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Do you kown What is injection process?

TIME:2021-01-13 Share

Injection molding is a method to obtain molded products by injecting plastic materials molten by heat into a mold, and then cooling and solidifying them. The method is suitable for the mass production of products with complicated shapes, and takes a large part in the area of plastic processing.

What is the injection molding process?
Add the dried du plastic particles or zhi powder from the hopper to the barrel of the plastic injection molding machine.
It is heated to melt and plasticize, and then the molten plastic is injected into a mold with a lower temperature under high pressure through a plunger (or screw).
After cooling and shaping, the corresponding product can be obtained by opening the mold.

 injection molding machine
Injection molding is a continuous process, which can actually be divided into several steps, such as raw material drying, feeding, plastic melting, injection, holding pressure, part cooling, part demoulding, and part trimming.

The injection molding process takes the screw injection machine as an example. The mold is first closed and locked. The mold is quickly closed at low pressure through the mold clamping mechanism. When the movable template and the fixed template are about to approach, the movable template will advance at low pressure and low speed. After confirming that there is no foreign matter in the mold, close and lock the mold with high pressure. Then the injection system moves forward and injects and maintains pressure. After the mold is locked, the injection system moves forward to make the nozzle and the mold fit together. The screw advances quickly under the action of the injection cylinder piston, and the melt at the front end of the barrel is injected into the mold cavity at high pressure and high speed. Please communicate with us for specific words.

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