Views: 0 Author: Site Editor Publish Time: 2021-03-30 Origin: Site
As humans entered the 21st century, advanced manufacturing technologies have led to major changes in the product structure and production processes of the manufacturing industry, as well as in the mold industry. In order to adapt to the development of modern society, the mold industry must adjust the manufacturing process, design technology and production mode of the industry to a certain extent. According to past experience, quality, cost and schedule are three important aspects that limit the development of the injection mold industry. In addition, the quality and cost are closely related to the construction period. The shortening of the construction period can greatly reduce the cost, but the quality of the product may be relatively low. Therefore, the construction period is particularly important for the development of injection molds. For the manufacturing period, it is often related to the standardization and automation design of the injection mold. If the standardized design of the injection mold can be achieved, the quality of the product can be guaranteed. If the automatic design of the injection mold can be realized, the repetitive work can be reduced. Improve work efficiency, thereby shortening construction time and reducing costs.
First, the standardization of injection mold design
1.1 Development of injection mold standardization
Everyone in the industry knows that countries with more developed industries attach great importance to standardization. This is not only because the standardization of accommodation molds can ensure the quality of the products, but also can greatly improve the efficiency of the work and the efficiency of the enterprise. The formulation and implementation of mold technology standards, the production and application of mold products, and the promotion and promotion of mold standards are the main contents of mold standardization work. The development of China's injection molds started relatively late compared with other developed countries, and the lack of propaganda of mold standardization has caused China's mold standardization work to have a big gap with other countries.
1.2 Standardized design of injection molds
This paper studies the related research on the standardization of injection molds and puts forward the following regulations according to the current situation of injection molds.
1) According to the actual needs of the company, a unified mold design framework shall be developed, and the position of the mold parts assembled in the frame shall be standardized.
2) Standardization of general mold frame size. According to the type and size of the product, the standard size range of each plate of the mold base can be determined, and the standard of the LKM Longji standard mold base can be formulated into the company's standard.
3) Develop detailed mold structure design standards according to the classification of the forming part, the gating system, the cooling and heating system, the ejector system, the slanting mechanism and the slider mechanism.
4) The standard parts of the mould parts are preferred. The standard parts can be standard parts processed according to the company's own standards, or standard parts produced by professional mold parts companies (such as HASCO, DME, MISUMI, Zhenggang, etc.).
5) For products with similar structural heights, build a special injection mold library according to the external dimensions of the product to reduce the mold design time. For example, according to the LCD/LED flat-panel TV, the LCD/LED flat-panel TV cover and the bottom case are corresponding. Mold library.
6) Formulate rules for synchronized design, so that multiple engineers can achieve clear tasks and do not interfere with each other when designing the same set of molds together.
7) Auxiliary design references in the mold design process such as points, lines, planes and surfaces are to be closed and opened by the specified layer, and the names of the layers are to be unified.
Second, the injection mold automation design
The automated design of the mold can effectively improve production efficiency, shorten the construction period and reduce costs. The EU supported the research and development project of paperless mold design and manufacturing between 1998 and 2000 and achieved certain results. This article will then discuss the automation design of the mold on this basis.
Injection mold design has a strong experience, design experience has a very important role in the design of injection molds. At present, the automation design of mold companies generally adopts CAD/CAM/CAE technology. The use of this technology for mold design can be divided into the following processes.
2.1 Evaluation and automatic quotation
The quotation is too high and the contract will be taken away by competitors who can give a more accurate quotation. If the quotation is too low, you may be able to make a loss. The establishment of an automatic quotation system in line with the company's interests can solve the problem of inaccurate quotation and slow quotation time. At present, mold companies of a certain scale have established automatic mold quotation systems.
2.2 Entering the product model
Research shows that the original model data required by the mold manufacturer can not be completed by a single software. The data required by the manufacturer is the raw data generated by a variety of software such as less popular software and professional software. It is unrealistic to rely on a single CAD/CAM software system and cannot meet product design requirements. Converters purchased on the market are a more economical method, but most of the systems carried by such converters can only be used once, which is not cost-effective in the long run. In order to solve this problem well, some companies offer online conversion services. The online conversion service is a pay-per-view service that pays for the service once, so that you don't have to spend a lot of money to purchase the relevant conversion software.
2.3 Complete product model
After completing the life cycle, you will enter the stage of the complete product model. Sometimes some designers in the model intentionally did not complete, just designing the part of the model that is sufficient to achieve the patterns and styles required to design the product, giving the manufacturer a general model, and the detailing part is mainly from the mold manufacturer. carry out.
2.4 Automatic mold generation
After trimming the product model and ensuring that it can be smoothly machined, the following is the mold generation phase.
The production of the mold involves two steps, one of which is to produce the core part of the mold (such as fixed mold, movable mold, insert, inclined top and slider, etc.); the second is to produce the mold base and other accessories and structures. The design software for mainstream injection mold design (such as Pro/Engineer and UG) can basically realize the automatic generation of mold through the special design software and secondary development of plug-in.
2.5 Processing preparation
Mold parts need to be prepared before the formal processing. For those parts that need to be rested, the machine needs to select the appropriate machining tool for rest. For those places where it is not possible to use the machining tool, it is necessary to take more precise. When the processing is completed, the electric discharge machining method is generally used for rest, and finally the formal processing is performed.
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Tuofang company is specialized in designing and manufacturing Plastic Injection.
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