US3566498A - Method for changing the rolls of a rolling mill and apparatus for applying the method - Google Patents

Method for changing the rolls of a rolling mill and apparatus for applying the method Download PDF

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Publication number
US3566498A
US3566498A US791029A US3566498DA US3566498A US 3566498 A US3566498 A US 3566498A US 791029 A US791029 A US 791029A US 3566498D A US3566498D A US 3566498DA US 3566498 A US3566498 A US 3566498A
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United States
Prior art keywords
rolls
roll
vertical
horizontal
changing
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Expired - Lifetime
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US791029A
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English (en)
Inventor
Eiichi Kato
Yukio Ohno
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IHI Corp
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IHI Corp
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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
    • 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
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B2013/106—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for sections, e.g. beams, rails
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53978—Means to assemble or disassemble including means to relatively position plural work parts

Definitions

  • FIG. 1 METHOD FOR CHANGING THE ROLLS OF A ROLLING MILL AND APPARATUS FOR APPLYING THE METHOD 6 Sheets-Sheet 1 Filed Jail. 14, 1969 FIG. 1
  • the upper cross beam is raised and the lower cross beam is pulled down by means of the screw adjusting device so that the roll replacement can be made with ease in the roll stand.
  • the vertical rolls are suspended on the chock of the upper horizontal roll or placed on the lower horizontal roll, and a device for pushing in and drawing out is made to engage with the chock for the upper and lower horizontal rolls, and then sets of all rolls can be changed at the same time.
  • One of these two methods is intended to promptly change the horizontal rolls in view of the far more frequent chances for changing the horizontal rolls than those for changing the vertical rolls.
  • sets of the upper and lower horizontal rolls are simultaneously pulled out from or inserted into the roll stand by means of an electrical device or a hydraulic device and the changing of the vertical rolls is done with a C hook or other special changing jig.
  • Such special changing jig is used after the upper horizontal roll (a) provided in the housing (72) as shown in FIGS. 7 and 8 was raised.
  • the vertical rolls (d) are raised up to the position United States Patent 0' ice for changing by means of special device, then the changing jig is inserted into the roll stand after determining the position of such changing jig by means of a side guide (g), and connected to the vertical rolls, so that the vertical roll (0) on the operation side and the vertical roll (d) on the driving side can be pulled out separately onto the table roller (f).
  • the other method is to change both horizontal and vertical rolls at the same time by incorporating the horizontal and vertical rolls into the inner stand on the carriage and pulling them out from or inserting them into the outer stand
  • Such conventional methods as a roll stand changing has the following disadvantages:
  • the second method which utilizes a C hook or special changing jig also has such disadvantage that its operation is complicated, that considerable skill is required in the handing of the special changing jig or C hook and that a crane is required to be employed.
  • the other method utilizing the inner stand has the following disadvantages:
  • This method comprised placing the upper and lower horizontal rolls and vertical rolls together on a truck, moving aside the device for adjusting the vertical rolls and the supporting frame for the device for adjusting the vertical rolls whereby to facilitate the passage of the vertical roll, providing a truck to shift aside the said horizontal and vertical rolls and thus replacing said horizontal and vertical rolls with new ones.
  • this method is also disadvantageous in the following respects.
  • the upper and lower horizontal rolls are rotataby supported on the bearing by means of the chocks suspended and supported on the upper and lower beams which can be moved vertically by the vertical adjustment device.
  • While the vertical rolls rotatably supported on the bearings by means of the chocks placed on the side cross bar can be moved vertically by means of the said cross bar which can be moved vertically by the hydraulic cylinder attached to a suitable place on the housing and also can be moved horizontally by the horizontal adjustment device, when the rolls are changed the vertical rolls are adjusted on a horizontal and vertical direction, and placed on the chocks of the lower horizontal roll in such a manner that the vertical rolls can come in and out together with the lower horizontal roll by introducing and pulling out the upper and lower horizontal rolls from the operating side of the rolling mill.
  • the upper and lower slide rails on the said operating side at a right angle to the operating line and at a suitable distance from the said housing, movably mounted a side shifter between the said slide rail and the housing at a right angle to the slide rail.
  • the new horizontal and vertical rolls for replacement are placed on the side shifter in advance by means of the inserting and on the said pulling out device for the rolls movable along the said slide rail and side shifter.
  • the 'wear horizontal rolls and vertical rolls are pulled on from the housing which are to be replaced onto the said side shifter, inserting the new horizontal and vertical rolls previous y placed on the side shifter which are moved the side shifter again and inserted onto the housing so that the said wear horizontal and vertical rolls are shifted to the position at which comes to the extension of the slide rail when the device for insertion and pulling out of the rolls is returned to a required position, and the wear horizontal and vertical rolls are pulled out onto the slide rails by means of the pulling and inserting device.
  • FIG. 1 and FIG. 2 are the drawings roughly describing the feature of a rolling mill incorporating the apparatus for changing the rolls according to the present invention.
  • FIG. 3 to FIG. 6 are drawings giving general descriptions of the apparatus for changing the rolls of the rolling mill according to this invention.
  • FIG. 7 and FIG. 8 are drawings describing the conventional method of changing the rolls of the rolling mill.
  • the housings (15) (16) having an oblong window are arranged perpendicularly side by side and the upper horizontal roll (1) and the lower horizontal roll (2) are provided above and below in the window portion of the said housing (15) (16).
  • the journals of the said upper horizontal roll extending to the operating side (X) and the driving side (Y) are rotatably supported on the bearings (3) (3) by means of the chocks (6).
  • the said chocks (5) (6) are connected to a beam (9) provided at the lower ends of the screws (11) (11) on the operating and driving sides which are movable vertically by means of the nuts (13) (13) attached to the housings (16).
  • the upper horizontal roll (1) is moved vertically together with the beam (9) and the chocks (5) (6 by the vertical movement of the screws (11) (11) .and such vertical movement can be adjusted by adjusting devices (31) (31).
  • the journals of the lower horizontal roll extending to the operating and driving sides are ro- 4 tatably supported on the bearings (4) (4) by means of the chocks (7) (8).
  • the said chocks (7 (8) are placed on the upper surface of the beam (10) supported on the upper end of the screws (12) (12) which can be moved vertically by means of the nuts (14) (14) attached to the housings (15) (16).
  • the lower horizontal roll (2) is moved vertically together with the beam (10) and the chocks (7) (8) by the vertical movement of the screws
  • the vertical rolls (17) (18) on the operating and driving sides are adjusttably arranged between the said horizontal rolls 1) (2) in such a manner that they have their rotating shafts on the plane including the upper and lower horizontal roll journals.
  • the vertical roll (17) on the operating side is supported in the chock (21) by means of the shaft (20) and the bearing (19), the said chock (21) being arranged on the upper surface of the side cross bar (25) supported on its lower portion by a hydraulic cylinder (28) fixed to the housing (15).
  • the vertical roll (18) on the driving side is supported in the chock (21) by means of the shaft (20) and the bearing in the same manner as the vertical roll (17) on the operating side.
  • Both the vertical rolls (17) (18) are supported in such a manner as to be moved vertically in relation to the housings (1-5) (16). They are also so supported as to be adjustable in the horizontal direction in relation to the housing (15) (16) by means of the adjusting devices (29) (30), screws (22) (22), nuts which are not shown in the drawing, and the hooks (23) (23).
  • a wedge (27) is arranged so as to be moved into the passage of the said side cross bar (25) by the hydraulic cylinder (26) to support the lower portion of the said side cross bar (25).
  • the said wedge is moved when the position of the vertical rolls (17) (18) has been determined to fix the side cross bar (25) to the housings (15) (16).
  • the cross bar (25) is lowered by the hydraulic cylinder (25)
  • the vertical rolls (17) (18) are simultaneously lowered as being placed on the side cross bar ('25) and finally supported on the chocks (7) (8) for the lower horizontal roll (2).
  • a slide rail (35) is provided at a suitable distance from the housing (15) and in the direction normal to the rolling line of the rolling mill.
  • the said slide rail (35) being used to slide the lower horizontal roll (2) whose upper surface having substantially the same height as the upper surface of the beam (10).
  • the slide rail (34) for sliding the upper horizontal roll (1) is provided, the space between the said slide rail (34) and the housing (15) being somewhat greater than that between the slide rail (35) and the housing (15).
  • An inserting and pulling out device (36) having rotatably mounted jaws (43) (44) at its end and designed for inserting and pulling out of the upper horizontal roll (1) and the lower horizontal roll (2) is placed on the slide rail (35) so that the device can be moved by the driving device (41) to slide the upper and lower horizontal rolls (1) (2).
  • the rails (39) (40) are provided between the housing (15) and the slide rail (35) and a slide shifter (37) having the rail surface (42) (42), whose height is correspond to that of the slide rails (34) (35), is movably placed on the said rails (39) (40), the said side shifter (37) being movable in the direction normal to the slide rails (34) (35) by means of the hydraulic cylinder (38) arranged in parallel with the said rails (39) (40).
  • the upper horizontal roll (1) and the lower horizontal roll (2) slidable on the slide rails (34) (35) are slided by the inserting and pulling out device from the slide surfaces (42) (42) of the said shifter (37) to the slide surface (9) of beam (9) at the window of the housings (15 (16) and the changing rail (33). Also, the upper horizontal roll (1) and the lower horizontal roll (2) position at the window are reversely moved on the slide rails (34) (35) by means of the slide surfaces (42) (42) of the side shifter (37).
  • the apparatus for changing the rolls according to this invention has the feature as described above.
  • the vertical rolls (17) (18) are moved to a suitable position on the chocks (7) (8) of the lower horizontal roll (2) by means of the screws (22) (22) which are driven by the action of the horizontal adjusting devices, and then the wedge (27) is moved to the outslide by the hydraulic cylinder (26) so that the side cross bar (25) is lowered by the hydraulic cylinder (28) for a full stroke of the said hydraulic cylinder and the vertical rolls (17) (18) are simultaneously lowered as being placed on the side cross bar (25).
  • the lower surfaces of the chocks (21) (21) encasing the vertical rolls (17) (18) come to be supported on the upper surfaces of the chocks (7) (8) of the lower horizontal roll (2) after the cross bar (25) has been lowered for a required distance.
  • the upper and lower horizontal rolls (1) (2) are raised or lowered to the required changing position, namely, the position corresponding to the slide surfaces (42) (42) of the side shifter (37) by means of the screws (11) (11) and (12) (12) and the beams (9) and which are driven by the action of the adjusting devices (31) (31) and (32) (32) thereby causing the vertical rolls (17) (18) to move lower together with the lower horizontal roll (2) to the changing position.
  • the upper horizontal roll (1) comes to be supported on the slide surface (9) of the beam (9) and the lower horizontal roll (2) and the vertical rolls 17 (18) also comes to be supported on the changing rail (33) incorporated in the beam (10). Therefore, it is possible to change the upper and lower horizontal rolls (1) (2) and the vertical rolls (17 (18) can be changed at the same time.
  • the new upper and lower horizontal rolls and the new vertical rolls to replace the old ones are placed on the slide rails (34) (35) at the positions (A) and (B).
  • the inserting and pulling out device (36) for the rolls is placed at the position (G).
  • the side shifter (37) is slided on the rails (39) (40) by the hydraulic cylinder (38) so that the center may be shifted from the position (E) (F) to the position (D) (E).
  • the inserting and pulling out device (36) is moved on the slide rail (35) by the driving device (41) together with the driving device itself.
  • the new lower horizontal roll and the new vertical rolls are slided on the slide rail (35) while the portion to which the jaws (43) (44) are fixed is between the position (G) and the position (H) and the new upper and lower horizontal rolls and vertical rolls are slided while the fixing portion for the jaws (43) (44) is between the position (H) and the position (I), on the slide rails (34) (35) so that they are finally placed on the side shifter (37) at the position (D) (E).
  • the central portion of the side shifter (37) carrying the new horizontal rolls and vertical rolls is moved from the position (D) (E) to the position (C) (D) and the inserting and pulling out device (36) is moved by the guide of the driving device (41) on the slide surface (42) of the side shifter (37) until the portion to which the jaws (43) (44) are fixed is moved from the position (I) to the position (J).
  • the jaw (43) is hooked up with the chock (5) for the upper horizontal roll (I) raised by the vertical adjusting devices (31) (31) and the jaw (44) hooked up under to the chock (7 for the lower horizontal roll (2) lowered by the vertical adjusting devices (32) (32).
  • the driving device (41) is rotated reversely to return the inserting and pulling 6' out device (36) so that the portion to which the jaws (43) (44) are fixed is returned from the position (J) to the position (I).
  • the upper and lower horizontal rolls (1) (2) and the vertical rolls (17) (18) together with the chocks (5) (6) (7) (8) (21) (21) are pulled out from the position (K) to the position (L) and placed on the side shifter (37
  • the side shifter (37 is returned on the rails (39) (40) from the position (C) (D) to the position (D) (E) by the hydraulic cylinder (38).
  • the jaws (43) (44) are hung on the chocks for the new upper and lower horizontal rolls previously placed on the side shifter (37 and the inserting and pulling out device (36) is moved again by the driving device (41) from the position (I) to the position (J).
  • the new horizontal rolls and vertical rolls on the side shifter (37) are inserted from the position (L) into the position (K) together with the chock.
  • the jaws (43) (44) secured at the end of the inserting and pulling out device are removed from the chocks for the new upper and lower horizontal rolls, and the inserting and pulling out device (36) is returned by the reverse rotation of the driving device (41), so that the part to which the jaws are fixed is moved from the position (I) to the position (I).
  • the side shifter (37) is moved again by the hydraulic cylinder (38) from the position (D) (E) to the position (C) (D), and the jaws (43) (44) at the end of the inserting and pulling out device (36) are hooked up with the chocks (5) (7) for the said upper and lower horizontal rolls in order to take out from the side shifter (37 to the roll shop the said upper and lower horizontal rolls and vertical rolls which have been pulled out onto the side shifter (37
  • the inserting and pulling out device (36) is further returned by the reverse rotation of the driving device (41) from the position (I) to the position (H) and the upper and lower horizontal rolls and vertical rolls are transferred from the side shifter (37) onto the slide rails (34) and moved from the position (L) to the position (A).
  • the jaw (43) for the upper horizontal roll is removed from the chock (5) at the central position (A) of the roll while the lower horizontal rolls and the vertical rolls are returned by the inserting and pulling out device from the position (A) to the position (B) and the jaw (44) is taken off from the chock (7 when that part of the inserting and pulling out device to which the jaw (44) is fixed is moved from the position (H) to the position (G).
  • the upper and lower horizontal rolls and vertical rolls are transferred onto the floor at the central position (A) (B) of the rolls by means of the overhead travelling crane and serviced there.
  • the side shifter (37) When the upper and lower horizontal rolls and vertical rolls are transferred from the side shifter (37) onto the slide rails (34) (35) and their centers are shifted from the position (L) to the position (A), the side shifter (37) is slided on the rails (39) by the hydraluic cylinder (38) thereby shifting their centers from the position (C) (D) to the position (E) (F) and preparing them for the rolling operation.
  • the position of the roll is determined in the stand when the center of the new roll is inserted as far as the position (K) and that part of the inserting and pulling out device to which the jaw is fixed is returned from the position (I) to the position (I).
  • the positions of the side cross bar (25) and the vertical rolls (17 (18) are determined where the hydraulic cylinder (28) reaches its upper limit when the side cross bar (25) is raised by the hydraulic cylinder (28) thereby raising the vertical rolls (17 18) together with the chocks (21) (21), and the side cross bar (25) is fixed to the housings (15) (16) with the wedges (27) actuated by the hydraulic cylinder (26) Then the upper and lower horizontal rolls (1) (2) are lowered or raised together with the beams (9) (10) by means of the screws (11) 7 (12) by the vertical adjusting devices (31) (31) and (32) (32) respectively, thus completing the entire chang ing operation.
  • a method for changing the rolls of a rolling mill having the upper and lower horizontal rolls and vertical rolls in the housings comprising, suspending and supporting the chocks rotatably supporting the upper and lower horizontal rolls by means of the bearings on the upper and lower beams which are vertically movable by the upper and lower vertical adjustment devices provided in the housing, supportably arranging the chocks of the vertical rolls on the chocks for the lower horizontal roll in such a way that the vertical rolls are moved in and out together with the lower horizontal roll as the upper and lower horizontal rolls are moved in and out from the operating side by vertically moving the chocks for the vertical rolls by means of the cross bar vertically movably by the action of the cylinder attached to the required position on the housings and 'by horizontally moving the said chocks for the vertical rolls by means of the horizontal adjustment device, providing slide rails on the said operating side in the direction normal to the operation line and at a suitable distance from the said housing, movably arranging a side shifter between the said slide rails and the housing in the direction
  • An apparatus for changing the rolls of a rolling mill having upper and lower horizontal rolls and vertical rolls in the housing comprising chocks supporting the upper and lower horizontal rolls by means of the bearings, such chocks being suspended and supported so as to be vertically movable on the upper and lower beams by the vertical adjustment device mounted on the suitable place of the housing, the chocks for the vertical rolls supported on the cross bar vertically movable freely by the cylinder mounted on a suitable place of the housing and vertical movable by the horizontal adjustment device, the said chock for the vertical rolls being supportably arranged on the chocks for the upper and lower horizontal rolls so that the vertical rolls come in or out on the operating side as the horizontal rolls are pulled in or out on the opera-ting side, the rails for sliding the upper and lower horizontal rolls provided at the required heights on the said operating side in the direction normal to the operating line and with suitable space between such rails and the said housing, a side shifter provided movably by the cylinder or other driving source in the direction normal to the said slide rails, such side shifter being

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  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US791029A 1968-07-08 1969-01-14 Method for changing the rolls of a rolling mill and apparatus for applying the method Expired - Lifetime US3566498A (en)

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JP4800968 1968-07-08

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DE (1) DE1916806A1 (de)
FR (1) FR1600389A (de)
GB (1) GB1243561A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699796A (en) * 1970-11-30 1972-10-24 Blaw Knox Co Work roll changers
US3738142A (en) * 1971-05-24 1973-06-12 United Eng Foundry Co Rolling mill
US3800648A (en) * 1972-08-10 1974-04-02 Watanabe Kekkosho Kk Apparatus for interchanging sheet-metal slitting equipments
US3818567A (en) * 1973-03-29 1974-06-25 American Chain & Cable Co Apparatus for positioning journal assemblies in pulverizers
US3949586A (en) * 1973-10-26 1976-04-13 Klaus Neumann Rolling mill frame, in particular a universal rolling mill frame
US4005594A (en) * 1976-03-03 1977-02-01 Demag Aktiengesellschaft Roll changing mechanism for rolling mills
US4136545A (en) * 1976-06-29 1979-01-30 Hille Engineering Company Limited Rolling mill stand
DE2929423A1 (de) * 1979-07-20 1981-02-05 Schloemann Siemag Ag Einrichtung zum walzenwechsel der horizontal- und vertikalwalzensaetze bei universalwalzgeruesten
US4706484A (en) * 1986-07-28 1987-11-17 United Engineering Rolling Mills, Inc. Universal rolling mill
US4771626A (en) * 1986-03-14 1988-09-20 Nippon Steel Corporation Apparatus for roll-changing
US4823584A (en) * 1986-05-30 1989-04-25 Davy Mckee (Sheffield) Limited Roll change arrangement for beam mill stand
US20170100757A1 (en) * 2014-02-11 2017-04-13 Sms Group Gmbh Tool changeover system and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2701571C2 (de) * 1977-01-15 1984-04-19 SMS Schloemann-Siemag AG, 4000 Düsseldorf Universalwalzgerüst mit Wechselkassette für den Walzensatz
EP0291719B1 (de) * 1987-05-16 1992-07-29 Sms Schloemann-Siemag Aktiengesellschaft Universalwalzgerüst mit anstellbaren Horizontal- und Vertikalwalzensätzen

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699796A (en) * 1970-11-30 1972-10-24 Blaw Knox Co Work roll changers
US3738142A (en) * 1971-05-24 1973-06-12 United Eng Foundry Co Rolling mill
US3800648A (en) * 1972-08-10 1974-04-02 Watanabe Kekkosho Kk Apparatus for interchanging sheet-metal slitting equipments
US3818567A (en) * 1973-03-29 1974-06-25 American Chain & Cable Co Apparatus for positioning journal assemblies in pulverizers
US3949586A (en) * 1973-10-26 1976-04-13 Klaus Neumann Rolling mill frame, in particular a universal rolling mill frame
US4005594A (en) * 1976-03-03 1977-02-01 Demag Aktiengesellschaft Roll changing mechanism for rolling mills
US4136545A (en) * 1976-06-29 1979-01-30 Hille Engineering Company Limited Rolling mill stand
DE2929423A1 (de) * 1979-07-20 1981-02-05 Schloemann Siemag Ag Einrichtung zum walzenwechsel der horizontal- und vertikalwalzensaetze bei universalwalzgeruesten
US4771626A (en) * 1986-03-14 1988-09-20 Nippon Steel Corporation Apparatus for roll-changing
US4823584A (en) * 1986-05-30 1989-04-25 Davy Mckee (Sheffield) Limited Roll change arrangement for beam mill stand
AU605153B2 (en) * 1986-05-30 1991-01-10 Davy Mckee (Sheffield) Limited Roll change arrangement for beam mill stand
US4706484A (en) * 1986-07-28 1987-11-17 United Engineering Rolling Mills, Inc. Universal rolling mill
US20170100757A1 (en) * 2014-02-11 2017-04-13 Sms Group Gmbh Tool changeover system and method
US10821490B2 (en) * 2014-02-11 2020-11-03 Sms Group Gmbh Tool changeover system and method

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Publication number Publication date
DE1916806A1 (de) 1970-03-05
GB1243561A (en) 1971-08-18
FR1600389A (de) 1970-07-20

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