US3738142A - Rolling mill - Google Patents

Rolling mill Download PDF

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Publication number
US3738142A
US3738142A US00146228A US3738142DA US3738142A US 3738142 A US3738142 A US 3738142A US 00146228 A US00146228 A US 00146228A US 3738142D A US3738142D A US 3738142DA US 3738142 A US3738142 A US 3738142A
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United States
Prior art keywords
roll
mill
assemblies
supporting
support means
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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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US00146228A
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English (en)
Inventor
J Adair
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United Engineering and Foundry Co
United Engineering Inc
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United Engineering and Foundry Co
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Publication of US3738142A publication Critical patent/US3738142A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Assigned to WEAN UNITED, INC. reassignment WEAN UNITED, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). TO RELEASE SECURTIY DOCUMENT RECORDED AT REEL, FRAME 4792/307 RECORDED FEB. 26, 1987 Assignors: PITTSBURGH NATIONAL BANK
Assigned to UNITED ENGINEERING ROLLING MILLS, INC. reassignment UNITED ENGINEERING ROLLING MILLS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED
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

Definitions

  • the platforms have movable liners that 3,436,945 4/1969 Karnkowski 72 239 span the p
  • a Central area is movable axially Ofthe 3 633 4 2 1972 p k et 72 239 X mill for removing both the work rolls and the backup 3,491,570 1/1970 Beard 72/239 rolls from a position in front of the mill to a position re- 3,540,253 11/1970 Kollek et al. 72/239 mote relative thereto.
  • a still further object of the invention is to provide roll-supporting rail means including means for moving the rail means from an inoperative position out of alignment with the windows of the mill to an operative position in alignment with the windows where they support both the wheels of a bar that interconnects the opposite bearing chock assemblies of one of the rolls and wheels of the opposite bearing chock assemblies of the one roll.
  • Another object of the present invention is to provide a side shifting assembly for receiving an old set of rolls from the mill and for replacing them with a new set of rolls, in combination with means extending between and connected to the opposite bearing chockassemblies of one of the rolls of the mill, support means extending between said housing having a surface for supporting said connecting means, and means for engaging one of said roll assemblies for removing said roll assembly from said mill.
  • FIG. 1a is an elevational side view of a rolling mill incorporating the features of the present invention showing in full line a set of work rolls about to be removed from the mill by a first tractor and a second tractor employed for removing the backup rolls in position to accomplish this operation after the work rolls have been removed and side shifted, and in phantom line, a replacement set of work rolls ready to be inserted into the mill,
  • FIG. 1b is a continuation of FIG. 1i: illustrating the backup roll shown in FIG. 1a retracted fromthe mill to the roll shop area and illustrating the center support of the side shifter illustrated in FIG. la in its retracted position in readiness to receive a new roll set of work rolls or the stool for the backup rolls,
  • FIG. 2 is a view similar to FIG. la with certain parts broken away for clarity,
  • FIG. 3 is a section view taken on lines 3-3 of FIG.
  • FIG. 4 is a section view taken on lines 4-4 of FIG.
  • FIG. 5 is an end view of the side shifter illustrated in FIG. 1a showing in phantom old and new work roll sets, and in full line the stool for the backup rolls,
  • FIG. 6 is a plane view of the side shifter shown in FIG. 5 without the stool.
  • FIG. 7 is an enlarged sectional view of a portion of FIG. 5, but showing the side shifter moved sideways.
  • FIGS. 1a, 2, 3 and 4 there is illustrated a rolling mill stand comprising a pair of spaced-apart upright housings 11 and 12, the housings having customary windows for receiving work roll assemblies 13 and 14, each of which will be supported and backed up by a backup roll assembly, only the lower backup roll assembly 15 being shown in the drawing.
  • the housings in accordance with general practice are supported on parallel bed plates 18 and 19 that extend in a direction parallel to the axes of the rolls.
  • the upper work roll 13 is rotatably supported in bearing chock assemblies 21 mounted on the journals on its opposite ends and which, as shown in FIG. 4, assume a generally rectangular shape.
  • the bearing chock assemblies provided for the lower work roll 14 are somewhat differently constructed and, as best shown in FIG. 2, consist of generally square-shaped bearing chock assemblies 22, which, as shown in FIG. 4 at their lower portions, have wing portions 26 which extend outward from the main vertical portion of the chock assemblies and which portions receive wheels 27 that are positioned so as to rotate about horizontal axes.
  • the housings 11 and 12 have inward projecting portions 28 for receiving the adjacent surfaces of the bearing chock assemblies 22 of the lower work roll
  • the bearing chock assemblies 22 of the lower work roll 14 are interconnected by a pair of parallel extending bars 30, which are shown with greater clarity in FIG. 3 in connection with the operator side bearing chock assembly.
  • To the lower surface of the bars 30 there are provided at each end two sets of wheels 31 arranged adjacent their opposite ends, each set consisting of three wheels each; whereas, the wheels 27 associated with the lower work roll chock assemblies 22 are made up into two sets for each assembly in which each set comprises two wheels.
  • FIG. 2 In the center of the mill, as one views FIG. 2, there are provided two generally upright rails assemblies 32 and 33 which extend between the opposed housings 1 1 and 12 on either side of the plane containing the work rolls and backup rolls, and which have a length approximating that of the face of the work rolls.
  • The'rail assemblies 32 and 33 include horizontally disposed rails 34 arranged at the upper inward ends, and, at their lower ends, they are provided with trunnion shafts 35 arranged in a direction parallel to the axes of the rolls which allow the rail assemblies 32 and 33 to be pivoted in a direction towards and away from the vertical center line of the mill, as one views FIG. 4.
  • FIG. 4 Actually, FIG.
  • FIG. 4 shows in phantom the retracted position of the rail assemblies 32 and 33 and in full line the extended or operating position in which the rails 34 are positioned directly under the wheels 31 of the interconnecting bars 30.
  • the rail assemblies 32 and 33 are moved between these two positions by individual piston cylinder assemblies 38.
  • the upper work roll chock 21 is shown supported by the lower work roll chock 22. This support is accomplished by a pair of stools 39, it being appreciated that a similar pair of stools will be provided for the operating side bearing chock assemblies of the work rolls 13 and 14.
  • FIGS. 1a, lb, 2, 5, 6 and 7 which comprise a pair of horizontal supporting beams 43 that serve to support a superstructure consisting of vertical columns 44 which at the top support a horizontal substructure 45 arranged approximately at the mill floor line, only one of which beams is shown in the drawings extending in a direction away from the mill on the operators side and parallel to the plane containing the axes of the roll.
  • This entire assembly is retractable from a position in front of the mill to a position remote therefrom into the adjacent bay that constitutes the roll shop by virtue of being slidable over the beams 43 as advanced by a tractor 46.
  • the tractor consists, in part, of a motor 47 which drives a gear, not shown, about a vertical axis, which, in turn, meshes with racks mounted on the beam 43 to constitute a rack and pinion design and through which means the tractor 46 is advanced to and from the mill.
  • the side shifter takes the form of a top platform 48 which supports a second tractor 49 made of a generally similar construction as the tractor 46 and consists of a motor 51 including a gear unit having a gear rotatable by a vertical axis, not shown, which engages a pair of racks mounted on the platform 48 which allows the tractor to be advanced toward and away from the mill.
  • the tractor as illustrated consists of a pair of hooks 52 mounted approximately in line with the lower work roll chock 22 to which the hooks will engage, as will be more fully explained hereinafter.
  • the side shifter takes the form of an independent platform 53 which is best shown in FIGS. 5, 6 and 7.
  • the platform 53 is made up in the form of a box having at its two outer ends two uprights 54 to which there is mounted on the lower portions liners arranged in a direction so that the platform 53 may move to the left or right as one views FIGS. 5 and 6.
  • This movement with respect to the side shifter is guided by projections formed on the end portions, not shown, of the liners 70, the liners 70 sliding over a liner 55 secured to the subplatform 45.
  • the upright members 54 of the platform 53 are provided at their upper surfaces with rails 58 which serve to support the wheels 27 and 32 of the work roll assembly 14.
  • the tractor 49 is adapted to be advanced from the far side of the subplatform 45 to a position where it may be brought adjacent to the operating side of the mill and where its pair of hooks 52 can be caused to engage a pair of cooperative hooks provided on the lower work roll chock 22 and which, in FIG. 3, has been identified by the reference character 61.
  • FIGS. 5 and 6 Intermediate the mill area and roll shop area, and located in the latter, between which the platform 53 must pass when retracted from the mill is the other part of the side shifting assembly, which is best illustrated in FIGS. 5 and 6.
  • the platform 53 there are arranged two support areas 62 and 63. These support areas at their top have a similar guiding construction to that provided with respect to the platform 53 and consist of liners 64 that support the upright members 54 of the platform 53 or a similar platform 65, which is illustrated in FIGS. 5 and 6 at the right as one views this figure. It will be appreciated that there are provided in fact only two platforms similar to 53 and 65 and that they shift from left to right and right to left, as one views FIGS. 5 and 6, so that at any given time these platforms are either supported by one or the other of the support areas 62 and 63 and the subplatform 45.
  • the platforms 53 and 65 are adapted to be selectively interconnected by quickly insertable pairs of links 66, the platform 65 being connected by a similar pair of links 67 to a guide 68 which, in turn, is connected to a piston cylinder assembly 69 which furnishes the traverse movement for the platforms 53 and 65.
  • FIG. 5 illustrates, there is a space or a gap between the sup port areas 62 and 63 on either side of the platform 53.
  • the platforms 53 and 65 are provided with the liners 70 arranged at the ends of the platforms and come into contact with the liners 64 of the support areas 62 and 63, by which means the platforms 53 and 65 are supported.
  • the length of the liners 70 are such that the liners will come into engagement with the subplatform 45 or either the supports 62 and 63, depending on which direction the platforms 53 and 65 are moving.
  • this beam 72 is always mounted in the mill when the backup roll is in the mill and is adapted to be removed with the rolls during the roll changing of the backup rolls.
  • FIG. 5 there is shown with respect to the platform 65 a backup roll changing stool 73 which is adapted to be supported by the platform 65.
  • the stool Before the stool can be so positioned it is first placed on the platform 65 in the roll shop and then, by the tractor 46, is brought to the side shifting area for side shifting to the support area 63, where it is shown in FIG. 5, to await the removal of the old work roll set.
  • the transfer to the area 63 is accomplished by inserting the links 66 to interconnect the two platforms 53 and 65.
  • the old roll set is positioned on the platform 53 in a manner yet to be explained as shown in FIG. 5 and with the links still connected to the platforms 53 and 65.
  • the platforms are shifted to the left which places the old roll set in the support area 62 and the stool 73 on the subplatform 45.
  • the links 66 are uncoupled.
  • the stool 73 can be brought to the mill, first by operating the tractor 46 which will move the substructure 45 and, hence, the platform 65, and then by operation of the tractor 49 to position the platform 65 adjacent to and directly in front of the mill.
  • the tractor 46 will engage the beam 72 and remove both backup roll assemblies to the roll shop, which position is shown in FIG. lb.
  • the platform 53 is in the center and that the platform 65 is at the right as viewed in FIGS. 5 and 6.
  • the platform 65 will receive a pair of new work roll assemblies, the exact complement of the assemblies to be removed from the mill and which will be supported by stools similar to the stools 39.
  • the new pair of roll assemblies will have been brought to this position by placing them on the platform 65 in the roll shop area and then transferring them for side shifting to the support area 63.
  • the platform 53 Prior to the actual side shifting of the new roll set to the support area 63, the platform 53 will remain supported by the support area 62 and be interconnected to the platform 65 by the links 66 once the platform 65 has been brought to the side shifting area.
  • the transfer of the subplatform 45 from the roll shop area to the side shifting area and then to the mill area is effected by the advancement of the tractor 46 which, as previously noted, advances the subplatform 45, which may be supporting one or the other of the platforms 53 or 65.
  • the tractor 49 With the new work roll set so positioned and the platform 53 supported by the subplatform 45and the links 66 uncoupled, the tractor 49 will be advanced to the position shown in FIG. la, where the tractor 49 engages the work roll hooks 61 of the lower work roll chock 22.
  • the tractor 49 When this is accomplished, the tractor 49 will then be retracted to a position where it will be brought entirely on the platform 53, as shown in phantom in FIG. la.
  • the tractor 46 will again be operated to bring the side shifter assembly into a position where the platform 53 is centrally disposed with respect to the platform 65 or into the position shown in FIGS. 5 and 6 to allow a side shifting to occur on operation of the piston cylinder assembly 69.
  • the link 66 must be inserted to interconnect the platforms 53 and 65 after which the cylinder 69 can be operated to shift the old or worn roll set to the left where the platform 53 will be supported by the support area 62 and the platform 65 will assume a supporting position on the subplatform 45.
  • the tractor 46 will again be operated to advance the subplatform 45 to the position illustrated in FIGS. 1a and 2 from which the tractor 49 will be operated to move the new rolls from the phantomline position shown in FIG. la into the full-line position and within the mill.
  • the subplatform 45 may be retracted again to where the worn or old roll set can be transferred from the support area 62 back to the platform 45, after which the old roll set can be transferred to the roll shop area.
  • said work roll assemblies including bearing chock assemblies mounted on their opposite ends and received in said windows, means extending between and connected to the opposite bearing chock assemblies of one of said roll assemblies and including two separate bars arranged on opposite sides of said one roll assembly,
  • support means extending between said housings including two separate support members, ecah having surfaces for supporting a different one of said bars and each having an operative and an inoperative position, means for bringing said support members from their inoperative positions remote from said bars into their operative positions where they assume a supporting relationship with a different one of said bars, and
  • a work roll assembly platform arranged at the operator side of said mill having one of its ends adjacent the outside of said window of said operating housing and adapted to receive and support the wheels of said bearing chock assemblies and bars, and wherein the relative space between the wheels of each cooperating set is such that the respective ends of the roll assemblies are supported at all times by at least one of the wheels of each set as the roll assemblies are removed from the mill and pass through said spaces.
  • said mill including a housing having a window therein that receives said roll assemblies
  • said side shifting assembly comprising three discrete and spaced-apart roll supporting members, one arranged in front of said window in a plane containing the axes of said roll assemblies when mounted in said mill and the other two arranged parallel to and on either side of said first'roll supporting memher,
  • said support means including means movable with said support means and arranged to bridge said spaces between said members to provide a support for said support means when moving through said spaces, and means for moving a roll assembly to and from said window onto one of said support means positioned in front of said window.
  • said support means each includes a pair of tracks for supporting a pair of surfaces provided on one of said roll assemblies
  • said means for bridging said spaces comprising liners arranged at the opposite sides of each support means and adjacent said slides having a length greater than said spaces between said member.
  • said means for effecting movement of said support means includes a power means connected to one of the outside support means.
  • said roll assemblies comprise work roll assemblies and wherein said mill includes a backup roll assembly for each work roll assembly
  • said central supporting members including means for engaging one of said backup rolls to effect said removal.
  • An apparatus including a stool supportable by one of said support means for transferring to said mill after the work roll assemblies thereof have been removed,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
  • Paper (AREA)
US00146228A 1971-05-24 1971-05-24 Rolling mill Expired - Lifetime US3738142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14622871A 1971-05-24 1971-05-24

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US3738142A true US3738142A (en) 1973-06-12

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US00146228A Expired - Lifetime US3738142A (en) 1971-05-24 1971-05-24 Rolling mill

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US (1) US3738142A (es)
JP (2) JPS5143031B1 (es)
AU (1) AU450643B2 (es)
BR (1) BR7203255D0 (es)
CA (1) CA957879A (es)
DE (1) DE2224486A1 (es)
ES (1) ES403103A1 (es)
FR (1) FR2138686B1 (es)
GB (2) GB1380999A (es)
NL (1) NL7206957A (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162626A (en) * 1978-05-03 1979-07-31 Wean United, Inc. Rolling mill
US4771626A (en) * 1986-03-14 1988-09-20 Nippon Steel Corporation Apparatus for roll-changing
US20180290417A1 (en) * 2014-12-04 2018-10-11 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218953B1 (es) * 1973-02-22 1975-04-04 Secim
JPH11123417A (ja) * 1997-10-22 1999-05-11 Mitsubishi Heavy Ind Ltd チョックレス圧延機のロール組替方法及び装置
ITMI20010566A1 (it) * 2001-03-19 2002-09-19 Fin Omet S R L Gruppo goffratore e relativo sistema di movimentazione
CN108425519A (zh) * 2017-02-14 2018-08-21 上海兰庆新材料技术股份有限公司 一种便于安装和拆卸的多涂头共用真空吸附装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436945A (en) * 1967-02-21 1969-04-08 Textron Inc Roll-changing apparatus for a rolling mill
US3491570A (en) * 1965-06-22 1970-01-27 Davy & United Eng Co Ltd Roll changing rig
US3540254A (en) * 1968-03-20 1970-11-17 United States Steel Corp Apparatus for removing and replacing rolling mill drive spindles
US3540253A (en) * 1967-10-30 1970-11-17 Blaw Knox Co Roll changers
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
US3638468A (en) * 1968-10-02 1972-02-01 Hitachi Ltd Roll-changing means for four-high rolling mill

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501880U (es) * 1973-05-04 1975-01-09

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491570A (en) * 1965-06-22 1970-01-27 Davy & United Eng Co Ltd Roll changing rig
US3436945A (en) * 1967-02-21 1969-04-08 Textron Inc Roll-changing apparatus for a rolling mill
US3540253A (en) * 1967-10-30 1970-11-17 Blaw Knox Co Roll changers
US3540254A (en) * 1968-03-20 1970-11-17 United States Steel Corp Apparatus for removing and replacing rolling mill drive spindles
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
US3638468A (en) * 1968-10-02 1972-02-01 Hitachi Ltd Roll-changing means for four-high rolling mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162626A (en) * 1978-05-03 1979-07-31 Wean United, Inc. Rolling mill
US4771626A (en) * 1986-03-14 1988-09-20 Nippon Steel Corporation Apparatus for roll-changing
US20180290417A1 (en) * 2014-12-04 2018-10-11 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate
US10696003B2 (en) * 2014-12-04 2020-06-30 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate

Also Published As

Publication number Publication date
FR2138686B1 (es) 1974-12-20
JPS5220957A (en) 1977-02-17
NL7206957A (es) 1972-11-28
CA957879A (en) 1974-11-19
BR7203255D0 (pt) 1973-06-12
FR2138686A1 (es) 1973-01-05
JPS5143031B1 (es) 1976-11-19
AU4212972A (en) 1973-11-15
ES403103A1 (es) 1976-01-01
GB1380999A (en) 1975-01-22
AU450643B2 (en) 1974-07-18
GB1381000A (en) 1975-01-22
DE2224486A1 (de) 1972-12-07

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Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

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Owner name: PITTSBURGH NATIONAL BANK

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Effective date: 19880610