Patent · US Expired

Coiling reel

US4955553A · kind A · utility

2Cited by

3References

3Claims

0Family size

Assignee

BWG BERGWERK—UND WALZWERK—MASCHINENBAU GMBH

Inventors

Oskar Noe
Rolf Noe · Mülheim, DE
Andreas Noe · Kerken, DE
Herbert Lux · Heidenheim, DE

Key dates

Filing date	Aug 14, 1989
Grant date	Sep 11, 1990
Priority date	—
Expiry date	Aug 14, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21C47/30
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A reel for coiling and uncoiling metal strips includes an expanding mandrel which is actuated by a spreader cylinder. The expanding mandrel is driven by a drive motor with a control and computing unit for determining the outer diameter of the coil at any given time. The outer diameter is introduced into a microprocessor which determines the initial spreading pressure and the winding pull to be maintained. The winding pull to be maintained is introduced into the control and computing unit. The microprocessor further determines, in dependence on the outer diameter of the coil, the required spreading pressure which is generated in the spreading cyclinder. As a result, the expanding mandrel always operates with a spreading force which is dependent upon the outer diameter of the coil at any given time, so that overloading is eliminated and wear is substantially reduced.

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