Correction Method for Warping Deformation of Injection Molding Parts with Ring Opening
The warping deformation was a common technical challenge in injection molding industry,which could be re-duced to a certain degree by improving product and mold design,and optimizing injection molding process.However,for some irregular parts,such as open ring injection parts,had a strong tendency to warpage deformation in the direction of un-supported opening,and simple design improvement and process optimization were difficult to meet the quality requirement after molding,so the correction after molding has become a necessary method.Aimed at a ring opening bushing special structure for automobile brake system,it was designed and manufactured that a kind of correction fixture with temperature regulation function,so the residual stress of the bushing was released on the fixture,and the heat transmitted to the fixture was discharged,which greatly reduced the warping deformation of the opening of the bushing,the opening deformation af-ter correction after 24 hours was reduced from-71.54％to-20％.This method solved the dimension deviation caused by deformation of the bushing after injection molding,and could realize quantity correction synchronously with injection mold-ing,which not only ensured product quality,but also improved production efficiency.
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维普
