A lithium battery negative pole post punching and rolling mold device for an oil press

Abstract

The utility model discloses a lithium battery negative pole post punch forging and rolling edge mould device for oil press, and relates to the technical field of machine tool processing, the utility model discloses, including: support frame, the inner wall fixedly connected with fixed device of support frame, the outer wall rotationally connected with rolling edge device of fixed device, the rolling edge device utilizes fixed device and carries out rolling edge to processing object, through setting the cooperation of rolling edge device and fixed device, utilize the precision of gear drive, ensure the stability and consistency of semicircle cylinder rotating speed in the rolling edge process, and multiple semicircle cylinders are arranged along the passive gear ring center axis circle circumference array, can carry out all -round, even rolling edge processing to negative pole post, and the spring elasticity of presser plate can exert stable pressure to processing object, makes it and the compactly attached of forming block, ensures the fixed position of negative pole post in the rolling edge process, and will not appear displacement or shaking, provides reliable guarantee's purpose for high accuracy processing.

Description

Technical Field

[0001] This utility model relates to the field of machine tool processing technology, specifically to a die device for forging and rolling the negative electrode post of a lithium battery for a hydraulic press. Background Technology

[0002] In the lithium battery manufacturing process, the negative electrode post, as a key component connecting the battery to the external circuit, plays a decisive role in the battery's conductivity, mechanical strength, and sealing performance due to its processing quality.

[0003] Traditional lithium battery negative electrode post processing often employs a single stamping or rolling process, which has significant limitations. Single stamping is difficult to achieve complex structure forming and cannot meet the high-precision structural requirements of negative electrode post top steps, edge flanging, etc. This leads to poor soldering and high contact resistance when the electrode post is connected to the tab. Existing processes mostly adopt multi-step processing, and the transfer between processes is prone to error accumulation. In addition, the equipment occupies a large space and has low production efficiency, making it difficult to meet the requirements of large-scale, high-precision lithium battery production. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a lithium battery negative electrode post forging and rolling die device for hydraulic presses, which solves the problems of poor forming, low pass rate, large multi-process error and insufficient flexibility in traditional single stamping and rolling processes.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery negative electrode post forging and rolling die device for a hydraulic press, comprising: a support frame, a fixing device fixedly connected to the inner wall of the support frame, and a rolling device rotatably connected to the outer wall of the fixing device. The rolling device uses the fixing device to roll the workpiece. The rolling device includes a micro motor, the output end of which is rotatably connected to a drive gear via a rotating rod. A driven gear ring meshes with the outer wall of the drive gear. The micro motor drives the drive gear to rotate, and through meshing with the driven gear ring, drives the cross and semi-circular roller to perform circumferential motion, thereby realizing the rolling operation of the lithium battery negative electrode post.

[0008] Preferably, the outer wall of the micro motor is fixedly connected to the outer wall of the fixing device, and the outer wall of the rotating rod is fixedly connected to the inner wall of the driving gear.

[0009] Preferably, a cross is fixedly connected to the bottom end of the passive gear ring, and a semi-circular roller is rotatably connected to the bottom end of the cross via a connecting rod. The outer wall of the connecting rod is rotatably connected to the inner wall of the semi-circular roller. The outer wall of the semi-circular roller is arranged in a circumferential array along the central axis of the passive gear ring. Multiple sets of semi-circular rollers are arranged in a circumferential array along the central axis of the passive gear ring, which can perform all-round and uniform edge rolling treatment on the negative electrode post, further improving processing efficiency and shortening the processing time of a single negative electrode post.

[0010] Preferably, the fixing device includes a cylinder, with a slide rod slidably connected to the inner wall of the cylinder, and the outer wall of the slide rod arranged in a circumferential array along the central axis of the cylinder. A pressing plate is fixedly connected to the bottom end of the slide rod, and a compression spring is fixedly connected to the end of the slide rod away from the pressing plate. The end of the pressing plate away from the slide rod contacts a forming block through the workpiece. With the help of the elasticity of the spring, the pressing plate can apply stable pressure to the workpiece, making it fit tightly against the forming block, ensuring that the position of the negative terminal is fixed during the rolling process, without displacement or shaking, thus providing a reliable guarantee for high-precision processing.

[0011] Preferably, the outer wall of the cylinder is slidably connected to the inner wall of the support frame, and the end of the compression spring away from the slide rod is fixedly connected to the inner wall of the cylinder.

[0012] Preferably, the inner wall of the cross is rotatably connected to the outer wall of the cylinder through a slot, and the slot is opened in the cylinder wall. The cross is rotatably connected to the cylinder through the slot, which makes the overall structure compact, occupies little space, and is easy to install and debug on the hydraulic press. Beneficial effects

[0013] This utility model provides a die device for forging and rolling the negative electrode post of a lithium battery in a hydraulic press. It has the following advantages: This utility model, through the combination of a rolling edge device and a fixing device, utilizes the precision of gear transmission to ensure the stability and consistency of the rotational speed of the semi-circular rollers during the rolling edge process. Multiple sets of semi-circular rollers are arranged in a circumferential array along the central axis of the passive gear ring, which can perform all-round and uniform rolling edge treatment on the negative electrode post. The pressing plate, with the help of the elasticity of the spring, can apply stable pressure to the workpiece, making it fit tightly against the forming block, ensuring that the position of the negative electrode post is fixed during the rolling edge process, without displacement or shaking, providing a reliable guarantee for high-precision processing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the hemming device of this utility model; Figure 3 This is a schematic diagram of the fixing device of this utility model.

[0015] In the diagram: 1. Support frame; 2. Rolling device; 20. Micro motor; 21. Drive gear; 22. Driven gear ring; 23. Cross; 24. Semi-circular roller; 25. Slot; 3. Fixing device; 30. Cylinder; 31. Slide rod; 32. Pressing plate; 33. Compression spring; 34. Forming block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example

[0018] Please see Figure 1-3 This utility model provides a technical solution: a forging and rolling die device for lithium battery negative electrode posts used in hydraulic presses, comprising: The support frame 1 has a fixing device 3 fixedly connected to its inner wall, and a rolling device 2 rotatably connected to the outer wall of the fixing device 3. The rolling device 2 rolls the edge of the workpiece using the fixing device 3. The rolling device 2 rotates and rolls the edge by moving the fixing device 3 down the inner wall of the support frame 1 and fixing the workpiece. The hemming device 2 includes a micro motor 20. The output end of the micro motor 20 is rotatably connected to a drive gear 21 via a rotating rod. A driven gear ring 22 meshes with the outer wall of the drive gear 21. The outer wall of the micro motor 20 is fixedly connected to the outer wall of the fixing device 3. The outer wall of the rotating rod is fixedly connected to the inner wall of the drive gear 21. While the fixing device 3 is working, the micro motor 20 in the hemming device 2 starts synchronously and drives the drive gear 21 to rotate via the rotating rod. The drive gear 21 meshes with the driven gear ring 22 and drives the driven gear ring 22 to make a circular motion. The driven gear ring drives the cross 23 to rotate synchronously. A cross 23 is fixedly connected to the bottom end of the passive gear ring 22. A semi-circular roller 24 is rotatably connected to the bottom end of the cross 23 via a connecting rod. The outer wall of the connecting rod is rotatably connected to the inner wall of the semi-circular roller 24. The outer wall of the semi-circular roller 24 is arranged in a circumferential array along the central axis of the passive gear ring 22. The connecting rod at the bottom end of the cross 23 and the semi-circular roller 24 move in a circular motion around the edge of the negative electrode post to roll and form the edge of the blank. Multiple semi-circular rollers 24 are distributed in a circumferential array. During the rotation, they continuously and uniformly roll the edge of the negative electrode post to ensure the consistency of the edge forming quality.

[0019] The fixing device 3 includes a cylinder 30, with a slide rod 31 slidably connected to the inner wall of the cylinder 30. The outer wall of the slide rod 31 is arranged in a circumferential array along the central axis of the cylinder 30. A pressing plate 32 is fixedly connected to the bottom end of the slide rod 31. A compression spring 33 is fixedly connected to the end of the slide rod 31 away from the pressing plate 32. The end of the pressing plate 32 away from the slide rod 31 contacts a forming block 34 through the workpiece. The outer wall of the cylinder 30 is slidably connected to the inner wall of the support frame 1. The compression spring 33 is located at the outer wall of the cylinder 30 away from the inner wall of the support frame 1. One end of the slide bar 31 is fixedly connected to the inner wall of the cylinder 30. When the cylinder 30 is activated, it pushes the slide bar 31 to slide downward along the inner wall of the cylinder 30, which drives the pressing plate 32 to press down, tightly pressing the negative electrode blank onto the forming block 34. The compression spring 33 provides buffering force during the movement of the slide bar 31 to avoid excessive pressure causing deformation or damage to the blank. For blanks of different thicknesses or hardness, the compression spring 33 can automatically adjust the pressure through elastic deformation to ensure the stability of the fixing effect.

[0020] The inner wall of the cross 23 is rotatably connected to the outer wall of the cylinder 30 through the slot 25, and the slot 25 is opened in the wall of the cylinder 30. The cross 23 is rotatably connected to the outer wall of the cylinder 30 through the slot 25 to ensure the stability of the rolling device 2 during operation, while allowing it to rotate freely relative to the fixing device 3. During the rolling process, the fixing device 3 continuously applies stable pressure to ensure the fit between the negative electrode post and the forming block 34 and prevent displacement or deformation during processing.

[0021] In use, the fixing device 3 on the inner wall of the support frame 1 moves down and the workpiece is fixed, and the rolling device 2 is used to rotate and roll the edge. First, the lithium battery negative electrode blank to be processed is placed on top of the forming block 34, so that it is within the working range of the rolling device 2 and the fixing device 3. The cylinder 30 is activated, pushing the slide bar 31 to slide down along the inner wall of the cylinder 30, which drives the pressing plate 32 to press down, tightly pressing the negative electrode blank onto the forming block 34. The compression spring 33 provides buffering force during the movement of the slide bar 31 to avoid excessive pressure causing deformation or damage to the blank. For blanks of different thicknesses or hardness, the compression spring 33 can automatically adjust the pressure through elastic deformation to ensure the stability of the fixing effect.

[0022] While the fixing device 3 is operating, the micro motor 20 in the rolling device 2 starts synchronously, driving the drive gear 21 to rotate through the rotating rod. The drive gear 21 meshes with the driven gear ring 22, driving the driven gear ring 22 to make a circular motion. The drive gear ring drives the cross 23 to rotate synchronously. The connecting rod at the bottom of the cross 23 and the semi-circular roller 24 make a circular motion around the edge of the negative pole post, rolling and forming the edge of the blank. Multiple semi-circular rollers 24 are distributed in a circumferential array, continuously and uniformly rolling the edge of the negative pole post during the rotation process to ensure the consistency of the edge forming quality.

[0023] The cross 23 is rotatably connected to the outer wall of the cylinder 30 through the slot 25, ensuring the stability of the rolling device 2 during operation, while allowing it to rotate freely relative to the fixing device 3. During the rolling process, the fixing device 3 continuously applies stable pressure to ensure the fit between the negative electrode post and the forming block 34, preventing displacement or deformation during processing.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die device for forging and rolling lithium battery negative electrode posts for hydraulic presses, comprising: The support frame (1) is characterized by: The inner wall of the support frame (1) is fixedly connected to a fixing device (3), and the outer wall of the fixing device (3) is rotatably connected to a rolling device (2). The rolling device (2) uses the fixing device (3) to roll the edge of the workpiece. The hemming device (2) includes a micro motor (20), the output end of which is rotatably connected to a drive gear (21) via a rotating rod, and a passive gear ring (22) meshes with the outer wall of the drive gear (21).

2. The lithium battery negative electrode post stamping and rolling die device for a hydraulic press according to claim 1, characterized in that: The outer wall of the micro motor (20) is fixedly connected to the outer wall of the fixing device (3), and the outer wall of the rotating rod is fixedly connected to the inner wall of the drive gear (21).

3. The lithium battery negative electrode post stamping and rolling die device for a hydraulic press according to claim 1, characterized in that: The bottom end of the passive gear ring (22) is fixedly connected to a cross (23), and the bottom end of the cross (23) is rotatably connected to a semi-circular roller (24) through a connecting rod. The outer wall of the connecting rod is rotatably connected to the inner wall of the semi-circular roller (24), and the outer wall of the semi-circular roller (24) is arranged in a circular array along the central axis of the passive gear ring (22).

4. The lithium battery negative electrode post stamping and rolling die device for a hydraulic press according to claim 1, characterized in that: The fixing device (3) includes a cylinder (30), a slide rod (31) is slidably connected to the inner wall of the cylinder (30), and the outer wall of the slide rod (31) is arranged in a circumferential array along the central axis of the cylinder (30). A pressing plate (32) is fixedly connected to the bottom end of the slide rod (31), and a compression spring (33) is fixedly connected to the end of the slide rod (31) away from the pressing plate (32). The end of the pressing plate (32) away from the slide rod (31) contacts a forming block (34) through the workpiece.

5. The lithium battery negative electrode post forging and rolling die device for a hydraulic press according to claim 4, characterized in that: The outer wall of the cylinder (30) is slidably connected to the inner wall of the support frame (1), and the end of the compression spring (33) away from the slide rod (31) is fixedly connected to the inner wall of the cylinder (30).

6. The lithium battery negative electrode post stamping and rolling die device for a hydraulic press according to claim 3, characterized in that: The inner wall of the cross (23) is rotatably connected to the outer wall of the cylinder (30) through a slot (25), and the slot (25) is opened in the wall of the cylinder (30).

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