A cutting device and a cutting method

Abstract

A cutting device includes a first cutter seat, a second cutter seat, a first cutter disposed on the first cutter seat, and a second cutter disposed on the second cutter seat. The first cutter seat and the second cutter seat are connected by a cam drive mechanism. The cam drive mechanism includes a drive cam, and the drive cam is provided with a first drive portion for driving the first cutter seat to move towards the second cutter seat, a second drive portion for driving the second cutter seat to move towards the first cutter seat, and a holding portion for keeping the second cutter seat stationary. Cutting method: The drive cam rotates, the first drive portion drives the first cutter seat to move towards the second cutter seat, the second drive portion drives the second cutter seat to move towards the first cutter seat, and both the first cutter and the second cutter contact the hose; the first drive portion drives the first cutter seat to continue moving towards the second cutter seat, and the second cutter seat remains stationary until the first cutter cuts off the hose. The structure of the present invention is simple and reliable, which is beneficial to improving the cutting efficiency and quality.

Description

Technical Field

[0001] The present invention relates to food and drug packaging equipment and its use method, and particularly to a cutting device and a cutting method. Background Art

[0002] After the filling and heat-sealing of ointment products are completed in flexible packaging materials such as aluminum-plastic tubes, since the top of the flexible tube is not flat enough, it is necessary to cut the tail to ensure good appearance quality and consistency of the packaging material tail.

[0003] Patent document CN 211766443 U discloses a flexible tube filling and sealing machine, which realizes the purpose of flattening the top of the flexible tube during the printing and sealing process through the coordinated use of a servo motor, a threaded rod, a sliding plate, a printing mechanism and a shearing mechanism. However, in this technical solution, both the cutting knife and the fixed block are designed as rigid installation structures. Affected by factors such as processing errors and installation errors, it is very difficult to ensure that the bottom of the cutting knife always keeps close contact with the top of the fixed block, and thus it is impossible to ensure the flatness and beauty of the cut. And with the improvement of production efficiency, higher requirements are also put forward for the cutting efficiency. The solution of driving the threaded rod to rotate by the servo motor to realize shearing has too long action time and is difficult to meet the requirements. At the same time, the shearing parts at both ends of the threaded rod have the same stroke, and the shearing part at a lower position may contact the thicker part after the flexible tube is filled (the tail end of the flexible tube is thinner after heat-sealing), resulting in the flexible tube becoming skewed and being not conducive to ensuring the cutting quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a cutting device with a simple and reliable structure, which is conducive to improving the cutting efficiency and quality.

[0005] The present invention further provides a cutting method for the above-mentioned cutting device.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A cutting device includes a first cutting knife seat, a second cutting knife seat, a first cutting knife arranged on the first cutting knife seat and a second cutting knife arranged on the second cutting knife seat. The first cutting knife seat is connected to the second cutting knife seat through a cam driving mechanism. The cam driving mechanism includes a driving cam, and the driving cam is provided with a first driving part for driving the first cutting knife seat to move towards the second cutting knife seat, a second driving part for driving the second cutting knife seat to move towards the first cutting knife seat, and a holding part for keeping the second cutting knife seat stationary.

[0008] As a further improvement of the above technical solution: The first driving part is located at one end of the driving cam, the second driving part and the holding part are located at the other end of the driving cam. Both the first driving part and the second driving part are flat parts, and the length of the first driving part is greater than that of the second driving part. The first driving part and the second driving part are connected by a first arc transition part. The holding part is an arc surface part, and the center of the circle coincides with the center of the driving cam. The second driving part and the holding part are connected by a second arc transition part.

[0009] As a further improvement of the above technical solution: The cam driving mechanism further includes a guiding seat, a first guiding rod disposed through the guiding seat, a second guiding rod disposed through the first guiding rod, a first rolling member connected to one end of the first guiding rod, a second rolling member connected to one end of the second guiding rod, and an elastic reset member connected between the first guiding rod and the second guiding rod. The driving cam is disposed between the first rolling member and the second rolling member. The first cutter seat is connected to the other end of the second guiding rod, and the second cutter seat is connected to the other end of the first guiding rod; or, the first cutter seat is connected to the other end of the first guiding rod, and the second cutter seat is connected to the other end of the second guiding rod.

[0010] As a further improvement of the above technical solution: A plurality of the first cutter seats and the second cutter seats are provided and arranged in one-to-one correspondence; there are two upper and lower ones of the first rolling member, the second rolling member and the driving cam.

[0011] As a further improvement of the above technical solution: Each of the first guiding rods is connected by a first connecting plate, each of the second guiding rods is connected by a second connecting plate. The first rolling member is disposed on the first connecting plate, the second rolling member is disposed on the second connecting plate, and the elastic reset member is connected between the first connecting plate and the second connecting plate.

[0012] As a further improvement of the above technical solution: The first cutter seat is sleeved on the second guiding rod and locked by a first locking handle, and the second cutter seat is sleeved on the first guiding rod and locked by a second locking handle; or, the first cutter seat is sleeved on the first guiding rod and locked by a first locking handle, and the second cutter seat is sleeved on the second guiding rod and locked by a second locking handle.

[0013] As a further improvement of the above technical solution: The cam driving mechanism is disposed on a lifting seat, and the lifting seat is provided with a lifting guide rail and a lifting adjusting member.

[0014] As a further improvement of the above technical solution: a blowing port is provided on the first cutter base, the second cutter base is connected with a tail slag collecting trough, and a collector is provided at the lower end of the tail slag collecting trough.

[0015] The second cutter is hinged to the second cutter base, and an elastic pushing member for pushing the second cutter to abut against the first cutter is provided on the second cutter base.

[0016] A cutting method for the above cutting device includes the following steps:

[0017] S1. Drive the cam to rotate, the first driving part drives the first cutter base to move towards the second cutter base, and at the same time the second driving part drives the second cutter base to move towards the first cutter base until both the first cutter and the second cutter contact the product to be cut.

[0018] S2. The first driving part drives the first cutter base to continue moving towards the second cutter base, and the holding part keeps the second cutter base stationary until the first cutter cuts off the product to be cut.

[0019] Compared with the prior art, the advantages of the present invention are as follows: the cutting device disclosed by the present invention uses the rotational movement of the cam drive mechanism to drive the first cutter base and the second cutter base to reciprocate, and the first cutter and the second cutter complete cutting during the movement of their respective cutter bases. Compared with the traditional use of air cylinders for driving, it has the advantages of high speed, high efficiency and stable operation, and can realize complex movement processes; initially, the first cutter and the second cutter are far away from each other to make space, the tail of the hose is conveyed between the first cutter and the second cutter, the driving cam rotates, the first driving part drives the first cutter base to move towards the second cutter base, and at the same time the second driving part drives the second cutter base to move towards the first cutter base until both the first cutter and the second cutter contact the product to be cut, which is beneficial to shortening the respective strokes of the first cutter and the second cutter. After that, the second cutter remains stationary under the action of the holding part to avoid contacting the thicker part after the hose is filled, causing the hose to skew, and the first cutter continues to move towards the side where the second cutter is located under the drive of the first driving part to complete cutting, which is beneficial to ensuring the cutting quality.

[0020] For the cutting method of the cutting device disclosed by the present invention, after the tail of the hose is conveyed between the first cutter and the second cutter, the driving cam rotates, the first driving part drives the first cutter base to move towards the second cutter base, and at the same time the second driving part drives the second cutter base to move towards the first cutter base until both the first cutter and the second cutter contact the product to be cut, which also shortens the respective strokes of the first cutter and the second cutter, is beneficial to improving the cutting efficiency. After that, the second cutter remains stationary under the action of the holding part to avoid contacting the thicker part after the hose is filled, causing the hose to skew, and the first cutter continues to move towards the side where the second cutter is located under the drive of the first driving part to complete cutting, which is beneficial to ensuring the cutting quality. Brief Description of the Drawings

[0021] Figure 1 Fig. is a schematic perspective view of the hose tail cutting device of the present invention.

[0022] Figure 2 Fig. is a schematic cross-sectional view of the first cutter seat and the second cutter seat of the present invention.

[0023] Figure 3 Fig. is a schematic perspective view of the first perspective of the drive mechanism in the present invention.

[0024] Figure 4 Fig. is a schematic perspective view of the second perspective of the drive mechanism in the present invention.

[0025] Figure 5 Fig. is a schematic structural view of the drive cam in the present invention.

[0026] Each reference numeral in the figure represents:

[0027] 1, first cutter seat; 11, first locking handle; 12, air blowing port; 2, second cutter seat; 21, elastic pushing member; 22, second locking handle; 23, tail slag collection trough; 24, collector; 3, first cutter; 4, second cutter; 5, cam drive mechanism; 51, guide seat; 52, first guide rod; 53, second guide rod; 54, first rolling member; 55, second rolling member; 56, drive cam; 561, first drive portion; 562, second drive portion; 563, holding portion; 564, servo motor; 565, first arc transition portion; 566, second arc transition portion; 57, elastic reset member; 58, first connecting plate; 59, second connecting plate; 61, lifting seat; 62, lifting guide rail; 63, lifting adjusting member. Detailed Description of the Invention

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0029] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0030] In this application, unless otherwise clearly specified and defined, terms such as "assembled", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0032] Embodiment 1

[0033] Figures 1 to 5 An embodiment of the cutting device of the present invention is shown. The cutting device of this embodiment includes a first cutter seat 1, a second cutter seat 2, a first cutter 3 provided on the first cutter seat 1, and a second cutter 4 provided on the second cutter seat 2. The first cutter seat 1 and the second cutter seat 2 are connected by a cam drive mechanism 5. The cam drive mechanism 5 includes a drive cam 56. The drive cam 56 is provided with a first drive portion 561 for driving the first cutter seat 1 to move towards the second cutter seat 2, a second drive portion 562 for driving the second cutter seat 2 to move towards the first cutter seat 1, and a holding portion 563 for keeping the second cutter seat 2 stationary. Preferably, the drive cam 56 is driven to rotate by a servo motor 564, which can achieve precise control of the speed, position, and torque of the drive cam 56, and has good high-speed performance, which is beneficial to ensuring the cutting efficiency.

[0034] In the cutting device of this embodiment, when the first cutter holder 1 and the second cutter holder 2 are driven to reciprocate by the rotational motion of the cam driving mechanism 5, the first cutter 3 and the second cutter 4 complete cutting during the movement of their respective cutter holders. Compared with the traditional cylinder drive, it has the advantages of high speed, high efficiency and stable operation, and can realize complex movement processes. Initially, the first cutter 3 and the second cutter 4 move away from each other to make space, and the tail of the hose is conveyed between the first cutter 3 and the second cutter 4. The driving cam 56 is rotated, the first driving part 561 drives the first cutter holder 1 to move towards the second cutter holder 2, and at the same time, the second driving part 562 drives the second cutter holder 2 to move towards the first cutter holder 1 until both the first cutter 3 and the second cutter 4 contact the hose to be cut, which is also beneficial to shortening the respective strokes of the first cutter 3 and the second cutter 4. After that, the second cutter 4 remains stationary under the action of the holding part 563 to avoid contacting the thicker part after the hose is filled, causing the hose to skew. The first cutter 3 continues to move towards the side where the second cutter 4 is located under the drive of the first driving part 561 to complete the cutting, which is beneficial to ensuring the cutting quality. After the cutting is completed, the driving cam 56 drives the first cutter 3 and the second cutter 4 to move away from each other, creating space in the middle again to prepare for the next cutting, and so on in a cycle.

[0035] As a preferred embodiment, the first driving part 561 is located at one end of the driving cam 56, the second driving part 562 and the holding part 563 are located at the other end of the driving cam 56. Both the first driving part 561 and the second driving part 562 are flat parts and the length of the first driving part 561 is greater than that of the second driving part 562. The first driving part 561 and the second driving part 562 are connected by a first arc transition part 565. The holding part 563 is an arc surface part and the center of the holding part 563 coincides with the center of the driving cam 56. The second driving part 562 and the holding part 563 are connected by a second arc transition part 566. The first driving part 561 and the second driving part 562 can continuously push the first cutter 3 and the second cutter 4 to move towards each other, and the first cutter 3 has a longer stroke. The holding part 563 can keep the second cutter 4 stationary to avoid hitting the thicker part below the tail of the hose and causing the hose to skew. The first arc transition part 565 and the second arc transition part 566 make the movement process of the driving cam 56 smoother and more stable, avoiding jamming. On the basis of realizing the required complex movement, the driving cam 56 with this structure is easy to process and manufacture, which is beneficial to reducing costs. For details, see Figure 5 , the radius of the holding part 563 is R1 and the center is O1, while the radius of the second arc transition part 566 is R2 (R2 < R1) and the center is O2. Preferably, the radius of the first arc transition part 565 is R3 (R3 < R1), and the center is also O1. The first arc transition part 565 can also keep the cutter stationary.

[0036] Further, in this embodiment, the cam driving mechanism 5 further includes a guiding seat 51, a first guiding rod 52 inserted into the guiding seat 51, a second guiding rod 53 inserted into the first guiding rod 52, a first rolling member 54 connected to one end of the first guiding rod 52, a second rolling member 55 connected to one end of the second guiding rod 53, and an elastic reset member 57 connected between the first guiding rod 52 and the second guiding rod 53. The driving cam 56 is disposed between the first rolling member 54 and the second rolling member 55. The first cutter seat 1 is connected to the other end of the second guiding rod 53, and the second cutter seat 2 is connected to the other end of the first guiding rod 52. In this embodiment, the elastic reset member 57 is a helical spring. Of course, in other embodiments, it may also be an elastic rope, elastic rubber, etc.; the first rolling member 54 and the second rolling member 55 may be rolling bearings, rollers, etc. During operation, the driving cam 56 pushes the first rolling member 54 and the second rolling member 55 away from each other, thereby driving the first guiding rod 52 and the second guiding rod 53 to move towards each other. At the same time, the elastic reset member 57 deforms, and the first guiding rod 52 and the second guiding rod 53 drive the first cutter 3 and the second cutter 4 to move towards each other through the first cutter seat 1 and the second cutter seat 2 for cutting. After the cutting is completed, the deformation of the elastic reset member 57 is restored, driving the first cutter 3 and the second cutter 4 to reset. The guiding seat 51 can provide a guiding function for the first guiding rod 52, and the first guiding rod 52 can provide a guiding function for the second guiding rod 53, ensuring a smooth and stable movement process and avoiding deviation. At the same time, the first guiding rod 52 and the second guiding rod 53 also facilitate fine-tuning the initial installation positions of the first cutter 3 and the second cutter 4 to achieve the centering of the first cutter 3 and the second cutter 4, that is, the first cutter 3 and the second cutter 4 contact the hose simultaneously, preventing the hose from deviating before the first cutter 3 completes the cutting. The structure is simple and effective. Of course, in other embodiments, the installation positions of the first cutter seat 1 and the second cutter seat 2 can also be swapped, that is, the first cutter seat 1 is connected to the other end of the first guiding rod 52, and the second cutter seat 2 is connected to the other end of the second guiding rod 53, and the cutting process can also be completed.

[0037] As a preferred embodiment, a plurality of first cutter seats 1 and second cutter seats 2 are provided and arranged in one-to-one correspondence, which can achieve batch cutting and double the production efficiency; there are two upper and lower first rolling members 54, second rolling members 55 and driving cams 56, with good symmetry, which is beneficial to maintaining balanced force and ensuring a smooth and reliable movement process.

[0038] Furthermore, in this embodiment, each first guide rod 52 is connected by a first connecting plate 58, each second guide rod 53 is connected by a second connecting plate 59, the first rolling member 54 is arranged on the first connecting plate 58, the second rolling member 55 is arranged on the second connecting plate 59, and the elastic reset member 57 is connected between the first connecting plate 58 and the second connecting plate 59. This structure can enable each first cutter holder 1 and second cutter holder 2 to move synchronously, and reduce the number of components such as the driving cam 56, the first rolling member 54, and the second rolling member 55, thereby simplifying the structure and reducing the cost.

[0039] Furthermore, in this embodiment, the first cutter holder 1 is sleeved on the second guide rod 53 and locked by a first locking handle 11, and the second cutter holder 2 is sleeved on the first guide rod 52 and locked by a second locking handle 22. After loosening the first locking handle 11, the first cutter holder 1 can be axially moved to separate from the second guide rod 53; then, after loosening the second locking handle 22, the second cutter holder 2 can be axially moved to separate from the first guide rod 52. The installation process is the opposite, so as to realize the quick replacement of the first cutter 3 and the second cutter 4, with a simple and effective structure. Of course, in other embodiments, the installation positions of the first cutter holder 1 and the second cutter holder 2 can also be swapped, that is, the first cutter holder 1 is sleeved on the first guide rod 52 and locked by a first locking handle 11, and the second cutter holder 2 is sleeved on the second guide rod 53 and locked by a second locking handle 22, which can also achieve the purpose of quickly replacing the first cutter 3 and the second cutter 4, and will not be elaborated here.

[0040] Furthermore, in this embodiment, the cam driving mechanism 5 is arranged on a lifting seat 61, and the lifting seat 61 is provided with a lifting guide rail 62 and a lifting adjusting member 63 (such as an adjusting screw rod, a cylinder, etc.). By driving the lifting seat 61 to move along the lifting guide rail 62 through the lifting adjusting member 63, the cam driving mechanism 5, the first cutter 3, the second cutter 4, etc. are driven to lift as a whole, which can adapt to hoses of different heights and improve the compatibility of the equipment. The lifting guide rail 62 can provide a guiding function for the lifting seat 61 to ensure that the lifting process is stable and smooth, and avoid deviation.

[0041] Furthermore, in this embodiment, a blowing port 12 is arranged on the first cutter holder 1, the second cutter holder 2 is connected with a tail slag collecting trough 23, and a collector 24 is arranged at the lower end of the tail slag collecting trough 23. After cutting, the blowing port 12 blows air to blow the waste generated by cutting into the tail slag collecting trough 23, and it falls into the collector 24 below along the tail slag collecting trough 23 for collection, which is beneficial to ensuring the cleanliness of the production environment and avoiding the waste from affecting the operation of the first cutter 3 and the second cutter 4.

[0042] Further, in this embodiment, the second cutter 4 is hinged to the second cutter seat 2, and an elastic pushing member 21 for pushing the second cutter 4 to abut against the first cutter 3 is provided on the second cutter seat 2. Preferably, the elastic pushing member 21 is a helical spring. Of course, in other embodiments, it may also be an elastic rubber block, an elastic rope, etc. Under the pushing of the elastic pushing member 21, it is ensured that the first cutter 3 and the second cutter 4 can be kept in close contact with each other up and down, so as to ensure the flatness and beauty of the hose cut. The structure is simple and effective.

[0043] Embodiment 2

[0044] The cutting method of the cutting device in this embodiment includes the following steps:

[0045] S1. Drive the cam 56 to rotate. The first driving part 561 drives the first cutter seat 1 to move towards the second cutter seat 2. At the same time, the second driving part 562 drives the second cutter seat 2 to move towards the first cutter seat 1 until both the first cutter 3 and the second cutter 4 contact the product to be cut.

[0046] S2. The first driving part 561 drives the first cutter seat 1 to continue moving towards the second cutter seat 2, and the holding part 563 keeps the second cutter seat 2 stationary until the first cutter 3 cuts off the product to be cut.

[0047] In the cutting method of this embodiment, after the tail of the hose is conveyed between the first cutter 3 and the second cutter 4, the driving cam 56 rotates. The first driving part 561 drives the first cutter seat 1 to move towards the second cutter seat 2. At the same time, the second driving part 562 drives the second cutter seat 2 to move towards the first cutter seat 1 until both the first cutter 3 and the second cutter 4 contact the hose to be cut, and centering is completed under the action of the second arc transition part 566. At the same time, the strokes of the first cutter 3 and the second cutter 4 are also shortened, which is beneficial to improving the cutting efficiency. After that, the second cutter 4 remains stationary under the action of the holding part 563 to avoid contacting the thicker part after the hose is filled, causing the hose to be skewed. The first cutter 3 continues to move towards the side where the second cutter 4 is located under the drive of the first driving part 561 to complete the cutting, which is beneficial to ensuring the cutting quality.

[0048] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A cutting device for cutting the tail of a hose, comprising a first cutter seat (1), a second cutter seat (2), a first cutter (3) provided on the first cutter seat (1), and a second cutter (4) provided on the second cutter seat (2), characterized in that: The first cutter seat (1) is connected to the second cutter seat (2) through a cam driving mechanism (5). The cam driving mechanism (5) includes a driving cam (56). The driving cam (56) is provided with a first driving part (561) for driving the first cutter seat (1) to move towards the second cutter seat (2), a second driving part (562) for driving the second cutter seat (2) to move towards the first cutter seat (1), and a holding part (563) for keeping the second cutter seat (2) stationary. The first driving part (561) is located at one end of the driving cam (56), the second driving part (562) and the holding part (563) are located at the other end of the driving cam (56). Both the first driving part (561) and the second driving part (562) are flat parts, and the length of the first driving part (561) is greater than that of the second driving part (562). The first driving part (561) and the second driving part (562) are connected by a first arc transition part (565). The holding part (563) is an arc-shaped part and its center coincides with the center of the driving cam (56). After the second cutter (4) contacts the hose, the holding part (563) is used to keep the second cutter (4) stationary to prevent hitting the thicker part below the tail of the hose. The second driving part (562) and the holding part (563) are connected by a second arc transition part (566).

2. The cutting device according to claim 1, characterized in that: The cam driving mechanism (5) further includes a guide seat (51), a first guide rod (52) inserted into the guide seat (51), a second guide rod (53) inserted into the first guide rod (52), a first rolling member (54) connected to one end of the first guide rod (52), a second rolling member (55) connected to one end of the second guide rod (53), and an elastic reset member (57) connected between the first guide rod (52) and the second guide rod (53). The driving cam (56) is arranged between the first rolling member (54) and the second rolling member (55). The first cutter seat (1) is connected to the other end of the second guide rod (53), and the second cutter seat (2) is connected to the other end of the first guide rod (52); or, the first cutter seat (1) is connected to the other end of the first guide rod (52), and the second cutter seat (2) is connected to the other end of the second guide rod (53).

3. The cutting device according to claim 2, wherein: A plurality of the first cutter seats (1) and the second cutter seats (2) are provided and arranged in one-to-one correspondence; there are two upper and lower each of the first rolling member (54), the second rolling member (55) and the driving cam (56).

4. The cutting device according to claim 3, wherein: Each of the first guide rods (52) is connected by a first connecting plate (58), each of the second guide rods (53) is connected by a second connecting plate (59). The first rolling member (54) is arranged on the first connecting plate (58), the second rolling member (55) is arranged on the second connecting plate (59), and the elastic reset member (57) is connected between the first connecting plate (58) and the second connecting plate (59).

5. The cutting device according to claim 2, wherein: The first cutter seat (1) is sleeved on the second guide rod (53) and locked by a first locking handle (11), and the second cutter seat (2) is sleeved on the first guide rod (52) and locked by a second locking handle (22); or, the first cutter seat (1) is sleeved on the first guide rod (52) and locked by the first locking handle (11), and the second cutter seat (2) is sleeved on the second guide rod (53) and locked by the second locking handle (22).

6. The cutting device according to any one of claims 1 to 5, characterized in that: The cam driving mechanism (5) is arranged on a lifting seat (61), and the lifting seat (61) is provided with a lifting guide rail (62) and a lifting adjusting member (63).

7. The cutting device according to any one of claims 1 to 5, characterized in that: The first cutter seat (1) is provided with a blowing port (12), the second cutter seat (2) is connected with a tail slag collecting trough (23), and a collector (24) is arranged at the lower end of the tail slag collecting trough (23).

8. The cutting device according to any one of claims 1 to 5, characterized in that: The second cutter (4) is hinged to the second cutter seat (2), and an elastic pushing member (21) for pushing the second cutter (4) to abut against the first cutter (3) is arranged on the second cutter seat (2).

9. A cutting method of the cutting device according to any one of claims 1 to 8, characterized in that: Comprising the following steps: S1. Drive the cam (56) to rotate. The first driving part (561) drives the first cutter seat (1) to move towards the second cutter seat (2), and at the same time, the second driving part (562) drives the second cutter seat (2) to move towards the first cutter seat (1) until both the first cutter (3) and the second cutter (4) contact the product to be cut. S2. The first driving part (561) drives the first cutter seat (1) to continue moving towards the second cutter seat (2), and the holding part (563) keeps the second cutter seat (2) stationary until the first cutter (3) cuts off the product to be cut.

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