Cigarette tipping paper wrap angle measuring device
By designing a device for measuring the wrapping angle of cigarette tipping paper, and using a transmission component and camera to automatically measure the wrapping angle, the problem of low measurement accuracy in existing technologies has been solved, thereby improving the quality and efficiency of cigarette production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA TOBACCO SICHUAN IND CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-09
Smart Images
Figure CN224330347U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cigarette manufacturing technology, and in particular to a device for measuring the wrapping angle of cigarette tipping paper. Background Technology
[0002] In the cigarette manufacturing process, tipping paper, as a key material connecting the cigarette and the filter, directly affects the amount of adhesive applied. Excessive adhesive can clog ventilation holes and cause waste, while insufficient adhesive can lead to air leakage. An incorrect wrapping angle can cause wrinkles in the tipping paper. Furthermore, the wrapping angle also significantly impacts the cigarette's appearance, draw resistance stability, and production efficiency. The wrapping angle is defined as the angle formed between the two ends of the tipping paper on the adhesive roller of the cigarette rolling machine during the cigarette rolling process.
[0003] In related technologies, measurements are often taken manually using protractors. However, cigarette paper is not a simple line; the angle and position need to be adjusted repeatedly to measure the approximate wrap angle. The test results are easily affected by the subjective factors of the testers, resulting in low accuracy of the wrap angle measurement. Utility Model Content
[0004] Therefore, it is necessary to provide a device for measuring the wrap angle of cigarette tipping paper to address the problem of low accuracy in measuring the wrap angle.
[0005] In a first aspect, this application provides a device for measuring the wrapping angle of cigarette tipping paper, the device including a transmission assembly, a camera and a main control unit;
[0006] The camera is fixed on the transmission assembly, which is used to drive the camera to move back and forth in the transmission direction of the transmission assembly.
[0007] The camera is used to capture at least two image data of the cigarette tipping paper and the gluing assembly for gluing the cigarette tipping paper; wherein, the gluing assembly includes a gluing roller and the cigarette tipping paper, the plane on which the cigarette tipping paper is located is parallel to the rotation axis of the gluing roller, and the shooting surface of the camera is perpendicular to the plane on which the cigarette tipping paper is located; there is a contact point between the cigarette tipping paper and the gluing roller, and in a direction perpendicular to the rotation axis of the gluing roller, the contact point forms a wrap angle with both ends of the cigarette tipping paper; the image data includes the area between one end of the cigarette tipping paper and the contact point, and the area between the other end of the cigarette tipping paper and the contact point;
[0008] The camera is connected to the main control unit; the main control unit is used to receive the image data and determine the measurement result of the wrap angle based on the image data.
[0009] In one embodiment, the transmission assembly includes a driving wheel, a driven wheel, and a transmission component;
[0010] In the transmission direction of the transmission assembly, the driving wheel and the driven wheel are spaced apart;
[0011] The transmission component is arranged around the driving wheel and the driven wheel; the camera is fixed to the transmission component.
[0012] In one embodiment, the transmission component includes a slider and a toothed chain;
[0013] The toothed chain is arranged around the driving wheel and the driven wheel, and one side of the slider is in contact with the toothed chain; the camera is fixed on the side of the slider away from the toothed chain.
[0014] In one embodiment, the transmission assembly further includes a tensioning structure;
[0015] The toothed chain is arranged around the driving wheel, the driven wheel and the tensioning structure;
[0016] The tensioning structure is used to tighten the toothed chain when it is controlled to move in a direction away from the camera, or to loosen the toothed chain when it is controlled to move in a direction closer to the camera.
[0017] In one embodiment, the transmission component further includes a guide rail;
[0018] The guide rail is parallel to the transmission direction, and the slider is sleeved on the guide rail;
[0019] The guide rail has a first extension end and a second extension end at its two ends respectively; the position of the first extension end corresponds to the driving wheel, and the position of the second extension end corresponds to the driven wheel; both the first extension end and the second extension end are perpendicularly connected to the guide rail.
[0020] The first extension end and the second extension end are respectively fixedly connected to at least a glass protective cover surrounding the adhesive assembly.
[0021] In one embodiment, the device further includes a motor;
[0022] The motor is connected to both the transmission assembly and the main controller.
[0023] In one embodiment, the device further includes a light source;
[0024] The light source and the camera are sequentially arranged on one side of the rotating shaft along the extension direction of the rotating shaft of the glue roller.
[0025] In one embodiment, the light source is an annular light source, and in a direction perpendicular to the rotation axis of the gluing roller, the width of the light-emitting surface of the annular light source is greater than the distance between the two ends of the cigarette tipping paper.
[0026] In one embodiment, the host computer is a programmable logic controller.
[0027] In one embodiment, the device further includes an alarm;
[0028] The alarm is connected to the main control unit.
[0029] The aforementioned cigarette tipping paper wrapping angle measuring device includes a transmission component, a camera, and a main control unit. The camera is fixed to the transmission component, which drives the camera to move back and forth in the transmission direction of the transmission component, allowing the camera to capture images of different areas of the cigarette tipping paper. The camera captures at least two images of the cigarette tipping paper and a gluing component used to apply glue to the tipping paper, serving as the basis for measuring the wrapping angle. The gluing component includes a gluing roller and the cigarette tipping paper. The plane containing the cigarette tipping paper is parallel to the rotation axis of the gluing roller, and the camera's imaging surface is perpendicular to the plane containing the cigarette tipping paper, enabling the camera to capture images of the linear cigarette tipping paper and improving the accuracy of identifying the cigarette tipping paper through image data. Accuracy; There is a contact point between the cigarette tipping paper and the gluing roller. In the direction perpendicular to the rotation axis of the gluing roller, the contact point and the two ends of the cigarette tipping paper form a wrap angle; The image data includes the area between one end of the cigarette tipping paper and the contact point, and the area between the other end of the cigarette tipping paper and the contact point; The camera is connected to the main control unit; The main control unit is used to receive the image data, identify the positions of the two ends of the cigarette tipping paper based on the image data, and determine the angle measurement result of the wrap angle according to the positions of the two ends of the cigarette tipping paper. This realizes the automated measurement of the wrap angle of the cigarette tipping paper, avoids the error caused by subjective human measurement, thereby improving the accuracy of the wrap angle measurement result. Furthermore, monitoring the accuracy of the wrap angle can also ensure the quality and production efficiency of cigarette production. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a schematic diagram of the structure of a cigarette tipping paper wrapping angle measuring device in one embodiment;
[0032] Figure 2 This is a schematic diagram of the transmission assembly in one embodiment;
[0033] Figure 3 This is a top view of the transmission assembly in one embodiment;
[0034] Figure 4 This is a schematic diagram of the structure of a cigarette tipping paper wrapping angle measuring device in another embodiment. Detailed Implementation
[0035] 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.
[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.
[0037] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0039] 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.
[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0041] As described in the background section, existing cigarette manufacturing methods for measuring the wrapping angle of the tipping paper suffer from low accuracy. The inventors have discovered that this problem arises because the wrapping angle, defined as the angle formed between the two ends of the tipping paper on the gluing roller, directly affects the amount of glue applied during cigarette production. Excessive glue application clogs ventilation holes and leads to waste, while insufficient application causes air leakage. An inappropriate wrapping angle can also cause wrinkles in the tipping paper. The wrapping angle also significantly impacts the cigarette's appearance quality, draw resistance stability, and production efficiency. Table 1 provides the ventilation rate of cigarettes rolled at different wrapping angles. Table 1 includes ventilation rate data for cigarettes rolled at wrapping angles of 158°, 163°, and 168° across 10 tests, along with the average ventilation rate data for each angle. As shown in Table 1, within the normal winding range, the ventilation rate increases with the increase of the wrap angle. For example, when the wrap angle is between 158° and 163°, the average ventilation rate is 25.6 to 27.3. This is because the increase of the wrap angle reduces the contact area and pressure between the splicing paper and the glue roller, which in turn reduces the amount of glue and causes the ventilation rate to increase. However, when the wrap angle increases to 168°, the glue is too little, which affects the adhesion of the splicing paper and causes defects such as wrinkles, openings, and air leakage in cigarettes.
[0042] Table 1
[0043]
[0044] Currently, the industry lacks standardized testing methods and procedures for cigarette tipping paper wrapping angles. Measurements are often taken manually using protractors. However, cigarette paper is not a simple line; adjustments to angle and position are necessary to obtain a rough measurement. This makes the results highly susceptible to subjective factors by the testing personnel, such as visual fatigue and inconsistent judgment standards, leading to inconsistent accuracy and hindering timely and accurate measurement. As cigarette production moves towards higher speeds, greater intelligence, and precision, accurate and real-time online measurement of cigarette tipping paper wrapping angles has become extremely urgent. A method is needed to monitor the wrapping angle status in real-time during production, promptly identifying and reporting the angle to meet the stringent quality control and production efficiency requirements of modern cigarette manufacturing.
[0045] For the reasons mentioned above, the present invention provides a device for measuring the wrapping angle of cigarette tipping paper, which aims to improve the accuracy of the measurement results of the wrapping angle of cigarette tipping paper.
[0046] See Figure 1 , Figure 1 A schematic diagram of the structure of a cigarette tipping paper wrapping angle measuring device according to an embodiment of this application is shown. The cigarette tipping paper wrapping angle measuring device 10 provided in an embodiment of this application includes a transmission assembly 11, a camera 12 and a main controller 13.
[0047] The camera 12 is fixed to the transmission assembly 11, which drives the camera 12 to move back and forth in the transmission direction of the transmission assembly 11. The camera 12 is used to capture at least two image data of the cigarette tipping paper 142 and the gluing assembly 14 for gluing the cigarette tipping paper 142. The gluing assembly 14 includes a gluing roller 141 and the cigarette tipping paper 142. The plane of the cigarette tipping paper 142 is parallel to the rotation axis of the gluing roller 141, and the shooting surface of the camera 12 is parallel to the cigarette tipping paper 142. The plane containing 2 is perpendicular; there is a contact point between the cigarette tipping paper 142 and the gluing roller 141, and in the direction perpendicular to the rotation axis of the gluing roller 141, the contact point and the two ends of the cigarette tipping paper 142 form a wrap angle 143; the image data includes the area between one end of the cigarette tipping paper 142 and the contact point, and the area between the other end of the cigarette tipping paper 142 and the contact point; the camera 12 is connected to the main control unit 13; the main control unit 13 is used to receive the image data and determine the measurement result of the wrap angle 143 based on the image data.
[0048] It is understandable that camera 12 can be a high-resolution industrial camera, thereby obtaining clearer image data. This allows the main control computer 13 to identify the position of the tipping paper based on the image data and calculate a more accurate measurement result of the wrap angle 143. Since the shooting surface of camera 12 is perpendicular to the plane containing the cigarette tipping paper 142, the cigarette tipping paper 142 appears as a "line" in the captured image data. The two ends of the cigarette tipping paper 142 are wound around other rollers of the cigarette rolling machine, resulting in straight ends and a curved portion that contacts the top roller 141. This facilitates the main control computer 13's identification and positioning of the tipping paper. When the camera 12 is driven on the transmission assembly 11, it will take pictures according to a preset cycle. The at least two pictures obtained include the area from one end of the cigarette tipping paper 142 to the contact point and the area from the other end of the cigarette tipping paper 142 to the contact point. The main controller 13 is used to identify the image including the area from one end of the cigarette tipping paper 142 to the contact point and the image from the other end of the cigarette tipping paper 142 to the contact point. The angle of the wrapping angle 143 is calculated based on the position of the cigarette tipping paper 142 in the two images.
[0049] It should be noted that the transmission assembly 11 can be a gear assembly, a chain and sprocket assembly, a belt and pulley assembly, or any other component, as long as it can fix the camera 12 to the transmission assembly 11 and move the camera 12 to capture image data of different areas. Furthermore, the camera 12 and the main control unit 13 can be connected via a wired connection or a wireless connection (such as Bluetooth or a local area network). A wired connection improves the data transmission efficiency between the camera 12 and the main control unit 13, while a wireless connection reduces structural complexity.
[0050] The aforementioned device for measuring the wrap angle 143 of the cigarette tipping paper 142 includes a transmission assembly 11, a camera 12, and a main control unit 13. The camera 12 is fixed to the transmission assembly 11, which drives the camera 12 to move back and forth in the transmission direction of the transmission assembly 11. This allows the camera 12 to capture images of different areas of the cigarette tipping paper 142. The camera 12 captures at least two images of the cigarette tipping paper 142 and the gluing assembly 14 used for gluing the tipping paper, serving as the basis for measuring the wrap angle 143. The gluing assembly 14 includes a gluing roller 141 and the cigarette tipping paper 142. The plane containing the cigarette tipping paper 142 is parallel to the rotation axis of the gluing roller 141, and the camera's imaging surface is perpendicular to the plane containing the cigarette tipping paper 142. This allows the camera 12 to capture images of the linear cigarette tipping paper 142, improving the measurement accuracy. The accuracy of cigarette tipping paper 142 is identified through image data. There is a contact point between cigarette tipping paper 142 and gluing roller 141, and the contact point forms a wrap angle 143 with the two ends of cigarette tipping paper 142. The image data includes the area between one end of cigarette tipping paper 142 and the contact point, and the area between the other end of cigarette tipping paper 142 and the contact point. Camera 12 is connected to main control unit 13. Main control unit 13 is used to receive image data, identify the positions of the two ends of cigarette tipping paper 142 based on the image data, and determine the angle measurement result of wrap angle 143 according to the positions of the two ends of cigarette tipping paper 142. This realizes the automated measurement of wrap angle 143 of cigarette tipping paper 142, avoids the error caused by human subjective measurement, thereby improving the accuracy of the measurement result of wrap angle 143. In addition, monitoring the accuracy of the wrap angle 143 can also ensure the quality and production efficiency of cigarette production.
[0051] Continue reading Figure 1 In some embodiments, the transmission assembly 11 includes a driving wheel 111, a driven wheel 112, and a transmission component 113;
[0052] In the transmission direction of the transmission assembly 11, the driving wheel 111 and the driven wheel 112 are spaced apart; the transmission component 113 is arranged around the driving wheel 111 and the driven wheel 112; and the camera 12 is fixed on the transmission component 113.
[0053] Understandably, the driving wheel 111, also known as the drive wheel, is the wheel that provides power, driven by a power source (such as an electric motor, engine, or manual operation), and transmits power through other wheels or transmission components 113. The driven wheel 112, also known as the passive wheel, is the wheel that receives power and drives other wheels or mechanical parts. It is not directly connected to a power source, but is driven through transmission components 113 (such as belts, chains, or gears). The distance between the driving wheel 111 and the driven wheel 112 is set according to the actual shooting requirements of the camera 12. The driving wheel 111 and the driven wheel 112 may each include grooves for supporting and stabilizing the transmission components 113. Driven by a power source, the drive wheel 111 rotates, thereby driving the transmission component 113 to rotate. The transmission force of the transmission component 113 drives the driven wheel 112 to rotate, causing the camera 12 fixed on the transmission component 113 to move back and forth in the transmission direction. This allows the camera to capture multiple images of the cigarette tipping paper 142 and the gluing assembly 14, which serve as the basis for determining the wrapping angle 143 of the cigarette tipping paper 142.
[0054] Continue reading Figure 1 In some embodiments, the transmission component 113 includes a slider 1131 and a toothed chain 1132;
[0055] The toothed chain 1132 is arranged around the driving wheel 111 and the driven wheel 112, and one side of the slider 1131 is in contact with the toothed chain 1132; the camera 12 is fixed on the side of the slider 1131 away from the toothed chain 1132.
[0056] It is understood that the driving wheel 111 and driven wheel 112 are provided with grooves, and the toothed chain 1132 is arranged around the grooves of the driving wheel 111 and driven wheel 112. The toothed chain 1132 is used to provide power for the reciprocating motion of the slider 1131 and the camera 12 in the transmission direction. The toothed chain 1132 can be made of metal material to increase the durability of the transmission component 113. The slider 1131 is used to fix the camera 12. The camera 12 and the slider 1131 are located on the side of the toothed chain 1132 away from the driving wheel 111 and driven wheel 112. The camera 12 and the slider 1131 can be fixed by adhesive, screws and bolts, mechanical slots, etc., as long as the function of the camera 12 being stably fixed on the slider 1131 during the transmission process can be achieved, and there is no specific limitation.
[0057] See Figure 2 , Figure 2 A schematic diagram of the structure of a transmission assembly 11 in one embodiment of this application is shown. In some embodiments, the transmission assembly 11 further includes a tensioning structure 114.
[0058] The toothed chain 1132 is arranged around the driving wheel 111, the driven wheel 112 and the tensioning structure; the tensioning structure 114 is used to tighten the toothed chain 1132 when it is controlled to move in a direction away from the camera 12, or to relax the toothed chain 1132 when it is controlled to move in a direction close to the camera 12.
[0059] It is understood that a tensioning structure refers to a device in a mechanical transmission system used to control the tension of transmission components such as chains, belts, and belts to ensure their normal and stable operation. The toothed chain 1132 is arranged around the driving wheel 111, the driven wheel 112, and the tensioning wheel of the tensioning structure. The tensioning structure also includes elastic elements such as springs, hydraulic pressure, or pneumatic pressure connected to the tensioning wheel. Adjusting the movement of the tensioning wheel regulates the tension of the toothed chain 1132, reducing slackness or slippage, and compensating for elongation or wear during use. Furthermore, ensuring the stable operation of the toothed chain 1132 through the tensioning structure allows the camera 12 to capture images smoothly even when moving in the transmission direction, thereby obtaining clearer image data and further improving the accuracy of the wrap angle 143 measurement result obtained based on the image data.
[0060] Figure 3 A top view of a transmission assembly 11 according to one embodiment of the present application is shown. In some embodiments, the transmission component 113 further includes a guide rail 1133.
[0061] The guide rail 1133 is parallel to the transmission direction, and the slider 1131 is sleeved on the guide rail 1133. At least one of the two ends of the guide rail 1133 includes a first extension end 11331 and a second extension end 11332. The position of the first extension end 11331 corresponds to the position of the driving wheel 111, and the position of the second extension end 11332 corresponds to the position of the driven wheel 112. One end of the first extension end 11331 and one end of the second extension end 11332 are perpendicularly connected to both ends of the guide rail 1133. The other end of the first extension end 11331 and the other end of the second extension end 11332 are respectively fixedly connected to at least the glass protective cover 31 surrounding the adhesive assembly 14.
[0062] It should be noted that the slider 1131 has a through-hole section in the transmission direction. The slider 1131 is fitted onto the guide rail 1133 through the through-hole section, so that the slider 1131 can only reciprocate along the direction of the guide rail 1133. Furthermore, the two ends of the guide rail 1133 correspond to the positions of the driving wheel 111 and the driven wheel 112, thereby fixing the movement trajectory of the slider 1131 and the camera 12. This avoids the situation where the movement trajectory is not fixed during the contact transmission between the slider 1131 and the toothed chain 1132, which would cause the image captured by the camera 12 to fail to meet the shooting requirements. Therefore, the setting of the guide rail 1133 can ensure the quality of image data.
[0063] Understandably, the glass protective cover 31 is used to cover the gluing assembly 14 of the cigarette machine or the entire cigarette machine to prevent dust from affecting the production of cigarettes. The corner measuring device of the wrapping angle 143 of the cigarette tipping paper 142 is set outside the glass protective cover 31. Due to the visibility of the glass protective cover 31, it does not affect the shooting quality of the camera 12.
[0064] See Figure 4 , Figure 4 A schematic diagram of the structure of a cigarette tipping paper wrapping angle measuring device is shown in another embodiment of this application. In some embodiments, the device also includes a motor 15.
[0065] The motor 15 is connected to the transmission assembly 11 and the main controller 13 respectively.
[0066] Understandably, motor 15 is a device that converts electrical energy into mechanical energy. It generates rotational motion through electromagnetic action, thereby driving the drive wheel 111 of transmission component 11 to rotate. Motor 15 is connected to the main control unit 13, so the start and stop of motor 15 are controlled by the main control unit 13. In actual use, the main control unit 13 can receive image data from camera 12 in real time. If the detected shooting angle of the image data does not meet the requirements, the main control unit 13 can control motor 15 to start, causing camera 12 to move to a position that meets the shooting requirements. This improves the automation level and efficiency of the cigarette tipping paper wrapping angle measuring device 143. The cigarette tipping paper wrapping angle measuring device also includes a power supply system, which is connected to components requiring electricity, such as motor 15, main control unit 13, and camera 12, for power supply.
[0067] Continue reading Figure 4 In some embodiments, the device further includes a light source 1515;
[0068] A light source 15 and a camera 12 are provided on at least one side of the rotating shaft along the extension direction of the rotating shaft of the glue roller 141.
[0069] It is understood that, along the extension direction of the rotation axis, a light source 15 and a camera 12 are arranged on at least one side of the rotation axis. Specifically, this can be divided into the following cases: along the extension direction of the rotation axis, a light source 15 and a camera 12 are arranged sequentially on the same side of the rotation axis; along the extension direction of the rotation axis, a light source 15 is arranged on one side of the rotation axis and a camera 12 is arranged on the other side of the rotation axis; along the extension direction of the rotation axis, a camera 12 and a light source 15 are arranged sequentially on the same side of the rotation axis. Preferably, this arrangement of arranging a light source 15 and a camera 12 sequentially on the same side of the rotation axis along the extension direction of the rotation axis allows the area between the cigarette tipping paper 142 and the gluing roller 141 to be illuminated, enabling the camera 12 to capture clearer images of the gap, facilitating the monitoring of the wrapping angle 143.
[0070] Continue reading Figure 4 In some embodiments, the light source 15 is a ring light source 15, and the width of the light-emitting surface of the ring light source 15 is greater than the distance between the two ends of the cigarette tipping paper 142.
[0071] It is understandable that by using a ring light source 15, and the width of the light-emitting surface of the ring light source 15 being greater than the distance between the two ends of the cigarette tipping paper 142, the light from the light source 15 can evenly illuminate the area being photographed, reducing the generation of shadows, thereby obtaining clearer image data and further improving the accuracy of the measurement results of the wrap angle 143.
[0072] Continue reading Figure 4 In some embodiments, the device also includes an alarm 16;
[0073] Alarm 16 is connected to main control unit 13.
[0074] Understandably, the alarm 16 is connected to the main control unit 13. When the main control unit 13 detects that the comparison between the current wrap angle 143 and the preset angle threshold results in either the current wrap angle 143 being less than the preset angle threshold by an error range, or the current wrap angle 143 being greater than the preset angle threshold by an error range, it sends an alarm command to the alarm 16. This instructs the alarm 16 to sound an alarm according to the preset alarm method, allowing technicians to respond to the alarm in a timely manner and thus avoid affecting cigarette production.
[0075] Alarm 16 can be adapted to different alarm methods, such as audible and visual alarms, wireless alarms, and wired alarms. Therefore, the connection between alarm 16 and the controller can be wired or wireless. Wired connections improve data transmission efficiency, while wireless connections reduce structural complexity. Alarm methods may include audible alarms via buzzers, light alarms via diodes, and alarm messages sent to a technician's terminal.
[0076] In some embodiments, the main controller 13 is a programmable logic controller;
[0077] Understandably, a programmable logic controller (PLC) editor can be used. PLC editors offer strong real-time performance, fast response speeds, high-speed scan cycles, and efficient logic processing capabilities. They can quickly receive image data transmitted from camera 12 and immediately process and judge it, meeting the needs of dynamic monitoring and real-time adjustment. Furthermore, PLC editors provide rich input / output interfaces and communication protocols, facilitating seamless integration with peripheral devices such as light source 15 control and motor drives, achieving integrated control. As system requirements change, the PLC editor's modules can be easily expanded or new functions added without replacing the entire main controller 13, improving investment utilization.
[0078] It should be noted that the execution logic of the main control unit 13 is as follows: control the camera 12 to open, receive image data sent by the camera 12, detect whether there is a straight line in the image data, the straight line represents the position between one end of the cigarette tipping paper 142 and the contact point. If a straight line is found, detect the angle of the first straight line and control the camera 12 to move and take a second image. If the second image data also contains a straight line, the straight line in the second image data represents the position between the other end of the cigarette tipping paper 142 and the contact point. Detect the angle of the second straight line, and calculate the included angle between the two straight lines based on the angles of the first and second straight lines, thereby obtaining the angle of the wrap angle 143. If the main control unit 13 does not detect a straight line in the image data, adjust the position of the camera 12 until a straight line can be detected in the image data returned by the camera 12.
[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, 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 various 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 device for measuring the wrapping angle of cigarette tipping paper, characterized in that, The device includes a transmission assembly, a camera, and a main control unit; The camera is fixed on the transmission assembly, which is used to drive the camera to move back and forth in the transmission direction of the transmission assembly. The camera is used to capture at least two image data of the cigarette tipping paper and the gluing assembly for gluing the cigarette tipping paper; wherein, the gluing assembly includes a gluing roller and the cigarette tipping paper, the plane on which the cigarette tipping paper is located is parallel to the rotation axis of the gluing roller, and the shooting surface of the camera is perpendicular to the plane on which the cigarette tipping paper is located; there is a contact point between the cigarette tipping paper and the gluing roller, and in a direction perpendicular to the rotation axis of the gluing roller, the contact point forms a wrap angle with both ends of the cigarette tipping paper; the image data includes the area between one end of the cigarette tipping paper and the contact point, and the area between the other end of the cigarette tipping paper and the contact point; The camera is connected to the main control unit; the main control unit is used to receive the image data and determine the measurement result of the wrap angle based on the image data.
2. The cigarette tipping paper wrapping angle measuring device according to claim 1, characterized in that, The transmission assembly includes a driving wheel, a driven wheel, and transmission components; In the transmission direction of the transmission assembly, the driving wheel and the driven wheel are spaced apart; The transmission component is arranged around the driving wheel and the driven wheel; the camera is fixed to the transmission component.
3. The cigarette tipping paper wrapping angle measuring device according to claim 2, characterized in that, The transmission components include a slider and a toothed chain; The toothed chain is arranged around the driving wheel and the driven wheel, and one side of the slider is in contact with the toothed chain; the camera is fixed on the side of the slider away from the toothed chain.
4. The cigarette tipping paper wrapping angle measuring device according to claim 3, characterized in that, The transmission assembly also includes a tensioning structure; The toothed chain is arranged around the driving wheel, the driven wheel and the tensioning structure; The tensioning structure is used to tighten the toothed chain when it is controlled to move in a direction away from the camera, or to loosen the toothed chain when it is controlled to move in a direction closer to the camera.
5. The cigarette tipping paper wrapping angle measuring device according to claim 3, characterized in that, The transmission component also includes a guide rail; The extension direction of the guide rail is parallel to the transmission direction, and the slider is sleeved on the guide rail; The guide rail has at least one first extension end and a second extension end at each end. The position of the first extension end corresponds to the driving wheel, and the position of the second extension end corresponds to the driven wheel; Both the first extension end and the second extension end are perpendicularly connected to the guide rail; The first extension end and the second extension end are respectively fixedly connected to at least a glass protective cover surrounding the adhesive assembly.
6. The device for measuring the wrapping angle of cigarette tipping paper according to claim 1, characterized in that, The device also includes a motor; The motor is connected to both the transmission assembly and the main controller.
7. The device for measuring the wrapping angle of cigarette tipping paper according to claim 1, characterized in that, The device also includes a light source; The light source and the camera are sequentially arranged on one side of the rotating shaft along the extension direction of the rotating shaft of the glue roller.
8. The cigarette tipping paper wrapping angle measuring device according to claim 7, characterized in that, The light source is a ring light source, and in a direction perpendicular to the rotation axis of the top glue roller, the width of the light-emitting surface of the ring light source is greater than the distance between the two ends of the cigarette tipping paper.
9. The device for measuring the wrapping angle of cigarette tipping paper according to claim 1, characterized in that, The main controller is a programmable logic controller.
10. The device for measuring the wrapping angle of cigarette tipping paper according to claim 1, characterized in that, The device also includes an alarm; The alarm is connected to the main control unit.