Across the country, numerous factories and enterprises specializing in hot runner technology are committed to producing high-quality preform molds. Among them, the forming process of the 8-cavity hot runner preform mold is particularly complex and precise, and its forming effect is deeply influenced by various factors. When exploring these influencing factors, it is necessary to mention that the main factors affecting the forming of the 8-cavity hot runner preform mold in the joint mold analysis are:
(1) Embryo formation stage: In the extruder, the polymer undergoes a series of processes such as transportation, melting, mixing, and pumping to finally form the embryo. At this stage, Heyan Mold ensured the precision of material processing with its exquisite design. Among the key process parameters that affect wall thickness distribution, in addition to the molecular weight distribution and average molecular weight of the material, the collaborative work of the joint research mold and blow molding machine is also crucial. Especially the temperature control system of the blow molding machine, including the temperature settings of the hopper, material cylinder areas, flanges, and storage mold heads, needs to be matched with the material and design characteristics of the joint research mold to achieve the best melting effect and embryo quality.
(2) Blowing bottle model embryo cutting stage: The embryo is precisely extruded from the gap between the mold lip and the mold core of the joint research mold. The expansion and sagging phenomenon of the embryo during this stage directly affects the subsequent molding. Through its precise die head diameter design and advanced wall thickness control system (including axial and circumferential adjustment), HeYan Mold finely regulates the gap between the die lip and the die core, effectively controlling the wall thickness distribution of the embryo and ensuring stability and consistency during the cutting stage.
(3) Pre blowing stage of embryo: In order to prevent contact and adhesion on the inner surface of the embryo and improve the uniformity of the product wall thickness, the pre blowing step is crucial. At this stage, the collaborative operation between the joint research mold and blow molding machine once again demonstrates its advantages. By precisely controlling the pre blowing pressure and time, the joint research mold can effectively support the embryo, reduce sagging phenomenon, and lay a good foundation for subsequent high-pressure inflation.
(4) High pressure blowing stage of the embryo: This is the decisive stage for achieving the final plastic forming of the product. The material, structural design, exhaust system, and cooling system (such as the distribution of cooling water channels and inlet water temperature control) of the joint research mold played a key role in this stage. The process parameters such as material shrinkage rate, blowing pressure, and time, under the precise control of the joint research mold, work together on the mold embryo to make it closely adhere to the mold cavity, forming high-quality products. In addition, by continuously optimizing process parameters, the joint research mold not only improves production efficiency, but also significantly reduces raw material consumption, further optimizing the comprehensive performance of the product.
In summary, the joint research mold plays an indispensable role in the forming process of the 8-cavity hot runner preform mold. Its design accuracy, material selection, and collaborative operation ability with the blow molding machine jointly determine the quality and performance of the final product.
Foshan Heyan Precision Mould Technology Co., Ltd.'s main business is preform moulds, bottle blowing moulds, bottle cap moulds and other products. It has a strong engineering, R&D, technology and sales team, advanced processing equipment and rich project experience. If you want to know more or have special needs, please call 13318345050, or add our WhatsApp.
