Method and apparatus of judging quality of injection molded prod

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

264 406, 425135, 425144, 425149, 425170, B29C 4577, B29C 4578

Patent

active

050173154

ABSTRACT:
The quality that is good or bad of an injection molded product is judged. The temperature T of a metal mold, of a resin in the mold cavity, barrel or nozzle of an injection molding machine is measured at a time t elapsed after comencement of a pressure holding step of the injection molding machine. The present P of resin in the mold cavity or barrel or nozzle is measured at the time t, and a time function A=f(t) is calculated using the temperature T and the pressure P, where A represents a calculating parameter T/P, P/T, T.times.P, T+P or T.+-.P. This is compared with a reference time function Ao=f(t) of a shot in which satisfactory products can be obtained, with a time function An=f(t) of another shot.

REFERENCES:
patent: 3807914 (1974-04-01), Paulson et al.
patent: 3932083 (1976-01-01), Boettner
patent: 4208176 (1980-06-01), Salerno
patent: 4240996 (1980-12-01), Hunkar
patent: 4311446 (1982-01-01), Hold et al.
patent: 4326255 (1982-04-01), Fujita
patent: 4680151 (1987-07-01), Fujita et al.
patent: 4740148 (1988-04-01), Fujita et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus of judging quality of injection molded prod 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 and apparatus of judging quality of injection molded prod, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus of judging quality of injection molded prod will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-236303

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.