Nozzle hole sealing device for injection nozzle
US5505606A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1994 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Feb 3, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/232
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A nozzle hole sealing device for an injection nozzle capable of blocking a hole at the tip of a nozzle by using a robot in purging an injection molding machine. The nozzle hole sealing device includes a tool changer for connecting the nozzle hole sealing device to a wrist of the robot and a nozzle sealing body for sealing a nozzle hole by contacting the nozzle tip of the injection molding machine, thereby composing a nozzle sealing robot tool as a whole. A chuck mechanism for keeping a nozzle tip in contact with the nozzle sealing body, a heat reserving heater for a nozzle tip contact portion, and a resin passage ranging from the nozzle tip contact portion to a purged resin discharge surface including a constant pressure open value disposed in the middle of the passage may be further included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.