CN219620597U - Prevent that film sticks up limit and roll up core, roller and film apparatus for producing - Google Patents
Prevent that film sticks up limit and roll up core, roller and film apparatus for producing Download PDFInfo
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- CN219620597U CN219620597U CN202320808796.8U CN202320808796U CN219620597U CN 219620597 U CN219620597 U CN 219620597U CN 202320808796 U CN202320808796 U CN 202320808796U CN 219620597 U CN219620597 U CN 219620597U
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Abstract
The utility model discloses a film edge-curling prevention winding core, a winding roller and a film production device, which comprise a cylindrical body for winding a film, wherein the cylindrical body comprises a winding straight section and radial contraction sections at two ends of the winding straight section, the outer diameter of a first end of the radial contraction section, which is close to the winding straight section, is not larger than the outer diameter of the winding straight section, and the outer diameter of a second end of the radial contraction section is smaller than the outer diameter of the winding straight section. Compared with the prior art, the radial contraction section of the utility model is not in contact with the film, namely the edge of the film is suspended, and further the trend of radial contraction can be formed at the edge of the film by fully utilizing the self tension of the film, thereby overcoming or relieving the edge warping condition of the film, ensuring the film coiling quality and improving the integral flatness and quality of the film.
Description
Technical Field
The utility model relates to the technical field of conductive film production, in particular to a film edge-curling-preventing winding core, a winding roller and a film production device.
Background
The conductive metal film is a material with various good performances, and is widely applied to a battery as a positive electrode current collector or a negative electrode current collector.
Winding the conductive metal film into a roll after the production of the conductive metal film is completed, and then performing subsequent cutting and other working procedures, wherein the edge of the conductive metal film often has a local bulge phenomenon in the winding and rolling process, and the phenomenon is also called edge lifting; the raised edges can influence the flatness and quality consistency of the whole guiding metal film, and particularly the raised edges with larger heights can influence the product performance of the conductive metal film.
The main countermeasure in the industry at present is to measure the edge-curling area, if the edge-curling value exceeds the requirement, the cut part of the conductive metal film is discarded as an unqualified product, which undoubtedly causes waste, and the production cost is increased, so that how to effectively solve the problem of edge-curling of the conductive metal film is a difficult problem to be solved in the industry.
Disclosure of Invention
In order to solve the problem that the edge of the conductive metal film often has local bulge in the winding process of the conductive metal film, which is also called edge curling, the edge curling can influence the flatness and quality consistency of the whole guide metal film, the utility model provides an edge curling core, a roller and a film production device for preventing the edge curling of the film.
The technical scheme of the utility model is as follows:
the utility model provides a prevent that film sticks up limit and roll up core, includes the tube-shape body that is used for winding the film, the tube-shape body includes the winding straight section, and the radial shrink section at the both ends of winding straight section, the external diameter that radial shrink section is close to the first end of winding straight section is not more than the external diameter of winding straight section, the external diameter of second end is less than the external diameter of winding straight section.
According to the film edge-curling prevention winding core, the radial contraction section is in a straight cylinder shape, and the outer diameter of the radial contraction section is smaller than that of the winding straight section.
According to the film edge-curling prevention winding core, the radial contraction section is conical, the outer diameter of the first end of the radial contraction section is equal to the outer diameter of the winding straight section, and the outer diameter of the second end of the radial contraction section is smaller than the outer diameter of the winding straight section.
Further, the difference between the radius of the first end and the radius of the second end of the radial contraction section is 1/5 to 3/5 of the wall thickness of the cylindrical body, and the length of the radial contraction section is 0.8 to 2 times of the wall thickness of the cylindrical body.
Further, the difference between the radius of the first end and the radius of the second end of the radial contraction section is 1/2 of the wall thickness of the cylindrical body.
Further, the coiled straight section is integrally formed with the radially contracted section.
Further, the coiled straight section and the radially contracted section are formed by turning or milling.
Further, the coiled straight section is detachably connected with the radially contracted section.
The film edge-curling prevention winding core is characterized in that the winding straight section is connected with the radial contraction section in an inserting mode, a plug is arranged at the first end of the radial contraction section, and a jack clamped with the plug is arranged at one end of the winding straight section.
Further, a magnetic suction seat is arranged on the plug, and a magnetic suction head which is connected with the magnetic suction seat in a magnetic suction manner is arranged in the jack.
Further, the cylindrical body is a nonmetallic material.
According to the film edge-curling prevention winding core, the length of the cylindrical body is 300-2000 mm.
A roll for preventing edge warping of a film comprises the roll core for preventing edge warping of the film.
The film production device for preventing the edge from being warped comprises the film edge-warping preventing winding core or the film edge-warping preventing winding roller.
The utility model according to the scheme has the beneficial effects that:
1. compared with the prior art, the radial contraction section is not in contact with the film, namely the edge of the film is suspended, and further the trend of radial contraction can be fully utilized at the edge of the film by utilizing the tension of the film, so that the edge warping condition of the film is overcome or lightened, the film rolling quality is ensured, and the integral flatness and quality of the film are improved;
2. the winding straight section can be arranged into a conical section or a stepped shaft section, both the conical section and the stepped shaft section are formed in the radial contraction section, the diameter or the fall of the winding straight section can be changed, the problem of edge warping can be solved by both the two shapes, the processing and the manufacturing are convenient, and the winding straight section can be manufactured through injection molding or through machining;
3. the wall thickness of the cylindrical body is used as a reference to set the relevant conical parameters, so that the structural strength of the whole structure is ensured, and the processing and manufacturing are facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic front view of embodiment 1 of the present utility model;
FIG. 2 is a schematic view showing the internal structure of embodiment 1 of the present utility model;
FIG. 3 is a schematic view showing the internal structure of embodiment 2 of the present utility model;
FIG. 4 is a schematic view showing the internal structure of embodiment 3 of the present utility model;
FIG. 5 is an enlarged view of the structure of FIG. 2 at A;
fig. 6 is an enlarged view of the structure at B in fig. 2.
Wherein, each reference sign in the figure: 100. a cylindrical body; 1. winding the straight section; 101. a jack; 2. a radially contracting section; 201. a plug; 3. a magnetic suction seat; 4. a magnetic suction head.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one, unless specifically defined otherwise.
Example 1
As shown in fig. 1, 2, 5 and 6, an edge-curling preventing core for a film according to an embodiment of the present utility model includes a cylindrical body 100 for winding a film, the cylindrical body 100 includes a winding straight section 1, and radial shrinkage sections 2 at both ends of the winding straight section 1, an outer diameter of the radial shrinkage sections 2 near a first end of the winding straight section 1 is not greater than an outer diameter of the winding straight section 1, an outer diameter of a second end is smaller than an outer diameter of the winding straight section 1, and an inner diameter of the radial shrinkage sections 2 is optimally not smaller than an inner diameter of the winding straight section 1.
When the conductive film winding device is used, the winding core is fixedly arranged on the conductive metal film winding roller, namely the cylindrical body 100 is fixed on the conductive metal film winding roller, the conductive film can be wound on the cylindrical body 100 by rotating the winding roller, the middle section of the cylindrical body 100 is a winding straight section 1, the outer diameters of the sections are the same, the conductive film can be smoothly wound up along the middle part of the width direction, and the outer diameters of the two ends of the cylindrical body 100 are smaller than the outer diameter of the middle section due to the fact that the two ends of the cylindrical body 100 are radial contraction sections 2.
In this example, by arranging the radial contraction sections 2 at two ends of the cylindrical body 100, the edge of the conductive film is suspended during winding, and radially contracts under the action of the tension of the conductive film, so that the edge warping condition of the conductive film during winding is improved, the winding quality of the conductive film is ensured, and the bad loss is reduced.
In practical application, the outer diameter of the radial contraction section 2 is fixed, or can be changed into a variable shape, and specifically, the radial contraction section can be inflatable variable diameter, mechanical variable diameter, elastic variable diameter and the like.
As shown in fig. 5, in a preferred embodiment, the radially contracted section 2 is tapered, the outer diameter of the first end of the radially contracted section 2 being equal to the outer diameter of the winding straight section 1, and the outer diameter of the second end of the radially contracted section 2 being smaller than the outer diameter of the winding straight section 1. The difference D1 between the first end radius and the second end radius of the radially contracted section 2 is 1/5 to 3/5 of the wall thickness of the tubular body 100, preferably, the difference D1 between the first end radius and the second end radius of the radially contracted section 2 is 1/2 of the wall thickness of the tubular body 100, the difference D1 between the first end radius and the second end radius of the radially contracted section 2 is generally not less than 1mm, and the length D2 of the radially contracted section 2 is 0.8 to 2 times, such as 0.8 times, 1 times, 1.5 times, etc., the wall thickness of the tubular body 100. By providing the radially constricted section 2 with a conical shape, the manufacturing is facilitated because the conical shape is a regular structure. The radial contraction sections 2 at the two ends of the winding straight section 1 do not need to be symmetrical, and the symmetrical radial contraction sections 2 have better winding effect and are easier to process. In addition, the wall thickness of the cylindrical body 100 is used as a reference to set the relevant parameters of the taper, so that the structural strength of the whole structure is ensured, and the processing and the manufacturing are facilitated.
As shown in fig. 6, in a preferred embodiment, the winding straight section 1 is connected with the radial contraction section 2 in a plugging manner, a plug 201 is provided at a first end of the radial contraction section 2, and the winding straight section 1 is provided with a jack 101 engaged with the plug 201 at one end of the radial contraction section 2. The plug 201 is provided with a magnetic attraction seat 3, and the jack 101 is provided with a magnetic suction head 4 which is magnetically connected with the magnetic attraction seat 3. When the winding straight section 1 and the radial contraction section 2 are connected, the plug 201 is inserted into the insertion hole 101, and at the moment, the magnetic attraction seat 3 and the magnetic attraction head 4 are magnetically attracted, so that the winding straight section 1 and the radial contraction section 2 are connected. When the plug 201 is separated, the plug is pulled out of the jack 101, the magnetic attraction seat 3 and the magnetic attraction head 4 are separated, and the winding straight section 1 and the radial contraction section 2 are disconnected. Therefore, the radial contraction section 2 and the winding straight section 1 are convenient to disassemble and assemble, and the two parts are convenient to replace, so that the winding machine is suitable for winding conductive films with different widths and different types. The length of the whole cylindrical body 100 is generally 300mm to 2000mm, the length of the cylindrical body 100 can be any value in the intervals of 300mm, 500mm, 1000mm, 1050mm, 1075mm, 1100mm, 1500mm, 2000mm and the like, and the conductive film with the width of 300mm to 2000mm can be correspondingly wound.
In practical application, the winding straight section 1 and the radial contraction section 2 can be detachably connected, and in addition to the connection mode, threaded connection can be adopted, for example, the connection ends of the winding straight section 1 and the radial contraction section 2 are respectively provided with internal threads and external threads which are matched with each other, so that the winding straight section 1 and the radial contraction section 2 are connected. Or by fasteners, such as screws, for example, for connecting the coiled straight section 1 and the radially contracted section 2. The removable connection of the winding straight section 1 with the radially contracted section 2 includes, but is not limited to, the connection described above, and is not exhaustive.
In a preferred embodiment, the tubular body 100 is a non-metallic material such as paper, resin, plastic, etc., and is lightweight, structurally strong, and easy to manufacture and use.
Example 2
As shown in fig. 3, the difference from embodiment 1 is that the radially contracted section 2 is a straight cylinder shape, and the outer diameter of the radially contracted section 2 is smaller than the outer diameter of the winding straight section 1. The outer diameters of the straight cylindrical radial contraction sections 2 and the winding straight sections 1 are different to form steps, and the fall between the two steps enables the edge of the conductive film to be in a suspended state, so that the edge of the conductive film can be contracted to a certain extent radially during winding, the edge warping condition is avoided or reduced, and the flatness and quality of the film roll are guaranteed.
In practical application, the shape of the radial contraction section 2 comprises but is not limited to the shapes listed in the embodiment 1 and the embodiment 2, and as long as a certain radial contraction space is ensured on the edge when the conductive film is rolled, the edge warping condition can be improved, so that the whole flatness of the film roll is ensured, and the shapes listed in the embodiment 1 and the embodiment 2 are preferred shapes, and have good effect and are convenient to process.
Example 3
As shown in fig. 4, the difference from embodiment 1 is that the winding straight section 1 is integrally formed with the radially contracted section 2. The winding straight section 1 and the radial shrink section 2 are formed by injection molding or machining, including turning or milling. The integrally formed winding straight section 1 and the radial contraction section 2 are good in integrity, good in structural strength and convenient to manufacture and process.
Example 4
The edge-curling prevention roller comprises the edge-curling prevention winding core for winding the film. The roll in this example can ensure the flatness of the film roll by adopting the roll core.
Example 5
The film production device capable of preventing the edge from being warped comprises the film edge-warping preventing winding core or the film edge-warping preventing winding roller for winding the film. The film production device in this example can ensure the flatness of the film roll by adopting the winding core or the winding roller.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a prevent film perk limit core of rolling up, its characterized in that, including the tube-shape body that is used for coiling film, the tube-shape body includes the winding straight section, and be in the radial shrink section at the both ends of winding straight section, the external diameter that radial shrink section is close to the first end of winding straight section is not greater than the external diameter of winding straight section, the external diameter of second end is less than the external diameter of winding straight section.
2. The film edge-curling prevention core of claim 1, wherein said radially contracted section is straight cylindrical, and the outer diameter of said radially contracted section is smaller than the outer diameter of said straight wound section.
3. The film edge-curling prevention core of claim 1, wherein said radially contracted section is tapered, said radially contracted section first end having an outer diameter equal to an outer diameter of said straight winding section, and said radially contracted section second end having an outer diameter less than an outer diameter of said straight winding section.
4. A film edge curl prevention roll according to claim 3, wherein the difference between the radius of the first end and the radius of the second end of said radially contracted section is 1/5 to 3/5 of the wall thickness of said cylindrical body, and the length of said radially contracted section is 0.8 to 2 times the wall thickness of said cylindrical body.
5. A film edge curl prevention roll core according to any of claims 1-4, wherein said straight winding section is integrally formed with said radially contracted section.
6. A film edge curl prevention roll according to any of claims 1-4, wherein said straight winding section is detachably connected to said radially contracted section.
7. The film edge-curling prevention core of claim 6, wherein said winding straight section is in plug-in connection with said radially contracted section, a first end of said radially contracted section is provided with a plug, and said winding straight section is provided with a socket at one end of said radially contracted section for engagement with said plug.
8. The edge curl prevention roll core of claim 1, wherein said cylindrical body has a length of 300mm to 2000mm.
9. A roll for preventing edge curling of a film, comprising the edge curling core for preventing edge curling of a film according to any one of claims 1 to 8.
10. A film production device for preventing edge lifting of a film, which is characterized by comprising the edge lifting preventing winding core of any one of claims 1-8 or the edge lifting preventing winding roller of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320808796.8U CN219620597U (en) | 2023-04-12 | 2023-04-12 | Prevent that film sticks up limit and roll up core, roller and film apparatus for producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320808796.8U CN219620597U (en) | 2023-04-12 | 2023-04-12 | Prevent that film sticks up limit and roll up core, roller and film apparatus for producing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219620597U true CN219620597U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320808796.8U Active CN219620597U (en) | 2023-04-12 | 2023-04-12 | Prevent that film sticks up limit and roll up core, roller and film apparatus for producing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219620597U (en) |
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- 2023-04-12 CN CN202320808796.8U patent/CN219620597U/en active Active
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