Precision injection molding production

What about precision injection molding

Precision injection molding is the most demanding technology in the production of plastic products. Precision molds need to be used and precision machinery.
Precision injection molding is necessary for the development of precision plastic parts with complex geometry
that can replace high-precision metal parts for various industrial applications. Therefore, Precision injection molding is the most expensive and complex leader technology performance in the market.
It is only used in the manufacturing process of special product requirements when product development requires. It needs an unusually precise form of plastic injection molding. The accuracy of the parts is large the degree depends on the precision injection mold and whether it is suitable for design engineering requirements.

Process flow difference between Precision injection molding and the common plastic molding 

The characteristics are: the size of the injection molded parts with high precision, small tolerance.

To achieve the requirements of precision injection conditions must be met:

(1) the mold material is better, rigid, cavity dimension precision and template between positioning accuracy are higher, lower surface roughness.

(2) to adopt a precision plastic molding machine.

(3) to adopt a precision molding process.

(4) to choose suitable for precision injection molding process of the material. Commonly used precision molding materials have several: POM, POM = CF (carbon fiber), PNM = GF (glass fiber), PA \ FRPA66 (enhanced PA), PC, etc.

the Precision injection process can ensure the size, that it is the important way to control the shrinkage of injection molded parts, including thermal contraction, disguised contraction of molded parts, orientation and compressed contraction and elastic recovery.

Common injection molding features not high than precision injection molding, the size of injection molded parts are typical can be assembled into standard, requirements for the appearance of the injection molded parts is relatively high, if necessary, may use the second processing (oil, for example) to improve the appearance of defects. Ordinary injection molding don’t need to use special precision injection molding machine, also do not need to specially designated materials, general common thermoplastics can be used to produce. So ordinary injection molding technology is widely used in the modern plastic industry.

Innovative and Unique Tips and Tricks

In the process of precision injection molding, the raw material is pre-loaded into the box.
Automatic feeding (in the form of particles) to the injection molding machine hopper.
Melt the raw material in the barrel and inject the mold under high pressure.
The molten polymer is allowed to cool and solidify and is removed from the mold.
If necessary, using water to clean, dry with a hairdryer. Then they are shipped for packing inspection.

Medical supplies and equipment for precision semiconductors as well as data storage, consumer electronics, medical and automotive industries in the production of precision injection molding of other high precision plastic parts.

The various tonnage of automatic precision molding machine (from 80 to 650 tons), our products meet the customer’s strict size, functional and aesthetic requirements.
We also provide medical products, the formation of a non-dust production plant, clean the packaging of various products, molding parts without pollution risk.

Select a good precision injection molding machine

To buy a high precision injection molding machine, the impact of  machine selection factors include the following:
1 Mold size (length * width * height), weight, special design
2 Kinds of plastics (pure or many kinds of plastics)
3 Injection product size (L, W, H, thickness), weight and so on.
4 Molding requirements: such as quality conditions, production speed, etc….

According to the above information, you can choose the machine that suits you.
First, select the type of product and plastic material
Second, the mold can be placed on the machine, to determine the size of the tie, the height of the mold, the minimum size of the mold is appropriate.
Third, you can take out the product.
The switch trip is more than two times the height of the opening and closing of the product.
The jet’s journey is enough to spray the product.
Fourth, the clamping tonnage is determined by the plastic materials and products.
Fifth, the weight of the injection depends on the weight of the product and the mold cavity.
Sixth. Injection speed: thin-walled products always require high injection speed.

Compared with the traditional technology, Cn-moulding has higher precision injection molding and more perfect performance, which is often supplied to electronic information engineering, medical devices, packaging, cars, machinery, hardware, apparatus，timepiece industry, weapons, and aerospace, etc. Therefore, it will become a revolution between parts molding and processing.