Parameterization simulation method for radian of main roller of roller press

Abstract

The invention discloses a parameterized simulation method for the radian of a main roller of a roller press, and the method comprises the steps: carrying out the modeling of each part structure of the roller press, and building an initialized physical model; carrying out mechanical simulation analysis on the constructed physical model by utilizing engineering simulation software; before solving, carrying out parameterization setting on relevant parameters in the physical model and the simulation model by utilizing the built-in function of software; after solving is completed, deformation displacement data of the working face of the main roller of the roller press in the Y vertical direction are output according to simulation result data; performing curve fitting on the obtained deformation displacement data based on a polynomial fitting method to obtain a radian curve; and according to different actual working conditions, relevant parameters are edited to obtain radian curves under different working conditions. Through simulation analysis parameterization setting, simulation analysis can be carried out on main rollers and pole pieces of different specifications, a reasonable main roller radian curve is given, arc-shaped roller manufacturing is assisted, the working efficiency is improved, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of parametric simulation, and in particular to a parametric simulation method for the radian of a main roller of a roller press. Background Art

[0002] As the core equipment of the rolling process, the roller press is mainly used to roll the pole pieces of the coating process to the thickness specified by the process. In order to increase equipment efficiency, improve production capacity and reduce energy consumption, battery manufacturers have vigorously promoted wide-width pole pieces in recent years, but this has also led to an increase in the length of the main roller of the roller press. In order to increase the energy density of the battery, the linear pressure on the pole piece is also increased accordingly. The deformation arc of the main roller increases during rolling, so the pole piece will be thick in the middle and thin on both sides in the width direction, which is a more serious quality problem. In order to solve this problem, the surface coating of the flat roller can be processed into an arc along the axial direction, that is, an arc roller.

[0003] The shortcoming of the existing technology is that the curvature of the curved roller is currently determined based on experience and then modified after experiments, lacking a theoretical basis. Battery manufacturers have diverse product specifications, and the roller press models of different production lines may also be different. The curvature of the required curved rollers is also different. The main roller coating cost is high, and the disassembly and processing are time-consuming. How to quickly determine the curvature of the main roller to avoid wasting pole pieces or stopping production lines is a very realistic problem. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art. To achieve the above purpose, a parametric simulation method for the curvature of the main roller of a roller press is adopted to solve the problems raised in the above background technology.

[0005] A parametric simulation method for the curvature of a main roller of a roller press comprises the following steps:

[0006] Step S1, modeling the structures of various components of the roller press and establishing an initial physical model;

[0007] Step S2: using engineering simulation software to perform mechanical simulation analysis on the constructed physical model;

[0008] Step S3: Before solving, use the software's built-in functions to parameterize the relevant parameters in the physical model and the simulation model;

[0009] Step S4: after the solution is completed, the deformation displacement data of the main roller working surface Y of the roller press is output according to the simulation result data;

[0010] Step S5, performing curve fitting on the obtained deformation displacement data based on a polynomial fitting method to obtain a radian curve;

[0011] Step S6: edit relevant parameters according to different actual working conditions to obtain radian curves under different working conditions.

[0012] As a further solution of the present invention: the specific steps in step S1 include:

[0013] Modeling is performed based on the structural parameters of each component of the core mechanism in the roller press, wherein the structural parameters include the length, roller diameter, pole piece size, and material of the main roller;

[0014] Based on the obtained structural parameters, a roller press assembly model with preset dimensions is constructed to obtain a physical model, and relevant structural parameters are parameterized.

[0015] Through detailed modeling steps, the accuracy and reliability of the model are ensured, providing a solid foundation for subsequent analysis and simulation.

[0016] As a further solution of the present invention: the specific steps in step S2 include:

[0017] According to the obtained physical model and related information, input the engineering simulation software to build the corresponding simulation model;

[0018] In the engineering simulation software, set the main scene parameters in the roller press production work;

[0019] Then the mesh unit size and thrust in the finite element model are parameterized. After the settings are completed, simulation analysis is performed to obtain simulation result data.

[0020] Through simulation analysis, the performance and possible problems of the roller press can be predicted and evaluated without actually running the equipment, thus saving time and costs.

[0021] As a further solution of the present invention: the specific steps of parameterizing the mesh unit size and thrust in the finite element model are as follows:

[0022] The finite element method is used to solve the finite element model, and the formula is:

[0023] {U}=[k] -1 {F};

[0024] Among them, U is the displacement vector, k is the stiffness, and F is the force.

[0025] The finite element method can be used to more accurately simulate and analyze the mechanical behavior of the roller press, providing strong support for optimizing the design and improving performance.

[0026] As a further solution of the present invention: the specific steps in step S4 include:

[0027] According to the actual position of the working surface of the main roller of the roller press, the deformation data collection area is set on the simulation model;

[0028] When the roller press is working, the upper and lower main rollers squeeze the pole piece tightly, and the Y-direction deformation displacement changes the pole piece thickness, and the Y-direction deformation displacement data of the acquisition area is output in real time. By collecting deformation data in real time, the working status of the roller press can be accurately monitored, possible problems can be discovered and handled in time, and production quality and efficiency can be ensured.

[0029] As a further solution of the present invention: the specific steps in step S5 include:

[0030] The polynomial fitting function in Excel is used to perform fine curve fitting on the obtained deformation displacement data;

[0031] The polynomial fitting function is used to select a polynomial model of appropriate order to approximate the actual data according to the distribution characteristics of the data points, thereby generating a smooth arc curve that is close to the original data trend. Through polynomial fitting processing, a smoother and more realistic data curve can be obtained, providing more accurate information for subsequent analysis and decision-making.

[0032] As a further solution of the present invention: the specific steps in step S6 include:

[0033] For different working conditions, in the parametric editing interface, input the corresponding main roller length and diameter, pole piece width and thickness, hydraulic cylinder thrust, and material parameters to obtain the camber curve under different working conditions. Through the parametric editing interface, the performance of the roller press under different working conditions can be quickly and easily adjusted and analyzed, providing strong support for optimized design and production.

[0034] Compared with the prior art, the present invention has the following technical effects:

[0035] By adopting the above technical solution, the main roller radian curve is calculated by simulating the flat roller model. The simulation model is then parameterized, and there is no need to repeat the simulation modeling. Even non-professionals can obtain the main roller radian curve by inputting the main roller pressure, length, pole piece physical parameters and other data through the parameterized editing window. This application reduces costs and saves time, and through parameterization, main rollers and pole pieces of different specifications can be simulated to obtain the optimal radian curve when processing different main rollers, avoiding repetitive work and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:

[0037] Figure 1 A schematic diagram of the steps of the parameterized simulation method of the embodiment disclosed in the present application;

[0038] Figure 2 This is a schematic structural diagram of a main roller assembly of a roller press according to an embodiment disclosed in the present application;

[0039] Figure 3 A schematic diagram of a simulation grid of a main roller assembly according to an embodiment disclosed in the present application;

[0040] Figure 4 It is a parameterized window interface of the embodiment disclosed in this application;

[0041] Figure 5 A schematic diagram of the deformation displacement data collection area of ​​the main roller working area of ​​the embodiment disclosed in this application;

[0042] Figure 6 A schematic diagram of a stress cloud diagram of a roller press according to an embodiment disclosed in the present application;

[0043] Figure 7 The output data table corresponding to the collection area of ​​the embodiment disclosed in this application;

[0044] Figure 8 This is a schematic diagram of the radian curve obtained after fitting of the embodiment disclosed in this application. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Please refer to Figure 1 In an embodiment of the present invention, a parameterized simulation method for the curvature of a main roller of a roller press comprises the following steps:

[0047] In this embodiment, the upper and lower main rollers in the roller press model are flat rollers. When working, the upper and lower main rollers squeeze the pole piece tightly, so the shape of the pole piece along the width direction is consistent with the shape of the main roller along the axial direction. In actual production, the thickness of the pole piece is achieved by controlling the roller gap between the upper and lower main rollers through the servo hydraulic system, so theoretically, the upper and lower deviations of the pole piece thickness can be controlled by ensuring the straightness of the contact area of ​​the main roller when working.

[0048] Among them, the pole piece material parameters such as elastic modulus are measured experimentally;

[0049] The model mainly includes upper and lower main rollers, bearing seat assemblies at both ends of the upper and lower main rollers, upper bearing seat limit blocks, and a servo hydraulic cylinder that drives the lower bearing seat upward.

[0050] Step S1: Modeling the structures of various components of the roller press to establish an initial physical model. The specific steps include:

[0051] Modeling is performed based on the structural parameters of each component of the core mechanism in the roller press, wherein the structural parameters include the length, roller diameter, pole piece size, and material of the main roller;

[0052] like Figure 2 As shown, the figure is a schematic diagram of the structure of the main roller assembly of the roller press, which is based on the CAD function and constitutes a roller press assembly model with specified dimensions according to the dimensions and matching relationships of the various components;

[0053] Based on the obtained structural parameters, a roller press assembly model with preset dimensions is constructed to obtain a physical model, and relevant structural parameters are parameterized.

[0054] Step S2: using engineering simulation software to perform mechanical simulation analysis on the constructed physical model. The specific steps include:

[0055] like Figure 3 As shown, the figure is a schematic diagram of the simulation grid of the main roller assembly; according to the obtained physical model and relevant information, the engineering simulation software is input to build the corresponding simulation model;

[0056] In the engineering simulation software, set the main scene parameters in the roller press production work;

[0057] Then the grid unit size and thrust are parameterized. After the settings are completed, simulation analysis is performed to obtain simulation result data.

[0058] Specifically, a roller press model is constructed in physical simulation software, and the physical simulation software is CAE software integrated with CAD function, which can perform parameterized settings on relevant physical parameters.

[0059] The specific steps for parameterizing the mesh unit size and thrust in the finite element model are as follows:

[0060] The finite element method is used to solve the finite element model, and the formula is:

[0061] {U}=[k] -1 {F};

[0062] Among them, U is the displacement vector, k is the stiffness, and F is the force.

[0063] After obtaining the physical information of the length, roller diameter and pole piece related dimensions of the main roller of the roller press, the physical model can be constructed through the CAD function, and the physical model and related material information can be input into the CAE software so that the CAE software can construct the corresponding simulation model based on the material and the physical model of the roller press.

[0064] In this embodiment, the main scene parameters in the production work of the roller press are set in the CAE software, including the constraint relationship between the upper and lower bearing seats, the magnitude and direction of the hydraulic cylinder thrust on the lower bearing seat, etc. The grid unit size and thrust are parameterized, and after the setting is completed, simulation analysis is performed to obtain simulation result data.

[0065] like Figure 4 As shown, the figure shows the parameterization window interface of the software;

[0066] Step S3: Before solving, use the software's built-in functions to parameterize the relevant parameters in the physical model and the simulation model;

[0067] Step S4: After the solution is completed, the deformation displacement data of the main roller working surface Y of the roller press is output according to the simulation result data. The specific steps include:

[0068] According to the actual position of the working surface of the main roller of the roller press, the deformation data collection area is set on the simulation model;

[0069] like Figure 5 As shown, the figure is a schematic diagram of the deformation displacement data collection area of ​​the main roller working area;

[0070] When the roller press is working, the upper and lower main rollers squeeze the pole piece tightly, and the Y-direction deformation displacement changes the thickness of the pole piece, and the Y-direction deformation displacement data of the acquisition area is output in real time.

[0071] like Figure 6 As shown, the figure is a schematic diagram of the stress cloud diagram of the roller press;

[0072] In this embodiment, according to the actual position of the main roller working surface, the deformation data collection area (i.e. Figure 5 The highlighted straight line area in the middle). When working, the upper and lower main rollers squeeze the pole piece tightly, so the Y-direction deformation displacement affects the thickness of the pole piece. The Y-direction deformation displacement data of the acquisition area is output as a column of Z, Y two-dimensional coordinate values. The curve fitting is performed on each point to obtain the axial curvature curve of the main roller under this working condition. The curvature curve can be provided to the main roller coating processing manufacturer to make a convex arc roller.

[0073] like Figure 7 As shown, the figure shows the output data table corresponding to the acquisition area;

[0074] like Figure 8 As shown, the figure is a schematic diagram of the radian curve obtained after fitting;

[0075] Step S5, performing curve fitting on the obtained deformation displacement data based on a polynomial fitting method to obtain a radian curve;

[0076] The polynomial fitting function in Excel is used to perform fine curve fitting on the obtained deformation displacement data;

[0077] The polynomial fitting function is used to select a polynomial model of appropriate order to approximate the actual data according to the distribution characteristics of the data points, thereby generating a smooth arc curve that is close to the trend of the original data;

[0078] Step S6: Edit relevant parameters according to different actual working conditions to obtain radian curves under different working conditions. The specific steps include:

[0079] For different working conditions, in the parametric editing interface, input the corresponding main roller length and diameter, pole piece width and thickness, hydraulic cylinder thrust, and material parameters to obtain the camber curve under different working conditions.

[0080] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents, and all should be included within the scope of protection of the present invention.

Claims

1. A parametric simulation method for the curvature of the main roller of a roller press, characterized in that: The following steps are involved: Step S1, modeling the structures of various components of the roller press and establishing an initial physical model; Step S2: using engineering simulation software to perform mechanical simulation analysis on the constructed physical model; Step S3: Before solving, use the software's built-in functions to parameterize the relevant parameters in the physical model and the simulation model; Step S4: after the solution is completed, the deformation displacement data of the main roller working surface Y of the roller press is output according to the simulation result data; Step S5, performing curve fitting on the obtained deformation displacement data based on a polynomial fitting method to obtain a radian curve; Step S6: edit relevant parameters according to different actual working conditions to obtain radian curves under different working conditions.

2. According to claim 1, a parametric simulation method for the curvature of the main roller of a roller press is characterized in that: The specific steps in step S1 include: Modeling is performed based on the structural parameters of each component of the core mechanism in the roller press, wherein the structural parameters include the length, roller diameter, pole piece size, and material of the main roller; Based on the obtained structural parameters, a roller press assembly model with preset dimensions is constructed to obtain a physical model, and relevant structural parameters are parameterized.

3. The parametric simulation method for the curvature of the main roller of a roller press according to claim 1 is characterized in that: The specific steps in step S2 include: According to the obtained physical model and related information, input the engineering simulation software to build the corresponding simulation model; In the engineering simulation software, set the main scene parameters in the roller press production work; Then the mesh unit size and thrust in the finite element model are parameterized. After the settings are completed, simulation analysis is performed to obtain simulation result data.

4. A parametric simulation method for the curvature of the main roller of a roller press according to claim 3, characterized in that: The specific steps of parameterizing the mesh unit size and thrust in the finite element model are as follows: The finite element method is used to solve the finite element model, and the formula is: {U}=[k] -1 {F}; Among them, U is the displacement vector, k is the stiffness, and F is the force.

5. The parametric simulation method for the curvature of the main roller of a roller press according to claim 1 is characterized in that: The specific steps in step S4 include: According to the actual position of the working surface of the main roller of the roller press, the deformation data collection area is set on the simulation model; When the roller press is working, the upper and lower main rollers squeeze the pole piece tightly, and the Y-direction deformation displacement changes the thickness of the pole piece, and the Y-direction deformation displacement data of the acquisition area is output in real time.

6. The parametric simulation method for the curvature of the main roller of a roller press according to claim 1, characterized in that: The specific steps in step S5 include: The polynomial fitting function in Excel is used to perform fine curve fitting on the obtained deformation displacement data; The polynomial fitting function is used to select a polynomial model of appropriate order to approximate the actual data according to the distribution characteristics of the data points, thereby generating a smooth arc curve that is close to the trend of the original data.

7. The parametric simulation method for the curvature of the main roller of a roller press according to claim 1, characterized in that: The specific steps in step S6 include: For different working conditions, in the parametric editing interface, input the corresponding main roller length and diameter, pole piece width and thickness, hydraulic cylinder thrust, and material parameters to obtain the camber curve under different working conditions.

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