Stable rolling line molding mechanism
By designing a stable rolling molding mechanism and utilizing elastic compression elements and synchronous rolling cutters, the problems of uneven rolling depth and position fluctuations in the steel shell were solved, achieving precise positioning and uniform rolling of the battery steel shell, thus improving the stability of the production line and the quality of the battery.
Patent Information
- Application Number
- CN202423152310.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In traditional rolling mill technology, the uneven depth and large fluctuations in position and size of the 360° rolling line of the steel shell lead to poor battery sealing performance and inconsistent dimensions, affecting battery quality and production line stability.
A stable rolling forming mechanism was designed, including a rolling positioning mold, a rolling cutter, a base, an elastic pressing element, a clamp, and a pressure head. The elastic pressing element provides uniform elastic support to ensure the stability of the steel shell during the rolling process, and the design of the synchronous rolling cutter achieves uniform rolling.
It achieves precise positioning and uniform rolling of the steel shell, improves rolling efficiency and quality, ensures the accuracy of the battery steel shell shape and the consistency of the finished product, and reduces the failure rate.
Smart Images
Figure CN223642468U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical equipment technology, specifically a stable rolling mill molding mechanism. Background Technology
[0002] In battery production, the rolling process is a crucial step. Its purpose is to deform the opening of the battery's steel casing inwards using a mold, forming a step to effectively support the sealing body in subsequent processes. However, traditional rolling technology suffers from two main problems: First, the uneven depth of the 360° rolling around the steel casing causes the sealing body to tilt in subsequent processes, affecting the battery's sealing performance. Second, the distance from the rolling line to the opening of the steel casing fluctuates significantly. This not only easily causes fluctuations in the overall battery height but, in severe cases, may even exceed national standard dimensions, affecting the overall quality and consistency of the battery. This is mainly due to the lack of an elastic limiting device at the opening of the steel casing during the rolling process, causing the casing to easily jump up and resulting in dimensional fluctuations. This patent aims to solve these problems by providing a stable rolling molding mechanism to ensure that the dimensions of the battery cells meet national standards and improve the stability and ease of maintenance of the production line. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model relates to a stable rolling mill forming mechanism. This structure is simple and reliable, effectively solving the aforementioned technical problems and is suitable for widespread use. To achieve the above objectives, this utility model is implemented through the following technical solution:
[0004] A stable wire rolling forming mechanism includes a wire rolling positioning mold, wire rolling cutters, a base, an elastic pressing element, a clamp, and a pressure head. The wire rolling positioning mold and the clamp are arranged opposite each other vertically. The base is sleeved on the outside of the wire rolling positioning mold and fixedly installed. The pressure head is attached to the head of the wire rolling positioning mold and is used to press the opening of the battery steel shell. The clamp is used to hold the other end of the battery steel shell. The elastic pressing element is sleeved on the outside of the wire rolling positioning mold and located between the base and the pressure head. Three sets of wire rolling cutters are evenly spaced around the outer circumference of the pressure head.
[0005] Based on the above scheme and as a preferred embodiment of the above scheme: the elastic compression element is a butterfly spring sheet, the butterfly spring sheet is sleeved on the outside of the rolling mill positioning die, and two sets of the butterfly spring sheet are provided.
[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the bottom of the rolling cutter is provided with an annular support part, the outer periphery of the annular support part is provided with an outwardly protruding blade part, the blade part is located below the pressure head, and the blade parts of the three rolling cutters are located on the same horizontal plane.
[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the head of the rolling mill positioning die is adapted to the inner hole of the battery steel shell, the pressure head is provided with a downward protrusion and a limiting groove adapted to the head of the rolling mill positioning die is formed on the inner side, and the protrusion presses against the battery steel shell.
[0008] Based on the above scheme and as a preferred embodiment, the opening of the chuck is provided with a guide surface that contracts from the outside in.
[0009] The outstanding and beneficial technical effects of this invention compared to existing technologies are as follows: the pressure head acts as an intermediate medium to transmit elastic force, ensuring that the steel shell cannot move up and down or rotate freely in the circumferential direction inside the clamp, thus achieving precise positioning of the steel shell. Through the synergistic action of the pressure head and the clamp, the steel shell is firmly fixed, preventing it from moving upwards during the rolling process and ensuring processing stability. The three rolling cutters rotate synchronously around the steel shell and slowly approach each other, achieving a uniform and continuous rolling process, improving rolling efficiency and quality. During the rolling process, the opening of the steel shell is firmly supported by the rolling positioning mold, avoiding deformation caused by uneven pressure, ensuring the accurate shape of the steel shell after rolling. The precise fit gap helps to evenly support the steel shell and prevent uneven deformation during the rolling process. Precise positioning and support, as well as the design of synchronous rolling cutters, jointly promote stable shaping of the rolling process and improve the consistency and reliability of the finished product. Attached Figure Description
[0010] Figure 1 This is a front view schematic diagram of the overall layout structure of the device;
[0011] Figure 2 This is a top-view diagram of the layout of the wire rolling cutter. Detailed Implementation
[0012] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.
[0013] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The directions or positional relationships shown are for the purpose of describing this utility model only, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0014] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.
[0015] To solve the above technical problems, such as Figure 1-2 As shown, this utility model designs a stable rolling molding mechanism, including a rolling positioning mold 1, a rolling cutter 2, a base 3, an elastic pressing element 4, a clamp 5, and a pressure head 6. The rolling positioning mold 1 and the clamp 5 are arranged vertically opposite each other to ensure the precise positioning of the battery steel shell 10 during the rolling process. The base 3 is sleeved on the outside of the rolling positioning mold 1 and fixedly installed. The pressure head 6 is attached to the head of the rolling positioning mold 1 and is used to press the opening of the battery steel shell 10. The clamp 5 is used to clamp the other end of the battery steel shell 10. The elastic pressing element 4 is sleeved on the outside of the rolling positioning mold 1 and located on the base 3. The pressure head 6 is positioned between the base 3 and the pressure head 6, which fits against the head of the rolling mill positioning mold 1. It is specifically designed to press the opening of the battery steel shell 10, ensuring its stability during the rolling process and preventing displacement or deformation. The chuck 5 holds the other end of the battery steel shell 10, further securing it and ensuring its stability throughout the rolling process. An elastic compression element 4 (such as a disc spring) is fitted onto the outside of the rolling mill positioning mold 1, located between the base 3 and the pressure head 6. It provides necessary elastic support, ensuring uniform stress on the steel shell during the rolling process and reducing deformation or damage caused by uneven pressure.
[0016] Three sets of rolling cutters 2 are evenly spaced around the outer circumference of the pressure head 6, ensuring that the steel shell is subjected to uniform force in the 360-degree direction, achieving a uniform rolling effect and avoiding quality problems caused by uneven rolling depth. Through this structural design, the rolling cutters 2 can process the steel shell simultaneously, reducing the time required for each individual rolling cutter 2 to process, improving production efficiency, and making the entire rolling process more stable and controllable, reducing failures caused by improper operation or equipment instability, thereby lowering the failure rate.
[0017] In this embodiment, it is further preferred that the elastic compression element 4 is a butterfly spring sheet, which is sleeved on the outside of the rolling mill positioning mold 1. Two sets of butterfly spring sheets are provided. This design allows the butterfly spring sheets to provide stable and uniform elastic force, supporting the opening of the battery steel shell 10 and preventing displacement or deformation of the steel shell during the rolling process. The use of two sets of butterfly spring sheets enhances the supporting force, ensures uniform distribution of rolling pressure, thereby improving rolling quality and reducing defects caused by uneven pressure.
[0018] In this embodiment, it is further preferred that the bottom of the rolling cutter 2 is provided with an annular support portion, and the outer periphery of the annular support portion is provided with an outwardly protruding blade portion 7. The blade portion 7 is located below the pressure head 6, and the blade portions 7 of the three rolling cutters 2 are located on the same horizontal plane. This structure ensures the stability and consistency of the rolling cutter 2 during the rolling process, making the rolling depth uniform, effectively avoiding product quality problems caused by uneven rolling depth, and improving the accuracy and efficiency of the rolling process.
[0019] In this embodiment, it is further preferred that the head of the rolling mill positioning mold 1 is adapted to the inner hole of the battery steel shell 10, and the pressure head 6 is provided with a downward protrusion 8 and a limiting groove adapted to the head of the rolling mill positioning mold 1 is formed on the inner side. The protrusion 8 presses against the battery steel shell 10. This design allows the pressure head 6 to fit tightly against and press the opening of the battery steel shell 10, providing accurate positioning and stable support, preventing the steel shell from rotating or moving during the rolling process, and ensuring the accuracy and consistency of the rolling position.
[0020] In this embodiment, it is further preferred that the opening of the clamp 5 is provided with a guide surface 9 that contracts from the outside to the inside. This design allows the other end of the battery steel shell 10 to smoothly enter the clamp 5 and be firmly clamped. The structure of the guide surface 9 helps to guide and position the steel shell, reduce errors during operation, and improve the accuracy and reliability of clamping.
[0021] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made by those skilled in the art based on the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A stable rolling mill forming mechanism, characterized in that: The device includes a rolling mill positioning die, rolling mill cutters, a base, an elastic pressing element, a chuck, and a pressure head. The rolling mill positioning die and the chuck are arranged opposite each other vertically. The base is sleeved on the outside of the rolling mill positioning die and fixedly installed. The pressure head is attached to the head of the rolling mill positioning die and is used to press the opening of the battery steel shell. The chuck is used to hold the other end of the battery steel shell. The elastic pressing element is sleeved on the outside of the rolling mill positioning die and located between the base and the pressure head. Three sets of rolling mill cutters are evenly spaced around the outer circumference of the pressure head.
2. The stable rolling mill forming mechanism according to claim 1, characterized in that: The elastic compression element is a butterfly spring sheet, which is sleeved on the outside of the rolling mill positioning die, and there are two sets of butterfly spring sheets.
3. The stable rolling mill forming mechanism according to claim 2, characterized in that: The bottom of the rolling cutter is provided with an annular support part, and the outer periphery of the annular support part is provided with an outwardly protruding blade part. The blade part is located below the pressure head, and the blade parts of the three rolling cutters are located on the same horizontal plane.
4. A stable rolling mill forming mechanism according to claim 3, characterized in that: The head of the rolling mill positioning die is adapted to the inner hole of the battery steel shell. The pressure head has a downward protrusion and a limiting groove that is adapted to the head of the rolling mill positioning die on its inner side. The protrusion presses against the battery steel shell.
5. A stable rolling mill forming mechanism according to claim 4, characterized in that: The opening of the chuck is provided with a guide surface that contracts from the outside in.