Nitrocellulose membrane preparation device

Abstract

The utility model relates to the technical field of nitrocellulose membrane preparation devices, and provides a nitrocellulose membrane preparation device which at least comprises a rack; the unwinding roller is used for placing a membrane material; the guide roller set is arranged on the rack, comprises a plurality of guide rollers arranged at intervals and is used for conveying the membrane material to a slitting station; and the first dust removal roller is arranged on the rack in a mode of rotating around the axis of the first dust removal roller, the first dust removal roller is located between the two guide rollers in the conveying direction of the film materials, and the conveyed film materials are wound on the roller surface of the first dust removal roller so as to remove dust of the passing film materials. According to the nitrocellulose membrane preparation device provided by the utility model, the first dust removal roller is arranged between two certain guide rollers, in a membrane material conveying process, when a membrane material passes through the first dust removal roller, the first dust removal roller rotates, and dust impurities or particulate matters on one surface, which is in contact with the first dust removal roller, of the membrane material are stuck by the first dust removal roller; and therefore, the surface of the membrane material is cleaner, and the subsequent membrane forming quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrocellulose membrane preparation devices, in particular to a nitrocellulose membrane preparation device. Background Art

[0002] Lateral flow nitrocellulose membrane is formed by solvent evaporation. First, a high molecular weight polymer is dissolved in a solvent to form a membrane slurry. The membrane slurry is then evenly coated on a moving stainless steel belt. The solvent evaporates in a controlled environment to form a membrane. An appropriate amount of wetting agent is then added. Finally, the membrane is dried and formed, and then rolled up to obtain a roll. Finally, it is cut as needed to obtain a finished product. The prior art provides a nitrocellulose membrane preparation device, which is provided with a material receiving mechanism. Using an adjustable lifting slide, the operator can raise and lower the winding roller through a screw rod. When the winding roller is located at the top of the frame, it cooperates with a number of cutting blades and a number of separators to realize small roll operation. Finally, the cross-cutting mechanism completes the quantitative cutting. When the winding roller is located at the bottom of the frame, the winding roller serves as a feed roller. In conjunction with the cross-cutting mechanism and the longitudinal cutting mechanism, it can realize sheet operation. The two cutting methods are unified on a film cutting machine, which is convenient to switch and use, and reduces production and maintenance costs. However, lateral flow nitrocellulose membranes are prone to generate dust during the production process. If the generated dust or debris is not handled, the quality of subsequent membrane formation will be affected. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is that the lateral flow nitrocellulose membrane in the existing technology is prone to generate dust during the production process. If the generated dust or debris is not processed, it will affect the quality of subsequent film formation, thereby providing a nitrocellulose membrane preparation device.

[0004] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0005] The utility model provides a nitrocellulose membrane preparation device, which at least comprises: a frame; a reel for placing a membrane material; a guide roller group, which is arranged on the frame and comprises a plurality of guide rollers arranged at intervals, and is used to convey the membrane material to a slitting station; a first dust removal roller, which is rotatably arranged on the frame around its own axis, and the first dust removal roller is located between two of the guide rollers along the conveying direction of the membrane material, and the membrane material being conveyed contacts the roller surface of the first dust removal roller to remove dust from the passing membrane material.

[0006] Furthermore, along the conveying direction of the film material and in order of distance from the unwinding roller from near to far, the guide roller group includes a first guide roller, a second guide roller and a third guide roller; the first dust removal roller is located between the second guide roller and the third guide roller.

[0007] Furthermore, the nitrocellulose membrane preparation device also includes a second dust removal roller, which is rotatably arranged on the frame around its own axis. A first preset gap is left between the second dust removal roller and the first dust removal roller. When the membrane material passes through the first preset gap, the first dust removal roller removes dust from the front side of the membrane material and the second dust removal roller removes dust from the back side of the membrane material.

[0008] Furthermore, the nitrocellulose membrane preparation device also includes a slitting roller group and a winding roller group; the slitting roller group is arranged on the frame for slitting the transported membrane material; the winding roller group is arranged on the frame for winding the slit membrane material.

[0009] Furthermore, the nitrocellulose membrane preparation device also includes a fan, which is arranged on the frame, and the air outlet of the fan is directed toward the slitting roller group to blow away debris on the surface of the membrane material after slitting.

[0010] Furthermore, the fan is an ion dust removal fan, which blows out ion wind to remove static electricity and dust from the cut film materials.

[0011] Furthermore, the slitting roller group includes a slitting bottom roller and a knife roller, and a second preset gap is left between the slitting bottom roller and the knife roller. When the film passes through the second preset gap, it is slit into several sections along the width direction of the film.

[0012] Furthermore, the winding roller group includes a first winding roller and a second winding roller; the first winding roller is used to wind up a portion of the slit film material; the second winding roller is used to wind up the remaining slit film material.

[0013] The technical solution of this utility model has the following advantages:

[0014] The utility model provides a nitrocellulose membrane preparation device, in which a first dust removal roller is arranged between two guide rollers. During the film material transportation, when the film material passes through the first dust removal roller, the first dust removal roller rotates, and the dust or particulate matter on the side of the film material that contacts the first dust removal roller is stuck to the first dust removal roller, thereby making the surface of the film material cleaner, which is beneficial to improving the quality of subsequent film formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of a nitrocellulose membrane preparation device in an embodiment of the present invention.

[0017] Description of reference numerals:

[0018] 1. Frame; 2. Unwinding roller; 3. First guide roller; 4. Second guide roller; 5. Third guide roller; 6. First dust removal roller; 7. Second dust removal roller; 8. Slitting bottom roller; 9. Knife roller; 10. First winding roller; 11. Second winding roller; 12. Ion dust removal fan; 13. Film material. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figure 1As shown, this embodiment provides a nitrocellulose membrane preparation device, which at least includes: a frame 1; a reel 2 for placing a membrane material 13; a guide roller group, which is arranged on the frame 1 and includes a plurality of guide rollers arranged at intervals. For example, three guide rollers or more can be set as needed. These guide rollers straighten the membrane material 13 on the reel 2, reverse the direction, and then convey the membrane material 13 to the subsequent slitting station; a first dust removal roller 6, which is rotatably arranged on the frame 1 around its own axis, and the first dust removal roller 6 is located between two of the guide rollers along the conveying direction of the membrane material 13. For example, when there are three guide rollers, the first dust removal roller 6 can be between the first two guide rollers, and the first dust removal roller 6 can also be located between the last two guide rollers; the membrane material 13 being conveyed contacts the roller surface of the first dust removal roller 6. When the membrane material 13 passes through the first dust removal roller 6, the first dust removal roller 6 rotates to remove dust from the surface of the membrane material 13.

[0024] The nitrocellulose membrane preparation device provided in this embodiment is provided with a first dust removal roller 6 between two guide rollers. During the transportation of the membrane material 13, when the membrane material 13 passes through the first dust removal roller 6, the dust or particulate matter on the side of the membrane material 13 in contact with the first dust removal roller 6 is stuck to the first dust removal roller 6, thereby making the surface of the membrane material 13 cleaner, which is beneficial to improving the quality of subsequent film formation.

[0025] Among them, the guide roller group includes a first guide roller 3, a second guide roller 4 and a third guide roller 5 along the conveying direction of the film material 13 and in order of distance from the unwinding roller 2 from near to far; the first dust removal roller 6 is located between the second guide roller 4 and the third guide roller 5.

[0026] The nitrocellulose membrane preparation device further includes a second dust removal roller 7, which is rotatably mounted on the frame 1 about its own axis. A first preset gap is provided between the second dust removal roller 7 and the first dust removal roller 6. When the membrane 13 passes through the first preset gap, the first dust removal roller 6 removes dust from the front side of the membrane 13, while the second dust removal roller 7 removes dust from the back side of the membrane 13. For example, both the first dust removal roller 6 and the second dust removal roller 7 may be consumables and can be replaced after a period of use. With this arrangement, after the membrane 13 passes through the first preset gap, dust can be removed from both the front and back sides of the membrane 13 simultaneously, thereby improving dust removal efficiency.

[0027] The nitrocellulose membrane preparation device further includes a slitting roller assembly and a winding roller assembly; the slitting roller assembly is disposed on the frame 1 and is used to slit the conveyed film material 13; the winding roller assembly is disposed on the frame 1 and is used to wind up the slit film material 13. For example, the slitting roller assembly may include a slitting bottom roller 8 and a knife roller 9, with the slitting bottom roller 8 positioned at the bottom and the knife roller 9 positioned at the top, with a second preset gap between the slitting bottom roller 8 and the knife roller 9. When the film material 13 passes through the second preset gap, the knife roller 9 and the blades on the slitting bottom roller 8 slit the film material 13 into several sections along the width direction of the film material 13. For example, the winding roller assembly may include a first winding roller 10 and a second winding roller 11; the first winding roller 10 is used to wind up a portion of the slit film material 13; the second winding roller 11 is used to wind up the remaining slit film material 13. For example, the slit films 13 are arranged in sequence along the width direction of the film 13. The films 13 at odd-numbered positions can be wound up by the first winding roller 10, and the films 13 at even-numbered positions can be wound up by the second winding roller 11. In this way, the wound films 13 can be separated and do not interfere with each other.

[0028] Among them, the nitrocellulose membrane preparation device also includes a fan, which is arranged on the frame 1, and the air outlet of the fan is directed toward the slitting roller group. For example, the air outlet of the fan can be directed toward the second preset gap between the slitting bottom roller 8 and the knife roller 9 to blow away the debris on the surface of the membrane material 13 after slitting.

[0029] Preferably, the fan can be an ion dust removal fan 12, which blows ion air to remove static electricity and dust from the cut film material 13. This arrangement not only cleans away debris or debris on the surface of the film material 13, but also removes static electricity on the surface of the film material 13, preventing the static electricity from further attracting dust and debris, thereby ensuring the cleanliness of the surface of the film material 13.

[0030] During use, the film material 13 is unwound through the unwinding roller 2, and the film material 13 is dusted on the first dust removal roller 6 and the second dust removal roller 7 after being transported by the first guide roller 3 and the second guide roller 4. After being transported by the third guide roller 5, it is cut on the knife roller 9 according to different width requirements. At the same time, the ion dust removal fan 12 blows ion air to remove static electricity and dust debris, and finally it is reeled by the first reeling roller 10 and the second reeling roller 11.

[0031] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A nitrocellulose membrane preparation device, characterized in that: At least: Rack (1); An unwinding roller (2) for placing a film material (13); A guide roller group is arranged on the frame (1), comprising a plurality of guide rollers arranged at intervals, and is used for conveying the film material (13) to the slitting station; The first dust removal roller (6) is rotatably arranged on the frame (1) around its own axis, and is located between two of the guide rollers along the conveying direction of the film material (13). The film material (13) being conveyed contacts the roller surface of the first dust removal roller (6) to remove dust from the passing film material (13).

2. The nitrocellulose membrane preparation device according to claim 1, characterized in that: Along the conveying direction of the film material (13) and in order of distance from the unwinding roller (2) from near to far, the guide roller group includes a first guide roller (3), a second guide roller (4) and a third guide roller (5); The first dust removal roller (6) is located between the second guide roller (4) and the third guide roller (5).

3. The nitrocellulose membrane preparation device according to claim 1 or 2, characterized in that: The invention also includes a second dust removal roller (7) which is rotatably arranged on the frame (1) around its own axis, and a first preset gap is left between the second dust removal roller (7) and the first dust removal roller (6). When the film material (13) passes through the first preset gap, the first dust removal roller (6) removes dust from the front side of the film material (13), and the second dust removal roller (7) removes dust from the back side of the film material (13).

4. The nitrocellulose membrane preparation device according to claim 1, characterized in that: It also includes a slitting roller group and a winding roller group; The slitting roller group is arranged on the frame (1) and is used to slit the transported film material (13); The winding roller group is arranged on the frame (1) and is used to wind up the slit film material (13).

5. The nitrocellulose membrane preparation device according to claim 4, characterized in that: It also includes a fan, which is arranged on the frame (1), and the air outlet of the fan is directed toward the slitting roller group to blow away debris on the surface of the film material (13) after slitting.

6. The nitrocellulose membrane preparation device according to claim 5, characterized in that: The fan is an ion dust removal fan (12), and the ion dust removal fan (12) blows out ion wind to remove static electricity and dust from the cut film material (13).

7. The nitrocellulose membrane preparation device according to claim 4, characterized in that: The slitting roller group comprises a slitting bottom roller (8) and a knife roller (9), a second preset gap is left between the slitting bottom roller (8) and the knife roller (9), and when the film material (13) passes through the second preset gap, it is slit into several sections along the width direction of the film material (13).

8. The nitrocellulose membrane preparation device according to claim 7, characterized in that: The winding roller group comprises a first winding roller (10) and a second winding roller (11); The first winding roller (10) is used to wind up a portion of the slit film material (13); The second winding roller (11) is used to wind up the remaining slit film material (13).

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