A cigarette machine spider mobile phone structure negative pressure air supply automatic adjusting system and method

Abstract

The application relates to a cigarette machine spider hand mechanism negative pressure air supply automatic adjusting system and method. The system comprises an air path module and a control module. The air path module comprises a spider hand mechanism, an eddy current fan, a fan motor, a central dust removal system and a rotary butterfly valve. The air path module is used for controlling the start and stop of the eddy current fan based on the control module, so that constant pressure air supply of the spider hand mechanism is realized. The control module comprises a PLC controller, a first air pressure sensor and a second air pressure sensor. The control module is used for collecting the air pressures at the first air pressure sensor and the second air pressure sensor respectively, generating a control signal, and controlling the fan motor and the rotary butterfly valve based on the control signal. The disclosure increases the eddy current fan to provide auxiliary negative pressure air source for the spider hand mechanism, reduces energy consumption and noise, and improves the stability of the system.

Description

Technical Field

[0001] This disclosure relates to the field of cigarette machinery, and more specifically, to an automatic adjustment system and method for negative pressure suction supply of a cigarette machine spider arm mechanism. Background Technology

[0002] Currently, the cigarette conveying system of Protos series cigarette machines in the cigarette industry all adopts the spider-hand mechanism. This mechanism delivers cigarettes smoothly, without damaging their appearance or causing head collisions. The spider-hand mechanism mainly picks up double-length cigarettes from the cigarette conveying guide rail and conveys them to the inlet drum of the filling machine. A channel within the suction trough connects to the spider-hand negative pressure system to hold the cigarettes in place. Furthermore, the inner arc generatrix of the suction trough where it contacts the double-length cigarette remains horizontal, ensuring that the double-length cigarette moves parallel after being held and does not fall. The negative pressure required for the suction trough is provided by a vortex fan at 27.5 kPa. When the suction trough rotates to the area of ​​action of the suction block, negative pressure suction is generated, ensuring that the double-length cigarette does not fall during the time it is held in the suction trough and enters the inlet drum of the filling machine.

[0003] Because the negative pressure of the existing spider arm mechanism is entirely provided by the vortex fan of the central dust removal system, the inlet of the vortex fan is connected to the spider arm mechanism and the outlet is directly connected to the factory's central dust removal system. When working, the power is 1.1KW and the speed is 2800r / min. It has high energy consumption and loud noise. After working for a long time, the vortex fan impeller will accumulate dust seriously and the fan is prone to overload damage.

[0004] Therefore, one or more methods are needed to solve the above problems.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this disclosure is to provide an automatic adjustment system for negative pressure suction supply of a cigarette machine spider arm mechanism, thereby overcoming, at least to some extent, one or more problems caused by the limitations and defects of related technologies.

[0007] According to one aspect of this disclosure, an automatic adjustment system for negative pressure suction supply of a cigarette making machine's spider arm mechanism is provided, comprising an air path module and a control module, wherein:

[0008] The airflow module includes a spider arm mechanism, a vortex fan, a fan motor, a central dust removal system, and a rotary butterfly valve. The airflow module is used to control the start and stop of the vortex fan based on the control module, so as to achieve constant pressure air supply to the spider arm mechanism.

[0009] The control module includes a PLC controller, a first air pressure sensor, and a second air pressure sensor. The control module is used to collect the air pressure at the first air pressure sensor and the second air pressure sensor respectively, generate control signals, and control the fan motor and the rotating butterfly valve based on the control signals.

[0010] In one exemplary embodiment of this disclosure, the airflow module of the system includes:

[0011] The spider-hand mechanism is connected to the central dust removal system through an air duct. The spider-hand mechanism is used to pick up the preset object based on the negative pressure generated by the air flow in the air duct.

[0012] The outlet of the vortex blower is connected to the side of the connecting duct between the spider arm mechanism and the central dust removal system via a duct and a tee, and the vortex blower is used to provide supplemental air pressure to the spider arm mechanism.

[0013] The fan motor is connected to the vortex fan via a rigid rotating shaft, and the fan motor is used to provide power to the vortex fan;

[0014] One end of the rotary butterfly valve is connected to the air inlet of the vortex blower through a duct, and the other end of the rotary butterfly valve is connected to the second air pressure sensor through a duct. The rotary butterfly valve is used to control the air pressure of the air flowing into the air inlet of the vortex blower by controlling the rudder surface of the rotary butterfly valve.

[0015] In one exemplary embodiment of this disclosure, the control module of the system includes:

[0016] The PLC controller is connected to the fan motor, the rotary butterfly valve, the first air pressure sensor, and the second air pressure sensor respectively via control signal lines. The PLC controller is used to control the start and stop of the fan motor and the control surface angle of the rotary butterfly valve based on the air pressure of the first air pressure sensor and the second air pressure sensor.

[0017] The second air pressure sensor is connected to the side of the connecting air duct between the spider arm mechanism and the central dust removal system near the spider arm mechanism via an air duct and a tee. The second air pressure sensor is used to detect the air pressure in the air duct at the location of the second air pressure sensor.

[0018] The first air pressure sensor is fixedly installed on the side of the connecting duct between the spider arm mechanism and the central dust removal system, near the spider arm mechanism. The first air pressure sensor is used to detect the air pressure in the duct at the location of the first air pressure sensor.

[0019] In one exemplary embodiment of this disclosure, the central dust removal system is based on the negative pressure generated by the airflow caused by the central fan, and is also used to complete the dust removal operation of the cigarette equipment environment.

[0020] In one exemplary embodiment of this disclosure, the system further includes:

[0021] The first barometer is connected to the first barometer via a duct and is used to display and monitor the air pressure at the outlet of the first barometer.

[0022] The second barometer is connected to the second barometer via a duct. The second barometer is used to display and monitor the air pressure at the outlet of the second barometer.

[0023] In one aspect of this disclosure, an automatic adjustment method for negative pressure suction supply of a cigarette machine spider arm mechanism is provided, the method comprising:

[0024] The first air pressure value is generated by collecting the air pressure at the air inlet of the spider arm mechanism based on the first air pressure sensor;

[0025] The first air pressure value is compared with the preset air pressure value. If the first air pressure value is less than the preset air pressure value, a first control signal is generated based on the PLC controller.

[0026] The fan motor is enabled based on the first control signal, and the opening of the rotating butterfly valve is adjusted.

[0027] The second air pressure value is generated by collecting the air pressure at the air inlet of the rotating butterfly valve based on the second air pressure sensor.

[0028] If the sum of the first air pressure value and the second air pressure value is greater than or equal to the preset air pressure value, a second control signal is generated based on the PLC controller.

[0029] The adjustment of the opening degree of the rotary butterfly valve is stopped based on the second control signal.

[0030] In one exemplary embodiment of this disclosure, the method further includes:

[0031] When the first air pressure value is greater than the preset air pressure value, a third control signal is generated based on the PLC controller;

[0032] Based on the third control signal, the fan motor is stopped, and the opening of the rotating butterfly valve is adjusted to the initial position.

[0033] An exemplary embodiment of this disclosure discloses an automatic adjustment system and method for negative pressure suction air supply of a cigarette machine's spider-hand mechanism. The system includes an airflow module and a control module. The airflow module includes a spider-hand mechanism, a vortex fan, a fan motor, a central dust removal system, and a rotating butterfly valve. The airflow module is used to control the start and stop of the vortex fan based on the control module, thereby achieving constant pressure air supply to the spider-hand mechanism. The control module includes a PLC controller, a first air pressure sensor, and a second air pressure sensor. The control module is used to collect the air pressure at the first and second air pressure sensors respectively, generate control signals, and control the fan motor and the rotating butterfly valve based on the control signals. This disclosure reduces energy consumption and noise and improves system stability by adding a vortex fan to provide an auxiliary negative pressure air source for the spider-hand mechanism.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0035] The above and other features and advantages of this disclosure will become more apparent from the detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0036] Figure 1 A schematic diagram of a negative pressure suction supply automatic adjustment system for a cigarette machine spider arm mechanism according to an exemplary embodiment of the present invention is shown.

[0037] Figure 2 A schematic diagram of the structure of an automatic adjustment system for negative pressure suction supply of a cigarette machine spider arm mechanism according to an exemplary embodiment of the present invention is shown.

[0038] Figure 3 A schematic diagram of another module of the automatic adjustment system for negative pressure suction supply of the spider arm mechanism of a cigarette machine according to an exemplary embodiment of the present invention is shown;

[0039] Figure 4 A logic diagram of an automatic adjustment method for negative pressure suction supply of a cigarette machine spider arm mechanism according to an exemplary embodiment of the present disclosure is shown. Detailed Implementation

[0040] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0041] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details described, or other methods, components, materials, apparatuses, steps, etc., can be employed. In other instances, well-known structures, methods, apparatuses, implementations, materials, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0042] The block diagrams shown in the attached figures are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, or in one or more software-hardened modules, or in different network and / or processor devices and / or micro PLC controller devices.

[0043] In this example embodiment, an automatic adjustment system for negative pressure suction supply of a cigarette machine spider arm mechanism is first provided; see reference. Figure 1 As shown, the automatic adjustment system for negative pressure suction supply of the spider arm mechanism of a cigarette machine includes an air path module and a control module, wherein:

[0044] The airflow module includes a spider arm mechanism 1, a vortex fan 2, a fan motor 3, a central dust removal system 4, and a rotary butterfly valve 8. The airflow module is used to control the start and stop of the vortex fan 2 based on the control module, so as to achieve constant pressure air supply to the spider arm mechanism 1.

[0045] The control module includes a PLC controller 5, a first air pressure sensor 6, and a second air pressure sensor 9. The control module is used to collect the air pressure at the first air pressure sensor 6 and the second air pressure sensor 9 respectively, generate control signals, and control the fan motor 3 and the rotating butterfly valve 8 based on the control signals.

[0046] An exemplary embodiment of this disclosure discloses an automatic adjustment system and method for negative pressure suction air supply of a cigarette machine's spider-hand mechanism. The system includes an airflow module and a control module. The airflow module includes a spider-hand mechanism, a vortex fan, a fan motor, a central dust removal system, and a rotating butterfly valve. The airflow module is used to control the start and stop of the vortex fan based on the control module, thereby achieving constant pressure air supply to the spider-hand mechanism. The control module includes a PLC controller, a first air pressure sensor, and a second air pressure sensor. The control module is used to collect the air pressure at the first and second air pressure sensors respectively, generate control signals, and control the fan motor and the rotating butterfly valve based on the control signals. This disclosure reduces energy consumption and noise and improves system stability by adding a vortex fan to provide an auxiliary negative pressure air source for the spider-hand mechanism.

[0047] The following will further describe an automatic adjustment system for negative pressure suction supply of a cigarette machine spider arm mechanism in this example embodiment.

[0048] Example 1:

[0049] like Figure 2 As shown, the automatic adjustment system for negative pressure suction supply of the cigarette machine's spider arm mechanism includes an air path module and a control module, wherein:

[0050] The airflow module includes a spider arm mechanism 1, a vortex fan 2, a fan motor 3, a central dust removal system 4, and a rotary butterfly valve 8. The airflow module is used to control the start and stop of the vortex fan 2 based on the control module, so as to achieve constant pressure air supply to the spider arm mechanism 1.

[0051] The control module includes a PLC controller 5, a first air pressure sensor 6, and a second air pressure sensor 9. The control module is used to collect the air pressure at the first air pressure sensor 6 and the second air pressure sensor 9 respectively, generate control signals, and control the fan motor 3 and the rotating butterfly valve 8 based on the control signals.

[0052] In this example embodiment, the airflow module of the system includes:

[0053] The spider-hand mechanism 1 is connected to the central dust removal system 4 through the air duct. The spider-hand mechanism 1 is used to pick up the preset object based on the negative pressure generated by the air flow in the air duct.

[0054] The outlet of the vortex blower 2 is connected to the side of the connecting duct between the spider arm mechanism 1 and the central dust removal system 4 via a duct and a tee. The vortex blower 2 is used to provide supplemental air pressure to the spider arm mechanism 1.

[0055] The fan motor 3 is connected to the vortex fan 2 via a rigid rotating shaft, and the fan motor 3 is used to provide power to the vortex fan;

[0056] One end of the rotary butterfly valve 8 is connected to the air inlet of the vortex blower 2 through a duct, and the other end of the rotary butterfly valve 8 is connected to the second air pressure sensor 9 through a duct. The rotary butterfly valve 8 is used to control the air pressure of the air flowing into the air inlet of the vortex blower 2 by controlling the rudder surface of the rotary butterfly valve 8.

[0057] In this example embodiment, the control module of the system includes:

[0058] The PLC controller 5 is connected to the fan motor 3, the rotary butterfly valve 8, the first air pressure sensor 6, and the second air pressure sensor 9 via control signal lines. The PLC controller 5 is used to control the start and stop of the fan motor 3 and the control surface angle of the rotary butterfly valve 8 based on the air pressure of the first air pressure sensor 6 and the second air pressure sensor 9.

[0059] The second air pressure sensor 9 is connected to the side of the connecting air duct between the spider hand mechanism 1 and the central dust removal system 4 near the spider hand mechanism 1 via an air duct and a tee. The second air pressure sensor 9 is used to detect the air pressure in the air duct at the location of the second air pressure sensor 9.

[0060] The first air pressure sensor 6 is fixedly installed on the side of the connecting duct between the spider arm mechanism 1 and the central dust removal system 4, near the spider arm mechanism 1. The first air pressure sensor 6 is used to detect the air pressure in the duct at the location of the first air pressure sensor 6.

[0061] In this example embodiment, the central dust removal system 4 is based on the negative pressure generated by the airflow caused by the central fan, and is also used to complete the dust removal operation of the cigarette equipment environment.

[0062] In the embodiments of this example, as Figure 3 As shown, the system also includes:

[0063] The first barometer 7 is connected to the first barometer 6 via a duct. The first barometer 7 is used to display and monitor the air pressure at the outlet of the first barometer 6.

[0064] The second pressure gauge 10 is connected to the second pressure sensor 9 via an air duct. The second pressure gauge 10 is used to display and monitor the air pressure at the outlet of the second pressure sensor 9.

[0065] Example 2:

[0066] In this example embodiment, the spider-hand mechanism 1 primarily lifts and transports double-length cigarettes from the smoke conveying guide rail to the smoke inlet drum of the receiving machine. The required negative pressure suction is directly provided by the central dust removal system 4. A first pressure sensor 6 is installed on the suction channel of the spider-hand mechanism 1 to monitor the negative pressure suction provided by the central dust removal system 4 to the spider-hand mechanism 1. The pressure value is displayed on the first pressure gauge 7. The vortex fan 2 serves as a backup fan, with its inlet directly connected to the spider-hand mechanism 1 and the... The pipes of the central dust removal system 4 are connected to form a three-way pipe, with the outlet directly connected to the central dust removal system 4. The vortex fan 2 is normally in standby mode and is used to compensate for the negative pressure suction required by the spider arm mechanism 1. A second pressure sensor 9 is installed on the suction channel of the vortex fan 2 to monitor the magnitude of the negative pressure suction provided by the vortex fan 2 to the spider arm mechanism 1. The pressure value is displayed on the second pressure gauge 10, and the pressure value signal is input to the PLC controller 5. The fan motor 3 is the motor of the vortex fan 4. The start / stop motor of the vortex blower 2 is normally in standby mode, and only enters working mode when it receives a signal from the PLC controller 5. The central dust removal system 4 has two main functions: first, to provide negative pressure suction directly to the spider arm mechanism 1; and second, to remove dust from the spider arm mechanism 1 and the vortex blower 2. The PLC controller 5 is used to receive and process the pressure signal values ​​input from the first pressure sensor 6 and the second pressure sensor 9, and then control the start / stop operation of the blower motor 3 and the rotation of the rotating butterfly valve 8. The rotating angle is adjusted to control the magnitude of the air pressure compensated by the vortex fan 2; the rotating butterfly valve 8 is installed at the inlet of the vortex fan 2 to adjust the magnitude of the air pressure compensated by the vortex fan 2 for the spider arm mechanism 1; the second air pressure sensor 9 is installed on the suction channel of the vortex fan 2 to monitor the magnitude of the negative pressure suction pressure provided by the vortex fan 2 to the spider arm mechanism 1, and the pressure value signal is input to the PLC controller 5; the pressure value of the second air pressure gauge 10 displays the magnitude of the negative pressure suction pressure monitored by the second air pressure sensor 9. The above 10 parts constitute the device of the present invention.

[0067] It should be noted that although several modules or units of an automatic adjustment system for negative pressure suction supply of a cigarette machine spider-hand mechanism have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0068] Furthermore, in this example embodiment, a method for automatically adjusting the negative pressure suction supply of a cigarette machine's spider-hand mechanism is also provided. This method for automatically adjusting the negative pressure suction supply of a cigarette machine's spider-hand mechanism may include:

[0069] The first air pressure value is generated by collecting the air pressure at the air inlet of the spider hand mechanism 1 based on the first air pressure sensor 6.

[0070] The first air pressure value is compared with the preset air pressure value. If the first air pressure value is less than the preset air pressure value, a first control signal is generated based on the PLC controller 5.

[0071] Based on the first control signal, the fan motor 3 is enabled, and the opening of the rotating butterfly valve 8 is adjusted;

[0072] The second air pressure value is generated by collecting the air pressure at the air inlet of the rotary butterfly valve 8 based on the second air pressure sensor 9.

[0073] If the sum of the first air pressure value and the second air pressure value is greater than or equal to the preset air pressure value, a second control signal is generated based on the PLC controller 5.

[0074] The adjustment of the opening degree of the rotary butterfly valve 8 is stopped based on the second control signal.

[0075] In this example embodiment, when the first air pressure value is greater than the preset air pressure value, a third control signal is generated based on the PLC controller 5;

[0076] Based on the third control signal, the fan motor 3 is stopped, and the opening of the rotating butterfly valve 8 is adjusted to the initial position.

[0077] In the embodiments of this example, as Figure 4As shown, a first pressure sensor 6 is installed on the suction channel of the spider-hand mechanism 1 to monitor the negative pressure suction provided by the central dust removal system 4 to the spider-hand mechanism 1. The pressure value is displayed on the first pressure gauge 7, and the value is P≥27.5KPa. The pressure value signal is input to the PLC controller 5. When the pressure value is lower than 27.5KPa, the pressure value displayed on the first pressure gauge 7 is A. The PLC controller 5 controls the fan motor 3 to start the vortex fan 2 to compensate for the negative pressure suction required by the spider-hand mechanism 1. A second pressure sensor 9 is installed on the suction channel of the vortex fan 2 to monitor... The negative pressure suction provided by the vortex blower 2 to the spider-hand mechanism 1 is displayed on the second pressure gauge 10, and the pressure signal is input to the PLC controller 5. After receiving the pressure signal from the second pressure sensor 9, the PLC controller 5 controls the angle of the rotating butterfly valve 8 installed on the suction channel of the vortex blower 2, thereby controlling the amount of negative pressure suction provided by the vortex blower 2 and displaying the value as B on the second pressure gauge 10. When A+B=P≥27.5KPa, the angle of the rotating butterfly valve 8 remains fixed, ensuring sufficient and stable negative pressure suction for the spider-hand mechanism 1. If the pressure value of the first pressure gauge 7 is greater than 27.5KPa, the PLC controller 5 controls the blower motor 3 to shut down the vortex blower 2, putting it into standby mode as a backup.

[0078] In this example embodiment, the rotary butterfly valve 8 is initially fully closed. When the pressure gauge 7 is less than 27.5, the PLC controller starts the vortex blower 2 and simultaneously opens the rotary butterfly valve 8, ensuring that its angle remains constant when the pressure B = 27.5 - A. When the blower stops, the rotary butterfly valve 8 needs to be kept fully closed.

[0079] It should be noted that although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.

[0080] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0081] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0082] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A cigarette machine spider mobile negative pressure suction supply automatic adjustment system, characterized in that, The system comprises a wind path module and a control module, wherein: The wind path module comprises a spider hand mechanism, a vortex fan, a fan motor, a central dust removal system, and a rotating butterfly valve, and is configured to control the start and stop of the vortex fan based on the control module to achieve constant pressure air supply to the spider hand mechanism; The control module comprises a PLC controller, a first air pressure sensor, and a second air pressure sensor, and is configured to collect air pressure at the first air pressure sensor and the second air pressure sensor, generate a control signal, and control the fan motor and the rotating butterfly valve based on the control signal; In the wind path module of the system: The spider hand mechanism is connected to the central dust removal system through an air duct, and is configured to suck the preset object based on the negative pressure generated by the air flow in the air duct; The air outlet of the vortex fan is connected to the air duct between the spider hand mechanism and the central dust removal system through a tee joint, and is configured to provide supplementary air pressure to the spider hand mechanism; The fan motor is connected to the vortex fan through a rigid shaft, and is configured to provide power to the vortex fan; One end of the rotating butterfly valve is connected to the air inlet of the vortex fan through an air duct, and the other end of the rotating butterfly valve is connected to the second air pressure sensor through an air duct, and the rotating butterfly valve is configured to control the air pressure of the air flowing into the air inlet of the vortex fan by controlling the rudder surface of the rotating butterfly valve; In the control module of the system: The PLC controller is connected to the fan motor, the rotating butterfly valve, the first air pressure sensor, and the second air pressure sensor through a control signal line, and is configured to control the start and stop of the fan motor and the rudder angle of the rotating butterfly valve based on the air pressure of the first air pressure sensor and the second air pressure sensor; The second air pressure sensor is connected to the air duct between the spider hand mechanism and the central dust removal system through a tee joint, and is configured to detect the air pressure of the air duct at the second air pressure sensor; The first air pressure sensor is fixedly installed on the air duct between the spider hand mechanism and the central dust removal system, and is configured to detect the air pressure of the air duct at the first air pressure sensor; The first air pressure sensor collects the air pressure at the air inlet of the spider hand mechanism to generate a first air pressure value; The first air pressure value is compared with a preset air pressure value, and if the first air pressure value is less than the preset air pressure value, a first control signal is generated based on the PLC controller; The fan motor is enabled based on the first control signal, and the opening of the rotating butterfly valve is adjusted; The second air pressure sensor collects the air pressure at the air inlet of the rotating butterfly valve to generate a second air pressure value; If the sum of the first air pressure value and the second air pressure value is greater than or equal to the preset air pressure value, a second control signal is generated based on the PLC controller; The adjustment of the opening of the rotating butterfly valve is stopped based on the second control signal.

2. The system of claim 1, wherein, The system, the central dust removal system is based on the negative pressure generated by the air flow of the central fan, and is also used for completing the dust removal work of the cigarette equipment environment.

3. The system of claim 1, wherein, The system further comprises: A first air pressure gauge connected with the first air pressure sensor through an air pipe, used for displaying and monitoring the air pressure of the air outlet of the first air pressure sensor; A second air pressure gauge connected with the second air pressure sensor through an air pipe, used for displaying and monitoring the air pressure of the air outlet of the second air pressure sensor.

4. A method for automatically adjusting the negative pressure air supply of a cigarette machine spider hand mechanism, using the system according to any one of claims 1 to 3, characterized in that, The method comprises: Collecting the air pressure of the air inlet of the spider mobile phone structure based on the first air pressure sensor, and generating a first air pressure value; Comparing the first air pressure value with a preset air pressure value, if the first air pressure value is less than the preset air pressure value, generating a first control signal based on the PLC controller; Enabling the fan motor and adjusting the opening of the rotating butterfly valve based on the first control signal; Collecting the air pressure of the air inlet of the rotating butterfly valve based on the second air pressure sensor, and generating a second air pressure value; If the sum of the first air pressure value and the second air pressure value is greater than or equal to the preset air pressure value, generating a second control signal based on the PLC controller; Stopping the adjustment of the opening of the rotating butterfly valve based on the second control signal.

5. The method of claim 4, wherein, The method further comprises: When the first air pressure value is greater than the preset air pressure value, generating a third control signal based on the PLC controller; Based on the third control signal, stop the fan motor, and adjust the opening of the rotating butterfly valve to the initial position.

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