Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling rate of movement of molding material or its...
Patent
1996-04-17
1998-03-03
Heitbrink, Tim
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling rate of movement of molding material or its...
425145, 425149, 425150, B29C 4577
Patent
active
057230790
ABSTRACT:
A method for controlling the injection speed of injection molding machines and an apparatus therefor in which a driving force for forwardly moving an injection plunger movably inserted in an injection cylinder is detected by a first detector; when the value PA detected by the detector exceeds a standard value PSH, the forwardly moving speed of the plunger is controlled to be reduced in accordance with a moving speed reduction control profile VD which is determined by a predetermined decreasing function: further, the forwardly moving speed of the plunger at the dwelling phase switching position is detected by the second detector; the judgment that the value VS detected by the second detector exceeds the upper limit VAH and/or the judgment that the value VS exceeds the lower limit VAL is/are conducted; an alarm signal is outputted when the value VS exceeds the upper limit and/or the value VS exceeds the lower limit.
REFERENCES:
patent: 4135873 (1979-01-01), Sone et al.
patent: 4734025 (1988-03-01), Kawamura et al.
patent: 5008052 (1991-04-01), Harada
patent: 5445773 (1995-08-01), Arai
Fujita Shigeru
Harada Susumu
Heitbrink Tim
Toshiba Machine Co. Ltd.
LandOfFree
Method for controlling the injection speed of injection molding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for controlling the injection speed of injection molding , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for controlling the injection speed of injection molding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2245285