Plastic injection molding nozzle with gas assist

Details Plastic injection molding nozzle with gas assist Plastic injection molding nozzle with gas assist

1991-04-09

1992-09-29

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

2643288, 26432813, 264572, 425564, 425573, B29C 4523

Patent

active

051512785

ABSTRACT:
An apparatus for injecting a viscous fluid such as a thermoplastic and a non-viscous fluid such as a gas into a mold cavity of a mold body includes a nozzle body having an inlet end, a discharge end and a flow passage for the viscous fluid extending from the inlet end to the discharge end. A valve element is mounted for reciprocation in the nozzle body flow passage to control the flow of the viscous fluid through the nozzle body discharge end. The valve element includes a barrel having a first end selectively engaging a portion of the nozzle body discharge end to prevent a flow of viscous fluid therepast and a second end. A bore extends longitudinally through the barrel. A pin is located in the barrel bore. The pin has a first end located adjacent to the barrel first end and a second end secured to the nozzle body such that the pin remains stationary as the barrel reciprocates in the nozzle body. A non-viscous fluid flow passage is defined between the pin and the barrel.

REFERENCES:
patent: 2940123 (1960-06-01), Beck et al.
patent: 4033710 (1977-07-01), Hanning
patent: 4082226 (1978-04-01), Appleman et al.
patent: 4106887 (1978-08-01), Yasuike et al.
patent: 4140672 (1979-02-01), Kataoka
patent: 4555225 (1985-11-01), Hendry
patent: 4657496 (1987-04-01), Ozeki et al.
patent: 4781554 (1988-11-01), Hendry
patent: 4905901 (1990-03-01), Johnson
patent: 5030076 (1991-07-01), Ebenhofer et al.
The Best of Two Worlds in Plastic Processing, Machine Design Magazine, Dec. 9, 1982, by Donald R. Dreger, Staff Editor.

Affiliated with

Also associated with

Rating

Plastic injection molding nozzle with gas assist does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plastic injection molding nozzle with gas assist, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plastic injection molding nozzle with gas assist will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1967192