Controller for injection molding machine

Details Controller for injection molding machine Controller for injection molding machine

2006-05-19

2008-12-09

Heitbrink, Tim (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

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

Temperature control

C425S145000

Reexamination Certificate

active

07462025

ABSTRACT:
There is provided the torque limiter for limiting a torque command to be output when pressure feedback control of the pressure holding step is performed. After the start of the pressure holding step, the torque limiter limits output torque of the servomotor for injection for a predetermined time period after the screw starts to move backward. As a result, the output torque in the backward direction of the screw is limited and reduced, whereby the speed of backward movement of the screw is reduced, and decrease of the pressure applied to the resin becomes moderate, thus abrupt drop of the pressure can be avoided.

REFERENCES:
patent: 5030395 (1991-07-01), Kamiguchi
patent: 5620646 (1997-04-01), Sparer et al.
patent: 7313967 (2008-01-01), Uchiyama et al.
patent: 0364599 (1990-04-01), None
patent: 59-224324 (1984-12-01), None
patent: 01226319 (1989-09-01), None
patent: 01228821 (1989-09-01), None
patent: 1228821 (1989-09-01), None
patent: 01288419 (1989-11-01), None
patent: 04-329113 (1992-11-01), None
patent: 5057773 (1993-03-01), None
patent: 08-281729 (1996-10-01), None
patent: 09-220740 (1997-08-01), None
patent: 11-188763 (1999-07-01), None
patent: 2001252957 (2001-09-01), None
patent: 2002028960 (2002-01-01), None
patent: 2003-326573 (2003-11-01), None
Notice of Reasons for Rejection (Office Action) in corresponding Japanese Patent Application No. 2005-162534, mailed Jul. 24, 2007.
European Search Report dated Sep. 22, 2006 for related European Patent Application No. 06 25 2246.

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