Device for automatically marking cigarette combustion termination position

Abstract

The invention relates to the technical field of cigarette detection, and provides a device for automatically marking a cigarette combustion termination position, which comprises a rotating assembly suitable for placing a cigarette and driving the cigarette to rotate; the smoke exhaust assembly is provided with a first station and a second station; at the first station, the supporting part on the smoke discharging assembly extends to the bottom of the rotating assembly so as to be used for supporting cigarettes; at the second station, the supporting part on the smoke discharging assembly moves to avoid the cigarettes; and the ink jetting assembly is arranged on one side of the rotating assembly and is configured to be used for jetting ink to the cigarettes in the process that the cigarette discharging assembly is located at the first station and the rotating assembly drives the cigarettes to rotate. According to the device for automatically marking the cigarette combustion termination position, by integrating the rotating assembly, the smoke discharging assembly and the ink jetting assembly, full-automatic operation of cigarette combustion termination position marking is achieved, and the detection efficiency and precision are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette detection, in particular to a device for automatically marking the end position of cigarette burning. Background Art

[0002] During cigarette production quality control, testing key chemical indicators of cigarette combustion (such as nicotine and tar) relies on precise simulation of the combustion process using a smoking machine in the laboratory. Specifically, the smoking machine controls the cigarette's combustion termination point to capture particulate matter and analyze its chemical composition. The accuracy of the combustion termination point directly affects the amount of particulate matter captured and the accuracy of subsequent test results, making it a critical technical step in determining the reliability of test data.

[0003] Currently, laboratories typically use a soft brush tip to manually mark the end of a cigarette, then wrap a cotton thread around the marked line. When the cigarette reaches the marked line, the cotton thread burns, and the capture of particulate matter stops. Manual marking typically only marks one side of the cigarette, while the cotton thread wraps around the entire circumference, making it difficult to accurately align the marking position. Failure to properly control the marking force can easily cause the cigarette to be scratched or punctured, resulting in waste. A single experiment typically involves 100 or more cigarettes, making manual marking time-consuming and laborious. Furthermore, the accuracy is low, reaching only ±0.5mm, which reduces the accuracy of the test data. Summary of the Invention

[0004] The present invention provides a device for automatically marking the end-of-burning position of a cigarette, which is used to solve the problem that the end-of-burning position of a conventional cigarette needs to be manually marked, which is time-consuming, labor-intensive and has low precision.

[0005] The present invention provides a device for automatically marking the end position of cigarette burning, comprising: A rotating assembly, suitable for placing cigarettes and driving the cigarettes to rotate; The smoke exhaust assembly has a first station and a second station; in the first station, the support portion of the smoke exhaust assembly extends to the bottom of the rotating assembly to support the cigarette; in the second station, the support portion of the smoke exhaust assembly moves away from the cigarette; The inkjet assembly is arranged on one side of the rotating assembly and is configured to spray ink toward the cigarette when the smoke exhaust assembly is in the first working position and the rotating assembly drives the cigarette to rotate.

[0006] According to the present invention, a device for automatically marking the end position of cigarette burning is provided, wherein the rotating assembly comprises: substrate; A limiting mechanism is rotatably disposed on the base plate and is suitable for placing cigarettes; The driving mechanism is arranged on the base plate and is in driving connection with the limiting mechanism, and is suitable for driving the limiting mechanism to rotate in coordination with the cigarette.

[0007] According to the present invention, a device for automatically marking the end position of cigarette burning is provided, wherein the limiting mechanism comprises: A limiting cylinder is connected to the base plate to form a mounting hole; A clamp, a portion of which is disposed in the mounting hole and is used to be sleeved around the cigarette; The first pulley is sleeved on the other part of the clamp and is connected to the driving mechanism through a synchronous belt.

[0008] According to the present invention, a device for automatically marking the end position of cigarette burning is provided, wherein the driving mechanism comprises: a motor connected to the substrate; The second pulley is sleeved on the rotating shaft of the motor, and the synchronous belt is sleeved on the first pulley and the second pulley.

[0009] According to the device for automatically marking the end position of cigarette burning provided by the present invention, the smoke exhaust assembly comprises: a supporting plate and a cylinder; the supporting plate is connected to the movable end of the cylinder; At the first station, the cylinder drives the support plate to extend to the bottom of the rotating assembly to support the cigarette; At the second station, the cylinder drives the support plate to move out of the bottom of the rotating assembly to discharge the cigarettes in the rotating assembly.

[0010] According to the device for automatically marking the end position of cigarette burning provided by the present invention, the smoke exhaust assembly further comprises: a scale bar and an adjusting screw; The scale bar is connected to the movable end of the cylinder, and the supporting plate is movably connected to the scale bar through the adjusting screw, so that the supporting plate and the scale bar can be locked or loosened by the adjusting screw.

[0011] According to the device for automatically marking the end position of cigarette combustion provided by the present invention, the scale bar extends along the length direction of the cigarette, and the support plate is movable along the extension direction of the scale bar via the adjusting screw.

[0012] According to the device for automatically marking the end position of burning of a cigarette provided by the present invention, the inkjet assembly comprises: an ink bag, an ink tube and a nozzle; The nozzle is arranged on one side of the rotating assembly, facing the side of the cigarette; the ink bag is connected with the nozzle through an ink tube.

[0013] According to the device for automatically marking the end position of cigarette burning provided by the present invention, the inkjet assembly further comprises: a support plate; The support plate is connected to the bottom of the base plate, and a first support portion for accommodating the ink bag and a second support portion for accommodating the nozzle are respectively formed on both sides of the support plate.

[0014] According to the present invention, a device for automatically marking the end position of cigarette burning is provided, which further comprises: The collection box is arranged at the bottom of the rotating assembly and is used to collect cigarettes discharged by the rotating assembly when the smoke exhaust assembly moves to the second station.

[0015] The automatic marking device for the end of cigarette burning provided by the present invention realizes the fully automated operation of marking the end of cigarette burning by integrating a rotating component, a smoke exhaust component and an inkjet component, significantly improving the detection efficiency and accuracy. The rotating component drives the cigarette to rotate at a constant speed, and the inkjet component sprays the end line circumferentially on the surface of the cigarette to ensure that the marking line completely surrounds the cigarette, completely solving the problem of position deviation between traditional single-sided marking and cotton thread winding. The smoke exhaust component realizes the continuous operation of automatic positioning, rotation marking and removal of cigarettes by quickly switching between the first station (supporting the cigarette) and the second station (avoiding the cigarette), and coordinating the control of the rotating component and the inkjet component. At the same time, inkjet technology is used to replace the traditional pen tip marking, and the marking line is formed on the surface of the cigarette in a non-contact manner, completely eliminating the risks of cigarette paper scratching and tobacco structure damage caused by uneven manual force, reducing the scrap rate of experimental samples, and is particularly suitable for the precision marking requirements of high-permeability cigarette paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is one of the schematic diagrams of the device for automatically marking the end position of cigarette burning provided by the present invention.

[0018] Figure 2 This is the second schematic diagram of the device for automatically marking the end position of cigarette burning provided by the present invention.

[0019] Reference numerals: 1. Rotating assembly; 11. Base plate; 12. Limiting cylinder; 13. Clamp; 14. First pulley; 15. Synchronous belt; 16. Motor; 17. Second pulley; 2. Inkjet assembly; 21. Ink sac; 22. Ink tube; 23. Support plate; 24. Printhead; 3. Smoke exhaust assembly; 31. Support plate; 32. Scale bar; 33. Adjusting screw; 34. Cylinder; 4. Cigarettes; 5. Collection box. DETAILED DESCRIPTION

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0021] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0022] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0023] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0024] The following combination Figure 1 The present invention describes a device for automatically marking the end point of burning of cigarettes.

[0025] An embodiment of the present invention provides a device for automatically marking the end-of-burning position of a cigarette, comprising: a rotating assembly 1, a smoke exhaust assembly 3, and an inkjet assembly 2. The rotating assembly 1 is adapted to receive a cigarette 4 and drive the cigarette 4 to rotate; the smoke exhaust assembly 3 has a first station and a second station; in the first station, a support portion on the smoke exhaust assembly 3 extends to the bottom of the rotating assembly 1 to support the cigarette 4; in the second station, the support portion on the smoke exhaust assembly 3 moves away from the cigarette 4; the inkjet assembly 2 is disposed on one side of the rotating assembly 1 and is configured to spray ink onto the cigarette 4 while the smoke exhaust assembly 3 is in the first station and the rotating assembly 1 is driving the cigarette 4 to rotate.

[0026] In this embodiment, the rotating component 1 is designed with a placement position that adapts to the shape and size of the cigarette 4, ensuring that the cigarette 4 can be placed firmly on it. When the start signal is received, the rotating component 1 will drive the cigarette 4 to rotate at a stable speed, providing a stable motion platform for subsequent marking operations, so that the subsequent inkjet process can accurately cover all circumferential positions of the cigarette 4, ensuring the integrity and uniformity of the marking line.

[0027] The smoke exhaust component 3 has two states: the first station and the second station. When in the first station, the support part on the smoke exhaust component 3 extends precisely to the bottom of the rotating component 1, providing a stable and reliable support force for the cigarette 4 placed on the rotating component 1, avoiding the cigarette 4 from tipping over, shaking, and other unstable situations due to lack of support during the rotation process, ensuring that the cigarette 4 maintains a good posture for marking operations; and when the cigarette 4 needs to be replaced or the marked cigarette 4 needs to be removed, the smoke exhaust component 3 quickly switches to the second station. At this time, the support part moves in time to avoid the position of the cigarette 4, making way for the smooth entry and exit of the cigarette 4, and realizing the seamless connection of the automatic positioning of the cigarette 4 in the device, the rotation marking, and the removal of the cigarette 4.

[0028] The inkjet assembly 2 is aimed at the surface of a rotating cigarette 4. While the smoke exhaust assembly 3 is in the first position and the rotating assembly 1 is rotating the cigarette 4, the inkjet assembly 2 precisely sprays ink onto the surface of the cigarette 4 according to the preset marking program and parameters, creating a clear and durable end-of-burn mark. Thanks to the uniform speed of the rotating assembly 1, the inkjet assembly is able to evenly spray ink along the circumference of the cigarette 4, creating a complete end-of-burn mark.

[0029] The automatic cigarette burnout mark device provided by the present invention integrates a rotating assembly 1, a smoke exhaust assembly 3, and an inkjet assembly 2 to achieve fully automated operation for marking the burnout end position of cigarettes 4, significantly improving detection efficiency and accuracy. The rotating assembly 1 drives the cigarette 4 in uniform rotation, while the inkjet assembly 2 sprays a circumferential end line on the surface of the cigarette 4, ensuring that the marking line completely encircles the cigarette 4. This completely resolves the positional deviation issues associated with traditional single-sided marking and cotton thread wrapping. The smoke exhaust assembly 3 rapidly switches between the first station (supporting the cigarette 4) and the second station (avoiding the cigarette 4), coordinated with the rotating assembly 1 and inkjet assembly 2, to achieve continuous automatic positioning, rotational marking, and removal of the cigarette 4. Furthermore, inkjet technology replaces traditional pen marking, creating a non-contact marking line on the surface of the cigarette 4. This completely eliminates the risks of uneven manual force application, such as paper rupture and tobacco structure damage, and reduces the scrap rate of experimental samples. The device is particularly suitable for the precise marking requirements of high-permeability cigarette paper.

[0030] In some embodiments, as Figure 1 As shown, the rotating assembly 1 includes a base plate 11, a limiting mechanism, and a driving mechanism. The limiting mechanism is rotatably mounted on the base plate 11 and is suitable for accommodating cigarettes 4. The driving mechanism is mounted on the base plate 11 and is in transmission connection with the limiting mechanism, and is suitable for driving the limiting mechanism to rotate in conjunction with the cigarettes 4.

[0031] When the drive mechanism is activated, the power it generates is transmitted to the limiting mechanism via the transmission connection, thereby driving the limiting mechanism and the cigarette 4 to rotate at a uniform and stable speed. This design of the rotating assembly 1 not only ensures the stable rotation of the cigarette 4, but also facilitates precise control of the rotation speed according to actual needs, creating an ideal condition for the inkjet assembly 2 to form a complete and uniform end-of-burn mark on the surface of the cigarette 4.

[0032] In this embodiment, the limiting mechanism includes a limiting cylinder 12, a clamp 13, and a first pulley 14. The limiting cylinder 12 is connected to the base plate 11 and defines a mounting hole. A portion of the clamp 13 is disposed in the mounting hole and is adapted to fit over the cigarette 4. The first pulley 14 is mounted on another portion of the clamp 13 and is connected to the drive mechanism via a timing belt 15.

[0033] The automatic marking device for the end-of-burn position of cigarettes (4) can be used in conjunction with a hopper to automatically mark cigarettes (4). When a single cigarette (4) from the hopper falls into the retaining cylinder (12), the smoke exhaust assembly (3) moves to the first station. Its support extends to the bottom of the rotating assembly (1), holding the cigarette (4) and providing stable support for subsequent marking operations. Next, the clamp (13) automatically clamps the cigarette (4). At this point, the drive mechanism drives the first pulley (14) via the timing belt (15), causing the clamp (13) and the cigarette (4) to rotate one full revolution around the central axis. During this process, the inkjet assembly (2) operates synchronously, forming a uniform, clear black line on the surface of the cigarette (4) as it rotates, completing the marking of the end-of-burn position. Finally, the smoke exhaust assembly (3) moves to the second station. Its support clears the cigarette (4), allowing it to automatically fall from the retaining cylinder (12) under the influence of gravity, ready for the next cigarette (4) to be marked. The entire device's workflow is highly automated, achieving automatic positioning, marking, and removal of the cigarette (4) through precise mechanical design and coordinated control logic.

[0034] In addition, if Figure 1 As shown, the driving mechanism includes: a motor 16 and a second pulley 17. The motor 16 is connected to the base plate 11 as a power source, providing stable power support for the entire rotating assembly 1. The second pulley 17 is mounted on the rotating shaft of the motor 16. When the motor 16 is started, the rotating shaft drives the second pulley 17 to rotate. The synchronous belt 15 is mounted on the first pulley 14 and the second pulley 17 to form a closed-loop transmission system. When the second pulley 17 rotates under the drive of the motor 16, the transmission action of the synchronous belt 15 drives the first pulley 14 to rotate synchronously. Since the first pulley 14 is connected to the clamp 13, the clamp 13, driven by the first pulley 14, carries the cigarette 4 and performs stable rotation around the center axis.

[0035] In some embodiments, as Figure 1 As shown, the smoke exhaust assembly 3 includes a support plate 31 and a cylinder 34. The support plate 31 is connected to the movable end of the cylinder 34. In the first working position, the cylinder 34 drives the support plate 31 to extend to the bottom of the rotating assembly 1 to support the cigarettes 4. In the second working position, the cylinder 34 drives the support plate 31 to move out of the bottom of the rotating assembly 1 to discharge the cigarettes 4 in the rotating assembly 1.

[0036] Specifically, when a cigarette 4 needs to be marked, the cylinder 34 starts and drives the support plate 31 to move to the bottom of the rotating assembly 1, that is, to the first station. At this time, the support plate 31 supports the cigarette 4, ensuring that the cigarette 4 remains stable during the rotation process and preventing it from falling due to gravity, providing a solid foundation for subsequent marking operations. After the marking is completed, the cylinder 34 drives the support plate 31 to move out of the bottom of the rotating assembly 1 and enter the second station, causing the cigarette 4 to lose support and fall from the rotating assembly 1 under the action of gravity, thereby achieving automatic discharge of the cigarette 4 and preparing for the marking of the next cigarette 4. By driving the support plate 31 to switch quickly between the two stations through the cylinder 34, the smoke exhaust assembly 3 can efficiently cooperate with the rotating assembly 1 and the inkjet assembly 2 to complete the automatic positioning, marking and removal process of the cigarette 4, greatly improving the working efficiency and automation level of the entire device, reducing manual intervention, and enhancing the stability and reliability of the equipment.

[0037] In this embodiment, Figure 1 As shown, the smoke exhaust assembly 3 also includes: a scale bar 32 and an adjusting screw 33; the scale bar 32 is connected to the movable end of the cylinder 34, and the support plate 31 is movably connected to the scale bar 32 through the adjusting screw 33, so as to lock or loosen the support plate 31 and the scale bar 32 through the adjusting screw 33.

[0038] Specifically, the scale bar 32 extends along the length of the cigarette 4, and the support plate 31 is movable along the extension direction of the scale bar 32 via an adjustment screw 33. This design allows the position of the support plate 31 to be flexibly adjusted to accommodate cigarettes 4 of varying lengths (or to accommodate different marking positions), ensuring that the support plate 31 accurately supports the bottom of the cigarette 4. Furthermore, when the cigarette 4 needs to be removed, it can be quickly removed without affecting its descent. By adjusting the screw 33, the operator can easily lock or loosen the connection between the support plate 31 and the scale bar 32, achieving precise adjustment of the support plate 31's position, thereby improving the device's adaptability and versatility, meeting the marking requirements for cigarettes 4 of varying sizes.

[0039] In some embodiments, as Figure 1 As shown, the inkjet assembly 2 comprises an ink sac 21, an ink tube 22, and a nozzle 24. The nozzle 24 is positioned on one side of the rotating assembly 1, facing the cigarette 4, ensuring precise ink delivery to the surface of the cigarette 4. The ink sac 21 is connected to the nozzle 24 via the ink tube 22. Ink is transported from the ink sac 21 through the ink tube 22 to the nozzle 24, where it is then ejected, completing the marking process. This approach enables the inkjet assembly 2 to stably and efficiently create clear marking lines on cigarettes 4, ensuring accurate and consistent marking.

[0040] To facilitate installation, the inkjet assembly 2 also includes a support plate 23 connected to the bottom of the base plate 11. A first support portion for accommodating the ink sac 21 and a second support portion for accommodating the nozzle 24 are formed on either side of the support plate 23. The support plate 23 not only provides stable support for the ink sac 21 and nozzle 24, but also facilitates installation of the inkjet assembly 2. It also helps maintain a stable connection between the ink sac 21 and nozzle 24, ensuring smooth ink delivery from the ink sac 21 to the nozzle 24. The first and second support portions, respectively, accommodate the ink sac 21 and nozzle 24, ensuring stability of the ink supply system and accurate positioning of the nozzle 24, thereby improving inkjet accuracy and consistency.

[0041] Based on the above embodiments, in some embodiments, such as Figure 2 As shown, the automatic cigarette burning end position marking device further comprises: a collection box 5. The collection box 5 is arranged at the bottom of the rotating assembly 1.

[0042] When the support plate 31 of the smoke exhaust assembly 3 is moved out of the bottom of the rotating assembly 1 (i.e., to the second working position) by the cylinder 34, the marked cigarettes 4 fall from the rotating assembly 1 under the action of gravity. At this time, the collection box 5 is located directly below the rotating assembly 1 and can accurately catch the fallen cigarettes 4, ensuring orderly collection of the cigarettes 4.

[0043] The collection box 5 not only facilitates the sorting and subsequent processing of marked cigarettes 4, but also prevents the cigarettes 4 from being scattered randomly after marking, helping to maintain a clean working environment and improve work efficiency. Furthermore, the collection box 5 can be designed to be detachable, making it convenient for operators to regularly clean and replace it to meet the collection needs of different numbers of cigarettes 4.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for automatically marking the end position of cigarette burning, characterized in that: include: A rotating assembly, suitable for placing cigarettes and driving the cigarettes to rotate; A smoke exhaust assembly, the smoke exhaust assembly having a first station and a second station; At the first station, the support portion of the smoke exhaust assembly extends to the bottom of the rotating assembly to support the cigarette; At the second station, the supporting portion of the smoke exhaust assembly moves away from the cigarette; The inkjet assembly is arranged on one side of the rotating assembly and is configured to spray ink toward the cigarette when the smoke exhaust assembly is in the first working position and the rotating assembly drives the cigarette to rotate.

2. The automatic cigarette burning end position marking device according to claim 1 is characterized in that: The rotating assembly comprises: substrate; A limiting mechanism is rotatably disposed on the base plate and is suitable for placing cigarettes; The driving mechanism is arranged on the base plate and is in driving connection with the limiting mechanism, and is suitable for driving the limiting mechanism to rotate in coordination with the cigarette.

3. The automatic cigarette burning end position marking device according to claim 2, characterized in that: The limiting mechanism includes: A limiting cylinder is connected to the base plate to form a mounting hole; A clamp, a portion of which is disposed in the mounting hole and is used to be sleeved around the cigarette; The first pulley is sleeved on the other part of the clamp and is connected to the driving mechanism through a synchronous belt.

4. The automatic cigarette burning end marking device according to claim 3 is characterized in that: The driving mechanism comprises: a motor connected to the substrate; The second pulley is sleeved on the rotating shaft of the motor, and the synchronous belt is sleeved on the first pulley and the second pulley.

5. The automatic cigarette burning end marking device according to claim 1 is characterized in that: The smoke exhaust assembly includes: a support plate and a cylinder; the support plate is connected to the movable end of the cylinder; At the first station, the cylinder drives the support plate to extend to the bottom of the rotating assembly to support the cigarette; At the second station, the cylinder drives the support plate to move out of the bottom of the rotating assembly to discharge the cigarettes in the rotating assembly.

6. The automatic cigarette burning end position marking device according to claim 5, characterized in that: The smoke exhaust assembly further comprises: a scale bar and an adjustment screw; The scale bar is connected to the movable end of the cylinder, and the supporting plate is movably connected to the scale bar through the adjusting screw, so that the supporting plate and the scale bar can be locked or loosened by the adjusting screw.

7. The device for automatically marking the end position of cigarette burning according to claim 6, characterized in that: The scale bar extends along the length direction of the cigarette, and the supporting plate is movable along the extending direction of the scale bar via the adjusting screw.

8. The device for automatically marking the end position of cigarette burning according to any one of claims 1 to 7, characterized in that: The inkjet assembly includes: an ink bag, an ink tube and a nozzle; The nozzle is arranged on one side of the rotating assembly, facing the side of the cigarette; the ink bag is connected with the nozzle through an ink tube.

9. The automatic cigarette burning end position marking device according to claim 8, characterized in that: The inkjet assembly further includes: a support plate; The support plate is connected to the bottom of the base plate, and a first support portion for accommodating the ink bag and a second support portion for accommodating the nozzle are respectively formed on both sides of the support plate.

10. The device for automatically marking the end position of cigarette burning according to any one of claims 1 to 7, characterized in that: Also includes: The collection box is arranged at the bottom of the rotating assembly and is used to collect cigarettes discharged by the rotating assembly when the smoke exhaust assembly moves to the second station.

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