Double-layer glue and three-layer film method for manufacturing diamond paster

Abstract

The invention relates to the technical field of lamination processes, in particular to a double-layer glue and three-layer film method for manufacturing a diamond sticker, which comprises the following steps of: setting the total thickness of a film layer based on a top PET film, a glue layer and a substrate PET film, distributing the total thickness to the boundary of the film surface and the glue layer, adjusting the thickness of the PET film, loading the interface thickness control variable of the glue layer, and adjusting the thickness of the glue layer. And generating initial parameters of the film layer structure. According to the method, the lamination loads of different areas of the film layer are decomposed through a finite element analysis algorithm, the loads of multiple areas are uniformly distributed on the surface of the film, the problem of local pressure bearing unbalance easily occurring in a traditional lamination process is avoided, and the thickness of the film layer and the thickness of the adhesive layer are reasonably distributed in the design stage; different functional layers can effectively bear stress in the pressing process, the stress concentration phenomenon between layers is reduced, the pressure is adjusted point by point through multivariate analysis, the overall stress distribution is optimized, and the uniformity and stability of the film layer under the pressure are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of lamination technology, and in particular to a double-layer glue and three-layer film method for making diamond stickers. Background Art

[0002] The field of lamination technology aims to combine thin layers of different functions, characteristics or materials through bonding, hot pressing, etc. to form a multi-layer composite structure with comprehensive performance, improve the strength, durability, wear resistance and waterproofness of the material, and also achieve the superposition of decorative effects and special functions.

[0003] The double-layer glue and three-layer film method used to make diamond stickers achieves the purpose of realizing a high-brightness diamond effect in stickers by laminating two layers of adhesives with different functions and three layers of films with different characteristics together, visually presenting a diamond-like texture while ensuring that the stickers have good adhesion and a long service life on different material surfaces.

[0004] The existing lamination process often faces the problem of structural imbalance caused by stress concentration when dealing with the combination of different films and adhesive layers. The traditional process has poor flexibility in temperature control and cannot accurately match the thermal expansion characteristics of each area during the bonding process of multi-layer films. It is easy for the adhesive layer to lose its stable adhesion due to uneven temperature, affecting the reliability of the bonding, resulting in an unstable production process and large fluctuations in the quality of the finished product. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a double-layer glue and three-layer film method for making diamond stickers.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme: a double-layer glue and three-layer film method for making diamond stickers, comprising the following steps:

[0007] Step 1: Based on the top PET film, glue layer, and base PET film, set the film thickness, distribute the thickness value to the boundary between the film surface and the glue layer, adjust the PET film thickness according to the glue layer adhesion requirements, load the glue layer interface thickness control variable, initially distribute the thickness to various parts of the film surface, and generate the initial parameters of the film structure;

[0008] Step 2: Based on the initial parameters of the membrane structure, simulate the lamination state of the adhesive layer and the base layer, apply pressure to different areas of the membrane surface layer by layer to achieve load sharing, and calculate the position and pressure value of the pressure-bearing point on the surface of the film, transfer the adhesive layer load evenly to each area, dynamically balance the surface force, and obtain the membrane pressure load distribution value;

[0009] Step 3: Based on the film layer pressure load distribution value, the pressure bearing condition of the film layer is detected for each stress distribution point in the pressure concentration area, the concentrated stress points in each area are located on the film layer surface, the pressure of the adhesive layer is adjusted point by point and layer by layer, and the pressure concentration area is reduced, and the uniform pressure is distributed to the entire surface of the adhesive layer to generate a stress distribution adjustment value;

[0010] Step 4: Based on the stress distribution adjustment value, the pressure data of the thickness change is adjusted to the thickness distribution surface of the adhesive layer and the base layer, the temperature control points in different areas are matched, the temperature range is loaded to each pressing point one by one, the thickness distribution under temperature and pressure is balanced layer by layer, and the thickness and temperature optimization values ​​are generated;

[0011] Step 5: Based on the thickness and temperature optimization values, correct the temperature control area where the film thickness changes in real time, synchronize the adhesive layer thickness and base layer consistency parameters to each lamination area, calibrate the thickness deviation points of each area to the entire surface of the film layer, and establish the film consistency control value.

[0012] As a further solution of the present invention, the specific steps of generating the initial parameters of the film layer structure are:

[0013] Based on the top PET film, glue layer and base PET film structure, the film thickness is set, the thickness value is assigned to the boundary between the film surface and the glue layer, the PET film thickness is adjusted according to the glue layer adhesion requirements, the glue layer interface thickness control variable is loaded, and the value is distributed to each area of ​​the film surface through the initial thickness distribution to generate the initial film thickness distribution parameters;

[0014] Based on the initial thickness distribution parameters of the film layer, the film layer surface thickness distribution is balanced and adjusted. According to the thickness requirements and load requirements, the initial thickness distribution parameters are refined for each region, and the thickness adaptation value and adhesion thickness distribution of each region are adjusted to obtain the thickness balance adjustment parameters.

[0015] Based on the thickness balance adjustment parameters, the thickness distribution values ​​and adhesion positions of the PET film, adhesive layer and base layer of the film structure are determined, the thickness distribution of each layer is confirmed and the initial structure thickness value is generated to obtain the initial parameters of the film structure;

[0016] The initial parameters of the membrane layer structure include the thickness of the top layer, the thickness of the glue layer and the thickness of the base layer.

[0017] As a further solution of the present invention, the specific steps of generating the membrane layer pressure load distribution value are:

[0018] Based on the initial parameters of the membrane structure, by simulating the lamination state of the adhesive layer and the base layer, specific pressure values ​​are applied layer by layer to different areas of the membrane surface, so that the pressure is transmitted to the surface areas of various parts of the membrane structure, and the pressure transmission state parameters of the adhesive layer are obtained;

[0019] Based on the pressure transmission state parameters of the adhesive layer, the finite element analysis algorithm is used to gradually calculate the position and pressure value of the pressure points on the surface of the membrane layer, and the loads of various parts of the membrane surface are balanced by regional distribution of the adhesive layer load to obtain the surface pressure distribution parameters;

[0020] Based on the surface pressure distribution parameters, the dynamic balance of the pressure load on the membrane surface and the base layer is adjusted, the pressure value of each surface area is regulated, the load is transferred to each pressure-bearing area, and the membrane pressure load distribution value is obtained;

[0021] The membrane layer pressure load distribution value includes a pressure application area, a load balancing point and a pressure distribution range.

[0022] As a further solution of the present invention, the finite element analysis algorithm is according to the formula:

[0023]

[0024] Where: σ is the stress at the pressure point on the membrane surface, F is the total pressure applied to the membrane, A is the force-bearing area of ​​the membrane, and F i is the distributed load at each pressure point, d i is the pressure transmission distance of the adhesive layer, E is the elastic modulus of the adhesive layer material, β i is the loading correction coefficient for each area on the membrane surface, k is the friction correction coefficient between the membrane surface and the adhesive layer, and n is the number of pressure points.

[0025] As a further solution of the present invention, the specific steps of generating the membrane layer pressure load distribution value include:

[0026] When obtaining the pressure transmission state parameters of the adhesive layer, the pressure distribution in the membrane structure is evaluated by simulating the pressing state of the adhesive layer and the base layer, and an initial force model is established on the contact surface between the adhesive layer and the base layer, and the pressure transmission at different locations is measured at the same time;

[0027] Dynamic balance adjustment of the pressure loads of the membrane layer and the base layer. After obtaining the surface pressure distribution parameters, the pressure distribution standard of the base layer is set, and the pressure in the local area of ​​the membrane surface is gradually adjusted. At the same time, it is compared and adjusted with the pressure load of the base layer until a balance state is reached.

[0028] As a further solution of the present invention, the specific steps of generating the stress distribution adjustment value are:

[0029] Based on the pressure load distribution value of the membrane layer, a multivariate analysis method is used to locate each stress point in the pressure concentration area one by one, and the stress distribution points are determined on the surface of the membrane layer. By refining the position distribution of each stress point, the specific position of each point in the pressure concentration area is marked to generate the stress distribution points in the pressure concentration area;

[0030] Based on the stress distribution points in the pressure concentration area, the pressure values ​​of each adhesive layer are adjusted point by point and layer by layer, and the concentrated pressure values ​​are dispersed layer by layer by adjusting the pressure of each stress point, and the pressure is evenly distributed in the adhesive layer by reducing the pressure difference to obtain a uniform pressure distribution value of the adhesive layer;

[0031] Based on the uniform pressure distribution value of the adhesive layer, the pressure value is redistributed point by point on the surface of the adhesive layer, and the pressure is evenly distributed on the entire surface according to the position balance to obtain a stress distribution adjustment value;

[0032] The stress distribution adjustment value includes a stress concentration area, a distribution balance point and a pressure transfer position.

[0033] As a further embodiment of the present invention, the multivariate analysis method is according to the formula:

[0034]

[0035] Among them: σ′ is the improved stress value, F is the force applied to the surface of the film layer, A is the surface area of ​​the force, θ is the angle between the force direction and the normal of the film layer, φ is the inclination angle of the film surface position where the stress point is located, which is used to reflect the local geometric characteristics of the surface, k1 is the influence coefficient of the force application direction, and k2 is the influence coefficient of the material thickness.

[0036] As a further solution of the present invention, the specific steps of generating the stress distribution adjustment value include:

[0037] Based on the pressure load distribution value of the membrane layer, the pressure concentration area is located, and the pressure load distribution values ​​are scanned and analyzed one by one. The area with abnormally concentrated pressure is determined as the stress concentration area, and the specific layout of the stress distribution is obtained by marking the positions of each stress point in the area one by one. After obtaining the stress distribution points in the pressure concentration area, the concentrated pressure is dispersed layer by layer by reducing the pressure difference point by point, and a uniform stress state is formed by dispersing the pressure difference;

[0038] After obtaining a uniform pressure on the adhesive layer, the pressure is further redistributed point by point on the adhesive layer surface based on the uniform pressure distribution value, so that the pressure on the adhesive layer surface is evenly diffused to the entire surface area.

[0039] As a further solution of the present invention, the specific steps of generating the thickness and temperature optimization values ​​are:

[0040] Based on the stress distribution adjustment value, the pressure data of each adhesive layer and the base layer are converted into a thickness change value, the thickness data is mapped to the pressure distribution surface, and the pressure data is unified by adjusting the thickness change value to generate thickness change pressure data;

[0041] Based on the thickness change pressure data, the temperature control points are matched according to different regions of the adhesive layer, the temperature control points of each region are loaded to the pressing point, and the temperature control values ​​are set in sequence according to the pressing point region to obtain the regional temperature matching value;

[0042] Based on the regional temperature matching value, the temperature and pressure are balanced layer by layer in different regions by pressing the joint point, and the thickness change of each region is controlled and distributed to the adhesive layer and the base layer to generate the thickness and temperature optimization value;

[0043] The thickness and temperature optimization values ​​include the adjusted glue layer thickness, base layer temperature and thickness distribution equilibrium point.

[0044] As a further solution of the present invention, the specific steps of generating the film consistency control value are:

[0045] Based on the thickness and temperature optimization values, the thickness change of each area of ​​the film layer is measured in real time, the temperature value in the temperature control area is adjusted, the thickness change value is corrected, the temperature level of each temperature control area is refined one by one, the film thickness change parameter is unified, and the film temperature control parameter is obtained;

[0046] Based on the film layer temperature control parameters, the thickness consistency data of each adhesive layer and the base layer are synchronized to the lamination area, the synchronized data are extracted by area, the thickness values ​​are matched point by point, and the thickness of the adhesive layer and the base layer are kept consistent by position adjustment to obtain the film layer thickness consistency parameters;

[0047] Based on the film thickness consistency parameter, the deviation thickness points are located in each area on the film surface, and the thickness of each deviation point is calibrated to a set range, and the thickness is redistributed to ensure consistency over the entire surface, thereby establishing a film consistency control value;

[0048] The film consistency control value includes a thickness calibration point, a temperature adjustment interval and a consistency parameter set.

[0049] Compared with the prior art, the advantages and positive effects of the present invention are:

[0050] 1. In the present invention, the lamination loads of different regions of the film layer are decomposed by the finite element analysis algorithm, and the loads of multiple regions are evenly distributed on the film surface, thereby avoiding the problem of local pressure imbalance that is prone to occur in the traditional lamination process. In the design stage, the thickness of the film layer and the adhesive layer is reasonably allocated to ensure that different functional layers can effectively bear stress during the lamination process, thereby reducing the stress concentration phenomenon between layers;

[0051] 2. In the present invention, the pressure is adjusted point by point through multivariate analysis to optimize the overall stress distribution, ensure the uniformity and stability of the film layer under pressure, and combine the correlation adjustment strategy of temperature and thickness to make the temperature distribution and thickness change of the adhesive layer and the base layer remain consistent during lamination, thereby avoiding the imbalance of material properties in different regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the main steps of the present invention. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] Embodiment 1

[0055] See also Figure 1 The present invention provides a technical solution: a double-layer glue and three-layer film method for making diamond stickers, comprising the following steps:

[0056] Step 1: Based on the top PET film, glue layer, and base PET film, set the film thickness, distribute the thickness value to the boundary between the film surface and the glue layer, adjust the PET film thickness according to the glue layer adhesion requirements, load the glue layer interface thickness control variable, initially distribute the thickness to various parts of the film surface, and generate the initial parameters of the film structure;

[0057] Step 2: Based on the initial parameters of the membrane structure, simulate the lamination state of the adhesive layer and the base layer, apply pressure to different areas of the membrane surface layer by layer to achieve load sharing, and calculate the position and pressure value of the pressure-bearing point on the surface of the film, transfer the adhesive layer load evenly to each area, dynamically balance the surface force, and obtain the membrane pressure load distribution value;

[0058] Step 3: Based on the pressure load distribution value of the film layer, the pressure bearing condition of the film layer is detected for each stress distribution point in the pressure concentration area, and the concentrated stress points in each area are located on the surface of the film layer. The pressure of the adhesive layer is adjusted point by point and layer by layer to reduce the pressure concentration area, and the uniform pressure is distributed to the entire surface of the adhesive layer to generate a stress distribution adjustment value;

[0059] Step 4: Based on the stress distribution adjustment value, adjust the pressure data of the thickness change to the thickness distribution surface of the adhesive layer and the base layer, match the temperature control points in different areas, load the temperature range to each pressing point one by one, balance the thickness distribution under temperature and pressure layer by layer, and generate the thickness and temperature optimization value;

[0060] Step 5: Based on the thickness and temperature optimization values, correct the temperature control area where the film thickness changes in real time, synchronize the glue layer thickness and base layer consistency parameters to each lamination area, calibrate the thickness deviation points of each area to the entire surface of the film layer, and establish the film consistency control value.

[0061] The specific steps to generate the initial parameters of the membrane structure are:

[0062] Based on the top PET film, glue layer and base PET film structure, the film thickness is set, the thickness value is assigned to the boundary between the film surface and the glue layer, the PET film thickness is adjusted according to the glue layer adhesion requirements, the glue layer interface thickness control variable is loaded, and the value is distributed to each area of ​​the film surface through the initial thickness distribution to generate the initial film thickness distribution parameters;

[0063] Based on the initial thickness distribution parameters of the film layer, the film layer surface thickness distribution balance adjustment is performed. According to the thickness requirements and load requirements, the initial thickness distribution parameters are refined for each area, and the thickness adaptation value and adhesion thickness distribution of each area are adjusted to obtain the thickness balance adjustment parameters.

[0064] Based on the thickness balance adjustment parameters, the thickness distribution values ​​and adhesion positions of the PET film, adhesive layer and base layer of the film structure are determined, the thickness distribution of each layer is confirmed and the initial structure thickness value is generated to obtain the initial parameters of the film structure;

[0065] Based on the top PET film, glue layer and base PET film structure, the thickness distribution algorithm is used to set the film thickness and distribute the thickness value to the boundary between the film surface and the glue layer. The PET film thickness is adjusted according to the adhesion requirements of the glue layer through an iterative calculation method, the glue layer interface thickness control variable is loaded, and the initial thickness distribution of the film layer is numerically calculated to generate the initial thickness distribution parameters of the film layer.

[0066] Based on the initial thickness distribution parameters of the film layer, the balanced adjustment algorithm is used to balance the thickness distribution of the film layer surface. According to the thickness requirements and load requirements, the initial thickness distribution parameters are refined for each area, and the thickness adaptation value and adhesion thickness distribution of each area are adjusted by the weighted average method to obtain the thickness balance adjustment parameters.

[0067] Based on the thickness balance adjustment parameters, the layered structure analysis method is used to determine the thickness distribution value and adhesion position of the PET film, glue layer and base layer of the film structure. The parameter regression analysis is used to confirm the thickness distribution of each layer, generate the initial structure thickness value, and obtain the initial parameters of the film structure.

[0068] Among them, the initial parameters of the membrane layer structure include the thickness of the top layer, the thickness of the glue layer and the thickness of the base layer.

[0069] The specific steps to generate the membrane pressure load distribution value are:

[0070] Based on the initial parameters of the membrane structure, by simulating the lamination state of the adhesive layer and the base layer, specific pressure values ​​are applied layer by layer to different areas of the membrane surface, so that the pressure is transmitted to the surface areas of various parts of the membrane structure, and the pressure transmission state parameters of the adhesive layer are obtained;

[0071] Based on the pressure transmission state parameters of the adhesive layer, the finite element analysis algorithm is used to gradually calculate the position and pressure value of the pressure points on the membrane surface. By distributing the load of the adhesive layer in different areas, the loads on each part of the membrane surface are balanced to obtain the surface pressure distribution parameters.

[0072] Based on the surface pressure distribution parameters, the dynamic balance of the pressure load on the membrane surface and the base layer is adjusted, the pressure value of each surface area is regulated, the load is transferred to each pressure-bearing area, and the membrane pressure load distribution value is obtained;

[0073] Based on the initial parameters of the membrane structure, the lamination simulation method is used to calculate the lamination state of the adhesive layer and the base layer layer by layer. By loading specific pressure values ​​in different areas, controlled pressure is applied on the membrane surface in sequence. The pressure iteration calculation model is used to gradually transfer the pressure to the surface areas of each part of the membrane structure, and the adhesive layer pressure transfer state parameters are generated.

[0074] Based on the pressure transmission state parameters of the adhesive layer, the finite element analysis algorithm is used to allocate the position and pressure value of the pressure points on the membrane surface. The local pressure of the membrane layer is obtained by point-by-point calculation and node interpolation algorithm, and the adhesive layer load is regionally decomposed. The load of each part of the surface layer is balanced through the distribution matrix to generate the surface pressure distribution parameters.

[0075] Based on the surface pressure distribution parameters, the pressure on the membrane surface and the base layer is adjusted layer by layer using the pressure load dynamic balance algorithm. The pressure value of each surface area is dynamically distributed using the step-by-step loading method, and the pressure transfer state of the pressure-bearing area is adjusted in real time to complete the load distribution in each area and generate the membrane pressure load distribution value.

[0076] The membrane pressure load distribution value includes the pressure application area, the load balancing point and the pressure distribution range.

[0077] Finite element analysis algorithm, according to the formula:

[0078]

[0079] Where: σ is the stress at the pressure point on the membrane surface, F is the total pressure applied to the membrane, A is the force-bearing area of ​​the membrane, and F i is the distributed load at each pressure point, d i is the pressure transmission distance of the adhesive layer, E is the elastic modulus of the adhesive layer material, β i is the loading correction coefficient for each area on the membrane surface, k is the friction correction coefficient between the membrane surface and the adhesive layer, and n is the number of pressure points;

[0080] Execution process: First, the total pressure F applied to the film layer reflects the load-bearing capacity required by the entire diamond sticker in actual use scenarios. The pressure is transmitted to the surface of the film layer through the adhesive layer. The stress area A of the film layer is substituted into the formula to preliminarily calculate the stress value σ at the pressure point on the surface of the film layer. By introducing the distribution load parameter F i , finely control the distribution load of different pressure points on the surface of the membrane layer to ensure that each pressure point reasonably distributes the load according to its force requirements, and the pressure transmission distance d of the adhesive layer i Determine the actual conduction distance from each pressure point to the membrane surface by i The elastic modulus E of the adhesive layer represents the resilience of the adhesive layer material, affects the degree of deformation of the film layer after being subjected to pressure, maintains the long-term adhesion of the diamond sticker, and introduces the loading correction factor β i , so that the load of each membrane surface area is adapted to its functional requirements, and the correction coefficient β of different areas is used i To achieve detailed adjustment of the pressure-bearing characteristics of the membrane layer, the friction correction coefficient k is determined through experiments based on the friction characteristics between the membrane layer and the adhesive layer surface, and the friction resistance that may exist in the actual use environment is corrected to ensure the accuracy and consistency of pressure transmission. Finally, the surface pressure distribution parameters are calculated.

[0081] The specific steps for generating the membrane pressure load distribution value include:

[0082] When obtaining the pressure transmission state parameters of the adhesive layer, the pressure distribution in the membrane structure is evaluated by simulating the pressing state of the adhesive layer and the base layer, and an initial force model is established on the contact surface between the adhesive layer and the base layer, and the pressure transmission at different locations is measured at the same time;

[0083] Dynamic balance adjustment of the pressure loads of the membrane layer and the base layer. After obtaining the surface pressure distribution parameters, the pressure distribution standard of the base layer is set, and the pressure in the local area of ​​the membrane surface is gradually adjusted. At the same time, it is compared and adjusted with the pressure load of the base layer until a balance state is reached.

[0084] The specific steps to generate stress distribution adjustment values ​​are:

[0085] Based on the pressure load distribution value of the membrane layer, the multivariate analysis method is used to locate each stress point in the pressure concentration area one by one, determine the stress distribution points on the membrane surface, and generate the stress distribution points in the pressure concentration area by refining the position distribution of each stress point and marking the specific positions of each point in the pressure concentration area;

[0086] Based on the stress distribution points in the pressure concentration area, the pressure value of each adhesive layer is adjusted point by point and layer by layer. By adjusting the pressure of each stress point, the concentrated pressure value is dispersed layer by layer. By reducing the pressure difference, the pressure is evenly distributed in the adhesive layer to obtain a uniform pressure distribution value of the adhesive layer.

[0087] Based on the uniform pressure distribution value of the adhesive layer, the pressure value is redistributed point by point on the surface of the adhesive layer, and the pressure is evenly distributed on the entire surface according to the position balance to obtain the stress distribution adjustment value;

[0088] Based on the pressure load distribution value of the membrane layer, the multivariate analysis method is used to locate each stress point in the pressure concentration area one by one, and the stress distribution points are determined on the surface of the membrane layer. By refining the position distribution of each stress point, the position marking function is called to mark the specific position of each point in the pressure concentration area, and the stress distribution points in the pressure concentration area are generated;

[0089] Based on the stress distribution points in the pressure concentration area, the pressure value of each adhesive layer is adjusted point by point and layer by layer. The pressure size of each stress point is adjusted using the pressure control algorithm. By dispersing the concentrated pressure value, the uniform distribution function is called to evenly distribute the pressure, reduce the pressure difference layer by layer, and obtain the uniform pressure distribution value of the adhesive layer.

[0090] Based on the uniform pressure distribution value of the adhesive layer, the pressure value is redistributed point by point on the surface of the adhesive layer, and the position balance function is called to adjust the pressure uniformly according to the set position, and finally the stress distribution adjustment value is generated;

[0091] Among them, the stress distribution adjustment value includes the stress concentration area, the distribution balance point and the pressure transfer position.

[0092] Multivariate analysis, according to the formula:

[0093]

[0094] Where: σ′ is the improved stress value, F is the force applied to the surface of the film layer, A is the surface area of ​​the force, θ is the angle between the force direction and the normal line of the film layer, φ is the inclination angle of the film layer surface position where the stress point is located, which is used to reflect the local geometric characteristics of the surface, k1 is the influence coefficient of the force application direction, and k2 is the influence coefficient of the material thickness;

[0095] Execution process: First, determine the force F applied to the surface of the film layer, which acts as the adhesion force between the diamond sticker and the substrate. Then measure the angle θ between the force direction and the normal line of the film layer to ensure the accuracy of the stress calculation. Subsequently, evaluate the force area A on the surface of the film layer, confirm the thickness of the film layer, and calculate the thickness influence coefficient k2. Analyze the local geometric features of the film surface, determine the inclination angle φ of the stress point, and finally evaluate the directional influence of the applied force and assign it to the influence coefficient k1. Finally, calculate the improved stress value σ′.

[0096] The specific steps for generating stress distribution adjustment values ​​include:

[0097] Based on the pressure load distribution value of the membrane layer, the pressure concentration area is located, and the pressure load distribution values ​​are scanned and analyzed one by one. The area with abnormally concentrated pressure is determined as the stress concentration area, and the specific layout of the stress distribution is obtained by marking the positions of each stress point in the area one by one. After obtaining the stress distribution points in the pressure concentration area, the concentrated pressure is dispersed layer by layer by reducing the pressure difference point by point, and a uniform stress state is formed by dispersing the pressure difference;

[0098] After obtaining a uniform pressure on the adhesive layer, the pressure is further redistributed point by point on the adhesive layer surface based on the uniform pressure distribution value, so that the pressure on the adhesive layer surface is evenly diffused to the entire surface area.

[0099] The specific steps to generate optimized thickness and temperature values ​​are:

[0100] Based on the stress distribution adjustment value, the pressure data of each adhesive layer and the base layer are converted into a thickness change value, the thickness data is mapped to the pressure distribution surface, and the pressure data is unified by adjusting the thickness change value to generate thickness change pressure data;

[0101] Based on the thickness change pressure data, the temperature control points are matched according to different areas of the adhesive layer, and the temperature control points of each area are loaded to the pressing point. The temperature control values ​​are set in turn according to the pressing point area to obtain the regional temperature matching value;

[0102] Based on the regional temperature matching value, the temperature and pressure are balanced layer by layer in different regions by pressing the joint point, and the thickness change of each region is controlled and distributed to the adhesive layer and the base layer to generate the thickness and temperature optimization value;

[0103] Based on the stress distribution adjustment value, the pressure data of each adhesive layer and the base layer are converted into the thickness change value in proportion by using the reverse deduction algorithm, and the initial conversion ratio is set. The ratio is continuously corrected according to the set maximum allowable error threshold and the pressure data is updated. The final ratio is adjusted to the error range and the ratio is applied to the pressure data to complete the thickness change conversion. The linear interpolation mapping function is called by using the thickness change data, and the mapping boundary value is set so that the thickness data is mapped to the pressure distribution surface item by item. The target and the mapping value are compared by an iterative algorithm, and the final mapping relationship is generated after the incremental iteration is fine-tuned until the value approaches the error range. All thickness data are unified to generate pressure data, and thickness change pressure data is generated;

[0104] Based on the thickness change pressure data, the regional block algorithm is used to generate temperature control points according to different areas of the adhesive layer. The fitting method is called to calculate the fitting temperature point setting value area by area. The temperature range is set by the fitting equation and the point-by-point temperature loading function is called. The calculated fitting temperature control point data is loaded to each pressing point. The regional temperature control value of the pressing point is set by loop and loaded area by area. The upper limit of the temperature setting is compared to perform numerical verification in each area, and the temperature matching relationship of each area is completed and the regional temperature matching value is generated.

[0105] Based on the regional temperature matching value, the multi-region hierarchical recursive balance algorithm is used to set the temperature and pressure of the pressing point layer by layer, and the layer-by-layer optimization function is called to adjust the temperature control value and pressure value of the pressing point in each region in sequence. The thickness change distribution function is used to generate and balance the thickness value distribution of the adhesive layer and the base layer, and the initial thickness is set and set gradually decreasing region by region. Finally, the thickness values ​​of the multi-layer stepwise optimized distribution are calculated, and the thickness and temperature distribution synthesis function is used to complete the setting of the superposition relationship between the multi-layer thickness and temperature data to generate the thickness and temperature optimization values.

[0106] Among them, the thickness and temperature optimization values ​​include the adjusted glue layer thickness, base layer temperature and thickness distribution equilibrium point.

[0107] The specific steps to generate the film consistency control value are:

[0108] Based on the thickness and temperature optimization values, the thickness change of each area of ​​the film layer is measured in real time. By adjusting the temperature value in the temperature control area, the thickness change value is corrected, the temperature level of each temperature control area is refined one by one, the film thickness change parameters are unified, and the film temperature control parameters are obtained;

[0109] Based on the film layer temperature control parameters, synchronize the thickness consistency data of each adhesive layer and the base layer to the lamination area, extract the synchronized data by area, match the thickness value point by point, and keep the thickness of the adhesive layer and the base layer consistent by position adjustment to obtain the film layer thickness consistency parameters;

[0110] Based on the film thickness consistency parameters, the deviation thickness points are located in each area on the film surface, and the thickness of each deviation point is calibrated to the set range, and the thickness is redistributed to ensure consistency across the entire surface, thus establishing the film consistency control value;

[0111] Based on the thickness and temperature optimization values, the real-time monitoring algorithm is used to measure the thickness changes of each area of ​​the film layer, and the temperature adjustment algorithm is called to adjust the temperature value in the control area, correct the thickness change value, refine the temperature level of each temperature control area in turn, unify the film thickness change parameters, obtain the film temperature control parameters and dynamically update the temperature data to generate the film temperature control parameters;

[0112] Based on the film temperature control parameters, the data synchronization algorithm is used to synchronize the thickness consistency data of each adhesive layer and the base layer to the lamination area. The synchronized data is extracted by area, and the thickness value is matched point by point. The thickness of the adhesive layer and the base layer is corrected for consistency using the position adjustment algorithm. During the adjustment process, the linear interpolation function is called to complete the adjustment of the thickness value to obtain the film thickness consistency parameter.

[0113] Based on the film thickness consistency parameters, the deviation calibration algorithm is used to locate the deviation thickness points in each area on the film surface, and the thickness calibration operation is performed. The thickness of each deviation point is corrected according to the set thickness range, and the thickness is redistributed. The thickness allocation function is called to ensure the consistency of the thickness of the entire surface and generate the film consistency control value.

[0114] Among them, the film consistency control value includes thickness calibration point, temperature adjustment range and consistency parameter set.

[0115] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A double-layer adhesive and three-layer film method for making diamond stickers, characterized in that: The following steps are involved: Step 1: Based on the top PET film, glue layer, and base PET film, set the film thickness, distribute the thickness value to the boundary between the film surface and the glue layer, adjust the PET film thickness according to the glue layer adhesion requirements, load the glue layer interface thickness control variable, initially distribute the thickness to various parts of the film surface, and generate the initial parameters of the film structure; Step 2: Based on the initial parameters of the membrane structure, a finite element analysis algorithm is used to simulate the lamination state of the adhesive layer and the base layer, and pressure is applied to different areas of the membrane surface layer by layer to achieve load sharing. At the same time, the position and pressure value of the pressure-bearing point on the surface of the film are calculated, and the load of the adhesive layer is evenly transferred to each area, the surface force is dynamically balanced, and the pressure load distribution value of the membrane layer is obtained; Step 3: Based on the pressure load distribution value of the film layer, a multivariate analysis method is used to detect the pressure bearing condition of the film layer at each stress distribution point in the pressure concentration area, and the concentrated stress points in each area are located on the surface of the film layer. The pressure of the adhesive layer is adjusted point by point and layer by layer to reduce the pressure concentration area, and the uniform pressure is distributed to the entire surface of the adhesive layer to generate a stress distribution adjustment value; Step 4: Based on the stress distribution adjustment value, the pressure data of the thickness change is adjusted to the thickness distribution surface of the adhesive layer and the base layer, the temperature control points in different areas are matched, the temperature range is loaded to each pressing point one by one, the thickness distribution under temperature and pressure is balanced layer by layer, and the thickness and temperature optimization values ​​are generated; Step 5: Based on the thickness and temperature optimization values, correct the temperature control area where the film thickness changes in real time, synchronize the adhesive layer thickness and base layer consistency parameters to each lamination area, calibrate the thickness deviation points of each area to the entire surface of the film layer, and establish the film consistency control value.

2. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 1, characterized in that: The initial parameters of the membrane layer structure include the thickness of the top layer, the thickness of the glue layer and the thickness of the base layer.

3. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 1, characterized in that: The specific steps of generating the membrane layer pressure load distribution value are: Based on the initial parameters of the membrane structure, by simulating the lamination state of the adhesive layer and the base layer, specific pressure values ​​are applied layer by layer to different areas of the membrane surface, so that the pressure is transmitted to the surface areas of various parts of the membrane structure, and the pressure transmission state parameters of the adhesive layer are obtained; Based on the pressure transmission state parameters of the adhesive layer, the finite element analysis algorithm is used to gradually calculate the position and pressure value of the pressure points on the surface of the membrane layer, and the loads of various parts of the membrane surface are balanced by regional distribution of the adhesive layer load to obtain the surface pressure distribution parameters; Based on the surface pressure distribution parameters, the dynamic balance of the pressure load on the membrane surface and the base layer is adjusted, the pressure value of each surface area is regulated, the load is transferred to each pressure-bearing area, and the membrane pressure load distribution value is obtained; The membrane layer pressure load distribution value includes a pressure application area, a load balancing point and a pressure distribution range.

4. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 1, characterized in that: The finite element analysis algorithm is according to the formula: Where: σ is the stress at the pressure point on the membrane surface, F is the total pressure applied to the membrane, A is the force-bearing area of ​​the membrane, and F i is the distributed load at each pressure point, d i is the pressure transmission distance of the adhesive layer, E is the elastic modulus of the adhesive layer material, β i is the loading correction coefficient for each area on the membrane surface, k is the friction correction coefficient between the membrane surface and the adhesive layer, and n is the number of pressure points.

5. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 3, characterized in that: The specific steps of generating the membrane layer pressure load distribution value include: When obtaining the pressure transmission state parameters of the adhesive layer, the pressure distribution in the membrane structure is evaluated by simulating the pressing state of the adhesive layer and the base layer, and an initial force model is established on the contact surface between the adhesive layer and the base layer, and the pressure transmission at different locations is measured at the same time; Dynamic balance adjustment of the pressure loads of the membrane layer and the base layer. After obtaining the surface pressure distribution parameters, the pressure distribution standard of the base layer is set, and the pressure in the local area of ​​the membrane surface is gradually adjusted. At the same time, it is compared and adjusted with the pressure load of the base layer until a balance state is reached.

6. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 1, characterized in that: The specific steps of generating the stress distribution adjustment value are: Based on the pressure load distribution value of the membrane layer, a multivariate analysis method is used to locate each stress point in the pressure concentration area one by one, and the stress distribution points are determined on the surface of the membrane layer. By refining the position distribution of each stress point, the specific position of each point in the pressure concentration area is marked to generate the stress distribution points in the pressure concentration area; Based on the stress distribution points in the pressure concentration area, the pressure values ​​of each adhesive layer are adjusted point by point and layer by layer, and the concentrated pressure values ​​are dispersed layer by layer by adjusting the pressure of each stress point, and the pressure is evenly distributed in the adhesive layer by reducing the pressure difference to obtain a uniform pressure distribution value of the adhesive layer; Based on the uniform pressure distribution value of the adhesive layer, the pressure value is redistributed point by point on the surface of the adhesive layer, and the pressure is evenly distributed on the entire surface according to the position balance to obtain a stress distribution adjustment value; The stress distribution adjustment value includes a stress concentration area, a distribution balance point and a pressure transfer position.

7. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 1, characterized in that: The multivariate analysis method is according to the formula: Where: ′ is the improved stress value, F is the force applied to the surface of the film layer, A is the surface area of ​​the force, θ is the angle between the force direction and the normal of the film layer, φ is the inclination angle of the film layer surface where the stress point is located, which is used to reflect the local geometric characteristics of the surface, k1 is the influence coefficient of the force application direction, and k2 is the influence coefficient of the material thickness.

8. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 6, characterized in that: The specific steps of generating the stress distribution adjustment value include: Based on the pressure load distribution value of the membrane layer, the pressure concentration area is located, and the pressure load distribution values ​​are scanned and analyzed one by one. The area with abnormally concentrated pressure is determined as the stress concentration area, and the specific layout of the stress distribution is obtained by marking the positions of each stress point in the area one by one. After obtaining the stress distribution points in the pressure concentration area, the concentrated pressure is dispersed layer by layer by reducing the pressure difference point by point, and a uniform stress state is formed by dispersing the pressure difference; After obtaining a uniform adhesive layer pressure, the pressure is further redistributed point by point on the adhesive layer surface based on the uniform pressure distribution value, so that the adhesive layer surface pressure is evenly diffused to the entire surface area.

9. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 1, characterized in that: The thickness and temperature optimization values ​​include the adjusted glue layer thickness, base layer temperature and thickness distribution equilibrium point.

10. The double-layer adhesive and three-layer film method for making diamond stickers according to claim 1, characterized in that: The film consistency control value includes a thickness calibration point, a temperature adjustment interval and a consistency parameter set.

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