Control system and method of wind power cut tobacco feeder based on network control

Abstract

The invention provides a network control-based control system and method for a wind power cut tobacco feeder, and the system comprises a rolling and packaging workshop wind power cut tobacco feeding module, a cut tobacco production and storage module and a control unit, and the control unit is in network connection with the rolling and packaging workshop wind power cut tobacco feeding module and the cut tobacco production and storage module. The PLC of the rolling and packing workshop wind power cut tobacco feeding module is in network connection with the PLC of the cut tobacco production and storage module, a communication program is written on the PLC of the rolling and packing workshop wind power cut tobacco feeding module and used for sending a material supply signal of a cigarette making machine, and the material supply signal is transmitted to the PLC of the cut tobacco production and storage module through a network. A communication program is written on the PLC of the cut tobacco production and storage module and used for receiving a material supply signal sent by the PLC of the wind power cut tobacco feeding module of the wrapping workshop, converting the material supply signal into a control signal and controlling start and stop of a wind power cut tobacco feeder of the cut tobacco production and storage module. Network signals are adopted to control the wind power cut tobacco feeder, and compared with traditional sensor signals, the signals are more stable.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco, and in particular to a control system and method of a wind-driven tobacco feeder based on network control. Background Art

[0002] There are two ways to feed the wire from the wire making line to the cigarette making machine. One is to feed the wire through a trolley, and the other is to feed the wire through wind. Wind wire feeding is to connect the cigarette making machine and the wire feeder with a wire feeding tube, and the negative pressure generated by the fan sucks the tobacco in the wire feeder into the hopper of the cigarette making machine to complete the long-distance transportation of the tobacco. Wind wire feeding has the advantages of reliable operation and simple maintenance. At present, wind wire feeding is more commonly used in China.

[0003] The wire feeder is connected to multiple wire feeding tubes, which are connected to different cigarette making machines. The wire feeder rotates the turntable to send the tobacco to the wire feeding tube mouth. Under the action of negative pressure, the tobacco is sucked into the corresponding cigarette making machine. If the wire feeder turntable does not move, then after the tobacco is sucked away, there will be no new tobacco to replenish the wire feeding tube mouth, and the cigarette making machine will be out of material. Therefore, when the cigarette making machine needs wire, the wire feeding tube generates negative pressure, the wire feeder starts to rotate, and the tobacco in the wire feeder is continuously transported to the bottom of the wire suction tube, and then sucked into the cigarette making machine. When the cigarette making machine does not need material, in order to reduce crushing, the wire feeder turntable will also stop rotating. The signal for the cigarette making machine to request material is based on the high and low position photoelectric signal of the hopper. When it is lower than the low material level, it starts to request material, the fan in the fan room runs, the corresponding damper opens, the wire feeding tube generates negative pressure, and the tobacco on the wire feeder is sucked into the silo. When it is higher than the high material level, it stops requesting material, the corresponding damper closes, the negative pressure of the wire feeding tube disappears, and the tobacco will not be sucked away.

[0004] The rotation of the wire feeder turntable is controlled by the signal of the negative pressure sensor on the wire feeding tube. The negative pressure sensor is installed in the air duct near one end of the wire feeder. When the cigarette machine needs materials and generates negative pressure, the negative pressure sensor is activated and the signal is transmitted to the PLC, which then controls the rotation of the turntable. However, there is a lot of dust in the on-site environment, and the negative pressure sensor generally has a short lifespan and is prone to failure, requiring a large maintenance workload. Once a problem occurs, the cigarette machine will stop without materials, so a more effective control method is needed. Summary of the invention

[0005] The present invention proposes a control system and method for a wind-driven wire feeder based on network control. The present invention replaces the control method of controlling the rotation of the wire feeder turntable by relying on a negative pressure sensor signal, and proposes starting and stopping the wind-driven wire feeder based on network control.

[0006] Specifically, a control system and method of a wind-powered wire feeding machine based on network control are proposed, including: a wind-powered wire feeding module in a winding and packaging workshop, a wire storage module for a wire making line, and a control unit, wherein the control unit is connected to the wind-powered wire feeding module in the winding and packaging workshop and the wire storage module for a wire making line through a network;

[0007] The PLC controller of the wind-powered wire feeding module of the packaging workshop is connected to the PLC controller of the wire storage module of the wire making line through a network. A communication program is written on the PLC controller of the wind-powered wire feeding module of the packaging workshop to send a material request signal from the cigarette making machine, and the material request signal is transmitted to the PLC controller of the wire storage module of the wire making line through the network.

[0008] A communication program is written on the PLC controller of the wire storage module of the wire making line to receive the material request signal sent by the PLC controller of the wind wire feeding module of the winding workshop, and the material request signal is converted into a control signal to control the start and stop of the wind wire feeding machine of the wire storage module of the wire making line;

[0009] There are multiple types of material request signals, which correspond to different types of cigarette making machines. The start and stop of the wind-powered tobacco feeder turntable are adjusted according to different types of material request signals.

[0010] The control unit includes a human-machine interface, which is used to display in real time the material demand status of the wind wire feeding module in the winding workshop and the operating status of the wind wire feeding machine turntable. The human-machine interface also has a manual adjustment option.

[0011] As a preferred technical solution, the wind wire feeding module of the packaging workshop includes multiple wire feeding pipelines and multiple cigarette making machines. The multiple wire feeding pipelines are respectively connected to the multiple cigarette making machines, and the multiple cigarette making machines are respectively used to package cigarettes of different brands.

[0012] As a preferred technical solution, the wire storage module for silk making includes a wind-driven wire feeder and a wire storage room. The wind-driven wire feeder is connected to the wire storage room, and a plurality of wire feeding pipelines are connected to the wind-driven wire feeder.

[0013] As an optimal technical solution, each cigarette making machine is connected to two wire feeding pipelines, namely the first wire feeding pipeline and the second wire feeding pipeline. The first wire feeding pipeline is provided with a first wire suction gate valve, and the second wire feeding pipeline is provided with a second wire suction gate valve. The first wire suction gate valve and the second wire suction gate valve are connected to the wire making and wire storage module.

[0014] As an optimal technical solution, the material demand signal is converted into a control signal to control the start of the wind-powered wire feeding machine and simultaneously control the first wire suction gate valve to open. When the first wire suction gate valve is not opened, the second wire suction gate valve is controlled to open and the first wire suction gate valve is closed.

[0015] As a preferred technical solution, the wire feeding pipeline is also provided with an air supply valve. When the pneumatic wire feeder stops feeding the wire, the air supply valve is controlled to open.

[0016] As a preferred technical solution, when the first wire suction gate valve or the second wire suction gate valve is closed, a signal is transmitted to the air supply valve, and the air supply valve is closed.

[0017] As an optimal technical solution, it also includes a dust removal pipeline, the dust removal pipeline is connected to the wire feeding pipeline, and the dust removal pipeline is connected to a dust removal fan.

[0018] As a preferred technical solution, the dust removal pipeline includes a dust removal main pipe and a dust removal branch pipe, the dust removal branch pipe is connected to the wire feeding pipeline, the dust removal branch pipes converge into the dust removal main pipe, and the dust removal fan is connected to the dust removal main pipe.

[0019] As a preferred technical solution, the manual adjustment option includes function buttons that can control the start and stop of the cigarette making machine and the tobacco feeder.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] (1) The wind-driven wire feeder is controlled by network signals, which is more stable than traditional sensor signals, does not require mechanical devices, and runs smoothly. The network control has strong real-time signal performance, which improves work efficiency.

[0022] (2) There are two wire feeding pipelines connected to the cigarette making machine. When the wind-driven wire feeding machine receives the signal turntable and starts, the wire suction gate valve of the first wire feeding pipeline is opened first in sequence. If there is a pipeline failure, the wire suction gate valve of the second wire feeding pipeline is opened, and the wire suction gate valve of the first wire feeding pipeline is closed at the same time, so as to improve the working efficiency and avoid the cigarette making machine from idling.

[0023] (3) The wire feeding pipeline is equipped with an air supply valve. When the wind-driven wire feeding machine stops rotating, the tobacco in the wire feeding pipeline will be sucked back and broken. In order to prevent the tobacco from breaking, the air supply valve is opened to increase the wind strength, quickly send the tobacco in the pipe to the cigarette making machine, and reduce the breaking rate.

[0024] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the control system structure of a wind-powered wire feeding machine based on network control proposed in an embodiment of the present invention.

[0026] Explanation of the reference numerals: wind-driven wire feeding module 10 of the packaging workshop; first wire feeding pipeline 101; first wire suction gate valve 1011; second wire feeding pipeline 102; second wire suction gate valve 1021; cigarette making machine 103; wire storage module 20 for making wire; wind-driven wire feeding machine 201; control unit 30; air supply valve 40; dust removal branch pipe 50. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. In the description of the present invention, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0028] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0029] The term "including" and its variations used in the present invention are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0030] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". "Plurality" should be understood as two or more.

[0031] Example

[0032] like Figure 1 As shown, this embodiment proposes a control system and method for a wind wire feeding machine 201 based on network control, including: a wind wire feeding module 10 in a winding workshop, a wire storage module 20 for a wire making wire, and a control unit 30, wherein the control unit 30 is connected to the wind wire feeding module 10 in the winding workshop and the wire storage module 20 for a wire making wire through a network.

[0033] The PLC controller of the wind wire feeding module 10 in the packaging workshop is connected to the PLC controller of the wire storage module 20 of the wire making line through a network. A communication program is written on the PLC controller of the wind wire feeding module 10 in the packaging workshop to send the material request signal of the cigarette making machine 103, and the material request signal is transmitted to the PLC controller of the wire storage module 20 of the wire making line through the network.

[0034] A communication program is written on the PLC controller of the silk thread storage module 20 to receive the material request signal sent by the PLC controller of the wind wire feeding module 10 in the winding workshop, and convert the material request signal into a control signal to control the start and stop of the wind wire feeding machine 201 of the silk thread storage module 20.

[0035] Industrial Ethernet protocols such as Modbus TCP or EtherNet / IP can be used to realize the interaction between the two PLC controllers and the real-time communication between the cigarette making machine 103 and the wind-driven thread feeder 201. When the cigarette making machine 103 sends a material request signal, the network interface converts the signal into a digital command and transmits it to the wind-driven thread feeder 201. The original control of the wind-driven thread feeder 201 by the negative pressure sensor signal is replaced by the network interaction.

[0036] The wind wire feeding module 10 of the packaging workshop includes a plurality of wire feeding pipelines and a plurality of cigarette making machines 103 . The plurality of wire feeding pipelines are respectively connected to the plurality of cigarette making machines 103 . The plurality of cigarette making machines 103 are respectively used for packaging cigarettes of different brands.

[0037] The wire storage module 20 for making a silk thread comprises a wind-driven wire feeder 201 and a wire storage room. The wind-driven wire feeder 201 is connected to the wire storage room, and a plurality of wire feeding pipelines are connected to the wind-driven wire feeder 201 .

[0038] Here, one or more wire storage rooms and wind wire feeders 201 can be provided, and one wire storage room is provided with one wind wire feeder 201. The wire storage rooms can be provided according to the categories, and specifically, one-to-one correspondence can be made with tobacco brands.

[0039] In order to realize automatic control of the gate valve of the wire feeding tube, the system must know the brand of tobacco stored in the storage room corresponding to each wind-driven wire feeding machine 201 group and the equipment status (whether the conditions for leaving the cabinet are met), and grasp the brand data of cigarettes produced by the cigarette making machine 103 group in preparation or work. According to the correspondence between the wind-driven wire feeding machine 201 group and the rolling and connecting machine group and the wire storage room, the system uses the "brand" data as the correspondence to control the opening and closing of the corresponding wire feeding tube suction gate valve.

[0040] There are multiple types of material request signals, which correspond to different types of cigarette making machines 103. The start and stop of the turntable of the wind-driven wire feeding machine 201 is adjusted according to different types of material request signals. The start and stop here refer to starting or stopping. When the material request signal is received, the turntable of the wind-driven wire feeding machine 201 starts to rotate, and the signal is transmitted all the time. When the cigarette making machine 103 finishes requesting materials, the material request signal is interrupted. At this time, the turntable of the wind-driven wire feeding machine 201 stops rotating and the feeding ends. The material request signal corresponds to different types of cigarette making machines 103. A program is written to use the "brand" data of the corresponding brand of the cigarette making machine 103 as the corresponding relationship, and the signal is transmitted to the wind-driven wire feeding machine 201, and the opening and closing of the wire suction gate valve of the wire feeding pipeline are controlled at the same time.

[0041] Preferably, each cigarette making machine 103 can be connected to two wire feeding pipelines, namely the first wire feeding pipeline 101 and the second wire feeding pipeline 102. The first wire feeding pipeline 101 and the second wire feeding pipeline 102 can both be used as wire feeding pipelines to supply wire to the cigarette making machine 103. One of the wire feeding pipelines can be used as a spare pipeline, and when one of the pipelines fails, the spare pipeline can be opened.

[0042] The first wire feeding pipeline 101 is provided with a first wire suction gate valve 1011, and the second wire feeding pipeline 102 is provided with a second wire suction gate valve 1021. The first wire suction gate valve 1011 and the second wire suction gate valve 1021 are connected to the wire making wire storage module 20. When the material request signal is transmitted to the wind wire feeding machine 201, the material request signal is simultaneously converted into a control signal to control the first wire suction gate valve 1011 and the second wire suction gate valve 1021.

[0043] Preferably, the material request signal is converted into a control signal to control the start of the wind-powered wire feeder 201, and at the same time control the first wire suction gate valve 1011 to open. When the first wire suction gate valve 1011 is not opened, the second wire suction gate valve 1021 is controlled to open, and the first wire suction gate valve 1011 is closed. In specific implementation, by writing a program, the control signal first controls the first wire suction gate valve 1011 to open, for example, set it to open within 3S or 5S. If the first wire suction gate valve 1011 is not opened within the set threshold, a signal is transmitted to the control unit 30, and after receiving the return signal, the second wire suction gate valve 1021 is automatically opened, and a control signal is given to close the first wire suction gate valve 1011. This arrangement can ensure that only one wire feeding pipeline is working. The staff can inspect and repair the first wire feeding pipeline without delaying production.

[0044] Furthermore, the control unit 30 includes a human-machine interface, which is used to display in real time the material demand status of the wind wire feeding module 10 in the winding workshop and the operating status of the turntable of the wind wire feeding machine 201, present the interaction situation on the display screen in real time, monitor the system operation status in real time, and set the control parameters through the corresponding screen.

[0045] Preferably, the human-machine interface also has a manual adjustment option. When the cigarette machine 103 is produced or the brand is changed, the "working state" of the corresponding cigarette machine 103 group needs to be manually set in the human-machine interface parameter setting screen of the wire feeding tube valve automatic control system, including information such as the running time, the number of runs, and the production "cigarette brand" and other information. The control unit 30 after implementation has two working modes:

[0046] The first is the manual working mode. The operator sets the system control mode to 'manual' through the human-machine interface, and manually selects the corresponding air supply pipe suction gate valve open / close button according to the device screen to control the gate valve opening and closing, which can be controlled at any time.

[0047] The second is the automatic working mode. The operator sets the system control mode to 'automatic' through the human-machine interface. The system automatically controls the opening and closing of the wire feeding tube valve according to the acquired wire storage room status information, cigarette machine 103 production information and wind wire feeding machine 201 group correspondence.

[0048] Implementation method of automatic control system for start and stop of wind wire feeding machine 201 and wire feeding pipeline wire feeding valve:

[0049] The original wire feeder system is upgraded, and the start and stop of the wire feeder and the opening and closing status of the gate valve of the wire feeding pipeline are controlled by network signals. The start and stop status of the wire feeder and the status monitoring screen of the wire feeding pipeline suction gate valve and the production information monitoring screen of the cigarette making machine 103 are added to the human-machine interface of the control unit 30. In the program, the start and stop control module of the wind-powered wire feeder 201 and the automatic control module of the wire feeding pipeline suction gate valve are added. Digital input / output modules and relays are added to complete the control of the turntable solenoid valve of the wind-powered wire feeder 201 and the solenoid valve of the pneumatic wire suction gate valve of the wire feeding pipeline and the travel switch data collection.

[0050] The control unit 30 is connected to the wind wire feeding module 10 of the packaging workshop and the wire storage module 20 of the wire making line through the network for communication. In this way, the tobacco brand of the wire storage room and the status information of the wind wire feeding machine 201 can be obtained in real time, and the brand of the cigarette making machine 103 can be mastered. According to the corresponding relationship between the wind wire feeding machine 201 and the wire storage room and the corresponding relationship with the wire feeding pipeline, the start and stop of the turntable of the wind wire feeding machine 201 and the closing of the wire suction gate valve of the wire feeding pipeline are controlled. The entire wire making and cigarette rolling process proceeds smoothly, which can effectively improve production efficiency.

[0051] Preferably, the wire feeding pipeline is also provided with an air supply valve 40, and when the wind-powered wire feeder 201 stops feeding wire, the air supply valve 40 is controlled to open. At this time, the closing delay of the wire suction valve can be set by the program to be delayed before the stop of the turntable of the wind-powered wire feeder 201. When the wind-powered wire feeder 201 stops, there are still tobacco shreds in the wire feeding pipeline. If the wind power is stopped at this time, it is easy to cause the tobacco shreds to break and block the wire feeding pipeline. Therefore, by adding the air supply valve 40, the tobacco shreds in the wire feeding tube can be quickly sent out when the wire feeder stops rotating. The air supply valve 40 can be set at a position close to the wire suction valve, and the number of settings can be determined according to actual needs, which is not limited here. The dual wind power of the wire suction valve and the air supply valve 40 accelerates the rapid transportation of tobacco shreds in the tube.

[0052] Furthermore, it can be arranged that when the first wire suction gate valve 1011 or the second wire suction gate valve 1021 is closed, a signal is transmitted to the air supply valve 40, and then the air supply valve 40 is closed.

[0053] Preferably, it also includes a dust removal pipeline, which is connected to the wire feeding pipeline, and the dust removal pipeline is connected to a dust removal fan. Dust and tobacco are separated during the wire feeding process to improve the quality of tobacco. Further, the dust removal pipeline includes a dust removal main pipe and a dust removal branch pipe 50, the dust removal branch pipe 50 is connected to the wire feeding pipeline, the dust removal branch pipe 50 is integrated into the dust removal main pipe, and the dust removal fan is connected to the dust removal main pipe.

[0054] In the present invention, the material request signal is transmitted through the network. The network control signal is stable. In the conventional technology, the operation of the negative pressure sensor is greatly affected by the environment, the mechanical life is short, the failure rate is high, and the maintenance is laborious. However, as long as the network communication is normal, the network control signal is not affected by the environment, has no mechanical devices, operates smoothly, and has a low failure rate. Moreover, the network control signal has strong real-time performance. The negative pressure sensor detects the negative pressure and only acts when the negative pressure reaches a certain value, thereby controlling the rotation of the turntable of the wind-powered wire feeder 201. However, sometimes the wire feeding tube mouth is full of materials, which will affect the formation of negative pressure in the air duct. At this time, the negative pressure sensor often delays the action, affecting the transportation of tobacco to the cigarette making machine 103. The network control signal is synchronized with the wire feeding tube air door signal. When the cigarette making machine 103 requests wire, the wind-powered wire feeder 201 starts the turntable at the same time. As the turntable rotates, a thin layer of tobacco is based on the wind feeding tube mouth, which is convenient for the wire feeding tube to suck away the tobacco.

[0055] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A control system and method for a wind-powered wire feeding machine based on network control, characterized in that: include: A wind-driven wire feeding module, a wire storage module for a wire making line and a control unit in a winding and packaging workshop, wherein the control unit is connected to the wind-driven wire feeding module and the wire storage module for a wire making line in a network; The PLC controller of the wind-powered wire feeding module of the packaging workshop is connected to the PLC controller of the wire storage module of the wire making line through a network, and a communication program is written on the PLC controller of the wind-powered wire feeding module of the packaging workshop to send a material request signal of the cigarette making machine, and the material request signal is transmitted to the PLC controller of the wire storage module of the wire making line through the network; Writing a communication program on the PLC controller of the silk-making wire storage module to receive a material request signal sent by the PLC controller of the wind-powered wire feeding module in the winding workshop, and converting the material request signal into a control signal to control the start and stop of the wind-powered wire feeding machine of the silk-making wire storage module; The material request signal includes multiple types, and the multiple material request signals correspond to different types of cigarette making machines respectively. The start and stop of the wind-powered tobacco feeder turntable are adjusted according to the different types of material request signals; The control unit includes a human-machine interface, which is used to display in real time the material demand status of the wind wire feeding module in the winding workshop and the operating status of the wind wire feeding machine turntable. The human-machine interface is also provided with a manual adjustment option.

2. A control system and method for a wind-powered wire feeding machine based on network control according to claim 1, characterized in that: The wind wire feeding module of the packaging workshop includes multiple wire feeding pipelines and multiple cigarette making machines. The multiple wire feeding pipelines are respectively connected to the multiple cigarette making machines, and the multiple cigarette making machines are respectively used to package cigarettes of different brands.

3. A control system and method for a wind-powered wire feeding machine based on network control according to claim 2, characterized in that: The wire storage module for the silk making line includes a wind-driven wire feeder and a wire storage room. The wind-driven wire feeder is connected to the wire storage room, and the plurality of wire feeding pipelines are connected to the wind-driven wire feeder.

4. A control system and method for a wind-powered wire feeding machine based on network control according to claim 2, characterized in that: Each of the cigarette making machines is connected to two wire feeding pipelines, namely a first wire feeding pipeline and a second wire feeding pipeline. The first wire feeding pipeline is provided with a first wire suction gate valve, and the second wire feeding pipeline is provided with a second wire suction gate valve. The first wire suction gate valve and the second wire suction gate valve are connected to the wire making and wire storage module.

5. A control system and method for a wind-powered wire feeding machine based on network control according to claim 4, characterized in that: The material request signal is converted into a control signal to control the first wire suction gate valve to open. When the first wire suction gate valve is not opened, the second wire suction gate valve is controlled to open and the first wire suction gate valve is closed.

6. A control system and method for a wind-powered wire feeding machine based on network control according to claim 5, characterized in that: The wire feeding pipeline is also provided with an air supply valve, and when the pneumatic wire feeding machine stops feeding the wire, the air supply valve is controlled to open.

7. A control system and method for a wind-powered wire feeding machine based on network control according to claim 6, characterized in that: When the first wire suction gate valve or the second wire suction gate valve is closed, a signal is transmitted to the air supply valve, and the air supply valve is closed.

8. A control system and method for a wind-powered wire feeding machine based on network control according to any one of claims 2 to 7, characterized in that: It also includes a dust removal pipeline, which is connected to the wire feeding pipeline and connected to a dust removal fan.

9. A control system and method for a wind-powered wire feeding machine based on network control according to claim 8, characterized in that: The dust removal pipeline includes a dust removal main pipe and a dust removal branch pipe, the dust removal branch pipe is connected to the wire feeding pipeline, the dust removal branch pipes are connected to the dust removal main pipe, and the dust removal fan is connected to the dust removal main pipe.

10. A control system and method for a wind-powered wire feeding machine based on network control according to any one of claims 1 to 7, characterized in that: The manual adjustment options include function buttons that can control the start and stop of the cigarette making machine and the tobacco feeder.

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