Because the traditional high-speed precision injection molding machines used to consume energy very quickly, and wasteful,

In order to change this situation, the bowling cloud servo system was installed in a high-speed precision injection molding machine to save energy and reduce production costs.

High-speed precision injection molding machine performance requirements: The basis for determining precision injection molding is the precision of the finished product, that is, the dimensional tolerance, shape tolerance and surface roughness of the finished product. There are many relevant conditions for precision injection molding, and the most basic ones are the basic factors of plastic materials, molds, injection molding processes and injection molding equipment. When designing plastic products, plastic materials should be selected first, and plastics capable of high-speed precision injection molding machines must use materials with high mechanical properties, dimensional stability, good creep resistance, and environmental stress cracking resistance. Secondly, the applicable high-speed precision injection molding machine should be selected according to the selected plastic material, finished product dimensional accuracy, weight, quality requirements and predetermined mold structure. In the process of processing, it is especially important to pay attention to the accuracy of the mold, the shrinkage of the injection molding, and the variation of the ambient temperature and humidity of the product.In the high-speed precision injection molding machine, the mold is one of the keys to obtain precision plastic products that meet the quality requirements. The molds for precision injection molding should meet the requirements of product size, precision and shape. However, even if the precision and size of the mold are uniform, the actual size of the molded plastic article is inconsistent due to the difference in the amount of shrinkage. Therefore, effective control of shrinkage of plastic products is very important in precision injection molding technology.

Whether the mold design is fair or not will directly affect the shrinkage rate of the plastic product. Since the mold cavity size is obtained from the size of the plastic product plus the estimated shrinkage rate, it is not only related to the gate form of the mold, the gate position and distribution. Related to, and related to the crystal orientation (anisotropic) of engineering plastics, the shape and size of plastic products, the spacing and location to the gate. The main factors affecting plastic shrinkage are heat shrinkage, phase change shrinkage, orientation shrinkage, compression shrinkage and elastic recovery. These factors are related to the molding conditions or operating conditions of precision injection molded products. Therefore, the design of the mold must consider the relationship between these influencing factors and the injection molding conditions and the requirements of the appearance of the image, such as injection pressure and cavity pressure and filling speed, injection melt temperature and mold temperature, mold structure and gate form And distribution, as well as the cross-sectional area of the gate, the thickness of the product, the content of reinforcing filler in the plastic material, the crystallinity and orientation of the plastic material and other factors. The influence of the above factors also differs depending on the plastic material and other molding conditions such as temperature, humidity, continued crystallization, internal stress after molding, and performance of the injection molding machine.

Because the injection molding process is the process of converting plastic from solid (powder or pellet) to liquid (melt) to solid (product). From the pellets to the melt, from the melt to the product, the temperature field, stress field, flow field and density field are used in the middle. Under the action of these fields, different plastics (thermosetting or thermoplastic, crystallinity) Or non-crystalline, reinforced or non-reinforced, etc.) have different polymer structural morphology and rheological properties. Any factors that affect the above "field" will affect the physical and mechanical properties, size, shape, precision, appearance and quality of plastic products.

Thus, the intrinsic link between process factors and polymer properties, structural morphology, and plastics is manifested by plastics. It is important to analyze these intrinsic connections and to arrange injection molding machines and other processing equipment fairly. Precision injection molding and ordinary injection molding also differ in injection pressure and injection rate. Precision injection molding usually uses high pressure or ultra high pressure injection and high speed injection to obtain a small molding shrinkage. In view of the above various reasons, in addition to considering the design elements of general molds, the following points must be considered when designing precision injection molds:

1. Use appropriate mold dimensional tolerances;

2, to prevent the production of natural shrinkage rate error;

3. Prevent injection molding deformation;

4. Prevent demoulding from occurring;

5. Minimize mold manufacturing errors;

6. Prevent errors in mold accuracy;

7. Maintain mold accuracy.