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Haichen injection plastic molding machine screw
Structure and Function
Feeding section (feeding section) :
The depth of the screw groove is fixed and it is responsible for conveying solid plastic particles and preheating them.
Crystalline plastics (such as polyolefins) require longer feeding sections to enhance conveying stability.
Compression section (melting section) :
The depth of the screw groove gradually decreases.
The plastic is melted through shearing and heating, while venting and pressing the physical material.
The compression section of the gradient screw accounts for 50% of the total length and is suitable for heat-sensitive plastics (such as PVC).
The compression section of the mutant screw only accounts for 5% to 15%, which is suitable for high-crystallinity plastics (such as PA).
Homogenization section (Metering section) :
The depth of the screw groove is fixed to ensure uniform melt temperature and stable output.
Insufficient length of the metering section will lead to uneven plasticization, while excessive length may cause thermal decomposition.
| Picture | Item | material | Machine |
|
screw | steel |
injection molding machine |
The actual area of BAI used in template. The larger the distance between pull rod and pull rod, the larger the actual width and zhi height of du na will be.
Because the injection molding machine needs to install the plastic injection mold between the moving and fixed formwork before it can be processed plastic products.
And in order to put the mold into the two formwork, must pass through the adjacent two pull rods, so the mold's external size must be less than the pull rod spacing.
Moreover, the space for placing the feeder and chiller should be reserved.
The spacing should be determined according to the actual situation. When Enzez injection molding machine sends goods to customers.
It will first place the injection molding machine according to the above two points and measure the distance.
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