How does semi-finishing ensure the accuracy and performance of the rotational mold of the water tank storage container?

In the entire process of mold manufacturing, the semi-finishing stage follows the rough machining and plays an important role in connecting the upper and lower parts. For the rotational mold of the water tank storage container, the rough machining stage mainly completes the initial forming of the blank, but at this time, the mold still has a large adjustment space in terms of contour, size and internal structure. The task of the semi-finishing stage is to further modify and improve the precision of these initially formed molds to ensure that they meet the final design requirements.

In the semi-finishing stage, the contour and size of the mold are further adjusted accurately. This process mainly relies on precision grinding, boring and other process methods. The grinding process removes a small amount of the mold surface through the grinding wheel to achieve the purpose of accurately adjusting the contour and size. The boring process is mainly used for the processing of the holes inside the mold to ensure that the diameter, depth and position accuracy of the holes meet the design requirements. Through these precise process methods, the contour and size of the mold are finely polished and corrected to ensure that its accuracy meets the predetermined standards.

It is worth noting that in the semi-finishing stage, the mold contour and size adjustment are not carried out in isolation, but need to be closely integrated with the overall structure and functional requirements of the mold. For example, for the rotational mold of a water tank storage container mold that needs to withstand greater pressure, the adjustment of its contour and size also needs to consider the strength and rigidity requirements of the mold to ensure that the mold will not deform or break during use.

In addition to the precise adjustment of the contour and size, the semi-finishing stage also requires necessary optimization of the internal structure of the mold. This process mainly includes the design of the mold's cooling system, exhaust system design, and cavity structure design.

The cooling system is crucial for rotational molds. During the rotational molding process of the water tank storage container, the mold needs to withstand the melting and solidification process of high-temperature plastics, so the cooling efficiency of the mold directly affects the molding quality and production efficiency of the product. In the semi-finishing stage, the design of the cooling system needs to fully consider factors such as the shape, size, and material properties of the mold to ensure that the cooling water can flow evenly and efficiently through all parts of the mold, thereby achieving the purpose of rapid cooling.

The exhaust system also has an important impact on the performance of the rotational mold. During the rotational molding process, the air inside the mold needs to be discharged in time to avoid defects such as bubbles and shrinkage holes. Therefore, in the semi-finishing stage, the design of the exhaust system needs to ensure that the gas inside the mold can be discharged smoothly, while avoiding leakage and contamination of the plastic.

The design of the cavity structure is also one of the important tasks in the semi-finishing stage. The rationality of the cavity structure directly affects the molding quality and production efficiency of the product. In the semi-finishing stage, the size, shape, depth and surface roughness of the cavity need to be finely adjusted to ensure that the plastic can evenly and fully fill the cavity, so as to obtain a water tank storage container with smooth appearance and precise size.

In the semi-finishing stage, the selection of materials and processes also has an important impact on the precision and performance of the mold. For the rotational molding mold of the water tank storage container, the commonly used materials include high-quality alloy steel, stainless steel, etc. These materials not only have high strength, high hardness and good wear resistance, but also can maintain stable performance under high temperature environment.

In terms of process selection, the semi-finishing stage needs to select appropriate processing equipment and process parameters according to factors such as the specific shape, size and material properties of the mold. For example, for molds with complex shapes and high dimensional accuracy requirements, CNC machining centers can be used for processing; for molds with more internal holes, EDM or laser processing can be used.

The semi-finishing stage plays a vital role in improving the accuracy and performance of water tank water storage container rotational molds. Through precision grinding, boring and other process methods, the contour and size of the mold are further accurately adjusted; by optimizing the internal structure such as the cooling system, exhaust system and cavity structure, the performance and service life of the mold are significantly improved.

With the continuous development of mold manufacturing technology, the semi-finishing stage still faces many challenges. For example, how to further improve processing accuracy and efficiency to reduce production costs and improve production efficiency; how to better respond to the processing needs of molds with complex shapes and special materials to broaden the application field of molds, etc. The solution to these problems requires mold manufacturing companies to continuously explore and innovate to promote the continuous progress and development of mold manufacturing technology.