An eccentricity adjustment simulation method and simulation device for a lens injection mold core

Abstract

The application relates to the technical field of lens manufacturing, and particularly relates to a lens injection mold core eccentricity adjustment simulation method and a simulation device. The simulation method comprises the following steps: designing an eccentricity adjustment structure of a lens injection mold core; establishing a mathematical model of the eccentricity adjustment structure; establishing a three-dimensional model of the eccentricity adjustment structure according to the mathematical model, and performing model processing on the three-dimensional model; importing the three-dimensional model into simulation software, and performing parameter setting on the three-dimensional model through the simulation software; and performing statics simulation on the three-dimensional model through the simulation software, so as to determine the relationship between pressure and deformation. The eccentricity adjustment simulation method performs statics simulation on the eccentricity adjustment technology of a newly designed lens injection mold, the simulation result meets the adjustment requirement that the eccentricity error of the lens is within 1 mu m, and the feasibility of improving the eccentricity error adjustment precision in the form of stress deformation is verified.

Description

Technical Field

[0001] This invention relates to the field of lens manufacturing technology, specifically to a simulation method and device for eccentric adjustment of lens injection mold cores. Background Technology

[0002] The rapid development of electronic products has led to the widespread use of optical plastic lenses in mobile phone lenses. As people's demands for image quality in imaging systems increase and lens sizes shrink, the requirements for lens precision are also rising. Currently, the industry requires mobile phone lens eccentricity to be within 1μm. However, current injection molds, due to limitations in processing and assembly precision, generally cannot meet the required precision of current mobile phone lenses. Therefore, eccentricity adjustment of mobile phone lens injection molds is necessary.

[0003] Currently, the main method for adjusting the eccentricity of injection molds for mobile phone lenses is by rotating the mold core angle to achieve a better eccentric fit between the mold core and the bushing. However, this method requires removing the mold from the machine and completely disassembling it before the mold core angle can be rotated and adjusted. This not only wastes a lot of time but also carries the technical drawback of potentially damaging the mold core. Furthermore, this eccentricity adjustment method has significant limitations; it cannot achieve overall positional adjustment in the X and Y directions on a flat surface. Therefore, improving the eccentricity adjustment technology of lens injection molds and enhancing the stability of the eccentricity state are urgent problems that the industry needs to solve.

[0004] This paper proposes a method for adjusting the eccentricity of the mold core through stress deformation. For the newly designed lens injection mold eccentricity adjustment technology, it is necessary to verify its feasibility and find the specific dimensions and materials of the appropriate eccentricity adjustment structure. Directly verifying it through physical objects requires a lot of manpower and resources, which is too inefficient. It is necessary to provide a simulation method for the newly designed lens injection mold eccentricity adjustment technology to quickly verify the feasibility of the eccentricity adjustment technology and determine the corresponding structure and adjustment rules. Summary of the Invention

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a simulation method and simulation device for eccentric adjustment of lens injection mold core.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a simulation method for eccentric adjustment of a lens injection mold core, comprising the following steps:

[0007] Step 1: Design an eccentric adjustment structure for the lens injection mold core. The eccentric adjustment structure includes an adjustment block, a first deformation block for generating deformation in the X direction, and a second deformation block for generating deformation in the Y direction. The center of the adjustment block is provided with a mold core hole for placing the lens injection mold core.

[0008] Step 2: Establish a mathematical model of the eccentric adjustment structure. Apply pressure in the X and Y directions to deform the eccentric adjustment structure in the X and Y directions to adjust the position of the lens injection mold core in the X and Y directions.

[0009] Step 3: Establish a three-dimensional model of the eccentric adjustment structure based on the mathematical model, and perform model processing on the three-dimensional model;

[0010] Step 4: Import the 3D model into the simulation software and set the parameters of the 3D model using the simulation software;

[0011] Step 5: Perform static simulation on the three-dimensional model using simulation software to determine the relationship between pressure and deformation. Change the parameters of the three-dimensional model and perform mechanical simulation on the three-dimensional model under different parameters to achieve the adjustment requirement that the lens eccentricity error is within 1μm.

[0012] Furthermore, in step 2, the mathematical model of the eccentric adjustment structure includes: the left side of the adjustment block is connected to the right side of the first deformation block; the left side of the first deformation block is fixed; a leftward pressure is applied to the right side of the adjustment block; the front side of the adjustment block is connected to the rear side of the second deformation block; a forward pressure is applied to the rear side of the adjustment block; and the front side of the second deformation block is fixed.

[0013] Furthermore, in step 2, the displacement of the lens injection mold core in the X direction is equal to the displacement ΔX of the central axis of the mold core hole in the X direction, ΔX = ΔX1 + ΔX2, where ΔX1 is the compression deformation of the first deformation block and ΔX2 is the compression deformation of the adjustment block on the left side of the mold core hole.

[0014] The displacement of the lens injection mold core in the Y direction is equal to the displacement ΔY of the central axis of the mold core hole in the Y direction, ΔY = ΔY1 + ΔY2, where ΔY1 is the compression deformation of the second deformation block and ΔY2 is the compression deformation of the adjustment block on the left side of the mold core hole.

[0015] The total displacement of the central axis of the mold core hole

[0016] Furthermore, in step 3, the 3D model is processed by deleting or adjusting unnecessary features to optimize the 3D model.

[0017] Furthermore, in step 4, the parameter settings include setting the material of the eccentric adjustment structure.

[0018] Furthermore, in step 4, the parameter settings include contact settings for the three-dimensional model, setting each component of the eccentric adjustment structure to frictional contact with a friction coefficient of 0.2 and a normal stiffness coefficient of 0.5, and setting the interface processing to adjust the contact.

[0019] Furthermore, in step 4, the 3D model is meshed to obtain a mesh model. The mesh is refined according to the structural characteristics of the 3D model, with hexahedral mesh as the main type.

[0020] Furthermore, in step 5, the solution conditions for the eccentricity adjustment simulation are set, specifically including:

[0021] Set the magnitude of the pressure in the X and Y directions, with the pressure in the X direction being F1 and the pressure in the Y direction being F2. F1 and F2 are applied to the right and rear sides of the adjustment block, respectively. The deformation of the adjustment block, the first deformation block, and the second deformation block is verified by varying F1 and F2 from 400N to 2000N.

[0022] The front side of the first deformable block and the left side of the second deformable block are fixed respectively;

[0023] Set the vertical Z-direction displacement constraint of the adjustment block to 0, while allowing it to move freely in the X and Y directions.

[0024] Furthermore, in step 5, static simulation is performed on the three-dimensional model to determine the relationship between pressure and deformation in the X direction and the relationship between pressure and deformation in the Y direction. Then, the parameters of the three-dimensional model are changed according to the deformation requirements. While changing the parameters, the structural dimensions of the first deformation block, the first deformation block, and the adjustment block are optimized to achieve the adjustment requirement that the lens eccentricity error is within 1μm.

[0025] Furthermore, in step 5, the simulation results of the 3D model under different parameters are recorded to guide the actual manufacturing process of the eccentric adjustment structure and the eccentric adjustment process of the lens injection mold core.

[0026] The present invention also provides a simulation device for eccentric adjustment of a lens injection mold core, comprising:

[0027] The model building module is used to build a three-dimensional model of the eccentric adjustment structure;

[0028] The model processing module is used to process 3D models.

[0029] The parameter setting module is used to change the parameters of the 3D model;

[0030] The model analysis module is used to obtain simulation results of the 3D model;

[0031] A processor is used to run an eccentricity adjustment simulation program configured to implement the eccentricity adjustment simulation method described above.

[0032] As can be seen from the above description of the present invention, compared with the prior art, the present invention includes at least one of the following beneficial effects:

[0033] 1. The eccentricity adjustment simulation method of the present invention performs static simulation on the eccentricity adjustment technology of the newly designed lens injection mold. The simulation results meet the adjustment requirements of the lens eccentricity error within 1μm, and verify the feasibility of improving the eccentricity error adjustment accuracy by means of force deformation.

[0034] 2. The simulation results obtained by the eccentric adjustment simulation method of the present invention can guide the actual manufacturing of the eccentric adjustment structure, thereby avoiding the problem of a lot of resources being wasted due to repeated experiments in order to select a suitable eccentric adjustment structure. The effective and accurate simulation data is conducive to selecting a more suitable eccentric adjustment structure and provides theoretical rules for subsequent specific eccentric adjustments, so as to better adjust the eccentricity of the mold core.

[0035] 3. The eccentricity adjustment simulation device of the present invention can perform the above-mentioned eccentricity adjustment simulation method well. Attached Figure Description

[0036] Figure 1 This is a flowchart illustrating the steps of a simulation method for adjusting the eccentricity of a lens injection mold core in a preferred embodiment of the present invention.

[0037] Figure 2 This is a mathematical model diagram of the eccentric adjustment structure in a preferred embodiment of the present invention;

[0038] Figure 3 This is a graph showing the pressure and deformation in the X and Y directions in a preferred embodiment of the present invention.

[0039] Figure 4 This is a simulation result diagram of the eccentric adjustment structure in a preferred embodiment of the present invention;

[0040] The numbers in the diagram are explained as follows: 1. Adjustment block; 2. First deformation block; 3. Second deformation block; 11. Mold core hole. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Reference Figure 1 As shown in the preferred embodiment of the present invention, a simulation method for eccentric adjustment of a lens injection mold core includes the following steps:

[0045] Step 1: Design an eccentric adjustment structure for the lens injection mold core. The eccentric adjustment structure includes an adjustment block 1, a first deformation block 2 for generating deformation in the X direction, and a second deformation block 3 for generating deformation in the Y direction. The center of the adjustment block 1 is provided with a mold core hole 11 for placing the lens injection mold core.

[0046] A mold core hole 11 is set at the center of the adjustment block 1 to place the lens injection mold core. The offset of the lens injection mold core is equal to the offset of the central axis of the mold core hole 11. The first deformation block 2 is used to increase the deformation capability of the eccentric adjustment structure in the X direction, and the second deformation block 3 is used to increase the deformation capability of the eccentric adjustment structure in the Y direction.

[0047] Step 2: Establish a mathematical model of the eccentric adjustment structure. Apply pressure in the X and Y directions to deform the eccentric adjustment structure in the X and Y directions to adjust the position of the lens injection mold core in the X and Y directions.

[0048] Step 3: Establish a three-dimensional model of the eccentric adjustment structure based on the mathematical model, and perform model processing on the three-dimensional model;

[0049] Step 4: Import the 3D model into the simulation software and set the parameters of the 3D model through the simulation software; the simulation software can be Ansys simulation software.

[0050] Step 5: Perform static simulation on the three-dimensional model using simulation software to determine the relationship between pressure and deformation. Change the parameters of the three-dimensional model and perform mechanical simulation on the three-dimensional model under different parameters to achieve the adjustment requirement that the lens eccentricity error is within 1μm.

[0051] The eccentricity adjustment simulation method of this invention performs static simulation on the eccentricity adjustment technology of a newly designed lens injection mold. The simulation results meet the adjustment requirement of eccentricity error within 1μm, verifying the feasibility of improving the eccentricity error adjustment accuracy by force deformation. The simulation results obtained by the eccentricity adjustment simulation method of this invention can guide the actual manufacturing of the eccentricity adjustment structure, thereby avoiding the problem of a large amount of resource waste caused by repeated experiments to select a suitable eccentricity adjustment structure. The effective and accurate simulation data is conducive to selecting a more suitable eccentricity adjustment structure and provides theoretical rules for subsequent specific eccentricity adjustments, so as to better adjust the eccentricity of the mold core.

[0052] As a preferred embodiment of the present invention, it may also have the following additional technical features:

[0053] Reference Figure 2 As shown, in this embodiment, in step 2, the mathematical model of the eccentric adjustment structure includes: the left side of the adjustment block 1 is connected to the right side of the first deformation block 2, the left side of the first deformation block 2 is fixed, a leftward pressure is applied to the right side of the adjustment block 1, the front side of the adjustment block 1 is connected to the rear side of the second deformation block 3, a forward pressure is applied to the rear side of the adjustment block 1, and the front side of the second deformation block 3 is fixed.

[0054] Because the newly designed eccentric adjustment structure deforms under stress, the simulation requires a mathematical model to calculate the relationship between stress and deformation. For the X-direction simulation, this is achieved by connecting a first deformation block 2 to the left side of adjustment block 1, fixing the left side of the first deformation block 2, and applying a leftward pressure to the right side of adjustment block 1. For the Y-direction simulation, this is achieved by connecting a second deformation block 3 to the front side of adjustment block 1, fixing the front side of the second deformation block 3, and applying a forward pressure to the rear side of adjustment block 1. Furthermore, to simplify the mathematical model, adjustment block 1 is set as a square, the core hole 11 is a circular hole located at the center of the square, and the first deformation block 2 and the second deformation block 3 are set symmetrically along the diagonal lines of the square.

[0055] In this embodiment, in step 2, the displacement of the lens injection mold core in the X direction is equal to the displacement ΔX of the central axis of the mold core hole 11 in the X direction, ΔX = ΔX1 + ΔX2, where ΔX1 is the compression deformation of the first deformation block 2 and ΔX2 is the compression deformation of the adjustment block 1 on the left side of the mold core hole 11.

[0056] The displacement of the lens injection mold core in the Y direction is equal to the displacement ΔY of the central axis of the mold core hole 11 in the Y direction, ΔY = ΔY1 + ΔY2, where ΔY1 is the compression deformation of the second deformation block 3 and ΔY2 is the compression deformation of the adjustment block 1 on the left side of the mold core hole 11.

[0057] The total displacement of the central axis of the mold hole 11

[0058] The right side of adjusting block 1 is subjected to force F1, corresponding to the displacement ΔX of the central axis of mold core hole 11 in the X direction. ΔX is the total deformation on the left side of the central axis of mold core hole 11, that is, ΔX is equal to the sum of the compression deformation of the first deformation block 2 and the left side of adjusting block 1. The rear side of adjusting block 1 is subjected to force F2, corresponding to the displacement ΔY of the central axis of mold core hole 11 in the Y direction. ΔY is the total deformation on the front side of the central axis of mold core hole 11, that is, ΔY is equal to the sum of the compression deformation of the second deformation block 3 and the front side of adjusting block 1. The total displacement of the lens injection mold core is equal to the total displacement of the central axis of mold core hole 11.

[0059] In this embodiment, step 3 involves model processing of the 3D model, where unnecessary features are deleted or adjusted to optimize the model. Small features are deleted or adjusted, ensuring they do not affect the overall structural performance of the 3D model. For example, chamfers, fillets, and steps do not affect the overall structural strength. Model processing of the 3D model ensures better simulation analysis results and improves computational accuracy and efficiency.

[0060] In this embodiment, step 4, the parameter setting includes setting the material of the eccentric adjustment structure. For an eccentric adjustment structure with pre-defined structural dimensions, the material of the eccentric adjustment structure is what affects its deformation under stress; therefore, the material is set as the primary parameter.

[0061] In this embodiment, step 4, the parameter settings include contact settings for the 3D model. Each component of the eccentric adjustment structure is set to frictional contact. Since friction exists between actual parts, inter-surface friction settings are added to improve simulation accuracy. The friction coefficient is 0.2, the normal stiffness coefficient is 0.5, and the interface processing is adjusted contact. The 3D model is meshed to obtain a mesh model. The mesh is refined according to the structural characteristics of the 3D model, with hexahedral meshes as the primary type. The element size of the contact parts of the components can be set smaller to improve the accuracy of the calculation results and reduce the computational load.

[0062] In this embodiment, step 5 involves setting the solution conditions for the eccentricity adjustment simulation, specifically including:

[0063] The pressure in the X and Y directions is set as follows: the pressure in the X direction is F1, and the pressure in the Y direction is F2. F1 and F2 are applied to the right and rear sides of the adjustment block 1, respectively. The deformation of the adjustment block 1, the first deformation block 2, and the second deformation block 3 is verified by varying F1 and F2 from 400N to 2000N. Figure 3 As shown, F1 changes from 400N to 2000N to obtain the total deformation of adjusting block 1 and the first deformation block 2 in the X direction under this force change, which is the displacement of the lens injection mold core in the X direction; F2 changes from 400N to 2000N to obtain the total deformation of adjusting block 1 and the second deformation block 3 in the Y direction under this force change, which is the displacement of the lens injection mold core in the Y direction. Figure 3 In the simulation, the displacements in the X and Y directions increase in μm, and when the N increases from 400N to 2000N, the deformation in the X and Y directions increases from 0.23μm to 1.1μm. The deformation satisfies the requirement of adjusting the eccentricity error within 1μm. The simulation results show that the deformation caused by force can meet the requirement of adjusting the eccentricity error of the lens within 1μm.

[0064] The front side of the first deformable block 2 and the left side of the second deformable block 3 are fixed respectively; the front side of the first deformable block 2 and the left side of the second deformable block 3 are used as fixed surfaces for positioning.

[0065] The vertical Z-direction displacement constraint of adjustment block 1 is set to 0, while the X and Y directions are free. This is to prevent adjustment block 1 from displacing in the vertical Z-direction after being subjected to force, which would affect the simulation calculation. Therefore, the vertical displacement constraint of adjustment block 1 is set to 0.

[0066] In this embodiment, in step 5, a static simulation is performed on the three-dimensional model to determine the relationship between pressure and deformation in the X-direction and the Y-direction. Then, the parameters of the three-dimensional model are changed according to the deformation requirements. Simultaneously, the structural dimensions of the first deformation block 2, the first deformation block 2, and the adjustment block 1 are optimized to achieve the adjustment requirement of lens eccentricity error within 1 μm. Changes in the structural dimensions and materials of the first deformation block 2, the first deformation block 2, and the adjustment block 1 will affect the simulation results. Within a suitable range, simulation verification is performed on different structural dimensions and different materials to obtain some theoretically optimal eccentricity adjustment structures, all of which can achieve the adjustment requirement of lens eccentricity error within 1 μm. For example... Figure 3As shown, the pressure and deformation curves in the X and Y directions are presented. When F1 and F2 increase from 400N to 2000N, the deformation in the X and Y directions increases from 0.23µm to 1.1µm. Based on the actual measured eccentricity error value, the adjustment of F1 and F2 can be determined according to the curves. The static simulation results are as follows... Figure 4 As shown, the deformation is greatest in the area near the right and rear sides of adjustment block 1, and gradually decreases from right to left and from back to front.

[0067] In this embodiment, step 5 records the simulation results of the 3D model under different parameters to guide the actual manufacturing of the eccentric adjustment structure and the eccentric adjustment process of the lens injection mold core. Different parameters correspond to different simulation results. Some eccentric adjustment structures that better meet the requirements in the simulation results can form certain simulation rules, which can guide the actual manufacturing of the eccentric adjustment structure and the eccentric adjustment process of the lens injection mold core, so as to better adjust the eccentricity of the mold core in subsequent practice. Specifically, combined with the adjustment requirement of the lens eccentricity error within 1μm, the values ​​of F1 and F2 are determined by referring to the curves of F1, F2, and the displacement of the mold core hole 11. Then, the final values ​​of F1 and F2 are determined based on the measured eccentricity error value of the lens molding.

[0068] The present invention also provides a simulation device for eccentric adjustment of a lens injection mold core, comprising:

[0069] The model building module is used to build a three-dimensional model of the eccentric adjustment structure;

[0070] The model processing module is used to process 3D models.

[0071] The parameter setting module is used to change the parameters of the 3D model;

[0072] The model analysis module is used to obtain simulation results of the 3D model;

[0073] A processor is used to run an eccentricity adjustment simulation program configured to implement the eccentricity adjustment simulation method described above.

[0074] The eccentricity adjustment simulation device of the present invention can perform the above-mentioned eccentricity adjustment simulation method well.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A simulation method for eccentric adjustment of a lens injection mold core, characterized in that, Includes the following steps: Step 1: Design an eccentric adjustment structure for the lens injection mold core. The eccentric adjustment structure includes an adjustment block (1), a first deformation block (2) for generating deformation in the X direction, and a second deformation block (3) for generating deformation in the Y direction. The center of the adjustment block (1) is provided with a mold core hole (11) for placing the lens injection mold core. Step 2: Establish a mathematical model of the eccentric adjustment structure. Apply pressure in the X and Y directions to deform the eccentric adjustment structure in the X and Y directions to adjust the position of the lens injection mold core in the X and Y directions. Step 3: Establish a three-dimensional model of the eccentric adjustment structure based on the mathematical model, and perform model processing on the three-dimensional model; Step 4: Import the 3D model into the simulation software and set the parameters of the 3D model using the simulation software; Step 5: Perform static simulation on the three-dimensional model using simulation software to determine the relationship between pressure and deformation. Change the parameters of the three-dimensional model and perform static simulation on the three-dimensional model under different parameters to achieve the adjustment requirement that the lens eccentricity error is within 1μm. In step 2, the mathematical model of the eccentric adjustment structure includes: the left side of the adjustment block (1) is connected to the right side of the first deformation block (2), the left side of the first deformation block (2) is fixed, a leftward pressure is applied to the right side of the adjustment block (1), the front side of the adjustment block (1) is connected to the rear side of the second deformation block (3), a forward pressure is applied to the rear side of the adjustment block (1), and the front side of the second deformation block (3) is fixed; In step 2, the displacement of the lens injection mold core in the X direction is equal to the displacement ΔX of the central axis of the mold core hole (11) in the X direction, ΔX = ΔX1 + ΔX 2， ΔX1 is the compression deformation of the first deformation block (2), and ΔX2 is the compression deformation of the adjustment block (1) on the left side of the mold core hole (11); the displacement of the lens injection mold core in the Y direction is equal to the displacement ΔY of the central axis of the mold core hole (11) in the Y direction, ΔY=ΔY1+ΔY 2， ΔY1 is the compression deformation of the second deformation block (3), and ΔY2 is the compression deformation of the adjustment block (1) on the left side of the mold core hole (11); the total displacement ΔT of the central axis of the mold core hole (11) ; In step 5, the solution conditions for the eccentricity adjustment simulation are set, specifically including: Set the magnitude of the pressure in the X and Y directions. The pressure in the X direction is F1 and the pressure in the Y direction is F2. F1 and F2 are applied to the right and rear sides of the adjustment block (1) respectively. F1 and F2 are both verified by changing from 400N to 2000N to measure the deformation of the adjustment block (1), the first deformation block (2), and the second deformation block (3). The front side of the first deformable block (2) and the left side of the second deformable block (3) are fixed respectively; Set the vertical Z-direction displacement constraint of the adjustment block (1) to 0, and leave the X and Y directions free; In step 5, static simulation is performed on the three-dimensional model to determine the relationship between pressure and deformation in the X direction and the relationship between pressure and deformation in the Y direction. Then, the parameters of the three-dimensional model are changed according to the deformation requirements. While changing the parameters, the structural dimensions of the first deformation block (2), the first deformation block (2), and the adjustment block (1) are optimized to achieve the adjustment requirement that the lens eccentricity error is within 1μm.

2. The simulation method for eccentric adjustment of a lens injection mold core according to claim 1, characterized in that, In step 3, the 3D model is processed by deleting or adjusting unnecessary features to optimize the 3D model.

3. The simulation method for eccentric adjustment of a lens injection mold core according to claim 1, characterized in that, In step 4, the parameter settings include setting the material of the eccentric adjustment structure.

4. The simulation method for eccentric adjustment of a lens injection mold core according to claim 1, characterized in that, In step 4, the parameter settings include setting the contact of the three-dimensional model, setting each component of the eccentric adjustment structure to frictional contact with a friction coefficient of 0.2 and a normal stiffness coefficient of 0.5, and setting the interface processing to adjust the contact.

5. The simulation method for eccentric adjustment of a lens injection mold core according to claim 1, characterized in that, In step 4, the 3D model is meshed to obtain a mesh model. The mesh is then refined based on the structural features of the 3D model, with hexahedral meshes being the primary type.

6. The simulation method for eccentric adjustment of a lens injection mold core according to claim 1, characterized in that, In step 5, the simulation results of the 3D model under different parameters are recorded to guide the actual manufacturing process of the eccentric adjustment structure and the eccentric adjustment process of the lens injection mold core.

7. A simulation device for eccentric adjustment of a lens injection mold core, characterized in that, include: The model building module is used to build a three-dimensional model of the eccentric adjustment structure; The model processing module is used to process 3D models. The parameter setting module is used to change the parameters of the 3D model; The model analysis module is used to obtain simulation results of the 3D model; A processor for running an eccentricity adjustment simulation program configured to implement the eccentricity adjustment simulation method as described in any one of claims 1 to 6.

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