Injection molding machine which carries out controlling of...

Details Injection molding machine which carries out controlling of... Injection molding machine which carries out controlling of...

2007-12-14

2010-02-02

Heitbrink, Tim (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

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

Feed control of material en route to shaping area

C425S149000

Reexamination Certificate

active

07654810

ABSTRACT:
While a check ring of a screw of an injection molding machine is in open state, an absolute value (|Δ resin pressure/Δ rotation amount|) of a variation of a resin pressure per unit variation of the screw reverse rotation becomes greater than a predetermined reference value. However, after the check ring is closed, |Δ resin pressure/Δ rotation amount| becomes equal to or less than the reference value. From this, detecting if the |Δ resin pressure/Δ rotation amount| during reverse rotation of the screw, it is possible to determine that the check ring is closed or not. As a result, it is possible to obtain a screw reverse rotation amount which is optimal for reliably closing the check ring.

REFERENCES:
patent: 7037452 (2006-05-01), Speight
patent: 7431870 (2008-10-01), Speight
patent: 478380 (1972-03-01), None
patent: 60-201921 (1985-10-01), None
patent: 62-019423 (1987-01-01), None
patent: 62-060621 (1987-03-01), None
patent: 03-045325 (1991-02-01), None
patent: 04-071817 (1992-03-01), None
patent: 04201225 (1992-07-01), None
patent: 09-174629 (1997-07-01), None
EP Search Report for 07123269.8 dated Oct. 15, 2008.

Affiliated with

Also associated with

Rating

Injection molding machine which carries out controlling of... 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 molding machine which carries out controlling of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection molding machine which carries out controlling of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4165604