Cigarette strip flexible conveying and early warning system based on dynamic priority control

Abstract

The utility model discloses a cigarette carton flexible conveying and early warning system based on dynamic priority control, which belongs to the technical field of cigarette packaging production control and comprises a PLC (programmable logic controller), a photoelectric coupler, a first photoelectric switch and a second photoelectric switch. The first optoelectronic switch and the second optoelectronic switch monitor the cigarette carton flow in the cigarette carton conveying channel, and the PLC comprehensively judges and analyzes cigarette carton flow signals, case filling and sealing machine operation state signals and high-position carton storage device state signals, increases or decreases the priority of the high-position carton storage device and controls the cigarette carton conveying channel to convey cigarette cartons to the cigarette carton conveying channel. And the high-position carton storage device is controlled to store or release the cigarette cartons. The cigarette carton flow monitoring device achieves the functions of cigarette carton flow monitoring in the conveying channel, dynamic control over cigarette carton storage or release of the high-position carton storage device, cooperative linkage with the carton filling and sealing machine and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette packaging production control, and more specifically, particularly relates to a flexible cigarette strip conveying and warning system based on dynamic priority control. Background Technique

[0002] In a tobacco production line, it is crucial to ensure the smoothness, efficiency, and quality stability of cigarette strips from production to boxing. After the packaging machine finishes packaging the cigarette strips, they enter the case-packing machine through the cigarette strip conveying channel for case packaging. When the case-packing machine stops, the high-level cigarette strip storage device completes the storage of cigarette strips in the conveying channel; when the case-packing machine operates, the high-level cigarette strip storage device does not store cigarette strips; at the same time, when the high-level cigarette strip storage device has cigarette strips stored, during the operation of the case-packing machine, the cigarette strips are regularly released and output. Each time a row of cigarette strips is released from the high-level cigarette strip storage device with a height of H, the cigarette strips are conveyed downward through the conveying channel. Due to inertia, the above-mentioned cigarette strips are conveyed with the belt. When passing through the appearance inspection of cigarette strips on the conveying channel, various fault problems such as mis-rejection of cigarette strip appearance inspection and blockage of the rejection mechanism are caused due to the connection of cigarette strips, and it is easy to generate cigarette strip quality problems, and there is a risk that cigarette strips with quality problems flow into the next process.

[0003] Currently, the research is mainly focused on the conversion of cigarette strip flow, lacking the research on the coordinated operation of the high-level cigarette strip storage device, the case-packing machine, and the cigarette strip appearance inspection device, as well as the cigarette strip flow in the conveying channel. Content of the Utility Model

[0004] An object of the utility model is to provide a flexible cigarette strip conveying and warning system based on dynamic priority control to solve the problems of mis-detection, rejection blockage, etc. in the appearance inspection of cigarette strips on the cigarette strip conveying channel due to the connection of cigarette strips when the high-level cigarette strip storage device releases cigarette strips, without effective monitoring and coordinated linkage control.

[0005] According to the utility model, there is provided a flexible cigarette strip conveying and warning system based on dynamic priority control, including a PLC controller, an opto-coupler, a first opto-switch, and a second opto-switch. The first opto-switch and the second opto-switch are both installed on the cigarette strip conveying channel through mounting brackets. The opto-coupler and the PLC controller are both installed in the high-level cigarette strip storage device. The output ends of the first opto-switch and the second opto-switch are both connected to the input end of the PLC controller. The output end of the PLC controller is connected to the control end of the opto-coupler. The PLC controller is also communicatively connected to the upper monitoring device; wherein:

[0006] The first optoelectronic switch and the second optoelectronic switch monitor the cigarette rod flow rate in the cigarette rod conveying channel, and the PLC controller comprehensively judges and analyzes the cigarette rod flow rate signal, the operating state signal of the cartoning machine, and the state signal of the high-level cigarette rod storage device, raises or lowers the priority of the high-level cigarette rod storage device, and controls the high-level cigarette rod storage device to store or release cigarette rods.

[0007] Optionally, the high-level cigarette rod storage device is installed at the entrance of the cigarette rod conveying channel, and the high-level cigarette rod storage device grabs or releases the cigarette rods on the cigarette rod conveying channel through a mechanical gripper.

[0008] Optionally, a cigarette rod appearance detection device is further installed on the cigarette rod conveying channel, and the cigarette rod appearance detection device is arranged downstream of the high-level cigarette rod storage device.

[0009] Optionally, the second optoelectronic switch and the first optoelectronic switch are sequentially installed along the conveying direction of the cigarette rod conveying channel, between the high-level cigarette rod storage device and the cigarette rod appearance detection device.

[0010] Optionally, a rejection mechanism is further installed on the cigarette rod conveying channel, and the rejection mechanism is arranged downstream of the cigarette rod appearance detection device.

[0011] Optionally, the upper monitoring device includes an alarm, the alarm is signal-connected to the PLC controller, and the PLC controller controls the alarm to give an audible and visual alarm when the cigarette rod flow rate is detained.

[0012] According to the cigarette rod flexible conveying and early warning system based on dynamic priority control of the present disclosure, the following technical effects are achieved:

[0013] Automatically collect cigarette rod flow rate information by using optoelectronic switches, realize on-line real-time monitoring and control of the cigarette rod flow rate in the conveying channel, eliminate the influence of sudden changes in cigarette rod flow rate on the stability and effectiveness of cigarette rod appearance detection, not only reduce the need for manual intervention, but also improve the accuracy and timeliness of control, ensure the quality of cigarette rod products, and reduce the defective rate;

[0014] Through the upper interface, give an audible and visual early warning reminder for a large cigarette rod flow rate, and at the same time can automatically raise the priority of the high-level cigarette rod storage device to store cigarette rods, which helps operators to timely discover and handle potential production problems and ensure production safety;

[0015] Realize functions such as monitoring the cigarette rod flow rate in the conveying channel, dynamically controlling the storage or release of cigarette rods by the high-level cigarette rod storage device, and coordinating and linking with the cartoning machine, ensure that the cigarette rod flow rate in the conveying channel is maintained at an appropriate level, avoid blockage caused by excessive accumulation of cigarette rods or production stagnation caused by too little, thereby improving the conveying efficiency and stability of the entire production line, ensuring that cigarette rods smoothly enter the cigarette rod appearance detection, and reducing the quality risk of cigarette rods.

[0016] Other features and advantages of the present utility model will become clear from the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings incorporated in and forming a part of this specification illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model.

[0018] Figure 1 It is a schematic diagram of the architecture of a cigarette bar flexible conveying and warning system based on dynamic priority control provided for an embodiment of the present utility model;

[0019] Figure 2 It is a distribution diagram of each device in the cigarette bar conveying channel of a cigarette bar flexible conveying and warning system based on dynamic priority control provided for an embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of the installation position of the photoelectric switch detection of a cigarette bar flexible conveying and warning system based on dynamic priority control provided for an embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of the operating state of a cigarette bar in the cigarette bar conveying channel of a cigarette bar flexible conveying and warning system based on dynamic priority control provided for an embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of the pre - judgment of the signal of the case packing and sealing machine by the judgment module of the PLC controller of a cigarette bar flexible conveying and warning method based on dynamic priority control provided for an embodiment of the present utility model;

[0023] Figure 6 It is a schematic diagram of the judgment of the cigarette bar flow rate and priority by the judgment module of the PLC controller of a cigarette bar flexible conveying and warning method based on dynamic priority control provided for an embodiment of the present utility model.

[0024] The labels in the figures are as follows:

[0025] 1. Conveyor chain plate; 2. High - level cigarette storage device; 3. Mechanical gripper; 4. Conveying channel; 5. Cigarette bar appearance detection device; 6. Rejection mechanism; 7. Case packing and sealing machine. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model.

[0027] The following description of at least one exemplary embodiment is merely illustrative and in no way restrictive of the present utility model and its application or use.

[0028] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0029] In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values.

[0030] In the prior art, due to inertia, the cigarette bars are conveyed by the belt. When the appearance of the cigarette bars passing through the conveyor channel 4 is detected, various fault problems such as many misrejections in the appearance detection of the cigarette bars and blockage of the rejection mechanism 6 are caused due to the connection of the cigarette bars, and it is easy to cause cigarette bar quality problems, and there is a risk that the cigarette bars with quality problems flow into the next process. This application comprehensively analyzes and judges the actual state of the cigarette bars in the conveyor channel 4 and the operation signals of the case packer 7 and the high-level storage device 2, and controls the high-level storage device 2 to release or store the cigarette bars by increasing or decreasing the priority of the high-level storage device 2, so as to realize the functions of the coordinated operation of the case packer 7, the high-level storage device 2, and the cigarette bar appearance detection device 5, the stable flow of the cigarette bars in the conveyor channel 4, and the stable and effective operation of the cigarette bar appearance detection device 5.

[0031] The present utility model proposes an embodiment of a flexible cigarette bar conveying and warning system based on dynamic priority control. Specifically, as Figure 1 shown, it includes: a PLC controller, an optocoupler, a first photoelectric switch, and a second photoelectric switch. The first photoelectric switch and the second photoelectric switch are both installed on the cigarette bar conveyor channel 4 through mounting brackets. The optocoupler and the PLC controller are both installed in the high-level storage device 2. The output ends of the first photoelectric switch and the second photoelectric switch are both connected to the input end of the PLC controller. The output end of the PLC controller is connected to the control end of the optocoupler. The PLC controller is also communicatively connected to the upper monitoring device; wherein:

[0032] The first photoelectric switch and the second photoelectric switch monitor the cigarette flow in the cigarette conveying channel 4. The PLC controller comprehensively judges and analyzes the cigarette flow signal, the operating status signal of the case packing machine 7, and the status signal of the high-level storage bin 2, raises or lowers the priority of the high-level storage bin 2, and controls the high-level storage bin 2 to store or release cigarettes. For example, when the case packing machine 7 fails or the cigarette flow is too large, the PLC controller will raise the priority of the high-level storage bin 2 to temporarily store the excess cigarettes in the high-level storage bin 2; when the case packing machine 7 returns to normal or the cigarette flow decreases, the PLC will send a release signal to the high-level storage bin 2 to make it release the stored cigarettes back to the cigarette conveying channel 4. The functions of the linkage and collaborative work of the case packing machine 7, the high-level storage bin 2, and the cigarette appearance detection device 5, the stable cigarette flow in the conveying channel 4, and the stable and effective operation of the cigarette appearance detection device 5 are realized.

[0033] Among them, the first photoelectric switch and the second photoelectric switch are respectively installed at different positions of the cigarette conveying channel 4, and detect whether the cigarette passes through and the passing speed or quantity by emitting and receiving light beams. Using two photoelectric switches can increase the accuracy and reliability of detection. By comparing the signals of the two switches, the flow state of the cigarette can be further confirmed and misjudgment can be reduced.

[0034] It should be noted that, as Figure 2 shown, the finished cigarettes produced by the packaging machine enter the conveying channel 4 of the case packing machine 7 through the conveying chain plate 1 and then enter the case packing machine 7 for packaging. Among them, the cigarette appearance detection device 5, the high-level storage bin 2, and the case packing machine 7 are independent devices. When the high-level storage bin 2 releases cigarettes, a large number of cigarettes enter the detection area of the cigarette appearance detection device 5 closely together from the height H under the action of the conveying belt and inertia, resulting in faults such as misdetection during detection, continuous jamming at the rejection mechanism 6, and cigarette damage, and the product quality risk is increased.

[0035] In the embodiment of the present utility model, the high-level storage bin 2 is installed at the entrance of the cigarette conveying channel 4, and the high-level storage bin 2 grabs or releases the cigarettes on the cigarette conveying channel 4 through the mechanical gripper 3. The combined use of the high-level storage bin 2 and the mechanical gripper 3 enables the production line to flexibly respond to various production demand changes, such as short-term shutdowns and flow fluctuations.

[0036] In the embodiment of the present utility model, a cigarette appearance detection device 5 is also installed on the cigarette conveying channel 4. The cigarette appearance detection device 5 is arranged downstream of the high-level storage bin 2 and is used for on-line quality detection of the cigarette appearance quality. When the cigarette passes through the detection area, the cigarette appearance detection device 5 will start the light source to irradiate the surface of the cigarette and capture images through a high-speed camera or a line array scanning camera. Subsequently, the image is analyzed using an image processing algorithm to identify abnormal features that do not match the normal cigarette appearance.

[0037] In the embodiment of the present utility model, as Figure 3 shown, along the conveying direction of the cigarette rod conveying channel 4, between the high-level cigarette rod storage device 2 and the cigarette rod appearance detection device 5, a second photoelectric switch and a first photoelectric switch are sequentially installed. The first photoelectric switch is close to the cigarette rod appearance detection device 5 and is used for monitoring the relatively small cigarette rod flow rate in the conveying channel 4; the second photoelectric switch is installed on the side close to the high-level cigarette rod storage device 2 and is used for monitoring the maximum cigarette rod flow rate in the conveying channel 4.

[0038] In the embodiment of the present utility model, a rejection mechanism 6 is further installed on the cigarette rod conveying channel 4. The rejection mechanism 6 is arranged downstream of the cigarette rod appearance detection device 5 to reject the cigarette rods with defective appearances detected by the cigarette rod appearance detection device 5, and the finished cigarette rods with qualified cigarette rod appearance quality are boxed by the case packing machine 7.

[0039] In the embodiment of the present utility model, the upper monitoring device includes an alarm. The alarm is signal-connected to the PLC controller, and the PLC controller controls the alarm to give an audible and visual alarm when the cigarette rod flow rate stays.

[0040] The present utility model also provides an embodiment of a method for flexible conveying and warning of cigarette rods based on dynamic priority control, including:

[0041] Flow rate monitoring step: The first photoelectric switch and the second photoelectric switch monitor the cigarette rod flow rate in the cigarette rod conveying channel 4 to obtain a cigarette rod flow rate signal; the first photoelectric switch is installed at the upstream position of the conveying channel 4 and is used for initially monitoring the cigarette rod flow rate; the second photoelectric switch is installed at the downstream position of the conveying channel 4, closer to the conveying end point of the cigarette rod than the first photoelectric switch, and is also used for monitoring the passing situation of the cigarette rod, but can reflect the accumulation situation of the cigarette rod in the channel.

[0042] Status judgment step: The PLC controller makes a comprehensive judgment and analysis based on the cigarette rod flow rate signal, combined with the operation status signal of the case packing machine 7 and the status signal of the high-level cigarette rod storage device 2;

[0043] Flow rate control step: The PLC controller raises or lowers the priority of the high-level cigarette rod storage device 2 according to the result of the comprehensive judgment and analysis to control the high-level cigarette rod storage device 2 to store or release cigarette rods.

[0044] In the embodiment of the present utility model, as Figure 6 shown, the method for flexible conveying and warning of cigarette rods based on dynamic priority control further includes:

[0045] When the continuous occlusion time T1 of the first photoelectric switch ≥ t1, it indicates that the cigarette rod flow rate increases; at the same time, the second photoelectric switch signal is collected (that is, Figure 6in the photoelectric switch 2), when the continuous occlusion time T2 of the second photoelectric switch ≥ t2 and T1 ≥ t1, it indicates that not only is the flow rate of the cigarette rods in the conveying channel 4 large, but also the cigarette rods have accumulated to the position of the second photoelectric switch. In this case, the system elevates the priority of the high-level cigarette rod storage device 2 to make it start storing cigarette rods to relieve the flow pressure downstream. At the same time, interface display and audible and visual warnings are carried out through the upper monitoring device to remind the operator to pay attention;

[0046] If T2 ≥ t2 and T1 ≥ t1 are not both satisfied (for example, only T2 ≥ t2 while T1 < t1), then although the flow rate of the cigarette rods in the conveying channel 4 is large, they have not accumulated to the position of the second photoelectric switch. At this time, in this case, the system keeps the priority of the high-level cigarette rod storage device 2 unchanged and does not trigger its storage action to avoid unnecessary intervention;

[0047] When the continuous occlusion time T1 of the first photoelectric switch < t1, it indicates that the flow rate of the cigarette rods is at a normal level. In this case, the system reduces the priority of the high-level cigarette rod storage device 2 and triggers it to release the previously stored cigarette rods into the conveying channel 4 to maintain the balance and stability of the flow rate;

[0048] wherein, t1 and t2 are respectively the preset time thresholds for the first photoelectric switch and the second photoelectric switch to be continuously occluded.

[0049] Specifically, when the first photoelectric switch is continuously occluded for more than 5 seconds and the second photoelectric switch is not continuously occluded, it indicates that the flow rate of the cigarette rods in the conveying channel 4 has increased and the high-level cigarette rod storage device 2 does not act; when the first photoelectric switch is continuously occluded for more than 5 seconds and at the same time, the second photoelectric switch is continuously occluded for more than 3 seconds, it indicates that the flow rate of the cigarette rods in the conveying channel 4 is relatively large. At this time, the priority of the high-level cigarette rod storage device 2 is elevated and the high-level cigarette rod storage device 2 starts to store cigarette rods; when the second photoelectric switch is not continuously occluded and at the same time, the first photoelectric switch is continuously occluded for more than 5 seconds, at this time, the high-level cigarette rod storage device 2 does not act; when the second photoelectric switch is not continuously occluded and at the same time, the first photoelectric switch is not continuously occluded, at this time, the priority of the high-level cigarette rod storage device 2 is elevated and the high-level cigarette rod storage device 2 releases cigarette rods. Through the signals of the two photoelectric switches in the conveying channel 4, the dynamic monitoring of the flow rate of the cigarette rods in the conveying channel 4 is realized.

[0050] In the embodiment of the present utility model, as Figure 4As shown in the figure, the length, width, and height of the cigarette rod size are set as L, W, and h respectively. The time for a single cigarette rod to pass through the optical fiber is W / V, where V is the belt running speed, which is determined by the motor running speed and is a constant value. According to the mechanical position of the cigarette rod appearance detection device 5 and the actual production situation, the time thresholds for the first photoelectric switch and the second photoelectric switch to be continuously blocked are set as t1 and t2 respectively. These two values are set according to the actual production situation and the mechanical position and are used to judge whether the cigarette rod continuously and normally passes through the detection area. t1 is approximately the time for 5 cigarette rods to continuously pass through the optical fiber. Similarly, t2 is approximately the time for 3 cigarette rods to continuously pass through the optical fiber. t1 = 5W / V, which is approximately equal to the time for 5 cigarette rods to continuously pass through. t2 = 3W / V, which is approximately equal to the time for 3 cigarette rods to continuously pass through. By comparing the actually detected continuous passing time of the cigarette rod with the set time thresholds (t1 and t2), the production line can judge whether the flow of the cigarette rod is normal and whether there are problems such as blockage, missing, or abnormal speed. If the detected time exceeds or is lower than the threshold, the production line can automatically adjust or issue an alarm to ensure the continuity of production and the stability of product quality.

[0051] In the embodiment of the present invention, as Figure 5 shown, in the state judgment step, it further includes:

[0052] When the operation signal of the case packing machine 7 is collected, indicating that the case packing machine 7 is operating, it enters the judgment module of the PLC controller. In the judgment module, the cigarette rod flow information collected by the first photoelectric switch and the second photoelectric switch is used to judge the priority of the high-level cigarette rod storage device 2. According to different priorities, the high-level cigarette rod storage device 2 performs corresponding actions (stores or releases cigarette rods);

[0053] If the operation signal of the case packing machine 7 is not collected, indicating that the case packing machine 7 is not operating, at this time, it enters the judgment module of the PLC controller, and directly raises the priority of the high-level cigarette rod storage device 2 to make the high-level cigarette rod storage device 2 store cigarette rods.

[0054] Specifically, the priority of the high-level cigarette storage device 2 is adjusted according to the flow rate of the cigarette strip. The normal state (no action) of the high-level cigarette storage device 2 is 1, the storage state is 2, and the release state is 0. The flow rate of the cigarette strip is judged by the photoelectric switch to analyze the priority of the state of the high-level cigarette storage device 2, and then different actions of the high-level cigarette storage device 2 are realized to ensure the suitability of the cigarette strip flow rate in the conveying channel 4 and the flexible and stable conveying of the cigarette strip. Specifically, the status code of 1 indicates that the high-level cigarette storage device 2 is not performing any specific action at present, that is, it is neither storing nor releasing cigarette strips, but in a standby or idle state; the status code of 2 indicates that the high-level cigarette storage device 2 is receiving or storing cigarette strips from the upstream; the status code of 0 means that the high-level cigarette storage device 2 will release the previously stored cigarette strips into the downstream conveying channel 4 to supplement or adjust the flow rate of the cigarette strips. By dynamically adjusting the state of the high-level cigarette storage device 2, it is ensured that the flow rate of the cigarette strips in the conveying channel 4 always remains within an appropriate range, neither too much nor too little, so as to meet the requirements of the continuity and stability of the production line.

[0055] It should be noted that the information interaction, execution process, etc. between the above steps are based on the same concept as the system embodiment of the present application, and are methods corresponding to the cigarette strip flexible conveying and warning system based on the above dynamic priority control. All the implementation structures in the above system embodiment are applicable to the embodiment of this method. For its specific functions and the technical effects brought, please refer to the method embodiment part specifically, and will not be elaborated here.

[0056] In view of the problems that when the existing high-level cigarette storage device 2 releases cigarette strips, misdetection, rejection blockage and other faults occur in the appearance detection of the cigarette strips on the cigarette strip conveying channel 4 and there is no effective monitoring and coordinated linkage control, the present utility model realizes functions such as monitoring the cigarette strip flow rate in the conveying channel 4, dynamically controlling the storage or release of cigarette strips by the high-level cigarette storage device 2, and coordinating and linking with the cartoning machine 7, etc., to ensure that the flow rate of the cigarette strips in the conveying channel 4 remains at an appropriate level, avoiding blockage caused by excessive accumulation of cigarette strips or production stagnation caused by too little, thereby improving the conveying efficiency and stability of the entire production line, ensuring that the cigarette strips smoothly enter the cigarette strip appearance detection, and reducing the quality risk of the cigarette strips. The photoelectric switch is used to automatically collect the cigarette strip flow rate information, and combined with the preset time thresholds (t1, t2) for logical judgment, to realize the online real-time monitoring and control of the cigarette strip flow rate in the conveying channel 4, and eliminate the influence of sudden changes in the cigarette strip flow rate on the stability and effectiveness of the cigarette strip appearance detection. The time thresholds of t1 and t2 can be set according to different cigarette flow rates to realize the monitoring of the cigarette strip flow rate in different states, so that the system can be flexibly adjusted according to different production requirements, enhancing the adaptability and scalability of the system. The audible and visual warning reminder of a large cigarette strip flow rate can be realized through the upper interface, and at the same time, the priority of the high-level cigarette storage device 2 can be automatically increased for cigarette strip storage, which helps the operator to timely discover and handle potential production problems and ensure production safety.

[0057] The structure, features, and effects of the present utility model have been described in detail based on the embodiments shown in the drawings. However, the above are only the preferred embodiments of the present utility model. It should be noted that for the technical features involved in the above embodiments and their preferred modes, those skilled in the art can reasonably combine and match them into various equivalent solutions without departing from or changing the design concept and technical effects of the present utility model. Therefore, the scope of implementation of the present utility model is not limited by the drawings. Any changes made in accordance with the concept of the present utility model, or equivalent embodiments modified to equivalent changes, should still be within the protection scope of the present utility model as long as they do not exceed the spirit covered by the description and the drawings.

Claims

1. A tobacco rod flexible conveying and early warning system based on dynamic priority control, characterized in that: It comprises a PLC controller, a photoelectric coupler, a first photoelectric switch and a second photoelectric switch. The first photoelectric switch and the second photoelectric switch are both installed on the tobacco rod conveying channel through a mounting bracket. The photoelectric coupler and the PLC controller are both installed in a high-position tobacco rod storage device. The output ends of the first photoelectric switch and the second photoelectric switch are both connected to the input end of the PLC controller. The output end of the PLC controller is connected to the control end of the photoelectric coupler. The PLC controller is also connected to the upper monitoring device for communication; wherein: The first photoelectric switch and the second photoelectric switch monitor the flow of cigarette rods in the cigarette rod conveying channel, and the PLC controller makes a comprehensive judgment and analysis on the cigarette rod flow signal, the carton sealing machine operation status signal, and the high-level storage device status signal, raises or lowers the priority of the high-level storage device, and controls the high-level storage device to store or release cigarette rods.

2. The tobacco rod flexible conveying and warning system based on dynamic priority control according to claim 1 is characterized in that: The high-position rod storage device is installed at the entrance of the tobacco rod conveying channel, and the high-position rod storage device grabs or releases the tobacco rods on the tobacco rod conveying channel through a mechanical gripper.

3. The tobacco rod flexible conveying and warning system based on dynamic priority control according to claim 1 is characterized in that: A cigarette rod appearance detection device is also installed on the cigarette rod conveying channel, and the cigarette rod appearance detection device is arranged downstream of the high-position cigarette rod storage device.

4. The tobacco rod flexible conveying and warning system based on dynamic priority control according to claim 3 is characterized in that: The second photoelectric switch and the first photoelectric switch are installed in sequence along the conveying direction of the tobacco rod conveying channel and between the high-position tobacco rod storage device and the tobacco rod appearance detection device.

5. The tobacco rod flexible conveying and warning system based on dynamic priority control according to claim 3 is characterized in that: A rejecting mechanism is also installed on the tobacco rod conveying channel, and the rejecting mechanism is arranged downstream of the tobacco rod appearance detection device.

6. The tobacco rod flexible conveying and warning system based on dynamic priority control according to claim 1 is characterized in that: The upper monitoring device includes an alarm, which is connected to the PLC controller by signal. The PLC controller controls the alarm to give an audible and visual alarm when the tobacco rod flow is stagnant.

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