Cutter switching device

Abstract

The utility model provides a cutter switching device which comprises a cutter mounting seat, a cutter mounting shaft, a cutter, a cutter adjusting arm, a cutter adjusting piece, an adjusting arm air cylinder and a limiting structure. When the angle of the cutter is adjusted, the adjusting arm cylinder is started, and the cylinder shaft extends out to push the cutter adjusting arm to rotate around the cutter mounting shaft; the push pawl is adjusted to push the cutter adjusting piece to drive the cutter mounting shaft to rotate by an angle, so that the cutter is subjected to angle adjustment; the limiting structure limits the rotating angle of the cutter; the air cylinder shaft retracts to drive the cutter adjusting arm to rotate around the direction opposite to the cutter installation shaft, the cutter adjusting arm drives the adjusting push pawl to return, and when the adjusting push pawl returns, the cutter adjusting piece is not driven to act. According to the cutter switching device, by adjusting the angle of the cutter, the situation that the cutter is scrapped due to abrasion of a cutting edge is avoided, the replacement frequency of the cutter is reduced, and the enough cost of the cutter is reduced; the angle adjustment of the cutter is automatic, the operation is simple and convenient, the angle adjustment can be completed in a short time, the downtime of equipment is reduced, and the production efficiency is improved.

Description

Technical Field

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

[0002] An air spring bladder machine is a device used to manufacture air spring bladders. The air spring bladder is the core component of an air spring, typically made of rubber and cord materials, possessing good elasticity and sealing performance. Air springs are widely used in automobiles, rail transportation, industrial equipment, and other fields for shock absorption, support, and height adjustment.

[0003] In the production of air spring bladders, the cutting device plays a crucial role. The cutting device can precisely cut the bladder according to preset parameters and programs, ensuring the bladder's size meets requirements. Furthermore, after the bladder is formed, burrs, flash, and excess material easily accumulate at the edges; the cutting device can precisely remove these, resulting in smooth and neat edges, improving product quality and aesthetics. In terms of production efficiency, the cutting device enables automated cutting, significantly increasing cutting speed compared to manual cutting, and can operate continuously and stably, reducing efficiency losses due to human fatigue, thus meeting the needs of large-scale production. In existing air spring bladder machines, the cutting device relies on the same position to perform the cutting action throughout the entire cutting process. Over time, with the accumulation of cuts, this fixed cutting position will frequently experience wear. Due to continuous high-intensity friction with the material being cut, the cutting edge will gradually become dull, and its sharpness will decrease significantly. Once the cutting blade becomes dull, a new cutting blade must be replaced to ensure the normal production of air spring bladders.

[0004] Therefore, how to design a cutting device that can avoid frequent cutting blade replacement is a technical problem that has not yet been solved in the existing technology. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the technical defect that the cutting device in the prior art always uses the same position to operate during cutting. As the number of cuts increases, the position wears frequently, the cutting edge becomes dull, and the sharpness decreases, so a new cutting device is needed. Thus, a cutting device that can avoid frequent cutting device replacement is provided.

[0006] Therefore, this utility model provides a cutter switching device, comprising:

[0007] The cutter mounting base is hollow and open at both ends;

[0008] A cutter mounting shaft is rotatably mounted inside the cutter mounting base, with its top extending to the outside of the cutter mounting base;

[0009] A cutter is fixedly mounted at the bottom of the cutter mounting shaft, and its position is set at the bottom of the cutter mounting base;

[0010] A cutter adjusting arm is rotatably mounted on the top of the cutter mounting shaft at one end, and an adjusting push claw is fixedly mounted on the cutter adjusting arm;

[0011] A cutter adjustment component is fixedly installed on the top of the cutter mounting shaft. The adjustment pusher is driven by the cutter adjustment arm, which can push the cutter adjustment component to drive the cutter mounting shaft to rotate by an angle, thereby enabling the cutter to adjust its angle.

[0012] An adjusting arm cylinder has a cylinder shaft, which is fixedly connected to the other end of the cutting blade adjusting arm;

[0013] A limiting structure is used to limit the rotation angle of the cutter by limiting the rotation angle of the cutter mounting shaft;

[0014] When adjusting the angle of the cutter, the adjusting arm cylinder is activated, and the cylinder shaft extends to push one end of the cutter adjusting arm to rotate around the cutter mounting shaft; the adjusting pusher pushes the cutter adjusting component to drive the cutter mounting shaft to rotate by an angle, thereby adjusting the angle of the cutter;

[0015] After the cutter is adjusted to the desired angle, the limiting structure limits the rotation angle of the cutter mounting shaft, thereby limiting the rotation angle of the cutter. The cylinder shaft retracts and drives one end of the cutter adjusting arm to rotate in the opposite direction around the cutter mounting shaft. The cutter adjusting arm drives the adjusting push claw back to its original position. When the adjusting push claw returns to its original position, it does not drive the cutter adjusting component to move.

[0016] As a preferred embodiment, the outer circumferential wall of the cutter adjustment component is provided with a pushing tooth groove, one end of the adjustment push claw is connected to the pushing tooth groove, and can push the cutter adjustment component to rotate through the pushing tooth groove, thereby driving the cutter mounting shaft to rotate by an angle, and thus causing the cutter to rotate by an angle;

[0017] The pusher groove has a ratchet structure, and when the adjusting pusher returns to its original position, it can slide out of one of the pusher grooves and enter another adjacent pusher groove.

[0018] As a preferred embodiment, the push tooth grooves are evenly distributed 6 times in the circumferential direction on the cutter adjustment component.

[0019] As a preferred embodiment, it also includes a pusher limiting member, which is fixedly installed on the cutter adjusting arm and abuts against the outer side wall of the adjusting pusher to elastically compress and limit the adjusting pusher.

[0020] As a preferred embodiment, the limiting structure includes:

[0021] A cutter limiting component is fixedly installed on the top of the cutter mounting shaft, and a limiting blind hole is formed on the outer circumference of the component.

[0022] A limiting cylinder, having a limiting shaft, is fixedly installed on the outer wall of the cutter mounting base; the limiting cylinder is elastically matched and inserted into the limiting blind hole through the limiting shaft, thereby limiting the rotation angle of the cutter mounting shaft, and thus limiting the rotation angle of the cutter.

[0023] As a preferred embodiment, six blind holes are evenly distributed circumferentially on the cutter limiting member.

[0024] As a preferred embodiment, the bottom of the cutter mounting base is provided with a cutter mounting position, and the cutter is mounted in the cutter mounting position at an adjustable angle.

[0025] As a preferred embodiment, after the cutter is installed in the cutter mounting position, a portion of the blade extends to the outside of the cutter mounting position.

[0026] As a preferred embodiment, a first bearing is mounted on the top of the cutter mounting shaft, and a first bearing mounting position is provided on the cutter adjusting arm. The first bearing is installed in the first bearing mounting position, so that the cutter adjusting arm is rotatably connected to the cutter mounting shaft.

[0027] As a preferred embodiment, at least one second bearing is mounted on the portion of the cutter mounting shaft located inside the cutter mounting base. The cutter mounting base is provided with a second bearing mounting position, and the second bearing is mounted in the second bearing mounting position, so that the cutter mounting shaft is rotatably mounted in the cutter mounting base.

[0028] The technical solution provided by this utility model has the following advantages:

[0029] This utility model discloses a cutter switching device, comprising a cutter mounting base, a cutter mounting shaft, a cutter, a cutter adjusting arm, a cutter adjusting component, an adjusting arm cylinder, and a limiting structure. The cutter mounting base is hollow and open at both ends. The cutter mounting shaft is rotatably mounted inside the cutter mounting base, with its top extending to the outside of the cutter mounting base. The cutter is fixedly mounted at the bottom of the cutter mounting shaft, positioned at the bottom of the cutter mounting base. One end of the cutter adjusting arm is rotatably fitted onto the top of the cutter mounting shaft, and an adjusting push claw is fixedly mounted on the cutter adjusting arm. The cutter adjusting component is fixedly mounted on the top of the cutter mounting shaft, and the adjusting push claw, driven by the cutter adjusting arm, can push the cutter adjusting component to drive the cutter mounting shaft to rotate by an angle, thereby adjusting the cutter's angle. The adjusting arm cylinder has a cylinder shaft, which is fixedly connected to the other end of the cutter adjusting arm. The limiting structure is used to limit the rotation angle of the cutter by limiting the rotation angle of the cutter mounting shaft.

[0030] If the same cutting position of the cutter is used frequently during the cutting process of air spring bladder, the cutting edge of the cutter will become dull due to wear, which will seriously affect the cutting effect; in order to ensure the cutting quality, the angle of the cutter needs to be readjusted. When adjusting the cutter angle, the adjusting arm cylinder is activated, and the cylinder shaft extends to push one end of the cutter adjusting arm to rotate around the cutter mounting shaft. The adjusting pusher pushes the cutter adjusting component to drive the cutter mounting shaft to rotate, thereby adjusting the cutter angle. After the cutter angle is adjusted, the limiting structure limits the rotation angle of the cutter mounting shaft, thus limiting the cutter rotation angle. When the cutter rotation angle is limited, the cylinder shaft retracts, causing one end of the cutter adjusting arm to rotate in the opposite direction around the cutter mounting shaft. The cutter adjusting arm drives the adjusting pusher back to its original position, without moving the cutter adjusting component. After the adjusting pusher returns to its original position, the cutter can be reused for cutting air spring bladders. If, during subsequent cutting processes, the cutting quality is affected again due to the blade becoming dull, requiring further cutter angle adjustment, simply activate the adjusting arm cylinder again to readjust the cutter angle, ensuring the cutter can continuously guarantee the cutting quality of air spring bladders. The cutting blade switching device of this utility model can prevent the cutting blade from being scrapped due to long-term wear by adjusting the cutting blade angle in a timely manner, thereby reducing the frequency of cutting blade replacement and thus reducing the procurement cost of cutting blades. In addition, the cutting blade angle adjustment process is automated and easy to operate, and the angle adjustment can be completed in a short time, reducing equipment downtime and improving production efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the prior art or specific embodiments of this utility model, the accompanying drawings used in the description of the prior art or specific embodiments are briefly introduced below.

[0032] Figure 1 This is a schematic diagram of the overall structure of the cutting blade switching device of this utility model.

[0033] Figure 2 yes Figure 1 Enlarged structural diagram of part A.

[0034] Figure 3 yes Figure 1 Another stereoscopic view.

[0035] Figure 4 yes Figure 1 A sectional view.

[0036] Figure 5 yes Figure 4 Enlarged structural diagram of section B.

[0037] Reference numerals: 200, adjusting arm cylinder; 201, cutter adjusting arm; 202, cylinder shaft;

[0038] 210. Cutter mounting shaft; 211. Cutter mounting base; 212. Cutter mounting position; 220. Cutter; 230. Adjusting pusher; 231. Cutter adjusting component; 232. Push tooth groove; 240. Pusher limiting component; 250. Limiting blind hole; 251. Limiting cylinder; 252. Limiting shaft; 253. Cutter limiting component; 260. First bearing; 261. First bearing mounting position; 262. Second bearing; 263. Second bearing mounting position. Detailed Implementation

[0039] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0040] It should be noted that the terms "first," "second," etc., in the claims and specification of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process, method, system, product, or device that includes a series of steps or units, not limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0041] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0042] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0043] This embodiment provides a cutter switching device, such as... Figure 1-3 As shown, it includes: a cutter mounting base 211, a cutter mounting shaft 210, a cutter 220, a cutter adjusting arm 201, a cutter adjusting component 231, an adjusting arm cylinder 200, and a limiting structure; wherein, the cutter mounting base 211 is hollow and has openings at both ends; the cutter mounting shaft 210 is rotatably mounted inside the cutter mounting base 211, with its top extending to the outside of the cutter mounting base 211; the cutter 220 is fixedly mounted at the bottom of the cutter mounting shaft 210, and is positioned at the bottom of the cutter mounting base 211; one end of the cutter adjusting arm 201 is rotatably sleeved on the top of the cutter mounting shaft 210, and the cutter adjusting arm 201... An adjusting pusher 230 is fixedly mounted on the entire arm 201; a cutter adjusting component 231 is fixedly mounted on the top of the cutter mounting shaft 210. The adjusting pusher 230 is driven by the cutter adjusting arm 201, which can push the cutter adjusting component 231 to drive the cutter mounting shaft 210 to rotate by an angle, thereby allowing the cutter 220 to adjust its angle; the adjusting arm cylinder 200 has a cylinder shaft 202, which is fixedly connected to the other end of the cutter adjusting arm 201; a limiting structure is used to limit the rotation angle of the cutter mounting shaft 210, thereby limiting the rotation angle of the cutter 220.

[0044] During the cutting of air spring bladders, if the same position of the cutter 220 is frequently used for cutting, the cutting edge of the cutter 200 will become dull due to wear, which will seriously affect the cutting effect. To ensure cutting quality, the angle of the cutter 200 needs to be readjusted. When adjusting the angle of the cutter 200, the adjusting arm cylinder 200 is activated, and the cylinder shaft 202 extends to push one end of the cutter adjusting arm 201 to rotate around the cutter mounting shaft 210; the adjusting pusher 230 pushes the cutter adjusting component 231 to drive the cutter mounting shaft 210 to rotate by an angle, thereby causing the cutter 220 to adjust its angle; after the cutter 220 has adjusted its angle, the limiting structure limits the rotation angle of the cutter mounting shaft 210, thereby limiting the rotation angle of the cutter 220; when the rotation angle of the cutter 220 is limited, the cylinder shaft 202 retracts and drives one end of the cutter adjusting arm 201 to rotate around the cutter mounting shaft 210. Shaft 210 rotates in the opposite direction, causing the cutter adjusting arm 201 to drive the adjusting pusher 230 back to its original position. When the adjusting pusher 230 returns to its original position, it does not drive the cutter adjusting component 231 to move. After the adjusting pusher 230 returns to its original position, the cutter 220 can be reused for cutting air spring bladders. If, during subsequent cutting processes, the cutting quality is again affected by the dulling of the cutter 220's cutting edge, requiring adjustment of the cutter 220's angle, simply restarting the adjusting arm cylinder 200 will complete the readjustment of the cutter 220's angle, ensuring the cutter 220 can continuously guarantee the cutting quality of the air spring bladders. The cutter switching device in this embodiment, by timely adjusting the cutter 220's angle, avoids the cutter 220 from becoming unusable due to long-term wear, reducing the frequency of cutter 220 replacement and thus lowering the procurement cost of the cutter 220. Furthermore, the cutter 220's angle adjustment process is automated, easy to operate, and can complete the angle adjustment in a short time, reducing equipment downtime and improving production efficiency.

[0045] like Figure 2 As shown, the outer circumferential wall of the cutter adjustment component 231 is provided with a push tooth groove 232. One end of the adjustment push claw 230 is connected to the push tooth groove 232 and can push the cutter adjustment component 231 to rotate through the push tooth groove 232, thereby driving the cutter mounting shaft 210 to rotate by an angle, and thus causing the cutter 220 to rotate by an angle. The push tooth groove 232 is a ratchet structure. When the adjustment push claw 230 returns to its original position, it can slide out of one push tooth groove 232 and enter another adjacent push tooth groove 232.

[0046] The push grooves 232 are evenly distributed circumferentially on the cutter adjustment member 231. The six push grooves 232 correspond to the six parts of the cutter 220, so that each part of the cutter 220 can be used in turn during operation, thereby improving the service life of the cutter 220.

[0047] It also includes a pusher limiting member 240, which is fixedly mounted on the cutter adjusting arm 201 and abuts against the outer wall of the adjusting pusher 230 to elastically compress and limit the adjusting pusher 230. The pusher limiting member 240 is used to limit and fix the adjusting pusher 230, so that the adjusting pusher 230 is always engaged with the push tooth groove 232, thereby enabling the angle adjustment of the cutter 220.

[0048] The limiting structure includes a cutter limiting component 253 and a limiting cylinder 251. The cutter limiting component 253 is fixedly installed on the top of the cutter mounting shaft 210, and a limiting blind hole 250 is formed on its outer circumferential wall. The limiting cylinder 251 has a limiting shaft 252, which is fixedly installed on the outer wall of the cutter mounting base 211. The limiting cylinder 251 elastically engages with the limiting blind hole 250 via the limiting shaft 252, thereby limiting the rotation angle of the cutter mounting shaft 210, and consequently limiting the rotation angle of the cutter 220. When limiting the angle of the cutter 220, the limiting cylinder 251 is activated, and the limiting shaft 252 extends and elastically engages with the limiting blind hole 250, thereby limiting the rotation angle of the cutter 220. When the limitation on the angle of the cutter 220 is released, the limiting shaft 252 retracts and separates from the limiting blind hole 250, allowing the cutter 220 to rotate.

[0049] The limiting blind holes 250 are evenly distributed in six directions on the cutter limiting member 253. The six limiting blind holes 250 correspond one-to-one with the six pushing tooth grooves 232. When the cutter 220 rotates, the limiting cylinder 251 matches and inserts into the limiting blind hole 250, thereby limiting the rotation angle of the cutter 220 and ensuring that the cutter 220 remains stable during the cutting process.

[0050] like Figure 3 As shown, the bottom of the cutter mounting base 211 is provided with a cutter mounting position 212, and the cutter 220 is installed in the cutter mounting position 212 at an adjustable angle.

[0051] After the cutter 220 is installed in the cutter mounting position 212, a portion of the blade extends to the outside of the cutter mounting position 212. The portion extending to the outside of the cutter mounting position 212 is one-sixth of the entire cutter 220; after adjusting the rotation angle of the cutter 220, another one-sixth of the cutter 220 extends to the outside of the cutter mounting position 212.

[0052] like Figure 4-5 As shown, a first bearing 260 is mounted on the top of the cutter mounting shaft 210, and a first bearing mounting position 261 is provided on the cutter adjusting arm 201. The first bearing 260 is installed in the first bearing mounting position 261, so that the cutter adjusting arm 201 is rotatably connected to the cutter mounting shaft 210.

[0053] At least one second bearing 262 is mounted on the portion of the cutter mounting shaft 210 located inside the cutter mounting base 211. The cutter mounting base 211 is provided with a second bearing mounting position 263, and the second bearing 262 is mounted in the second bearing mounting position 263, so that the cutter mounting shaft 210 is rotatably mounted in the cutter mounting base 211.

[0054] The cutting blade switching device in this embodiment is used as follows: During the cutting process of the air spring bladder, if the same position of the cutting blade 220 is frequently used for cutting, the cutting edge of the cutting blade 200 will become dull due to wear, which will seriously affect the cutting effect; in order to ensure the cutting quality, the angle of the cutting blade 200 needs to be readjusted. When adjusting the angle of the cutter 200, the limit cylinder 251 is activated to drive the limit shaft 252 to retract, releasing the restriction on the cutter 220; the adjusting arm cylinder 200 is activated, and the cylinder shaft 202 extends to push one end of the cutter adjusting arm 201 to rotate around the cutter mounting shaft 210; the pusher pawl 230 is adjusted to engage with the push tooth groove 232, and pushes the cutter adjusting component 231 to drive the cutter mounting shaft 210 to rotate within the cutter mounting seat 211, thereby causing the other one-sixth of the cutter 220 to extend to the outside of the cutter mounting position 212; after the cutter 220 has finished adjusting its angle, the limit cylinder 251 is activated, and the limit shaft 252 extends and elastically engages with the limit blind hole 250, thereby limiting the rotation of the cutter mounting shaft 210. The angle is adjusted to limit the rotation angle of the cutter 220. When the rotation angle of the cutter 220 is limited, the cylinder shaft 202 retracts and drives one end of the cutter adjusting arm 201 to rotate in the opposite direction around the cutter mounting shaft 210. The cutter adjusting arm 201 drives the adjusting push claw 230 to return to its original position. When the adjusting push claw 230 returns to its original position, it does not drive the cutter adjusting component 231 to move. After the adjusting push claw 230 returns to its original position, the cutter 220 can be used again for cutting air spring bladders. If, during subsequent cutting processes, the cutting quality is affected again due to the dulling of the cutting edge of the cutter 220, and the angle of the cutter 220 needs to be adjusted, the angle of the cutter 220 is adjusted again so that the cutter 220 can continuously ensure the cutting quality of the air spring bladder.

[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this innovative technical solution.

Claims

1. A cutter switching device, characterized by, include: The cutter mounting base (211) is hollow and open at both ends; The cutter mounting shaft (210) is rotatably mounted inside the cutter mounting base (211), with its top extending to the outside of the cutter mounting base (211); The cutter (220) is fixedly installed at the bottom of the cutter mounting shaft (210) and is positioned at the bottom of the cutter mounting base (211); A cutter adjusting arm (201) is rotatably mounted on the top of the cutter mounting shaft (210) at one end, and an adjusting push claw (230) is fixedly mounted on the cutter adjusting arm (201). The cutter adjustment component (231) is fixedly installed on the top of the cutter mounting shaft (210). The adjustment pusher (230) is driven by the cutter adjustment arm (201) and can push the cutter adjustment component (231) to drive the cutter mounting shaft (210) to rotate by an angle, thereby enabling the cutter (220) to adjust its angle. The adjusting arm cylinder (200) has a cylinder shaft (202) which is fixedly connected to the other end of the cutter adjusting arm (201); A limiting structure is used to limit the rotation angle of the cutter (220) by limiting the rotation angle of the cutter mounting shaft (210); When the angle of the cutter (220) is adjusted, the adjusting arm cylinder (200) is activated, and the cylinder shaft (202) extends to push one end of the cutter adjusting arm (201) to rotate around the cutter mounting shaft (210); the adjusting pusher (230) pushes the cutter adjusting component (231) to drive the cutter mounting shaft (210) to rotate by an angle, thereby causing the cutter (220) to adjust its angle; After the cutter (220) has adjusted its angle, the limiting structure limits the rotation angle of the cutter mounting shaft (210), thereby limiting the rotation angle of the cutter (220); the cylinder shaft (202) retracts and drives one end of the cutter adjusting arm (201) to rotate in the opposite direction around the cutter mounting shaft (210), the cutter adjusting arm (201) drives the adjusting push claw (230) to return to its original position, and the adjusting push claw (230) does not drive the cutter adjusting component (231) to move when it returns to its original position.

2. The cutter switching device of claim 1, wherein: The outer circumferential wall of the cutter adjustment component (231) is provided with a push tooth groove (232). One end of the adjustment push claw (230) is connected to the push tooth groove (232) and can push the cutter adjustment component (231) to rotate through the push tooth groove (232), thereby driving the cutter mounting shaft (210) to rotate by an angle, and thus causing the cutter (220) to rotate by an angle. The push groove (232) is a ratchet structure. When the adjusting push claw (230) returns to its original position, it can slide out of one of the push grooves (232) and enter another adjacent push groove (232).

3. The knife switching device of claim 2, wherein: The push tooth groove (232) is evenly provided in six circumferential directions on the cutter adjustment member (231).

4. The cutter switching device of claim 1, wherein: The pushing claw limiting member (240) is fixedly installed on the cutter adjusting arm (201) and abuts against the outer side wall of the adjusting pushing claw (230) to elastically extrude and limit the adjusting pushing claw (230).

5. The knife switching device of claim 1, wherein, The limiting structure comprises: The cutter limiting member (253) is fixedly installed on the top of the cutter mounting shaft (210) and a limiting blind hole (250) is formed in the circumferential outer wall; The limiting cylinder (251) has a limiting shaft (252) and is fixedly installed on the outer wall of the cutter mounting seat (211); the limiting cylinder (251) is elastically matched and inserted with the limiting blind hole (250) through the limiting shaft (252), so as to limit the rotation angle of the cutter mounting shaft (210) and further limit the rotation angle of the cutter (220).

6. The cutter switching device of claim 5, wherein: The limiting blind hole (250) is circumferentially and uniformly formed with six holes on the cutter limiting member (253).

7. The knife switching device of claim 1, wherein: The bottom of the cutter mounting seat (211) is provided with a cutter mounting position (212), and the cutter (220) is adjustably mounted in the cutter mounting position (212).

8. The knife switching device of claim 7, wherein: After the cutter (220) is mounted in the cutter mounting position (212), part of the blade extends to the outside of the cutter mounting position (212).

9. The knife switching device of claim 1, wherein: The top of the cutter mounting shaft (210) is provided with a first bearing (260), the cutter adjusting arm (201) is provided with a first bearing mounting position (261), and the first bearing (260) is mounted in the first bearing mounting position (261), so that the cutter adjusting arm (201) is rotatably connected with the cutter mounting shaft (210).

10. The knife switching device of claim 1, wherein: The part of the cutter mounting shaft (210) located inside the cutter mounting seat (211) is provided with at least one second bearing (262), the cutter mounting seat (211) is provided with a second bearing mounting position (263), and the second bearing (262) is mounted in the second bearing mounting position (263), so that the cutter mounting shaft (210) is rotatably mounted in the cutter mounting seat (211).

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