Continuous extrusion apparatus
US7980110B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Nov 12, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C23/085
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus for continuous extrusion of an aluminium sheathing free from imperfections or discontinuities onto a core cable, such as an insulated copper cable, includes a rotatable wheel formed with a pair of circumferential grooves arcuate tooling bounding radially outer portions of the respective grooves, a die body provided with divergent exit apertures discharging laterally to an extrusion chamber through 90° elbows and short divergent passages at diametrically opposed locations. An electrical induction heater includes coils of copper tubing connected to an electrical power source and to a coolant circulating device is positioned at a radially outer portion of the die body and is energizable to supply heat to the die body to maintain a uniform temperature of approximately 480° C., controlled by signals from thermocouples around the extrusion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.