CN211703516U

CN211703516U - Cigarette appearance quality on-line measuring device that can be anti-interference

Info

Publication number: CN211703516U
Application number: CN201922277330.6U
Authority: CN
Inventors: 阚晖; 杨树青
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-20
Anticipated expiration: 2029-12-18

Abstract

The utility model relates to an anti-interference cigarette appearance quality on-line detection device, which comprises a first detection module, a second detection module, a first transmission drum wheel and a second transmission drum wheel, wherein the first transmission drum wheel is adjacent to the second transmission drum wheel; the second detection module is arranged on the side surface of the second conveying drum wheel and is used for shooting two or more pictures of the other side surface of the same cigarette at different positions, and the two or more pictures have overlapping areas; the first detection module and the second detection module both comprise an outer cover. The beneficial effects are as follows: the detection device can not only identify the interference of spray and sundries, but also effectively remove defective cigarettes.

Description

Cigarette appearance quality on-line measuring device that can be anti-interference

Technical Field

The utility model relates to a cigarette on-line measuring field, in particular to cigarette appearance quality on-line measuring device that can anti-interference.

Background

In the modern cigarette production process, the production speed is faster and faster, the requirements of enterprises on the product quality are stricter and stricter, the quality of the appearance quality of cigarettes influences the selection of consumers to a certain extent, but in the actual production of the cigarettes, due to machine faults, the cigarettes are easy to have bad products such as stains, damaged cigarette paper, penetrated tobacco stems, poor splicing, no printing, printing position deviation, printing ink pollution and the like. Before the machine vision detection technology is used for detecting the appearance of a cigarette, the appearance quality of the cigarette can only be observed manually, and mainly in a spot check mode. The main function of manual sampling inspection is a rough evaluation of the overall quality of the batch of products, which cannot completely explain the detailed quality of the batch of products, and therefore, the manual sampling inspection has a great uncertainty factor. The reaction ability and the inspection state of each person are also different, when the quality of the cigarettes is inspected, the conditions of wrong inspection and missed inspection of the cigarettes sometimes occur, and the cigarettes with quality defects finally reach the hands of consumers after flowing into the next production process. The working method for manually sampling and inspecting the product quality also belongs to an initial quality inspection method, which wastes manpower and material resources, cannot ensure that the product quality is completely inspected, cannot well guarantee the product quality and economic benefit of an enterprise, and is bound to the market competitiveness of the enterprise product.

Based on the development of machine vision technology, some think of taking a picture with the camera to judge whether cigarette outward appearance is defective, in order to replace the technical problem that artifical detection efficiency is low, but the following problem has always existed: 1) when the lens of the camera is attached with impurities, all cigarettes are identified as defective cigarettes, all cigarettes are completely removed, and the tobacco shred ends of the cigarettes are driven by the high-speed rotating drum wheel, so that much droplets and impurities are generated, and the phenomenon cannot be avoided; 2) the inevitable spray exists between the camera lens and the cigarette, and the camera can regard the spray as the cigarette defect, so that the normal cigarette is rejected. For the reasons, the false rejection rate of cigarettes is always high. Therefore, a technical prejudice exists in cigarette factories and equipment suppliers for a long time, namely the problem that the cigarette appearance defects are detected on line by using a camera, the cigarette cannot be actually used on a cigarette making machine, and the problem of high false rejection rate cannot be solved all the time. Therefore, the visual technology is only used for detecting missing cigarette, missing mouth, empty head, reverse cigarette and the like in the cigarette packet in the tobacco field.

Consequently, through a large amount of experimental studies, provide one kind can enough avoid judging normal cigarette mistake to be defective cigarette and can accurately discern a cigarette appearance defect again, the precision rate is high, detection efficiency is high, easy to maintain and the cigarette appearance quality on-line measuring device that can anti droplet, debris are disturbed that overhaul the utility model discloses a create and study motivation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide one kind can enough avoid judging normal cigarette mistake as the defective cigarette can accurate recognition cigarette appearance defect again, the precision rate is high, detection efficiency is high, easy to maintain and the cigarette appearance quality on-line measuring device that can anti droplet, debris are disturbed of maintenance.

The utility model provides a pair of can anti-interference cigarette appearance quality on-line measuring device, its technical scheme is:

an anti-interference cigarette appearance quality online detection device comprises a first detection module, a second detection module, a first transmission drum wheel and a second transmission drum wheel, wherein the first transmission drum wheel is adjacent to the second transmission drum wheel; the second detection module is arranged on the side surface of the second conveying drum wheel and is used for shooting two or more pictures of the other side surface of the same cigarette at different positions, and the two or more pictures have overlapped areas; the first detection module and the second detection module both comprise an outer cover.

Preferably, the included angle between the picture collecting directions of the same side face of the same cigarette is smaller than 75 degrees.

Preferably, the included angle between the picture collecting directions of the same side face of the same cigarette is 3-18 degrees; two pictures shot from the same side of the same cigarette have more than 80% of overlapping area.

Preferably, the first detection module comprises a light source for irradiating cigarettes, a first photographing device for photographing the cigarettes and a second photographing device, and the first photographing device and the second photographing device are arranged in a housing; the second detection module comprises a light source for irradiating the cigarettes, a third photographing device for photographing the cigarettes and a fourth photographing device, and the third photographing device and the fourth photographing device are arranged in a housing; the first photographing device and the second photographing device respectively photograph one side surface of the same cigarette at different positions of the first conveying drum wheel; the third device of shooing with the fourth device of shooing is shot another side of same cigarette respectively at the different positions of second conveying drum wheel.

Preferably, the first device of shooing with the second device of shooing is shot simultaneously two cigarettes that are in on first position and second position simultaneously, the third device of shooing with the fourth device of shooing is shot simultaneously two cigarettes that are in on third position and fourth position simultaneously, once only can shoot the photo of two cigarettes.

Preferably, the first detection module and the second detection module respectively comprise a light source for irradiating cigarettes and a photographing device for photographing the cigarettes; the photographing device of the first detection module photographs one side surface of the same cigarette more than twice at different positions of the first conveying drum wheel; the photographing device of the second detection module photographs the other side face of the same cigarette more than twice at different positions of the second transmission drum wheel.

Preferably, the photographing device is a line CCD camera or an area CCD camera.

Preferably, two LED strip light sources are arranged around the camera.

Preferably, the detection device further comprises an air blowing device, wherein the air blowing device comprises an air outlet and a ventilation pipeline, and the ventilation pipeline is connected into a cavity for installing the detection module;

the first detection module and the second detection module respectively comprise a bracket, and the first detection module and the second detection module are respectively arranged at a gap formed by the conveying drum wheels through the brackets.

The utility model discloses an implement including following technological effect:

the utility model discloses an adopt two detection module to detect two sides of same cigarette, there are two devices of shooing in every detection module, two adjacent very near devices of shooing are successively adopted the picture to same cigarette in different positions in the very short time, because the contained angle between the picture collection direction of two cameras is less than 75 degrees, must exist the part of "coincidence" in two pictures, if there is the droplet between camera and the cigarette, the velocity of motion direction of motion and the cigarette machine of droplet drive the velocity of motion and the direction of cigarette can not be unanimous, so in two pictures that have time difference or space difference, can distinguish droplet and defect through the position change size of picture spot (for example, the picture spot is in the different positions of cigarette, then the deem is the droplet, though all there is the defect on two pictures, but still deem to be normal cigarette). On the other hand, the position of the two cameras is different between the cameras and the cigarette, and the position of the droplets projected on the cigarette also changes (for example, if one picture is dirty, and if one picture is not, the cigarette is identified as the droplets, and although one picture is defective, the cigarette is also identified as the normal cigarette). In addition, if sundries are attached to any one camera lens, one picture has black spots, and the other picture does not have the black spots, and the picture is also determined to be a normal cigarette in the situation. If sundries exist on the two cameras, the black points of the two pictures are different in position, and the two pictures are also considered to be normal cigarettes. Through the technical scheme of the utility model can avoid the false retrieval. That is to say, only the picture of gathering has "coincidence", can discern the cigarette foam dust that the space that the debris or the getting for instance exist on the lens surface through the picture of "coincidence", avoid rejecting the cigarette that does not have appearance defect, reduce the mistake rate of picking to improve the detection precision and the detection rate of device.

Through setting up the air-blowing device, can blow away droplet, debris, reduce the interference, still do benefit to the heat dissipation.

The utility model discloses a detection device detection efficiency is high, and the highest minute can detect 1.2 ten thousand (5 milliseconds/one), and the rejection rate of defect cigarette is high, and the mistake rejection rate is little. The machine vision technology is adopted to realize the online real-time comprehensive detection of the appearance quality of the finished cigarettes and eliminate defective cigarettes in time. The labor intensity of inspectors can be greatly reduced, the product quality is improved, the labor cost and the management cost of a cigarette factory are reduced, and the enterprise image is improved.

Drawings

Fig. 1 is the utility model discloses a can anti-interference cigarette appearance quality on-line measuring device side structure sketch map.

Fig. 2 is the utility model discloses a can anti-interference cigarette appearance quality on-line measuring device stereogram.

Fig. 3 is a schematic diagram of the first photographing device photographing the same cigarette picture at the first position of the first conveying drum.

Fig. 4 is a schematic view of the second photographing device photographing the same cigarette picture at the second position of the first conveying drum.

FIG. 5 is a schematic view of a third photographing apparatus photographing the same cigarette at a third position of the second conveying drum.

Fig. 6 is a schematic view of the fourth photographing device photographing the same cigarette picture at the fourth position of the second conveying drum.

FIG. 7 is a schematic view of the side view of the online inspection device with an air blowing device.

Fig. 8 is a schematic diagram of a picture of the same cigarette taken by the detection device (8A is the same cigarette a side, and 8B is the same cigarette B side).

FIG. 9 is a schematic diagram illustrating the detection of a defect type of a cigarette.

In the figure: 1. a first detection module; 2. a second detection module; 3. a first transfer drum; 4. a second transfer drum; 5. a first position; 6. a second position; 7. a third position; 8. a fourth position; 9. a compressed air generating device; 10. a vent line; 11. the overlapping area; a1, a picture obtained by the first photographing device; a2, a picture obtained by the second photographing device; b1, a photograph obtained by the third photographing device; b2, and the fourth photographing device.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and the accompanying drawings, wherein the described embodiments are only intended to facilitate the understanding of the present invention, and do not limit the present invention in any way.

In the cigarette production process, a large amount of scattered tobacco powder falls and splashes everywhere, which is an unsolved practical problem. When the droplets are between the camera and the cigarette, the droplets or the surface defects of the cigarette cannot be distinguished from each other by looking at one picture. If sundries are attached to the surface of the lens of any one camera, the synthesized picture is fed back to the computer and has defects, the synthesized picture is different from the normal picture and can be judged as unqualified cigarettes by the computer by mistake, and the problem can cause that large batches of qualified cigarettes are judged as unqualified cigarettes until a technician finds the problem and can recover to be normal after cleaning the lens of the camera, and a large quantity of qualified cigarettes are judged as unqualified cigarettes by mistake; not only increases the production cost of enterprises, but also reduces the production efficiency. The cigarette factory is profound to pain.

In view of the above technical problems, the present embodiment provides an anti-interference cigarette appearance quality online detection device, as shown in fig. 1 and fig. 2, including a first detection module 1, a second detection module 2, a first transmission drum 3, and a second transmission drum 4, where the first transmission drum 3 is adjacent to the second transmission drum 4, the first detection module 1 is installed on a side surface of the first transmission drum 3, the first detection module 1 is used to take two or more pictures of one side surface of a same cigarette at different positions, the two or more pictures have an overlapping area 11, the second detection module 2 is installed on a side surface of the second transmission drum 4, the second detection module 2 is used to take two or more pictures of another side surface of the same cigarette at different positions, and the two or more pictures have an overlapping area 11; the first detection module and the second detection module both comprise an outer cover. Preferably, the included angle between the image acquisition directions of the same side of the same cigarette is 75 degrees, 3-18 degrees can be selected, the included angle between the image acquisition directions is limited to be an acute angle, specifically less than 75 degrees, the change of the real cigarette defects in the two images is small, the calibration can be better carried out in the image processing, the change of the cigarette defects is regular after the image acquisition angle is selected, and the change of impurities or cigarette foam is irregular on the contrary; two pictures shot from the same side of the same cigarette have the overlapping area 11 of more than 80 percent.

As an implementation mode of the multi-phase machine detection, the first detection module 1 comprises a light source for irradiating the cigarette, a first photographing device and a second photographing device for photographing the cigarette, and the first photographing device and the second photographing device are arranged in a housing; the second detection module 2 comprises a light source for irradiating the cigarettes, a third photographing device and a fourth photographing device for photographing the cigarettes, and the third photographing device and the fourth photographing device are arranged in a housing; the first photographing device and the second photographing device respectively photograph one side surface of the same cigarette at different positions of the first conveying drum wheel 3; the third photographing device and the fourth photographing device respectively photograph the other side surface of the same cigarette at different positions of the second conveying drum wheel 4. In fig. 8, fig. 8A is two pictures of a surface a of the same cigarette, a1 is a picture obtained by a first photographing device, a2 is a picture obtained by a second photographing device, the two pictures have a coincidence area 11 after being combined, the coincidence area 11 can be used for identifying the interference of smoke dust and impurities, and the two pictures can also obtain the cigarette pictures as complete as possible to find out the defective cigarette; fig. 8B is two pictures of the B surface of the same cigarette, B1 is a picture obtained by the first photographing device, B2 is a picture obtained by the second photographing device, the two pictures have a coincidence area 11 after being combined, the interference of the cigarette foam and the impurities can be identified by utilizing the coincidence area 11, and the two pictures can also obtain the cigarette pictures which are as complete as possible to find out the defective cigarette.

As a detection implementation mode of two-time imaging of a single camera, the first detection module 1 and the second detection module 2 respectively comprise a light source for irradiating cigarettes and a photographing device for photographing the cigarettes; the photographing device of the first detection module 1 photographs more than two times one side surface of the same cigarette at different positions of the first conveying drum wheel 3; the photographing device of the second detection module 2 photographs the other side surface of the same cigarette more than twice at different positions of the second transmission drum wheel 4.

Specifically, referring to fig. 7, the detection device further includes an air blowing device, the air blowing device includes an air outlet and an air duct 10, the air outlet is connected to the compressed air generation device 9 through the air duct 10, the air duct 10 is connected to a cavity in which the detection module is installed, when a cigarette photo is taken, external compressed air is introduced into the detection cavity, positive pressure is formed in the cavity, and external dust and smoke can not enter the detection cavity; compressed air blows out through the gas outlet, blows away cigarette foam, debris on the device surface of shooing, reduces the interference to do benefit to the heat dissipation. The first detection module and the second detection module comprise brackets, the first detection module and the second detection module are respectively arranged at the gap formed by the conveying drums through the brackets, and the plurality of conveying drums on the cigarette making machine are arranged on the drum mounting plate.

The reason for limiting to shoot at different positions is that the cigarette is shot twice by using two cameras at the same position, if the cigarette foam is close to the cigarette, the black point pictures of the cigarette foam on the pictures shot at the same position are also close, so that the defect is considered to be mistakenly removed, but if the pictures are shot at different positions, when the cigarette is turned to the other position, the cigarette foam cannot fly to the upper part of the cigarette at the other position synchronously, so that a picture with the black point and a picture without the black point can be obtained, the cigarette foam can be well identified, and the false detection when the cigarette foam is close to the cigarette is avoided.

Specifically, the photographing device selects a linear array CCD camera or an area array CCD camera. The linear array CCD camera is optimized, the detected object is a cigarette on a drum wheel, the detected visual field is in a long and thin strip shape, the cigarette rotates on the detection drum at a high speed, the cigarette can be approximately considered to move in parallel at a high speed (the tangential direction) relative to the visual field of the camera, the linear array camera can acquire a complete and clear cigarette surface development picture, the edge imaging effect of the cigarette of the linear array camera is superior to that of an area array mode, the linear array cameras with high frequency acquisition speed are relatively more, and the type selection of devices is easy. Two LED strip light sources are arranged around the camera. Two LED light sources are adopted, 5 pixels can be thinned to the state that the line-carving width is 0.1mm, imaging meets the requirement, and a certain speed-up space is provided. The LED strip light source is easy to install and high in brightness; the heat dissipation is good: the luminous body of the linear light source is generally a high-power LED, when the linear light source works, a large current passes through an LED chip junction to enable the LED chip junction to emit light, and meanwhile, as only 10% -15% of input power is converted into light energy to be output, high heat cannot be generated. The uniformity is good: the selected light source adopts a condensing lens to increase the illumination intensity, controls the width of the light beam in a reasonable range, and well balances the convenience of installation and the deviation of the position of the light beam caused by external vibration. The quality of the pictures collected by the linear array CCD depends on the uniformity of the linear light source in the one-dimensional direction to a great extent, meanwhile, the influence of vibration on the light beam in the working process is considered, the requirement on the uniformity from the center to the edge of the light beam is also high, and the quality of the collected pictures cannot be greatly influenced due to the small deviation of the position of the light source.

Referring to fig. 1 and 2, in the embodiment, an anti-interference cigarette appearance quality online detection method is provided, in which a first detection module 1 is installed on a side surface of a first transmission drum 3, a second detection module 2 is installed on a side surface of a second transmission drum 4, the first transmission drum 3 is adjacent to the second transmission drum 4, and since it is a cigarette opposite surface that the cigarette is adsorbed by transferring the cigarette between the two transmission drums, the detection modules are arranged on two side surfaces of the adjacent transmission drums to photograph the cigarette on the adjacent drums, so that a whole cigarette picture can be obtained, and a first photographing device and a second photographing device are arranged inside the first detection module 1 and are used for photographing a picture on one side surface of the same cigarette; a third photographing device and a fourth photographing device are arranged in the second detection module 2 and are used for photographing pictures on the other side face of the same cigarette, the cigarettes are adsorbed on the adsorption grooves of the conveying drum wheel, and the rotation of the conveying drum wheel drives the cigarettes on the adsorption grooves to move in sequence;

specifically, as shown in fig. 3 to 6, the method includes the following steps: the method comprises the following steps that a first photographing device shoots a picture (shown in figure 3) of one side face of a cigarette at a first position 5 of a first transmission drum wheel 3, a second photographing device shoots a picture (shown in figure 4) of one side face of the same cigarette at a second position 6 of the first transmission drum wheel 3, the two pictures shot by the first photographing device and the second photographing device have a superposition area 11 (shown in figure 8), the two pictures are comprehensively judged and identified to determine whether one side face of the cigarette is a real defect, and if the side face of the cigarette is the real defect, a removing signal is sent to remove the defective cigarette at a removing opening; the third photographing device photographs a picture (shown in figure 5) of the other side face of the cigarette at a third position 7 of the second conveying drum wheel 4, the fourth photographing device photographs a picture (shown in figure 6) of the other side face of the cigarette at a fourth position 8 of the second conveying drum wheel 4, the two pictures photographed by the first photographing device and the second photographing device have a coincidence area 11, the two pictures are comprehensively judged and identified whether the other side face of the cigarette is a real defect, and if the other side face of the cigarette is a defect, a rejecting signal is sent to reject the defective cigarette at a rejecting opening. The detection method can not only identify the interference of spray and sundries, but also effectively remove defective cigarettes.

Preferably, in order to improve the shooting efficiency, the first shooting device and the second shooting device shoot the two cigarettes at the first position 5 and the second position 6 at the same time, the third shooting device and the fourth shooting device shoot the two cigarettes at the third position 7 and the fourth position 8 at the same time (as shown in fig. 1), and the photos of the two cigarettes can be shot at one time.

In order to blow away the droplets and the impurities, as another embodiment, referring to fig. 7, while taking a picture of the cigarette, external compressed air is introduced into the detection cavity to blow away the droplets and the impurities and facilitate heat dissipation.

In order to realize better detection of cigarette defects and effectively identify interference, an included angle between the picture acquisition directions of the first photographing device and the second photographing device is less than 75 degrees; and the included angle between the image acquisition directions of the third photographing device and the fourth photographing device is less than 75 degrees. Furthermore, an included angle between the picture collecting directions of the first photographing device and the second photographing device is 3-60 degrees; the included angle between the image collecting directions of the third photographing device and the fourth photographing device is 3-60 degrees. Furthermore, the included angle between the picture collecting directions of the first photographing device and the second photographing device is 3-18 degrees; and an included angle between the image acquisition directions of the third photographing device and the fourth photographing device is 3-18 degrees. The included angle between the picture collecting directions of the first photographing device and the second photographing device is 22-70 degrees; the included angle between the image acquisition directions of the third photographing device and the fourth photographing device is 22-70 degrees.

The two pictures shot by the first shooting device and the second shooting device have a coincidence area 11 of more than 80 percent; the two pictures shot by the third shooting device and the fourth shooting device have the overlapping area 11 of more than 80 percent. Further, two pictures shot by the first shooting device and the second shooting device have a superposition area 11 of more than 90%; the two pictures shot by the third shooting device and the fourth shooting device have the overlapping area 11 of more than 90 percent. Furthermore, the two pictures shot by the first shooting device and the second shooting device have the superposition area 11 of more than 95%; the two pictures shot by the third shooting device and the fourth shooting device have the overlapping area 11 of more than 95%.

The utility model discloses in, through the contained angle between the limited picture collection direction, except that can discern debris and cigarette foam through the cigarette picture of the 11 within ranges of coincidence area of comparison two pictures, still have following technological effect: the installation space on the cigarette making machine set mouth connecting machine is very limited, and the camera with a small angle is convenient to install; can also obtain enough full cigarette pictures so as to be convenient for removing defective cigarettes.

Referring to fig. 9, the on-line detection device of the embodiment can effectively detect one or all of filter tip white leakage, tipping paper doubling, filter tip bubble wrinkle, filter tip foam, cigarette rod tooth staggering, tipping paper length, cigarette rod puncture, cigarette rod spot (foam clipping), cigarette rod stain or cigarette length.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a can anti-interference a cigarette appearance quality on-line measuring device, includes first detection module, second detection module, first transmission drum and second transmission drum, its characterized in that: the first conveying drum wheel is adjacent to the second conveying drum wheel, the first detection module is arranged on the side face of the first conveying drum wheel and used for shooting two or more pictures of one side face of the same cigarette at different positions, and the two or more pictures have overlapping areas; the second detection module is installed the side of second conveying drum wheel, the second detection module is used for shooting two or more photos to another side of same cigarette in different positions, and two or more photos have coincidence area.

2. The anti-interference cigarette appearance quality online detection device according to claim 1, characterized in that: the included angle between the picture collecting directions of the same side face of the same cigarette is smaller than 75 degrees.

3. The anti-interference cigarette appearance quality online detection device according to claim 2, characterized in that: the included angle between the picture collecting directions of the same side surface of the same cigarette is 3-18 degrees; two pictures shot from the same side of the same cigarette have more than 80% of overlapping area.

4. The anti-interference cigarette appearance quality online detection device according to claim 1, characterized in that: the first detection module comprises a light source for irradiating cigarettes, a first photographing device and a second photographing device for photographing the cigarettes, and the first photographing device and the second photographing device are arranged in a housing; the second detection module comprises a light source for irradiating the cigarettes, a third photographing device for photographing the cigarettes and a fourth photographing device, and the third photographing device and the fourth photographing device are arranged in a housing; the first photographing device and the second photographing device respectively photograph one side surface of the same cigarette at different positions of the first conveying drum wheel; the third device of shooing with the fourth device of shooing is shot another side of same cigarette respectively at the different positions of second conveying drum wheel.

5. The anti-interference cigarette appearance quality online detection device according to claim 4, characterized in that: the first device of shooing with the second device of shooing is shot simultaneously two cigarettes that are in on first position and second position simultaneously, the third device of shooing with the fourth device of shooing is shot simultaneously two cigarettes that are in on third position and fourth position simultaneously, once only can shoot the photo of two cigarettes.

6. The anti-interference cigarette appearance quality online detection device according to claim 1, characterized in that: the first detection module and the second detection module respectively comprise a light source for irradiating cigarettes and a photographing device for photographing the cigarettes; the photographing device of the first detection module photographs one side surface of the same cigarette more than twice at different positions of the first conveying drum wheel; the photographing device of the second detection module photographs the other side face of the same cigarette more than twice at different positions of the second transmission drum wheel.

7. The anti-interference cigarette appearance quality online detection device according to claim 1, characterized in that: the photographing device is a linear array CCD camera or an area array CCD camera.

8. The anti-interference cigarette appearance quality online detection device according to claim 7, characterized in that: two LED strip light sources are arranged around the camera.

9. The cigarette appearance quality online detection device capable of resisting interference according to any one of claims 1 to 8, characterized in that: the detection device further comprises an air blowing device, the air blowing device comprises an air outlet and a ventilation pipeline, and the ventilation pipeline is connected to a cavity for mounting the detection module;