Abstract: The specific application of CAD/CAE technology in the design of a certain metal beverage can and the design of the mould is introduced in detail. The design application shows that the application of CAD/CAE technology in the field of metal packaging helps to optimize the product structure and molding process design, speed up the product design process, and shorten the product launch cycle; at the same time, the application of CAD/CAE technology can improve product performance. , reduce product development costs.

Keywords: CAD/CAE; beverage cans; metal packaging

CLC number: TP391.9 Document code: A

The Application of CAD/CAE in Can Making

Huang Jing, Ni Junyi

(ORG Packaging co., Ltd, Beijing 101407)

Abstract: Introduced the application of CAD/CAE in the design of a metal beverage can and the mold. Using CAD/CAE in metal packaging area is useful of estimation product structure and forming technique, improving the performance, cut down the cost of R&D, Expediting the designing course and getting the product into market quickly.

Key Words: CAD/CAE,Beverage Can,Metal packaging

1 Research background

The increasingly fierce market competition environment has led more and more designers and manufacturing companies to realize that only by launching new products with superior performance faster than Others can the designed products have stronger market competitiveness. To this end, it is necessary for product designers to keep up with the times and fully grasp the various technical product development tools. In product audits, CAD/CAE (Computer Aided Design/Computer Aided Engineering) technology is commonly used. Computer Aided Design (CAD) refers to a new design method in which designers and computers are organically combined to give full play to their respective strengths; Computer Aided Engineering (CAE) is a technology that includes numerical calculations and databases. The core technology of a comprehensive software system, including computer graphics, engineering analysis, and simulation, is the modeling and numerical implementation of engineering problems. Due to the rational use of CAD/CAE technology, it can effectively shorten the product development cycle, and thus it is widely used in various sectors of product design and production [1-2].

As a leader in the metal packaging industry, ORG is more in charge of the development of information technology and fully utilizes the advantages of CAD/CAE technology in the design and production process. Existing research shows that the introduction of this technology into the field of metal packaging can achieve the following benefits:

1) CAE simulation can effectively shorten the development cycle of new products, which can significantly reduce the research and development costs of the product;

2) The introduction of virtual prototypes reduces the number of sample trials, and can accurately predict the performance of the product and its specifications, thus enabling the design of high-quality products;

3) Designers can find irrational phenomena that may exist in the scheme at the early stage of development and find problems early so as to avoid detours and shorten the design cycle.

In view of the above advantages, this paper intends to use CAD/CAE technology to specifically design a beverage can product in the metal packaging industry to discuss the application advantages of CAD/CAE technology in the design of the structural design and the forming mold. Designers of the company or other related industries provide references.

2 Product Design

When CAD/CAE technology is used to design various products, this design concept should be introduced early in product development to make full use of its simulation technology to drive the design of the product. This will not only reduce the number of physical tests, but also help reduce the number of physical tests. The rejection rate of the sample. This shortens the product development cycle, lowers R&D costs, and improves product performance.

Figure 1 shows the design of the bottom cover using CAD/CAE.

a) bottom cover roll seal structure design

b) bottom cover pressure analysis

Figure 1 bottom cover design

Fig.1 Design of the end

In the design process, the three-dimensional CAD software was used to first parameterize the bottom lid structure of the tank (shown in Figure 1(a)). CAD was used to design the bottom lid coil seal structure to verify the structural changes after molding and rounding. After the design of the bottom cover structure parameters is completed, the finite element technology needs to be applied to verify whether the bottom cover compressive strength meets the design requirements. In this design, the stress cloud at the time of buckling at the bottom cover structure is shown in Figure 1(b). As can be seen from the figure, the design parameters have reached the expected design requirements. Considering the requirements of the roll seal structure and the dimensions of the structure, determine the size of the bottom cover blank.

Figure 2 shows a schematic diagram of a beverage can body design using CAD/CAE.

a) can body structure

b) Axial pressure analysis

Figure 2 can body design

Fig. 2 Design of the canbody

In the design process, the structural parameters of the can body are first set using CAD software. The can body structure of the beverage can is designed as shown in (a) of Figure 2. The key parameters in this design are the internal and external arc diameters of the constricted neck. The size of the cover should also be taken into account in the size of the bottom cover. After determining the size parameters of the can body, CAE technology was used to analyze the axial strength of the can bodies with different internal and external arc diameters. The axial can pressure resistance of the can body is shown in Fig. 2(b). Then, based on the results of the axial strength analysis, the optimal design parameters of the necking are determined, and finally the appearance and size parameters of the product are obtained.

3 Mold Design

In the past 20 years, CAD and CAE technologies, which are mainly used for mold design, have developed rapidly and have become a systematic project to transform traditional mold production methods [3-4]. The application of these technologies can shorten the mold design and manufacturing cycle, reduce production costs, and improve product quality.

Figure 3 shows the bottom cover mold design schematic. Using CAD design can intuitively analyze the interference and movement of the mold, and can quickly output two-dimensional drawings, which makes the entire mold design process easier and faster.

Figure 3 Mold Design

Fig.3 Design of the mold

In the mold design, the mold designers and the process designers of the tissue mold products can use the CAE technology before the mold processing to simulate and analyze the entire molding process on the computer. This process can be reduced or even avoided. Mold quality and reduce costs.

After the structural design is completed, it is necessary to apply the CAE technology for product forming analysis. At this time, it is necessary to comprehensively consider the influence of the process conditions such as mold clearance, friction, blank holder force, and the like on the product. Product design, material selection, and process design should be closely linked. Only in this way can we quickly simulate defects such as wrinkling, cracking, and under-formation after molding of metal packaging products, and optimize process parameters such as blank-holder force and friction, and check process. The rationality provides a comprehensive solution for product molding process design and mold design.

Figure 4 shows the tank deformation and stress cloud during the necking process of a beverage can using finite element software.

Figure 4 Product Molding Analysis

Fig.4 Analysis of the necking

We can find that the use of CAE finite element analysis software can effectively optimize the mold gap, size and other related parameters.

It can be seen that metal beverage can design and engineering technicians can use CAD/CAE technology to design and optimize metal cans' product performance, mold structure, forming process, numerical control processing, and production management.

4 Conclusion

At a time when the global economic situation is in recession, technological innovation is the best way for the development of metal packaging production enterprises. Based on existing products, technological innovation and technological improvement can minimize design costs and production costs. Can enrich product categories, and ultimately improve the competitiveness of the enterprise market. The application of CAD/CAE technology in the field of metal packaging not only accelerates the cycle of product launches but also improves product performance.

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