Control system and control method of special fluid suction nozzle doypack packaging machine

Abstract

The invention discloses a control system and a control method for a special fluid suction nozzle doypack packaging machine, and the control system comprises a bag feeding control subsystem which works at mutually independent stations, the gas injection control subsystem, the liquid injection control subsystem, the sealing control subsystem, the temperature control subsystem and the cleaning control subsystem are used for supplying bags, injecting gas into the bags, filling liquid medicine, sealing bag openings, controlling the temperature of the liquid medicine to be filled and cleaning and discharging residual liquid medicine in the packaging machine. The mutually independent stations do not interfere with each other, a monitoring function is added to each station, shutdown maintenance can be carried out when any procedure breaks down, working faults of equipment at other stations cannot be caused, the requirement for filling inert oxygen gas and liquid medicine in sequence can be met, automatic cleaning and liquid discharging can be carried out after filling is completed, networking or single-machine operation can be compatible, and the working efficiency is improved. And manpower can be saved during networking operation. And the prefabricated self-standing bag is used, so that the packaging grade of the packaging material is improved, and the packaging material is more convenient and sanitary.

Description

Technical Field

[0001] The present invention belongs to the field of fluid packaging machines, and more specifically, relates to a control system and a control method for a fluid-specialized nozzle self-standing bag packaging machine. Background Art

[0002] The Chinese medicine liquid after decocting needs to be packaged for transportation and storage before being delivered to patients. An efficient and intelligent packaging solution can improve the productivity and quality of packaging, and reduce labor and time costs.

[0003] Common packaging equipment uses a packaging head to load a roll of film. The head has the functions of longitudinal sealing, transverse sealing, and cutting, and forms a packaging bag from the roll of film. Liquid is injected during the packaging process, and the liquid medicine is also encapsulated therein after packaging. Since packaging and liquid injection are completed by the same head, the cooperation requirements between processes are relatively high, and at the same time, the integration degree is high, making it difficult to add an induction detection function for troubleshooting. When a problem occurs in the packaging part, the liquid injection device will inject liquid as usual, resulting in a large amount of liquid medicine being spilled. In addition, the aesthetics of this kind of packaging bag is not enough, and it is cumbersome to open the package, requiring tools such as scissors, and it is extremely easy to leak liquid when cutting the bag, causing pollution and waste. For the preservation or taste requirements of the liquid medicine after filling, different substances may need to be injected, so filling equipment with multiple workstations is required to meet the requirements. And when preparing a large batch of liquid medicine centrally, multiple packaging devices need to work simultaneously. If only single-machine control and operation are possible, it will be time-consuming and laborious.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a control system and a control method for a fluid-specialized nozzle self-standing bag packaging machine. Each control subsystem can work at mutually independent workstations according to the process. When a device at each workstation fails, it can automatically and timely stop without causing the failure of devices at other workstations, can automatically clean and drain liquid, and can meet the needs of filling inert gas and liquid medicine successively, and the bag feeding is accurate and simple. The finished product is convenient and hygienic to use and can be compatible with networking or single-machine operation.

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A control system for a fluid-specialized nozzle self-standing bag packaging machine includes a bag loading control subsystem, an air injection control subsystem, a liquid injection control subsystem, a sealing control subsystem, a temperature control subsystem, and a cleaning control subsystem that work at mutually independent workstations, respectively for supplying bags, injecting gas into the bags, filling liquid medicine, sealing the bag mouth, controlling the temperature of the liquid medicine to be filled, and cleaning and discharging the residual liquid medicine in the packaging machine.

[0008] Furthermore, the control system of the fluid-specialized nozzle self-standing bag packaging machine further includes a display control subsystem, through which human-machine interaction is carried out to set the heating temperature of the liquid medicine in the liquid medicine storage container, the stirring rate of the stirring device, the packaging quantity, the number of bags, and the fine-tuning amount, and display various parameters of the packaging process and the real-time status of each sensor.

[0009] Furthermore, the control system of the fluid-specialized nozzle self-standing bag packaging machine further includes a network communication subsystem, which communicates with the external decocting control center. The software of the decocting control center realizes remote control of a single packaging machine or multiple packaging machines; the packaging machine is compatible with networked control and single-machine use; it also includes a safety control subsystem, which realizes pausing the work of relevant subsystems under abnormal working conditions and gives an alarm.

[0010] Furthermore, the bag loading control subsystem includes a bag feeding assembly. The bag feeding assembly includes a bag storage rack, a lifting and bag pushing device, a first upper limit sensor, and a first lower limit sensor. The bag storage rack includes a vertical part and a bent part connected to its lower end. A bag feeding notch penetrating up and down is provided on the bag storage rack. The lifting and bag pushing device can move up and down and push down the self-standing bag located in the bag feeding notch of the bag storage rack; when the lifting and bag pushing device moves upward and triggers the first upper limit sensor, it stops moving upward. When the lifting and bag pushing device moves downward and triggers the first lower limit sensor, it stops moving downward; the lifting and bag pushing device includes a first lifting device and a fork. The middle of the fork is rotatably installed on the first lifting device through a pin shaft. One end of the fork points to the bag feeding notch of the bag storage rack and can contact the self-standing bag in the bag feeding notch. A limit block is provided below the other end of the fork, and the limit block is fixed on the first lifting device. Taking the pin shaft as the boundary, the weight of the side of the fork pointing to the bag feeding notch of the bag storage rack is less than the weight of the opposite side.

[0011] Furthermore, the air injection control subsystem includes an air outlet terminal, a second lifting device, and an electromagnetic valve. The electromagnetic valve controls the switch of the air supply device connected to the air outlet terminal, and the second lifting device drives the air outlet terminal to lift; the air injection control subsystem further includes a second upper limit sensor and a second lower limit sensor, which are used to limit the up and down running stop positions of the air outlet terminal.

[0012] Furthermore, the cleaning control subsystem includes a liquid discharge assembly. The liquid discharge assembly includes a movable linear module and a pipeline. The linear module drives the pipeline to move. When discharging liquid, it moves to the position below the injection control subsystem to collect waste liquid. When not discharging liquid, it moves to a position that does not interfere with the power transmission assembly for transporting self-standing bags.

[0013] The present invention also proposes a control method for the fluid-specialized nozzle self-standing bag packaging machine. Using the above control system, step S2 is executed: bag loading, injecting air into the bag, filling the liquid medicine, sealing the bag mouth, and dropping the bag are respectively carried out at the workstations where the bag loading control subsystem, the air injection control subsystem, the liquid injection control subsystem, the sealing control subsystem are located and at independent workstations above the bag dropping workstation.

[0014] Further, there is step S1 before step S2 and step S3 after step S2.

[0015] S1. Set the packaging parameters through local operation or networked remote operation, and the packaging machine works according to the relevant parameters.

[0016] S3. After the liquid medicine filling is completed, the cleaning control subsystem cleans the residual liquid medicine in the packaging machine and discharges it.

[0017] Further, before step S2, it also includes step S11: The equipment at each station conducts self-inspection. After the self-inspection is successful, step S2 is executed; if a fault is found during the self-inspection, a fault is prompted; after the fault is repaired, the above self-inspection steps in step S11 are repeated.

[0018] Further, in step S2, when the bag loading control subsystem, gas injection control subsystem, liquid injection control subsystem, and sealing control subsystem perform relevant actions, they respectively conduct self-inspection on whether the bag loading, gas injection, filling, and sealing are in place: If so, proceed to the next step until all filling is completed and then execute step S3; if not, prompt for fault troubleshooting, and after the fault is eliminated, repeat the above self-inspection steps in step S2 again.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0020] A control system and control method for a fluid-specialized suction nozzle stand-up pouch packaging machine of the present invention. Among them, the control system of the fluid-specialized suction nozzle stand-up pouch packaging machine includes a bag loading control subsystem, a gas injection control subsystem, a liquid injection control subsystem, a sealing control subsystem, a temperature control subsystem, and a cleaning control subsystem that work at mutually independent stations, respectively supplying bags, injecting gas into the bags, filling liquid medicine, sealing the bag mouths, controlling the temperature of the liquid medicine to be filled, and cleaning and discharging the residual liquid medicine in the packaging machine. The centralized liquid injection and bag-making packaging process is split into several mutually independent stations such as bag loading, injecting inert oxygen gas, filling, sealing, and discharging the bag, and there is no interference between each station. A monitoring function is added to each station, and any process failure can be stopped for maintenance. When a fault occurs in the equipment at each station, it can automatically stop in time without causing the equipment at other stations to malfunction, avoiding accidents such as continuous spilling of liquid medicine and inability to discharge the air in the packaging bag. It can meet the need of filling inert oxygen gas and liquid medicine successively, can automatically clean and drain the liquid after filling, and is compatible with networked or single-machine operation. When operating in a networked manner, it can save manpower. Using prefabricated stand-up pouches, the bag-making step is cancelled, eliminating accidents and faults in the bag-making process. After the stand-up pouch is filled, it can stand on the table, and the packaging can be opened by unscrewing the cap when drinking, improving the packaging grade of the packaged product, and being more convenient and hygienic.

[0021] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Brief Description of the Drawings

[0022] The drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0023] Figure 1 is an overall schematic diagram of a fluid-specialized nozzle self-standing bag packaging machine of the present invention;

[0024] Figure 2 is Figure 1 a left view of;

[0025] Figure 3 is Figure 1 a top view of;

[0026] Figure 4 is a partial structural schematic diagram of a control system of a fluid-specialized nozzle self-standing bag packaging machine of the present invention;

[0027] Figure 5 is Figure 4 a left view of;

[0028] Figure 6 is Figure 4 a top view of;

[0029] Figure 7 is a structural schematic diagram of a liquid injection control subsystem of a control system of a fluid-specialized nozzle self-standing bag packaging machine of the present invention;

[0030] Figure 8 is Figure 7 a partial sectional view of;

[0031] Figure 9 is a structural schematic diagram of a bag feeding assembly of a control system of a fluid-specialized nozzle self-standing bag packaging machine of the present invention;

[0032] Figure 10 is a structural schematic diagram of a fork;

[0033] Figure 11 is a structural schematic diagram of a lower cover assembly of a control system of a fluid-specialized nozzle self-standing bag packaging machine of the present invention;

[0034] Figure 12 is Figure 11 a partial enlarged view of;

[0035] Figure 13 is a control flow chart.

[0036] In the figure: 1, pot body; 2, operation screen; 3, power-on button; 7, carriage; 8, bag feeding assembly; 10, gas injection control subsystem; 11, liquid injection control subsystem; 12, stand-up bag; 13, liquid discharge assembly; 14, lower cover assembly; 15, cap screwing assembly; 16, intermittent rotation mechanism; 17, driving wheel; 18, bag clip; 19, chain; 20, driven wheel; 21, frame; 22, adapter frame; 23, limit frame; 24, second adapter frame; 25, third lifting device; 26, guide rail rod; 27, compression spring; 28, retaining ring; 29, plug rod; 30, liquid injection nozzle; 31, liquid injection box; 32, bag feeding notch; 33, first lifting device; 34, pin shaft rod; 35, fork; 36, limit block; 37, blanking guide rail; 38, discharger; 39, limit shaft; 40, torsion spring; 41, fixed shaft; 42, pressing plate; 43, spring piece; 44, bag storage rack.

[0037] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions 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. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] A control system for a self-standing bag packaging machine for a special fluid nozzle of the present invention includes a bag loading control subsystem, an air injection control subsystem, a liquid injection control subsystem, a sealing control subsystem, a temperature control subsystem, and a cleaning control subsystem, which are respectively used to supply self-standing bags to relevant subsystems, inject gas into the bags, fill the liquid medicine, seal the bag mouth, control the temperature of the liquid medicine to be filled, and clean and discharge the residual liquid medicine in the packaging machine. It also includes a central control unit, and the bag loading control subsystem, the air injection control subsystem, the liquid injection control subsystem, the sealing control subsystem, the temperature control subsystem, and the cleaning control subsystem are all controlled by the central control unit to work. Each of the sensors described below also sends signals to the central control unit.

[0042] The temperature control subsystem realizes the control of the temperature of the liquid medicine during the packaging process to ensure that the liquid medicine is packaged within the set temperature range.

[0043] The control system for the self-standing bag packaging machine for a special fluid nozzle also includes a display control subsystem, through which the heating temperature of the liquid medicine in the liquid medicine storage container, the stirring rate of the stirring device, the packaging quantity, the number of bags, and the fine adjustment quantity are set through human-computer interaction, and each parameter of the packaging process and the real-time status of each sensor are displayed.

[0044] The control system for the self-standing bag packaging machine for a special fluid nozzle also includes a network communication subsystem, which communicates with an external decoction control center. Then, the software of the decoction control center can realize remote control of a single self-standing bag packaging machine for a special fluid nozzle, and can also realize remote control of multiple self-standing bag packaging machines for a special fluid nozzle. Each self-standing bag packaging machine for a special fluid nozzle can be used in a compatible networked manner or in a stand-alone manner.

[0045] The control system for the self-standing bag packaging machine for a special fluid nozzle also includes a safety control subsystem, which monitors the above-mentioned relevant subsystems and realizes suspending the work of the above-mentioned relevant subsystems in abnormal working conditions and giving an alarm.

[0046] The bag loading control subsystem includes a power transmission component and a bag feeding component. The power transmission component receives the self-standing bags sent out one by one from the bag feeding component and transports them one by one to the workstations where the air injection control subsystem, the liquid injection control subsystem, and the sealing control subsystem are located for injecting gas, filling the liquid medicine, and buckling and tightening the screw cap to seal the bag mouth.

[0047] Combined Figure 4 、 5, as shown in FIGS. 6, the power transmission assembly includes an intermittent rotation mechanism 16, a driving wheel 17, a driven wheel 20 and a chain. The intermittent rotation mechanism 16 of the power transmission assembly drives the driving wheel 17 to rotate, thereby driving the movement of the chain mounted on the driving wheel 17 and the driven wheel 20. A number of bag clips 18 are arranged at intervals on the chain to respectively receive the single stand-up bags 12 coming out of the bag feeding assembly 8. The chain movement sequentially transports the stand-up bags 12 to the workstations where the air injection control subsystem, the liquid injection control subsystem 11, the lower cover assembly 14 and the capping assembly 15 of the sealing control subsystem are located for related operations. In order to prevent the stand-up bags 12 from shaking at each workstation, causing failures in air injection, liquid medicine perfusion, capping and screwing, guide rails can be arranged below the chain at each workstation to limit the stand-up bags 12.

[0048] Combined Figure 1-5 , as shown in FIGS. 9 and 10, the bag feeding assembly 8 includes a bag storage rack 44, a lifting and pushing bag device, a first upper limit sensor and a first lower limit sensor. The lifting and pushing bag device stops ascending after triggering the first upper limit sensor when running upward, and stops descending after triggering the first lower limit sensor when running downward. The bag storage rack 44 includes a vertical part and a bent part connected to the lower end thereof. The bent part and the vertical part are transitioned into an arc shape and the end of the bent part is horizontal or nearly horizontal. A bag feeding notch 32 penetrating up and down is provided on the bag storage rack 44. The stand-up bags 12 enter the bag feeding notch 32 from the upper inlet of the bag feeding notch 32. The stand-up bags 12 are stacked in layers in the bag feeding notch 32. The lifting and pushing bag device can move up and down and push the stand-up bags 12 located in the bag feeding notch 32 downward, so that the stand-up bags 12 move downward along the bag feeding notch 32 and are sent out from the lower outlet of the bag feeding notch 32 one by one and fall into the bag clips 18 on the chain of the power transmission assembly. The stand-up bags 12 can be manually loaded into the bag feeding notch 32 until the bag feeding notch 32 is full.

[0049] The lifting and pushing bag device of the bag feeding assembly 8 includes a first lifting device 33 and a fork. The middle part of the fork is rotatably mounted on the first lifting device 33 through a pin shaft. The first lifting device 33 is mounted on the frame 21 of the fluid special suction nozzle stand-up bag packaging machine.

[0050] In this embodiment, in order to facilitate the installation of equipment components, the first lifting device 33 is made to be far away from the bag feeding notch 32, and a pin shaft rod 34 pointing to the bag feeding notch 32 is installed on the first lifting device 33. The pin shaft rod 34 and the fork 35 are parallel. The pin shaft rod 34 and the fork 35 are respectively connected by pins, and the fork 35 can rotate around the pin. As Figure 9 shown, both the pin shaft rod 34 and the fork 35 are arranged in the left-right direction and the two are arranged one in front of the other. The pin shaft is perpendicular to the pin shaft rod 34 and the fork 35 and respectively connects the latter two.

[0051] For simplicity of description, taking the pin shaft hole as the boundary, the part of the fork 35 on the left side of the pin shaft hole is called the left part of the fork 35, and the part of the fork 35 on the right side of the pin shaft hole is called the right part of the fork 35.

[0052] One end of the fork points to the bag delivery notch 32 of the bag storage rack 44 and can contact the stand-up bag 12 in the bag delivery notch 32 so that the fork can push down the stand-up bag 12. A limit block 36 is arranged below the other end of the fork, and the limit block 36 is fixed on the first lifting device 33. Taking the pin shaft as the boundary, the weight of the side of the fork pointing to the bag delivery notch 32 is less than the weight of the opposite side. As Figure 10 shown, the side of the fork pointing to the bag delivery notch 32 is wedge-shaped. Combining Figure 9 、 10 shown, the right part of the fork points to the bag delivery notch 32, and the weight of the left part of the fork 35 is greater than the weight of the right part. The fork 35 always sags to the left under the action of gravity, but the left lower end of the fork 35 is supported by the limit block 36, so the fork remains horizontal or nearly horizontal. When the first lifting device 33 moves downward, it drives the fork 35 to move downward. The right part of the fork 35 pushes down the stacked stand-up bags 12 in the bag delivery notch 32. The stand-up bag 12 has an upward reaction force on the right part of the fork 35. Therefore, the fork 35 has a tendency to rotate around the pin shaft with the left side downward and the right side upward. However, the left end of the fork 35 is blocked by the limit block 36 below, so the fork 35 will not rotate and remains in the existing state, thus being able to push down the stand-up bag 12. Since the fork moves downward with the first lifting device 33 and pushes down the stand-up bag 12 to move downward a certain height, forcing the lower stand-up bag 12 to exit from the lower outlet of the bag delivery notch 32, the upper part of the bag delivery notch 32 is vacant, so new stand-up bags 12 will be replenished. Therefore, the upper end of the right part of the fork 35 is also pressed by the upper stand-up bag 12.

[0053] Based on the fact that the bag storage rack 44 includes a vertical part and a curved part connecting its lower end, the first lifting device 33 of the lifting and bag pushing device linearly moves up and down along the vertical part of the bag storage rack 44. After the first lifting device 33 of the lifting and bag pushing device runs upward to the upper initial position, it triggers the first upper limit sensor to send a limit signal. Every time the first lifting device 33 moves downward by a set unit length, one stand-up bag is pushed into the bag clip 18 on the chain of the power transmission assembly to achieve bag loading. A sensor is installed at the lower outlet of the bag delivery notch 32 of the bag storage rack, and a bag loading signal is generated every time a bag loading operation occurs. When the first lifting device 33 moves downward to the lower set position, it triggers the first lower limit sensor and sends a limit signal. At the same time, bag loading stops, reminding the user to load stand-up bags.

[0054] When the fork 35 descends to a certain position with the first lifting device 33 and then needs to ascend to a certain height with the first lifting device 33 and then descend again with the first lifting device 33 to press down the stand-up bag 12 in the bag feeding assembly 8 to realize the continuous bag output of the stand-up bag 12 in the bag feeding assembly 8, and push out the stand-up bag 12 at the lowest outlet of the bag feeding assembly 8 and send it into the bag clip 18.

[0055] When the fork 35 moves upward with the first lifting device 33, the stand-up bag 12 above the right part of the fork 35 exerts a downward force on the right part of the fork 35, forcing the fork 35 to rotate with the right side downward and the left side upward around the pin shaft. Since there is no obstruction above the left part of the fork 35, the actual effect of the right end of the fork 35 rotating downward around the pin shaft and the left end of the fork 35 rotating upward around the pin shaft can be produced, so that the right part of the fork 35 rotates out of the stacked stand-up bags 12 and only contacts the side of the stand-up bag 12 and keeps moving upward with the first lifting device 33. Therefore, the stand-up bag 12 in the bag feeding assembly 8 will not block the upward movement of the fork 35. After the fork 35 rises to the required height, the first lifting device 33 moves downward again, the fork 35 moves downward, and the right part of the fork 35 presses down the stand-up bag 12 stacked in the bag feeding notch 32 again. Through the limit block 36, the fork can only move the stand-up bag 12 in one direction.

[0056] In order to further facilitate the rotation of the fork 35 out of the stacked stand-up bags 12, reduce the contact resistance between the fork 35 and the stand-up bag 12 when the fork 35 moves upward, prevent the left part of the fork 35 from flipping to the right, and make the force applied to press down the stand-up bag 12 in the bag feeding assembly 8 more uniform and stable when the fork 35 moves downward, the right part of the fork 35 is set as a wedge shape with a flat bottom, an inclined upper part and gradually thickening from the right end to the middle.

[0057] The power transmission component operates to sequentially rotate a plurality of bag clips 18 distributed on the chain to the lower outlet of the bag delivery notch 32 at the outlet of the bag delivery component 8 to receive the stand-up bag 12 pushed out from the outlet of the bag delivery component 8. Each bag clip 18 receives one stand-up bag 12. One bag clip 18 stops at the outlet of the bag delivery component 8 to receive the bag, and then the chain rotates to drive the next bag clip 18 to stop at the outlet of the bag delivery component 8 to receive the bag. Correspondingly, the fork 35 moves downward to push and squeeze the stand-up bag 12 in the bag delivery component 8 to discharge the bag, wait, and the fork 35 moves downward again to push and squeeze the stand-up bag 12 in the bag delivery component 8 to discharge the bag. It can be set that each downward stroke of the fork 35 corresponds to sending one stand-up bag 12 from the bag delivery component 8 into the bag clip 18, and the waiting time between two downward movements of the fork 35 corresponds to the rotation time of the chain between the bag receiving of two bag clips 18, so that when the fork 35 moves downward to push and squeeze the stand-up bag 12, it can exactly and accurately push one stand-up bag 12 in the bag delivery component 8 into one bag clip 18. Alternatively, after the sensor provided at the lower outlet of the bag delivery notch 32 detects that the empty bag clip 18 on the chain 19 rotates to the outlet of the bag delivery component 8, the power transmission component stops rotating, the fork 35 moves downward to push and squeeze the stand-up bag 12 in the bag delivery component 8 to discharge the bag. After the sensor detects that this empty bag clip 18 receives the stand-up bag 12, the power transmission component rotates again to repeat the above actions. In other embodiments, the chain between the driving wheel 17 and the driven wheel 20 can also be replaced with a belt.

[0058] Combined Figure 1 、 4 As shown, in order to meet the requirement of using the same packaging machine to inject gas and liquid into the same stand-up bag successively, the gas injection control subsystem of the fluid special nozzle stand-up bag packaging machine is located in front of the liquid injection control subsystem. Different gases can be injected according to needs, such as injecting protective gases like nitrogen to extend the shelf life of the packaged product, or injecting carbon dioxide to improve the taste of the medicine.

[0059] The gas injection control subsystem includes an air outlet terminal, a second lifting device, and an electromagnetic valve. The electromagnetic valve is installed above the air outlet terminal to control the switch of the gas supply device connected to the air outlet terminal, that is, to control the switch of the inert oxygen component. The second lifting device is installed on the frame and drives the air outlet terminal to lift.

[0060] When the sensor installed at the station where the gas injection control subsystem is located senses that there is a stand-up bag at this station, the second lifting device of the gas injection control subsystem drives the air outlet terminal to move downward to the gas injection position, opens the electromagnetic valve, and starts injecting gas into the stand-up bag. After the injection is completed, the electromagnetic valve is closed, and the second lifting device drives the air outlet terminal to move upward to the fixed position. The power transmission component continues to transport the stand-up bag to the next station. The gas injection control subsystem also includes a second upper limit sensor and a second lower limit sensor for defining the upper and lower operating stop positions of the air outlet terminal.

[0061] CombinedFigure 1 , 4 As shown in Figures 7, 8, the liquid injection control subsystem 11 includes a peristaltic pump, a liquid outlet valve, a liquid supply pipeline, a limit frame 23, a third lifting device 25, a liquid injection nozzle 30, a plug rod 29, a guide rail rod 26, and a compression spring 27. A precise peristaltic pump and an advanced stepper motor are used to control the filling volume of the liquid medicine, ensuring that the dosage accuracy of the liquid medicine filled into the stand-up pouch is controlled within 1 ml.

[0062] The limit frame 23 and the third lifting device 25 are installed on the frame 21. In this embodiment, the limit frame 23 is connected to the frame 21 through an adapter frame.

[0063] The liquid injection nozzle 30 is installed on the third lifting device 25. The plug rod 29 is arranged above the liquid injection nozzle 30. The liquid injection nozzle 30 has a vertical liquid inlet channel and an upper end opening. The upper part of the guide rail rod 26 is fixed on the third lifting device 25. The lower part of the guide rail rod 26 is sleeved and inserted into the axial hole of the upper part of the plug rod 29 and the two can move relative to each other. The compression spring 27 is sleeved outside the guide rail rod 26. The lower end of the compression spring 27 abuts against the upper end of the plug rod 29, and the upper end of the compression spring 27 abuts against the connection part between the upper part of the guide rail rod 26 and the third lifting device 25. Therefore, the compression spring 27 can push the plug rod 29 downward to block the liquid inlet channel of the liquid injection nozzle 30. The liquid injection nozzle 30 and the guide rail rod 26 are lifted and lowered together with the third lifting device 25.

[0064] In this embodiment, the liquid injection nozzle 30 is a straight pipe, the lower end is the liquid outlet, and the upper end is the liquid inlet. The plug rod 29 can open or block the upper liquid inlet; in other embodiments, the liquid injection nozzle 30 can be a tee. In addition to the upper and lower openings of the straight pipe, there is a liquid inlet on the side. The plug rod 29 can extend into the straight pipe from the upper opening to open or block the side liquid inlet. Therefore, the plug rod 29 opening or blocking the liquid inlet channel of the liquid injection nozzle 30 can achieve the purpose of the present invention. The following takes the liquid injection nozzle 30 as a straight pipe, the lower end as the liquid outlet, and the upper end as the liquid inlet as an example for illustration.

[0065] The plug rod 29 is a stepped rod. The upper part of the plug rod 29 has a protruding step. The limit frame 23 is provided with a hole for the plug rod 29 to pass through, but the limit frame 23 realizes the downward limit of the plug rod 29 by supporting the upper step of the plug rod 29. Since the limit frame 23 is connected to the frame 21 and does not move, when the liquid injection nozzle 30 and the plug rod 29 move downward with the third lifting device 25 by a certain height, the limit frame 23 holds the upper step of the plug rod 29 to prevent the plug rod 29 from continuing to move downward. At this time, the liquid injection nozzle 30 continues to move downward with the third lifting device 25 to the set position, then the plug rod 29 disengages from the liquid inlet of the liquid injection nozzle 30, and the liquid inlet of the liquid injection nozzle 30 is unblocked and open, and the liquid injection nozzle 30 can inject liquid into the stand-up pouch 12; at the same time, the guide rail rod 26 moves downward with the third lifting device 25 to further compress the compression spring 27.

[0066] When the liquid injection of the stand-up pouch 12 is completed, when the liquid injection nozzle 30 and the guide rail rod 26 move upward to a certain height with the third lifting device 25, the plug rod 29 contacts the liquid inlet of the liquid injection nozzle 30 to block the liquid inlet of the liquid injection nozzle 30, and the compression spring 27 is appropriately relaxed. Subsequently, the third lifting device 25 continues to drive the liquid injection nozzle 30 and the guide rail rod 26 to move upward to the set height and then stops moving upward. At the same time, the liquid injection nozzle 30 pushes the plug rod 29 upward. The end of the plug rod 29 can be configured with a flexible material such as rubber to improve the sealing effect.

[0067] In order to be able to adjust the separation of the plug rod 29 from the liquid inlet of the liquid injection nozzle 30 when the plug rod 29 moves downward with the third lifting device 25 at a set descending position, a retaining ring 28 is fixedly arranged on the outer periphery of the plug rod 29 and below the upper step. The retaining ring 28 on the outer periphery of the plug rod 29 supported by the limit frame 23 can prevent the plug rod 29 from continuing to move downward. When the retaining ring 28 is at a higher axial position of the plug rod 29, the position where the limit frame 23 supports the plug rod 29 is at a higher axial position of the plug rod 29. Therefore, the liquid injection nozzle 30 and the plug rod 29 need to move downward by a larger height with the third lifting device 25 to achieve the separation of the plug rod 29 from the liquid inlet of the liquid injection nozzle 30. On the contrary, when the retaining ring 28 is at a lower axial position of the plug rod 29, the liquid injection nozzle 30 and the plug rod 29 can move downward by a smaller height with the third lifting device 25 to achieve the separation of the plug rod 29 from the liquid inlet of the liquid injection nozzle 30. Since the retaining ring 28 can be adjusted axially along the plug rod 29, in the case where the installation positions of the third lifting device 25 and the limit frame 23 are fixed, the length of the plug rod 29 is fixed, and the liquid injection nozzle 30 moves downward with the third lifting device 25 to a fixed height and meets the relative liquid injection position requirements of the stand-up pouch 12, adjusting the position of the retaining ring 28 can enable the liquid injection control subsystem 11 to meet the requirement of separating the plug rod 29 from the liquid inlet of the liquid injection nozzle 30 at a set position, without repeatedly adjusting the installation of other components or replacing components, making the installation simple.

[0068] Combined Figure 7 、 8 As shown, in this embodiment, the liquid injection control subsystem 11 further includes a liquid injection box, which is fixed on the third lifting device. A through hole is provided at the top of the liquid injection box for the plug rod 29 to extend into the inner cavity, a through hole is provided at the bottom of the liquid injection box for the liquid injection nozzle 30 to extend out, the liquid inlet of the liquid injection nozzle 30 is located in the inner cavity of the liquid injection box, and a through hole is provided on the side of the liquid injection box for the liquid supply pipeline to be inserted. During operation, the liquid supply pipeline feeds liquid into the inner cavity of the liquid injection box. Through the aforementioned actions, when the plug rod 29 disengages from the liquid inlet of the liquid injection nozzle 30, the liquid injection nozzle 30 injects liquid into the stand-up pouch 12, and when the plug rod 29 blocks the liquid inlet of the liquid injection nozzle 30, it no longer injects liquid into the stand-up pouch 12.

[0069] The outlet of the peristaltic pump of the liquid injection control subsystem 11 is connected to the liquid supply pipeline. The liquid outlet valve controls the liquid outlet of the peristaltic pump. When the sensor on the station of the liquid injection control subsystem 11 senses that there is a self-standing bag at this station, the third lifting device 25 of the liquid injection control subsystem 11 drives the liquid injection nozzle 30 to move downward to the liquid injection position. The liquid outlet valve opens, and the peristaltic pump pumps the liquid medicine out of the pot body and transports it to the liquid injection nozzle 30. After the liquid injection is completed, the peristaltic pump is turned off. The third lifting device 25 drives the liquid injection nozzle 30 to move upward to the initial position, the liquid outlet valve is closed, and the power transmission component transports the self-standing bag to the next station. The liquid injection control subsystem 11 also includes two sensors, namely a third upper limit sensor and a third lower limit sensor, which are used to define two stop positions for the lifting operation of the liquid injection nozzle 30.

[0070] The capping control subsystem includes a lower cover assembly 14, a capping assembly 15 and a fourth lifting device.

[0071] Combined Figure 1 、 4 As shown in Figures 11 and 12, the lower cover assembly 14 includes a discharger 38 and a blanking guide rail 37. The discharger selects a mature technology product, such as a vibrating disk, etc.

[0072] On the left and right sides of the outlet of the blanking guide rail 37, spring pieces 43 are arranged, and an elastic pressing plate 42 is arranged on the upper part. Along the outlet direction of the blanking guide rail 37, that is, the traveling direction of the capping in the blanking guide rail 37, the left and right spring pieces 43 and the upper pressing plate 42 extend beyond the bottom blanking guide rail 37. The upper pressing plate 42 extends beyond the left and right spring pieces 43. The upper pressing plate 42 obliquely approaches the top of the left and right spring pieces 43. The left and right spring pieces 43 are relatively close to each other and the minimum distance is less than the outer diameter of the capping. The length of the minimum distance position of the left and right spring pieces 43 along the outlet direction of the bottom blanking guide rail 37 is less than the radius of the capping. The spring pieces 43 on both sides provide auxiliary elastic force for the capping to stay at the outlet of the blanking guide rail 37.

[0073] In order to fix the pressing plate 42 and provide elastic force for the pressing plate 42, the lower cover assembly 14 further includes a bracket and a torsion spring 40 that are fixed on the blanking guide rail 37 and located above the blanking guide rail 37. A fixed shaft 41 and a limit shaft 39 are arranged on the bracket. The torsion spring 40 is sleeved on the fixed shaft 41. One end of the torsion spring 40 abuts against the limit shaft 39. The pressing plate 42 is L-shaped. One side of the pressing plate 42 extends along the outlet direction of the blanking guide rail 37, and the other side of the pressing plate 42 extends upward away from the blanking guide rail 37, and convex ears extending in the direction opposite to the outlet direction of the blanking guide rail 37 are arranged on both sides of this side. It is rotatably connected to the fixed shaft 41 through the through holes on the convex ears. The other end of the torsion spring 40 presses on this side of the pressing plate 42 that extends upward away from the blanking guide rail 37, and then uses the elastic force of the torsion spring 40 to elastically press the side of the pressing plate 42 that extends along the outlet direction of the blanking guide rail 37 downward against the blanking guide rail 37.

[0074] With the above structure, the screw cap can be clamped at the outlet of the blanking guide rail 37 and the lower part of the screw cap is suspended. Moreover, the blanking guide rail 37 extends obliquely downward and along the running direction of the chain. The outlet of the blanking guide rail 37 is located above the bag clip 18 of the chain. Then, when the stand-up bag 12 continues to be transported by the power transmission component through the outlet of the blanking guide rail 37 after being filled with liquid by the liquid injection control subsystem 11, the bag mouth of the stand-up bag 12 can hook the screw cap at the outlet of the blanking guide rail 37 and use the elasticity of the pressing plate 42 to buckle the screw cap on the bag mouth of the stand-up bag 12, and the screw cap is taken away by the stand-up bag 12. After the power transmission component transports the bag with the screwed cap to the station where the screw cap assembly 15 is located, the sensor at this station detects the stand-up bag. The fourth lifting device of the sealing control subsystem drives the screw cap assembly to move downward to the screw cap position. The screw cap assembly tightens the screw cap on the stand-up bag. After completion, the fourth lifting device drives the screw cap assembly to move upward to the initial position. The power transmission component continues to transport the stand-up bag to the bag dropping station and then drops the bag. The stand-up bag slides out from the sliding plate 7. The bag dropping station is also provided with a sensor for sensing the dropped bag to count the number of dropped bags.

[0075] Combined with Figure 4 、 5 As shown in FIGS. 6, the cleaning control subsystem includes a liquid discharging assembly 13. The liquid discharging assembly 13 includes a movable linear module and pipelines. The linear module drives the pipelines to move. During liquid discharging, it moves to below the outlet of the liquid injection nozzle 30 of the liquid injection control subsystem 11. When not discharging liquid, it moves to a position that does not interfere with the power transmission component transporting the stand-up bag 12. Since the residual liquid medicine in the cleaning packaging machine is the pot body for storing the liquid medicine in the cleaning packaging machine and the components through which the liquid medicine flows in the liquid injection control subsystem, the pot body, the stirring device, and the related components of the liquid injection control subsystem are actually still used during cleaning. To avoid overlapping classification during definition, the cleaning control subsystem in this application includes the liquid discharging assembly 13. However, when performing the cleaning work, the cleaning control subsystem still needs to call the pot body, the stirring device, and the related components of the liquid injection control subsystem.

[0076] When cleaning the liquid medicine in the cleaning packaging machine, add clean water into the pot body 1, control the stirring device to rotate at a fixed speed to stir the water in the pot body. After the sensor at the station where the liquid injection control subsystem is located detects that there is no stand-up bag at this station, the linear module of the liquid discharging assembly drives the pipelines of the liquid discharging assembly to run to below the station where the liquid injection control subsystem is located. The pipeline inlet is directly opposite to the liquid injection nozzle outlet. The third lifting device 25 of the liquid injection control subsystem 11 drives the liquid injection nozzle 30 to move downward to the liquid injection position, the liquid outlet valve is opened, and the peristaltic pump pumps the waste liquid out of the pot body and flows to the liquid injection nozzle and injects it into the pipelines of the liquid discharging assembly. The pipelines of the liquid discharging assembly discharge the waste liquid outside the packaging machine case. After the liquid discharging is completed, the linear module of the liquid discharging assembly drives the pipelines of the liquid discharging assembly back to the initial position.

[0077] In other embodiments, in order to collect and discharge the spilled liquid medicine during filling, an inverted conical collecting tray is arranged below the liquid injection control subsystem 11 at a position that does not hinder the power transmission component from conveying the self-standing bag 12. A valve is provided at the liquid outlet of the collecting tray. When the liquid discharging component 13 discharges liquid, the linear module of the liquid discharging component drives the pipeline of the liquid discharging component to move to a position directly below the liquid outlet of the collecting tray. When not discharging liquid, the liquid discharging component moves to a position that does not hinder the power transmission component from conveying the self-standing bag 12.

[0078] The power transmission component is provided with a driving wheel 17, a driven wheel 20 and a chain, and can provide self-standing bags for each process involved in the bag feeding component 8, the inert gas injection control subsystem 10, the liquid injection control subsystem 11, the lower cover component 14, and the capping component 15. The intermittent rotation mechanism 16 of the power transmission component intermittently stops, so that the self-standing bag 12 can accurately stay at a predetermined working station to complete related operations. The intermittent rotation mechanism of the power transmission component can specifically be implemented by a connecting rod mechanism, a indexing cam mechanism (cam divider), a Geneva mechanism, an incomplete gear mechanism or a pinwheel mechanism, etc.

[0079] There are various implementation methods for the driving of the first lifting device 33, the second lifting device, the third lifting device 25, the fourth lifting device, and the linear module of the liquid discharging component 13, such as pneumatic, hydraulic or electric, and no matter which one, it should be included in the present invention.

[0080] Taking single machine operation as an example for description. During operation, the operator presses the power-on button 3 to start, clicks on the operation plane 2 of the packaging machine, enters the parameter setting interface, sets the packaging parameters. After the setting is completed, the self-standing bag 12 is manually loaded into the bag feeding component 8. The operator clicks the start button, and the heating plate at the bottom of the pot body starts to heat the liquid medicine, and the stirring device starts to rotate and stir the liquid medicine in the pot body according to the set mode. The real-time packaging parameters and the real-time temperature of the liquid medicine are both displayed on the operation screen 2 of the display control subsystem. The liquid medicine fluid is formulated in the pot body 1 and enters the liquid injection control subsystem 11 through the liquid supply pipeline.

[0081] After the power transmission component receives the self-standing bag at the working station where the bag feeding component is located, it drives the self-standing bag to sequentially run to the working stations where the inert gas injection control subsystem, the liquid injection control subsystem, the sealing control subsystem are located and the bag dropping station, and respectively injects inert oxygen gas, fills, seals, and drops the bag to complete the packaging of the liquid medicine. Each working station is independent and does not interfere with each other. The stepping motor can accurately control the liquid output of the peristaltic pump. The stepping motor drives the peristaltic pump to pump the liquid medicine from the pot body into the self-standing bag. The entire packaging process will be fast and uniform, ensuring high efficiency and safety.

[0082] The packaging machine can also be networked through the network communication subsystem. When networking, it can be equipped with the decocting control center software, remotely log in, read the packaging process information, and remotely set packaging parameters, such as important information such as the stirring control mode, the liquid medicine control temperature, the packaging dose, and the number of self-standing bags.

[0083] The present application also provides a control method for a self-standing bag packaging machine for special fluid nozzles. Using the above control system, as Figure 13 shown, the following steps are executed:

[0084] S1. Set the packaging parameters through the local operation of the self-standing bag packaging machine for special fluid nozzles or remote operation through networking, and the packaging machine works according to the relevant parameters;

[0085] S11: Each station device, namely the bag loading control subsystem, the gas injection control subsystem, the liquid injection control subsystem, the sealing control subsystem, the temperature control subsystem, and the cleaning control subsystem, conducts self-inspection. After the self-inspection is successful, step S2 is executed; if a fault is found during the self-inspection, a fault is prompted; after the fault is repaired, the above self-inspection steps in step S11 are repeated.

[0086] S2. Perform bag loading, gas injection into the bag, liquid medicine filling, bag mouth sealing, and bag dropping operations at the stations where the bag loading control subsystem, the gas injection control subsystem, the liquid injection control subsystem, and the sealing control subsystem are located respectively and at independent stations above the bag dropping station.

[0087] When the bag loading control subsystem, the gas injection control subsystem, the liquid injection control subsystem, and the sealing control subsystem perform relevant operation actions, they respectively conduct self-inspection on whether the bag loading, gas injection, filling, and sealing are in place: if so, the next step is carried out until all filling is completed and then step S3 is executed; if not, a fault troubleshooting is prompted, and after the fault is eliminated, the above self-inspection steps in step S2 are repeated again.

[0088] S3. After the liquid medicine filling is completed, the cleaning control subsystem cleans the residual liquid medicine in the packaging machine and discharges it.

[0089] In step S2, when the self-standing bag drops, the sensor at the bag dropping station detects the bag drop, and then increases the count of the number of completed packaging bags by 1 bag, and counts whether the number of completed packaging bags reaches the set number of bags, so as to judge whether all filling is completed.

[0090] A control system and a control method for a self-standing bag packaging machine for special fluid nozzles of the present invention. Among them, the control system of the self-standing bag packaging machine for special fluid nozzles includes a bag loading control subsystem, an air injection control subsystem, a liquid injection control subsystem, a sealing control subsystem, a temperature control subsystem, and a cleaning control subsystem that work on independent workstations, respectively for supplying bags, injecting gas into the bags, filling the liquid medicine, sealing the bag mouth, controlling the temperature of the liquid medicine to be filled, and cleaning and discharging the residual liquid medicine in the packaging machine. The centralized liquid injection and bag making packaging process is split into several independent workstations such as bag loading, injecting inert oxygen gas, filling, sealing, and discharging the bag. Each workstation does not interfere with each other. A monitoring function is added to each workstation. In case of any failure in any process, the machine can be stopped for maintenance. When a failure occurs in the equipment of each workstation, it can automatically stop in time without causing the equipment of other workstations to malfunction, avoiding accidents such as continuous spilling of liquid medicine and the inability to discharge the air in the packaging bag. It can meet the need of filling inert oxygen gas and liquid medicine successively, can automatically clean and drain the liquid after filling, and is compatible with networked or single-machine operation. When operating in a networked manner, it can save manpower. It can be adaptively adjusted according to the product type and packaging size, improving the automation and efficiency of the packaging process. At the same time, it is easy to operate, safe and reliable. Using prefabricated self-standing bags, the bag making step is cancelled, eliminating accidents and failures in the bag making process. After the self-standing bag is filled, it can stand on the table, and the packaging can be opened by unscrewing the cap when drinking, improving the packaging grade of the packaged product, and being more convenient and hygienic.

[0091] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the above-mentioned technical content as equivalent embodiments of equivalent changes. The implementation schemes in the above embodiments can also be further combined or replaced. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A control system for a fluid-specific nozzle stand-up bag packaging machine, characterized in that: It includes the bag loading control subsystem, gas injection control subsystem, liquid injection control subsystem, sealing control subsystem, temperature control subsystem and cleaning control subsystem working in independent workstations, which respectively supply bags, inject gas into bags, fill medicine liquid, seal bag openings, control the temperature of medicine liquid to be filled, and clean and discharge residual medicine liquid in the packaging machine.

2. The control system of the fluid-specific nozzle stand-up bag packaging machine according to claim 1 is characterized in that: It also includes a display control subsystem, through which the heating temperature of the liquid medicine in the liquid medicine storage container and the stirring rate, packaging volume, number of bags, and fine-tuning amount of the stirring device are set through human-computer interaction, and various parameters of the packaging process and the real-time status of each sensor are displayed.

3. The control system of the fluid-specific nozzle stand-up pouch packaging machine according to claim 2, characterized in that: It also includes a network communication subsystem, which communicates with an external medicine decoction control center. The medicine decoction control center software realizes remote control of a single packaging machine or multiple packaging machines; the packaging machine is compatible with network control and stand-alone use; It also includes a safety control subsystem, which can suspend the operation of related subsystems under abnormal conditions and issue an alarm.

4. The control system of the fluid-specific nozzle stand-up pouch packaging machine according to claim 3, characterized in that: The bag feeding control subsystem includes a bag feeding assembly, which includes a bag storage rack, a lifting and bag shifting device, a first upper limit sensor and a first lower limit sensor. The bag storage rack includes a vertical portion and a curved portion connected to the lower end thereof. The bag storage rack is provided with a bag delivery notch that passes through the upper and lower ends. The lifting and shifting bag device can move up and down and push the self-supporting bag located in the bag delivery notch of the bag storage rack downward. The lifting and shifting bag device stops moving upward after triggering the first upper limit sensor when it moves upward, and stops moving downward after triggering the first lower limit sensor when it moves downward. The bag lifting and shifting device comprises a first lifting device and a shift fork. The middle part of the shift fork is rotatably mounted on the first lifting device through a pin shaft. One end of the shift fork points to the bag delivery notch of the bag storage rack and can contact the self-supporting bag in the bag delivery notch. A limit block is arranged below the other end of the shift fork. The limit block is fixed on the first lifting device. With the pin shaft as the boundary, the weight of the side of the shift fork pointing to the bag delivery notch of the bag storage rack is less than the weight of the opposite side.

5. The control system of the fluid-specific nozzle stand-up pouch packaging machine according to any one of claims 1 to 4, characterized in that: The gas injection control subsystem includes a gas outlet terminal, a second lifting device and a solenoid valve, the solenoid valve controls the switch of the gas supply device connected to the gas outlet terminal, and the second lifting device drives the gas outlet terminal to rise and fall; The gas injection control subsystem also includes a second upper limit sensor and a second lower limit sensor, which are used to limit the upper and lower running stop positions of the gas outlet terminal.

6. The control system of the fluid-specific nozzle stand-up pouch packaging machine according to claim 5, characterized in that: The cleaning control subsystem includes a drainage component, which includes a movable linear module and pipeline. The linear module drives the pipeline to move. When draining, it moves to the bottom of the station where the injection control subsystem is located to collect waste liquid. When not draining, it moves to a position that does not hinder the power transmission component from transporting the self-supporting bag.

7. A control method for a fluid-specific nozzle stand-up bag packaging machine, characterized in that: Using the control system described in any one of claims 1 to 6 above, execute step S2: carry out bagging, bag injection, liquid filling, bag sealing and bag dropping operations at the bag loading control subsystem, gas injection control subsystem, liquid injection control subsystem, sealing control subsystem and bag dropping stations, which are independent of each other.

8. The control method of a fluid-specific nozzle stand-up pouch packaging machine according to claim 7, characterized in that: There is step S1 before step S2, and there is step S3 after step S2. S1. Set the packaging parameters through local operation or online remote operation, and the packaging machine works according to the relevant parameters; S3. After the liquid medicine filling is completed, the cleaning control subsystem cleans the residual liquid medicine in the packaging machine and discharges it.

9. The control method of a stand-up pouch packaging machine with a special nozzle for fluid according to claim 8, characterized in that: Before step S2, the method further includes step S11: the equipment at each workstation performs self-inspection, and after the self-inspection succeeds, step S2 is executed; if a fault is found during the self-inspection, a fault prompt is given; After the fault is repaired, the above self-checking steps in step S11 are repeated.

10. The control method of a stand-up pouch packaging machine with a special nozzle for fluid according to claim 9, characterized in that: In step S2, the bagging control subsystem, gas injection control subsystem, liquid injection control subsystem, and sealing control subsystem respectively self-check whether bagging, gas injection, filling, and sealing are in place when performing related actions: if so, proceed to the next step, and execute step S3 after all filling is completed; if not, it prompts troubleshooting, and repeats the above self-checking steps in step S2 again after the troubleshooting.

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