Different injection molded parts need to be made with different injection molds to meet different product requirements. Today, I want to introduce you to the relevant knowledge of injection molds. Do you want to know what are the classifications of injection molds? Follow the editor to continue watching!

 

Common types of injection molds are two-platen molds, three-platen molds, hot runner molds and right-angle injection molds.

 

One or two plate molds

 

The two-platen mold is the single parting surface injection mold. It is the simplest and most basic mold type. It has a wide range of applications. It can be designed as a single-cavity mold or a multi-cavity mold according to product requirements.

 

Two and three board molds

 

 

 

The three-plate mold is also the double parting surface injection mold, which is different from the single parting surface injection mold. In the fixed mold part, the three-plate mold of this mold is designed with a partly movable stripper plate. In this design, the runner will be ejected between the first and second plates, and the stripper plate will be ejected between the second and third plates, achieving the purpose of separating the parts and the runner. The double parting surface injection mold is not suitable for the molding of large injection parts, because it has the characteristics of complex structure, high manufacturing cost, and difficult parts processing.

 

Three, hot runner mold

 

The hot runner mold is similar to the traditional cold runner mold. The difference is that the hot runner mold directly injects the plastic into the cavity through the nozzle. There is no runner in the molding process, which greatly improves the utilization rate of raw materials and avoids waste. In general, the manufacturing cost of hot runner molds is higher than that of cold runner molds, but if the molded parts are very small, especially if the parts are smaller than the runner, the hot runner mold is a more economical choice.

 

 

 

Many mechanical principles are applied in the processing of hot runner molds, especially for multi-cavity molds, processing through hot runner molds can shorten the cycle time required for forming parts, which is suitable for mass production and can gain more The benefits.

 

Four, right-angle injection mold

 

The scope of application of right-angle injection molds is not very wide. It is only suitable for angle injection molding machines. Unlike other injection molds, during molding, the feed direction of the mold must be perpendicular to the opening and closing directions, and the cross-sectional area is usually unchanged. In addition, the sprue of the right-angle injection mold is set on both sides of the moving and fixed mold parting surfaces. At the end of the sprue, in order to prevent the injection molding machine nozzle and the inlet end of the sprue from wearing and deforming, replaceable The runner inserts.

 

 

 

The basis for the success of a project is the choice of mold type. Under normal circumstances, professional mold engineers will comprehensively consider all factors, including part design, volume, molding environment, installation system, resin usage, and customer specific needs, etc., and finally select Suitable mold type.