Screw backpressure controlling method in electric injection molding machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 23, 2007
Grant Date -
Aug 19, 2004
app pub date -
Jan 8, 2004
filing date -
Feb 13, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The electric injection molding machine comprises a sensor 21, servo motor 15, a motor 23 and a controller 30 and, in a plasticizing process in which the motor 23 is rotated, the controller 30 performs control by repeating a first process in which the rotation of the servo motor 15 is controlled by a first retreating speed command value 33 to make the screw 13 retreat at a low speed when a screw backpressure signal is smaller than a backpressure set value 31 and a second process in which the rotation of the servo motor 15 is controlled by a second retreating speed command value 34 to make the screw 13 retreat at a high speed when the screw backpressure signal is larger than the backpressure set value 31.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully