Injection molding apparatus

Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – Means permitting removal or substitution of elements during...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

425549, 425570, 425572, B29C 4522

Patent

active

045990646

ABSTRACT:
Apparatus for forming objects from molten material includes a mold frame and a movable mold side having complementary faces that define molding cavities. The mold frame includes a mold housing having an internally heated manifold which has a molten plastic distribution channel system for conducting molten plastic to injection nozzle passageways, each having a restricted discharge nozzle that discharges the plastic into a molding cavity. Within each injection nozzle passageway is a heater probe which has an internal heater, preferably an electrical cartridge heater. The probe is secured by an integral seating flange to the mold housing to hold the probe coaxially aligned in the injection nozzle passageway and to hold the probe against shifting with thermal expansion and contraction of the manifold. The integral rear flange is positioned in front of manifold block and has a connecting passageway that communicates the manifold distribution channel with the injection nozzle passageway. The electrical cartridge heater is substantially lower in cost than external electrical band heaters used heretofore for heating plastic flowing internally through a probe. To reduce heat transfer from the probe to the manifold, air pockets are formed into surfaces of the probe that interface with the manifold.

REFERENCES:
patent: 3189948 (1965-06-01), Whitney
patent: 4285659 (1981-08-01), Koike
patent: 4376244 (1983-03-01), Gellert
patent: 4422841 (1983-12-01), Alfonsi et al.
patent: 4438064 (1984-03-01), Tsutsumi
patent: 4501550 (1985-02-01), Nikkuni
UNITEMP Pamphlet (undated).

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

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

Rate now

     

Profile ID: LFUS-PAI-O-1449349

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