Service Life
After three years of operation, the hinge mechanism on a three-platen machine tends to wear out, making it less suitable for the production of high-precision items. In contrast, the two-platen machine from ZHENHUA does not experience hinge wear, offering a longer service life, lower maintenance costs, and consistent high precision throughout its lifespan. This makes it ideal for producing products with stringent precision requirements.
Performance Status
In a standard three-platen machine, the clamping force is established by adjusting hydraulic pressure and mold thickness. The clamping force is often estimated based on the reading from a pressure gauge, which can lead to inaccuracies. On the other hand, the two-platen injection molding machine from ZHENHUA employs computerized automatic mold adjustment, allowing for precise clamping force settings. This method ensures repeatability, effective mold protection, uniform distribution of clamping force, and enhanced precision.
Mold Adjusting Mechanism
For a three-platen machine, adjustments need to be made to the entire assembly, including the two platens, tail platen, and hinge mechanism. In larger three-platen models, mold adjustments become increasingly complex, and the adjusting screws and threaded columns must endure significant forces, making them susceptible to “stripping.” Conversely, the ZHENHUA two-platen injection molding machine features a short and robust tie-bar, leading to a more stable mold clamping structure.
Clamping Mechanism
In a three-platen machine, the equipment remains under maximum clamping force throughout the entire cycle except during ejection, which can lead to considerable wear and tear on both the equipment and molds, as well as preventing the release of internal stresses in the products. After injection, the ZHENHUA two-platen machine can reduce the clamping force, thereby decreasing internal stress in the products and minimizing the time the equipment and molds are under pressure. This results in over an 80% reduction in average time under pressure, significantly extending the service life of both the equipment and molds.
Footprint
The three-platen machine generally has a larger structure that takes up more factory space. In contrast, the ZHENHUA two-platen injection molding machine, while maintaining the same tonnage, boasts a more compact design that occupies less floor space. Additionally, the ZHENHUA two-platen machine offers a larger mold capacity and extraction space, making it well-suited for molding large, deep-cavity products such as trash cans, automotive components, logistics boxes, and large pallets.
This comparison highlights the advantages of choosing a two-platen injection molding machine over a three-platen model for various applications.