Unpurified cigarette detection device
By combining mechanical structure and photoelectric detection equipment, the error detection problem of photoelectric detection methods is solved, efficient and stable detection of unpurified cigarette outlets is achieved, and the misjudgment rate and maintenance cost are reduced.
Patent Information
- Application Number
- CN202422265644.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing photoelectric detection methods have a high false detection rate when detecting unpurified cigarette posts, especially when there are a small amount of tobacco residues or foreign objects at the ends of the tobacco wire, which can easily lead to misjudgment.
By combining mechanical structure and photoelectric detection equipment, the smoke pressing part of the detection rod is pressed on the cigarette support through the smoke pressing part. When the tobacco exists, resistance is generated to cause the detection rod to trigger the photoelectric detection equipment. The photoelectric detection equipment emits light to detect whether it is triggered, forming a sealed space to avoid dust pollution.
It improves the stability of unpurified cigarette post detection, reduces the false detection rate, reduces the maintenance frequency of photoelectric detection equipment, and saves manpower.
Smart Images
Figure CN223092158U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cigarette tobacco detection, in particular to a detection device for un-cleaned cigarettes. Background Art
[0002] In the process of cigarette recycling, generally, the cigarette tobacco is blown out of the cigarette by blowing air out of the cigarette, and then the tobacco and the cigarette paper tube are recycled. At present, the equipment for recycling waste cigarettes by air blowing needs to detect the cigarettes in the next process after blowing air from the filter tip end of the cigarette to determine whether the cigarette is blown clean.
[0003] The current detection method is to perform photoelectric detection on the cigarette from the tobacco end of the cigarette, that is, the photoelectric detection head emits a detection beam to the tobacco end of the cigarette. If the tobacco is blown clean, the beam is not blocked and there is no reflection, and the photoelectric detection head cannot receive the reflected light, indicating that the tobacco is blown clean; if the tobacco is not blown clean, the beam will form a reflection after hitting the tobacco, and the photoelectric detection head receives the reflected light, indicating that the tobacco is not blown clean.
[0004] However, the current photoelectric detection method has a high false detection rate. For example, when a small amount of tobacco falls at the tobacco end, a cavity will be formed at the front end. Using the photoelectric detection method, it will indicate that the cigarette has been blown clean, but actually the cigarette is not blown clean; on the other hand, if there is an obstructive foreign object between the cigarette end face and the detection head, such as the obstruction of fallen tobacco, paper pieces or other foreign objects, it will also cause misjudgment in detection. Summary of the Utility Model
[0005] In order to improve at least some of the above disadvantages or deficiencies, an embodiment of the utility model provides a detection device for un-cleaned cigarettes.
[0006] Specifically, a non-clean cigarette detection device provided by an embodiment of the present utility model includes: a base, a detection mechanism, and a conveying mechanism. The detection mechanism is connected to the base in a liftable manner. A plurality of cigarette placement slots are arranged at intervals on the conveying mechanism. The detection mechanism includes: a mounting body. A first guide plate is arranged at one end of the mounting body facing away from the conveying mechanism. A plurality of first through holes are arranged on the first guide plate. A plurality of detection rods are movably connected to the plurality of first through holes in a one-to-one correspondence. The detection rods can reciprocate in the vertical direction relative to the mounting body, and the plurality of detection rods are arranged in a one-to-one correspondence with the plurality of cigarette placement slots. A pressing cigarette portion extending out of the mounting body is arranged at one end of the detection rod close to the cigarette placement slot. A detection portion is arranged at the other end of the detection rod opposite to the pressing cigarette portion. An optoelectronic detection assembly is arranged on the side of the mounting body facing away from the conveying mechanism. The optoelectronic detection assembly is provided with a plurality of optoelectronic detection devices corresponding to the plurality of detection rods. A distance is arranged between the detection portion and the optoelectronic detection devices. The optoelectronic detection assembly is hermetically connected to the mounting body to form a sealed space, and the optoelectronic detection devices are located in the sealed space. The detection rod is used to drive the detection portion to move towards the optoelectronic detection device and trigger the optoelectronic detection device when it detects that there is tobacco in the cigarette in the cigarette placement slot. The optoelectronic detection device is used to emit detection light to detect whether it is triggered by the detection portion, so as to detect whether there is tobacco in the corresponding cigarette.
[0007] In an embodiment of the present utility model, a second guide plate is further arranged on the mounting body relative to the first guide plate. The second guide plate is arranged on the side facing away from the optoelectronic detection assembly. A plurality of second through holes are arranged on the second guide plate. The detection rod is movably connected to the second through holes and extends out of the second through holes.
[0008] In an embodiment of the present utility model, a first flat position is arranged on the inner wall of the first through hole, and a second flat position is arranged on the detection portion corresponding to the first flat position.
[0009] In an embodiment of the present utility model, a spring limiting portion is arranged on the detection rod close to the pressing cigarette portion. The detection mechanism further includes: a plurality of springs. The plurality of springs are sleeved on the plurality of detection rods in a one-to-one correspondence. One end of the spring abuts against the side of the mounting body close to the detection portion, and the other end abuts against the spring limiting portion.
[0010] In an embodiment of the present utility model, a detection rod accommodating portion and a spring accommodating portion communicating with the first through hole and the second through hole are arranged in the mounting body. The detection rod is arranged in the detection rod accommodating portion, and the spring is arranged in the spring accommodating portion. The diameters of the first through hole and the second through hole are the same, and the diameter of the spring accommodating portion is larger than the diameter of the first through hole.
[0011] In an embodiment of the present utility model, a spring portion and a step portion are further provided on the detection rod. The spring portion is disposed between the detection portion and the step portion. The step portion is located between the spring portion and the pressing tobacco portion. The spring is sleeved on the spring portion, and the spring is located between the first guide plate and the step portion.
[0012] In an embodiment of the present utility model, the diameter of the detection portion is the same as that of the spring portion, the diameter of the step portion is larger than that of the spring portion, and the diameter of the step portion is larger than that of the pressing tobacco portion.
[0013] In an embodiment of the present utility model, the pressing tobacco portion has a contact bottom for contacting the cigarette rod, and the contact bottom is a circular curved surface structure.
[0014] In an embodiment of the present utility model, the number of the detection mechanisms is two or more, and two or more of the detection mechanisms are arranged at intervals along the length direction of the cigarette rod placement groove.
[0015] As can be seen from the above, the above technical features of the present utility model can have one or more of the following beneficial effects: The un-clean cigarette rod detection device provided in this embodiment is provided with a base, a detection mechanism and a transmission mechanism. The detection mechanism includes a mounting body, a plurality of detection rods and a photoelectric detection component. By moving the detection mechanism towards the transmission mechanism, the pressing tobacco portion of the detection rod is pressed onto the cigarette rod. When there is tobacco shred in the cigarette rod, the pressing tobacco portion receives resistance, causing the detection rod to move towards the photoelectric detection component, so that the detection portion triggers the photoelectric detection device. The photoelectric detection device can emit light to detect whether it is triggered by the detection portion, so as to detect whether there is tobacco shred in the corresponding cigarette rod. Through the combination of the mechanical structure and the photoelectric detection device, it is possible to effectively judge whether the tobacco shred in the cigarette rod has been blown clean, and improve the detection stability of the un-clean cigarette rod. Moreover, the photoelectric detection component and the mounting body are hermetically connected to form a sealed space, which can avoid the problem that the photoelectric detection device is polluted by dust and causes detection errors, and can also avoid the need for manual frequent wiping and maintenance of the photoelectric detection device, saving manpower while improving the detection stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0017] Figure 1 It is a schematic structural diagram of an un-clean cigarette rod detection device provided by an embodiment of the present utility model.
[0018] Figure 2 is Figure 1 a schematic structural diagram of the installation body in
[0019] Figure 3 is Figure 1 a schematic structural diagram of the detection rod in
[0020] Figure 4 is Figure 2 a schematic structural diagram of the first guide plate in
[0021] Figure 5 and Figure 6 is a schematic structural diagram of the working state of the unfiltered cigarette detection device.
[0022] Figure 7 and Figure 8 is a schematic diagram of the arrangement state of the detection mechanism on the cigarette.
[0023] Main component numbers:
[0024] 1. Unfiltered cigarette detection device; 10. Base; 20. Detection mechanism; 30. Conveyor mechanism; 31. Cigarette placement groove; 40. Cigarette; 100. Installation body; 110. First guide plate; 111. First through hole; 1111. First flat position; 120. Second guide plate; 121. Second through hole; 130. Detection rod accommodating part; 140. Spring accommodating part; 200. Detection rod; 210. Cigarette pressing part; 211. Contact bottom; 220. Detection part; 230. Spring part; 240. Step part; 241. Spring limiting part; 300. Photoelectric detection component; 301. Sealed space; 310. Photoelectric detection device; 400. Spring. Specific embodiments
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0026] See Figure 1 , a kind of unfiltered cigarette detection device 1 provided by the embodiment of the present invention specifically may include, for example: a base 10, a detection mechanism 20 and a conveyor mechanism 30. The detection mechanism 20 is connected to the base 10 in a liftable manner, specifically may be connected to the base 10 through a lifting mechanism. The conveyor mechanism 30 may be a conveyor belt for example, and the conveyor mechanism 30 is used to convey cigarettes 40, and a plurality of cigarette placement grooves 31 are arranged at intervals on the conveyor mechanism 30. The detection mechanism 20 is located above the conveyor mechanism 30.
[0027] The detection mechanism 20 may include, for example: a mounting body 100 , a plurality of detection rods 200 , and a photoelectric detection assembly 300 .
[0028] The installation body 100 may be, for example, a rectangular parallelepiped structure, but of course, the present embodiment is not limited thereto. A plurality of detection rods 200 are movably connected to the installation body 100, and the plurality of detection rods 200 are arranged one-to-one with the plurality of cigarette placement slots 31, and the detection rods 200 can reciprocate in the vertical direction relative to the installation body 100. The detection rod 200 may be, for example, a rod-shaped structure, and one end of the detection rod 200 close to the cigarette placement slot 31 is arranged on the smoke pressing portion 210 extending from the installation body 100, and the other end of the detection rod 200 opposite to the smoke pressing portion 210 is provided with a detection portion 220. The photoelectric detection assembly 300 is arranged on the side of the installation body 100 away from the conveying mechanism 30, that is, the photoelectric detection assembly 300 is arranged on the upper side of the installation body 100. The photoelectric detection assembly 300 is provided with multiple photoelectric detection devices 310 corresponding to the multiple detection rods 200. The photoelectric detection device 310 can be, for example, a photoelectric detection sensor, which can emit light and perform detection based on the reflection of the light, and a distance is set between the detection part 220 of the detection rod 200 and the photoelectric detection device 310.
[0029] The detection mechanism 20 moves toward the conveying mechanism 30, and the detection rod 200 moves toward the cigarette 40. When the tobacco in the cigarette 40 is not blown out, that is, there is still tobacco in the cigarette 40, the tobacco pressing part 210 of the detection rod 200 contacts the cigarette 40, and the tobacco in the cigarette 40 will produce resistance, so that the detection rod 200 moves toward the photoelectric detection component 300, so that the detection part 220 triggers the photoelectric detection device 310. The photoelectric detection device 310 emits a detection light. When the detection part 220 triggers the photoelectric detection device 310, the light will irradiate the detection part 220 and be reflected back, so that the photoelectric detection device 310 determines that it is triggered by the detection part 220, and thus it is considered that there is tobacco in the corresponding cigarette 40. When the tobacco in the cigarette 40 is blown out, the cigarette 40 will not cause the detection rod 200 to move toward the photoelectric detection component 300, so that the detection part 220 will not trigger the photoelectric detection device 310. The photoelectric detection device 310 emits a detection light. When the detection unit 220 does not trigger the photoelectric detection device 310, the light will be emitted without being reflected, so that the photoelectric detection device 310 determines that it is not triggered by the detection unit 220, and thus considers that there is no tobacco in the corresponding cigarette 40.
[0030] The unfiltered cigarette detection device 1 provided in this embodiment is provided with a base 10, a detection mechanism 20 and a conveying mechanism 30. The detection mechanism 20 includes a mounting body 100, a plurality of detection rods 200 and a photoelectric detection component 300. By moving the detection mechanism 20 towards the conveying mechanism 30, the cigarette pressing part 210 of the detection rod 200 is pressed onto the cigarette. When there is tobacco shred in the cigarette, the cigarette pressing part 210 receives resistance, causing the detection rod 200 to move towards the photoelectric detection component 300, so that the detection part 220 triggers the photoelectric detection device 310. The photoelectric detection device 310 can emit light to detect whether it is triggered by the detection part 220, so as to detect whether there is tobacco shred in the corresponding cigarette. Through the combination of the mechanical structure and the photoelectric detection device 310, it is possible to effectively judge whether the tobacco shred in the cigarette has been blown clean, and improve the detection stability of unfiltered cigarettes.
[0031] Further, the photoelectric detection component 300 and the mounting body 100 are hermetically connected to form a sealed space 301, and the photoelectric detection device 310 is located in the sealed space 301. Since a large amount of dust will be generated in the environment of tobacco shred recovery, by arranging the photoelectric detection device 310 in the sealed space 301, the problem that the photoelectric detection device 310 is polluted by dust and causes detection errors can be avoided, and the need for frequent manual wiping and maintenance of the photoelectric detection device 310 can also be avoided, saving manpower while improving the detection stability.
[0032] See Figure 1 、 Figure 2 and Figure 3 As shown in, a spring limiting part 241 is arranged on the detection rod 200 close to the cigarette pressing part 210. The detection mechanism 20 may further include a plurality of springs 400. The plurality of springs 400 are sleeved on the plurality of detection rods 200 one by one, and one end of the spring 400 abuts against the side of the mounting body 100 close to the detection part 220, and the other end abuts against the spring limiting part 241. When the cigarette pressing part 210 receives the force of the tobacco shred and causes the spring 400 to deform (for example, the spring is compressed), the detection rod 200 is forced to move so that the detection part 220 triggers the photoelectric detection device 310. When the force received by the cigarette pressing part 210 from the cigarette is not enough to cause the spring 400 to deform (for example, the spring is compressed), the detection rod 200 will not be forced to move. When the detection mechanism 20 moves away from the conveying mechanism 30, the spring 400 returns to its original state, so that the detection rod 200 returns to its original position.
[0033] See Figure 2, the installation main body 100 includes a first guide plate 110 and a second guide plate 120 which are oppositely arranged. The first guide plate 110 is arranged on the side close to the photoelectric detection component 300, and the second guide plate 120 is arranged on the side close to the conveying mechanism 30. A plurality of first through holes 111 are arranged on the first guide plate 110, and a plurality of second through holes 121 are arranged on the second guide plate 120. The detection rod 200 is movably connected to the first through holes 111 and the second through holes 121, so that the detection rod 200 can move up and down in the first through holes 111 and the second through holes 121. In an implementation manner of this embodiment, refer to Figure 4 , a first flat position 1111 is arranged on the inner wall of the first through hole 111. Correspondingly, a second flat position is arranged on the detection part 220 of the detection rod 200 corresponding to the first flat position 1111. The first flat position 1111 and the second flat position are arranged corresponding to each other. Through the arrangement of the flat positions, the detection rod 200 can be prevented from rotating in the first through hole 111, and the stability is improved.
[0034] Refer to again Figure 1 and Figure 2 , a detection rod accommodating part 130 and a spring accommodating part 140 are arranged in the installation main body 100. The detection rod accommodating part 130 is communicated with the first through hole 111 and the second through hole 121. The detection rod 200 is arranged in the detection rod accommodating part 130, and the spring 400 is arranged in the spring accommodating part 140. In this embodiment, the diameters of the first through hole 111 and the second through hole 121 can be the same, for example. The diameter of the spring accommodating part 140 is larger than the diameter of the first through hole 111. By setting the diameter of the spring accommodating part 140 to be larger than the diameter of the first through hole 111, the spring 400 can be limited to the first guide plate 110.
[0035] Refer to again Figure 3 , for example, a spring part 230 and a step part 240 can also be arranged on the detection rod 200. The spring part 230 is arranged between the detection part 220 and the step part 240. The step part 240 is located between the spring part 230 and the smoke pressing part 210. The spring 400 is sleeved on the spring part 230, and the spring 400 is located between the first guide plate 110 and the step part 240. Through the structural arrangement of the detection rod 200, it is convenient to install the spring 400. In this embodiment, the diameter of the detection part 220 is the same as the diameter of the spring part 230. The diameter of the step part 240 is larger than the diameter of the spring part 230. The diameter of the step part 240 is larger than the diameter of the smoke pressing part 210. In an implementation manner of this embodiment, the smoke pressing part 210 has a contact bottom 211 for contacting the cigarette 40. The contact bottom 211 is a circular curved surface structure. Through the arrangement of the circular curved surface structure, the fit between the contact bottom 211 and the cigarette 40 can be better.
[0036] Refer to Figure 5 and Figure 6, the working process of the unfiltered cigarette detection device 1 provided in this embodiment will be described. When it is necessary to detect the cigarettes 40 on the conveying mechanism 30, the detection mechanism 20 moves towards the conveying mechanism 30, and the detection rod 200 moves towards the cigarette 40. When the tobacco in the cigarette 40 is not blown out completely, that is, there is still tobacco in the cigarette 40, the pressing part 210 of the detection rod 200 contacts the cigarette 40, and the tobacco in the cigarette 40 will generate resistance, causing the detection rod 200 to move towards the photoelectric detection component 300, so that the detection part 220 triggers the photoelectric detection device 310. The photoelectric detection device 310 emits detection light. When the detection part 220 triggers the photoelectric detection device 310, the light will irradiate the detection part 220 and be reflected back, so that the photoelectric detection device 310 determines that it is triggered by the detected part 220, and thus believes that there is tobacco in the corresponding cigarette 40. When the tobacco in the cigarette 40 is blown out completely, the cigarette 40 will not cause the detection rod 200 to move towards the photoelectric detection component 300, so that the detection part 220 will not trigger the photoelectric detection device 310. The photoelectric detection device 310 emits detection light. When the detection part 220 does not trigger the photoelectric detection device 310, the light will irradiate out without being reflected, so that the photoelectric detection device 310 determines that it is not triggered by the detected part 220, and thus believes that there is no tobacco in the corresponding cigarette 40.
[0037] See Figure 7 and Figure 8 , the number of the detection mechanisms 20 can be, for example, more than two, and more than two detection mechanisms 20 are arranged at intervals along the length direction of the cigarette placement groove 31. By arranging multiple detection mechanisms 20, the detection accuracy can be improved in the length direction of the cigarette 40. The number of the detection mechanisms 20 can be, for example, two or more. For example, the detection mechanism 20 can include two, and the two detection mechanisms 20 are arranged at intervals in the length direction of the cigarette 40. One detection mechanism 20 can be, for example, arranged near the filter end of the cigarette 40, and the other detection mechanism 20 is arranged at the tobacco end of the cigarette 40. By arranging multiple detection mechanisms 20, the situation where half of the tobacco in the cigarette 40 is blown out, but the other half remains in the cigarette 40, can be effectively detected, and the detection accuracy can be improved.
[0038] In addition, it can be understood that the foregoing embodiments are only exemplary descriptions of the present utility model. On the premise that the technical features do not conflict, the structures do not contradict, and the invention purpose of the present utility model is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used.
[0039] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.
[0040] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. An unfiltered cigarette detection device, characterized in that, Including: A base, a detection mechanism, and a conveying mechanism. The detection mechanism is connected to the base in a liftable manner. A plurality of cigarette placement slots are arranged at intervals on the conveying mechanism. The detection mechanism includes: An installation main body. A first guide plate is arranged at one end of the installation main body facing away from the conveying mechanism. A plurality of first through holes are arranged on the first guide plate. A plurality of detection rods are respectively and movably connected to the plurality of first through holes. The detection rods can reciprocate in the vertical direction relative to the installation main body. The plurality of detection rods are arranged corresponding to the plurality of cigarette placement slots one by one. A cigarette pressing part extending out of the installation main body is arranged at one end of the detection rod close to the cigarette placement slot. A detection part is arranged at the other end of the detection rod opposite to the cigarette pressing part. An optoelectronic detection component is arranged on the side of the installation main body facing away from the conveying mechanism. The optoelectronic detection component is provided with a plurality of optoelectronic detection devices corresponding to the plurality of detection rods. A distance is arranged between the detection part and the optoelectronic detection devices. The optoelectronic detection component is hermetically connected to the installation main body to form a sealed space. The optoelectronic detection devices are located in the sealed space. The detection rod is used to drive the detection part towards the optoelectronic detection device and trigger the optoelectronic detection device when it detects that there is tobacco in the cigarette in the cigarette placement slot. The optoelectronic detection device is used to emit detection light to detect whether it is triggered by the detection part, so as to detect whether there is tobacco in the corresponding cigarette.
2. The unfiltered cigarette detection device according to claim 1, wherein The installation main body is further provided with a second guide plate relative to the first guide plate. The second guide plate is arranged on the side facing away from the optoelectronic detection component. A plurality of second through holes are arranged on the second guide plate. The detection rod is movably connected to the second through holes and extends out of the second through holes.
3. The unfiltered cigarette detection device according to claim 2, characterized in that, A first flat position is arranged on the inner wall of the first through hole. A second flat position corresponding to the first flat position is arranged on the detection part.
4. The unfiltered cigarette detection device according to claim 2, wherein, A spring limiting part is arranged on the detection rod close to the cigarette pressing part. The detection mechanism further includes: a plurality of springs. The plurality of springs are respectively sleeved on the plurality of detection rods one by one. One end of the spring abuts against the side of the installation main body close to the detection part, and the other end abuts against the spring limiting part.
5. The unfiltered cigarette detection device according to claim 4, characterized in that, A detection rod accommodating part and a spring accommodating part communicating with the first through hole and the second through hole are arranged in the installation main body. The detection rod is arranged in the detection rod accommodating part, and the spring is arranged in the spring accommodating part. The diameters of the first through hole and the second through hole are the same. The diameter of the spring accommodating part is larger than the diameter of the first through hole.
6. The unfiltered cigarette detection device according to claim 5, wherein A spring part and a step part are further arranged on the detection rod. The spring part is arranged between the detection part and the step part. The step part is located between the spring part and the cigarette pressing part. The spring is sleeved on the spring part, and the spring is located between the first guide plate and the step part.
7. The unfiltered cigarette detection device according to claim 6, wherein, The diameter of the detection part is the same as the diameter of the spring part. The diameter of the step part is larger than the diameter of the spring part. The diameter of the step part is larger than the diameter of the cigarette pressing part.
8. The unfiltered cigarette detection device according to claim 7, wherein, The cigarette pressing part has a contact bottom for contacting the cigarette, and the contact bottom is a circular curved surface structure.
9. The unfiltered cigarette detection device according to any one of claims 1 to 8, characterized in that, The number of the detection mechanisms is more than two, and the more than two detection mechanisms are arranged at intervals along the length direction of the cigarette placement groove.