How to make a high quality mold?

The manufacturing process of injection mold is a complex process, which requires design, processing, assembly, debugging and other steps before it can be put into use. .

1. Mold steel

Steel is the decisive factor for the quality of the mold, and the selection of reasonable steel is of great significance for the manufacture of injection molds. In general, the criteria for selecting steel are:

1. Requirements for mold materials

Different plastic products are processed with different steels to meet high polishing and corrosion resistance requirements.

2. Surface treatment of the mold

The surface treatment of the mold is very important. Nitriding treatment can continuously enhance the surface hardness of the steel and effectively prolong the service life of the mold. Electroplating can change the properties of mold steel to a certain extent, and is suitable for plastic parts that require high brightness and corrosion resistance. After electroplating, the injection mold can make full use of electroplating to enhance and improve the performance of steel.

2. Structural design

A mature mold design structure should not only consider the material properties, shrinkage rate, molding temperature and elastic tensile deformation coefficient of the product, but also fully consider the cooling water path of the mold and the speed of opening and closing the mold.

3. Mould processing

The processing technology of the mold is very important. A reasonable processing arrangement can speed up the production cycle, shorten the processing time, reduce the production cost, and create a cost-effective injection mold. If the processing is wrong, the mold may be welded, the quality is unqualified, and the life of the mold may be reduced.

4. Standard parts

The standard parts of the injection mold do not directly participate in the molding, but control the operation of the entire mold. A good standard part should have the characteristics of wear resistance, high precision and not easy to deform. In addition, the standard parts of different brands have different prices.

Five, touch (flying mold)

It is also called flying mold. It mainly relies on the experience of mold fitters for processing, which is the most technical work. For complex injection molds, the collision is very important and plays a role in determining the quality of the mold. For example, the collision of auto parts molds is very complicated, not only the shape of the fractal surface is irregular, but also often includes multiple sliders and tops. yuan. For a simple flat mold, it is only necessary to ensure that the fractal surface has no flash and breakage. In addition, the processing personnel can also improve and perfect other problems of the mold through the touch, which is a comprehensive work.


Post time: May-16-2022