Aluminum foil folding device

Abstract

The utility model provides an aluminium foil edge folding device, the aluminium foil of the feed pressure roller supplies and sends the plane state, the inclined guide roller is two, is arranged between the bending pair of rollers and laminating pair of rollers in the mode of left and right symmetry, the inclined guide roller is pressed to the middle to the aluminium foil edge after folding, laminating pair of rollers press the edge of aluminium foil to the aluminium foil main part in the mode of S, thereby releases the stress which the edge of aluminium foil produces simultaneously to the indentation. The aluminium foil edge folding device can form the edge covering structure to the two sides of aluminium foil and release the stress through laminating pair of rollers, thereby guaranteeing that the aluminium foil after edge folding has better setting effect. The aluminium foil edge folding device is adopted to edge fold the two sides of aluminium foil, and the edge of aluminium foil is smooth after edge folding, can fundamentally avoid the discharge caused by the defect of the two sides of aluminium foil, avoids the high voltage breakdown of element. Can improve the voltage resistance intensity of element, is favorable to the more reliable operation of product.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to an aluminum foil folding device. Background Technology

[0002] In capacitor structures, aluminum foil is typically used as the capacitor's electrodes (anode or cathode), with insulating films on both sides. If the edges of the aluminum foil are left flat (unfolded), the edges are sharp and can easily scratch the insulating films. Tiny burrs on the aluminum foil edges can also easily cause short circuits during capacitor use. Therefore, capacitors are usually folded during manufacturing to ensure electrical safety. However, conventional aluminum foil uses a single-sided folded edge structure, such as the high-voltage resistant power capacitor element disclosed in CN205069384U. While a single-sided folded edge structure can overcome the above problems to some extent, a double-sided folded edge structure would undoubtedly solve the problem more perfectly. This utility model proposes a technical solution that can simultaneously fold aluminum foil on both sides. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide an aluminum foil folding device, which solves the problem that existing folding devices can only fold one side.

[0004] To solve the above-mentioned technical problems, this utility model provides an aluminum foil folding device (50), including: a feeding pressure roller (51), a bending roller (52), an inclined guide roller (53), and a laminating roller (54). The feeding pressure roller (51) feeds aluminum foil in a planar state. There are two inclined guide rollers (53), which are arranged symmetrically between the bending roller (52) and the laminating roller (54). The inclined guide roller (53) presses the edge of the bent aluminum foil towards the center. The laminating roller (54) presses the folded edge of the aluminum foil towards the aluminum foil body in an S-shape, thereby releasing the stress generated by the folding of the aluminum foil while forming an indentation.

[0005] The bending rollers (52) include a column roller (52a) and a groove roller (52b). The column roller (52a) is located at the bottom and the groove roller (52b) is located at the top. The column roller and the groove roller are not directly connected. The groove roller (52b) includes a main roller in the middle and guide wheels on both sides. The diameter of the main roller of the groove roller is smaller than the diameter of the column roller, and the diameter of the guide wheels on both sides is larger than the diameter of the column roller. The column roller and the guide wheels overlap in the axial direction, and the area of ​​the overlap is not less than one-quarter of the circumference of the column roller. A gap is maintained between the two sides of the column roller and the guide wheels. The size of the gap is slightly larger than the thickness of the aluminum foil. A distance is maintained between the surface of the groove roller and the surface of the column roller. The size of the distance is much larger than the thickness of the aluminum foil.

[0006] The lower edge of the main roller is higher than the upper edge of the column roller; the axis of the main roller is arranged to the right relative to the axis of the column roller.

[0007] The feeding roller (51), bending roller (52) and laminating roller (54) are arranged in an upward-sloping direction; and the bending roller (52) is arranged in a downward manner relative to the feeding roller (51) and laminating roller (54) on both sides, so that the aluminum foil forms an upward reverse angle after passing through the bending roller (52).

[0008] The inclined guide roller (53) is arranged at a 45-degree angle, and the height and lateral position of the inclined guide roller are adjustable.

[0009] It also includes a frame structure (55), and the feeding roller (51), bending roller (52), inclined guide roller (53) and laminating roller (54) are all mounted on the frame structure (55).

[0010] The aluminum foil folding device provided by this utility model can simultaneously fold both sides of the aluminum foil inward to form a wrapped edge structure, and release stress through lamination rollers, thereby ensuring that the folded aluminum foil has a better shaping effect. By using the aluminum foil folding device to fold both sides of the aluminum foil, the edges of the folded aluminum foil are flat and smooth, which can fundamentally avoid discharge caused by defects on both sides of the aluminum foil and prevent high-voltage breakdown of components. It can improve the withstand voltage strength of components and facilitate more reliable product operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the aluminum foil folding device according to an embodiment of the present invention (with reference to the aluminum foil folding process).

[0012] Figure 2 This is a front view (viewed from the right) of the bending rollers according to an embodiment of the present invention.

[0013] Figure 3 This is a schematic diagram of the inclined guide roller described in an embodiment of the present invention.

[0014] Figure 4 This is a schematic diagram of the lamination process of the laminating rollers described in an embodiment of the present invention. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] Example like Figure 1-3 As shown, this utility model provides an aluminum foil folding device 50, including: a feeding roller 51, a bending roller 52, an inclined guide roller 53, and a laminating roller 54. The feeding roller 51 feeds aluminum foil in a flat state. There are two inclined guide rollers 53, which are arranged symmetrically between the bending roller 52 and the laminating roller 54. The inclined guide roller 53 presses the edge of the bent aluminum foil towards the center. The laminating roller 54 presses the folded edge of the aluminum foil towards the aluminum foil body in an S-shape, thereby releasing the stress generated by the folding of the aluminum foil while forming an indentation.

[0019] The laminating rollers 54 include two rollers, a first roller on the left and a second roller on the right. The height of the second roller is slightly higher than that of the first roller, so that the aluminum foil first passes through the first roller, goes around the first roller, and enters the extrusion gap between the first and second rollers. Then it extends out from the lower part of the second roller to the right, thus forming an S-shaped movement that can repeatedly extrude the aluminum foil. When passing through the first roller, the aluminum foil body side surface bends and extrudes the folded edge side surface; when passing through the second roller, the folded edge side surface bends and extrudes the aluminum foil body side surface, thereby releasing stress.

[0020] The bending rollers 52 include a column roller 52a and a groove roller 52b. The column roller 52a is located at the lower part, and the groove roller 52b is located at the upper part. The column roller and the groove roller are not directly connected. The groove roller 52b includes a main roller in the middle and guide wheels on both sides. The diameter of the main roller of the groove roller is smaller than the diameter of the column roller, and the diameter of the guide wheels on both sides is larger than the diameter of the column roller. The column roller and the guide wheels overlap in the axial direction, and the overlapping area is not less than one-quarter of the circumference of the column roller. A gap is maintained between the two sides of the column roller and the guide wheels, and the size of the gap is slightly larger than the thickness of the aluminum foil. A distance is maintained between the surface of the groove roller and the surface of the column roller, and the size of the distance is much larger than the thickness of the aluminum foil.

[0021] After passing through the bending roller 52, the two sides of the aluminum foil are bent downwards. The feeding roller 51, bending roller 52 and laminating roller 54 form a small V-shaped structure. That is, the cross-section formed by the upper edges of the feeding roller and laminating roller 54 passes through the groove roller of the bending roller, thus forming an upward reverse angle. This allows for better tilting guidance when passing through the tilting guide roller.

[0022] The lower edge of the main roller is higher than the upper edge of the column roller; the axis of the main roller is arranged to the right relative to the axis of the column roller.

[0023] The feeding roller 51, bending roller 52, and laminating roller are arranged in an upward-sloping direction; and the bending roller 52 is arranged in a downward manner relative to the feeding roller 51 and laminating roller 54 on both sides, so that the aluminum foil forms an upward reverse angle after passing through the bending roller 52; since the two sides of the aluminum foil are bent downward, which is opposite to the upward reverse angle of the aluminum foil during the process of aluminum foil travel, the two sides of the bent edges of the aluminum foil bear a greater tensile force together, so that under the action of the two sides of the tensile force, the two sides of the aluminum foil are bent and simultaneously tilted inward and gathered together.

[0024] The inclined guide roller 53 is arranged at a 45-degree angle, and the height and lateral position of the inclined guide roller are adjustable.

[0025] It also includes a frame structure 55, and the feeding roller 51, bending roller 52, inclined guide roller 53 and laminating roller 54 are all mounted on the frame structure 55.

[0026] The aluminum foil folding device provided by this utility model can simultaneously fold both sides of the aluminum foil inward to form a wrapped edge structure, and release stress through lamination rollers, thereby ensuring that the folded aluminum foil has a better shaping effect. By using the aluminum foil folding device to fold both sides of the aluminum foil, the edges of the folded aluminum foil are flat and smooth, which can fundamentally avoid discharge caused by defects on both sides of the aluminum foil and prevent high-voltage breakdown of components. It can improve the withstand voltage strength of components and facilitate more reliable product operation.

[0027] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An aluminum foil folding device (50), characterized in that, include: The feeding roller (51), bending roller (52), inclined guide roller (53) and laminating roller (54) are provided. The feeding roller (51) feeds aluminum foil in a flat state. There are two inclined guide rollers (53), which are arranged symmetrically between the bending roller (52) and the laminating roller (54). The inclined guide roller (53) presses the edge of the bent aluminum foil towards the middle. The laminating roller (54) presses the folded edge of the aluminum foil towards the aluminum foil body in an S-shape, thereby releasing the stress generated by the folded edge of the aluminum foil while forming an indentation.

2. The aluminum foil folding device (50) according to claim 1, characterized in that, The bending rollers (52) include a column roller (52a) and a groove roller (52b). The column roller (52a) is located at the bottom and the groove roller (52b) is located at the top. The column roller and the groove roller are not directly connected. The groove roller (52b) includes a main roller in the middle and guide wheels on both sides. The diameter of the main roller of the groove roller is smaller than the diameter of the column roller, and the diameter of the guide wheels on both sides is larger than the diameter of the column roller. The column roller and the guide wheels overlap in the axial direction, and the area of ​​the overlap is not less than one-quarter of the circumference of the column roller. A gap is maintained between the two sides of the column roller and the guide wheels. The size of the gap is slightly larger than the thickness of the aluminum foil. A distance is maintained between the surface of the groove roller and the surface of the column roller. The size of the distance is much larger than the thickness of the aluminum foil.

3. The aluminum foil folding device (50) according to claim 2, characterized in that, The lower edge of the main roller is higher than the upper edge of the column roller; the axis of the main roller is arranged to the right relative to the axis of the column roller.

4. The aluminum foil folding device (50) according to claim 1, characterized in that, The feeding roller (51), bending roller (52) and laminating roller are arranged in an upwardly inclined direction; and the bending roller (52) is arranged in a downward manner relative to the feeding roller (51) and laminating roller (54) on both sides, so that the aluminum foil forms an upward reverse angle after passing through the bending roller (52).

5. The aluminum foil folding device (50) according to claim 1, characterized in that, The inclined guide roller (53) is arranged at a 45-degree angle, and the height and lateral position of the inclined guide roller are adjustable.

6. The aluminum foil folding device (50) according to claim 1, characterized in that, It also includes a frame structure (55), and the feeding roller (51), bending roller (52), inclined guide roller (53) and laminating roller (54) are all mounted on the frame structure (55).

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