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US20060021412A1 - Low-friction bending system in a roll stand comprising serveral rolls - Google Patents

Low-friction bending system in a roll stand comprising serveral rolls Download PDF

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Publication number
US20060021412A1
US20060021412A1 US10/528,324 US52832405A US2006021412A1 US 20060021412 A1 US20060021412 A1 US 20060021412A1 US 52832405 A US52832405 A US 52832405A US 2006021412 A1 US2006021412 A1 US 2006021412A1
Authority
US
United States
Prior art keywords
bending
rolls
blocks
bending blocks
piston
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.)
Abandoned
Application number
US10/528,324
Inventor
Wolfgan 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
Individual
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 Individual filed Critical Individual
Assigned to SMS DEMAG AG reassignment SMS DEMAG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENKER, WOLFGANG
Publication of US20060021412A1 publication Critical patent/US20060021412A1/en
Priority to US12/587,050 priority Critical patent/US20100018275A1/en
Abandoned legal-status Critical Current

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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 concerns a device for bending the rolls in a rolling stand comprising several rolls with the use of bending blocks, which are mounted at the run-in end and the runout end between the roll chocks and the housing windows and can be acted upon by control elements.
  • Devices of this general type are used for flatness control of a rolled product as control elements for bending the work rolls.
  • the control element has a direct effect on the roll gap geometry in the strip edge region, such that the work rolls are bent positively around the edge of the rolls lying above them and negatively around the edges of the rolling stock.
  • the goal of the invention is to reduce frictional forces in a system of this general type.
  • a piston-cylinder be assigned to the bending blocks of one of the mill housings, and that a vertical positioning mechanism be assigned to the bending blocks of the opposite mill housing.
  • the positioning and locking of the bending blocks by means of the vertical positioning mechanism make it possible to produce a center of rotation about which the chock can be rotated.
  • the vertical positioning mechanism preferably a spindle-type lifting gear unit
  • the worn zone of the rolls can also be compensated by the spindle-type lifting gear unit.
  • the device of the invention can also be used for intermediate roll bending in a six-high mill. Use in reversing mills is also conceivable.
  • FIG. 1 shows a side view section of a four-high mill from the drive end.
  • FIG. 2 shows a top view of the work roll plane of the rolling stand in FIG. 1 .
  • a rolling stand 1 the work rolls 3 , 3 a are supported by the backup rolls 2 , 2 a .
  • the chocks 4 , 4 a of the work rolls are connected by the bending blocks 5 , 5 a , 5 ′, 5 a ′ with the mill housings 6 , 6 ′.
  • a spindle-type lifting gear unit 10 is installed between the bending blocks 5 ′ and 5 a ′ and can be positioned and locked by a drive 12 .
  • the bending blocks 5 and 5 a are connected by a piston-cylinder 7 , whose piston 9 is supported in bending block 5 a , while its connecting rod 8 is mounted in bending block 5 .
  • the bending blocks 5 , 5 a , 5 ′ and 5 a ′ can be connected by well-known means with the chocks 4 , 4 a of the work rolls 3 , 3 a , on the one hand, and the mill housings 6 , 6 ′, on the other hand.
  • the rolling direction of the rolling stock passing through the mill is indicated by the double arrow 11 .
  • Flatness control is accomplished by positioning and locking the bending blocks 5 ′, 5 a ′ with the spindle-type lifting gear unit, while the piston-cylinder 7 , which connects the bending blocks 5 and 5 a with each other, introduces the necessary bending force.
  • the invention is not limited to the use of spindle-type lifting gear units, but rather any vertical positioning mechanism can be used, for example, wedges with restricted guidance, a cylinder with clamping head and position sensor, 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)
  • Unwinding Webs (AREA)
  • Actuator (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

Disclosed is a device for bending the rolls in a roll stand comprising several rolls. Said device is provided with bending blocks which are fastened between the built-in roll parts and the stand windows at the delivery end and the discharge end, the top and bottom bending blocks being connected by means of piston cylinders and/or a vertical positioning mechanism, preferably a spindle-type lifting gear unit. A bending force can be introduced into the bending blocks (5, 5 a) which are connected on the same side via a piston cylinder (7) while the opposite bending blocks (5′, 5 a′) can be positioned and locked via the spindle-type lifting gear unit (10).

Description

  • The invention concerns a device for bending the rolls in a rolling stand comprising several rolls with the use of bending blocks, which are mounted at the run-in end and the runout end between the roll chocks and the housing windows and can be acted upon by control elements.
  • Devices of this general type are used for flatness control of a rolled product as control elements for bending the work rolls. The control element has a direct effect on the roll gap geometry in the strip edge region, such that the work rolls are bent positively around the edge of the rolls lying above them and negatively around the edges of the rolling stock.
  • German Patent 22 50 953 describes a rolling stand with work rolls and backup rolls and a roll bending device, in which the chocks of the work rolls are supported between blocks anchored in the housing windows and are connected by piston-cylinder units, which are assigned to the blocks and can be acted upon on both sides to effect the work roll camber correction, such that on each block a lower and an upper guide member are supported in such a way that they can be moved vertically, whereas one of the guide members holds the cylinder, and the other guide member is connected with the piston, and the guide members are connected with the chocks in a positive-locking way in the vertical direction by horizontal guides, which are continued between the housings parallel to the rolls for the roll change. In this way, it is intended that two piston-cylinder units are necessary on each side for roll bending.
  • This device has proven effective in practice. However, it has the disadvantage that the cylinders must be arranged on the drive end and the tending end and on the run-in end and the runout end. This movable support of each end necessarily results in high frictional forces, which, in addition, have negative effects on the flatness control.
  • The goal of the invention is to reduce frictional forces in a system of this general type.
  • To achieve this goal, it is proposed that a piston-cylinder be assigned to the bending blocks of one of the mill housings, and that a vertical positioning mechanism be assigned to the bending blocks of the opposite mill housing.
  • The positioning and locking of the bending blocks by means of the vertical positioning mechanism, preferably a spindle-type lifting gear unit, make it possible to produce a center of rotation about which the chock can be rotated. Thus, only one cylinder each is necessary to introduce the bending force into the bending blocks at the drive end and the tending end.
  • By virtue of the fact that there are now only two cylinders being used in the rolling stand to introduce the bending force into the bending blocks, the frictional force can be significantly reduced.
  • The worn zone of the rolls can also be compensated by the spindle-type lifting gear unit.
  • The device of the invention can also be used for intermediate roll bending in a six-high mill. Use in reversing mills is also conceivable.
  • Additional advantageous embodiments of the invention are disclosed in the dependent claims.
  • The drawings illustrate an embodiment of the invention.
  • FIG. 1 shows a side view section of a four-high mill from the drive end.
  • FIG. 2 shows a top view of the work roll plane of the rolling stand in FIG. 1.
  • In a rolling stand 1, the work rolls 3, 3 a are supported by the backup rolls 2, 2 a. The chocks 4, 4 a of the work rolls are connected by the bending blocks 5, 5 a, 5′, 5 a′ with the mill housings 6, 6′. A spindle-type lifting gear unit 10 is installed between the bending blocks 5′ and 5 a′ and can be positioned and locked by a drive 12.
  • The bending blocks 5 and 5 a are connected by a piston-cylinder 7, whose piston 9 is supported in bending block 5 a, while its connecting rod 8 is mounted in bending block 5. The bending blocks 5, 5 a, 5′ and 5 a′ can be connected by well-known means with the chocks 4, 4 a of the work rolls 3, 3 a, on the one hand, and the mill housings 6, 6′, on the other hand.
  • The rolling direction of the rolling stock passing through the mill is indicated by the double arrow 11. Flatness control is accomplished by positioning and locking the bending blocks 5′, 5 a′ with the spindle-type lifting gear unit, while the piston-cylinder 7, which connects the bending blocks 5 and 5 a with each other, introduces the necessary bending force.
  • The invention is not limited to the use of spindle-type lifting gear units, but rather any vertical positioning mechanism can be used, for example, wedges with restricted guidance, a cylinder with clamping head and position sensor, or an eccentric shaft.

Claims (4)

1. Device for bending the rolls in a rolling stand comprising several rolls with the use of bending blocks, which are mounted at the run-in end and the runout end between the roll chocks and the housing windows and can be acted upon by control elements, wherein a piston-cylinder (7) is assigned to the bending blocks (5, 5 a) of one of the mill housings (6), and a vertical positioning mechanism (10) is assigned to the bending blocks (5′, 5 a′) of the opposite mill housing (6′).
2. Device in accordance with claim 1, wherein a roll change position can be vertically adjusted by the vertical positioning mechanism (10).
3. Device in accordance with claim 1, wherein the piston-cylinder (7) comprises a piston (8) mounted in one of the bending blocks (5) and a connecting rod (9) to the other bending block (5 a).
4. Device in accordance with claim 1, wherein the vertical positioning mechanism (10) is designed as a spindle-type lifting gear unit, as wedges with restricted guidance, as a cylinder with clamping head and position sensor, as an eccentric shaft, or as another type of mechanism for vertical positioning.
US10/528,324 2002-09-20 2003-07-25 Low-friction bending system in a roll stand comprising serveral rolls Abandoned US20060021412A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/587,050 US20100018275A1 (en) 2002-09-20 2009-09-30 Low-friction bending system in a rolling stand comprising several rolls

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10243677.0 2002-09-20
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
PCT/EP2003/008223 WO2004033120A1 (en) 2002-09-20 2003-07-25 Low-friction bending system in a roll stand comprising several rolls

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/587,050 Continuation US20100018275A1 (en) 2002-09-20 2009-09-30 Low-friction bending system in a rolling stand comprising several rolls

Publications (1)

Publication Number Publication Date
US20060021412A1 true US20060021412A1 (en) 2006-02-02

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Family Applications (2)

Application Number Title Priority Date Filing Date
US10/528,324 Abandoned US20060021412A1 (en) 2002-09-20 2003-07-25 Low-friction bending system in a roll stand comprising serveral rolls
US12/587,050 Abandoned US20100018275A1 (en) 2002-09-20 2009-09-30 Low-friction bending system in a rolling stand comprising several rolls

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/587,050 Abandoned US20100018275A1 (en) 2002-09-20 2009-09-30 Low-friction bending system in a rolling stand comprising several rolls

Country Status (15)

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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)

Cited By (1)

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US20130192327A1 (en) * 2009-07-07 2013-08-01 Sms Siemag Ag 4-roll, 6-roll, 18-hs-roll stand having a cassette-type design

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CN1320968C (en) * 2005-04-29 2007-06-13 中国第二重型机械集团公司 Mill bend roller connecting device
JP4701067B2 (en) 2005-10-20 2011-06-15 東芝機械株式会社 roll
DE102008049179A1 (en) * 2008-09-26 2010-04-01 Sms Siemag Aktiengesellschaft rolling device
CN112178003B (en) * 2020-09-16 2023-07-21 马鞍山钢铁股份有限公司 Working roll locking device and assembly method of roll bending cylinder of temper mill
CN115193918A (en) * 2022-07-19 2022-10-18 中冶赛迪工程技术股份有限公司 Three-roller skew tube rolling mill

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130192327A1 (en) * 2009-07-07 2013-08-01 Sms Siemag Ag 4-roll, 6-roll, 18-hs-roll stand having a cassette-type design
US9656312B2 (en) * 2009-07-07 2017-05-23 Sms Group Gmbh 4-roll, 6-roll, 18-HS-roll stand having a cassette-type design

Also Published As

Publication number Publication date
RU2313410C2 (en) 2007-12-27
CA2498303A1 (en) 2004-04-22
KR100990866B1 (en) 2010-10-29
JP2006500225A (en) 2006-01-05
US20100018275A1 (en) 2010-01-28
AU2003250179A1 (en) 2004-05-04
KR20050057252A (en) 2005-06-16
ATE326295T1 (en) 2006-06-15
CN100342988C (en) 2007-10-17
ZA200501197B (en) 2005-09-12
RU2005111758A (en) 2005-09-20
CN1681610A (en) 2005-10-12
EP1556178B1 (en) 2006-05-17
DE50303390D1 (en) 2006-06-22
EP1556178A1 (en) 2005-07-27
ES2260692T3 (en) 2006-11-01
DE10243677A1 (en) 2004-04-01
UA82333C2 (en) 2008-04-10
BR0313605A (en) 2005-06-21
WO2004033120A1 (en) 2004-04-22
JP4732752B2 (en) 2011-07-27
CA2498303C (en) 2010-09-14
BR0313605B1 (en) 2012-09-04

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AS Assignment

Owner name: SMS DEMAG AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DENKER, WOLFGANG;REEL/FRAME:016214/0592

Effective date: 20050208

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION