Hot-runner plastic injection molding system
US4726751A · kind A · utility
24Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1985 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Dec 30, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2748
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a hot-runner plastic injection system, part of a resin passage connecting the nozzle of an injection molding machine and cavities of a mold adjacent to each of the cavities is formed of a tubular member of material which can be heated by high frequency induction heating. High frequency induction heating windings are wound around the tubular members and are connected to a high frequency power source in series with each other. There is provided a temperature controller for controlling the temperature of the tubular members by controlling the power to be supplied to the heating windings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.