What are the main causes and adjustment methods of mold injection molding?
The main causes and adjustment methods of mold adhesion in injection molding are:
1) the gradient of the runner is too small or distorted, and it is easy to produce the adhesive mould.The gradient of the runner should be improved.
2) the plastic used is easy to stick to the mold.No impurity plastic should be used.
3) the material temperature, nozzle temperature and mold temperature are low, and the nozzle is not consistent with the sprue sleeve or the melt material is leaking between the nozzle and the mold, and it is difficult to remove the mold.At this time, the temperature of material temperature, mold temperature and nozzle should be raised, and the nozzle and gate sleeve should be adjusted to the same axis.When working, the nozzle should be closely adhered to the mold, leaving no gaps to prevent the melt overflow.
4) if the mold removal resistance is greater than the moving mode, the plastic parts will adhere to the mold, and sometimes the plastic parts will not be released.At this time, to properly repair the mold, polishing the cavity, or use good mold release agent.
5) replace the pull rod and make the pulling rod as reliable as possible.
6) improve the runner's strength or replace the new runner, making the gate diameter increase.