Dust collection device for cigarette making machine

Abstract

The utility model relates to the technical field of cigarette making equipment, in particular to a dust collection device for a cigarette making machine. The device comprises a flow guide piece provided with a flow guide channel and a negative pressure air suction piece. The flow guide piece comprises a first flow guide part and a second flow guide part, and a cavity part capable of accommodating the glue applicator is arranged between the first flow guide part and the second flow guide part; the flow guide channel comprises a first flow guide channel which is arranged on the first flow guide part and communicates with the fixing plate, the gap part and the small pressing plate; the second flow guide channel is arranged on the second flow guide part and is communicated with the small pressing plate and the large pressing plate; and the second flow guide channel, the cavity part, the first flow guide channel and the negative pressure air suction piece are communicated in sequence. According to the invention, through the arrangement of the flow guide channel and the cavity part, the whole road section where tobacco powder flies out is covered, and the dust collection effect is good; and meanwhile, a single channel is adopted for dust collection, so that the dust collection device has the characteristics of large adsorption capacity and high dust collection efficiency, the structural complexity of the dust collection device is reduced, and the dust collection device is simpler to manufacture and lower in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette making equipment, in particular to a dust suction device for a cigarette making machine. Background Art

[0002] The cigarette making machine is a high-speed rolling and splicing equipment in the cigarette industry. It is used in the cigarette production process. Its steps are as follows: the tobacco is transferred to the forming groove, where it encounters the double-rolled paper of the cigarette paper feeding reel; the tobacco and rolling paper pass under the tobacco gun tongue to begin to form the cigarette rod, and the rolling paper is pre-placed under the small pressing plate to receive the glue distributed by the glue applicator. The rolling paper with glue on the edge passes through the large pressing plate to determine the diameter of the cigarette rod. The cigarette rod passes under the heat sealer to dry the glue, and is finally closed to complete the rolling.

[0003] In such a cigarette rolling process, the tobacco bundle passes through the front bottom plate of the cigarette gun and enters the tobacco rod channel formed by the small pressure plate and the fixed plate. In this process, there are two compressions and one expansion, which will inevitably lead to the production of tobacco dust. At the same time, the tobacco bundle itself also contains a certain amount of tobacco dust. One side of the cigarette paper is curled to wrap the tobacco, and the other side is not curled, and after passing through the gap between the small pressure plate and the fixed plate, it is higher than the small pressure plate for the glue applicator to apply glue. Therefore, the tobacco dust will run out of the cigarette gun through the gap between the small pressure plate and the fixed plate, and accumulate on the small pressure plate, large pressure plate, fixed plate, and before and after the glue nozzle of the glue applicator, which will not only cause quality problems such as tobacco dust clamping, but also cause the cigarette paper to fail to roll successfully, resulting in a shutdown failure.

[0004] The patent document with publication number CN206380690U discloses a dust suction device for cleaning cigarette dust in front and behind the glue nozzle of a cigarette making machine, including a cigarette making machine air chamber and a dust suction hood. The dust suction hood is hinged to the cigarette making machine air chamber through a pin shaft, and the dust suction hood can rotate around the pin shaft within the range of 0° to 90°. The dust suction hood is respectively provided with a front-glue dust collecting chamber and a front-glue dust suction channel, as well as a rear-glue dust collecting chamber and a rear-glue dust suction channel. The dust suction hood is also provided with a horizontally arranged connecting channel, and the two ends of the connecting channel respectively connect the front-glue dust suction channel and the rear-glue dust suction channel. A radial through hole is provided on the pin shaft, and the radial through hole connects the connecting channel with the cigarette making machine air chamber.

[0005] In the existing technology, the smoke dust before and after gluing is removed through different dust suction channels respectively. The cross-sectional area of ​​a single dust suction channel is small, resulting in a small adsorption force and low dust suction efficiency. Moreover, this dust suction channel is not effective in dusting the smoke dust accumulated between the fixed plate, the small pressure plate, the large pressure plate, and the gaps. In addition, the design of the double dust suction channels also makes the structure of the dust hood more complicated and the manufacturing cost higher. Utility Model Content

[0006] The utility model aims to solve the above problems and provides a dust collection device for a cigarette making machine with a simple structure, which can effectively absorb cigarette dust accumulated on a fixed plate, a small pressing plate, a large pressing plate, in front of and behind the glue nozzle of a glue applicator, and in various gaps, and has a high dust collection efficiency.

[0007] The technical solution to the problem solved by the present invention is to provide a dust suction device for a cigarette making machine, the cigarette making machine comprising a forming groove, and a fixed plate, a small pressure plate, and a large pressure plate sequentially arranged on the forming groove along the direction of cigarette forming, a gap portion being provided between the fixed plate and the small pressure plate, and a glue applicator being provided between the small pressure plate and the forming groove; the dust suction device comprising a guide member provided with a guide channel, and a negative pressure suction member; the guide member comprising a first guide portion and a second guide portion, a cavity portion for accommodating the glue applicator being provided between the first guide portion and the second guide portion; the guide channel comprising a first guide channel arranged in the first guide portion and connected to the fixed plate, the gap portion and the small pressure plate; and a second guide channel arranged in the second guide portion and connected to the small pressure plate and the large pressure plate; the second guide channel, the cavity portion, the first guide channel, and the negative pressure suction member are sequentially connected.

[0008] As a preferred embodiment of the present invention, the first guide channel includes an inlet close to the cavity portion, and the second guide channel includes an outlet close to the cavity portion; a guide path is formed from the outlet to the inlet, and the glue applicator is not on the guide path.

[0009] As a preferred embodiment of the present invention, when the dust suction device is working, the horizontal plane where the glue applicator is located is higher than the horizontal plane where the guide path is located.

[0010] As a preferred embodiment of the present invention, the area of ​​the inlet is larger than the area of ​​the outlet.

[0011] As a preferred embodiment of the present invention, the first guide channel includes a first adsorption port connected to the fixed plate and the gap portion, and a second adsorption port connected to the small pressure plate and the gap portion, and the dimension of the second adsorption port perpendicular to the cigarette forming direction is smaller than the dimension of the first adsorption port perpendicular to the cigarette forming direction.

[0012] As a preferred embodiment of the present invention, the dust suction device also includes a flow collecting member provided with a flow collecting channel, the flow collecting member is arranged between the flow guide member and the cigarette making machine, the flow collecting channel is connected to the flow guide channel, and the size of the flow collecting channel is smaller than the size of the flow guide channel.

[0013] As a preferred embodiment of the present invention, the collecting channel includes a first collecting channel connected only to the fixed plate, a second collecting channel connected only to the gap portion, and a third collecting channel connected only to the small pressure plate.

[0014] As a preferred embodiment of the present invention, the flow collecting member is fixedly mounted on the cigarette making machine, and the flow guiding member is detachably connected to the flow collecting member.

[0015] As a preferred embodiment of the present invention, the flow collecting member is provided with a positioning hole, and the flow guiding member is provided with a positioning column which can be inserted into the positioning hole; the free end of the positioning column abuts against the cigarette making machine after passing through the positioning hole, and the free end of the positioning column is provided with a flexible pad.

[0016] As a preferred embodiment of the present invention, one end of the guide channel is connected to the cigarette making machine and the other end is provided with a detection port; the dust suction device also includes a cover for closing the detection port, and the cover is detachably connected to the guide member.

[0017] Beneficial effects of the utility model:

[0018] 1. In this application, the provision of the guide channel and cavity section covers the entire section where smoke dust flies out, achieving full coverage of the fixed plate, gap section, small pressure plate, large pressure plate, and the front and rear of the glue applicator for dust collection, resulting in excellent dust collection effect. The second guide channel, cavity section, first guide channel, and negative pressure suction element are sequentially connected to achieve single-channel dust collection, which has the characteristics of strong adsorption force and high dust collection efficiency. This also reduces the structural complexity of the dust collection device, making its manufacture simpler and more cost-effective.

[0019] 2. In some embodiments, by adjusting the positional relationship between the openings at both ends of the cavity and the glue applicator, the path of the cigarette dust flowing in the cavity is staggered with the glue applicator, thereby preventing the cigarette dust from being blocked by the glue applicator and adhering to the glue applicator during the adsorption process.

[0020] 3. In some embodiments, based on the difference in the amount of smoke accumulated on the fixed plate and the amount of smoke accumulated on the small pressure plate found in the actual production process, the suction port of the first guide channel located on the fixed plate is adjusted to be larger in size and the suction port located on the small pressure plate is adjusted to be smaller in size, so as to provide corresponding appropriate adsorption force.

[0021] 4. In some embodiments, a flow collector is added, and the size of the collecting channel is adjusted to be smaller than that of the diversion channel. This allows the smoke to be drawn into the relatively small collecting channel as the intake port. This creates a stronger negative pressure over a smaller area, effectively drawing the material into the system and helping to reduce air leakage during the intake process. Furthermore, the inner diameter of the collecting and diversion channels is designed to increase from small to large, which appropriately slows the flow of smoke within the channel and prevents blockage caused by excessively fast smoke flow.

[0022] 5. In some embodiments, the current collecting member includes channels corresponding to the fixing plate, the gap portion, and the small pressure plate, respectively, so that the adsorption is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a dust collecting device for a cigarette making machine;

[0024] Figure 2 This is a schematic structural diagram of a flow guide member in a dust collection device for a cigarette making machine;

[0025] Figure 3 This is a schematic structural diagram of a current collecting member in a dust collecting device for a cigarette making machine;

[0026] Figure 4 This is a structural diagram of a cover plate in a dust collection device for a cigarette making machine;

[0027] In the figure: the guide member 1, the first guide portion 11, the second guide portion 12, the cavity portion 13, the positioning column 14, the first guide channel 21, the inlet 210, the first adsorption port 211, the second adsorption port 212, the second guide channel 22, the outlet 220, the collecting member 3, the positioning hole 31, the first collecting channel 41, the second collecting channel 42, the third collecting channel 43, and the cover plate 5. DETAILED DESCRIPTION

[0028] The following are specific implementations of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0029] A dust suction device for a cigarette making machine is installed on the forming station of the cigarette making machine and is used to remove impurities including cigarette dust on the forming station. The forming process of the cigarette making machine is a prior art, which generally includes a forming groove, and a fixed plate, a small pressure plate and a large pressure plate arranged in the forming groove in sequence along the direction of cigarette forming. The fixed plate, the small pressure plate and the large pressure plate respectively form a forming channel with the forming groove for cigarette forming. Among them, there is a gap between the fixed plate and the small pressure plate, and a glue applicator is provided between the small pressure plate and the forming groove. During the forming process, cigarette dust can easily escape through the gap and accumulate on the small pressure plate, the large pressure plate, the fixed plate, and before and after the glue nozzle of the glue applicator. Therefore, the present application designs a dust suction device that can cover the entire section where cigarette dust flies out.

[0030] like Figure 2As shown, the dust collection device first includes a flow guide member 1 with a flow guide channel. The flow guide member 1 includes a first flow guide portion 11 and a second flow guide portion 12. A cavity portion 13 for accommodating a glue applicator is provided between the first flow guide portion 11 and the second flow guide portion 12. The flow guide channel includes a first flow guide channel 21 provided in the first flow guide portion 11 and connected to the fixed plate, the gap portion, and one end of the small pressure plate; and a second flow guide channel 22 provided in the second flow guide portion 12 and connected to the other end of the small pressure plate and the large pressure plate. The second flow guide channel 22, the cavity portion 13, and the first flow guide channel 21 are connected in sequence. Furthermore, the device also includes a negative pressure suction member, with the first flow guide channel 21 connected to the negative pressure suction member.

[0031] The specific arrangement in this embodiment is as follows: according to the working direction of the dust collecting device, the first air guide portion 11 includes a top plate and a first bottom plate, wherein the two side surfaces of the first bottom plate (i.e. Figure 2 The lower side and right side of the first bottom plate are connected to the top plate through the edge sealing plate, and the cavity between the top plate and the first bottom plate forms the first guide channel 21. The side of the first bottom plate close to one end of the large pressure plate (i.e. Figure 2 The opening between the upper side surface in the figure) and the top plate is the inlet 210 of the first guide channel 21; the opening between the last side surface of the first bottom plate (i.e. the left side surface in Figure 2) and the top plate is the main guide port, which is connected to the negative pressure air suction part. A first through hole is also provided on the first bottom plate, and the position of the first through hole corresponds to the position of the lower end of the fixed plate and the small pressure plate; thus, the smoke residue at the fixed plate, the gap portion and the lower end of the small pressure plate can enter the first guide channel 21 through the first through hole, and then be removed by the negative pressure air suction part through the main guide port. The second guide part 12 shares a top plate with the first guide part 11, and the second guide part 12 also includes a second bottom plate, and the cavity between the top plate and the second bottom plate forms the second guide channel 22. The side surfaces of the second bottom plate are connected to the top plate through edge sealing plates, and only the side surface close to the fixed plate side (i.e. Figure 2 An opening is formed on the lower side of the first bottom plate, forming an outlet 220 of the second guide channel 22. A second through-hole is also formed on the second bottom plate, its location corresponding to the upper ends of the small and large pressing plates. This allows cigarette smoke at the upper ends of the large and small pressing plates to enter the second guide channel 22 through the second through-hole. A cavity 13 is formed between the top plate, the upper side of the first bottom plate, and the lower side of the second bottom plate. The glue nozzle of the glue applicator is located in this cavity 13.

[0032] It's worth noting that there are two types of cigarette making machines in the prior art: one with only one forming groove, and the other, such as the GD121H, with two symmetrical forming grooves. This embodiment illustrates a dust collection device adapted for use with two forming grooves. Therefore, the first and second through-holes defined in the first and second bottom plates of the first and second air guides 11, 12 are symmetrical, respectively, for allowing the tobacco dust from the two forming grooves to pass through. For a cigarette making machine with a single forming groove, only one through-hole is required.

[0033] The above structure covers the entire section of the smoke exhaust path, achieving full coverage of the fixed plate, gap, small pressure plate, large pressure plate, and the front and rear of the glue applicator, achieving excellent dust collection results. The second guide channel 22, cavity 13, first guide channel 21, and negative pressure suction element are sequentially connected, achieving single-channel dust collection, which has strong suction force and high dust collection efficiency. This reduces the structural complexity of the dust collection device, making it simpler to manufacture and lowering the cost.

[0034] In some embodiments, in order to prevent the cigarette dust in the second guide channel 22 from adhering to the glue applicator in the cavity portion 13 when entering the first guide channel 21 through the cavity portion 13, the internal structure of the cavity portion 13 can be adjusted to stagger the flow path of the cigarette dust in this part with the installation position of the glue applicator. That is, a guide path is formed from the outlet 220 to the inlet 210, and the glue applicator is not on the guide path. There are many ways to design it. For example, when the dust collection device is in the working position, the horizontal plane where the glue applicator is located is controlled to be different from the horizontal plane where the guide path is located. Preferably, the horizontal plane where the glue applicator is controlled is higher than the horizontal plane where the guide path is located, so that the cigarette dust on the guide path is difficult to float up and contact the glue applicator. On this basis, it is further preferred to control the vertical plane where the glue applicator is located to be different from the vertical plane where the guide path is located, and further stagger them.

[0035] Based on this, the specific setting method in this embodiment is: a convex plate is set on the part of the top plate located in the cavity part 13, according to Figure 2 In the middle direction, the upper and lower ends of the raised plate are respectively located at the outlet 220 and the inlet 210, and the glue applicator is located in the cavity between the top plate and the left or right side of the raised plate. Then, after the guide member 1 is installed on the cigarette making machine, the tobacco dust in the second guide channel 22 flows along the lower surface of the raised plate into the first guide channel 21. The horizontal plane of this tobacco dust flow path is below the horizontal plane of the glue applicator. During the flow process, tobacco dust will not accumulate on the glue applicator and cause adhesion and blockage.

[0036] In addition, based on this, in some embodiments, the area of ​​the inlet 210 is controlled to be larger than the area of ​​the outlet 220. The first guide channel 21 receives the cigarette dust from the second guide channel 22 and the cigarette dust from the front and back of the glue applicator respectively. The larger area of ​​the inlet 210 can avoid blockage. In this embodiment, the center part of the inlet 210 is used to receive the cigarette dust from the second guide channel 22, and the two side parts are used to receive the cigarette dust from the front and back of the glue applicator. Figure 2 Different from the figure, openings can be designed at the positions of the convex plate on both sides of the inlet 210 to facilitate the tobacco dust from the front and rear of the glue applicator to enter the first guide channel 21.

[0037] In some embodiments, taking into account the different amounts of cigarette butts accumulated on the fixed plate and the small pressure plate of the cigarette making machine, the first guide channel 21 includes a first adsorption port 211 connected to the fixed plate and the gap portion, and a second adsorption port 212 connected to the lower end of the small pressure plate and the gap portion. The dimension of the second adsorption port 212 perpendicular to the cigarette forming direction is smaller than the dimension of the first adsorption port 211 perpendicular to the cigarette forming direction. The larger adsorption area of ​​the first adsorption port 211 is suitable for the fixed plate with a larger amount of cigarette butts accumulated.

[0038] In some embodiments, the dust collecting device further includes a flow collecting member 3 having a flow collecting channel, such as Figure 1 and Figure 3 As shown, the flow collecting member 3 is positioned between the flow guide 1 and the cigarette making machine. Similar to the flow guide 1, the flow collecting member 3 also consists of two parts: a first collecting portion and a second collecting portion, connected to the first flow guide 11 and the second flow guide 12, respectively. The first collecting portion is provided with a first collecting channel corresponding to and connected to the first flow guide 21, while the second collecting portion is provided with a second collecting channel corresponding to and connected to the second flow guide 22. Furthermore, the first collecting channel is smaller than the first flow guide 21, while the second collecting channel is smaller than the second flow guide 22. With this design, the cigarette dust enters the collecting channel first and then the guide channel. Using the collecting channel with a smaller adsorption area as the suction port creates a stronger negative pressure over a smaller area, more effectively drawing the material into the system and helping to reduce air leakage during the suction process. Furthermore, the inner diameter of the collecting and guide channels increases from small to large, which appropriately slows the flow of cigarette dust within them and prevents blockage caused by excessive flow.

[0039] Among them, since the collecting channel is small, in order to ensure the accuracy of its adsorption, on this basis, in some embodiments, such as Figure 3As shown, the first collecting channel includes a first collecting channel 41 that is only connected to the fixed plate, a second collecting channel 42 that is only connected to the gap portion, and a third collecting channel 43 that is only connected to the lower end of the small pressure plate, ensuring accurate and complete adsorption through a one-to-one correspondence. Similarly, the second collecting channel includes a fourth collecting channel that is only connected to the upper end of the small pressure plate, and a fifth collecting channel that is only connected to the large pressure plate. In addition, in an embodiment in which the collecting member 3 is provided at the same time, and the first guide channel 21 includes a first adsorption port 211 and a second adsorption port 212, the second collecting channel 42 of the collecting member 3 is respectively connected to the first adsorption port 211 and the second adsorption port 212 of the guide member 1.

[0040] The flow collecting member 3 and the flow guide member 1 can be fixedly or detachably connected, preferably detachably connected. In some embodiments, the flow collecting member 3 is fixedly mounted on the cigarette making machine, and one end of the flow guide member 1 is hinged to the cigarette making machine, with the flow guide member 1 and the flow collecting member 3 being detachably connected. During use, rotating the flow guide member 1 to open it allows for convenient cleaning of the cigarette residue in the flow guide and collecting channels.

[0041] On the basis of this movable connection, in order to improve the accuracy of the correspondence between the collecting channel and the guiding channel, in some embodiments, such as Figure 2 and Figure 3 As shown, the flow collecting member 3 is provided with a positioning hole 31, and the flow guiding member 1 is provided with a positioning post 14 that can be inserted into the positioning hole 31. At the same time, since the flow collecting member 3 is relatively thin and the positioning hole 31 is relatively shallow, if the positioning post 14 is designed to be shorter than the depth of the positioning hole 31, although it will not abut and damage the cigarette making machine, it may have the problem of poor positioning effect. Therefore, in some embodiments, the length of the positioning post 14 is made substantially the same as the depth of the positioning hole 31, and the free end of the positioning post 14 can abut against the cigarette making machine after passing through the positioning hole 31, and a flexible pad is provided at the free end of the positioning post 14. While ensuring the positioning effect, it can also reduce the impact of the flow guiding member 1 on the fixed plate, small pressure plate, and large pressure plate when it is lowered, thereby increasing its service life.

[0042] In the above structure, the top plate of the flow guide 1 is completely closed. Even if the flow guide 1 can be rotated to open and clean the collecting channel in some embodiments, in some cases, some cigarette dust adhered to the glue of the applicator may adhere to the part of the top plate located in the collecting channel, making it difficult to reach into the collecting channel to clean it. Therefore, in some embodiments, such as Figure 1 and Figure 4 As shown, a detection port connected to the first guide channel 21 and the second guide channel 22 is provided on the top plate of the guide plate. At the same time, the dust collection device also includes a cover plate 5 for closing the detection port. The cover plate 5 is detachably connected to the guide member 1. At this time, the cigarette smoke is adhered to the cover plate 5, and the cover plate 5 can be disassembled and cleaned, which improves the convenience of cleaning.

[0043] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A dust collection device for a cigarette making machine, comprising a forming trough, and a fixed plate, a small pressing plate, and a large pressing plate arranged in sequence along the cigarette forming direction, a gap being defined between the fixed plate and the small pressing plate, and a glue applicator being provided between the small pressing plate and the forming trough; Its characteristics are: The dust collection device comprises a flow guide member (1) provided with a flow guide channel, and a negative pressure air suction member; The flow guide (1) comprises a first flow guide portion (11) and a second flow guide portion (12); a cavity portion (13) capable of accommodating the glue applicator is provided between the first flow guide portion (11) and the second flow guide portion (12); The guide channel comprises a first guide channel (21) provided in the first guide portion (11) and communicating with the fixed plate, the gap portion and the small pressure plate; and a second guide channel (22) provided in the second guide portion (12) and communicating with the small pressure plate and the large pressure plate. The second flow guiding channel (22), the cavity portion (13), the first flow guiding channel (21), and the negative pressure air suction member are connected in sequence.

2. The dust suction device for a cigarette making machine according to claim 1, characterized in that: The first flow guiding channel (21) includes an inlet (210) close to the cavity portion (13), and the second flow guiding channel (22) includes an outlet (220) close to the cavity portion (13); a flow guiding path is formed from the outlet to the inlet, and the glue applicator is not on the flow guiding path.

3. The dust suction device for a cigarette making machine according to claim 2, characterized in that: When the dust collecting device is working, the horizontal plane where the glue applicator is located is higher than the horizontal plane where the guide path is located.

4. The dust suction device for a cigarette making machine according to claim 2, characterized in that: The area of ​​the inlet (210) is larger than the area of ​​the outlet (220).

5. The dust suction device for a cigarette making machine according to claim 1, characterized in that: The first guide channel (21) comprises a first adsorption port (211) communicating with the fixed plate and the gap portion, and a second adsorption port (212) communicating with the small pressing plate and the gap portion, wherein the dimension of the second adsorption port (212) perpendicular to the cigarette forming direction is smaller than the dimension of the first adsorption port (211) perpendicular to the cigarette forming direction.

6. The dust suction device for a cigarette making machine according to claim 1, characterized in that: The dust collecting device further comprises a flow collecting member (3) provided with a flow collecting channel, the flow collecting member (3) being arranged between the flow guiding member (1) and the cigarette making machine, the flow collecting channel being in communication with the flow guiding channel, and the size of the flow collecting channel being smaller than the size of the flow guiding channel.

7. The dust suction device for a cigarette making machine according to claim 6, characterized in that: The collecting channel comprises a first collecting channel (41) communicating only with the fixed plate, a second collecting channel (42) communicating only with the gap portion, and a third collecting channel (43) communicating only with the small pressure plate.

8. The dust suction device for a cigarette making machine according to claim 6, characterized in that: The flow collecting member (3) is fixedly mounted on the cigarette making machine, and the flow guiding member (1) is detachably connected to the flow collecting member (3).

9. The dust suction device for a cigarette making machine according to claim 8, characterized in that: The flow collecting member (3) is provided with a positioning hole (31), and the flow guiding member (1) is provided with a positioning column (14) which can be inserted into the positioning hole (31); the free end of the positioning column (14) passes through the positioning hole (31) and abuts against the cigarette making machine, and the free end of the positioning column (14) is provided with a flexible pad.

10. The dust suction device for a cigarette making machine according to claim 1, characterized in that: One end of the guide channel is connected to the cigarette making machine, and the other end is provided with a detection port; the dust suction device also includes a cover plate (5) for closing the detection port, and the cover plate (5) is detachably connected to the guide member (1).

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