What are the small details of plastic injection mold processing?

Plastic injection molding speed classic adjustment method:

The first section: straight rubber mouth cross rubber mouth parts, using medium and high speed

The second stage: Low speed is used near the injection port to press the jet grain and silver grain

The third section: In order to prevent flow marks, melt joints and adopt high speed

The fourth stage: In order to reduce gas burning and blowing, it can correctly switch to the pressure holding position using medium speed and low speed.

The role of plastic injection screw

The screw has the functions of conveying, mixing, venting, dehumidifying, melting and measuring the raw material.

70% of the heat required for the melting of plastic raw materials is from the friction heat caused by the rotation of the screw, and 30% is from the heat added

 by the electric heating sheet.

Low viscosity, small screw, melt speed to speed up. High viscosity, large screw melt speed to slow down. Composite materials need to slow down the speed.