Powder and liquid double-chamber bag manufacturing process

Abstract

This invention discloses a manufacturing process for a powder-liquid dual-chamber bag, relating to the field of dual-chamber bag preparation technology. This process utilizes a concave frame and the cooperation of pressure plates and transmission components on both sides. When the concave frame moves downward, the pressure plates and transmission components smooth out the two membrane bodies and expel air between them. Then, as the lifting block inside the concave frame continues to slide, a false weld plate is used to perform a false weld on the center of the membrane body. Finally, welding plates are used to weld and press the membrane body around its perimeter. Simultaneously, printing is performed by a printing mechanism during the sliding of the concave frame. Compared to traditional welding and pressing methods, this process improves work efficiency and avoids wrinkles and skewing of the membrane body during welding, pressing, and printing, thus enhancing the equipment's performance.

Description

Technical Field

[0001] This invention relates to the field of double-chamber bag preparation technology, specifically to the process flow for manufacturing powder-liquid double-chamber bags. Background Technology

[0002] The powder-liquid dual-chamber infusion bag product is a newly developed domestic drug product that combines both infusion and powder dosage forms. Its key feature is the use of a non-PVC infusion bag to separately fill the liquid infusion and powder medications, forming a single unit for convenient clinical use and improved medication safety. Its production process encompasses two main parts: the production of non-PVC soft bag infusions and the packaging of the powder. Referring to Chinese patent application number "201110156509.1" entitled "Production Process of Powder-Liquid Dual-Chamber Infusion Bag Product," this patent solves the existing problems of contamination during clinical drug preparation and improves infusion safety. The application addresses issues of poor feasibility, rationality, and reliability. It primarily utilizes a bag-making machine for the welding, printing, filling, and inspection of medicine bags. However, during the bag-making and printing processes, air can remain inside the bag during the welding and pressing of the corners and center. Removing this air during filling via vacuum is cumbersome and can lead to wrinkles and skewing during welding and printing, affecting the bag's forming quality and the welding effect in the center. To address these issues, we propose a powder-liquid double-chamber bag manufacturing process. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a process flow for manufacturing powder-liquid dual-chamber bags, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a process flow for manufacturing powder-liquid dual-chamber bags, specifically including the following steps:

[0005] S1. Bag making: The infusion membrane is transported into the bag making device. The infusion membrane is sealed and welded by the bag making device to form a double-chamber bag. Then, the surface of the double-chamber bag is printed.

[0006] S2. Drug filling: First, the double-chamber bags are tested for sealing. The qualified double-chamber bags are then transported to the filling station for filling with liquid or powder medicine, and then sealed.

[0007] S3. Inspection: The double-chamber bags containing medicine are transported to the inspection line for inspection. Defective products with leaks at the seal or other defects are removed. Then, the qualified double-chamber bags are disinfected and sealed.

[0008] Preferably, the bag-making device in S2 includes an organic body, the inside of which is provided with a material conveying component, and the film body is conveyed through the material conveying component;

[0009] The machine body has a concave frame that slides up and down inside, and a concave pressure frame is fixed at the end of the concave frame. A hydraulic cylinder is provided between the concave frame and the machine body to drive the concave frame to run. Pressure plates are slidably installed on both sides inside the concave pressure frame. A transmission component is provided between the pressure plate and the concave frame, which can drive the pressure plate to slide to both sides as the concave frame slides down, smoothing the membrane body.

[0010] The machine body has a fixed bottom support plate inside, and the bottom support plate is equipped with a welding assembly inside. The welding assembly can cooperate with the concave pressure frame on both sides to perform welding and pressing operations on the membrane body.

[0011] The concave frame has a slidingly mounted false welding plate for performing false welding operations on the middle part of the membrane body.

[0012] Preferably, an elastic bottom scraper is slidably installed at the bottom of the pressure plate. The elastic bottom scraper can fit into the membrane body as the concave frame and pressure plate descend. A roller is rotatably connected to the middle of the outer side of the pressure plate.

[0013] Preferably, a printing assembly is fixed to the top surface of one side of the pressure plate. The printing assembly includes a printing mechanism. A fixing plate is fixed to the top surface of the pressure plate. The printing mechanism is slidably installed inside the fixing plate. An adjusting cylinder is fixed inside the fixing plate to drive the printing mechanism to move up and down.

[0014] Preferably, the transmission assembly includes a lifting block, which is slidably installed inside the concave frame, and the piston end of the hydraulic cylinder is fixedly connected to the lifting block. Both sides of the bottom of the lifting block are rotatably connected to connecting rods, and the ends of the two connecting rods are respectively rotatably connected to the corresponding pressure plates.

[0015] Preferably, the welding assembly includes a welding piece, the bottom support plate has a through groove, the through groove has a lifting frame that slides inside, the welding piece is fixed to the top surface of the lifting frame, and a lifting cylinder is fixed inside the lifting frame to drive the lifting frame and the welding piece to move upward and weld the membrane body.

[0016] Preferably, the bottom support plate has slots on all four sides of its top surface, and a sealing plate slides inside each slot. A spring is fixed between the end of each sealing plate and the corresponding inner wall of the slot, and the ends of the multiple sealing plates have arc-shaped surfaces.

[0017] Preferably, the feeding assembly includes two sets of feeding rollers and multiple heating rollers. The multiple heating rollers are rotatably connected inside the machine body and are driven by the cooperation of sprockets and chains. Both sets of feeding rollers are rotatably connected inside the machine body for conveying two film bodies. The ends of both sets of feeding rollers are fixedly sleeved with transmission gears for transmission.

[0018] Beneficial effects

[0019] This invention provides a process flow for manufacturing a powder-liquid dual-chamber bag. Compared with the prior art, it has the following advantages:

[0020] (1) The powder-liquid double-chamber bag manufacturing process, through the cooperation of the concave frame and the pressure plates on both sides and the transmission components, when the concave frame moves down, can smooth the two film bodies through the cooperation of the pressure plates and the transmission components and squeeze out the air between the two film bodies. Then, as the lifting block inside the concave frame continues to slide, the middle part of the film body can be welded through the welding plate. Finally, the film body is welded around the perimeter through the welding plate. At the same time, the printing mechanism can be used to print words during the sliding of the concave frame. Compared with the traditional welding and pressing method, the work efficiency is improved. At the same time, the phenomenon of wrinkles and skewing of the film body during the welding and pressing and printing process is avoided, thus improving the use effect of the equipment.

[0021] (2) The manufacturing process of the powder-liquid double chamber bag is achieved by using an elastic bottom scraper that is slidably installed at the bottom of the pressure plate. When the pressure plate moves down, the elastic bottom scraper is forced to slide upward and always remains in contact with the membrane body. As the pressure plate moves, the scraper moves horizontally on the surface of the membrane body, which further improves the smoothing effect of the membrane body. At the same time, the friction between the scraper and the membrane body is reduced by the cooperation of the rollers, which improves the protective effect of the membrane body.

[0022] (3) The manufacturing process of the powder liquid double chamber bag, through the multiple sealing plates inside the bottom support plate, can play a heat insulation role, avoid the deformation of the membrane body during the transportation process, and affect the subsequent hot pressing. At the same time, when the membrane body is subjected to the downward pressure of the concave pressure frame, the sealing plates can provide a certain support force, ensuring the limiting effect of the membrane body. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of cross-section structure;

[0025] Figure 3 For the present invention Figure 2 Enlarged structural diagram of point A in the middle;

[0026] Figure 4 This is a schematic cross-sectional view of the cleaning frame of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the bottom support plate of the present invention;

[0028] Figure 6 For the present invention Figure 5 Enlarged structural diagram of point B;

[0029] Figure 7 This is a schematic diagram of the concave frame and concave pressure frame structure of the present invention;

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of cross-section structure;

[0031] Figure 9 This is a schematic diagram of the exploded structure of the pressure plate and the elastic bottom scraper of the present invention.

[0032] In the diagram: 1. Machine body; 2. Conveying roller; 3. Membrane body; 4. Feeding roller; 401. Transmission gear; 5. Heating roller; 6. Cleaning frame; 601. Cleaning scraper; 602. Arc groove; 603. Support spring; 7. Bottom support plate; 701. Groove opening; 702. Sealing plate; 7021. Arc surface; 703. Spring body; 704. Lifting frame; 7041. Welding piece; 705. Positioning plate; 706. Lifting cylinder; 707. Slide groove; 8. Concave frame; 8 01. Hydraulic cylinder; 802. Limiting groove; 9. Concave pressure frame; 901. Arc-shaped opening; 10. Pressure plate; 1001. Roller; 1002. Connecting rod; 1003. Through hole; 1004. Elastic bottom scraper; 1005. Limiting rod; 1006. Return spring; 1007. Elastic pull rope; 11. Lifting block; 1101. Slide plate; 12. Fixing plate; 1201. Adjusting cylinder; 1202. Printing mechanism; 13. Poorly welded plate; 1301. Telescopic spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-9 The present invention provides two technical solutions, specifically including the following embodiments:

[0035] Example 1:

[0036] The manufacturing process of powder-liquid double-chamber bags includes the following steps:

[0037] S1. Bag making: The infusion membrane is transported into the bag making device. The infusion membrane is sealed and welded by the bag making device to form a double-chamber bag. Then, the surface of the double-chamber bag is printed.

[0038] S2. Drug filling: First, the double-chamber bags are tested for sealing. The qualified double-chamber bags are then transported to the filling station for filling with liquid or powder medicine, and then sealed.

[0039] S3. Inspection: The double-chamber bags containing medicine are transported to the inspection line for inspection. Defective products with leaks at the seal or other defects are removed. Then, the qualified double-chamber bags are disinfected and sealed.

[0040] In this embodiment of the invention, specifically, the bag-making device in S2 includes an organic body 1, and the inside of the organic body 1 is provided with a material conveying component, through which the film body 3 is conveyed;

[0041] In the embodiments of the present invention, specifically, refer to Figure 2 , Figures 7-9 Inside the machine body 1, a concave frame 8 slides vertically, and concave pressure frames 9 are fixed to the ends of the concave frame 8. A hydraulic cylinder 801 is provided between the concave frame 8 and the machine body 1 to drive the concave frame 8. The hydraulic cylinder 801 is fixed inside the machine body 1, and the piston end of the hydraulic cylinder 801 passes through the concave frame 8 and is connected to the lifting block 11. Pressure plates 10 are slidably installed on both sides inside the concave pressure frame 9. The two pressure plates 10 are kept flush and in contact with each other. A transmission component is provided between the pressure plate 10 and the concave frame 8, which can drive the pressure plate 10 to slide to both sides as the concave frame 8 slides down, smoothing the membrane body 3. When the hydraulic cylinder 801 moves, the pressure plate 10 slides vertically. When the 1st ejection is performed, the concave frame 8, the concave pressure frame 9, and the pressure plate 10 can move downwards until the concave pressure frame 9 contacts the membrane body 3 and then the concave frame 8 stops moving downwards. At this time, the two pressure plates 10 also contact the membrane body 3, squeezing the two membrane bodies 3 together and expelling the internal air. As the hydraulic cylinder 801 continues to operate, the lifting block 11 can slide down inside the concave frame 8, and then, through the cooperation of the transmission components, drive the two pressure plates 10 to slide outwards. As the pressure plates 10 slide outwards, the air between the two membrane bodies 3 can be squeezed out until the pressure plates 10 slide to fit against the inner wall of the concave pressure frame 9 and then stop.

[0042] In the embodiments of the present invention, specifically, refer to Figures 5-6 The machine body 1 has a fixed bottom support plate 7 inside, and the bottom support plate 7 is equipped with a welding assembly. The welding assembly can cooperate with the concave pressure frame 9 on both sides to perform welding and pressing operations on the membrane body 3. When the pressure plate 10 slides to fit against the inner wall of the concave pressure frame 9, the air inside the two membrane bodies 3 can be discharged through the arc-shaped opening 901 left at the end of the concave pressure frame 9. This section is not welded and is used for filling medicine and then sealing. As the concave pressure frame 9 on both sides fits against the membrane body 3, the membrane body 3 is pressed onto the bottom support plate 7. With the cooperation of the welding assembly, welding and pressing operations are performed on all four sides of the membrane body 3.

[0043] In this embodiment of the invention, a false welding plate 13 is further slidably installed inside the concave frame 8 for performing false welding on the middle part of the membrane body 3. When the lifting block 11 slides down inside the concave frame 8, it can simultaneously drive the false welding plate 13 to slide inside the concave frame 8 until the false welding plate 13 contacts the membrane body 3. At this time, the contact position between the false welding plate 13 and the membrane body 3 has been smoothed by the pressure plate 10. As the false welding plate 13 contacts the membrane body 3, it can perform false welding on the middle part of the membrane body 3. The false welding here is the weld seam in the middle of the double-chamber bag.

[0044] In this embodiment of the invention, both ends of the weldless plate 13 are fixed with a telescopic spring 1301 between the lifting block 11 and the two ends of the weldless plate 13. When the lifting block 11 moves down, it drives the weldless plate 13 to move down. The telescopic spring 1301 can apply a certain force to the membrane body 3 to ensure the weldless effect.

[0045] In this embodiment of the invention, further reference is made to... Figure 9 An elastic bottom scraper 1004 is slidably installed on the bottom of the pressure plate 10. Through holes 1003 are opened on both sides of the inside of the pressure plate 10. Limiting rods 1005 are fixed on both sides of the top surface of the elastic bottom scraper 1004. The limiting rods 1005 are slidably installed inside the through holes 1003, and a return spring 1006 is sleeved at the end of each limiting rod 1005. The elastic bottom scraper 1004 can fit against the membrane body 3 as the concave frame 8 and the pressure plate 10 descend. A roller 1001 is rotatably connected to the middle of the outer side of the pressure plate 10. With the setting of the roller 1001, when the pressure plate 10 is pressed on the membrane body 3 and slides outward, the roller 1001 can contact the membrane body 3 and roll on the surface of the membrane body 3 through the sliding of the pressure plate 10, reducing the friction between the roller and the membrane body 3 and improving the protective effect of the membrane body 3.

[0046] In this embodiment of the invention, an elastic pull rope 1007 is fixed between the two pressure plates 10. When the welding operation is completed, the hydraulic cylinder 801 drives the concave frame 8 to rise. As the concave pressure frame 9 and the pressure plate 10 separate from the membrane body 3, the two pressure plates 10 can be driven to reset.

[0047] In this embodiment of the invention, when the pressure plate 10 moves down, the elastic bottom scraper 1004 first contacts the film body 3. As the pressure plate 10 presses down, the limiting rods 1005 on both sides slide inside the corresponding through holes 1003. At this time, the reset spring 1006 is pressed, so that the elastic bottom scraper 1004 always stays in contact with the film body 3 and applies a certain force to the film body 3. When the pressure plate 10 slides outward, the elastic bottom scraper 1004 contacts the film body 3 and scrapes outward, which can better remove the air between the two film bodies 3, making it easier to perform welding and printing operations later.

[0048] In this embodiment of the invention, a printing component is fixed on the top surface of a pressure plate 10 on one side. The printing component includes a printing mechanism 1202. A fixing plate 12 is fixed on the top surface of the pressure plate 10. The printing mechanism 1202 is slidably installed inside the fixing plate 12. An adjusting cylinder 1201 is fixed inside the fixing plate 12 for driving the printing mechanism 1202 to move up and down.

[0049] In this embodiment of the invention, when the pressure plate 10 moves outward, it can smooth the film body 3 and squeeze out the air between the two film bodies 3. At this time, by adjusting the operation of the cylinder 1201, the printing mechanism 1202 can be driven to move up and down to contact the film body 3, and print on the surface of the film body 3, thereby improving the printing effect.

[0050] In this embodiment of the invention, the transmission assembly specifically includes a lifting block 11, with sliding plates 1101 fixed on both sides of the lifting block 11. Limiting grooves 802 are formed on both sides of the interior of the concave frame 8. The lifting block 11 is slidably installed inside the concave frame 8 through the cooperation of the sliding plates 1101 and the limiting grooves 802. The piston end of the hydraulic cylinder 801 passes through the concave frame 8 and is fixedly connected to the center of the top surface of the lifting block 11. When the piston end of the hydraulic cylinder 801 extends, it can drive the concave frame 8 and the lifting block 11 to descend until the concave pressure frame 9 at the bottom of the concave frame 8 contacts the membrane body 3. As the piston end of the hydraulic cylinder 801 continues to extend, the lifting block 11 can slide down inside the concave frame 8. The bottom sides of the lifting block 11 are rotatably connected to connecting rods 1002. The ends of the two connecting rods 1002 are rotatably connected to the corresponding pressure plates 10. As the lifting block 11 slides down, the connecting rods 1002 on both sides can be pressed and rotate along the lifting block 11, thereby driving the pressure plates 10 on both sides to slide outward and scrape the air between the two membrane bodies 3. With the concave pressure frames 9 on both sides limiting the movement, it can prevent external air from re-entering between the two membrane bodies 3.

[0051] In the embodiments of the present invention, specifically, refer to Figures 5-6 The welding assembly includes a welding piece 7041. The bottom support plate 7 has a groove 707 inside. The groove 707 is through-cut and a lifting frame 704 slides inside. The through-cut groove 707 forms a rectangular plate in the middle of the bottom support plate 7. The rectangular plate is fixed to the bottom support plate 7 as a whole. The welding piece 7041 is fixed to the top surface of the lifting frame 704. The lifting frame 704 has a lifting cylinder 706 fixed inside, which is used to drive the lifting frame 704 and the welding piece 7041 to move upward and weld the membrane body 3. After the membrane body 3 is fixed above the bottom support plate 7 by the limiting of the two concave pressure frames 9, the operation of the lifting cylinder 706 can drive the lifting frame 704 and the welding piece 7041 to move upward until the welding piece 7041 contacts the membrane body 3 and welds the two membrane bodies 3 together.

[0052] In the embodiments of the present invention, specifically, refer to Figure 5 The lifting frame 704 has a positioning plate 705 fixed inside. The piston end of the lifting cylinder 706 is fixedly connected to the bottom center of the positioning plate 705. The lifting cylinder 706 can drive the lifting frame 704 to move up and down through the positioning plate 705.

[0053] In the embodiments of the present invention, specifically, refer to Figures 5-6 The bottom support plate 7 has slots 701 on all four sides of its top surface, and sealing plates 702 slide inside each slot 701. Spring bodies 703 are fixed between the ends of the sealing plates 702 and the corresponding inner walls of the slots 701. The ends of multiple sealing plates 702 have arc-shaped surfaces 7021. When the lifting frame 704 and welding piece 7041 are not pushed out, the sealing plates 702, supported by the spring bodies 703, can seal the sliding grooves 707. This serves two purposes: firstly, it provides heat insulation, preventing deformation of the membrane body 3 during transport, which would affect subsequent hot pressing; secondly, it also... When the membrane body 3 is subjected to the downward pressure of the concave pressure frame 9, the sealing plate 702 can provide a certain support force. When the lifting frame 704 and the welding piece 7041 are pushed out, the lifting frame 704 can first contact the arc-shaped surface 7021 opened at the end of the sealing plate 702. As the lifting frame 704 contacts the arc-shaped surface 7021, the sealing plate 702 can be pressed into the corresponding slot 701 and squeeze the corresponding spring body 703 until the welding piece 7041 contacts the membrane body 3 to complete the welding operation and retract. Then the sealing plate 702 is reset by the cooperation of the spring body 703.

[0054] In this embodiment of the invention, the feeding assembly includes two sets of feeding rollers 4 and multiple conveying rollers 2. The multiple conveying rollers 2 are rotatably connected inside the machine body 1 and are driven by a sprocket and chain. The sprocket and chain are existing transmission methods. The sprocket is fixedly sleeved on the end of the conveying roller 2, and the chain meshes with it. A single servo motor is used as the drive source. Both sets of feeding rollers 4 are rotatably connected inside the machine body 1 and are used to feed two film bodies 3. The ends of both sets of feeding rollers 4 are fixedly sleeved with transmission gears 401 for transmission. There are two feeding rollers 4 in one set, and the transmission gears 401 at the ends of the two feeding rollers 4 mesh with each other. Both sets of feeding rollers 4 are driven by a single servo motor and are used to feed two film bodies 3. The heating roller 5 is rotatably connected inside the machine body 1. By sticking to the film body 3, it can heat the film body 3, avoid wrinkles in the film body 3, and improve the subsequent hot-press sealing effect.

[0055] Example 2:

[0056] Based on Embodiment 1, and with reference to Embodiment 1, Figures 2-4The machine body 1 is equipped with a cleaning assembly, which includes a cleaning frame 6. The cleaning frame 6 is fixed inside the machine body 1 and is installed between two membrane bodies 3. The cleaning frame 6 has arc-shaped grooves 602 on both sides inside, and a cleaning scraper 601 is slidably installed inside each arc-shaped groove 602. A support spring 603 is fixed between each cleaning scraper 601 and the inner wall of the corresponding arc-shaped groove 602. The ends of the two cleaning scrapers 601 are respectively attached to the inner side of the two membrane bodies 3. When the membrane bodies 3 are being transported, the ends of the cleaning scrapers 601 are always attached to the inner side of the membrane bodies 3, which can clean the inner side of the membrane bodies 3 and improve the use effect of the double-chamber bag.

[0057] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0058] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A manufacturing process for a powder-liquid double-chamber bag, characterized in that, Specifically, the following steps are included: S1. Bag making: The infusion membrane is transported into the bag making device. The bag making device seals and welds the infusion membrane to form a double-chamber bag. Then, the surface of the double-chamber bag is printed. S2. Drug filling: First, the double-chamber bags are tested for sealing. The qualified double-chamber bags are then transported to the filling station for filling with liquid or powder medicine, and then sealed. S3. Inspection: The double-chamber bags containing medicine are transported to the inspection line for inspection. Defective products with leaks at the seal or other defects are removed. Then, the qualified double-chamber bags are disinfected and sealed. The bag-making device in S1 includes an organic body (1), and the inside of the organic body (1) is provided with a material conveying component, through which the film body (3) is conveyed. The machine body (1) has a concave frame (8) that slides up and down inside, and a concave pressure frame (9) is fixed at the end of the concave frame (8). A hydraulic cylinder (801) for driving the concave frame (8) is provided between the concave frame (8) and the machine body (1). A pressure plate (10) is slidably installed on both sides inside the concave pressure frame (9). An elastic pull rope (1007) is fixed between the two pressure plates (10). A transmission component is provided between the pressure plate (10) and the concave frame (8), which can drive the pressure plate (10) to slide to both sides as the concave frame (8) slides down, smoothing the membrane body (3). The body (1) has a bottom support plate (7) fixed inside, and the bottom support plate (7) is equipped with a welding assembly inside. The welding assembly can cooperate with the concave pressure frame (9) on both sides to perform welding and pressing operations on the membrane body (3). The concave frame (8) has a slidingly installed false welding plate (13) for performing false welding on the middle part of the membrane body (3); The welding assembly includes a welding piece (7041), and the bottom support plate (7) has a sliding groove (707) inside. The sliding groove (707) is through and a lifting frame (704) slides inside. The welding piece (7041) is fixed on the top surface of the lifting frame (704). A lifting cylinder (706) is fixed inside the lifting frame (704) to drive the lifting frame (704) and the welding piece (7041) to move upward and weld the membrane body (3). The bottom support plate (7) has slots (701) on all four sides of its top surface, and a sealing plate (702) slides inside each slot (701). A spring body (703) is fixed between the end of the sealing plate (702) and the inner wall of the corresponding slot (701). The ends of the multiple sealing plates (702) are provided with arc-shaped surfaces (7021). When the lifting frame (704) and welding piece (7041) are not ejected, the sealing plate (702) can block the chute (707) through the support of the spring body (703), preventing the membrane body (3) from deforming during transportation. At the same time, the sealing plate (702) can provide a certain support force when the membrane body (3) is subjected to the downward pressure of the concave pressure frame (9). When the lifting frame (704) and welding piece (7041) are ejected, it can... The lifting frame (704) first contacts the arc-shaped surface (7021) at the end of the sealing plate (702). As the lifting frame (704) contacts the arc-shaped surface (7021), the sealing plate (702) is pressed into the corresponding slot (701) and slides, squeezing the corresponding spring body (703) until the welding piece (7041) contacts the membrane body (3) to complete the welding operation and retract. Then the sealing plate (702) is reset by the cooperation of the spring body (703).

2. The manufacturing process of the powder-liquid dual-chamber bag according to claim 1, characterized in that: An elastic bottom scraper (1004) is slidably installed at the bottom of the pressure plate (10). The elastic bottom scraper (1004) can fit with the membrane body (3) as the concave frame (8) and the pressure plate (10) descend. A roller (1001) is rotatably connected to the middle of the outer side of the pressure plate (10).

3. The manufacturing process of the powder-liquid dual-chamber bag according to claim 1, characterized in that: A printing component is fixed on the top surface of the pressure plate (10) on one side. The printing component includes a printing mechanism (1202). A fixing plate (12) is fixed on the top surface of the pressure plate (10). The printing mechanism (1202) is slidably installed inside the fixing plate (12). An adjusting cylinder (1201) is fixed inside the fixing plate (12) for driving the printing mechanism (1202) to move up and down.

4. The manufacturing process of the powder-liquid dual-chamber bag according to claim 1, characterized in that: The transmission assembly includes a lifting block (11), which is slidably installed inside the concave frame (8), and the piston end of the hydraulic cylinder (801) is fixedly connected to the lifting block (11). Both sides of the bottom of the lifting block (11) are rotatably connected to connecting rods (1002), and the ends of the two connecting rods (1002) are rotatably connected to the corresponding pressure plates (10).

5. The manufacturing process of the powder-liquid dual-chamber bag according to claim 1, characterized in that: The feeding assembly includes two sets of feeding rollers (4) and multiple heating rollers (5). The multiple heating rollers (5) are rotatably connected inside the machine body (1) and are driven by the cooperation of sprockets and chains. Both sets of feeding rollers (4) are rotatably connected inside the machine body (1) for conveying two film bodies (3). The ends of both sets of feeding rollers (4) are fixedly sleeved with transmission gears (401) for transmission.

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