Cigarette factory packaging machine compressed air automatic control system and method, medium and product

Abstract

The invention discloses an automatic compressed air control system and method for a cigarette factory packaging machine, a medium and a product. According to the system, an electric adjusting valve controls opening and closing of compressed air according to the opening and closing state of a gate circuit switch of the electric adjusting valve; when the controller detects that the current time is matched with the automatic stop time when the valve is opened, the controller sends a closing control instruction to the circuit switch, and when the controller detects that the current time is matched with the automatic opening time when the valve is closed, the controller sends an opening control instruction to the circuit switch; and the electric adjusting valve gate circuit switch responds to a closing or opening control instruction sent by the controller and triggers the electric adjusting valve to control closing or opening of compressed air. Compressed air supply is automatically started and stopped, so that pneumatic elements are prevented from being affected by air pressure to accelerate fatigue damage, the maintenance cost and extra energy consumption are reduced, synchronous operation of the pneumatic elements is ensured, the production cost and the labor cost are reduced, and the packaging and processing efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette packaging machinery and equipment, and in particular to an automatic control system, method, medium and product of compressed air for a cigarette factory packaging machine. Background Art

[0002] In the production and processing of cigarettes, the cigarette packaging process determines the final appearance and packaging quality of the product. High-quality packaging can ensure the integrity of cigarettes during transportation and storage, and will improve the user experience. In the cigarette packaging process, the compressed air control system of the packaging machine is responsible for providing power and support for the packaging process. Accurately controlling the supply of compressed air is crucial to ensuring packaging quality, optimizing production processes, and preventing material waste.

[0003] At present, the compressed air intake of the packaging machine is usually controlled by the valve of the air intake pipe of the machine body. The on and off of the packaging machine's air intake requires the operator to manually control the valve, which increases the manpower operation cost. When the equipment stops running or the equipment is shut down and the power is off, the operator may forget to close the control valve or close it incompletely, resulting in the continuous opening of compressed air, which will not only cause energy waste and increase production costs, but also some pneumatic components are prone to fatigue damage under continuous pressure, shortening their service life, increasing the maintenance cost of the equipment, and reducing the efficiency and quality of packaging processing. Summary of the invention

[0004] The present invention provides an automatic compressed air control system, method, medium and product for a cigarette factory packaging machine, so as to solve the problems of high labor operation cost when controlling the compressed air of the cigarette factory packaging machine, additional energy consumption due to untimely or incomplete closing of the compressed air, high production cost, high equipment maintenance cost, and low efficiency and low quality of packaging processing.

[0005] According to one aspect of an embodiment of the present invention, there is provided a compressed air automatic control system for a cigarette factory packaging machine, comprising: an electric regulating valve circuit switch, an electric regulating valve and a controller; the electric regulating valve is arranged at a compressed air source supply of a packaging machine main machine, the electric regulating valve circuit switch is electrically connected to the electric regulating valve, and the controller is electrically connected to the electric regulating valve circuit switch;

[0006] The electric regulating valve is used to control the opening and closing of compressed air according to the opening and closing state of the electric regulating valve circuit switch;

[0007] The controller is used for sending a closing control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic stopping time when the electric regulating valve is in an open state when the automatic stopping time is preset, and for sending an opening control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic opening time when the electric regulating valve is in a closed state when the automatic opening time is preset;

[0008] The electric regulating valve circuit switch is used to trigger the electric regulating valve to control closing of compressed air in response to a closing control instruction sent by the controller, and to trigger the electric regulating valve to control opening of compressed air in response to an opening control instruction sent by the controller.

[0009] According to another aspect of an embodiment of the present invention, there is also provided a method for automatically controlling compressed air for a packaging machine, which is executed by a controller configured in the automatic compressed air control system for a packaging machine according to any embodiment of the present invention, and comprises:

[0010] When the automatic stop time is preset, if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state, a closing control instruction is sent to the electric regulating valve circuit switch;

[0011] When the automatic opening time is preset, if when the electric regulating valve is in a closed state, it is detected that the current system time matches the automatic opening time, an opening control instruction is sent to the electric regulating valve circuit switch.

[0012] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the automatic control method of compressed air for a packaging machine described in any embodiment of the present invention when executed.

[0013] According to another aspect of an embodiment of the present invention, a computer program product is provided, comprising computer instructions, wherein when the computer instructions are executed by a processor, the steps of the method described in any embodiment of the present invention are implemented.

[0014] The compressed air automatic control system of the cigarette factory packaging machine of the embodiment of the present invention comprises: an electric regulating valve circuit switch, an electric regulating valve and a controller; the electric regulating valve is arranged at the compressed air source supply of the packaging machine main machine, the electric regulating valve circuit switch is electrically connected to the electric regulating valve, and the controller is electrically connected to the electric regulating valve circuit switch; the electric regulating valve is used to control the opening and closing of compressed air according to the opening and closing state of the electric regulating valve circuit switch; the controller is used to send a closing control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state when the automatic stop time is preset, and to send an opening control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic opening time when the electric regulating valve is in the closed state when the automatic opening time is preset; the electric regulating valve circuit switch is used to trigger the electric regulating valve to control the closing of compressed air in response to the closing control instruction sent by the controller, and to trigger the electric regulating valve to control the opening of compressed air in response to the opening control instruction sent by the controller. By automatically opening and closing the compressed air supply according to the preset start and stop times, the pneumatic components are prevented from fatigue damage caused by the air pressure when not in operation, which reduces maintenance costs, ensures the synchronous operation of pneumatic components, avoids additional energy consumption, reduces manual operation links, reduces production costs and labor costs, and improves the efficiency and quality of packaging processing.

[0015] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of a compressed air automatic control system for a cigarette factory packaging machine provided according to the first embodiment of the present invention;

[0018] Figure 2 is a flow chart of a method for automatically controlling compressed air of a cigarette factory packaging machine according to a second embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation of a compressed air control solenoid valve applicable to an embodiment of the present invention;

[0020] Figure 4 This is a diagram of an installation scenario of a compressed air control solenoid valve applicable to an embodiment of the present invention;

[0021] Figure 5 The invention is an electrical schematic diagram of an automatic compressed air control system for a cigarette factory packaging machine to which the embodiment of the invention is applicable. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Embodiment 1

[0025] Figure 1 This is a schematic structural diagram of a compressed air automatic control system for a cigarette factory packaging machine provided in Example 1 of the present invention. This embodiment is applicable to the situation of automatically controlling the compressed air supply of a cigarette factory packaging machine.

[0026] Correspondingly, such as Figure 1 As shown, the system includes:

[0027] An electric regulating valve circuit switch 110, an electric regulating valve 120 and a controller 130; the electric regulating valve 120 is arranged at the compressed air source supply of the packaging machine main engine, the electric regulating valve circuit switch 110 is electrically connected to the electric regulating valve 120, and the controller 130 is electrically connected to the electric regulating valve circuit switch 110;

[0028] The electric regulating valve 120 is used to control the opening and closing of compressed air according to the opening and closing state of the electric regulating valve circuit switch 110;

[0029] The controller 130 is used to send a closing control instruction to the electric regulating valve circuit switch 110 if it is detected that the current system time matches the automatic stopping time when the electric regulating valve 120 is in an open state when the automatic stopping time is preset, and to send an opening control instruction to the electric regulating valve circuit switch 110 if it is detected that the current system time matches the automatic opening time when the electric regulating valve 120 is in a closed state when the automatic opening time is preset;

[0030] The electric regulating valve circuit switch 110 is used to trigger the electric regulating valve 120 to control closing of compressed air in response to a closing control instruction sent by the controller 130 , and to trigger the electric regulating valve 120 to control opening of compressed air in response to an opening control instruction sent by the controller 130 .

[0031] In the embodiment of the present invention, the electric regulating valve circuit switch can be specifically understood as: an electronic switch that can control the opening and closing state of the electric regulating valve according to the received control signal (such as the instruction from the controller), thereby realizing the connection or disconnection of the circuit. Electrical connection refers to the electrical connection between devices through wires, interfaces, connectors or interfaces. The electric regulating valve can be specifically understood as: a valve that can be electrically controlled and is used to control the supply of compressed air. The electric regulating valve is connected to the controller through the electric regulating valve circuit switch. When the electric regulating valve circuit switch receives the instruction of the controller and is triggered, the electric regulating valve will open or close the valve according to the opening and closing of the circuit path, thereby controlling the supply of compressed air. The controller can be specifically understood as: a device used to control the operation of other devices according to a preset logic or program, such as a programmable logic controller (PLC) or an industrial computer.

[0032] Specifically, when the controller 130 detects that the current time matches the preset automatic stop time, the controller 130 sends a closing instruction to the electric regulating valve circuit switch 110. After receiving the instruction, the electric regulating valve circuit switch 110 triggers the electric regulating valve 120 to close and cuts off the compressed air supply. When the controller 130 detects that the current time matches the preset automatic opening time, the controller 130 sends an opening instruction to the electric regulating valve circuit switch 110. After receiving the instruction, the electric regulating valve circuit switch 110 triggers the electric regulating valve 120 to open and restore the compressed air supply.

[0033] Generally speaking, in the actual production process, the production task may still be in progress before the equipment stops completely. Therefore, the automatic stop function can be designed to slightly delay the closing time to ensure that the production process can smoothly transition to a completely stopped state. Specifically, when the controller 130 detects that the current time matches the preset automatic stop time, it does not immediately send a closing command, but sets a short delay (for example, 30 seconds to 1 minute) to ensure that the current production task can be completed and avoid production interruptions or quality problems caused by sudden stops. During the delay period, the system can gradually reduce the production speed or reduce the supply of compressed air to achieve a smooth transition. For example, by adjusting the opening of the electric regulating valve 120, the flow of compressed air is gradually reduced until it is completely closed. By delaying the closing time, the system can ensure that all ongoing production tasks can be completed smoothly, while avoiding equipment damage or production waste caused by sudden stops.

[0034] Accordingly, in order to ensure that production can be started quickly and provide a stable airflow, the automatic start function can be designed as a pre-start mode, specifically: when the controller 130 detects that the current time is close to the preset automatic start time (for example, 1 to 2 minutes in advance), an opening instruction is sent in advance to the electric regulating valve circuit switch 110. This ensures that the compressed air supply system has enough time to preheat and stabilize, thereby providing a stable airflow for production. In the pre-start phase, the system can gradually increase the supply of compressed air until the stable airflow required for production is reached. For example, by gradually adjusting the opening of the electric regulating valve 120, the flow rate of compressed air is gradually increased to the set value. By starting in advance, the system can provide a stable airflow before the formal production starts, thereby reducing the production startup time, improving production efficiency, and ensuring the stability of production.

[0035] Among them, the start time and stop time of the compressed air can be determined according to the original planned scheduling time, and can also be dynamically adjusted according to the production progress and equipment maintenance cycle. Specifically, the controller 130 can be integrated with the host computer system, such as the Manufacturing Execution System (MES), and sensors can be installed on the packaging production line to collect the number of completed cigarettes in real time, and the sensor data can be transmitted to the MES system through the controller 130 to monitor the production progress.

[0036] The MES system calculates the deviation between the actual number of completed cigarettes and the planned number based on the number of cigarettes completed, determines the possible completion status of the production plan according to the existing production process, such as overdue, on schedule or ahead of schedule, and dynamically adjusts the order of the production plan according to the production progress deviation. For example, an intelligent scheduling algorithm (such as a priority algorithm or a genetic algorithm) is used to dynamically adjust the order of production tasks, assigning higher priorities to urgent production tasks, tasks with approaching delivery dates, tasks that may be overdue, or tasks with a large number of products to be produced, and sorting tasks according to priority. Tasks with higher priorities are scheduled for production first. For tasks with the same priority, they can be further sorted according to the resource utilization of each task or the production intensity supported by the equipment operating status.

[0037] According to the adjusted task sequence, update the start and completion time of each task in the production plan. For tasks completed ahead of schedule, shorten the scheduling time and release equipment resources in advance. Typically, the new start time (compressed air start time) = original start time + daily average early completion time / 2, and the new completion time (compressed air stop time) = original completion time - daily average early completion time / 2.

[0038] For delayed tasks, extend the scheduling time, or adjust the scheduling of subsequent tasks to ensure the achievement of the overall production goals. Typically, the new start time (compressed air start time) = original start time - average daily delayed completion time / 2, and the new completion time (compressed air stop time) = original completion time + average daily delayed completion time / 2. Among them, the original start time, new start time, original completion time and new completion time are the start time and completion time of the task on that day, respectively. In addition, if there is an equipment maintenance plan scheduled in advance on that day, the impact of equipment maintenance on the start time and completion time must be considered on the basis of the above calculation results, that is, the new completion time (compressed air stop time) = original completion time + expected maintenance time on that day / 2, and the new start time (compressed air start time) = original start time - expected maintenance time on that day / 2. Among them, the compensation coefficient 2 of the above time offset can be dynamically adjusted according to the priority of the remaining production plans and the scheduling situation to reduce the production interval caused by switching between production tasks and improve the resource utilization of equipment. The dynamically adjusted production plan and shift schedule will be published to the MES system based on the production progress, equipment maintenance plan and original production plan to ensure that each department and production unit can obtain the latest information in a timely manner and automatically start the corresponding packaging machine for packaging production according to the adjusted production plan and shift schedule. The order of production tasks will be dynamically adjusted according to the production progress deviation and equipment maintenance plan, and the shift schedule will be recalculated to optimize the production process and improve production efficiency and resource utilization.

[0039] The compressed air automatic control system of the cigarette factory packaging machine of the embodiment of the present invention comprises: an electric regulating valve circuit switch, an electric regulating valve and a controller; the electric regulating valve is arranged at the compressed air source supply of the packaging machine main machine, the electric regulating valve circuit switch is electrically connected to the electric regulating valve, and the controller is electrically connected to the electric regulating valve circuit switch; the electric regulating valve is used to control the opening and closing of compressed air according to the opening and closing state of the electric regulating valve circuit switch; the controller is used to send a closing control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state when the automatic stop time is preset, and to send an opening control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic opening time when the electric regulating valve is in the closed state when the automatic opening time is preset; the electric regulating valve circuit switch is used to trigger the electric regulating valve to control the closing of compressed air in response to the closing control instruction sent by the controller, and to trigger the electric regulating valve to control the opening of compressed air in response to the opening control instruction sent by the controller. By automatically opening and closing the compressed air supply according to the preset start and stop times, the pneumatic components are prevented from fatigue damage caused by the air pressure when not in operation, which reduces maintenance costs, ensures the synchronous operation of pneumatic components, avoids additional energy consumption, reduces manual operation links, reduces production costs and labor costs, and improves the efficiency and quality of packaging processing.

[0040] Optionally, based on the above embodiments, the electric regulating valve circuit switch is a control relay, and the power supply end of the control relay is electrically connected to the controller; the normally open contact of the control relay is electrically connected to the power supply end of the electric regulating valve;

[0041] The controller is specifically configured to, when an automatic stop time is preset, send a low level signal to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in an open state, so as to trigger the control relay to disconnect and cause the electric regulating valve to lose power; and

[0042] When the automatic opening time is preset, if the current system time is detected to match the automatic opening time when the electric regulating valve is in a closed state, a high-level signal is sent to the electric regulating valve circuit switch to trigger the control relay to energize the electric regulating valve after it is turned on.

[0043] Specifically, when the controller detects that the current time matches the preset automatic stop time, the controller sends a low-level signal to the control relay to de-energize the relay coil, disconnect the normally open contact, disconnect the power supply circuit of the electric regulating valve, and after the electric regulating valve loses power, the valve closes and cuts off the compressed air supply. When the controller detects that the current time matches the preset automatic start time, the controller sends a high-level signal to the circuit switch, energizes the relay coil, closes the normally open contact, connects the power supply circuit of the electric regulating valve, and after the electric regulating valve is energized, the valve opens and restores the compressed air supply.

[0044] In addition, when the system is powered off, the coil of the relay loses power and the normally open contact is disconnected. The electric regulating valve automatically closes due to the loss of power in the relay, thereby cutting off the compressed air supply. The electrical isolation function is achieved through the relay, ensuring the safe isolation of the control signal from the main circuit, avoiding electrical failures, automatically cutting off the gas supply when the power is off, preventing the equipment from being damaged by airflow impact, extending the life of the equipment, ensuring the stability of the production process and the reliability of the equipment, reducing maintenance costs, ensuring the synchronous operation of pneumatic components, avoiding additional energy consumption, reducing manual operation links, reducing production costs and labor costs, and improving the efficiency and quality of packaging processing.

[0045] Further, based on the above embodiments, the automatic compressed air control system of the cigarette factory packaging machine may also include:

[0046] A touch screen, the touch screen is electrically connected to the controller; the touch screen is arranged on the body of the packaging machine host;

[0047] The touch screen is used to set the automatic stop time and the automatic start time, and send the set automatic stop time and the automatic start time to the controller for storage.

[0048] Specifically, in the compressed air automatic control system of the cigarette factory packaging machine, a touch screen can be added as the human-machine interface of the system. The touch screen is connected to the controller through an electrical connection and installed on the body of the packaging machine host, which is convenient for operators to operate and monitor directly next to the equipment. The operator can input or adjust the automatic stop time and automatic start time of the compressed air system through the touch screen interface. These times can be flexibly set according to the production plan, equipment maintenance cycle or actual production needs, or the optimized production plan and shift schedule can be generated through the MES system.

[0049] The touch screen displays the automatic stop time and automatic start time set by the operator or the optimized production plan and shift schedule generated by the MES system on the touch screen, and sends the set automatic stop time and automatic start time or the optimized shift schedule to the controller. The controller receives and stores these data and controls the opening and closing of the electric regulating valve according to these time parameters. By adding a touch screen to the system, the operator can easily set and adjust the automatic stop and start time without directly operating the controller, which improves the flexibility and convenience of the system. At the same time, as a human-computer interaction interface, the touch screen can display the system status in real time, facilitate monitoring and management, and improve the efficiency and quality of packaging processing.

[0050] Further, based on the above embodiments, the touch screen is also specifically used to provide a manual switch control button for user display, and in response to the user's triggering selection of the manual switch control button, generate a first manual control instruction and send it to the controller;

[0051] The controller is further configured to generate a closing control instruction or an opening control instruction matching the first manual control instruction according to the received first manual control instruction, and send the closing control instruction or the opening control instruction to the electric regulating valve circuit switch.

[0052] In the embodiment of the present invention, the first manual control instruction can be specifically understood as: a high-level or low-level instruction signal generated by the touch screen according to the trigger selection of the operator (such as pressing the "open" or "close" button). The instruction signal is used to instruct the controller to perform manual operation to directly control the opening or closing of the electric regulating valve without relying on the automatic control logic.

[0053] Specifically, a manual control button is provided on the touch screen for directly controlling the opening and closing of the electric regulating valve. When the operator triggers the manual switch control button, the touch screen generates a first manual control instruction and sends it to the controller. The controller generates a corresponding closing control instruction (for closing the valve) or opening control instruction (for opening the valve) according to the received manual control instruction, and sends it to the electric regulating valve circuit switch, thereby realizing direct control of the valve. By providing a manual control function through the touch screen, the operator can directly control the opening and closing of the compressed air system without relying on the automatic control logic, which improves the flexibility of the system's compressed air control and the system's emergency handling capabilities. In particular, when the automatic control mode cannot meet the needs or a failure occurs and maintenance and debugging of the equipment are required, the operator can quickly switch to the manual mode to ensure the continuity and stability of production.

[0054] Further, on the basis of the above embodiments, the automatic compressed air control system of the cigarette factory packaging machine may further include: a physical manual switch, the physical manual switch is electrically connected to the controller; the physical manual switch is arranged on the body of the packaging machine host;

[0055] The physical manual switch is used to generate a second manual control instruction and send it to the controller in response to a manual control operation of the user;

[0056] The controller is further configured to generate a closing control instruction or an opening control instruction matching the second manual control instruction according to the received second manual control instruction, and send the closing control instruction or the opening control instruction to the electric regulating valve circuit switch.

[0057] In the embodiment of the present invention, the second manual control instruction can be specifically understood as a signal generated by a physical manual switch (such as a button or a switch), which is used to directly control the opening or closing of the electric regulating valve.

[0058] Specifically, when the operator operates through the physical manual switch, the instruction is sent to the controller, and the controller generates the corresponding closing or opening control instruction according to the instruction and sends it to the electric regulating valve circuit switch. By introducing the physical manual switch and the second manual control instruction, the system provides a more flexible operation mode. Especially in an emergency or when the touch screen is unavailable, the operator can directly control the equipment through the physical switch to ensure the continuity and safety of production, and enhance the reliability and convenience of operation of the system.

[0059] In particular, when the first manual control instruction and the second manual control instruction appear at the same time, the system can prioritize the physical manual switch (second manual control instruction) over the touch screen (first manual control instruction) according to the preset priority, so as to ensure that the operator can quickly and directly control the equipment on site. In addition, the system can design an interlocking mechanism for the two manual control modes. When one manual control mode is activated, the other mode is automatically disabled. Alternatively, the current control mode (manual control mode 1, manual control mode 2 or automatic control mode) is displayed on the touch screen, and the operator is prompted with the current control priority for the operator to select the control strategy by himself. Through reasonable priority settings or interlocking mechanisms, operation conflicts are avoided and the overall performance of the system is improved.

[0060] Optionally, based on the above embodiments, the controller is a programmable controller;

[0061] Among them, the input pin of the programmable controller is used to connect to the touch screen or the physical manual switch, and the output pin of the programmable controller is used to connect to the electric regulating valve circuit switch.

[0062] Specifically, the controller can be a programmable controller, and the input pin of the PLC connected to the touch screen receives signals from the touch screen (including control instructions input by the operator, such as automatic stop time, automatic start time or manual control instructions), and the input pin of the PLC connected to the physical manual switch receives signals from the physical manual switch. The output pin of the PLC is connected to the electric regulating valve circuit switch, which is used to send control instructions (such as closing control instructions (closing the valve) or opening control instructions (opening the valve)) to the electric regulating valve circuit switch, thereby realizing the control of the compressed air supply. By using the PLC as a controller, the input and output pins are used to interact with external devices to achieve precise control of the compressed air of the packaging machine during the production process. The input pin of the PLC can receive signals from different operation interfaces to ensure that the operator can choose the most appropriate control method according to actual needs. At the same time, the output pin of the PLC can accurately control the opening and closing of the electric regulating valve, ensuring the automation and stability of the compressed air supply, and improving the efficiency and quality of the packaging process.

[0063] Embodiment 2

[0064] Figure 2 This is a flow chart of a method for automatically controlling compressed air for a cigarette factory packaging machine provided in the second embodiment of the present invention. This embodiment is applicable to the case of automatically controlling the compressed air supply for a cigarette factory packaging machine. The method can be executed by a controller configured in the automatic compressed air control system of the packaging machine.

[0065] Correspondingly, such as Figure 2 As shown, the method includes:

[0066] S210: When the automatic stop time is preset, if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state, a closing control instruction is sent to the electric regulating valve circuit switch.

[0067] S220: When the automatic opening time is preset, if it is detected that the current system time matches the automatic opening time when the electric regulating valve is in a closed state, an opening control instruction is sent to the electric regulating valve circuit switch.

[0068] Specifically, when the automatic stop time and automatic start time are preset, when the system is running, the controller will monitor the current time in real time and compare it with the preset time. If the current time matches the preset automatic stop time, and the electric regulating valve is in the open state at this time, the controller will send a closing control instruction to the electric regulating valve circuit switch, triggering the valve to close and cut off the supply of compressed air. Correspondingly, if the current time matches the preset automatic start time, and the electric regulating valve is in the closed state, the controller will send an opening control instruction to the circuit switch, triggering the valve to open and restore the supply of compressed air.

[0069] Generally speaking, in the actual production process, it still takes a certain amount of time to complete the current production task before the equipment stops completely. Therefore, the automatic stop function can be designed to slightly delay the closing time to ensure that the production process can smoothly transition to a completely stopped state. Specifically, when the controller detects that the current time matches the preset automatic stop time, it does not immediately send a closing command, but sets a short delay (for example, 30 seconds to 1 minute) to ensure that the current production task can be completed and avoid production interruptions or quality problems caused by sudden stops. During the delay period, the system can gradually reduce the production speed or reduce the supply of compressed air to achieve a smooth transition. For example, by adjusting the opening of the electric regulating valve, the flow of compressed air is gradually reduced until it is completely closed. By delaying the closing time, the system can ensure that all ongoing production tasks can be completed smoothly, while avoiding equipment damage or production waste caused by sudden stops.

[0070] Accordingly, in order to ensure that production can be started quickly and provide a stable airflow, the automatic start function can be designed as a pre-start mode, specifically: when the controller detects that the current time is close to the preset automatic start time (for example, 1 to 2 minutes in advance), an opening instruction is sent in advance to the electric regulating valve circuit switch. This ensures that the compressed air supply system has enough time to preheat and stabilize, thereby providing a stable airflow for production. In the pre-start phase, the system can gradually increase the supply of compressed air until the stable airflow required for production is achieved. For example, by gradually adjusting the opening of the electric regulating valve, the flow rate of compressed air is gradually increased to the set value. By starting in advance, the system can provide a stable airflow before the formal production starts, thereby reducing the production startup time, improving production efficiency, and ensuring the stability of production.

[0071] Among them, the start and stop time of compressed air can be determined according to the original planned shift time, and can also be dynamically adjusted according to the production progress and equipment maintenance cycle. Specifically, the controller can be integrated with the host computer system, such as MES, and sensors can be installed on the packaging production line to collect the number of completed cigarettes in real time. The sensor data can be transmitted to the MES system through the controller to monitor the production progress.

[0072] The MES system calculates the deviation between the actual number of completed cigarettes and the planned number based on the number of cigarettes completed, and determines the possible completion status of the production plan according to the existing production process, such as overdue, on schedule or ahead of schedule, and dynamically adjusts the order of the production plan according to the production progress deviation. For example, an intelligent scheduling algorithm (such as a priority algorithm or a genetic algorithm) is used to dynamically adjust the order of production tasks, and a higher priority is given to urgent production tasks, tasks with approaching delivery dates, tasks that may be overdue, or tasks with a large number of products to be produced. Tasks are sorted according to priority, and tasks with higher priority are scheduled for production first. For tasks with the same priority, they can be further sorted according to the resource utilization of each task or the production intensity supported by the equipment operating status.

[0073] According to the adjusted task sequence, update the start and completion time of each task in the production plan. For tasks completed ahead of schedule, shorten the scheduling time and release equipment resources in advance. Typically, the new start time (compressed air start time) = original start time + daily average early completion time / 2, and the new completion time (compressed air stop time) = original completion time - daily average early completion time / 2.

[0074] For delayed tasks, extend the scheduling time, or adjust the scheduling of subsequent tasks to ensure the achievement of the overall production goals. Typically, the new start time (compressed air start time) = original start time - average daily delayed completion time / 2, and the new completion time (compressed air stop time) = original completion time + average daily delayed completion time / 2. Among them, the original start time, new start time, original completion time and new completion time are the start time and completion time of the task on that day, respectively. In addition, if there is an equipment maintenance plan scheduled in advance on that day, the impact of equipment maintenance on the start time and completion time must be considered on the basis of the above calculation results, that is, the new completion time (compressed air stop time) = original completion time + expected maintenance time on that day / 2, and the new start time (compressed air start time) = original start time - expected maintenance time on that day / 2. Among them, the compensation coefficient 2 of the above time offset can be dynamically adjusted according to the priority of the remaining production plans and the scheduling situation to reduce the production interval caused by switching between production tasks and improve the resource utilization of equipment. The dynamically adjusted production plan and shift schedule will be published to the MES system based on the production progress, equipment maintenance plan and original production plan to ensure that each department and production unit can obtain the latest information in a timely manner and automatically start the corresponding packaging machine for packaging production according to the adjusted production plan and shift schedule. The order of production tasks will be dynamically adjusted according to the production progress deviation and equipment maintenance plan, and the shift schedule will be recalculated to optimize the production process and improve production efficiency and resource utilization.

[0075] The technical solution of the embodiment of the present invention is that when the automatic stop time is preset, if the current system time is detected to match the automatic stop time when the electric regulating valve is in the open state, a closing control instruction is sent to the electric regulating valve circuit switch; when the automatic opening time is preset, if the current system time is detected to match the automatic opening time when the electric regulating valve is in the closed state, an opening control instruction is sent to the electric regulating valve circuit switch. By automatically opening and closing the compressed air supply according to the preset start and stop time, fatigue damage caused by air pressure in the non-working state of the pneumatic components is prevented, maintenance costs are reduced, synchronous operation of pneumatic components is ensured, additional energy consumption is avoided, manual operation links are reduced, production costs and labor costs are reduced, and the efficiency and quality of packaging processing are improved.

[0076] Optionally, based on the above embodiments, when the automatic stop time is preset, if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state, a closing control instruction is sent to the electric regulating valve circuit switch, which may specifically include:

[0077] When the automatic stop time is preset, if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state, a low level signal is sent to the electric regulating valve circuit switch to trigger the control relay to disconnect and cause the electric regulating valve to lose power;

[0078] When the automatic opening time is preset, if the current system time is detected to match the automatic opening time when the electric regulating valve is in the closed state, an opening control instruction is sent to the electric regulating valve circuit switch, which may specifically include:

[0079] When the automatic opening time is preset, if the current system time is detected to match the automatic opening time when the electric regulating valve is in a closed state, a high-level signal is sent to the electric regulating valve circuit switch to trigger the control relay to energize the electric regulating valve after closing.

[0080] Specifically, when the system pre-sets the automatic stop time, the controller will monitor the current time in real time. If the current time is consistent with the automatic stop time and the electric regulating valve is in the open state, the controller will send a low-level signal to the circuit switch of the electric regulating valve, triggering the control relay to disconnect, causing the electric regulating valve to lose power and close, thereby cutting off the compressed air supply. Correspondingly, when the system pre-sets the automatic opening time, the controller will detect whether the current time matches the automatic opening time. If they match and the electric regulating valve is in the closed state, the controller will send a high-level signal to trigger the control relay to close, so that the electric regulating valve is powered and opened, and the compressed air supply is restored. The electrical isolation function is realized through the relay, which ensures the safe isolation of the control signal from the main circuit, avoids electrical failures, ensures the stability of the production process and the reliability of the equipment, reduces maintenance costs, ensures the synchronous operation of pneumatic components, avoids additional energy consumption, reduces manual operation links, reduces production costs and labor costs, and improves the efficiency and quality of packaging processing.

[0081] Further, based on the above embodiments, the automatic control method of compressed air for a cigarette factory packaging machine may further include:

[0082] When the automatic stop time and the automatic start time sent by the touch screen are received, the automatic stop time and the automatic start time are stored locally.

[0083] Specifically, after the operator sets the automatic stop time and automatic start time through the touch screen, when the controller receives these time parameters sent by the touch screen, it will store them in the local memory, and control the opening and closing of the electric regulating valve according to these stored time parameters during subsequent operation.

[0084] In addition, when the controller receives the optimized production plan and shift schedule sent by the integrated MES system, it will store it in the local memory, and control the opening and closing of the electric regulating valve according to these stored shift schedules during the subsequent operation, and display the stored optimized production plan and specific shift schedules to the operator on the touch screen. Through local storage, the system can ensure that the set time parameters or optimized production plans and shift schedules are still valid after the system is powered off or restarted, which improves the reliability and stability of the system and reduces the time and workload of operators for repeated settings. The local storage function enhances the autonomy of the system. Even in the absence of external input, the controller can automatically perform tasks according to the pre-stored time parameters, ensuring the continuity and efficiency of the production process and improving the efficiency and quality of packaging processing.

[0085] Further, based on the above embodiments, the automatic control method of compressed air for a cigarette factory packaging machine may further include:

[0086] When receiving a first manual control instruction generated by a user triggering and selecting a manual switch control button on the touch screen, generating a closing control instruction or an opening control instruction matching the first manual control instruction, and sending the closing control instruction or the opening control instruction to the electric regulating valve circuit switch;

[0087] or,

[0088] When receiving a second manual control instruction triggered by a user performing a manual control operation on a physical manual switch, a closing control instruction or an opening control instruction matching the second manual control instruction is generated, and the closing control instruction or the opening control instruction is sent to the electric regulating valve circuit switch.

[0089] Specifically, after the operator presses the "open" or "close" button on the touch screen, the controller receives the triggered first manual control instruction, generates a corresponding closing control instruction or opening control instruction according to the instruction, and sends these instructions to the circuit switch of the electric regulating valve, thereby controlling the opening or closing of the electric regulating valve. Alternatively, when the user performs a manual control operation through the physical manual switch, the controller also receives the second manual control instruction triggered by the physical switch, generates a corresponding closing or opening control instruction, and sends it to the circuit switch to achieve direct control of the valve. By supporting both touch screen and physical manual switch control methods, the controller provides operators with a more flexible and convenient way to control compressed air for packaging machines. During normal operation, equipment maintenance or debugging of equipment, operators can perform intuitive operations through the touch screen, and in emergency situations or when the touch screen is unavailable, the physical manual switch provides a fast and direct means of control. This dual control mechanism not only improves the reliability and response speed of the system, but also enhances the safety and stability of operation, reduces production interruptions caused by equipment failures or operational errors, and improves overall production efficiency and equipment utilization.

[0090] Specific application scenarios

[0091] In the cigarette production process, cigarette packaging is the key to ensure product integrity and attractiveness. Accurate and efficient compressed air control is essential for the cigarette packaging process. At present, the total compressed air intake of the main machine of the cigarette factory packaging machine is usually controlled by a manual valve on the main air intake pipe of the machine body. The operator needs to manually control the valve on and off to achieve the on and off of the total air intake. Not only does it increase the labor cost of compressed air control of the packaging machine, but it also brings hidden dangers in the control of compressed air. In particular, when the equipment stops running or the equipment is shut down and the power is off, the operator may forget to close the control valve or close the valve incompletely, resulting in continuous opening of compressed air, causing continuous supply of compressed air, consuming additional energy, and increasing production costs; some pneumatic components may be prone to fatigue damage under continuous pressure, shortening their service life. For example, seals may deform and age due to long-term pressure, causing leakage, increasing the maintenance cost of the equipment and reducing the efficiency and quality of packaging processing.

[0092] To solve the above problems, an embodiment of the present invention proposes a compressed air automatic control system for a cigarette factory packaging machine, which is composed of a Siemens PLC, a touch screen, an electric regulating valve Y1 and other parts. It can automatically control the opening and closing of compressed air according to the production suspension and start time, thereby effectively saving energy. Figure 3 This is a schematic diagram of the installation of a compressed air control solenoid valve applicable to an embodiment of the present invention. Figure 4 This is a diagram of a compressed air control solenoid valve installation scenario applicable to an embodiment of the present invention. Figure 4 and Figure 3 Correspondingly, Figure 5 This is an electrical schematic diagram of a compressed air automatic control system for a cigarette factory packaging machine applicable to an embodiment of the present invention. Taking the GDX1 packaging machine as an example, the system can be specifically:

[0093] A Siemens S7-200 PLC is installed in the GDX1 packaging electromechanical cabinet. The PLC is powered by a 24-volt positive power line (L1 terminal is connected to +24V) and a 24-volt negative power line (M terminal is connected to -24V). A solenoid valve Y1 (compressed air control solenoid valve) is installed at the compressed air source supply of the GDX1 packaging machine host to control the opening and closing of compressed air. The positive power line of the electric valve is connected to the normally open contact of relay K1, the negative power line is connected to the 24-volt negative power line, and the common end of the normally open contact of relay K1 is connected to the 24-volt positive power line. A control relay K1 is installed in the packaging electromechanical cabinet. The A1 end of the control relay K1 is connected to the S7-200 PLC output terminal Q0.0, and the A2 end of the control relay K1 is connected to the 24-volt negative power line. A touch screen is installed on the packaging machine body, the touch screen is powered by a 24V positive power line and a 24V negative power line, and the COM1 port (Communication Port 1) is connected to the COM1 port on the S7-200 PLC, and communication control is performed through the RS485 protocol. Among them, the input and output terminals of the PLC can be adjusted and designed according to specific application requirements.

[0094] When the GDX1 packaging machine is preparing for production in the morning shift, the S7-200 PLC collects the compressed air opening time set on the touch screen through network communication (such as RS485 protocol), and the PLC output terminal Q0.0 will control the electric valve Y1 to be energized, connect the compressed air, and enter the production mode. When the equipment stops and runs out of power during the mid-shift, the PLC output point Q0.0 will control the electric valve Y1 to lose power according to the stop time set on the touch screen, turn off the compressed air, and enter the energy-saving mode. Before the morning shift production starts, the PLC controls the solenoid valve Y1 to open the compressed air in advance according to the set time, enter the production mode, and ensure production. During the energy-saving mode and production mode, manual opening and closing buttons are set on the touch screen, and the compressed air can be manually opened or closed through the touch screen to facilitate the debugging of the equipment.

[0095] Among them, the start and stop time of compressed air can be determined according to the original planned scheduling time, and can also be dynamically adjusted according to the production progress and equipment maintenance cycle. Specifically, the PLC can be integrated with the host computer system, such as MES, and sensors can be installed on the packaging production line to collect the number of completed cigarettes in real time. The sensor data can be transmitted to the MES system through the PLC to monitor the production progress.

[0096] The MES system calculates the deviation between the actual number of completed cigarettes and the planned number based on the number of cigarettes that have been completed, and determines the completion status of the production plan according to the existing production process, such as overdue, on schedule or ahead of schedule, and dynamically adjusts the order of the production plan according to the production progress deviation. For example, an intelligent scheduling algorithm (such as a priority algorithm or a genetic algorithm) is used to dynamically adjust the order of production tasks, and give higher priority to urgent production tasks, tasks with approaching or overdue delivery dates, and tasks with a large number of products to be produced. Tasks are sorted according to priority, and tasks with high priority are arranged for production first. For tasks with the same priority, they can be further sorted according to resource utilization or equipment status. According to the adjusted task sequence, the start and completion time of each task in the production plan is updated. For tasks completed ahead of schedule, the scheduling time is shortened and equipment resources are released in advance.

[0097] Typically, the new start time (compressed air start time) = original start time + daily average early completion time / 2, and the new completion time (compressed air stop time) = original completion time - daily average early completion time / 2. For delayed tasks, extend the scheduling time, or adjust the scheduling of subsequent tasks to ensure the achievement of the overall production target. Typically, the new start time (compressed air start time) = original start time - daily average delayed completion time / 2, and the new completion time (compressed air stop time) = original completion time + daily average delayed completion time / 2. Among them, the original start time, new start time, original completion time and new completion time are the start time and completion time of the task on the day, respectively. In addition, if there is an equipment maintenance plan scheduled in advance on the day, the impact of equipment maintenance on the start time and completion time must be considered on the basis of the above calculation results, that is, the new completion time (compressed air stop time) = original completion time + the expected maintenance time on the day / 2, and the new start time (compressed air start time) = original start time - the expected maintenance time on the day / 2. Among them, the proportional coefficient 2 can be dynamically adjusted according to the priority of the remaining production plans and the shift schedule to reduce the production interval caused by switching between production tasks and improve the resource utilization of equipment. The dynamically adjusted production plan and shift schedule will be published to the MES system based on the production progress, equipment maintenance plan and original production plan to ensure that each department and production unit can obtain the latest information in a timely manner and automatically start the corresponding packaging machine for packaging production according to the adjusted production plan and shift schedule.

[0098] In addition, a physical manual switch can be additionally provided. The physical manual switch is arranged on the body of the packaging machine host and connected to the input terminal of the PLC, and is used to respond to the user's manual control operation, generate a control instruction and send it to the PLC. The PLC controls the relay according to the received control instruction and then adjusts the state of the electric valve Y1 to realize the opening and / or closing of the compressed air. When the equipment is powered off, the relay will automatically cut off the electric valve Y1 due to power failure, and close the supply of compressed air without additional manual operation.

[0099] An automatic compressed air control system for a cigarette factory packaging machine proposed in an embodiment of the present invention can open and close compressed air at the right time, which helps to extend the life of the equipment, prevent pneumatic components from being affected by air pressure in a non-working state, avoid fatigue damage caused by continuous pressure, and reduce maintenance costs; the automated control process improves packaging efficiency, reduces manual operations, saves operators' time, makes the packaging process more efficient, and speeds up the speed at which the packaging machine enters or exits the working state; it automatically opens and closes the compressed air supply according to the packaging machine's workflow, ensures the synchronous operation of pneumatic components, improves the efficiency and quality of packaging processing, and cuts off the air source in time at the end of production, thereby achieving precise control of compressed air and avoiding unnecessary energy waste.

[0100] Embodiment 3

[0101] In some embodiments, the automatic control method of compressed air for packaging machines can be implemented as a computer program, that is:

[0102] When the automatic stop time is preset, if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state, a closing control instruction is sent to the electric regulating valve circuit switch;

[0103] When the automatic opening time is preset, if when the electric regulating valve is in a closed state, it is detected that the current system time matches the automatic opening time, an opening control instruction is sent to the electric regulating valve circuit switch.

[0104] It is tangibly contained in a computer-readable storage medium, such as a storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed on the packaging machine compressed air automatic control system via the ROM and / or the communication unit. When the computer program is loaded into the RAM and executed by the processor, one or more steps of the packaging machine compressed air automatic control method described above can be executed. Alternatively, in other embodiments, the processor can be configured to execute the packaging machine compressed air automatic control method by any other appropriate means (for example, by means of firmware).

[0105] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0106] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0107] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0108] In order to provide interaction with the user, the systems and techniques described herein can be implemented on a packaging machine compressed air automatic control system, which has: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball), through which the user can provide input to the packaging machine compressed air automatic control system. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and the input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0109] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0110] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0111] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0112] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compressed air automatic control system for a cigarette factory packaging machine, characterized in that: include: An electric regulating valve circuit switch, an electric regulating valve and a controller; the electric regulating valve is arranged at the compressed air source supply of the packaging machine main engine, the electric regulating valve circuit switch is electrically connected to the electric regulating valve, and the controller is electrically connected to the electric regulating valve circuit switch; The electric regulating valve is used to control the opening and closing of compressed air according to the opening and closing state of the electric regulating valve circuit switch; The controller is used for sending a closing control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic stopping time when the electric regulating valve is in an open state when the automatic stopping time is preset, and for sending an opening control instruction to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic opening time when the electric regulating valve is in a closed state when the automatic opening time is preset; The electric regulating valve circuit switch is used to trigger the electric regulating valve to control closing of compressed air in response to a closing control instruction sent by the controller, and to trigger the electric regulating valve to control opening of compressed air in response to an opening control instruction sent by the controller.

2. The system according to claim 1, characterized in that The electric regulating valve circuit switch is a control relay, and the power supply end of the control relay is electrically connected to the controller; the normally open contact of the control relay is electrically connected to the power supply end of the electric regulating valve; The controller is specifically configured to, when the automatic stop time is preset, send a low level signal to the electric regulating valve circuit switch if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in an open state, so as to trigger the control relay to disconnect and cause the electric regulating valve to lose power; and When the automatic opening time is preset, if the current system time is detected to match the automatic opening time when the electric regulating valve is in a closed state, a high-level signal is sent to the electric regulating valve circuit switch to trigger the control relay to energize the electric regulating valve after it is turned on.

3. The system according to claim 1, characterized in that The system further comprises: a touch screen, the touch screen being electrically connected to the controller; the touch screen being arranged on the body of the packaging machine host; The touch screen is used to set the automatic stop time and the automatic start time, and send the set automatic stop time and the automatic start time to the controller for storage.

4. The system according to claim 3, characterized in that The touch screen is further used to provide a manual switch control button for user display, and in response to the user's triggering selection of the manual switch control button, generate a first manual control instruction and send it to the controller; The controller is further configured to generate a closing control instruction or an opening control instruction matching the first manual control instruction according to the received first manual control instruction, and send the closing control instruction or the opening control instruction to the electric regulating valve circuit switch.

5. The system according to claim 1, characterized in that The system further comprises: a physical manual switch, the physical manual switch being electrically connected to the controller; the physical manual switch being arranged on the body of the packaging machine host; The physical manual switch is used to generate a second manual control instruction and send it to the controller in response to a manual control operation of the user; The controller is further configured to generate a closing control instruction or an opening control instruction matching the second manual control instruction according to the received second manual control instruction, and send the closing control instruction or the opening control instruction to the electric regulating valve circuit switch.

6. The system according to any one of claims 1 to 5, characterized in that: The controller is a programmable controller; Among them, the input pin of the programmable controller is used to connect to the touch screen or the physical manual switch, and the output pin of the programmable controller is used to connect to the electric regulating valve circuit switch.

7. A method for automatically controlling compressed air of a packaging machine, characterized in that: The method is performed by a controller configured in the automatic compressed air control system of the packaging machine according to any one of claims 1 to 6, and comprises: When the automatic stop time is preset, if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state, a closing control instruction is sent to the electric regulating valve circuit switch; When the automatic opening time is preset, if when the electric regulating valve is in a closed state, it is detected that the current system time matches the automatic opening time, an opening control instruction is sent to the electric regulating valve circuit switch.

8. The method according to claim 7, characterized in that When the automatic stop time is preset, if the current system time is detected to match the automatic stop time when the electric regulating valve is in the open state, a closing control instruction is sent to the electric regulating valve circuit switch, specifically including: When the automatic stop time is preset, if it is detected that the current system time matches the automatic stop time when the electric regulating valve is in the open state, a low level signal is sent to the electric regulating valve circuit switch to trigger the control relay to disconnect and cause the electric regulating valve to lose power; When the automatic opening time is preset, if the electric regulating valve is in a closed state and it is detected that the current system time matches the automatic opening time, an opening control instruction is sent to the electric regulating valve circuit switch, specifically including: When the automatic opening time is preset, if the current system time is detected to match the automatic opening time when the electric regulating valve is in a closed state, a high-level signal is sent to the electric regulating valve circuit switch to trigger the control relay to energize the electric regulating valve after closing.

9. The method according to claim 7, characterized in that: The method further comprises: When the automatic stop time and the automatic start time sent by the touch screen are received, the automatic stop time and the automatic start time are stored locally.

10. The method according to claim 7, characterized in that The method further comprises: When receiving a first manual control instruction generated by a user triggering and selecting a manual switch control button on the touch screen, generating a closing control instruction or an opening control instruction matching the first manual control instruction, and sending the closing control instruction or the opening control instruction to the electric regulating valve circuit switch; or, When receiving a second manual control instruction triggered by a user performing a manual control operation on a physical manual switch, a closing control instruction or an opening control instruction matching the second manual control instruction is generated, and the closing control instruction or the opening control instruction is sent to the electric regulating valve circuit switch.

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