Automatic continuous sterile bag filling machine

By designing an automatic continuous sterile bag filling machine, the filling problem that requires manual assistance in the existing technology is solved, and the full process automation is achieved, production efficiency and sterility are improved, and labor costs and infection risks are reduced.

CN222973736UActive Publication Date: 2025-06-13SHANGHAI CHENGHUAN LIGHT IND MASCH CO LTD +1
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Patent Information

Application Number
CN202422072638.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-26
Publication Date
2025-06-13
Estimated Expiration
2034-08-26

AI Technical Summary

Technical Problem

The existing sterile bag material filling process requires manual assistance, which poses a risk of infection, and has high labor costs, which affects production efficiency.

Method used

An automatic continuous sterile bag filling machine is designed, including filling head assembly, push assembly, filling valve assembly, bag inlet end roller assembly, steam assembly, rack, CIP/SIP condensation circulation assembly, filling head sealing and lift assembly and bag cutting assembly, to realize the filling and bag cutting process without manual operation throughout the entire process.

Benefits of technology

Through automated processes, production efficiency is improved, labor costs are reduced, infection risks are reduced, and sterility of the filling process is ensured.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an automatic continuous sterile bag filling machine which comprises a filling head assembly, a pushing assembly, a filling valve assembly, a bag inlet end roller assembly, a steam assembly, a rack, a CIP / SIP condensation circulation assembly, a filling head sealing jacking assembly and a bag cutting assembly. The right end of the middle of the rack is connected with the bag inlet end roller assembly, the pushing assembly is arranged at the upper end of the bag inlet end roller assembly, the filling head assembly is arranged at the left end of the pushing assembly and connected with the rack, and the bag cutting assembly is arranged at the left end of the filling head assembly and connected with the rack. The top of the rack is connected with the filling valve assembly, and the filling valve assembly communicates with the filling head assembly. The automatic continuous sterile bag filling machine aims at overcoming the existing defects, the production efficiency is improved, and the labor cost is reduced.
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Description

Technical Field

[0001] The utility model relates to an automatic continuous aseptic bag filling machine. Background Art

[0002] An aseptic bag is a high-tech new packaging material made from polyethylene particles through processes such as blown film, cutting, heat sealing, vacuum packaging, and sterilization in a clean environment.

[0003] Due to its aseptic, non-toxic, excellent low-temperature resistance, good chemical stability, electrical insulation and other properties, the aseptic bag is widely used in the transportation and temporary storage of aseptic solid active pharmaceutical ingredients, aseptic pharmaceutical excipients, aseptic preparations and other products, as well as the transfer packaging of aseptic rubber stoppers from cleaning to the filling line.

[0004] During the filling process of existing aseptic bags, mechanical filling is used to achieve aseptic purposes, which is convenient for overall sterilization. However, the existing machinery cannot achieve fully unmanned operation during filling. Manual assistance is required during the connection of two steps, and there is a risk of material infection. For multiple production lines, multiple people are needed for assistance, resulting in high labor costs and slow manual operation, which affects the overall production efficiency. Therefore, an automatic continuous aseptic bag filling machine is proposed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic continuous aseptic bag filling machine to overcome the existing defects, improve production efficiency and reduce labor costs.

[0006] The technical solution to achieve the above purpose is: an automatic continuous aseptic bag filling machine, including a filling head assembly, a pushing assembly, a filling valve assembly, an inlet bag end roller assembly, a steam assembly, a frame, a CIP / SIP (Clean In Place / Sterilize In Place) condensation circulation assembly, a filling head sealing and lifting assembly, and a bag cutting assembly;

[0007] The right end of the middle part of the frame is connected to the inlet bag end roller assembly. The pushing assembly is arranged above the inlet bag end roller assembly. The left end of the pushing assembly is provided with the filling head assembly, which is connected to the frame. The left end of the filling head assembly is provided with the bag cutting assembly, which is connected to the frame. The filling valve assembly is connected to the top of the frame and communicates with the filling head assembly. The frame is provided with a steam assembly, which communicates with the filling head assembly. The filling head sealing and lifting assembly is arranged below the filling head assembly. The CIP / SIP (Clean In Place / Sterilize In Place) condensation circulation assembly is connected to the filling head assembly through the filling head sealing and lifting assembly.

[0008] Preferably, the bag-feeding end roller assembly includes a roller frame, on which a plurality of first power-off rollers are rotatably connected, and a second power-off roller is rotatably connected to the right end of the roller frame. A centering plate is connected to one of the first power-off rollers close to the second power-off roller.

[0009] Preferably, the pushing assembly includes a driving assembly, a push rod assembly, a slide rail assembly, a detection assembly, and a sterilization assembly. The upper end of the push rod assembly is connected to the driving assembly, the slide rail assembly is located below the push rod assembly, the detection assembly is connected to the driving assembly, and the sterilization assembly is connected to the left end of the driving assembly.

[0010] Preferably, the driving assembly includes a synchronous belt linear module, which is connected to the machine frame through two fixed brackets and is located above the bag-feeding end roller assembly. One end of the synchronous belt linear module is connected to a servo motor.

[0011] Preferably, the push rod assembly includes a first fixing plate, the upper end of which is connected to the moving block of the synchronous belt linear module, the lower end of the first fixing plate is rotatably connected to a push rod through a pin shaft, and the lower end of the push rod is connected to a bayonet part.

[0012] Preferably, the slide rail assembly includes two slide rails, and the two slide rails are respectively connected to the synchronous belt linear module through a plurality of first connecting plates. The two slide rails are located above the bag-feeding end roller assembly.

[0013] Preferably, the detection assembly includes a first detection switch, a second detection switch, a third detection switch, a first photoelectric switch, and a second photoelectric switch. The first detection switch and the third detection switch are respectively arranged at the left and right ends of the synchronous belt linear module, and the second detection switch is arranged in the middle of the synchronous belt linear module. A second connecting plate is connected to each of the left end and the middle part of the synchronous belt linear module, and the lower ends of the two second connecting plates are respectively connected to the first photoelectric switch and the second photoelectric switch.

[0014] Preferably, the sterilization assembly is provided in two groups on the front and back sides of the left end of the synchronous belt linear module. The sterilization assembly includes a pushing cylinder and a steam spray cover. The pushing cylinder is connected to the synchronous belt linear module, the output end of the pushing cylinder is connected to the steam spray cover, and the steam spray cover is communicated with the steam assembly.

[0015] Preferably, the filling head assembly includes a filling chamber, a cap-pulling and pressing assembly, a filling assembly, a material pipe, a steam inlet for the filling chamber, and a steam outlet for the filling chamber; the cap-pulling and pressing assembly and the filling assembly are both connected to the upper end face of the filling chamber, the lower end of the material pipe communicates with the upper end of the filling assembly and is connected to the filling valve assembly; the steam inlet for the filling chamber and the steam outlet for the filling chamber communicate with the steam assembly.

[0016] Preferably, the cap-pulling and pressing assembly includes a nozzle bag fixing plate, one end of the nozzle bag fixing plate is provided with an arc-shaped bayonet, and the other end is connected to a fixed rotating rod; the outer wall of the fixed rotating rod is rotatably connected to an outer shaft rod, a rotating groove is provided on the outer shaft rod, a limiting shaft is connected to the outer wall of the fixed rotating rod, and the limiting shaft is slidably connected in the rotating groove; the upper end of the outer shaft rod is connected to a connecting frame, the connecting frame is connected to the output end of a first driving cylinder, and the lower end of the outer shaft rod is connected to a cap-pulling and pressing module; the upper end of the fixed rotating rod is connected to a rocker arm, and the other end of the rocker arm is rotatably connected to the output end of a second driving cylinder.

[0017] Preferably, the filling assembly includes a third driving cylinder, a filling rod, a fourth driving cylinder, and a material chamber; the output end of the third driving cylinder is connected to the filling rod; the output end of the fourth driving cylinder is connected to the material chamber.

[0018] Preferably, a bag blocking plate is provided at the top of the filling chamber.

[0019] Preferably, the filling head sealing and lifting assembly includes a lifting cylinder, the upper end of the lifting cylinder is connected to a sealing plate, a conveying pipe is connected to the sealing plate, and the other end of the conveying pipe communicates with the CIP / SIP condensation circulation assembly.

[0020] Preferably, the cap-pulling and pressing module is located above the nozzle bag fixing plate.

[0021] The beneficial effects of the present utility model are as follows:

[0022] 1) In this automatic continuous aseptic bag filling machine, by setting a filling head assembly, a pushing assembly, a filling valve assembly, an inlet bag end roller assembly, a steam assembly, a machine frame, a CIP / SIP condensation circulation assembly, a filling head sealing and lifting assembly, and a bag cutting assembly; placing the aseptic bag on the inlet bag end roller assembly, the pushing assembly will push the aseptic bag into the filling head assembly for filling, and after filling, it enters the bag cutting assembly for cutting and separation and then enters the next process; the process does not require manual operation and is a full mechanical movement, which improves production efficiency and reduces labor costs.

[0023] 2) By setting a filling chamber, a cap-pulling and pressing assembly, a filling assembly, a material pipe, a steam inlet for the filling chamber, and a steam outlet for the filling chamber inside the filling head assembly, the filling head assembly integrates functions of cap-pulling, cap-pressing, filling, and in-chamber sterilization, improving production efficiency and ensuring a sterile effect inside the chamber. Brief Description of the Drawings

[0024] Figure 1 is a schematic diagram of the automatic continuous aseptic bag filling machine of the present utility model;

[0025] Figure 2 is a schematic diagram of the inlet bag end roller assembly of the present utility model;

[0026] Figure 3 is a schematic diagram of the pushing assembly of the present utility model;

[0027] Figure 4 is a side view of the pushing assembly of the present utility model;

[0028] Figure 5 is a schematic diagram of the push rod assembly of the present utility model;

[0029] Figure 6 is a schematic diagram of the bayonet part of the present utility model;

[0030] Figure 7 is a side view of the sterilization assembly of the present utility model;

[0031] Figure 8 is a schematic diagram of the steam spray cover of the present utility model;

[0032] Figure 9 is a schematic diagram of the filling head assembly of the present utility model;

[0033] Figure 10 is a cross-sectional view of the filling head assembly of the present utility model;

[0034] Figure 11 is a schematic diagram of the outer shaft rod of the present utility model;

[0035] Figure 12 is a schematic diagram of the filling head sealing and lifting assembly of the present utility model.

[0036] In the figure: 1. Filling head assembly; 11. Filling chamber; 12. Cap pulling and pressing assembly; 121. Pocket fixing plate; 122. Fixed rotating rod; 123. Outer shaft rod; 124. Rotating groove; 125. Limit shaft; 126. Connecting frame; 127. First driving cylinder; 128. Rocker arm; 129. Second driving cylinder; 1210. Cap pulling and pressing module; 13. Filling assembly; 131. Third driving cylinder; 132. Filling rod; 133. Fourth driving cylinder; 134. Material chamber; 14. Material pipe; 15. Steam inlet of filling chamber; 16. Steam outlet of filling chamber; 17. Bag blocking plate; 2. Pushing assembly; 21. Driving assembly; 211. Synchronous belt linear module; 212. Fixed bracket; 213. Servo motor; 22. Push rod assembly; 221. First fixing plate; 222. Pin shaft; 223. Push rod; 224. Bayonet part; 23. Slide rail assembly; 231. Slide rail; 232. First connecting plate; 24. Detection assembly; 241. First detection switch; 242. Second detection switch; 243. Third detection switch; 244. First photoelectric switch; 245. Second photoelectric switch; 25. Sterilization assembly; 251. Pushing cylinder; 252. Steam spraying cover; 4. Filling valve assembly; 5. Inlet bag end roller assembly; 51. Roller frame; 52. First idle roller; 53. Second idle roller; 54. Centering plate; 6. Steam assembly; 7. Machine frame; 8. CIP / SIP condensation circulation assembly; 9. Filling head sealing and lifting assembly; 91. Lifting cylinder; 92. Sealing plate; 93. Delivery pipe; 10. Bag cutting assembly. Detailed implementation mode

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] The present utility model will be further described below with reference to the accompanying drawings.

[0039] As Figures 1-12As shown in the figure, an automatic continuous aseptic bag filling machine includes a filling head assembly 1, a pushing assembly 2, a filling valve assembly 4, an inlet bag end roller assembly 5, a steam assembly 6, a frame 7, a CIP / SIP condensation circulation assembly 8, a filling head sealing and lifting assembly 9, and a bag cutting assembly 10; the right end of the middle part of the frame 7 is connected to the inlet bag end roller assembly 5, the pushing assembly 2 is arranged above the inlet bag end roller assembly 5, the left end of the pushing assembly 2 is provided with the filling head assembly 1, the filling head assembly 1 is connected to the frame 7, the left end of the filling head assembly 1 is provided with the bag cutting assembly 10, and the bag cutting assembly 10 is connected to the frame 7; the top of the frame 7 is connected to the filling valve assembly 4, and the filling valve assembly 4 is communicated with the filling head assembly 1; the frame 7 is provided with the steam assembly 6, and the steam assembly 6 is communicated with the filling head assembly 1; the filling head sealing and lifting assembly 9 is arranged below the filling head assembly 1, and the CIP / SIP condensation circulation assembly 8 is connected to the filling head assembly 1 through the filling head sealing and lifting assembly 9.

[0040] Specifically, place the aseptic bag on the inlet bag end roller assembly 5, the pushing assembly 2 will push the aseptic bag into the interior of the filling head assembly 1 for filling, and after filling, it enters the bag cutting assembly 10, where it is cut and separated and enters the next process; the process does not require manual operation, and the whole process is mechanical movement, improving production efficiency and reducing labor costs.

[0041] As Figure 2 shown in the figure, the inlet bag end roller assembly 5 includes a roller frame 51, on which a plurality of first non-powered rollers 52 are rotatably connected, and a second non-powered roller 53 is rotatably connected to the right end of the roller frame 51. A centering plate 54 is connected to one of the first non-powered rollers 52 close to the second non-powered roller 53.

[0042] The continuous aseptic bag is now wound around the second non-powered roller 53 and then docked into the centering plate 54. Since the centering plate 54 is installed in the middle, the aseptic bag just enters between the two slide rails 231.

[0043] As Figure 3 、 4 shown in the figure, the pushing assembly 2 includes a driving assembly 21, a push rod assembly 22, a slide rail assembly 23, a detection assembly 24, and a sterilization assembly 25; the upper end of the push rod assembly 22 is connected to the driving assembly 21, the slide rail assembly 23 is located below the push rod assembly 22, the detection assembly 24 is connected to the driving assembly 21, and the sterilization assembly 25 is connected to the left end of the driving assembly 21.

[0044] As Figure 3 shown in the figure, the driving assembly 21 includes a synchronous belt linear module 211, which is connected to the frame 7 through two fixed brackets 212 and is located above the inlet bag end roller assembly 5; one end of the synchronous belt linear module 211 is connected to a servo motor 213.

[0045] As Figure 5, 6 As shown in the figure, the push rod assembly 22 includes a first fixing plate 221. The upper end of the first fixing plate 221 is connected to the moving block of the synchronous belt linear module 211. The lower end of the first fixing plate 221 is rotatably connected to the push rod 223 through a pin shaft 222, and the lower end of the push rod 223 is connected to the bayonet part 224. The sterile bag runs continuously. When the bayonet part 224 pushes one into the filling head assembly 1, the synchronous belt linear module 211 drives the push rod 223 to retract. During the retraction process, the lower end of the push rod 223 and the bayonet part 224 will touch the next sterile bag. At this time, the push rod 223 will rotate around the pin shaft 222 to bypass the sterile bag.

[0046] As Figure 3 shown, the slide rail assembly 23 includes two slide rails 231. The two slide rails 231 are respectively connected to the synchronous belt linear module 211 through multiple first connecting plates 232; the two slide rails 231 are located above the bag inlet end roller assembly 5.

[0047] As Figure 4 shown, the detection assembly 24 includes a first detection switch 241, a second detection switch 242, a third detection switch 243, a first photoelectric switch 244 and a second photoelectric switch 245; the first detection switch 241 and the third detection switch 243 are respectively arranged at the left and right ends of the synchronous belt linear module 211, and the second detection switch 242 is arranged in the middle of the synchronous belt linear module 211; a second connecting plate is connected to each of the left end and the middle of the synchronous belt linear module 211, and the lower ends of the two second connecting plates are respectively connected to the first photoelectric switch 244 and the second photoelectric switch 245. The first detection switch 241, the second detection switch 242, and the third detection switch 243 detect the position of the push rod assembly 22 in real time; the first photoelectric switch 244 and the second photoelectric switch 245 detect the movement position of the sterile bag.

[0048] As Figure 3 , 7 As shown in FIGS. 7 and 8, there are two sterilization assemblies 25 which are respectively arranged on the front and back sides of the left end of the synchronous belt linear module 211; the sterilization assembly 25 includes a pushing cylinder 251 and a steam spraying cover 252. The pushing cylinder 251 is connected to the synchronous belt linear module 211, and the output end of the pushing cylinder 251 is connected to the steam spraying cover 252. The steam spraying cover 252 is communicated with the steam assembly 6. There is an inward flanging at the lower end of the steam spraying cover 252. This structure prevents the rapid loss of steam and has an effect of gathering.

[0049] Specifically, after the sterile bag enters between the two slide rails 231, the servo motor 213 drives the synchronous belt linear module 211 to drive the push rod assembly 22 to move, so that the bayonet part 224 on the push rod 223 pushes the sterile bag at the right end of the two slide rails 231 into the filling head assembly 1 at the left end of the slide rail 231. During the pushing process, when the push rod 223 pushes the sterile bag to the sterilization assembly 25 position, the pushing cylinder 251 pushes the steam spray cover 252 out to perform a sterilization operation on the sterile bag.

[0050] As Figure 9 shown, the filling head assembly 1 includes a filling chamber 11, a cap pulling and pressing assembly 12, a filling assembly 13, a material pipe 14, a steam inlet 15 for the filling chamber and a steam outlet 16 for the filling chamber; the cap pulling and pressing assembly 12 and the filling assembly 13 are both connected to the upper end face of the filling chamber 11, the lower end of the material pipe 14 communicates with the upper end of the filling assembly 13 and is connected to the filling valve assembly 4; the steam inlet 15 for the filling chamber and the steam outlet 16 for the filling chamber communicate with the steam assembly 6. A bag blocking plate 17 is provided at the top of the filling chamber 11. The steam inlet 15 for the filling chamber and the steam outlet 16 for the filling chamber communicate with the steam assembly 6 for performing a sterilization operation on the filling chamber 11.

[0051] As Figure 10 、 11 shown, the cap pulling and pressing assembly 12 includes a mouth bag fixing plate 121, an arc-shaped bayonet is provided at one end of the mouth bag fixing plate 121, and a fixed rotating rod 122 is connected to the other end; the outer wall of the fixed rotating rod 122 is rotatably connected to an outer shaft rod 123, a rotating groove 124 is provided on the outer shaft rod 123, a limiting shaft 125 is connected to the outer wall of the fixed rotating rod 122, and the limiting shaft 125 is slidably connected in the rotating groove 124; the upper end of the outer shaft rod 123 is connected to a connecting frame 126, the connecting frame 126 is connected to the output end of the first driving cylinder 127, and the lower end of the outer shaft rod 123 is connected to a cap pulling and pressing module 1210; the upper end of the fixed rotating rod 122 is connected to a rocker arm 128, and the other end of the rocker arm 128 is rotatably connected to the output end of the second driving cylinder 129. The cap pulling and pressing module 1210 is located above the mouth bag fixing plate 121.

[0052] As Figure 10 shown, the filling assembly 13 includes a third driving cylinder 131, a filling rod 132, a fourth driving cylinder 133 and a material chamber 134; the output end of the third driving cylinder 131 is connected to the filling rod 132; the output end of the fourth driving cylinder 133 is connected to the material chamber 134.

[0053] After the sterile bag enters the filling chamber 11, the clamping post of the end with an arc-shaped bayonet on the mouth bag fixing plate 121 clamps the sterile bag. The first driving cylinder 127 drives the connecting frame 126 to drive the plugging and capping module 1210 and the outer shaft rod 123 to rotate and offset in the rotation groove 124 of the fixed rotating rod 122. At the same time, the plugging and capping module 1210 drives the mouth cover of the sterile bag to be pulled up to disengage from the bag mouth and rotate away; at the same time, the fourth driving cylinder 133 drives the material chamber 134 to move downward, so that the bottom of the material chamber 134 cooperates with the bag mouth of the sterile bag. The third driving cylinder 131 drives the filling rod 132 to move downward to start filling; when the filling volume of the sterile bag is reached according to the feedback of the mass flowmeter, the third driving cylinder 131 drives the filling rod 132 to reset upward and the filling is closed; the fourth driving cylinder 133 drives the material chamber 134 to move upward to reset; the first driving cylinder 127 drives the connecting frame 126 to drive the plugging and capping module 1210 and the outer shaft rod 123 to rotate and offset in the rotation groove 124 of the fixed rotating rod 122 to reset; at the same time, the plugging and capping module 1210 drives the mouth cover of the sterile bag to rotate downward to complete the capping reset; the second driving cylinder 129 drives the swing arm 128 to rotate the mouth bag fixing plate 121, the plugging and capping module 1210, the outer shaft rod 123, the fixed rotating rod 122 and the sterile bag together; when the bag mouth of the sterile bag touches the bag blocking plate 17, the sterile bag is separated from the mouth bag fixing plate 121 and falls to the bag cutting assembly 10 to start bag cutting and separation, entering the next step.

[0054] As Figure 12 Shown in the figure, the filling head sealing and lifting assembly 9 includes a lifting cylinder 91. The upper end of the lifting cylinder 91 is connected to a sealing plate 92. A conveying pipe 93 is connected to the sealing plate 92. The other end of the conveying pipe 93 communicates with the CIP / SIP condensation circulation assembly 8. The lifting assembly 9 drives the sealing plate 92 to rise to seal the bottom of the filling chamber 11, and the inside of the filling chamber 1 is cleaned and sterilized through the CIP / SIP condensation circulation assembly 8.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic continuous aseptic bag filling machine, characterized in that: It comprises a filling head assembly (1), a pushing assembly (2), a filling valve assembly (4), a bag feeding end roller assembly (5), a steam assembly (6), a frame (7), a CIP / SIP condensation circulation assembly (8), a filling head sealing lifting assembly (9) and a bag cutting assembly (10); The right end of the middle part of the frame (7) is connected to the bag feeding end roller assembly (5), the pushing assembly (2) is arranged at the upper end of the bag feeding end roller assembly (5), the filling head assembly (1) is arranged at the left end of the pushing assembly (2), the filling head assembly (1) is connected to the frame (7), the bag cutting assembly (10) is arranged at the left end of the filling head assembly (1), and the bag cutting assembly (10) is connected to the frame (7); the top of the frame (7) is connected to the filling valve assembly (4), and the filling valve assembly (4) is connected to the filling head assembly (1); the frame (7) is provided with a steam assembly (6), and the steam assembly (6) is connected to the filling head assembly (1); the filling head sealing lifting assembly (9) is arranged below the filling head assembly (1), and the CIP / SIP condensation circulation assembly (8) is connected to the filling head assembly (1) through the filling head sealing lifting assembly (9).

2. The automatic continuous aseptic bag filling machine according to claim 1, characterized in that: The bag feeding end roller assembly (5) comprises a roller frame (51), a plurality of first unpowered rollers (52) are rotatably connected to the roller frame (51), and the right end of the roller frame (51) is rotatably connected to a second unpowered roller (53), wherein a centering plate (54) is connected to one of the first unpowered rollers (52) close to the second unpowered roller (53).

3. The automatic continuous aseptic bag filling machine according to claim 1, characterized in that: The pushing assembly (2) comprises a driving assembly (21), a push rod assembly (22), a slide rail assembly (23), a detection assembly (24) and a sterilization assembly (25); the upper end of the push rod assembly (22) is connected to the driving assembly (21), the slide rail assembly (23) is located below the push rod assembly (22), the detection assembly (24) is connected to the driving assembly (21), and the sterilization assembly (25) is connected to the left end of the driving assembly (21).

4. The automatic continuous aseptic bag filling machine according to claim 3, characterized in that: The driving assembly (21) comprises a synchronous belt linear module (211), the synchronous belt linear module (211) being connected to the frame (7) via two fixed brackets (212) and being located above the bag-feeding end roller assembly (5); one end of the synchronous belt linear module (211) is connected to a servo motor (213).

5. The automatic continuous aseptic bag filling machine according to claim 4, characterized in that: The push rod assembly (22) comprises a first fixed plate (221), the upper end of the first fixed plate (221) is connected to the moving block of the synchronous belt linear module (211), the lower end of the first fixed plate (221) is rotatably connected to the push rod (223) through a pin shaft (222), and the lower end of the push rod (223) is connected to a bayonet piece (224).

6. The automatic continuous aseptic bag filling machine according to claim 4, characterized in that: The slide rail assembly (23) comprises two slide rails (231), and the two slide rails (231) are respectively connected to the synchronous belt linear module (211) through a plurality of first connecting plates (232); the two slide rails (231) are located above the bag feeding end roller assembly (5).

7. The automatic continuous aseptic bag filling machine according to claim 4, characterized in that: The detection component (24) comprises a first detection switch (241), a second detection switch (242), a third detection switch (243), a first photoelectric switch (244) and a second photoelectric switch (245); the first detection switch (241) and the third detection switch (243) are respectively arranged at the left and right ends of the synchronous belt linear module (211), and the second detection switch (242) is arranged in the middle of the synchronous belt linear module (211); the left end and the middle of the synchronous belt linear module (211) are each connected to a second connecting plate, and the lower ends of the two second connecting plates are respectively connected to the first photoelectric switch (244) and the second photoelectric switch (245).

8. The automatic continuous aseptic bag filling machine according to claim 4, characterized in that: The sterilization component (25) is composed of two groups, which are respectively arranged on the front and rear sides of the left end of the synchronous belt linear module (211); the sterilization component (25) comprises a pushing cylinder (251) and a steam spray cover (252), the pushing cylinder (251) is connected to the synchronous belt linear module (211), the output end of the pushing cylinder (251) is connected to the steam spray cover (252), and the steam spray cover (252) is connected to the steam component (6).

9. The automatic continuous aseptic bag filling machine according to claim 1, characterized in that: The filling head assembly (1) comprises a filling chamber (11), a pressure-extracting cover assembly (12), a filling assembly (13), a material pipe (14), a filling chamber steam inlet (15) and a filling chamber steam outlet (16); the pressure-extracting cover assembly (12) and the filling assembly (13) are both connected to the upper end surface of the filling chamber (11); the lower end of the material pipe (14) is connected to the upper end of the filling assembly (13) and is connected to the filling valve assembly (4); the filling chamber steam inlet (15) and the filling chamber steam outlet (16) are connected to the steam assembly (6).

10. The automatic continuous aseptic bag filling machine according to claim 9, characterized in that: The extraction and pressing cover assembly (12) comprises a mouth bag fixing plate (121), one end of the mouth bag fixing plate (121) is provided with an arc-shaped bayonet, and the other end is connected to a fixed rotating rod (122); the outer wall of the fixed rotating rod (122) is rotatably connected to an outer shaft (123), and a rotating groove (124) is provided on the outer shaft (123); the outer wall of the fixed rotating rod (122) is connected to a limiting shaft (125), and the limiting shaft (125) is slidably connected to the fixing rotating rod (122) The outer shaft (123) is connected to the rotating groove (124); the upper end of the outer shaft (123) is connected to the connecting frame (126), the connecting frame (126) is connected to the output end of the first driving cylinder (127), and the lower end of the outer shaft (123) is connected to the extraction and pressing cover module (1210); the upper end of the fixed rotating rod (122) is connected to the rocker arm (128), and the other end of the rocker arm (128) is rotatably connected to the output end of the second driving cylinder (129).

11. The automatic continuous aseptic bag filling machine according to claim 9, characterized in that: The filling assembly (13) comprises a third driving cylinder (131), a filling rod (132), a fourth driving cylinder (133) and a material compartment (134); the output end of the third driving cylinder (131) is connected to the filling rod (132); and the output end of the fourth driving cylinder (133) is connected to the material compartment (134).

12. The automatic continuous aseptic bag filling machine according to claim 9, characterized in that: A bag blocking plate (17) is arranged on the top of the filling chamber (11).

13. The automatic continuous aseptic bag filling machine according to claim 9, characterized in that: The filling head sealing lifting assembly (9) comprises a lifting cylinder (91), the upper end of the lifting cylinder (91) is connected to a sealing plate (92), the sealing plate (92) is connected to a delivery pipe (93), and the other end of the delivery pipe (93) is connected to the CIP / SIP condensation circulation assembly (8).

14. The automatic continuous aseptic bag filling machine according to claim 10, characterized in that: The extraction and pressing cover module (1210) is located above the mouth bag fixing plate (121).