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What are the main factors affecting the fault of carrier injection molding

Judging the injection molding of the bearing belt is based on the precision of the injection molding product, that is, the dimensional tolerance, the shape and position tolerance and the surface roughness of the product. To perform precision injection molding there must be many related conditions, and Z essence of these four basic factors.

When designing plastic products, engineering plastic materials should first be selected, and engineering plastics that can be precision injection molding must be selected for those with high mechanical properties, dimensional stability, good creep resistance, environmental resistance, dimensional accuracy, weight, quality requirements and the desired mold structure. In the process of processing, the factors affecting precision injection products mainly come from the precision of the mold and injection shrinkage.

In the carrier injection molding, the mold is one of the keys to obtain the carrier plastic products that meet the quality requirements, and the mold used for carrier injection molding should meet the requirements of the size, accuracy and shape of the product. However, even the international dimensions will not be consistent due to the difference between the shrinking stars. Therefore, effectively controlling the shrinkage rate of plastic products is very important in precision injection molding technology.

Whether the mold design is reasonable or not will directly affect the shrinkage rate of plastic products. Bearing belt because the mold cavity size is obtained by the plastic product size plus the estimated shrinkage rate, and the shrinkage rate is produced by plastic, it is not only related to the mold gate form, gate location and distribution, And it is related to the crystalline orientation (anisotropy) of engineering plastics, the shape and size of plastic products, the distance to the gate and the location.