Flattening device and winding equipment
By designing a smoothing device including a smoothing member and a bend, the problem of pole sheet folding in power battery production is solved, and more efficient smoothing effect and cell quality are achieved.
Patent Information
- Application Number
- CN202421222616.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-30
AI Technical Summary
During the production process of power batteries, the winding incoming pole sheet is folded after die-cutting, causing the ear to be folded, affecting production efficiency and causing the battery cell to be short-circuited and scrapped.
A smoothing device is designed, including a first smoothing assembly and a second smoothing assembly. Using the relatively arranged smoothing member and a bent portion, it is smoothed through the gap through which the electrode sheet passes. When the electrode sheet passes through the gap, it is subjected to a multi-directional force to effectively stretch the folded part.
Improve the smoothing efficiency, effectively correct the folding of the electrode ear and the pole plate body, improve the quality and production efficiency of the battery cell, and reduce the occurrence of battery cell short circuit.
Smart Images
Figure CN222619808U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power battery production, in particular to a smoothing device and a winding device. Background Art
[0002] In the production process of power batteries, the incoming electrode sheets may be folded after die-cutting, which cannot be corrected after the winding process. As a result, the battery cells with folded ears will flow to the next process. Severe folding will cause the battery cells to short-circuit and become scrapped, resulting in high cost losses.
[0003] In the related art, the folded pole piece is not smoothed well after passing through the smoothing device, which seriously affects the production efficiency. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a smoothing device and a winding device, which can effectively stretch the folded part of the pole piece, that is, can effectively stretch the folded part of the pole ear of the pole piece or the folded part of the body, improve the smoothing efficiency, and further improve the production efficiency.
[0005] A smoothing device according to an embodiment of the first aspect of the utility model includes: a first smoothing component.
[0006] The first smoothing component includes a first smoothing member and a second smoothing member arranged opposite to each other, and there is a first gap between the first smoothing member and the second smoothing member for the pole piece to pass through, and the first gap gradually decreases along a first direction, and the first direction is the movement direction of the pole piece, wherein the pole piece includes a pole piece body and a pole ear.
[0007] In this embodiment, when the pole piece or the pole piece body passes through the first gap along the first direction, it can be constrained by the first smoothing member and the second smoothing member at the same time to play a smoothing role. Under the smoothing force of the first smoothing member and the second smoothing member, the pole piece is subjected to forces in two directions, thereby effectively stretching the folded part of the pole piece, or stretching the folded part of the pole piece body, thereby improving the smoothing efficiency and further improving the production efficiency.
[0008] According to some embodiments of the present invention, the first smoothing member includes a first curved portion, the second smoothing member includes a second curved portion, and the curvature of at least one of the first curved portion and the second curved portion is a variable value.
[0009] According to some embodiments of the present invention, the first curved portion includes a plurality of first curved segments arranged in sequence along the second direction, the first curved segments having a first curved surface facing the pole piece, and the curvature values of the first curved surfaces of at least two of the plurality of first curved segments are different.
[0010] The second curved portion includes a plurality of second curved segments arranged in sequence along the second direction, the second curved segments having a second curved surface facing the pole piece, and the curvature values of the second curved surfaces of at least two of the plurality of second curved segments are different, wherein the second direction is perpendicular to the first direction, and the second direction is the width of the pole piece.
[0011] According to some embodiments of the present invention, the curvature values of the first curved segments are different, and the first curved segments are arranged at intervals along the second direction; or, the first curved segments are arranged continuously along the second direction, and any two adjacent ones are connected by a smooth transition;
[0012] The curvature values of the second curved segments are different, and the second curved segments are arranged at intervals along the second direction, or the second curved segments are arranged continuously along the second direction, and any two adjacent ones are connected by a smooth transition.
[0013] According to some embodiments of the present invention, at least one of the first curved portion and the second curved portion is a curved portion made of a magnetic material.
[0014] According to some embodiments of the utility model, it also includes a second smoothing component, which includes a third smoothing member and a fourth smoothing member arranged opposite to each other, and there is a second gap between the third smoothing member and the fourth smoothing member for the pole piece to pass through, and the pole piece passes through the first gap and the second gap in sequence, and the second gap is equidistant along the first direction, wherein the size of the second gap is less than or equal to the minimum size of the first gap.
[0015] According to some embodiments of the utility model, a third smoothing component is further included, wherein the third smoothing component includes a smoothing roller and a steering arc, wherein the smoothing roller is coaxially arranged with the steering arc, and there is a third gap between the smoothing roller and the steering arc for the pole piece to pass through, and the pole piece passes through the first gap, the second gap, and the third gap in sequence, and the third gap is equidistant along the first direction, wherein the size of the third gap is less than or equal to the size of the second gap.
[0016] According to some embodiments of the utility model, a dust collector is further included, the turning arc member includes a turning arc plate, a dust removal hollow area is provided on the turning arc plate, and the dust removal port of the dust collector faces the dust removal hollow area.
[0017] According to some embodiments of the present invention, two first smoothing components are provided, two second smoothing components are provided, and one first smoothing component, one second smoothing component, the third smoothing component, another first smoothing component, and another second smoothing component are sequentially arranged along the first direction.
[0018] The two first smoothing components are symmetrically arranged, and the two second smoothing components are symmetrically arranged.
[0019] The winding device according to the embodiment of the second aspect of the utility model comprises the smoothing device in the first aspect.
[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0022] Figure 1 is an axonometric schematic diagram of a smoothing device according to an embodiment of the utility model;
[0023] Figure 2 is a schematic front view of a smoothing device according to an embodiment of the utility model;
[0024] Figure 3 is a bottom view schematic diagram of a turning arc plate according to an embodiment of the utility model;
[0025] Figure 4 is a schematic diagram of a first smoothing component according to a first embodiment of the utility model;
[0026] Figure 5 Schematic diagram of the first smoothing component according to the second embodiment of the utility model Figure 1 ;
[0027] Figure 6 Schematic diagram of the first smoothing component according to the second embodiment of the utility model Figure 2 ;
[0028] Figure 7 is a schematic diagram of another second smoothing component according to an embodiment of the utility model;
[0029] Figure 8 is a schematic diagram of a pole piece according to an embodiment of the utility model;
[0030] Reference numerals:
[0031] The first smoothing component 10, the first smoothing member 11, the first surface 1101, the second surface 1102, the first rear curved segment 111, the first middle curved segment 112, the first front curved segment 113, the second smoothing member 12, the third surface 1201, the fourth surface 1202, the second rear curved segment 121, the second middle curved segment 122, the second front curved segment 123, the first pressing member 13, and the second pressing member 14;
[0032] A second smoothing component 20, a third smoothing member 21, and a fourth smoothing member 22;
[0033] A third smoothing component 30, a smoothing roller 31, a steering arc member 32, and a dust removal hollow area 321;
[0034] The hoop plate 40 , the pole piece 50 , the pole ear 51 , the pole piece body 52 , and the dust collector 60 . DETAILED DESCRIPTION
[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.
[0037] like Figure 1-Figure 8 As shown, a smoothing device according to an embodiment of the first aspect of the utility model comprises a first smoothing component 10 .
[0038] The first smoothing assembly 10 includes a first smoothing member 11 and a second smoothing member 12 arranged opposite to each other. There is a first gap between the first smoothing member 11 and the second smoothing member 12 for the pole piece 50 to pass through. The first gap gradually decreases along the first direction C1. The first direction C1 is the movement direction of the pole piece 50.
[0039] It should be noted that the pole piece 50 includes a pole piece body 52 and a pole ear 51, the pole ear 51 is connected to the pole piece body 52, and the pole piece body 52 is the pole piece coating area. The pole piece 50 is folded, that is, the pole piece body 52 is folded, or the pole ear 51 is folded.
[0040] When the pole piece 50 passes through the first gap along the first direction C1, it can be constrained by the first smoothing member 11 and the second smoothing member 12 at the same time to play a smoothing role. Under the smoothing force of the first smoothing member 11 and the second smoothing member 12, the pole piece 50 is subjected to forces in two directions, for example, the pole piece 50 is subjected to forces perpendicular to the first direction C1 and in opposite directions, or the pole piece 50 is subjected to forces parallel to the first direction C1 and forces perpendicular to the first direction C1, thereby effectively stretching the folded part of the pole piece 50, that is, effectively stretching the folded part of the pole ear 51 of the pole piece 50 or the folded part of the pole piece body 52, thereby improving the smoothing efficiency and further improving the production efficiency.
[0041] It should be noted that the first gap formed between the first smoothing member 11 and the second smoothing member 12 may be substantially V-shaped, may be substantially trumpet-shaped, or may be other suitable shapes, which is not limited in the present embodiment.
[0042] In the first embodiment, Figure 1 and Figure 2 For example, the first smoothing member 11 may be a first curved portion, wherein the first curved portion may be a first curved plate; the second smoothing member 12 may be a second curved portion, wherein the second curved portion may be a second curved plate.
[0043] The first curved plate and the second curved plate are arranged opposite to each other, and a first gap is formed between the first curved plate and the second curved plate. The first gap is roughly trumpet-shaped, which is larger at the top and smaller at the bottom. The pole piece 50 passes through the first gap along the first direction C1. At this moment, the first direction C1 is vertically downward.
[0044] In practical applications, considering that the folding degree of each position of the pole piece 50 is different, some areas have a serious folding degree, and some areas have a light folding degree. When the first smoothing member 11 smoothes the area with a light folding degree, the speed at which the pole piece 50 passes through the first smoothing member 11 can basically pass according to the designed speed, and when the first smoothing member 11 smoothes the area with a serious folding degree, the speed at which the pole piece 50 passes through the first smoothing member 11 slows down, thereby improving the smoothing effect and improving the production yield.
[0045] Based on this, the first curved plate of the present embodiment includes a plurality of first curved segments arranged in sequence along the second direction C2, the first curved segments have a first curved surface facing the pole piece 50, and at least two of the plurality of first curved segments have different curvature values of the first curved surfaces. The second curved plate includes a plurality of second curved segments arranged in sequence along the second direction C2, the second curved segments have a second curved surface facing the pole piece 50, and at least two of the plurality of second curved segments have different curvature values of the second curved surfaces.
[0046] Specifically, Figure 2 , Figure 5 and Figure 6 As shown, the second direction C2 is perpendicular to the first direction C1 , and the second direction C2 is the width direction of the pole piece 50 .
[0047] The first curved plate includes three first curved sections arranged in sequence along the second direction C2: a first rear curved section 111, a first middle curved section 112, and a first front curved section 113. The first rear curved section 111 and the first middle curved section 112 are arranged at intervals, and the first middle curved section 112 and the first front curved section 113 are arranged at intervals. Figure 2 As shown, the first curved plate has a first surface 1101 and a second surface 1102, wherein the first surface 1101 is a first curved surface on the first curved plate facing the pole piece 50, and the second surface 1102 is another first curved surface on the first curved plate away from the pole piece 50. The second curved plate has a third surface 1201 and a fourth surface 1202, wherein the third surface 1201 is a second curved surface on the second curved plate facing the pole piece 50, and the fourth surface 1202 is another second curved surface on the second curved plate away from the pole piece 50.
[0048] The curvature value of the first surface 1101 of the first rear curved section 111 is K111; the curvature value of the first surface 1101 of the first middle curved section 112 is K112; the curvature value of the first surface 1101 of the first front curved section 113 is K113, wherein K111>K112>K113. In this way, when smoothing the area with a lesser degree of flipping, it can be smoothed by the first front curved section 113 and the first middle curved section 112. When smoothing the area with a more serious degree of flipping, it can be smoothed by the first rear curved section 111 and the first middle curved section 112, and at the same time, the inhibition of the passing speed of the pole piece 50 by the first curved plate is reduced.
[0049] Similarly, the second curved plate includes three second curved sections arranged in sequence along the second direction C2: a second rear curved section 121, a second middle curved section 122 and a second front curved section 123. The second rear curved section 121 and the second middle curved section 122 are arranged at intervals, and the second middle curved section 122 and the second front curved section 123 are arranged at intervals.
[0050] The curvature value of the third surface 1201 of the second rear curved section 121 is K121; the curvature value of the third surface 1201 of the second middle curved section 122 is K122; the curvature value of the third surface 1201 of the second front curved section 123 is K123, wherein K121>K122>K123. Thus, when smoothing the area with a lesser degree of flipping, the second front curved section 123 and the second middle curved section 122 can be used to smooth it; when smoothing the area with a more serious degree of flipping, the second rear curved section 121 and the second middle curved section 122 can be used to smooth it, and at the same time, the second curved plate can reduce the inhibition of the passing speed of the pole piece 50.
[0051] It should be noted that K121 may be equal to K111, K122 may be equal to K112, and K123 may be equal to K113. Of course, it is understandable that K121 may not be equal to K111, K122 may not be equal to K112, and K123 may not be equal to K113.
[0052] In addition, in some embodiments, the first curved plate includes three first curved sections arranged in sequence along the second direction C2: a first rear curved section 111, a first middle curved section 112, and a first front curved section 113, wherein the first rear curved section 111, the first middle curved section 112, and the first front curved section 113 are arranged continuously along the second direction C2. Among them, K111>K112>K113, and at the same time, the first surface 1101 of the first rear curved section 111 and the first surface 1101 of the first middle curved section 112 are smoothly transitioned to each other, and the first surface 1101 of the first middle curved section 112 and the first surface 1101 of the first front curved section 113 are smoothly transitioned to each other.
[0053] The second curved plate includes three second curved sections arranged in sequence along the second direction C2: a second rear curved section 121, a second middle curved section 122 and a second front curved section 123. The second rear curved section 121, the second middle curved section 122 and the second front curved section 123 are connected and arranged along the second direction C2. Among them, K121>K122>K123, and at the same time, the third surface 1201 of the second rear curved section 121 and the third surface 1201 of the second middle curved section 122 are smoothly transitioned to each other, and the third surface 1201 of the second middle curved section 122 and the third surface 1201 of the second front curved section 123 are smoothly transitioned to each other.
[0054] It can be understood that when the various curved segments in the first curved plate are arranged continuously along the second direction and any two adjacent ones are connected by a smooth transition, the various second curved segments can be arranged at intervals along the second direction; similarly, when the various curved segments in the second curved plate are arranged continuously along the second direction and any two adjacent ones are connected by a smooth transition, the various first curved segments can be arranged at intervals along the second direction; various combinations can achieve the same effect and are all solutions to be protected by this application and are not limited here.
[0055] In this way, when smoothing an area with a lighter degree of flipping, it can be smoothed through the first and second front curved sections and the first and second middle curved sections; when smoothing an area with a heavier degree of flipping, it can be smoothed through the first and second rear curved sections and the first and second middle curved sections. At the same time, the inhibition of the passing speed of the pole piece 50 by the first and second curved plates is reduced.
[0056] Of course, in addition to the first embodiment described above, there are other ways to achieve a variable curvature of at least one of the first curved portion and the second curved portion, such as described in the second embodiment:
[0057] The first smoothing member 11 further includes a first pressing member 13 and a second pressing member 14. The first pressing member 13 is disposed at one side of the first curved portion, and the first pressing member 13 is close to and abuts against the first curved portion to change the curvature value of the first curved surface of the first curved portion toward the pole piece 50;
[0058] The second pressing member 14 is disposed at one side of the second curved portion. The second pressing member 14 is close to and abuts against the second curved portion to change the curvature value of the local second curved surface of the second curved portion toward the pole piece 50 .
[0059] Specifically, Figure 4 As shown, the first pressing member 13 may be a first pressing ball, and the second pressing member 14 may be a second pressing ball. The first pressing ball is disposed on one side of the second surface 1102 of the first curved plate, and the first pressing ball can approach or move away from the first curved plate, and then the first pressing ball abuts against a part of the first curved plate, thereby reducing the local curvature value of the first surface 1101 of the first curved plate. In this way, when smoothing the area with a serious degree of flipping, the first pressing ball can be moved away from the first curved plate first, and after the area with a serious degree of flipping enters the first gap, the first pressing ball can be moved close to the first curved plate, thereby applying a large smoothing force to the flipping area, and smoothing it through a part of the first surface 1101 of the first curved plate. The local curvature value of the first surface 1101 of the first curved plate is less than the curvature value of the remaining area of the first surface 1101 of the first curved plate, and at the same time, the inhibition of the passing speed of the pole piece 50 by the first curved plate is slowed down.
[0060] The second pressing ball is arranged on one side of the fourth surface 1202 of the second curved plate, and the second pressing ball can approach or move away from the second curved plate, and then the second pressing ball abuts against a part of the second curved plate, thereby reducing the local curvature value of the third surface 1201 of the second curved plate. In this way, when smoothing the area with a serious degree of flipping, the second pressing ball can be moved away from the second curved plate first, and after the area with a serious degree of flipping enters the first gap, the second pressing ball is moved close to the second curved plate, thereby applying a large smoothing force to the flipping area, and smoothing it through a part of the third surface 1201 of the second curved plate. The local curvature value of the third surface 1201 of the second curved plate is smaller than the curvature value of the remaining area of the third surface 1201 of the second curved plate, and at the same time, the second curved plate slows down the inhibition of the passing speed of the pole piece 50.
[0061] In some embodiments of the present invention, at least one of the first curved portion and the second curved portion is a curved portion made of a magnetic material.
[0062] It is understandable that the first bending plate mentioned above can be a first magnet bending plate, and the second bending plate can be a second magnet bending plate, so that when the pole piece 50 passes between the first magnet bending plate and the second magnet bending plate, the pole piece 50 is demagnetized.
[0063] In some embodiments of the present invention, the smoothing device further includes a second smoothing component 20 .
[0064] The second smoothing assembly 20 includes a third smoothing member 21 and a fourth smoothing member 22 arranged opposite to each other, and there is a second gap between the third smoothing member 21 and the fourth smoothing member 22 for the pole piece 50 to pass through. The pole piece 50 passes through the first gap and the second gap in sequence, and the second gap is equidistant along the first direction C1. The size of the second gap is less than or equal to the minimum size of the first gap.
[0065] In a specific embodiment, as shown in the figure, the third smoothing member 21 can be a third flat plate, and the fourth smoothing member 22 can be a fourth flat plate. The combination of the first curved plate and the second curved plate, the combination of the third flat plate and the fourth flat plate are sequentially arranged along the first direction C1, the first curved plate is connected to the first flat plate as a whole, and the second curved plate is connected to the second flat plate as a whole.
[0066] like Figure 2 As shown, the first gap between the upper end of the first curved plate and the upper end of the second curved plate is d1, the first gap between the lower end of the first curved plate and the lower end of the second curved plate is d2, d2<d1. The second gaps between the third and fourth plane plates are both d3, d3≤d2.
[0067] The pole piece 50 passes through the second gap between the third plane plate and the fourth plane plate along the first direction C1. The third plane plate and the fourth plane plate can further solidify the folded area of the pole piece 50 to prevent the pole piece 50 from returning to the initial state, thereby consolidating the smoothing effect on the folded area.
[0068] It should be noted that, in some implementations, the first curved plate and the first flat plate may not be connected, and there may be a gap between them; the second curved plate and the second flat plate may not be connected, and there may be a gap between them.
[0069] In some embodiments of the present invention, the smoothing device further includes a third smoothing component 30 .
[0070] The third smoothing assembly 30 includes a smoothing roller 31 and a steering arc 32. The smoothing roller 31 is coaxially arranged with the steering arc 32. There is a third gap between the smoothing roller 31 and the steering arc 32 for the pole piece 50 to pass through. The pole piece 50 passes through the first gap, the second gap, and the third gap in sequence. The third gap is equidistant along the first direction C1, wherein the size of the third gap is less than or equal to the size of the second gap.
[0071] In a specific embodiment, as shown in the figure, the steering arc member 32 can be a steering arc plate. The smoothing roller 31 is coaxially arranged with the steering arc plate, and there is a third gap between the smoothing roller 31 and the steering arc plate for the pole piece 50 to pass through. The first curved plate, the first flat plate, and the steering arc plate are connected as a whole. The lower end of the second flat plate is circumscribed with the smoothing roller 31, and there is no mutual interference between the two.
[0072] As shown in FIG. 2 , the second gap between the third plane plate and the fourth plane plate is d3, and the third gap between the smoothing roller 31 and the turning arc plate is d4, where d4≤d3.
[0073] The pole piece 50 passes through the third gap between the smoothing roller 31 and the turning arc plate along the first direction C1. The smoothing roller 31 and the turning arc plate can further solidify the folded area of the pole piece 50, and further consolidate the smoothing effect on the folded area.
[0074] Alternatively, if Figure 2 and Figure 3 As shown, the smoothing device also includes a dust collector 60, a dust removal hollow area 321 is provided on the turning arc plate, and the dust removal port of the dust collector 60 faces the dust removal hollow area 321. In this way, the dust or impurities adsorbed on the pole piece 50 are absorbed by the dust collector 60.
[0075] In some embodiments of the present invention, the smoothing device is provided with two first smoothing members 11 , two second smoothing components 20 , and one third smoothing component 30 .
[0076] A first smoothing member 11, a second smoothing assembly 20, a third smoothing assembly 30, another second smoothing assembly 20, and another first smoothing member 11 are sequentially arranged along the first direction C1. Figure 2 As shown. The two first smoothing members 11 are symmetrically arranged on both sides of the smoothing roller 31, and the two second smoothing components 20 are symmetrically arranged on both sides of the smoothing roller 31. It can be understood that at this time, the first gap on one side of the smoothing roller 31 gradually decreases along the first direction C1, and the first gap on the other side of the smoothing roller 31 gradually increases along the first direction C1.
[0077] In this way, the pole piece 50 is smoothed by multiple smoothing components, thereby improving the flatness of the pole piece 50; at the same time, the multiple smoothing components are arranged roughly in a U shape, which saves space, contributes to the miniaturized design of the smoothing device, and increases the smoothing stroke of the pole piece 50 (the pole ear 51 or the main body 52 of the pole piece 50), thereby avoiding the pole piece 50 from returning to the folded state after being smoothed, thereby consolidating the smoothing effect on the folded area.
[0078] Furthermore, the smoothing device also includes a support frame, and the support frame is used to fix the smoothing roller 31.
[0079] like Figure 2 As shown, the support frame can be a hoop plate 40, on which a hoop structure is provided, and the rotating shaft of the smoothing roller 31 is fixed by the hoop structure. In addition, the first curved plate, the second curved plate, the first plane plate, and the second plane plate can all extend with connecting ears. Each connecting ear is threadedly connected to the hoop plate 40, thereby fixing the first curved plate, the second curved plate, the first plane plate, and the second plane plate.
[0080] The winding device according to the embodiment of the second aspect of the utility model comprises the smoothing device in the first aspect. The winding device has the advantages of the smoothing device, so it will not be described in detail.
[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0082] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.
[0083] In the description of the present invention, "plurality" means two or more.
[0084] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.
[0085] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0087] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A smoothing device, characterized in that: include: A first smoothing component (10), the first smoothing component (10) comprising a first smoothing member (11) and a second smoothing member (12) arranged opposite to each other, a first gap for the pole piece (50) to pass through exists between the first smoothing member (11) and the second smoothing member (12), the first gap gradually decreases along a first direction, the first direction being a moving direction of the pole piece (50), Wherein, the pole piece (50) comprises a pole piece body (52) and a pole ear (51).
2. The smoothing device according to claim 1, characterized in that: The first smoothing member (11) comprises a first curved portion, and the second smoothing member (12) comprises a second curved portion, and the curvature of at least one of the first curved portion and the second curved portion is a variable value.
3. The smoothing device according to claim 2, characterized in that: The first curved portion comprises a plurality of first curved segments arranged in sequence along the second direction, the first curved segments having a first curved surface facing the pole piece (50), and the curvature values of the first curved surfaces of at least two of the plurality of first curved segments being different. The second curved portion comprises a plurality of second curved segments arranged in sequence along the second direction, the second curved segments having a second curved surface facing the pole piece (50), and the curvature values of the second curved surfaces of at least two of the plurality of second curved segments being different. The second direction is perpendicular to the first direction, and the second direction is the width direction of the pole piece (50).
4. The smoothing device according to claim 3, characterized in that: The curvature values of the first curved segments are different, and the first curved segments are arranged at intervals along the second direction, or the first curved segments are arranged continuously along the second direction, and any two adjacent ones are connected by a smooth transition; The curvature values of the second curved segments are different, and the second curved segments are arranged at intervals along the second direction, or the second curved segments are arranged continuously along the second direction, and any two adjacent ones are connected by a smooth transition.
5. The smoothing device according to any one of claims 2 to 4, characterized in that: At least one of the first curved portion and the second curved portion is a curved portion made of a magnetic material.
6. The smoothing device according to claim 1, characterized in that: The invention also comprises a second smoothing assembly (20), wherein the second smoothing assembly (20) comprises a third smoothing member (21) and a fourth smoothing member (22) arranged opposite to each other, and a second gap exists between the third smoothing member and the fourth smoothing member (22) for the pole piece (50) to pass through. The pole piece (50) passes through the first gap and the second gap in sequence, and the second gaps are equidistant along the first direction. The size of the second gap is smaller than or equal to the minimum size of the first gap.
7. The smoothing device according to claim 6, characterized in that: The invention also comprises a smoothing roller (31) and a third smoothing assembly (30), wherein the third smoothing assembly (30) comprises a steering arc-shaped member (32), the smoothing roller (31) and the steering arc-shaped member (32) are coaxially arranged, and a third gap exists between the smoothing roller (31) and the steering arc-shaped member (32) for the pole piece (50) to pass through. The pole piece (50) passes through the first gap, the second gap, and the third gap in sequence, and the third gap is equidistant along the first direction. Wherein, the size of the third gap is smaller than or equal to the size of the second gap.
8. The smoothing device according to claim 7, characterized in that: It also includes a dust collector (60), the turning arc member (32) includes a turning arc plate, a dust removal hollow area (321) is provided on the turning arc plate, and the dust removal port of the dust collector (60) faces the dust removal hollow area (321).
9. The smoothing device according to claim 7, characterized in that: Two first smoothing assemblies (10) are provided, and two second smoothing assemblies (20) are provided. The two first smoothing assemblies (10) are symmetrically arranged on both sides of the smoothing roller (31), and the two second smoothing assemblies (20) are symmetrically arranged on both sides of the smoothing roller (31).
10. A winding device, characterized in that: The invention comprises the smoothing device according to any one of claims 1 to 9.