Injection molding apparatus with heated valve member
US5106291A · kind A · utility
Inventor
Key dates
| Filing date | May 22, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | May 22, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2875
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A valve gated injection molding system having an elongated valve member with an integral electrical heating element received in each nozzle to provide additional heat. An actuating mechanism engages the rear end of the valve member to reciprocate it between a withdrawn open position and a forward closed position. The valve member has a head which projects rearwardly from the nozzle. The heating element has an external terminal which extends outwardly from the head through a slot in a mounting sleeve. Thus, access for connection of an electrical lead to the moving terminal is provided between the fixed nozzle and the fixed cylinder of the actuating mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.