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1. US20150128675 - Roller leveler and plate flattening method using the same

Office
United States of America
Application Number 14396198
Application Date 08.04.2013
Publication Number 20150128675
Publication Date 14.05.2015
Grant Number 09387526
Grant Date 12.07.2016
Publication Kind B2
IPC
B21B 1/24
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
22for rolling bands or sheets of indefinite length
24in a continuous process
B21B 37/28
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
37Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
28Control of flatness or profile during rolling of strip, sheets or plates
B21D 1/05
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
1Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
05Stretching combined with rolling
B21D 1/02
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
1Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
02by rollers
B21B 27/02
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
27Rolls; Lubricating, cooling or heating rolls while in use
02Shape or construction of rolls
B21B 35/00
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
35Drives for metal-rolling mills
CPC
B21B 1/24
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section
22for rolling ; plates, strips,; bands or sheets of indefinite length
24in a continuous ; or semi-continuous; process
B21B 27/021
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
27Rolls, ; roll alloys or roll fabrication
02Shape or construction of rolls
021Rolls for sheets or strips
B21B 27/032
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
27Rolls, ; roll alloys or roll fabrication
02Shape or construction of rolls
03Sleeved rolls
032Rolls for sheets or strips
B21B 35/00
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
35Drives for metal-rolling mills ; , e.g. hydraulic drives
B21B 37/28
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
37Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
28Control of flatness or profile during rolling of strip, sheets or plates
B21B 39/008
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
39Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
008Rollers for roller conveyors
Applicants JP STEEL PLANTECH CO.
Inventors Keizo Abe
Toru Aoyama
Toru Sano
Agents Oblon, McClelland, Maier & Neustadt, L.L.P.
Priority Data 2012101004 26.04.2012 JP
Title
(EN) Roller leveler and plate flattening method using the same
Abstract
(EN)

A roller leveler includes: a leveling roll unit having a plurality of leveling rolls configured to rotate so as to pass a plate while sandwiching and pressing the plate; a pushing cylinder provided at each of an entrance side and a discharge side of the leveling roll unit, at which the plate enters and is discharged, respectively, and configured to press the plate via the leveling rolls; and a driving mechanism configured to rotate the leveling rolls to pass the plate. At least one of the plurality of leveling rolls has a stepped structure, including a lateral center portion with a large diameter, corresponding to a center portion of the plate with respect to a plate width direction, and lateral end portions with a small diameter, corresponding to edge portions of the plate with respect to the plate width direction.