Flow balance control method and system for cut tobacco feeder linked with cigarette making unit

Abstract

The invention belongs to the technical field of tobacco shred making, and provides a flow balance control method and system for a shred feeder linked with a cigarette making unit, and the method comprises the steps: firstly, obtaining the operation time of an elevator belt, the material level in a quantitative tube in the shred feeder, and the material demand condition of the cigarette making unit corresponding to the shred feeder in the shred feeder; then, the operation state of the lifting belt is controlled on the basis of the time when the material level in the quantitative pipe exceeds the middle material level; and controlling the frequency of a storage cabinet bottom belt in the storage cabinet according to the material demand condition of a cigarette making machine set corresponding to the cut tobacco feeder, specifically, when the cigarette making machine set has the material demand, determining the material demand frequency according to the time interval of the preset time pulse, and obtaining the operation percentage according to the ratio of the operation time of the lifting belt to the material demand frequency, controlling and adjusting the bottom band frequency of the storage cabinet according to the running percentage; by adjusting the frequency of the bottom belt of the storage cabinet, the problem that the flow of the wire feeding machine fluctuates greatly is avoided, and frequent start and stop of discharging equipment in the production process are not needed.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco shred production, and in particular relates to a flow balance control method and system for a shred feeder linked with a cigarette making machine. Background Art

[0002] In tobacco production enterprises, the tobacco storage and supply process plays a connecting role between the tobacco production workshop and the tobacco rolling and packaging workshop, and needs to provide finished tobacco to the tobacco rolling and packaging workshop in a timely, accurate and stable manner. Cabinet tobacco supply system equipment is generally composed of storage cabinets, belt conveyors, tobacco feeders and air delivery systems.

[0003] At present, in the flow control and regulation of the tobacco supply system, when the discharge flow of the storage cabinet fluctuates or the tobacco demand of the cigarette making unit corresponding to the tobacco feeder changes, timely and effective adjustments cannot be made, resulting in large fluctuations in the flow of the tobacco feeder, affecting the normal production of the rolling workshop. In addition, the frequent start and stop of the discharge equipment during the production process leads to material breakage (breakage caused by object impact) and equipment wear problems. Summary of the invention

[0004] In order to solve the above-mentioned problem, the present invention proposes a flow balance control method and system for a wire feeder linked with a cigarette making unit. The present invention controls the operating state of the lifting belt based on the time when the material level in the quantitative tube exceeds the middle material level; and dynamically adjusts the frequency of the bottom belt of the storage cabinet and the horizontal belt of the wire feeder in the storage cabinet according to the changes in the material demand of the wire feeder corresponding to the cigarette making unit, thereby avoiding the problem of large fluctuations in the flow of the wire feeder and eliminating the need for frequent start and stop of the discharging equipment during the production process.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, the present invention provides a flow balance control method of a cigarette thread feeder linked with a cigarette making machine, comprising:

[0007] Obtain the running time of the lifting belt, the material level in the quantitative tube of the wire feeder unit, and the material demand of the wire feeder corresponding to the cigarette making unit in the wire feeder unit;

[0008] The operating state of the lifting belt is controlled based on the time when the material level in the quantitative tube exceeds the middle material level; and the frequency of the bottom belt of the storage cabinet is controlled based on the material demand of the cigarette making unit corresponding to the thread feeder. Specifically, when the cigarette making unit has a material demand, the number of material demands is determined at the time interval of the preset time pulse, and the operating percentage is obtained by the ratio of the lifting belt operating time and the number of material demands, and the frequency of the bottom belt of the storage cabinet is controlled and adjusted according to the operating percentage.

[0009] Further, when the material level in the metering pipe is higher than the middle material level for more than the first preset time, control the lifting belt to stop running; when the material level in the metering pipe is lower than the middle material level for more than the second preset time, control the lifting belt to run.

[0010] Further, when the operation percentage increases, increase the empirical value of the low-speed setting frequency of the bottom belt of the storage cabinet; when the operation percentage decreases, decrease the empirical value of the low-speed setting frequency of the bottom belt of the storage cabinet.

[0011] Further, when the number of cigarette-making units demanding materials increases, increase the set value of the frequency of the bottom belt of the storage cabinet.

[0012] Further, when the continuous running time of the horizontal belt of the feeding machine reaches the set value, increase the set value of the frequency of the bottom belt of the storage cabinet.

[0013] Further, dynamically adjust the frequency of the horizontal belt of the feeding machine according to the change in the number of cigarette-making units demanding materials.

[0014] In a second aspect, the present invention also provides a feeding machine flow balance control system linked to a cigarette-making unit, including:

[0015] A data acquisition module, configured to: obtain the running time of the lifting belt, the material level in the metering pipe in the feeding machine unit, and the material demand situation of the feeding machine corresponding to the cigarette-making unit in the feeding machine unit;

[0016] A control module, configured to: control the running state of the lifting belt based on the time when the material level in the metering pipe exceeds the middle material level; and control the frequency of the bottom belt of the storage cabinet in the storage cabinet according to the material demand situation of the feeding machine corresponding to the cigarette-making unit. Specifically, when there is a material demand from the cigarette-making unit, determine the number of material demands at the time interval of the preset time pulse, and obtain the operation percentage through the ratio of the running time of the lifting belt to the number of material demands, and control and adjust the frequency of the bottom belt of the storage cabinet according to the operation percentage.

[0017] In a third aspect, the present invention 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 feeding machine flow balance control method linked to a cigarette-making unit described in the first aspect are implemented.

[0018] In a fourth aspect, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor. When the processor executes the program, the steps of the feeding machine flow balance control method linked to a cigarette-making unit described in the first aspect are implemented.

[0019] In a fifth aspect, the present invention also provides a computer program product, the computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the feeding machine flow balance control method linked to a cigarette-making unit described in the first aspect are implemented.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, based on the time when the material level in the metering tube exceeds the middle material level, the running state of the lifting belt is controlled; and, according to the material demand situation of the wire feeding machine corresponding to the cigarette making unit, the frequency of the bottom belt of the storage cabinet is controlled. Specifically, when there is a material demand from the cigarette making unit, the number of material demands is determined based on the time interval of the preset time pulse, and the running percentage is obtained by the ratio of the running time of the lifting belt to the number of material demands. The frequency of the bottom belt of the storage cabinet is controlled and adjusted according to the running percentage; by adjusting the frequency of the bottom belt of the storage cabinet, the problem of large fluctuations in the flow rate of the wire feeding machine is avoided, and there is no need for the discharging equipment to start and stop frequently during the production process.

[0022] 2. The present invention realizes the automatic control of the discharging of the wire feeding machine by controlling and adjusting according to the running time of the lifting belt, controlling and adjusting in real time according to the change in the number of material demand machine units corresponding to each wire feeding machine for the cigarette making unit, and / or controlling and adjusting according to the zero-speed braking of pulling materials for changing the cabinet of the materials out of the cabinet, etc.; it can control and adjust the running time of the lifting belt in front of the metering tube, prevent the discharging and conveying equipment from starting and stopping frequently, effectively improve the service life of the equipment, ensure the reasonable matching of the cut tobacco supply and the cigarette wrapping demand, realize the continuous supply of cut tobacco from the wire feeding equipment to the cigarette making unit, and is applicable to the cabinet-type cut tobacco supply equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The attached drawings forming a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments and descriptions thereof of this embodiment are used to explain this embodiment and do not constitute an improper limitation of this embodiment.

[0024] Figure 1 It is a schematic diagram of the equipment process of the cabinet-type wire feeding supply system according to Embodiment 1 of the present invention;

[0025] Figure 2 It is the control idea of controlling and adjusting according to the running time of the lifting belt in Embodiment 1 of the present invention;

[0026] Figure 3 It is the control idea of adjusting the frequency of the bottom belt of the storage cabinet and the running frequency of the horizontal belt of the wire feeding machine in real time according to the change in the number of material demand machine units in Embodiment 1 of the present invention;

[0027] Among them, 1. Storage cabinet; 2. First-level belt conveyor; 3. Second-level belt conveyor; 4. Lifting belt; 5. Wire feeding unit; 51. Metering tube; 52. Horizontal belt; 53. Wire feeding machine. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further described below in conjunction with the drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0030] Embodiment 1:

[0031] The present embodiment provides a flow balance control method for a thread feeder linked with a cigarette making unit, including control and adjustment based on the running time of the lifting belt, real-time control and adjustment based on changes in the number of material machines required by each thread feeder corresponding to the cigarette making unit, and / or control and adjustment based on zero-speed braking of the material out of the cabinet and the material exchange cabinet.

[0032] like Figure 1 As shown, in this embodiment, a pneumatic wire feeding supply device can be used, which includes a storage cabinet 1, a primary belt conveyor 2, a secondary belt conveyor 3, a lifting belt 4, a wire feeding unit 5 and a pneumatic conveying system according to the production flow. It can be understood that the material in the storage cabinet 1 is transported to the lifting belt 4 through the primary belt conveyor 2 and the secondary belt conveyor 3; the material is then transported to the wire feeding unit 5 through the lifting belt 4.

[0033] Optionally, the storage cabinet 1 includes a cabinet body, a cabinet bottom belt, and a cabinet feeding roller; the wire feeding unit 5 includes a quantitative tube 51, a horizontal belt 52, and a wire feeding machine 53; the primary belt conveyor 2, the secondary belt conveyor 3, the lifting belt 4, and the horizontal belt 52 can be implemented by a conveyor belt or other conveying mechanism. Under the premise of avoiding changes to the original equipment system hardware as much as possible, for each group of wire feeding machine control systems, the cabinet bottom belt, the lifting belt 4, and the horizontal belt 52 can be frequency-controlled.

[0034] The automatic control of the discharge speed of the wire feeder that affects the linkage with the cigarette making unit may include the following three methods, which can be executed separately, crosswise or simultaneously; specifically, the discharge speed control method of the wire feeder is based on the control and adjustment of the running time of the lifting belt 4 in front of the quantitative tube 51 in the wire feeder unit 5, the discharge speed control method of the wire feeder is based on the real-time adjustment of the frequency of the bottom belt of the storage cabinet and the running frequency of the horizontal belt 52 of the wire feeder according to the change of the number of material machines required by each wire feeder corresponding to the cigarette making unit, and the discharge speed control method of the wire feeder is based on the zero-speed braking of the cabinet-changing material. It can be understood that the cabinet-changing material pulling means that when the material of the currently selected cabinet is about to be discharged, the bottom belt of the next cabinet is opened in advance to transport the tobacco to the discharge port of the cabinet to avoid the interruption of tobacco caused by the lack of material at the discharge port of the cabinet.

[0035] When implementing the control method for the discharging speed of the wire feeder that controls the running time of the lifting belt 4, optionally, the running time of the lifting belt 4 is controlled according to the signal of the middle material level B1 detection switch of the metering pipe 51. When the time that the middle material level B1 detection switch is blocked by the material exceeds the preset T 1 seconds, the lifting belt 4 stops running; when the time that the middle material level B1 detection switch is not blocked by the material exceeds the preset T 2 seconds, the lifting belt 4 runs forward. By controlling and adjusting the running time of the lifting belt 4 in front of the metering pipe 51, the situation of material shortage or frequent start and stop of the storage cabinet discharging and conveying equipment is avoided, and the frequent start and stop of the storage cabinet discharging and conveying equipment is prevented, effectively improving the service life of the equipment. It can be understood that when the middle material level B1 detection switch is blocked by the material, it means that the material level in the metering pipe is higher than the middle material level (the middle position of the metering pipe 51).

[0036] When implementing the control method for the discharging speed of the wire feeder that adjusts the running frequency of the bottom belt of the storage cabinet and the horizontal belt 52 of the wire feeder in real time according to the change in the number of material-requiring machine platforms of each wire feeder corresponding to the cigarette-making unit, optionally, the negative pressure detection switch G is used to judge the number H of material-requiring cigarette-making units. When H≥1, it is judged that there is a material-requiring signal. When there is a material-requiring signal, the number I of material-requiring signals is calculated at a time interval of 1 second pulse, and at the same time, the running time J of the lifting belt 4 is calculated, so as to obtain the running percentage J / I, and the running percentage is used to adjust the low-speed frequency setting value of the bottom belt of the storage cabinet, so as to obtain the empirical value of the low-speed setting frequency of the bottom belt of the storage cabinet. For example, when the running percentage J / I increases, the empirical value of the low-speed setting frequency of the bottom belt of the storage cabinet is increased; when the running percentage J / I decreases, the empirical value of the low-speed setting frequency of the bottom belt of the storage cabinet is decreased. When the empirical value of the low-speed setting frequency of the bottom belt of the storage cabinet increases, it means that the buffer tobacco shreds in the wire feeder are in a state of material shortage, and it is necessary to increase the feeding flow by increasing the frequency of the bottom belt of the storage cabinet to prevent the interruption of material supply; on the contrary, when the empirical value of the low-speed setting frequency of the bottom belt of the storage cabinet decreases, it means that the buffer tobacco shreds in the wire feeder are not in a state of material shortage, and at this time, it is necessary to reduce the frequency of the bottom belt of the storage cabinet to reduce the feeding flow to prevent the wire feeder from being blocked with materials.

[0037] In some embodiments, when implementing the control method for the discharging speed of the wire feeder that adjusts the running frequency of the bottom belt of the storage cabinet and the horizontal belt 52 of the wire feeder in real time according to the change in the number of material-requiring cigarette-making units corresponding to each wire feeder, optionally, the frequency of the bottom belt of the storage cabinet is dynamically compensated according to the change in the number H of material-requiring cigarette-making units of the wire feeder. The dynamic compensation principle is that for each additional Z 1 groups of signals of material-requiring cigarette-making units, the low-speed frequency setting value of the bottom belt of the storage cabinet is also increased by Z 1 Hz frequency.

[0038] In some embodiments, a control method for the discharging speed of the wire feeder is implemented, which adjusts the frequency of the bottom belt of the storage cabinet and the running frequency of the horizontal belt 52 of the wire feeder in real time according to the change in the number of material-requiring machine stations of each wire feeder corresponding to the cigarette-making unit. Optionally, a mutation compensation is performed on the frequency of the bottom belt of the storage cabinet when the continuous running time of the horizontal belt 52 of the wire feeder reaches a certain set value. The mutation compensation principle is that when the continuous running time of the horizontal belt of the wire feeder ≥ T 3 the set value of the low-speed frequency of the bottom belt of the storage cabinet instantaneously increases by Z 2 Hz, and then Z 2 is cleared.

[0039] In some embodiments, a control method for the discharging speed of the wire feeder is implemented, which adjusts the frequency of the bottom belt of the storage cabinet and the running frequency of the horizontal belt 52 of the wire feeder in real time according to the change in the number of material-requiring machine stations of each wire feeder corresponding to the cigarette-making unit. Optionally, the negative pressure detection switch G is used to judge the number H of cigarette-making units requiring materials, and the set value of the frequency of the horizontal belt 52 of the wire feeder is dynamically adjusted according to the change in the number H of cigarette-making units requiring materials. The optimal value of the frequency of the horizontal belt 52 corresponding to the number H of cigarette-making units is calculated based on historical data. By means of respectively transmitting different set values of frequency to the horizontal belt 52 of the wire feeder through the empirical value of the low-speed set frequency of the bottom belt of the storage cabinet, the dynamic compensation value, the mutation compensation value, and the change in the number H of cigarette-making units requiring materials, etc., it is possible to quickly track the increase or decrease in the number of material-requiring machine stations of the cigarette-making unit, adjust the frequency of the bottom belt of the storage cabinet and the running frequency of the horizontal belt of the wire feeder in real time, ensure a reasonable match between the supply of cut tobacco and the demand for cut tobacco in the cigarette-packing process, and realize the continuous supply of cut tobacco from the wire-feeding equipment to the cigarette-making unit.

[0040] When implementing the control method for the discharging speed of the wire feeder that performs zero-speed braking on the material pulling for changing the cabinet of the discharged materials from the cabinet, optionally, the start and stop of the bottom belt of the storage cabinet are controlled according to the cabinet selection signal K for discharging and the start and stop signal of the first belt conveyor 2; effectively solving the problem that when the material head of the full cabinet is discharged and braked, there is a gap in the materials at the cabinet head due to the backward movement of the bottom belt, and effectively avoiding the phenomenon of discontinuous supply of the materials with gaps at the cabinet head.

[0041] In this embodiment, by controlling and adjusting according to the running time of the lifting belt, controlling and adjusting in real time according to the change in the number of material-requiring machine stations of each wire feeder corresponding to the cigarette-making unit, and / or controlling and adjusting according to the zero-speed braking of the material pulling for changing the cabinet of the discharged materials from the cabinet, etc.; the automatic control of the discharging of the wire feeder can be realized, the running time of the lifting belt in front of the metering pipe can be controlled and adjusted, the frequent start and stop of the discharging and conveying equipment can be prevented, the service life of the equipment can be effectively improved, a reasonable match between the supply of cut tobacco and the cigarette-packing demand can be ensured, the continuous supply of cut tobacco from the wire-feeding equipment to the cigarette-making unit is realized, and it is applicable to the cabinet-type cut tobacco supply equipment.

[0042] Embodiment 2:

[0043] This embodiment provides a wire feeder flow balance control system linked with a cigarette-making unit, including:

[0044] A data acquisition module, configured to: obtain the running time of the lifting belt, the material level in the metering pipe of the wire feeding unit, and the material demand situation of the wire feeding machine corresponding to the cigarette making unit in the wire feeding unit;

[0045] A control module, configured to: control the running state of the lifting belt based on the time when the material level in the metering pipe exceeds the middle material level; and control the frequency of the bottom belt of the storage cabinet according to the material demand situation of the wire feeding machine corresponding to the cigarette making unit. Specifically, when there is a material demand in the cigarette making unit, determine the number of material demands at the time interval of a preset time pulse, and obtain the running percentage through the ratio of the running time of the lifting belt to the number of material demands, and control and adjust the frequency of the bottom belt of the storage cabinet according to the running percentage.

[0046] The working method of the system is the same as that of the wire feeding machine flow balance control method linked with the cigarette making unit in Embodiment 1, and will not be elaborated here.

[0047] Embodiment 3:

[0048] This embodiment 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 wire feeding machine flow balance control method linked with the cigarette making unit described in Embodiment 1 are implemented.

[0049] Embodiment 4:

[0050] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor. When the processor executes the program, the steps of the wire feeding machine flow balance control method linked with the cigarette making unit described in Embodiment 1 are implemented.

[0051] Embodiment 5:

[0052] This embodiment provides a computer program product, the computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the wire feeding machine flow balance control method linked with the cigarette making unit described in Embodiment 1 are implemented.

[0053] The above are only the preferred embodiments of this embodiment and are not used to limit this embodiment. For those skilled in the art, this embodiment can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this embodiment shall be included within the protection scope of this embodiment.

Claims

1. A flow balance control method for a cigarette feeder linked with a cigarette making unit, characterized in that: include: Obtain the running time of the lifting belt, the material level in the quantitative tube of the wire feeder unit, and the material demand of the wire feeder corresponding to the cigarette making unit in the wire feeder unit; The operating state of the lifting belt is controlled based on the time when the material level in the quantitative tube exceeds the middle material level; and the frequency of the bottom belt of the storage cabinet is controlled based on the material demand of the cigarette making unit corresponding to the thread feeder. Specifically, when the cigarette making unit has a material demand, the number of material demands is determined at the time interval of the preset time pulse, and the operating percentage is obtained by the ratio of the lifting belt operating time and the number of material demands, and the frequency of the bottom belt of the storage cabinet is controlled and adjusted according to the operating percentage.

2. A flow balance control method for a cigarette feeder linked to a cigarette making unit as claimed in claim 1, characterized in that: When the material level in the quantitative tube is higher than the middle material level for more than a first preset time, the lifting belt is controlled to stop running; when the material level in the quantitative tube is lower than the middle material level for more than a second preset time, the lifting belt is controlled to run.

3. A flow balance control method for a cigarette thread feeder linked to a cigarette making unit as claimed in claim 1, characterized in that: When the operation percentage increases, the cabinet bottom carries the low-speed setting frequency experience value; when the operation percentage decreases, the cabinet bottom carries the low-speed setting frequency experience value.

4. A flow balance control method for a cigarette thread feeder linked to a cigarette making unit as claimed in claim 1, characterized in that: When the number of cigarette making machines to be fed increases, the frequency setting value of the bottom belt of the storage cabinet increases.

5. A flow balance control method for a cigarette thread feeder linked to a cigarette making unit as claimed in claim 1, characterized in that: When the continuous running time of the horizontal belt of the wire feeder reaches the set value, the frequency setting value of the bottom belt of the storage cabinet increases.

6. A flow balance control method for a cigarette thread feeder linked to a cigarette making unit as claimed in claim 1, characterized in that: According to the changes in the number of cigarette making machines that require materials, the horizontal belt frequency of the thread feeder is dynamically adjusted.

7. A flow balance control system for a cigarette feeder linked with a cigarette making unit, characterized in that: include: The data acquisition module is configured to obtain the running time of the lifting belt, the material level in the quantitative tube of the feeder unit, and the material demand situation of the feeder corresponding to the cigarette making unit in the feeder unit; The control module is configured to: control the operating state of the lifting belt based on the time when the material level in the quantitative tube exceeds the middle material level; and control the frequency of the bottom belt of the storage cabinet in the storage cabinet according to the material demand of the cigarette making group corresponding to the thread feeder. Specifically, when the cigarette making group has a material demand, the number of material demands is determined at the time interval of a preset time pulse, and the operating percentage is obtained by the ratio of the lifting belt operating time and the number of material demands, and the frequency of the bottom belt of the storage cabinet is controlled and adjusted according to the operating percentage.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the flow balance control method of a cigarette feeder linked with a cigarette making machine as described in any one of claims 1 to 6 are implemented.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the program, the steps of the flow balance control method of the cigarette feeder linked with the cigarette making machine group as described in any one of claims 1-6 are implemented.

10. A computer program product, characterized in that The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the flow balance control method of a cigarette feeder linked to a cigarette making unit as described in any one of claims 1 to 6 are implemented.

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