Cigarette steel seal detection method and device and cigarette production system

Abstract

The invention belongs to the technical field of cigarette production, and discloses a cigarette steel seal detection method and device and a cigarette production system.The method comprises the steps that images of a first image part and images of a second image part are obtained, and a first concentration value and a second concentration value are correspondingly obtained according to the first image part and the second image part; judging whether the first concentration value and the second concentration value are within a printing concentration minimum threshold value and a printing concentration maximum threshold value or not, if not, judging that the cigarette steel seal is unqualified, and if yes, further obtaining a deviation value representing the concentration difference between the first image part and the second image part; whether the deviation value is within the minimum threshold value of the printing concentration difference and the maximum threshold value of the printing concentration difference or not is judged, if yes, it is judged that the cigarette steel seal printing is qualified, and if not, it is judged that the cigarette steel seal printing is unqualified; the method is applied to the cigarette steel seal detection device. The cigarette production system comprises the device. According to the cigarette steel seal detection method, the cigarette steel seal of the positive and negative surfaces can be detected, and the qualified rate of the cigarette steel seal is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette production, and in particular to a cigarette steel print detection method and device and a cigarette production system. Background Art

[0002] At present, cigarette paper is generally printed with a cigarette stamp, which can contain information about the production batch of the cigarette and can also be used to identify the authenticity of the cigarette.

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

[0004] However, this judgment method can only ensure that the overall density of the cigarette stamp meets the requirements, but there will still be some cigarette stamps with "yin and yang sides", that is, the density on one side of the cigarette stamp is too light, and the density on the other side is too dark. For example, the two symmetrical ears of rice on the cigarette stamp are one too light and the other too dark. This cigarette stamp does not meet the requirements in appearance, affecting the qualified rate of batches of cigarettes. Therefore, how to further screen out the "yin and yang side" cigarette stamps and ensure the qualified rate of cigarettes has become the direction of efforts of technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a cigarette steel stamp detection method, which can detect cigarette steel stamps with "positive and negative sides" printed on cigarettes.

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

[0007] A cigarette steel stamp detection method is used to detect the printing quality of a cigarette steel stamp, wherein the cigarette steel stamp is printed on the cigarette, and the cigarette steel stamp has a first image portion and a second image portion. The cigarette steel stamp detection method comprises the following steps:

[0008] S100, acquiring images of the first image portion and the second image portion;

[0009] S200, obtaining an A value and a B value according to the correspondence between the first image portion and the second image portion; wherein A is a first density value corresponding to the first image portion, and B is a second density value corresponding to the second image portion;

[0010] S300, judging whether A and B satisfy: S1<A<S2 and S1<B<S2; wherein S1 is the minimum threshold value of the printing density of the qualified cigarette steel stamp, and S2 is the maximum threshold value of the printing density of the qualified cigarette steel stamp;

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

[0012] S400, obtaining a deviation value C according to A and B, where C is used to represent a density difference between the first image portion and the second image portion;

[0013] S500, judging whether C satisfies: S3<C<S4; wherein 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 so, it is judged that the steel stamp printing of the cigarette is qualified; if not, it is judged that the steel stamp printing of the cigarette is unqualified.

[0015] Preferably, in step S100, the first concentration value A and the second concentration value B are both 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] Wherein, D is the compensation constant, D>0.

[0020] Preferably, when the cigarette stamp is judged to be unqualified in printing, the cigarettes containing the unqualified cigarette stamp will be discarded.

[0021] The present invention also provides a cigarette steel print detection device, which can detect cigarette steel prints with "positive and negative sides" printed on cigarettes by using the above-mentioned cigarette steel print detection method, thereby improving the pass rate of cigarette steel prints.

[0022] A cigarette steel mark detection device, using any of the above-mentioned cigarette steel mark detection methods, the cigarette steel mark detection device comprises a recording device, a visual detection 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 the cigarette stamp image containing the first image part and the second image part on the cigarette, 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 suitable for controlling the rejection device to reject the corresponding cigarette after receiving the detection result that the cigarette stamp is unqualified.

[0025] Preferably, the device further comprises a lighting device, wherein the lighting device is used to provide lighting for the recording device.

[0026] Preferably, it further comprises a pulse sensor, wherein both the pulse sensor and the lighting device are communicatively connected to the controller;

[0027] The pulse sensor is suitable for sending a signal to the controller when the cigarette passes through the recording area of ​​the recording device, so that the controller controls the recording device to record and controls the lighting device to work at the same time.

[0028] Preferably, a display device is further included, which is communicatively connected to the visual inspection device, and is used to display an image of the cigarette with unqualified steel stamp.

[0029] The present invention also provides a cigarette production system, which uses the above-mentioned cigarette steel stamp detection device to detect cigarette steel stamps with "positive and negative sides" printed on cigarettes, thereby improving the pass rate of cigarette steel stamps.

[0030] A cigarette production system, comprising any one of the cigarette steel stamp detection devices described above, the cigarette production system further comprising:

[0031] A conveyor belt for conveying cigarettes, wherein the video recording device is arranged above the conveyor belt;

[0032] The cigarette printing roller is arranged above the conveyor belt and is used for printing cigarette steel stamps on the cigarettes conveyed on the conveyor belt.

[0033] Preferably, it further comprises a plurality of conveying rollers rotatably arranged on a frame, and the conveying belt is wound around the plurality of conveying rollers.

[0034] Beneficial effects:

[0035] The cigarette stamp detection method provided by the present invention first obtains the images of the first image part and the second image part on the cigarette stamp, 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 judges 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 it is judged as no in this step, it indicates that the overall concentration of the cigarette stamp does not meet the printing requirements and is judged as unqualified printing; if it is judged as yes, it indicates that the overall concentration of the cigarette stamp meets the requirements, and then it is further judged whether the cigarette stamp has a "yin-yang side" phenomenon. Specifically, a deviation value C that can characterize the concentration difference between the first image part and the second image part is obtained according to A and B, and it is judged 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 judgment is yes, it means that the density difference between the first image part and the second image part meets the threshold requirement, and the cigarette steel stamp is judged to be qualified; if the judgment is no, it means that the density difference between the first image part and the second image part is too large, that is, the cigarette steel stamp is a "yin-yang" steel stamp, and the cigarette steel stamp is judged to be unqualified. This method can further screen out "yin-yang" cigarette steel stamps, avoid the situation where the density of one side of the cigarette steel stamp is too light and the density of the other side is too dark, and improve the qualified rate of cigarette steel stamps.

[0036] The cigarette steel print detection device provided by the present invention applies the above-mentioned cigarette steel print detection method, records the cigarette steel print image containing the first image part and the second image part on the cigarette by a recording device, and sends the cigarette steel print image to a visual detection device, and performs the steps of 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, comparing C with S3 and S4, etc. in the visual detection device to detect the printing quality of the cigarette steel print, thereby judging whether the cigarette steel print is qualified, and controlling the rejection device through the controller to reject the corresponding cigarettes, so as to ensure the qualified rate of cigarettes on the production line.

[0037] The cigarette production system provided by the present invention includes the above-mentioned cigarette steel stamp detection device, and the conveyor belt conveys the cigarettes to the recording device, so that the recording device records the cigarette steel stamp image of the cigarette and performs the above-mentioned detection work, and detects the cigarette steel stamp with "positive and negative sides" printed on the cigarette, thereby improving the qualified rate of the cigarette steel stamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the process of the cigarette steel print detection method provided by the present invention;

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

[0040] Figure 3 It is a schematic diagram of the components of the cigarette steel print detection device provided by the present invention.

[0041] In the figure:

[0042] 01, first image part; 02, second image part; 03, third image part; 04, fourth image part; 05, fifth image part;

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

[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

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

[0049] For example, refer to Figure 2 As shown, the first image portion 01 and the second image portion 02 in this embodiment correspond to two symmetrically arranged wheat ears positions on the cigarette steel stamp.

[0050] Continue to refer to Figures 1 to 3 As shown, the cigarette stamp detection method mainly includes the following steps:

[0051] S100 , acquiring images of the first image portion 01 and the second image portion 02 .

[0052] S200 , obtaining an A value and a B value according to the correspondence between the first image portion 01 and the second image portion 02 ; wherein A is a first density value corresponding to the first image portion 01 , and B is a second density value corresponding to the second image portion 02 .

[0053] S300, judging whether A and B satisfy: S1<A<S2 and S1<B<S2; wherein S1 is the minimum printing density threshold of the qualified cigarette steel stamp, and S2 is the maximum printing density threshold of the qualified cigarette steel stamp;

[0054] If yes, proceed to step S400; if no, determine that the cigarette steel stamp printing is unqualified.

[0055] S400, obtaining a deviation value C according to A and B, where C is used to represent a density difference between the first image portion 01 and the second image portion 02;

[0056] S500, judging whether C satisfies: S3<C<S4; wherein 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;

[0057] If so, it is judged that the cigarette seal printing is qualified; if not, it is judged that the cigarette seal printing is unqualified.

[0058] In this embodiment, firstly, the images of the first image part 01 and the second image part 02 on the cigarette steel stamp are obtained, and the first concentration value A is obtained according to the image of the first image part 01, and the second concentration value B is obtained according to the image of the second image part 02, and it is judged 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 it is judged as no in this step, it indicates that the overall concentration of the cigarette steel stamp does not meet the printing requirements, and it is judged as unqualified printing; if it is judged as yes, it indicates that the overall concentration of the cigarette steel stamp meets the requirements, and it is further judged whether the cigarette steel stamp has a "yin and yang" phenomenon. Specifically, according to A and B, a deviation value C that can characterize the concentration difference between the first image part 01 and the second image part 02 is obtained, and it is judged 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 judgment is yes, it means that the density difference between the first image part 01 and the second image part 02 meets the threshold requirement, and the cigarette steel stamp is judged to be qualified; if the judgment is no, it means that the density difference between the first image part 01 and the second image part 02 is too large, that is, the cigarette steel stamp is a "yin-yang" steel stamp, and the cigarette steel stamp is judged to be unqualified. This method can further screen out the "yin-yang" cigarette steel stamps, avoid the situation where the density of one side of the cigarette steel stamp is too light and the density of the other side is too dark, and improve the qualified rate of cigarette steel stamps.

[0059] For example, Figure 2 Take the cigarette steel stamp in the figure as an example, in addition to the first image part 01 and the second image part 02, it also includes the third image part 03, the fourth image part 04 and the fifth image part 05. Specifically, the third image part 03 corresponds to the upper half of the cigarette steel stamp text, the fourth image part 04 corresponds to the lower half of the cigarette steel stamp text, and the fifth image part 05 corresponds to the digital number part of the cigarette steel stamp. The third image part 03, the fourth image part 04 and the fifth image part 05 can also be applied to the above method to realize concentration detection and "yin and yang side" detection. For example, realize the concentration comparison between the third image part 03 and the fourth image part 04, or realize the concentration comparison between the first image part 01 and the fifth image part 05.

[0060] For example, the value of the minimum printing density threshold S1 is preferably set to 20, and the value of the maximum printing density threshold S2 is preferably set to 450. Specifically, if it is judged 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] Exemplarily, the value of the minimum threshold S1 of the printing density difference is preferably set to -350, and the value of the maximum threshold S2 of the printing density difference is preferably set to 350. Specifically, if it is judged that C satisfies -350<C<350, it indicates that the density difference between the first image part 01 and the second image part 02 meets the threshold requirement, and the cigarette steel print is judged to be qualified; if it is judged to be not, it indicates that the density difference between the first image part 01 and the second image part 02 is too large, that is, the cigarette steel print is a "yin-yang" steel print, and the cigarette steel print is judged to be unqualified.

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

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

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

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

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

[0067] Specifically, when A<B, AB is a negative number, and D needs to be subtracted to get the corresponding C. When A>B, AB is a positive number, and D needs to be added to get the corresponding C.

[0068] Exemplarily, 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 steel stamp.

[0069] In this embodiment, when the cigarette stamp is judged to be unqualified, the cigarettes containing the unqualified cigarette stamp will be discarded.

[0070] This embodiment also provides a cigarette steel print detection device, which applies the above-mentioned cigarette steel print detection method. The cigarette steel print 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 connected to the visual inspection device 2 in communication, and the visual inspection device 2 and the rejection device 3 are both connected to the controller 4 in communication. The recording device 1 is used to record the cigarette steel stamp image containing the first image part 01 and the second image part 02 on the cigarette, and send the image of the cigarette steel stamp to the visual inspection device 2. The visual inspection device 2 is used to detect the printing quality of the cigarette steel stamp according to the recorded image of the cigarette steel stamp, and send the detection result to the controller 4. The controller 4 is suitable for controlling the rejection device 3 to reject the corresponding cigarette after receiving the detection result of unqualified cigarette steel stamp.

[0073] In this embodiment, the cigarette steel stamp detection device applies the above-mentioned cigarette steel stamp detection method, and records the cigarette steel stamp image containing the first image part 01 and the second image part 02 on the cigarette by the recording device 1, and sends the cigarette steel stamp image to the visual inspection device 2. In the visual inspection device 2, the steps of 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 performed to detect the printing quality of the cigarette steel stamp, thereby judging whether the cigarette steel stamp is qualified, and controlling the rejection device 3 through the controller 4 to reject the corresponding cigarette, so as to ensure the qualified rate of cigarettes on the production line.

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

[0075] Exemplarily, the controller 4 is configured as a PLC controller 4 .

[0076] Exemplarily, the rejecting device 3 can be configured as a rejecting cylinder or as a mechanical gripper.

[0077] Furthermore, the cigarette steel stamp detection device further comprises an illumination device 5, which is used to provide illumination for the video recording device 1. It is ensured that the video recording device 1 has sufficient light when performing image acquisition, thereby ensuring the quality of the recorded image.

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

[0079] Furthermore, the cigarette imprint detection device also includes a pulse sensor 6, and the pulse sensor 6 and the lighting device 5 are both communicatively connected to the controller 4. The pulse sensor 6 is suitable for sending a signal to the controller 4 when a cigarette passes through the recording area of ​​the recording device 1, so that the controller 4 controls the recording device 1 to record, and at the same time controls the lighting device 5 to work. Specifically, the pulse sensor 6 is used as a trigger signal to trigger taking pictures. When the pulse sensor 6 sends a trigger pulse, the signal is input to the controller 4. The controller 4 controls the lighting device 5 to turn on once to provide a light source for shooting the cigarette imprint, and then the controller 4 controls the recording device 1 to shoot once.

[0080] Furthermore, the cigarette steel stamp detection device further includes a display device 7, which is communicatively connected to the visual detection device 2 and is used to display images of unqualified cigarette steel stamps, so that operators can observe the causes of unqualified cigarette steel stamps in real time, adjust the printing process adaptively, and improve the printing quality of subsequent batches.

[0081] This embodiment also provides a cigarette production system, including the above-mentioned cigarette steel stamp detection device, and the cigarette production system also includes a conveyor belt and a cigarette printing roller. The conveyor belt is used to convey cigarettes, the video recording device 1 is arranged above the conveyor belt, and the cigarette printing roller is arranged above the conveyor belt to print cigarette steel stamps on the cigarettes conveyed on the conveyor belt.

[0082] Specifically, there is a recording position along the conveying direction of the conveyor belt, and the recording device 1 is located at the recording position. When the conveyor belt conveys cigarettes to the bottom of the recording device 1 and enters the recording area, the controller 4 controls the recording device 1 to record through the pulse sensor 6, and controls the lighting device 5 to work at the same time.

[0083] Exemplarily, in this embodiment, a plurality of cigarette printing rollers may be provided, each for printing cigarette stamps of different colors.

[0084] Furthermore, the cigarette production system further comprises a plurality of conveying rollers rotatably arranged on the frame, and the conveying belt is wound around the plurality of conveying rollers. Specifically, the rotation of the conveying rollers can drive the conveying belt to perform conveying work.

[0085] The cigarette production system provided in this embodiment includes the above-mentioned cigarette steel stamp detection device. The conveyor belt conveys the cigarettes to the recording device 1, so that the recording device 1 records the cigarette steel stamp image of the cigarette and performs the above-mentioned detection work, and detects the cigarette steel stamp with "positive and negative sides" printed on the cigarette, thereby improving the qualified rate of the cigarette steel stamp.

[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 embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cigarette steel stamp detection method, used for detecting the printing quality of a cigarette steel stamp, wherein the cigarette steel stamp is printed on the cigarette, and the cigarette steel stamp has a first image portion (01) and a second image portion (02), characterized in that: The cigarette stamp detection method comprises the following steps: S100, acquiring images of the first image portion (01) and the second image portion (02); S200, obtaining an A value and a B value according to the first image portion (01) and the second image portion (02); wherein A is a first density value corresponding to the first image portion (01), and B is a second density value corresponding to the second image portion (02); S300, judging whether A and B satisfy: S1<A<S2 and S1<B<S2; wherein S1 is the minimum threshold value of the printing density of the qualified cigarette steel stamp, and S2 is the maximum threshold value of the printing density of the qualified cigarette steel stamp; If yes, proceed to step S400; if no, determine that the cigarette steel stamp printing is unqualified; S400, obtaining a deviation value C according to A and B, where C is used to represent a density difference between the first image portion (01) and the second image portion (02); S500, judging whether C satisfies: S3<C<S4; wherein 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 so, it is judged that the steel stamp printing of the cigarette is qualified; if not, it is judged that the steel stamp printing of the cigarette is unqualified.

2. The cigarette stamp detection method according to claim 1, characterized in that: In step S100, the first concentration value A and the second concentration value B are both binary values.

3. The cigarette stamp detection method according to claim 1, characterized in that: In step S400, the C value is obtained by the following formula: When A<B, C=ABD; When A>B, C=A-B+D; Wherein, D is the compensation constant, D>0.

4. The cigarette stamp detection method according to claim 1, characterized in that: When the cigarette stamp is judged to be unqualified in printing, the cigarette containing the unqualified cigarette stamp will be discarded.

5. A cigarette stamp detection device, characterized in that: The cigarette steel print detection method according to any one of claims 1 to 4 is applied, wherein the cigarette steel print detection device comprises a recording device (1), a visual detection device (2), a rejection device (3) and a controller (4); wherein: The recording device (1) is connected to the visual inspection device (2) in communication, and the visual inspection device (2) and the rejection device (3) are both connected to the controller (4) in communication; The recording device (1) is used to record the cigarette stamp image 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 based on the recorded image of the cigarette stamp, and send the detection result to the controller (4). The controller (4) is suitable for controlling the rejection device (3) to reject the corresponding cigarette after receiving the detection result that the cigarette stamp is unqualified.

6. The cigarette steel stamp detection device according to claim 5, characterized in that: It also includes a lighting device (5), and the lighting device (5) is used to provide lighting for the video recording device (1).

7. The cigarette steel stamp detection device according to claim 6, characterized in that: It also includes a pulse sensor (6), wherein the pulse sensor (6) and the lighting device (5) are both communicatively connected to the controller (4); The pulse sensor (6) is suitable for sending a signal to the controller (4) when the cigarette passes through the recording area of ​​the recording device (1), so that the controller (4) controls the recording device (1) to record and simultaneously controls the operation of the lighting device (5).

8. The cigarette steel 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 is used to display an image of the cigarette with an unqualified steel stamp.

9. A cigarette production system, characterized in that: The cigarette steel stamp detection device according to any one of claims 5 to 8 is included, and the cigarette production system further comprises: A conveyor belt for conveying cigarettes, wherein the video recording device (1) is arranged above the conveyor belt; The cigarette printing roller is arranged above the conveyor belt and is used for printing cigarette steel stamps on 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 conveying rollers rotatably arranged on the frame, and the conveying belt is wound around the plurality of conveying rollers.

Images