Title:
STEEL SHEET WARPAGE STRAIGHTENING DEVICE
Document Type and Number:
Japanese Patent JP3238290
Kind Code:
B2
Abstract:
PURPOSE: To provide a warpage straightening device for a steel sheet by effectively straightening the warpage of the steel sheet even if the steel sheet is thin.
CONSTITUTION: Plural pieces of electromagnets 1, 2, 3 are disposed along the transverse direction of the steel sheet apart specified intervals on both upper and lower sides of the traveling steel sheet 60 formed to a strip shape. The warpage of the steel sheet is so straightened that the respective parts in the transverse direction of the steel sheet are aligned to a reference position B of the traveling path by controlling the attraction force of these electromagnets by an excitation controller 14. The device has an actuator for turning the electromagnets 1 arranged at the transverse ends of the steel sheet around the turning shaft disposed in parallel with the traveling direction of the steel sheet and a parallel detecting means for detecting whether the attraction surfaces of the electromagnets 1 are in a parallel state with the surfaces at the transverse ends of the steel sheet or not. This parallel detecting means has a turning controller 21 for outputting a turning command to this actuator before the parallel detecting means detects the parallel state.
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Inventors:
Hiroki Ueda
Minoru Kato
Kazuhiko Gondo
Shoji Nakamura
Minoru Kato
Kazuhiko Gondo
Shoji Nakamura
Application Number:
JP25083694A
Publication Date:
December 10, 2001
Filing Date:
October 17, 1994
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
B21D1/05; C21D11/00; C23C2/20; C23C22/73; (IPC1-7): C23C2/20
Domestic Patent References:
| JP530148U |
Attorney, Agent or Firm:
Toshio Yasuda