US3523439A - Multiroll stands - Google Patents

Multiroll stands Download PDF

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Publication number
US3523439A
US3523439A US626892A US3523439DA US3523439A US 3523439 A US3523439 A US 3523439A US 626892 A US626892 A US 626892A US 3523439D A US3523439D A US 3523439DA US 3523439 A US3523439 A US 3523439A
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US
United States
Prior art keywords
rolls
roll
working
supporting
backing
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
US626892A
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English (en)
Inventor
Klaus Leifeld
Clemens Volkhausen
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.)
Schloemann AG
Original Assignee
Schloemann AG
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 Schloemann AG filed Critical Schloemann AG
Application granted granted Critical
Publication of US3523439A publication Critical patent/US3523439A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/145—Lateral support devices for rolls acting mainly in a direction parallel to the movement of the product

Definitions

  • the supporting rollers were in direct contact with the backing rolls, and because of their construction the supporting rollers formed circumferential streaks on the backing rolls which in turn imparted the streaks to the working rolls which defaced the strip being formed.
  • the instant invention provides a pair of intermediate rolls between the supporting rolls and the backing rolls.
  • This invention relates to a multiroll stand for the coldrolling or hot-rolling of strips of steel or of nonferrous metals, with two positively driven backing rolls, and with working rolls driven by peripheral friction.
  • a known roll stand for the lateral supporting of the working rolls the working rolls are displaced out of the vertical axis plane of the driven backing rolls, and are supported, in the direction of the displacement, by intermediate rolls and by supporting rollers journalled on supporting bridges, on their bodies, the supporting rollers bearing frictionally on the backing rolls.
  • a further imperfection of the known roll stand may be seen in the fact that since the supporting rollers each consist of a pluarity of individual rollers of short axial length, spaced apart, and since these rollers come into direct contact with the backing roll, which comes into direct contact with the strip that is being rolled, any imperfections in the surface of these supporting rollers are liable, by a burnishing action, to produce tracks on the backing rolls, especially if these are not very hard. Then, when cold rolling stock with a sensitive surface, these tracks may for instance yield streaks of difi'ering light reflection on the strip that is being rolled.
  • the supporting rollers in order to obviate it, must be racked away from the large backing rolls, though in this case the advantage of the simple automatic alignment of the supporting rollers with their axes parallel is lost, and greater constructional expenditure becomes necessary.
  • the known construction has the disadvantage that the stock does not admit "ice of being satisfactorily shielded against undesirable wetting by the cooling water, which is required in large quantities for the cooling of the working rolls and the intermediate rolls. Even if it should be necessary to cool the stock, the quantities of cooling medium for cooling the rolls and for cooling the stock must be capable of being regulated independently of one another, in order to enable constant roll-gap conditions to be maintained, so as to obtain stock of a constant form.
  • the aim of the invention is to provide a roll stand without the disadvantages set forth, in which, for the cold-rolling of thin hard strips, very small diameter working rolls can be employed. Economically it is further de sired that the working rolls, worn down in the known roll stand to the minimum diameter there possible, should be capable, after rehardening and regrinding, of being reinserted in the instant roll stand by simple measures for further use.
  • the cooling medium for the surface cooling of all the rolls is reliably separated from the stock, and is indepedently adjustable, as regards pressure and quantity, of any required cooling of the rolled stock.
  • a reliable screening of the supporting rollers, with their roller bearings, from the radiation of heat from the stock, must be ensured.
  • the diameter of the working rolls can be diminished to about 10 percent of the backing-roll diameter.
  • the diameter of the working rolls in the known construction already ground down to about 14 percent of the diameter of the backing rolls, with the backing-roll system according to the invention, admit of being brought into use again, there always being two rolls located between the supporting rolls and the working rolls, which obviates the transferring of streaks from the supporting rollers to the surface of the strip.
  • the supporting rollers are located so far from the rolling plane that it is easy to shield them from the heat radiated by the stock. Their packings are withdrawn from the immediate action of the cooling water.
  • the journals of the upper and lower intermediate rolls on each side are accommodated in a bearing body which is provided, on the side of the working roll, with a cylinder, the piston of which is connected with a claw, which, jointly with an oppositely located claw, supports the bearing of the working roll, there being arranged, between the working rolls and the intermediate-roll bearings, in the bearing body, in the same plane, a longitudinal guide, in which the bearing of the reversing roll, constructed as a slideblock, is displaceably accommodated.
  • the working roll can be very easily exchanged.
  • the grinding down of the roll can of itself be compensated for, within definite limits.
  • the upper bearing bodies are provided with holding means. This obviates any sinking of the upper working roll, when the stock has run out, and any sinking of the bearing bodies, with the reversing rolls and the intermediate rolls, when the working rolls are being changed.
  • the spaces bounded by the backing rolls, the working rolls, the reversing rolls and the intermediate rolls are provided with admission and discharge ducts for cooling fluid. These are preferably so arranged that the admission is effected in the middle of the spaces and the exhaust at their ends.
  • the cooling medium serving for cooling the surfaces of the rolls flows through these spaces, which are sealed from the peripheral surfaces of the rolls concerned.
  • FIG. 1 shows a vertical section on the line I-I (FIG. 2) through a cold-rolling roll stand;
  • FIG. 2 shows a horizontal section on the line II-II (FIG. 1) at the level of the rolled stock
  • FIG. 3 shows diagrammatically the arrangement of the rolls in a hot-rolling roll stand.
  • the bodies of two working rolls 1 of a multiroll stand are each vertically supported against a backing roll 2, and are horizontally supported, through the medium of reversing rolls 3 and through intermediate rolls 4 bearing on the backing rolls 2, by supporting rollers 5. They are displaced, in the direction of the supporting rollers 5, out of the common axial plane of the backing rolls 2.
  • the supporting rollers 5 are journalled in upper and lower supporting-roller combs 6, which bear, with their rear sides, against supporting bridges 9 arranged between the housings 7 and 8.
  • the supporting-roller combs 6 find an abutment on supporting beams 10, which in themselves extend parallel to the rolls, and are anchored to the chocks 11.
  • the upper and lower supporting-roller combs 6 are held in contact with the beam 10 by pressure-fluid cylinders 12 arranged between them.
  • the bearings of the intermediate rolls 4 are located in bearing bodies 13, in longitudinal guides 14 of which the bearings 15, constructed as slide-blocks, of the reversing rolls 3 are also accommodated.
  • the bearing bodies 13 are also arranged compressed-air cylinders 16, the pistons 17 of which are connected with claws 18, which serve for centering the working-roll bearings 19 in the common axial plane of the intermediate rolls 4 and the reversing rolls 3.
  • pressure-fluid cylinders 20 which support the upper bearing bodies, and prevent the intermediate rolls 4 and reversing rolls 3 sinking when the working roll 1 is being dismantled.
  • claws 21 are provided, each of which is slidable in a vertical guide 22 of a slide-piece consisting of a head 23 and a guiding member 24.
  • the slide-piece thus horizontally displaceable transversely to the rolls, is guided on the chock 11, its guiding member 24 being accommodated in a yoke-like guiding body 25 secured to the chock 11.
  • the piston 26 of a cylinder 27 provided in the guiding body 25 is directed towards the back of the head 23.
  • a cylinder 28 In the piston 26 is provided a cylinder 28, the piston 29 of which exerts, upon a transmission lever 30 fulcrumed in the head 23, a horizontal force, which is transmitted to the claw 21 as a vertical force directed against the backing roll 2, and thus holds the working roll 1 against the backing roll 2.
  • a cylinder 31 In the guiding member 24 of the slide-piece is arranged a cylinder 31, the piston rod 32 of which is secured to the chock 11. Upon working fluid being supplied, the slide-piece, with the claw 21, is drawn back, as a result of which the dismantling of the working rolls 1 is rendered possible.
  • the supporting-roller combs 6' are bolted to supporting beams 10, which, at their ends, are secured laterally to the chocks 11 by wedges 33.
  • spacing plates or shims 34 By means of spacing plates or shims 34, the most advantageous position of the supporting rollers 5', according to the working roll diameter (wear) in each case, can be brought about.
  • the spaces 35 enclosed by the peripheral surfaces of the backing rolls 2', the intermediate rolls 4', the reversing rolls 3 and the working rolls 1', are provided with inlets and outlets, not shown, for cooling fluid. In this way the surface cooling of the rolls is reliably separated from the rolled stock, and can be regulated independently of the cooling of the rolled stock.
  • a multiroll stand comprising: two positively driven backing rolls; two working rolls driven by frictional contact with the backing rolls, the axes of the working rolls being displaced out of the plane containing the axes of the backing rolls; supporting bridges extending between the housings of the roll stands; a plurality of individual supporting rollers of short axial length, in axially spaced relationship on each of two axes and journalled in the supporting bridges; two intermediate rolls respectively bearing against each of the supporting rollers and also bearing against each of the backing rolls; two reversing rolls respectively bearing against each of the working rolls and also against each of the intermediate rolls; means for keeping the intermediate rolls in frictional driving contact with the backing rolls, and also, through the medium of the reversing rolls, with the working rolls; and means for maintaining the axes of each respective contacting working roll, reversing roll and intermediate roll in a common plane.
  • a multiroll stand as claimed in claim 1 wherein the maintaining means comprises two sets of bearing bodies in which the ends of the upper and lower intermediate roll are respectively journalled; a piston-and-cylinder unit in each bearing body; bearings in which the ends of the working rolls are journalled; a claw connected with the piston of each of the piston-and-cylinder units; further claws each supporting the bearings of one of the working rolls; and longitudinal guides provided in the sides of each of the bearing bodies, and bearings for the reversing rolls, constructed as slide-blocks, slidable in the longitudinal guides.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US626892A 1966-03-30 1967-03-29 Multiroll stands Expired - Lifetime US3523439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT302166A AT260843B (de) 1966-03-30 1966-03-30 Mehrwalzengerüst

Publications (1)

Publication Number Publication Date
US3523439A true US3523439A (en) 1970-08-11

Family

ID=3544078

Family Applications (1)

Application Number Title Priority Date Filing Date
US626892A Expired - Lifetime US3523439A (en) 1966-03-30 1967-03-29 Multiroll stands

Country Status (6)

Country Link
US (1) US3523439A (de)
AT (1) AT260843B (de)
DE (1) DE1602163A1 (de)
FR (1) FR1515765A (de)
GB (1) GB1130998A (de)
SE (1) SE341792B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270377A (en) * 1978-05-19 1981-06-02 T. Sendzimir, Inc. Eighteen high rolling mill
US4552008A (en) * 1982-08-31 1985-11-12 Sulzer-Escher Wyss Ltd. Rolling mill for sheet material
US4563888A (en) * 1983-10-03 1986-01-14 Sms Schloemann-Siemag Ag Six-high roll stand with braced and removable working rolls

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2150340A (en) * 1936-10-05 1939-03-14 Rohn Wilhelm Cooling rolling mill
US2909088A (en) * 1953-01-21 1959-10-20 Schloemann Ag Mounting for backing rolls
US2927489A (en) * 1955-04-18 1960-03-08 Schloemann Ag Means for keeping working rolls in contact with backing rolls and supporting rollers in rolling mills
US3003373A (en) * 1953-01-21 1961-10-10 Schloemann Ag Multi-roll stand for rolling mills
US3049949A (en) * 1958-08-12 1962-08-21 Schloemann Ag Rolling mill
US3192757A (en) * 1961-02-20 1965-07-06 Spidem Ste Nle Lubricating and cooling devices for rolling mill rolls
US3373590A (en) * 1964-06-23 1968-03-19 Schloemann Ag Multi-roll stands for the cold-rolling of thin, hard strips

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2150340A (en) * 1936-10-05 1939-03-14 Rohn Wilhelm Cooling rolling mill
US2909088A (en) * 1953-01-21 1959-10-20 Schloemann Ag Mounting for backing rolls
US3003373A (en) * 1953-01-21 1961-10-10 Schloemann Ag Multi-roll stand for rolling mills
US2927489A (en) * 1955-04-18 1960-03-08 Schloemann Ag Means for keeping working rolls in contact with backing rolls and supporting rollers in rolling mills
US3049949A (en) * 1958-08-12 1962-08-21 Schloemann Ag Rolling mill
US3192757A (en) * 1961-02-20 1965-07-06 Spidem Ste Nle Lubricating and cooling devices for rolling mill rolls
US3373590A (en) * 1964-06-23 1968-03-19 Schloemann Ag Multi-roll stands for the cold-rolling of thin, hard strips

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270377A (en) * 1978-05-19 1981-06-02 T. Sendzimir, Inc. Eighteen high rolling mill
US4552008A (en) * 1982-08-31 1985-11-12 Sulzer-Escher Wyss Ltd. Rolling mill for sheet material
US4563888A (en) * 1983-10-03 1986-01-14 Sms Schloemann-Siemag Ag Six-high roll stand with braced and removable working rolls

Also Published As

Publication number Publication date
FR1515765A (fr) 1968-03-01
SE341792B (de) 1972-01-17
AT260843B (de) 1968-03-25
DE1602163A1 (de) 1970-04-30
GB1130998A (en) 1968-10-16

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