Linear drive for an injection molding machine
US7004742B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2004 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Nov 3, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/5028
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A linear drive for an injection molding machine includes a housing defining a sealed interior space containing a gas volume. The housing has two housing portions constructed for telescopic movement within one another. A spindle drive is accommodated in the housing and operated by the electric motor. The spindle drive includes a spindle shaft, which is axially securely fixed to one of the housing portions, and a spindle nut, which is arranged on the spindle shaft and axially securely fixed to the other one of the housing portions. Acting on the spindle drive is an energy accumulator which is constructed for discharge in a first operating cycle which is energy-intensive and for recharging in a second operating cycle which is opposite to the first operating cycle and requires little energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.