Electroplating flanging mechanism and electroplating equipment

Abstract

The utility model discloses an electroplating flanging mechanism and electroplating equipment, and the electroplating flanging mechanism comprises a conductive clamp which is used for clamping a film; the flanging assembly is arranged on the side of the conductive clamp, and the conductive clamp and the flanging assembly are sequentially arranged in the transmission direction of the thin film; the flanging assembly comprises two guide parts, and the two guide parts are oppositely arranged in the breadth direction of the thin film; the two guiding parts are provided with guiding end faces respectively, and the horizontal distance between the two guiding end faces is smaller than the breadth of the film, so that in the film conveying process, the edges of the two sides of the film make contact with the two guiding end faces respectively, the edges of the two sides of the film are turned over, and turned-over edges are formed. According to the utility model, the problems that the copper foil is easy to tear and break in the production process of the current collector in the prior art, and the production qualification rate of current collector products is reduced are solved.

Description

Technical Field

[0001] The present application relates to the technical field of copper foil electroplating, and in particular to an electroplating flanging mechanism and electroplating equipment. Background Art

[0002] In the process of manufacturing lithium-ion batteries, the current collector is an important component, which is mainly welded on the pole ear to collect current for better output.

[0003] In the process of producing current collectors, copper foil is electroplated. In the current composite copper foil electroplating production line, multiple conductive clamps are used to clamp the two edges of the composite copper foil along the width direction respectively. The conductive clamps are continuously operated and opened and closed through steel belt transmission and opening and closing mechanisms, thereby driving the copper foil to move in the electroplating tank to achieve electroplating.

[0004] However, due to the clamping force of the conductive clamp, the surface of the copper foil will be damaged during the production process. The damaged film surface needs to go through a series of processes such as water washing, anti-oxidation treatment, oven and edge trimming before running to winding. It needs to go through multiple rollers and pressure rollers. During the whole process, the stress is concentrated on the damaged part, so the probability of copper foil breaking is greatly increased, thereby reducing the production qualification rate of the product. Utility Model Content

[0005] The main purpose of the present application is to provide an electroplating flanging mechanism and electroplating equipment to solve the problem in the prior art that the copper foil of the current collector is easily torn and broken during the production process, thereby reducing the production qualification rate of the current collector product.

[0006] According to one aspect of the present application, a plating flanging mechanism is provided, comprising: a conductive clamp for clamping a film; a flanging assembly arranged on the side of the conductive clamp, the conductive clamp and the flanging assembly being arranged in sequence along the transmission direction of the film; the flanging assembly comprising two guide components, the two guide components being arranged opposite to each other along the width direction of the film; guide end faces are respectively provided on the two guide components, the horizontal distance between the two guide end faces is smaller than the width of the film, so that during the transmission of the film, the two side edges of the film are respectively in contact with the two guide end faces, so that the two side edges of the film are folded to form a flanging.

[0007] Furthermore, there are multiple groups of flanging assemblies, which are arranged in sequence and at intervals along the transmission direction of the film; wherein, along the transmission direction of the film, the horizontal distance between the two guide end surfaces in each group of flanging assemblies gradually decreases.

[0008] Furthermore, any one of the two guide components includes: a support frame, located on the side of the conductive clip, the length direction of the support frame is consistent with the width direction of the film; a guide roller, arranged on the support frame, at least a portion of the circumferential surface of the guide roller is a guide end surface, and the guide roller is movably arranged along the length direction of the support frame.

[0009] Furthermore, a mounting hole is provided on the support frame, and the mounting hole extends along the length direction of the support frame; at least a portion of the guide roller is installed in the mounting hole and moves along the extension direction of the mounting hole.

[0010] Furthermore, the guide component also includes: a connecting piece, one end of which is connected to the end surface of the guide roller, and the other end of the connecting piece is passed through the mounting hole; a fixing piece, which is connected to the fixing piece after passing through the mounting hole, and the fixing piece and the surface of the support frame stop each other to fix the guide roller at a predetermined position in the mounting hole; wherein the connecting piece and the mounting hole are clearance-matched.

[0011] Furthermore, an end of the connecting member away from the guide roller is provided with an external thread, a threaded hole is provided in the fixing member, and the connecting member and the fixing member are threadedly connected.

[0012] Furthermore, the conductive clamp has a clamping end surface for clamping the film, and a conductive layer electrically connected to the film is arranged on the clamping end surface, and the minimum distance between the conductive layer and the side end surface of the film is 30 mm to 50 mm.

[0013] Furthermore, the side edge of the film is folded after being attached to the guide end surface to form a flange, and the width of the flange is 30 mm to 50 mm.

[0014] Furthermore, the electroplating flanging mechanism also includes: an electroplating tank for containing electroplating liquid, a conductive clamp clamping the film for electroplating in the electroplating tank; an extrusion roller located at the outlet end of the electroplating tank, at least part of the film is in contact with the surface of the extrusion roller; and a flanging assembly located between the conductive clamp and the extrusion roller.

[0015] On the other hand, the present application also provides an electroplating device, including an electroplating flanging mechanism, and the electroplating flanging mechanism is the above-mentioned electroplating flanging mechanism.

[0016] Compared with the prior art, the technical solution of this application has at least the following technical effects:

[0017] The electroplating flanging mechanism provided in the present application is provided with a flanging assembly to solve the problem in the prior art that the film for producing the current collector is prone to breakage during the processing. The conductive clamp and the flanging assembly are arranged in sequence along the transmission direction of the film, so that after the conductive clamp clamps the film for electroplating, the edge position of the film contacts the guide end face, and the edge of the film is folded upward or downward to form a flanging under the squeezing and guiding action of the two guide end faces. In the subsequent transmission process of the film, the flanging contacts the surface of the roller and forms a double-layer or multi-layer structure with the film, thereby enhancing the structural strength of the edge of the film, reducing the risk of film breakage during the production process, and improving the qualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the electroplating flipping mechanism disclosed in the utility model;

[0020] Figure 2 It is a side view of the electroplating flipping mechanism disclosed in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the guide component in the electroplating turning mechanism disclosed in the utility model;

[0022] Figure 4 It is a schematic diagram of the cooperation between the conductive clip and the film in the electroplating flipping mechanism disclosed in the utility model.

[0023] The above drawings include the following reference numerals:

[0024] 1. Conductive clip; 100. Film; 2. Flanging assembly; 20. Guide component; 201. Guide end surface; 21. Support frame; 22. Guide roller; 210. Mounting hole; 23. Connector; 24. Fixing member; 10. Clamping end surface; 11. Conductive layer; 101. Side end surface; 102. Flanging; 4. Liquid squeezing roller. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0028] As mentioned in the background technology, in the process of producing the current collector, electroplating is required on the copper foil. In the prior art, a conductive clamp is used to clamp the two side edges of the film and move it in the electroplating tank. The conductive clamp plays the role of clamping the film and the clamping surface of the conductive clamp is electrically connected to the film, thereby forming a plating layer on the surface of the film. In order to maintain the clamping effect of the conductive clamp, the conductive clamp will exert a certain force on the film, which will cause stress concentration positions such as pits or scratches to be formed at the edge of the film. In the subsequent processing of the film, it is easy to cause damage to the film or even break the film, affecting the production quality of the product; therefore, in response to the above technical problems, the present application provides an electroplating flanging mechanism, including a conductive clamp 1 and a flanging assembly 2, the conductive clamp 1 and the flanging assembly 2 are arranged in sequence along the transmission direction of the film 100, after the conductive clamp 1 clamps the film 100 for electroplating, the flanging assembly 2 is used to fold the two side edges of the film 100 that are clamped, specifically, the flanging assembly 2 includes two guide components 20 , guide end faces are respectively arranged on the two guide components 20 and the two guide components 20 are opposite to each other along the width direction of the film 100, and the horizontal distance between the two guide end faces 201 is smaller than the width of the film 100, so that during the transmission process of the film 100, the edge of the film 100 will be folded after contacting the guide end face 201, thereby forming a flange at the edge position of the film 100 that has been clamped, and after the film 100 passes through a series of transmission rollers, the flange 102 will contact the surface of the roller, thereby squeezing the flange 102 to form a double-layer or multi-layer structure between it and the film 100, so that in the subsequent processing of the film 100, the edge position of the film 100 is protected by the flange 102, and the position where the stress is concentrated is shielded, and when the film 100 is wound up after the processing is completed, the flange 102 can be directly cut off with a cutter, which greatly reduces the probability of the film 100 breaking during the production process and improves the qualified rate of the product.

[0029] See also Figures 1 to 4 As shown, the present application provides an electroplating flanging mechanism, comprising: a conductive clamp 1, used to clamp a film 100; a flanging assembly 2, arranged on the side of the conductive clamp 1, and the conductive clamp 1 and the flanging assembly 2 are arranged in sequence along the transmission direction of the film 100; the flanging assembly 2 includes two guide components 20, and the two guide components 20 are relatively arranged along the width direction of the film 100; guide end surfaces 201 are respectively provided on the two guide components 20, and the horizontal distance between the two guide end surfaces 201 is smaller than the width of the film 100, so that during the transmission process of the film 100, the two side edges of the film 100 are respectively in contact with the two guide end surfaces 201, so that the two side edges of the film 100 are folded.

[0030] According to the electroplating flanging mechanism provided by the present application, it includes a conductive clamp 1 and a flanging assembly 2, the conductive clamp 1 is used to clamp the film 100 and electrically connect with the film 100, and when the conductive clamp 1 clamps the film 100 in the electroplating tank, the film 100 is electroplated; the conductive clamp 1 and the flanging assembly 2 are arranged in sequence along the transmission direction of the film 100, so that after the electroplating of the film 100 is completed, the film 100 is in contact with the guide end face 201 of the guide component 20, wherein the two guide components 20 are arranged opposite to each other along the width direction of the film 100, because the conductive clamp 1 is clamped at the edge positions on both sides of the film 100 along the width direction, and the horizontal distance between the two guide end faces 201 is less than the film The width of the film 100 is such that when the two side edges of the film 100 contact the two guide end surfaces 201 respectively, they will be folded under the guidance and extrusion of the two guide end surfaces 201, thereby forming a flange 102. In the subsequent transmission process, the flange 102 contacts the surface of the transmission roller and continues to be folded toward the middle of the film 100 until it is pressed against the surface of the film 100. In this way, the edge position clamped by the conductive clip 1 is included on the formed flange 102 or the flange 102 covers the clamping position, thereby improving the structural strength of the edge position of the film 100, reducing the risk of the film 100 being pulled off during the production process, and improving the qualified rate of the product.

[0031] Specifically, Figure 1 and Figure 2 As shown, there are multiple groups of flange assemblies 2, and the multiple flange assemblies 2 are sequentially arranged at intervals along the transmission direction of the film 100; wherein, along the transmission direction of the film 100, the horizontal distance between the two guide end faces 201 in each group of flange assemblies 2 gradually decreases. This arrangement can use multiple flange assemblies 2 to gradually fold and guide the flange of the film 100 toward the middle of the film 100, avoiding the problem of squeezing the film 100 due to the small horizontal distance between the two guide end faces 201, causing the film 100 to wrinkle.

[0032] In the embodiments provided by the present utility model, Figure 3As shown, any one of the two guide components 20 includes: a support frame 21, which is located on the side of the conductive clip 1, and the length direction of the support frame 21 is consistent with the width direction of the film 100; a guide roller 22, which is arranged on the support frame 21, and at least part of the circumferential surface of the guide roller 22 is a guide end surface 201, and the guide roller 22 is movably arranged along the length direction of the support frame 21. Among them, the guide roller 22 is supported by the support frame 21, and at least part of the circumferential surface of the guide roller 22 is set as the guide end surface 201, so that the arc-shaped guide end surface 201 protects the edge of the film 100 and avoids squeezing between the film 100 and the guide roller 22. It should be noted here that the horizontal distance between the two guide end surfaces 201 is the minimum horizontal distance between the circumferential surfaces of the two guide rollers 22. Preferably, the structures of the two guide components 20 are consistent.

[0033] In order to adjust the horizontal distance between the two guide end surfaces 201 for films of different widths, the support frame 21 is provided with a mounting hole 210, which extends along the length direction of the support frame 21; at least part of the guide roller 22 is installed in the mounting hole 210 and moves along the extension direction of the mounting hole 210. In this way, the distance between the two guide rollers 22 can be adjusted according to films 100 of different sizes, thereby achieving the purpose of adjusting the horizontal distance between the two guide end surfaces 201.

[0034] Furthermore, in order to facilitate the movement of the guide roller 22, the guide component 20 further includes: a connecting member 23, one end of which is connected to the end face of the guide roller 22, and the other end of which is inserted into the mounting hole 210; a fixing member 24, which is connected to the fixing member 24 after passing through the mounting hole 210, and the fixing member 24 and the surface of the support frame 21 are mutually stopped, so as to fix the guide roller 22 at a predetermined position in the mounting hole 210; wherein the connecting member 23 and the mounting hole 210 are clearance-matched. This arrangement can utilize the connecting member 23 to drive the guide roller 22 to move, and at the same time utilize the mounting hole 210 to limit and guide the connecting member 23, and after the guide roller 22 moves to the specified position, the fixing member 24 is connected to the support frame 21 until the fixing member 24 and the surface of the support frame 21 are mutually stopped, thereby fixing the guide roller 22.

[0035] In a specific implementation, an end of the connecting member 23 away from the guide roller 22 is provided with an external thread, and a threaded hole is provided in the fixing member 24, and the connecting member 23 is threadedly connected to the fixing member 24. In this arrangement, the connecting member 23 can be fixed or released by screwing the fixing member 24, which has a simple structure and is easy to operate.

[0036] In the present application, the conductive clamp 1 has a clamping end face 10 for clamping the film 100, and a conductive layer 11 electrically connected to the film 100 is arranged on the clamping end face 10, and the minimum distance between the conductive layer and the side end face 101 of the film 100 is 30mm to 50mm. The side edge of the film 100 is folded after being attached to the guide end face 201 to form a flange 102, and the width of the flange 102 is 30mm to 50mm. Among them, the maximum horizontal distance between the clamping end face 10 and the side end face 101 is 40mm to 60mm, which is suitable for the film 100 with a larger width. The width of the flange 102 is set to 30mm to 50mm, so that the position where the film 100 is clamped can be included in the flange 102, thereby increasing the force of the film surface to resist tearing and reducing the risk of film breakage. Preferably, the width of the flange 102 refers to the horizontal distance between the side end face 101 of the film 100 and the fold of the film 100. Since there are multiple flange assemblies 2, the maximum width of the flange 102 is 30 mm to 50 mm. In the process of the flange 102 being fitted with the subsequent liquid extrusion roller 4 or the conveying roller, the flange 102 is extruded toward the middle of the film 100 to form a double-layer structure of the film 100, or the flange 102 is extruded to form a multi-layer structure, thereby strengthening the structural strength at the edge of the film 100.

[0037] The electroplating flanging mechanism also includes: an electroplating tank for containing electroplating liquid, a conductive clamp 1 clamping the film 100 for electroplating in the electroplating tank; a liquid squeezing roller 4, located at the outlet end of the electroplating tank, at least part of the film 100 is in contact with the surface of the liquid squeezing roller 4; and a flanging assembly 2 located between the conductive clamp 1 and the liquid squeezing roller 4. After the film 100 passes through the guide end surface 201 to form the flanging 102, it is rolled and shaped by the liquid squeezing roller 4, so that the edge of the film 100 forms a double-layer or multi-layer curling stack, which can greatly improve the strength of the film, thereby avoiding the risk of film breakage caused by various stations before running to winding. The curling stack is cut off at the trimming station, which will not affect the final winding quality of the product, and the qualified rate loss caused by film breakage is reduced from 10% to less than 3%.

[0038] The utility model also provides an electroplating device, comprising an electroplating flanging mechanism, and the electroplating flanging mechanism is the electroplating flanging mechanism of the above embodiment.

[0039] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0040] According to the electroplating flanging mechanism provided by the present application, it includes a conductive clamp 1 and a flanging assembly 2, the conductive clamp 1 is used to clamp the film 100 and electrically connect with the film 100, and when the conductive clamp 1 clamps the film 100 in the electroplating tank, the film 100 is electroplated; the conductive clamp 1 and the flanging assembly 2 are arranged in sequence along the transmission direction of the film 100, so that after the electroplating of the film 100 is completed, the film 100 is in contact with the guide end face 201 of the guide component 20, wherein the two guide components 20 are arranged opposite to each other along the width direction of the film 100, because the conductive clamp 1 is clamped at the edge positions on both sides of the film 100 along the width direction, and the horizontal distance between the two guide end faces 201 is less than the film The width of the film 100 is such that when the two side edges of the film 100 contact the two guide end surfaces 201 respectively, they will be folded under the guidance and extrusion of the two guide end surfaces 201, thereby forming a flange 102. In the subsequent transmission process, the flange 102 contacts the surface of the transmission roller and continues to be folded toward the middle of the film 100 until it is pressed against the surface of the film 100. In this way, the edge position clamped by the conductive clip 1 is included on the formed flange 102 or the flange 102 covers the clamping position, thereby improving the structural strength of the edge position of the film 100, reducing the risk of the film 100 being pulled off during the production process, and improving the qualified rate of the product.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0043] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electroplating flanging mechanism, characterized in that: include: A conductive clamp (1) for clamping a film (100); A flanging assembly (2) is arranged on the side of the conductive clip (1), and the conductive clip (1) and the flanging assembly (2) are arranged in sequence along the transmission direction of the film (100); The flanging assembly (2) comprises two guide components (20), and the two guide components (20) are arranged opposite to each other along the width direction of the film (100); The two guide components (20) are respectively provided with guide end surfaces (201), and the horizontal distance between the two guide end surfaces (201) is smaller than the width of the film (100), so that during the transmission of the film (100), the two side edges of the film (100) are respectively in contact with the two guide end surfaces (201), so that the two side edges of the film (100) are folded to form flanges (102).

2. The electroplating flanging mechanism according to claim 1, characterized in that: The flanging components (2) are multiple groups, and the multiple flanging components (2) are sequentially arranged at intervals along the transmission direction of the film (100); Wherein, along the transmission direction of the film (100), the horizontal distance between the two guide end surfaces (201) in each group of the flanging components (2) gradually decreases.

3. The electroplating flanging mechanism according to claim 1, characterized in that: Any one of the two guide components (20) comprises: A support frame (21) is located on the side of the conductive clip (1), and the length direction of the support frame (21) is consistent with the width direction of the film (100); The guide roller (22) is arranged on the support frame (21), at least a portion of the circumferential surface of the guide roller (22) is a guide end surface (201), and the guide roller (22) is movably arranged along the length direction of the support frame (21).

4. The electroplating flanging mechanism according to claim 3, characterized in that: The support frame (21) is provided with a mounting hole (210), and the mounting hole (210) extends along the length direction of the support frame (21); At least a portion of the guide roller (22) is installed in the installation hole (210) and moves along the extension direction of the installation hole (210).

5. The electroplating flanging mechanism according to claim 4, characterized in that: The guide component (20) further comprises: A connecting member (23), one end of the connecting member (23) being connected to the end surface of the guide roller (22), and the other end of the connecting member (23) being inserted into the mounting hole (210); a fixing member (24), wherein the connecting member (23) passes through the mounting hole (210) and is connected to the fixing member (24), and the fixing member (24) and the surface of the support frame (21) stop each other so as to fix the guide roller (22) at a predetermined position in the mounting hole (210); Wherein, the connecting piece (23) and the mounting hole (210) are clearance-matched.

6. The electroplating flanging mechanism according to claim 5, characterized in that: An end of the connecting member (23) away from the guide roller (22) is provided with an external thread, a threaded hole is provided in the fixing member (24), and the connecting member (23) and the fixing member (24) are threadedly connected.

7. The electroplating flanging mechanism according to claim 1, characterized in that: The conductive clamp (1) has a clamping end surface (10) for clamping the film (100), and a conductive layer (11) electrically connected to the film (100) is arranged on the clamping end surface (10), and the minimum distance between the conductive layer (11) and the side end surface (101) of the film (100) is 30 mm to 50 mm.

8. The electroplating flanging mechanism according to claim 1, characterized in that: The side edge of the film (100) is folded after being attached to the guide end surface (201) to form a flange (102), and the width of the flange (102) is 30 mm to 50 mm.

9. The electroplating flanging mechanism according to claim 1, characterized in that: The electroplating flanging mechanism also includes: An electroplating tank, used for containing an electroplating solution, wherein the conductive clamp (1) clamps the film (100) for electroplating in the electroplating tank; A squeezing roller (4) is located at the outlet end of the electroplating tank, and at least a portion of the film (100) is in contact with the surface of the squeezing roller (4); The flanging assembly (2) is located between the conductive clamp (1) and the squeezing roller (4).

10. An electroplating device, comprising an electroplating flanging mechanism, characterized in that: The electroplating flanging mechanism is the electroplating flanging mechanism described in any one of claims 1 to 9.

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