Method for flexibly conveying cigarette cartons

Abstract

The invention belongs to the technical field of cigarette production control, and particularly relates to a method for flexibly conveying cigarette cartons, which comprises the following steps of: determining a set threshold range of cigarette carton flow data in a cigarette carton conveying channel according to the optimal operation efficiency of a cigarette carton appearance detection device; in the running state of the carton sealing machine, the control module judges according to the real-time flow data, detected by the detection module, of the cigarette cartons in the cigarette carton conveying channel, if the real-time flow data of the cigarette cartons is within a set threshold value range, the high-position carton storage device keeps the current priority, and if the real-time flow data of the cigarette cartons is larger than the maximum value of the set threshold value range, the high-position carton storage device keeps the current priority. And if the real-time flow data of the cigarette cartons is smaller than the minimum value of the set threshold value, the priority of the high-position carton storage device is increased, and if the real-time flow data of the cigarette cartons is smaller than the minimum value of the set threshold value. According to the technical scheme, the intelligent level of the carton packaging and sealing production line is remarkably improved, the priority of the high-position carton storage device is dynamically adjusted, accurate control over the cigarette carton flow is achieved, it is ensured that the cigarette cartons stably enter an appearance detection area, and the cigarette carton product quality is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette production control, and in particular relates to a method for flexible transportation of cigarette rods. Background Art

[0002] In modern tobacco production lines, finished tobacco rods are transported to the carton sealing machine via the packaging machine, rod lifting machine, and high-position rod storage device. The high-position rod storage device serves as a buffer device to effectively store tobacco rods when the carton sealing machine stops, ensuring the continuity of production. However, in the actual production process, due to the poor coordination between the high-position rod storage device and the carton sealing machine and the appearance inspection system, it is easy to cause problems such as tobacco rods being connected, frequent mis-rejection during appearance inspection, and blockage of the rejection mechanism, which affects production efficiency.

[0003] like Figure 1 The figure shows the distribution diagram of each detection device in the tobacco rod conveying channel. The finished tobacco rods produced by the packaging machine enter the tobacco rod conveying channel 3 from the conveying chain plate 1, and finally enter the carton sealing machine 6 for box packaging. At the entrance of the carton sealing machine conveying channel, a high-level tobacco rod storage device 2 is installed; at the same time, on the tobacco rod conveying channel 3, a tobacco rod appearance detection device 4 and a defective product rejection mechanism 5 are installed, which are used to perform online quality inspection of the appearance quality of the tobacco rods and reject defective products. The finished tobacco rods with qualified appearance quality are boxed in the carton sealing machine 6.

[0004] In the above production process, the cigarette rod appearance detection device 4, the high-position cigarette rod storage device 2, and the carton sealing machine 6 are independent device systems. When the high-position cigarette rod storage device 2 releases the cigarette rods, a large number of cigarette rods enter the cigarette rod appearance detection area 4 from the height H under the action of the belt and inertia, which can easily cause the cigarette rods to be connected, resulting in misdetection by the cigarette rod appearance detection device 4. The misdetection rate of the cigarette rod appearance detection device 4 is as high as 20% due to the phenomenon of cigarette rods being connected in the cigarette rod conveying channel 3, which in turn causes the rejection mechanism 5 to continuously reject, resulting in blockage, cigarette rod damage and other faults. Not only does it increase energy consumption and downtime, and affect the continuity and stability of the overall production line of the carton sealing equipment, it may also cause unqualified cigarette rods to flow into the next process, damaging the brand image. Summary of the invention

[0005] The object of the present invention is to provide a method for flexibly conveying tobacco rods to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above objectives, this application is implemented through the following technical solutions:

[0007] A method for flexible conveying of cigarette rods, comprising the following steps:

[0008] S1. Determine a set threshold range of the flow rate data of the cigarette rods in the cigarette rod conveying channel according to the optimal operating efficiency of the cigarette rod appearance detection device;

[0009] S2, when the carton sealing machine is in operation, the control module makes a judgment based on the instant flow data of the cigarette rods in the cigarette rod conveying channel detected by the detection module. If the instant flow data of the cigarette rods is within the set threshold range, the high-level storage device maintains the current priority. Otherwise, it goes to step S3;

[0010] S3. If the instantaneous flow data of the cigarette rod is greater than the maximum value of the set threshold range, the priority of the high-level storage device is lowered and the release of cigarette rods from the high-level storage device is suspended. If the instantaneous flow data of the cigarette rod is less than the minimum value of the set threshold, the priority of the high-level storage device is increased, and the high-level storage device releases the cigarette rods into the cigarette conveying channel in a timely manner.

[0011] Furthermore, in step S2, when the carton sealing machine is not in operation, the priority of the high-position cigarette rod storage device is increased, and the cigarette rods are stored in the high-position cigarette rod storage device.

[0012] Furthermore, in step S2, if the instantaneous flow data of the cigarette rods is within the set threshold range, the high-position cigarette rod storage device maintains the current priority, and the operation of the high-position cigarette rod storage device is controlled by the original cigarette making machine's own program.

[0013] Furthermore, in step S2, the detection module includes a first photoelectric switch and a second photoelectric switch arranged on the cigarette rod conveying channel, the first photoelectric switch is arranged at the cigarette rod conveying channel near the entrance of the cigarette rod appearance detection device, and the second photoelectric switch is arranged at the cigarette rod conveying channel near the exit of the high-level storage device.

[0014] Furthermore, the first photoelectric switch and the second photoelectric switch are arranged on the bottom plate of the tobacco rod conveying channel.

[0015] Furthermore, in step S2, the real-time flow data of the cigarette rod in the cigarette rod conveying channel detected by the detection module adopts the following steps:

[0016] S21, the first photoelectric switch collects the first photoelectric signal. If the first photoelectric signal is ≥ the first set threshold, it is determined that the cigarette flow rate has increased, and the process goes to step S22; otherwise, it is determined that the cigarette flow rate is within the set range, and the process goes to step S23;

[0017] S22, the second photoelectric switch collects the second photoelectric signal, and if the second photoelectric signal is ≥ the second set threshold, it is determined that the cigarette flow rate data is greater than the maximum value of the set threshold range; otherwise, it is determined that the cigarette flow rate is within the set threshold range;

[0018] S23. If the second photoelectric signal is less than the second set threshold, it is determined that the tobacco flow rate is lower than the lowest value of the set threshold range.

[0019] Furthermore, the first set threshold is greater than the second set threshold.

[0020] Furthermore, it includes a flexible tobacco rod conveying device, including a high-level tobacco rod storage device, the outlet of the high-level tobacco rod storage device is connected to the inlet of the packaging machine through a tobacco rod conveying channel, a tobacco rod appearance detection device is arranged on the tobacco rod conveying channel between the high-level tobacco rod storage device and the packaging machine, a rejection mechanism is arranged at the outlet of the tobacco rod appearance detection device, a first photoelectric switch is arranged at the tobacco rod conveying channel near the inlet of the tobacco rod appearance detection device, and a second photoelectric switch is arranged at the tobacco rod conveying channel near the outlet of the high-level tobacco rod storage device; the first photoelectric switch, the second photoelectric switch and the rejection mechanism are all connected to the PLC controller with electrical signals.

[0021] The beneficial effects of the present invention are:

[0022] This technical solution is expected to significantly improve the intelligence level of the box filling and sealing production line. By dynamically adjusting the priority of the high-level cigarette rod storage device, it can achieve precise control of the cigarette rod flow rate, ensure that the cigarette rods enter the appearance inspection area smoothly, and significantly improve the quality of cigarette rod products.

[0023] The innovation of this technical solution lies in the realization of the coordinated linkage between the carton filling and sealing machine, the high-level cigarette stick storage device and the cigarette stick appearance inspection device, which breaks the isolation between traditional equipment and improves the overall production efficiency.

[0024] This technical solution can flexibly respond to different production needs, reduce manual intervention, lower production costs, and bring significant economic and social benefits to tobacco companies. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the current flexible tobacco rod conveying device.

[0026] Figure 2 It is a schematic diagram of the flexible tobacco rod conveying device of the present invention.

[0027] Figure 3 This is a judgment logic diagram of the method for flexible tobacco rod conveying of the present invention.

[0028] Figure 4 It is the logic for judging the flow and priority of cigarette strips.

[0029] Description of reference numerals:

[0030] 1. Conveying chain plate; 2. High-position cigarette rod storage device; 3. Cigarette rod conveying channel; 4. Cigarette rod appearance detection device; 5. Rejection mechanism; 6. Carton sealing machine; 7. Second photoelectric switch; 8. First photoelectric switch. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0032] like Figure 2 As shown, the present application provides a flexible tobacco conveying device, the finished tobacco rods produced by the packaging machine enter the tobacco rod conveying channel 3 of the carton sealing machine 6 from the conveying chain plate 1, including a high-level tobacco rod storage device 2, the outlet of the high-level tobacco rod storage device is connected to the inlet of the packaging machine through the tobacco rod conveying channel, a tobacco rod appearance detection device 4 is arranged on the tobacco rod conveying channel between the high-level tobacco rod storage device and the packaging machine, a rejection mechanism 5 is arranged at the outlet of the tobacco rod appearance detection device, a first photoelectric switch 8 is arranged near the inlet of the tobacco rod appearance detection device in the tobacco rod conveying channel, and a second photoelectric switch 7 is arranged near the outlet of the high-level tobacco rod storage device in the tobacco rod conveying channel; the first photoelectric switch 8, the second photoelectric switch 7, and the rejection mechanism 5 are all connected to the PLC controller with electrical signals.

[0033] In the present application, the first photoelectric switch and the second photoelectric switch are arranged in the tobacco rod conveying channel to obtain the tobacco rod flow data in the conveying channel in real time. The PLC controller, the optical coupler coordinated with the first photoelectric switch and the second photoelectric switch, etc. are all installed in the electrical cabinet of the high-position accumulator, and the entire control system does not affect the stable operation of the original equipment.

[0034] In general, the technical solution of the present application determines the priority control port layout through the electric control system of the high-level storage rod, and judges the data of the tobacco rod flow in the tobacco rod conveying channel through the information collected by the photoelectric switch. The judgment module of the present application is controlled by a PLC controller. During the peak period of tobacco rod flow, the priority of the high-level storage rod is lowered, the release of tobacco rods is suspended, and the mode is switched to storage mode to ensure that the tobacco rods pass smoothly through the tobacco rod appearance detection device to avoid mis-rejection and blockage. During the moderate period of tobacco rod flow, the current high-level storage rod priority setting is maintained, and the high-level storage rod action is controlled only by the original machine's own program. During the trough period of tobacco rod flow, the priority of the high-level storage rod is increased, and the tobacco rods are released into the tobacco rod conveying channel in a timely manner to maintain continuous production. The tobacco rod flow information is collected by the photoelectric switch to control the priority of the high-level storage rod.

[0035] like Figure 3 As shown, the present application provides a method for flexible delivery of tobacco rods, which adopts the following steps:

[0036] S1. Determine a set threshold range for the flow rate data of cigarette rods in the cigarette rod conveying channel according to the optimal operating efficiency of the cigarette rod appearance detection device. The threshold range can be determined according to historical data or through repeated experiments or other existing technical methods.

[0037] S2. When the carton sealing machine is in operation, the logic process of the prerequisite judgment of the carton sealing machine operation signal is as follows: when the carton sealing machine operation signal is collected, it indicates that the carton sealing machine is running, and the judgment module of the PLC controller is entered at this time; the control module makes a judgment based on the real-time flow data of the cigarette rods in the cigarette rod conveying channel detected by the detection module; if the real-time flow data of the cigarette rods is within the set threshold range, the high-level storage device maintains the current priority; otherwise, it enters step S3.

[0038] In this step, when the carton sealing machine is not in operation, the priority of the high-position cigarette rod storage device is increased, and the high-position cigarette rod storage device stores cigarette rods.

[0039] S3. If the instantaneous flow data of the cigarette rod is greater than the maximum value of the set threshold range, the priority of the high-level storage device is lowered and the release of cigarette rods from the high-level storage device is suspended. If the instantaneous flow data of the cigarette rod is less than the minimum value of the set threshold, the priority of the high-level storage device is increased, and the high-level storage device releases the cigarette rods into the cigarette conveying channel in a timely manner.

[0040] like Figure 4 As shown, in the present application, in step S2, the detection module detects the instantaneous flow data of the cigarette rod in the cigarette rod conveying channel using the following steps:

[0041] S21, the first photoelectric switch collects the first photoelectric signal T1, if the first photoelectric signal T1 ≥ the first set threshold t1, it is determined that the cigarette flow rate has increased, and the process goes to step S22; otherwise, it is determined that the cigarette flow rate is within the set range, and the process goes to step S23;

[0042] S22. The second photoelectric switch collects the second photoelectric signal T2. If the second photoelectric signal T2 ≥ the second set threshold t2, it is determined that the cigarette flow data is greater than the maximum value of the set threshold range. At this time, the priority of the high-level storage device should be increased, and the high-level storage device stores cigarettes. Otherwise, it is determined that the cigarette flow is within the set threshold range, even if the first photoelectric signal T1 ≥ the first set threshold t1 and the second photoelectric signal T2 ≥ the second set threshold t2 are different, indicating that even if the cigarette flow is large, it is not fully accumulated. At this time, the priority of the high-level storage device remains unchanged, and the high-level storage device does not operate.

[0043] S23. If the second photoelectric signal T2 is less than the second set threshold value t2, it is determined that the tobacco rod flow rate is lower than the lowest value of the set threshold range. At this time, the priority of the high-level storage device is reduced, and the high-level storage device starts to release tobacco rods into the tobacco rod conveying channel.

[0044] In the present application, the first set threshold is greater than the second set threshold, and the first set threshold and the second set threshold are different from the set threshold range of step S1.

[0045] The priority of the high-position hopper is adjusted according to the size of the cigarette rod flow rate. The normal state (no action) of the high-position hopper is 1, the storage state is 2, and the release state is 0. The cigarette rod flow rate is judged by the photoelectric switch to analyze the priority of the high-position hopper state, and then different actions of the high-position hopper are realized to ensure the suitability of the cigarette rod flow rate in the conveying channel and the flexible and smooth conveying of the cigarette rods.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for flexible transportation of tobacco rods, characterized in that: Use the following steps: S1. Determine a set threshold range of the flow rate data of the cigarette rods in the cigarette rod conveying channel according to the optimal operating efficiency of the cigarette rod appearance detection device; S2, when the carton sealing machine is in operation, the control module makes a judgment based on the instant flow data of the cigarette rods in the cigarette rod conveying channel detected by the detection module. If the instant flow data of the cigarette rods is within the set threshold range, the high-level storage device maintains the current priority. Otherwise, it goes to step S3; S3. If the instantaneous flow data of the cigarette rod is greater than the maximum value of the set threshold range, the priority of the high-level storage device is lowered and the release of cigarette rods from the high-level storage device is suspended. If the instantaneous flow data of the cigarette rod is less than the minimum value of the set threshold, the priority of the high-level storage device is increased, and the high-level storage device releases the cigarette rods into the cigarette conveying channel in a timely manner.

2. The method for flexible transportation of tobacco rods according to claim 1, characterized in that: In step S2, the carton sealing machine is not in operation, the priority of the high-position cigarette rod storage device is increased, and the high-position cigarette rod storage device stores cigarette rods.

3. The method for flexible transportation of tobacco rods according to claim 1, characterized in that: In step S2, if the instantaneous flow data of the cigarette rods is within the set threshold range, the high-position cigarette rod storage device maintains the current priority, and the operation of the high-position cigarette rod storage device is controlled by the original cigarette making machine's own program.

4. The method for flexible transportation of tobacco rods according to claim 1, characterized in that: In step S2, the detection module includes a first photoelectric switch and a second photoelectric switch arranged on the cigarette rod conveying channel, the first photoelectric switch is arranged at the cigarette rod conveying channel near the entrance of the cigarette rod appearance detection device, and the second photoelectric switch is arranged at the cigarette rod conveying channel near the exit of the high-level storage device.

5. The method for flexible transportation of tobacco rods according to claim 4, characterized in that: The first photoelectric switch and the second photoelectric switch are arranged on the bottom plate of the tobacco rod conveying channel.

6. The method for flexible transportation of tobacco rods according to claim 4, characterized in that: In step S2, the real-time flow data of the cigarette rod in the cigarette rod conveying channel detected by the detection module adopts the following steps: S21, the first photoelectric switch collects the first photoelectric signal. If the first photoelectric signal is ≥ the first set threshold, it is determined that the cigarette flow rate has increased, and the process goes to step S22; otherwise, it is determined that the cigarette flow rate is within the set range, and the process goes to step S23; S22, the second photoelectric switch collects the second photoelectric signal, and if the second photoelectric signal is ≥ the second set threshold, it is determined that the cigarette flow rate data is greater than the maximum value of the set threshold range; otherwise, it is determined that the cigarette flow rate is within the set threshold range; S23. If the second photoelectric signal is less than the second set threshold, it is determined that the tobacco flow rate is lower than the lowest value of the set threshold range.

7. The method for flexible transportation of tobacco rods according to claim 6, characterized in that: The first set threshold is greater than the second set threshold.

8. The method for flexible transportation of tobacco rods according to claim 1, characterized in that: It comprises a flexible tobacco rod conveying device, including a high-position tobacco rod storage device, the outlet of the high-position tobacco rod storage device is connected with the inlet of the packaging machine through a tobacco rod conveying channel, a tobacco rod appearance detection device is arranged on the tobacco rod conveying channel between the high-position tobacco rod storage device and the packaging machine, a rejection mechanism is arranged at the outlet of the tobacco rod appearance detection device, a first photoelectric switch is arranged at the tobacco rod conveying channel near the inlet of the tobacco rod appearance detection device, and a second photoelectric switch is arranged at the tobacco rod conveying channel near the outlet of the high-position tobacco rod storage device; the first photoelectric switch, the second photoelectric switch and the rejection mechanism are all connected with the PLC controller by electrical signals.

Images