CN215243212U - Powder-liquid double-chamber bag production equipment and helium filling device of aluminum film welding chamber thereof - Google Patents
Powder-liquid double-chamber bag production equipment and helium filling device of aluminum film welding chamber thereof Download PDFInfo
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- CN215243212U CN215243212U CN202121122641.6U CN202121122641U CN215243212U CN 215243212 U CN215243212 U CN 215243212U CN 202121122641 U CN202121122641 U CN 202121122641U CN 215243212 U CN215243212 U CN 215243212U
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Abstract
The utility model discloses a powder-liquid double-chamber bag production device and a helium filling device of an aluminum film welding chamber thereof, wherein the helium filling device of the aluminum film welding chamber comprises an upper adsorption component and a lower adsorption component; the upper adsorption assembly is used for sucking open an upper aluminum film connected with the soft bag through two first welding surfaces to form a first welding cavity, and the lower adsorption assembly is used for sucking open a lower aluminum film connected with the soft bag through two second welding surfaces to form a second welding cavity to form an opening; the helium filling device also comprises a helium filling nozzle for realizing helium filling, and a helium filling driver which is fixedly connected with the helium filling nozzle and is used for driving the helium filling nozzle to be inserted into the opening to realize helium filling. The helium filling device can meet the requirement of residual oxygen in the cavity, and meanwhile, the helium filling device can fill helium in a plurality of soft bags simultaneously, namely, the number of the soft bags between the upper aluminum film and the lower aluminum film can be multiple, and the soft bags are arranged side by side, so that the working efficiency can be improved.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to helium filling device of aluminium membrane welding cavity. The utility model discloses still relate to a two room bag production facility of powder liquid of helium filling device who has this aluminium membrane welding cavity.
Background
Currently, a powder-liquid dual-chamber bag is a high-end soft infusion bag type product, and the soft bag comprises two chambers, wherein one chamber is filled with liquid medicine, the other chamber is filled with medicinal powder, and the two chambers are separated by weak welding.
The powder has high requirement on the environment, so that two sides of the powder cavity are required to be respectively welded with a layer of aluminum film for protection, the welding effect of the aluminum film is poor, and the protection effect is also influenced, so that helium gas is filled between the aluminum film and the soft bag before welding, and whether the aluminum film is welded qualified or not is judged by helium gas leakage detection. However, in the helium filling device in the prior art, the helium filling process is as follows: firstly, placing a helium filling pipe above a soft bag, then conveying an aluminum film downwards to a position attached to the soft bag, pressing the aluminum film by an aluminum pressing film plate, and meanwhile, reserving a groove avoiding the helium filling pipe on the aluminum pressing film plate, so that an air outlet of the helium filling pipe is pressed between the aluminum film and the soft bag, a sealed cavity is formed between the aluminum film and the soft bag, at the moment, a valve for controlling helium to enter is opened, and the helium is filled into the sealed cavity through the helium outlet of a helium pipe. However, the above helium filling method has low helium filling efficiency, only one soft bag can be filled with helium at a time, and only a little helium gas can be reserved in the chamber, which cannot guarantee the requirement of residual oxygen amount.
Therefore, how to avoid the low helium filling efficiency of the conventional helium filling method is a technical problem that needs to be solved by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a helium filling device of aluminium membrane welding cavity can satisfy the requirement of the residual oxygen volume of cavity to can fill the helium operation to a plurality of soft bags simultaneously, thereby improve work efficiency. The utility model also aims to provide a powder-liquid double-chamber bag production device of the helium filling device comprising the aluminum film welding chamber.
In order to achieve the purpose, the utility model provides a helium filling device of an aluminum film welding chamber, which comprises an upper adsorption component and a lower adsorption component; the upper adsorption assembly is used for sucking open an upper aluminum film connected with the soft bag through two first welding surfaces to form a first welding cavity, and the lower adsorption assembly is used for sucking open a lower aluminum film connected with the soft bag through two second welding surfaces to form a second welding cavity to form an opening; the helium filling device also comprises a helium filling nozzle for realizing helium filling, and a helium filling driver which is fixedly connected with the helium filling nozzle and is used for driving the helium filling nozzle to be inserted into the opening to realize helium filling.
Optionally, a first helium filling channel for filling helium to a first welding chamber formed by the upper aluminum film and the soft bag and a second helium filling channel for filling helium to a second welding chamber formed by the lower aluminum film and the soft bag are arranged inside the helium filling nozzle.
Optionally, the first helium charging channel and the second helium charging channel are arranged in parallel.
Optionally, the helium filling nozzle is further provided with a holding groove located between the first helium filling channel and the second helium filling channel and used for holding the edge of the soft bag.
Optionally, a guide port communicated with the accommodating groove and used for allowing the edge of the soft bag to enter the accommodating groove is formed at the tail end of the helium filling nozzle.
Optionally, the guide opening is embodied as a bell mouth.
Optionally, the helium charging system further comprises a transverse driver fixedly connected with the helium charging driver and used for driving the helium charging driver to move along the horizontal direction.
Optionally, the upper adsorption component comprises an upper sucker and an aluminum adsorption film upper driver fixedly connected with the upper sucker through an upper fixing block; the lower adsorption component comprises a lower sucker and an aluminum adsorption film lower driver fixedly connected with the lower sucker through a lower fixing block.
The utility model also provides a two room bag production facility of powder liquid, including above-mentioned arbitrary aluminium membrane welding cavity fill helium device.
Optionally, the gas-extracting device is arranged on one side of the soft bag far away from the helium filling device and used for extracting gas from a welding cavity formed by the soft bag and the aluminum film when the helium filling device fills helium.
Compared with the prior art, the embodiment of the utility model provides a helium filling device of aluminium membrane welding cavity, including last adsorption component and lower adsorption component, upper layer aluminium membrane and the lower floor aluminium membrane of soft bag are inhaled respectively to upper adsorption component and lower adsorption component, and wherein, upper layer aluminium membrane is connected so as to form first welding cavity through two first welding faces with the soft bag, and lower floor aluminium membrane is connected so as to form second welding cavity through two second welding faces with the soft bag; that is, the upper adsorption assembly sucks the upper aluminum film of the soft bag from the upper side, and the lower adsorption assembly sucks the lower aluminum film of the soft bag from the lower side, so that an opening for filling helium to a welding chamber formed between the soft bag and the aluminum film is formed at one side of the soft bag; furthermore, the helium filling device also comprises a helium filling nozzle and a helium filling driver, wherein the helium filling nozzle is used for filling helium, the helium filling driver is fixedly connected with the helium filling nozzle, and the helium filling driver is used for driving the helium filling nozzle to be inserted into the opening to fill helium into the welding chamber. Compared with the traditional helium filling device which can only fill helium into a soft bag at a time and only can keep a little helium in the cavity, and cannot ensure the requirement of the residual oxygen amount, the helium filling device provided by the embodiment of the utility model can meet the requirement of the residual oxygen amount of the cavity, namely, the helium filling nozzle is inserted into the opening formed on one side of the soft bag after the aluminum film is absorbed by the upper absorption component and the lower absorption component, and the helium is filled into the first welding cavity and the second welding cavity so as to discharge the air of the first welding cavity and the second welding cavity from one side of the soft bag away from the opening, thus ensuring the residual oxygen amount in the cavity; meanwhile, the helium filling device can fill helium into a plurality of soft bags simultaneously, namely, the number of the soft bags between the upper aluminum film and the lower aluminum film can be multiple, and the soft bags are arranged side by side, so that the working efficiency can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic helium filling diagram of a helium filling device of an aluminum film welding chamber according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a helium charging nozzle;
FIG. 3 is a partial top view of FIG. 1;
FIG. 4 is a schematic diagram of the flexible bag after the helium filling nozzle retracts after the flexible bag reaches the edge welding station;
FIG. 5 is a schematic view of a soft bag structure after edge welding is completed;
FIG. 6 is a schematic view showing the helium charging device and the air exhaust device separately disposed on two sides of the soft bag.
Wherein:
1-an aluminum absorption film upper driver, 2-an upper fixed block, 3-an upper sucker, 4-an aluminum absorption film lower driver, 5-a lower fixed block, 6-a lower sucker, 7-a helium filling nozzle, 71-a first helium filling channel, 72-a second helium filling channel, 73-an accommodating groove, 74-a guide port, 8-a fixed plate, 9-a helium filling driver, 10-a connecting plate, 11-a transverse driver, 12-an upper aluminum film, 13-a lower aluminum film, 14-a soft bag, 15-an upper edge welding mould, 16-a lower edge welding mould, 17-a clamp, 18-a first welding surface, 19-a second welding surface, 20-a first welding cavity and 21-a second welding cavity;
101-helium charging device and 102-air pumping device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a helium filling device of aluminium membrane welding cavity can satisfy the requirement of the residual oxygen volume of cavity to can fill the helium operation to a plurality of soft bags simultaneously, thereby improve work efficiency. The other core of the utility model is to provide a powder-liquid double-chamber bag production device of the helium filling device comprising the aluminum film welding chamber.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 to 6, fig. 1 is a schematic helium filling diagram of a helium filling device of an aluminum film welding chamber according to an embodiment of the present invention; FIG. 2 is a schematic structural view of a helium charging nozzle; FIG. 3 is a partial top view of FIG. 1; FIG. 4 is a schematic diagram of the flexible bag after the helium filling nozzle retracts after the flexible bag reaches the edge welding station; FIG. 5 is a schematic view of a soft bag structure after edge welding is completed; FIG. 6 is a schematic view showing the helium charging device and the air exhaust device separately disposed on two sides of the soft bag.
The embodiment of the utility model provides a helium filling device 101 of aluminium membrane welding cavity, including last adsorption component and lower adsorption component, go up the upper aluminum membrane 12 and the lower floor's aluminium membrane 13 that adsorption component and lower adsorption component inhaled soft bag 14 respectively to form the opening that is used for letting in the helium.
That is, the upper adsorption member sucks the upper aluminum film 12 of the soft bag 14 from the upper side, and the lower adsorption member sucks the lower aluminum film 13 of the soft bag 14 from the lower side, thereby forming an opening for filling helium into the welding chamber formed between the soft bag 14 and the aluminum film at one side of the soft bag 14.
Specifically, the upper adsorption component comprises an upper sucker 3 and an aluminum-absorbing film upper driver 1, and the aluminum-absorbing film upper driver 1 is fixedly connected with the upper sucker 3 through an upper fixing block 2; the lower adsorption component comprises a lower sucker 6 and an aluminum-absorbing film lower driver 4, and the aluminum-absorbing film lower driver 4 is fixedly connected with the lower sucker 6 through a lower fixing block 5. Therefore, the upper sucker 3 can be driven by the aluminum sucker upper driver 1 to move to a position close to the upper layer aluminum film 12, and the lower sucker 6 can be driven by the aluminum sucker lower driver 4 to move to a position close to the lower layer aluminum film 13.
It should be noted that the full-automatic aluminum film welding machine has already completed the welding of the upper and lower two welding surfaces of the upper aluminum film 12 and the lower aluminum film 13 before the aluminum film suction station, so that the soft bag 14, the upper aluminum film 12 and the lower aluminum film 13 form a cylindrical welding chamber respectively, wherein the full-automatic aluminum film welding machine is a full-automatic production device for welding the aluminum films to the soft bag 14. Specifically, the upper aluminum film 12 and the soft bag 14 are connected by two first welding surfaces 18 to form a first welding chamber 20, and the lower aluminum film 13 and the soft bag 14 are connected by two second welding surfaces 19 to form a second welding chamber 21.
In addition, the clamp 17 is mounted on an annular conveying mechanism of the full-automatic aluminum film welding machine, the annular conveying mechanism can carry the clamp 17 to reach each station in sequence, and meanwhile, the lower-layer aluminum film 13, the soft bag 14 and the upper-layer aluminum film 12 are loaded and fixed on the clamp 17 in sequence from bottom to top.
Furthermore, the helium filling device 101 further comprises a helium filling nozzle 7 and a helium filling driver 9, wherein the helium filling nozzle 7 is used for filling helium, the helium filling driver 9 is fixedly connected with the helium filling nozzle 7, and the helium filling driver 9 is used for driving the helium filling nozzle 7 to be inserted into an opening to fill helium into the welding chamber.
Compare in the tradition once only can carry out the helium filling operation to a soft bag 14 to can only remain a bit helium gas in the cavity, can't guarantee the helium filling device 101 of residual oxygen volume requirement, the utility model provides a helium filling device 101 can satisfy the requirement of cavity residual oxygen volume, utilize promptly to fill helium nozzle 7 and insert the opening that forms in soft bag 14 one side after the aluminium membrane is inhaled by last absorption subassembly and lower absorption subassembly, fill into helium gas through to first welding chamber 20 and second welding chamber 21, with the air of first welding chamber 20 and second welding chamber 21 by soft bag 14 keep away from open-ended one side and discharge, can satisfy the residual oxygen volume requirement in the cavity like this.
Meanwhile, the helium filling device 101 can fill helium into a plurality of soft bags 14 at the same time, that is, the number of the soft bags 14 between the upper layer aluminum film 12 and the lower layer aluminum film 13 can be multiple, and the plurality of soft bags 14 are arranged side by side, so that the working efficiency can be improved.
As shown in fig. 1 and 3, three flexible bags 14 are arranged side by side, the upper aluminum film 12 is connected with the three flexible bags 14 through two first welding surfaces 18 to form a first welding chamber 20, and the lower aluminum film 13 is connected with the three flexible bags 14 through two second welding surfaces 19 to form a second welding chamber 21. When helium is filled, the upper adsorption assembly sucks the upper aluminum film 12 from the upper side, the lower adsorption assembly sucks the lower aluminum film 13 from the lower side, so that an opening for filling helium into the welding cavity is formed in one side of the three soft bags 14, and then the helium is filled into the opening through the helium filling nozzle 7.
Further, as shown in fig. 2, a first helium filling channel 71 and a second helium filling channel 72 are provided inside the helium filling nozzle 7, wherein the first helium filling channel 71 is used for filling helium into the first welding chamber 20 formed by the upper aluminum film 12 and the soft bag 14, and the second helium filling channel 72 is used for filling helium into the second welding chamber 21 formed by the lower aluminum film 13 and the soft bag 14. Of course, the first helium filling channel 71 and the second helium filling channel 72 are arranged in parallel according to actual requirements.
Thus, when the helium filling nozzle 7 is inserted into the opening, helium gas can uniformly flow into the first helium filling channel 71 and the second helium filling channel 72 and enter the first welding chamber 20 formed by the upper aluminum film 12 and the soft bag 14 and the second welding chamber 21 formed by the lower aluminum film 13 and the soft bag 14 along the first helium filling channel 71 and the second helium filling channel 72, respectively.
In order to ensure that helium gas can be smoothly filled into the first welding chamber 20 and the second welding chamber 21, the end of the helium filling nozzle 7 is further provided with a receiving groove 73, the receiving groove 73 is located between the first helium filling channel 71 and the second helium filling channel 72, and the receiving groove 73 is used for receiving the edge of the soft bag 14.
Thus, when the upper aluminum film 12 is sucked open and the lower aluminum film 13 is sucked open, the helium filling nozzle 7 is inserted into the opening, and the edge of the soft bag 14 smoothly enters the receiving groove 73, so that the first helium filling channel 71 is aligned with the first welding chamber 20 between the soft bag 14 and the upper aluminum film 12, and the second helium filling channel 72 is aligned with the second welding chamber 21 between the soft bag 14 and the lower aluminum film 13.
Of course, in order to ensure that the edge of the soft bag 14 smoothly enters the receiving groove 73, the end of the helium filling nozzle 7 is provided with a guide port 74, the guide port 74 is located outside the receiving groove 73, the guide port 74 is communicated with the receiving groove 73, and the guide port 74 is used for guiding the edge of the soft bag 14 when the helium filling nozzle 7 enters the opening, so that the edge of the soft bag 14 can smoothly enter the receiving groove 73.
Preferably, the guide opening 74 is a bell mouth. That is, the inner wall of the guide opening 74 is sloped to facilitate the sliding of the edge of the flexible bag 14 into the receiving slot 73 when the edge of the flexible bag 14 contacts the sloped surface.
In order to optimize the above embodiment, the helium filling device 101 further includes a transverse driver 11 fixedly connected to the helium filling driver 9, and the transverse driver 11 is configured to drive the helium filling driver 9 to move in the horizontal direction. When the helium filling nozzle 7 is inserted into the opening of the aluminum film, the air filling is started, and the air in the helium filling nozzle is exhausted from the other side. Meanwhile, the helium filling nozzle 7 and the clamp 17 are driven by the transverse driver 11 to move synchronously under the driving of annular transmission, and after the helium filling nozzle 7 moves to the edge welding station, the helium filling nozzle returns to stop blowing helium.
In summary, the helium filling process is as follows: when the clamp 17 runs to an aluminum film suction station, the aluminum film suction upper driver 1 and the aluminum film suction lower driver 4 respectively drive the upper sucker 3 and the lower sucker 6 to respectively move towards the upper aluminum film 12 and the lower aluminum film 13, the suckers work to have suction force after reaching the aluminum films, and the aluminum film suction upper driver 1 and the aluminum film suction lower driver 4 return to the initial positions again, so that the upper aluminum film 12 and the lower aluminum film 13 are sucked to open an opening; then, under the drive of the helium filling driver 9, the helium filling nozzle 7 moves towards the direction of the opening of the aluminum film and is inserted into the opening, at this time, the suction disc stops working, and simultaneously the edge of the soft bag 14 is guided to enter the accommodating groove 73 in the middle of the helium filling nozzle 7 directly or through the guide port 74 of the helium filling nozzle 7, because the helium filling nozzle 7 has an upper helium filling channel and a lower helium filling channel, helium can be filled into the cylindrical welding chamber of the soft bag 14 and the upper aluminum film 12 and the cylindrical welding chamber of the soft bag 14 and the lower aluminum film 13 respectively, and thus it can be ensured that helium is filled into both the two welding chambers.
It is to be noted that the charging nozzle 7 is attached to a charging drive 9 by means of a mounting plate 8, and that the charging drive 9 is attached to a transverse drive 11 by means of a connecting plate 10, as shown in fig. 1. When the helium filling nozzle 7 is inserted into the opening of the aluminum film, the air filling is started, and the air in the air filling is exhausted from the other side of the soft bag 14. Meanwhile, the helium filling nozzle 7 is driven by the transverse driver 11 and the clamp 17 to synchronously move under the drive of annular transmission, and after the helium filling nozzle 7 moves to the edge welding station, the helium filling nozzle returns and stops blowing helium. Then, the upper side welding die 15 and the lower side welding die 16 are moved downward and upward, respectively, to complete the welding of both sides of each bag, and then, are returned to the original positions, respectively. This forms a cavity on each of the upper and lower sides of each flexible bag 14 and seals helium gas within each cavity as shown in fig. 4 and 5.
Of course, if it is desired to control the residual oxygen requirement of each chamber, this can be accomplished by varying the helium charging time and flow rate.
The utility model provides a powder-liquid double-chamber bag production device, which comprises a helium filling device 101 of an aluminum film welding chamber described in the above embodiment; in order to improve the helium filling efficiency, the powder-liquid dual-chamber bag production equipment further comprises an air extracting device 102, the air extracting device 102 is arranged on one side of the soft bag 14 to be filled with helium, which is far away from the helium filling device 101, and the air extracting device 102 is used for extracting air from a welding chamber formed by the soft bag 14 and an aluminum film when the helium filling device 101 fills helium, that is, helium is filled on one side of the soft bag 14, and air is extracted on the other side, so that the helium filling efficiency is improved, and the residual oxygen content is ensured, as shown in fig. 6. Of course, the structure of the gas evacuation device 102 can be the same as the structure of the helium charging device 101.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The above is to the powder-liquid double-chamber bag production equipment and the helium filling device of the aluminum film welding chamber thereof provided by the utility model are introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the solution and its core idea of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A helium filling device (101) of an aluminum film welding chamber is characterized by comprising an upper adsorption component and a lower adsorption component; the upper adsorption component is used for sucking open an upper aluminum film (12) connected with the soft bag (14) through two first welding surfaces (18) to form a first welding cavity (20), and the lower adsorption component is used for sucking open a lower aluminum film (13) connected with the soft bag (14) through two second welding surfaces (19) to form a second welding cavity (21) to form an opening; the device also comprises a helium filling nozzle (7) used for realizing helium filling, and a helium filling driver (9) which is fixedly connected with the helium filling nozzle (7) and used for driving the helium filling nozzle (7) to be inserted into the opening to realize helium filling.
2. The aluminum film welding chamber helium filling apparatus (101) as defined in claim 1, wherein said helium filling nozzle (7) is internally provided with a first helium filling passage (71) for filling helium to the first welding chamber (20) formed by the upper aluminum film (12) and the soft bag (14) and a second helium filling passage (72) for filling helium to the second welding chamber (21) formed by the lower aluminum film (13) and the soft bag (14).
3. The helium filling apparatus (101) for aluminum film welding chamber according to claim 2, wherein the first helium filling channel (71) and the second helium filling channel (72) are disposed in parallel.
4. The helium filling apparatus (101) for aluminum film welding chamber according to claim 2, wherein said helium filling nozzle (7) is further provided with a receiving groove (73) between said first helium filling channel (71) and said second helium filling channel (72) for receiving the edge of the soft bag (14).
5. Helium filling apparatus (101) for aluminum film welding chamber according to claim 4, wherein the end of said helium filling nozzle (7) is provided with a guide port (74) communicating with said receiving groove (73) for allowing the edge of the soft bag (14) to enter said receiving groove (73).
6. Helium-filling device (101) for aluminum film welding chambers as in claim 5, characterized in that said pilot port (74) is embodied as a bell mouth.
7. The helium filling device (101) for the aluminum film welding chamber as claimed in any one of claims 1 to 6, further comprising a transverse driver (11) fixedly connected to the helium filling driver (9) for driving the helium filling driver (9) to move in a horizontal direction.
8. The helium filling device (101) for the aluminum film welding chamber according to claim 7, wherein the upper adsorption component comprises an upper sucker (3) and an aluminum film adsorption upper driver (1) fixedly connected with the upper sucker (3) through an upper fixed block (2); the lower adsorption component comprises a lower sucker (6) and an aluminum adsorption film lower driver (4) fixedly connected with the lower sucker (6) through a lower fixing block (5).
9. A powder-liquid double-chamber bag production apparatus, characterized by comprising a helium charging device (101) of the aluminum film welding chamber according to any one of claims 1 to 8.
10. A powder-liquid double chamber bag production apparatus according to claim 9, further comprising an air-extracting device (102) provided on a side of the soft bag (14) away from the helium-filling device (101) for extracting air from a welding chamber formed by the soft bag (14) and the aluminum film when the helium-filling device (101) is filled with helium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122641.6U CN215243212U (en) | 2021-05-24 | 2021-05-24 | Powder-liquid double-chamber bag production equipment and helium filling device of aluminum film welding chamber thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122641.6U CN215243212U (en) | 2021-05-24 | 2021-05-24 | Powder-liquid double-chamber bag production equipment and helium filling device of aluminum film welding chamber thereof |
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| CN215243212U true CN215243212U (en) | 2021-12-21 |
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| CN202121122641.6U Active CN215243212U (en) | 2021-05-24 | 2021-05-24 | Powder-liquid double-chamber bag production equipment and helium filling device of aluminum film welding chamber thereof |
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| CN (1) | CN215243212U (en) |
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2021
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