Injection molding apparatus having swiveling nozzles
US7704069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2005 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | May 22, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/253
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Injection molding apparatus has upper and lower mold halves that split along the center line of the parison cavity and the gate opening leading thereto. Each hot melt injection nozzle is received within a tubular insert cup having a reduced diameter tip that is seated within the gate opening. The cup is mounted to the lower mold half so as to remain secured thereto as the upper mold half opens and closes the mold. The base end of each nozzle has a swivel ball and socket relationship with the manifold block which supplies it with hot melt, while the tip end of each injection nozzle has a swivel ball and socket type interface with the interior front end of the insert cup, thus providing for dimensional variations in the parts of the tooling that arise during non-uniform thermal expansion and contraction thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.