Tobacco rolling system and tobacco rolling method

Abstract

The invention relates to a tobacco rolling system and a tobacco rolling method. The tobacco rolling system comprises a conveying assembly, a rolling assembly, a first air blowing assembly, an imaging assembly and a control assembly. The beating roller assembly comprises a tearing area, an inlet and an outlet, the inlet and the outlet are both communicated with the tearing area, and the beating roller assembly is used for tearing tobacco in the tearing area. The first air blowing assembly is provided with a first air channel, a first feeding port and a light transmitting part. The conveying assembly is used for conveying the tobaccos in the tearing area to the first air duct along a first conveying path. The imaging assembly is arranged opposite to the light-transmitting part and used for obtaining a tobacco image in the first air duct through the light-transmitting part. The conveying assembly, the beating roller assembly, the first air blowing assembly and the imaging assembly are all in communication connection with the control assembly. The control assembly is used for obtaining physical parameters of the tobacco according to the tobacco image and controlling the rotating speed of the beating roller assembly according to the physical parameters. The tobacco rolling system is beneficial to improving the tobacco quality in the tobacco crushing process.

Description

Technical Field

[0001] This application relates to the field of tobacco beating technology, and in particular to tobacco beating systems and methods. Background Technology

[0002] Currently, the production of tobacco shreds mostly adopts the following method: tobacco sheets enter the tobacco processing line and undergo processes such as opening and slicing, loosening and rehydrating, feeding, cutting, drying, and air sorting. Because different production errors can easily occur at each stage, the distribution of tobacco shred length on the processing line can be uneven. In particular, the presence of excessively long tobacco shreds and clumps of tobacco can significantly affect cigarette weight, weight distribution, draw resistance, and ventilation rate, thereby greatly impacting cigarette quality.

[0003] In related technologies, many manufacturers use methods such as tearing, cutting, and shredding to adjust the length of tobacco shreds in order to reduce the proportion of excessively long tobacco shreds and tobacco clumps. However, this adjustment method mostly relies on manual judgment to determine the frequency and force of tearing, cutting, and shredding operations, which can easily lead to increased tobacco fragmentation and is detrimental to the quality of cigarettes. Summary of the Invention

[0004] Therefore, it is necessary to provide a tobacco rolling system and a tobacco rolling method to address the issue of how to improve the quality of tobacco during the tobacco shredding process.

[0005] A tobacco beating system, the tobacco beating system comprising:

[0006] A beating roller assembly, comprising a tearing area, an inlet, and an outlet, wherein the inlet and the outlet are both connected to the tearing area, and the beating roller assembly is used to tear tobacco within the tearing area;

[0007] A first blower assembly is provided with a first air duct, a first feed inlet and a light-transmitting part; the first feed inlet is connected to the first air duct and the light-transmitting part is positioned corresponding to the first air duct.

[0008] A conveying assembly includes a first conveying path, the conveying assembly being used to convey tobacco within the tearing area to the first air duct along the first conveying path;

[0009] An imaging component; the imaging component is disposed opposite to the light-transmitting part and is used to acquire an image of tobacco in the first air duct through the light-transmitting part;

[0010] The control component is communicatively connected to the conveying component, the beating roller component, the first blower component, and the imaging component. The control component is used to acquire the physical parameters of the tobacco based on the tobacco image and control the rotation speed of the beating roller component based on the physical parameters.

[0011] A method for beating tobacco with a roller, the method comprising:

[0012] When the first blower assembly is working, a tobacco image is obtained through the light-transmitting part of the first blower assembly in the first air duct of the first blower assembly;

[0013] The physical parameters of the tobacco are obtained from the tobacco image;

[0014] The rotation speed of the beating roller assembly is controlled according to the physical parameters so that the physical parameters of the tobacco after being torn by the beating roller assembly are within a preset range.

[0015] In the aforementioned tobacco beating system and method, tobacco is transported along a first conveying path to the inlet of the beating assembly via a conveying component. The beating assembly, through its rotation, tears the tobacco within a tearing area, achieving a certain degree of looseness. The torn tobacco then enters a first air duct through an outlet, where a blower component disperses the tobacco, ensuring it is evenly distributed across the area containing the light-transmitting section. An imaging component is positioned opposite the light-transmitting section, enabling it to acquire an image of the tobacco as it passes through the first air duct.

[0016] Furthermore, the imaging and control components enable automated monitoring and precise control of the tobacco tearing process. Physical parameters can reflect the tearing state of the tobacco, and dynamic adjustments can be made based on the degree of tearing reflected by the physical parameters. This reduces human intervention, avoids over-tearning or under-tearning of the tobacco, and improves the production efficiency and stability of tobacco product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a tobacco beating roller system shown in one embodiment.

[0018] Figure 2 This is a schematic diagram showing the electrical connection between the control component and other components in a tobacco beating system as illustrated in one embodiment.

[0019] Figure 3 This is a schematic diagram of the cooperative structure of the first blower assembly and the second blower assembly in a tobacco beating roller system shown in one embodiment.

[0020] Figure 4 This is a schematic diagram of the arrangement of the first conveying path and the second conveying path in a tobacco beating system shown in one embodiment.

[0021] Figure 5 This is a schematic diagram of the cooperation structure between the screen assembly and the beating roller assembly in a tobacco beating roller system shown in one embodiment.

[0022] Figure 6 This is a schematic diagram of the cooperative structure of the first blower assembly and the second blower assembly in a tobacco beating roller system shown in another embodiment.

[0023] Figure 7 This is a schematic diagram of the coordination process of a tobacco beating method performed by a tobacco beating system in one embodiment.

[0024] Figure 8 for Figure 7 The diagram shows the combined process of steps S200, S300, S400, and S500 in the tobacco rolling method of one embodiment.

[0025] Figure 9 for Figure 7 The diagram shows the combined process of steps S200, S300, S400 and S500 in the tobacco rolling method in another embodiment.

[0026] Figure 10 This is a schematic diagram of the coordinated process of steps S300, S400 and S500 in the tobacco beating method shown in one embodiment.

[0027] Figure 11 This is a schematic diagram of the coordinated process of steps S520, S600 and S700 in the tobacco beating method shown in one embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Tobacco beating roller system; 110. Conveying assembly; 111. First conveying path; 112. Second conveying path; 113. Third conveying path; 114. Fourth conveying path; 120. Beating roller assembly; 121. Beating roller body; 130. First blower assembly; 130a. First air duct; 1301. First feed inlet; 1302. First discharge outlet; 1303. Third discharge outlet; 1304. Second feed inlet; 131 132. First blower component; 140. First housing assembly; 150. Imaging assembly; 160. Control assembly; 161. Second blower assembly; 160a. Second air duct; 160b. Second discharge port; 162. Second blower component; 170. Second housing assembly; 171. Screen assembly; 172. Screen body; 173. First rotating component; 180. Negative pressure assembly; X, first direction; Y, second direction. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] See Figure 1 as well as Figure 2 , Figure 1 A top view of a tobacco finishing system according to an embodiment of this application is shown. The tobacco finishing system provided in an embodiment of this application includes a conveying assembly 110, a roller assembly 120, a first blower assembly 130, an imaging assembly 140, and a control assembly 150.

[0032] The beating roller assembly 120 includes a tearing area, an inlet, and an outlet, both of which are connected to the tearing area. The beating roller assembly 120 is used to tear tobacco within the tearing area. The conveying assembly 110 is used to carry and transport the tobacco. Figure 3 as well as Figure 4 As shown, the first blower assembly 130 is provided with a first air duct 130a and a first feed inlet 1301. The first feed inlet 1301 is connected to the first air duct 130a.

[0033] The conveying assembly 110 includes a first conveying path 111. The conveying assembly 110 is used to convey tobacco within the tearing area to a first air duct 130a along the first conveying path 111. The imaging assembly 140 is disposed opposite to the light-transmitting portion of the first blower assembly 130 to acquire an image of the tobacco within the first air duct 130a corresponding to the light-transmitting portion.

[0034] See you later Figure 2 The conveying assembly 110, the beating roller assembly 120, the first blower assembly 130, and the imaging assembly 140 are all communicatively connected to the control assembly 150. The control assembly 150 is used to drive the conveying assembly 110, the beating roller assembly 120, the first blower assembly 130, and the imaging assembly 140. The control assembly 150 is used to acquire the physical parameters of the tobacco based on the tobacco image and control the rotational speed of the beating roller assembly 120 based on the physical parameters.

[0035] Understandably, tobacco is transported via conveyor assembly 110 along the first conveyor path 111 to the inlet of the beating roller assembly 120. The beating roller assembly 120, through its own rotation, tears the tobacco within the tearing area, achieving a certain degree of looseness. The torn tobacco enters the first air duct 130a through the outlet, where a blower assembly disperses the tobacco, ensuring it is evenly distributed across the area containing the light-transmitting section. The imaging assembly 140 is positioned opposite the light-transmitting section and can acquire an image of the tobacco as it passes through the first air duct 130a.

[0036] Furthermore, the imaging component 140 and the control component 150 enable automated monitoring and precise control of the tobacco tearing process. The physical parameters can reflect the tearing state of the tobacco. At this time, the degree of tearing of the tobacco can be dynamically adjusted according to the physical parameters, reducing manual intervention, avoiding over-tearing or under-tearing of the tobacco, and improving the production efficiency and stability of tobacco product quality.

[0037] In conjunction with any embodiment of the first blower assembly 130 described above, such as Figure 3 As shown, the first blower assembly 130 includes a first blower element 131 and a first housing assembly 132. The first housing assembly 132 has a first air duct 130a extending along a first direction X. The first blower element 131 is connected to the first housing assembly 132 and is used to blow air into the first air duct 130a. The bottom of the first housing assembly 132 has a first discharge port 1302. The first discharge port 1302 communicates with the first air duct 130a. The first direction X refers to the direction from the bottom to the top of the first housing assembly 132.

[0038] Understandably, the first blower assembly 130 can further disperse and organize the tobacco through its blowing action. When the first air duct 130a has an airflow along the first direction X, heavier tobacco shreds, such as stems and other impurities, tend to accumulate at the bottom of the first housing assembly 132 due to their greater weight. At this point, the heavier tobacco shreds, such as stems and other impurities, can be discharged through the second discharge port 160b. In this way, a primary air-classification and purification process for the tobacco shreds can be achieved directly within the first blower assembly 130, improving the quality of the tobacco shreds produced.

[0039] Furthermore, in some embodiments, see back Figure 3The tobacco threshing system 100 also includes a second blower assembly 160, which includes a second blower element 161 and a second housing assembly 162. The second housing assembly 162 has a second air duct 160a and a second discharge port 160b along a second direction Y. A first blower element 131 is connected to the second housing assembly 162 and is used to blow air into the second air duct 160a. The second discharge port 160b is located at the top of the second housing assembly 162. The first discharge port 130b communicates with the second air duct 160a, allowing tobacco from the first air duct 130a to be input into the second air duct 160a so that the tobacco can be discharged from the second discharge port 160b. The second direction Y refers to the direction from the bottom to the top of the second housing assembly 162.

[0040] It is understandable that heavier tobacco shreds, such as stems, discharged through the second discharge port 160b can enter the second air duct 160a through the first discharge port 1302. In the second air duct 160a, the tobacco is further dispersed, allowing some tobacco clumps to be further broken down into normal tobacco shreds. These normal tobacco shreds, driven by the second air duct 160a, can be discharged through the second discharge port 160b, while impurities such as stems remain at the bottom of the second housing assembly 162. In other words, secondary air separation can be achieved through the second blower assembly 160, discharging normal tobacco shreds from the second discharge port 160b. This facilitates the recovery of normal tobacco shreds, reduces their loss, and improves the quality of tobacco products.

[0041] Optionally, in one embodiment, both the first direction X and the second direction Y are inclined or parallel to the direction of gravity, and neither the first direction X nor the second direction Y is parallel to the direction of gravity. In this way, the screening accuracy for abnormal tobacco shreds, such as clumps of tobacco or excessively long tobacco shreds, can be increased by the effect of gravity, thereby improving the separation quality between normal and abnormal tobacco shreds, and consequently improving the production quality of tobacco shreds.

[0042] Furthermore, in other embodiments, when the first blower 131 is driven, the wind speed within the first air duct 130a is a first wind speed. When the second blower 161 is driven, the wind speed within the second air duct 160a is a second wind speed. The first wind speed is less than the second wind speed. This setting, where the second wind speed is greater than the first wind speed, allows the second air duct 160a, with its higher wind speed, to effectively disperse the tobacco shreds, thereby achieving full recovery of normal tobacco shreds and greatly reducing the loss of normal tobacco shreds.

[0043] In conjunction with any embodiment of the tobacco beating system 100 described above, in conjunction with Figure 3 , Figure 4 as well as Figure 5As shown, the tobacco beating system 100 also includes a screen assembly 170, and the conveying assembly 110 further includes a second conveying path 112. The screen is used to filter tobacco. Tobacco that can pass through the screen holes of the screen assembly 170 is conveyed to the first air duct 130a via the second conveying path 112. Tobacco that does not pass through the screen holes is conveyed to the inlet via the first conveying path 111.

[0044] Understandably, the screen assembly 170 is designed to assist in pre-screening normal tobacco shreds. Specifically, when normal tobacco shreds, tobacco clumps, and excessively long tobacco shreds are all on the screen assembly 170, the normal tobacco shreds can pass through the screen holes on the screen assembly 170 and enter the second conveying path 112, which then conveys them to the first air duct 130a for direct tobacco shred detection. Meanwhile, tobacco clumps and excessively long tobacco shreds that have not passed through the screen holes enter the first conveying path 111 and are conveyed to the roller assembly 120 for tearing. This prevents the normal tobacco shreds from being excessively torn by the roller assembly 120, thus affecting the quality of the tobacco shreds.

[0045] In one implementation, such as Figure 4 As shown, the screen assembly 170 is inclined so that the tobacco in the screen assembly 170 can enter the beater assembly 120 by gravity. In another embodiment, as... Figure 5 As shown, the screen assembly 170 includes a screen body 171, a first rotating member 172, a second rotating member 173, and a motor. The motor drives the first rotating member 172 to rotate. The screen assembly 170 is wound between the first rotating member 172 and the second rotating member 173, so that the screen assembly 170 and the second rotating member 173 rotate synchronously, thereby allowing the tobacco in the screen assembly 170 to be driven to slide into the beater roller assembly 120.

[0046] Alternatively, in some implementations, see back Figure 3 The first housing assembly 132 has a third discharge port 1303 at its top. The third discharge port 1303 is connected to the first air duct 130a. In one embodiment, the third discharge port 1303 is located at the top of the first housing assembly 132. Thus, when the first air duct 130a has airflow, normal tobacco can be directly discharged from the outside of the first air duct 130a through the third discharge port 1303. In another embodiment, the distance from the third discharge port 1303 to the top of the first housing assembly 132 is less than the distance from the third discharge port 1303 to the bottom of the first housing assembly 132. The tobacco beating system 100 also includes a negative pressure assembly 180. The negative pressure assembly 180 has a negative pressure air duct. The negative pressure air duct is connected to the first air duct 130a through the third discharge port 1303.

[0047] Alternatively, in one embodiment, the first blower assembly 130 may further include an airlock. The airlock is disposed at the third discharge port 1303.

[0048] When the first air duct 130a generates airflow along the first direction X of the first housing assembly 132, the airlock is in the open state, allowing the first air duct 130a to communicate with the outside through the third discharge port 1303. When the first air duct 130a does not generate airflow along the first direction X of the first housing assembly 132, the airlock is in the closed state, sealing the third discharge port 1303.

[0049] Thus, when there is airflow along the first direction X within the first air duct 130a, the airlock is in the open state, allowing the first air duct 130a to connect with the outside through the third discharge port 1303, enabling normal tobacco to be discharged smoothly. When there is no airflow along the first direction X within the first air duct 130a, the airlock is in the closed state, sealing the third discharge port 1303. This helps prevent outside air from entering the first air duct 130a, maintaining the system's airtightness and preventing dust and other impurities from entering the system.

[0050] Furthermore, in conjunction with the aforementioned embodiment of the second blower assembly 160, the tobacco beating system 100 can achieve simultaneous tobacco detection and tobacco production. Specifically, after passing through the beating assembly 120, the tobacco enters the first beating assembly 120. Normal tobacco shreds in the first air duct 130a can be discharged through the third discharge port 1303, while abnormally heavy tobacco shreds sequentially enter the second air duct 160a through the first discharge port 1302 and the fifth conveying path for secondary air separation. Normal tobacco shreds in the second air duct 160a can be discharged through the second discharge port 160b, thus achieving simultaneous screening and detection of normal tobacco shreds. This enriches the functionality of the tobacco beating system 100 without introducing excessive structures, which helps reduce the setup cost of the tobacco beating system 100.

[0051] In conjunction with any embodiment of the roller assembly 120 described above, such as Figure 4 as well as Figure 5 As shown, the beating roller assembly 120 includes a motor, a bearing assembly, and a beating roller body 121. The outer wall of the beating roller body 121 is provided with nail-shaped portions. These nail-shaped portions can be any of the following: nail-shaped, blade-shaped, or tooth-shaped. Furthermore, the nail-shaped portions can be arranged spirally or in a matrix. The motor is connected to the beating roller body 121 via the bearing assembly, causing the motor to drive the bearing assembly and the beating roller body 121 to rotate synchronously, so that the nail-shaped portions can tear the tobacco to form tobacco shreds.

[0052] It should be noted that the conveying component 110 can be a conveyor belt, chain conveyor, etc., or it can be a shuttle vehicle (RGV), AGV, etc.

[0053] In one embodiment, the conveying assembly 110 includes a motor, a first rolling element, a transmission belt, and a second rolling element. The motor is driven to the first rolling element to drive it to rotate. The transmission belt is driven between the first and second rolling elements, causing the first rolling element to drive the transmission belt and the second rolling element to rotate. In one example, the first conveying path 111, the fifth conveying path, and the second conveying path 112 in the above embodiment can be implemented by having multiple spaced conveying segments on the transmission belt. One conveying segment corresponds to a different conveying path. In another example, the first conveying path 111, the fifth conveying path, and the second conveying path 112 in the above embodiment can be implemented by having multiple conveying assemblies 110. Specifically, each conveying assembly 110 corresponds to a conveying path via a corresponding conveying belt.

[0054] It should be noted that the first blower 131 and the second blower 161 in the above embodiments can be, but are not limited to, fans, hair dryers, etc., and no further restrictions are imposed here.

[0055] The aforementioned tobacco finishing system can be used to perform the following tobacco finishing methods, such as... Figure 7 As shown, specifically, tobacco finishing methods include:

[0056] S100: When the first blower assembly 130 is working, a tobacco image is obtained through the light-transmitting part of the first blower assembly 130 within the first air duct 130a of the first blower assembly 130.

[0057] S200. Obtain the physical parameters of the tobacco based on the tobacco image.

[0058] The physical parameters can be, but are not limited to, the density, area, length, and width of the tobacco, which will be explained in detail later.

[0059] S300: Control the rotation speed of the beating roller assembly 120 according to physical parameters so that the physical parameters of the tobacco after being torn by the beating roller assembly 120 are within a preset range.

[0060] Thus, the imaging component 140 and control component 150 enable automated monitoring and precise control of the tobacco tearing process. The degree of tobacco tearing can be dynamically adjusted based on real-time image data, reducing manual intervention, avoiding over- or under-tearing of tobacco, and improving tobacco production efficiency and the stability of tobacco product quality.

[0061] Furthermore, by precisely controlling the rotation speed of the beating roller assembly 120 through the physical parameters in the tobacco image, appropriate tearing can be performed according to the actual state of the tobacco, avoiding over-tearing or under-tearing, which helps to maintain the integrity of the tobacco, reduce the generation of dust, and thus improve the quality of the tobacco.

[0062] In some embodiments, such as Figure 8 shown, step S300 in the above embodiments includes:

[0063] S310. Determine whether the physical parameters obtained in the step of obtaining the physical parameters of the tobacco according to the tobacco image are greater than the preset range.

[0064] Let the physical parameters obtained in the step of obtaining the physical parameters of the tobacco according to the tobacco image be Xt. The physical parameters of the tobacco after being torn by the beating roller assembly are X'. Let the preset range be (a, b). Where a < b.

[0065] That is, step S310. Determine whether there is Xt > b.

[0066] When Xt > b, execute step S400. Control the beating roller assembly 120 to increase the current rotation speed until X' ∈ [a, b].

[0067] When Xt ≤ b, execute step S500. Determine whether there is Xt ∈ [a, b].

[0068] When Xt ∈ [a, b], control the beating roller assembly 120 to maintain the current rotation speed.

[0069] When Xt < a, control the beating roller assembly 120 to decrease the current rotation speed until X' ∈ [a, b].

[0070] Among them, the control component 150 determines whether the physical parameters are greater than the preset range. If the physical parameters are greater than the preset range, it means that the tearing degree of the tobacco is insufficient, and the rotation speed of the beating roller assembly 120 needs to be increased to the first rotation speed to further tear the tobacco until the physical parameters are within the preset range.

[0071] If the physical parameters are less than or equal to the preset range, further determine whether they are within the preset range. If the physical parameters are within the preset range, it means that the current tearing degree is appropriate, and the current rotation speed can be maintained. If the physical parameters are less than or equal to the second value, it means that the tobacco is torn excessively, and the rotation speed of the beating roller assembly 120 needs to be decreased to the second rotation speed to reduce the tearing degree until the physical parameters are within the preset range.

[0072] In some embodiments, such as Figure 9 shown, the above step S200 and step S300 include:

[0073] The physical parameters include length parameters. The preset range includes a preset length range.

[0074] S210. Obtain the set of edge contour points of the tobacco in the tobacco image.

[0075] Among them, this step can extract the set of edge contour points of tobacco from the tobacco image through an image processing algorithm, such as an edge detection algorithm. Specifically, in one example, the edge detection algorithm can be the Canny operator detection method, the Sobel operator detection method, etc.

[0076] S220. Obtain an approximate curve of the tobacco according to the set of edge contour points.

[0077] Specifically, in one example, in this step, it can be taken: according to the extracted set of edge contour points, use a mathematical fitting method (such as Bezier curve fitting, polynomial fitting, etc.) to generate an approximate curve of the tobacco. In this way, it is beneficial to accurately reflect the shape characteristics of the tobacco.

[0078] S230. Obtain the length parameter of the approximate curve.

[0079] Specifically, this step can calculate the arc length of the curve by methods such as numerical integration.

[0080] S311. Judge whether the length parameter obtained in the step of obtaining the physical parameters of the tobacco according to the tobacco image is greater than the preset length range.

[0081] Let the length parameter obtained in the step of obtaining the physical parameters of the tobacco according to the tobacco image be Lt. The physical parameter of the tobacco after being torn by the beating roller assembly is L'. Then let the preset range be [a1, b1], where a1 < b1.

[0082] That is, in step S11, judge whether there is Lt > b1.

[0083] It can be understood that when the cut tobacco is too long or a cut tobacco mass appears, its length parameter will be greater than the normal cut tobacco size. Therefore, the length parameter can be used as a judgment index for judging whether there is too long cut tobacco or for judging whether there is a cut tobacco mass.

[0084] When Lt > b1, then execute step S410. Control the beating roller assembly 120 to increase the current rotation speed until L' ∈ [a1, b1].

[0085] When Lt ≤ b1, then execute step S510. Judge whether there is Lt ∈ [a1, b1].

[0086] When Lt ∈ [a1, b1], then control the beating roller assembly 120 to maintain the current rotation speed;

[0087] When Lt < a1, then control the beating roller assembly 120 to reduce the current rotation speed until L' ∈ [a1, b1].

[0088] Understandably, by extracting the set of edge contour points of the tobacco and generating an approximate curve, the length parameters of the tobacco can be obtained more accurately, thus accurately reflecting the actual size of the tobacco and achieving more precise tearing control. Furthermore, by dynamically adjusting the rotation speed of the beating roller assembly 120, it is ensured that the length parameters of the tobacco are always within the preset length range, which helps to improve the quality consistency of tobacco products and reduce quality problems caused by inconsistent dimensions.

[0089] In other embodiments, such as Figure 10 As shown, steps S200 and S300 may further include:

[0090] Physical parameters include the number of tobacco clumps. Preset ranges include preset number ranges.

[0091] S210. Obtain the set of edge contour points of tobacco within the tobacco image.

[0092] Similarly, this step can be achieved by using image processing algorithms, such as edge detection algorithms, to extract the set of edge contour points of the tobacco from the tobacco image. Specifically, in one example, the edge detection algorithm could be the Canny operator detection method, the Sobel operator detection method, etc.

[0093] S220. Obtain the approximate curve of the tobacco based on the set of edge contour points.

[0094] Accordingly, specifically, in one example, this step can involve generating an approximate curve of the tobacco using mathematical fitting methods (such as Bézier curve fitting, polynomial fitting, etc.) based on the extracted set of edge contour points. This helps to accurately reflect the shape characteristics of the tobacco.

[0095] S240. Obtain the area parameter of the approximate curve.

[0096] S312. Determine if the area parameter is greater than the preset area threshold. That is, let the area parameter be Sn and the preset area threshold be S0, then determine if Sn>S0.

[0097] It is understandable that when tobacco shreds are too long or when tobacco clumps appear, their area parameters will be larger than the normal size of tobacco shreds. Therefore, the area parameter can be used as an indicator to determine whether there are excessively long tobacco shreds or whether there are tobacco clumps.

[0098] When the area parameter of an approximate curve is greater than a preset area threshold, i.e., when Sn>S0, the number of tobacco clumps is recorded as 1. When the area parameter of the approximate curve is less than or equal to the preset area threshold, i.e., when Sn≤S0, the number of tobacco clumps is recorded as 0.

[0099] S313. Obtain the sum of the number of multiple tobacco clumps in the tobacco image, and record the sum of the number of multiple tobacco clumps in the tobacco image as the first total value.

[0100] S314. Determine whether the first total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is greater than the preset number range.

[0101] Let the first total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image be Nt, and the first total value after the tearing by the roller assembly be N'; and let the preset number range be [a3, b3].

[0102] That is, step S314: determine whether Nt> a3 exists.

[0103] When Nt > b3, then execute step S420 and control the roller assembly 120 to increase the current speed until N'∈[a1, b1].

[0104] When Nt If ≤ b3, then execute step S520 to determine whether there exists Nt∈[a3, b3].

[0105] When Nt∈[a3, b3], the roller assembly 120 is controlled to maintain the current rotation speed.

[0106] When Nt When < a3, the roller assembly 120 is controlled to reduce the current speed until N'∈[a1, b1].

[0107] Similarly, by extracting the set of edge contour points of the tobacco and generating an approximate curve, the area parameters of the tobacco can be obtained more accurately, thus accurately reflecting the actual size of the tobacco and determining whether clumps of tobacco exist. Furthermore, by obtaining the total number of clumps of tobacco (i.e., the first total value), as the basis for the tearing control of the beating roller assembly 120, more precise tearing control of the tobacco can be achieved. Further, by dynamically adjusting the rotation speed of the beating roller assembly 120, the first total value is ensured to always remain within a preset range, guaranteeing that the number of clumps of tobacco is not excessive. This helps improve the quality consistency of tobacco products, reduces the occurrence of clumps of tobacco, and thus avoids quality problems caused by inconsistent sizes.

[0108] In addition, such as Figure 11 As shown, in some embodiments, the tobacco beating method further includes:

[0109] The preset range also includes a preset total value threshold.

[0110] When the first total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is within a preset number range, that is, when Nt∈[a3, b3], the following steps are executed.

[0111] S600. The sum of the first total values ​​obtained in the step of obtaining the physical parameters of tobacco from the tobacco images corresponding to the multiple tobacco images, and the sum of the multiple first total values ​​is recorded as the second total value.

[0112] Specifically, let the second total value be N_total. Assume the first total value obtained from one tobacco image is denoted as N1, t=1; the first total value obtained from another tobacco image is denoted as N2, t=2, and so on. Then, there exists N_total = N1 + N2 + ... + Nt. That is, in step S600, multiple Nt values ​​corresponding to multiple tobacco images are obtained, and the sum of these multiple Nt values ​​is denoted as N_total.

[0113] S700: Determine whether the second total value is greater than the preset total value threshold.

[0114] Let the preset total value threshold be a4. That is, step S700: determine whether there exists N_total > a4.

[0115] When N_total > a_4, the roller assembly 120 is controlled to increase the current speed until N_total ≤ a_4.

[0116] When N_total ≤ a4, the roller assembly 120 is controlled to maintain the current rotation speed.

[0117] Specifically, when N_total > a4, it indicates that the tobacco shreds are too long or the number of tobacco clumps is too large in multiple tests, requiring further increase in tearing force. When N_total > a4, it indicates that the overall tearing degree of the tobacco quality is appropriate, and the current rotation speed of the beating roller assembly 120 should be maintained.

[0118] Generally, due to the varying degrees of dispersion of tobacco shreds within the air duct caused by the blowing action of the first blower assembly 130, the distribution of tobacco clumps, excessively long tobacco shreds, and normal tobacco shreds in each tobacco image may differ, potentially leading to variations in the measurement of the first total value in each tobacco image. Therefore, in this embodiment, a second total value, accumulated from multiple first total values ​​across multiple tobacco images, is used to determine the actual distribution of tobacco clumps, excessively long tobacco shreds, and normal tobacco shreds within the first air duct 130a. This allows for a more accurate assessment of the tobacco size distribution, reducing the probability of errors in a single detection. Multiple detections and cumulative statistics further reduce this error, improving the quality of tobacco tearing and enhancing the stability of the tobacco product.

[0119] In other embodiments, the process further includes performing grayscale processing on the tobacco image before step S210.

[0120] Therefore, by performing grayscale processing on tobacco images, it is beneficial to reduce the difficulty of subsequent computational processing of tobacco images and improve the accuracy of edge definition of tobacco images.

[0121] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this application and for simplification, 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 this application. Furthermore, the terms "first" and "second," if used, are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, the term "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0122] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0123] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The embodiments described above only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A tobacco beating roller system, characterized in that, The tobacco beating system includes: A beating roller assembly, comprising a tearing area, an inlet, and an outlet, wherein the inlet and the outlet are both connected to the tearing area, and the beating roller assembly is used to tear tobacco within the tearing area; A first blower assembly is provided with a first air duct, a first feed inlet and a light-transmitting part; the first feed inlet is connected to the first air duct and the light-transmitting part is positioned corresponding to the first air duct. A conveying assembly, the conveying assembly including a first conveying path, the conveying assembly being used to convey tobacco within the tearing area to the first air duct along the first conveying path; An imaging component; the imaging component is disposed opposite to the light-transmitting part and is used to acquire an image of tobacco in the first air duct through the light-transmitting part; The control component is communicatively connected to the conveying component, the beating roller component, the first blower component, and the imaging component. The control component is used to acquire the physical parameters of the tobacco based on the tobacco image and control the rotation speed of the beating roller component based on the physical parameters.

2. The tobacco beating system according to claim 1, characterized in that, The first blower assembly includes a first blower element and a first housing assembly; the first housing assembly is provided with a first air duct extending along a first direction; the first blower element is connected to the first housing assembly and is used to blow air into the first air duct; the bottom of the first housing assembly is provided with a first discharge port; the first discharge port is connected to the first air duct; wherein, the first direction is the direction from the bottom to the top of the first housing assembly.

3. The tobacco beating system according to claim 2, characterized in that, The tobacco beating roller system further includes a second blower assembly, which includes a second blower element and a second housing assembly. The second housing assembly is provided with a second air duct extending in a second direction and a second discharge port. The second blower element is connected to the second housing assembly and is used to blow air into the second air duct. The second discharge port is located at the top of the second housing assembly and communicates with the second air duct. The first discharge port is configured to circulate with the second air duct; wherein, the second direction is the direction from the bottom to the top of the second housing assembly.

4. The tobacco beating system according to claim 2, characterized in that, The first housing assembly is further provided with a third discharge port; the third discharge port is connected to the first air duct; the distance from the third discharge port to the top of the first housing assembly is less than the distance from the third discharge port to the bottom of the first housing assembly; the tobacco beating roller system further includes a negative pressure assembly; the negative pressure assembly is provided with a negative pressure air duct; the negative pressure air duct is connected to the first air duct through the third discharge port.

5. The tobacco beating system according to claim 1, characterized in that, The tobacco beating system also includes a screen assembly, and the conveying assembly is further provided with a second conveying path; the screen is used to filter the tobacco; the tobacco that can pass through the screen holes on the screen assembly is conveyed to the first air duct through the second conveying path; the screen assembly is provided with a first side and a second side opposite to each other along its own length direction; the first side is arranged opposite to the inlet, and the tobacco that does not pass through the screen holes can enter the inlet from the first side.

6. A method for beating tobacco with a roller, characterized in that, The tobacco beating method includes: When the first blower assembly is working, a tobacco image is obtained through the light-transmitting part of the first blower assembly in the first air duct of the first blower assembly; The physical parameters of the tobacco are obtained from the tobacco image; The rotation speed of the beating roller assembly is controlled according to the physical parameters so that the physical parameters of the tobacco after being torn by the beating roller assembly are within a preset range.

7. The tobacco beating method according to claim 6, characterized in that, The step of controlling the rotation speed of the beating roller assembly according to the physical parameters, so that the physical parameters of the tobacco after being torn by the beating roller assembly are within a preset range, includes: When the physical parameters obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image are greater than a preset range, the current rotation speed of the beating roller assembly is increased until the physical parameters of the tobacco after being torn by the beating roller assembly are within the preset range. When the physical parameters obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image are within the preset range, the roller assembly is controlled to maintain the current rotation speed. When the physical parameters are less than the preset range, the current rotation speed of the beating roller assembly is reduced, and the physical parameters of the tobacco after being torn by the beating roller assembly are within the preset range.

8. The tobacco beating method according to claim 7, characterized in that, The step of obtaining the physical parameters of the tobacco based on the tobacco image includes: The physical parameters include length parameters; the preset range includes a preset length range; Obtain the set of edge contour points of the tobacco within the tobacco image; Based on the set of edge contour points, an approximate curve of the tobacco is obtained; Obtain the length parameter of the approximate curve; When the length parameter obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is greater than the preset length range, the current rotation speed of the beating roller assembly is increased until the length parameter of the tobacco after being torn by the beating roller assembly is within the preset length range. When the length parameter is within the preset length range, the roller assembly is controlled to maintain the current rotation speed; When the length parameter obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is less than the preset length range, the current rotation speed of the beating roller assembly is reduced until the physical parameters of the tobacco after being torn by the beating roller assembly are within the preset length range.

9. The tobacco beating method according to claim 7, characterized in that, The step of obtaining the physical parameters of tobacco within a preset detection area based on the tobacco image includes: The physical parameters include the number of tobacco clumps; the preset range includes a preset number range; Obtain the set of edge contour points of the tobacco within the tobacco image; Based on the set of edge contour points, an approximate curve of the tobacco is obtained; Obtain the area parameter of the approximate curve; When the area parameter of an approximate curve is greater than a preset area threshold, the number of tobacco clumps is recorded as 1; when the area parameter of the approximate curve is less than or equal to the preset area threshold, the number of tobacco clumps is recorded as 0. Obtain the sum of the number of multiple tobacco clumps within the tobacco image, and record the sum of the number of multiple tobacco clumps within the tobacco image as the first total value; When the first total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is greater than the preset number range, the current rotation speed of the beating roller assembly is increased until the first total value corresponding to the tearing by the beating roller assembly is within the preset number range. When the first total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is within the preset number range, the roller assembly is controlled to maintain the current rotation speed. When the first total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is less than the preset number range, the roller assembly is controlled to reduce the current rotation speed until the first total value corresponding to the tearing by the roller assembly is within the preset number range.

10. The tobacco beating method according to claim 9, characterized in that, The tobacco beating method further includes: The preset range also includes a preset total value threshold; When the first total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image is within the preset number range, the sum of the first total values ​​obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image corresponding to the multiple tobacco images is obtained, and the sum of the multiple first total values ​​is recorded as the second total value; When the second total value obtained in the step of obtaining the physical parameters of tobacco based on the tobacco image exceeds the preset total value threshold, the current rotation speed of the beating roller assembly is increased until the second total value corresponding to the tearing by the beating roller assembly is less than or equal to the preset total value threshold; otherwise, the current rotation speed of the beating roller assembly is maintained.

Images