US3418838A - Stand changing units for continuous rolling mills - Google Patents

Stand changing units for continuous rolling mills Download PDF

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Publication number
US3418838A
US3418838A US630293A US63029367A US3418838A US 3418838 A US3418838 A US 3418838A US 630293 A US630293 A US 630293A US 63029367 A US63029367 A US 63029367A US 3418838 A US3418838 A US 3418838A
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United States
Prior art keywords
rolling
stand
stands
wheels
rail
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Expired - Lifetime
Application number
US630293A
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English (en)
Inventor
Rotert Kurt
Blos Ernst Otto
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.)
Friedrich Kocks GmbH and Co
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Friedrich Kocks GmbH and Co
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 Friedrich Kocks GmbH and Co filed Critical Friedrich Kocks GmbH and Co
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Publication of US3418838A publication Critical patent/US3418838A/en
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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
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/42—Turntables

Definitions

  • ABSTRACT OF THE DISCLOSURE A stand changing unit for continuous rolling mills in which the roll stands are mounted on Wheels having grooves adapted to run on first rails which extend to a mill drive parallel to the drive axis and which wheels are transferred to transverse rails intersecting the first rails by means of separate wheel turntables at each rail intersection,
  • This invention relates to a stand changing unit for continuous rolling mills and particularly to stand changing apparatus enabling several rolling stand frames each carrying a plurality of interchangeable rolling stands to be alternately travelled on wheels with respect to a stationary gear unit driving the stands so that the stands mounted on the frame can be coupled and uncoupled.
  • German Patent 1,054,409 describes a rolling mill equipped with fast interchangeable rolling stands, on which a plurality each of stands is ar ranged on two rolling stand frames supported by means of wheels, one rolling stand frame can be swivelled around a vertical axis beside the one end of the gear unit housing, whereas a second rolling stand frame of the same type can be swivelled around a vertical axis arranged beside the other end of the gear unit housing.
  • a disadvantage of the swivelling stand changing unit of this type rolling mill is that the stand frames cannot be removed from the rolling train, and therefore all work necessary for changing the stands arranged on the rolling stand frame has to be effected in the area of the rolling mill so that not only is the rolling stand frame swivelled out in each case, but also the necessary auxiliary equipment such as cranes, places of deposit and means for the supply and removal of rolling stands necessitate much space beside the rolling mill.
  • the objective of the present invention is to provide a rolling stand changing unit of the above described type so that any desired quantity of rolling stand frames with the rolling stands mounted on each can be alternatively put at disposal for an immediate use and the changing of the sequences of rolling stands can be made outside the range of the rolling mill, eg in an assembling shop arranged apart.
  • the interchangeable rolling stan'd frames shall be designed so that the stands mounted on same can be released or connected and can be as far as desired moved separately from the gear unit aside the rolling mill using single two-piece torque-couplings by means of a mere axial moving of the rolling stand frame.
  • each of the rail sec tions arranged on the head of a turntable is divided in its center transversely to the longitudinal direction and each rail section is supported near its outer end on a horizontal bearing bolt extending transversely to its longitudinal direction and with its inner end on a pressure ring surrounding the axle of the turntable.
  • the rail sections When the wheels run on, the rail sections lower equally forming an angle, the legs of which angle cross themselves on the turning axis of the rail turntable.
  • the wheel is supported on two transverse lines of the rail sections arranged at two equal distances on both sides of the turntable center.
  • the rail sections lap advantageously with their inner ends and the spring supporting these ends is preferably exchangeable or its initial tension is variable. Moreover, a fixed stop, adjustable in height, can be provided limiting the lowering depth of the rail sections.
  • the rail turntables are coupled through links and connected to an oil hydraulic cylinder-piston drive or an electrically driven spindle. It is also possible, however, to drive the turntables individually by means of synchronized clectromotors.
  • the moving in and out of the rolling stand frames travelling on rails arranged perpendicularly to the rolling direction is effected, e.g., by means of a hydraulic push ing device or an electrically driven spindle.
  • a hydraulic push ing device or an electrically driven spindle For discharging the wheels during operation of the rolling stands, supporting plates can be provided ahead of the gear unit, on which the rolling stand frames are transferred this way that the rails arranged ahead of the gear unit can be raised or lowered or are inclined downwards toward the gear unit. In the latter instance, the rolling stand frames slide on the transition to the working position of the stands as well as when being pushed off this position over a short distance on the supporting plates.
  • the supporting of the stand frames on stationary supporting plates ensures a special firm upright position of the rolling stand frame and consequently of the rolling stands relative to the gear unit.
  • An exact alignment of the stands to the gear unit can be easily ensured by means of stops and sliding guides.
  • the rolling stand frames are moved by means of any mobile pulling or pushing machines.
  • FIGURE 1 a schematical top view to the stand changing unit including the rolling stands connected to the rolling mill gear unit;
  • FIGURE 2 seen in rolling direction, the stand changing unit in one position, in which the rolling stands are coupled with the rolling mill gear unit;
  • FIGURE 3 the stand changing unit as per FIGURE 2 in one position, in which a rolling stand frame is pushed off the gear unit and transferred to the track extending parallelly to the rolling direction;
  • FIGURE 4 in enlarged scale a perpendicular section through a rail turntable.
  • the rolling stands G fixed on the rolling stand frame 2 are connected through a relevant plurality of couplings K with the stationary rolling mill drive 1, which can comprise a group drive, several single drives or individual motors.
  • the rolling direction is marked by an arrow.
  • Ahead of the gear unit 1 a track is laid in the direction of the gear axles and perpendicularly to the rolling direction comprising two or also more rails 4 crossing at a point spaced from the frame 2 a two-rail track extending parallelly to the rolling direction.
  • a rail turntable 3 is arranged at each crossing point of the rails of the two tracks.
  • the turntables 3 are coupled one to the other pair by levers 11 and connecting rods and connected through lever 9 and a connecting rod 8 to a cylinderpiston drive 7, by means of which the turntables 3 including the rail sections 6 on them can be turned by 90 in both directions.
  • Each of the rolling stand frames 2 is supported on the rail pairs 4, 5 through wheels, the bearings 13 of which at the rolling stand frame 2 are swivelling fixed around a perpendicular axis.
  • the wheels are provided with circumferential grooves of trapezoid cross-section, through which they are guided at the side on the correspondingly shaped rail 5 and the rail sections 6 of the turntables.
  • the rolling stand frame 2 is moved in the roll pass line and the stand G are connected through couplings K to the gear unit 1.
  • the rolling stand frame 2 is supported with the lower shoulders 2a on supporting plates 18 connected with the foundation 19, whereas the wheels 12 are lying in lowered sections 4a of the rail 4 without contacting same.
  • the rolling stand frame 2 with the rolling stands G is moved out of the roll pass line and is standing with its Wheels 12 on one each of the turntables 3.
  • the equipment for moving the rolling stand frame between the two positions marked in the FIGURES 2 and 3 comprises a hydraulic cylinder-piston drive 14 including the piston rod 15 and the coupling head 16 engaging with a lug 17 swivelling around a bolt 16a in a groove 2b at the rolling stand frame 2.
  • the rail turntable 3 represented in an enlarged scale in FIGURE 4 comprises essentially a bearing top 3b fixed in a foundation frame 23 with two bearings 21, 22, in which the pin 30 of the turntable 3 can be swivelled around a perpendicular axis.
  • the turntable head 3:: equipped with the pin 3c is provided with a recess corresponding to the Width of the rail for receiving the rail sections 6.
  • These rail sections are divided in their center part transversely to their longitudinal direction.
  • the rail sections 6a and 6b can be swivelled near their extremities around horizontal bearing bolts 20 and 20 and are lying with their lapping inner ends (FIGURE 5) on a cap 25 supported by a pressure spring 24.
  • the lowering depth of the rail sections 6a and 6b is limited by a stop 26 enclosed by a spring and adjustable in the height.
  • the rail turntables 3 can also be driven otherwise as shown, e.g., it is possible to provide the rail turntables 3 with gears which are interconnected through shafts and driven by a common motor.
  • each rail turntable by means of an electromotor and to synchronize the electromotors.
  • Stand changing unit for continuous rolling trains in which several rolling stand frames each carrying a plurality of interchangeable rolling stands can be moved on Wheels alternately relative to a stationary gear unit conveying the drive of the stands for coupling and uncoupling the stands mounted on them comprising a plurality of support wheels on each rolling stand frame, said wheels being mounted in bearings swivelling around perpendicular axes, a circumferential groove in each wheel, a first trackway extending parallel to the axis of the drive coupling receiving said wheels, at second trackway transverse to and intersecting the first trackway, a rail turntable at each intersection of the first and second trackway turning around perpendicular axes around the crossing angle, the common swivelling of said Wheels permitting the wheels to adjust from the direction of the first track into the direction of the second track.
  • Stand changing unit as per claim 1 wherein the heads of the rails have a triangular or trapezoid crosssection enlarging to the bottom and that the wheels are provided with correspondingly shaped circumferential grooves.
  • Stand changing unit according to claim 1 wherein the rail sections arranged on the turntables are divided in their center parts transversely to the longitudinal direction and the rail sections are supported tiltably near their 5 6 extremities on horizontal bolts and are elastically sup- References Cited ported With their iIl1161' ends. 4. Stand changing unit according to claim 1 wherein the rail sections are overlapping with their inner ends and 3,328,973 7/1967 Schelb 72 239 are supported through a cap on a pressure spring on the 5 FOREIGN PATENTS turntable 703,487 2/1965 Canada.
  • Stand changing unit wherein the lowering depth of the rail sectlons on the turntables RICHARD L HERBST, Primary Examiner 1s hmited by a stop enclosed by a sprlng and ad ustable in the height.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Handcart (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
US630293A 1966-04-16 1967-04-12 Stand changing units for continuous rolling mills Expired - Lifetime US3418838A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0059016 1966-04-16

Publications (1)

Publication Number Publication Date
US3418838A true US3418838A (en) 1968-12-31

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ID=7228951

Family Applications (1)

Application Number Title Priority Date Filing Date
US630293A Expired - Lifetime US3418838A (en) 1966-04-16 1967-04-12 Stand changing units for continuous rolling mills

Country Status (5)

Country Link
US (1) US3418838A (cs)
BE (1) BE696448A (cs)
DE (1) DE1527659C3 (cs)
GB (1) GB1120877A (cs)
SE (1) SE347667B (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522051A (en) * 1982-05-17 1985-06-11 Hitachi, Ltd. Continuous rolling mill
US4669291A (en) * 1984-12-19 1987-06-02 Kabushiki Kaisha Kobe Seiko Sho Spinning type multiple roller forming machine
EP0308643A3 (de) * 1987-09-25 1989-10-18 Sms Schloemann-Siemag Aktiengesellschaft Einrichtung zum Transport von Walzgerüsten oder Walzgerüstgruppen
RU2220791C2 (ru) * 2001-01-31 2004-01-10 Морган Констракшн Компани Высокоскоростной блок чистовой прокатки
US9782810B2 (en) 2014-04-01 2017-10-10 Kocks Technik Gmbh & Co. Kg Roll stand changing device
US10151066B2 (en) * 2014-10-31 2018-12-11 Kocks Technik Gmbh & Co. Kg Rack change system, change carriage, and switch for a rack change system and rolling mill with a rolling block and a rack change system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2554279C2 (de) * 1975-12-03 1984-12-20 SMS Schloemann-Siemag AG, 4000 Düsseldorf Abdeckplatte für die Stützwalzenausbaugrube eines Vierwalzengerüsts
US5595083A (en) * 1994-08-01 1997-01-21 Morgan Construction Company Modular rolling mill
US7191629B1 (en) 2006-04-13 2007-03-20 Morgan Construction Company Modular rolling mill
US7523632B2 (en) 2007-02-15 2009-04-28 Morgan Construction Company Modular rolling mill
DE102011107786A1 (de) * 2010-11-03 2012-05-03 Sms Meer Gmbh Walzwerk, Walzgerüst sowie Verfahren zum Wechsel von Walzgerüsten in einem Walzwerk

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA703487A (en) * 1965-02-09 United Engineering And Foundry Company Rolling mill
US3328973A (en) * 1964-07-06 1967-07-04 Blaw Knox Co Tube stretch reducing mill

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA703487A (en) * 1965-02-09 United Engineering And Foundry Company Rolling mill
US3328973A (en) * 1964-07-06 1967-07-04 Blaw Knox Co Tube stretch reducing mill

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522051A (en) * 1982-05-17 1985-06-11 Hitachi, Ltd. Continuous rolling mill
US4669291A (en) * 1984-12-19 1987-06-02 Kabushiki Kaisha Kobe Seiko Sho Spinning type multiple roller forming machine
EP0308643A3 (de) * 1987-09-25 1989-10-18 Sms Schloemann-Siemag Aktiengesellschaft Einrichtung zum Transport von Walzgerüsten oder Walzgerüstgruppen
RU2220791C2 (ru) * 2001-01-31 2004-01-10 Морган Констракшн Компани Высокоскоростной блок чистовой прокатки
US9782810B2 (en) 2014-04-01 2017-10-10 Kocks Technik Gmbh & Co. Kg Roll stand changing device
US10151066B2 (en) * 2014-10-31 2018-12-11 Kocks Technik Gmbh & Co. Kg Rack change system, change carriage, and switch for a rack change system and rolling mill with a rolling block and a rack change system

Also Published As

Publication number Publication date
DE1527659A1 (de) 1970-03-05
GB1120877A (en) 1968-07-24
BE696448A (cs) 1967-09-01
DE1527659B2 (de) 1973-11-15
DE1527659C3 (de) 1974-06-12
SE347667B (cs) 1972-08-14

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