Extrusion drive control system
US4437046A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1982 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Jun 18, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/9298
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extrusion drive control system for control of extrusion process machinery driven elements. A drive interface unit is adapted for use with any of a variety of drive motors and regulators. The interface unit accepts analog condition information signals from the drive motor and regulator, having any of a plurality of predetermined input characteristics, and provides corresponding digital signals having characteristics that are invariant with respect to the particular input characteristics. The interface unit has a communication channel for receiving digital control signals and for outputting digital signals indicating drive operating conditions. The low power digital circuitry and communications channel are protected from the high voltage and high power connections to the drive and drive regulator. Extrusion control means comprises the interface unit together with a drive control module, which permits input of control signals including speed set and ratio set, and permits display of at least one of the operating conditions. The drive control module has an internal data bus and a communications channel connected to the data bus and to the interface unit communications channel. For t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.