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, the two guide parts are oppositely arranged in the breadth direction of the thin film, each guide part comprises a guide end face, and the guide end faces extend in the conveying direction of the thin film; the horizontal distance between the two guide end faces is gradually reduced in the conveying direction of the thin film; wherein the minimum horizontal distance between the two guide end faces is smaller than the breadth of the thin film, so that the two side edges of the thin film are turned over after making contact with the two guide end faces correspondingly, 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, the two guide components respectively comprising guide end faces, the guide end faces extending along the transmission direction of the film; along the transmission direction of the film, the horizontal distance between the two guide end faces gradually decreases; wherein the minimum horizontal distance between the two guide end faces is smaller than the width of the film, so that the two side edges of the film are folded after contacting the two guide end faces respectively, to form a flanging.

[0007] Furthermore, at least a portion of the guide end surface is an arc-shaped surface.

[0008] Furthermore, any one of the two guide components includes: a guide block, a bearing end surface is provided on the guide block, an angle is formed between the bearing end surface and the guide end surface, and at least a part of the bottom surface of the film is in contact with the bearing end surface.

[0009] Furthermore, the guide component also includes: a transition connection surface, both sides of which are respectively connected to the bearing end surface and the guide end surface, and the transition connection surface is an arc-shaped surface.

[0010] Furthermore, the guide component also includes: a shielding plate, which is arranged on a side of the guide end surface away from the bearing end surface, and the shielding plate extends from the guide end surface to above the bearing end surface to block the flange.

[0011] Furthermore, the guide component also includes: a support frame, a mounting hole is provided on the support frame, and the mounting hole extends along the width direction of the film; at least part of the guide block is installed in the mounting hole and is movably arranged along the extension direction of the mounting hole to adjust the distance between the two guide end faces.

[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 by 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. In this way, 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 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 to form 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 clamp; 10. Clamping end face; 100. Film; 2. Flanging assembly; 20. Guide component; 201. Guide end face; 102. Flanging; 21. Guide block; 210. Load-bearing end face; 22. Transition connection face; 23. Shielding plate; 24. Support frame; 240. Mounting hole; 25. Fixing part; 11. Conductive layer; 101. Side end face; 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 needs to be performed on the copper foil. In the prior art, a conductive clamp is used to clamp the two side edges of the film and move them 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 apply a certain force to 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 film processing process, 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 clamped, specifically, the flanging assembly 2 includes two guide components 20, guide end surfaces are respectively provided on the two guide components 20 and the two guide components 20 are opposite in the width direction of the film 100. The guide end surface 201 extends along the transmission direction of the film 100, and along the transmission direction of the film 100, the horizontal distance between the two guide end surfaces 201 gradually decreases, and the minimum horizontal distance between the two guide end surfaces 201 is smaller than the width of the film 100. In this way, during the transmission of the film 100, the edge of the film 100 will be folded under the gradual squeezing effect of the two guide end surfaces 201 after contacting the guide end surface 201, so that the edge position of the film 100 that has been clamped is formed into a flange 102. After the conveying roller, the flange 102 is brought into contact with the surface of the roller, so that the flange 102 is squeezed to form a double-layer or multi-layer structure with the film 100. In this way, in the subsequent processing of the film 100, the edge position of the film 100 is protected by the flange 102, and the stress concentration position is shielded. When the film 100 is processed and rolled up, the flange 102 can be directly cut off with a cutter. This greatly reduces the probability of the film 100 breaking during the production process and improves the product qualification rate.

[0029] See also Figures 1 to 4As 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 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, and the two guide components 20 respectively include guide end surfaces 201, and the guide end surfaces 201 extend along the transmission direction of the film 100; along the transmission direction of the film 100, the horizontal distance between the two guide end surfaces 201 gradually decreases; wherein, the minimum horizontal distance between the two guide end surfaces 201 is less than the width of the film 100, so that the two side edges of the film 100 are folded after contacting the two guide end surfaces 201 respectively, to form a flanging 102.

[0030] According to the electroplating flanging mechanism provided by the utility model, 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 to the film 100, when the conductive clamp 1 is in the process of clamping 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 relatively along the width direction of the film 100, this is because the conductive clamp 1 is clamped at the edge positions on both sides of the film 100 along the width direction, and the guide end faces 201 extend along the transmission direction of the film 100; along the transmission direction of the film 100, the horizontal distance between the two guide end faces 201 gradually decreases; the minimum horizontal distance between the two guide end faces 201 is less than the width of the film 100, so that after the edge of the film 100 contacts the guide end face 201, as the film 100 moves, Under the squeezing and guiding action of the two guide end surfaces 201, the edge of the film 100 is folded upward to form a flange 102. Preferably, the maximum horizontal distance between the two guide end surfaces 201 is smaller than the width of the film 100, so that the edge of the film 100 can be gradually squeezed and guided, so that the width of the flange 102 is gradually increased, avoiding collision between the edge of the film 100 and the guide component 20, and also avoiding the risk of the edge of the film 100 being easily torn due to the folding width of the edge of the film 100 being too large. In the subsequent transmission process, the flange 102 contacts the surface of the transmission roller and continues to fold toward the middle direction of the film 100 until it is pressed on 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] Preferably, at least a portion of the guide end surface 201 is an arc-shaped surface, so as to avoid a rigid collision between the end edge of the film 100 and the guide component 20 or the guide end surface 201, thereby preventing the film 100 from wrinkling.

[0032] like Figure 3 As shown, any one of the two guide components 20 includes: a guide block 21, a bearing end surface 210 is provided on the guide block 21, and an angle is formed between the bearing end surface 210 and the guide end surface 201, and at least a part of the bottom surface of the film 100 is in contact with the bearing end surface 210. In this way, when the film 100 passes through the bearing end surface 210 during the transmission process, the edge of the film 100 is folded upward under the extrusion and stop effect of the guide end surface 201. Preferably, in the present application, the structures of the two guide components 20 are consistent.

[0033] In order to provide better support and guidance for the film 100, the guide component 20 further includes: a transition connection surface 22, the two sides of which are respectively connected to the bearing end surface 210 and the guide end surface 201, and the transition connection surface 22 is an arc surface. Compared with the angled structure between the bearing end surface 210 and the guide end surface 201, the arc-shaped transition connection surface 22 can support the folded film, and prevent the film 100 from being suspended at the angled position after being folded, thereby improving the guiding effect of the guide end surface 201 on the film, so that the edge of the film 100 is folded along the guide end surface 201.

[0034] Furthermore, the guide component 20 further includes: a shielding plate 23, which is arranged on the side of the guide end surface 201 away from the bearing end surface 210, and the shielding plate 23 extends from the guide end surface 201 to the upper side of the bearing end surface 210 to block the flange 102. Through the shielding effect of the shielding plate 23, the flange 102 folded upward can be bent toward the middle of the film 100, which facilitates the subsequent roller to squeeze the flange 102 and form a double-layer structure with the film 100.

[0035] In order to adapt to films of different sizes, the guide component 20 further includes: a support frame 24, on which a mounting hole 240 is provided, and the mounting hole 240 extends along the width direction of the film 100; at least part of the guide block 21 is installed in the mounting hole 240 and is movably provided along the extension direction of the mounting hole 240 to adjust the distance between the two guide end faces 201. By adjusting the distance between the two guide end faces 201, it can adapt to films 100 of different widths, thereby improving the versatility of the entire mechanism. Specifically, a connecting rod is provided on the guide block 21, and the connecting rod is connected to the fixing member 25 after passing through the mounting hole 240. The connecting rod and the mounting hole 240 are clearance-matched to drive the guide block 21 to move along the extension direction of the mounting hole 240. The end of the connecting rod away from the guide block 21 has an external thread, and the fixing member 25 has a threaded hole. The connecting rod and the fixing member are threadedly matched. The fixing member 25 is screwed to achieve the purpose of releasing the connecting rod so that it can move in the mounting hole 240, or the fixing member 25 and the support frame 24 are fitted with each other, and the connecting rod is fixed at a predetermined position by friction force, so as to fix the guide block 21 at the specified position. The structure is simple and 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 11 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 utility model, 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 brought into contact with the guide end surface 201 of the guide component 20, wherein the two guide components 20 are arranged relative 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 guide end surface 201 extends along the transmission direction of the film 100; along the transmission direction of the film 100, the horizontal distance between the two guide end surfaces 201 gradually decreases. ; The minimum horizontal distance between the two guide end surfaces 201 is smaller than the width of the film 100, so that after the edge of the film 100 contacts the guide end surface 201, as the film 100 moves, the edge of the film 100 is folded upward under the squeezing and guiding action 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 fold 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), the two guide components (20) are arranged opposite to each other along the width direction of the film (100), the two guide components (20) respectively comprise guide end surfaces (201), and the guide end surfaces (201) extend along the transmission direction of the film (100); Along the transmission direction of the film (100), the horizontal distance between the two guide end surfaces (201) gradually decreases; The minimum horizontal distance between the two guide end surfaces (201) is smaller than the width of the film (100), so that the two side edges of the film (100) are folded after contacting the two guide end surfaces (201) respectively, so as to form flanges (102).

2. The electroplating flanging mechanism according to claim 1, characterized in that: At least a portion of the guide end surface (201) is an arc-shaped surface.

3. The electroplating flanging mechanism according to claim 1, characterized in that: Any one of the two guide components (20) comprises: A guide block (21), wherein a bearing end surface (210) is provided on the guide block (21), an angle is formed between the bearing end surface (210) and the guide end surface (201), and at least a portion of the bottom surface of the film (100) is in contact with the bearing end surface (210).

4. The electroplating flanging mechanism according to claim 3, characterized in that: The guide component (20) further comprises: A transition connection surface (22), the two sides of which are respectively connected to the bearing end surface (210) and the guide end surface (201), and the transition connection surface (22) is an arc-shaped surface.

5. The electroplating flanging mechanism according to claim 3, characterized in that: The guide component (20) further comprises: A shielding plate (23) is arranged on a side of the guide end surface (201) away from the bearing end surface (210), and the shielding plate (23) extends from the guide end surface (201) to above the bearing end surface (210) to block the flange (102).

6. The electroplating flanging mechanism according to claim 3, characterized in that: The guide component (20) further comprises: A support frame (24), wherein a mounting hole (240) is provided on the support frame (24), and the mounting hole (240) extends along the width direction of the film (100); At least part of the guide block (21) is installed in the installation hole (240) and is movably arranged along the extension direction of the installation hole (240) to adjust the distance between the two guide end surfaces (201).

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 provided 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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