Double-layer non-PVC film separation device and non-PVC film soft bag tail filling production line

Abstract

According to the double-layer non-PVC film separating device and the non-PVC film soft bag tail filling production line, a film separating part extends into the space between double layers of non-PVC films so that the double layers of non-PVC films can be separated, and then the film separating part and a cold pressing part are driven by a driving assembly to be relatively close to each other; according to the technical scheme, the cold pressing part and the film separating part are matched in a concave-convex mode, then a permanent convex face is formed on the non-PVC film through cold pressing, and the convex face formed through cold pressing cannot be eliminated due to ductility compensation of the non-PVC film, the double-layer non-PVC film is separated in advance before the double-layer non-PVC film soft bag is filled through cooperation of the film separating part, the cold pressing part and the driving assembly, and therefore the double-layer non-PVC film soft bag is filled with the double-layer non-PVC film soft bag. And it is guaranteed that the double-layer non-PVC film cannot be bonded again in the process that the double-layer non-PVC film moves to the forming station, so that a filling channel can be completely opened when filling is conducted on the non-PVC film soft bag, and compared with the prior art, the soft bag qualification rate is high, practicability is high, and the method is suitable for wide application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of bag-making equipment, and particularly to a double-layer non-PVC film separating device. In addition, the utility model also relates to a non-PVC film soft bag tail filling production line including the above double-layer non-PVC film separating device. Background Art

[0002] At present, large infusion soft bags are often made of non-PVC films. When filling non-PVC film large infusion soft bags, it is necessary to ensure that the filling channels at the head or tail are fully opened for filling. Once the filling channels are not fully opened, it will hinder the flow of the liquid medicine, reduce the filling efficiency, and make the liquid medicine flow rate unstable, resulting in inaccurate filling volume, possible formation of bubbles, affecting the quality and stability of the liquid medicine, and may also cause leakage or loose sealing during the sealing process, greatly affecting the sealing performance and safety of the soft bag, thus significantly reducing the qualified rate of the soft bag.

[0003] In order to ensure that the filling channels are fully opened during the filling of non-PVC film large infusion soft bags, the non-PVC film is usually separated before filling. For example, Chinese Utility Model Patent CN204250467U discloses a non-PVC film bag-making, filling and sealing production line and a film separating and pre-pressing assembly. For non-PVC film infusion bags filled at non-tube openings, before filling the bag body, the film separating head of the film separating assembly extends into the double-layer film of the bag body, and the hot pressing joint presses the film extending into the film separating head tightly. The hot pressing joint heats the double-layer film of the bag body, causing the film of the bag body to deform to a certain extent due to heat. Therefore, during subsequent liquid filling, the filling parts of the double-layer film can be accurately opened, improving the success rate of opening the double-layer film and the stability of opening the filling port of non-PVC film infusion soft bags filled at non-tube openings.

[0004] However, in the non-PVC film soft bag tail filling production line, even after the non-PVC film is thermally deformed by the film separating and pre-pressing assembly, the non-PVC film still needs to be moved to the forming station by the film pulling mechanism for forming. During the film pulling process, the non-PVC film is always in a tightened state, and this state can only be released after the forming die presses the non-PVC film. Due to the very good ductility of the non-PVC film, during this process, the thermal deformation of the non-PVC film may be eliminated due to the compensation of the ductility of the non-PVC film, causing the two layers of non-PVC film to adhere together again, and the filling channel cannot be fully opened during filling, resulting in a low qualified rate of the soft bag. Summary of the Utility Model

[0005] The utility model provides a double-layer non-PVC film separating device and a non-PVC film soft bag tail filling production line to solve the technical problem that in the existing non-PVC film soft bag tail filling production line, the filling channel cannot be fully opened during filling, resulting in a low qualified rate of the soft bag.

[0006] According to one aspect of the present utility model, a double-layer non-PVC film separating device is provided, which includes a film separating part for extending between the double-layer non-PVC films to separate the double-layer non-PVC films, a cold pressing part disposed on the side of the film separating part and for engaging with the film separating part in a concave-convex manner to form a convex surface on the non-PVC film, and a driving assembly for driving the film separating part and the cold pressing part to approach each other relatively. An uneven structure one is disposed on the side of the film separating part facing the cold pressing part, and an uneven structure two for engaging with the uneven structure one in a concave-convex manner is disposed on the end of the cold pressing part facing the film separating part.

[0007] As a further improvement of the above technical solution:

[0008] Further, the separating device further includes a guiding shaft, the film separating part and the cold pressing part are sleeved on the guiding shaft, and an elastic member for resetting after the concave-convex engagement of the film separating part and the cold pressing part is provided between the film separating part and the cold pressing part.

[0009] Further, there are two cold pressing parts, and the two cold pressing parts are respectively arranged at opposite ends of the film separating part and sleeved on the guiding shaft.

[0010] Further, anti-disengagement parts for preventing the cold pressing part and / or the film separating part from axially disengaging from the guiding shaft are disposed at both axial ends of the guiding shaft.

[0011] Further, the driving end of the driving assembly abuts against the film separating part to drive the film separating part to approach the cold pressing part; or the driving end of the driving assembly abuts against the cold pressing part and is used to drive the cold pressing part to approach the film separating part; or the driving assembly has two driving ends, and the two driving ends respectively abut against the film separating part and the cold pressing part and are used to drive the film separating part and the cold pressing part to approach each other.

[0012] Further, the preset separating device further includes a mounting body, the mounting body is provided with a pre-pressing cavity, the film separating part is connected to the mounting body and is suspended in the preset cavity, the driving assembly is disposed on the mounting body and the driving end is disposed facing the film separating part, and the cold pressing part is disposed on the driving end of the driving assembly.

[0013] Further, the driving assembly is one of an electric push rod, an oil cylinder and a cylinder.

[0014] Further, there are two driving assemblies, the two driving assemblies are respectively arranged at opposite ends of the film separating part, and the cold pressing part and the driving assembly are arranged in one-to-one correspondence.

[0015] Further, there are multiple uneven structure ones, the multiple uneven structure ones are arranged in an array on the side of the film separating part facing the cold pressing part, and the uneven structure two and the uneven structure one are arranged in one-to-one correspondence.

[0016] According to another aspect of the present utility model, a non-PVC film soft bag tail filling production line is further provided, which includes the above double-layer non-PVC film separating device.

[0017] The utility model has the following beneficial effects:

[0018] For the double-layer non-PVC film separating device of the utility model, before filling the non-PVC film soft bag, the film separating part is inserted between the double-layer non-PVC films to separate the double-layer non-PVC films, and then the driving component drives the film separating part and the cold pressing part to approach relatively, so that the cold pressing part and the film separating part are in concave-convex cooperation, and then a permanent convex surface is formed on the non-PVC film through cold pressing. And the convex surface formed by cold pressing cannot be eliminated due to the compensation of the ductility of the non-PVC film. Therefore, it can be ensured that when filling the non-PVC film soft bag, the filling channel has been opened, and then it is ensured to the greatest extent that the filling channel on the non-PVC film soft bag is completely opened, thereby greatly improving the qualified rate of the soft bag. This solution cooperates with each other through the film separating part, the cold pressing part and the driving component, separates the double-layer non-PVC films in advance before filling the double-layer non-PVC film soft bag, and ensures that the double-layer non-PVC films will not be bonded again during the process of moving the double-layer non-PVC films to the forming station, so that the filling channel when filling the non-PVC film soft bag can be completely opened. Compared with the prior art, the qualified rate of the soft bag is high, the practicability is strong, and it is suitable for wide popularization and application.

[0019] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the utility model. Description of the Drawings

[0020] The drawings constituting a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0021] Figure 1 is a schematic structural diagram of the double-layer non-PVC film separating device of the preferred embodiment of the utility model;

[0022] Figure 2 is a schematic structural diagram of the double-layer non-PVC film separating device of the first preferred embodiment of the utility model;

[0023] Figure 3 is Figure 2 a partial schematic structural diagram of the double-layer non-PVC film separating device shown;

[0024] Figure 4 is a schematic structural diagram of the double-layer non-PVC film separating device of the second preferred embodiment of the utility model;

[0025] Figure 5 is a partial schematic structural diagram of the non-PVC film soft bag tail filling production line of the preferred embodiment of the utility model.

[0026] Legend Explanation:

[0027] 100, film separation part; 110, first concavo-convex structure; 200, cold pressing part; 210, second concavo-convex structure; 300, driving component; 400, guiding shaft; 410, anti-disengagement part; 500, elastic part; 600, mounting body. Detailed implementation manners

[0028] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. However, the present utility model can be implemented in many different ways defined and covered by the following.

[0029] Figure 1 It is a schematic structural diagram of a double-layer non-PVC film separation device according to a preferred embodiment of the present utility model; Figure 2 It is a schematic structural diagram of a double-layer non-PVC film separation device according to a first preferred embodiment of the present utility model; Figure 3 is Figure 2 A partial schematic structural diagram of the double-layer non-PVC film separation device shown; Figure 4 It is a schematic structural diagram of a double-layer non-PVC film separation device according to a second preferred embodiment of the present utility model; Figure 5 It is a partial schematic structural diagram of a non-PVC film soft bag tail filling production line according to a preferred embodiment of the present utility model.

[0030] Such as Figures 1-4As shown in the figure, the double-layer non-PVC film separation device of this embodiment includes a film separating part 100 for extending between the double-layer non-PVC films to separate the double-layer non-PVC films, a cold pressing part 200 disposed on the side of the film separating part 100 for engaging with the film separating part 100 in a concave-convex manner to form a convex surface on the non-PVC film, and a driving assembly 300 for driving the film separating part 100 and the cold pressing part 200 to approach each other relatively. An uneven structure one 110 is disposed on the side of the film separating part 100 facing the cold pressing part 200, and an uneven structure two 210 for engaging with the uneven structure one 110 in a concave-convex manner is disposed on the end of the cold pressing part 200 facing the film separating part 100. Specifically, for the double-layer non-PVC film separation device of the present utility model, before the non-PVC film soft bag is filled, the film separating part 100 is extended between the double-layer non-PVC films to separate the double-layer non-PVC films, and then the driving assembly 300 drives the film separating part 100 and the cold pressing part 200 to approach each other relatively, so that the cold pressing part 200 engages with the film separating part 100 in a concave-convex manner and a permanent convex surface is formed on the non-PVC film by cold pressing. And the convex surface formed by cold pressing cannot be eliminated due to the compensation of the ductility of the non-PVC film. Therefore, it can be ensured that when the non-PVC film soft bag is filled, the filling channel has been opened, and thus it is ensured to the greatest extent that the filling channel on the non-PVC film soft bag is completely opened, thereby greatly improving the qualification rate of the soft bag. This solution cooperates with each other through the film separating part 100, the cold pressing part 200 and the driving assembly 300 to separate the double-layer non-PVC films in advance before the double-layer non-PVC film soft bag is filled, and ensure that the double-layer non-PVC films will not be bonded again during the process of moving the double-layer non-PVC films to the forming station, so that the filling channel during the filling of the non-PVC film soft bag can be completely opened. Compared with the prior art, the qualification rate of the soft bag is high, the practicability is strong, and it is suitable for wide promotion and application. It should be understood that the driving assembly 300 driving the film separating part 100 and the cold pressing part 200 to approach each other relatively can be that the driving assembly 300 abuts against the film separating part 100 to drive the film separating part 100 to approach the cold pressing part 200, or the driving assembly 300 abuts against the cold pressing part 200 to drive the cold pressing part 200 to approach the film separating part 100, or the driving assembly 300 abuts against the film separating part 100 and the cold pressing part 200 respectively to drive the cold pressing part 200 and the film separating part 100 to approach each other simultaneously. It should be understood that during the filling of the non-PVC film soft bag, it is also necessary to completely adsorb and open the filling channel through components such as a vacuum chuck. It should be understood that the non-PVC film soft bag is prepared from double-layer non-PVC films. It should be understood that when the uneven structure one 110 is a groove, the uneven structure two 210 is a boss; when the uneven structure one 110 is a boss, the uneven structure two 210 is a groove. It should be understood that the non-PVC film is a material that does not contain polyvinyl chloride (PVC).

[0031] As Figure 2 and Figure 3As shown in the figure, in this embodiment, the separation device further includes a guide shaft 400. The film separating part 100 and the cold pressing part 200 are sleeved on the guide shaft 400, and an elastic member 500 for resetting after the concave-convex matching of the film separating part 100 and the cold pressing part 200 is provided between the film separating part 100 and the cold pressing part 200. Specifically, through the guide shaft 400, the film separating part 100 and the cold pressing part 200 move relative to each other along the axial direction of the guide shaft 400. After the driving assembly 300 drives the film separating part 100 and the cold pressing part 200 to move closer to each other for concave-convex matching, the elastic member 500 enables the film separating part 100 and the cold pressing part 200 to automatically reset, so as to separate the double-layer non-PVC film at the filling part of the next soft bag. Optionally, the elastic member 500 is a compression spring. Optionally, in one embodiment, the preset separation device is arranged on the printing base plate at the printing station of the non-PVC film soft bag tail filling production line, and the driving assembly 300 is a printing plate mounting plate. When hot transfer printing is performed at the printing station, the printing plate mounting plate acts downward on the cold pressing plate, so that the cold pressing plate and the film separating part 100 are concave-convexly matched to form a convex surface on the double-layer non-PVC film, and in this implementation In the example, the driving component 300 does not drive the cold pressing plate and the film separating part 100 to move away from each other for resetting. Therefore, it is necessary to use the elastic member 500 to make the After the concave-convex matching of the film separating part 100 and the cold pressing part 200, they automatically reset.

[0032] In this embodiment, there are two cold pressing parts 200, and the two cold pressing parts 200 are respectively arranged at opposite ends of the film separating part 100 and sleeved on the guide shaft 400. Specifically, the driving assembly 300 drives the two cold pressing parts 200 to approach the film separating part 100 to form convex surfaces on the two layers of non-PVC films respectively, further ensuring that there is a gap in the filling channel before filling the non-PVC film soft bag, so as to ensure that the filling channel is opened during filling, so that the filling channel can be completely opened under the action of the vacuum suction cup. Optionally, in another embodiment, one of the cold pressing parts 200 may be in contact with the driving assembly 300. When the driving assembly 300 works, while driving the cold pressing part 200 to approach the film separating part 100, under the action of the elastic member 500, the film separating part 100 is synchronously driven to approach the other cold pressing part 200.

[0033] Such as Figure 2 and Figure 3As shown in the figure, in this embodiment, anti - detachment portions 410 for preventing the cold - pressing portion 200 and / or the film - separating portion 100 from axially detaching from the guiding shaft 400 are arranged at both axial ends of the guiding shaft 400. Specifically, when there is only one cold - pressing portion 200, the anti - detachment portions 410 at both axial ends of the guiding shaft 400 can respectively prevent the cold - pressing portion 200 and the film - separating portion 100 from axially detaching from the guiding shaft 400. When there are two cold - pressing portions 200, the anti - detachment portions 410 at both axial ends of the guiding shaft 400 can respectively prevent the two cold - pressing portions 200 from detaching from the guiding shaft 400. Optionally, in one embodiment, the axial direction of the guiding shaft 400 is arranged vertically, and the anti - detachment portion 410 is arranged on the upper end portion of the guiding shaft 400. When the guiding shaft 400 is arranged on the printing bottom plate of the printing station, the film - separating portion 100 can be prevented from axially detaching from the guiding shaft 400 by the printing bottom plate.

[0034] As Figure 2 and Figure 3 shown, in this embodiment, the driving end of the driving assembly 300 abuts against the film - separating portion 100 to drive the film - separating portion 100 to approach the cold - pressing portion 200. Specifically, when the driving assembly 300 works, it drives the film - separating portion 100 to approach the cold - pressing portion 200, so that the film - separating portion 100 and the cold - pressing portion 200 are in concave - convex fit.

[0035] As Figure 2 and Figure 3 shown, in this embodiment, the driving end of the driving assembly 300 abuts against the cold - pressing portion 200 and is used to drive the cold - pressing portion 200 to approach the film - separating portion 100. Specifically, when the driving assembly 300 works, it drives the cold - pressing portion 200 to approach the film - separating portion 100, so that the cold - pressing portion 200 and the film - separating portion 100 are in concave - convex fit.

[0036] In this embodiment, the driving assembly 300 is provided with two driving ends, and the two driving ends respectively abut against the film - separating portion 100 and the cold - pressing portion 200 and are used to drive the film - separating portion 100 and the cold - pressing portion 200 to approach each other. Specifically, when the driving assembly 300 works, it drives the film - separating portion 100 and the cold - pressing portion 200 to approach each other respectively through the two driving ends, so that the cold - pressing portion 200 and the film - separating portion 100 are in concave - convex fit.

[0037] As Figure 4As shown in the figure, in this embodiment, the preset separation device further includes an installation main body 600. The installation main body 600 is provided with a pre-pressing cavity. The film separating part 100 is connected to the installation main body 600 and is suspended in the preset cavity. The driving assembly 300 is arranged on the installation main body 600 and the driving end is arranged towards the film separating part 100. The cold pressing part 200 is arranged on the driving end of the driving assembly 300. Specifically, the driving assembly 300 is installed on the installation main body 600, and the film separating part 100 is installed in the pre-pressing cavity of the installation main body 600. When the film separating part 100 separates the double-layer non-PVC film, by the operation of the driving assembly 300, the cold pressing part 200 is driven to approach the film separating part 100, so as to form a convex surface through concave-convex cooperation.

[0038] In this embodiment, the driving assembly 300 is one of an electric push rod, an oil cylinder and a cylinder. It should be understood that the specific structures of the electric push rod, the oil cylinder and the cylinder are well-known technologies to those skilled in the art.

[0039] As Figure 4 shown in the figure, in this embodiment, there are two driving assemblies 300. The two driving assemblies 300 are respectively arranged at opposite ends of the film separating part 100, and the cold pressing part 200 and the driving assembly 300 are arranged in one-to-one correspondence. Specifically, the two cold pressing parts 200 are driven by the two driving assemblies 300 to move towards the film separating part 100 simultaneously, so as to form convex surfaces on both layers of non-PVC films.

[0040] As Figures 2-4 shown in the figure, in this embodiment, there are multiple first concave-convex structures 110. The multiple first concave-convex structures 110 are arranged in an array on the side of the film separating part 100 facing the cold pressing part 200, and the second concave-convex structures 210 and the first concave-convex structures 110 are arranged in one-to-one correspondence. Specifically, through the cooperation of the multiple first concave-convex structures 110 and the multiple second concave-convex structures 210, multiple convex surfaces are formed on one layer of non-PVC film, further ensuring that there is a gap between the double-layer non-PVC films.

[0041] As Figure 5 shown in the figure, the non-PVC film soft bag tail filling production line in this embodiment includes the above-mentioned double-layer non-PVC film separation device. Specifically, by adopting the above-mentioned double-layer non-PVC film separation device in the non-PVC film soft bag tail filling production line, a permanent convex surface deformation is formed on the double-layer non-PVC film before filling, so as to ensure that the tail filling channel of the non-PVC film soft bag has been opened, and further ensure that when the tail filling channel is adsorbed and opened by a vacuum chuck later, it can be completely opened.

[0042] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-layer non-PVC membrane separation device, characterized in that, It includes a film separating part (100) for extending between the double-layer non-PVC films to separate the double-layer non-PVC films, a cold pressing part (200) arranged on the side of the film separating part (100) for engaging with the film separating part (100) in a concave-convex manner to form a convex surface on the non-PVC film, and a driving component (300) for driving the film separating part (100) and the cold pressing part (200) to approach each other relatively. An uneven structure one (110) is arranged on the side of the film separating part (100) facing the cold pressing part (200), and an uneven structure two (210) for engaging with the uneven structure one (110) in a concave-convex manner is arranged on the end of the cold pressing part (200) facing the film separating part (100).

2. The double-layer non-PVC membrane separation device according to claim 1, wherein, The separating device further includes a guiding shaft (400). The film separating part (100) and the cold pressing part (200) are sleeved on the guiding shaft (400). An elastic member (500) for resetting after the concave-convex engagement of the film separating part (100) and the cold pressing part (200) is arranged between the film separating part (100) and the cold pressing part (200).

3. The double-layer non-PVC membrane separation device according to claim 2, wherein There are two cold pressing parts (200), and the two cold pressing parts (200) are respectively arranged at the opposite ends of the film separating part (100) and sleeved on the guiding shaft (400).

4. The double-layer non-PVC membrane separation device according to claim 2, characterized in that, Anti-disengagement parts (410) for preventing the cold pressing part (200) and / or the film separating part (100) from axially disengaging from the guiding shaft (400) are arranged at the axial two ends of the guiding shaft (400).

5. The double-layer non-PVC membrane separation device according to claim 1, wherein, The driving end of the driving component (300) abuts against the film separating part (100) to drive the film separating part (100) to approach the cold pressing part (200); or The driving end of the driving component (300) abuts against the cold pressing part (200) and is used to drive the cold pressing part (200) to approach the film separating part (100); or The driving component (300) has two driving ends, and the two driving ends respectively abut against the film separating part (100) and the cold pressing part (200) and are used to drive the film separating part (100) and the cold pressing part (200) to approach each other.

6. The double-layer non-PVC membrane separation device according to claim 1, characterized in that, The preset separating device further includes a mounting body (600). The mounting body (600) is provided with a pre-pressing cavity. The film separating part (100) is connected to the mounting body (600) and is suspended in the preset cavity. The driving component (300) is arranged on the mounting body (600) and the driving end is arranged facing the film separating part (100), and the cold pressing part (200) is arranged on the driving end of the driving component (300).

7. The double-layer non-PVC membrane separation device according to claim 6, wherein, The driving component (300) is one of an electric push rod, an oil cylinder and a cylinder.

8. The double-layer non-PVC membrane separation device according to claim 6, wherein There are two driving components (300), and the two driving components (300) are respectively arranged at the opposite ends of the film separating part (100), and the cold pressing part (200) and the driving component (300) are arranged in one-to-one correspondence.

9. The double-layer non-PVC membrane separation device according to any one of claims 1-8, characterized in that There are multiple uneven structures one (110), and the multiple uneven structures one (110) are arranged in an array on the side of the film separating part (100) facing the cold pressing part (200), and the uneven structure two (210) and the uneven structure one (110) are arranged in one-to-one correspondence.

10. A non-PVC film soft bag tail filling production line, characterized in that, It includes the double-layer non-PVC film separating device according to any one of claims 1-9.

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