This day for friends to talk about the basic steps of injection molding, injection molding is a very popular manufacturing skills, the realization of the process can not be separated from three basic steps, respectively product design, mold design and manufacturing process, which is composed of three outline elements of injection molding. What kind of skills can promote the better realization of these links of work?
Product design is an intense aspect of the injection molding manufacturing process. Precise design is to achieve the desired goal to a pleasant level, but it may require a lot of creativity. Product design is usually done through the application of computer aided design, and a few specific techniques to avoid the error of high prices in the product design process as symmetrical as possible wall thickness decisions, and gradually transition from one thickness to another when thickness changes are unavoidable.
Equally intense is avoiding architectural design pressures such as angles of 90 degrees or less. A team of skilled design engineers will be able to work together to design and improve a variety of solutions to meet the complexity of a specific project, providing a solid foundation for the smooth implementation of injection molding.
Injection molding process, can not ignore another mold design, as the overall product design, mold design is another in the injection process to guard against shortcomings of the opportunity. Improper design scheme will cause draft demoulding question, spend a lot of time and money.
When a product has been accurately designed, engineered and moulded, it is time to begin realistic manufacturing, which is the foundation of the injection molding process. The thermosetting or thermoplastic material in pellet form is passed through the hopper into the heating barrel, the plastic is heated to the preset temperature by a large screw through the door and the mold.
Once reached the mold, the particles will remain in place to apply proper pressure during the scheduled cooling period. After reaching the necessary time, the mold can be formed. This cycle is repeated over and over again, and can be used to manufacture bulk injection parts.
In short, the process of injection molding needs to have a perfect plan as a guide, to create high compliance, efficiency and beautiful mold for manufacturing preparation. Add useful communication and provide transparency throughout the design process, thus obtaining sublime injection molding parts.
The precision of plastic mold is mainly reflected in the machining precision of the mold parts and the matching precision of the associated mold parts, which is a general index. High-quality plastic mold parts are the condition of ensuring the accuracy of the mold, but without a good mold device, high precision mold can not be manufactured. Although the mold processing technology is limited, but the precision of the ordinary mold should be coordinated with the precision of the product parts.
The die accuracy measured in non-working condition is the static accuracy of the die. Under working conditions, affected by working conditions, the static accuracy value of Wuhan plastic mold changes, which is called dynamic and static accuracy. The dynamic and static accuracy of the die has a practical role in the practical manufacturing.
The main components that affect the accuracy of Wuhan plastic mould are as follows.
(1) Product accuracy. The accuracy of mold working parts is higher than that of product parts. The higher the precision of the product parts, the higher the precision of the die working parts. The precision of the mold not only simply affects the precision of the parts of the product, but also has a great impact on the manufacturing cycle and manufacturing cost of the mold.
(3) The technical level of the mold installer. The guarantee of die accuracy needs high level die fitter to realize, especially the beautiful surface roughness value of die finish surface mainly depends on the die fitter. Therefore, the technical level of the mold installer is the tension component that affects the accuracy of the mold.