Select Preform Mold: Start with Recognizing Hot Runner Nozzles

What influences the choice of hot runner nozzles? I learned a little about the following: product quality, product design, plastic raw materials, molds, cycle times, gates, nozzles, runners, temperature controllers, and injection molding machines. Performance and so on. When we have a very accurate understanding of these, we can choose the right hot runner nozzle for it. The following brief introduction of those elements:

1, the weight of the product: different weight of the product on the hot runner requirements are completely different.

2. Plastic raw materials: Different German plastic raw materials have different processing variables, and those processing variables will affect the choice of hot runner system.

3, mold: like the number of cavity is how much? What is the nozzle distribution distance? What kind of material is processed? Etc. These are the mold elements associated with the optional hot runner system.

4, the cycle: a rapid production cycle means that the nozzle requirements increase. For example, the nozzles must transfer heat accurately and be durable.

5. Gate: For point gates, in order to maintain good thermal balance during each molding cycle, the tip of the heat flow must have the function of melting the material and cooling the seal. The valve gate uses a mechanical method to seal the gate.

6. Nozzles: Nozzles can generally be distinguished based on size, temperature distribution, physical properties, materials used (copper, steel, etc.), and ease and price of maintenance.

7, runners: the use of hot runner system to avoid the production of material, which not only saves raw materials, but also eliminates the need to manually, manually or other methods to remove the material handling process.

8, temperature control: Each nozzle must be connected with a relatively complex temperature controller

9, the performance of injection molding machine: to be able to install a given size of the mold, to provide adequate clamping force, according to the requirements of the cycle time to operate, plasticizing enough material, etc.

10. Product Design: In general, we all know that product design is done first, but the final molding is done in the hot runner mold. In order to ensure that there is a smooth product appearance at the end of the molding and it is easy to eject the mold, it is necessary to consider those factors in the structural design of the product.