Patent · US Expired

Method for continuously straightening thin metal strips

US4819470A · kind A · utility

8Cited by

8References

5Claims

0Family size

Assignee

BWG BERGWERK—UND WALZWERK—MASCHINENBAU GMBH

Inventors

Oskar Noe
Rolf Noe · Mülheim, DE
Andreas Noe · Kerken, DE
Hermann Koppers · Duisburg, DE

Key dates

Filing date	Dec 28, 1987
Grant date	Apr 11, 1989
Priority date	—
Expiry date	Dec 28, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21D1/05
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method of continuously straightening metal strip comprises directing the strip over devices which act on the strip to effect its straightening by first causing a stretching and leveling and thereafter stretching and bending. The device for continuously straightening the thin metal strip comprises a plurality of entrance rollers arranged in succession at an entrance portion and a plurality of delivery rollers arranged in succession at a delivery portion with a stretching and bending device arranged between the two portions. The metal strip is guided over the entrance and delivery rollers as the rollers are driven by a drive motor and a common device member driven by the motor. At least two of the entrance rollers and at least two of the delivery rollers are tensioning rollers. A differential is included in the drive of each tensioning roller and it includes an overdriving motor with an adjustable speed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.