Basic principles and structure of injection molding machines

Injection molding machine, as an important plastic processing equipment, is widely used in multiple industries such as automotive, electronics, medical, packaging, etc. The basic principle is to heat the plastic raw material to a flowing state, then inject it into the mold to cool and solidify, and finally obtain the desired shape of plastic products.


The main structure of an injection molding machine includes an injection system, a mold clamping system, a hydraulic transmission system, and an electrical control system. The injection system is responsible for melting, measuring, and injecting plastics; The mold clamping system ensures the tight closure of the mold during the injection process; The hydraulic transmission system provides power for the injection molding machine; The electrical control system is responsible for the automated operation of the entire equipment.


The working process of an injection molding machine is roughly as follows: firstly, plastic raw materials enter the heated material cylinder through the hopper, and the screw inside the cylinder rotates to push the raw materials forward and heat and melt them. When the plastic reaches the set temperature, the screw moves forward and injects the melted plastic into the mold. The mold is tightly closed under the action of the mold closing system to prevent plastic from overflowing. After the injection is completed, the mold is cooled by the cooling system, and the plastic solidifies into shape. Finally, the mold is opened and the finished product is taken out.


Injection molding machine, as an important plastic processing equipment, is widely used in multiple industries such as automotive, electronics, medical, packaging, etc. The basic principle is to heat the plastic raw material to a flowing state, then inject it into the mold to cool and solidify, and finally obtain the desired shape of plastic products.


The main structure of an injection molding machine includes an injection system, a mold clamping system, a hydraulic transmission system, and an electrical control system. The injection system is responsible for melting, measuring, and injecting plastics; The mold clamping system ensures the tight closure of the mold during the injection process; The hydraulic transmission system provides power for the injection molding machine; The electrical control system is responsible for the automated operation of the entire equipment.


The working process of an injection molding machine is roughly as follows: firstly, plastic raw materials enter the heated material cylinder through the hopper, and the screw inside the cylinder rotates to push the raw materials forward and heat and melt them. When the plastic reaches the set temperature, the screw moves forward and injects the melted plastic into the mold. The mold is tightly closed under the action of the mold closing system to prevent plastic from overflowing. After the injection is completed, the mold is cooled by the cooling system, and the plastic solidifies into shape. Finally, the mold is opened and the finished product is taken out.

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