Winding drum

Abstract

The utility model relates to the technical field of battery processing, in particular to a winding drum which comprises an inner drum and an outer drum. The telescopic piece is wound on the inner cylinder; the outer cylinder is arranged on the inner cylinder in a sleeving mode, and the telescopic part is located in a cavity formed between the inner cylinder and the outer cylinder; the adjusting part is used for enabling the telescopic part to expand, so that the inner barrel and the outer barrel can synchronously rotate through friction force provided by the telescopic part; the telescopic piece is contracted, so that the inner cylinder and the outer cylinder can rotate relatively; the outer cylinder is further provided with an opening for the telescopic piece to stretch out in an unrolling mode and stretch in in a rolling mode. By controlling expansion or contraction of the telescopic part, the outer barrel and the inner barrel can rotate synchronously, or the inner barrel can rotate independently, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and more specifically, to a roll used for winding rolls in the battery production process. Background Technology

[0002] With the rapid development of the secondary battery industry, its applications in various industries are becoming increasingly widespread. In the secondary battery manufacturing process, at the early stage of battery manufacturing, namely the electrode manufacturing stage, rolls are often used for unwinding and rewinding operations. During the unwinding operation, because the tail end of the roll is usually fixed to the roll with tape, the tail end of the roll cannot be detached from the roll and reach the processing station, resulting in waste of roll tail material.

[0003] Chinese utility model patent CN221662310U discloses a roll with built-in PE film. The film is placed inside the roll and can be freely pulled out through a channel on the side of the roll. During rolling, slitting, and rewinding, the PE film is connected to the electrode sheet using adhesive tape. Slitting or die-cutting allows the film to replace the good electrode sheet, thus reducing electrode waste. However, the locking assembly of this device uses a rod and positioning holes to connect the roll to the rotating shaft, which is cumbersome for manual operation. Utility Model Content

[0004] The main purpose of this utility model is to propose a roll with a simple structure and easy operation. By controlling the expansion or contraction of the telescopic component between the inner and outer rolls, the inner and outer rolls can be locked or separated, thereby reducing the waste of roll material tail material through the telescopic component.

[0005] To solve the above-mentioned technical problems, this utility model proposes a reel, comprising:

[0006] Inner cylinder;

[0007] Roll material, wound onto an inner cylinder;

[0008] The outer cylinder is fitted onto the inner cylinder, and the roll material is located in the cavity formed between the inner and outer cylinders;

[0009] And adjusting components for expanding the roll so that the inner and outer cylinders can rotate synchronously through the friction provided by the roll; and for contracting the roll so that the inner and outer cylinders can rotate relative to each other;

[0010] The outer cylinder also has openings for the unwinding and rewinding of the roll material.

[0011] In the above technical solution, the roll material is further described as a flexible hollow roll material, which has a hollow cavity inside and is provided with air holes that communicate with the hollow cavity.

[0012] The regulating component is a device used to supply gas to the vent and to exhaust gas.

[0013] In any of the above technical solutions, the roll material is further made of rubber material.

[0014] In any of the above technical solutions, further, end caps are provided on both sides of the outer cylinder, and ports are opened on the end caps. Air pipes are connected to the ports, and the other end of the air pipes is connected to the air holes.

[0015] The regulating element supplies gas to and exhausts gas through the port on the end cap.

[0016] In any of the above technical solutions, a pressure relief valve is further provided on the port of the end cap or the air pipe.

[0017] In any of the above technical solutions, further comprising:

[0018] The first clamp is located at the end of the telescopic component inside the outer cylinder and is used to fix the telescopic component to the inner cylinder.

[0019] The first clamp has a through-flow channel, one end of which is connected to the air hole and the other end of which is connected to the air tube.

[0020] In any of the above technical solutions, the end cap is a T-shaped sleeve structure and is fixedly sleeved on the inner cylinder; the small end of the end cap is embedded in the outer cylinder, and the large end of the end cap covers the side end of the outer cylinder.

[0021] The end cap has its port located on its large end, and a slot is provided on the outer wall of the small end of the end cap. One end of the first clamp is engaged in the slot, so that the end of the telescopic component located inside the outer cylinder is fixed to the inner cylinder by the first clamp and the end cap.

[0022] In any of the above technical solutions, furthermore, bearings are sleeved on the small ends of the two end caps, and the two ends of the outer cylinder are rotatably connected to the two bearings.

[0023] One end of the slot extends through the small end of the end cap along its length and is connected to the port of the end cap. The air tube is installed inside the slot.

[0024] In any of the above technical solutions, further comprising:

[0025] The second clamp is located at the end of the roll material extending from the opening and is used to clamp the roll material.

[0026] In any of the above technical solutions, the second chuck further includes:

[0027] Upper clip;

[0028] The lower clamping piece is rotatably connected to the middle of the upper clamping piece, and the upper and lower clamping pieces form a pressing end and a clamping end on their respective sides.

[0029] And an elastic element is provided on the pressing end between the upper and lower clamping plates, and the clamping ends of the upper and lower clamping plates are closed by the elastic force to clamp the roll material.

[0030] Beneficial effects: Compared with existing technologies, by controlling the expansion or contraction of the roll material, the outer and inner cylinders can rotate synchronously, or the inner cylinder can rotate independently. The structure is simple and the operation is convenient.

[0031] A second clamp is provided to facilitate the installation of the roll material. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the roll material after unwinding according to this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the rolled material after it is wound up according to this utility model;

[0035] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0036] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0037] Figure 5 yes Figure 4 Enlarged structural diagram at point A;

[0038] Figure 6 This is a schematic diagram of the structure of this utility model after removing the outer cylinder;

[0039] Figure 7 This is a schematic diagram of the structure of this utility model after removing the outer cylinder and bearing;

[0040] Figure 8 yes Figure 7 Enlarged structural diagram at point B;

[0041] Figure 9 This is a side view of the roll material of this utility model.

[0042] The annotations in the attached figures are explained as follows:

[0043] 100. Roll material; 1. Inner cylinder; 2. Telescopic component; 21. Air hole; 3. Outer cylinder; 31. Opening; 4. End cap; 41. Port; 42. Air pipe; 43. Slot; 43. Bearing; 5. First clamp; 51. Guide channel; 6. Second clamp; 61. Upper clamp; 62. Lower clamp; 63. Elastic component; 601. Pressing end; 602. Clamping end. Detailed Implementation

[0044] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0045] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0046] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0049] The roll material mentioned in this application can be foil, such as copper foil or aluminum foil, or it can be an electrode sheet coated with paste. This application does not make any specific limitation in this regard.

[0050] The roll of this application will be described in detail below through the following embodiments.

[0051] Example 1:

[0052] like Figures 1-9 As shown, this embodiment proposes a roller, including: an inner cylinder 1; a telescopic member 2 wound around the inner cylinder 1; an outer cylinder 3 sleeved on the inner cylinder 1, with the telescopic member 2 located in the cavity formed between the inner cylinder 1 and the outer cylinder 3; and an adjusting member for expanding the telescopic member 2 so that the inner cylinder 1 and the outer cylinder 3 can rotate synchronously through the friction provided by the telescopic member 2; and for contracting the telescopic member 2 so that the inner cylinder 1 and the outer cylinder 3 can rotate relative to each other;

[0053] The outer cylinder 3 is also provided with an opening 31 for the telescopic component 2 to extend out and retract.

[0054] To reduce waste at the tail of the roll material while facilitating control and operation, a telescopic component is provided to replace the material at the tail of the roll material. The telescopic component is designed to lock and separate the inner and outer cylinders of the roll by expanding and contracting.

[0055] Specifically, the roll is divided into an inner roll 1 and an outer roll 3. The telescopic component 2 is wound on the inner roll 1, and an opening 31 is made on the outer roll 3. Similar to the winding method of the roll material, the telescopic component 2 is wound into the outer roll 3 during winding and extends out from the opening 31 of the outer roll 3 during unwinding. The end of the roll 100 is fixed to the outer end of the telescopic member 2. When the roll 100 is wound up, the inner cylinder 1 is rotated, causing the telescopic member 2 to be wound up. After the telescopic member 2 is fully wound up, the adjusting member controls the expansion of the telescopic member 2 in the wound state, so that the outermost telescopic member 2 is pressed against the inner wall of the outer cylinder 3, and the innermost telescopic member 2 is pressed against the outer wall of the inner cylinder 1. At this time, the inner cylinder 1 and the outer cylinder 3 are relatively stationary under the action of the friction of the telescopic member 2. When the inner cylinder 1 rotates, it drives the outer cylinder 3 to rotate synchronously. When the outer cylinder 3 rotates, the outer cylinder 3 completes the winding of the roll 100. When the roll 100 is unwound, the inner cylinder is rotated in the opposite direction. 1. The inner cylinder 1 drives the outer cylinder 3 to rotate synchronously. The outer cylinder 3 unwinds the roll material 100. After the roll material 100 is completely unwound, the adjusting component controls the telescopic component 2 on the inner cylinder 1 to retract. The friction force of the telescopic component 2 acting on the outer cylinder 3 and the inner cylinder 1 no longer interferes with the rotation of the inner cylinder 1 relative to the outer cylinder 3. The inner cylinder 1 can rotate independently relative to the outer cylinder 3. When the inner cylinder 1 continues to rotate, the telescopic component 2 on the inner cylinder 1 will be unwound through the opening 31 on the outer cylinder 3. The part of the telescopic component 2 that is unwound from the roll replaces the roll material 100 that was originally connected to the roll. The roll material 100 can continue to be transferred forward to the processing station, thereby avoiding material waste at the tail end of the roll material 100.

[0056] It should be noted that the telescopic component 2 is made of flexible hollow material, which has a hollow cavity inside and is provided with an air hole 21 that communicates with the hollow cavity; the adjusting component is a device for supplying gas to the air hole 21 and for exhausting gas.

[0057] To achieve the expansion and contraction of the telescopic component 2, it is designed as a flexible hollow roll material. The hollow roll material refers to a hollow roll material with both ends closed but with air holes 21. By supplying gas into the air holes 21, the telescopic component 2 gradually expands. The expanded telescopic component 2 fills the cavity formed between the inner cylinder 1 and the outer cylinder 3, and presses against the inner cylinder 1 and the outer cylinder 3 respectively, connecting the two together. When the adjusting component evacuates the telescopic component 2, the telescopic component 2 contracts, and the force it exerts on the outer cylinder 3 gradually decreases, or even separates from the outer cylinder 3, thereby allowing the inner cylinder 1 to rotate independently.

[0058] It should be noted that the telescopic component 2 is made of rubber. The inner cylinder 1 and the outer cylinder 3 can rotate synchronously, mainly due to the friction provided by the telescopic component 2, which is why rubber is used to make the telescopic component 2.

[0059] Example 2:

[0060] This embodiment is a further improvement based on Embodiment 1.

[0061] like Figures 3-8 As shown, in this embodiment, end caps 4 are provided on both sides of the outer cylinder 3. Ports 41 are provided on the end caps 4, and air pipes 42 are connected to the ports 41. The other end of the air pipes 42 is connected to the air holes 21. The adjusting component delivers gas to the air pipes 42 and exhausts gas through the ports 41 on the end caps 4.

[0062] To facilitate inflation and deflation of the telescopic component 2, an end cap 4 is provided, and an air pipe 42 is connected to the end cap 4. The air pipe 42 is then connected to the air hole 21 on the telescopic component 2. The adjusting component is connected to the port 41 on the end cap through a pipe, so that the air pipe 42 can be inflated or deflated, thereby enabling the telescopic component 2 to expand or contract.

[0063] The two ends of the drum are clamped together by clamps on both sides, which are driven by a motor. When the motor drives the clamps to rotate, the inner drum 1 on the drum rotates synchronously. The connection between the pipe on the adjusting component and the port 41 on the end cover 4 can be set so that the connection is disconnected when the inner drum 1 rotates. That is, when the inner drum 1 stops rotating, it is inflated or deflated, and then the connection is disconnected.

[0064] In this embodiment, an optimized pressure relief valve is provided on the port 41 of the end cap 4 or the air pipe 42. To prevent excessive gas flow and pressure into the telescopic member 2, which could damage the telescopic member 2, a pressure relief valve is provided to stabilize the pressure.

[0065] Example 3:

[0066] This embodiment is a further improvement based on any of the above embodiments.

[0067] like Figure 5 , Figure 7 , Figure 8 , Figure 9 As shown, in this embodiment, it also includes: a first clamp 5, which is disposed on the end of the telescopic member 2 located inside the outer cylinder 3, for fixing the telescopic member 2 to the inner cylinder 1;

[0068] The first clamp 5 has a through-flow channel 51, one end of which is connected to the air hole 21 and the other end is connected to the air tube 42.

[0069] By setting the first clamp 5, the end of the telescopic member 2 is detachably set on the inner cylinder 1 for easy assembly and disassembly.

[0070] Specifically, the end cap 4 is a T-shaped sleeve structure and is fixedly sleeved on the inner cylinder 1; the small end of the end cap 4 is embedded in the outer cylinder 3, and the large end of the end cap 4 covers the side end of the outer cylinder 3.

[0071] Among them, the port 41 of the end cap 4 is located on its large end, and the outer wall of the small end of the end cap 4 is provided with a slot 43. One end of the first clamp 5 is engaged in the slot 43, so that the end of the telescopic member 2 located in the outer cylinder 3 is fixed to the inner cylinder 1 through the first clamp 5 and the end cap 4.

[0072] The end cap 4 is set as a T-shaped sleeve structure, which can close the side end of the outer cylinder 3 on the one hand, and make it easy for the first clamp 5 to be engaged in the slot 43 by opening a slot 43 on it.

[0073] In this embodiment, the optimized version has bearings 44 sleeved on the small ends of the two end caps 4, and the two ends of the outer cylinder 3 are rotatably connected to the two bearings 44.

[0074] One end of the slot 43 extends through the small end of the end cap 4 along its length and is connected to the port 41 of the end cap 4. The air pipe 42 is installed in the slot 43.

[0075] By setting bearing 44, the stability of the connection between inner cylinder 1, end cap 4, and outer cylinder 3 is improved, and the inner cylinder 1 can rotate freely after the telescopic component 2 is disengaged from the outer cylinder 3.

[0076] Example 4:

[0077] This embodiment is a further improvement based on any of the above embodiments.

[0078] like Figures 1-9 As shown, in this embodiment, it also includes a second clamp 6, which is disposed on the end of the telescopic member 2 extending out of the opening 31, for clamping the roll material 100.

[0079] The conventional method is to attach the end of the roll material to the drum with tape. After unwinding, the adhesive residue on the drum needs to be cleaned, which is quite tedious. Therefore, this application provides a second clamp 6, which fixes the roll material 100 to the telescopic member 2. This not only facilitates installation but also eliminates the need for cleaning.

[0080] Specifically, the second clamp 6 includes: an upper clamping piece 61; a lower clamping piece 62, the middle part of which is rotatably connected to the middle part of the upper clamping piece 61; pressing end 601 and clamping end 602 are formed on both sides of the upper clamping piece 61 and the lower clamping piece 62, respectively; and an elastic member 63, which is disposed on the pressing end 601 between the upper clamping piece 61 and the lower clamping piece 62, and closes the clamping end 602 of the upper clamping piece 61 and the lower clamping piece 62 by elastic force to clamp the roll material 100. The pressing end 601 of the second clamp 6 is fixed to the telescopic member 2. By pressing the pressing end 601, the clamping end 602 on the second clamp 6 increases. At this time, the telescopic member 2 on the clamping end 602 can be removed to complete the material loading, or the end of the telescopic member 2 can be placed on the clamping end 602, and then the pressing end 601 can be released to complete the material loading.

[0081] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A reel, characterized in that, include: Inner cylinder (1); The telescopic component (2) is wound around the inner cylinder (1); The outer cylinder (3) is fitted onto the inner cylinder (1), and the telescopic member (2) is located in the cavity formed between the inner cylinder (1) and the outer cylinder (3); And an adjusting member for expanding the telescopic member (2) so that the inner cylinder (1) and the outer cylinder (3) can rotate synchronously through the friction provided by the telescopic member (2); and for contracting the telescopic member (2) so that the inner cylinder (1) and the outer cylinder (3) can rotate relative to each other; The outer cylinder (3) is also provided with an opening (31) for the telescopic member (2) to extend out when unwinding and extend in when rewinding.

2. The reel as described in claim 1, characterized in that, The telescopic component (2) is a flexible hollow roll material with a hollow cavity inside, and an air hole (21) connected to the hollow cavity is also provided on it. The regulating element is a device for supplying gas to the vent (21) and for venting gas.

3. The reel as described in claim 2, characterized in that, The telescopic component (2) is made of rubber material.

4. The reel as described in claim 2, characterized in that, The outer cylinder (3) is provided with end caps (4) on both sides. The end caps (4) are provided with ports (41). Air pipes (42) are connected to the ports (41). The other end of the air pipes (42) is connected to the air holes (21). The regulating member supplies gas to the air pipe (42) and exhausts gas through the port (41) on the end cap (4).

5. The reel as described in claim 4, characterized in that, A pressure relief valve is provided on the port (41) of the end cap (4) or on the air pipe (42).

6. The reel as described in claim 4, characterized in that, Also includes: The first clamp (5) is disposed on the end of the telescopic member (2) located inside the outer cylinder (3) and is used to fix the telescopic member (2) to the inner cylinder (1); The first clamp (5) has a through-flow channel (51), one end of which is connected to the air hole (21) and the other end of which is connected to the air pipe (42).

7. The reel as described in claim 6, characterized in that, The end cap (4) is a T-shaped sleeve structure and is fixedly sleeved on the inner cylinder (1); the small end of the end cap (4) is embedded in the outer cylinder (3), and the large end of the end cap (4) covers the side end of the outer cylinder (3); The port (41) of the end cap (4) is located on its large end, and a slot (43) is provided on the outer wall of the small end of the end cap (4). One end of the first clamp (5) is engaged in the slot (43), so that one end of the telescopic member (2) located in the outer cylinder (3) is fixed to the inner cylinder (1) through the first clamp (5) and the end cap (4).

8. The reel as described in claim 7, characterized in that, Bearings (44) are fitted on the small ends of the two end caps (4), and the two ends of the outer cylinder (3) are rotatably connected to the two bearings (44); One end of the slot (43) extends through the small end of the end cap (4) along its length and is connected to the port (41) of the end cap (4). The air tube (42) is arranged in the slot (43).

9. The reel as described in any one of claims 1-8, characterized in that, Also includes: The second clamp (6) is located on the end of the telescopic member (2) that extends out of the opening (31) and is used to clamp the roll material.

10. The reel as described in claim 9, characterized in that, The second chuck (6) includes: Upper clip (61); The lower clip (62) has its middle part rotatably connected to the middle part of the upper clip (61), and the upper clip (61) and the lower clip (62) have pressing end (601) and clamping end (602) respectively on both sides. And an elastic element (63) is provided on the pressing end between the upper clamping piece (61) and the lower clamping piece (62), and the clamping ends of the upper clamping piece (61) and the lower clamping piece (62) are closed by elastic force to clamp the roll material.

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