Reel

Abstract

The utility model discloses a reel, which comprises a reel body, a plurality of winding shafts and a plurality of winding shafts, the reel body is of a cylindrical structure with a preset extension length, and the winding shafts are arranged on the reel body. The at least two limiting pieces are adjustably arranged on the reel body and extend in the radial direction of the reel body; a gap is formed between every two adjacent limiting pieces in the axis direction of the reel body, a winding area is formed by the gaps, and the width of the winding area in the axis direction of the reel body is adjusted by moving the positions of the limiting pieces on the reel body. According to the embodiment of the invention, the width of the winding area is adjusted by moving the position of the limiting piece on the reel body, so that the winding piece wound on the reel can be better limited, and the winding piece is effectively prevented from shaking on the reel.

Description

Technical Field

[0001] This disclosure generally relates to the field of lithium-ion battery technology, and more particularly to a reel. Background Technology

[0002] Lithium-ion batteries are widely used in electric vehicles, mobile terminals, and cameras due to their advantages such as light weight and good safety performance.

[0003] In the production process of lithium batteries, materials such as positive electrode sheets, negative electrode sheets, and separators are wound onto a spool to form a tight roll structure, which is called a roll.

[0004] To ensure battery performance and safety, the reel needs to undergo a specific drying process to remove moisture. After drying, the reel's volume decreases due to moisture evaporation, and gaps appear between the reel and the spool. During transport, the reel may shift, rubbing or colliding with other components, resulting in scratches on its surface. Scratched reels may need to be discarded or reprocessed, leading to material waste.

[0005] In view of this, there is an urgent need to provide a reel that can limit the movement of the drum and prevent the drum from shifting away from the reel after drying. Utility Model Content

[0006] In order to at least solve the technical problems mentioned above, this disclosure proposes a spool in which a limiting member is movable on the spool, thereby enabling better limiting of the winding material wound on the spool.

[0007] In a first aspect, this disclosure provides a reel, a reel body, the reel body being a cylindrical structure having a predetermined extension length; and at least two limiting members, the limiting members being adjustablely disposed on the reel body and extending along the radial direction of the reel body; adjacent two of the limiting members are spaced apart along the axial direction of the reel body, the space forming a winding area, wherein the width of the winding area along the axial direction of the reel body is adjusted by moving the position of the limiting members on the reel body.

[0008] In some embodiments, the limiting member is a circular plate with a preset thickness, wherein a through hole is provided in the middle for the scroll body to pass through.

[0009] In some embodiments, the reel body is provided with an external thread, and the inner peripheral wall of the through hole of the limiting member is provided with an internal thread. The limiting member rotates relative to the reel body to achieve position adjustment of the limiting member on the reel body.

[0010] In some embodiments, the limiting member has a side surface facing the winding area and a side surface away from the winding area, and a buffer is provided on at least the side surface of the limiting member facing the winding area.

[0011] In some embodiments, the reel further includes a film; the film is detachably disposed on the reel body 101 of the winding area, and the winding member is wound around the outer periphery of the film.

[0012] In some embodiments, the reel body includes a mounting portion and a fixing portion symmetrically arranged at both ends of the mounting portion; the limiting member is disposed on the fixing portion, the film is disposed on the mounting portion, and the outer diameter of the film is the same as the outer diameter of the fixing portion.

[0013] In some embodiments, the fixing part is detachably connected to the mounting part.

[0014] In some embodiments, at least one end of the mounting portion is provided with an external thread, and the fixing portion is provided with an internal thread; the fixing portion rotates relative to the mounting portion to adjust the distance between two adjacent fixing portions;

[0015] The fixing part is also provided with an external thread that mates with the internal thread on the inner circumferential wall of the limiting member, and the position of the limiting member on the fixing part is adjusted by rotating the limiting member.

[0016] In some embodiments, the roll film is made of a flexible material capable of deformation, and includes a first form and a second form that can be interchanged; in the first form, the roll is cuboid and has a first buckle and a second buckle respectively provided at its two ends along its length or width direction; in the second form, the roll is sleeve-shaped, the sleeve being formed by the two ends of the roll film in the first form abutting each other and being fixed by the first buckle and the second buckle.

[0017] In some embodiments, the first buckle includes a protrusion disposed on a first end face and extending away from the end face, and a limiting hole disposed through the protrusion along the thickness direction of the roll film; the second buckle includes a groove disposed on a second end face and extending towards the first end face, and a stop block adapted to the limiting hole; the first end face and the second end face are the surfaces of the two ends of the roll in the length or width direction in the first configuration.

[0018] Using the reel provided above, the width of the winding area can be adjusted by moving the limiting member on the reel body, thereby better limiting the winding workpiece wound on the reel. Furthermore, in some embodiments, by having a detachable film on the reel body in the winding area, when the film develops increased surface roughness after long-term use, replacing the film with a new one is sufficient to prevent wrinkles, diagonal lines, and other abnormalities when the winding workpiece is wound on the reel surface, without needing to replace the reel. Even further, in some embodiments, by providing a mounting part and a fixing part on the reel body, and by adjusting the position of the fixing part to change the width of the mounting part, film of different widths can be installed on the reel to accommodate winding workpieces of different widths. Attached Figure Description

[0019] The above and other objects, features, and advantages of exemplary embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0020] Figure 1 A schematic diagram of the scroll structure is shown;

[0021] Figure 2 A schematic diagram of the structure is shown where the film is not mounted on the reel;

[0022] Figure 3 A schematic diagram showing the film in its first state is shown;

[0023] Figure 4 A schematic diagram of the film in its second state is shown.

[0024] In the image: 100, scroll;

[0025] 101. Reel body; 102. Limiting component; 103. Film roll; 104. Winding area; 105. Mounting part; 106. Fixing part; 107. First snap-fit ​​assembly; 108. Second snap-fit ​​assembly;

[0026] 1071. Protrusion; 1072. Limiting hole;

[0027] 1081. Groove; 1082. Stop block. Detailed Implementation

[0028] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0029] It should be understood that the terms “comprising” and “including” used in this disclosure and claims indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0031] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0032] The specific embodiments disclosed herein will now be described in detail with reference to the accompanying drawings.

[0033] like Figure 1 As shown, this disclosure provides a reel 100, which includes a reel body 101 and at least two limiting members 102. Specifically, the reel body 101 has a predetermined extension length and a cylindrical structure. The limiting members 102 are adjustablely disposed on the reel body 101 and extend along the radial direction of the reel body 101. There is a gap between two adjacent limiting members 102 along the axial direction of the reel body 101. This gap constitutes a winding area 104 of the winding member. The width of the winding area 104 along the axial direction of the reel body 101 can be adjusted by moving the position of the limiting members 102 on the reel body 101.

[0034] In use, the width of the winding area 104 is adapted to the width of the spool by adjusting the position of the limiting member 102, and then the spool is wound around the winding area 104 on the spool body 101. After winding, a drying operation is performed. As the spool loses moisture during the drying process, its width decreases, causing the two ends of the spool to no longer abut against the limiting member 102. This creates a gap between the spool and the spool body 101, causing the spool to slide on the spool body 101. Therefore, the position of the limiting member 102 is readjusted to reduce the width of the limiting area and ensure that the limiting member 102 re-contacts the two ends of the spool, achieving precise limiting of the spool. This solution can prevent the spool from sliding on the spool 100 during transport, thus avoiding scratches on both sides and ensuring battery quality.

[0035] Those skilled in the art will understand that the reel 100 provided in this disclosure can be used not only in the battery field for winding rolls, but also in other fields for winding other winding components. For example, the reel 100 can be used in the textile and papermaking fields for winding textiles or paper.

[0036] Those skilled in the art will also understand that the number of limiting members 102 on the scroll body 101 can be any positive integer not less than 2. That is, two limiting members 102 can be spaced apart on the scroll body 101, and three limiting members 102 can also be spaced apart. When two limiting members 102 are provided, a winding area 104 is formed between the two limiting members 102; when three limiting members 102 are provided, two winding areas 104 are formed between the three limiting members 102. In actual use, the number of limiting members 102 is set according to different needs. In addition, to facilitate those skilled in the art to understand this solution, the following content will further describe the scroll 100 using the example of providing two limiting members 102 on the scroll body 101.

[0037] In one specific embodiment, the limiting member 102 is a circular plate with a preset thickness, and a through hole in the middle for the scroll body 101 to pass through. The scroll body 101 is provided with external threads, and the inner peripheral wall of the through hole of the limiting member 102 is provided with internal threads. The limiting member 102 rotates relative to the scroll body 101 to adjust the position of the limiting member 102 on the scroll body 101.

[0038] In this design, two symmetrically arranged limiting members 102, namely the first limiting member and the second limiting member, are located at both ends of the reel body 101. Both the first and second limiting members are circular polyethylene (PE) sheets of a certain thickness, with a through hole in the middle for the reel body 101 to pass through. An internal thread is provided on the inner circumferential surface of the through hole. The reel body 101 has an external thread corresponding to the internal thread, and both the first and second limiting members are threadedly connected to the reel body 101. In use, the width of the winding area 104 can be adjusted by rotating only the first or second limiting member, or the distance between them can be adjusted by rotating both the first and second limiting members. That is, in this design, rotating the limiting member 102 causes it to move along the axial direction of the reel body 101, thereby changing the width of the winding area 104.

[0039] It is worth noting that the shape and material of the limiting member 102 are not limited in this solution. That is to say, the cross-sectional shape of the limiting member 102 in the direction perpendicular to the axis of the scroll body 101 can be any shape other than a circle, such as a square, an ellipse, etc. The material of the limiting member 102 can be any material other than polyethylene, such as stainless steel or other metals, rubber, etc.

[0040] Furthermore, those skilled in the art will understand that in other embodiments, one limiting member 102 is fixedly connected to the reel body 101, and the other limiting member 102 is threadedly connected to the reel body 101. That is, by simply adjusting the position of one limiting member 102 on the reel body 101, the distance between the two limiting members 102 can be changed, and the width of the winding area 104 can also be changed.

[0041] In this solution, the width of the winding area 104 of the spool 100 is adjusted to match the width of the spool by adjusting the position of the limiting member 102. Then, materials such as positive electrode sheets, negative electrode sheets, or separators are wound onto the winding area 104 of the spool 100 to form a spool. Next, a drying operation is performed on the spool. After the drying operation, a gap exists between the spool and the limiting member 102 due to the evaporation of moisture in the spool. The first limiting member is then rotated to move towards the second limiting member. The movement stops when both ends of the spool again come into contact with the first and second limiting members. This solution not only limits the spool before the drying operation but also after the drying operation. This effectively prevents scratches on both sides of the spool, ensuring battery quality.

[0042] In one specific embodiment, the width of the external thread on the reel body 101 is greater than the width of the internal thread on the limiting member 102. This design aims to save material by reducing the thickness of the limiting member 102, while ensuring that the limiting member 102 has sufficient room to move on the reel body 101. This not only reduces material costs but also expands the adjustment range of the winding zone 104, making the entire structure more adaptable and flexible.

[0043] In this disclosed solution, the limiting member 102 is connected to the reel body 101 via a threaded connection, eliminating the need for additional fixing structures on the sleeve to secure the limiting member 102. This connection method not only simplifies the design but also allows for flexible adjustment of the position of the limiting member 102 on the reel body 101, thereby changing the width of the winding area 104 to accommodate reels of different specifications. This operation is both convenient and efficient, and also facilitates the adjustment and replacement of the limiting member 102.

[0044] In another specific embodiment, the limiting member 102 is not connected to the reel body 101 by threads, but is fixed to the reel body 101 by a detachable component on the limiting member 102. That is, in this embodiment, the limiting member 102 has an annular part that is detachably connected to the reel body 101, and two extensions spaced apart along the outer periphery of the annular part, wherein the annular part is provided with a buckle, which can be opened to remove the limiting member 102 from the reel body 101, and the buckle can be engaged to fix the limiting member 102 to the reel body 101.

[0045] In one specific embodiment, the limiting member 102 has a side surface facing the winding area 104 and a side surface away from the winding area 104, and a buffer is provided on at least the side surface of the limiting member 102 facing the winding area 104.

[0046] In this embodiment, the limiting member 102 has a surface facing the winding area 104 and a surface facing away from the winding area 104. To provide cushioning when the roll contacts the limiting member 102, a cushioning element (not shown in the figure) made of flexible material is installed on the surface of the limiting member 102 facing the winding area 104. In this embodiment, this cushioning element is a layer of foam attached to the surface of the limiting member 102. The foam can absorb the impact force generated when the roll contacts the limiting member 102, helping to protect the roll from damage.

[0047] Of course, those skilled in the art will understand that in other embodiments, providing buffers on both the side surface of the limiting member 102 facing the winding area 104 and the other side surface facing away from the winding area 104 also falls within the protection scope of this solution.

[0048] In some embodiments, the reel 100 further includes a roll film 103; the roll film 103 is detachably disposed on the reel body 101 of the winding area 104, and the winding member is wound around the outer periphery of the roll film 103.

[0049] As is well known, after prolonged use, the surface of the reel body 101 may become rough, causing wrinkles and diagonal lines during winding, affecting product quality. To avoid resource waste caused by frequent replacement of the reel 100, this solution proposes an improved design: a detachable film 103 is installed in the winding area 104 of the reel 100. In actual operation, the drum is wound around the outer periphery of the film 103, rather than directly contacting the reel body 101. Once the surface of the film 103 becomes rough, only the film 103 needs to be replaced, without replacing the entire reel 100. This design helps reduce production costs while ensuring the quality of the drum.

[0050] In one specific embodiment, the roll film 103 is a thin film with a preset thickness, one side of which is coated with adhesive. The roll film 103 is adhered to the outer periphery of the roll body 101 of the winding area 104 by the adhesive. When it is necessary to replace the roll film 103, the old roll film 103 is simply peeled off from the roll body 101, and a new roll film 103 coated with adhesive is then adhered to the roll body 101 to complete the replacement.

[0051] In another specific embodiment, the roll film 103 is made of a flexible material capable of deformation, and includes a first form and a second form that can be interchanged; in the first form, the roll 100 is cuboid, and a first latching assembly 107 and a second latching assembly 108 are respectively provided at its two ends along its length or width direction; in the second form, the roll 100 is sleeve-shaped, and the sleeve shape is formed by the two ends of the roll film 103 in the first form abutting each other and being fixedly surrounded by the first latching assembly 107 and the second latching assembly 108.

[0052] Specifically, the first snap-fit ​​assembly 107 includes a protrusion 1071 disposed on a first end face and extending away from the end face, and a limiting hole 1072 disposed through the protrusion 1071 along the thickness direction of the roll film 103; the second snap-fit ​​assembly 108 includes a groove 1081 disposed on a second end face and extending away from the first end face, and a stop block 1082 adapted to the limiting hole 1072; the first end face and the second end face are the surfaces of the two ends in the length or width direction of the roll in the first configuration.

[0053] like Figure 3 and Figure 4As shown, in this design, the roll film 103 is no longer a thin film, but a sleeve made of a deformable flexible material. Specifically, the roll film 103 has two interchangeable forms: a first form and a second form. In the first form, the roll film 103 is rectangular, characterized by having a first latching assembly 107 and a second latching assembly 108 at both ends along its length. In the second form, the roll film 103 has a sleeve structure, formed by joining the two ends of the roll film 103 together and securing the two ends of the rectangular block using the first latching assembly 107 and the second latching assembly 108. In use, the roll film 103 is wrapped around the roll body 101 and the two ends are connected by the first latching assembly 107 and the second latching assembly 108. When the roll film 103 needs to be replaced, it can be removed from the roll body 101 by disassembling the first latching assembly 107 and the second latching assembly 108.

[0054] Of course, those skilled in the art will understand that when the gap between the two fixing parts 106 is large, the length of the roll film 103 needs to be adapted to the length of the gap. In this case, the first snap-fit ​​assembly 107 and the second snap-fit ​​assembly 108 can be disposed on the surfaces of the two ends along the width direction of the roll film 103. That is to say, the first snap-fit ​​assembly 107 and the second snap-fit ​​assembly 108 disposed at the two ends in the width direction also fall within the protection scope of this solution.

[0055] The above scheme details the two forms of the roll film 103 and how to switch between the two forms. Next, taking the roll film 103 in the first form as a reference, the first snap-fit ​​assembly 107 and the second snap-fit ​​assembly 108 set on the roll film 103 are described in detail.

[0056] like Figure 3 As shown, the roll film 103 has two ends along its length, namely a first end and a second end. A first latching assembly 107 is disposed at the first end, which includes a protrusion 1071 and a limiting hole 1072 disposed on the protrusion 1071. The protrusion 1071 is a plate-like member disposed on the end face of the first end and extending away from the first end face, and the limiting hole 1072 is a through hole disposed through the protrusion 1071 in the thickness direction of the roll film 103. It is worth noting that the thickness direction of the roll film 103 refers to the height direction of the roll film 103. In this embodiment, the length of the roll film 103 is greater than its width, and the width is greater than its height.

[0057] The second snap-fit ​​assembly 108 is disposed on the second end, and includes a groove 1081 adapted to the protrusion 1071 and a stop 1082 adapted to the limiting hole 1072. The groove 1081 is formed by extending the end face of the second end towards the first end, and a mounting hole communicating with the groove 1081 is provided on the outer surface of the roll film 103, and the stop 1082 is limited in the mounting hole.

[0058] When the film 103 needs to be installed on the reel body 101, the inner surface of the film 103 abuts against the outer periphery of the reel body 101, the protrusion 1071 is inserted into the groove 1081, and then the stop block 1082 is inserted into the limiting hole 1072 on the protrusion 1071 to connect the first end and the second end, thus completing the conversion of the film 103 from the first form to the second form. When the film 103 needs to be removed from the reel body 101, the stop block 1082 is pulled out from the limiting hole 1072 on the protrusion 1071, and then the protrusion 1071 is pulled out from the groove 1081 to complete the disassembly. Thus, the film 103 completes the conversion from the second form to the first form.

[0059] In this design, in order to facilitate the removal of the stop block 1082 from the limiting hole 1072, a rebound device is provided in the groove 1081. When the stop block 1082 needs to extend out of the groove 1081, a downward force is applied to the stop block 1082, causing the stop block 1082 to abut against the rebound device. The rebound device provides an opposite force to the stop block 1082, and the stop block 1082 is ejected under this force.

[0060] Those skilled in the art will understand that other means can also be used to pull the stop block 1082 out of the groove 1081, which is convenient for using auxiliary tools to clamp the stop block 1082 out.

[0061] In one specific embodiment, the roll body 101 includes a mounting portion 105 and a fixing portion 106 symmetrically arranged at both ends of the mounting portion 105; the limiting member 102 is disposed on the fixing portion 106, the roll film 103 is disposed on the mounting portion 105, and the outer diameter of the roll film 103 is the same as the outer diameter of the fixing portion 106.

[0062] like Figure 2 As shown, the reel body 101 includes a mounting portion 105 and fixing portions 106 symmetrically arranged at both ends of the mounting portion 105. Both the mounting portion 105 and the fixing portion 106 are cylindrical structures, and the outer diameter of the mounting portion 105 is smaller than the outer diameter of the fixing portion 106. The outer periphery of the fixing portion 106 is provided with external threads and is threadedly connected to the limiting member 102. The film 103 is mounted on the mounting portion 105. When the film 103 is installed in place, the outer diameter of the sleeve formed by the film 103 is the same as the outer diameter of the fixing portion 106. This design can provide a smooth winding surface for the reel.

[0063] Those skilled in the art will understand that in this solution, the number of fixing parts 106 on the scroll 100 is the same as the number of limiting members 102, and can be any positive integer not less than 2. For ease of explanation, the following description uses the example of providing two fixing members on the scroll body 101.

[0064] In some embodiments, at least one end of the mounting portion 105 is provided with an external thread, and the fixing portion 106 is provided with an internal thread; the fixing portion 106 rotates relative to the mounting portion 105 to adjust the distance between two adjacent fixing portions 106; the fixing portion 106 is also provided with an external thread that engages with the internal thread on the inner peripheral wall of the limiting member 102, and the position of the limiting member 102 on the fixing portion 106 is adjusted by rotating the limiting member 102.

[0065] In the disclosed design, the mounting portion 105 has two fixing portions 106 at both ends, and the mounting portion 105 is threadedly connected to at least one fixing portion 106. Specifically, the fixing portion 106, which has a cylindrical structure, has a through hole through which the mounting portion 105 passes. The inner circumferential wall of this through hole has an internal thread, and the mounting portion 105 has an external thread that matches the internal thread in the through hole. During installation, the mounting portion 105 is inserted into the through hole of the fixing portion 106, and then either the fixing portion 106 or the mounting portion 105 is rotated to connect them together.

[0066] In the disclosed solution, by adjusting the position of the fixing part 106 on the mounting part 105, the distance between the two fixing parts 106 can be changed, thereby adjusting the extension length of the mounting part 105. This design allows for the installation of film rolls 103 of different widths to accommodate rolls of different widths, thereby expanding the adjustment range of the width of the winding area 104. This configuration improves flexibility and adaptability.

[0067] Those skilled in the art will understand that, based on the above description, the threaded connection between both fixing parts 106 and mounting parts 105 still falls within the scope of protection of this disclosure.

[0068] It is worth noting that in this design, the fixing part 106 is part of the roll body, and its outer periphery is provided with external threads, which engage with the external threads on the inner peripheral wall of the limiting member 102. In use, by keeping the mounting part and the fixing part stationary, rotating the limiting member 102 can adjust its position on the fixing part 106, thereby achieving the purpose of adjusting the width of the winding area.

[0069] In some embodiments, the fixing part 106 is detachably connected to the mounting part 105.

[0070] In the above scheme, the roll 100 is provided with two fixing parts 106, namely the first fixing part and the second fixing part. Both fixing parts 106 can be detachably connected to the mounting part 105, or either one can be detachably connected to the mounting part 105. This structure is suitable for roll films 103 that only have a cylindrical shape. When replacing the roll film 103, it is only necessary to remove the fixing part 106 from the mounting part 105 and fix the roll film 103 to the mounting part 105. This design makes the replacement of the roll film 103 quick and easy.

[0071] The solution disclosed herein not only limits the movement of the roll before drying but also after drying, effectively preventing damage to both ends of the roll. Furthermore, the roll 100 is equipped with a replaceable film 103. When the film 103 develops increased surface roughness after prolonged use, there is no need to replace the roll 100; simply replacing the film 103 prevents wrinkles, diagonal lines, and other abnormalities from occurring when the winding component is wound on the surface of the roll 100, thereby saving costs.

[0072] While numerous embodiments of this disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of this disclosure. It should be understood that various alternatives to the embodiments of this disclosure described herein may be employed in the practice of this disclosure. The appended claims are intended to define the scope of this disclosure and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A reel, characterized in that, The reel comprises: a reel body (101) in a cylindrical structure with a preset extension length; and at least two limiting members (102) adjustably arranged on the reel body (101) and extending along the radial direction of the reel body (101); two adjacent limiting members (102) have a spacing along the axis direction of the reel body (101), and the spacing forms a winding area (104), wherein the width of the winding area along the axis direction of the reel body (101) is adjusted by moving the position of the limiting member (102) on the reel body (101).

2. A reeling shaft according to claim 1, characterized in that The limiting member (102) is a circular plate with a preset thickness, and a through hole is arranged in the middle for the reel body (101) to pass through.

3. A reeling shaft according to claim 2, characterised in that The reel body (101) is provided with external threads, and the inner circumferential wall of the through hole of the limiting member (102) is provided with internal threads; the limiting member (102) is relatively rotated with the reel body (101) to realize the position adjustment of the limiting member (102) on the reel body (101).

4. A reeling shaft according to any one of claims 1-3, characterised in that The limiting member (102) has one side surface facing the winding area (104) and the other side surface away from the winding area (104), and at least the one side surface of the limiting member (102) facing the winding area (104) is provided with a buffer.

5. A reeling shaft according to any one of claims 1-3, characterized in that The reel further comprises a film winding (103); The film winding (103) is detachably arranged on the reel body (101) of the winding area (104), and the winding member is wound on the outer periphery of the film winding (103).

6. A reeling shaft according to claim 5, characterised in that, The reel body (101) comprises a mounting portion (105) and a fixing portion (106) symmetrically arranged at both ends of the mounting portion (105); The limiting member (102) is adjustably arranged on the fixing portion (106), and the film winding (103) is detachably arranged on the mounting portion (105), and the outer diameter of the film winding (103) is the same as the outer diameter of the fixing portion (106).

7. A reeling shaft according to claim 6, characterised in that The fixing portion (106) is detachably connected with the mounting portion (105).

8. The reeling shaft according to claim 6, characterized in that, At least one end of the mounting portion (105) is provided with external threads, and the fixing portion (106) is provided with internal threads; the fixing portion (106) is relatively rotated with the mounting portion (105) to adjust the distance between two adjacent fixing portions (106); The fixing portion (106) is further provided with external threads matched with the internal threads on the inner circumferential wall of the limiting member (102), and the position of the limiting member (102) on the fixing portion (106) is adjusted by rotating the limiting member (102).

9. The reeling shaft according to claim 6, characterized in that, The film winding (103) is made of flexible material capable of deformation, and comprises a first form and a second form which are converted with each other; In the first form, the reel is in a cuboid shape, and the two ends along the length or width direction are respectively provided with a first buckle assembly (107) and a second buckle assembly (108); In the second mode, the reel is in a sleeve shape, which is formed by the two end portions of the film (103) in the first mode abutting each other and being fixed by the first buckle assembly (107) and the second buckle assembly (108).

10. A reeling shaft according to claim 9, characterised in that The first buckle assembly (107) comprises a protrusion (1071) arranged on the first end face and extending away from the end portion, and a limiting hole (1072) arranged on the protrusion (1071) and penetrating in the thickness direction of the film (103); The second buckle assembly (108) comprises a groove (1081) arranged on the second end face and extending towards the first end face, and a stop block (1082) matched with the limiting hole (1072); The first end face and the second end face are surfaces of the two end portions of the reel in the length or width direction in the first mode.

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