The development trend of heat flow path

The components of the heat flow path technology show several main development trends.

1. It’s the miniaturization of components. Miniaturization of the components can realize the first mock exam of small products and multi gate filling of large products. By reducing the nozzle space, more cavity can be arranged on the mold, which can improve the product production and injection machine utilization rate, which is very important for the modern plastic processing industry with “time is money”. Moldmaters, an international famous mold enterprise, has developed nozzles for small parts, including integral heater, needle tip and melt channel, with a volume diameter of less than 9 mm, and gate spacing of only 10 mm, and can be molded into products with a quality of 1-30 G.
2. It is component standardization. At present, the user requires that the die design and manufacturing cycle is shorter and shorter, and standardizing the hot runner elements is not only conducive to reducing the repetition of design work and reducing the cost of the mold, but also for the replacement and maintenance of vulnerable parts. Nozzles, stem and diverter plates from companies such as Husky, Presto and moldmaters are standard, which facilitate rapid replacement and delivery of moulds. Now, the mold can be delivered only four weeks abroad.
3. It is the reliability of design. Nowadays, the design of hot runner plate and the research and development of pressure distribution, temperature distribution and sealing of the heat nozzle joint are paid great attention to by the major mold companies at home and abroad. The development and utilization of the injection mold for laminated hot runner are also hot spots. The number of cavity can be increased effectively by the stack mold, but the requirement of the injection machine die closing force only needs to increase by 10% – 15%. The stack hot runner mold has been industrialized in some developed countries abroad.
4. It is the accuracy of temperature control system. In the mold molding of hot runner, developing more precise temperature control device and controlling the temperature of molten resin in hot runner plate and gate are effective measures to prevent resin from overheating degradation and product performance reduction.

The wide application of heat runner technology is a great change of plastic mold. In the aspect of injection molding, it has many incomparable advantages. With the technology becoming more mature and the manufacturing cost is reduced, the heat flow path technology will show more and more great advantages. In recent years, the world famous hot runner technology suppliers have entered the Chinese market in various ways, which shows the huge development potential of the hot runner mould Market in China.

During the forming process of hot runner, the temperature of plastic melt is controlled accurately in the runner system. Plastic can flow into each cavity in a more uniform and uniform state, and the result is the parts of the same quality. The quality of gate of hot runner is good, the residual stress is low after demoulding and the deformation of parts is small. So many high quality products in the market are produced by hot runner die. For example, many plastic parts in the familiar Motorola mobile phone, HP printer and Dell notebook are made by hot runner die.

5. Eliminating the subsequent processes is conducive to production automation.

The finished product is finished after the hot runner mold is formed. There is no need to trim the gate and recycle the cold runner. It is conducive to production automation. Many foreign manufacturers combine heat flow path with automation to greatly improve production efficiency.