Lithium battery pole piece flattening and pressing mechanism

Abstract

The utility model particularly relates to a lithium battery pole piece flattening and pressing mechanism, and belongs to the technical field of pole piece flattening equipment. The lithium battery pole piece flattening and pressing mechanism comprises a flattening roller, two mounting parts and a connecting assembly, the smoothing roller is provided with a rotating shaft, the two installation parts are arranged on the two sides of the rotating shaft respectively in the axial direction of the rotating shaft, the installation parts are provided with shaft holes, and the rotating shaft is inserted into the shaft holes and is in clearance fit with the shaft holes. The connecting assembly comprises a connecting part and a connecting bolt, the connecting part and the smoothing roller are arranged at intervals in the first direction, the mounting part is provided with a strip-shaped hole extending in the first direction, and the connecting bolt is in threaded connection with the connecting part through the strip-shaped hole. According to the flattening device, the mounting part and the connecting part are detachably matched, on one hand, the flattening roller, the mounting part or the connecting part can be conveniently maintained, the device is more convenient to maintain, on the other hand, due to the detachable structure of the mounting part and the connecting part, the damaged part can be independently replaced during maintenance, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pole piece smoothing equipment, and in particular relates to a lithium battery pole piece smoothing and pressing mechanism. Background Art

[0002] Lithium battery materials are at the upstream of the entire lithium battery industry chain. Pole materials are an important component of lithium batteries, which directly affect the electrochemical properties of lithium batteries, directly determine the energy density and safety of batteries, and thus affect the overall performance of batteries.

[0003] The production process of lithium batteries includes the winding process of the pole piece, that is, winding the pole piece to form a cylindrical structure. During the winding process, the pole piece may be uneven, that is, the radius of the cylindrical structure formed by the pole piece is inconsistent. At this time, a smoothing device is needed to smooth the pole piece. The smoothing device usually includes a frame and a smoothing roller. The smoothing roller is rotatably connected to the frame, and the smoothing roller contacts the pole piece, applies pressure to the pole piece to achieve the purpose of smoothing.

[0004] The inventors found that during the long-term production process, the smoothing roller or the frame may be deformed due to the force of the pole piece, resulting in a smoothing effect that cannot meet the requirements. The traditional frame is an integral structure and can only be replaced as a whole, resulting in high equipment maintenance costs. Utility Model Content

[0005] The utility model aims to provide a lithium battery pole piece smoothing and pressing mechanism, which is easy to maintain and can reduce the maintenance cost of the smoothing device.

[0006] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: the embodiment of the present application provides a lithium battery pole piece smoothing and pressing mechanism, including a smoothing roller, two mounting parts and a connecting assembly. The smoothing roller is provided with a rotating shaft, and along the axial direction of the rotating shaft, the two mounting parts are respectively arranged on both sides of the rotating shaft, and the mounting part is provided with an axial hole, and the rotating shaft is inserted into the axial hole, and the rotating shaft and the axial hole are clearance-matched. The connecting assembly includes a connecting part and a connecting bolt, and along the first direction, the connecting part and the smoothing roller are arranged at intervals, and the mounting part is provided with a strip hole extending along the first direction, and the connecting bolt is threadedly connected to the connecting part via the strip hole.

[0007] In some embodiments, two strip-shaped holes are provided, and the two strip-shaped holes are arranged in parallel and spaced apart along the second direction, and the second direction is perpendicular to the first direction.

[0008] In some embodiments, an adjustment assembly is also included, the adjustment assembly includes an adjustment bolt, the adjustment bolt is rotatably connected to the connecting portion, the axis of the adjustment bolt extends along the first direction, and the adjustment bolt is threadedly connected to the mounting portion.

[0009] In some embodiments, the adjustment assembly further includes a mounting seat, the mounting seat includes a first portion and a second portion which are bent, the first portion is connected to the connecting portion, and the adjustment bolt is rotatably connected to the second portion.

[0010] In some embodiments, the adjustment assembly also includes a mounting seat, which is connected to the connecting portion. Along the axial direction of the adjusting bolt, two abutment portions are arranged at intervals on the adjusting bolt. The mounting seat is provided with a first notch through groove. The notch of the first notch through groove is arranged on one side of the mounting seat along a third direction. The third direction is perpendicular to the first direction. The adjusting bolt is passed through the first notch through groove, and the mounting seat is partially arranged between the two abutment portions.

[0011] In some embodiments, the mounting seat is connected to the connecting portion via fixing bolts, and the number of the fixing bolts is greater than or equal to two.

[0012] In some embodiments, the mounting portion is provided with a locking bolt, and the mounting portion is provided with a locking screw hole penetrating the side wall of the shaft hole, the locking bolt is threadedly connected to the locking screw hole, and the locking bolt abuts against the rotating shaft.

[0013] In some embodiments, the connecting portion is provided with a second notch groove, the second notch groove passes through the connecting portion along the first direction, the notch of the second notch groove is provided on one side of the connecting portion along a third direction, the third direction is perpendicular to the first direction, and the mounting portion is accommodated in the second notch groove.

[0014] In some embodiments, a bearing is also included, wherein the inner ring of the bearing is sleeved on the rotating shaft, and the smoothing roller is sleeved on the outer ring.

[0015] In some embodiments, along the axial direction of the rotating shaft, the width of the connecting portion at both sides is greater than the width of the middle portion of the connecting portion.

[0016] The utility model has the following beneficial effects:

[0017] 1. The mounting part and the connecting part are connected by connecting bolts, so that the mounting part and the connecting part can be detachably matched. On the one hand, it is convenient to maintain the smoothing roller, the mounting part or the connecting part, making the maintenance of the device more convenient. On the other hand, the detachable structure of the mounting part and the connecting part allows the damaged parts to be replaced separately during maintenance, reducing the maintenance cost.

[0018] 2. The mounting part is connected to the connecting part by connecting bolts, and the connecting bolts are inserted into the strip holes, so that the position of the mounting part relative to the connecting part can be adjusted. At the same time, the clearance between the rotating shaft and the shaft hole is matched, so that the smoothing roller can rotate within a certain range relative to the shaft hole. After long-term use, the position of the smoothing roller can be fine-tuned, which increases the working cycle and service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural schematic diagram of the lithium battery pole piece smoothing and pressing mechanism of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the abutting portion of the utility model.

[0021] Figure numbers: 1-smoothing roller, 2-rotating shaft, 3-mounting part, 4-axial hole, 5-locking screw hole, 6-bar hole, 7-second notch through slot, 8-first notch through slot, 9-adjusting bolt, 10-mounting seat, 11-connecting part, 12-resting part, 13-clamping part, 14-limiting part, 15-protruding part. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply 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 understood as a limitation on the present invention.

[0024] See also Figure 1 The embodiment of the present application provides a lithium battery pole piece smoothing and pressing mechanism, including a smoothing roller 1, two mounting parts 3 and a connecting assembly. The smoothing roller 1 is provided with a rotating shaft 2. Along the axial direction of the rotating shaft 2, the two mounting parts 3 are respectively arranged on both sides of the rotating shaft 2. The mounting part 3 is provided with an axial hole 4. The rotating shaft 2 is inserted into the axial hole 4. The rotating shaft 2 and the axial hole 4 are clearance-matched. The connecting assembly includes a connecting part 11 and a connecting bolt. Along the first direction, the connecting part 11 and the smoothing roller 1 are arranged at intervals. The mounting part 3 is provided with a strip hole 6 extending along the first direction. The connecting bolt is threadedly connected to the connecting part 11 via the strip hole 6.

[0025] The first direction may be the direction indicated by the Z axis in the figure.

[0026] The smoothing roller 1 is used to smooth the pole piece. Specifically, the smoothing roller 1 and the winding roller for winding the pole piece can be arranged in parallel and at intervals. The winding roller rotates to wind the pole piece. When the cylindrical structure formed by winding the pole piece becomes uneven, the smoothing roller 1 can contact the part with a larger radius of the cylindrical structure and apply pressure to it to achieve the purpose of smoothing.

[0027] The rotating shaft 2 of the smoothing roller 1 is used to enable the smoothing roller 1 to be rotatably connected to the mounting portion 3 .

[0028] The rotating shaft 2 is inserted into the shaft hole 4, so that the smoothing roller 1 can be rotatably connected with the mounting portion 3. The rotating shaft 2 and the shaft hole 4 are clearance-matched, so that the mounting portion 3 can move along the radial direction of the rotating shaft 2 to adjust the posture of the smoothing roller 1.

[0029] The connecting portion 11 can be used to connect the device to other equipment, and the two mounting portions 3 are connected to the connecting portion 11 , so that the mounting portions 3 and the connecting portion 11 can form an integral structure for supporting the smoothing roller 1 .

[0030] The mounting portion 3 is connected to the connecting portion 11 via connecting bolts, which are passed through the strip holes 6 so that the position of the mounting portion 3 relative to the connecting portion 11 can be adjusted. Specifically, by loosening the connecting bolts, the mounting portion 3 can move along the strip holes 6 relative to the connecting portion 11. Conversely, by tightening the connecting bolts, the position of the mounting portion 3 relative to the connecting portion 11 is fixed.

[0031] The mounting portion 3 and the connecting portion 11 are connected by connecting bolts, so that the mounting portion 3 and the connecting portion 11 can be detachably matched. On the one hand, it is easy to maintain the smoothing roller 1, the mounting portion 3 or the connecting portion 11, making the maintenance of the device more convenient. On the other hand, the detachable structure of the mounting portion 3 and the connecting portion 11 allows the damaged parts to be replaced separately during maintenance, thereby reducing the maintenance cost.

[0032] The mounting portion 3 is connected to the connecting portion 11 by connecting bolts, and the connecting bolts are inserted into the strip holes 6, so that the position of the mounting portion 3 relative to the connecting portion 11 can be adjusted. At the same time, the rotating shaft 2 and the shaft hole 4 are clearance-matched, so that the smoothing roller 1 can rotate within a certain range relative to the shaft hole 4. After long-term use, the position of the smoothing roller 1 can be fine-tuned, which increases the working cycle and service life of the device.

[0033] See also Figure 1 In some embodiments, two strip-shaped holes 6 are provided, and the two strip-shaped holes 6 are arranged in parallel and spaced apart along the second direction, and the second direction is perpendicular to the first direction.

[0034] The second direction may be the direction indicated by the X-axis in the figure.

[0035] Correspondingly, the number of connecting bolts is also two.

[0036] On one hand, the two strip holes 6 increase the locking effect of the connecting bolts on the mounting part 3 , and on the other hand, the two connecting bolts can limit the moving direction of the mounting part 3 , thereby improving the moving accuracy of the mounting part 3 .

[0037] See also Figure 1In some embodiments, an adjustment component is also included, the adjustment component includes an adjustment bolt 9, the adjustment bolt 9 is rotatably connected to the connecting portion 11, the axis of the adjustment bolt 9 extends along the first direction, and the adjustment bolt 9 is threadedly connected to the mounting portion 3.

[0038] The adjusting bolt 9 is threadedly connected to the mounting portion 3 . When the adjusting bolt 9 is turned, the adjusting bolt 9 can drive the mounting portion 3 to move, thereby achieving the purpose of adjusting the position of the mounting portion 3 .

[0039] See also Figure 1 In some embodiments, the adjustment assembly further includes a mounting seat 10, the mounting seat 10 includes a first portion and a second portion that are bent, the first portion is connected to the connecting portion 11, and the adjustment bolt 9 is rotatably connected to the second portion.

[0040] The first part and the second part can be bent at 90 degrees.

[0041] The first part and the second part are bent, so that the position of the adjusting bolt 9 relative to the connecting portion 11 can be easily adjusted through the mounting seat 10. For example, the length direction of the first part can extend along the first direction, and the position of the adjusting bolt 9 relative to the connecting portion 11 along the first direction can be adjusted by increasing the length of the first part.

[0042] See also Figure 1 In some embodiments, the adjustment assembly also includes a mounting seat 10, which is connected to the connecting portion 11. Along the axial direction of the adjusting bolt 9, the adjusting bolt 9 is provided with two abutment portions 12 at intervals. The mounting seat 10 is provided with a first notch through groove 8. The notch of the first notch through groove 8 is provided on one side of the mounting seat 10 along a third direction, and the third direction is perpendicular to the first direction. The adjusting bolt 9 is passed through the first notch through groove 8, and the mounting seat 10 is partially provided between the two abutment portions 12.

[0043] The third direction may be the direction shown by the Y axis in the figure, and the first direction, the second direction and the third direction may be perpendicular to each other.

[0044] By inserting the adjusting bolt 9 into the first notch slot 8 from the notch of the first notch slot 8, the adjusting bolt 9 can be rotated relative to the mounting seat 10. The mounting seat 10 is partially disposed between the two abutting portions 12, so that the position of the adjusting bolt 9 relative to the first notch slot 8 can be limited by the abutting portions 12. The notch of the first notch slot 8 facilitates the removal of the adjusting bolt 9 therefrom.

[0045] Conventionally, the abutment portion 12 may be formed by machining the adjustment bolt 9 .

[0046] See also Figure 2 In this embodiment, the abutting portion 12 may also be of the following structure:

[0047] The abutting portion 12 is in the shape of a circular ring with a notch. The abutting portion 12 is sleeved on the adjusting bolt 9. The inner wall surface of the adjusting portion is provided with a plurality of protrusions 15 for clamping into the threads of the adjusting bolt 9, thereby reducing the risk of axial movement of the abutting portion 12 relative to the adjusting bolt 9 when the abutting portion 12 is sleeved on the adjusting bolt 9. The clamping portion 13 is provided at both ends of the abutting portion 12. The clamping portion 13 includes a third portion, a fourth portion and a fifth portion that are bent. The third portion is connected to the abutting portion 12. The third portion, the fourth portion and the fifth portion form a concave structure with an opening facing the end face of the abutting portion 12. The two ends of the abutting portion 12 are connected by a limiting portion 14. The two sides of the limiting portion 14 are provided with matching portions corresponding to the two clamping portions 13. The matching portion includes a sixth portion and a seventh portion that are bent. The sixth portion is connected to the limiting portion 14. An accommodating space is formed between the limiting portion 14 and the seventh portion. The fifth portion is accommodated in the accommodating space. The seventh portion is clamped in the concave structure. The sixth portion abuts against the end face of the abutting portion 12.

[0048] The abutment portion 12 is sleeved on the adjusting bolt 9, so that the abutment portion 12 and the adjusting bolt 9 are detachably connected. When the abutment portion 12 is worn, the abutment portion 12 can be replaced. The two ends of the abutment portion 12 are closed by the limiting portion 14, so that the abutment portion 12 can form a closed sleeve structure, reducing the risk of the abutment portion 12 falling off the adjusting bolt 9. By reasonably setting the length of the limiting portion 14, multiple abutment portions 12 can be overlapped and used, reducing the risk of axial displacement of the abutment portion 12 relative to the adjusting bolt 9.

[0049] In some embodiments, the mounting seat 10 is connected to the connecting portion 11 by fixing bolts, and the number of the fixing bolts is greater than or equal to two.

[0050] The plurality of fixing bolts, on one hand, increase the connection strength between the mounting base 10 and the connecting portion 11 , and on the other hand, reduce the risk of the mounting base 10 rotating relative to the connecting portion 11 .

[0051] See also Figure 1 In some embodiments, the mounting portion 3 is provided with a locking bolt, and the mounting portion 3 is provided with a locking screw hole 5 that passes through the side wall of the shaft hole 4. The locking bolt is threadedly connected to the locking screw hole 5, and the locking bolt abuts against the rotating shaft 2.

[0052] In this embodiment, the locking screw holes 5 can be symmetrically arranged on both sides of the mounting portion 3 , and the two locking screw holes 5 are respectively provided with locking bolts, thereby improving the fixing effect of the rotating shaft 2 .

[0053] The locking bolt is threadedly connected to the locking screw hole 5 , and the locking screw hole 5 is connected to the shaft hole 4 . By tightening the locking bolt, the locking bolt can be pressed against the rotating shaft 2 , thereby locking the rotating shaft 2 in the shaft hole 4 .

[0054] In some embodiments, the connecting portion 11 is provided with a second notch groove 7, the second notch groove 7 penetrates the connecting portion 11 along the first direction, the notch of the second notch groove 7 is provided on one side of the connecting portion 11 along the third direction, the third direction is perpendicular to the first direction, and the mounting portion 3 is accommodated in the second notch groove 7.

[0055] The second notch through groove 7 is used to form a slideway structure. The second notch through groove 7 can limit the moving direction of the mounting portion 3 relative to the connecting portion 11 , thereby improving the moving accuracy of the mounting portion 3 .

[0056] Furthermore, the second notch through groove 7 can play a role in installation and positioning of the installation portion 3 , thereby improving the installation efficiency of the installation portion 3 .

[0057] Furthermore, the second notch through groove 7 has a notched structure, which facilitates the removal of the mounting portion 3 therefrom.

[0058] In some embodiments, a bearing is also included, wherein the inner ring of the bearing is sleeved on the rotating shaft 2, and the smoothing roller 1 is sleeved on the outer ring.

[0059] The bearing is used to enable the smoothing roller 1 to rotate relative to the rotating shaft 2. In addition, since the inner ring and the outer ring of the bearing have a matching gap, the gap allows the smoothing roller 1 to move slightly relative to the rotating shaft 2, so that when the position of the mounting portion 3 is adjusted, the posture of the smoothing roller 1 against the pole piece can be adjusted.

[0060] See also Figure 1 In some embodiments, along the axial direction of the rotating shaft 2 , the width of the two sides of the connecting portion 11 is greater than the width of the middle portion of the connecting portion 11 .

[0061] The width direction of the connection portion 11 refers to the dimension of the connection portion 11 in a direction perpendicular to the axial direction of the rotation shaft 2 .

[0062] By widening both sides of the connection portion 11 , the risk of deformation of the connection portion 11 is reduced, the service life of the device is increased, and the cost is reduced compared to widening the entire connection portion 11 .

[0063] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made by ordinary technicians in this field to the technical solutions of the present invention should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A lithium battery pole piece flattening and pressing mechanism, characterized in that: include: A smoothing roller (1) is provided with a rotating shaft (2); Two mounting parts (3), along the axial direction of the rotating shaft (2), the two mounting parts (3) are respectively arranged on both sides of the rotating shaft (2), the mounting parts (3) are provided with shaft holes (4), the rotating shaft (2) is inserted into the shaft holes (4), and the rotating shaft (2) and the shaft holes (4) are clearance-matched; A connecting assembly comprises a connecting portion (11) and a connecting bolt, wherein the connecting portion (11) and the smoothing roller (1) are arranged at intervals along a first direction, the mounting portion (3) is provided with a strip hole (6) extending along the first direction, and the connecting bolt is threadedly connected to the connecting portion (11) via the strip hole (6).

2. The lithium battery pole piece smoothing and pressing mechanism according to claim 1, characterized in that: The number of the strip-shaped holes (6) is two, and the two strip-shaped holes (6) are arranged in parallel and spaced apart along a second direction, wherein the second direction is perpendicular to the first direction.

3. The lithium battery pole piece smoothing and pressing mechanism according to claim 1, characterized in that: It also includes an adjustment component, which includes an adjustment bolt (9), the adjustment bolt (9) is rotatably connected to the connecting portion (11), the axis of the adjustment bolt (9) extends along the first direction, and the adjustment bolt (9) is threadedly connected to the mounting portion (3).

4. The lithium battery pole piece smoothing and pressing mechanism according to claim 3, characterized in that: The adjustment assembly further comprises a mounting seat (10), wherein the mounting seat (10) comprises a first portion and a second portion which are bent, wherein the first portion is connected to the connecting portion (11), and the adjustment bolt (9) is rotatably connected to the second portion.

5. The lithium battery pole piece smoothing and pressing mechanism according to claim 3, characterized in that: The adjustment assembly further comprises a mounting seat (10), wherein the mounting seat (10) is connected to the connecting portion (11), and along the axial direction of the adjustment bolt (9), the adjustment bolt (9) is provided with two abutment portions (12) at intervals, and the mounting seat (10) is provided with a first notch through groove (8), wherein the notch of the first notch through groove (8) is provided on one side of the mounting seat (10) along a third direction, wherein the third direction is perpendicular to the first direction, the adjustment bolt (9) is passed through the first notch through groove (8), and the mounting seat (10) is partially provided between the two abutment portions (12).

6. The lithium battery pole piece smoothing and pressing mechanism according to claim 4 or 5, characterized in that: The mounting seat (10) is connected to the connecting portion (11) via fixing bolts, and the number of the fixing bolts is greater than or equal to two.

7. The lithium battery pole piece smoothing and pressing mechanism according to claim 1, characterized in that: The mounting portion (3) is provided with a locking bolt, and the mounting portion (3) is provided with a locking screw hole (5) penetrating the side wall of the shaft hole (4), the locking bolt is threadedly connected to the locking screw hole (5), and the locking bolt abuts against the rotating shaft (2).

8. The lithium battery pole piece smoothing and pressing mechanism according to claim 1, characterized in that: The connecting portion (11) is provided with a second notch through groove (7), the second notch through groove (7) penetrates the connecting portion (11) along the first direction, the notch of the second notch through groove (7) is provided on one side of the connecting portion (11) along a third direction, the third direction is perpendicular to the first direction, and the mounting portion (3) is accommodated in the second notch through groove (7).

9. The lithium battery pole piece smoothing and pressing mechanism according to claim 1, characterized in that: It also comprises a bearing, wherein the inner ring of the bearing is sleeved on the rotating shaft (2), and the smoothing roller (1) is sleeved on the outer ring of the bearing.

10. The lithium battery pole piece smoothing and pressing mechanism according to claim 1, characterized in that: Along the axial direction of the rotating shaft (2), the width of two sides of the connecting portion (11) is greater than the width of the middle portion of the connecting portion (11).

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