

[0013] Optionally, the distance between the support and the first cutter is greater than or equal to 5 mm and less than or equal to 12 mm along a direction perpendicular to the plane where the first cutter is located.

[0014] Therefore, this invention sets the distance between the support and the first cutter to be greater than or equal to 5mm and less than or equal to 12mm, thereby reducing the probability of the electrode sheet denting, bending or shifting, while also reducing the precision requirements of the support and the first cutter and saving production costs.

[0015] Optionally, the cutting device further includes an abutment member, which is sandwiched between the second cutter and the support member, and the abutment member is spaced apart from the first cutter.

[0016] By setting an abutment member to hold the second cutter between the second cutter and the support member, and spaced apart from the first cutter, the second cutter can be firmly fixed by the first fixing member and the support member without affecting the normal use of the first cutter.

[0017] Optionally, the cross-sectional area of ​​the abutment gradually decreases along the direction from the first fixing member toward the second fixing member.

[0018] Based on this, the manufacturing cost of the abutment can be reduced. At the same time, the contact area between the abutment and the second cutter is larger, which can improve the stability of the second cutter.

[0019] Optionally, the fixing component includes a first fixing member and a second fixing member, the first fixing member and the second fixing member being spaced apart to form the cutting gap between the first fixing member and the second fixing member.

[0020] The first and second fixing members are used to fix the second cutter, and a cutting gap is formed between the first and second fixing members, so that the first cutter can extend into the cutting gap to cooperate with the second cutter to cut the electrode sheet.

[0021] Optionally, the cutting device further includes a first mounting shaft, and the first fixing member, the second cutter, the support member and the second fixing member are sleeved on the first mounting shaft.

[0022] Based on this, the first mounting shaft provides support and a unified axial positioning reference, ensuring that the first fixing member, the second cutter, the support member, and the second fixing member can be coaxially arranged, thereby improving cutting accuracy.

[0023] Optionally, the cutting device further includes a third fixing member and a fourth fixing member, which are disposed on opposite sides of the first cutter to clamp and fix the first cutter.

[0024] Based on this, the third and fourth fixing members clamp the first cutter to reduce the probability of vibration or displacement of the first cutter during use, thereby improving cutting accuracy and the yield of electrode sheets.

[0025] Optionally, the cutting device further includes a mounting member extending along the third fixing member toward the fourth fixing member, the third fixing member being threadedly connected to the mounting member so that the third fixing member can reciprocate along the direction from the third fixing member toward the fourth fixing member.

[0026] The threaded connection allows the third fixing member to reciprocate, and the distance between the third and fourth fixing members can be flexibly adjusted to adapt to different types of first cutters and meet different electrode cutting requirements.

[0027] Optionally, the mounting component includes a threaded portion that extends along the third fixing member toward the fourth fixing member and is threadedly connected to the third fixing member; the length of the threaded portion is greater than or equal to 20 mm and less than or equal to 50 mm.

[0028] By setting the length of the threaded portion to be greater than or equal to 20 mm and less than or equal to 50 mm, the third fastener can be retracted to provide sufficient space for the replacement, cleaning, or maintenance of the first cutter, while avoiding taking up too much space.

[0029] Optionally, the mounting component further includes a limiting portion located on the side of the first cutter away from the third fixing member, and the limiting portion is connected to the threaded portion; the fourth fixing member abuts between the limiting portion and the first cutter to fix the first cutter.

[0030] The limiting part also serves to fix the first cutter. By setting the limiting part together with the third and fourth fixing parts to clamp the first cutter, the stability of the first cutter is further improved. Moreover, the limiting part and the threaded part are connected, so the first cutter can be fixed by simply installing the fourth fixing part, the first cutter and the third fixing part on the mounting part in sequence. This simplifies the installation and locking process of the first cutter and improves the cutting efficiency of the electrode sheet.

[0031] Optionally, the limiting part is provided with a first inclined surface, which is inclined to each other with the third fixing member in the direction of the fourth fixing member;

[0032] The fourth fastener includes a buffer washer, and the first inclined surface abuts against the buffer washer.

[0033] Based on this, by setting the first inclined surface, when the third fixing member presses against the first cutter, the buffer washer can deform in the direction of the first inclined surface, which can ensure the stability of the first cutter position while avoiding the first cutter being tightened too much, thereby reducing the probability of the first cutter being damaged during installation.

[0034] Optionally, the cutting device further includes a second mounting shaft, on which the third fixing member, the first cutter, the mounting member, and the fourth fixing member are all sleeved. Based on this, the second mounting shaft provides support and a unified axial positioning reference, ensuring that the third fixing member, the first cutter, the mounting member, and the fourth fixing member can be coaxially arranged, thereby improving cutting accuracy.

[0035] Optionally, the inner circumferential surface of the mounting component includes a second inclined surface, which is inclined to the axis of the second mounting shaft;

[0036] The cutting device further includes a centering member, which is sleeved on the second mounting shaft. The outer peripheral surface of the centering member is provided with a third inclined surface. The centering member is sandwiched between the second inclined surface and the second mounting shaft, and the third inclined surface abuts against the second inclined surface to fix the mounting member and the centering member to the second mounting shaft.

[0037] The mounting component has a second inclined surface, and the centering component has a third inclined surface. Through the interference fit between these two inclined surfaces, a stable connection is achieved between the mounting component, the centering component, and the second mounting shaft.

[0038] Optionally, the mounting component is provided with a first connecting hole, and the centering component is provided with a second connecting hole. The mounting component and the centering component are fixedly connected through the first connecting hole and the second connecting hole. Based on this, the mounting component and the centering component can be further connected by bolts or other means to ensure the stability of their connection, thereby improving the stability of the first cutter during cutting.

[0039] Optionally, the outer peripheral surface of the third fastener is provided with scale markings, which are used to indicate the position of the third fastener.

[0040] By setting a third fixing member with scale markings, when the third fixing member is rotated, the threaded drive causes the third fixing member to move along the mounting part, and the scale markings on the third fixing member also change accordingly, making it easy for the user to confirm the specific position of the third fixing member. This allows for targeted adjustment of the position of the first cutter, improving the accuracy of cutting.

[0041] Optionally, the cutting device further includes an indicator, which is disposed corresponding to the third fixing member and has indicator markings to indicate different scale markings. This allows the user to more easily identify the scale markings on the third fixing member, thereby further clarifying the position of the third fixing member.

[0042] In the cutting device of this application embodiment, by setting a support member to fill the cutting gap in the fixing component, the suspended area of ​​the electrode sheet is reduced, the probability of burrs or flash appearing on the cut surface due to electrode sheet vibration during cutting is reduced, and the yield of the electrode sheet is improved.

[0043] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0046] Figure 1 This is a schematic diagram of the overall structure of the cutting device provided in an exemplary embodiment of this disclosure;

[0047] Figure 2 This is a front view of the cutting device provided in an exemplary embodiment of this disclosure;

[0048] Figure 3 This is a cross-sectional view of the cutting apparatus provided in an exemplary embodiment of this disclosure;

[0049] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0050] Figure 5 This is an exploded view of a portion of the structure of the cutting device provided in an exemplary embodiment of this disclosure.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Cutting device;

[0053] 11. First fixing member; 12. Second fixing member; 13. Support member; 14. First cutter; 15. Second cutter; 16. Abutment member; 17. First mounting shaft;

[0054] 18. Third fastener; 181. Scale markings;

[0055] 19. Fourth fastener;

[0056] 20. Mounting component; 201. Threaded part; 202. Limiting part; 2021. First inclined surface; 203. Second inclined surface; 204. First connecting hole;

[0057] 21. Second mounting shaft;

[0058] 22. Centering component; 221. Third inclined surface; 222. Second connecting hole;

[0059] 23. Indicator. Detailed Implementation

[0060] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0061] This application provides a cutting device 1, please refer to... Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the cutting device 1 provided in an embodiment of this application.

[0062] A cutting device 1 includes a fixing component, a support member 13, and a cutter. The fixing component includes a cutting gap. The support member 13 is at least partially disposed within the cutting gap for supporting an electrode sheet. At least part of the cutter is disposed within the cutting gap for cutting the electrode sheet supported by the support member 13.

[0063] The fixing component serves to hold the cutter in place and has a cutting gap, allowing the cutter to extend into the gap and cut the electrode sheet. To prevent the electrode sheet from concave, bending, or shifting during cutting, which would reduce cutting quality, a support member 13 is also provided within the cutting gap in this embodiment of the invention. This provides further support for the electrode sheet, ensuring sufficient tension during cutting and thus improving the flatness of the cut surface.

[0064] This invention reduces the suspended area of ​​the electrode by setting a support member 13 to fill the cutting gap in the fixing component, thereby reducing the probability of burrs or flash on the cut surface caused by electrode vibration during cutting and improving the yield of electrode products.

[0065] In some alternative embodiments, the support member 13 is made of urethane. Urethane has a low compression set and wear rate, and can withstand temperatures above 100°C, which can significantly improve the stability of the cutting device 1 in this invention.

[0066] In some embodiments, refer to Figure 1 and Figure 2 The cutter includes a first cutter 14 and a second cutter 15; the first cutter 14 is partially disposed in the cutting gap; the second cutter 15 is disposed in the cutting gap and is correspondingly disposed to the first cutter 14, so as to cooperate with the first cutter 14 to cut the electrode sheet supported by the support member 13.

[0067] In this embodiment, the first cutter 14 and the second cutter 15 work together to cut the electrode sheet using the shearing force between them. Compared with a single cutter, this improves the cutting efficiency of the electrode sheet and reduces the probability of burrs or flash on the cut surface of the electrode sheet.

[0068] In some embodiments, the distance between the support member 13 and the first cutter 14 is greater than or equal to 5 mm and less than or equal to 12 mm along a direction perpendicular to the plane where the first cutter 14 is located.

[0069] Along the direction perpendicular to the plane where the first cutter 14 is located, if the distance between the support member 13 and the first cutter 14 is less than 5mm, the probability of interference between the support member 13 and the first cutter 14 is too high, and the installation accuracy requirements for the support member 13 and the first cutter 14 are high, resulting in increased manufacturing costs; if the distance between the support member 13 and the first cutter 14 is greater than 12mm, the improvement effect on the electrode cutting surface is poor.

[0070] Therefore, the present invention sets the distance between the support member 13 and the first cutter 14 to be greater than or equal to 5mm and less than or equal to 12mm. For example, it can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, or 12mm. This reduces the probability of the electrode sheet denting, bending, or shifting, while also reducing the precision requirements of the support member 13 and the first cutter 14, thus saving production costs.

[0071] In some embodiments, refer to Figure 1 and Figure 2 The cutting device 1 also includes an abutment 16, which is sandwiched between the second cutter 15 and the support member 13, and the abutment 16 is spaced apart from the first cutter 14.

[0072] By setting the abutment member 16 to clamp between the second cutter 15 and the support member 13, and spaced apart from the first cutter 14, the second cutter 15 can be firmly fixed by the first fixing member 11 and the support member 13 without affecting the normal use of the first cutter 14. Furthermore, by adjusting the size of the abutment member 16, the position of the support member 13 can be adjusted, thereby adjusting the relative position between the support member 13 and the first cutter 14, making the cutting device 1 of this invention adaptable to various working environments.

[0073] In some alternative embodiments, the abutment 16 is made of urethane. Urethane has a low compression set and abrasion rate, and can withstand temperatures above 100°C, which can significantly improve the stability of the cutting device 1 in this invention.

[0074] In some embodiments, refer to Figure 1 and Figure 2 Along the direction from the first fixing member 11 toward the second fixing member 12, the cross-sectional area of ​​the abutment member 16 gradually decreases. Based on this, the manufacturing cost of the abutment member 16 can be reduced. At the same time, the contact area between the abutment member 16 and the second cutter 15 is larger, which can improve the stability of the second cutter 15.

[0075] In some embodiments, refer to Figure 1 and Figure 2 The fixing component includes a first fixing member 11 and a second fixing member 12, which are spaced apart to form a cutting gap between them.

[0076] The second cutter 15 is fixed by setting the first fixing member 11 and the second fixing member 12, and a cutting gap is formed between the first fixing member 11 and the second fixing member 12, so that the first cutter 14 can be inserted into the cutting gap to cooperate with the second cutter 15 to cut the electrode sheet.

[0077] In some embodiments, refer to Figure 1 and Figure 2 The cutting device 1 also includes a first mounting shaft 17, on which a first fixing member 11, a second cutter 15, a support member 13, and a second fixing member 12 are fitted. Based on this, the first mounting shaft 17 provides support and a unified axial positioning reference, ensuring that the first fixing member 11, the second cutter 15, the support member 13, and the second fixing member 12 can be coaxially arranged, thus improving cutting accuracy. It is understandable that a driving device can also be provided to drive the first mounting shaft 17 to rotate, thereby driving the second cutter 15 to rotate to achieve the cutting of the electrode sheet.

[0078] In some embodiments, refer to Figure 3 and Figure 4 The cutting device 1 also includes a third fixing member 18 and a fourth fixing member 19, which are disposed on opposite sides of the first cutter 14 to clamp and fix the first cutter 14. Based on this, the third fixing member 18 and the fourth fixing member 19 clamp the first cutter 14 to reduce the probability of vibration or displacement of the first cutter 14 during use, thereby improving cutting accuracy and the yield rate of electrode sheets.

[0079] In some embodiments, refer to Figure 3 and Figure 4The cutting device 1 also includes a mounting member 20, which extends along the third fixing member 18 toward the fourth fixing member 19. The third fixing member 18 is threadedly connected to the mounting member 20 so that the third fixing member 18 can reciprocate along the direction of the third fixing member 18 toward the fourth fixing member 19.

[0080] The threaded connection allows the third fixing member 18 to reciprocate, enabling flexible adjustment of the distance between the third fixing member 18 and the fourth fixing member 19. This adapts to different types of first cutters 14, meeting various electrode cutting requirements. Furthermore, the adjustable third fixing member 18 reduces the difficulty of installing the first cutter 14. Specifically, the position of the third fixing member 18 can be adjusted first to create a larger gap between it and the fourth fixing member 19, facilitating the installation of the first cutter 14. After installation, the position of the third fixing member 18 can be adjusted to clamp the first cutter 14. This simplifies the debugging and maintenance process of the cutting device 1, thereby improving the electrode cutting efficiency.

[0081] In some embodiments, refer to Figures 3 to 5 The mounting component 20 includes a threaded portion 201, which extends along the third fixing member 18 toward the fourth fixing member 19 and is threadedly connected to the third fixing member 18; the length of the threaded portion 201 is greater than or equal to 20 mm and less than or equal to 50 mm.

[0082] If the length of the threaded part 201 is less than 20mm, the threaded part 201 is too short, the third fixing part 18 has limited adjustment position, resulting in a small installation space for the first cutter 14, making replacement and maintenance more difficult; if the length of the threaded part 201 is greater than 50mm, the threaded part 201 is too long, the mounting part 20 occupies too much space, increasing costs.

[0083] Therefore, the length of the threaded part 201 is set to be greater than or equal to 20mm and less than or equal to 50mm. While avoiding taking up too much space, the third fixing member 18 can be moved back to provide sufficient space for the first cutter 14 to be replaced, cleaned or repaired.

[0084] In some embodiments, refer to Figures 3 to 5 The mounting component 20 also includes a limiting part 202, which is located on the side of the first cutter 14 away from the third fixing member 18, and the limiting part 202 is connected to the threaded part 201; the fourth fixing member 19 abuts between the limiting part 202 and the first cutter 14 to fix the first cutter 14.

[0085] The limiting part 202 also serves to fix the first cutter 14. By setting the limiting part 202 together with the third fixing part 18 and the fourth fixing part 19 to clamp the first cutter 14, the stability of the first cutter 14 is further improved. Moreover, the limiting part 202 is connected to the threaded part 201. The first cutter 14 can be fixed simply by installing the fourth fixing part 19, the first cutter 14 and the third fixing part 18 on the mounting part 20 in sequence. This simplifies the installation and locking process of the first cutter 14 and improves the cutting efficiency of the electrode sheet.

[0086] In some embodiments, refer to Figures 3 to 5 The limiting part 202 is provided with a first inclined surface 2021, which is inclined relative to the third fixing member 18 towards the fourth fixing member 19. The fourth fixing member 19 includes a buffer washer, and the first inclined surface 2021 abuts against the buffer washer. Based on this, by providing the first inclined surface 2021, when the third fixing member 18 presses against the first cutter 14, the buffer washer can deform towards the first inclined surface 2021, which can ensure the stability of the position of the first cutter 14 while preventing the first cutter 14 from being tightened too much, thereby reducing the probability of the first cutter 14 being damaged during installation.

[0087] In some embodiments, refer to Figures 3 to 5 The cutting device 1 also includes a second mounting shaft 21, on which the third fixing member 18, the first cutter 14, the mounting member 20, and the fourth fixing member 19 are all fitted. Based on this, the second mounting shaft 21 provides support and a unified axial positioning reference, ensuring that the third fixing member 18, the first cutter 14, the mounting member 20, and the fourth fixing member 19 can be coaxially arranged, thus improving cutting accuracy. It is understandable that a driving device can also be provided to drive the second mounting shaft 21 to rotate, thereby driving the first cutter 14 to rotate to achieve the cutting of the electrode sheet.

[0088] In some embodiments, refer to Figures 3 to 5 The inner circumferential surface of the mounting member 20 includes a second inclined surface 203, which is inclined to the axis of the second mounting shaft 21. The cutting device 1 also includes a centering member 22, which is sleeved on the second mounting shaft 21. The outer circumferential surface of the centering member 22 is provided with a third inclined surface 221. The centering member 22 is sandwiched between the second inclined surface 203 and the second mounting shaft 21, and the third inclined surface 221 and the second inclined surface 203 abut against each other to fix the mounting member 20 and the centering member 22 to the second mounting shaft 21.

[0089] The mounting component 20 is provided with a second inclined surface 203, and the centering component 22 is provided with a third inclined surface 221. Through the interference fit between these two inclined surfaces, a stable connection is achieved between the mounting component 20, the centering component 22, and the second mounting shaft 21. Furthermore, the centering component 22 can be separated from the mounting component 20 by means of tapping or other methods, thereby enabling the disassembly of the mounting component 20 and the centering component 22 for easy replacement, cleaning, or maintenance.

[0090] In some embodiments, refer to Figures 3 to 5 The mounting component 20 is provided with a first connecting hole 204, and the centering component 22 is provided with a second connecting hole 222. The mounting component 20 and the centering component 22 are fixedly connected through the first connecting hole 204 and the second connecting hole 222. Based on this, the mounting component 20 and the centering component 22 can be further connected by means of bolts or other methods to ensure the stability of the connection between the two, thereby improving the stability of the first cutter 14 during cutting.

[0091] In some embodiments, refer to Figures 3 to 5 The outer peripheral surface of the third fastener 18 is provided with a scale mark 181, which is used to indicate the position of the third fastener 18.

[0092] By setting a third fixing member 18 with scale markings 181, when the third fixing member 18 is rotated, the threaded drive causes the third fixing member 18 to move along the mounting member 20, and the scale markings 181 on the third fixing member 18 also change accordingly, making it easy for the user to confirm the specific position of the third fixing member 18. This allows for targeted adjustment of the position of the first cutter 14, improving the accuracy of cutting.

[0093] In some alternative implementations, the scale markings 181 are scale lines of varying lengths, each scale line corresponding to a different distance parameter, making it easy for users to identify.

[0094] In some embodiments, refer to Figures 3 to 5 The cutting device 1 also includes an indicator 23, which is provided corresponding to the third fixing member 18, and the indicator 23 is provided with an indicator mark to indicate different scale marks 181. Based on this, the user can more easily identify the scale marks 181 on the third fixing member 18, thereby further clarifying the position of the third fixing member 18.

[0095] In the description of this application, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0096] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0097] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0098] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A cutting device, characterized in that, include: The fixing component includes a cutting gap; A support member, at least partially disposed within the cutting gap, for supporting the electrode sheet; and, A cutter, at least a portion of which is located within the cutting gap, is used to cut the electrode sheet supported by the support member.

2. The cutting device according to claim 1, characterized in that, The cutter includes: A first cutting blade, wherein the first cutting blade portion is disposed in the cutting gap; and, The second cutter is disposed within the cutting gap and is correspondingly disposed to the first cutter to cooperate with the first cutter in cutting the electrode sheet supported by the support member.

3. The cutting device according to claim 2, characterized in that, Along a direction perpendicular to the plane where the first cutter is located, the distance between the support and the first cutter is greater than or equal to 5 mm and less than or equal to 12 mm.

4. The cutting device according to claim 2, characterized in that, The cutting device further includes an abutment member, which is sandwiched between the second cutter and the support member, and the abutment member is spaced apart from the first cutter.

5. The cutting device according to claim 4, characterized in that, Along the direction away from the second cutter, the cross-sectional area of ​​the abutment gradually decreases.

6. The cutting device according to claim 2, characterized in that, The fixing component includes a first fixing member and a second fixing member, which are spaced apart to form the cutting gap between them.

7. The cutting device according to claim 6, characterized in that, The cutting device further includes a first mounting shaft, and the first fixing member, the second cutter, the support member and the second fixing member are sleeved on the first mounting shaft.

8. The cutting device according to any one of claims 2 to 7, characterized in that, The cutting device further includes a third fixing member and a fourth fixing member, which are disposed on opposite sides of the first cutter to clamp and fix the first cutter.

9. The cutting device according to claim 8, characterized in that, The cutting device further includes a mounting member that extends along the third fixing member toward the fourth fixing member. The third fixing member is threadedly connected to the mounting member so that the third fixing member can reciprocate along the direction from the third fixing member toward the fourth fixing member.

10. The cutting device according to claim 9, characterized in that, The mounting component includes a threaded portion that extends along the direction of the third fixing component toward the fourth fixing component, and the threaded portion is threadedly connected to the third fixing component. The length of the threaded portion is greater than or equal to 20 mm and less than or equal to 50 mm.

11. The cutting device according to claim 10, characterized in that, The mounting component further includes a limiting part, which is located on the side of the first cutter away from the third fixing component, and the limiting part is connected to the threaded part; The fourth fixing member abuts between the limiting part and the first cutter to fix the first cutter.

12. The cutting device according to claim 11, characterized in that, The limiting part is provided with a first inclined surface, and the first inclined surface and the third fixing member are inclined to each other in the direction of the fourth fixing member; The fourth fastener includes a buffer washer, and the first inclined surface abuts against the buffer washer.

13. The cutting device according to claim 9, characterized in that, The cutting device further includes a second mounting shaft, and the third fixing member, the first cutter, the mounting member and the fourth fixing member are all sleeved on the second mounting shaft.

14. The cutting device according to claim 13, characterized in that, The inner circumferential surface of the mounting component includes a second inclined surface, which is inclined to the axis of the second mounting shaft. The cutting device further includes a centering member, which is sleeved on the second mounting shaft, and the outer peripheral surface of the centering member is provided with a third inclined surface; The centering member is sandwiched between the second inclined surface and the second mounting shaft, and the third inclined surface abuts against the second inclined surface to fix the mounting member and the centering member to the second mounting shaft.

15. The cutting device according to claim 14, characterized in that, The mounting component is provided with a first connecting hole, and the centering component is provided with a second connecting hole. The mounting component and the centering component are fixedly connected through the first connecting hole and the second connecting hole.

16. The cutting device according to claim 8, characterized in that, The outer circumferential surface of the third fastener is provided with scale markings, which are used to indicate the position of the third fastener.

17. The cutting device according to claim 16, characterized in that, The cutting device also includes an indicator, which is provided corresponding to the third fixing member, and the indicator is provided with an indicator mark to indicate different scale marks.

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