Injection molding introduction and What are the processes of the injection molding?

Today let`s see what is the injection molding and what are the processes of the injection molding as follows.

Following is the introduction about the injection molding:

Injection molding is the shear heat generated by the external heating and screw rotation of the plastic material in the barrel of the injection molding machine. After the resin material is plasticized into a melt, the melt is injected into a mold with a certain shape by applying a certain pressure. The product produced after cooling and shaping in the cavity is injection molding.

Let`s see the processes of the injection molding together:

The injection molding process can be roughly divided into the following six steps: mold closing, injection, pressure holding, cooling, mold opening, and product removal;

1. Rubber injection molding:

Rubber injection molding is a production method that injects rubber directly from the barrel into the mold for vulcanization. The advantages of rubber injection molding are: although it is an intermittent operation, the molding cycle is short, the production efficiency is high, the blank preparation process is canceled, the labor intensity is small, and the product quality is excellent.

2. Plastic injection molding:

Plastic injection molding is a method of plastic products. The molten plastic is injected into the mold of the plastic product under pressure, and cooled and formed to obtain various plastic parts. There are mechanical injection molding machines specially designed for injection molding. The most commonly used plastic today is polystyrene.

3. Molding and injection molding:

The resulting shape is often the final product and requires no further processing before installation or use as a final product. Many details, such as bosses, ribs, threads, can be formed in a single injection molding operation.

Shrinkage cavity, shrinkage, unsaturated mold, burr, weld line, silver wire, spray mark, burnt, warping deformation, cracking/breaking, dimension out-of-tolerance and other common injection molding problems Description, cause analysis, and in Mold Design, molding Solutions for process control, product design and plastic materials.