Circular cutter on-line cleaning guard

Abstract

This invention provides an online cleaning and protection device for a circular cutter. Installed on one side of a circular cutter, it includes a mounting base plate, an air-jet cleaning assembly, a protective cover assembly, and a pair of scraper assemblies elastically clamped onto the circular cutter. The scraper assemblies are rotatably mounted on one side of the mounting base plate and are used to scrape and clean the circular cutter using elastic clamping force. The air-jet cleaning assembly is located on the other side of the mounting base plate and is used to clean and cool the scraped circular cutter using compressed air. The protective cover assembly covers the scraper assemblies and the air-jet cleaning assembly to protect against and trap dust. This online cleaning and protection device for a circular cutter can adaptively adjust the cleaning clamping force on the circular cutter, maintain the sharpness of the circular cutter blade, improve ease of use, and prevent contamination from the smoke-generating section.

Description

Technical Field

[0001] This utility model relates to the field of tobacco equipment, specifically to an online cleaning and protection device for a circular cutter. Background Technology

[0002] When producing short cigarettes using cigarette rolling machines, some tobacco equipment requires two slitting processes for the tobacco-generating section. This section is primarily filled with reconstituted tobacco, which, compared to the filter tip, has higher plasticity and toughness, resulting in poorer cutting performance and necessitating a circular cutter to maintain high sharpness. Furthermore, before slitting, the reconstituted tobacco in the tobacco-generating section undergoes glycerin and online flavoring treatments. During the slitting process, a significant amount of tobacco residue accumulates on the blades. If the blades are not cleaned online promptly, this can easily contaminate the tobacco-generating end and further increase cutting resistance.

[0003] Utility model patent CN222217205U discloses a cutting device for reducing the burr rate of filter tips, including a cutting blade, a cleaning mechanism, and a blower mechanism. The cleaning mechanism is located on both sides of the cutting blade, partially overlapping it, and is used to scrape away accumulated dirt from the blade. The blower mechanism is located outside the cutting blade, with its air outlet facing the edge of the overlapping part between the cleaning mechanism and the cutting blade, and is used to cool the cutting blade and clean the scraped dirt. This cutting device effectively improves the problem of high burr defects in hollow filter tips, ensures the stability of cigarette quality, and extends the service life of the scraper. However, this cutting device for reducing the burr rate of filter tips is not an online cleaning method, and the disclosed cleaning mechanism uses two sets of fixedly installed scrapers. The spacing and holding force between the scrapers cannot be automatically adjusted, making it inconvenient for online trimming and cleaning of circular cutting blades. Utility Model Content

[0004] In order to achieve adaptive adjustment of the cleaning clamping force of the circular cutter and maintain the sharpness of the circular cutter blade, the technical solution adopted by this utility model is: an online cleaning and protection device for a circular cutter, which is installed on one side of the circular cutter and includes a mounting base plate, an air jet cleaning component, a protective cover component, and a pair of scraper components that are elastically clamped on the circular cutter.

[0005] The scraper assembly is rotatably mounted on one side of the mounting base plate and is used to scrape and clean the circular cutter by relying on elastic clamping force.

[0006] The jet cleaning component is located on the other side of the mounting base plate and is used to clean and cool the circular cutter after scraping and cleaning by using compressed air.

[0007] The protective cover assembly covers the outside of the scraper assembly and the jet cleaning assembly, and is used to protect against and buffer dust.

[0008] Based on the above, in order to achieve adaptive adjustment of the clamping force, the scraper assembly includes a tension spring, a swing arm, and a scraper blade;

[0009] The scraper blade is disposed at the movable end of the swing arm, and the fixed end of the swing arm is rotatably connected to the mounting base plate;

[0010] The two ends of the tension spring are respectively connected to the mounting base plate and the fixed end of the swing arm, so that the scraper blades of the pair of scraper assemblies are elastically clamped on the circular cutter.

[0011] Based on the above, in order to improve the service life of the scraper blade, the scraper blade is a triangular carbide scraper blade, and one side of two triangular carbide scraper blades are elastically fitted together.

[0012] Based on the above, the scraper blade is connected to the swing arm by a scraper blade fixing screw, and there is a clearance fit between the scraper blade and the scraper blade fixing screw, with a clearance value of 0.1mm to 0.15mm.

[0013] Based on the above, the fixed end of the swing arm is connected to the mounting base plate through the swing arm pivot, and there is a clearance fit between the swing arm pivot and the fixed end of the swing arm, with a clearance value of 0.1mm to 0.15mm.

[0014] This involves determining the precise values ​​that ensure the swing arm can move slightly along the optical axis of the swing arm's rotation, and the precise values ​​that ensure the scraper blade can move slightly axially along its fixing screw. Values ​​that are too small can easily lead to compression, resulting in stiff rotation of the scraper blade and swing arm. Values ​​that are too large will cause excessive axial movement, affecting the performance of the scraper assembly.

[0015] Based on the above, the jet cleaning assembly includes a jet block with an internal airflow channel, and a quick-connect pipe connector is installed at the air inlet of the airflow channel.

[0016] One end of the jet block is provided with a jet groove to accommodate the circular cutter, and the two air outlets of the airflow channel correspond to the two sides of the circular cutter respectively.

[0017] Based on the above, in order to sequentially scrape, air-clean, and cool the circular cutter, the air-cleaning assembly is located directly opposite the scraper assembly, and the mating surfaces of the pair of scraper assemblies are in the same plane as the air-jet channel, so that the circular cutter passes sequentially through the pair of scraper assemblies and the air-jet channel.

[0018] Based on the above, in order to facilitate installation, a support for connecting the mounting base plate is also included, the support being fixed to the drive mechanism housing of the circular cutter.

[0019] Based on the above, in order to improve the operational safety of the structure and avoid contaminating the cigarette, the protective cover assembly includes a fixed cover and a movable cover that can be flipped onto the fixed cover. The movable cover is provided with a magnetic base for adsorbing the fixed cover. The inner sides of the movable cover and the inner sides of the fixed cover are respectively provided with baffles for absorbing dust.

[0020] Based on the above, the movable cover is also provided with a transparent observation window to facilitate observation of the circular cutter.

[0021] This utility model has substantial features and advancements compared to existing technologies. Specifically, the circular cutter online cleaning and protection device provided by this utility model, by setting a scraper assembly, an air jet cleaning assembly, and a protective cover assembly next to the circular cutter, can utilize the tension of the tension spring and the lever action of the swing arm to automatically press the two sets of scraper blades on both sides of the circular cutter online. This allows the circular cutter to automatically scrape off adhesive and soot on the online, reducing cutting resistance and maintaining the sharpness of the circular cutter.

[0022] Due to the tension of the spring, the scraper blade will always fit tightly and adaptively against the circular cutter, and the clamping force on the circular cutter will be adjusted adaptively, making it easy to assemble the circular cutter.

[0023] When the scraping work is completed and the scraper blade needs to be removed from the working position, the scraper blade assembly can be automatically removed from the scraping working position and will remain in the removed position after the tension spring passes through the dead point position, thereby improving the convenience and safety of operation.

[0024] By installing an air jet cleaning component next to the cutter, which is designed with a gas flow channel and air nozzle that can be connected to an external high-pressure air source, high-pressure air can be directly sprayed online onto both sides of the circular cutter through the gas flow channel, achieving online air cleaning and physical cooling, thereby improving the cleanliness of the circular cutter.

[0025] Furthermore, by installing a cutter guard next to the cutter, and designing the cutter guard into two parts—a fixed cover and a movable cover—the movable cover can be flexibly rotated, increasing equipment safety while facilitating the operation of the scraper blade. Baffles are installed inside both the fixed and movable covers, with the edges designed to conform to the shape of the circular cutter and its scraper assembly, maintaining a small gap. During operation, the closed cutter guard can buffer more dust, reducing pollution in the smoke-generating section and improving ease of use.

[0026] Furthermore, a transparent observation window is provided on the movable cover to facilitate observation of the cutting blade's working status. The transparent observation window is fixedly connected to the movable cover, and a magnetic seat with a ball-head handle is installed on the transparent observation window. This ensures that after the movable cover is flipped downwards, there is a reliable closing force to maintain the protective cover in a closed state, ensuring that more dust can be trapped inside the cutting blade protective cover, thereby improving the yield of finished cigarettes.

[0027] In summary, this online cleaning and protection device for circular cutters can clean circular cutters online in a timely manner, and has the ability to adaptively adjust the clamping force on the circular cutter to maintain the sharpness of the circular cutter blade, improve ease of use, and prevent pollution of the smoke-generating section. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the circular cutter online cleaning and protection device provided by this utility model.

[0029] Figure 2 This is a schematic diagram of the scraper assembly structure in the circular cutter online cleaning and protection device provided by this utility model.

[0030] Figure 3 This is a side view of the scraper assembly in the circular cutter online cleaning and protection device provided by this utility model.

[0031] Figure 4 This is a schematic diagram of the internal structure of the air jet cleaning component in the circular cutter online cleaning and protection device provided by this utility model.

[0032] Figure 5 This is a schematic diagram of the overall structure of the circular cutter online cleaning and protection device and the cutter provided by this utility model.

[0033] Figure 6 This is a schematic diagram of the rear structure of the circular cutter online cleaning and protection device and the cutter provided by this utility model.

[0034] Figure 7 This is a schematic diagram of the online cleaning and protection device for the circular cutter and the assembly structure of the cutting drum provided in Embodiment 4 of this utility model.

[0035] In the diagram: 1. Air jet cleaning assembly; 2. Mounting base plate; 3. Fixed hanging post; 4. Scraper blade; 5. Swing arm; 6. Short hanging post; 7. Tension spring; 8. Swing arm pivot; 9. Scraper blade assembly; 10. Support; 11. Drive mechanism housing; 12. Quick-connect pipe connector; 13. Air jet channel; 14. Air jet nozzle; 15. Sealing screw; 16. Airflow channel; 17. Vertical mounting plate; 18. Fixed cover; 19. Circular cutter; 20. Cutting guide rail; 21. Cutting drum; 22. Movable cover; 23. Ball-head handle; 24. Magnetic base; 25. Transparent observation window; 26. Felt block; 27. Scraper blade fixing screw; 28. Edge guard; 29. ​​Interference avoidance groove; 30. Support base. Detailed Implementation

[0036] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0037] Example 1

[0038] This embodiment provides an online cleaning and protection device for a circular cutter, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the component mounted on one side of the circular cutter 19 includes a mounting base plate 2, an air jet cleaning assembly 1, a protective cover assembly, and a pair of scraper assemblies 9 that are elastically clamped onto the circular cutter 19.

[0039] The scraper assembly 9 is rotatably mounted on one side of the mounting base plate 2, and is used to scrape and clean the circular cutter 19 using elastic clamping force. The air jet cleaning assembly 1 is located on the other side of the mounting base plate 2, and is used to clean and cool the circular cutter 19 after scraping and cleaning using compressed air. The protective cover assembly covers the outside of the scraper assembly and the air jet cleaning assembly, and is used for protection and dust buffering.

[0040] Specifically, such as Figure 1 and Figure 2 As shown, in order to achieve adaptive adjustment of clamping force, the scraper assembly 9 includes a tension spring 7, a swing arm 5, a scraper blade 4, a scraper blade fixing screw 27, a swing arm pivot 8, and a short hanging post 6.

[0041] The scraper blade 4 is detachably mounted on the movable end of the swing arm 5 via the scraper blade fixing screw 27, and the fixed end of the swing arm 5 is rotatably connected to the mounting base plate 2 via the swing arm pivot 8.

[0042] The short hanging post 6 is disposed on the fixed end of the swing arm 5 and located outside the swing arm pivot 8, for hooking one end of the tension spring 7. The mounting base plate 2 is provided with a fixed hanging post 3 for hooking one end of the tension spring 7. The fixed hanging post 3 is located between a pair of swing arms 5.

[0043] Specifically, such as Figure 3 As shown, the jet cleaning assembly 1 includes a jet block with an internal airflow channel 16, and a quick-connect fitting 12 is installed at the air inlet of the airflow channel 16. The quick-connect fitting 12 is connected to a high-pressure air source via a pipe. A sealing screw 15 is provided at the machined end of the airflow channel 16.

[0044] One end of the jet block has a jet groove 13 for accommodating the circular cutter 19. The airflow channel 16 is connected to the jet groove 13 via a jet nozzle 14. The jet nozzle 14 is used to spray compressed air from the airflow channel 16 onto both sides of the circular cutter 19.

[0045] In this embodiment, in order to perform scraping, air cleaning and cooling on the circular cutter in sequence, the air cleaning component 1 is located directly opposite the scraper component 9, and the mating surfaces of the pair of scraper components 9 are located in the same plane as the air groove 13, so that the circular cutter 19 passes through the pair of scraper components 9 and the air groove 13 in sequence.

[0046] The fixed hanging post 3, the short hanging post 6, and the swing arm pivot 8 are all equipped with a deep slotted structure to facilitate the removal of screws. The fixed hanging post 3 and the short hanging post 6 are equipped with annular slotted structures to facilitate the installation of tension springs.

[0047] Specifically, the usage method and rotation steps of the scraper assembly are as follows:

[0048] like Figure 2 As shown, the solid line represents the scraper assembly 9 in the scraping working position. Pull the right-side swing arm 5 counterclockwise to bring the scraper blade 4 to the position indicated by the dashed line.

[0049] At this position, the tension spring 7 is in its maximum tension state, which is the dead point position, connected by the axis of the fixed hanging post 3, the swing arm pivot 8, and the short hanging post 6. Continue to rotate the right swing arm 5 counterclockwise until it passes through the dead point position. At this time, the scraper assembly 9 moves away from the scraping working position under the tension of the tension spring 7.

[0050] Similarly, when it is necessary to clean the circular cutter, pull the swing arm 5 clockwise again. After passing the dead point of the tension spring, the scraper blade 4 can be put back into the scraping working state.

[0051] Example 2

[0052] This embodiment provides an online cleaning and protection device for a circular cutter. The main difference from Embodiment 1 is that, in this embodiment, to improve the service life of the scraper blade, the scraper blade 4 is a triangular carbide scraper blade, with one side of two triangular carbide scraper blades elastically fitted together. There is a clearance fit between the scraper blade 4 and the scraper blade fixing screw 27, with a clearance value of 0.1mm to 0.15mm. There is also a clearance fit between the swing arm pivot 8 and the fixed end of the swing arm 5, with a clearance value of 0.1mm to 0.15mm.

[0053] This involves determining the critical values ​​for ensuring that the swing arm 5 can move slightly on the optical axis of the swing arm pivot 8, and for ensuring that the scraper blade 4 can move slightly axially on the scraper blade fixing screw 27. Values ​​that are too small can easily lead to compression, resulting in stiff rotation of the scraper blade and swing arm. Values ​​that are too large will cause excessive axial movement, affecting the performance of the scraper assembly.

[0054] Example 3

[0055] This embodiment provides an online cleaning and protection device for a circular cutter. The main difference between this embodiment and Embodiment 1 is that:

[0056] like Figure 5 and Figure 6 As shown, the protective cover assembly includes a fixed cover 18 and a movable cover 22 that can be flipped onto the fixed cover 18. The movable cover 22 is also provided with a transparent observation window 25 for easy observation of the circular cutter.

[0057] like Figure 5 As shown, baffles 28 are respectively installed inside the fixed cover 18 and the movable cover 22. The baffles 28 are designed as a whole according to the shape of the circular cutter 19 and its scraper assembly 9, retaining a small gap. During operation, the closed cutter protective cover can buffer more dust and reduce pollution in the smoke-generating section.

[0058] Specifically, the movable cover 22 and the fixed cover 18 are connected by pins, enabling the movable cover to rotate flexibly. A magnetic base 24 with a ball-head handle 23 is installed on the transparent observation window 25, which can interact with the slitting guide rail 20 located next to the circular cutter 19 to ensure a reliable closing force after the movable cover is rotated downwards, maintaining the closed state of the protective cover assembly.

[0059] After the movable cover is opened to its maximum tilt angle, it remains open by its own weight. At the same time, pulling the swing arm on one side of the scraper assembly allows for easy replacement of the circular cutter 19.

[0060] Specifically, the maximum rotation angle of the movable cover from closed to fully open is 210 degrees. The inner cavities of both the fixed cover and the movable cover are also provided with two sets of felt blocks 26. These felt blocks 26 adhere to both sides of the circular cutter 19, further cleaning the circular cutter 19 and reducing contamination.

[0061] For ease of installation, a support 10 for connecting the mounting base plate 2 is also included, the support 10 being fixed to the drive mechanism housing 11 of the circular cutter.

[0062] Meanwhile, in order to avoid interference, corresponding interference avoidance grooves 29 are provided on the movable cover 22 and the fixed cover 18 respectively.

[0063] Example 4

[0064] This embodiment provides an online cleaning and protection device for a circular cutter. The main difference from Embodiment 1 is that in this embodiment: Figure 7 As shown, in actual production, to reduce pollution, the circular cutter 19 and the slitting guide rail 20 can be installed below the cutting drum 21. The slitting guide rail 20, the circular cutter 19, and the cutting drum 21 are then fixed to the vertical mounting plate 17.

[0065] The jet cleaning assembly 1, the scraper assembly 9, and the protective cover assembly are respectively mounted on the side of the circular cutter 19 via the support base 30, and are located together on the lower right side of the cutting drum 21.

[0066] That is, by changing the installation position, it can be ensured that the dust particles cut by the circular cutter 19 and the particles cleaned by the scraper assembly 9 can fall into the protective cover assembly by gravity, thereby further avoiding pollution of the smoke-generating section.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A circular cutter online cleaning and protection device, installed on one side of a circular cutter, characterized in that: Includes a mounting base plate, a jet cleaning assembly, a protective cover assembly, and a pair of scraper assemblies that are elastically clamped onto the circular cutter; The scraper assembly is rotatably mounted on one side of the mounting base plate and is used to scrape and clean the circular cutter by relying on elastic clamping force. The jet cleaning component is located on the other side of the mounting base plate and is used to clean and cool the circular cutter after scraping and cleaning by using compressed air. The protective cover assembly covers the outside of the scraper assembly and the jet cleaning assembly, and is used to protect against and buffer dust.

2. The online cleaning and protection device for circular cutters according to claim 1, characterized in that: The scraper assembly includes a tension spring, a swing arm, and scraper blades; The scraper blade is disposed at the movable end of the swing arm, and the fixed end of the swing arm is rotatably connected to the mounting base plate; The two ends of the tension spring are respectively connected to the mounting base plate and the fixed end of the swing arm, so that the scraper blades of the pair of scraper assemblies are elastically clamped on the circular cutter.

3. The online cleaning and protection device for a circular cutter according to claim 2, characterized in that: The scraper blade is a triangular carbide scraper blade, and two triangular carbide scraper blades are elastically fitted together on one side.

4. The online cleaning and protection device for a circular cutter according to claim 2 or 3, characterized in that: The scraper blade is connected to the swing arm by a scraper blade fixing screw, and there is a clearance fit between the scraper blade and the scraper blade fixing screw, with a clearance value of 0.1mm to 0.15mm.

5. The online cleaning and protection device for a circular cutter according to claim 2, characterized in that: The fixed end of the swing arm is connected to the mounting base plate via a swing arm pivot. The swing arm pivot and the fixed end of the swing arm are fitted with a clearance of 0.1mm to 0.15mm.

6. The online cleaning and protection device for a circular cutter according to claim 1, 2, 3, or 5, characterized in that: The jet cleaning assembly includes a jet block with an internal airflow channel, and a quick-connect fitting is installed at the air inlet of the airflow channel. One end of the jet block is provided with a jet groove to accommodate the circular cutter, and the two air outlets of the airflow channel correspond to the two sides of the circular cutter respectively.

7. The online cleaning and protection device for a circular cutter according to claim 6, characterized in that: The air jet cleaning assembly is located directly opposite the scraper assembly, and the mating surfaces of the pair of scraper assemblies are in the same plane as the air jet channel, so that the circular cutter passes through the pair of scraper assemblies and the air jet channel in sequence.

8. The online cleaning and protection device for a circular cutter according to claim 1, characterized in that: It also includes a support for connecting the mounting base plate, the support being fixed to the drive mechanism housing of the circular cutter.

9. The online cleaning and protection device for a circular cutter according to claim 8, characterized in that: The protective cover assembly includes a fixed cover and a movable cover that can be flipped onto the fixed cover. The movable cover is provided with a magnetic base for adsorbing the fixed cover. The inner side of the movable cover and the inner side of the fixed cover are respectively provided with baffles for catching dust.

10. The online cleaning and protection device for a circular cutter according to claim 9, characterized in that: The movable cover is also provided with a transparent observation window for easy observation of the circular cutter.

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