A cylinder battery steel shell flaring mechanism

Abstract

The utility model relates to a battery field, concretely relates to a cylindrical battery steel shell flaring mechanism, include: the machine table and slide through in the machine table perforation for placing cylindrical battery steel shell's stand, a plurality of surround stand setting's inner support plate, the bottom of inner support plate is slidably installed on the machine table, to make inner support plate radial movement to support the inner periphery of cylindrical battery steel shell, at least one driven block is fixed in the inner wall of inner support plate, the outer wall of stand is fixed with push block, push block is overlapped on driven block, and the cooperation surface of push block and driven block is the inclined plane of mutual action. The utility model is provided with inner support plate, drive arrangement and push block etc. component, and the inner wall of cylindrical battery steel shell sleeve is positioned in the center and is supported and is positioned, avoids steel shell positioning deviation, improves flaring accuracy, reduces the problem that radial extrusion easily leads to shell body out of round or local depression when hole expanding die is pressed down simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a flaring mechanism for a cylindrical battery steel shell. Background Technology

[0002] Cylindrical batteries are widely used in electric vehicles, energy storage systems, and other fields due to their high energy density and mature manufacturing processes. One of the core components of a cylindrical battery is its steel casing. During its manufacturing process, the ends of the steel casing typically need to be flared to meet the requirements of subsequent processes such as edge rolling and sealing. In current technology, the flaring process of the cylindrical battery steel casing mainly relies on various flaring molds. Before flaring, the steel casing usually needs to be clamped and positioned to ensure processing accuracy.

[0003] Some existing methods use external grippers or clamps to apply radial clamping force from the outside of the steel shell for positioning. While this method is relatively simple in structure, for cylindrical battery steel shells with thin walls (e.g., 0.2-0.5mm), the external clamping force acts directly on the outside of the thin-walled steel shell. During the clamping process, the originally circular cross-section of the steel shell is easily flattened or ellipticalized. The steel shell may tilt or shift slightly. When the flaring mold applies radial expansion force to the port afterward, if the steel shell deforms, it is easy to produce irregular deformations such as bulging and wrinkles due to uneven force, which seriously affects the accuracy of the flaring shape. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a cylindrical battery steel shell flaring mechanism to solve the technical problems in the prior art.

[0005] To achieve the above objectives, this utility model provides a cylindrical battery steel shell flaring mechanism, comprising:

[0006] The machine base and the column that slides through the through hole in the machine base for placing the cylindrical battery steel shell;

[0007] Multiple inner support plates are arranged around the column. The bottom of the inner support plates is slidably mounted on the machine platform so that the inner support plates can move radially to support the inner circumferential surface of the cylindrical battery steel shell. At least one driven block is fixed on the inner wall of the inner support plate.

[0008] A push block is fixed to the outer wall of the column. The push block overlaps the driven block, and the mating surface between the push block and the driven block is an interacting inclined surface.

[0009] A drive device is fixed to the bottom wall of the machine base, and the output end of the drive device is fixedly installed at the bottom of the column;

[0010] A bulging assembly used to bulge the inner circumferential surface of a cylindrical battery steel casing.

[0011] Preferably, the number of inner support plates is at least three, and the inner support plates are evenly distributed around the column in the circumferential direction.

[0012] Preferably, when the driving device drives the column to move downward, the inclined surface of the push block presses against the inclined surface of the driven block, causing the inner support plate to move radially outward to tighten the inner wall of the steel shell.

[0013] Preferably, the push block has a protruding inclined block, and the driven block has an inclined groove that matches the shape of the inclined block, and the inclined block is embedded in the inclined groove to form a sliding fit.

[0014] Preferably, the hole-expanding assembly includes a bracket, a hydraulic cylinder, and a hole-expanding mold. The bracket is fixed on the machine base, the hydraulic cylinder is mounted on the bracket, and the hole-expanding mold is fixed at the output end of the hydraulic cylinder and located directly above the column.

[0015] Preferably, the cylindrical battery steel shell flaring mechanism further includes a positioning component, which includes multiple outer clamping plates arranged around the column, and each outer clamping plate slides through the machine base. Its bottom is hinged to the outer wall of the column through a hinge rod. When the column moves down, the outer clamping plates are driven to move radially inward through the hinge rod to clamp the outer wall of the steel shell.

[0016] Preferably, both the outer clamping plate and the inner support plate are arc-shaped structures that match the circumference of the cylindrical battery steel shell.

[0017] Preferably, the surfaces of the outer clamping plate and the inner support plate that contact the steel shell are provided with an engineering plastic layer.

[0018] Preferably, the drive device is provided with a mounting bracket at the bottom, which is fixed to the bottom wall of the machine base.

[0019] The beneficial effects of this utility model are as follows: The cylindrical battery steel shell flaring mechanism of this utility model, through the setting of components such as the inner support plate, the driving device and the push block, can center and tighten the inner wall of the cylindrical battery steel shell, avoid the steel shell positioning deviation, improve the flaring accuracy, and at the same time reduce the problem that radial extrusion can easily cause the shell to become out of round or locally dented when the flaring die is pressed down.

[0020] By setting up components such as columns, outer clamping plates, and hinge rods, the outer clamping plate moves closer to the outer wall of the cylindrical battery steel shell. Under the clamping of the inner and outer sides of the cylindrical battery steel shell, the inner and outer walls of the steel shell are simultaneously clamped and positioned, thereby synchronously constraining the inner and outer walls of the steel shell and forcibly maintaining coaxiality. This avoids the problem of easy deformation and displacement of thin-walled shells during flaring, and further improves the flaring accuracy. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a schematic diagram of the main cross section of the inner support plate, outer clamping plate, and column components of this utility model;

[0024] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A;

[0025] Figure 4 This is an exploded view of the push block, inclined block, and driven block components of this utility model.

[0026] The diagram is marked as follows:

[0027] 1. Machine base; 2. Column; 3. Inner support plate; 4. Driven block; 401. Inclined groove; 5. Push block; 501. Inclined block; 6. Drive device; 601. Mounting frame; 7. Outer clamping plate; 8. Hinge rod; 9. Bracket; 10. Hydraulic cylinder; 11. Hole enlarging mold. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] The first aspect of this utility model proposes a flaring mechanism for a cylindrical battery steel casing, such as... Figure 1-4 As shown, it includes:

[0031] The machine base 1 and the column 2 that slides through the hole in the machine base 1 to place the cylindrical battery steel shell;

[0032] Multiple inner support plates 3 are arranged around the column 2. The bottom of the inner support plate 3 is slidably installed on the machine base 1 so that the inner support plate 3 can move radially to support the inner circumferential surface of the cylindrical battery steel shell. At least one driven block 4 is fixed on the inner wall of the inner support plate 3.

[0033] A push block 5 is fixed to the outer wall of the column 2. The push block 5 overlaps the driven block 4, and the mating surface between the push block 5 and the driven block 4 is an interacting inclined surface.

[0034] The drive device 6 is fixed to the bottom wall of the machine base 1, and the output end of the drive device 6 is fixedly installed at the bottom of the column 2;

[0035] A bulging assembly used to bulge the inner circumferential surface of a cylindrical battery steel casing.

[0036] In the process of flaring the cylindrical battery steel shell, the cylindrical battery steel shell is first placed on the inner support plate 3 on the periphery of the column 2. Then, by starting the drive device 6, the output end of the drive device 6 drives the column 2 to descend. At this time, multiple push blocks 5 fixed on the surface of the column 2 move vertically downward and press the corresponding driven block 4 through the inclined plane, so that the inner support plate 3 moves closer to the inner wall of the cylindrical battery steel shell and centers and tightens the inner wall of the cylindrical battery steel shell, avoiding the steel shell positioning deviation, improving the flaring accuracy, and at the same time reducing the problem that radial extrusion when the flaring mold 11 is pressed down can easily cause the shell to become out of round or locally dented.

[0037] In this embodiment, there are at least three inner support plates 3, which are evenly distributed around the column 2. By equidistantly distributing multiple inner support plates 3 along the circumference of the column 2, the stability of the inner wall of the cylindrical battery steel casing is improved when it is centered, tightened, and fixed.

[0038] In this embodiment: when the driving device 6 drives the column 2 to move downward, the inclined surface of the push block 5 presses against the inclined surface of the driven block 4, causing the inner support plate 3 to move radially outward to tighten the inner wall of the steel shell. By setting the inclined surfaces of the adjacent mating surfaces of the driven block 4 and the push block 5, when the column 2 descends, the push block 5 on the column 2 can squeeze the corresponding driven block 4 on the inner wall of the inner support plate 3, reducing the interference caused by the push block 5 squeezing and pushing the driven block 4.

[0039] In this embodiment: the push block 5 is provided with a protruding inclined block 501, and the driven block 4 is provided with an inclined groove 401 that matches the shape of the inclined block 501. The inclined block 501 is embedded in the inclined groove 401 to form a sliding fit.

[0040] When the push block 5 moves vertically, the driven block 4 moves horizontally through the mating surface of the inclined block 501 and the inclined groove 401. When the push block 5 descends, it drives the driven block 4 to move away from the column 2. When the push block 5 rises, it drives the driven block 4 to move closer to the column 2. The push block 5 and the driven block 4 are rigidly transmitted through geometric constraints. Compared with the existing method of moving and resetting through springs, this method can further enhance the movement accuracy and reliability of the driven block 4.

[0041] In this embodiment, the reaming assembly includes a bracket 9, a hydraulic cylinder 10, and a reaming mold 11. The bracket 9 is fixed on the machine base 1, the hydraulic cylinder 10 is mounted on the bracket 9, and the reaming mold 11 is fixed to the output end of the hydraulic cylinder 10 and located directly above the column 2. After the alignment of the cylindrical battery steel casing is completed, the output end of the hydraulic cylinder 10 pushes the reaming mold 11 downward, causing the reaming mold 11 to move closer to the port of the cylindrical battery steel casing to perform the reaming operation.

[0042] In this embodiment, the cylindrical battery steel shell flaring mechanism also includes a positioning component. The positioning component includes multiple outer clamping plates 7 arranged around the column 2, and each outer clamping plate 7 slides through the machine base 1. Its bottom is hinged to the outer wall of the column 2 through a hinge rod 8. When the column 2 moves down, the hinge rod 8 drives the outer clamping plate 7 to move radially inward to clamp the outer wall of the steel shell. In addition, when the drive device 6 drives the column 2 to descend, the hinge rod 8 hinged at the lower end of the column 2 pulls the hinged outer clamping plate 7 to move, so that the outer clamping plate 7 moves closer to the outer wall of the cylindrical battery steel shell. Under the centering and clamping of the cylindrical battery steel shell, by synchronously constraining the inner and outer walls of the steel shell and forcibly keeping them coaxial, the problem of deformation and displacement of the thin-walled shell during flaring can be avoided.

[0043] In this embodiment, both the outer clamping plate 7 and the inner support plate 3 are arc-shaped structures that match the circumference of the cylindrical battery steel shell. The arc-shaped structure of the outer clamping plate 7 and the inner support plate 3 increases the contact area with the cylindrical battery steel shell, thus enhancing the stability of the clamping.

[0044] In this embodiment, the surfaces of the outer clamping plate 7 and the inner support plate 3 that contact the steel shell are provided with an engineering plastic layer. It should be noted that the engineering plastic layer is made of polyamide 66 (PA66) or its reinforcing material, such as PA66 containing 10%-40% glass fiber, which has excellent wear resistance, impact resistance, and dimensional stability. It can withstand the repeated clamping forces and friction forces during the flaring process, extend the service life of the clamping plate, and reduce equipment maintenance downtime.

[0045] In this embodiment: the drive device 6 is provided with a mounting bracket 601 at its bottom, and is fixed to the bottom wall of the machine base 1 by the mounting bracket 601. It should be noted that the drive device 6 can be an electric push rod, a hydraulic cylinder, etc.

[0046] Working principle: In the flared opening of the cylindrical battery steel shell, the cylindrical battery steel shell is first placed on the inner support plate 3 on the periphery of the column 2. Then, by starting the drive device 6, the output end of the drive device 6 drives the column 2 to descend. At this time, multiple push blocks 5 fixed on the surface of the column 2 move vertically downward and squeeze the corresponding driven blocks 4 through the inclined plane, so that the inner support plate 3 moves closer to the inner wall of the cylindrical battery steel shell and centers and clamps the inner wall of the cylindrical battery steel shell. At the same time, as the drive device 6 drives the column 2 to descend, the hinge rod 8 hinged at the lower end of the column 2 pulls the hinged outer clamping plate 7 to move, so that the outer clamping plate 7 moves closer to the outer wall of the cylindrical battery steel shell and centers and clamps the outer side of the cylindrical battery steel shell.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0048] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flaring mechanism for a cylindrical battery steel casing, characterized in that, include: The machine base (1) and the column (2) that slides through the hole in the machine base (1) for placing the cylindrical battery steel shell. Multiple inner support plates (3) are arranged around the column (2). The bottom of the inner support plate (3) is slidably installed on the machine base (1) so that the inner support plate (3) can move radially to support the inner circumferential surface of the cylindrical battery steel shell. At least one driven block (4) is fixed on the inner wall of the inner support plate (3). The outer wall of the column (2) is fixed with a push block (5), the push block (5) overlaps the driven block (4), and the mating surface of the push block (5) and the driven block (4) is an interacting inclined surface; A drive device (6) is fixed to the bottom wall of the machine base (1), and the output end of the drive device (6) is fixedly installed at the bottom of the column (2); A bulging assembly used to bulge the inner circumferential surface of a cylindrical battery steel casing.

2. The cylindrical battery steel shell flaring mechanism according to claim 1, characterized in that, The number of inner support plates (3) is at least three, and the inner support plates (3) are evenly distributed around the column (2) in the circumferential direction.

3. The cylindrical battery steel shell flaring mechanism according to claim 1, characterized in that, When the drive device (6) drives the column (2) to move down, the inclined surface of the push block (5) presses against the inclined surface of the driven block (4), causing the inner support plate (3) to move radially outward to tighten the inner wall of the steel shell.

4. The cylindrical battery steel shell flaring mechanism according to claim 3, characterized in that, The push block (5) is provided with a protruding inclined block (501), and the driven block (4) is provided with an inclined groove (401) that matches the shape of the inclined block (501). The inclined block (501) is embedded in the inclined groove (401) to form a sliding fit.

5. The cylindrical battery steel shell flaring mechanism according to claim 1, characterized in that, The hole-expanding assembly includes a bracket (9), a hydraulic cylinder (10), and a hole-expanding mold (11). The bracket (9) is fixed on the machine base (1), the hydraulic cylinder (10) is installed on the bracket (9), and the hole-expanding mold (11) is fixed at the output end of the hydraulic cylinder (10) and located directly above the column (2).

6. The cylindrical battery steel shell flaring mechanism according to claim 1, characterized in that, The cylindrical battery steel shell flaring mechanism also includes a positioning component, which includes multiple outer clamping plates (7) arranged around the column (2), and each outer clamping plate (7) slides through the machine base (1). Its bottom is hinged to the outer wall of the column (2) through a hinge rod (8). When the column (2) moves down, the outer clamping plate (7) is driven to move radially inward through the hinge rod (8) to clamp the outer wall of the steel shell.

7. The cylindrical battery steel shell flaring mechanism according to claim 6, characterized in that, Both the outer clamping plate (7) and the inner support plate (3) are arc-shaped structures that match the circumference of the cylindrical battery steel shell.

8. The cylindrical battery steel shell flaring mechanism according to claim 7, characterized in that, The outer clamping plate (7) and the inner support plate (3) are provided with an engineering plastic layer on the surface that contacts the steel shell.

9. The cylindrical battery steel shell flaring mechanism according to claim 1, characterized in that, The drive device (6) is provided with a mounting bracket (601) at the bottom, which is fixed to the bottom wall of the machine base (1).

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