An electrode tab chasing device

Abstract

The utility model provides an electrode piece pursuit cutting device, include: pursuit cutting drive component, cutting knife subassembly and cutting drive component, pursuit cutting drive component includes slide frame and first drive piece, slide frame along first direction extension setting, cutting knife subassembly slide setting on slide frame, first drive piece is used for driving cutting knife subassembly reciprocating movement along slide frame, be provided with transmission cam bearing on cutting knife subassembly, cutting drive component includes drive block and second drive piece, drive block is connected with transmission cam bearing, second drive piece is used for driving transmission cam bearing along second direction movement through drive block, makes cutting knife subassembly cut the electrode piece, second direction and first direction are perpendicular. The utility model discloses an electrode piece pursuit cutting device can make the speed control in pursuit cutting process more stable, to improve cutting position accuracy.

Description

Technical Field

[0001] This utility model relates to the field of battery processing equipment technology, and more specifically, to an electrode cutting device. Background Technology

[0002] When winding a square lithium battery cell, the winding equipment usually separates the positive electrode, negative electrode and separator into separate unwound plates, and then gathers them onto the winding needle to form a cell. When a cell is almost finished winding, the electrode plates need to be cut off, and then the final winding is completed and the termination tape is applied.

[0003] To improve the efficiency of winding equipment, the electrode sheets are typically cut during the tape winding process, a process known in the lithium battery industry as "follow-cutting." Ensuring the cutting accuracy of the electrode sheets during tape winding is crucial. However, controlling the speed stability during follow-cutting is difficult in related technologies, affecting the accuracy of the cutting position and thus the quality of the electrode sheets. Utility Model Content

[0004] The present invention aims to provide an electrode tracking and cutting device, which can make the speed control during the tracking and cutting process more stable, thereby improving the cutting position accuracy.

[0005] To solve the above problems, this utility model provides an electrode tracking and cutting device, comprising:

[0006] A tracking and cutting drive assembly, the tracking and cutting drive assembly including a sliding frame and a first drive member, the sliding frame extending along a first direction;

[0007] A cutting blade assembly is slidably mounted on the sliding frame. The first driving member is used to drive the cutting blade assembly to reciprocate along the sliding frame. A transmission cam bearing is provided on the cutting blade assembly.

[0008] A cutting drive assembly includes a drive block and a second drive member. The drive block is connected to the transmission cam bearing, and the second drive member is used to drive the transmission cam bearing to move in a second direction through the drive block, so that the cutter assembly cuts the electrode sheet.

[0009] The second direction is perpendicular to the first direction.

[0010] Furthermore, the cutting drive assembly also includes a first mounting base, and the second drive member is mounted on the first mounting base. The first mounting base is provided with a guide rail extending along the second direction, and the second drive member is used to drive the drive block to reciprocate along the guide rail.

[0011] Furthermore, the cutting drive assembly also includes a sliding plate, which is fixedly connected to the drive block. The sliding plate is slidably disposed on the guide rail. The second drive member is connected to the sliding plate and drives the sliding plate to reciprocate along the guide rail. The sliding plate is provided with clearance holes.

[0012] Furthermore, the clearance hole is an elliptical hole or an oblong hole, and the clearance hole extends along the first direction.

[0013] Furthermore, the second driving component includes a drive servo motor, a clamping mounting block, and a drive cam bearing. One end of the drive cam bearing is mounted on the drive servo motor via the clamping mounting block. The drive servo motor is used to drive the drive cam bearing to rotate. The other end of the drive cam bearing passes through the clearance hole and abuts against the inner wall of the sliding plate. The drive cam bearing is used to drive the sliding plate to move relative to the guide rail.

[0014] Furthermore, the drive block has a groove arranged along the first direction, and the transmission cam bearing is disposed within the groove.

[0015] Furthermore, the cutting blade assembly includes a second mounting base, which is slidably disposed on the sliding frame. The second mounting base is provided with a movable blade, a fixed blade, and a movable blade mounting seat. The fixed blade is fixedly disposed on the second mounting base, and the movable blade is disposed on the movable blade mounting seat. The movable blade mounting seat is connected to the transmission cam bearing. When the transmission cam bearing moves along the second direction, the transmission cam bearing is used to drive the movable blade to move closer to or separate from the fixed blade.

[0016] Furthermore, the cutter assembly also includes a guide rod and a first return spring. A guide sleeve is fitted on the guide rod. The two ends of the movable blade mounting base are respectively fitted onto the guide rod through one of the guide sleeves. The first return spring is fitted on each guide rod. One end of the first return spring is connected to the second mounting base, and the other end of the first return spring is connected to its corresponding guide sleeve.

[0017] Furthermore, the cutter assembly also includes a reinforcing connecting frame, which includes a first reinforcing connecting frame and a second reinforcing connecting frame. The two ends of the first reinforcing connecting frame are respectively sleeved on a guide rod through a guide sleeve. The second reinforcing connecting frame passes through the first reinforcing connecting frame, and one end of the second reinforcing connecting frame is connected to the transmission cam bearing, and the other end of the second reinforcing connecting frame is connected to the movable blade mounting seat.

[0018] Furthermore, the tracking drive assembly also includes a connecting plate, which is connected to the second mounting base. The connecting plate is slidably disposed on the sliding frame, and the first drive member is connected to the connecting plate and drives the connecting plate to reciprocate along the sliding frame.

[0019] The electrode tracking and cutting device of this utility model, by setting the cutting blade assembly on the sliding frame, and the first driving member driving the cutting blade assembly to move along the sliding frame, allows the cutting blade assembly and the electrode to move at the same speed during the electrode's conveyor belt winding process. This allows the cutting blade assembly to cut the electrode while maintaining relative stillness with the electrode, which is beneficial for improving the cutting quality. The cutting blade assembly and the cutting driving assembly are connected by a transmission cam bearing and a driving block. The second driving member can drive the cutting blade assembly to move along the cutting direction through the driving block and the transmission cam bearing, so that the cutting blade assembly can cut the electrode. Compared with mounting the cutting driving assembly on the cutting blade assembly, separating the cutting driving assembly and the cutting blade assembly not only reduces the weight of the cutting blade assembly and makes the speed control more stable during the tracking and cutting process, which is beneficial for improving the accuracy of the cutting position, but also makes the structure of the cutting blade assembly more streamlined and facilitates the disassembly and replacement of the cutting blade. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the electrode cutting device provided in the embodiments of this utility model;

[0021] Figure 2 This is a front view of the electrode cutting device provided in the embodiments of this utility model;

[0022] Figure 3 This is a first side view of the electrode tracking and cutting device provided in this embodiment of the present utility model;

[0023] Figure 4 This is a second side view of the electrode tracking and cutting device provided in this embodiment of the present invention.

[0024] Figure 5 This is a three-dimensional structural diagram of the cutting drive component provided in the embodiments of this utility model;

[0025] Figure 6 This is a side view of the cutting drive assembly provided in an embodiment of the present utility model.

[0026] Figure 7 This is a front view of the cutting drive component provided in the embodiment of this utility model;

[0027] Figure 8 This is a cross-sectional view of the cutting drive assembly provided in an embodiment of the present utility model.

[0028] Figure 9 This is a three-dimensional structural diagram of the cutter assembly provided in the embodiments of this utility model;

[0029] Figure 10 This is a front view of the cutter assembly provided in an embodiment of the present utility model;

[0030] Figure 11 This is a rear view of the cutter assembly provided in an embodiment of the present utility model. Detailed Implementation

[0031] The technical solution of this utility model will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In addition, in the description of this utility model, "at least one" means one or more, and "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this specification, the term "as an alternative embodiment" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one alternative embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Combination Figures 1 to 11 As shown, this embodiment provides an electrode tracking and cutting device, including: a tracking and cutting drive assembly 10, a cutting blade assembly 20, and a cutting drive assembly 30, wherein:

[0034] The tracking drive assembly 10 includes a sliding frame 11 and a first drive member 12. The sliding frame 11 has a direction along the electrode travel direction (i.e., the first direction). Figure 3 A slide rail extending along the y-axis (in the context of the slide rail);

[0035] The cutter assembly 20 is slidably mounted on the sliding frame 11. The first driving member 12 is used to drive the cutter assembly 20 to reciprocate along the sliding frame 11. A transmission cam bearing 21 is provided on the cutter assembly 20.

[0036] The cutting drive assembly 30 includes a drive block 31 and a second drive member 32. The drive block 31 is connected to the transmission cam bearing 21, and the second drive member 32 is used to drive the transmission cam bearing 21 along the cutting direction (i.e., the second direction) via the drive block 31. Figure 3 The blade assembly 20 moves along the x-axis direction to cut the electrode sheet.

[0037] The electrode tracking and cutting device provided in this embodiment, by setting the cutting blade assembly on the sliding frame, and the first driving member driving the cutting blade assembly to move along the sliding frame, allows the cutting blade assembly and the electrode to move at the same speed during the electrode's conveyor belt winding process. This allows the electrode to be cut while the cutting blade assembly and the electrode remain relatively stationary, which is beneficial for improving the cutting quality. The cutting blade assembly and the cutting driving assembly are connected by a transmission cam bearing and a driving block. The second driving member can drive the cutting blade assembly to move along the cutting direction through the driving block and the transmission cam bearing, so that the cutting blade assembly can cut the electrode. Compared with mounting the cutting driving assembly on the cutting blade assembly, separating the cutting driving assembly and the cutting blade assembly not only reduces the weight of the cutting blade assembly and makes the speed control more stable during the tracking and cutting process, which is beneficial for improving the accuracy of the cutting position, but also makes the structure of the cutting blade assembly more streamlined and facilitates the disassembly and replacement of the cutting blade.

[0038] Based on the above embodiments, as an optional implementation, the follow-cutting drive assembly 10 further includes a connecting plate 13, which is connected to the cutter assembly 20. The connecting plate 13 is slidably mounted on the sliding frame 11. The first drive member 12 is connected to the connecting plate 13 and drives the connecting plate 13 to reciprocate along the slide rail of the sliding frame 11. Thus, when the first drive member 12 drives the connecting plate 13 to move, the connecting plate 13 can drive the cutter assembly 20 to reciprocate along the slide rail of the sliding frame 11, thereby achieving follow-cutting of the electrode sheet. By connecting the cutter assembly 20 and the sliding frame 11 through the connecting plate 13, the stability of the cutter assembly 20 moving along the sliding frame 11 can be improved.

[0039] Based on the above embodiments, as an optional implementation method, combined with Figures 5 to 8As shown, the cutting drive assembly 30 also includes a first mounting base 33, and a second drive member 32 is mounted on the first mounting base 33. The first mounting base 33 is provided with a guide rail 331 extending along the cutting direction. The second drive member 32 is used to drive the drive block 31 to reciprocate along the guide rail 331. Thus, when the drive block 31 moves along the guide rail 331, the drive block 31 can drive the transmission cam bearing 21 connected to it to move along the guide rail 331, so that the cutter assembly 20 cuts the electrode sheet.

[0040] Based on the above embodiments, as an optional implementation, the cutting drive assembly 30 further includes a sliding plate 34, which is fixedly connected to the drive block 31. The sliding plate 34 is slidably disposed on the guide rail 331. The second drive member 32 is connected to the sliding plate 34 and drives the sliding plate 34 to reciprocate along the guide rail 331. The sliding plate 34 is provided with a clearance hole 341. Specifically, the second driving component 32 includes a driving servo motor 321, a clamping mounting block 322, and a driving cam bearing 323. One end of the driving cam bearing 323 is mounted on the driving servo motor 321 via the clamping mounting block 322. The driving servo motor 321 is used to drive the driving cam bearing 323 to rotate. The other end of the driving cam bearing 323 passes through the clearance hole 341 and abuts against the inner wall of the sliding plate 34 (i.e., the inner wall of the groove formed by opening the clearance hole 341) to realize the connection between the second driving component 32 and the sliding plate 34. When the driving servo motor 321 drives the driving cam bearing 323 to rotate, the driving cam bearing 323 drives the sliding plate 34 to move relative to the guide rail 331, thereby driving the driving plate 31 to reciprocate along the guide rail 331, so as to realize the cutting blade assembly 20 to cut the electrode sheet. Therefore, by driving the cam bearing 323 and the clearance hole 341, the rotational motion of the drive servo motor 321 can be converted into the linear motion of the sliding plate 34 in the cutting direction, so as to drive the drive plate 31 to reciprocate along the cutting direction.

[0041] Based on the above embodiments, as an optional implementation, the clearance hole 341 is an elliptical hole or an oblong hole, and the clearance hole 341 extends along the belt-carrying direction of the electrode sheet. This allows the drive cam bearing 323 to both drive the sliding plate 34 to move relative to the guide rail 331 and provides the drive cam bearing 323 with a certain degree of freedom, allowing the drive cam bearing 323 to rotate within the clearance hole 341.

[0042] Based on the above embodiments, as an optional implementation, the drive cam bearing 323 is an eccentric cam.

[0043] Based on the above embodiments, as an optional implementation, the drive block 31 has a groove 311 arranged along the belt-carrying direction of the electrode sheet, and the transmission cam bearing 21 is disposed in the groove 311, and the transmission cam bearing 21 can move within the groove 311 along the belt-carrying direction of the electrode sheet. Therefore, when the chasing drive assembly 10 drives the cutter assembly 20 to move, the transmission cam bearing 21 can move synchronously along the belt-carrying direction of the electrode sheet, thereby cutting the electrode sheet during the movement, realizing the chasing cut of the electrode sheet by the cutter assembly 20 without stopping the electrode sheet transmission, shortening the winding time. As an optional implementation, the transmission cam bearing 21 is engaged within the groove 311.

[0044] Based on the above embodiments, as an optional implementation method, combined with Figures 9 to 11 As shown, the cutter assembly 20 includes a second mounting base 22, which is connected to the connecting plate 13 so that the second mounting base 22 is slidably connected to the sliding frame 11. The second mounting base 22 is provided with a movable blade 23, a fixed blade 24, and a movable blade mounting seat 25. The fixed blade 24 is fixedly mounted on the second mounting base 22, and the movable blade 23 is mounted on the movable blade mounting seat 25. The movable blade mounting seat 25 is connected to a transmission cam bearing 21. When the drive plate 31 moves along the guide rail 331, the drive plate 31 drives the transmission cam bearing 21 to move along the cutting direction. The transmission cam bearing 21 drives the movable blade 23 to move closer to or away from the fixed blade 24. Thus, a channel for electrode sheet transmission is formed between the movable blade 23 and the fixed blade 24, making the entire cutter assembly 20 compact and easy to modularly install. Furthermore, when the transmission cam bearing 21 drives the movable blade 23 closer to the fixed blade 24, the electrode sheet between the movable blade 23 and the fixed blade 24 can be cut.

[0045] Based on the above embodiments, as an optional implementation, the movable blade 23 has a clamping part and a cutting edge part. The clamping part is disposed opposite to the fixed blade 24, and the cutting edge part is disposed on one side of the clamping part, that is, the cutting edge part and the clamping part are in contact and perpendicular to each other. The clamping part is used to cooperate with the fixed blade 24 to clamp the electrode sheet before cutting. Then, as the movable blade 23 continues to move toward the fixed blade 24, the cutting edge part cuts the electrode sheet. Thus, by providing a clamping part and a cutting edge part on the movable blade 23, the position of the electrode sheet can be fixed before cutting the electrode sheet, avoiding displacement of the cutting position of the electrode sheet.

[0046] Based on the above embodiments, as an optional implementation, the cutter assembly 20 further includes a guide rod 26 and a first return spring 27. A guide sleeve is fitted onto the guide rod 26. The two ends of the movable blade mounting base 25 are respectively fitted onto a guide rod 26 via a guide sleeve. Each guide rod 26 is fitted with a first return spring 27. One end of the first return spring 27 abuts against the inner wall of the second mounting base 22, and the other end of the first return spring 27 is connected to its corresponding guide sleeve. Thus, by mounting the movable blade mounting base 25 onto a pair of guide rods 26 via a pair of guide sleeves, the stability of the movable blade 23's movement is improved.

[0047] Based on the above embodiments, as an optional implementation, the cutter assembly 20 further includes a reinforcing connecting frame 28. The reinforcing connecting frame 28 includes a first reinforcing connecting frame 281 and a second reinforcing connecting frame 282 connected together. Both ends of the first reinforcing connecting frame 281 are respectively fitted onto a guide rod 26 via guide sleeves. The second reinforcing connecting frame 282 passes through the first reinforcing connecting frame 281, with one end connected to a transmission cam bearing 21 and the other end connected to a movable blade mounting seat 25. Thus, by connecting the guide rod 26, the transmission cam bearing 21, and the movable blade mounting seat 25 through the reinforcing connecting frame 28, the stability of the movable blade 23 can be improved when the transmission cam bearing 21 drives the movable blade mounting seat 25 to move, which is beneficial for improving the cutting quality of the electrode sheet.

[0048] The following combination Figures 1 to 11 The working principle of the electrode tracking and cutting device in this embodiment is explained as follows:

[0049] During the electrode winding process, the first drive unit 12 drives the cutter assembly 20 to move along the slide rail of the sliding frame 11 via the connecting plate 13 until the moving speed of the cutter assembly 20 is the same as the speed of the electrode. When the electrode needs to be cut, the drive servo motor 321 drives the drive cam bearing 323 to rotate. The drive cam bearing 323 drives the sliding plate 34 to move relative to the guide slide rail 331, thereby driving the drive plate 31 to move along the guide slide rail 331. This causes the transmission cam bearing 21 connected to the drive plate 31 to move along the cutting direction. The transmission cam bearing 21 drives the movable blade 23 to move closer to the fixed blade 24 to cut the electrode. After cutting, the transmission cam bearing 21 drives the movable blade 23 away from the fixed blade 24, and all components reset for the next cutting.

[0050] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. An electrode tracking and cutting device, characterized in that, include: A tracking and cutting drive assembly, the tracking and cutting drive assembly including a sliding frame and a first drive member, the sliding frame extending along a first direction; A cutting blade assembly is slidably mounted on the sliding frame. The first driving member is used to drive the cutting blade assembly to reciprocate along the sliding frame. A transmission cam bearing is provided on the cutting blade assembly. A cutting drive assembly includes a drive block and a second drive member. The drive block is connected to the transmission cam bearing, and the second drive member is used to drive the transmission cam bearing to move in a second direction through the drive block, so that the cutter assembly cuts the electrode sheet. The second direction is perpendicular to the first direction.

2. The electrode tracking and cutting device according to claim 1, characterized in that, The cutting drive assembly further includes a first mounting base, and the second drive member is mounted on the first mounting base. The first mounting base is provided with a guide rail extending along the second direction, and the second drive member is used to drive the drive block to reciprocate along the guide rail.

3. The electrode tracking and cutting device according to claim 2, characterized in that, The cutting drive assembly further includes a sliding plate, which is fixedly connected to the drive block. The sliding plate is slidably disposed on the guide rail. The second drive member is connected to the sliding plate and drives the sliding plate to reciprocate along the guide rail. The sliding plate is provided with clearance holes.

4. The electrode tracking and cutting device according to claim 3, characterized in that, The clearance hole is an elliptical hole or an oblong hole, and the clearance hole extends along the first direction.

5. The electrode tracking and cutting device according to claim 3, characterized in that, The second driving component includes a drive servo motor, a clamping mounting block, and a drive cam bearing. One end of the drive cam bearing is mounted on the drive servo motor via the clamping mounting block. The drive servo motor is used to drive the drive cam bearing to rotate. The other end of the drive cam bearing passes through the clearance hole and abuts against the inner wall of the sliding plate. The drive cam bearing is used to drive the sliding plate to move relative to the guide rail.

6. The electrode tracking and cutting device according to claim 1, characterized in that, The drive block has a groove arranged along the first direction, and the transmission cam bearing is disposed in the groove.

7. The electrode tracking and cutting device according to claim 1, characterized in that, The cutting blade assembly includes a second mounting base, which is slidably disposed on the sliding frame. The second mounting base is provided with a movable blade, a fixed blade, and a movable blade mounting seat. The fixed blade is fixedly disposed on the second mounting base, and the movable blade is disposed on the movable blade mounting seat. The movable blade mounting seat is connected to the transmission cam bearing. When the transmission cam bearing moves along the second direction, the transmission cam bearing is used to drive the movable blade to move closer to or separate from the fixed blade.

8. The electrode tracking and cutting device according to claim 7, characterized in that, The cutting blade assembly further includes a guide rod and a first return spring. A guide sleeve is fitted on the guide rod. The two ends of the movable blade mounting base are respectively fitted onto the guide rod through one of the guide sleeves. The first return spring is fitted on each guide rod. One end of the first return spring is connected to the second mounting base, and the other end of the first return spring is connected to its corresponding guide sleeve.

9. The electrode tracking and cutting device according to claim 7, characterized in that, The cutting blade assembly also includes a reinforcing connecting frame, which includes a first reinforcing connecting frame and a second reinforcing connecting frame. The two ends of the first reinforcing connecting frame are respectively sleeved on a guide rod through a guide sleeve. The second reinforcing connecting frame passes through the first reinforcing connecting frame, and one end of the second reinforcing connecting frame is connected to the transmission cam bearing, and the other end of the second reinforcing connecting frame is connected to the movable blade mounting base.

10. The electrode tracking and cutting device according to claim 7, characterized in that, The tracking drive assembly further includes a connecting plate, which is connected to the second mounting base. The connecting plate is slidably disposed on the sliding frame. The first drive member is connected to the connecting plate and drives the connecting plate to reciprocate along the sliding frame.

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