Roller passing device for preventing tab from being folded

Abstract

The roller passing device for preventing the tab from being turned over comprises a roller shaft and a guiding device, at least one end of the roller shaft is provided with a downward groove body used for the tab to pass through, and the guiding device is arranged corresponding to the groove body. And a channel area through which the tab passes in a suspended manner is formed between the end surface, facing the roller shaft, of the guide device and the groove body. The roll shaft and the guide plate cannot be directly collided, and deformation and folding caused by single stress due to single-direction swing formed by support of the surface of the roll shaft are avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrode tab anti-flipping, and in particular relates to a roller device for preventing electrode tab flipping. Background Technology

[0002] With the development of the new energy lithium battery industry, slitting machines, sheet-making machines, stacking machines, and thermal lamination machines have become increasingly mature. However, the tabs of the positive and negative electrode materials still deform and fold when passing through the rollers. To solve the tab folding problem, most companies in the industry currently use tab guiding devices to ensure that the tabs smoothly enter the roller area. These devices employ contour guiding and adjust the distance between the guide plate and the roller to ensure the tabs are conveyed within the narrow space between the roller and the guide, reducing the tab sway amplitude and thus minimizing deformation and folding. However, this guiding structure still results in a significant amount of deformation and folding. With existing guiding devices, if the tab sways slightly towards the roller when entering the roller area, it will collide with the roller, causing deformation and folding. When the electrode tab passes through the roller area, it can only swing in the narrow space outside the roller. This causes the electrode tab to swing in a single direction, and the roller surface becomes a support surface. The electrode tab will generate localized stress in a single direction, which will cause deformation and make the electrode tab still have a large probability of deformation and folding. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the present invention aims to provide a roller device for preventing the tab from flipping, which will not directly hit the roller shaft and guide plate, nor will it be deformed and flipped due to a single stress caused by the unidirectional swing formed by the support on the roller shaft surface.

[0004] To achieve the above objectives, this utility model provides a roller device for preventing tab flipping, including a roller shaft and a guide device. At least one end of the roller shaft is provided with a downward groove for the tab to pass through. The guide device is provided corresponding to the groove, so that a channel area for the tab to pass through is formed between the end face of the guide device facing the roller shaft and the groove.

[0005] The width of the groove is greater than the width of the tab.

[0006] The cross-section of the trough is U-shaped.

[0007] A guide surface is provided at the connection between the U-shaped trough and the surface of the roller.

[0008] The outer edge of the tab does not exceed the guide surface near the end of the roller.

[0009] The guiding device is an L-shaped guide plate.

[0010] The end face of the guide plate facing the trough matches the shape of the roller.

[0011] The roller shaft is equipped with connecting devices at both ends.

[0012] The connecting device includes a mounting shaft, which is connected to the roller shaft via a bearing.

[0013] Compared with the prior art, the implementation of this utility model achieves the following significant technical effects:

[0014] This invention avoids direct impact with the roller and guide plate, and also prevents deformation and overturning due to single-direction oscillation caused by the roller surface support. The following will further explain the concept and technical effects of this invention with reference to the accompanying drawings, so as to fully understand the purpose, features, and effects of this invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a roller device for preventing electrode tab flipping according to this utility model;

[0016] Figure 2 This is a schematic diagram of the trough of a roller device for preventing electrode tab flipping according to this utility model. Detailed Implementation

[0017] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0018] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0019] A roller-passing device to prevent electrode tab flipping, such as Figure 1 , Figure 2As shown, the device includes a roller 4 and a guide device 3. At least one end of the roller 4 has a downward-facing groove 2 for the electrode tab to pass through. The guide device 3 is positioned corresponding to the groove 2, creating a channel area between the end face of the guide device 3 facing the roller 4 and the groove 2, allowing the electrode tab 1 to pass through in a suspended manner. The electrode tab is centrally located within the confined space of the roller and guide device, with a small range of swaying space on both sides. This prevents the electrode tab from deforming or folding due to impact with the roller during small-amplitude swaying, and also prevents deformation or folding caused by unidirectional stress due to a single swaying direction. This further solves the problem of electrode tab deformation and folding.

[0020] The width of the groove 2 is greater than the width of the electrode tab. This ensures that the electrode tab remains suspended when passing through the channel area, effectively solving the stress problem of the electrode tab.

[0021] The cross-section of the trough is U-shaped.

[0022] A guide surface is provided at the connection between the U-shaped trough 2 and the surface of the roller 4. This alleviates the hard contact between the electrode tab and the trough, so that the electrode tab is not subjected to radial force from the roller when the electrode is running at high speed, effectively preventing bending and deformation problems.

[0023] The outer edge of the tab does not exceed the guide surface near the end of the roller 4.

[0024] The guiding device 3 is an L-shaped guide plate. The end face of the guide plate facing the trough 2 matches the shape of the roller 4.

[0025] The roller 4 is equipped with connecting devices at both ends.

[0026] The connecting device includes a mounting shaft, which is connected to the roller shaft 4 via a bearing.

[0027] Compared with the prior art, the implementation of this utility model achieves the following significant technical effects:

[0028] The channel area of ​​this invention keeps the electrode tab in a suspended state at all times. This suspension effectively solves the stress problem of the electrode tab, preventing it from being subjected to radial force from the roller shaft when the electrode sheet rotates at high speed, thus effectively preventing bending and deformation. Simultaneously, the electrode tab is centered in the channel area between the roller shaft and the guide device, with a small range of swing space on both sides. This prevents the electrode tab from colliding with the roller shaft due to small-amplitude swings, thus avoiding deformation and folding. Furthermore, the electrode tab is not subjected to unidirectional stress due to a single swing direction, which could also cause deformation and folding. This further solves the problem of electrode tab deformation and folding.

[0029] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0030] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A roll-over device for preventing tab folding, characterized by, The device comprises a roller shaft with a downward groove at one end for the passage of the tab, and a guide device corresponding to the groove, so that the guide device forms a passage area for the tab to pass through between the end surface of the roller shaft and the groove.

2. The anti-tab folding roll passing device according to claim 1, wherein The width of the groove is greater than the width of the tab.

3. The anti-tab folding roll passing device according to claim 2, wherein The cross section of the groove is U-shaped.

4. The anti-tab folding roll passing device according to claim 3, wherein The connection between the U-shaped groove and the surface of the roller shaft is provided with a guide surface.

5. The anti-tab folding roll passing device according to claim 4, wherein The outer edge of the tab does not exceed the guide surface near the end of the roller shaft.

6. The anti-tab folding roll passing device according to claim 1, wherein The guide device is an L-shaped guide plate.

7. The anti-tab flip over roll device of claim 6, wherein, The end surface of the guide plate towards the groove matches the shape of the roller shaft.

8. The anti-tab folding roll passing device according to claim 1, wherein Both ends of the roller shaft are provided with a connecting device.

9. The anti-tab roll over device of claim 8, wherein, The connecting device comprises a mounting shaft connected to the roller shaft through a bearing.

Images