Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Patent
1994-08-11
1996-04-09
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
2643289, 425564, 425566, B29C 4523
Patent
active
055056130
ABSTRACT:
The injection nozzle has a thin-walled centering bushing inserted between the tip insert and the mold insert. The centering bushing engages a shoulder of the mold insert and thus achieves a mutual centering and sealing of the tip insert and the mold insert. This avoids the inflow of molding material into the cavity between the tip insert and the mold insert which would impair or delay the changing of colors of the material, and the injection needle is effectively centered so that a cylindrical tip portion can close a very short cylindrical portion of a gate bore. The heat transfer between the heated nozzle parts and the mold insert is nevertheless maintained at a low level since the mutual centering is obtained by narrow contact sites.
REFERENCES:
patent: 4312630 (1982-01-01), Travaglini
patent: 4652230 (1987-03-01), Osuna-Diaz
patent: 5098280 (1992-03-01), Trakas
patent: 5183209 (1993-02-01), Ricco et al.
Apparate-und Werkzeugbau AG
Heitbrink Tim
LandOfFree
Injection molding nozzle having a centering bushing 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 nozzle having a centering bushing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection molding nozzle having a centering bushing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-135157