Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Reexamination Certificate
2006-04-18
2008-10-07
Heitbrink, Jill L (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
C425S145000, C425S156000
Reexamination Certificate
active
07431870
ABSTRACT:
A method for the automated setting-up of an injection molding machine, the machine for manufacturing injection molded parts and including an injection screw and a configurable injection velocity, including the steps of: manufacturing one of more parts with the machine; determining an injection pressure profile by measuring injection pressure as a function of elapsed injection time with the machine configured with a substantially constant, desired injection velocity; measuring injection velocity as a function of elapsed injection time and determining a profile of the measured injection velocity; defining a mean pressure profile from the pressure profile in a regime of substantially constant measured injection velocity profile; adjusting the velocity profile over at least a portion of an injection velocity phase in response to the pressure profile to reduce differences between the pressure profile and the mean pressure profile, thereby tending to lessen irregularities in the pressure profile.
REFERENCES:
patent: 3767339 (1973-10-01), Hunkar
patent: 3860801 (1975-01-01), Hunkar
patent: 3889849 (1975-06-01), Chandler, Jr.
patent: 3941534 (1976-03-01), Hunkar
patent: 4311446 (1982-01-01), Hold et al.
patent: 5062784 (1991-11-01), Inaba et al.
patent: 5470218 (1995-11-01), Hillman et al.
patent: 5500166 (1996-03-01), Sasaki et al.
patent: 5518671 (1996-05-01), Takizawa et al.
patent: 5639487 (1997-06-01), Wurst et al.
patent: 5898591 (1999-04-01), Hettinga et al.
patent: 5900259 (1999-05-01), Miyoshi et al.
patent: 0233548 (1987-02-01), None
Rosato et al., “Injection Molding Handbook”, Second Edition, Chapter 7, 1995, pp. 512-580, and Chapter 11, pp. 813-862.
Canadian Examination Report issued Mar. 27, 2006.
Buchanan & Ingersoll & Rooney PC
Heitbrink Jill L
Moldflow Pty. Ltd
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