Cause analysis of raw edge problem in injection mold

Injection mold molding burr problem cause analysis, injection mold burr main problem can be considered from the injection process, injection molding equipment and injection mold three aspects. Of course, raw materials will also have a certain impact. The fluidity of raw materials is too good and too much raw material additives will also cause rough edges of injection products.

In terms of injection molding process, the raw edge of injection mold may be caused by excessive injection amount, excessive injection pressure and speed, excessive pressure holding for too long, or too high melt temperature. The high temperature of injection molding machine barrel, nozzle or mold will lead to the decrease of plastic viscosity, the increase of plastic fluidity, and also lead to the parting surface burr.

For injection molding equipment, injection molding molding burr may be caused by the deformation of the Golin column or the lock force is too small; The parallel of the injection mold itself is poor or not parallel when loading the mold, may lead to the closing of the mold is not tight, parting surface burr; The mold closing device is not adjusted properly, the mold is not parallel, and the rough edge of the parting surface will appear when injection.

In the case of injection mold, injection mold molding burr may be caused by poor matching of parting surface, poor matching of molding parts or insufficient rigidity of the mold; Injection mold accuracy is poor. The difference in the flatness of the die core leads to the gap and the rough edge of the parting surface.

The uneven size of plastic particles will make the filling amount of the barrel change, and there will be rough parting surface. The mission of Fanstar is to master the core technology of injection molding production, communicate and analyze the technology before mold production with customers from the production needs of finished products, so that the mold delivery time is short, the life is long, the mass production is fast and the finished product quality is excellent! Have the need of injection molding mold welcome to contact us!