US3587277A - Continuous rolling mill - Google Patents

Continuous rolling mill Download PDF

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Publication number
US3587277A
US3587277A US786186A US3587277DA US3587277A US 3587277 A US3587277 A US 3587277A US 786186 A US786186 A US 786186A US 3587277D A US3587277D A US 3587277DA US 3587277 A US3587277 A US 3587277A
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US
United States
Prior art keywords
rollers
rolling
stand
rolling mill
stands
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US786186A
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English (en)
Inventor
Umberto Pigni
Luigi Forni
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.)
Pomini Long Rolling Mills SRL
Original Assignee
Pomini Farrel SpA
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 Pomini Farrel SpA filed Critical Pomini Farrel SpA
Application granted granted Critical
Publication of US3587277A publication Critical patent/US3587277A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/18—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes from stock of limited length
    • 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
    • B21B13/005—Cantilevered roll stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/28—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by toggle-lever mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
    • 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
    • B21B2013/003—Inactive rolling stands
    • 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
    • B21B2203/22—Hinged chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills

Definitions

  • This invention relates to the continuous rolling of bars, rode and the like, and in particular relates to a continuous rolling mill which substantially eliminates torsion of the material being worked during its passage from one rolling stand to the other. It is well known that in the rolling of rods and bars in finishing rolling mills the reduction comes about by means of passage in successive rolling stands.
  • the sections of the bars being rolled usually have two axes of symmetry, one parallel to the generating lines of the rollers and oneperpendicular to these. The dimensions of the section with respect to these two axes can be either equal or different.
  • the section leaving the rollers has its major axis parallel to the generating lines of the rollers.
  • the section of the bars being rolled must arrive at successive pairs of rollers having turned through 90, so that the major axis of the said section is orthogonal to the axes of the rollers of the stand immediately succeeding.
  • a continuous rolling mill which includes a plurality of rolling stands, in which the lying axes of the rollers of any two successive stands are mutually orthogonal and in each stand the rollers are mounted cantilevered on a support common to theentire rolling mill, and in which in addition each stand includes a device for adjusting the working distance between the surfaces of the rollers, and a device for the axial translation of the rollers with respect to the rolling line, the rolling mill in addition including a device for adjusting the rotational velocity of the rollers located between successive rolling stands.
  • the principal advantage of this invention consists, as previously mentioned, in the fact that the material being rolled is no longer subject to torsion during its passage from one rolling stand to the successive one and in this manner the fitting between the rollers is greatly facilitated.
  • a further advantage which will become clear in the follow ing description consists of the system for transmission of motion to both rollers of each stand which also permits their reciprocal drawing near and drawing apart, according to the thickness of the material being rolled.
  • a still further advantage is that of the interpositioning between successive rolling stands of a differential device which allows the velocity of the downstream rollers to be varied between certain limits, if desired.
  • FIG. I is a general diagrammatic view of the continuous rolling mill according to this invention.
  • FIG. 2 is a partially sectional view of a detail of the device for locking the rollers on the shaft;
  • FIG. 3 is a partially sectional detailed view of the device for adjusting the working distance between the rollers of a stand
  • FIG. 4 is a partial view through the line IV-IV of FIG. 3;
  • FIG. 5 is a sectional view of the device for varying the velocity between two successive rolling stands and
  • FIG. 6 is a partially sectional view of the device for axially adjusting the rollers with respect to the rolling line.
  • a continuous rolling mill which includes a single base ,plate 10, on which rolling stands are assembled with their axes alternatively horizontal II and vertical ]2.
  • a motor 13 is provided coupled to a reduction gear I4, the exit shaft 15 of which rotates all the rollers 18 of the rolling stands I] and 12.
  • Disengaging couplings 16 are able to disconnect the pair of stands I] and 12 according to the requirements of the rolling operation.
  • the rolling line 17 alternatively meets rolling stands having rollers with their axes horizontal II and vertical 12.
  • rollers 18 consist, as shown in FIG. 2, of a central shaft 19 on which an envelope is mounted having its external surface grooved 21, and which, in the coupling in the working position between two rollers 18 in a rolling stand, give rise to a series of rolling channels.
  • a locking system for the anchoring of the envelope 20 on the shaft 19 a locking system is provided which includes a conical sleeve 22 forced by the key 23 between the shaft 19 and the envelope 20 by means of the screw 24.
  • envelopes it is possible to carry out the disassembly and/or the substitution of the envelope, 20, by simply extracting the screw 24 and introducing in its place a similar screw but which has no thread in the part which penetrates the body of the shaft 19.
  • this allows envelopes to be economically manufactured of steel, cast iron or sintered carbides suitable for rolling.
  • each shaft 19 carries a gear wheel, 29 and 30 respectively, engaged with a gear wheel, 31 and 32 respectively, these latter two gear wheels being mutually engaged.
  • the two frames 27 and 28 are pinned so that they rotate around the axes 33 and 34 of the gears 31 and 32 by means of two levers 35 and 36, whose free ends 37 and 38 are fixed to a spring 39, which tends to force the two rollers 18 away from each other.
  • the two supporting frames 27 and 28 are connected by a screw 40, turned by a wheel 41, the rotation of which brings about a mutual drawing near or drawing apart of the frames 27 and 28 according to the direction of threading of the screw 40 in the respective holes in the said frames.
  • a transmission system consisting of gear wheel 42 and pinion 57 is provided, its shaft being driven by means of a suitable transmission means (not shown) from the principal motor shaft 15.
  • the gear wheel 42 is engaged with the gear 31, so that the motion is transmitted through the coupling between the gear wheels 32 and 29 for the upper shaft 19 and the gear wheels 3l and 30 for the lower shaft 19 respectively, for driving the rollers 18.
  • a differential mechanism indicated overall with the number 43 including a spider frame 44, which is inserted between two successive stands, n and n +l. Inside the framework 44 two planet wheels 45 and 46 are mounted, which idle on the shafts 47 and 48 and engage with the gear wheels 49 and 50 which are keyed rigidly onto the shafts SI and 52 respectively, these shafts arranged so that they transmit motion to the said stands n and n +l.
  • a gearwheel 53 is rigidly fixed to the spider frame 24 and is engaged with a pinion 54 and is driven by means of a variable velocity motor 56 through the shaft 55.
  • rollers 18 are mounted cantilevered or in other words anchored to the rest of the machine at only one end on their respective shaft, because of which the operations of maintenance and/or repair are considerably simplified and accelerated.
  • FIG. 6 shows in detail the device for actually adjusting the rollers, fixed in this case to a stand of rollers 18 having their axes vertical.
  • the mechanism for axially adjusting the rollers is enclosed in a box 58 in which a supporting framework 59 is housed, in which the shafts 19 of the rollers 18 have their seats.
  • the framework 59 is mounted on a stanchion 60 so as to be able to slide on it under the action of a motor 61 which by way of a right angled transmission system can rotate the driving screw 69 which is coupled by means of a thread to the framework 59.
  • This latter also carries a rod 63 to which magnetic blocks 64 are fixed, which activate a magnetic head 65 which transmits an electrical impulse through the conductors 66 to the amplifier 67, which in its turn provide for the instantaneous stopping of the motor 61.
  • a continuous rolling mill including a plurality of rolling stands, each stand having a plurality of rollers rotatably mounted thereon, the axes of the rollers of any two successive stands being mutually orthogonal and, the rollers in any stand being mounted cantilevered, each stand including a device for adjusting the working distance between the surfaces of the rollers, a device for adjusting axial translation of the rollers with respect to the rolling line, and a differential device disposed between successive rolling stands for adjusting the velocity of rotation of the rollers.
  • each stand in which in each stand the rollers are supported cantilevered by a framework mounted on a base plate common to the entire rolling mill, each roller including a central shaft on which a lining of material forming a suitable external rolling surface is mounted, said external surface being furnished with grooves which work in cooperation with equal and opposite grooves of the second roller of the stand, said lining being fixed to said central shaft by means which permit the disassembly and substitution ofit.
  • said resilient means consist of a spring whose two ends are linked to said two first ends of said levers and said means of adjustment comprise a screw, turned by a hand wheel and engaged with corresponding threaded holes in said frameworks fixed to said second ends of said levers, the threads in said holes and in the corresponding parts of said screw being in the opposite direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US786186A 1968-09-30 1968-12-23 Continuous rolling mill Expired - Lifetime US3587277A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2188468 1968-09-30

Publications (1)

Publication Number Publication Date
US3587277A true US3587277A (en) 1971-06-28

Family

ID=11188201

Family Applications (1)

Application Number Title Priority Date Filing Date
US786186A Expired - Lifetime US3587277A (en) 1968-09-30 1968-12-23 Continuous rolling mill

Country Status (6)

Country Link
US (1) US3587277A (ro)
CH (1) CH487681A (ro)
ES (1) ES361993A1 (ro)
FR (1) FR2019142A1 (ro)
RO (1) RO55971A (ro)
YU (1) YU31728B (ro)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992915A (en) * 1975-04-21 1976-11-23 Birdsboro Corporation Rolling mill
US4457155A (en) * 1982-03-03 1984-07-03 White Consolidated Industries, Inc. Overhung bar rolling mill stand and two-axis gauge control system
US5123269A (en) * 1989-12-09 1992-06-23 Sms Schloemann-Siemag Aktiengesellschaft Cantilevered slit-strand rolling mill with roll changing device
US5144828A (en) * 1990-05-04 1992-09-08 Sms Schloemann-Siemag Aktiengesellschaft Combined light-section mill and wire mill
US5595083A (en) * 1994-08-01 1997-01-21 Morgan Construction Company Modular rolling mill
EP0841104A1 (de) * 1996-10-25 1998-05-13 Sms Schloemann-Siemag Aktiengesellschaft Walzgerüst mit einem Paar zweiseitig gelagerter Walzentragwellen
EP1228817A3 (en) * 2001-01-31 2004-08-25 Morgan Construction Company High speed finishing block
US7191629B1 (en) 2006-04-13 2007-03-20 Morgan Construction Company Modular rolling mill
US20080196469A1 (en) * 2007-02-15 2008-08-21 Shore T Michael Modular rolling mill
CN102357534A (zh) * 2011-08-25 2012-02-22 江苏赫夫特齿轮制造有限公司 轧机用减速机
US20140041432A1 (en) * 2011-02-07 2014-02-13 Pert S.r.l Hot-rolling machine for wire-rod and the like

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462375B (sv) * 1985-10-15 1990-06-18 Morgaardshammar Ab Centro Traadblock

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992915A (en) * 1975-04-21 1976-11-23 Birdsboro Corporation Rolling mill
US4457155A (en) * 1982-03-03 1984-07-03 White Consolidated Industries, Inc. Overhung bar rolling mill stand and two-axis gauge control system
US5123269A (en) * 1989-12-09 1992-06-23 Sms Schloemann-Siemag Aktiengesellschaft Cantilevered slit-strand rolling mill with roll changing device
US5144828A (en) * 1990-05-04 1992-09-08 Sms Schloemann-Siemag Aktiengesellschaft Combined light-section mill and wire mill
US5595083A (en) * 1994-08-01 1997-01-21 Morgan Construction Company Modular rolling mill
EP0841104A1 (de) * 1996-10-25 1998-05-13 Sms Schloemann-Siemag Aktiengesellschaft Walzgerüst mit einem Paar zweiseitig gelagerter Walzentragwellen
EP1228817A3 (en) * 2001-01-31 2004-08-25 Morgan Construction Company High speed finishing block
US7191629B1 (en) 2006-04-13 2007-03-20 Morgan Construction Company Modular rolling mill
US20080196469A1 (en) * 2007-02-15 2008-08-21 Shore T Michael Modular rolling mill
US7523632B2 (en) 2007-02-15 2009-04-28 Morgan Construction Company Modular rolling mill
US20140041432A1 (en) * 2011-02-07 2014-02-13 Pert S.r.l Hot-rolling machine for wire-rod and the like
EP2673097B1 (en) * 2011-02-07 2016-02-03 PERT S.r.l. Hot-rolling machine for wire-rod and the like
CN102357534A (zh) * 2011-08-25 2012-02-22 江苏赫夫特齿轮制造有限公司 轧机用减速机

Also Published As

Publication number Publication date
ES361993A1 (es) 1970-12-01
CH487681A (it) 1970-03-31
YU3669A (en) 1973-04-30
FR2019142A1 (ro) 1970-06-26
YU31728B (en) 1973-10-31
RO55971A (ro) 1973-11-20

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