EP1556178A1 - Low-friction bending system in a roll stand comprising several rolls - Google Patents

Low-friction bending system in a roll stand comprising several rolls

Info

Publication number
EP1556178A1
EP1556178A1 EP03807758A EP03807758A EP1556178A1 EP 1556178 A1 EP1556178 A1 EP 1556178A1 EP 03807758 A EP03807758 A EP 03807758A EP 03807758 A EP03807758 A EP 03807758A EP 1556178 A1 EP1556178 A1 EP 1556178A1
Authority
EP
European Patent Office
Prior art keywords
bending
roll
stand
roll stand
vertical positioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03807758A
Other languages
German (de)
French (fr)
Other versions
EP1556178B1 (en
Inventor
Wolfgang Denker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1556178A1 publication Critical patent/EP1556178A1/en
Application granted granted Critical
Publication of EP1556178B1 publication Critical patent/EP1556178B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/106—Vertical displacement of rolls or roll chocks during horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/025—Quarto, four-high stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws

Definitions

  • the invention relates to a device for bending the rolls in a multi-roll mill stand with bending blocks which can be acted upon by actuating means and are fastened on the inlet and outlet sides between the roll chocks and the stator windows.
  • Generic devices are used for flatness control of a rolled product as an actuator for work roll bending.
  • the actuator has a direct influence on the roll gap geometry in the strip edge area, the work rolls being bent positively around the edges of the rolls above and negatively bent around the edges of the rolling stock.
  • German patent specification 22 50 953 is a roll stand with work and support rolls and a roll bending device, in which the chocks of the work rolls are guided between blocks anchored in the stand windows and to act upon the work roll bale correction by piston cylinders which can be loaded on both sides and assigned to the blocks -Units connected are known, with a lower and an upper guide piece being guided vertically displaceably on each block, whereas one guide piece receives the cylinder and the other guide piece is connected to the piston, and the guide pieces with the chocks by horizontal guides in the vertical direction in a form-fitting manner are connected, which are continued parallel to the rolls for the roll change between the stands. In this way it should be achieved that two piston-cylinder units are required on each side for the roll bending.
  • the object of the invention is to reduce the frictional forces in a generic system.
  • the bending blocks of the one roll stand be assigned a piston cylinder and the bending blocks of the opposite roll stand a vertical positioning device.
  • a pivot point can be created around which the chock can be pivoted. Only one cylinder is required to introduce the bending force on the drive and operator side into the bending blocks.
  • the grinding range of the rollers can also be compensated for by the screw jack.
  • the device according to the invention can also be used for intermediate roll bending in a six-roll stand. Use in reversing roll stands is also conceivable.
  • Figure 1 is a side view section of a four-high rolling mill from the
  • FIG. 2 is a plan view of the work roll level of the roll stand from FIG. 1.
  • a roll stand 1 the work rolls 3, 3a are supported by the support rolls 2, 2a.
  • the chocks 4, 4a of the work rolls are connected to the roll stand 6, 6 'via the bending blocks 5, 5a, 5', 5a '.
  • a screw jack 10 is arranged between the bending blocks 5 'and 5a' and can be positioned and locked via a drive 12.
  • the bending blocks 5 and 5a are connected via a piston cylinder 7, the piston 9 of which is mounted in the bending block 5a, while its connecting rod 8 is mounted in the bending block 5.
  • the bending blocks 5, 5a, 5 'and 5a' can be connected to the chocks 4, 4a of the work rolls 3, 3a on the one hand and the roll stand 6, 6 'on the other hand in a known manner.
  • the direction of rolling of the rolling stock is shown by the double arrow 11.
  • the bending blocks 5 ', 5a' are positioned and locked with the screw jack, while the piston cylinder 7, which connects the bending blocks 5 and 5a, introduces the necessary bending force.
  • the invention is not limited to the use of screw jacks, but any mechanism for vertical positioning can be used, for example wedges with positive guidance, cylinders with clamping heads and position sensors or an eccentric shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Actuator (AREA)
  • Unwinding Webs (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

Device for bending rollers in a multiple roller rolling mill comprises a vertical positioning unit (10) assigned to bending blocks (5, 5a) of one roll stand (6), to a plunger cylinder (7) and to the bending blocks (5', 5a') of the opposite-lying roll stand (6').

Description

Reibungsarmes Biegesystem in einem Mehrwalzen-WalzgerüstLow-friction bending system in a multi-roll mill stand
Die Erfindung betrifft eine Vorrichtung zum Biegen der Walzen in einem Mehrwalzen-Walzgerüst mit ein- und auslaufseitig zwischen den Walzeneinbaustük- ken und den Ständerfenstern befestigten von Stellmitteln beaufschlagbaren Biegeblöcken.The invention relates to a device for bending the rolls in a multi-roll mill stand with bending blocks which can be acted upon by actuating means and are fastened on the inlet and outlet sides between the roll chocks and the stator windows.
Gattungsgemäße Vorrichtungen werden zur Planheitsregelung eines Walzproduktes als Stellglied zur Arbeitswalzenbiegung eingesetzt. Das Stellglied hat hierbei direkten Einfluß auf die Walzspaltgeometrie im Bandkantenbereich, wobei die Arbeitswalzen positiv um die Kanten der darüber liegenden Walzen ge- bogen und negativ um die Kanten des Walzgutes gebogen werden.Generic devices are used for flatness control of a rolled product as an actuator for work roll bending. The actuator has a direct influence on the roll gap geometry in the strip edge area, the work rolls being bent positively around the edges of the rolls above and negatively bent around the edges of the rolling stock.
Aus der deutschen Patentschrift 22 50 953 ist ein Walzgerüst mit Arbeits- und Stützwalzen und einer Walzenbiegeeinrichtung, in dem die Einbaustücke der Arbeitswalzen zwischen in den Ständerfenstern verankerten Blöcken geführt und zur Beaufschlagung für die Arbeitswalzen-Ballenkorrektur durch beidseitig beaufschlagbare, den Blöcken zugeordnete Kolben-Zylinder-Einheiten verbunden sind bekannt, wobei an jedem Block ein unteres und ein oberes Führungsstück vertikal verschiebbar geführt ist, wogegen das eine Führungsstück den Zylinder aufnimmt und das andere Führungsstück mit dem Kolben verbunden ist, und die Führungsstücke mit den Einbaustücken durch Horizontalführungen in vertikaler Richtung formschlüssig verbunden sind, die für den Walzenwechsel zwischen den Ständern parallel zu den Walzen fortgesetzt sind. Auf diese Weise soll erreicht werden, dass zur Walzenbiegung auf jeder Seite zwei Kolben- Zylinder-Einheiten erforderlich sind.From the German patent specification 22 50 953 is a roll stand with work and support rolls and a roll bending device, in which the chocks of the work rolls are guided between blocks anchored in the stand windows and to act upon the work roll bale correction by piston cylinders which can be loaded on both sides and assigned to the blocks -Units connected are known, with a lower and an upper guide piece being guided vertically displaceably on each block, whereas one guide piece receives the cylinder and the other guide piece is connected to the piston, and the guide pieces with the chocks by horizontal guides in the vertical direction in a form-fitting manner are connected, which are continued parallel to the rolls for the roll change between the stands. In this way it should be achieved that two piston-cylinder units are required on each side for the roll bending.
Diese Vorrichtung hat sich in der Praxis bewährt. Nachteilig ist jedoch, dass die Zylinder antriebs- und bedienungsseitig, sowie einlauf- und auslaufseitig ange- ordnet sein müssen. Durch diese bewegliche Lagerung jeder Seite entstehen zwangsläufig hohe Reibungskräfte, die sich zudem negativ auf die Planheitsregelung auswirken.This device has proven itself in practice. However, it is disadvantageous that the cylinders are driven on the drive and operator side as well as on the inlet and outlet side. must be in order. This flexible mounting of each side inevitably creates high frictional forces, which also have a negative effect on the flatness control.
Der Erfindung liegt die Aufgabe zugrunde, die Reibungskräfte in einem gat- tungsgemäßen System zu reduzieren.The object of the invention is to reduce the frictional forces in a generic system.
Zur Lösung dieser Aufgabe wird vorgeschlagen, dass den Biegeblöcken des einen Walzständers ein Kolbenzylinder und den Biegeblöcken des gegenüberliegenden Walzenständers eine Vertikalpositionier-Einrichtung zugeordnet ist.To solve this problem, it is proposed that the bending blocks of the one roll stand be assigned a piston cylinder and the bending blocks of the opposite roll stand a vertical positioning device.
Durch das positionieren und arretieren der Biegeblöcke mittels der Vertikalposi- tionier-Einrichtung, vorzugsweise eines Spindelhubgetriebes läßt sich ein Drehpunkt erzeugen, um den das Einbaustück geschwenkt werden kann. Zur Einleitung der antriebs- und bedienungsseitigen Biegekraft in die Biegeblöcke ist somit nur jeweils ein Zylinder notwendig.By positioning and locking the bending blocks by means of the vertical positioning device, preferably a worm gear screw jack, a pivot point can be created around which the chock can be pivoted. Only one cylinder is required to introduce the bending force on the drive and operator side into the bending blocks.
Dadurch, dass im Walzgerüst nur noch zwei Zylinder für die Einleitung der Biegekraft in die Biegeblöcke im Einsatz sind, läßt sich die Reibungskraft erheblich reduzieren.The fact that only two cylinders are used in the roll stand to introduce the bending force into the bending blocks means that the frictional force can be considerably reduced.
Durch das Spindelhubgetriebe läßt sich auch der Abschliffbereich der Walzen kompensieren.The grinding range of the rollers can also be compensated for by the screw jack.
Die erfindungsgemäße Vorrichtung läßt sich auch für die Zwischenwalzenbie- gung in einem Sechswalzengerüst einsetzen. Auch ein Einsatz in Reversier- walzgerüsten ist denkbar.The device according to the invention can also be used for intermediate roll bending in a six-roll stand. Use in reversing roll stands is also conceivable.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen offenbart.Further advantageous embodiments of the invention are disclosed in the subclaims.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:In the drawing, an embodiment of the invention is shown. Show it:
Figur 1 ein Seitenansichtsauschnitt eines Quarto-Walzgerüstes von derFigure 1 is a side view section of a four-high rolling mill from the
Antriebsseite her gesehen,Seen from the drive side,
Figur 2 eine Aufsicht auf die Arbeitswalzenebene des Walzgerüstes aus Fig. 1.FIG. 2 is a plan view of the work roll level of the roll stand from FIG. 1.
In einem Walzgerüst 1 werden die Arbeitswalzen 3, 3a durch die Stützwalzen 2, 2a abgestützt. Die Einbaustücke 4, 4a der Arbeitswalzen sind über die Biege- blocke 5, 5a, 5', 5a' mit dem Walzenständer 6, 6' verbunden. Zwischen den Biegeblöcken 5' und 5a' ist ein Spindelhubgetriebe 10 angeordnet, welches über einen Antrieb 12 positionierbar und arretierbar ist.In a roll stand 1, the work rolls 3, 3a are supported by the support rolls 2, 2a. The chocks 4, 4a of the work rolls are connected to the roll stand 6, 6 'via the bending blocks 5, 5a, 5', 5a '. A screw jack 10 is arranged between the bending blocks 5 'and 5a' and can be positioned and locked via a drive 12.
Die Biegeblöcken 5 und 5a sind über einen Kolbenzylinder 7 verbunden, des- sen Kolben 9 im Biegeblock 5a gelagert ist, während seine Verbindungsstange 8 im Biegeblock 5 montiert ist. Die Biegeblöcke 5, 5a, 5' und 5a' lassen sich mit den Einbaustücken 4, 4a der Arbeitswalzen 3, 3a einerseits und dem Walzenständer 6, 6' andererseits in bekannter Weise verbinden.The bending blocks 5 and 5a are connected via a piston cylinder 7, the piston 9 of which is mounted in the bending block 5a, while its connecting rod 8 is mounted in the bending block 5. The bending blocks 5, 5a, 5 'and 5a' can be connected to the chocks 4, 4a of the work rolls 3, 3a on the one hand and the roll stand 6, 6 'on the other hand in a known manner.
Die Walzrichtung des durchlaufenden Walzgutes ist durch den Doppelpfeil 11 dargestellt. Zur Planheitsregelung werden die Biegeblöcke 5', 5a' mit dem Spindelhubgetriebe positioniert und arretiert, während der Kolbenzylinder 7, welcher die Biegeblöcke 5 und 5a miteinander verbindet, die notwendige Biegekraft einleitet.The direction of rolling of the rolling stock is shown by the double arrow 11. For flatness control, the bending blocks 5 ', 5a' are positioned and locked with the screw jack, while the piston cylinder 7, which connects the bending blocks 5 and 5a, introduces the necessary bending force.
Die Erfindung ist nicht auf den Einsatz von Spindelhubgetrieben beschränkt, sondern es kann auf jede Mechanik zur vertikalen Positionierung zurückgegriffen werden, bspw. auf Keile mit Zwangsführung, Zylinder mit Klemmkopf und Positionsgeber oder auf eine Exzenterwelle. The invention is not limited to the use of screw jacks, but any mechanism for vertical positioning can be used, for example wedges with positive guidance, cylinders with clamping heads and position sensors or an eccentric shaft.

Claims

Patentansprüche claims
1. Vorrichtung zum Biegen der Walzen in einem Mehrwalzen-Walzgerüst mit ein- und auslaufseitig zwischen den Walzeneinbaustücken und den Ständerfenstern befestigten, von Stellmitteln beaufschlagbaren Biegeblöcken, dadurch gekennzeichnet, dass den Biegeblöcken ( 5,5a;) des einen Walzenständers (6) ein Kolben- zylinder (7), und den Biegeblöcken (5', 5a') des gegenüberliegenden Walzenständers (6') eine Vertikalpositionier-Einrichtung (10) zugeordnet ist.1. Device for bending the rolls in a multi-roll mill stand with bending blocks fastened on the inlet and outlet sides between the roll chocks and the stand windows and acting on actuating means, characterized in that the bending blocks (5,5a;) of the one roll stand (6) have a piston - Cylinder (7), and the bending blocks (5 ' , 5a ' ) of the opposite roller stand (6 ') is assigned a vertical positioning device (10).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass über die Vertikalpositionier-Einrichtung (10) eine Walzenwechselposition vertikal einstellbar ist.2. Device according to claim 1, characterized in that a roll change position is vertically adjustable via the vertical positioning device (10).
3. Vorrichtung nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass die Kolbenzylinder (7) jeweils aus einem in dem einen Biegeblock (5) angeordneten Kolben (8) und einer Verbindungsstange (9) zu dem anderen Biegeblock (5a) bestehen.3. Device according to claims 1 or 2, characterized in that the piston cylinders (7) each consist of a piston (8) arranged in one bending block (5) and a connecting rod (9) to the other bending block (5a).
4. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Vertikalpositionier-Einrichtung (10) als ein Spindelhubgetriebe, als Keile mit Zwangsführung als Zylinder mit Klemmkopf und Positionsgeber; als Exzenterwelle oder eine andere Mechanik zur vertikalen Positionierung ausgebildet ist. 4. Device according to one or more of claims 1 to 3, characterized in that the vertical positioning device (10) as a screw jack, as wedges with positive guidance as a cylinder with a clamping head and position transmitter; is designed as an eccentric shaft or another mechanism for vertical positioning.
EP03807758A 2002-09-20 2003-07-25 Low-friction bending system in a roll stand comprising several rolls Expired - Lifetime EP1556178B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10243677A DE10243677A1 (en) 2002-09-20 2002-09-20 Device for bending rollers in a multiple roller rolling mill comprises a vertical positioning unit assigned to bending blocks of one roll stand, to a plunger cylinder and to the bending blocks of the opposite-lying roll stand
DE10243677 2002-09-20
PCT/EP2003/008223 WO2004033120A1 (en) 2002-09-20 2003-07-25 Low-friction bending system in a roll stand comprising several rolls

Publications (2)

Publication Number Publication Date
EP1556178A1 true EP1556178A1 (en) 2005-07-27
EP1556178B1 EP1556178B1 (en) 2006-05-17

Family

ID=31969310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03807758A Expired - Lifetime EP1556178B1 (en) 2002-09-20 2003-07-25 Low-friction bending system in a roll stand comprising several rolls

Country Status (15)

Country Link
US (2) US20060021412A1 (en)
EP (1) EP1556178B1 (en)
JP (1) JP4732752B2 (en)
KR (1) KR100990866B1 (en)
CN (1) CN100342988C (en)
AT (1) ATE326295T1 (en)
AU (1) AU2003250179A1 (en)
BR (1) BR0313605B1 (en)
CA (1) CA2498303C (en)
DE (2) DE10243677A1 (en)
ES (1) ES2260692T3 (en)
RU (1) RU2313410C2 (en)
UA (1) UA82333C2 (en)
WO (1) WO2004033120A1 (en)
ZA (1) ZA200501197B (en)

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RU2313410C2 (en) 2007-12-27
KR20050057252A (en) 2005-06-16
CA2498303A1 (en) 2004-04-22
EP1556178B1 (en) 2006-05-17
DE50303390D1 (en) 2006-06-22
AU2003250179A1 (en) 2004-05-04
ATE326295T1 (en) 2006-06-15
JP2006500225A (en) 2006-01-05
BR0313605B1 (en) 2012-09-04
KR100990866B1 (en) 2010-10-29
JP4732752B2 (en) 2011-07-27
CN1681610A (en) 2005-10-12
US20100018275A1 (en) 2010-01-28
WO2004033120A1 (en) 2004-04-22
CN100342988C (en) 2007-10-17
ZA200501197B (en) 2005-09-12
BR0313605A (en) 2005-06-21
ES2260692T3 (en) 2006-11-01
DE10243677A1 (en) 2004-04-01
CA2498303C (en) 2010-09-14
US20060021412A1 (en) 2006-02-02
RU2005111758A (en) 2005-09-20

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