Locally pressurizing injection molding machine

Details Locally pressurizing injection molding machine Locally pressurizing injection molding machine

1993-09-29

1995-08-08

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With preform severing means movable relative to mold

264334, 425554, 425556, B29C 4540

Patent

active

054393710

ABSTRACT:
A locally pressurizing type injection molding machine includes a stationary die and a movable die, so that a molded product can be formed by charging a resin into a cavity defined between the dies. A pressurizing pin extends through the movable die and has its tip end facing at least one of a resin passage and the cavity. A pressurizing cylinder is disposed at the rear of the pressurizing pin to move the pressurizing pin through the pressurizing rod. Therefore, the resin charged in the cavity can be pressurized by advancing the pressurizing pin into a resin passage, for example, a gate, the cavity or the like and hence, it is possible not only to provide an extremely thin molded product, but also to prevent the generation of a sink mark. The area occupied by the movable platen can be reduced by disposing the pressurizing rod and ejector rod coaxially.

REFERENCES:
patent: 2330369 (1943-09-01), Marsh
patent: 4710124 (1987-12-01), Harrison
patent: 5074779 (1991-12-01), Tsutsumi et al.
Patent Abstracts of Japan, vol. 9, No. 316 12 Dec. 85 60-151013.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-967741