Industry News

Injection mold composition and structure

Update:13-08-2019
Summary:

With the development of modern science and technology, […]

With the development of modern science and technology, injection mold design and manufacturing technology has made great progress. The advanced and professional mold parts have forced us to design faster and adapt to the development of the times. Let me introduce What are the components and structures of the mold.

1. Gating system
It refers to the part of the flow channel before the plastic enters the cavity from the nozzle, including the main channel, the cold material hole, the split channel and the gate.

2. molded parts system
It refers to the various parts and components that make up the shape of the injection mold, including dynamic mold, fixed mold and cavity (concave mold), core (protrusion), forming rod and so on. The core forms the inner surface of the article and the cavity (female) forms the outer surface shape of the article. After clamping, the core and cavity form the cavity of the mold. According to the process and manufacturing requirements, sometimes the core and the die are made up of several pieces, sometimes made into a whole, and only the inserts are used in the parts that are easily damaged and difficult to process.

3. Temperature control system
In order to meet the mold temperature requirements of the injection process, a temperature adjustment system is required to adjust the temperature of the mold. For injection molds for thermoplastics, the cooling system is primarily designed to cool the mold (the mold can also be heated). The common method of mold cooling is to open a cooling water channel in the mold, and use the circulating cooling water to remove the heat of the mold; the heating of the mold can be installed in and around the mold by using cooling water to pass hot water or hot oil. Electric heating element.

4. Guide system
It is to ensure that the movable mold and the fixed mold can be accurately centered during mold clamping, and guide members should be provided in the mold. In the injection mold, four sets of guide columns and guide sleeves are usually used to form the guide members, and sometimes the inner and outer tapered surfaces which are matched with each other are respectively arranged on the movable mold and the fixed mold to assist the positioning.

The above is the composition of the injection mold. As the technology continues to advance, the entire system is constantly updated, which requires our knowledge to continue to improve with the technology.