Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1996-04-23
1998-04-14
Heitbrink, Tim
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
264 407, 425145, 425149, B29C 4577
Patent
active
057388091
ABSTRACT:
A primary injection stroke of a trial shot, which precedes a continuous molding operation, is performed with a pressure regulating value maintained constant by speed feedback control from initiation of the primary injection stroke until a measured value of pressure reaches the pressure regulating value and, after the measured value of pressure has reached the pressure regulating value, the speed feedback control is switched to pressure-priority control under an open loop control and the primary injection stroke is performed up to a dwell pressure change-over point. An entire range of a primary injection stroke of the continuous molding operation is then performed by speed feedback control while using, as target speed data in the primary injection stroke of the continuous molding operation, a pattern of speed values measured during the primary injection stroke in the trial shot upon confirmation of molding of a non-defective product.
REFERENCES:
patent: 4695237 (1987-09-01), Inaba
patent: 5195029 (1993-03-01), Murai et al.
patent: 5275768 (1994-01-01), Inaba et al.
patent: 5296179 (1994-03-01), Kamiguchi et al.
patent: 5350546 (1994-09-01), Takeuchi et al.
Hara Keisuke
Miyamoto Shiro
Heitbrink Tim
Tokyo Machinery & Metal Co., Ltd.
LandOfFree
Injection control method for injection molding machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Injection control method for injection molding machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection control method for injection molding machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-632381