Method and apparatus for the rapid delivery of heavy plates from a rolling mill

Patent metadata

Field	Value
Publication number	US-2016101450-A1
Application number	US-201414893098-A
Country	US
Kind code	A1
Filing date	Apr 2, 2014
Priority date	May 21, 2013
Publication date	Apr 14, 2016
Grant date	—

Abstract

A method and device for rapid discharging of metallic plates ( 21, 22 ) particularly thick plates, from a rolling mill, to enable secure discharge of relatively short plates ( 21, 22 ) from the rolling mill at high velocity and low cycle times by transporting a first plate ( 21 ) on a roller bed ( 9, 13 ) in the transport direction (T), and preferably the first plate ( 21 ) is accelerated in the transport direction (T); depositing the first plate ( 21 ) on the roller bed ( 9, 13 ); transporting a second plate ( 22 ) on the roller bed ( 9, 13 ) in the transport direction (T); depositing the second plate ( 22 ) in the transport direction before the first plate ( 21 ) on the roller bed ( 9, 13 ); and discharging the first and the second plates ( 21, 22 ) from the roller bed ( 9, 13 ) onto a storage ( 24 ), wherein the discharging occurs crosswise to the transport direction (T).

First claim

1 . A method for the delivery of metallic plates from a rolling mill, comprising the method steps:
transporting a first plate on a roller table in a direction of transport, and accelerating the first plate in the direction of transport; and storing the first plate on the roller table after the acceleration thereof; then transporting a second plate on the roller table in the direction of transport; and storing the second plate in the direction of transport in front of the first plate such that the second plate does not move past the first plate on the roller table; and concurrently delivering the first and the second plates from the roller table into a storage location.

2 . The method as claimed in claim 1 , further comprising:
transporting at least a third plate on the roller table in the direction of transport; and storing the third plate in the direction of transport in front of the second plate such that the third plate does not move past the second plate on the roller table; and concurrently delivering the first, second and third plates from the roller table into a storage location.

3 . The method as claimed in claim 1 , further comprising the delivering of the plates takes place transversely relative to the direction of transport.

4 . The method as claimed in claim 1 , further comprising:
using a lateral conveyor to perform the steps during the delivery by:
lifting the at least one plate from the roller table;
transporting the lifted plate transversely relative to the direction of transport from the roller table to the storage location;
storing the at least one plate at the storage location; and
returning the lateral conveyor to a start position for the lifting of a plate, such that the lateral conveyor can be used to again transport at least one plate.

5 . The method as claimed in claim 3 , further comprising:
performing the method steps during the delivery by:
gripping the at least one plate on the roller table by means of a gripper;
swiveling the gripper and the gripped at least one plate about a swiveling axis which is oriented parallel to the direction of transport;
then releasing the swiveled plate from the gripper and storing the plate at the storage location; and
then returning the gripper to a start position, such that the gripper can be swiveled to again deliver at least one plate.

6 . The method as claimed in claim 4 , further comprising lowering the storage location by at least a plate thickness after the storage of the at least one plate.

7 . The method as claimed in claim 1 , further comprising cutting the plates to a length before transporting the plates on the roller table in the direction of transport.

8 . An apparatus for delivery of plates from a hot-rolling mill, comprising:
a roller table for transporting a plate in a direction of transport, wherein the roller table comprises a plurality of driven rollers for accelerating the plate in a direction of transport; a storage device configured and operable for storing the plate on the roller table at a defined position on the table; a lateral conveyor configured and operable for concurrent delivery of a plurality of the plates, transversely relative to a direction of transport, from the roller table to a storage location transversely relative to the direction of transport, from the roller table to the storage location.

9 . The apparatus as claimed in claim 8 , further comprising the storage location comprises a limit stop and an actuator configured for moving the limit stop for the plate, the moving being into and out of a transport path of the plate on the roller table.

10 . The apparatus as claimed in claim 8 , further comprising the storage location comprises a table roller which can be braked.

11 . The apparatus as claimed in claim 8 , further comprising the lateral conveyor comprises a lifting rail positioned and configured for lifting the plates, a lift actuator for raising the lifting rail, and a traversing carriage for moving the plate then on the lifting rail transversely relative to the direction of transport.

12 . The apparatus as claimed in claim 11 , further comprising the lifting rail has a plurality of arms, wherein at least one table roller is arranged between two of the arms in a starting position of the transporting of a plate at the lifting rail.

13 . The apparatus as claimed in claim 8 , further comprising the lateral conveyor comprises a gripper for clamping to the plate, and a gripper swiveling unit configured for swiveling the plate about an axis of rotation which is oriented in the direction of transport.

14 . The apparatus as claimed in claim 8 , further comprising the storage location comprising a height-adjustable storage table; and
an actuator for adjusting the height of the storage table.

15 . A method for cooling a metal plate in a cooling section, wherein the cooling section comprises:
a roller table for transporting the plate in the direction of transport through the cooling section, the cooling section further comprising: at least one variable flow cooling nozzle configured for cooling the plate moving through the cooling section; at least one detector configured for determining a speed of the plate moving through the cooling section; and an adjustment device configured for setting a volume of coolant through the cooling nozzle; the method comprising the following method steps: transporting the plate through the cooling section; detecting the speed of the plate moving through the cooling section; supplying the detected speed to the adjustment device; and setting the volume of coolant through the cooling nozzle by the adjustment device as a function of the speed of the plate for causing the plate to be uniformly cooled.

16 . An apparatus for cooling a metal plate in a cooling section, comprising:
a roller table for transporting the plate in a direction of transport through the cooling section; the cooling section comprising: at least one speed detector located and configured for determining a speed of the plate moving through the cooling section; at least one variable flow cooling nozzle configured for uniformly cooling the plate moving through the cooling section; an adjustment device configured for setting a volume of coolant through the at least one cooling nozzle for the uniform cooling; the at least one speed detector and the adjustment device being configured for supplying the detected speed to the adjustment device; and the adjustment device being configured and operable for the adjustment device to set the volume of the coolant through the cooling nozzle as a function of the detected speed of the plate for causing the plate to be uniformly cooled.

17 . The method as claimed in claim 5 , further comprising lowering the storage location lowered by at least a plate thickness after the storage of the at least one plate at the storage location.

18 . An apparatus as claimed in claim 8 , further comprising a plurality of the internal conveyors configured and operable for delivering at least one of the plates transversely relative to the direction of transport from the roller table to the storage location.

Assignees

• Primetals Technologies Austria GmbH

Inventors

• Linzer Bernd
• Peitl Wolfgang
• Yang Bo
• Zahedi Michael

Classifications

• B21B39/02 Primary

  Feeding or supporting work; Braking or tensioning arrangements {, e.g. threading arrangements} · CPC title

• B21B39/00 Primary

  Arrangements 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 (guiding, conveying, or accumulating easily-flexible work in loops or curves B21B41/00; specially associated with cooling-beds B21B43/00; conveying or transporting in general B65G) · CPC title

• B21B13/22

  for rolling metal immediately subsequent to continuous casting, {i.e. in-line rolling of steel}(methods therefor B21B1/46; continuous casting B22D11/00, e.g. into moulds with rolls B22D11/06) · CPC title

• B21B45/0218

  for strips, sheets, or plates (B21B45/023, B21B45/0233 take precedence) · CPC title

• B21B1/463

  in a continuous process, i.e. the cast not being cut before rolling · CPC title