A method and device for controlling the extraction of tobacco stems in a tobacco stem conveying device of a cigarette making machine

Abstract

The present application discloses a method and device for controlling the extraction of tobacco stems in a tobacco stem conveying device of a cigarette making machine. When it is determined that a sampling operation is to be performed on the tobacco stems, a pressing operation is obtained based on an extraction control button; a high-level signal is output to a first relay based on both ends of a power supply, and a high-level signal is output to a second relay based on both ends of the power supply; a high-level signal is output to a sampling valve based on both ends of the power supply; a high-level signal is output to a circuit where a third relay and a second normally open contact of the second relay are located based on both ends of the power supply; a high-level signal is output to a circuit where a make-up air valve and a normally open contact of the third relay are located based on both ends of the power supply. The extraction operation of the tobacco stems is obtained through the extraction control button, and the automatic sampling of the tobacco stems is realized by combining multiple relays and corresponding normally open contacts, without manual operation of switching valves, thereby improving the overall processing efficiency of the tobacco stems.

Description

Technical Field

[0001] This application belongs to the technical field of cigarette machinery and equipment, and particularly relates to a method and device for controlling the extraction of tobacco stems in a tobacco stem conveying device of a cigarette machine. Background Art

[0002] Currently, a large number of cigarette manufacturing enterprises have built a centralized pneumatic conveying system for tobacco stems. The main principle of this system is to use a dust removal fan to generate a large flow of high-speed air, which is connected to the internal tobacco stem removal device of the equipment through pipelines to suck and centrally process tobacco stems by means of pneumatic conveying.

[0003] In the actual application process, in order to prevent tobacco stems from entering the cigarette manufacturing process, it is necessary to regularly sample and weigh the amount of tobacco stems removed. When processing, it is necessary to manually close multiple groups of valves, which is rather cumbersome in operation. Moreover, when the operation is improper, it is easy to cause tobacco stem blockage faults, thereby affecting the efficiency of tobacco stem processing. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems such as regularly sampling and weighing the amount of tobacco stems removed, manually closing multiple groups of valves during processing, which is rather cumbersome in operation, and easy to cause tobacco stem blockage faults when the operation is improper, thereby affecting the efficiency of tobacco stem processing, this application proposes a method and device for controlling the extraction of tobacco stems in a tobacco stem conveying device of a cigarette machine. The technical solutions are as follows:

[0005] In a first aspect, an embodiment of this application provides a method for controlling the extraction of tobacco stems in a tobacco stem conveying device of a cigarette machine. The tobacco stem conveying device includes a tobacco stem input channel, a first output channel, and a second output channel. The method is applied to an extraction control system, which includes a sampling valve, a make-up air valve, an extraction control button, a first relay, a second relay, and a third relay. The sampling valve is arranged between the tobacco stem input channel and the second output channel, the make-up air valve is arranged on the tobacco stem input channel, the normally open contact of the extraction control button and the first relay are arranged between the two ends of the power supply, the normally open contact of the first relay and the second relay are arranged between the two ends of the power supply, the first normally open contact of the second relay and the sampling valve are arranged between the two ends of the power supply, the second normally open contact of the second relay and the third relay are arranged between the two ends of the power supply, and the normally open contact of the third relay and the make-up air valve are arranged between the two ends of the power supply. The method includes:

[0006] When it is determined that a sampling operation is to be performed on the tobacco stems, a pressing operation is obtained based on the extraction control button, so that the normally open contact of the extraction control button is converted from an off state to a conducting state;

[0007] Output a high-level signal from both ends of the power supply to the circuit where the normally open contact of the first relay and the stem-taking control button is located, so that the normally open contact of the first relay is switched from the open state to the conducting state, and output a high-level signal from both ends of the power supply to the circuit where the second relay and the normally open contact of the first relay are located, so that both the first normally open contact and the second normally open contact of the second relay are switched from the open state to the conducting state;

[0008] Output a high-level signal from both ends of the power supply to the circuit where the sampling valve and the first normally open contact of the second relay are located, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel;

[0009] Output a high-level signal from both ends of the power supply to the circuit where the third relay and the second normally open contact of the second relay are located, so that the normally open contact of the third relay is switched from the open state to the conducting state;

[0010] Output a high-level signal from both ends of the power supply to the circuit where the air supply valve and the normally open contact of the third relay are located, so that the air supply valve blows the tobacco stems in the tobacco stem input channel out from the second output channel, and the tobacco stem collection box arranged at the outlet of the second output channel samples and weighs the tobacco stems.

[0011] In an alternative solution of the first aspect, before determining to perform a sampling operation on the tobacco stems, it further includes:

[0012] Obtain the blowing speed in the first output channel at a preset time interval, and when it is detected that the blowing speed is within a preset speed range, obtain the tobacco stem weights corresponding to the first output channel at at least three moments;

[0013] Draw a time-weight curve according to the tobacco stem weight corresponding to each moment and all moments, and judge whether to perform a sampling operation on the tobacco stems according to the time-weight curve.

[0014] In another alternative solution of the first aspect, judging whether to perform a sampling operation on the tobacco stems according to the time-weight curve includes:

[0015] Determine at least three time-weight coordinates from the time-weight curve, and plan a first linear curve according to all the time-weight coordinates; wherein, the sum of the straight-line distances between the first linear curve and each time-weight coordinate is the smallest;

[0016] When it is detected that the slope of the first linear curve is consistent with the slope of the preset linear curve, determine to perform a sampling operation on the tobacco stems.

[0017] In another alternative solution of the first aspect, after planning the first linear curve according to all the time-weight coordinates, it further includes:

[0018] When it is detected that the slope of the first linear curve is inconsistent with the slope of the preset curve, the moment weight coordinate with the farthest straight-line distance from the first linear curve is removed from all moment weight coordinates;

[0019] A second linear curve is planned according to the remaining all moment weight coordinates; wherein, the sum of the straight-line distances between the second linear curve and each moment weight coordinate is the smallest;

[0020] When it is detected that the slope of the second linear curve is consistent with the slope of the preset linear curve, it is determined to perform a sampling operation on the tobacco stems.

[0021] In another alternative solution of the first aspect, the stem-taking control system further includes a pressure sensor and a fourth relay. The pressure sensor is arranged on the first output channel, the pressure sensor is arranged between the two ends of the power supply, the fourth relay is arranged between one end of the power supply and the pressure sensor, the first normally closed contact of the fourth relay is arranged at both ends of the normally open contact of the stem-taking control button, and the second normally closed contact of the fourth relay is arranged at both ends of the second normally open contact of the second relay.

[0022] In another alternative solution of the first aspect, after outputting a high-level signal from both ends of the power supply to the circuit where the air supply valve and the normally open contact of the third relay are located, it further includes:

[0023] Obtain the air pressure data in the first output channel based on the pressure sensor;

[0024] When it is detected that the air pressure data is lower than the preset standard air pressure, output a high-level signal to the fourth relay based on the pressure sensor and one end of the power supply, so that both the first normally closed contact and the second normally closed contact of the fourth relay are converted from the off state to the on state;

[0025] Output a high-level signal from both ends of the power supply to the circuit where the first normally closed contact of the fourth relay and the second relay are located, so that both the first normally open contact and the second normally open contact of the second relay are converted from the off state to the on state;

[0026] Output a high-level signal from both ends of the power supply to the circuit where the sampling valve and the first normally open contact of the second relay are located, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel.

[0027] In another alternative solution of the first aspect, after outputting a high-level signal from both ends of the power supply to the circuit where the first normally closed contact of the fourth relay and the second relay are located, it further includes:

[0028] Output a high-level signal from both ends of the power supply to the circuit where the second normally closed contact of the fourth relay and the third relay are located, so that the normally open contact of the third relay is converted from the off state to the on state;

[0029] Based on the power supply terminals outputting a high-level signal to the air supply valve and the circuit where the normally open contact of the third relay is located, so that the air supply valve blows out the tobacco stems in the tobacco stem input channel from the second output channel.

[0030] In a second aspect, an embodiment of the present application provides a stem-taking control device for a tobacco stem conveying device of a cigarette making machine. The tobacco stem conveying device includes a tobacco stem input channel, a first output channel, and a second output channel. The device is applied to a stem-taking control system, which includes a sampling valve, an air supply valve, a stem-taking control button, a first relay, a second relay, and a third relay. The sampling valve is arranged between the tobacco stem input channel and the second output channel. The air supply valve is arranged on the tobacco stem input channel. The normally open contact of the stem-taking control button and the first relay are arranged between the power supply terminals. The normally open contact of the first relay and the second relay are arranged between the power supply terminals. The first normally open contact of the second relay and the sampling valve are arranged between the power supply terminals. The second normally open contact of the second relay and the third relay are arranged between the power supply terminals. The normally open contact of the third relay and the air supply valve are arranged between the power supply terminals. The device includes:

[0031] A first processing module, configured to, when it is determined that a sampling operation is performed on the tobacco stems, obtain a pressing operation based on the stem-taking control button, so that the normally open contact of the stem-taking control button is changed from an off state to a conducting state;

[0032] A second processing module, configured to output a high-level signal to the circuit where the first relay and the normally open contact of the stem-taking control button are located based on the power supply terminals, so that the normally open contact of the first relay is changed from an off state to a conducting state, and output a high-level signal to the circuit where the second relay and the normally open contact of the first relay are located based on the power supply terminals, so that both the first normally open contact and the second normally open contact of the second relay are changed from an off state to a conducting state;

[0033] A third processing module, configured to output a high-level signal to the circuit where the sampling valve and the first normally open contact of the second relay are located based on the power supply terminals, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel;

[0034] A fourth processing module, configured to output a high-level signal to the circuit where the third relay and the second normally open contact of the second relay are located based on the power supply terminals, so that the normally open contact of the third relay is changed from an off state to a conducting state;

[0035] A fifth processing module, configured to output a high-level signal to the circuit where the air supply valve and the normally open contact of the third relay are located based on the power supply terminals, so that the air supply valve blows out the tobacco stems in the tobacco stem input channel from the second output channel, and the tobacco stems are sampled and weighed by a tobacco stem collection box arranged at the outlet of the second output channel.

[0036] In a third aspect, an embodiment of the present application further provides a stem-taking control device for a cigarette stem conveying device of a cigarette-making machine, including a processor and a memory;

[0037] The processor is connected to the memory;

[0038] The memory is used to store executable program code;

[0039] The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the stem-taking control method for the cigarette stem conveying device provided in the first aspect or any implementation manner of the first aspect of the embodiment of the present application.

[0040] In a fourth aspect, an embodiment of the present application provides a computer storage medium, which stores a computer program. The computer program includes program instructions. When the program instructions are executed by a processor, the stem-taking control method for the cigarette stem conveying device provided in the first aspect or any implementation manner of the first aspect of the embodiment of the present application can be implemented.

[0041] In the embodiment of the present application, when performing stem-taking control on the cigarette stem conveying device of the cigarette-making machine, when it is determined that a sampling operation is performed on the cigarette stem, a pressing operation is obtained based on the stem-taking control button, so that the normally open contact of the stem-taking control button changes from the off state to the on state; a high-level signal is output to the circuit where the first relay and the normally open contact of the stem-taking control button are located based on both ends of the power supply, so that the normally open contact of the first relay changes from the off state to the on state, and a high-level signal is output to the circuit where the second relay and the normally open contact of the first relay are located based on both ends of the power supply, so that both the first normally open contact and the second normally open contact of the second relay change from the off state to the on state; a high-level signal is output to the circuit where the sampling valve and the first normally open contact of the second relay are located based on both ends of the power supply, so that the sampling valve conducts the channel between the cigarette stem input channel and the second output channel; a high-level signal is output to the circuit where the third relay and the second normally open contact of the second relay are located based on both ends of the power supply, so that the normally open contact of the third relay changes from the off state to the on state; a high-level signal is output to the circuit where the air supply replenishing valve and the normally open contact of the third relay are located based on both ends of the power supply, so that the air supply replenishing valve blows the cigarette stems in the cigarette stem input channel out from the second output channel, and the cigarette stems are sampled and weighed by a cigarette stem collection box arranged at the outlet of the second output channel. The stem-taking operation of the cigarette stem is obtained through the stem-taking control button, and the automatic sampling of the cigarette stem is realized by combining multiple relays and corresponding normally open contacts, without manual operation to switch valves, thereby improving the overall processing efficiency of the cigarette stems. Description of the Drawings

[0042] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0043] Figure 1 It is the overall flowchart of a method for controlling the stem picking of a stem conveying device for a cigarette making machine provided by an embodiment of the present application;

[0044] Figure 2 It is the structural schematic diagram of a stem conveying device provided by an embodiment of the present application;

[0045] Figure 3 It is the connection schematic diagram of a stem picking control circuit provided by an embodiment of the present application;

[0046] Figure 4 It is the structural schematic diagram of a stem picking control device for a stem conveying device of a cigarette making machine provided by an embodiment of the present application;

[0047] Figure 5 It is the structural schematic diagram of another stem picking control device for a stem conveying device of a cigarette making machine provided by an embodiment of the present application. Specific embodiments

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application.

[0049] In the following description, the terms "first" and "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance. The following description provides multiple embodiments of the present application. Different embodiments can be replaced or combined. Therefore, the present application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then the present application should also be considered to include embodiments containing all other possible combinations of A, B, C, and D, even though such embodiments may not be explicitly described in the following content.

[0050] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes can be made to the functions and arrangements of the described elements without departing from the scope of the content of the present application. Each example can appropriately omit, substitute, or add various processes or components. For example, the described method can be executed in a different order from the described order, and various steps can be added, omitted, or combined. In addition, the features described in some examples can be combined into other examples.

[0051] Please refer to Figure 1 , Figure 1 which shows the overall flowchart of a stem-taking control method for a stem conveying device of a cigarette making machine provided by an embodiment of the present application.

[0052] As Figure 1 shown, the stem-taking control method for the stem conveying device of the cigarette making machine may at least include the following steps:

[0053] Step 102, when it is determined that a sampling operation is to be performed on the stem, obtain a pressing operation based on the stem-taking control button, so that the normally open contact of the stem-taking control button changes from the off state to the on state.

[0054] In the embodiment of the present application, the stem-taking control method for the stem conveying device of the cigarette making machine may be but is not limited to being applied to a stem-taking control system. The stem-taking control system can transfer the stem to a stem collection box through the control of multiple relays on the stem conveying device of the cigarette making machine to achieve automatic sampling of the stem. Among them, the above-mentioned stem conveying device may at least include a stem input channel, a first output channel, and a second output channel. The stem input channel can be used to suck the stem in the cigarette making machine out of the cigarette making machine by using the high-speed air flow generated by the air flow conveying system, and discharge the stem into the centralized air flow conveying system through the first output channel under normal working conditions. The second output channel can be used to suck the stem from the stem input channel and output it to the stem collection box when it is necessary to perform timed sampling on the stem.

[0055] Here, the stem-taking control system may at least include a sampling valve and a make-up air valve. Among them, the sampling valve is arranged between the stem input channel and the second output channel to make the channel between the stem input channel and the second output channel conductive when it is necessary to perform timed sampling on the stem, so as to facilitate the stem to flow from the stem input channel into the second output channel. The make-up air valve is arranged on the stem input channel to generate a high-speed air flow when it is necessary to perform timed sampling on the stem, so that the stem can be better discharged to the stem collection box.

[0056] Please refer to Figure 2 , Figure 2 which shows the structural schematic diagram of a stem conveying device provided by an embodiment of the present application.

[0057] As Figure 2As shown, the tobacco stem conveying device may include a tobacco stem input channel 10, a first output channel 20, a second output channel 30, a sampling valve 40, an air supply valve 50, a tobacco stem collection box 60, and a pressure sensor 70. It can be seen that when the tobacco stem conveying device is operating normally, the high-speed air flow generated by the air flow conveying system can suck the tobacco stems in the cigarette making machine out of the cigarette making machine and discharge the tobacco stems into the centralized air flow conveying system through the first output channel; when it is necessary to take a timed sample of the tobacco stems, the channel between the tobacco stem input channel and the second output channel can be first conducted through the sampling valve, and then the high-speed air flow generated by the air supply valve in the tobacco stem input channel can be used to enable the tobacco stems to be better discharged from the second output channel to the tobacco stem collection box. It can be understood that the pressure sensor is arranged in the first output channel and can be used to judge whether there is a risk of channel blockage in the first output channel.

[0058] It can be understood that the above-mentioned stem extraction control system may also include a stem extraction control button, a first relay, a second relay and a third relay, wherein the normally open contact of the stem extraction control button and the first relay are arranged between the two ends of the power supply, so that when the stem extraction control button does not receive a high-level signal, the normally open contact of the stem extraction control button and the circuit where the first relay is located are in an open circuit state; and when the stem extraction control button receives a high-level signal, the normally open contact of the stem extraction control button and the circuit where the first relay is located are in a connected state, that is, the power supply can output a high-level signal to the first relay. The normally open contact of the first relay and the second relay are arranged between the two ends of the power supply, so that when the first relay does not receive a high-level signal, the normally open contact of the first relay and the circuit where the second relay is located are in an open circuit state; and when the first relay receives a high-level signal, the normally open contact of the first relay and the circuit where the second relay is located are in a connected state, that is, the power supply can output a high-level signal to the second relay. The first normally open contact of the second relay and the sampling valve are arranged between the two ends of the power supply, so that when the second relay does not receive a high-level signal, the first normally open contact of the second relay and the circuit where the sampling valve is located are in an open circuit state; and when the second relay receives a high-level signal, the first normally open contact of the second relay and the circuit where the sampling valve is located are in a connected state, that is, the power supply can output an electrical signal to the sampling valve, so that the sampling valve can conduct the channel between the tobacco stem input channel and the second output channel. The second normally open contact of the second relay and the third relay are arranged between the two ends of the power supply, so that when the second relay does not receive a high-level signal, the second normally open contact of the second relay and the circuit where the third relay is located are in an open circuit state; and when the second relay receives a high-level signal, the second normally open contact of the second relay and the third relay are in a connected state, that is, the power supply can output a high-level signal to the third relay. The normally open contact of the third relay and the air supply valve are arranged between the two ends of the power supply, so that when the third relay does not receive a high-level signal, the normally open contact of the third relay and the circuit where the air supply valve is located are in an open-circuit state; and when the third relay receives a high-level signal, the normally open contact of the third relay and the circuit where the air supply valve is located are in a closed state, that is, the power supply can output an electrical signal to the air supply valve, so that the air supply valve can generate a high-speed airflow in the tobacco stem input channel.

[0059] Specifically, when performing stem-taking control on the stem conveying device of a cigarette-making machine, when it is determined that a sampling operation needs to be performed on the tobacco stems, a pressing operation of the user is obtained based on the stem-taking control button. The pressing operation of the user can make the circuit where the stem-taking control button is located in a conducting state, that is, a high-level signal can be output from the power supply to the stem-taking control button. Here, the stem-taking control button can, but is not limited to, be set at both ends of the power supply with the first relay, and when the stem-taking control button receives a high-level signal, it will not have any impact on the first relay (but the normally open contact of the stem-taking control button will have an impact on the first relay).

[0060] It can be understood that when the power supply outputs a high-level signal to the stem-taking control button, the normally open contact of the stem-taking control button changes from the open state to the conducting state, and the normally open contact of the stem-taking control button can remain in the open state when the stem-taking control button does not receive a high-level signal.

[0061] It should be noted that in the embodiment of the present application, the method for determining whether to perform a sampling operation on the tobacco stems can, but is not limited to, be obtained by analyzing and processing the collected data through a preset automatic control program, or can also be judged manually according to experience, and is not limited thereto.

[0062] As an option in the embodiment of the present application, before determining to perform a sampling operation on the tobacco stems, it further includes:

[0063] Obtain the blowing speed in the first output channel at preset time intervals, and when it is detected that the blowing speed is within a preset speed range, obtain the tobacco stem weights corresponding to the first output channel at at least three moments;

[0064] Draw a time-weight curve based on the tobacco stem weights corresponding to each moment and all moments, and judge whether to perform a sampling operation on the tobacco stems according to the time-weight curve.

[0065] Specifically, before determining the sampling operation for the tobacco stems, the blowing speed in the first output channel can be obtained at preset time intervals to determine whether the flow rate of the tobacco stems in the channel is in a normal state (effectively detecting blockages in the channel). The method of obtaining the blowing speed can be, but is not limited to, collected by a sensor arranged in the first output channel. Possibly, when it is detected that the blowing speeds corresponding to at least two consecutive time intervals are both within the preset speed range, it indicates that the flow rate of the tobacco stems in the channel is in a normal state at this time. Furthermore, the weight of the tobacco stems corresponding to at least three consecutive moments can be obtained by, but is not limited to, a weighing device arranged at the outlet of the first output channel. Possibly, when it is detected that the blowing speed corresponding to at least one consecutive time interval is not within the preset speed range, it indicates that the flow rate of the tobacco stems in the channel is not in a normal state at this time. Furthermore, the blowing speed can be continuously obtained at the preset time intervals. And when the blowing speed corresponding to at least one consecutive time interval is approximately 0, it also indicates that there may be a blockage in the channel at this time, and it is necessary to promptly conduct an inspection manually.

[0066] Next, the time-weight curve can be plotted based on the weight of the tobacco stems corresponding to each moment and all the corresponding moments, so as to effectively determine whether to perform a sampling operation on the tobacco stems according to this time-weight curve. Among them, the abscissa of the time-weight curve can be, but is not limited to, corresponding to the moment, and the ordinate can be, but is not limited to, corresponding to the weight. In this time-weight curve, it includes the weight coordinates of each moment and the connection lines between any two adjacent moment weight coordinates.

[0067] As another alternative in the embodiments of the present application, determining whether to perform a sampling operation on the tobacco stems according to the time-weight curve includes:

[0068] Determine at least three moment weight coordinates from the time-weight curve, and plan a first linear curve based on all the moment weight coordinates; among them, the sum of the straight-line distances from the first linear curve to each moment weight coordinate is the smallest;

[0069] When it is detected that the slope of the first linear curve is consistent with the slope of the preset linear curve, determine to perform a sampling operation on the tobacco stems.

[0070] Specifically, after plotting the time-weight curve, at least three moment weight coordinates can be determined in, but are not limited to, this time-weight curve, and a first linear curve is planned based on these three moment weight coordinates. The expression of this first linear curve can be, but is not limited to, y = k * x + b, and the sum of the straight-line distances from this first linear curve to each moment weight coordinate is the smallest. It can be understood that this first linear curve can correspond to the curve that most closely represents the relationship change between the moment and the weight actually.

[0071] Next, when it is detected that the slope of the first linear curve is consistent with the slope of the preset linear curve, it can be determined that the relationship change between the moment and the weight is in a normal state, and then it can be determined that the sampling operation can be performed on the tobacco stems.

[0072] As another option of the embodiment of the present application, after planning the first linear curve according to all the moment weight coordinates, it further includes:

[0073] When it is detected that the slope of the first linear curve is inconsistent with the slope of the preset curve, the moment weight coordinate with the farthest straight-line distance to the first linear curve is removed from all the moment weight coordinates;

[0074] Plan a second linear curve according to the remaining all moment weight coordinates; wherein, the sum of the straight-line distances from the second linear curve to each moment weight coordinate is the smallest;

[0075] When it is detected that the slope of the second linear curve is consistent with the slope of the preset linear curve, it is determined to perform the sampling operation on the tobacco stems.

[0076] Specifically, when it is detected that the slope of the first linear curve is inconsistent with the slope of the preset linear curve, it indicates that the relationship change between the moment and the weight has not yet been in a normal state. To exclude the influence of individual abnormal data on the relationship change between the moment and the weight, the moment weight coordinate with the farthest straight-line distance to the first linear curve can be removed from all the moment weight coordinates, and a second linear curve is planned according to the remaining all moment weight coordinates.

[0077] Next, when it is detected that the slope of the second linear curve is consistent with the slope of the preset linear curve, it indicates that individual abnormal data has an impact on the relationship change between the moment and the weight, and then it is determined that the sampling operation can be performed on the tobacco stems. Possibly, when it is detected that the slope of the second linear curve is inconsistent with the slope of the preset linear curve, it indicates that after excluding the influence of individual abnormal data, the relationship change between the moment and the weight has not yet been in a normal state, and at this time, the staff needs to be notified to handle it in time.

[0078] Step 104: Output a high-level signal from both ends of the power supply to the circuit where the normally open contact of the first relay and the stem-taking control button is located, so that the normally open contact of the first relay is switched from the off state to the on state, and output a high-level signal from both ends of the power supply to the circuit where the second relay and the normally open contact of the first relay is located, so that both the first normally open contact and the second normally open contact of the second relay are switched from the off state to the on state.

[0079] Specifically, after the normally open contact of the stem-taking control button changes from the off state to the on state, a high-level signal can be output to the circuit where the first relay and the normally open contact of the stem-taking control button are located based on both ends of the power supply. Since the circuit where the first relay and the normally open contact of the stem-taking control button are located is in a conducting state, the first relay can receive the high-level signal output by the power supply, and then the normally open contact of the first relay can change from the off state to the on state.

[0080] Further, after the normally open contact of the first relay changes from the off state to the on state, a high-level signal can also be output to the circuit where the second relay and the normally open contact of the first relay are located based on both ends of the power supply. Since the circuit where the second relay and the normally open contact of the first relay are located is in a conducting state, the second relay can receive the high-level signal output by the power supply, and then the first normally open contact and the second normally open contact of the second relay can both change from the off state to the on state.

[0081] Step 106: Output a high-level signal to the circuit where the sampling valve and the first normally open contact of the second relay are located based on both ends of the power supply to make the sampling valve conduct the channel between the tobacco stem input channel and the second output channel.

[0082] Specifically, after the first normally open contact and the second normally open contact of the second relay both change from the off state to the on state, a high-level signal can be output to the circuit where the sampling valve and the first normally open contact of the second relay are located based on both ends of the power supply. Since the circuit where the sampling valve and the first normally open contact of the second relay are located is in a conducting state, the sampling valve can receive the electrical signal output by the power supply, and then the channel between the tobacco stem input channel and the second output channel can be conducted.

[0083] Step 108: Output a high-level signal to the circuit where the third relay and the second normally open contact of the second relay are located based on both ends of the power supply to make the normally open contact of the third relay change from the off state to the on state.

[0084] Specifically, after the first normally open contact and the second normally open contact of the second relay both change from the off state to the on state, a high-level signal can also be output to the circuit where the third relay and the second normally open contact of the second relay are located based on both ends of the power supply. Since the circuit where the third relay and the second normally open contact of the second relay are located is in a conducting state, the third relay can receive the high-level signal output by the power supply, and then the normally open contact of the third relay changes from the off state to the on state.

[0085] Step 110: Output a high-level signal from both ends of the power supply to the circuit where the air make-up valve and the normally open contact of the third relay are located, so that the air make-up valve blows the tobacco stems in the tobacco stem input channel out from the second output channel, and the tobacco stem collection box arranged at the outlet of the second output channel samples and weighs the tobacco stems.

[0086] Specifically, after the normally open contact of the third relay is switched from the off state to the on state, a high-level signal can be output from both ends of the power supply to the circuit where the air make-up valve and the normally open contact of the third relay are located. Since the circuit where the air make-up valve and the normally open contact of the third relay are located is in a conducting state, the air make-up valve can receive the electrical signal output by the power supply, and then the air make-up valve is in a working state, that is, a high-speed air flow is generated in the tobacco stem input channel.

[0087] As another option of the embodiment of the present application, the stem taking control system further includes a pressure sensor and a fourth relay. The pressure sensor is arranged on the first output channel and between both ends of the power supply to receive the electrical signal output by the power supply; the fourth relay is arranged between one end of the power supply and the pressure sensor, and the on-off state of the circuit where it is located can be controlled by the pressure sensor; the first normally closed contact of the fourth relay is arranged at both ends of the normally open contact of the stem taking control button to make the first normally closed contact of the fourth relay and the circuit where the second relay is located in a conducting state when the fourth relay does not receive the high-level signal output by the power supply (that is, when the normally open contact of the stem taking control button fails, the normally open contact of the stem taking control button can be replaced); the second normally closed contact of the fourth relay is arranged at both ends of the second normally open contact of the second relay to make the second normally closed contact of the fourth relay and the circuit where the third relay is located in a conducting state when the fourth relay does not receive the high-level signal output by the power supply (that is, when the second normally open contact of the second relay fails, the second normally open contact of the second relay can be replaced), and the tobacco stems can be smoothly discharged from the second output channel through the normal operation of the air make-up valve and the sampling valve in case of channel blockage or malfunction of the stem removing fan.

[0088] As another option of the embodiment of the present application, after outputting a high-level signal from both ends of the power supply to the circuit where the air make-up valve and the normally open contact of the third relay are located, it further includes:

[0089] Obtain the air pressure data in the first output channel based on the pressure sensor;

[0090] When it is detected that the air pressure data is lower than the preset standard air pressure, output a high-level signal to the fourth relay based on the pressure sensor and one end of the power supply, so that both the first normally closed contact and the second normally closed contact of the fourth relay are switched from the off state to the on state;

[0091] Based on the two ends of the power supply, a high-level signal is output to the first normally closed contact of the fourth relay and the circuit where the second relay is located, so that the first normally open contact and the second normally open contact of the second relay are both switched from the off state to the on state;

[0092] Based on the two ends of the power supply, a high-level signal is output to the sampling valve and the circuit where the first normally open contact of the second relay is located, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel.

[0093] Specifically, in order to avoid risks such as the accumulation of tobacco stems in the channel and equipment damage caused by equipment failures, the air pressure data in the first output channel can be obtained based on the air pressure sensor, and when it is detected that the air pressure data is lower than the preset standard air pressure, it indicates that there is a fault risk at this time. Furthermore, a high-level signal can be output to the fourth relay based on the air pressure sensor and one end of the power supply, so that the fourth relay is in a power-off state at this time, that is, it does not receive the high-level signal output by the power supply. It can be understood that here, the circuit where the fourth relay is located can also be controlled by the air pressure sensor to be in an open circuit state, and it is not limited to this.

[0094] Next, when the fourth relay is in a power-off state, the first normally closed contact and the second normally closed contact of the fourth relay are both switched from the off state to the on state, and a high-level signal can be output to the first normally closed contact of the fourth relay and the circuit where the second relay is located based on the two ends of the power supply. Since the first normally closed contact of the fourth relay and the circuit where the second relay is located are in a conducting state, the second relay can receive the high-level signal of the power supply through the first normally closed contact of the fourth relay at this time (without receiving the high-level signal of the power supply through the normally open contact of the stem-taking control button). This can not only realize the replacement process of the normally open contact of the stem-taking control button, but also make the sampling valve conduct the channel between the tobacco stem input channel and the second output channel based on the second relay.

[0095] In addition, a high-level signal can be output to the second normally closed contact of the fourth relay and the circuit where the third relay is located based on the two ends of the power supply. Since the second normally closed contact of the fourth relay and the circuit where the third relay is located are in a conducting state, the third relay can receive the high-level signal of the power supply through the second normally closed contact of the fourth relay at this time (without receiving the high-level signal of the power supply through the second normally open contact of the second relay). This can not only realize the replacement process of the second normally open contact of the second relay, but also blow the tobacco stems in the tobacco stem input channel out of the second output channel based on the air supply valve.

[0096] Please refer to Figure 3 , Figure 3 which shows a schematic structural diagram of a stem-taking control device for a tobacco stem conveying device of a cigarette making machine provided by an embodiment of the present application.

[0097] AsFigure 3 As shown in the figure, a stem-taking control button S1 can be added to the side of the ZJ118 cigarette making machine. Relays K1, K2, K3, and K4 are installed in the electrical cabinet of the ZJ118 cigarette making machine. An air supply valve Y1 is installed at the input part of the stem conveying channel, a sampling conversion solenoid valve Y2 is installed between the first output part and the second output part, and a pressure sensor S2 is installed at the first output part. The normally open contact of button S1, pin 13, is connected to the 24V positive pole, and pin 14 is connected to pin B1 of time relay K3; pin A1 of the coil of relay K1 is connected to pin 14 of the normally open contact of relay K2 and pin 12 of the normally closed contact of relay K4. Pin A2 of the coil of K1 is connected to the 24V negative pole. The normally open contact of relay K1, pin 11, is connected to the 24V positive pole, and pin 14 is connected to the air supply solenoid valve Y1; pin A1 of the coil of relay K2 is connected to pin 18 of the normally open contact of time relay K3 and pin 12 of the normally closed contact of relay K4. Pin A2 of the coil of K2 is connected to the 24V negative pole. The normally open contact of relay K2, pin 11, is connected to the 24V positive pole, and pin 14 is connected to the sampling solenoid valve Y2; pin A1 of the coil of relay K3 is connected to the 24V positive pole, and coil A2 is connected to the 24V negative pole. Pin 15 of the normally open contact of K3 is connected to the 24V positive pole; pin A1 of the coil of relay K4 is connected to the 24V positive pole, coil A2 is connected to the output end of the air pressure detection, and pin 11 of the normally closed contact of K4 is connected to the 24V positive pole.

[0098] When it is necessary to take a timed sample of the tobacco stems, press button S1, and time relay K3 starts to work. The normally open contact closes, the coil of relay K2 is energized, the normally open contact closes to control the sampling solenoid valve to work. The sampling solenoid valve works, driving the tobacco stems to be output from the first part to the second part. And when the coil of K2 is energized, the normally open contact closes to control the coil of relay K1 to be energized. The normally open contact of K1 closes to control the air supply solenoid valve to work, generating a high-speed air flow so that the tobacco stems can be better discharged to the tobacco stem collection part outside the equipment.

[0099] When the pressure sensor S2 installed on the first output part detects that there is an abnormality in the operation of the centralized air flow conveying system, such as a pipeline blockage or a malfunction of the stem removing fan, the pressure sensor detects that the air pressure in the pipeline becomes low. The air pressure detection S2 controls the coil of relay K4 to lose power and disconnect. The normally closed contact of relay K4 closes, the sampling solenoid valve conducts the second tobacco stem conveying path and the air supply solenoid valve works, and the tobacco stems are discharged to the tobacco stem collection part outside the equipment through the tobacco stem input part and the second output part.

[0100] Please refer to Figure 4 , Figure 4 which shows a schematic structural diagram of a stem-taking control device for a tobacco stem conveying device of a cigarette making machine provided by an embodiment of the present application.

[0101] As Figure 4As shown in the figure, the tobacco stem conveying device includes a tobacco stem input channel, a first output channel, and a second output channel. The stem-taking control device for the tobacco stem conveying device of the cigarette making machine is applied to the stem-taking control system. The stem-taking control system includes a sampling valve, a make-up air valve, a stem-taking control button, a first relay, a second relay, and a third relay. The sampling valve is arranged between the tobacco stem input channel and the second output channel. The make-up air valve is arranged on the tobacco stem input channel. The normally open contact of the stem-taking control button and the first relay are arranged between the two ends of the power supply. The normally open contact of the first relay and the second relay are arranged between the two ends of the power supply. The first normally open contact of the second relay and the sampling valve are arranged between the two ends of the power supply. The second normally open contact of the second relay and the third relay are arranged between the two ends of the power supply. The normally open contact of the third relay and the make-up air valve are arranged between the two ends of the power supply. The stem-taking control device for the tobacco stem conveying device of the cigarette making machine may at least include a first processing module 401, a second processing module 402, a third processing module 403, a fourth processing module 404, and a fifth processing module 405, where:

[0102] The first processing module 401 is used to, when it is determined that a sampling operation is to be performed on the tobacco stem, obtain a pressing operation based on the stem-taking control button, so that the normally open contact of the stem-taking control button is changed from the off state to the on state;

[0103] The second processing module 402 is used to output a high-level signal based on the two ends of the power supply to the circuit where the first relay and the normally open contact of the stem-taking control button are located, so that the normally open contact of the first relay is changed from the off state to the on state, and output a high-level signal based on the two ends of the power supply to the circuit where the second relay and the normally open contact of the first relay are located, so that both the first normally open contact and the second normally open contact of the second relay are changed from the off state to the on state;

[0104] The third processing module 403 is used to output a high-level signal based on the two ends of the power supply to the circuit where the sampling valve and the first normally open contact of the second relay are located, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel;

[0105] The fourth processing module 404 is used to output a high-level signal based on the two ends of the power supply to the circuit where the third relay and the second normally open contact of the second relay are located, so that the normally open contact of the third relay is changed from the off state to the on state;

[0106] The fifth processing module 405 is used to output a high-level signal based on the two ends of the power supply to the circuit where the make-up air valve and the normally open contact of the third relay are located, so that the make-up air valve blows the tobacco stem in the tobacco stem input channel out from the second output channel, and the tobacco stem collection box arranged at the outlet of the second output channel performs sampling and weighing processing on the tobacco stem.

[0107] Those skilled in the art can clearly understand that the technical solutions of the embodiments of this application can be implemented by means of software and / or hardware. The "units" and "modules" in this specification refer to software and / or hardware that can independently complete or cooperate with other components to complete specific functions, where the hardware can be, for example, a Field-Programmable Gate Array (FPGA), an Integrated Circuit (IC), etc.

[0108] Please refer to Figure 5 , Figure 5 which shows a schematic structural diagram of another stem-taking control device for a cigarette stem conveying device provided by an embodiment of this application.

[0109] As Figure 5 shown, the stem-taking control device 500 for the cigarette stem conveying device of a cigarette making machine may include at least one processor 501, at least one network interface 504, a user interface 503, a memory 505, and at least one communication bus 502.

[0110] Among them, the communication bus 502 can be used to realize the connection and communication of the above-mentioned various components.

[0111] Among them, the user interface 503 may include buttons, and the optional user interface may further include a standard wired interface and a wireless interface.

[0112] Among them, the network interface 504 may include, but is not limited to, a Bluetooth module, an NFC module, a Wi-Fi module, etc.

[0113] Among them, the processor 501 may include one or more processing cores. The processor 501 uses various interfaces and lines to connect various parts within the stem-taking control device 500 for the cigarette stem conveying device of a cigarette making machine, and by running or executing instructions, programs, code sets, or instruction sets stored in the memory 505, and by calling the data stored in the memory 505, it executes various functions of the stem-taking control device 500 for the cigarette stem conveying device of a cigarette making machine and processes data. Optionally, the processor 501 may be implemented in at least one hardware form of a DSP, an FPGA, or a PLA. The processor 501 may integrate one or several combinations of a CPU, a GPU, and a modem, etc. Among them, the CPU mainly processes the operating system, the user interface, and application programs, etc.; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communication. It can be understood that the above-mentioned modem may not be integrated into the processor 501 and may be implemented separately by a single chip.

[0114] Among them, the memory 505 may include RAM and may also include ROM. Optionally, the memory 505 includes a non-transitory computer-readable medium. The memory 505 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 505 may include a program storage area and a data storage area. Among them, the program storage area can store instructions for implementing the operating system, instructions for at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area can store the data involved in the above-mentioned various method embodiments. Optionally, the memory 505 may also be at least one storage device located far from the aforementioned processor 501. As Figure 5 shown, the memory 505, as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a stem-taking control application for the cigarette stem conveying device of a cigarette making machine.

[0115] Specifically, the processor 501 can be used to call the stem-taking control application stored in the memory 505 and specifically perform the following operations:

[0116] When it is determined that a sampling operation is to be performed on the cigarette stems, a pressing operation is obtained based on the stem-taking control button, so that the normally open contact of the stem-taking control button changes from the off state to the on state;

[0117] Based on the two ends of the power supply, a high-level signal is output to the circuit where the first relay and the normally open contact of the stem-taking control button are located, so that the normally open contact of the first relay changes from the off state to the on state, and based on the two ends of the power supply, a high-level signal is output to the circuit where the second relay and the normally open contact of the first relay are located, so that both the first normally open contact and the second normally open contact of the second relay change from the off state to the on state;

[0118] Based on the two ends of the power supply, a high-level signal is output to the circuit where the sampling valve and the first normally open contact of the second relay are located, so that the sampling valve conducts the passage between the cigarette stem input channel and the second output channel;

[0119] Based on the two ends of the power supply, a high-level signal is output to the circuit where the third relay and the second normally open contact of the second relay are located, so that the normally open contact of the third relay changes from the off state to the on state;

[0120] Based on the two ends of the power supply, a high-level signal is output to the circuit where the air supply compensation valve and the normally open contact of the third relay are located, so that the air supply compensation valve blows the cigarette stems in the cigarette stem input channel out from the second output channel, and the cigarette stems are sampled and weighed by a cigarette stem collection box arranged at the outlet of the second output channel.

[0121] In some possible embodiments, before determining that a sampling operation is to be performed on the cigarette stems, it further includes:

[0122] Obtain the blowing speed in the first output channel at a preset time interval, and when it is detected that the blowing speed is within a preset speed range, obtain the weight of the tobacco stems output corresponding to at least three moments in the first output channel;

[0123] Draw a time-weight curve based on the weight of the tobacco stems corresponding to each moment and all moments, and determine whether to sample the tobacco stems according to the time-weight curve.

[0124] In some possible embodiments, determining whether to sample the tobacco stems according to the time-weight curve includes:

[0125] Determine at least three time-weight coordinates from the time-weight curve, and plan a first linear curve based on all the time-weight coordinates; wherein, the sum of the straight-line distances between the first linear curve and each time-weight coordinate is the smallest;

[0126] When it is detected that the slope of the first linear curve is consistent with the slope of the preset linear curve, determine to sample the tobacco stems.

[0127] In some possible embodiments, after planning the first linear curve based on all the time-weight coordinates, it further includes:

[0128] When it is detected that the slope of the first linear curve is inconsistent with the slope of the preset curve, perform a rejection process on the time-weight coordinate with the farthest straight-line distance to the first linear curve among all the time-weight coordinates;

[0129] Plan a second linear curve based on the remaining all time-weight coordinates; wherein, the sum of the straight-line distances between the second linear curve and each time-weight coordinate is the smallest;

[0130] When it is detected that the slope of the second linear curve is consistent with the slope of the preset linear curve, determine to sample the tobacco stems.

[0131] In some possible embodiments, the stem taking control system further includes a pressure sensor and a fourth relay. The pressure sensor is arranged on the first output channel, the pressure sensor is arranged between the two ends of the power supply, the fourth relay is arranged between one end of the power supply and the pressure sensor, the first normally closed contact of the fourth relay is arranged at both ends of the normally open contact of the stem taking control button, and the second normally closed contact of the fourth relay is arranged at both ends of the second normally open contact of the second relay.

[0132] In some possible embodiments, after outputting a high-level signal to the circuit where the air supply valve and the normally open contact of the third relay are located based on both ends of the power supply, it further includes:

[0133] Obtain the air pressure data in the first output channel based on the air pressure sensor;

[0134] When it is detected that the air pressure data is lower than the preset standard air pressure, output a high-level signal to the fourth relay based on the air pressure sensor and one end of the power supply, so that both the first normally closed contact and the second normally closed contact of the fourth relay are converted from the off state to the on state;

[0135] Output a high-level signal to the first normally closed contact of the fourth relay and the circuit where the second relay is located based on both ends of the power supply, so that both the first normally open contact and the second normally open contact of the second relay are converted from the off state to the on state;

[0136] Output a high-level signal to the sampling valve and the circuit where the first normally open contact of the second relay is located based on both ends of the power supply, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel.

[0137] In some possible embodiments, after outputting a high-level signal to the first normally closed contact of the fourth relay and the circuit where the second relay is located based on both ends of the power supply, it further includes:

[0138] Output a high-level signal to the second normally closed contact of the fourth relay and the circuit where the third relay is located based on both ends of the power supply, so that the normally open contact of the third relay is converted from the off state to the on state;

[0139] Output a high-level signal to the air supply make-up valve and the circuit where the normally open contact of the third relay is located based on both ends of the power supply, so that the air supply make-up valve blows the tobacco stems in the tobacco stem input channel out from the second output channel.

[0140] This application also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the above method are implemented. Among them, the computer-readable storage medium may include, but is not limited to, any type of disk, including floppy disks, optical disks, DVDs, CD-ROMs, micro drives, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic cards or optical cards, nano-systems (including molecular memory ICs), or any type of medium or device suitable for storing instructions and / or data.

[0141] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0142] In the above embodiments, the descriptions of the various embodiments each have their own focuses. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0143] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some service interfaces. The indirect couplings or communication connections of devices or units can be in electrical or other forms.

[0144] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0145] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0146] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present application. And the aforementioned memory includes: various media such as USB flash drives, read-only memories (ROM), random access memories (RAM), mobile hard disks, magnetic disks, or optical discs that can store program codes.

Claims

1. A method for controlling stem picking of a stem conveying device for a cigarette making machine, characterized in that, The tobacco stem conveying device includes a tobacco stem input channel, a first output channel, and a second output channel. The method is applied to a stem taking control system, which includes a sampling valve, a makeup air valve, a stem taking control button, a first relay, a second relay, and a third relay. The sampling valve is arranged between the tobacco stem input channel and the second output channel. The makeup air valve is arranged on the tobacco stem input channel. The normally open contact of the stem taking control button and the first relay are arranged between the two ends of the power supply. The normally open contact of the first relay and the second relay are arranged between the two ends of the power supply. The first normally open contact of the second relay and the sampling valve are arranged between the two ends of the power supply. The second normally open contact of the second relay and the third relay are arranged between the two ends of the power supply. The normally open contact of the third relay and the makeup air valve are arranged between the two ends of the power supply. The method includes: When it is determined to perform a sampling operation on the tobacco stem, obtain a pressing operation based on the stem taking control button, so that the normally open contact of the stem taking control button is changed from the off state to the on state; Output a high-level signal to the circuit where the first relay and the normally open contact of the stem taking control button are located based on the two ends of the power supply, so that the normally open contact of the first relay is changed from the off state to the on state, and output a high-level signal to the circuit where the second relay and the normally open contact of the first relay are located based on the two ends of the power supply, so that both the first normally open contact and the second normally open contact of the second relay are changed from the off state to the on state; Output a high-level signal to the circuit where the sampling valve and the first normally open contact of the second relay are located based on the two ends of the power supply, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel; Output a high-level signal to the circuit where the third relay and the second normally open contact of the second relay are located based on the two ends of the power supply, so that the normally open contact of the third relay is changed from the off state to the on state; Output a high-level signal to the circuit where the makeup air valve and the normally open contact of the third relay are located based on the two ends of the power supply, so that the makeup air valve blows the tobacco stem in the tobacco stem input channel out from the second output channel, and the tobacco stem collecting box arranged at the outlet of the second output channel performs sampling and weighing processing on the tobacco stem; Wherein, the stem taking control system further includes a pressure sensor and a fourth relay. The pressure sensor is arranged on the first output channel. The pressure sensor is arranged between the two ends of the power supply. The fourth relay is arranged between one end of the power supply and the pressure sensor. The first normally closed contact of the fourth relay is arranged at both ends of the normally open contact of the stem taking control button. The second normally closed contact of the fourth relay is arranged at both ends of the second normally open contact of the second relay.

2. The method according to claim 1, wherein Before the determination of performing a sampling operation on the tobacco stem, it further includes: Obtain the blowing speed in the first output channel at preset time intervals, and when it is detected that the blowing speed is within a preset speed range, obtain the weight of the tobacco stems output corresponding to at least three moments in the first output channel; Draw a time-weight curve based on the weight of the tobacco stems corresponding to each moment and all the moments, and determine whether to perform a sampling operation on the tobacco stems according to the time-weight curve.

3. The method according to claim 2, wherein The determining whether to perform a sampling operation on the tobacco stems according to the time-weight curve includes: Determine at least three time-weight coordinates from the time-weight curve, and plan a first linear curve based on all the time-weight coordinates; wherein, the sum of the straight-line distances between the first linear curve and each time-weight coordinate is the smallest; When it is detected that the slope of the first linear curve is consistent with the slope of the preset linear curve, determine to perform a sampling operation on the tobacco stems.

4. The method according to claim 3, characterized in that, After planning the first linear curve based on all the time-weight coordinates, it further includes: When it is detected that the slope of the first linear curve is inconsistent with the slope of the preset curve, perform a rejection process on the time-weight coordinate with the farthest straight-line distance to the first linear curve among all the time-weight coordinates; Plan a second linear curve based on the remaining all time-weight coordinates; wherein, the sum of the straight-line distances between the second linear curve and each time-weight coordinate is the smallest; When it is detected that the slope of the second linear curve is consistent with the slope of the preset linear curve, determine to perform a sampling operation on the tobacco stems.

5. The method according to claim 1, wherein After outputting a high-level signal to the circuit where the air make-up valve and the normally open contact of the third relay are located based on both ends of the power supply, it further includes: Obtain the air pressure data in the first output channel based on the air pressure sensor; When it is detected that the air pressure data is lower than the preset standard air pressure, output a high-level signal to the fourth relay based on the air pressure sensor and one end of the power supply, so that both the first normally closed contact and the second normally closed contact of the fourth relay are converted from the off state to the on state; Output a high-level signal to the circuit where the first normally closed contact of the fourth relay and the second relay are located based on both ends of the power supply, so that both the first normally open contact and the second normally open contact of the second relay are converted from the off state to the on state; Output a high-level signal to the circuit where the sampling valve and the first normally open contact of the second relay are located based on both ends of the power supply, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel.

6. The method according to claim 5, wherein After outputting a high-level signal to the circuit where the first normally closed contact of the fourth relay and the second relay are located based on both ends of the power supply, it further includes: outputting a high-level signal to the circuit where the second normally closed contact of the fourth relay and the third relay are located based on both ends of the power supply, so that the normally open contact of the third relay is converted from the off state to the on state; Output a high-level signal from both ends of the power supply to the circuit where the make-up air valve and the normally open contact of the third relay are located, so that the make-up air valve blows the tobacco stems in the tobacco stem input channel out from the second output channel.

7. A stem-taking control device for a stem conveying device of a cigarette making machine, characterized in that, The tobacco stem conveying device includes a tobacco stem input channel, a first output channel, and a second output channel. The device is applied to a tobacco stem taking control system, which includes a sampling valve, a make-up air valve, a tobacco stem taking control button, a first relay, a second relay, and a third relay. The sampling valve is arranged between the tobacco stem input channel and the second output channel. The make-up air valve is arranged on the tobacco stem input channel. The normally open contact of the tobacco stem taking control button and the first relay are arranged between both ends of the power supply. The normally open contact of the first relay and the second relay are arranged between both ends of the power supply. The first normally open contact of the second relay and the sampling valve are arranged between both ends of the power supply. The second normally open contact of the second relay and the third relay are arranged between both ends of the power supply. The normally open contact of the third relay and the make-up air valve are arranged between both ends of the power supply. The device includes: A first processing module, configured to, when it is determined that a tobacco stem sampling operation is to be performed, obtain a pressing operation based on the tobacco stem taking control button, so that the normally open contact of the tobacco stem taking control button is switched from an off state to an on state; A second processing module, configured to output a high-level signal from both ends of the power supply to the circuit where the first relay and the normally open contact of the tobacco stem taking control button are located, so that the normally open contact of the first relay is switched from an off state to an on state, and output a high-level signal from both ends of the power supply to the circuit where the second relay and the normally open contact of the first relay are located, so that both the first normally open contact and the second normally open contact of the second relay are switched from an off state to an on state; A third processing module, configured to output a high-level signal from both ends of the power supply to the circuit where the sampling valve and the first normally open contact of the second relay are located, so that the sampling valve conducts the channel between the tobacco stem input channel and the second output channel; A fourth processing module, configured to output a high-level signal from both ends of the power supply to the circuit where the third relay and the second normally open contact of the second relay are located, so that the normally open contact of the third relay is switched from an off state to an on state; A fifth processing module, configured to output a high-level signal from both ends of the power supply to the circuit where the make-up air valve and the normally open contact of the third relay are located, so that the make-up air valve blows the tobacco stems in the tobacco stem input channel out from the second output channel, and a tobacco stem collection box arranged at the outlet of the second output channel performs sampling and weighing processing on the tobacco stems; Among them, the stem extraction control system further includes a barometric pressure sensor and a fourth relay. The barometric pressure sensor is arranged on the first output channel, the barometric pressure sensor is arranged between both ends of the power supply, the fourth relay is arranged between one end of the power supply and the barometric pressure sensor, the first normally closed contact of the fourth relay is arranged at both ends of the normally open contact of the stem extraction control button, and the second normally closed contact of the fourth relay is arranged at both ends of the second normally open contact of the second relay.

8. A stem-taking control device for a stem conveying device of a cigarette making machine, characterized in that, comprising a processor and a memory; The processor is connected to the memory; The memory is used for storing executable program codes; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to execute the steps of the method according to any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, Instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer or a processor, the computer or the processor is caused to execute the steps of the method according to any one of claims 1-6.

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