A tensioning device for a lithium battery winding machine

Abstract

This utility model relates to the field of lithium battery processing technology, specifically to a tensioning device for a lithium battery winding machine. It includes a support and fixing plate, with a diameter-changing mechanism slidably connected to the outside of the support and fixing plate. A support mechanism is fixedly connected to the outside of the support and fixing plate. The diameter-changing mechanism includes a drive assembly for driving, with a rotating gear one fixedly connected to the outside of the drive assembly. A rotating gear two is rotatably connected to the outside of the support and fixing plate. The external teeth of the rotating gear one and the rotating gear two are meshed with each other. Multiple sliding grooves are provided inside the rotating gear two. This utility model can quickly respond to different winding diameter requirements, improving production flexibility. The multi-stage gear engagement and sliding structure ensure controllable diameter adjustment, adapting to the production of various lithium battery specifications, effectively reducing equipment replacement costs, and helping to improve the efficiency and quality of lithium battery winding production.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing technology, and in particular to a tensioning device for a lithium battery winding machine. Background Technology

[0002] The explosive growth of the new energy vehicle and energy storage markets is driving lithium battery production towards large-scale, high-efficiency, and flexible manufacturing. Different application scenarios have significantly different requirements for cell specifications. For example, electric vehicles require large-size cylindrical cells, while consumer electronics favor ultra-thin pouch cells. The same production line needs to frequently switch between different winding diameters. Industry data shows that adopting automated winding diameter adjustment technology can reduce production line changeover time from several hours to less than 10 minutes, significantly improving equipment utilization. Traditional tensioning devices that rely on manual or semi-automatic adjustments are no longer sufficient to meet the demands of today's high-paced production and multi-specification adaptation.

[0003] Early lithium battery winding machines mostly used fixed molds or manually adjustable mechanical structures, such as changing the winding radius by replacing support rollers of different sizes or manually tightening screws. These methods required stopping the machine to disassemble parts, and the changeover time could take several hours, making it difficult to adapt to small-batch, multi-batch production modes. Moreover, manual operation was prone to introducing errors, affecting the winding consistency. When adjusting the winding diameter, traditional devices could not simultaneously optimize the material tension, causing the electrode or separator to stretch, wrinkle, or loosen during the diameter change. For example, if the tension was not compensated in time when the diameter increased, it would cause the gap between winding layers to be too large; when the diameter decreased, excessive tension would cause material damage, seriously affecting the cell performance and yield.

[0004] Most traditional tensioning devices use fixed molds and rely on disassembling and assembling support components of different sizes to change the winding diameter. For example, when adjusting the radius of the support ring by rotating the screw, not only is the operation efficiency low, but the diameter adjustment is also prone to inaccurate due to operation errors, which affects the consistency and yield of the battery cells. Therefore, a tensioning device for lithium battery winding machines is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a tensioning device for a lithium battery winding machine, which solves the problem of inconvenience in disassembling and cleaning the mixing equipment.

[0006] To achieve the above objectives, this utility model provides a tensioning device for a lithium battery winding machine, including a support fixing plate. A diameter changing mechanism is slidably connected to the outside of the support fixing plate, and a support mechanism is fixedly connected to the outside of the support fixing plate. The diameter changing mechanism includes a drive assembly for driving. A rotating gear one is fixedly connected to the outside of the drive assembly, and a rotating gear two is rotatably connected to the outside of the support fixing plate. The external teeth of the rotating gear one and the rotating gear two are meshed with each other. Multiple sliding grooves are provided inside the rotating gear two. A connecting sliding column is slidably connected inside the rotating gear two. A sliding connecting column is fixedly connected to the bottom of the connecting sliding column. A support sliding plate is slidably connected to the outside of the sliding connecting column. A telescopic support ring is fixedly connected to the outside of the sliding connecting column, i.e., the end away from the connecting sliding column. The rotating gear two is rotatably connected to the outside of the support sliding plate.

[0007] The support mechanism includes a telescopic cylinder, and a connecting telescopic rod is fixedly connected to the drive end of the telescopic cylinder. A connecting fixing block is fixedly connected to the outer end of the connecting telescopic rod, i.e., the end away from the telescopic cylinder.

[0008] The telescopic support ring is externally slidably connected to the outside of the support fixing plate, and the sliding connecting column is externally slidably connected to the outside of the support fixing plate.

[0009] The rotating gear is externally rotatably connected to the outside of the support fixing plate, and the connecting sliding column is externally rotatably connected to the outside of the support fixing plate.

[0010] The drive assembly includes a rotary motor, the drive end of which is fixedly connected to a connecting rotary column, and the exterior of the rotary motor is fixedly connected to the interior of the supporting sliding plate.

[0011] The rotating motor is externally fixedly connected to the outside of the supporting sliding plate, the connecting rotating column is externally fixedly connected to the inside of the rotating gear, and the rotating gear is externally rotatably connected to the outside of the supporting sliding plate.

[0012] The connecting block is externally fixedly connected to a rotating connecting plate, and the rotating connecting plate has multiple sliding grooves inside.

[0013] The rotating connecting plate has a supporting connecting column slidably connected inside, a connecting rotating block rotatably connected outside the supporting connecting column, a connecting supporting column fixedly connected to the outer end of the connecting rotating block away from the supporting connecting column, the outer side of the connecting supporting column slidably connected to the outer side of the rotating connecting plate, and the outer side of the connecting rotating block rotatably connected to the outer side of the rotating connecting plate.

[0014] This utility model discloses a tensioning device for a lithium battery winding machine. A rotating motor drives a connecting rotating column to rotate, which in turn drives a rotating gear one to rotate, and then a rotating gear two to rotate synchronously. This causes the connecting sliding column to rotate, ultimately driving the sliding connecting column to slide along a supporting sliding plate. The supporting sliding plate provides stable support for its movement. The movement of the sliding connecting column also drives the sliding telescopic support ring to slide, achieving flexible adjustment of the winding diameter. This adjustment is convenient and efficient, allowing for rapid response to different winding diameter requirements, improving production flexibility. The mechanical transmission is stable, and the multi-stage gear combination and sliding structure ensure controllable diameter adjustment. It is highly versatile, adaptable to the production of various lithium battery specifications, effectively reducing equipment replacement costs and helping to improve the efficiency and quality of lithium battery winding production.

[0015] 2. In this utility model, the telescopic cylinder is activated, driving the connecting telescopic rod to extend and retract, which in turn causes the connecting fixed block to slide. The sliding of the connecting fixed block causes the rotating connecting plate to rotate, which is transmitted through the supporting connecting column, causing the connecting rotating block to rotate synchronously, realizing the sliding of the connecting supporting column, completing the disassembly and support operation of the fixed roller, improving disassembly efficiency. The structure is compact and the transmission is stable. The multi-stage linkage design ensures that the disassembly process is smooth and orderly, avoiding damage to the fixed roller and other components. It has wide applicability and can be flexibly adapted to fixed rollers of different specifications to meet diverse production needs. At the same time, it facilitates equipment maintenance and repair, effectively shortens downtime, and improves production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional schematic diagram of a tensioning device for a lithium battery winding machine proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of a support and fixing plate for a tensioning device used in a lithium battery winding machine, as proposed in this utility model.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 This is a schematic diagram of the support mechanism structure of a tensioning device for a lithium battery winding machine proposed in this utility model.

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0022] In the diagram: 1. Supporting fixed plate; 2. Diameter changing mechanism; 21. Drive assembly; 211. Rotating motor; 212. Connecting rotating column; 22. Rotating gear one; 23. Rotating gear two; 24. Connecting sliding column; 25. Sliding connecting column; 26. Telescopic support ring; 27. Supporting sliding plate; 3. Supporting mechanism; 31. Telescopic cylinder; 32. Connecting telescopic rod; 33. Connecting fixed block; 34. Rotating connecting plate; 35. Supporting connecting column; 36. Connecting rotating block; 37. Connecting support column. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] Please see Figure 1 , Figure 4 and Figure 5 This utility model provides a technical solution: a tensioning device for a lithium battery winding machine, including a support fixing plate 1, which serves as the basic structure of the entire tensioning device, providing an installation benchmark and stable support for the diameter changing mechanism 2 and the support mechanism 3, ensuring that each component maintains its relative position during operation. The diameter changing mechanism 2 is slidably connected to the outside of the support fixing plate 1, and the support mechanism 3 is fixedly connected to the outside of the support fixing plate 1. The diameter changing mechanism 2 includes a drive component 21 for driving, a rotating gear 22 is fixedly connected to the outside of the drive component 21, and a rotating gear 23 is rotatably connected to the outside of the support fixing plate 1. The external teeth of the rotating gear 22 and the external teeth of the rotating gear 23 are meshed with each other. When the rotating gear 22 rotates, it drives the rotating gear 23 to rotate in the opposite direction.

[0025] The rotating gear 23 has multiple sliding grooves inside. The rotating gear 23 is slidably connected to the connecting sliding column 24. The bottom of the connecting sliding column 24 is fixedly connected to the sliding connecting column 25, which converts the circular motion of the rotating gear 23 into linear motion, driving the telescopic support ring 26 to achieve radial sliding. The sliding connecting column 25 is slidably connected to the outside of the supporting sliding plate 27, which provides a sliding track and support for the sliding connecting column 25, ensuring its smooth movement and accurate direction, and improving the stability of the mechanism. The outside of the sliding connecting column 25, i.e. the end away from the connecting sliding column 24, is fixedly connected to the telescopic support ring 26, which directly contacts the winding material. The winding diameter is changed by radial extension and contraction to meet the winding requirements of different specifications of battery cells. The outside of the rotating gear 23 is rotatably connected to the outside of the supporting sliding plate 27. The outside of the telescopic support ring 26 is slidably connected to the outside of the supporting fixed plate 1. The outside of the sliding connecting column 25 is slidably connected to the outside of the supporting fixed plate 1.

[0026] The external rotating gear 22 is rotatably connected to the outside of the supporting fixed plate 1, and the external rotating sliding column 24 is rotatably connected to the outside of the supporting fixed plate 1. The drive assembly 21 includes a rotating motor 211, the drive end of which is fixedly connected to the connecting rotating column 212, providing a power source. The rotational motion of the rotating motor 211 is converted into the output of the connecting rotating column 212. The external rotating motor 211 is fixedly connected to the inside of the supporting sliding plate 27, and the external rotating column 212 is fixedly connected to the inside of the rotating gear 22. The external rotating gear 22 is rotatably connected to the outside of the supporting sliding plate 27.

[0027] like Figures 1 to 3 As shown, the support mechanism 3 includes a telescopic cylinder 31. A connecting telescopic rod 32 is fixedly connected to the drive end of the telescopic cylinder 31, providing linear driving force. The disassembly and support of the fixed roller are achieved through the telescopic movement of the cylinder. A connecting fixing block 33 is fixedly connected to the outer end of the connecting telescopic rod 32, i.e., the end away from the telescopic cylinder 31. A rotating connecting plate 34 is fixedly connected to the outer end of the connecting fixing block 33, converting the linear movement of the telescopic cylinder 31 into the rotational movement of the rotating connecting plate 34. Multiple sliding grooves are opened inside the rotating connecting plate 34, and a support connecting plate is slidably connected inside the rotating connecting plate 34. The column 35 is rotatably connected to the outside of the supporting connecting column 35, and the connecting rotating block 36 transmits the rotational force of the rotating connecting plate 34 and converts it into the linear motion of the connecting supporting column 37, so as to realize the disassembly and support action of the fixed roller. The connecting supporting column 37 is fixedly connected to the outside of the connecting rotating block 36, that is, the end away from the supporting connecting column 35, and directly contacts the fixed roller. The clamping and fixing or loosening and disassembling of the fixed roller is realized through linear motion. The outside of the connecting supporting column 37 is slidably connected to the outside of the rotating connecting plate 34, and the outside of the connecting rotating block 36 is rotatably connected to the outside of the rotating connecting plate 34.

[0028] Working principle: When it is necessary to change the diameter of the lithium battery winding, the operation of the rotating motor 211 drives the rotation of the connecting rotating column 212, which in turn drives the rotation of the rotating gear 22, which in turn drives the rotation of the rotating gear 23, which in turn drives the rotation of the connecting sliding column 24, which in turn drives the sliding connecting column 25 to slide. At the same time, the supporting sliding plate 27 provides support for the movement of the sliding connecting column 25, thereby achieving the effect of supporting the normal operation of the sliding connecting column 25, which in turn drives the sliding of the telescopic support ring 26, thereby achieving the effect of changing the winding diameter.

[0029] When it is necessary to disassemble the fixed roller, the telescopic cylinder 31 drives the telescopic rod 32 to extend and retract, thereby causing the connecting fixed block 33 to slide, which in turn causes the rotating connecting plate 34 to rotate, which in turn causes the supporting connecting column 35 to rotate, which in turn causes the connecting rotating block 36 to rotate, thereby achieving the sliding of the connecting supporting column 37, thus achieving the effect of supporting the fixed roller and disassembling it.

[0030] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A tensioning device for a lithium battery winding machine, comprising a support fixing plate, characterized in that: The external sliding connection of the support fixing plate is a diameter changing mechanism, and the external fixed connection of the support fixing plate is a support mechanism. The diameter-changing mechanism includes a drive assembly for driving. A rotating gear one is fixedly connected to the outside of the drive assembly, and a rotating gear two is rotatably connected to the outside of the support plate. The external teeth of the rotating gear one and the external teeth of the rotating gear two are meshed with each other. Multiple sliding grooves are opened inside the rotating gear two. A connecting sliding column is slidably connected inside the rotating gear two. A sliding connecting column is fixedly connected to the bottom of the connecting sliding column. A support sliding plate is slidably connected to the outside of the sliding connecting column. A telescopic support ring is fixedly connected to the outside of the sliding connecting column, i.e., the end away from the connecting sliding column. The outside of the rotating gear two is rotatably connected to the outside of the support sliding plate.

2. The tensioning device for a lithium battery winding machine according to claim 1, characterized in that: The support mechanism includes a telescopic cylinder, and a connecting telescopic rod is fixedly connected to the drive end of the telescopic cylinder. A connecting fixing block is fixedly connected to the outer end of the connecting telescopic rod, that is, the end away from the telescopic cylinder.

3. A tensioning device for a lithium battery winding machine according to claim 2, characterized in that: The telescopic support ring is externally slidably connected to the outside of the support fixing plate, and the sliding connecting column is externally slidably connected to the outside of the support fixing plate.

4. A tensioning device for a lithium battery winding machine according to claim 3, characterized in that: The external rotating gear is rotatably connected to the outside of the support fixing plate, and the external connecting sliding column is rotatably connected to the outside of the support fixing plate.

5. A tensioning device for a lithium battery winding machine according to claim 4, characterized in that: The drive assembly includes a rotary motor, the drive end of which is fixedly connected to a connecting rotary column, and the exterior of the rotary motor is fixedly connected to the interior of the supporting sliding plate.

6. A tensioning device for a lithium battery winding machine according to claim 5, characterized in that: The external of the rotating motor is fixedly connected to the outside of the supporting sliding plate, the external of the connecting rotating column is fixedly connected to the inside of the rotating gear, and the external of the rotating gear is rotatably connected to the outside of the supporting sliding plate.

7. A tensioning device for a lithium battery winding machine according to claim 2, characterized in that: The external fixed connection of the connecting block is a rotating connecting plate, and the internal part of the rotating connecting plate has multiple sliding grooves.

8. A tensioning device for a lithium battery winding machine according to claim 7, characterized in that: The rotating connecting plate is slidably connected to a supporting connecting column inside, and a connecting rotating block is rotatably connected to the outside of the supporting connecting column. The connecting rotating block is fixedly connected to a connecting supporting column at the outside of the connecting supporting column, the outside of the connecting supporting column is slidably connected to the outside of the rotating connecting plate, and the outside of the connecting rotating block is rotatably connected to the outside of the rotating connecting plate.

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