Multi-specification cigarette conveying and appearance detecting equipment

Abstract

The utility model relates to multi-specification cigarette conveying and appearance detecting equipment which comprises a rack, a cigarette pile conveying mechanism, a separated cigarette taking mechanism, a cigarette longitudinal positioning mechanism, a cigarette conveying mechanism, a cigarette rotating mechanism, an appearance detecting assembly and a removing mechanism. The cigarette pile conveying mechanism conveys the cigarette piles in the cigarette storage frame and supplies the cigarettes to the separated cigarette taking mechanism. The separated cigarette taking mechanism is used for independently taking out the cigarettes in the cigarette pile through rotation of a cigarette taking drum wheel. And the cigarette longitudinal positioning mechanism is used for longitudinally positioning the cigarettes on the cigarette taking drum wheel, so that the cigarettes with different length specifications can be positioned, and the position requirement of the appearance detection assembly can be met. The cigarette conveying mechanism is used for conveying the cigarettes conveyed by the separated cigarette taking mechanism. The cigarette rotating mechanism mainly utilizes the speed difference between the cigarette rotating mechanism and the cigarette conveying mechanism to drive cigarettes in a wedge-shaped groove of the cigarette conveying mechanism to rotate. And the detection assembly is used for detecting the appearance quality of the conveyed cigarettes.

Description

A multi-specification cigarette conveying and appearance inspection device Technical Field

[0001] This utility model relates to the field of cigarette conveying and testing equipment, and in particular to a multi-specification cigarette conveying and appearance inspection equipment. Background Technology

[0002] To enhance product competitiveness and better expand markets, cigarette manufacturers are not only increasing investment in technological upgrades to improve cigarette quality, but also innovating packaging design and quality to better consolidate and expand their market share in the face of fierce competition. Quality testing of cigarette products is a crucial means of ensuring quality.

[0003] Currently, most cigarette inspection devices on the market are designed to inspect cigarettes produced on the cigarette-making machine, meeting routine production requirements but unable to inspect cigarettes that need to leave the production line. In recent years, with the development of various non-standard packaging machines, the traditional manual cigarette packaging has gradually been replaced. Cigarettes for these machines are typically loaded onto trays using cigarette storage frames and supplied to these non-standard packaging machines. Therefore, developing a multi-specification cigarette conveying and appearance inspection device is particularly important to ensure the quality of these cigarettes leaving the traditional production line. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-specification cigarette conveying and appearance inspection device that can detect cigarettes of different lengths offline, has high detection accuracy, and has a simple structure.

[0005] The technical solution of the multi-specification cigarette conveying and appearance inspection equipment provided by this utility model is as follows:

[0006] A multi-specification cigarette conveying and appearance inspection device includes a frame (1), a cigarette pile conveying mechanism (2), a separate cigarette taking mechanism (3), a cigarette longitudinal positioning mechanism (4), a cigarette conveying mechanism (5), a cigarette rotating mechanism (6), an appearance inspection component (7), and a rejection mechanism (8). The cigarette pile conveying mechanism (2) conveys the cigarette pile in the cigarette storage frame to the separate cigarette taking mechanism (3). The separate cigarette taking mechanism (3) removes the cigarettes from the cigarette pile individually by rotating the cigarette taking drum wheel, and the separately separated cigarettes are conveyed to the cigarette conveying mechanism (5). The cigarette longitudinal positioning mechanism (4) 4) By executing the cylinder action, the guide component is driven to swing, thereby positioning cigarettes of different lengths to meet the cigarette alignment requirements of the appearance inspection component (7); the cigarette conveying mechanism (5) uses a conveyor belt as the main conveyor to convey cigarettes; the cigarette rotating mechanism (6) drives the cigarettes in the wedge groove of the cigarette conveying mechanism to rotate by the speed difference with the cigarette conveying mechanism (5); the inspection component (7) performs appearance quality inspection on the conveyed cigarettes; cigarettes that fail the quality inspection feedback from the inspection component (7) are blown out of the conveying line by the rejection mechanism (8).

[0007] Furthermore, the tobacco pile conveying mechanism (2) includes a tobacco storage frame (201), a tobacco pile conveying belt conveyor (202) inside the tobacco frame, a tobacco taking bin (203), and a tobacco stick conveying belt conveyor (204) inside the tobacco taking bin. The tobacco storage frame (201) is used for feeding and assists in controlling the status of the tobacco sticks when taking tobacco sticks in the lower process. The tobacco pile conveying belt conveyor (202) inside the tobacco frame is driven by a motor to move the flat belt and convey the tobacco pile in the tobacco storage frame (201) forward. The tobacco taking bin (203) is used to store the tobacco sticks conveyed by the tobacco pile conveying belt conveyor (202) inside the tobacco frame and cooperates with the separate tobacco taking mechanism (3) to take out the tobacco sticks.

[0008] Furthermore, the cigarette conveyor belt (204) in the cigarette collection compartment, through speed matching, coordinates with the rotational speed of the cigarette collection drum (301) of the cigarette collection mechanism (3) to ensure that the top of the cigarettes in the cigarette storage frame (201) remains flat as the number of cigarettes gradually decreases.

[0009] Furthermore, the separate cigarette taking mechanism (3) includes a cigarette taking drum wheel (301), a floating cigarette taking wheel (302), an auxiliary guard plate (303), and a cigarette holder detection sensor (304). The cigarette taking drum wheel (301) rotates to take out cigarettes one by one from the cigarette taking chamber (203). The floating cigarette taking wheel (302) rotates in the opposite direction to the cigarette taking drum wheel (301) and can circulate the cigarettes brought by the cigarette taking drum wheel (301) in the cigarette taking chamber (203). When the floating cigarette taking wheel (302) encounters resistance, it can float up. When the travel reaches a certain position, the sensor can report the abnormal working state to the host. The cigarette holder detection sensor (304) can detect the cigarette taking status of the cigarette taking drum wheel (301) and at the same time monitor whether there are still cigarettes in the cigarette taking chamber (203).

[0010] Furthermore, the longitudinal positioning mechanism (4) of the cigarette includes a positioning cylinder (401), a rod end joint bearing (402), a connector (403), a guide (404), and an inner positioning plate (405). The positioning cylinder (401) pushes the rod end joint bearing (402), and then the connector (403) drives the guide (404) to swing. Through the different states of the guide (404), cigarettes of different lengths can be guided in the cigarette trough, and the end face of the cigarette can be aligned with the inner positioning plate (405).

[0011] Furthermore, the cigarette conveying mechanism (5) includes a driving pulley (501), a driven pulley (502), a synchronous belt (503), a tensioning pulley (504), and a wedge-shaped cigarette groove (505). The cigarette drum wheel (301) delivers the cigarette to the conveying mechanism (5). The driving pulley (501) and the driven pulley (502) drive the synchronous belt (503) to move, thereby driving the cigarette in the wedge-shaped cigarette groove (505) to move in the direction of movement.

[0012] Furthermore, the cigarette rotation mechanism (6) includes a drive motor (601), a driving pulley (602), a driven pulley (603), and a circular belt (604). The drive motor (601) drives the circular belt (604) to rotate. The linear speed of the circular belt (604) is faster than that of the synchronous belt (503). By utilizing the difference in linear speed between the circular belt (604) and the synchronous belt (503), the cigarette is driven to rotate in the wedge-shaped cigarette groove (505). The purpose is that the appearance inspection component (7) can detect the entire cylindrical surface of the cigarette.

[0013] Further, the appearance inspection component (7) includes a first light source (701), a second light source (702), a third light source (703), a fourth light source (704), a first camera (705), a second camera (706), a third camera (707), and an adjusting cylinder (708). The first light source (701) and the second light source (702) provide supplementary lighting to the cylindrical surface of the cigarette; the third light source (703) provides supplementary lighting to the end face of the cigarette filter; the fourth light source (704) provides supplementary lighting to the lit end face of the cigarette; the first camera (705)... 705) The image of the cylindrical surface of the cigarette is acquired by reflecting the image through a plane mirror; the second camera (706) acquires the image of the lit end of the cigarette by reflecting the image through a plane mirror; the third camera (707) acquires the image of the filter end of the cigarette by reflecting the image through a plane mirror; the adjusting cylinder (708) controls the movement of the third camera (707); the purpose of controlling the movement of the third camera (707) is to adjust the object distance so that cigarettes of different lengths can be focused and the acquired images are clear, thus meeting the requirements for detecting cigarettes of different lengths.

[0014] Furthermore, the rejection mechanism (8) includes a solenoid valve fixing plate (801), a solenoid valve (802), and a gas nozzle (803). When the cigarettes conveyed by the cigarette conveying mechanism (5) arrive at the rejection mechanism (8), the rejection mechanism (8) releases or rejects the moving cigarettes based on the good or bad signal given by the algorithm after the appearance detection component (7) takes the picture.

[0015] The implementation of this utility model has the following technical effects:

[0016] This utility model relates to a multi-specification cigarette conveying and appearance inspection device. The cigarette stack conveying mechanism transports cigarette stacks within a cigarette storage frame to a separate cigarette retrieval mechanism. The separate cigarette retrieval mechanism individually removes cigarettes from the stack via a rotating retrieval drum. A longitudinal cigarette positioning mechanism positions cigarettes on the retrieval drum longitudinally to accommodate cigarettes of different lengths, meeting the positional requirements of the appearance inspection component. The cigarette conveying mechanism transports cigarettes from the separate retrieval mechanism. The cigarette rotation mechanism utilizes the speed difference with the cigarette conveying mechanism to rotate cigarettes within the wedge-shaped groove of the conveying mechanism. The inspection component performs appearance quality inspection on the conveyed cigarettes. The rejection mechanism uses air blowing to flexibly reject cigarettes that fail the quality inspection. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the multi-specification cigarette conveying and appearance inspection equipment according to an embodiment of the present invention.

[0018] Figure 2 is a schematic diagram of the smoke stack conveying mechanism according to an embodiment of the present invention.

[0019] Figure 3 is a schematic diagram of the separate cigarette retrieval mechanism according to an embodiment of the present invention.

[0020] Figure 4 is a schematic diagram of the longitudinal positioning mechanism of the cigarette in an embodiment of this utility model.

[0021] Figure 5 is a schematic diagram of the cigarette conveying mechanism according to an embodiment of the present invention.

[0022] Figure 6 is a schematic diagram of the cigarette rotating mechanism of an embodiment of the present invention.

[0023] Figure 7 is a schematic diagram of the appearance inspection component according to an embodiment of the present invention.

[0024] Figure 8 is a schematic diagram of the rejection mechanism according to an embodiment of the present invention. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the embodiments and accompanying drawings. It should be noted that the described embodiments are only intended to facilitate the understanding of the present invention and do not constitute any limitation thereof.

[0026] Referring to Figure 1, this embodiment provides a multi-specification cigarette conveying and appearance inspection device, including a frame 1, a cigarette pile conveying mechanism 2, a separate cigarette taking mechanism 3, a cigarette longitudinal positioning mechanism 4, a cigarette conveying mechanism 5, a cigarette rotating mechanism 6, an appearance inspection component 7, and a rejection mechanism 8. The frame 1 is the basic structural framework of the entire device; the cigarette pile conveying mechanism 2 conveys the cigarette pile in the cigarette storage frame to the separate cigarette taking mechanism 3; the separate cigarette taking mechanism 3 takes out the cigarettes from the cigarette pile individually by rotating the cigarette taking drum wheel, and the independently separated cigarettes are conveyed to the cigarette conveying mechanism 5; The longitudinal positioning mechanism 4 of the cigarettes, by executing the action of the cylinder, drives the guide to swing, thereby positioning cigarettes of different lengths to meet the cigarette alignment requirements of the appearance inspection component 7; the cigarette conveying mechanism 5, using a conveyor belt as the main conveyor, conveys the cigarettes; the cigarette rotating mechanism 6, by the speed difference with the cigarette conveying mechanism 5, drives the cigarettes in the wedge groove of the cigarette conveying mechanism to rotate; the inspection component 7 performs appearance quality inspection on the conveyed cigarettes; cigarettes that fail the quality inspection feedback from the inspection component 7 are flexibly rejected by the rejection mechanism 8 through the air blowing rejection conveyor line.

[0027] Further, referring to Figure 2, the tobacco pile conveying mechanism 2 includes a tobacco storage frame 201, a tobacco pile conveyor belt 202 inside the tobacco frame, a tobacco taking bin 203, and a tobacco stick conveyor belt 204 inside the tobacco taking bin. The tobacco storage frame 201 is used for feeding and also assists in controlling the status of the tobacco sticks when taking tobacco sticks in the lower process. The tobacco pile conveyor belt 202 inside the tobacco frame is driven by a motor to move the flat belt and convey the tobacco pile in the tobacco storage frame 201 forward. The tobacco taking bin 203 is used to store the tobacco sticks conveyed by the tobacco pile conveyor belt 202 inside the tobacco frame and cooperates with the separate tobacco taking mechanism 3 to take out the tobacco sticks. The cigarette conveyor belt 204 in the cigarette collection bin can effectively coordinate with the rotational speed of the cigarette collection drum 301 of the cigarette collection mechanism 3 through speed matching. The purpose is to ensure that the top of the cigarettes in the cigarette storage frame 201 remains flat as the number of cigarettes gradually decreases, avoiding the occurrence of stacking slopes or the disorder of cigarettes inside the cigarette frame 201 due to tilting materials after cigarette collection. This also helps the cigarette collection mechanism 3 to more smoothly remove cigarettes and control the flatness of the top cigarettes in the cigarette storage frame 201.

[0028] Referring to Figure 3, the separate cigarette retrieval mechanism 3 includes a cigarette-retrieval drum wheel 301, a floating cigarette-dispensing wheel 302, an auxiliary guard plate 303, and a cigarette bin detection sensor 304. The cigarette-retrieval drum wheel 301 rotates to retrieve cigarettes one by one from the cigarette retrieval chamber 203. The floating cigarette-dispensing wheel 302 rotates in the opposite direction to the cigarette-retrieval drum wheel 301, enabling the cigarettes brought by the cigarette-retrieval drum wheel 301 to circulate within the cigarette retrieval chamber 203. When the floating cigarette-dispensing wheel 302 encounters resistance, it can float and lift. When its travel reaches a certain position, the sensor can report an abnormal working state to the host. The cigarette bin detection sensor 304 can detect the cigarette-retrieval status of the cigarette-retrieval drum wheel 301 and simultaneously monitor whether there are still cigarettes in the cigarette retrieval chamber 203. The purpose of adding the floating cigarette-dispensing wheel 302 to the cigarette retrieval mechanism 3 is to accommodate different cigarettes that can be retrieved by the cigarette-retrieval drum wheel 301, while the reverse rotation of the floating cigarette-dispensing wheel 302 ensures the circulation of cigarettes within the cigarette retrieval chamber 203. The purpose is to prevent cigarettes from accumulating at the outlet position within the cigarette collection chamber 203; and to trigger an abnormal fault shutdown when the floating cigarette guide wheel 302 is forcibly lifted due to abnormal cigarette blockage. This reminds operators to check the junction between the cigarette collection drum wheel 301 and the floating cigarette guide wheel 302 to prevent further blockage. The floating nature of the floating cigarette guide wheel 302 also facilitates the clearing of blockages in case of abnormal blockage.

[0029] Referring to Figure 4, the longitudinal positioning mechanism 4 for cigarettes includes a positioning cylinder 401, a rod end joint bearing 402, a connecting member 403, a guide member 404, and an inner positioning plate 405. The positioning cylinder 401 pushes the rod end joint bearing 402, which in turn causes the connecting member 403 to drive the guide member 404 to swing. Through the different states of the guide member 404, cigarettes of different lengths (thin, medium, and thick) can be guided in the cigarette chute, aligning the end face of the cigarette with the inner positioning plate 405. This achieves axial positioning of cigarettes of different lengths on the cigarette chuck 301.

[0030] Referring to Figure 5, the cigarette conveying mechanism 5 includes a driving pulley 501, a driven pulley 502, a synchronous belt 503, a tensioning pulley 504, and a wedge-shaped cigarette groove 505. The cigarette drum wheel 301 delivers the cigarette to the conveying mechanism 5. The driving pulley 501 and driven pulley 502 drive the synchronous belt 503, which in turn moves the cigarette within the wedge-shaped cigarette groove 505 in the direction of movement. Referring to Figure 6, the cigarette rotating mechanism 6 includes a drive motor 601, a driving circular pulley 602, a driven circular pulley 603, and a circular belt 604. The drive motor 601 drives the circular belt 604 to rotate. The linear velocity of the circular belt 604 is faster than that of the synchronous belt 503. Utilizing the difference in linear velocity between the circular belt 604 and the synchronous belt 503, the cigarette rotates within the wedge-shaped cigarette groove 505, allowing the appearance inspection component 7 to detect the entire cylindrical surface of the cigarette. The cigarette conveying mechanism 5 and the cigarette rotating mechanism 6 cooperate to convey the cigarette in the inspection direction. As the cigarette moves forward with the cigarette conveying mechanism 5, the appearance inspection component 7 can detect the entire cylindrical surface of the cigarette. This method reliably ensures that the cigarette rotates within the wedge-shaped cigarette groove 505, avoiding the slippage phenomenon that commonly occurs in cigarette rotating mechanisms.

[0031] Referring to Figure 7, the appearance detection component 7 includes a first light source 701, a second light source 702, a third light source 703, a fourth light source 704, a first camera 705, a second camera 706, a third camera 707, and an adjusting cylinder 708. The first light source 701 and the second light source 702 provide supplementary lighting to the cylindrical surface of the cigarette; the third light source 703 provides supplementary lighting to the end face of the cigarette filter; the fourth light source 704 provides supplementary lighting to the lit end face of the cigarette; the first camera 705 uses a plane mirror to reflect and acquire an image of the cylindrical surface of the cigarette; the second camera 706 uses a plane mirror to reflect and acquire an image of the lit end face of the cigarette; the third camera 707 uses a plane mirror to reflect and acquire an image of the end face of the cigarette filter; the adjusting cylinder 708 controls the movement of the third camera 707. The purpose of controlling the movement of the third camera 707 is to adjust the object distance so that cigarettes of different lengths can be focused and the acquired images are clear, thus meeting the detection requirements of cigarettes of different lengths. Referring to Figure 8, the rejection mechanism 8 includes a solenoid valve fixing plate 801, a solenoid valve 802, and a gas nozzle 803. When the cigarettes conveyed by the cigarette conveying mechanism 5 arrive at the rejection mechanism 8, the rejection mechanism 8 releases or rejects the moving cigarettes based on the good or bad signal given by the algorithm after the appearance detection component 7 has acquired the image.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A multi-specification cigarette conveying and appearance inspection device, characterized in that: The system includes a frame (1), a tobacco pile conveying mechanism (2), a separate tobacco picking mechanism (3), a cigarette longitudinal positioning mechanism (4), a cigarette conveying mechanism (5), a cigarette rotating mechanism (6), an appearance inspection component (7), and a rejection mechanism (8). The tobacco pile conveying mechanism (2) conveys the tobacco pile in the tobacco storage frame to the separate tobacco picking mechanism (3). The separate tobacco picking mechanism (3) uses a rotating tobacco picking drum to individually pick out the cigarettes from the tobacco pile, and the individually separated cigarettes are conveyed to the cigarette conveying mechanism (5). The cigarette longitudinal positioning mechanism (4) uses an actuating cylinder to... The action causes the guide to swing, thereby positioning cigarettes of different lengths to meet the cigarette alignment requirements of the appearance inspection component (7); the cigarette conveying mechanism (5) uses a conveyor belt as the main conveyor to convey cigarettes; the cigarette rotating mechanism (6) drives the cigarettes in the wedge groove of the cigarette conveying mechanism to rotate through the speed difference with the cigarette conveying mechanism (5); the inspection component (7) performs appearance quality inspection on the conveyed cigarettes; cigarettes that fail the quality inspection feedback from the inspection component (7) are blown out of the conveying line by the rejection mechanism (8).

2. The multi-specification cigarette conveying and appearance inspection equipment according to claim 1, characterized in that: The tobacco stack conveying mechanism (2) includes a tobacco storage frame (201), a tobacco stack conveyor belt (202) inside the tobacco frame, a tobacco taking bin (203), and a tobacco stick conveyor belt (204) inside the tobacco taking bin. The tobacco storage frame (201) is used for feeding and assists in controlling the status of the tobacco sticks when taking tobacco sticks in the lower process. The tobacco stack conveyor belt (202) inside the tobacco frame is driven by a motor to move the flat belt and convey the tobacco stack in the tobacco storage frame (201) forward. The tobacco taking bin (203) is used to store the tobacco sticks conveyed by the tobacco stack conveyor belt (202) inside the tobacco frame and cooperates with the separate tobacco taking mechanism (3) to take out the tobacco sticks.

3. The multi-specification cigarette conveying and appearance detection apparatus according to claim 2, characterized in that: The cigarette conveyor belt (204) in the cigarette collection compartment is speed-matched to the rotational speed of the cigarette collection drum (301) of the cigarette collection mechanism (3), so that the top of the cigarettes in the cigarette storage frame (201) remains flat as the number of cigarettes gradually decreases.

4. The multi-specification cigarette conveying and appearance detection apparatus according to claim 1, characterized in that: The separate cigarette taking mechanism (3) includes a cigarette taking drum wheel (301), a floating cigarette taking wheel (302), an auxiliary guard plate (303), and a cigarette holder detection sensor (304). The cigarette taking drum wheel (301) rotates to take out cigarettes one by one from the cigarette taking chamber (203). The floating cigarette taking wheel (302) rotates in the opposite direction to the cigarette taking drum wheel (301) and can circulate the cigarettes brought by the cigarette taking drum wheel (301) in the cigarette taking chamber (203). When the floating cigarette taking wheel (302) encounters resistance, it can float up. When the travel reaches a certain position, the sensor can report the abnormal working state to the host. The cigarette holder detection sensor (304) can detect the cigarette taking status of the cigarette taking drum wheel (301) and can also monitor whether there are still cigarettes in the cigarette taking chamber (203).

5. The multi-specification cigarette conveying and appearance inspection equipment according to claim 1, characterized in that: The longitudinal positioning mechanism (4) of the cigarette includes a positioning cylinder (401), a rod end joint bearing (402), a connector (403), a guide (404), and an inner positioning plate (405). The positioning cylinder (401) pushes the rod end joint bearing (402), and then the connector (403) drives the guide (404) to swing. Through the different states of the guide (404), cigarettes of different lengths can be guided in the cigarette trough, and the end face of the cigarette can be aligned with the inner positioning plate (405).

6. The multi-specification cigarette conveying and appearance inspection equipment according to claim 5, characterized in that: The cigarette conveying mechanism (5) includes a driving pulley (501), a driven pulley (502), a synchronous belt (503), a tensioning pulley (504), and a wedge-shaped cigarette groove (505). The cigarette drum wheel (301) delivers the cigarette to the conveying mechanism (5). The driving pulley (501) and the driven pulley (502) drive the synchronous belt (503) to move, which in turn drives the cigarette in the wedge-shaped cigarette groove (505) to move in the direction of movement.

7. The multi-specification cigarette conveying and appearance inspection equipment according to claim 1, characterized in that: The cigarette rotation mechanism (6) includes a drive motor (601), a driving pulley (602), a driven pulley (603), and a circular belt (604). The drive motor (601) drives the circular belt (604) to rotate. The linear speed of the circular belt (604) is faster than that of the synchronous belt (503). By utilizing the difference in linear speed between the circular belt (604) and the synchronous belt (503), the cigarette is driven to rotate in the wedge-shaped cigarette groove (505). The purpose is that the appearance inspection component (7) can detect the entire cylindrical surface of the cigarette.

8. The multi-specification cigarette conveying and appearance inspection equipment according to claim 1, characterized in that: The appearance inspection component (7) includes a first light source (701), a second light source (702), a third light source (703), a fourth light source (704), a first camera (705), a second camera (706), a third camera (707), and an adjustment cylinder (708). The first light source (701) and the second light source (702) provide supplementary lighting to the cylindrical surface of the cigarette; the third light source (703) provides supplementary lighting to the end face of the cigarette filter; the fourth light source (704) provides supplementary lighting to the lit end face of the cigarette; the first camera (705) uses a plane mirror to reflect and acquire an image of the cylindrical surface of the cigarette; the second camera (706) uses a plane mirror to reflect and acquire an image of the lit end face of the cigarette; the third camera (707) uses a plane mirror to reflect and acquire an image of the end face of the cigarette filter; the adjustment cylinder (708) controls the movement of the third camera (707); the purpose of controlling the movement of the third camera (707) is to adjust the object distance so that cigarettes of different lengths can be focused and the acquired images are clear, thus meeting the inspection requirements of cigarettes of different lengths.

9. The multi-specification cigarette conveying and appearance detection apparatus according to claim 1, characterized in that: The rejection mechanism (8) includes a solenoid valve fixing plate (801), a solenoid valve (802), and a nozzle (803). When the cigarettes conveyed by the cigarette conveying mechanism (5) arrive at the rejection mechanism (8), the rejection mechanism (8) releases or rejects the moving cigarettes based on the good or bad signal given by the algorithm after the appearance detection component (7) takes the picture.

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