Injection molding apparatus for predicting deformation amount in

Details Injection molding apparatus for predicting deformation amount in Injection molding apparatus for predicting deformation amount in

1996-11-15

1998-09-22

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

264404, 264 407, 425149, 425555, B29C 4577

Patent

active

058111336

ABSTRACT:
A simulation system predicts a behavior of a molten resin in a mold in filling, packing, and cooling processes by using a fundamental equation formulated by the finite element method, and shrinkage factors in a direction of thickness and planar directions based on anisotropy of a volume shrinkage factor obtained during prediction of the filling, packing, and cooling processes, so that a warp deformation in an injection-molded article can be predicted at a higher precision. In this simulation system, the warp deformation is predicted by calculating the shrinkage factors in accordance with:

REFERENCES:
patent: 4833910 (1989-05-01), Kenmochi
patent: 5275768 (1994-01-01), Inaba et al.
patent: 5427516 (1995-06-01), Bader et al.

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