Suction nozzle doypack packaging machine special for fluid

Abstract

The invention discloses a special fluid suction nozzle standing pouch packaging machine which comprises a power assembly, a pouch feeding assembly, a liquid injection assembly, a lower cover assembly and a rotary cover assembly, prefabricated standing pouches are used, the power assembly conveys the standing pouches sent out from the pouch feeding assembly to the position below the liquid injection assembly one by one for filling, then the standing pouches are conveyed to the lower cover assembly, and rotary covers are buckled; and then the bag is conveyed to the cap screwing assembly to screw the cap, and then the bag falls. The mechanism is stable and reliable, original concentrated procedures are divided into independent stations, and the stations do not interfere with one another. Monitoring can be added for each station, shutdown maintenance can be carried out when any procedure breaks down, accidents such as continuous liquid medicine scattering are avoided, filling can be stopped as needed sensitively and reliably, liquid can be discharged automatically, the requirement for filling different substances in sequence can be met, bag feeding is accurate, simple and convenient, finished product prefabricated self-standing bags are adopted for filling, accidents and faults in the bag making procedure are reduced, and the production efficiency is improved. And the package can be opened by unscrewing the screw cap during drinking, so that the package grade of the package is improved, and convenience and sanitation are realized.

Description

Technical Field

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

[0002] Before the Chinese medicine liquid and coagulated paste that have completed decocting and dispensing are sent to patients, they need to be packaged for transportation and storage. Common liquid or paste 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 in the packaging bag after it is completed.

[0003] Since packaging and liquid injection are completed on the same head, the cooperation requirements between processes are relatively high, and the integration degree is too high. Therefore, it is difficult to add an induction detection function for troubleshooting. For example, when there is a problem with the packaging part of the liquid or paste packaging equipment, 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 average, making the grade of the pharmaceutical product seem insufficient. For the packaged liquid medicine or paste, opening the package is also relatively cumbersome and requires tools such as scissors. It is also easy to leak liquid when cutting the bag.

[0004] For the filling of fluids, it is very important to be able to stop the fluid filling urgently as needed. Otherwise, it is impossible to stop the filling in time in case of a malfunction, resulting in a large amount of liquid medicine being spilled. Therefore, a very sensitive filling mechanism is required. At the same time, a relatively simple liquid drainage mechanism is needed for the cleaned or spilled fluid. For the filling of liquid medicine, it may be necessary to fill different substances separately one after another. Therefore, a filling device with multiple workstations is required to meet the requirements. For the delivery of fluid packaging bags, it needs to be simple and accurate, reducing the complexity of operation.

[0005] In view of this, the present invention is specifically proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a fluid-specialized nozzle self-standing bag packaging machine that can fill and package according to process workstations, stop filling sensitively and reliably, can automatically drain liquid, can meet the need of filling different substances successively, deliver bags accurately and simply, and the finished product is convenient and hygienic to use.

[0007] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A fluid-specialized nozzle self-standing bag packaging machine includes a power assembly, a bag delivery assembly, a liquid injection assembly, a lower cover assembly, and a capping assembly. The power assembly transports the self-standing bags sent out by the bag delivery assembly one by one to the lower part of the liquid injection assembly for filling, then transports them to the lower cover assembly to buckle on the capping, and then transports them to the capping assembly to tighten the capping.

[0009] Furthermore, the fluid-specialized suction nozzle stand-up pouch packaging machine further includes a perfusion assembly, which is located in front of the liquid injection assembly and can perfuse gas or substances different from those perfused by the liquid injection assembly as required.

[0010] Furthermore, the bag feeding assembly includes a bag storage rack and a lifting and pushing bag device. The bag storage rack includes a vertical part and a curved part connected to its lower end. A bag feeding notch penetrating up and down is provided on the bag storage rack, and the lifting and pushing bag device can move up and down and push down the stand-up pouch located in the bag feeding notch of the bag storage rack.

[0011] Furthermore, the lifting and pushing bag 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 stand-up pouch 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 that of the opposite side.

[0012] Furthermore, the side of the fork pointing to the bag feeding notch of the bag storage rack is wedge-shaped.

[0013] Furthermore, the liquid injection assembly includes a second lifting device, a liquid injection nozzle, and a plug rod. The liquid injection nozzle is installed on the second lifting device. After the liquid injection nozzle descends to a set height with the second lifting device, the plug rod disengages from the liquid inlet channel of the liquid injection nozzle. After the liquid injection nozzle ascends to a set height with the second lifting device, the plug rod blocks the liquid inlet channel of the liquid injection nozzle.

[0014] Furthermore, the fluid-specialized suction nozzle stand-up pouch packaging machine further includes a frame. The liquid injection assembly further includes a guide rail rod, a spring, and a limit frame. The limit frame and the second lifting device are connected to the frame. The upper part of the guide rail rod is fixed on the second lifting device. The lower part of the guide rail rod is sleeved in the axial hole at the upper part of the plug rod and the two can move relative to each other. The compression spring is sleeved outside the guide rail rod, and the lower end of the compression spring abuts against the upper end of the plug rod. The limit frame can limit the downward movement of the plug rod, and the plug rod is located above the liquid inlet of the upper end of the liquid injection nozzle.

[0015] Furthermore, the plug rod is a stepped rod, and the upper part of the plug rod has a step protruding outwards. The limit frame realizes the downward limit of the plug rod by supporting the step. After the limit, the liquid injection nozzle descends with the second lifting device, and the plug rod disengages from the liquid inlet of the liquid injection nozzle.

[0016] Furthermore, the lower cover assembly includes a blanking guide rail. Spring pieces are arranged on the left and right sides at the outlet of the blanking guide rail, and an elastic pressing plate is arranged on the upper part.

[0017] Along the outlet direction, the left and right spring pieces and the upper pressing plate extend beyond the bottom blanking guide rail. The upper pressing plate extends beyond the left and right spring pieces. The upper pressing plate obliquely approaches the top of the left and right spring pieces. The left and right spring pieces approach each other relatively, and the minimum distance is less than the outer diameter of the screw cap. The length of the position of the minimum distance between the left and right spring pieces and the bottom blanking guide rail along the outlet direction is less than the radius of the screw cap.

[0018] Further, the fluid-specialized suction nozzle stand-up pouch packaging machine further includes a liquid discharge assembly, which includes a movable linear module and a pipeline. The linear module drives the pipeline to move. During liquid discharge, it moves to the position below the liquid injection nozzle outlet of the liquid injection assembly, and when not discharging liquid, it moves to a position that does not interfere with the power assembly's transportation of stand-up pouches.

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

[0020] A fluid-specialized suction nozzle stand-up pouch packaging machine of the present invention includes a power assembly, a bag feeding assembly, a liquid injection assembly, a lower cover assembly, and a capping assembly. It uses prefabricated stand-up pouches. The power assembly transports the stand-up pouches sent out in the bag feeding assembly one by one to the position below the liquid injection assembly for filling, then transports them to the lower cover assembly to buckle on the capping, and then transports them to the capping assembly to tighten the capping, and then drops the bag. The mechanism of the fluid-specialized suction nozzle stand-up pouch packaging machine of the present invention is stable and reliable. It splits the original centralized process into independent workstations, which do not interfere with each other. And monitoring can be added to each workstation. Any malfunction in any process can stop the machine for maintenance, avoiding accidents such as continuous spillage of liquid medicine. It can stop filling on demand sensitively and reliably, can automatically discharge liquid, can meet the need of filling different substances successively, and the bag feeding is accurate, simple and convenient. Using finished prefabricated stand-up pouches for filling, on the one hand, it reduces accidents and malfunctions in the bag-making process. On the other hand, after the stand-up pouch is filled, it can stand on the table, and when drinking, just unscrew the capping to open the package, 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. Description of the Drawings

[0022] The accompanying drawings, as a 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 accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:

[0023] Figure 1 is the overall schematic diagram of a fluid-specialized suction nozzle stand-up pouch packaging machine of the present invention;

[0024] Figure 2 is Figure 1 the left view of

[0025] Figure 3 is Figure 1 the top view of

[0026] Figure 4It is a schematic diagram of a partial structure of a self-standing bag packaging machine for a special fluid of the present invention;

[0027] Figure 5 It is Figure 4 the left view of;

[0028] Figure 6 It is Figure 4 the top view of;

[0029] Figure 7 It is a schematic diagram of the structure of a liquid injection component of a self-standing bag packaging machine for a special fluid of the present invention;

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

[0031] Figure 9 It is a schematic diagram of the structure of a bag feeding component of a self-standing bag packaging machine for a special fluid of the present invention;

[0032] Figure 10 It is a schematic diagram of the structure of a fork;

[0033] Figure 11 It is a schematic diagram of the structure of a lower cover component of a self-standing bag packaging machine for a special fluid of the present invention;

[0034] Figure 12 It is Figure 11 the partial enlarged view of.

[0035] In the figure: 1, pot body; 7, sliding plate; 8, bag feeding component; 10, filling component; 11, liquid injection component; 12, self-standing bag; 13, liquid discharge component; 14, lower cover component; 15, cap screwing component; 16, intermittent rotation mechanism; 17, driving wheel; 18, bag clip; 20, driven wheel; 21, frame; 22, adapter frame; 23, limiting frame; 24, second adapter frame; 25, second 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, limiting block; 37, blanking guide rail; 38, discharger; 39, limiting shaft; 40, torsion spring; 41, fixed shaft; 42, pressing plate; 43, spring piece; 44, bag storage rack.

[0036] 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 reference to specific embodiments. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying 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.

[0038] 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. It 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.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, 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.

[0040] A special fluid suction nozzle self-standing bag packaging machine of the present invention includes a frame, a power assembly, a bag feeding assembly, a liquid injection assembly, a lower cover assembly, and a capping assembly. The power assembly transports the self-standing bags sent out by the bag feeding assembly one by one to the lower part of the liquid injection assembly for perfusion, then transports them to the lower cover assembly to buckle on the capping, and then transports them to the capping assembly to tighten the capping.

[0041] Combined with Figure 1 、 4 As shown, in order to meet the requirement of successively perfusing different substances into the same self-standing bag using the same packaging machine, the special fluid suction nozzle self-standing bag packaging machine further includes a perfusion assembly. The perfusion assembly is located in front of the liquid injection assembly and can perfuse gas or substances different from those perfused by the liquid injection assembly according to needs. The perfusion assembly can inject liquid or gas. For example, when mixing and preparing certain medicaments, the perfusion assembly can be used to inject medicament A into the self-standing bag, and then the self-standing bag is transported to the lower part of the liquid injection assembly to inject medicament B; or gas, such as a protective gas like nitrogen, can be injected by the perfusion assembly to extend the shelf life of the packaged product, or carbon dioxide can be injected to improve the taste of the medicament.

[0042] Combined with Figure 4 、 5, as shown in FIGS. 6, the power 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 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 for respectively receiving individual stand-up bags 12 coming out from the bag feeding assembly 8. The chain movement sequentially transports the stand-up bags 12 to the workstations where the filling assembly, the liquid injection assembly 11, the lower cover assembly 14, and the capping assembly 15 are located for relevant operations. In order to prevent the stand-up bags 12 from shaking at each workstation, causing failures in filling, liquid injection, capping, and screwing, guide rails can be arranged below the chain at each workstation to limit the stand-up bags 12.

[0043] Combined with Figures 1-5 , as shown in FIGS. 9 and 10, the bag feeding assembly 8 includes a bag storage rack 44 and a lifting bag pushing device. The bag storage rack 44 includes an upright portion and a curved portion connecting the lower end thereof. The curved portion and the upright portion transition into an arc shape and the end of the curved portion 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 bag pushing device can move up and down and push down the stand-up bags 12 located in the bag feeding notch 32, so that the stand-up bags 12 move downward along the bag feeding notch 32 from top to bottom and are successively sent out from the lower outlet of the bag feeding notch 32 and fall into the bag clips 18 on the chain of the power assembly. The stand-up bags 12 can be manually loaded into the bag feeding notch 32 until the bag feeding notch 32 is full.

[0044] The lifting bag pushing device of the bag feeding assembly 8 includes a first lifting device 33 and a fork. The middle 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.

[0045] In this embodiment, for the convenience of installing 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 through pins, and the fork 35 can rotate around the pin shaft. 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.

[0046] For the sake of simplified description, taking the pin shaft hole as the boundary, the part of the fork 35 located 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 located on the right side of the pin shaft hole is called the right part of the fork 35.

[0047] One end of the fork points to the bag - feeding notch 32 of the bag storage rack 44 and can contact the stand - up bag 12 in the bag - feeding notch 32 so that the fork can push the stand - up bag 12 downward. 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 - feeding notch 32 is less than the weight of the opposite side. As Figure 10 shown, the side of the fork pointing to the bag - feeding notch 32 is wedge - shaped. Combining Figure 9 、 10 shown, the right - hand part of the fork points to the bag - feeding notch 32, and the weight of the left - hand part of the fork 35 is greater than the weight of the right - hand part. Due to gravity, the left - hand side of the fork 35 always sags downward, but the left - hand 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 - hand part of the fork 35 pushes the stacked stand - up bags 12 in the bag - feeding notch 32 downward. The stand - up bag 12 has an upward reaction force on the right - hand part of the fork 35. Therefore, the fork 35 has a tendency to rotate around the pin shaft with the left - hand side downward and the right - hand side upward. However, the left - hand end of the fork 35 is stuck by the limit block 36, so the fork 35 does not rotate and maintains its current state, thus being able to push the stand - up bag 12 downward. Since the fork moves downward with the first lifting device 33 and pushes the stand - up bag 12 downward a certain height, forcing the lower stand - up bag 12 to exit from the lower outlet of the bag - feeding notch 32, the upper part of the bag - feeding notch 32 becomes empty, so new stand - up bags 12 will be replenished. Therefore, the upper end of the right - hand part of the fork 35 is also pressed by the upper stand - up bag 12 above it.

[0048] When the fork 35 moves downward with the first lifting device 33 to a certain position, it needs to move upward with the first lifting device 33 to a certain height and then move downward with the first lifting device 33 again to press the stand - up bag 12 in the bag - feeding assembly 8 downward, so as to continuously discharge the stand - up bag 12 in the bag - feeding assembly 8 and push the stand - up bag 12 at the lowest outlet of the bag - feeding assembly 8 into the bag clip 18.

[0049] When the fork 35 moves upward with the first lifting device 33, the stand - up bag 12 above the right - hand part of the fork 35 exerts a downward force on the right - hand part of the fork 35, forcing the fork 35 to rotate around the pin shaft with the right - hand side downward and the left - hand side upward. Since there is no obstruction above the left - hand part of the fork 35, the actual effect of the right - hand end of the fork 35 rotating downward around the pin shaft and the left - hand end of the fork 35 rotating upward around the pin shaft can be produced. Thus, the right - hand part of the fork 35 rotates out of the stacked stand - up bags 12, only contacting the side of the stand - up bag 12 and always moving upward with the first lifting device 33. Therefore, the stand - up bag 12 in the bag - feeding assembly 8 does not block the upward movement of the fork 35. After the fork 35 rises to the required height, for example, above the top - most stand - up bag 12, the first lifting device 33 moves downward again, the fork 35 moves downward, and the right - hand part of the fork 35 presses the stacked stand - up bags 12 in the bag - feeding notch 32 downward again. Through the limit block 36, the fork can only push the stand - up bag 12 in one direction.

[0050] In order to further facilitate the rotation and removal of the fork 35 from the stacked stand-up pouches 12, reduce the contact resistance between the fork 35 and the stand-up pouches 12 when the fork 35 moves upward, prevent the left part of the fork 35 from flipping to the right, and make the downward pressure on the stand-up pouches 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 upper inclined surface, and gradually thickening from the right end to the middle.

[0051] The power assembly operates to sequentially rotate a plurality of bag clips 18 distributed on the chain to the outlet of the bag feeding assembly 8, i.e., the lower outlet of the bag feeding notch 32, to receive the stand-up pouches 12 pushed out from the outlet of the bag feeding assembly 8. Each bag clip 18 receives one stand-up pouch 12. One bag clip 18 stops at the outlet of the bag feeding assembly 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 feeding assembly 8 to receive the bag. Correspondingly, the fork 35 moves downward to push and squeeze the stand-up pouches 12 in the bag feeding assembly 8 out of the bag, waits, and then the fork 35 moves downward again to push and squeeze the stand-up pouches 12 in the bag feeding assembly 8 out of the bag. It can be set that each downward stroke of the fork 35 corresponds to feeding one stand-up pouch 12 from the bag feeding assembly 8 into the bag clip 18, and the waiting time between two downward strokes 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 pouches 12, it can exactly and accurately push one stand-up pouch 12 in the bag feeding assembly 8 into one bag clip 18. Alternatively, a sensor is provided at the outlet of the bag feeding assembly 8. After the sensor detects that the empty bag clip 18 on the chain rotates to the outlet of the bag feeding assembly 8, the power assembly stops rotating, the fork 35 moves downward to push and squeeze the stand-up pouches 12 in the bag feeding assembly 8 out of the bag. After the sensor detects that this empty bag clip 18 receives the stand-up pouch 12, the power assembly rotates again, repeating 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.

[0052] Combined Figure 1 、 4 As shown in FIGS. 7 and 8, the liquid injection assembly 11 includes a limit frame 23, a second lifting device 25, a liquid injection nozzle 30, a plug rod 29, a guide rail rod 26, and a compression spring 27.

[0053] The limit frame 23 and the second 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.

[0054] The liquid injection nozzle 30 is installed on the second 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 second 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 of the upper part of the guide rail rod 26 and the second 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 second lifting device 25.

[0055] 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.

[0056] The plug rod 29 is a stepped rod. The upper part of the plug rod 29 has a step protruding outward. The limiting frame 23 is provided with a hole for the plug rod 29 to pass through, but the limiting frame 23 realizes the downward limit of the plug rod 29 by supporting the upper step of the plug rod 29. Since the limiting 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 second lifting device 25 by a certain height, the limiting 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 second 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 opened and unblocked, and the liquid injection nozzle 30 can inject liquid into the self-standing bag 12; at the same time, the guide rail rod 26 moves downward with the second lifting device 25 to further compress the compression spring 27.

[0057] When the liquid injection of the self-standing bag 12 is completed, when the liquid injection nozzle 30 and the guide rail rod 26 move upward with the second lifting device 25 to a certain height, the plug rod 29 contacts the liquid inlet of the liquid injection nozzle 30 and then blocks the liquid inlet of the liquid injection nozzle 30, and the compression spring 27 relaxes appropriately. Subsequently, the second 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 abuts against the plug rod 29 and moves upward. The end of the plug rod 29 can be configured with a flexible material such as rubber to improve the sealing effect.

[0058] In order to enable the plug rod 29 to be separated from the liquid injection nozzle 30's liquid inlet at a set descending position when the plug rod 29 descends with the second lifting device 25, a retaining ring 28 is fixedly arranged on the outer periphery of the plug rod 29 and below the upper step. The limiting frame 23 supporting the retaining ring 28 on the outer periphery of the plug rod 29 can prevent the plug rod 29 from descending further. When the retaining ring 28 is at a relatively high axial position on the plug rod 29, the position where the limiting frame 23 supports the plug rod 29 is at a relatively high axial position of the plug rod 29. Therefore, the liquid injection nozzle 30 and the plug rod 29 need to descend a greater height when moving downward with the second lifting device 25 to separate 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 relatively low axial position on the plug rod 29, the liquid injection nozzle 30 and the plug rod 29 can be separated from the liquid inlet of the liquid injection nozzle 30 with a smaller descending height when moving downward with the second lifting device 25. Since the retaining ring 28 can be adjusted axially along the plug rod 29, in the case where the installation positions of the second lifting device 25 and the limiting frame 23 are fixed, the length of the plug rod 29 is fixed, and the liquid injection nozzle 30 descends to a fixed height with the second lifting device 25 to meet the relative liquid injection position requirements with the self-standing bag 12, adjusting the position of the retaining ring 28 can enable the liquid injection assembly 11 to meet the requirement that the plug rod 29 and the liquid inlet of the liquid injection nozzle 30 are separated at a set position, without repeatedly adjusting the installation of other components or replacing components, making the installation simple.

[0059] Combined with Figure 7 、 8 As shown, in this embodiment, the liquid injection assembly 11 further includes a liquid injection box, which is fixed on the second 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 supplies liquid into the inner cavity of the liquid injection box. Through the aforementioned actions, when the plug rod 29 is separated from the liquid inlet of the liquid injection nozzle 30, the liquid injection nozzle 30 injects liquid into the self-standing bag 12, and when the plug rod 29 blocks the liquid inlet of the liquid injection nozzle 30, the liquid injection into the self-standing bag 12 stops.

[0060] Combined with Figure 1 、 4 As shown in 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.

[0061] On both the left and right sides at the outlet of the blanking guide rail 37, there are spring pieces 43, 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 advancing 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 tops 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 position of the minimum distance between the left and right spring pieces 43 and the length of the bottom blanking guide rail 37 along the outlet direction 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.

[0062] 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 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. Furthermore, the side of the pressing plate 42 that extends along the outlet direction of the blanking guide rail 37 is elastically pressed against the blanking guide rail 37 by using the elastic force of the torsion spring 40.

[0063] Through the above structure, the capping can be clamped at the outlet of the blanking guide rail 37 and the lower part of the capping is suspended. And the blanking guide rail 37 extends obliquely downward and along the advancing 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 self-standing bag 12 continues to be transported by the power assembly through the outlet of the blanking guide rail 37 after being filled with liquid from the liquid injection assembly 11, the bag mouth of the self-standing bag 12 can hook the capping at the outlet of the blanking guide rail 37 and use the elasticity of the pressing plate 42 to buckle the capping on the bag mouth of the self-standing bag 12, and the capping is taken away by the self-standing bag 12. After the power assembly transports the bag with the capping to the station where the capping assembly 15 is located and the capping is tightened by the capping assembly 15, it is then continuously transported to the bag dropping station and the bag drops and slides down from the slide plate.

[0064] Combined Figure 4 、 5As shown in FIGS. 6, the fluid - specific suction nozzle self - standing bag packaging machine further includes a liquid - discharging assembly 13. The liquid - discharging assembly 13 includes a movable linear module and a pipeline. The linear module drives the pipeline to move. During liquid discharging, it moves to the position below the outlet of the liquid - injection nozzle 30 of the liquid - injection assembly 11, and when not discharging liquid, it moves to a position that does not interfere with the power assembly's conveyance of the self - standing bag 12. In other embodiments, in order to collect and discharge the spilled liquid medicine during filling, an inverted - conical collecting tray is provided at a position below the liquid - injection assembly 11 that does not interfere with the power assembly's conveyance of the self - standing bag 12. A valve is provided below the collecting tray. When the liquid - discharging assembly 13 discharges liquid, it moves to the position below the collecting tray, and when not discharging liquid, it moves to a position that does not interfere with the power assembly's conveyance of the self - standing bag 12.

[0065] The power assembly 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 assembly 8, the filling assembly 10, the liquid - injection assembly 11, the lower - cover assembly 14 and the capping assembly 15. The intermittent rotation mechanism 16 of the power assembly intermittently stops, so that the self - standing bag 12 can accurately stay under the predetermined working station to complete related operations.

[0066] There are various implementation methods for driving the first lifting device 33, the second lifting device 25 and the linear module of the liquid - discharging assembly 13, such as pneumatic, hydraulic or electric. Whichever method is used should be included in the present invention.

[0067] Specifically, the intermittent rotation mechanism of the power assembly can be implemented by a connecting - rod mechanism, an indexing cam mechanism (cam divider), a Geneva mechanism, an incomplete - gear mechanism or a pin - wheel mechanism, etc.

[0068] The liquid medicine fluid is prepared in the pot body 1 and enters the liquid - injection assembly 11 through the liquid - supply pipeline. On the other hand, the self - standing bag 12 is manually loaded into the bag - feeding assembly 8, and the bag - feeding assembly 8 can successively send the self - standing bag 12 to the bag clip 18. The power assembly transports the self - standing bag 12 above the bag clip 18 to the position below the filling assembly 10, and fills gas or a substance different from that filled by the liquid - injection assembly 11 as required. The power assembly continues to transport the self - standing bag 12 to the position below the liquid - injection assembly 11. After the liquid - injection assembly 11 completes the liquid injection of the liquid medicine fluid, the power assembly continues to transport the self - standing bag 12. When passing through the lower - cover assembly 14, the capping spit out by the lower - cover assembly 14 is buckled at the bag mouth of the self - standing bag 12. The power assembly continues to transport the self - standing bag 12 to the position below the capping assembly 15, and the capping assembly 15 tightens the capping. After the capping is completed, the self - standing bag 12 slides out from the slide plate 7.

[0069] The mechanism of the present invention is stable and reliable. The original centralized process is split into processes with independent workstations, and there is no interference between them. Moreover, monitoring can be added to each workstation. In case of any malfunction in any process, the machine can be stopped for maintenance to avoid accidents such as continuous spilling of the liquid medicine. The filling and packaging are carried out according to the workstations. The filling stop is sensitive and reliable, it can automatically drain the liquid, and can meet the need of filling different substances successively. The bag feeding is accurate and simple. The step of making bags on the spot during liquid medicine filling is cancelled, and finished prefabricated self-standing bags are used for filling. On the one hand, this reduces the occurrence of accidents and malfunctions in the bag-making process. On the other hand, after the self-standing bag is filled, it can stand on the table, and the package can be opened by unscrewing the cap when drinking, which improves the packaging grade of the packaged product, and is more convenient and hygienic.

[0070] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. 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 can make some changes or modifications to the above-mentioned technical content to form equivalent embodiments within the scope of the technical solution of the present invention. 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 stand-up bag packaging machine with a nozzle for fluids, characterized in that: It includes power assembly, bag delivery assembly, liquid injection assembly, lower cover assembly and cap screwing assembly. The power component transports the self-supporting bags sent out from the bag delivery component to the bottom of the liquid injection component one by one for filling, and then transports them to the lower cover component to buckle the screw cap, and then transports them to the screw cap component to tighten the screw cap.

2. The stand-up pouch packaging machine with a nozzle for fluid according to claim 1, characterized in that: It also includes a perfusion component, which is located in front of the liquid injection component and is used to inject gas or a substance different from that injected by the liquid injection component as needed.

3. The stand-up pouch packaging machine with a nozzle for fluid according to claim 2, characterized in that: The bag delivery component includes a bag storage rack and a bag lifting and shifting device. The bag storage rack comprises a vertical part and a curved part connected to the lower end thereof. The bag storage rack is provided with a bag delivery notch which passes through the upper and lower parts. 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.

4. The stand-up pouch packaging machine with a nozzle for fluid according to claim 3, characterized in that: The lifting and shifting bag 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, and 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 stand-up pouch packaging machine with a nozzle for fluids according to claim 4, characterized in that: The side of the shift fork pointing to the bag delivery notch of the bag storage rack is wedge-shaped.

6. A fluid-specific nozzle stand-up bag packaging machine according to any one of claims 1 to 5, characterized in that: The liquid injection assembly includes a second lifting device, a liquid injection nozzle, and a blocking rod. The liquid injection nozzle is installed on the second lifting device. After the liquid injection nozzle is lowered to a set height along with the second lifting device, the blocking rod is separated from the liquid inlet channel of the liquid injection nozzle. After the liquid injection nozzle is raised to a set height along with the second lifting device, the blocking rod blocks the liquid inlet channel of the liquid injection nozzle.

7. The stand-up pouch packaging machine with a nozzle for fluid according to claim 6, characterized in that: It also includes a frame, and the injection assembly also includes a guide rod, a spring, and a limit frame. The limit frame and the second lifting device are connected to the frame, the upper part of the guide rod is fixed on the second lifting device, the lower part of the guide rod is sleeved in the axial hole of the upper part of the blocking rod and the two can move relative to each other, the compression spring is sleeved outside the guide rod and the lower end of the compression spring is against the upper end of the blocking rod, the limit frame can limit the downward position of the blocking rod, and the blocking rod is located above the liquid inlet at the upper end of the injection nozzle.

8. The stand-up pouch packaging machine with a nozzle for fluids according to claim 7, characterized in that: The blocking rod is a stepped rod with an outwardly protruding step on its upper portion. The limit frame achieves downward limiting of the blocking rod by supporting the step. After limiting, the injection nozzle descends along with the second lifting device, and the blocking rod is separated from the liquid inlet of the injection nozzle.

9. The stand-up pouch packaging machine with a nozzle for fluids according to claim 8, characterized in that: The lower cover assembly includes a material discharge guide rail, spring sheets are arranged on the left and right sides of the material discharge guide rail outlet, and an elastic pressure plate is arranged on the upper part. Along the outlet direction, the left and right spring sheets and the upper pressure plate exceed the bottom feed guide rail, the upper pressure plate exceeds the left and right spring sheets, the upper pressure plate is obliquely close to the tops of the left and right spring sheets, the left and right spring sheets are relatively close and the minimum spacing is smaller than the outer diameter of the screw cap, and the length of the minimum spacing position of the left and right spring sheets and the bottom feed guide rail along the outlet direction is smaller than the screw cap radius.

10. The stand-up pouch packaging machine with a nozzle for fluid according to claim 8, characterized in that: It also includes a discharge component, which includes a movable linear module and a pipeline. The linear module drives the pipeline to move, and moves to below the injection nozzle outlet of the injection component when discharging liquid, and moves to a position that does not hinder the power component from transporting the self-supporting bag when not discharging liquid.

Images