A soft bag filling system and method

Abstract

The application discloses a soft bag filling system and method, the system comprises a conveying mechanism and a soft bag carrier, a filling station, an inflation station and a sealing station which moves synchronously with the inflation station are sequentially arranged along the conveying mechanism, the inflation station comprises an inflation mechanism, a first sealing mechanism and a bag opening mechanism, the bag opening mechanism is used for opening the soft bag, the inflation mechanism is used for inflating the soft bag, the first sealing mechanism is arranged on both sides of the soft bag and is used for sealing the inflated soft bag, and the sealing station is provided with a second sealing mechanism which is used for sealing the soft bag from both sides; the method comprises the following steps: the soft bag is filled in the filling station, and the filled soft bag enters the inflation station; the soft bag is opened from both sides by the bag opening mechanism, inflated by the inflation mechanism and sealed by the first sealing mechanism; the second sealing mechanism is further used for sealing; steps two and three are synchronous and used for inflating and sealing different soft bags; and the application effectively improves the efficiency of the filling system and has a relatively simple structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a soft bag filling system and method. BACKGROUND

[0002] The powder-liquid double-chamber bag large infusion product is an injection product containing infusion and sterile powder made of non-PVC infusion special film material. It is convenient and fast to use in clinical practice, and the medication is safe and reliable. It is currently recognized as the safest and most reliable large infusion product in the world.

[0003] At present, for the sterile powder product that needs inert gas protection, the powder chamber needs to be filled with inert gas (usually nitrogen). For example, a double-chamber bag powder chamber filling and sealing system with patent number CN201922263221.9 is to move the nitrogen filling needle to the inside of the soft bag to fill gas, then press the cut of the soft bag in the filling process through the first pressing head, the nitrogen filling needle returns to the original position, and the second pressing head on the first pressing head is further heat-pressed. When the second pressing head is heat-pressed, the position where the nitrogen filling needle passes through is heat-pressed, which is a circular shape. Incomplete sealing may occur during heat pressing, resulting in low product qualification rate. At the same time, the first pressing head and the second pressing head are arranged vertically and cannot work simultaneously, so the working efficiency is relatively low. In addition, there are mechanisms that use the same process for filling and sealing. Although it can meet the residual oxygen demand, the mechanism design is complex and difficult to manufacture and debug. Since the filling and welding are designed and installed in the same process, the production time is relatively long, resulting in low overall production capacity of the production line, which cannot meet the large-scale automated production requirements. SUMMARY

[0004] The purpose of the present application is to provide a soft bag filling system and method, which solves the problem of relatively low working efficiency of the existing inert gas protection filling system.

[0005] The present application is implemented as follows: a soft bag filling system, comprising a conveying mechanism and a plurality of soft bag carriers arranged on the conveying mechanism, a filling station, an inflation station and a sealing station are arranged in sequence along the conveying mechanism, the mechanism on the inflation station and the mechanism on the sealing station can process different soft bags at the same time, the inflation station comprises an inflation mechanism, a first sealing mechanism and an opening mechanism, the opening mechanism is used to open the soft bag on the inflation station, the inflation mechanism is used to inflate the opened soft bag, and the first sealing mechanism is arranged on both sides of the soft bag to seal the inflated soft bag, and the sealing station is provided with a second sealing mechanism for sealing the soft bag from both sides.

[0006] In the application, after the bag opening mechanism in the inflation station opens the bag, the inflation mechanism inflates, and the first sealing mechanism seals the inflated soft bag. Through the preliminary sealing of the first sealing mechanism, the time consumption is small, and the air is prevented from entering during the conveying of the soft bag from the inflation mechanism to the sealing mechanism. The soft bag sealed by the first sealing mechanism enters the second sealing mechanism for sealing. The sealing strength of the second sealing mechanism is greater than that of the first sealing mechanism, so the action time of the second sealing mechanism is longer. Therefore, in the application, the soft bag carrier is synchronously conveyed by the conveying mechanism, and the mechanism in the inflation station starts to process the next soft bag while the second sealing mechanism is acting, so as to avoid the long time consumption of the second sealing mechanism affecting the working efficiency of the filling system, and the overall production capacity of the production line is high, meeting the production requirements of large-scale automation. In addition, the inflation station and the sealing station are located in different stations, and the structure design is relatively simple and convenient to debug.

[0007] A further technical solution of the application is that the first sealing mechanism comprises a first drive and a first sealing die, and the first sealing die is arranged on both sides of the soft bag and moves relatively by the first drive.

[0008] The first drive drives the first sealing die to move relatively, welds both sides of the soft bag, and realizes sealing. After the first sealing mechanism completes weak welding, the first drive is used to return the first sealing die to the original position to avoid interference with other mechanisms.

[0009] A further technical solution of the application is that the bag opening mechanism comprises a bag opening drive and a suction cup, and the suction cup is arranged on both sides of the soft bag and moves relatively by the bag opening drive.

[0010] The output end of the bag opening drive is connected with the suction cup to drive the suction cup to move close to each other and open the bag on both sides of the soft bag. After the bag opening mechanism completes the bag opening, the bag opening drive is used to return the suction cup to the original position to avoid interference with other mechanisms.

[0011] A further technical solution of the application is that the second sealing mechanism comprises a second drive and a second sealing die, and the second sealing die is arranged on both sides of the soft bag and moves relatively by the second drive.

[0012] The output end of the second drive is connected with the second sealing die to drive the second sealing die to move close to each other and weld both sides of the soft bag. After the second sealing mechanism completes strong welding, the second drive is used to return the second sealing die to the original position to avoid interference with other mechanisms.

[0013] A further technical solution of the application is that the first sealing mechanism and the bag opening mechanism are arranged above and below and can be lifted.

[0014] The first sealing mechanism and the bag opening mechanism are arranged above and below, occupy small space, and the lifting of the bag opening mechanism drives the lifting of the first sealing mechanism, realizes the displacement of the bag opening mechanism to the first sealing mechanism, and avoids interference.

[0015] The further technical scheme of the present application is that the inflating mechanism comprises an inflating needle and a liftable needle holder.

[0016] The inflating needle is installed on the needle holder and is lifted in and out of the soft bag by the needle holder to inflate and avoid.

[0017] The further technical scheme of the present application is that the filling station, the inflating station and / or the sealing station are provided with protective covers.

[0018] The present application also provides a filling method of the soft bag, which is based on the filling system, and the method comprises the following steps:

[0019] Step one, the filling station fills the soft bag, and the filled soft bag enters the inflating station through the conveying mechanism;

[0020] Step two, the soft bag entering the inflating station is opened from both sides by the bag opening mechanism, the inflating mechanism inflates the opened soft bag, and the first sealing mechanism seals the inflated soft bag;

[0021] Step three, the conveying mechanism conveys the sealed soft bag to the sealing station, and the second sealing mechanism in the sealing station further seals the soft bag from both sides;

[0022] The step two and the step three inflate and seal different soft bags synchronously.

[0023] The further technical scheme of the present application is that in the step two, the bag opening mechanism closes the bag after the inflating mechanism leaves the soft bag.

[0024] When the inflating mechanism inflates the soft bag, in order to avoid that the powder in the soft bag is adsorbed on the inflating mechanism during the inflating process, the bag is closed by the bag opening mechanism after the inflating is completed, and the action of the inflating mechanism leaving the soft bag and the bag opening mechanism approaching the soft bag to prepare for closing the bag is simultaneously performed, so that the efficiency is high; in order to avoid that the inert gas runs out after the inflating mechanism inflates the soft bag, the inflating needle in the inflating mechanism is used to close the bag after the inflating needle leaves the soft bag.

[0025] The further technical scheme of the present application is that the first sealing mechanism seals after the bag opening mechanism closes the bag.

[0026] After the inflating needle in the inflating mechanism leaves the soft bag, the bag opening mechanism closes the bag, and the first sealing mechanism seals the soft bag, in this process, the sealing part of the first sealing mechanism does not have the insertion port of the inflating needle, and when the second sealing mechanism seals, the situation that the sealing is not in place is avoided.

[0027] The beneficial effects of the present application: in the present application, after the bag opening mechanism in the inflation station opens the bag, the inflation mechanism inflates, and the first sealing mechanism seals the inflated soft bag. The sealing of the first sealing mechanism only needs preliminary sealing, which consumes less time and can preliminarily seal the soft bag to avoid air entering during the operation process; the soft bag sealed by the first sealing mechanism enters the second sealing mechanism for sealing, and the sealing strength of the second sealing mechanism is greater than that of the first sealing mechanism, which causes the operation of the second sealing mechanism to consume more time. Therefore, in the present application, the soft bag carrier is synchronously conveyed by the conveying mechanism, and the mechanism in the inflation station starts to process the next soft bag while the second sealing mechanism is operating, thereby avoiding the long time consumption of the second sealing mechanism affecting the working efficiency of the filling system, the overall production capacity of the production line is high, and the large-scale automatic production requirements are met; in addition, the inflation station and the sealing station are in different stations, the structure design is relatively simple, and the debugging is also convenient. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a process flow chart of a soft bag filling and sealing machine provided by the present application;

[0029] Figure 2 is a working state change diagram of a soft bag filling system provided by the present application;

[0030] Figure 3 is a working state change diagram of an inflation station provided by the present application;

[0031] Figure 4 is a working state change diagram of a sealing station provided by the present application;

[0032] Figure 5 is a change diagram of a soft bag passing through a filling system provided by the present application.

[0033] Fig. 1. filling station, 2. inflation station, 3. sealing station, 21. inflation mechanism, 22. first sealing mechanism, 221. first drive, 222. first sealing mold, 23. bag opening mechanism, 231. bag opening drive, 232. suction cup, 31. second sealing mechanism, 311. second drive, 312. second sealing mold, 4. conveying mechanism, 5. rear weighing station, 6. bag outlet station, 7. front weighing station, 8. cutting station, 9. flushing station, 10. bag feeding station, 11. lifting drive, 12. first sealing position, 13. second sealing position. DETAILED DESCRIPTION

[0034] Following, the advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. The present application can also be implemented or applied by other different specific embodiments, and the details in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0035] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the present specification for understanding and reading by those skilled in the art, and do not have technical significance for defining the limitations of the present application. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technology disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship without substantially changing the technical content is also considered as the scope of the present application.

[0036] Example one:

[0037] Figures 1-5 A filling system of soft bags is shown, including a conveying mechanism 4 and a plurality of soft bag carriers arranged on the conveying mechanism, a filling station 1, an inflation station 2 and a sealing station 3 are arranged in sequence along the conveying mechanism 4, the mechanism on the inflation station 2 and the mechanism on the sealing station 3 can simultaneously process different soft bags, the inflation station 2 includes an inflation mechanism 21, a first sealing mechanism 22 and an opening bag mechanism 23, the opening bag mechanism 23 is used to open the soft bags on the inflation station 2, the inflation mechanism 21 is used to inflate the opened soft bags, the first sealing mechanism 22 is arranged on both sides of the soft bags to seal the inflated soft bags, the sealing station 3 is provided with a second sealing mechanism 31 for sealing the soft bags from both sides.

[0038] In the present application, after the bag opening mechanism in the inflation station opens the bag, the inflation mechanism inflates, and the first sealing mechanism seals the inflated soft bag. The sealing of the first sealing mechanism only needs to be preliminary sealing, which consumes less time and can preliminarily seal the soft bag to avoid air entering during the operation process. The soft bag sealed by the first sealing mechanism enters the second sealing mechanism for sealing. The sealing strength of the second sealing mechanism is greater than that of the first sealing mechanism, which causes the operation of the second sealing mechanism to consume more time. Therefore, in the present application, the soft bag carrier is synchronously conveyed by the conveying mechanism, and the mechanism in the inflation station starts to process the next soft bag while the second sealing mechanism is operating, thereby avoiding the long time consumption of the second sealing mechanism affecting the working efficiency of the filling system, the overall production capacity of the production line is high, and the large-scale automatic production requirements are met. In addition, the inflation station and the sealing station are in different stations, the structure design is relatively simple, and the debugging is also convenient.

[0039] In the present embodiment, the conveying mechanism is a synchronous belt, and a plurality of soft bag carriers move synchronously on the synchronous belt.

[0040] In the present embodiment, the first sealing mechanism 22 includes a first drive 221 and a first sealing die 222. The first sealing die 222 is arranged on both sides of the soft bag and moves relatively by the first drive 221.

[0041] The first drive drives the first sealing die to move relatively to weld the two sides of the soft bag, thereby achieving sealing. After the first sealing mechanism completes the weak welding, the first drive is used to return the first sealing die to its original position to avoid other mechanisms.

[0042] In the present embodiment, the first drive is a pneumatic cylinder or a motor.

[0043] In the present embodiment, the bag opening mechanism 23 includes a bag opening drive 231 and a suction cup 232. The suction cup 232 is arranged on both sides of the soft bag and moves relatively by the bag opening drive 231.

[0044] The output end of the bag opening drive is connected with the suction cup to drive the suction cup to move close to each other to open the bag on both sides of the soft bag. After the bag opening mechanism completes the bag opening, the bag opening drive is used to return the suction cup to its original position to avoid other mechanisms.

[0045] In the present embodiment, the bag opening drive is a pneumatic cylinder or a motor.

[0046] In the present embodiment, the second sealing mechanism 31 includes a second drive 311 and a second sealing die 312. The second sealing die 312 is arranged on both sides of the soft bag and moves relatively by the second drive 311.

[0047] The output end of the second drive is connected with the second sealing die for driving the second sealing die to approach each other, and the two sides of the soft bag are welded. After the second sealing mechanism completes the strong welding, the second sealing die is returned to the original position by the second drive to avoid interference with other mechanisms.

[0048] In the embodiment, the second drive is a cylinder or a motor.

[0049] In the embodiment, the first sealing mechanism 22 and the bag opening mechanism 23 are arranged in an up-down manner and can be lifted.

[0050] The first sealing mechanism and the bag opening mechanism are arranged in an up-down manner, have small space occupation, and are lifted simultaneously by the lifting of the bag opening mechanism, so that the bag opening mechanism can give way to the first sealing mechanism and avoid interference.

[0051] In the embodiment, the filling system further comprises a lifting drive, and the output end of the lifting drive is provided with a connecting plate, and the first sealing mechanism and the bag opening mechanism are mounted on the connecting plate and arranged in an up-down manner.

[0052] In the embodiment, the inflation mechanism 21 comprises an inflation needle 211 and a liftable needle holder 212.

[0053] The inflation needle is mounted on the needle holder and is lifted in and out of the soft bag for inflation and avoidance.

[0054] In the embodiment, the inflation mechanism is arranged above the soft bag, the inflation needle is in the same straight line with the opening of the soft bag, and the inflation needle can smoothly enter the soft bag for inflation.

[0055] The inflation mechanism comprises but is not limited to devices such as a sterile filter, a pneumatic diaphragm valve, a pressure regulating valve, a pressure sensor, and a flow sensor, can control the opening and closing of the gas, and can manually or automatically adjust and monitor the pressure and flow of the gas, so as to ensure that the powder in the bag does not fly, and the filled gas meets the quality requirements such as residual oxygen content index.

[0056] In the embodiment, the welding surface of the first sealing die is less than or equal to the welding surface of the second sealing die. The welding time of the first sealing mechanism can be effectively reduced, and the powder and air in and out of the soft bag from the inflation station to the sealing station can be avoided.

[0057] As another embodiment, the welding surface of the first sealing die is equal to half of the welding surface of the second sealing die, and the welding surface of the second sealing die is arranged above the welding surface of the first sealing die. The powder is avoided from being carried by the welding surface of the second sealing die.

[0058] As another embodiment, a protective cover is arranged on the filling station 1, the inflation station 2, and / or the sealing station 3.

[0059] Embodiment two:

[0060] A soft bag filling method based on the filling system of embodiment one, the method comprising the following steps:

[0061] Step one, the filling station 1 fills the soft bag, and the filled soft bag enters the inflation station 2 through the conveying mechanism 4;

[0062] Step two, the soft bag entering the inflation station 2 is opened from both sides by the bag opening mechanism 23, the inflated mechanism 21 inflates the opened soft bag, and the first sealing mechanism 22 seals the inflated soft bag;

[0063] Step three, the conveying mechanism 4 conveys the sealed soft bag to the sealing station 3, and the second sealing mechanism 31 in the sealing station 3 further seals the soft bag from both sides;

[0064] Wherein, step two and step three inflate and seal different soft bags synchronously.

[0065] The filling system in the application is suitable for different soft bag carriers.

[0066] As other embodiments, the first sealing mechanism can also be provided with a vacuum function.

[0067] In this embodiment, the application inflates the protective gas, which is a sterile and clean dry gas, and can be all inert gases that can protect the powder, such as nitrogen, helium, etc.

[0068] In this embodiment, the filling mechanism of the filling station can be a sterile powder filling form such as screw type filling, airflow cannula type filling, airflow rotating wheel type filling, etc.

[0069] The patent technology of the application is suitable for powder-liquid double-chamber bags filled at the tail, and is also suitable for other products such as single-chamber bags, multi-chamber bags, etc. filled at the tail, shoulder, and side.

[0070] In this embodiment, in step two, the bag opening mechanism 23 closes the bag after the inflation mechanism 21 leaves the soft bag.

[0071] When the inflation mechanism inflates the soft bag, in order to avoid the powder in the soft bag from being adsorbed on the inflation mechanism during the inflation process, the bag is closed by the bag opening mechanism after the inflation is completed; at the same time, in order to avoid the inert gas from running out after the inflation mechanism inflates the soft bag, the inflation needle in the inflation mechanism is used to close the bag after it comes out of the soft bag. The first sealing mechanism and the bag opening mechanism move simultaneously, and after the bag opening mechanism completes the avoidance, the first sealing mechanism is in place, and the first sealing mechanism seals the soft bag.

[0072] In the embodiment, the first sealing mechanism 22 seals the bag after the opening and closing mechanism closes the bag.

[0073] After the inflation needle in the inflation mechanism comes out of the soft bag, the opening and closing mechanism closes the bag, and the first sealing mechanism seals the soft bag, in the process, the first sealing mechanism does not have an insertion opening of the inflation needle at the sealing position, and when the second sealing mechanism seals, the sealing is not in place.

[0074] Figure 1 The production process includes but is not limited to: the soft bag sent by the previous process is loaded onto the conveying carrier through the bag loading station 10, the conveying mechanism sequentially conveys the soft bag to the washing station 9, completes the cleaning work of the bag body and the conveying carrier, and then conveys to the cutting station 8 to cut the tail of the powder chamber of the closed soft bag, conveys to the front weighing station 7 to weigh the bag body, and then conveys to the powder filling station to fill the sterile powder, then conveys to the inflation station, conveys to the sealing station to complete the welding and closure of the bag opening, and finally conveys the filled and sealed soft bag to the rear weighing station 5, the system compares and analyzes the front and rear weighing, automatically removes the unqualified products and associates them to the filling process for corresponding control, and the qualified products are put into the conveying line through the bag outlet station 6 to the subsequent process equipment.

[0075] The working principle of the application is as follows: Figure 2 As shown in the figure, the conveying mechanism drives the soft bag product on the conveying carrier to complete the sterile powder filling through the filling station, and then the soft bag is conveyed to the inflation station; further, the opening and closing mechanism on both sides of the soft bag synchronously drives the suction cups on both sides to open the opening of the soft bag; the inflation station drives the inflation system downward, the inflation needle enters the powder chamber of the soft bag, and the inflation is completed; the inflation system includes but is not limited to a sterile filter, a pneumatic diaphragm valve, a pressure regulating valve, a pressure sensor, a flow sensor and the like, can control the opening and closing of the gas, and can manually or automatically adjust and monitor the pressure and flow of the gas, to ensure that the gas filled into the bag can prevent the powder from flying, and at the same time, the filled gas can meet the quality requirements such as residual oxygen content index; after the inflation is completed, the inflation mechanism drives the inflation system and the inflation needle to return to the original position upward, at the same time, the opening and closing mechanism on both sides drives the suction cups to close the tail of the opened soft bag through relative movement, and then drives the suction cups to return to the initial position through relative movement; further, the lifting drive drives the first sealing mechanism and the opening and closing mechanism on both sides of the soft bag downward, after the first sealing mechanism is in place, the first drive on both sides drives the first sealing mold to approach each other, to quickly weakly weld the opening of the tail of the soft bag, to ensure that the filled gas is quickly saved in the bag and cannot overflow. Then, the first drive drives the first sealing mold to return to the initial position, the lifting drive moves upward, drives the first sealing mechanism and the inflation mechanism to return to the initial position, and completes the inflation and pre-welding action.

[0076] Further, the soft bag which has completed the inflation and the weak welding is transferred to a sealing station. The sealing station drives the second sealing die arranged on both sides of the soft bag to forwardly seal the tail weak welding part of the soft bag, so as to ensure the sealing welding performance requirement of the final sealing. Then, the second sealing mechanism drives the second sealing die to return to the original position, and the sealing action of the soft bag is completed.

[0077] The above merely provides the preferred embodiments of the present application, but is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall fall within the protection scope of the present application.

Claims

1. A filling system for soft bags, comprising a conveying mechanism (4) and a plurality of soft bag carriers arranged on the conveying mechanism, characterized in that A filling station (1), an inflation station (2) and a sealing station (3) are sequentially arranged along the conveying mechanism (4), mechanisms on the inflation station (2) and the sealing station (3) can simultaneously process different soft bags, the inflation station (2) comprises an inflation mechanism (21), a first sealing mechanism (22) and a bag opening mechanism (23), the bag opening mechanism (23) is used for opening the soft bag on the inflation station (2), the inflation mechanism (21) is used for inflating the opened soft bag, and the first sealing mechanism (22) is arranged on both sides of the soft bag and used for sealing the inflated soft bag, and the sealing station (3) is provided with a second sealing mechanism (31) used for sealing the soft bag from both sides.

2. A soft bag filling system according to claim 1, wherein, The first sealing mechanism (22) comprises a first drive (221) and a first sealing die (222), and the first sealing die (222) is arranged on both sides of the soft bag and moves relatively by the first drive (221).

3. A soft bag filling system according to claim 1, wherein, The bag opening mechanism (23) comprises a bag opening drive (231) and a suction cup (232), and the suction cup (232) is arranged on both sides of the soft bag and moves relatively by the bag opening drive (231).

4. A soft bag filling system according to any one of claims 1-3, wherein, The second sealing mechanism (31) comprises a second drive (311) and a second sealing die (312), and the second sealing die (312) is arranged on both sides of the soft bag and moves relatively by the second drive (311).

5. A soft bag filling system according to any one of claims 1-3, wherein, The first sealing mechanism (22) and the bag opening mechanism (23) are arranged above and below and can be lifted.

6. A soft bag filling system according to any one of claims 1-3, wherein, The inflation mechanism (21) comprises an inflation needle (211) and a liftable needle holder (212).

7. A soft bag filling system according to any one of claims 1-3, wherein, The filling station (1), the inflation station (2) or / and the sealing station (3) are provided with a protective cover.

8. A method of filling a soft bag, characterized by, The filling method is based on the filling system in any one of claims 1-7, and the method comprises the following steps: Step one, the filling station (1) fills the soft bag, and the filled soft bag enters the inflation station (2) through the conveying mechanism (4); Step two, the soft bag entering the inflation station (2) is opened from both sides by the bag opening mechanism (23), the inflated soft bag is inflated by the inflation mechanism (21), and the inflated soft bag is sealed by the first sealing mechanism (22); Step three, the conveying mechanism (4) conveys the sealed soft bag to the sealing station (3), and the second sealing mechanism (31) in the sealing station (3) further seals the soft bag from both sides; Wherein, steps two and three simultaneously inflate and seal different soft bags.

9. A method of filling a soft bag according to claim 8, wherein In step two, the bag opening mechanism (23) closes the bag after the inflation mechanism (21) leaves the soft bag.

10. A method of filling a soft bag according to claim 9, wherein The first sealing mechanism (22) seals after the bag opening mechanism (23) closes the bag.

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