A cigarette brand stamp detection method, device and cigarette production system

Abstract

The present application belongs to the technical field of cigarette production, and discloses a cigarette band detection method, a cigarette band detection device and a cigarette production system. The method comprises the following steps: obtaining images of a first image part and a second image part; obtaining a first concentration value and a second concentration value according to the first image part and the second image part; determining whether the first concentration value and the second concentration value are within a minimum threshold value of printing concentration and a maximum threshold value of printing concentration; if not, determining that the cigarette band is unqualified; if yes, further obtaining a deviation value representing the concentration difference between the first image part and the second image part; determining whether the deviation value is within a minimum threshold value of printing concentration difference and a maximum threshold value of printing concentration difference; if yes, determining that the cigarette band printing is qualified; if not, determining that the cigarette band printing is unqualified. The cigarette band detection device applies the above method. The cigarette production system comprises the above device. The cigarette band detection method can detect cigarette bands with "yin and yang surfaces", and improve the qualification rate of cigarette bands.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette production, and particularly to a method and device for detecting a cigarette steel seal and a cigarette production system. Background Art

[0002] Currently, cigarette papers of cigarettes are generally printed with cigarette steel seals, and the cigarette steel seals can have information on the production batches of cigarettes and can also be used to distinguish the authenticity of cigarettes.

[0003] In related technologies, there is a device for detecting a cigarette steel seal, which needs to import a qualified cigarette steel seal image as a template, record the image of the cigarette produced online, and compare the similarity with the template image. Among them, a maximum threshold and a minimum threshold for the concentration of the cigarette steel seal are generally set during the detection process. When the overall concentration of the cigarette steel seal is within the range of the maximum threshold and the minimum threshold, it is considered to have a high similarity with the template image, and it is determined that the printing of the cigarette steel seal is qualified according to the concentration index. Otherwise, it is considered that the difference from the template image is too large and is determined to be unqualified.

[0004] However, this judgment method can only ensure that the overall concentration of the cigarette steel seal meets the requirements, but there will still be some cigarette steel seals with "yin-yang surfaces", that is, the concentration on one side of the cigarette steel seal is too light and the concentration on the other side is too deep. For example, one of the two ear of wheat parts symmetrical to the cigarette steel seal is too light and the other is too deep. Such cigarette steel seals also do not meet the requirements in appearance and affect the qualification rate of batches of cigarettes. Therefore, how to further screen out the cigarette steel seals with "yin-yang surfaces" and ensure the qualification rate of cigarettes has become the direction of efforts of technicians in the field. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for detecting a cigarette steel seal, which can detect the cigarette steel seal with "yin-yang surface" printed on the cigarette.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A method for detecting a cigarette steel seal, which is used to detect the printing quality of the cigarette steel seal. The cigarette steel seal is printed on the cigarette, and the cigarette steel seal has a first image part and a second image part. The method for detecting the cigarette steel seal includes the following steps:

[0008] S100. Obtain images of the first image part and the second image part;

[0009] S200. Obtain A value and B value according to the first image part and the second image part; where A is a first concentration value corresponding to the first image part, and B is a second concentration value corresponding to the second image part;

[0010] S300. Determine whether A and B satisfy: S1 < A < S2 and S1 < B < S2; where S1 is the minimum threshold for the printing concentration of the qualified cigarette stamp, and S2 is the maximum threshold for the printing concentration of the qualified cigarette stamp.

[0011] If yes, proceed to step S400; if no, determine that the cigarette stamp printing is unqualified.

[0012] S400. Obtain the deviation value C based on A and B. C is used to characterize the concentration difference between the first image portion and the second image portion.

[0013] S500. Determine whether C satisfies: S3 < C < S4; where S3 is the minimum threshold of the printing density difference of the qualified cigarette steel stamp, and S4 is the maximum threshold of the printing density difference of the qualified cigarette steel stamp.

[0014] If yes, the cigarette stamp printing is deemed qualified; if no, the cigarette stamp printing is deemed unqualified.

[0015] Preferably, in step S100, both the first concentration value A and the second concentration value B are binary values.

[0016] Preferably, in step S400, the C value is obtained by the following formula:

[0017] When A < B, C = ABD;

[0018] When A > B, C = A - B + D;

[0019] Where D is the compensation constant, and D > 0.

[0020] Preferably, when the cigarette stamp is determined to be defective, the cigarette containing the defective cigarette stamp is rejected.

[0021] The present invention also provides a cigarette stamp detection device. The above-mentioned cigarette stamp detection method can detect cigarette stamps with "yin-yang" printing on them, thereby improving the pass rate of cigarette stamps.

[0022] A cigarette stamp detection device, employing any one of the cigarette stamp detection methods described above, wherein the cigarette stamp detection device includes a recording device, a visual inspection device, a rejection device, and a controller; wherein...

[0023] The recording device is communicatively connected to the visual inspection device, and both the visual inspection device and the rejection device are communicatively connected to the controller.

[0024] The recording device is used to record an image of the cigarette stamp containing the first image portion and the second image portion on the cigarette stick, and send the image of the cigarette stamp to the visual inspection device. The visual inspection device is used to detect the printing quality of the cigarette stamp based on the recorded image of the cigarette stamp, and send the detection result to the controller. The controller is adapted to control the rejection device to reject the corresponding cigarette stick after receiving the detection result that the cigarette stamp is unqualified.

[0025] Preferably, the device also includes a lighting device for providing illumination to the recording device.

[0026] Preferably, a pulse sensor is also included, and both the pulse sensor and the lighting device are communicatively connected to the controller;

[0027] The pulse sensor is adapted to send a signal to the controller when it passes through the recording area of ​​the recording device, so that the controller controls the recording device to record and simultaneously controls the lighting device to work.

[0028] Preferably, the device further includes a display device, which is communicatively connected to the visual inspection device, and is used to display an image of the cigarette stamp being defective.

[0029] The present invention also provides a cigarette production system. The cigarette stamp detection device described above can detect cigarette stamps with "yin-yang" printing on them, thereby improving the pass rate of cigarette stamps.

[0030] A cigarette production system includes the cigarette stamp detection device described in any one of the above claims, and the cigarette production system further includes:

[0031] A conveyor belt for transporting cigarettes, with the recording device positioned above the conveyor belt;

[0032] A cigarette printing roller is positioned above the conveyor belt and is used to print cigarette stamps onto the cigarettes conveyed on the conveyor belt.

[0033] Preferably, the system further includes a plurality of conveyor rollers rotatably mounted on a frame, with the conveyor belt wound around the plurality of conveyor rollers.

[0034] Beneficial effects:

[0035] The cigarette steel seal detection method provided by the present invention first obtains the images of the first image part and the second image part on the cigarette steel seal, obtains the first concentration value A according to the image of the first image part, obtains the second concentration value B according to the image of the second image part, and determines whether A and B satisfy S1 < A < S2 and S1 < B < S2, that is, whether both A and B are within the threshold range of the minimum printing concentration threshold S1 and the maximum printing concentration threshold S2. If it is determined to be no at this step, it indicates that the overall concentration of the cigarette steel seal does not meet the printing requirements, and it is determined as unqualified printing; if it is determined to be yes, it indicates that the overall concentration of the cigarette steel seal meets the requirements, and then it is further determined whether there is a "yin-yang surface" phenomenon on the cigarette steel seal. Specifically, a deviation value C that can represent the concentration difference between the first image part and the second image part is obtained according to A and B, and it is determined whether C satisfies S3 < C < S4, that is, whether C is within the threshold range of the minimum threshold S3 and the maximum threshold S4 of the printing concentration difference. If it is determined to be yes, it indicates that the concentration difference between the first image part and the second image part meets the threshold requirements, and the cigarette steel seal is determined as qualified printing; if it is determined to be no, it indicates that the concentration difference between the first image part and the second image part is too large, that is, the cigarette steel seal is a "yin-yang surface" steel seal, and the cigarette steel seal is determined as unqualified printing. This method can further screen out the cigarette steel seals with "yin-yang surfaces", avoid the situation where one side of the cigarette steel seal has too light concentration and the other side has too deep concentration, and improve the qualification rate of the cigarette steel seals.

[0036] The cigarette steel seal detection device provided by the present invention applies the above cigarette steel seal detection method. The image of the cigarette steel seal containing the first image part and the second image part on the cigarette is recorded by a video recording device, and the image of the cigarette steel seal is sent to a vision detection device. In the vision detection device, steps such as obtaining the first concentration value A and the second concentration value B, comparing A and B with S1 and S2 respectively, obtaining the deviation value C, and comparing C with S3 and S4 are carried out to detect the printing quality of the cigarette steel seal, so as to determine whether the cigarette steel seal is qualified, and the corresponding cigarette is removed by a controller controlling a rejection device to ensure the qualification rate of the cigarettes on the production line.

[0037] The cigarette production system provided by the present invention includes the above cigarette steel seal detection device. The conveyor belt transports the cigarettes to the video recording device, so that the video recording device records the images of the cigarette steel seals of the cigarettes and conducts the above detection work, and detects the cigarette steel seals with "yin-yang surfaces" printed on the cigarettes, improving the qualification rate of the cigarette steel seals. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a flowchart of the cigarette steel seal detection method provided by the present invention;

[0039] <{ Figure 2 is a schematic diagram of the cigarette steel seal to be detected provided by the present invention;

[0040] Figure 3 This is a simplified diagram of the components of the cigarette stamp detection device provided by the present invention.

[0041] In the picture:

[0042] 01. First image unit; 02. Second image unit; 03. Third image unit; 04. Fourth image unit; 05. Fifth image unit;

[0043] 1. Recording equipment; 2. Visual inspection equipment; 3. Rejection equipment; 4. Controller; 5. Lighting equipment; 6. Pulse sensor; 7. Display equipment. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] This embodiment provides a method for detecting the cigarette brand mark. Refer to Figures 1 to 3 As shown, the method for detecting the cigarette brand mark is used to detect the printing quality of the cigarette brand mark. The cigarette brand mark is printed on the cigarette, and the cigarette brand mark has a first image part 01 and a second image part 02.

[0049] Exemplarily, refer to Figure 2 As shown, in this embodiment, the first image part 01 and the second image part 02 respectively correspond to two wheat ear spike parts symmetrically arranged on the cigarette brand mark.

[0050] Continue to refer to Figures 1 to 3 As shown, the method for detecting the cigarette brand mark mainly includes the following steps:

[0051] S100. Obtain images of the first image part 01 and the second image part 02.

[0052] S200. Obtain A value and B value according to the first image part 01 and the second image part 02; where A is the first concentration value corresponding to the first image part 01, and B is the second concentration value corresponding to the second image part 02.

[0053] S300. Judge whether A and B satisfy: S1 < A < S2 and S1 < B < S2; where S1 is the minimum threshold of the printing concentration of a qualified cigarette brand mark, and S2 is the maximum threshold of the printing concentration of a qualified cigarette brand mark;

[0054] If so, perform step S400; if not, judge that the printing of the cigarette brand mark is unqualified.

[0055] S400. Obtain a deviation value C according to A and B, and C is used to characterize the concentration difference between the first image part 01 and the second image part 02;

[0056] S500. Judge whether C satisfies: S3 < C < S4; where S3 is the minimum threshold of the printing concentration difference of a qualified cigarette brand mark, and S4 is the maximum threshold of the printing concentration difference of a qualified cigarette brand mark;

[0057] If so, judge that the printing of the cigarette brand mark is qualified; if not, judge that the printing of the cigarette brand mark is unqualified.

[0058] In this embodiment, images of the first image portion 01 and the second image portion 02 on the cigarette stamp are first acquired. A first concentration value A is obtained from the image of the first image portion 01, and a second concentration value B is obtained from the image of the second image portion 02. It is then determined whether A and B satisfy S1 < A < S2 and S1 < B < S2, that is, whether A and B are both within the threshold range of the minimum printing concentration threshold S1 and the maximum printing concentration threshold S2. If the determination is negative at this step, it indicates that the overall concentration of the cigarette stamp does not meet the printing requirements, and the printing is deemed unqualified. If the determination is positive, it indicates that the overall concentration of the cigarette stamp meets the requirements, and then it is further determined whether the cigarette stamp has a "yin-yang" phenomenon. Specifically, a deviation value C that can characterize the concentration difference between the first image portion 01 and the second image portion 02 is obtained from A and B, and it is determined whether C satisfies S3 < C < S4, that is, whether C is within the threshold range of the minimum printing concentration difference threshold S3 and the maximum printing concentration difference threshold S4. If the determination is yes, it indicates that the density difference between the first image unit 01 and the second image unit 02 meets the threshold requirement, and the cigarette stamp printing is deemed qualified. If the determination is no, it indicates that the density difference between the first image unit 01 and the second image unit 02 is too large, meaning the cigarette stamp is a "yin-yang" stamp, and the cigarette stamp is deemed unqualified. This method can further filter out "yin-yang" cigarette stamps, avoiding situations where one side of the cigarette stamp has too light a density and the other side has too dark a density, thus improving the pass rate of cigarette stamps.

[0059] For example, with Figure 2 Taking the cigarette stamp as an example, in addition to the first image unit 01 and the second image unit 02, it also includes a third image unit 03, a fourth image unit 04, and a fifth image unit 05. Specifically, the third image unit 03 corresponds to the upper half of the text on the cigarette stamp, the fourth image unit 04 corresponds to the lower half of the text on the cigarette stamp, and the fifth image unit 05 corresponds to the numerical serial number portion of the cigarette stamp. The third image unit 03, the fourth image unit 04, and the fifth image unit 05 can also be applied to the method described above to achieve concentration detection and "yin-yang" detection. For example, concentration comparison can be achieved between the third image unit 03 and the fourth image unit 04, or concentration comparison can be achieved between the first image unit 01 and the fifth image unit 05.

[0060] For example, the minimum printing density threshold S1 is preferably set to 20, and the maximum printing density threshold S2 is preferably set to 450. Specifically, if it is determined that A and B satisfy 20 < A < 450 and 20 < B < 450, it indicates that the overall density of the cigarette stamp meets the requirements; otherwise, it indicates that the overall density of the cigarette stamp does not meet the printing requirements.

[0061] For example, the minimum threshold value S1 for the printing density difference is preferably set to -350, and the maximum threshold value S2 for the printing density difference is preferably set to 350. Specifically, if it is determined that C satisfies -350 < C < 350, it indicates that the density difference between the first image unit 01 and the second image unit 02 meets the threshold requirement, and the cigarette stamp printing is deemed qualified; if it is determined otherwise, it indicates that the density difference between the first image unit 01 and the second image unit 02 is too large, that is, the cigarette stamp is a "yin-yang" stamp, and the cigarette stamp is deemed unqualified.

[0062] In this embodiment, in step S100, both the first concentration value A and the second concentration value B are binarized values.

[0063] In this embodiment, in step S400, the value of C is obtained by the following formula:

[0064] When A < B, C = ABD;

[0065] When A > B, C = A - B + D;

[0066] Where D is the compensation constant, and D > 0.

[0067] Specifically, when A < B, AB is negative, and we need to subtract D to get the corresponding C. When A > B, AB is positive, and we need to add D to get the corresponding C.

[0068] For example, the value of D is set to 150. The value of D is adaptively set according to the process control requirements such as the size, color, and concentration of the cigarette stamp.

[0069] In this embodiment, when the cigarette stamp is determined to be unqualified, the cigarettes containing the unqualified cigarette stamp are rejected.

[0070] This embodiment also provides a cigarette stamp detection device, which applies the above-described cigarette stamp detection method. The cigarette stamp detection device includes a recording device 1, a visual inspection device 2, a rejection device 3, and a controller 4.

[0071] in,

[0072] The recording device 1 is communicatively connected to the visual inspection device 2, and both the visual inspection device 2 and the rejection device 3 are communicatively connected to the controller 4. The recording device 1 is used to record images of cigarette stamps containing a first image part 01 and a second image part 02 on the cigarettes, and sends the images of the cigarette stamps to the visual inspection device 2. The visual inspection device 2 is used to detect the printing quality of the cigarette stamps based on the recorded images of the cigarette stamps, and sends the detection results to the controller 4. The controller 4 is adapted to control the rejection device 3 to reject the corresponding cigarettes after receiving a detection result indicating that the cigarette stamps are unqualified.

[0073] In this embodiment, the cigarette stamp inspection device applies the above-described cigarette stamp inspection method. The recording device 1 captures an image of the cigarette stamp containing the first image portion 01 and the second image portion 02 on the cigarette, and sends the image to the vision inspection device 2. The vision inspection device 2 performs steps such as acquiring the first concentration value A and the second concentration value B, comparing A and B with S1 and S2 respectively, acquiring the deviation value C, and comparing C with S3 and S4 to detect the printing quality of the cigarette stamp, thereby determining whether the cigarette stamp is qualified. Furthermore, the controller 4 controls the rejection device 3 to reject the corresponding cigarette, ensuring the pass rate of cigarettes on the production line.

[0074] For example, the recording device 1 is configured as a color high-speed camera.

[0075] For example, controller 4 is configured as PLC controller 4.

[0076] For example, the rejection device 3 can be configured as a rejection cylinder or as a mechanical gripper.

[0077] Furthermore, the cigarette stamp detection device also includes a lighting device 5, which provides illumination to the recording device 1. This ensures that the recording device 1 has sufficient light during image acquisition, thereby guaranteeing the quality of the captured images.

[0078] For example, the lighting device 5 is configured as an LED light source.

[0079] Furthermore, the cigarette stamp detection device also includes a pulse sensor 6, and both the pulse sensor 6 and the lighting device 5 are communicatively connected to the controller 4. The pulse sensor 6 is adapted to send a signal to the controller 4 when a cigarette passes through the recording area of ​​the recording device 1, causing the controller 4 to control the recording device 1 to record, and simultaneously control the lighting device 5 to operate. Specifically, the pulse sensor 6 is used as a trigger signal to trigger image capture. When the pulse sensor 6 emits a trigger pulse, the signal is input to the controller 4. This causes the controller 4 to control the lighting device 5 to turn on once, providing a light source for capturing the cigarette stamp, and then the controller 4 controls the recording device 1 to take one image.

[0080] Furthermore, the cigarette stamp inspection device also includes a display device 7, which is communicatively connected to the vision inspection device 2. The display device 7 is used to display images of unqualified cigarette stamps. This allows operators to observe the causes of unqualified cigarette stamps in real time, adaptively adjust the printing process, and improve the printing quality of subsequent batches.

[0081] This embodiment also provides a cigarette production system, including the aforementioned cigarette stamp detection device. The cigarette production system further includes a conveyor belt and a cigarette printing roller. The conveyor belt is used to transport cigarettes, the recording device 1 is located above the conveyor belt, and the cigarette printing roller is located above the conveyor belt for printing cigarette stamps on the cigarettes transported on the conveyor belt.

[0082] Specifically, there is a recording position along the conveyor belt's conveying direction, and the recording device 1 is located at the recording position. When the conveyor belt conveys a cigarette to the area below the recording device 1 and enters the recording area, the controller 4 controls the recording device 1 to perform recording via the pulse sensor 6, and simultaneously controls the lighting device 5 to operate.

[0083] For example, in this embodiment, multiple cigarette printing rollers may be provided, each used for printing cigarette stamps of different colors.

[0084] Furthermore, the cigarette production system also includes multiple conveyor rollers rotatably mounted on the frame, with a conveyor belt wound around these rollers. Specifically, the rotation of the conveyor rollers drives the conveyor belt to perform the conveying operation.

[0085] The cigarette production system provided in this embodiment includes the above-mentioned cigarette stamp detection device. The conveyor belt transports cigarettes to the camera 1, so that the camera 1 captures the image of the cigarette stamp and performs the above-mentioned detection work, detecting cigarette stamps with "yin-yang sides" printed on the cigarettes, thereby improving the pass rate of cigarette stamps.

[0086] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for detecting cigarette stamp printing quality, wherein the cigarette stamp is printed on the cigarette, and the cigarette stamp has a first image portion (01) and a second image portion (02), characterized in that, The method for detecting cigarette stamps includes the following steps: S100: Acquire images of the first image unit (01) and the second image unit (02); S200: A value and B value are obtained according to the first image unit (01) and the second image unit (02); wherein, A is a first concentration value corresponding to the first image unit (01) and B is a second concentration value corresponding to the second image unit (02); S300. Determine whether A and B satisfy: S1 < A < S2 and S1 < B < S2; where S1 is the minimum threshold for the printing concentration of the qualified cigarette stamp, and S2 is the maximum threshold for the printing concentration of the qualified cigarette stamp. If yes, proceed to step S400; if no, determine that the cigarette stamp printing is unqualified. S400. Obtain the deviation value C based on A and B. C is used to characterize the concentration difference between the first image part (01) and the second image part (02). S500. Determine whether C satisfies: S3 < C < S4; where S3 is the minimum threshold of the printing density difference of the qualified cigarette steel stamp, and S4 is the maximum threshold of the printing density difference of the qualified cigarette steel stamp. If yes, the cigarette stamp printing is deemed qualified; if no, the cigarette stamp printing is deemed unqualified.

2. The method for detecting cigarette stamps according to claim 1, characterized in that, In step S200, both the first concentration value A and the second concentration value B are binarized values.

3. The method for detecting cigarette stamps according to claim 1, characterized in that, In step S400, the deviation value C is obtained using the following formula: When A < B, C = ABD; When A > B, C = A - B + D; Where D is the compensation constant, and D > 0.

4. The method for detecting cigarette stamps according to claim 1, characterized in that, If the cigarette stamp is determined to be defective, the cigarette containing the defective stamp will be rejected.

5. A cigarette stamp detection device, characterized in that, The cigarette stamp detection method according to any one of claims 1-4, wherein the cigarette stamp detection device includes a recording device (1), a visual inspection device (2), a rejection device (3), and a controller (4); wherein, The recording device (1) is communicatively connected to the visual inspection device (2), and both the visual inspection device (2) and the rejection device (3) are communicatively connected to the controller (4). The recording device (1) is used to record the image of the cigarette stamp containing the first image part (01) and the second image part (02) on the cigarette, and send the image of the cigarette stamp to the visual inspection device (2). The visual inspection device (2) is used to detect the printing quality of the cigarette stamp according to the recorded image of the cigarette stamp, and send the detection result to the controller (4). The controller (4) is adapted to control the rejection device (3) to reject the corresponding cigarette after receiving the detection result that the cigarette stamp is unqualified.

6. The cigarette stamp detection device according to claim 5, characterized in that, It also includes a lighting device (5) for providing illumination to the recording device (1).

7. The cigarette stamp detection device according to claim 6, characterized in that, It also includes a pulse sensor (6), and both the pulse sensor (6) and the lighting device (5) are communicatively connected to the controller (4); The pulse sensor (6) is adapted to send a signal to the controller (4) when it passes the cigarette in the recording area of ​​the recording device (1), so that the controller (4) controls the recording device (1) to record and simultaneously controls the lighting device (5) to work.

8. The cigarette stamp detection device according to claim 5, characterized in that, It also includes a display device (7), which is communicatively connected to the visual inspection device (2), and the display device (7) is used to display an image of the cigarette stamp being unqualified.

9. A cigarette manufacturing system, characterized in that, The cigarette production system includes the cigarette stamp detection device according to any one of claims 5-8, and further includes: A conveyor belt for conveying cigarettes, and the recording device (1) is located above the conveyor belt; A cigarette printing roller is positioned above the conveyor belt and is used to print cigarette stamps onto the cigarettes conveyed on the conveyor belt.

10. The cigarette production system according to claim 9, characterized in that, It also includes a plurality of conveyor rollers rotatably mounted on the frame, and the conveyor belt is wound around the plurality of conveyor rollers.

Images