Gear mechanism and lithium battery lamination machine

Abstract

The utility model provides a kind of transmission mechanism and lithium battery lamination machine, transmission mechanism includes: speed reducer, driven shaft and shaft coupling, shaft coupling includes the first connecting part and the second connecting part being connected, the output end of speed reducer is connected with the first connecting part of shaft coupling by convex shaft and recess cooperation, the second connecting part of shaft coupling is connected with the input end of driven shaft by convex shaft and recess cooperation.In the same wearing time, the wearing of speed reducer and driven shaft is reduced in the embodiment of the application, the wearing speed of speed reducer and driven shaft is reduced, so as to reduce the replacement frequency, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to a transmission mechanism and a lithium battery stacking machine. Background Technology

[0002] During the stacking process of lithium batteries, the electrodes need to be transported between various stations for further processing, such as transporting them to a designated inspection area for testing and judgment. Traditional stacking machines use a reducer to drive a conveyor belt to transfer the electrodes.

[0003] In related technologies, the driven shaft is equipped with a boss, and the reducer is equipped with a keyway. The driven shaft and the reducer are connected by the cooperation of the boss and the keyway. During the process of the reducer driving the driven shaft, the connection between the reducer and the driven shaft will continuously wear, resulting in a widening gap at the connection. As the gap widens, the wear rate at the connection also increases. This leads to rapid wear of certain parts of the reducer structure, frequent replacement of these parts, and high maintenance costs. Utility Model Content

[0004] The embodiments of this utility model provide a transmission mechanism and a lithium battery stacking machine, which can reduce the technical problems of rapid wear, high replacement frequency, and high maintenance cost of the reducer part of the lithium battery stacking machine.

[0005] In a first aspect, embodiments of the present invention provide a transmission mechanism, including: a reducer, a driven shaft, and a coupling. The coupling includes a first connecting part and a second connecting part connected to each other. The output end of the reducer is connected to the first connecting part of the coupling through a convex shaft and a groove. The second connecting part of the coupling is connected to the input end of the driven shaft through a convex shaft and a groove.

[0006] Compared to related technologies where the reducer and driven shaft are directly connected, resulting in a single wear point between them and significant wear, this embodiment of the application presents two wear points: the connection between the output end of the reducer and the first connection of the coupling, and the connection between the second connection of the coupling and the input end of the driven shaft. Within the same wear time, this embodiment reduces wear on both the reducer and the driven shaft, lowering the wear rate and thus reducing replacement frequency and maintenance costs.

[0007] In some embodiments, the output end of the speed reducer includes a first cam shaft, and the first connecting portion is provided with a first groove adapted to the first cam shaft.

[0008] In these embodiments, the first convex shaft is mounted in the first groove, making the connection between the output end of the reducer and the first connecting part of the coupling more secure.

[0009] In some embodiments, the output end of the reducer further includes a first flange portion, which is located radially outside the first cam shaft and forms a second groove with the first cam shaft;

[0010] The first connecting portion includes a second flange portion, which is circumferentially disposed on the outer periphery of the first groove and is mounted on the second groove.

[0011] In these embodiments, the first cam shaft, the second flange portion, and the first flange portion are arranged radially outward from the reducer, thereby forming a tight connection between the reducer and the driven shaft, and the second flange portion can be limited by the first flange portion.

[0012] In some embodiments, the output end of the reducer includes a third cam shaft connected to the side of the first cam shaft near the first connecting portion. The diameter of the third cam shaft is smaller than the diameter of the first cam shaft, so that the third cam shaft and the first cam shaft form a first stepped surface.

[0013] The first connecting portion is provided with a third groove adapted to the third convex shaft. The third groove communicates with the first groove, and the third groove and the first groove form a second stepped surface. The second stepped surface is used to cooperate and connect with the first stepped surface.

[0014] In these embodiments, the output end of the reducer is more tightly connected to the first connecting part by using the second stepped surface to mate with the first stepped surface, resulting in a larger contact area.

[0015] In some embodiments, the second connecting portion is provided with a first groove, and the input end of the driven shaft includes a second convex shaft adapted to the first groove.

[0016] In these embodiments, the second cam is mounted in the first groove, thereby connecting the driven shaft and the coupling.

[0017] In some embodiments, the second connecting portion is further provided with a second groove, which is arranged around the outer periphery of the first groove. The input end of the driven shaft further includes a third flange, which is arranged around the radial outer side of the second convex shaft and is mounted on the second groove.

[0018] In these embodiments, the reducer is arranged radially outward in the following order: a second cam shaft, a groove sidewall of the second groove near the second cam shaft, a third flange, and a groove sidewall of the second groove near the third flange, thereby forming a tight connection between the coupling and the driven shaft, and the groove sidewall of the second groove can limit the third flange.

[0019] In some embodiments, the hardness of the output end of the reducer is greater than the hardness of the first connecting portion, and / or the hardness of the input end of the driven shaft is greater than the hardness of the second connecting portion.

[0020] In these embodiments, the output end of the reducer is more wear-resistant than the first connecting part, thus the first connecting part is less likely to wear the reducer when relative movement occurs between the output end of the reducer and the first connecting part. When maintenance is required, only the coupling needs to be replaced, which is low-cost and simple to operate. The input end of the driven shaft has a higher hardness than the second connecting part. The input end of the driven shaft is more wear-resistant than the second connecting part, thus the second connecting part is less likely to wear the driven shaft when relative movement occurs between the input end of the driven shaft and the second connecting part. When maintenance is required, only the coupling needs to be replaced, which is low-cost and simple to operate.

[0021] In some embodiments, the output end of the reducer is made of steel, and the first connecting part is made of stainless steel; and / or

[0022] The input end of the driven shaft is made of steel, and the second connecting part is made of stainless steel.

[0023] In these embodiments, the hardness of the steel is higher than that of stainless steel, thereby ensuring that the hardness of the output end of the reducer is greater than that of the first connecting part. This also ensures that the hardness of the input end of the driven shaft is greater than that of the second connecting part.

[0024] In some embodiments, the coupling includes a flexible coupling.

[0025] In these implementations, the flexible coupling is able to compensate for possible radial, axial, and angular misalignments.

[0026] Secondly, embodiments of this utility model provide a lithium battery stacking machine, including the aforementioned transmission mechanism. This lithium battery stacking machine offers stable transmission, low maintenance costs, and simple operation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional schematic diagram of the transmission mechanism provided in an embodiment of this utility model;

[0029] Figure 2 This is a front view of the transmission mechanism provided in an embodiment of this utility model;

[0030] Figure 3 yes Figure 2 Cross-sectional view along the AA direction;

[0031] Figure 4 yes Figure 2 Cross-sectional view along the BB direction;

[0032] Figure 5 This is a three-dimensional schematic diagram of the driven shaft provided in an embodiment of this utility model;

[0033] Figure 6 This is a three-dimensional schematic diagram of the speed reducer provided in an embodiment of this utility model;

[0034] Figure 7 This is a first-view perspective perspective of the coupling provided in an embodiment of the present invention.

[0035] Figure 8 This is a second-view perspective perspective of the coupling provided in an embodiment of this utility model. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0037] In related technologies, during the production and processing of lithium batteries, die-cut electrode sheets are typically picked up and transported to a stacking platform by a conveying mechanism for stacking, forming stacked batteries. During the stacking process, the electrode sheets need to be moved between various workstations for further processing, such as to a designated inspection area for testing and evaluation. A commonly used transmission method in related technologies is to use a speed reducer to drive a conveyor belt to transfer the electrode sheets.

[0038] In related technologies, the driven shaft is equipped with a boss, and the reducer is equipped with a keyway. The driven shaft and the reducer are connected by the cooperation of the boss and the keyway. During the process of the reducer driving the driven shaft, wear occurs continuously at the connection point between the reducer and the driven shaft, resulting in a widening gap at the connection. As the gap widens, the wear rate at the connection point also increases. This leads to rapid wear of certain parts of the reducer structure, frequent replacement of these parts, and high maintenance costs.

[0039] Based on this, this application provides a transmission mechanism that can be used in a lithium battery stacking machine. A lithium battery stacking machine with the above-described transmission mechanism has the advantages of stable transmission, low maintenance costs, and simple operation.

[0040] Please combine Figure 1 The transmission mechanism 1 in this application embodiment is applied to a lithium battery stacking machine. The transmission mechanism 1 includes a reducer 10, a driven shaft 30, and a coupling 50. The coupling 50 includes a first connecting part 51 and a second connecting part 53 connected to each other. The output end 11 of the reducer is connected to the first connecting part 51 of the coupling 50 through a convex shaft and a groove. The second connecting part 53 of the coupling 50 is connected to the input end of the driven shaft 30 through a convex shaft and a groove.

[0041] The reducer 10 drives the driven shaft 30 to move via a coupling 50. By using the coupling 50, the output end 11 of the reducer 10 is connected to the first connecting part 51 of the coupling 50 via a convex shaft and a groove, and the second connecting part 53 of the coupling 50 is connected to the input end of the driven shaft 30 via a convex shaft and a groove. Compared to related technologies where the reducer and driven shaft are directly connected, resulting in a single wear point and significant wear between them, this embodiment of the application provides two wear points: the connection between the output end 11 of the reducer and the first connecting part 51 of the coupling 50, and the connection between the second connecting part 53 of the coupling 50 and the input end of the driven shaft 30. Within the same wear time, this embodiment reduces wear on both the reducer and the driven shaft 30, lowering the wear rate and thus reducing replacement frequency and maintenance costs.

[0042] Please combine Figure 2 , Figure 3 and Figure 4 The output end 11 of the reducer includes a first convex shaft 111, and the first connecting part 51 is provided with a first groove 511 adapted to the first convex shaft 111.

[0043] The first convex shaft 111 is installed in the first groove 511, making the connection between the output end 11 of the reducer and the first connecting part 51 of the coupling 50 more secure.

[0044] In some other embodiments, the output end 11 of the reducer may be provided with a groove, and the first connecting part 51 may include a convex shaft adapted to the first convex shaft 111. That is, the convex shaft of the first connecting part 51 is installed in the groove of the output end 11 of the reducer.

[0045] Please combine Figure 6 and Figure 8 The output end 11 of the reducer also includes a first flange portion 112, which is located radially outside the first cam shaft 111 and forms a second groove 113 between it and the first cam shaft 111.

[0046] The first connecting portion 51 also includes a second flange portion 513, which is arranged around the outer periphery of the first groove 511 and is installed in the second groove 113.

[0047] Please combine Figure 4 and Figure 8 Along the radial direction outward from the reducer 10, there are sequentially a first cam 111, a second flange portion 513, and a first flange portion 112, thereby forming a tight connection between the reducer 10 and the driven shaft 30, and the first flange portion 112 can limit the second flange portion 513.

[0048] Please combine Figure 4 , Figure 6 as well as Figure 8 The output end 11 of the reducer includes a third cam 115, which is connected to the side of the first cam 111 near the first connecting portion 51. The diameter of the third cam 115 is smaller than the diameter of the first cam 111, so that the third cam and the first cam 111 form a first stepped surface 117. The first connecting portion 51 is provided with a third groove 515 adapted to the third cam 115. The third groove 515 communicates with the first groove 511, and the third groove 515 and the first groove 511 form a second stepped surface 517. The second stepped surface 517 is used to engage with the first stepped surface 117. By engaging with the first stepped surface 117, the output end 11 of the reducer and the first connecting portion 51 are more tightly connected, with a larger contact area.

[0049] Please combine Figure 4 In some examples, along the radial direction of the reducer's shaft, the end face of the first flange 112 facing the first connecting portion 51 is on the same plane as the first stepped surface 117.

[0050] Please combine Figure 7 The second connecting part 53 is provided with a first groove 54, such as Figure 5 As shown, the input end of the driven shaft 30 includes a second convex shaft 311 adapted to the first groove 54. Figure 4 As shown, the second convex shaft 311 is mounted on the first groove 54, thereby connecting the driven shaft 30 and the coupling 50.

[0051] In some other embodiments, the second connecting portion 53 may include a convex shaft, and the input end of the driven shaft 30 may include a groove adapted to the convex shaft. This connects the driven shaft 30 and the coupling 50.

[0052] Please combine Figure 7 The second connecting part 53 is also provided with a second groove 55, which is arranged around the outer periphery of the first groove 54. Please refer to... Figure 5 The input end 31 of the driven shaft also includes a third flange portion 313, which is arranged radially outside the second convex shaft 311. Please refer to... Figure 4 The third flange 313 is installed in the second groove 55.

[0053] Please combine Figure 4The reducer 10, radially outward, consists of a second cam 311, a groove sidewall of the second groove 55 near the second cam 311, a third flange 313, and a groove sidewall of the second groove 55 near the third flange 313, thereby forming a tight connection between the coupling 50 and the driven shaft 30, and the groove sidewall of the second groove 55 can limit the third flange 313.

[0054] Because the reducer and drive shaft are connected by a coupling, the connection method is simpler and more reliable. This eliminates the need for periodic replacement of reducer components; only the coupling needs to be replaced. Manual disassembly of the reducer is unnecessary, simplifying the operation process, reducing operational difficulty, and preventing malfunctions caused by human error. Simultaneously, it reduces maintenance frequency and costs.

[0055] In one embodiment, the hardness of the output end of the reducer 10 is greater than that of the first connecting part 51. The output end of the reducer 10 is more wear-resistant than the first connecting part 51, so that when the output end of the reducer 10 and the first connecting part 51 move relative to each other, the first connecting part 51 is less likely to wear down the reducer 10. When maintenance is required, only the coupling 50 needs to be replaced, which is low-cost and simple to operate.

[0056] In one embodiment, the hardness of the input end of the driven shaft 30 is greater than the hardness of the second connecting portion 53. The input end of the driven shaft 30 is more wear-resistant than the second connecting portion 53, thus the second connecting portion 53 is less likely to wear down the driven shaft 30 when relative movement occurs between the input end of the driven shaft 30 and the second connecting portion 53. When maintenance is required, only the coupling 50 needs to be replaced, which is low-cost and simple to operate.

[0057] In one embodiment, the hardness of the output end of the reducer 10 is greater than the hardness of the first connecting portion 51, and the hardness of the input end of the driven shaft 30 is greater than the hardness of the second connecting portion 53.

[0058] The output end of the reducer 10 is made of 45# steel, and the first connecting part 51 is made of 316 stainless steel. The hardness of 45# steel is higher than that of 316 stainless steel, thus ensuring that the hardness of the output end of the reducer 10 is greater than that of the first connecting part 51.

[0059] The input end of the driven shaft 30 is made of 45# steel, and the second connecting part 53 is made of 316 stainless steel. The hardness of 45# steel is higher than that of 316 stainless steel, thus ensuring that the hardness of the input end of the driven shaft 30 is greater than that of the second connecting part 53.

[0060] In this embodiment, the first cam shaft 111 of the reducer 10 and the second cam shaft 311 of the driven shaft 30 are connected in a shaft-to-shaft manner, and the output end of the reducer is connected to the transmission shaft through a coupling 50, ensuring the stability and accuracy of the transmission. This reduces the clearance caused by the direct keyway connection between the reducer 10 and the driven shaft 30, making the transmission more precise and ensuring its stability. The improved transmission stability enhances the accuracy of the lamination transfer point, reduces deviations, and increases production efficiency. Specifically, the deviation of the lamination transfer point is optimized from 2cm to 2mm, effectively solving the problem of excessive deviation in the lamination transfer point.

[0061] In some embodiments, the output end 11 of the reducer is connected to the first connecting part 51 of the coupling 50 by a convex shaft and a groove, and the second connecting part 53 of the coupling 50 is connected to the input end of the driven shaft 30 by a convex shaft and a groove. The replacement cycle of the coupling can be determined by production efficiency.

[0062] In some embodiments, the coupling may be a flexible coupling, which is able to compensate for possible radial, axial and angular misalignments.

[0063] According to a second aspect of this disclosure, a lithium battery stacking machine is provided, which includes the aforementioned transmission mechanism. This lithium battery stacking machine possesses all the beneficial effects of the aforementioned transmission mechanism, which will not be elaborated further herein.

[0064] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A transmission mechanism (1) characterized in that, include: The gearbox (10), driven shaft (30), and coupling (50) are provided. The coupling (50) includes a first connecting part (51) and a second connecting part (53) connected to each other. The output end (11) of the gearbox is connected to the first connecting part (51) of the coupling (50) through a convex shaft and a groove. The second connecting part (53) of the coupling (50) is connected to the input end of the driven shaft (30) through a convex shaft and a groove.

2. The transmission mechanism of claim 1, wherein The output end (11) of the reducer includes a first convex shaft (111), and the first connecting part (51) is provided with a first groove (511) adapted to the first convex shaft (111).

3. The transmission mechanism of claim 2, wherein The output end (11) of the reducer also includes a first flange (112), which is located radially outside the first convex shaft (111) and forms a second groove (113) with the first convex shaft (111). The first connecting portion (51) includes a second flange portion (513), which is circumferentially disposed on the outer periphery of the first groove (511) and is mounted on the second groove (113).

4. The transmission mechanism of claim 3, wherein The output end (11) of the reducer includes a third cam (115), which is connected to the side of the first cam (111) near the first connecting part (51). The diameter of the third cam (115) is smaller than the diameter of the first cam (111) so that the third cam and the first cam (111) form a first stepped surface (117). The first connecting part (51) is provided with a third groove (515) adapted to the third convex shaft (115). The third groove (515) communicates with the first groove (511), and the third groove (515) and the first groove (511) form a second stepped surface (517). The second stepped surface (517) is used to cooperate and connect with the first stepped surface (117).

5. The transmission mechanism of claim 1, wherein The second connecting part (53) is provided with a first groove (54), and the input end of the driven shaft (30) includes a second convex shaft (311) adapted to the first groove (54).

6. The transmission mechanism of claim 5, wherein The second connecting part (53) is also provided with a second groove (55), which is arranged around the outer periphery of the first groove (54). The input end (31) of the driven shaft also includes a third flange (313), which is arranged around the radial outer side of the second convex shaft (311) and is installed in the second groove (55).

7. The transmission mechanism according to any one of claims 1 to 6, characterized in that The hardness of the output end of the reducer (10) is greater than the hardness of the first connecting part (51), and / or the hardness of the input end of the driven shaft (30) is greater than the hardness of the second connecting part (53).

8. The transmission mechanism according to any one of claims 1 to 6, characterized in that The output end of the reducer (10) is made of 45# steel, and the first connecting part (51) is made of 316 stainless steel; and / or The material of the input end of the driven shaft (30) is 45 steel, and the material of the second connecting part (53) is 316 stainless steel.

9. The transmission mechanism according to any one of claims 1 to 6, characterized in that The coupling comprises a flexible coupling.

10. A lithium battery lamination press characterized by, A transmission mechanism comprising a transmission mechanism according to any one of claims 1-9.

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