Multiple-slide die-casting system
US6938671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2004 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Jul 9, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/33
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multiple-slide die-casting machine is equipped with improved mechanical structure and unique injection control system to improve the quality of molded products, to achieve flash free castings of improved surface finish. The clamping assemblies are mounted on one side of a base plate of the machine for applying clamping force to the mold sections in a preloaded state. A reinforcement ring interconnects the clamping assemblies to inhibit deflection of the base plate and the brackets which support the clamping assemblies so that an accurate parting line between the contacting surfaces of mold sections is insured. The unique injection control system of the machine provides selectively closed loop and open loop injection to achieve the advantage of a closed loop control injection which provides for optimal parameters for an injection cycle to eliminate hammer effect, and the advantage of open loop which is suitable for die-casting small products requiring an injection stroke too short to be reacted on in closed loop control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.