Adaptive knife shaft clutch device and lithium battery pole piece slitting machine

Abstract

The application relates to a self-adaptive knife shaft clutch device and a lithium battery pole piece slitting machine, the self-adaptive knife shaft clutch device comprises a driving disc and a driven disc, at least two telescopic butt joints are arranged on the driving disc at intervals around a rotation center, the telescopic butt joint comprises a sliding rod, a compression spring and a universal ball head, the sliding rod is axially slidably arranged on the driving disc, the sliding rod has an extending end which can extend out of the end face of the driving disc away from the driving shaft of the slitting machine, the universal ball head is arranged at the end of the extending end, the universal ball head is in contact with the driven disc through a ball, the compression spring is connected between the sliding rod and the driving disc to keep the extending end in an extended state and enable the extending end to be retracted after being stressed, and at least two slot holes are formed in the driven disc corresponding to the at least two telescopic butt joints of the driving disc, the slot holes are used for inserting the extending end of the sliding rod. The application can improve the butt joint efficiency of the knife shaft and the driving shaft of the slitting machine, and can also reduce the rigid impact, noise and metal powder generation during butt joint.

Description

Technical Field

[0001] This application relates to the field of lithium battery electrode slitting machine technology, and in particular to an adaptive cutter shaft clutch device and a lithium battery electrode slitting machine. Background Technology

[0002] In the production process of lithium battery electrodes, after coating and rolling, the electrodes need to be slit to achieve the required width. The slitting machine is the main equipment in the slitting process, and the cutter holder is the core component of the slitting machine. Because the slitting machine requires quick changes in slitting processes, the cutter holder must be a component that can be quickly installed and removed from the slitting machine.

[0003] When docking the cutter holder with the slitting machine, the cutter shaft of the cutter holder needs to be concentrically docked with the drive shaft of the slitting machine. Currently, the industry commonly uses a spline shaft with a spline sleeve docking method. The problems with this docking method are: (1) Aim is required before docking, which limits the speed of manual operation. (2) The docking is a rigid contact, which will generate rigid impact and noise. Rigid impact will inevitably affect the accuracy of the cutter holder, and noise will cause noise pollution in the workshop and may even cause discomfort to the workshop workers. (3) Metal dust is generated due to sliding friction between metals during docking. If the metal dust splashes onto the electrode, it can easily puncture the electrode. If the electrode is punctured, it cannot be used to avoid serious consequences such as short circuit of the battery. Summary of the Invention

[0004] Based on this, this application provides an adaptive cutter shaft clutch device, which can improve the docking efficiency between the cutter shaft and the drive shaft of the slitting machine during cutter holder changes. Simultaneously, it reduces rigid impact, noise, and the generation of metal dust during docking. This application also provides a lithium battery electrode slitting machine that uses the aforementioned adaptive cutter shaft clutch device to dock the cutter shaft and drive shaft, improving docking efficiency. Furthermore, it reduces rigid impact, noise, and the generation of metal dust during docking, thus preventing the electrode from being punctured by metal dust.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] An adaptive cutter shaft clutch device includes a drive disk and a driven disk. The drive disk is used to coaxially connect to the end of a slitting machine drive shaft, and the driven disk is used to coaxially connect to the end of a cutter shaft. At least two telescopic coupling members are spaced apart around a rotation center on the drive disk. Each telescopic coupling member includes a slide rod, a compression spring, and a universal ball joint. The slide rod is slidably mounted on the drive disk along the axial direction and has an extended end that extends out of the end face of the drive disk away from the slitting machine drive shaft. The universal ball joint is disposed at the end of the extended end and contacts the driven disk through a ball bearing. The compression spring is connected between the slide rod and the drive disk to keep the extended end in an extended state and to retract after being subjected to force. At least two slots are provided on the driven disk corresponding to the at least two telescopic coupling members of the drive disk, and the slots are used for the extended end of the slide rod to be inserted.

[0007] Furthermore, the slot is a U-shaped through hole, which extends axially through both ends of the driven disk, and the upper opening of the U-shaped through hole is located on the peripheral side of the driven disk.

[0008] Furthermore, the diameter of the outer shell of the universal ball joint is equal to the diameter of the protruding end.

[0009] Furthermore, the telescopic docking component also includes a positioning hole, a front sliding bushing, and a rear sliding bushing. The slide rod also has a positioning end, which is connected to the extended end and has a convex ring at the connection. The positioning hole axially penetrates both ends of the drive disk. The front sliding bushing is installed on the end face of the drive disk away from the slitting machine drive shaft, and the rear sliding bushing is installed on the end face of the drive disk close to the slitting machine drive shaft. The center lines of the positioning hole, the front sliding bushing, and the rear sliding bushing coincide. The slide rod passes through the positioning hole, and the extended end slides through the front sliding bushing, while the positioning end slides through the rear sliding bushing. The compression spring is sleeved on the positioning end, and both ends of the compression spring abut against the convex ring and the rear sliding bushing, respectively.

[0010] Furthermore, it also includes a guide structure, which includes a guide hole and a guide post adapted to the guide hole. The guide hole is coaxially disposed on the drive disk and penetrates the end face of the drive disk away from the drive shaft of the slitting machine. The guide post is coaxially disposed on the driven disk and protrudes from the end face of the driven disk away from the cutter shaft.

[0011] Furthermore, the end of the guide post furthest from the driven disk is configured in a conical shape.

[0012] Furthermore, the driven disk and the guide post are separate and each is fixedly connected to the end of the cutter shaft.

[0013] Furthermore, it also includes a bushing with a flange, the bushing being fixedly fitted onto the end of the cutter shaft, the driven disc being fastened to the flange of the bushing by a plurality of first screws, and the guide post being fastened to the end of the cutter shaft by a second screw located at the center, and the guide post abutting against the bushing.

[0014] Furthermore, lubricating grease is applied to the slide bar and / or the slot.

[0015] A lithium battery electrode slitting machine includes a drive mechanism and a cutter holder. The cutter holder is provided with a cutter shaft, and the machine also includes an adaptive cutter shaft clutch device as described in any of the preceding claims. The drive shaft of the drive mechanism is connected to the shaft end of the cutter shaft through the adaptive cutter shaft clutch device.

[0016] The adaptive cutter shaft clutch device and lithium battery electrode slitting machine of this application, when changing the cutter holder of the slitting machine, first push the cutter holder onto the slitting machine, install the drive disc on the drive shaft of the slitting machine, and install the driven disc on the shaft end of the cutter shaft, then engage the drive shaft and the cutter shaft. During engagement, the driven disc gradually approaches the drive disc, and the driven disc first contacts the universal ball joint, so the slide rod is pushed, the compression spring stores energy and compresses, and at the same time the extended end of the slide rod retracts towards the drive disc. After the end of the cutter shaft reaches the designated position, the driven disc stops approaching the drive disc. Then the cutter shaft is rotated, and the ball of the universal ball joint rolls and rubs against the driven disc until the universal ball joint adaptively falls into the slot. At this time, the slide rod is free of external force, so the compressed spring releases energy, the extended end of the slide rod returns to its original position and inserts into the slot, thus completing the engagement of the drive shaft and the cutter shaft. After engagement, the slitting machine drive shaft drives the drive disc to rotate, and the rotation of the drive disc drives the driven disc to rotate through the slide rod, and the rotation of the driven disc drives the rotation of the cutter shaft.

[0017] Therefore, by rotating the cutter shaft, the slide bar can adaptively fall into the slot under the action of the compression spring, thus eliminating the need for aiming before docking and improving the docking efficiency. When the driven plate approaches the drive plate, it contacts the universal joint. Since the universal joint is mounted on the slide bar, and the slide bar is connected to the compression spring, the compression spring absorbs the rigid impact force, greatly reducing the rigid impact and solving the problem of rigid impact affecting the accuracy of the cutter head. It also reduces the noise generated during contact. The drive plate contacts the driven plate through the universal joint. The universal joint and the end face of the driven plate have rolling friction, which is very quiet and solves the problem of noise pollution in the workshop environment. The rolling friction between the ball and the end face of the driven plate produces virtually no metal dust. In addition, applying lubricating grease to the slide bar and slot before docking, the slide bar can quickly insert into the slot under the action of the compression spring without producing metal dust. Therefore, no metal dust will fall on the electrode, avoiding the problem of metal dust potentially puncturing the battery later. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional structural schematic diagram of the adaptive tool axis clutch device according to an embodiment of this application.

[0020] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the adaptive tool shaft clutch when it is not fully engaged.

[0021] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the adaptive tool shaft clutch when fully engaged.

[0022] Figure 4 for Figure 1 The diagram shows a three-dimensional structure of the drive disc in the adaptive tool shaft clutch device.

[0023] Figure 5 for Figure 1 The diagram shows a three-dimensional structure of the driven disc in the adaptive tool shaft clutch device.

[0024] Figure 6 This is a schematic diagram of the structure of a lithium battery electrode slitting machine according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Drive mechanism; 11. Drive shaft;

[0027] 20. Tool holder; 21. Tool shaft;

[0028] 30. Adaptive tool shaft clutch device; 31. Drive disc; 311. Connecting shaft; 312. Guide hole; 32. Driven disc; 321. Slot; 33. Telescopic docking piece; 331. Slide rod; 3311. Extended end; 3312. Positioning end; 3313. Convex ring; 332. Compression spring; 333. Universal ball joint; 3331. Ball bearing; 334. Positioning hole; 335. Front sliding bushing; 336. Rear sliding bushing; 34. Guide post; 35. Bushing; 36. First screw; 37. Second screw. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. This application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0031] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] This application provides an adaptive cutter shaft clutch device 30, which is suitable for connecting shafts to realize torque transmission, and is particularly suitable for connecting the drive shaft and cutter shaft 21 of a lithium battery electrode slitting machine.

[0035] refer to Figure 1 The adaptive cutter shaft clutch device 30 of this application includes a drive disk 31 and a driven disk 32. The drive disk 31 is used to coaxially connect the shaft end of the slitting machine drive shaft, and the driven disk 32 is used to coaxially connect the shaft end of the cutter shaft 21. At least two telescopic coupling members 33 are arranged at intervals around the rotation center on the drive disk 31. The telescopic coupling member 33 includes a slide rod 331, a compression spring 332, and a universal ball joint 333. The slide rod 331 is slidably mounted on the drive disk 31 along the axial direction. The slide rod 331 has the ability to extend out of the drive disk 31 away from the slitting machine drive shaft. The extended end 3311 of the end face of the moving shaft is provided with a universal ball joint 333 at the end of the extended end 3311. The universal ball joint 333 contacts the driven plate 32 through the ball bearing 3331. The compression spring 332 is connected between the slide rod 331 and the drive plate 31 to keep the extended end 3311 in the extended state and to retract after being subjected to force. The driven plate 32 is provided with at least two slots 321 corresponding to at least two telescopic docking parts 33 of the drive plate 31. The slots 321 are used for the extended end 3311 of the slide rod 331 to be inserted.

[0036] When changing the blade holder of the slitting machine, first push the blade holder onto the slitting machine, install the drive disc 31 on the drive shaft of the slitting machine, install the driven disc 32 on the shaft end of the blade shaft 21, and then engage the drive shaft with the blade shaft 21. Figure 2 As shown, during docking, the driven disk 32 gradually approaches the driving disk 31. The driven disk 32 first contacts the universal ball joint 333, thus the slide rod 331 is pushed, the compression spring 332 stores energy and compresses, and at the same time, the extended end 3311 of the slide rod 331 retracts towards the driving disk 31. After the end of the cutter shaft 21 reaches the designated position, the driven disk 32 stops approaching the driving disk 31. Figure 3 As shown, the cutter shaft 21 is then rotated, and the balls 3331 of the universal ball joint 333 roll and rub against the driven plate 32 until the universal ball joint 333 adaptively falls into the slot 321. At this time, the slide rod 331 is free of external force, so the compressed spring 332 releases its stored energy, and the extended end 3311 of the slide rod 331 returns to its original position and inserts into the slot 321, thus completing the engagement of the drive shaft and the cutter shaft 21. After engagement, the slitting machine drive shaft drives the drive plate 31 to rotate. When the drive plate 31 rotates, it drives the driven plate 32 to rotate through the slide rod 331. The rotation of the driven plate 32 drives the cutter shaft 21 to rotate.

[0037] Therefore, by rotating the cutter shaft 21, the slide bar 331 can adaptively fall into the slot 321 under the action of the compression spring 332, thus eliminating the need for aiming before docking and improving the joining efficiency. When the driven plate 32 approaches the drive plate 31, it contacts the universal joint 333. Since the universal joint 333 is mounted on the slide bar 331, and the slide bar 331 is connected to the compression spring 332, the rigid impact force is absorbed under the action of the compression spring 332, greatly reducing the rigid impact and solving the problem of rigid impact affecting the accuracy of the tool holder. It also reduces the noise generated during contact. The drive plate 31 contacts the driven plate 32 through the universal joint 333. The universal joint 333 and the end face of the driven plate 32 undergo rolling friction, resulting in very low noise and solving the problem of noise pollution in the workshop environment. The rolling friction between the ball bearing 3331 and the end face of the driven disk 32 will not generate metal dust. In addition, lubricating grease is applied to the slide rod 331 and the slot 321 before docking. The slide rod 331 is quickly inserted into the slot 321 under the action of the compression spring 332 without generating metal dust. Therefore, no metal dust will fall on the electrode, avoiding the problem that metal dust may puncture the battery later.

[0038] For specific settings, please refer to [link / reference]. Figure 5 The slot 321 is a U-shaped through hole, which axially extends through both ends of the driven disk 32, with the upper opening of the U-shaped through hole located on the peripheral side of the driven disk 32. When the driven disk 32 approaches the driving disk 31, their axes deviate. Setting the slot 321 as a U-shaped through hole provides radial tolerance for the insertion of the slide rod 331 into the slot 321. With one slide rod 331 inserted into one slot 321, radial adjustment of the driven disk 32 facilitates the insertion of all slide rods 331 into their respective slots 321. The thickness of the driven disk 32 does not need to be excessive; therefore, it is optimal for the slot 321 to extend through both ends of the driven disk 32. The diameter of the driven disk 32 does not need to be excessive, and since the slot 321 is close to the peripheral side of the driven disk 32, it is optimal to directly set the upper opening of the U-shaped through hole on the peripheral side.

[0039] Preferably, the diameter of the outer shell of the universal ball joint 333 is equal to the diameter of the protruding end 3311. In this way, after the universal ball joint 333 adaptively falls into the slot 321, the slide rod 331 can smoothly enter the slot 321.

[0040] For specific settings, please refer to [link / reference]. Figure 1 and Figure 4The telescopic docking component 33 also includes a positioning hole 334, a front sliding bushing 335, and a rear sliding bushing 336. The slide rod 331 also has a positioning end 3312, which is integrally connected to the protruding end 3311 and has a protruding ring 3313 at the connection. The positioning hole 334 passes through both ends of the drive disk 31 axially. The front sliding bushing 335 is installed on the end face of the drive disk 31 away from the slitting machine drive shaft, and the rear sliding bushing 336 is installed on the drive disk 31 near the slitting machine drive shaft. On the end face, the center lines of the positioning hole 334, the front sliding bushing 335, and the rear sliding bushing 336 coincide. The slide rod 331 passes through the positioning hole 334, and the extended end 3311 slides through the front sliding bushing 335, and the positioning end 3312 slides through the rear sliding bushing 336. The compression spring 332 is set in the positioning hole 334 and sleeved on the positioning end 3312. The two ends of the compression spring 332 abut against the convex ring 3313 and the rear sliding bushing 336, respectively.

[0041] The drive disk 31 may have an integrally formed connecting shaft 311 to facilitate connection with the drive shaft of the slitting machine.

[0042] To ensure that the axes of the driven disk 32 and the driving disk 31 are aligned as closely as possible when they are close together, a guide structure can be provided. (Reference) Figure 1 The guiding structure includes a guide hole 312 and a guide post 34 adapted to the guide hole 312. The guide hole 312 is coaxially disposed on the drive disk 31 and penetrates the end face of the drive disk 31 away from the drive shaft of the slitting machine. The guide post 34 is coaxially disposed on the driven disk 32 and protrudes from the end face of the driven disk 32 away from the cutter shaft 21. Thus, during docking, the cutter shaft 21 can be guided by inserting the guide post 34 into the guide hole 312.

[0043] Furthermore, the end of the guide post 34 furthest from the driven disk 32 is tapered. This tapered structure allows the guide post 34 to be quickly inserted into the guide hole 312.

[0044] Further, for ease of manufacturing and installation, the driven disc 32 and the guide post 34 are separately provided and each is fixedly connected to the end of the cutter shaft 21. (See reference) Figure 1 and Figure 5 Specifically, the driven disc 32 is fixed to the end of the cutter shaft 21 via a flanged bushing 35. The bushing 35 can be fixed to the end of the cutter shaft 21 by a key, pin, or other bushing fixing method. The driven disc 32 is locked to the flange of the bushing 35 by multiple first screws 36. The guide post 34 is locked to the end of the cutter shaft 21 by a second screw 37 located in the center, and the guide post 34 abuts against the bushing 35. The abutment of the guide post 34 against the bushing 35 can axially limit the movement of the bushing 35.

[0045] Preferably, lubricating grease is applied to the slide bar 331 and / or the slot 321. This reduces friction between the contact surfaces when the slide bar 331 slides, preventing blockage and the generation of metal dust.

[0046] refer to Figure 6 This application also provides a lithium battery electrode slitting machine, including a drive mechanism 10, a cutter holder 20 and the adaptive cutter shaft clutch device 30. The cutter holder 20 is provided with a cutter shaft 21, and the drive shaft 11 of the drive mechanism 10 is connected to the shaft end of the cutter shaft 21 through the adaptive cutter shaft clutch device 30.

[0047] The lithium battery electrode slitting machine of this application uses the adaptive cutter shaft clutch device 30 to connect the cutter shaft 21 and the drive shaft 11, which improves the connection efficiency, reduces rigid impact, noise and metal dust generation, and avoids the problem of the electrode being punctured by metal dust.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above merely illustrate several implementation methods of this application and should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An adaptive tool shaft clutch device, characterized in that, The device includes a drive plate and a driven plate. The drive plate is used to coaxially connect to the end of the drive shaft of the slitting machine, and the driven plate is used to coaxially connect to the end of the cutter shaft. At least two telescopic coupling members are spaced apart around the rotation center on the drive plate. Each telescopic coupling member includes a slide rod, a compression spring, and a universal ball joint. The slide rod is slidably mounted on the drive plate along the axial direction and has an extended end that can extend out of the end face of the drive plate away from the drive shaft of the slitting machine. The universal ball joint is located at the end of the extended end and contacts the driven plate through a ball bearing. The compression spring is connected between the slide rod and the drive plate to keep the extended end in an extended state and to retract after being subjected to force. At least two slots are provided on the driven plate corresponding to the at least two telescopic coupling members of the drive plate. The slots are used for the extended end of the slide rod to be inserted. The telescopic docking component further includes a positioning hole, a front sliding bushing, and a rear sliding bushing. The slide rod also has a positioning end, which is connected to the extended end and has a convex ring at the connection. The positioning hole axially penetrates both ends of the drive disk. The front sliding bushing is installed on the end face of the drive disk away from the slitting machine drive shaft, and the rear sliding bushing is installed on the end face of the drive disk close to the slitting machine drive shaft. The center lines of the positioning hole, the front sliding bushing, and the rear sliding bushing coincide. The slide rod passes through the positioning hole, and the extended end slides through the front sliding bushing, while the positioning end slides through the rear sliding bushing. The compression spring is sleeved on the positioning end, and both ends of the compression spring abut against the convex ring and the rear sliding bushing, respectively.

2. The adaptive tool axis clutch device according to claim 1, characterized in that, The slot is a U-shaped through hole, which extends axially through both ends of the driven disk, and the upper opening of the U-shaped through hole is located on the peripheral side of the driven disk.

3. The adaptive tool axis clutch device according to claim 2, characterized in that, The diameter of the outer shell of the universal ball joint is equal to the diameter of the protruding end.

4. The adaptive tool axis clutch device according to claim 1, characterized in that, It also includes a guide structure, which includes a guide hole and a guide post adapted to the guide hole. The guide hole is coaxially disposed on the drive disk and penetrates the end face of the drive disk away from the drive shaft of the slitting machine. The guide post is coaxially disposed on the driven disk and protrudes from the end face of the driven disk away from the cutter shaft.

5. The adaptive tool axis clutch device according to claim 4, characterized in that, The end of the guide post furthest from the driven disk is cone-shaped.

6. The adaptive tool axis clutch device according to claim 5, characterized in that, The driven disk and the guide post are separate and each is fixedly connected to the end of the cutter shaft.

7. The adaptive tool axis clutch device according to claim 6, characterized in that, It also includes a bushing with a flange, which is used to fix it on the end of the cutter shaft. The driven disc is locked to the flange of the bushing by a plurality of first screws. The guide post is locked to the end of the cutter shaft by a second screw located in the center, and the guide post abuts against the bushing.

8. The adaptive tool axis clutch device according to claim 1, characterized in that, Lubricating grease is applied to the slide bar and / or the slot.

9. A lithium battery electrode slitting machine, comprising a drive mechanism and a cutter holder, wherein the cutter holder is provided with a cutter shaft, characterized in that, It also includes an adaptive tool shaft clutch as described in any one of claims 1 to 8, wherein the drive shaft of the drive mechanism is connected to the shaft end of the tool shaft through the adaptive tool shaft clutch.

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