Cigarette circumference online detection device

Abstract

The utility model discloses a cigarette circumference online detection device. The device comprises a first cigarette conveying belt, a second cigarette conveying belt and a detection device, the inductive coupling devices comprise laser transmitters and laser receivers, the laser transmitters and the laser receivers are arranged on the two sides of the first cigarette conveying belt respectively, and incident laser input into the laser receivers by the laser transmitters is perpendicular to the axial direction of the cigarettes; the inductive coupling device is in signal connection with the controller; a mounting plate, wherein each inductive coupling device is mounted on the mounting plate; a feeding port is formed in the middle area of the mounting plate, and the tail end of the first cigarette conveying belt is close to the feeding port; the laser transmitter and the laser receiver of each inductive coupling device are arranged around the feeding port; the mounting plate driving assembly is used for driving the mounting plate to rotate, and the rotating axis direction of the mounting plate is parallel to the advancing direction of the first cigarette conveying belt; and the mounting plate driving assembly is in signal connection with the controller.

Description

Technical Field

[0001] The present application relates to the field of cigarette quality inspection equipment, and specifically to an online cigarette circumference detection device. Background Art

[0002] In modern cigarette packaging production, with the continuous advancement of technology, automated production processes have gradually become popular, but customers have strict control over the defects in cigarette rolling, and the fluctuation defects of the cigarette circumference are also major quality defects, so online detection of cigarette circumference has become a key equipment on a production line.

[0003] The production of a cigarette requires multiple receiving and output processes, and cigarette rods and filter rods are important components of cigarettes. At present, most of the cigarette rolling and connecting units used by domestic cigarette factories are mainly PROTOS and PASSIM type rolling and connecting machines, while filter rod forming machines are mostly KDF2, KDF4 and other models. Due to the high production speed of such units, the cigarette and cigarette conveying belt is not stable, the position of the large and small pressure plates and the cigarette tongue is deviated, the cigarette and cigarette buckle is not evenly coated, and impurities and foreign matter are mixed in. Various reasons cause large circumference fluctuations during cigarette forming, such as the cigarette circumference exceeds the standard fluctuation range of ±0.20mm. These cigarettes are all bad cigarettes and need to be detected and eliminated. At present, cigarette manufacturers generally have two types of inspections for the circumference of cigarettes: offline inspection and online inspection. Offline inspection refers to the sampling inspection of cigarettes by technicians or machine operators. This inspection generally uses measuring instruments in the quality inspection room as offline inspection. However, this method cannot provide timely data feedback to operators, and during this period, operators continue to produce. Once quality defects are found, they cannot be dealt with in time, and quality cannot be tracked in real time, which can easily cause quality accidents or material waste. In comparison, the demand for online testing is becoming more and more urgent.

[0004] Some of the online cigarette circumference detection methods currently on the market use cavity pressure detection. Compressed air with stable pressure passes through the formed cigarette rods, and the opposite detection probe senses the air pressure changes to obtain the corresponding circumference data. However, due to the long-term accumulation of latex and dust in the production environment, the measurement accuracy is reduced and the detection effect is poor. It can be seen that this method still cannot meet the needs of online cigarette detection. In addition, even if the current online detection technology identifies problematic cigarettes online, most of them require manual or mechanical intervention to manually mark and remove problematic cigarettes, and the efficiency and accuracy are relatively low. Utility Model Content

[0005] The present application solves the existing problems of difficulty in online cigarette detection and low detection accuracy and efficiency by providing an online cigarette circumference detection device, and realizes continuous and comprehensive online detection of cigarettes running on the production line with high detection accuracy, high efficiency and small error.

[0006] The present application provides a device for online detection of cigarette circumference, comprising:

[0007] A cigarette conveying assembly comprises a first driving mechanism and a first cigarette conveying belt, wherein a plurality of cigarettes are sequentially arranged on the first cigarette conveying belt along the axial direction; the first driving mechanism is used to drive the first cigarette conveying belt to move forward, and the first driving mechanism is connected to a controller signal;

[0008] A plurality of inductive coupling devices; the inductive coupling devices include a laser transmitter and a laser receiver, the laser transmitter and the laser receiver of the same inductive coupling device are respectively arranged on both sides of the first cigarette conveyor belt, and the incident laser input from the laser transmitter to the laser receiver is perpendicular to the axial direction of the cigarette; the inductive coupling device is connected to the controller signal;

[0009] A mounting plate, on which each of the inductive coupling devices is mounted; a feeding port is provided in the middle area of ​​the mounting plate, and the end of the first cigarette conveyor belt is close to the feeding port; a laser transmitter and a laser receiver of each of the inductive coupling devices are arranged around the feeding port;

[0010] The mounting plate driving assembly is used to drive the mounting plate to rotate, and the rotating axis of the mounting plate is parallel to the traveling direction of the first cigarette conveyor belt; the mounting plate driving assembly is connected to the controller signal.

[0011] In one possible implementation,

[0012] An annular correcting block is arranged around the feeding port, and the axial direction of the correcting block is parallel to the traveling direction of the first cigarette conveyor belt; along the traveling direction of the first cigarette conveyor belt, the inner diameter of the correcting block gradually decreases, and the end of the correcting block with a smaller inner diameter is installed at the feeding port.

[0013] In one possible implementation,

[0014] There is an angle between the incident lasers of two adjacent inductive coupling devices.

[0015] In the above possible implementation, further,

[0016] The angle between the incident lasers of two adjacent inductive coupling devices is 60°; there are three inductive coupling devices in total.

[0017] In a possible implementation, the mounting plate driving assembly includes:

[0018] A driving motor, wherein the output shaft of the driving motor is parallel to the rotation axis of the mounting plate, and the end of the output shaft is coaxially fixedly connected with a worm;

[0019] A worm wheel is fixedly arranged on the mounting plate and is adapted and meshed with the worm; the axial direction of the worm wheel is parallel to the traveling direction of the first cigarette conveyor belt; an opening is formed in the middle of the worm wheel, and the size of the opening is not less than the size of the feeding port.

[0020] In one possible implementation,

[0021] The rotation axis of the mounting plate is higher than the axis of at least some of the cigarettes on the first cigarette conveyor belt.

[0022] In one possible implementation,

[0023] It also includes a rejection component, which includes a second cigarette conveyor belt, a push rod, a second drive mechanism and a third drive mechanism; the second cigarette conveyor belt and the first cigarette conveyor belt are respectively arranged on both sides of the feeding port, the height and the travel direction of the second cigarette conveyor belt are the same as those of the first cigarette conveyor belt, and the head end of the second cigarette conveyor belt is close to the feeding port; the push rod is arranged around the second cigarette conveyor belt, and a plurality of the push rods are arranged in parallel in sequence, and the arrangement direction is parallel to the travel direction of the second cigarette conveyor belt; the second drive mechanism is configured to drive each of the push rods to extend and retract respectively, and the extension and retraction direction of the push rods is perpendicular to the travel direction of the second cigarette conveyor belt; the second drive mechanism and the third drive mechanism are both connected to the controller signal.

[0024] One or more technical solutions provided by this application have at least the following technical effects or advantages:

[0025] This application uses multiple inductive coupling devices to perform multiple simultaneous data sampling on the same cigarette, and can simultaneously obtain the diameter information of multiple circles on a certain cigarette, thereby obtaining the circumference range of the tested cigarette, and comparing it with the standard circumference range required for the current cigarette, so as to quickly determine whether the circumference quality control of the current tested cigarette is qualified. Combined with the controller and the continuous first cigarette conveyor belt, it can be relatively easy to achieve fast and continuous online circumference detection of cigarettes in actual application scenarios such as cigarette factories. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A side structural diagram of a device for online cigarette circumference detection provided in an embodiment of the present application;

[0028] Figure 2 This is a front cross-sectional view of the inductive coupling device and the mounting plate as a whole provided in an embodiment of the present application.

[0029] Reference numerals:

[0030] 1. First driving mechanism; 2. First cigarette conveyor belt; 3. Laser transmitter; 4. Laser receiver; 5. Mounting plate; 6. Feed port; 7. Correction block; 8. Driving motor; 9. Worm; 10. Worm gear; 11. Push rod; 13. Second cigarette conveyor belt; 14. Third driving mechanism; 15. Air pump; 16. Air delivery pipe; 17. Electronic valve; 18. Sealed air chamber. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0032] In the description of the embodiments of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] like Figure 1 The figure shows a side view of the structure of the online cigarette circumference detection device provided in the embodiment of the present application, in which the dotted line represents the laser emitted by the laser emitter. The present embodiment discloses an online cigarette circumference detection device, which includes:

[0034] The cigarette conveying assembly includes a first driving mechanism 1 and a first cigarette conveying belt 2, and a plurality of cigarettes are arranged in sequence along the axial direction on the first cigarette conveying belt 2; the first driving mechanism 1 is used to drive the first cigarette conveying belt 2 to move forward, and the first driving mechanism 1 is connected to the controller signal.

[0035] Multiple inductive coupling devices; the inductive coupling devices include a laser transmitter 3 and a laser receiver 4, the laser transmitter 3 and the laser receiver 4 of the same inductive coupling device are respectively arranged on both sides of the first cigarette conveyor belt 2, the incident laser input from the laser transmitter 3 to the laser receiver 4 is perpendicular to the axial direction of the cigarette; the inductive coupling device is connected to the controller signal. Figure 2 , which is a front cross-sectional view of the inductive coupling device and the mounting plate as a whole in the online cigarette circumference detection device provided in an embodiment of the present application; the dotted line in the figure represents the laser emitted by the laser transmitter.

[0036] A mounting plate 5, on which each of the inductive coupling devices is mounted; a feeding port 6 is provided in the middle region of the mounting plate 5, and the end of the first cigarette conveyor belt 2 is close to the feeding port 6; a laser transmitter 3 and a laser receiver 4 of each of the inductive coupling devices are arranged around the feeding port 6;

[0037] The mounting plate 5 driving assembly is used to drive the mounting plate 5 to rotate, and the rotating axis of the mounting plate 5 is parallel to the traveling direction of the first cigarette conveyor belt 2; the mounting plate 5 driving assembly is connected to the controller signal.

[0038] Specifically, the laser beam emitted by the laser transmitter 3 in the inductive coupling device is processed into parallel light through a group of lenses. As long as the object to be measured blocks the beam, a signal will be generated on the laser receiver 4; in this embodiment, all signals generated on the laser receiver 4 are sent in analog form through RS232 serial port communication, and the data is transmitted to the controller in the form of pulse time intervals. The data processing software on the controller analyzes and processes the current cigarette rod circumference data, including obtaining the diameter of the circumference of the current tested cigarette, and the comparison result of the diameter data with the current standard diameter range of the cigarette. In this embodiment, multiple inductive coupling devices are used to perform multiple simultaneous data sampling on the same cigarette passing through, and the diameter information of multiple circumferences on a certain cigarette can be obtained at the same time, thereby obtaining the circumference range of the tested cigarette, and comparing it with the standard circumference range required for the current cigarette, so as to quickly determine whether the circumference quality control of the current tested cigarette is qualified or not. Combined with the controller and the continuous first cigarette conveyor belt 2, it is relatively easy to realize fast and continuous online circumference detection of cigarettes in actual application scenarios such as cigarette factories. In addition, by controlling each inductive coupling device to rotate around the cigarette, while obtaining the diameter data of the tested area of ​​the cigarette, the deflection of the axis of the tested area of ​​the cigarette relative to the axis of the cigarette when it is normally straight can also be known, thereby realizing simultaneous online detection of the circumference and straightness of the cigarette.

[0039] Regarding the controller used in this embodiment, there are a variety of devices to choose from in actual application scenarios, such as industrial computers, PLCs, etc., and the specific signal transmission method can also be flexibly selected according to actual needs. Since the specific controller selection and configuration, the specific signal transmission method, etc. are conventional technologies for those skilled in the art under the guidance of the technical solution of this application, this application will not go into too much detail here.

[0040] In a preferred technical solution of this embodiment,

[0041] An annular correcting block 7 is arranged around the feeding port 6, and the axial direction of the correcting block 7 is parallel to the traveling direction of the first cigarette conveyor belt 2; along the traveling direction of the first cigarette conveyor belt 2, the inner diameter of the correcting block 7 gradually decreases, and the end of the correcting block 7 with a smaller inner diameter is installed at the feeding port 6.

[0042] Specifically, the annular correction block 7 can gradually straighten the cigarettes as they are placed at a relatively tilted angle and gradually enter the feed port 6 from far to near, thereby achieving uniform correction of the cigarettes while preventing the correction from being too large, which may cause the cigarettes with a larger tilt angle on the first cigarette conveyor belt 2 to break, or even hinder or damage the subsequent cigarettes.

[0043] In a preferred technical solution of this embodiment,

[0044] There is an angle between the incident lasers of two adjacent inductive coupling devices.

[0045] Specifically, by setting the angle between adjacent incident lasers, circumferential data of multiple different areas on the same cigarette can be obtained simultaneously, further improving the online detection accuracy and efficiency.

[0046] In the above preferred technical solution, further,

[0047] The angle between the incident lasers of two adjacent inductive coupling devices is 60°; there are three inductive coupling devices in total.

[0048] Specifically, if Figure 2 As shown, the three groups of inductive coupling devices achieve simultaneous online circumferential detection of the entire circumferential area of ​​the cigarette through a specific 60° angle, further reducing detection errors and improving detection accuracy and efficiency.

[0049] Secondly, the diameter of the cigarette is obtained based on three sets of inductive coupling devices, which is more conducive to calculating the edge of the cigarette using the mean square error method, so that the data display is closer to the actual position of the cigarette. All the detection points that are obtained are converted by the mean square error equation to obtain the degree of dispersion, and the ones with large deviations are removed. Finally, the valid points are confirmed and fitted into a straight line.

[0050] Finally, a sampling and averaging algorithm is needed to remove multiple points with large deviations to reflect the real data.

[0051] In this embodiment, after processing, the data format can be changed through the corresponding industrial software and converted into pixel form and digital form, so that all valid points on the edges can form the outer contour of the cigarette, and can also form intuitive numbers, such as diameter, outer diameter, circumference, position, out-of-roundness, etc. Finally, a visualization terminal can be connected to display the changes in real-time circumference data on the terminal interface. Through the corresponding industrial software, a standard template can be established, and standard data parameters can be set inside the template, such as: upper deviation, lower deviation, X mean, Y mean, etc. All cigarettes can be compared with the standard template data. If the cigarette data is within the set tolerance, it means that this section of cigarettes is qualified, otherwise it is unqualified.

[0052] In a preferred technical solution of this embodiment, the mounting plate 5 driving assembly includes:

[0053] A driving motor 8, whose output shaft is parallel to the rotation axis of the mounting plate 5, and a worm 9 is coaxially fixedly connected to the end of the output shaft;

[0054] The worm wheel 10 is fixedly arranged on the mounting plate 5 and is adapted and meshed with the worm 9; the axial direction of the worm wheel 10 is parallel to the traveling direction of the first cigarette conveyor belt 2; an opening is formed in the middle of the worm wheel 10, and the size of the opening is not less than the size of the feeding port 6.

[0055] Specifically, by driving through a worm gear mechanism, on the one hand, the rotation accuracy can be ensured, and a quick stop can be achieved when necessary; on the other hand, the rotation speed can be controlled to avoid vibration caused by too fast rotation and incomplete laser scanning; in addition, the worm gear 10 can be easily made into a hollow structure to facilitate the normal passage of the first cigarette conveyor belt 2.

[0056] In a preferred technical solution of this embodiment,

[0057] The rotation axis of the mounting plate 5 is higher than the axis of at least some of the cigarettes on the first cigarette conveyor belt 2 .

[0058] Specifically, such a design can avoid as much as possible the data error caused by the eccentricity between the inductive coupling device and the cigarette during the rotation process.

[0059] In a preferred technical solution of this embodiment,

[0060] It also includes a rejection component, which includes a second cigarette conveyor belt 13, a push rod 11, a second drive mechanism and a third drive mechanism 14; the second cigarette conveyor belt 13 and the first cigarette conveyor belt 2 are respectively arranged on both sides of the feeding port 6, the height and the travel direction of the second cigarette conveyor belt 13 are the same as those of the first cigarette conveyor belt 2, and the head end of the second cigarette conveyor belt 13 is close to the feeding port 6; the push rod 11 is arranged around the second cigarette conveyor belt 13, and a plurality of the push rods 11 are arranged in parallel in sequence, and the arrangement direction is parallel to the travel direction of the second cigarette conveyor belt 13; the second drive mechanism is configured to drive each of the push rods 11 to extend and retract, and the extension and retraction direction of the push rods 11 is perpendicular to the travel direction of the second cigarette conveyor belt 13; the second drive mechanism and the third drive mechanism 14 are both connected to the controller signal.

[0061] In this preferred technical solution, the cigarettes that have passed through the feed port 6 after scanning and detection are transported to the next process by the second cigarette conveyor belt 13. During this process, through multiple push rods 11, combined with the data feedback of the inductive coupling device, problematic cigarettes that have traveled to different positions on the first cigarette conveyor belt 2 can be pushed out and removed without affecting the movement of subsequent cigarettes.

[0062] More specifically, in the preferred embodiment, the second driving mechanism used mainly includes an air pump 15, an air supply pipe 16, an electronic valve 17 and a sealed air chamber 18. The output end of the air pump 15 is connected to a plurality of sealed air chambers 18 through the air supply pipe 16. The number of sealed air chambers 18 is the same as that of the push rod 11 and corresponds to each other. One end of the push rod 11 extends into the corresponding sealed air chamber 18 and is sealed and slidably connected thereto, and the other end extends out of the sealed air chamber 18 to form a structure similar to that of a syringe. The number of electronic valves 17 is the same as that of the air supply pipe 16 and corresponds to each other. Each electronic valve 17 is respectively arranged on the corresponding air supply pipe 16, and the electronic valve 17 is connected to the controller signal. After the controller determines the problematic cigarette through the data transmitted by each inductive coupling device, the controller determines the position of the current problematic cigarette by obtaining parameters such as the current travel speed of the first cigarette conveyor belt 2 and the second cigarette conveyor belt 13. Based on the position information of the problematic cigarette, the controller controls the air pump 15 to operate, and controls the electronic valve 17 corresponding to the push rod 11 at the required position to open, and the sealed air chamber 18 is inflated to push the push rod 11 out, and the push rod 11 further pushes the problematic cigarette at the current position out of the second cigarette conveyor belt 13, thereby realizing the removal of the problematic cigarette.

[0063] It should be noted that this preferred embodiment only provides a specific optional method. Under the guidance of the disclosure of this application, other specific selections of the second drive mechanism are conventional techniques for those skilled in the art and will not be elaborated herein.

[0064] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0065] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. An online cigarette circumference detection device, It is characterized in that include: A cigarette conveying assembly comprises a first driving mechanism and a first cigarette conveying belt, wherein a plurality of cigarettes are sequentially arranged on the first cigarette conveying belt along the axial direction; the first driving mechanism is used to drive the first cigarette conveying belt to move forward, and the first driving mechanism is connected to a controller signal; A plurality of inductive coupling devices; the inductive coupling devices include a laser transmitter and a laser receiver, the laser transmitter and the laser receiver of the same inductive coupling device are respectively arranged on both sides of the first cigarette conveyor belt, and the incident laser input from the laser transmitter to the laser receiver is perpendicular to the axial direction of the cigarette; the inductive coupling device is connected to the controller signal; A mounting plate, on which each of the inductive coupling devices is mounted; a feeding port is provided in the middle area of ​​the mounting plate, and the end of the first cigarette conveyor belt is close to the feeding port; a laser transmitter and a laser receiver of each of the inductive coupling devices are arranged around the feeding port; The mounting plate driving assembly is used to drive the mounting plate to rotate, and the rotating axis of the mounting plate is parallel to the traveling direction of the first cigarette conveyor belt; the mounting plate driving assembly is connected to the controller signal.

2. The device for online cigarette circumference detection according to claim 1, It is characterized in that An annular correcting block is arranged around the feeding port, and the axial direction of the correcting block is parallel to the traveling direction of the first cigarette conveyor belt; along the traveling direction of the first cigarette conveyor belt, the inner diameter of the correcting block gradually decreases, and the end of the correcting block with a smaller inner diameter is installed at the feeding port.

3. The device for online cigarette circumference detection according to claim 1, It is characterized in that There is an angle between the incident lasers of two adjacent inductive coupling devices.

4. The device for online cigarette circumference detection according to claim 3, It is characterized in that The angle between the incident lasers of two adjacent inductive coupling devices is 60°; there are three inductive coupling devices in total.

5. The device for online cigarette circumference detection according to claim 1, It is characterized in that The mounting plate drive assembly comprises: A driving motor, wherein the output shaft of the driving motor is parallel to the rotation axis of the mounting plate, and the end of the output shaft is coaxially fixedly connected with a worm; A worm wheel is fixedly arranged on the mounting plate and is adapted and meshed with the worm; the axial direction of the worm wheel is parallel to the traveling direction of the first cigarette conveyor belt; an opening is formed in the middle of the worm wheel, and the size of the opening is not less than the size of the feeding port.

6. The device for online cigarette circumference detection according to claim 1, It is characterized in that The rotation axis of the mounting plate is higher than the axis of at least some of the cigarettes on the first cigarette conveyor belt.

7. The device for online cigarette circumference detection according to claim 1, It is characterized in that It also includes a rejection component, which includes a second cigarette conveyor belt, a push rod, a second drive mechanism and a third drive mechanism; the second cigarette conveyor belt and the first cigarette conveyor belt are respectively arranged on both sides of the feeding port, the height and the travel direction of the second cigarette conveyor belt are the same as those of the first cigarette conveyor belt, and the head end of the second cigarette conveyor belt is close to the feeding port; the push rod is arranged around the second cigarette conveyor belt, and a plurality of the push rods are arranged in parallel in sequence, and the arrangement direction is parallel to the travel direction of the second cigarette conveyor belt; the second drive mechanism is configured to drive each of the push rods to extend and retract respectively, and the extension and retraction direction of the push rods is perpendicular to the travel direction of the second cigarette conveyor belt; the second drive mechanism and the third drive mechanism are both connected to the controller signal.

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