| In today’s packaging market,it is all the more necessary to reduce the packaging design of product packaging.Existing research on the design of the reduction cushion packaging has a definite goal and complicated optimization theory.For packaging designers without an optimized theoretical basis,the operation is complicated and not conducive to the promotion.Therefore,this thesis takes the packaging scheme of the new low-voltage circuit breaker as the research object,and focuses on the in-depth research and discussion of the reduced packaging design process using these two methods.First of all,with three indicators of packaging practicality,economy and environmental protection,a quantitative evaluation system for packaging design schemes is built.Secondly,the response surface model of the thickness of the bottom cushion,the size of the bottom edge of the bottom cushion structure and the response acceleration of the product is proposed.Using a regression analysis method,a reasonable bottom cushion packaging structure is obtained.In this thesis,based on the analytic hierarchy process,combined with the comprehensive judgment formula,a packaging scheme evaluation system is built to judge and select the preliminary transportation packaging design scheme.In order to reduce the impact of the expert scoring method on the human factors of the scoring,the standard score table is defined.The index characteristics are used as the standard,and the scores of each scheme are given according to the standard score table to obtain the scoring matrix.At the same time,this article covers through detail how to use various index characteristics as the standard to evaluate the packaging scheme,such as introducing carbon footprint analysis to analyze the environmental protection of the packaging scheme and the resource depletion situation.Then,the scoring matrix is substituted into the inclusive judgment formula,and the foam cushion packaging scheme is obtained as the optimal packaging scheme.Finally,a set of scientific and reasonable packaging scheme evaluation system will be established to provide a reliable preference for the future construction of the packaging scheme evaluation system.In order to improve the phenomenon of excessively high cost of traditional cushion packaging design,this thesis proposes combining the two technologies of the finite element method and response surface optimization method to optimize the structure of the bottom cushion.Firstly,an optimized mathematical model of the bottom cushion is established.The design variables are the thickness of the bottom cushion and the size of the edge of the bottom cushion.The acceleration response of the product under the falling condition of the package is invoked as the constraint.The objective function is the thickness of the bottom cushion structure.The authors used simulation analysis to find the dynamic relationship between design variables and product response acceleration,that is,the package’s response acceleration gradually decreases with the increase of the thickness of the bottom cushion under the condition of the cushion packaging structure unchanged;Under the condition that the thickness of the cushion packaging structure is unchanged,as the size of the bottom cushion from the side increases,the product response acceleration increases first and then decreases.Under the joint action of the two design variables,product response acceleration value exhibits a non-linear change relationship.In order to clarify this change relationship,this thesis uses simulation results to build a response surface model between design variables and product response acceleration using MATLAB,and discusses it with nonlinear regression analysis.Finally,the bottom cushion thickness is 20mm,and the distance between components and the edge is 60mm.The cushion performance of the bottom cushion is better.At the same time,this thesis changes the 0427 type accessory box with an origami structure.After optimization,the thickness of the bottom cushion of the plan is reduced by 5mm compared with the original plan,and the material consumption of the accessory box is decreased by 20%compared with the original plan.Finally,a finite element method is used to analyze the feasibility of the optimized package.The product response acceleration value is 65g,which confirmed that the optimized structure is feasible.It can be seen that this method can effectively and reliably optimize the design of the packaging structure,and at the same time provides the theoretical basis and guidance for the designer to carry out product reduction cushion packaging design. |
