An apparatus for annularly cutting filter rods

Abstract

The present invention discloses a device for annularly cutting filter rods, which relates to the technical field of production and processing. The device includes a material conveying pipe and segment cutting blades for annularly cutting and segmenting the filter rods, and further includes an annular cutting device with an automatic blanking function arranged at the rear side of the segment cutting blades. For the device for annularly cutting filter rods of the present invention, through the provided supporting assembly, the filter rods clamped by the electric clamping jaws are supported by the supporting seat and the sliding seat, so that the annular cutting of the filter rods is more stable, indirectly ensuring the flatness of the annular cutting surface of the filter rods, thereby directly guaranteeing the appearance and taste of the cigarettes; through the retraction and reset design of the spring of the sliding seat, under the linkage of the annular cutting mechanism and the transmission mechanism, the automatic blanking of the filter rods after annular cutting is realized, making the whole device more automated. Moreover, the supporting assembly is a pure mechanical mechanism, with a lower failure rate, more convenient for maintenance, and more ideal in terms of cost control, and is worthy of promotion.

Description

Technical Field

[0001] The present invention relates to the technical field of production and processing, and specifically to a device for circularly cutting filter rods. Background Art

[0002] Cigarettes are common consumer goods; and the filter tip (i.e., the filter rod) is an essential component of cigarettes. It can reduce the smoke, tar, and suspended particles generated during combustion that enter the mouth when smoking. The three main functions of a cigarette filter tip include direct interception, inertial compaction, and diffusion precipitation.

[0003] The diffusion precipitation function of a cigarette filter tip is more common in the customization of high-grade cigarettes. Based on this, the connection between the filter tip and the cigarette body needs to have high tightness to avoid leakage of smoke or poor filtering effect.

[0004] In view of this, since cigarettes are divided into slender, medium, and thick types, and the corresponding filter tip sizes are also different, it is necessary to be precise enough during the process of circularly cutting the filter rod to ensure the taste of the filter tip of the finished cigarette. Especially for high-grade cigarettes, there are extremely high processing requirements for the filter tip. To ensure the precise circular cutting of the filter rod, on the one hand, it is necessary to ensure the clamping stability of the filter rod. And due to the material of the filter rod, if the external force on the filter rod is excessive, it may cause the filter rod to be overly compressed, thereby affecting the taste of the filter rod. And how to solve the problem of ensuring the clamping stability of the filter rod during the circular cutting process and still enabling it to be discharged smoothly. For this reason, we propose a device for circularly cutting filter rods. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a device for circularly cutting filter rods, which has the advantages of stable clamping, higher automation, low cost, etc., and can effectively solve the problems in the background art.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a device for circularly cutting filter rods, including a feeding pipe and a segment cutting blade for circularly cutting and segmenting the filter rod, and further includes

[0007] a circular cutting device with an automatic discharging function arranged behind the segment cutting blade for circularly cutting the segmented filter rod;

[0008] The circular cutting device includes its main body transmission mechanism, and on one side of the middle part of the front end of the transmission mechanism, there is a support component for auxiliary support of the circular cutting of the filter rod, so that the circularly cut filter rod is automatically discharged.

[0009] Preferably, a clamping mechanism for clamping and fixing the segmented filter rod is arranged in the middle of the upper section of the transmission mechanism, and a circular cutting mechanism with an intuitive understanding of its cutting length is arranged at the mechanical output end of the transmission mechanism.

[0010] Preferably, the transmission mechanism includes its main body drive frame, and a gear ring is arranged inside the rear section of the drive frame. A support frame connected and fixed to the production line is arranged at the lower end of the drive frame.

[0011] Preferably, a turntable connected to the cutting mechanism is arranged at the rear end of the gear ring, and a gear meshing with the gear ring is arranged inside the front section of the drive frame.

[0012] Preferably, the clamping mechanism includes an electric gripper for clamping the filter rod after slitting. A motor for driving it is arranged at the mechanical input end of the electric gripper, and a ring frame for supporting it is arranged outside the electric gripper.

[0013] Preferably, a limit rotating groove matching the front-end structure of the ring frame is opened in the middle of the rear end of the turntable. Three fixing rods for connecting and fixing are arranged between the ring frame and the electric gripper.

[0014] Preferably, the cutting mechanism includes its main body tool rest. An arc surface for assisting in material feeding is opened at the upper end of the tool rest, and a cutting blade for circumferentially cutting the filter rod is arranged at the lower end of the tool rest.

[0015] Preferably, a scale for marking its length is arranged on the outer side of the cutting blade, and a pointer for pointing to the scale is arranged at the lower end of the tool rest.

[0016] Preferably, the support assembly includes a support seat and a sliding seat for assisting in supporting the circumferential cutting of the filter rod. The sliding seat is located inside the support seat, and a spring for resetting and rebounding is arranged between the support seat and the sliding seat.

[0017] Preferably, a spring plate for applying force to the tool rest is arranged on the lower side of the head end of the sliding seat, and a support rod connected and fixed to the support frame is arranged at the rear end of the outer wall of the support seat.

[0018] Compared with the prior art, the present invention provides a device for circularly cutting filter rods, having the following beneficial effects:

[0019] 1. For the device for circularly cutting filter rods, by arranging the cutting mechanism and providing a scale at the upper end of the cutting blade, thus, in combination with the pointer for observation, operators can directly know the current cutting thickness, and operators can adjust the cutting blade correspondingly based on the scale, so that the cutting mechanism can be commonly used for processing filter rods of different sizes for cigarette holders.

[0020] 2. For the device for circularly cutting filter rods, by arranging the support assembly, in view of the possible instability during the circumferential cutting with the three-legged clamping of the electric gripper, the filter rod clamped by the electric gripper is assisted in being supported by the support seat and the sliding seat, making the circumferential cutting of the filter rod more stable, indirectly ensuring the flatness of the circumferential cutting surface of the filter rod, thereby directly ensuring the appearance and taste of the cigarette.

[0021] 3. The device for annularly cutting filter rods realizes the automatic blanking of the filter rods after annular cutting through the set support assembly. With the retraction and reset design of the spring for the sliding seat, under the linkage of the annular cutting mechanism and the transmission mechanism, the whole device becomes more automated. Moreover, the support assembly is a pure mechanical mechanism with lower failure rate and is more convenient for maintenance. Also, the control of the construction cost is more ideal, making it worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an assembly state diagram of the device for annularly cutting filter rods according to the present invention.

[0023] Figure 2 It is a view of the overall structure of the device for annularly cutting filter rods according to the present invention. Figure 1 .

[0024] Figure 3 It is a view of the overall structure of the device for annularly cutting filter rods according to the present invention. Figure 2 .

[0025] Figure 4 It is an exploded view of the structure of the transmission mechanism for the device for annularly cutting filter rods according to the present invention.

[0026] Figure 5 It is a partial structure disassembly diagram of the clamping mechanism for the device for annularly cutting filter rods according to the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the annular cutting mechanism for the device for annularly cutting filter rods according to the present invention.

[0028] Figure 7 It is an anatomical diagram of the structure of the support assembly for the device for annularly cutting filter rods according to the present invention.

[0029] Figure 8 It is a schematic diagram of the structure of the support assembly for the device for annularly cutting filter rods according to the present invention.

[0030] In the figure:

[0031] 1. Material conveying pipe; 2. Segment cutting blade; 3. Annular cutting device;

[0032] 31. Transmission mechanism; 32. Clamping mechanism; 33. Annular cutting mechanism; 34. Support assembly;

[0033] 311. Transmission machine frame; 312. Ring gear; 313. Gear; 314. Support frame; 315. Turntable;

[0034] 321. Ring frame; 322. Electric gripper; 323. Motor; 324. Fixed rod; 325. Limit rotating groove;

[0035] 331. Tool rest; 332. Circumferential cutting blade; 333. Scale; 334. Pointer;

[0036] 341. Support base; 342. Slide base; 343. Spring plate; 344. Spring; 345. Support rod. Detailed implementation manner

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is customarily placed during use. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0041] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0042] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific Embodiment 1

[0044] To address the deficiencies of the prior art, as Figure 1 shown, the present invention provides a device for annularly cutting filter rods. The material conveying pipe 1 and the segment cutting blade 2 are both arranged on an external production line, and the material conveying pipe 1 is opposite to the mechanical input end of the annular cutting device 3. The segment cutting blade 2 is located between the material conveying pipe 1 and the annular cutting device 3.

[0045] It should be noted that before processing the cigarette filter tip, the operator first installs the annular cutting device 3 as a whole on the production line, makes the annular cutting device 3 opposite to the material conveying pipe 1, and makes the segment cutting blade 2 located between the material conveying pipe 1 and the annular cutting device 3. Then, the mechanical input end of the annular cutting device 3 is externally connected to a driving motor;

[0046] During the process of processing the cigarette filter tip, the filter rod is conveyed to the annular cutting device 3 through the material conveying pipe 1, the filter rod is segment cut by the segment cutting blade 2, and then the annular cutting device 3 performs an annular cutting process on the segmented filter rod.

[0047] As Figure 2 、 3 shown, a device for annularly cutting filter rods, its body, the mechanical input end of the transmission mechanism 31 is externally connected to a driving motor, and the lower end of the transmission mechanism 31 is fixedly connected to the external production line. The lower end of the support assembly 34 is fixedly connected to one side of the middle part of the front end of the transmission mechanism 31, and the main body of the annular cutting mechanism 33 is fixedly connected to the front end of the mechanical output end of the transmission mechanism 31. The clamping mechanism 32 is rotatably connected to the middle part of the upper section of the transmission mechanism 31, and the clamping mechanism 32 is externally connected and fixed.

[0048] It should be noted that the present invention is a device for annularly cutting filter rods, its body. During the process of processing the cigarette filter tip, the filter rod is conveyed to the clamping mechanism 32 through the material conveying pipe 1 and clamped and fixed by it. After being segmented by the segment cutting blade 2, under the driving action of the transmission mechanism 31, the annular cutting mechanism 33 performs an annular cutting on the segmented filter rod;

[0049] Meanwhile, the support component 34 stably supports the filter rod during the circumferential cutting process. After the circumferential cutting mechanism 33 completes a single circumferential cutting through the turnover of the transmission mechanism 31, the circumferential cutting mechanism 33 acts on the support component 34 synchronously, and the clamping mechanism 32 releases the clamping, so that the circumferentially cut filter rod falls from the support component 34, and then the filter rod can be subjected to core separation.

[0050] Specifically, as Figure 4 , 5 shown, a transmission mechanism 31 for a device for annularly cutting a filter rod, the lower end of the transmission machine frame 311 is fixedly connected to the upper end of the support frame 314, the gear 313 is clamped inside the front section of the transmission machine frame 311 and is rotatably connected thereto, and the mechanical output end of the external drive motor is connected to the gear 313, the toothed ring 312 is clamped inside the rear section of the transmission machine frame 311 and is rotatably connected thereto, and the toothed ring 312 meshes with the gear 313, and the front end of the turntable 315 is fixedly connected to the rear end of the toothed ring 312.

[0051] It should be noted that the present invention is a device for annularly cutting a filter rod. Before processing the filter rod, the operator installs and fixes the whole device on the external production line based on the support frame 314, and only needs to connect the transmission mechanism 31 to the output end of the drive motor;

[0052] During the circumferential cutting of the filter rod, the operator drives the drive motor, and the output of the drive motor drives the gear 313 to rotate. The gear 313 then drives the toothed ring 312 to rotate synchronously. Under the action of the toothed ring 312, the circumferential cutting mechanism 33 is driven to turnover through the turntable 315, that is, the circumferential cutting process of the filter rod clamped on the clamping mechanism 32 is realized.

[0053] Specifically, and as Figure 5 , 6 shown, a clamping mechanism 32 for a device for annularly cutting a filter rod, the motor 323 is externally fixed, and the mechanical output end of the motor 323 is fixedly connected to the mechanical input end of the electric gripper 322. The outer wall of the main body of the electric gripper 322 is fixedly connected to the inner wall of the ring frame 321 through three fixing rods 324, and the ring frame 321 is clamped in the middle of the rear end of the turntable 315 through the limit rotating groove 325 and is rotatably connected thereto.

[0054] It should be noted that the present invention is a device for annularly cutting a filter rod. During the installation and fixation of the circumferential cutting device 3, the motor 323 should also be externally fixed;

[0055] During the process of circumferentially cutting the filter rod, the filter rod is conveyed to the electric gripper 322 through the feed pipe 1. At this time, the motor 323 drives the three grippers on the electric gripper 322 to expand until the filter rod is suitable for being conveyed between the three grippers. Then, the motor 323 synchronously drives the three grippers on the electric gripper 322 to close to clamp the filter rod.

[0056] During this process, the turntable 315 rotates relative to the ring frame 321 based on the limit rotating groove 325.

[0057] Optionally, a cam divider is installed between the motor 323 and the electric gripper 322 to achieve intermittent driving of the electric gripper 322. The motor 323 can be a stepping motor, a servo motor, etc., with adjustable speed and higher controllability.

[0058] Specifically, as shown in Figure 6 a circumferential cutting mechanism 33 for a device for circumferentially cutting filter rods. The tool holder 331 is fixedly connected to one side of the front end of the turntable 315, and the circumferential cutting blade 332 is adjustably fixedly connected to the rear end of the tool holder 331. The scale 333 is engraved on the outer side of the circumferential cutting blade 332, and the pointer 334 is provided on one side of the lower end of the tool holder 331.

[0059] It should be noted that the present invention is a device for circumferentially cutting filter rods. Through the provided circumferential cutting mechanism 33, before circumferentially cutting the filter rod, the operator can observe the scale 333 based on the pointer 334 to adjust the extension length of the circumferential cutting blade 332 to be suitable.

[0060] During the process of circumferentially cutting the filter rod, the filter rod is stably clamped by the electric gripper 322. Under the action of the turntable 315, the circumferential cutting blade 332 is driven by the tool holder 331 to act on the filter rod to achieve circumferential cutting of the filter rod.

[0061] Among them, a scale 333 is provided at the upper end of the circumferential cutting blade 332. In this way, by observing in combination with the pointer 334, the operator can directly know the current circumferential cutting thickness, and the operator can adjust the circumferential cutting blade 332 corresponding to the scale 333 so that the circumferential cutting mechanism 33 can be generally used for processing filter rods of different sizes.

[0062] Specifically, as shown in Figure 7 、 8 a support assembly 34 for a device for circumferentially cutting filter rods. The rear end of the outer wall of the support seat 341 is fixedly connected to the support frame 314 through the support rod 345, and the support seat 341 is designed to be hollow. The sliding seat 342 is matched with the structure of the support seat 341 and is slidably connected to its inner wall. One end of the spring 344 is fixedly connected to the tail end of the sliding seat 342, and the other end of the spring 344 is fixedly connected to one end inside the support seat 341. The spring plate 343 is fixedly connected to the lower side of the head end of the sliding seat 342.

[0063] It should be noted that the present invention is a device for annularly cutting filter rods. Through the provided supporting component 34, during the current annular cutting of a single filter rod, the sliding seat 342 and the supporting seat 341 can assist in supporting the clamped filter rod.

[0064] During the rotation of the tool holder 331 through the turntable 315, if the tool holder 331 rotates to be in contact with the spring plate 343, under the action of the tool holder 331, the spring plate 343 drives the sliding seat 342 to retract and slide inside the supporting seat 341. At the same time, the spring 344 is compressed and has elastic potential energy.

[0065] After the sliding seat 342 is substantially retracted into the supporting seat 341, the tool holder 331 drives the annular cutting blade 332 to just rotate one week. At this time, the motor 323 drives the three jaws of the electric gripper 322 to release again. The filter rod is no longer externally fixed. At the same time, the sliding seat 342 no longer blocks the filter rod, and the filter rod then slides down from the tool holder 331 to realize its automatic blanking.

[0066] After the annular cutting of this batch of filter rods is completed, the tool holder 331 continues to rotate under the action of the turntable 315, and then crosses the spring plate 343 for the next batch of annular cutting. Since the previous spring 344 was compressed and had elastic potential energy, when the sliding seat 342 is no longer stressed based on the spring plate 343, the spring 344 must release the elastic potential energy to drive the sliding seat 342 to extend to assist in supporting the next batch of filter rods.

[0067] Among them, in view of the possible instability of the three-jaw clamping of the electric gripper 322 during the annular cutting process, the supporting seat 341 and the sliding seat 342 assist in supporting the filter rod clamped by the electric gripper 322, making the annular cutting of the filter rod more stable, indirectly ensuring the flatness of the annular cutting surface of the filter rod, and directly guaranteeing the appearance and taste of the cigarette.

[0068] Through the retraction and reset design of the spring 344 of the sliding seat 342, under the linkage of the annular cutting mechanism 33 and the transmission mechanism 31, the automatic blanking of the annularly cut filter rod is realized, making the whole device more automated. And the supporting component 34 is a pure mechanical mechanism, with a lower failure rate, more convenient for maintenance, and more ideal in terms of cost control, and is worthy of promotion.

[0069] In summary, the basic working principle of the present invention is as follows: Before processing the cigarette filter tip, the operator first installs the whole cutting ring device 3 on the production line, making the cutting ring device 3 face the feeding pipe 1, and the segment cutting blade 2 is located between the feeding pipe 1 and the cutting ring device 3. Then, the mechanical input end of the cutting ring device 3 is externally connected to a driving motor; Before processing the filter rod, the operator installs and fixes the whole device on the external production line based on the support frame 314, and docks the transmission mechanism 31 to the output end of the driving motor; During the process of cutting the filter rod in a ring shape, the operator drives the driving motor, and the output of the driving motor drives the gear 313 to rotate. The gear 313 then drives the gear ring 312 to rotate synchronously. Under the action of the gear ring 312, the cutting ring mechanism 33 is driven to rotate around by the turntable 315, that is, the ring cutting process of the filter rod clamped on the clamping mechanism 32 is realized; During the process of installing and fixing the cutting ring device 3, the motor 323 should also be externally fixed; During the process of cutting the filter rod in a ring shape, the filter rod is conveyed to the electric gripper 322 through the feeding pipe 1. At this time, the motor 323 drives the three grippers on the electric gripper 322 to expand until the filter rod is suitable for being conveyed between the three grippers, and then the motor 323 synchronously drives the three grippers on the electric gripper 322 to close to realize the clamping of the filter rod; During this process, the turntable 315 rotates relative to the ring frame 321 based on the limit rotating groove 325; Before cutting the filter rod in a ring shape, the operator can observe the scale 333 based on the pointer 334 to adjust the extension length of the cutting ring blade 332 to be suitable; During the process of cutting the filter rod in a ring shape, the filter rod is stably clamped by the electric gripper 322. Under the action of the turntable 315, the cutting ring blade 332 is driven by the tool holder 331 to act on the filter rod to realize the ring cutting of the filter rod; During the process of cutting the current single filter rod in a ring shape, the sliding seat 342 and the support seat 341 can assist in supporting the clamped filter rod; During the process of the tool holder 331 rotating around by the turntable 315, if the tool holder 331 rotates to be in contact with the spring plate 343, under the action of the tool holder 331, the spring plate 343 drives the sliding seat 342 to retract and slide inside the support seat 341. At the same time, the spring 344 is compressed to have elastic potential energy; After the sliding seat 342 is roughly retracted into the support seat 341, the tool holder 331 drives the cutting ring blade 332 to just rotate one week. At this time, the motor 323 drives the three grippers on the electric gripper 322 to loosen again, the filter rod is no longer externally fixed, and at the same time, the sliding seat 342 no longer blocks the filter rod, and the filter rod then slides down from the tool holder 331 to realize its automatic blanking; After the ring cutting of this batch of filter rods is completed, the tool holder 331 continues to rotate under the action of the turntable 315, and then crosses the spring plate 343 for the next batch of ring cutting. Because the spring 344 was compressed to have elastic potential energy before, after the sliding seat 342 is no longer stressed by the spring plate 343, the spring 344 must release the elastic potential energy to drive the sliding seat 342 to extend to assist in supporting the next batch of filter rods.

[0070] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A device for annularly cutting filter rods, comprising a feed pipe (1) and segment cutting blades (2) for annularly cutting and segmenting the filter rods, Characterized in that: It further comprises an annular cutting device (3) with an automatic feeding function arranged at the rear side of the segment cutting blades (2) for annularly cutting the segmented filter rods; the annular cutting device (3) comprises a main body transmission mechanism (31) thereof, and a support assembly (34) for auxiliary support of the filter rod annular cutting is arranged on one side of the middle part of the front end of the transmission mechanism (31) to enable the annularly cut filter rods to be automatically fed; A clamping mechanism (32) for clamping and fixing the segmented filter rods is arranged in the middle of the upper section of the transmission mechanism (31), and an annular cutting mechanism (33) with an intuitively known cutting length is arranged at the mechanical output end of the transmission mechanism (31); The transmission mechanism (31) comprises a main body transmission frame (311) thereof, and a gear ring (312) is arranged inside the rear section of the transmission frame (311), and a support frame (314) connected and fixed to the production line is arranged at the lower end of the transmission frame (311); A turntable (315) connected to the annular cutting mechanism (33) is arranged at the rear end of the gear ring (312), and a gear (313) meshing with the gear ring (312) is arranged inside the front section of the transmission frame (311); The clamping mechanism (32) comprises an electric gripper (322) for clamping the segmented filter rods, and a motor (323) for driving it is arranged at the mechanical input end of the electric gripper (322), and a ring frame (321) for supporting it is arranged outside the electric gripper (322); A limit rotating groove (325) whose front end structure fits with the front end of the ring frame (321) is opened in the middle of the rear end of the turntable (315), and three fixing rods (324) for connecting and fixing it are arranged between the ring frame (321) and the electric gripper (322); The annular cutting mechanism (33) comprises a main body tool rest (331) thereof, and an arc surface for auxiliary feeding is opened at the upper end of the tool rest (331), and an annular cutting blade (332) for annularly cutting the filter rods is arranged at the lower end of the tool rest (331); A scale (333) for marking its length is arranged on the outer side of the annular cutting blade (332), and a pointer (334) for pointing to the scale (333) is arranged at the lower end of the tool rest (331); The support assembly (34) comprises a support seat (341) and a sliding seat (342) for auxiliary support of the filter rod annular cutting, and the sliding seat (342) is located inside the support seat (341), and a spring (344) for its reset and rebound is arranged between the support seat (341) and the sliding seat (342); A spring plate (343) for applying force to the tool rest (331) is arranged on the lower side of the head end of the sliding seat (342), and a support rod (345) connected and fixed to the support frame (314) is arranged at the rear end of the outer wall of the support seat (341).

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