Rounding mechanism

Abstract

The utility model relates to the field of battery production equipment, and discloses a rounding mechanism which comprises a rolling assembly, a clamping arm assembly and a clamping assembly, the rolling assembly comprises a base, a driving roller and a rolling driving part; the clamping arm assemblies are oppositely arranged on the two sides of the rolling assembly in the first direction. The clamping arm assembly comprises a sliding block, a telescopic piece and a driven roller. The sliding block is slidably arranged on the base. The telescopic piece is used for driving the driven roller to be close to or away from the driving roller in the second direction. The clamping assembly drives the clamping arm assemblies on the two sides to be close to or away from each other in the first direction. The driven rollers are oppositely arranged on the two sides of the driving roller in the first direction. The driven rollers are located on the same side of the driving roller in the second direction. The clamping assembly drives the driven rollers on the two sides to get close to jack up the battery cell, then the battery cell abuts against the driving roller through the telescopic piece, the driving roller rotates to conduct rounding operation, rounding can be conducted on the two ends of the battery cell at the same time through one-time rounding operation, and then the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery production equipment, in particular to a circularizing mechanism. Background Art

[0002] During the production and processing of batteries, after winding the positive and negative electrode plates and the separator into an electrode core, defects such as cross-sectional deformation and bending of the electrode core are likely to occur, which affects the subsequent assembly process of inserting the electrode core into the shell. Therefore, the wound electrode core needs to be circularized to ensure the cylindricity of the electrode core, facilitate the subsequent operation of inserting the electrode core into the shell, and improve the processing quality and qualification rate of the battery.

[0003] The existing circularizing mechanisms usually adopt a structure of clamping jaws cooperating with multiple rollers. During the circularizing process of the electrode core, one end of the electrode core is clamped and fixed by the clamping jaws, and the other end of the electrode core is circularized by the multiple-roller structure. After one end of the electrode core is circularized, it is flipped, and the above steps are repeated to circularize both ends of the electrode core. The existing circularizing mechanism has a cumbersome operation and requires circularizing operations on both ends of the electrode core respectively, which affects the processing efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is:

[0005] The existing circularizing mechanism has a cumbersome operation and affects the processing efficiency.

[0006] To solve the above technical problem, the utility model provides a circularizing mechanism having an intersecting first direction and second direction. The circularizing mechanism includes:

[0007] A roll-pressing assembly, which includes a base, a driving roll, and a roll-pressing driving member; the driving roll is rotatably connected to the base, and the roll-pressing driving member is connected to the driving roll to drive the driving roll to rotate relative to the base;

[0008] A clamping arm assembly, and the number of the clamping arm assemblies is multiple. Each clamping arm assembly is oppositely arranged on both sides of the roll-pressing assembly along the first direction; the clamping arm assembly includes a slider, a telescopic member, and a driven roll; the slider is slidably arranged on the base, the telescopic member is respectively connected to the slider and the driven roll, and the telescopic member is used to drive the driven roll to approach or move away from the driving roll along the second direction; and

[0009] A clamping assembly, which is connected to the clamping arm assemblies on both sides to drive the clamping arm assemblies on both sides to approach or move away from each other along the first direction;

[0010] Wherein, each driven roll is oppositely arranged on both sides of the driving roll along the first direction; each driven roll is located on the same side of the driving roll along the second direction.

[0011] In one embodiment, both the driving roller and the driven roller are cylindrical, and the central axis of the driving roller is parallel to the central axis of the driven roller.

[0012] In one embodiment, the telescopic member is a cylinder;

[0013] The clamping arm assembly further includes an adapter; the adapter is arranged between the telescopic member and the driven roller, the adapter has a U-shaped structure, the driven roller is embedded in the adapter, and the driven roller is rotatably connected to the adapter.

[0014] In one embodiment, the clamping assembly includes a screw rod, a nut sleeve and a clamping driving member; the screw rod is a straight rod extending along the first direction, the nut sleeve is sleeved outside the screw rod, the nut sleeve is threadedly connected to the screw rod, and the clamping driving member is connected to the screw rod to drive the screw rod to rotate.

[0015] In one embodiment, the number of the nut sleeves is multiple, and the nut sleeves are oppositely arranged at both ends of the screw rod in the first direction. The nut sleeves at both ends respectively correspond to and are connected to the sliders of the clamping arm assemblies on both sides, and the thread helix directions at both ends of the screw rod in the first direction are opposite.

[0016] In one embodiment, the clamping assembly further includes a guide rod and a guide block; the guide rod is a straight rod extending along the first direction, the guide block is slidably arranged outside the guide rod, and the guide block is connected to the slider.

[0017] In one embodiment, the base includes a bearing plate and a mounting frame; the bearing plate is a straight plate, and the mounting frame is arranged on one side of the bearing plate in the first direction. The driving roller is rotatably connected to the mounting frame.

[0018] In one embodiment, a through hole is provided on the bearing plate; the through hole penetrates through the bearing plate along the first direction. The clamping assembly is arranged on the side of the bearing plate away from the mounting frame, and the slider passes through the through hole.

[0019] In one embodiment, the circularizing mechanism further has a third direction, and the first direction, the second direction and the third direction intersect pairwise;

[0020] The slider includes an extension part and a limiting part; the extension part is a long strip extending along the first direction, the extension part passes through the through hole, the limiting part is a convex block oppositely arranged on both sides of the extension part in the third direction, and the limiting part abuts against the bearing plate.

[0021] In one embodiment, the mounting bracket includes a connecting portion, a hook portion, and a reinforcing portion; the connecting portion is in a straight plate shape and is connected to the bearing plate, and the driving roller is rotatably connected to the connecting portion; the hook portion is in a straight plate shape, and the extending plane where the hook portion is located is perpendicular to the extending plane where the connecting portion is located, and the roller pressing driving member is connected to the hook portion; the reinforcing portion is in a straight plate shape and extends away from the bearing plate from the connecting portion, the reinforcing portions are oppositely arranged on both sides of the connecting portion in the first direction, and the extending plane where the reinforcing portion is located is perpendicular to the extending plane where the connecting portion is located.

[0022] Compared with the prior art, the beneficial effects of the above-mentioned circularizing mechanism are as follows:

[0023] By driving the clamping arms on both sides of the clamping assembly to approach each other, the distance between the two driven rollers becomes smaller, and thus the battery cell can be lifted. Then, the battery cell on the driven roller is pressed against the driving roller by the telescopic member. By rotating the driving roller, the overall circularizing operation of the battery cell can be performed, realizing the circularizing of both ends of the battery cell simultaneously in one circularizing operation, thereby improving the processing efficiency. Moreover, with the structure of lifting the battery cell by the driven roller and then pressing it against the driving roller, there is no need for a clamping jaw to clamp the battery cell, which can avoid scratching the battery cell by the clamping jaw, thereby improving the processing quality and yield rate of the battery.

[0024] By adjusting the distance between the two driven rollers through the clamping assembly, the lifting operation of battery cells with different specifications and sizes can be realized. And by driving the driven roller to move towards the driving roller through the telescopic member, the battery cells with different specifications and sizes can be clamped and fixed between the driven roller and the driving roller, realizing the circularizing operation of battery cells with different specifications and sizes. Compared with the existing clamping jaw structure, the position of the driven roller in this application can be adjusted in multiple axial directions, and thus has a larger adjustment range to accommodate battery cells with a larger range of sizes, improving the adaptability of use.

[0025] The battery cell is clamped in a triangular distribution by the driving roller and the two driven rollers on both sides, so that during the circularizing process, the pressure distribution on each part of the battery cell is balanced, thereby ensuring the circularizing effect of the battery cell.

[0026] By setting the telescopic member as a cylinder, due to the constant pressure characteristic of the cylinder, it is ensured that the driven roller can press the battery cell against the driving roller with a constant pressure and telescopically, so that the battery cell is always in close contact with the driving roller. In this way, during the circularizing rotation of the elliptical battery cell, the battery cell will not slip, avoiding scratching the battery cell and improving the circularizing effect of the battery cell at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the circularizing mechanism according to an embodiment of the present invention;

[0028] Figure 2 isFigure 1 Exploded structure schematic diagram of the full-circle mechanism;

[0029] Figure 3 is Figure 1 Structure schematic diagram of the middle base;

[0030] Figure 4 is Figure 1 Structure schematic diagram of the middle clamping arm assembly;

[0031] Figure 5 is Figure 1 Structure schematic diagram of the middle clamping assembly.

[0032] The meanings of the reference numerals in the drawings are as follows:

[0033] 100, full-circle mechanism;

[0034] 10, roll-pressing assembly; 11, base; 111, bearing plate; 112, through hole; 115, mounting bracket; 116, connecting portion; 117, hook portion; 118, strengthening portion; 12, driving roller; 13, roll-pressing driving member;

[0035] 20, clamping arm assembly; 21, slider; 211, extension portion; 212, limiting portion; 22, telescopic member; 23, driven roller; 24, connecting frame;

[0036] 30, clamping assembly; 31, screw; 32, nut sleeve; 33, clamping driving member; 34, guide rod; 35, guide block;

[0037] 90, battery cell;

[0038] X, first direction; Y, second direction; Z, third direction. Detailed implementation manners

[0039] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0042] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0045] It should be noted that according to Figure 1 As shown, in the embodiment of the present invention, the X-axis direction, the Y-axis direction and the Z-axis direction intersect pairwise. For the convenience of description, the first direction is defined as the X-axis direction, the second direction is defined as the Y-axis direction, and the third direction is defined as the Z-axis direction. In this embodiment, the X-axis direction and the Y-axis direction are coplanar and relatively perpendicular to each other, and the Z-axis direction is relatively perpendicular to the common plane of the X-axis and the Y-axis. The first direction, the second direction and the third direction are mutually relatively perpendicular. Further explanation, the term "parallel" in this application not only includes the case of absolute parallelism, but also includes the case of approximately parallelism commonly recognized in engineering. For example, "parallel" means that the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is in the state of -1° to 1°; at the same time, "perpendicular" not only includes the case of absolute perpendicularity, but also includes the case of approximately perpendicularity commonly recognized in engineering. For example, "perpendicular" means that the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is in the state of 89° to 91°. Equal distance or equal angle not only includes the case of absolute equality, but also includes the case of approximately equality commonly recognized in engineering, that is, there may be a certain error, such as the tolerance range is in the state of -1% to 1%.

[0046] Please refer to Figures 1 to 5, the circularizing mechanism 100 of an embodiment of the present utility model is used for circularizing the battery cell 90. The circularizing mechanism 100 includes a rolling component 10, a clamping arm component 20, and a clamping component 30. The rolling component 10 includes a base 11, a driving roller 12, and a rolling driving member 13; the driving roller 12 is rotatably connected to the base 11, and the rolling driving member 13 is connected to the driving roller 12 to drive the driving roller 12 to rotate relative to the base 11. The driving roller 12 rotates to roll the battery cell 90 to ensure the cylindricity of the battery cell 90, so as to complete the circularizing operation of the battery cell 90. The number of the clamping arm components 20 is multiple, and each clamping arm component 20 is oppositely arranged on both sides of the rolling component 10 along the first direction; the clamping arm component 20 includes a slider 21, a telescopic member 22, and a driven roller 23; the slider 21 is slidably arranged on the base 11, and the telescopic member 22 is respectively connected to the slider 21 and the driven roller 23. The telescopic member 22 is used to drive the driven roller 23 to approach or move away from the driving roller 12 along the second direction. The clamping component 30 is connected to the clamping arm components 20 on both sides to drive the clamping arm components 20 on both sides to approach or move away from each other along the first direction. Among them, each driven roller 23 is oppositely arranged on both sides of the driving roller 12 along the first direction; each driven roller 23 is located on the same side of the driving roller 12 along the second direction. By oppositely arranging the driven rollers 23 on both sides of the driving roller 12 along the first direction, driving the driven rollers 23 on both sides to approach each other through the clamping component 30 to lift the battery cell 90, and then controlling the driven rollers 23 to move towards the direction close to the driving roller 12 through the telescopic member 22, the battery cell 90 can be clamped and fixed in a triangular structure by the driven rollers 23 on both sides and the driving roller 12 in the middle. Furthermore, the driving roller 12 can circularize both ends of the battery cell 90 simultaneously in one circularizing operation, thereby improving the processing efficiency.

[0047] Furthermore, the base 11 includes a bearing plate 111 and a mounting frame 115. The bearing plate 111 is in a straight plate shape, and the mounting frame 115 is arranged on one side of the bearing plate 111 in the first direction. The bearing plate 111 is used to support the clamping arm component 20 and the clamping component 30, and the mounting frame 115 is used to support the driving roller 12 and the rolling driving member 13. The driving roller 12 is in a cylindrical shape, and the driving roller 12 is rotatably connected to the mounting frame 115. The central axis of the driving roller 12 extends along the third direction. The rolling driving member 13 is mounted on the mounting frame 115, and the rolling driving member 13 is connected to the driving roller 12 to drive the driving roller 12 to rotate relative to the mounting frame 115. In this embodiment, the rolling driving member 13 is a motor.

[0048] Further, the mounting bracket 115 includes a connecting portion 116, a hooking portion 117, and a strengthening portion 118. The connecting portion 116 is in a straight plate shape. The connecting portion 116 is connected to the bearing plate 111. The driving roller 12 is rotatably connected to the connecting portion 116. The driving roller 12 is disposed on a side of the connecting portion 116 away from the bearing plate 111. The hooking portion 117 is in a straight plate shape. The hooking portion 117 extends from the connecting portion 116 toward the driving roller 12. The extending plane where the hooking portion 117 is located is perpendicular to the extending plane where the connecting portion 116 is located. The rolling pressure driving member 13 is connected to the hooking portion 117. The rolling pressure driving member 13 passes through the hooking portion 117 and is connected to the driving roller 12. The strengthening portion 118 is in a straight plate shape and extends from the connecting portion 116 away from the bearing plate 111. The strengthening portions 118 are oppositely disposed on two sides of the connecting portion 116 in the first direction. The extending plane where the strengthening portion 118 is located is perpendicular to the extending plane where the connecting portion 116 is located. The strengthening portion 118 is used to improve the load-bearing strength of the connecting portion 116, thereby avoiding deformation of the mounting bracket 115 caused by the load during the process of circularizing the battery cell 90. Deformation of the mounting bracket 115 will cause uneven distribution of the acting force of the driving roller 12 on the battery cell 90. Therefore, the stability of circularizing the battery cell 90 is improved through the strengthening portion 118.

[0049] Further, a through hole 112 is provided on the bearing plate 111. The through hole 112 penetrates the bearing plate 111 in the first direction. The clamping assembly 30 is disposed on a side of the bearing plate 111 away from the mounting bracket 115. The slider 21 passes through the through hole 112. In this embodiment, the slider 21 includes an extending portion 211 and a limiting portion 212. The extending portion 211 is in a long strip shape and extends in the first direction. The extending portion 211 passes through the through hole 112. The limiting portion 212 is in a convex block shape and is oppositely disposed on two sides of the extension in the third direction. The limiting portion 212 abuts against the bearing plate 111 to improve the smoothness of the movement of the slider 21 relative to the bearing plate 111. At the same time, when the clamping arm assembly 20 presses the battery cell 90 against the driving roller 12, the slider 21 will bear the load from the battery cell 90. By abutting the limiting portion 212 against the bearing plate 111, a part of the load borne by the slider 21 is absorbed by the bearing plate 111, improving the load-bearing limit of the slider 21, and further improving the reliability of the operation of the clamping arm assembly 20.

[0050] Further, the telescopic member 22 is installed at one end of the extension portion 211 of the slider 21 close to the driving roller 12. The telescopic member 22 has a movable end, and the movable end can perform telescopic movement along the second direction. The driven roller 23 is arranged on the movable end of the telescopic member 22, and thus the driven roller 23 is driven by the telescopic member 22 to move in the second direction. The driven roller 23 has a cylindrical structure, and the central axis of the driven roller 23 is parallel to the central axis of the driving roller 12. The driven roller 23 is used to press the battery cell 90 against the driving roller 12. In this embodiment, the telescopic member 22 is a cylinder; since the cylinder is a constant-pressure component, the telescopic member 22 presses the battery cell 90 against the driving roller 12 with a constant pressure. In this way, during the process of circularizing the elliptical battery cell 90, it can also ensure the close fit between the battery cell 90 and the driving roller 12, avoid the battery cell 90 from slipping during the circularizing process, and improve the circularizing effect on the battery cell 90.

[0051] Further, the clamping arm assembly 20 further includes a connecting frame 24. The connecting frame 24 is arranged between the telescopic member 22 and the driven roller 23. The connecting frame 24 has a U-shaped structure. The driven roller 23 is embedded in the connecting frame 24. The two ends of the connecting frame 24 are respectively connected to the two ends of the driven roller 23 in the third direction, and the driven roller 23 is rotatably connected to the connecting frame 24. In this embodiment, the number of the clamping arm assemblies 20 is two. The two clamping arm assemblies 20 are oppositely arranged on both sides of the driving roller 12. The openings of the connecting frames 24 of the two clamping arm assemblies 20 face each other. Thus, by driving the two clamping arm assemblies 20 on both sides to approach each other, the battery cell 90 can be lifted by the driven rollers 23 on both sides approaching each other. Then, the telescopic member 22 drives the driven roller 23 to move towards the driving roller 12. The driving roller 12 and the driven rollers 23 on both sides form a triangular distribution to clamp the battery cell 90 in the middle, and then the driving roller 12 drives the battery cell 90 to rotate to realize the rolling and circularizing operation of the battery cell 90.

[0052] Further, the clamping assembly 30 is connected to the sliders 21 of the two clamping arm assemblies 20 to drive the two sliders 21 to approach or move away from each other. It can be understood that the clamping assembly 30 can be one of a cylinder mechanism, a hydraulic cylinder mechanism, a gear and rack mechanism, a linear motor or a lead screw mechanism. The specific structure of the clamping assembly 30 is not limited here, as long as the clamping assembly 30 can drive the two sliders 21 to approach each other, so that the driven rollers 23 on both sides approach each other to lift the battery cell 90.

[0053] Further, the clamping assembly 30 includes a screw rod 31, a screw sleeve 32 and a clamping driving member 33. The screw rod 31 is in a straight rod shape and extends along the first direction. The screw rod 31 is disposed on the side of the bearing plate 111 away from the mounting bracket 115, and the screw rod 31 is rotatably connected to the bearing plate 111. The screw sleeve 32 is sleeved outside the screw rod 31, and the screw sleeve 32 is threadedly connected to the screw rod 31. The screw sleeve 32 is connected to the slider 21. When the screw rod 31 rotates, it will drive the screw sleeve 32 to move along the first direction. The clamping driving member 33 is mounted on the bearing plate 111, and the clamping driving member 33 is connected to the screw rod 31 to drive the screw rod 31 to rotate. In this embodiment, the number of the screw sleeves 32 is multiple, and the screw sleeves 32 are oppositely disposed at both ends of the screw rod 31 in the first direction. The screw sleeves 32 at both ends respectively correspond to and are connected to the sliders 21 of the clamping arm assemblies 20 on both sides. The thread pitches at both ends of the screw rod 31 in the first direction are opposite to ensure that when the screw rod 31 rotates, it simultaneously drives the screw sleeves 32 at both ends to approach or separate from each other. When the screw sleeve 32 moves, it will drive the slider 21 to move together, thereby realizing synchronous driving of the sliders 21 on both sides to approach or separate from each other. It can be understood that the number of the screw sleeves 32 is two, and the two screw sleeves 32 are respectively mounted on the sliders 21 on both sides.

[0054] Further, the clamping assembly 30 further includes a guide rod 34 and a guide block 35. The guide rod 34 is in a straight rod shape and extends along the first direction. The guide rod 34 is arranged parallel to the screw rod 31, and the guide rod 34 passes through the limiting portion 212 of the slider 21. The guide block 35 is slidably disposed outside the guide rod 34, and the guide block 35 is connected to the slider 21. The movement of the slider 21 is guided by the guide block 35 and the guide rod 34 to improve the stability of the movement of the slider 21. In this embodiment, the number of the guide rods 34 is two, and the two guide rods 34 respectively pass through the limiting portions 212 on both sides. The number of the guide blocks 35 is two, and the two guide blocks 35 are respectively fixed on the limiting portions 212 on both sides. The guide blocks 35 and the guide rods 34 are arranged in one-to-one correspondence to ensure synchronous guiding of both sides of the slider 21 to prevent the slider 21 from deflecting and improve the stability of the translation of the slider 21.

[0055] In summary, the embodiment of the present utility model provides a full-circle mechanism 100, and its beneficial effects are as follows:

[0056] By driving the clamping arms 20 on both sides to approach each other through the clamping assembly 30, the distance between the driven rollers 23 on both sides becomes smaller, and thus the battery cell 90 can be lifted. Then, the battery cell 90 on the driven rollers 23 is pressed against the driving roller 12 through the telescopic member 22. By rotating the driving roller 12, the entire circularization operation can be performed on the battery cell 90, realizing the circularization of both ends of the battery cell 90 simultaneously in one circularization operation, thereby improving the processing efficiency. Moreover, with the structure of lifting the battery cell 90 by the driven rollers 23 and then pressing it against the driving roller 12, there is no need for clamping jaws to clamp the battery cell 90, which can avoid scratching the battery cell 90 by the clamping jaws, thereby improving the processing quality and yield rate of the battery.

[0057] The distance between the driven rollers 23 on both sides is adjusted through the clamping assembly 30 to realize the lifting operation of battery cells 90 with different specifications and sizes. And the telescopic member 22 is used to drive the driven rollers 23 to move towards the driving roller 12, so as to clamp and fix the battery cells 90 with different specifications and sizes between the driven rollers 23 and the driving roller 12, realizing the circularization operation of battery cells 90 with different specifications and sizes. Compared with the existing clamping jaw structure, the position of the driven rollers 23 in this application can be adjusted in multiple axes, and thus has a larger adjustment range to accommodate battery cells 90 with a larger range of sizes, improving the adaptability of use.

[0058] The battery cell 90 is clamped by the driving roller 12 and the driven rollers 23 on both sides in a triangular distribution, so that during the circularization process, the pressure distribution on each part of the battery cell 90 is balanced, thereby ensuring the circularization effect of the battery cell 90.

[0059] By setting the telescopic member 22 as a cylinder, due to the constant pressure characteristic of the cylinder, it is ensured that the driven rollers 23 can press the battery cell 90 against the driving roller 12 with a constant pressure and telescopically, so that the battery cell 90 is always in close contact with the driving roller 12. In this way, during the circular rotation of the elliptical battery cell 90, the battery cell 90 will not slip, avoiding scratching the battery cell 90, and at the same time improving the circularization effect of the battery cell 90.

[0060] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0061] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A full-circle mechanism (100) having a first direction (X) and a second direction (Y) intersecting each other, characterized in that: The full circle mechanism (100) comprises: A rolling assembly (10), the rolling assembly (10) comprising a base (11), an active roller (12) and a rolling drive member (13); the active roller (12) is rotatably connected to the base (11), and the rolling drive member (13) is connected to the active roller (12) to drive the active roller (12) to rotate relative to the base (11); A clamping arm assembly (20), wherein the number of the clamping arm assemblies (20) is plural, and each of the clamping arm assemblies (20) is relatively arranged on both sides of the rolling assembly (10) along the first direction (X); the clamping arm assembly (20) comprises a slider (21), a telescopic member (22) and a driven roller (23); the slider (21) is slidably arranged on the base (11), the telescopic member (22) is respectively connected to the slider (21) and the driven roller (23), and the telescopic member (22) is used to drive the driven roller (23) along the second direction (Y) to approach or move away from the active roller (12); and A clamping assembly (30) connected to the clamping arm assemblies (20) on both sides to drive the clamping arm assemblies (20) on both sides to move closer to or farther from each other along the first direction (X); Wherein, each of the driven rollers (23) is relatively arranged on both sides of the active roller (12) along the first direction (X); and each of the driven rollers (23) is located on the same side of the active roller (12) along the second direction (Y).

2. The full-circle mechanism (100) according to claim 1, characterized in that: The active roller (12) and the driven roller (23) are both cylindrical, and the central axis of the active roller (12) is parallel to the central axis of the driven roller (23).

3. The full-circle mechanism (100) according to claim 1, characterized in that: The telescopic member (22) is a cylinder; The clamping arm assembly (20) further comprises a connecting frame (24); the connecting frame (24) is arranged between the telescopic member (22) and the driven roller (23); the connecting frame (24) is a U-shaped structure; the driven roller (23) is embedded in the connecting frame (24); and the driven roller (23) is rotatably connected to the connecting frame (24).

4. The full-circle mechanism (100) according to claim 1, characterized in that: The clamping assembly (30) comprises a screw rod (31), a threaded sleeve (32) and a clamping drive member (33); the screw rod (31) is in the shape of a straight rod and extends along the first direction (X); the threaded sleeve (32) is sleeved on the outside of the screw rod (31); the threaded sleeve (32) is threadedly connected to the screw rod (31); and the clamping drive member (33) is connected to the screw rod (31) to drive the screw rod (31) to rotate.

5. The full-circle mechanism (100) according to claim 4, characterized in that: The number of the screw sleeves (32) is plural, and each of the screw sleeves (32) is relatively arranged at two ends of the screw rod (31) in the first direction (X). The screw sleeves (32) located at the two ends correspond to the sliders (21) of the clamping arm assemblies (20) connected to the two sides, and the screw threads at the two ends of the screw rod (31) in the first direction (X) have opposite rotation directions.

6. The full-circle mechanism (100) according to claim 4, characterized in that: The clamping assembly (30) further comprises a guide rod (34) and a guide block (35); the guide rod (34) is in the shape of a straight rod and extends along a first direction (X); the guide block (35) is slidably disposed on the outside of the guide rod (34); and the guide block (35) is connected to the slider (21).

7. The full-circle mechanism (100) according to claim 1, characterized in that: The base (11) comprises a bearing plate (111) and a mounting frame (115); the bearing plate (111) is in the shape of a straight plate, the mounting frame (115) is arranged on one side of the bearing plate (111) in a first direction (X), and the active roller (12) is rotatably connected to the mounting frame (115).

8. The full-circle mechanism (100) according to claim 7, characterized in that: The carrier plate (111) is provided with a through-opening (112); the through-opening (112) penetrates the carrier plate (111) along a first direction (X); the clamping assembly (30) is arranged on a side of the carrier plate (111) away from the mounting frame (115); and the sliding block (21) passes through the through-opening (112).

9. The full-circle mechanism (100) according to claim 8, characterized in that: The full-circle mechanism (100) further has a third direction (Z), and the first direction (X), the second direction (Y) and the third direction (Z) intersect in pairs; The slider (21) comprises an extension portion (211) and a limiting portion (212); the extension portion (211) is in the shape of a long strip extending along a first direction (X), the extension portion (211) passes through the through opening (112), the limiting portion (212) is in the shape of a convex block and is relatively arranged on both sides of the extension portion (211) in the third direction (Z), and the limiting portion (212) is in contact with the supporting plate (111).

10. The full-circle mechanism (100) according to claim 7, characterized in that: The mounting frame (115) comprises a connecting portion (116), a hooking portion (117) and a reinforcing portion (118); the connecting portion (116) is in a straight plate shape and is connected to the bearing plate (111); the active roller (12) is rotatably connected to the connecting portion (116); the hooking portion (117) is in a straight plate shape, the extending plane where the hooking portion (117) is located is perpendicular to the extending plane where the connecting portion (116) is located, and the roller driving member (13) is connected to the hooking portion (117); the reinforcing portion (118) is in a straight plate shape and extends from the connecting portion (116) in a direction away from the bearing plate (111); the reinforcing portion (118) is relatively arranged on both sides of the connecting portion (116) in the first direction (X), and the extending plane where the reinforcing portion (118) is located is perpendicular to the extending plane where the connecting portion (116) is located.

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