US3699796A - Work roll changers - Google Patents

Work roll changers Download PDF

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Publication number
US3699796A
US3699796A US93727A US3699796DA US3699796A US 3699796 A US3699796 A US 3699796A US 93727 A US93727 A US 93727A US 3699796D A US3699796D A US 3699796DA US 3699796 A US3699796 A US 3699796A
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United States
Prior art keywords
rolling mill
roll
guide means
latch
rails
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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.)
Expired - Lifetime
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US93727A
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English (en)
Inventor
Werner W Eibe
Wilfred T Farrell
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.)
Blaw Knox Co
Blaw Knox Corp
Original Assignee
Blaw Knox Co
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Filing date
Publication date
Application filed by Blaw Knox Co filed Critical Blaw Knox Co
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Publication of US3699796A publication Critical patent/US3699796A/en
Assigned to BLAW-KNOX COMPANY reassignment BLAW-KNOX COMPANY MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 26, 1978. DELAWARE Assignors: AETNA-STANDARD ENGINEERING COMPANY, BLAW-KNOX CONSTRUCTION EQUIPMENT, INC.,, BLAW-KNOX EQUIPMENT, INC., BLAW-KNOX FOOD & CHEMICAL EQUIPMENT, INC., BLAW-KNOX FOUNDRY & MILL MACHINERY, INC., COPES-VULCAN, INC.
Assigned to WHITE CONSOLIDATED INDUSTRIES, INC. reassignment WHITE CONSOLIDATED INDUSTRIES, INC. MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 26, 1978 DISTRICT OF COLUMBIA Assignors: ATHENS STOVE WORKS, INC., BLAW-KNOX COMPANY, BULLARD COMPANY THE, DURALOY BLAW-KNOX, INC., FAYSCOTT, INC., GIBSON PRODUCTS CORPORATION, HUPP, INC., JERGUSON GAGE & VALVE COMPANY, KELIVINATOR INTERNATIONAL CORPORATION, KELVINATOR COMMERCIAL PRODUCTS, INC., KELVINATOR, INC., R-P & C VALVE, INC., WHITE SEWING MACHINE COMPANY, WHITE-SUNDSTRAND MACHINE TOOL, INC., WHITE-WESTINGHOUSE CORPORATION
Assigned to BLAW KNOX CORPORATION, A CORP OF DELAWARE reassignment BLAW KNOX CORPORATION, A CORP OF DELAWARE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WHITE CONSOLIDATED INDUSTRIES, INC., A CORP OF DE.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B21B31/103—Manipulators or carriages therefor
    • 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

Definitions

  • the work rolls (and checks) are raised and lowered on spaced apart first inside rails contact- [21] Appl. 93,727 ing the checks supporting the upper work roll from operating position to transfer position in the mill hous- ⁇ 521 US. Cl ..72/239 ing Spaced fnn1 i miner W they independently seek a predetermined drive position, preferably by the [51] Int. Cl.
  • WORK ROLL CHANGERS This invention relates to apparatus for automatically changing the work rolls of a rolling mill. It provides a relatively simple and relatively inexpensive apparatus for rapidly changing the work rolls of a rolling mill automatically.
  • a rolling mill is used to make metals into various shapes. It may consist of relatively small work rolls and larger back-up rolls positioned parallel to each other and in contact with work rolls when the mill is operating.
  • the work rolls are held in position by chocks at each end of the mill engaging the necks of the rolls.
  • the chocks are in turn positioned within windows in the ends of the mill housing so that chocks can move perpendicular to the movement of the material through the mill and be loaded during mill operation by screwdowns.
  • the screwdowns engage the chocks that position the upper back-up roll during operation and also may raise and lower it into operating position.
  • Balancing means are provided for controlling the bite of the rolling mill during operation and for raising and lowering the work rolls.
  • Our invention overcomes these disadvantages and difficulties and provides a simpler and less expensive apparatus for rapidly and automatically changing the work rolls of a rolling mill.
  • Our invention is directed to a rolling mill having upper and lower work rolls forming a pass line and a mill housing surrounding said pass line. Windows are provided in each end of said mill housing on opposite sides of the pass line, each window receiving a pair of superimposed roll chocks, i.e., upper and lower roll chocks.
  • the upper and lower work rolls have neck portions which are journaled into said roll chocks and are positioned by balancing means to adjust the bite of the rolling mill.
  • said rolling mill we provide the improvement comprising a pair of spaced apart first inside rails positioned in said windows and extending from one end of mill housing to the other end, said first inside rails contacting said upper roll chocks; first driving means for raising and lowering said first inside rails and in turn said upper work rolls; vertical support means rigidly attached to said upper roll chocks and slidably attached to said lower roll chocks, and stop means adjacent said vertical support means for raising and lowering said lower work rolls spaced from said upper work roll as said first rails are raised and lowered; transport means, preferably wheel means fastened to portions of said vertical support means, are adapted to carry said upper and lower work rolls (and chocks) without the mill housing spaced from one another.
  • said first driving means is also the balancing means for said rolling mill.
  • a roll transfer bed is positioned to one side of said rolling mill, and preferably can be raised and lowered by second drive means.
  • a shift car is positioned on said transfer bed and is movable substantially parallel to the pass line of said rolling mill.
  • Third drive means are provided on said transfer bed for moving said shift car substantially parallel to the pass line of said rolling mill.
  • At least two pairs of spaced apart second outside rails are positioned on said shift car, each pair of second outside rails being adapted for selective horizontal alignment with said transport means.
  • Guide means are positioned on said transfer bed and said shift car adjacent each pair of second outside rails.
  • Latch means are positioned on said roll transfer bed in permanent alignment with work rolls when positioned in said mill housing, and are adapted to move along said guide means.
  • Said latch means move said work rolls and said roll chocks into and out of said mill housing on said first and second rails by use of fourth drive means which moves said latch means along said guide means.
  • Said latch means are also adapted to engage a work roll without the use of additional drive or power means.
  • FIG. 1 is a top plan view of a rolling mill stand and roll changer
  • FIG. 2 is a partial cross-sectional view taken along line II--II of FIG. 1 showing the roll changer in lowered position;
  • FIG. 3 is a partial cross-sectional view taken along line II-II of FIG. 1 showing the roll changer in raised position;
  • FIG. 4 is a partial side view of an alternative rolling mill stand and roll changer
  • FIG. 5 is a partial end view of the rolling mill stand and roll changer shown in FIG. 4;
  • FIG. 6 is an enlarged fragmentary cross section on line VI-VI of FIG. 1 showing the latch means of the roll changer in position to withdraw old work rolls from the mill housing;
  • FIG. 7 is an enlarged fragmentary cross section on line VI-VI of FIG. 1 showing the latch means of the roll changer positioning new work rolls in the mill hous
  • FIG. 8 is a partial side view of a second alternative rolling mill stand and roll changer
  • FIG. 9 is a partial end view of the second alternative rolling mill stand and roll changer shown in FIG. 8.
  • Rolling mill 10 has a mill housing 13 surrounding said pass line 10A.
  • Mill housing 13 has windows 14 in each end of it.
  • Upper roll chocks l and lower roll chocks 16 support upper work roll 11 and lower work roll 12 respectively and are positioned in said windows 14.
  • Back-up rolls 17 are positioned above and below upper and lower work rolls 11 and 12 and in contact with them when the rolling mill is ready for operation. Back-up rolls 17 are journaled into the ends of the mill housing 13. Back-up roll 17 in contact with upper work roll 11 is loaded by screwdowns (not shown) which are conventional on rolling mills.
  • a pair of spaced apart first inside rails 18 are positioned in said windows 14 and extend from one end of the mill housing 13 to the other end. Said first inside rails 18 are positioned in contact with upper work roll chocks at 19.
  • First drive means 19A a hydraulic means, is provided in mill housing 13 for raising and lowering said first inside rails 18 and in turn said upper work roll 12.
  • First drive means 19A also serves as a chock balancing means to adjust the bite of rolling mill 10.
  • Four vertical support means extend through and are rigidly attached to said upper roll chocks l5, and extend through and are slidably attached to said lower work chocks 16.
  • Vertical support means 20 are provided with stop means 21 so that said lower work roll 12 can be raised or lowered spaced from said upper work roll 11 as said upper work roll 11 is raised or lowered on first inside rails 18.
  • Wheel means 22 are fastened to lower portions of said vertical support means 20 and are adapted to carry work rolls 11 and 12 (and roll chocks 15 and 16) with out mill housing 13.
  • the wheel means 22 are suspended in windows 14 of mill housing 13 when first rails 18 are in raised position, and positioned in seats 23 in mill housing 13 when first rails 18 are in lowered position.
  • Slotted stop means 21A are positioned on at least one of said first inside rails 18 to vertically align said wheel means 22 with second outside rails 28 and 28 when first rails 18 are raised to their highest position.
  • Roll'transfer bed 24 is positioned to one side of rolling mill 10.
  • roll transfer bed 24 is provided (as shown in the alternative embodiments) with second drive means 25 for raising and lowering work rolls 11 and 12 (and roll chocks l5 and 16) from floor level to transfer level.
  • Second drive means 25 for raising and lowering can be hydraulic means as shown in FIGS. 4 and 5, or can be mechanical means such as screw jacks as sho'wn in FIGS. 8 and 9.
  • roll transfer bed 24 may not have second drive means 25 for raising and lowering (as shown in FIG. 1) where the distance between pass line 10A and the floor level is relatively small or where space will permit the presence of a large transfer bed adjacent the rolling mill 10.
  • the roll transfer bed 24 may be stationary; or movable'on wheel means 24A and rails 248 by drive means 24C, and positioned adjacent rolling mill 10 by fastening means 24D attaching transfer bed 24 to mill housing 13.
  • the roll transfer bed 24 has positioned on it a shift car 26 which is movable substantially parallel to pass line 10A of said rolling mill 10.
  • the roll transfer bed 24 also supports third drive means 27, a hydraulic means, for moving said shift car 26 substantially parallel to the pass line 10A of said rolling mill 10.
  • two pairs of spaced apart second outside rails 28 and 28' are positioned on said shift car 26 and are adapted to selectively horizontally align with wheel means 22 as suspended in the windows 14 of mill housing 13 in in the highest position.
  • Guide means 29 and 29' are positioned on said shift car 26 between each pair of second outside rails 28 and 28 respectively.
  • Latch means 30 are positioned on said roll transfer bed 24 in permanent alignment with the neck 31 of a lower work roll 12 as supported in the mill housing 13 with first inside rails 18 in highest position.
  • Latch means 30 are adapted to move along said guide means 29 and 29 on said shift car 26 when they are aligned with mill housing 13, adapted to engage with and disengage from neck 31 of lower work roll 12 without the use of separate drive or power means, and to move work rolls 12 and 11 (and chocks 15 and 16) into and out of mill housing 13 on first inside rails 18 and second outside rails 28.
  • Fourth drive means 32 are provided on roll transfer bed 24 for driving latch means 30 along guide means 29 and in turn moving said work rolls 11 and 12 into and out of said mill housing 13.
  • latch means 30 has a spring means 33 and a latch finger 34 rotatably movable about pivot 35.
  • the one guide means 29' has a curved end portion 36 adjacent mill housing 13 and the other guide means 29 has a straight end portion 38 adjacent mill housing 13.
  • latch means 30 can engage neck 31 of lower work roll 12 by moving latch finger 34 into grove 37 in neck 31 against spring means 33 while latch means 30 moves along straight end portion 38 adjacent mill housing 13.
  • said latch means 30 can disengage from neck 31 of lower work roll 12 by disconnecting latch finger 34 from groove 37 while latch 30 moves along curved end portion 36 adjacent mill housing 13.
  • the latch means 30 can automatically connect with and disconnect from the neck 31 of lower work roll 12 without the use of ad ditional drive or power means.
  • Said fourth drive means 32 for moving latch 30 along guide means 29 or 29' can be of any suitable and convenient form. It can, for example, be a push rod means moved by a hydraulic cylinder (not shown). But preferably fourth drive means 32 is comprised of pivoted chain'like lengths 39 which have moving means 40 attached to each pivot 41 thereof which are adapted to slide or roll 'within said guide means 29 forming a push-pull chain assembly.
  • the push-pull chain assembly can be driven along said guide means by a sprocket and reversible motor assembly 32A.
  • Guide means 29 and 29 can also be of any suitable and convenient form. We prefer, however, that guide means 29 be comprised of spaced apart channels 42 opening toward each other to form a track. In this way, the latch means 30 can be moved along guide means 29 or 29' by simply providing rollers 43 on a latch means 30 that are adapted to roll within channels 42. Also moving means 40 can be simply rollers similar to rollers 43 to roll within channels 42.
  • our roll changer can rapidly change work rolls 11 and 12 (and roll chocks 15 and 16) for different work rolls 11' and 12' (and roll chocks 15 and 16) automatically. This is done by first positioning work rolls 11' and 12' on roll transfer bed 24 on second outside rails 28' at floor level and raising roll transfer bed 24 to transfer level by second drive means 25. The rolling mill is stopped and back-up roll 17 in contact with upper work roll 11 is raised. The work rolls 1 1 and 12 (and roll chocks and 16) are raised in unison spaced from each other by first drive means 19, first rails 18, vertical support means 20 and stop means 21 until first inside rails 18 are stopped in their highest position by stop means 21A. In this position the wheel means 22 are vertically aligned with second outside rails 28 and 28'.
  • Empty second rails 28 are selectively horizontally aligned with wheel means 22 by movement of the shift car 26 on the roll transfer bed 24 parallel to pass line 10A by third drive means 27. Latch means are then moved along guide means 29 by fourth drive means 32 until it engages the neck 31 of lower work roll 12. Latch means 30 is reversed and moved along a guide means 29 between the empty pair of second outside rails 28, in turn moving the work rolls l1 and 12 out of the mill housing 13 onto the pair of empty second outside rails 28.
  • the shift car 26 is thereafter moved to selectively horizontally a ign the second outside rails 28 supporting the work rolls 11' and 12 (and roll chocks 15 and 16) with the mill housing 13.
  • Latch means 30 is thereby also aligned with a guide means 29' between said second outside rails 28'.
  • Latch means 30 is then moved along guide means 29' between second outside rails 28' moving said work rolls 11 and 12 into mill housing 13 until latch means 30 disengages from neck 31 of lower work roll 12' by use of curved end portion 36 of guide means 29.
  • Latch means 30 is thereafter retracted for subsequent use in roll changing.
  • the pair of work rolls 11' and 12' are then lowered into operating position on first inside rails 18 by first drive means 19 spaced from one another. In this way, the work rolls 11' and 12' can independently seek a predetermined work position.
  • Rolling mill 10 can thereafter continue operation. And the roll transfer bed 24 lowered to floor level and work rolls l1 and 12 rolled away for repair or storage for subsequent use.
  • a rolling mill having upper and lower work rolls forming a pass line, a mill housing surrounding said pass line, a window in each end of said housing, upper and lower roll chocks positioned in each said window and adapted to support said upper and lower work rolls respectively: a pair of spaced apart first inside rails positioned in said windows and extending from one end of said mill housing to the other end, said first inside rails contacting said upper roll chocks; first drive means for raising and lowering said first rails and in turn said upper work roll; vertical support means rigidly attached to said upper roll chocks and slidably attached to said lower roll chocks, and stop means on said vertical support means for raising and lowering said lower work roll spaced from said upper work roll as said first inside rails and upper work rolls are raised and lowered; transport means fastened to portions of said vertical support means and adapted to carry said work rolls with out the mill housing; a roll transfer bed positioned to one side of said rolling mill; second drive means for raising and lowering said roll transfer bed; a shift car positioned
  • one said guide means has a straight end portion adjacent said mill housing; said latch means has a spring means and a pivoted latch finger for engaging neck portions of a work roll against said spring means as said latch means is moved along a straight end portion of one said guide means adjacent said mill housing; and another said guide means has a curved end portion adjacent said mill housing for disengaging said pivoted latch finger as said latch means is moved along said curved portion of said guide means adjacent said rolling mill.
  • each said guide means is comprised of spaced apart channels opening toward each other to form a track; said latch means has roller means engaging said spaced apart channels; and said fourth drive means for moving said latch means along said guide means is comprised of pivoted chain-like lengths and roller means positioned at end portions of said pivoted lengths adapted slidably to move on said guide means.
  • said pull-rod means includes a piston movable in a hydraulic cylinder.
  • a rolling mill having upper and lower work rolls forming a pass line, a mill housing surrounding said pass line, a window in each end of said housing, upper and lower roll chocks positioned in each said window and adapted to support said upper and lower work rolls respectively: a pair of spaced apart first inside rails positioned in said windows and extending from one end of said mill housing to the other end, said first inside rails contacting said upper roll chocks; first drive means for raising and lowering said first inside rails and in turn said upper work roll; a vertical support means rigidly attached to said upper roll chocks and slidably attached to said lower roll chocks, and stop means on said vertical support means for raising and lowering said lower work roll spaced from said upper work roll as said first inside rails and upper work rolls are raised and lowered; transport means adapted to support said work rolls and said roll chocks with out said mill housing, a roll transfer bed positioned to one side of said rolling mill and adapted to carry said transport means with out said mill housing.
  • a rolling mill apparatus as claimed in claim 7 comprising in addition: at leastone pair of spaced apart second outside rails positioned on said transfer bed; guide means positioned on said transfer bed and adjacent each pair of second rails; latch means permanently aligned with saidwork rolls in said mill housing positioned to move on said guide means, and adapted to engage a work roll and move said work rolls and said roll chocks into and out of said mill housing on said first inside rails and second outside rails; and fourth drive means for moving said latch means along said guide means.
  • a rolling mill apparatus as claimed in claim 7 comprising in addition: second drive means for raising and lowering said roll transfer bed.
  • a rolling mill apparatus as claimed in claim 9 wherein: one said guide means has a straight end portion adjacent said mill housing; said latch means has a spring means and a pivoted latch finger for engaging neck portions of a work roll against said spring means as said latch means is moved along a straight end portion of one said guide means adjacent said mill housing; and another said guide means has a curved portion for disengaging said pivoted latch finger as said latch means is moved along said curved portion of said guide means adjacent said rolling mill.
  • each said guide means is comprised of spaced apart channels opening toward each other to form a track; said latch means has roller means engaging said spaced apart channels; and said drive means for moving said rolling millgat least two pairs of spaced apart second rai s positioned on said shift car, each pair of second outside rails adapted for selective alignment with transport means for transporting work rolls into and out of said rolling mill; drive means for moving said shift car substantially parallel to the pass line of said rolling mill; guide means positioned on said transfer bed and said shift car adjacent each pair of second outside rails, one said guide means having a straight end portion adjacent said rolling mill and another said guide means having a curved end portion adjacent said rolling mill; latch means positioned on said roll transfer bed in permanent alignment with work rolls positioned in said mill housing adapted to move along said guide means, and move work rolls into and out of said mill housing on said second outside rails, said latch means having a spring means and a pivoted latch finger for engaging a work roll against said spring means as said guide means moves along said
  • a rolling mill work roll changing apparatus as claimed in claim 14 wherein: said drive means for moving said latch means along said guide means is comprised of pivoted chain like lengths adapted to be slidably moved on said guide means.
  • each said guide means is comprised of spaced apart channels opening toward each other to form a track
  • said latch means has roller means engaging said spaced apart channels
  • said drive means for moving said latch means along said guide means is comprised of pivoted chain-like lengths and roller means positioned at end portions of said pivoted lengths and adapted to slidably move in said guide means.
  • said vertical support means comprises stilt-like members secured at their upper ends on said upper roll chocks and extending downwardly therefrom through openings in said lower roll chocks whereat said transport means are fastened thereto.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US93727A 1970-11-30 1970-11-30 Work roll changers Expired - Lifetime US3699796A (en)

Applications Claiming Priority (1)

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US9372770A 1970-11-30 1970-11-30

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US3699796A true US3699796A (en) 1972-10-24

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US93727A Expired - Lifetime US3699796A (en) 1970-11-30 1970-11-30 Work roll changers

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US (1) US3699796A (it)
JP (1) JPS501470B1 (it)
CA (1) CA920400A (it)
DE (1) DE2159113A1 (it)
GB (1) GB1333483A (it)
IT (1) IT939632B (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864954A (en) * 1973-12-04 1975-02-11 Blaw Knox Foundry Mill Machine Roll changers
FR2375947A1 (fr) * 1976-12-29 1978-07-28 Mannesmann Ag Machine a souder les tubes, a cylindres interchangeables
US20050000263A1 (en) * 2001-08-06 2005-01-06 Reinhard Wittkopf Device for changing the work rolls and the back-up rolls of a strip-mill
CN104323413A (zh) * 2014-09-22 2015-02-04 青岛海奥瑞自动化科技有限公司 烟叶自动展开机
EP3556548A4 (en) * 2017-01-23 2020-05-20 Mitsubishi Heavy Industries Machinery Systems, Ltd. WAVING ROLLER UNIT TRANSPORTING APPARATUS AND WAVING ROLLER UNIT REPLACING APPARATUS AND METHOD
US10882089B2 (en) 2016-03-17 2021-01-05 Fives Dms Rolling mill for metal strip
US11173528B2 (en) * 2017-06-16 2021-11-16 Primetals Technologies Japan, Ltd. Roll changing device
EP3892454A4 (en) * 2019-01-23 2022-02-16 Mitsubishi Heavy Industries Machinery Systems, Ltd. DEVICE AND METHOD FOR REPLACING A ROLLER UNIT

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104445A (en) * 1976-03-01 1977-09-01 Hitachi Ltd Roll changer for rolling machine
JPS52153673U (it) * 1976-05-15 1977-11-21
DE3601258C3 (de) * 1986-01-17 1997-03-13 Kocks Technik Vorrichtung zum Wechseln von Walzgerüsten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749745A (en) * 1903-09-10 1904-01-19 Bethlehem Steel Corp Rolling-mill.
US2037210A (en) * 1934-12-18 1936-04-14 United Eng Foundry Co Roll changing apparatus
GB946427A (en) * 1960-08-18 1964-01-15 United Eng Foundry Co Improvements in and relating to rolling mills
US3504517A (en) * 1966-04-25 1970-04-07 Spidem Ste Nle Apparatus for dismounting and remounting the rolls in a four-high rolling mill
US3566498A (en) * 1968-07-08 1971-03-02 Ishikawajima Harima Heavy Ind Method for changing the rolls of a rolling mill and apparatus for applying the method
US3593554A (en) * 1968-08-09 1971-07-20 Davy & United Eng Co Ltd Rolling mills

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749745A (en) * 1903-09-10 1904-01-19 Bethlehem Steel Corp Rolling-mill.
US2037210A (en) * 1934-12-18 1936-04-14 United Eng Foundry Co Roll changing apparatus
GB946427A (en) * 1960-08-18 1964-01-15 United Eng Foundry Co Improvements in and relating to rolling mills
US3208260A (en) * 1960-08-18 1965-09-28 United Eng Foundry Co Rolling mill
US3504517A (en) * 1966-04-25 1970-04-07 Spidem Ste Nle Apparatus for dismounting and remounting the rolls in a four-high rolling mill
US3566498A (en) * 1968-07-08 1971-03-02 Ishikawajima Harima Heavy Ind Method for changing the rolls of a rolling mill and apparatus for applying the method
US3593554A (en) * 1968-08-09 1971-07-20 Davy & United Eng Co Ltd Rolling mills

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864954A (en) * 1973-12-04 1975-02-11 Blaw Knox Foundry Mill Machine Roll changers
FR2375947A1 (fr) * 1976-12-29 1978-07-28 Mannesmann Ag Machine a souder les tubes, a cylindres interchangeables
US4148206A (en) * 1976-12-29 1979-04-10 Mannesmann Aktiengesellschaft Tube welding machine with exchangeable rolls
US20050000263A1 (en) * 2001-08-06 2005-01-06 Reinhard Wittkopf Device for changing the work rolls and the back-up rolls of a strip-mill
CN104323413A (zh) * 2014-09-22 2015-02-04 青岛海奥瑞自动化科技有限公司 烟叶自动展开机
CN104323413B (zh) * 2014-09-22 2015-12-30 青岛海奥瑞自动化科技有限公司 烟叶自动展开机
US10882089B2 (en) 2016-03-17 2021-01-05 Fives Dms Rolling mill for metal strip
EP3556548A4 (en) * 2017-01-23 2020-05-20 Mitsubishi Heavy Industries Machinery Systems, Ltd. WAVING ROLLER UNIT TRANSPORTING APPARATUS AND WAVING ROLLER UNIT REPLACING APPARATUS AND METHOD
US11235549B2 (en) 2017-01-23 2022-02-01 Mitsubishi Heavy Industries Machinery Systems, Ltd. Corrugating roll unit conveyance apparatus and apparatus and method for replacing corrugating roll unit
US11173528B2 (en) * 2017-06-16 2021-11-16 Primetals Technologies Japan, Ltd. Roll changing device
EP3610960B1 (en) 2017-06-16 2022-08-10 Primetals Technologies Japan, Ltd. Roll changing device
EP3892454A4 (en) * 2019-01-23 2022-02-16 Mitsubishi Heavy Industries Machinery Systems, Ltd. DEVICE AND METHOD FOR REPLACING A ROLLER UNIT

Also Published As

Publication number Publication date
GB1333483A (en) 1973-10-10
JPS501470B1 (it) 1975-01-18
IT939632B (it) 1973-02-10
DE2159113A1 (de) 1972-05-31
CA920400A (en) 1973-02-06

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US3593554A (en) Rolling mills

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Date Code Title Description
AS Assignment

Owner name: BLAW-KNOX COMPANY

Free format text: MERGER;ASSIGNORS:AETNA-STANDARD ENGINEERING COMPANY;BLAW-KNOX CONSTRUCTION EQUIPMENT, INC.,;BLAW-KNOX EQUIPMENT, INC.;AND OTHERS;REEL/FRAME:003926/0382

Effective date: 19781221

Owner name: WHITE CONSOLIDATED INDUSTRIES, INC.

Free format text: MERGER;ASSIGNORS:BLAW-KNOX COMPANY;KELVINATOR, INC.;WHITE-WESTINGHOUSE CORPORATION;AND OTHERS;REEL/FRAME:003926/0372

Effective date: 19781221

AS Assignment

Owner name: BLAW KNOX CORPORATION, ONE OLIVER PLAZA, PITTSBURG

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE SEPT. 27, 1985;ASSIGNOR:WHITE CONSOLIDATED INDUSTRIES, INC., A CORP OF DE.;REEL/FRAME:004532/0913

Effective date: 19851017