Method for controlling injection molding machine
US4820464A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1985 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Jul 9, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/45244
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a nozzle pressing and contacting process, a mold clamping process, and an injection process in an injection molding operation, a movable side, such as constituting a nozzle portion or screw of an injection apparatus, or a movable mold of a molding apparatus, is moved towards and contacted with a stationary side, such as constituting a mold or molding machine, or a stationary mold under a speed controlled condition. When the movable side approaches the stationary side, the pressure acting on the stationary side is measured and when the measured pressure reaches a predetermined set pressure, the speed control is switched to a pressure control to accurately and smoothly bring the movable side into contact with the stationary side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.