Squeeze pin control system in die casting machine
US5787963A · kind A · utility
6Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D27/11
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of precisely controlling the stroke of movement of at least one squeeze pin in a die casting machine, which pressurizes locally the molten metal charged into a cavity of a metal mold. The method comprises detecting a flow rate of the pressure oil at the back pressure side of a squeeze pin cylinder which drives the squeeze pin of the die casting machine, calculating the stroke of the squeeze pin on the basis of the detected flow rate, and controlling the stroke of the squeeze pin toward a target value with the detected flow rate as a parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.