A double-chamber bag powder chamber filling and sealing system

Abstract

The present invention relates to a double-chamber bag powder chamber filling and sealing system, the technical solution of which includes a workbench, a bag conveying device embedded in the workbench, and a powder filling device and a sealing device fixed on the workbench and arranged in sequence along the bag conveying direction, the powder filling device includes a powder storage bin fixedly installed above the bag conveying device, a plurality of filling funnels are arranged at the bottom of the powder storage bin, a first bag opening mechanism for opening the double-chamber bag powder chamber before filling the powder, and an electrostatic elimination mechanism for neutralizing the ions carried by the powder during the powder filling process are arranged below the filling funnel, and the double-chamber bag after the powder filling is transported to the sealing device by the bag conveying device for hot pressing and sealing. The advantage of the present invention is that the ions carried by the powder can be neutralized during filling, so as to prevent the powder from being adsorbed on the incision at the top of the powder bag, and ensure the integrity of the sealing of the powder bag after sealing.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a double-chamber bag powder chamber filling and sealing system. Background Art

[0002] The powder-liquid double-chamber bag includes a medicine powder bag and a medicine liquid bag. The medicine powder bag and the medicine liquid bag are separated by a weak welding rod. The weak welding rod can withstand the requirements of terminal sterilization. The weak welding rod is broken by squeezing the medicine powder bag and the medicine liquid bag, thereby connecting the medicine powder bag and the medicine liquid bag, and the medicine powder and the medicine are aseptically mixed.

[0003] When filling the powder bag with powder, place the powder-liquid double-chamber bag with the tube mouth facing downwards. At this time, the powder bag is located above the liquid bag. Use a cutting machine to cut the top of the powder bag, then fill the powder bag with powder, and finally weld and seal the cut at the top of the powder bag.

[0004] However, during the welding process, some of the powder carrying ions will be adsorbed on the sealing mouth, resulting in poor sealing of the powder bag. It is necessary to remove static electricity from the powder before filling. Summary of the invention

[0005] The purpose of the present invention is to provide a double-chamber bag powder chamber filling and sealing system, which has the advantage of being able to neutralize the ions carried by the powder during filling, preventing the powder from being adsorbed on the incision at the top of the powder bag, and ensuring the integrity of the sealing of the powder bag after sealing.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a double-chamber bag powder chamber filling and sealing system, comprising a workbench, a bag conveying device embedded in the workbench, and a powder filling device and a sealing device fixed on the workbench and arranged in sequence along the bag conveying direction, the powder filling device comprising a powder storage bin fixedly installed above the bag conveying device, at least one filling funnel is arranged at the bottom end of the powder storage bin, a first bag opening mechanism for opening the double-chamber bag powder chamber before filling with powder, and an electrostatic elimination mechanism for neutralizing the ions carried on the powder during the powder filling process are arranged below the filling funnel, and the double-chamber bag after powder filling is transported to the sealing device by the bag conveying device for hot pressure sealing.

[0007] By adopting the above technical scheme, a bag conveying device is embedded inside the workbench, and the bag conveying device can carry the double-chamber bag from one end of the workbench to the other end of the workbench. When filling powder, the bag conveying device carries the double-chamber bag and stays under the filling funnel. Before filling, the powder chamber of the double-chamber bag is opened by the first bag opening mechanism, so that the powder can smoothly fall into the double-chamber bag. During the powder filling process, the static electricity elimination mechanism neutralizes the ions carried by the powder, so that the powder adsorbed on the incision of the double-chamber bag can fall into the powder chamber. After the powder filling is completed, the double-chamber bag is transported by the bag conveying device to the bottom of the sealing device at the other end of the workbench, and the incision of the double-chamber bag is welded tightly by the sealing device.

[0008] The present invention is further configured as follows: the bag conveying device includes a chain and a bag hanging assembly, a plurality of the bag hanging assemblies are arranged at equal intervals along the length direction of the chain, the bag hanging assembly includes two connecting rods arranged at intervals, the two connecting rods are fixed to the chain in a vertical posture, and the top of the connecting rod is equipped with a bag hanging pin for hanging the double-chamber bag, and the double-chamber bag is fixed between the two bag hanging pins by inserting and fixing through mounting holes opened on both sides of the bag.

[0009] By adopting the above technical solution, a plurality of bag hanging assemblies are arranged at equal intervals on the chain, and the bag hanging assemblies have two horizontally arranged bag hanging pins. The double-chamber bag can be inverted on the bag hanging pins with the pipe mouth facing downward through the mounting holes opened on the double-chamber bag, so that the powder storage bin can fill powder to multiple double-chamber bags at the same time through the filling funnel.

[0010] The present invention is further configured as follows: the first bag opening mechanism includes two main cylinders A correspondingly arranged under each filling funnel, the two main cylinders A are oppositely arranged on both sides of the bag conveying device along a conveying direction perpendicular to the bag body, and the cylinder axes of the two main cylinders A are fixedly connected with first bag opening suction cups, and the two first bag opening suction cups are driven by the main cylinders A on each side to approach or move away from each other.

[0011] By adopting the above technical solution, the main cylinder A is driven to make the two first bag opening suction cups approach each other, and the first bag opening suction cups are adsorbed on the double-chamber bag from their respective sides, and then the main cylinder A is driven to make the two first bag opening suction cups move away from each other. During the moving away process, the incision of the double-chamber bag is stretched open, so that the powder can fall smoothly into the double-chamber bag.

[0012] The present invention is further configured as follows: the static elimination mechanism includes a first ionization gun head correspondingly arranged above each main cylinder A on one side of the workbench, one end of the first ionization gun head is connected to an ion generator, and the other end is inclined toward the bottom of the filling funnel, and the first ionization gun head is equipped with an air inlet pipe with the same direction as its pipe mouth.

[0013] By adopting the above technical solution, during the powder filling process, the ions generated at the tip of the first ion gun are blown to the incision of the double-chamber bag through the air inlet pipe to neutralize the ions carried by the powder, so that the powder can fall into the double-chamber bag smoothly, preventing the powder from being adsorbed on the incision of the double-chamber bag due to the ions it carries, resulting in loose subsequent hot pressing sealing.

[0014] The present invention is further configured as follows: the sealing device includes an inflation mechanism and a hot pressing mechanism, the inflation mechanism is fixedly installed above the hot pressing mechanism through a second bracket, the inflation mechanism includes a main inflation pipe, one end of the main inflation pipe is connected to a gas storage bottle, and the other end is connected to a flow meter, the flow meter is fixedly installed on the second bracket, the other end of the flow meter is connected to branch inflation pipes with the same number as the filling funnel, each of the branch inflation pipes is connected to a nitrogen filling needle, and the nitrogen filling needle is driven by the main cylinder B on the second bracket to extend into or out of the double-chamber bag on the bag conveying device.

[0015] By adopting the above technical solution, the nitrogen in the main inflation pipe is equally divided into each sub-inflation pipe through the flow meter, and then each nitrogen filling needle is driven by the main cylinder B to extend into the powder chamber of the double-chamber bag located below it, and the powder chamber is filled with nitrogen. The chemical property of nitrogen is inactive and can be used as a protective gas for powder. Then, the incision of the double-chamber bag is hot-pressed and welded by the hot-pressing mechanism.

[0016] The present invention is further configured as follows: the hot pressing mechanism is driven by the main cylinder C on the workbench to move up and down, and the hot pressing mechanism includes first cylinders correspondingly arranged on both sides below the nitrogen filling needle along a direction perpendicular to the bag conveying direction, the cylinder shafts of the two first cylinders are fixedly connected with first pressure heads, the two first pressure heads are driven by the first cylinders to approach or move away from each other, a clearance groove for the nitrogen filling needle to pass through is provided on one side where the two first pressure heads are butt-jointed, a second cylinder is correspondingly arranged above the first cylinder, the cylinder shaft of the second cylinder is fixedly connected with a second pressure head, and the two second pressure heads are driven by the second cylinder to approach or move away from each other.

[0017] By adopting the above technical solution, the nitrogen filling needle is inserted into the powder chamber of the double-chamber bag, and then the two first pressure heads are driven by the first cylinder to perform hot-pressing welding on the incision of the double-chamber bag. The nitrogen filling needle blows out the air in the powder chamber of the double-chamber bag from the gap between the two give-way grooves, so that the powder chamber is filled with nitrogen. The two first pressure heads are then controlled to leave by the first cylinder, the nitrogen filling needle is driven to leave by the main cylinder B, and the hot-pressing mechanism is driven to descend by the main cylinder C, so that the second pressure heads are located on both sides of the incision of the double-chamber bag, and the incision of the double-chamber bag is further hot-pressed and welded by the second pressure heads, so that the incision of the double-chamber bag is completely welded.

[0018] The present invention is further configured as follows: the sealing device also includes a second bag opening mechanism, which is driven by a main cylinder D on the workbench to move up and down, and the second bag opening mechanism includes two auxiliary cylinders D relatively arranged below the inflation mechanism, and the two auxiliary cylinders D are relatively arranged on both sides of the bag conveying device along a conveying direction perpendicular to the bag body, and second bag opening suction cups are fixedly connected to the cylinder axes of the two auxiliary cylinders D, and the two second bag opening suction cups are driven by the auxiliary cylinders D on each side to move closer to or away from each other.

[0019] By adopting the above technical solution, the double-chamber bag after powder filling is transported to the bottom of the sealing device through the chain. Before inflation, the double-chamber bag can be opened to both sides by the second bag opening mechanism, so that the nitrogen filling needle can be smoothly inserted into the sub-chamber of the double-chamber bag. Then, the second bag opening mechanism is lifted upward by the main cylinder D on the workbench, so that the second bag opening mechanism leaves the two sides of the double-chamber bag.

[0020] The present invention is further configured as follows: the sub-inflation pipe is connected to a pneumatic diaphragm valve and a mixing tank, the mixing tank is located downstream of the pneumatic diaphragm valve, a second ion gun head is arranged at the mixing tank, one end of the second ion gun head is connected to an ion generator, and the other end is inserted and fixed in the mixing tank.

[0021] By adopting the above technical solution, the ions generated by the ion generator enter the mixing tank through the second ion gun head and mix with nitrogen, so that the nitrogen carries the ions into the powder chamber of the double-chamber bag. The ions carried in the nitrogen can neutralize the ions carried on the powder, preventing the powder from being adsorbed on the incision of the double-chamber bag, resulting in poor sealing effect of the double-chamber bag after hot pressing.

[0022] The present invention is further configured as follows: a buffer cylinder is provided on the main inflation pipe, and the buffer cylinder is located upstream of the flow meter.

[0023] By adopting the above technical solution, the flow rate and pressure of nitrogen in the main inflation pipe can be guaranteed to be stable through the buffer cylinder.

[0024] The present invention is further configured as follows: the mixing tank and the nitrogen filling needle are indirectly fixed on the second bracket through a polyfluoro sleeve sleeved on the mixing tank and the nitrogen filling needle.

[0025] By adopting the above technical solution, the mixing tank, the nitrogen filling needle and the second bracket are all made of metal, and the polytetrafluoroethylene sleeve has a good insulating effect, which can prevent the ions in the mixing tank and the nitrogen filling needle from being conducted away from the second bracket, causing the loss of ions.

[0026] In summary, the beneficial technical effects of the present invention are:

[0027] 1. The powder storage bin fills the double-chamber bag on the bag conveying device with powder through the filling funnel. The powder chamber of the double-chamber bag is opened to both sides by the first bag opening mechanism before filling. The static electricity elimination mechanism removes static electricity from the powder falling into the double-chamber bag to prevent the powder carrying ions from being adsorbed on the incision of the powder chamber of the double-chamber bag due to static electricity, so that the sealing device can weld the incision of the double-chamber bag tightly.

[0028] 2. The nitrogen gas carrying ions is injected into the powder chamber of the double-chamber bag through the inflation mechanism, and the original air in the powder chamber is blown out to prevent the powder from remaining at the incision of the double-chamber bag. The first pressure head of the hot pressing mechanism performs preliminary hot pressing on the incision, and the second pressure head performs further hot pressing on the incision, so that the incision of the double-chamber bag can be completely welded;

[0029] 3. The setting of the buffer cylinder can provide nitrogen with stable flow and pressure in the sub-filling pipe, and the setting of the flow meter is conducive to controlling the gas volume;

[0030] 4. The setting of the PTFE sleeve can prevent the ions in the mixing tank and the nitrogen-filling needle from being conducted away from the second bracket, so that the nitrogen can carry the ions and neutralize the residual ions on the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a schematic structural diagram of the powder filling device of the present invention.

[0033] Figure 3 yes Figure 2 Enlarged view of part A.

[0034] Figure 4 It is a schematic diagram of the structure of the conveying device in the present invention.

[0035] Figure 5 It is a structural schematic diagram of the sealing device in the present invention.

[0036] Figure 6 It is a structural schematic diagram of the nitrogen charging mechanism in the present invention.

[0037] Figure 7 It is a schematic diagram for explaining the positional relationship between the second bag opening mechanism and the heat pressing mechanism.

[0038] Figure 8 It is a schematic diagram for showing the connection structure between the second ion gun head and the mixing tank.

[0039] Fig. 9 It is a schematic diagram of the internal structure of the mixing tank.

[0040] In the figure, 1, workbench; 11, first bracket; 12, second bracket; 2, bag conveying device; 21, chain; 22, bag hanging assembly; 221, connecting rod; 222, bag hanging pin; 3, powder filling device; 31, powder storage bin; 311, filling funnel; 32, first bag opening mechanism; 321, main cylinder A; 322, first bag opening suction cup; 323, limit block; 324, limit groove; 325, limit plate; 33, static elimination mechanism; 331, first ion gun head; 332, air inlet pipe; 333, connecting plate; 334, air outlet nozzle; 4, sealing device; 41 , inflation mechanism; 411, main inflation pipe; 412, flow meter; 413, sub-inflation pipe; 414, nitrogen filling needle; 415, main cylinder B; 416, mixing tank; 417, second ion gun head; 418, pneumatic diaphragm valve; 419, buffer cylinder; 42, hot pressing mechanism; 421, main cylinder C; 422, first cylinder; 423, first pressure head; 4231, give way groove; 424, second cylinder; 425, second pressure head; 43, second bag opening mechanism; 431, main cylinder D; 432, auxiliary cylinder D; 433, second bag opening suction cup; 5, polytetrafluoroethylene sleeve. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0042] Reference Figure 1 , which is a double-chamber bag powder chamber filling and sealing system disclosed in the present invention, comprising a workbench 1, a bag conveying device 2, a powder filling device 3 and a sealing device 4, the bag conveying device 2 is embedded in the interior of the workbench 1 along the length direction of the workbench 1, and the powder filling device 3 and the sealing device 4 are arranged in sequence at both ends of the workbench 1 along the conveying direction of the bag.

[0043] Reference Figure 2 and Figure 3 The powder filling device 3 includes a powder storage bin 31, which is fixed directly above the bag conveying device 2 through a first bracket 11. At least one filling funnel 311 is provided at the bottom of the powder storage bin 31, and the powder in the powder storage bin 31 is filled into the powder chamber of the double-chamber bag through the filling funnel 311.

[0044] Refer to 2 and Figure 3 A first bag opening mechanism 32 and a static eliminating mechanism 33 are arranged on the workbench 1 below the filling funnel 311. The static eliminating mechanism 33 is located above the first bag opening mechanism 32. The powder chamber of the double-chamber bag is opened to both sides by the first bag opening mechanism 32 before filling with powder. The static eliminating mechanism 33 removes static electricity from the powder falling into the double-chamber bag to prevent the powder carrying ions from being adsorbed at the incision due to static electricity, which helps the sealing device 4 to weld the incision of the double-chamber bag tightly.

[0045] Reference Figure 1 and Figure 4 The bag conveying device 2 includes a chain 21 and a bag hanging assembly 22. A plurality of bag hanging assemblies 22 are arranged at equal intervals along the length direction of the chain 21, so that the powder storage bin 31 can simultaneously fill multiple double-chamber bags with powder through the filling funnel 311. The bag hanging assembly 22 includes two spaced connecting rods 221, the horizontal distance between the two connecting rods 221 is slightly smaller than the width of the double-chamber bag, the bottom end of the connecting rod 221 is vertically fixed to the chain 21, and a bag hanging pin 222 is installed at the top end of the connecting rod 221. The bag hanging pin 222 is arranged horizontally, and the double-chamber bag is suspended between the two bag hanging pins 222 with the pipe opening facing downward through the mounting holes opened on both sides of the double-chamber bag.

[0046] Reference Figure 2 and Figure 3 The first bag opening mechanism 32 includes two main cylinders A321 correspondingly arranged under each filling funnel 311. The two main cylinders A321 are oppositely arranged on both sides of the chain 21 along the conveying direction perpendicular to the bag body. The cylinder shafts of the two main cylinders A321 are fixedly connected with first bag opening suction cups 322. During the powder filling process, the main cylinders A321 are driven to make the two first bag opening suction cups 322 approach each other, and the two first bag opening suction cups 322 are adsorbed on the double-chamber bag from their respective sides, and then the main cylinder A321 is driven to make the two first bag opening suction cups 322 move away from each other. During the moving away process, the first bag opening suction cups 322 pull the double-chamber bag from both sides and gradually open the incision of the double-chamber bag, so that the powder can smoothly fall into the double-chamber bag from the filling funnel 311 of the powder filling bin 31.

[0047] Reference Figure 3 Furthermore, a limiting block 323 is fixed at the end of the main cylinder A321, and a through hole is opened on the limiting block 323 for the cylinder shaft to pass through horizontally. A limiting groove 324 is formed on the side of the limiting block 323 facing the bag conveying device 2, and the limiting groove 324 is arranged along the vertical direction of the limiting block 323. The groove walls on both sides of the limiting groove 324 extend vertically toward the limiting groove 324 to form two limiting plates 325, and a gap is left between the two limiting plates 325 for the cylinder shaft to pass through, so that after the powder filling is completed, the cylinder shaft drives the first bag opening suction cup 322 to be retracted into the limiting groove 324, and under the stopping action of the limiting plate 325, the double-chamber bag is separated from the first bag opening suction cup 322, and then the double-chamber bag is transported to the sealing device 4 through the bag conveying device 2.

[0048] Reference Figure 2 and Figure 3The static elimination device includes a first ion gun head 331 provided on each main cylinder A321 on one side of the corresponding chain 21, and the first ion gun head 331 is fixed above the main cylinder A321 through a connecting plate 333. One end of the first ion gun head 331 is connected to an ion generator, and the other end is arranged at an angle toward the bottom of the filling funnel 311. Each first ion gun head 331 is equipped with an air inlet pipe 332, and one end of the air inlet pipe 332 is provided with an air outlet nozzle 334 in the same direction as the first ion gun head 331. The ions generated at the first ion gun head 331 are blown to the incision of the powder chamber of the double-chamber bag through the air outlet nozzle 334 to neutralize the ions carried by the powder, so as to prevent the powder from being adsorbed on the double-chamber bag due to static electricity, resulting in the inability to seal the incision of the double-chamber bag tightly during subsequent hot pressing and sealing.

[0049] Reference Figure 5 The sealing device 4 includes an air filling mechanism 41 and a hot pressing mechanism 42. The air filling mechanism 41 is fixedly installed directly above the hot pressing mechanism 42 through the second bracket 12. Among them, the air filling mechanism 41 includes a main air filling pipe 411. One end of the main air filling pipe 411 is connected to a gas storage bottle. Nitrogen is stored in the gas storage bottle. The other end of the main air filling pipe 411 is connected to a flow meter 412. The flow meter 412 is fixedly installed on the second bracket 12 to control the flow rate of nitrogen. The other end of the flow meter 412 is connected to the same number of sub-air filling pipes 413 as the filling funnel 311. Each sub-air filling pipe 413 is connected to a nitrogen filling needle 414. A main cylinder B415 is provided at the position corresponding to each nitrogen filling needle 414 on the second bracket 12. The main cylinder B415 drives the nitrogen filling needle 414 to extend into or out of the powder chamber of the double-chamber bag. Each main cylinder B415 can work independently without affecting each other. After the powder filling is completed, the chain 21 transports the double-chamber bag to the bottom of the inflation mechanism 41, and drives the main cylinder B415 to allow the nitrogen filling needle 414 to extend into the double-chamber bag, so that the nitrogen in the gas cylinder can be filled into the double-chamber bag. Nitrogen can protect the powder as an inert gas. It is worth noting that before filling the powder, the flow meter 412 needs to be adjusted to control the size of the airflow to prevent the airflow from being too strong, to ensure that the nitrogen can be filled smoothly, and at the same time, the residual powder at the incision can be cleaned up for a second time.

[0050] Reference Figure 5 and Figure 6The hot pressing mechanism 42 is driven by the main cylinder C421 under the workbench 1 to move up and down. The hot pressing mechanism 42 includes a first cylinder 422 arranged on both sides below the nitrogen filling needle 414 along a direction perpendicular to the bag conveying direction. The cylinder axes of the two first cylinders are horizontally arranged toward the bag conveying device 2. A first pressing head 423 is fixedly connected to the cylinder axis of the first cylinder 422. A clearance groove 4231 for the nitrogen filling needle 414 to pass through is provided on the side where the two first pressing heads 423 are close to each other. The first pressing heads 423 are driven close to each other by the first cylinder 422, so that the incision of the double-chamber bag is hot-pressed and sealed, and the original air in the double-chamber bag is bulged out from the gap of the clearance groove 4231 by nitrogen, so that the nitrogen fills the powder chamber of the double-chamber bag.

[0051] Reference Figure 6 A second cylinder 424 is correspondingly arranged above the first cylinder 422, and a second pressing head 425 is fixedly connected to the cylinder shaft of the second cylinder 424. After the first pressing head 423 completes the preliminary hot pressing of the incision of the double-chamber bag, the first cylinder 422 drives the first pressing head 423 to leave, the main cylinder B415 drives the nitrogen filling needle 414 to leave, and the main cylinder C421 drives the hot pressing mechanism 42 to descend as a whole, so that the second cylinder 424 is located at the initial position of the first cylinder 422, and then the second pressing head 425 is driven by the second cylinder 424 to completely weld the incision of the double-chamber bag tightly.

[0052] Reference Figure 6 and Figure 7 , considering that the double-chamber bag is in a state to be sealed after the powder filling is completed, the two sides of the incision of some double-chamber bags will be re-attached together, which is not conducive to the insertion of the nitrogen filling needle 414. Here, a second bag opening mechanism 43 is arranged on the workbench 1 below the inflation mechanism 41, and the second bag opening mechanism 43 includes a main cylinder D432, and the main cylinder D431 is relatively arranged on both sides of the bag conveying device 2. The cylinder axes of the two main cylinders D431 are both arranged vertically upward, and the cylinder axes of the two main cylinders D431 are fixedly installed with auxiliary cylinders D432. The output axes of the two auxiliary cylinders D432 are relatively arranged horizontally toward the bag conveying device 2, and second bag opening suction cups are arranged on both sides of each nitrogen filling needle 414. The second bag opening suction cup 433 on each side is connected to the cylinder axis of the auxiliary cylinder D432 on each side through a connecting plate, and the second bag opening suction cups 433 on both sides of the nitrogen filling needle 414 can be driven to move closer or farther from each other through the auxiliary cylinder D432.

[0053] Before inflation, the double-chamber bag is stretched to both sides by two second bag opening suction cups 433 so that the nitrogen filling needle 414 can be smoothly inserted into the sub-chamber of the double-chamber bag, and then the second bag opening mechanism 43 is lifted upward by the main cylinder D431 on the workbench 1 so that the second bag opening suction cup 433 is staggered with the first pressing head 423, so that the first pressing head 423 can press the incision of the double-chamber bag during the inflation process.

[0054] Reference Figure 8 and Fig. 9 The sub-filling tube 413 is also connected to a mixing tank 416, which is in the shape of a bullet head. A second ion gun head 417 is provided on the mixing tank 416, one end of the second ion gun head 417 is connected to an ion generator, and the other end is inserted into the mixing tank 416. The ions are fully mixed with the nitrogen in the mixing tank 416, so that the nitrogen in the sub-filling tube 413 can carry the ions into the powder chamber of the double-chamber bag to neutralize the residual ions on the powder, thereby further ensuring that there is no powder residue at the incision of the double-chamber bag.

[0055] Reference Figure 5 or Figure 8 A pneumatic diaphragm valve 418 is provided on the sub-inflation pipe 413 between the mixing tank 416 and the flow meter 412. The pneumatic diaphragm valve 418 mainly controls the opening and closing of the sub-inflation pipe 413, thereby controlling the nitrogen filling needle 414 to inflate the double-chamber bag.

[0056] Reference Figure 5 A buffer cylinder 419 is provided on the main inflation pipe 411 upstream of the flow meter 412. The buffer cylinder 419 can ensure the stability of the flow and pressure of nitrogen in the main inflation pipe 411 so as to bulge out the original air in the double-chamber bag powder chamber.

[0057] Reference Figure 8 Since the mixing tank 416, the nitrogen filling needle 414 and the second bracket 12 are all made of metal, it is worth noting that if the mixing tank 416 and the nitrogen filling needle 414 are directly fixed on the second bracket 12, most of the ions in the mixing tank 416 and the nitrogen filling needle 414 will be conducted away from the second bracket 12, so that the ions carried by the nitrogen are insufficient to neutralize the ions remaining on the powder, causing part of the powder to still be adsorbed on the incision of the double-chamber bag. For this reason, a polyfluoro sleeve 5 is provided on the mixing tank 416 and the nitrogen filling needle 414. The polyfluoro sleeve 5 has good insulation. The mixing tank 416 and the nitrogen filling needle 414 are indirectly fixed on the second bracket 12 through the polyfluoro sleeve 5 to avoid the loss of ions.

[0058] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-chamber bag powder chamber filling and sealing system, characterized in that: The invention comprises a workbench (1), a bag conveying device (2) embedded in the workbench (1), and a powder filling device (3) and a sealing device (4) fixed on the workbench (1) and arranged in sequence along the bag conveying direction, wherein the powder filling device (3) comprises a powder storage bin (31) fixedly mounted above the bag conveying device (2), at least one filling funnel (311) is arranged at the bottom end of the powder storage bin (31), a first bag opening mechanism (32) for opening the double-chamber bag powder chamber before powder filling, and a static electricity elimination mechanism (33) for neutralizing the ions carried by the powder during the powder filling process are arranged below the filling funnel (311), and the double-chamber bag after powder filling is transported to the sealing device (4) by the bag conveying device (2) for hot-pressing sealing; The first bag opening mechanism (32) comprises two main air cylinders A (321) correspondingly arranged below each filling funnel (311); the static elimination mechanism (33) comprises a first ion gun head (331) correspondingly arranged above each main air cylinder A (321) on one side of the workbench (1); one end of the first ion gun head (331) is connected to an ion generator, and the other end is arranged obliquely toward the bottom of the filling funnel (311); the first ion gun head (331) is provided with an air inlet pipe (332) with the same direction as its pipe mouth; The sealing device (4) comprises an inflation mechanism (41) and a hot pressing mechanism (42); the inflation mechanism (41) is fixedly mounted above the hot pressing mechanism (42) via a second bracket (12); the inflation mechanism (41) comprises a main inflation tube (411); one end of the main inflation tube (411) is connected to a gas storage bottle, and the other end is connected to a flow meter (412); the flow meter (412) is fixedly mounted on the second bracket (12); the other end of the flow meter (412) is connected to sub-inflation tubes (413) of the same number as the filling funnel (311); each of the sub-inflation tubes (413) is connected to a nitrogen filling needle (414); the nitrogen filling needle (414) is driven by a main cylinder B (415) on the second bracket (12) to extend into or extend out of the double-chamber bag on the bag conveying device (2); The sub-inflating pipe (413) is connected to a pneumatic diaphragm valve (418) and a mixing tank (416). The mixing tank (416) is located downstream of the pneumatic diaphragm valve (418). A second ion gun head (417) is provided at the mixing tank (416). One end of the second ion gun head (417) is connected to an ion generator, and the other end is inserted and fixed in the mixing tank (416). The mixing tank (416) and the nitrogen filling needle (414) are indirectly fixed to the second bracket (12) through a polytetrafluoroethylene sleeve (5) sleeved on the mixing tank (416). The hot pressing mechanism (42) is driven by a main cylinder C (421) on the workbench (1) to move up and down. The hot pressing mechanism (42) comprises a first cylinder (422) arranged on both sides below the nitrogen filling needle (414) in a direction perpendicular to the bag conveying direction. The cylinder shafts of the two first cylinders (422) are fixedly connected with a first pressing head (423). The two first pressing heads (423) are driven by the first cylinders (422) to move closer to or farther from each other. A clearance groove (4231) for the nitrogen filling needle (414) to pass through is provided on one side where the two first pressing heads (423) are butt-jointed. A second cylinder (424) is correspondingly arranged above the first cylinder (422). The cylinder shaft of the second cylinder (424) is fixedly connected with a second pressing head (425). The two second pressing heads (425) are driven by the second cylinder (424) to move closer to or farther from each other.

2. The double-chamber bag powder chamber filling and sealing system according to claim 1, characterized in that: The bag conveying device (2) comprises a chain (21) and a bag hanging assembly (22), wherein a plurality of bag hanging assemblies (22) are arranged at equal intervals along the length direction of the chain (21), and the bag hanging assembly (22) comprises two spaced connecting rods (221), wherein the two connecting rods (221) are fixedly connected to the chain (21) in a vertical posture, and a bag hanging pin (222) for hanging the double-chamber bag is installed at the top end of the connecting rod (221), and the double-chamber bag is fixed between the two bag hanging pins (222) by means of mounting holes provided on both sides of the double-chamber bag.

3. The double-chamber powder bag chamber filling and sealing system according to claim 1, characterized in that: Two main air cylinders A (321) are arranged opposite to each other on both sides of the bag conveying device (2) along a direction perpendicular to the conveying direction of the bag body. The cylinder shafts of the two main air cylinders A (321) are fixedly connected with first bag opening suction cups (322). The two first bag opening suction cups (322) are driven by the main air cylinders A (321) on their respective sides to move closer to or farther away from each other.

4. The double-chamber powder bag chamber filling and sealing system according to claim 1, characterized in that: The sealing device (4) also includes a second bag opening mechanism (43), which is driven by a main cylinder D (431) on the workbench (1) to move up and down. The second bag opening mechanism (43) includes two auxiliary cylinders D (432) relatively arranged below the inflation mechanism (41), and the two auxiliary cylinders D (432) are relatively arranged on both sides of the bag conveying device (2) along a direction perpendicular to the conveying direction of the bag body. The cylinder axes of the two auxiliary cylinders D (432) are fixedly connected with second bag opening suction cups (433), and the two second bag opening suction cups (433) are driven by the auxiliary cylinders D (432) on each side to move closer to or away from each other.

5. The double-chamber powder bag chamber filling and sealing system according to claim 1, characterized in that: The main air filling pipe (411) is provided with a buffer cylinder (419), and the buffer cylinder (419) is located upstream of the flow meter (412).

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