Abutting roller and abutting roller set

Abstract

The utility model relates to an abutting roller and an abutting roller group, the abutting roller comprises a roller shaft and a roller body, the side wall of the roller body at least comprises a first elastic material layer with elastic deformation capability, and the first elastic material layer abuts against a pole piece; at least one groove is formed in the roller body in the circumferential direction of the side wall of the roller body, so that the roller body is provided with an abutting part used for abutting against a pole piece coating area and a groove part used for giving way to a pole piece blank area; the blank area is avoided through the groove, the situation that cracks are caused due to the fact that wrinkles of the blank area are pressed under the action of the abutting roller can be effectively improved, the probability of belt breakage is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing, specifically, it relates to an abutment roller and an abutment roller assembly. Background Technology

[0002] When manufacturing electrodes, a well-mixed slurry is typically applied to foil, and the coated foil is then placed in an oven for drying. A coated electrode usually consists of a coated area with the slurry and an uncoated blank area. When double-sided coating is required, the worker transports the single-sided coated electrode to the feeding end of the coating mechanism for a second coating.

[0003] In the prior art, in order to ensure the coating quality of the electrode sheet, a certain tension needs to be provided to the material layer to improve the stability of the material layer transmission. Rubber rollers are installed before coating and after drying of the electrode sheet. When the main roller conveys the single-sided coated electrode sheet, the rubber roller is brought into contact with the main roller to limit and tension the roll material passing through the main roller, which can effectively improve the stability of the electrode sheet transmission process.

[0004] However, during use, it was found that under tension, while the electrode sheet was being tightened, some wrinkles were generated in the thinner blank area. When the wrinkles passed through the bonding rubber roller and the main roller, creases were generated, resulting in weak areas that were easy to tear. In subsequent processes, this could easily lead to issues such as tape breakage, causing a large amount of foil material to be wasted and affecting the product yield. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an abutting roller and an abutting roller assembly.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] Firstly, this application proposes an abutment roller.

[0008] An abutment roller includes a roller shaft and a roller body. The sidewall of the roller body includes at least one layer of first elastic material with elastic deformation capability, and the first elastic material layer abuts against the electrode. The roller body has at least one groove formed along the circumferential direction of the sidewall of the roller body, so that the roller body forms an abutment portion for abutting against the electrode coating area and a groove portion for avoiding the blank area of ​​the electrode.

[0009] Preferably, the groove portion is provided with a second elastic material layer, the sidewall of the second elastic material layer abuts against the sidewall of the groove, and the Young's modulus of the second elastic material layer is less than that of the first elastic material layer; and when the outer sidewall of the second elastic material layer is flush with the sidewall of the first elastic material layer under the deformation state of the first elastic material layer, the restoring force of the second elastic material layer is less than that of the first elastic material layer.

[0010] Preferably, the roller body further includes a support member, which is interference-fitted with the roller shaft and / or the first elastic material layer, or the support member is integrally formed with the roller shaft and / or the first elastic material layer.

[0011] Preferably, the groove opening is provided through the side wall of the roller body; and the bottom wall of the groove is a first elastic material layer, a support member, or a roller shaft.

[0012] Preferably, the support member is interference-fitted with the first elastic material layer located at the abutment portion, and the side wall of the support member located at the groove portion is set lower than the side wall of the support member located at the abutment portion. When the first elastic material layer is subjected to external force, the first elastic material layer located at the groove portion deforms toward the roller shaft to form a groove.

[0013] Preferably, the support member is interference-fitted with the first elastic material layer located at the abutment portion, the bottom wall of the groove is a support member or a roller, a limiting plate is provided on the side wall of the support member facing the first elastic material layer, the limiting plate abuts against the side wall of the first elastic material layer, the limiting plate is arranged circumferentially along the roller body, and the limiting plate is set lower than the side wall of the first elastic material layer when the first elastic material layer is in the state of maximum deformation.

[0014] Preferably, the support member is interference-fitted with the roller shaft, and multiple support members are provided.

[0015] Preferably, a limiting ring is also fitted on the roller shaft. The limiting ring is located near the end of the roller shaft of the support member. A blocking plate is provided at the end of the limiting ring facing the support member to block the support member. The limiting ring is also provided with a locking screw to determine the relative position of the limiting ring and the roller shaft.

[0016] Secondly, this application proposes an abutment roller assembly.

[0017] An abutting roller assembly includes a main roller and an abutting roller, wherein the abutting portion of the abutting roller and the main roller work together to press the electrode sheet together.

[0018] Preferably, the abutting roller is slidably arranged, and during the sliding process, the abutting roller abuts or separates from the main roller.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0020] By setting a first elastic material layer on the abutment roller body, when a single-sided coated electrode sheet is coated a second time on the reverse side, the first elastic material layer abuts against the electrode sheet and applies force to it. During this process, due to the presence of grooves on the surface of the first elastic material layer, a certain avoidance area is reserved for the blank area of ​​the electrode sheet. The force of the first elastic material layer on the blank area of ​​the electrode sheet is weakened, which effectively reduces the occurrence of excessive stretching of the thin blank area under tension. At the same time, it effectively reduces the probability of creases when the wrinkled blank area passes through the avoidance area, thereby effectively reducing the probability of strip breakage. In addition, since the additional tensile force is removed, the situation of folded edges and wrinkles is effectively improved, while reducing the difficulty of subsequent operations and improving product quality.

[0021] Furthermore, by setting a second elastic material layer, or by reserving a space for the first elastic material layer to move in the groove, a groove is formed on the surface of the first elastic material layer. At this time, the function of the first or second elastic material layer is to flatten the blank area of ​​the electrode, further reducing the generation of wrinkles and creases in the blank area and ensuring the quality of the electrode. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an abutment roller according to Embodiment 1 of this application;

[0023] Figure 2 This is a schematic diagram of Embodiment 2 of this application, used to highlight the support member;

[0024] Figure 3 This is a schematic diagram of the first elastic material layer being configured as multiple segments as described in Embodiment 2 of this application;

[0025] Figure 4 This is a schematic diagram of an abutting roller abutting state in Embodiment 3 of this application;

[0026] Figure 5 This is a cross-sectional view of an abutting roller in an abutting state according to Embodiment 3 of this application;

[0027] Figure 6 This is a cross-sectional view of an abutment roller according to Embodiment 4 of this application;

[0028] Figure 7 This is a schematic diagram of an abutting roller assembly in Embodiment 5 of this application.

[0029] In the figure: 1. Roller shaft; 2. Roller body; 21. Support member; 211. First support member; 212. Second support member; 213. Limiting plate; 22. First elastic material layer; 23. Second elastic material layer; 24. Groove; 25. Groove portion; 26. Abutting portion; 3. Limiting ring; 4. Blocking plate; 5. Locking screw; 6. Main roller; 7. Sliding track; 8. Abutting roller; 9. Electrode; 91. Blank area; 92. Coating area. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] A type of abutment roller, as shown in the figure Figure 1 The roller body 2 includes a roller shaft 1 and a roller body 2 fixedly mounted on the roller shaft 1. The roller body 2 includes a support member 21 that is interference-fitted with the roller shaft 1 and a first elastic material layer 22 disposed on the side of the support member 21 away from the roller shaft 1. In this embodiment, the first elastic material layer 22 is a silicone rubber layer. The support member 21 is a steel pipe, through which the roller shaft 1 passes and is interference-fitted with the inner ring of the steel pipe. A limiting ring 3 is also fitted on the roller shaft 1. A blocking plate 4 is provided at one end of the limiting ring 3. A locking screw 5 is also provided on the limiting ring 3. The locking screw 5 can abut against the roller shaft 1 to determine the position of the limiting ring 3 and the blocking plate 4 relative to the roller shaft 1, thereby limiting the support member 21 through the blocking plate 4. In other embodiments, the roller body 2 can also be configured as an integrally mounted rubber roller, or the support member 21 can be integrally mounted with the roller shaft 1.

[0036] Reference Figure 1A groove 24 is formed on the side wall of the first elastic material layer 22 away from the support member 21. The groove 24 is formed circumferentially along the abutment roller, and the position of the groove 24 can be set according to the actual position of the blank area 91 of the electrode 9. In this embodiment, the groove 24 is symmetrically arranged at both ends of the first elastic material layer 22, forming two pairs of groove portions 25 that avoid the blank areas 91, and abutment portions 26 arranged at both ends of the groove portions 25. When conveying the single-sided coated electrode 9, the groove 24 has a certain avoidance effect on the electrode 9, reducing the stretching of the electrode 9 under the action of the first elastic material layer 22, thereby reducing the generation of wrinkles and frayed edges, and further reducing the probability of creases caused by compression, thus improving the quality of the electrode 9. In addition, even if a small number of wrinkles are generated, since the groove portion 25 has an avoidance effect on the blank area 91, creases are not easily generated, thereby reducing the risk of tape breakage.

[0037] In other embodiments, multiple segments of the first elastic material layer 22 can be spaced apart, with a gap between adjacent segments. In this case, the bottom wall of adjacent segments of the first elastic material layer 22 and the side wall of the support member 21 also form a groove 24. Furthermore, to improve the stability of the first elastic material layer 22 during use, a limiting plate 213 can be provided on the side wall of the support member 21 to limit the first elastic material layer 22. By ensuring that the height of the limiting plate 213 is lower than the height of the first elastic material layer 22 under maximum deformation, the normal use of the abutment roller is guaranteed. In addition, depending on the actual use, the thickness of the support member 21 in the groove portion 25 can be further reduced.

[0038] Example 2

[0039] An abutment roller, differing from Embodiment 1 in that, referring to Figure 2 The support member 21 is configured as multiple metal rings, and the first elastic material layer 22 is interference-fitted with the support member 21. In this embodiment, there are 7 support members 21 arranged side by side, with the bottom walls of two adjacent support members 21 abutting against each other. The limiting ring 3 is located on both sides of the end support member 21, and after being locked by the locking screw 5, the blocking plate 4 abuts against the side wall of the support member 21, so that the multiple support members 21 abut against each other. In other embodiments, the side wall of the support member 21 may also be provided with mutually cooperating protrusions and limiting grooves to limit the relative position of two adjacent support members 21.

[0040] In other embodiments, refer to Figure 3When the first elastic material layer 22 is configured as multiple segments, the support member 21 can be configured as a first support member 211 with a smooth sidewall and a second support member 212 extending circumferentially along one of its bottom walls to form a limiting plate 213. During the installation of the support member 21, the smooth first support member 211 is placed on the abutment portion 26, and the second support member 212 with the limiting plate 213 is placed on the end of the abutment portion 26 near the groove portion 25, and the limiting plate 213 is placed towards the groove portion 25. When the groove portion 25 is not provided with the support member 21, the bottom wall of the limiting plate 213, the second support member 212 and the side wall of the roller 1 together form the side wall of the groove 24. Alternatively, depending on the actual situation, both bottom walls of the second support member 212 can be extended with limiting plates 213, and the second support member 212 can be placed in the groove 25. The limiting plates 213 on both sides limit the first elastic material layer 22 on the outside of the first support member 211. At this time, the side wall of the second support member 212, the limiting plates 213, and the bottom wall of the first elastic material layer 22 together form the inner wall of the groove 24.

[0041] In this embodiment, for ease of processing, use, and replacement, the support members 21 can also be set to the same specifications. In other embodiments, to improve the adjustability of the rubber roller, multiple support members 21 can be set to different specifications. When different length specifications are required, the operator can remove the support member 21 of the corresponding specification and cover it with the first elastic material layer 22 of the corresponding specification. The first elastic material layer 22 can also be set one-to-one with the support member 21.

[0042] Example 3

[0043] An abutment roller, differing from Embodiment 2 in that, referring to Figure 4 and Figure 5 The first elastic material layer 22 is arranged in a uniformly thick sleeve shape, completely covering the abutment portion 26 and the groove portion 25. The groove portion 25 does not have a support member 21, allowing the first elastic material layer 22 located in the groove portion 25 a certain amount of movement allowance towards the support member 21 when subjected to external force. When the abutment portion 26 cooperates with the main roller 6 to press the electrode 9 together, the first elastic material layer 22 in the groove portion 25 moves towards the support member 21, forming an arc-shaped groove 24 on the surface of the first elastic material layer 22. This also reduces the stretching effect on the blank area 91. Simultaneously, due to the small deformation of the first elastic material layer 22, it still has a certain limiting effect on the blank area 91, effectively improving the occurrence of warping in the blank area 91 and further ensuring the quality of the electrode 9. In other embodiments, depending on the actual use, the support member 21 provided in the groove portion 25 can also be set lower than the outer wall of the abutment portion 26.

[0044] In addition, this embodiment can also be modified based on the abutting roller described in embodiment 1. In this case, the side wall of the support member 21 located in the groove portion 25 is set lower than the side wall of the support member 21 located in the abutting portion 26, so that the first elastic material layer 22 deforms inward after being subjected to force, so that the side of the first elastic material layer 22 away from the support member 21 forms a micro-groove 24.

[0045] Example 4

[0046] An abutment roller, differing from Embodiment 1 or 2 in that, referring to Figure 6 The groove 24 formed is provided with a second elastic material layer 23, and the Young's modulus of the second elastic material layer 23 is less than that of the first elastic material layer 22. In this embodiment, the second elastic material layer 23 is a sponge layer. When both the first elastic material layer 22 and the second elastic material layer 23 are subjected to external force, a certain amount of deformation occurs. When the sidewalls of the first elastic material layer 22 and the second elastic material layer 23 are flush with each other on the side away from the roller shaft 1, the restoring force of the first elastic material layer 22 is greater than that of the second elastic material layer 23. This makes the force of the contact portion 26 acting on the electrode 9 greater than the force of the groove portion 25 acting on the electrode 9. Applying different magnitudes of force to the coating area 92 and the blank area 91 can effectively improve wrinkles, frills and creases while reducing the occurrence of warping in the edge blank area 91.

[0047] Example 5

[0048] A type of abutment roller assembly, as shown in the reference Figure 7 The system includes a main roller 6 and an abutting roller 8 as described in any of Examples 1-4. The two ends of the roller shaft 1 of the abutting roller 8 are slidably connected to the sliding track 7, and move closer to or away from the main roller 6 under the action of a cylinder. During the tape threading process, the operator can drive the abutting roller 8 away from the main roller 6 to form a gap between the main roller 6 and the abutting roller 8 for tape threading. Then, the abutting roller 8 is driven closer to the main roller 6. The abutting part 26 of the abutting roller 8 works together with the main roller 6 to press the coating area 92 of the electrode 9 firmly against it, and avoids the blank area 91 through the groove part 25. This reduces the occurrence of wrinkles, frilly edges and creases in the blank area 91 caused by uneven force on the electrode 9, improves the quality of the electrode 9, reduces the occurrence of tape breakage, reduces foil waste, and improves the yield.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An abutment roller, characterized in that, The roller body (2) includes a roller shaft (1) and a roller body (2). The sidewall of the roller body (2) includes at least one layer of first elastic material (22) with elastic deformation capability. The first elastic material layer (22) abuts against the electrode (9). The roller body (2) has at least one groove (24) formed along the circumferential direction of the sidewall of the roller body (2), so that the roller body (2) forms an abutting portion (26) for abutting against the coating area (92) of the electrode (9) and a groove portion (25) for avoiding the blank area (91) of the electrode (9).

2. The abutment roller according to claim 1, characterized in that, The groove (25) is provided with a second elastic material layer (23), the sidewall of the second elastic material layer (23) abuts against the sidewall of the groove (24), and the Young's modulus of the second elastic material layer (23) is less than that of the first elastic material layer (22); and when the outer sidewall of the second elastic material layer (23) is flush with the sidewall of the first elastic material layer (22) under the deformation state of the first elastic material layer (22), the restoring force of the second elastic material layer (23) is less than that of the first elastic material layer (22).

3. The abutting roller according to any one of claims 1 or 2, characterized in that, The roller body (2) further includes a support member (21), which is interference-fitted with the roller shaft (1) and / or the first elastic material layer (22), or the support member (21) is integrally formed with the roller shaft (1) and / or the first elastic material layer (22).

4. The abutting roller according to claim 3, characterized in that, The groove (24) opening is provided through the side wall of the roller body (2); and the bottom wall of the groove (24) is a first elastic material layer (22) or a support (21) or a roller shaft (1).

5. The abutment roller according to claim 4, characterized in that, The support member (21) is interference-fitted with the first elastic material layer (22) located in the abutment portion (26). The side wall of the support member (21) located in the groove portion (25) is lower than the side wall of the support member (21) located in the abutment portion (26). When the first elastic material layer (22) is subjected to external force, the first elastic material layer (22) located in the groove portion (25) deforms toward the roller shaft (1) to form a groove (24).

6. The abutment roller according to claim 4, characterized in that, The support member (21) is interference-fitted with the first elastic material layer (22) located at the abutment portion (26). The bottom wall of the groove (24) is the support member (21) or the roller (1). A limiting plate (213) is provided on the side wall of the support member (21) facing the first elastic material layer (22). The limiting plate (213) abuts against the side wall of the first elastic material layer (22). The limiting plate (213) is arranged circumferentially along the roller body (2). When the first elastic material layer (22) is in the state of maximum deformation, the limiting plate (213) is set lower than the side wall of the first elastic material layer (22).

7. The abutting roller according to claim 3, characterized in that, The support member (21) is interference-fitted with the roller (1), and multiple support members (21) are provided.

8. The abutment roller according to any one of claims 4-6, characterized in that, The support member (21) is interference-fitted with the roller (1), and multiple support members (21) are provided.

9. The abutment roller according to claim 7, characterized in that, A limiting ring (3) is also fitted on the roller shaft (1). The limiting ring (3) is located on the support member (21) near the end of the roller shaft (1). A blocking plate (4) is provided on one end of the limiting ring (3) facing the support member (21) to block the support member (21). A locking screw (5) is also provided on the limiting ring (3) to determine the relative position of the limiting ring (3) and the roller shaft (1).

10. The abutment roller according to claim 8, characterized in that, A limiting ring (3) is also fitted on the roller shaft (1). The limiting ring (3) is located on the support member (21) near the end of the roller shaft (1). A blocking plate (4) is provided on one end of the limiting ring (3) facing the support member (21) to block the support member (21). A locking screw (5) is also provided on the limiting ring (3) to determine the relative position of the limiting ring (3) and the roller shaft (1).

11. An abutment roller assembly, characterized in that, It includes a main roller (6) and an abutting roller (8) as described in any one of claims 1-10, wherein the abutting part (26) of the abutting roller (8) and the main roller (6) work together to press the electrode sheet (9) together.

12. The abutment roller assembly according to claim 11, characterized in that, The abutting roller (8) is slidably arranged, and during the sliding process, the abutting roller (8) abuts or separates from the main roller (6).

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