EP0455082B1 - Combined line for small sections and wire - Google Patents

Combined line for small sections and wire Download PDF

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Publication number
EP0455082B1
EP0455082B1 EP91106401A EP91106401A EP0455082B1 EP 0455082 B1 EP0455082 B1 EP 0455082B1 EP 91106401 A EP91106401 A EP 91106401A EP 91106401 A EP91106401 A EP 91106401A EP 0455082 B1 EP0455082 B1 EP 0455082B1
Authority
EP
European Patent Office
Prior art keywords
roll
ring
rolling
stands
train
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
EP91106401A
Other languages
German (de)
French (fr)
Other versions
EP0455082A1 (en
Inventor
Johann Grotepass
Albert Hauck
Konrad Hamraths
Karl Keller
Hubert Müller
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag 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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0455082A1 publication Critical patent/EP0455082A1/en
Application granted granted Critical
Publication of EP0455082B1 publication Critical patent/EP0455082B1/en
Anticipated expiration legal-status Critical
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
    • 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
    • B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/12—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel in a continuous process, i.e. without reversing stands
    • 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
    • B21B13/001—Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands
    • 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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/006—Multiple strand rolling mills; Mill stands with multiple caliber rolls
    • 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
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • 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
    • B21B2203/06—Cassettes
    • 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
    • B21B31/26—Adjusting eccentrically-mounted roll bearings

Definitions

  • the invention relates to a combined, continuously working high-performance fine steel and wire mill, in the roughing mill and in the intermediate mill and / or in the finishing mill both CL stands with rolling rings supported on one side (overhung) and rolling stands with a module unit with double-sided (double) stored rolling rings are arranged.
  • the intermediate line or the finishing train of a wire and fine steel mill consisting of CL stands is not suitable for also rolling profiles, since this can generally lead to dimensional inaccuracies due to the flying bearing of the rollers. If you wanted to do this according to the current state of knowledge, separate conventional roll stands with double-sided roller bearings would have to be introduced into the rolling line. This is an expensive and complex solution since the rolling mill is primarily used for wire and round steel dimensions.
  • DE-B 2 025 640 shows a rolling mill with a plurality of roll stands, the individual roll stand being equipped with vertical and horizontal rolls which have roll rings mounted on one and two sides.
  • the rolling mill consists of six stands.
  • the first three roll stands are each equipped with a vertical and a horizontal pair of rolls, the vertical rolls of the first two roll stands being designed as guide rolls and the rolling stock resting against these rolls at least on sections of its outline, and the horizontal rolls of the first two roll stands being curved - Or V-shaped profiles are formed and are provided for the actual rolling of the rolling stock.
  • the vertical rolls of the third roll stand are for rounding off the corners of the rolling stock and the horizontal rolls of the third roll stand are for the final profiling of the rolling stock to the final dimension or the final cross section provided.
  • the arrangement of horizontal, overhung roller rings and of vertical, double-sided roller rings is used to produce electrical sector cables, the rollers of a pair of rollers having differently shaped profiles that are wider than the greatest width of the rolling stock in the direction of the roller axis. With such a rolling mill, it is not intended to roll profiles with high tapping cross sections and high forming resistances.
  • AT-B 256 006 describes a rolling mill for wire or for profiled rolling stock.
  • the core of the rolling mill is a roll stand with horizontal rolls mounted on both sides in stands, which are preceded by two stands that hold contact rolls and which is followed by an auxiliary stand.
  • the auxiliary stand has vertical rollers.
  • the auxiliary stand can serve a wide variety of purposes, for example as a pull-out driver, in order to pull the rolling stock that is running out of the rollers under tension.
  • the auxiliary stand can be used for leveling the rolled profile, for which purpose it is then arranged with rolls offset by 90 ° to the rolls of the roll stand.
  • the auxiliary scaffold should also make it possible to produce undercut profiles, for example profiles with a dovetail-shaped longitudinal groove.
  • the rolling stock is regulated electrically brought to the desired rolling temperature before it enters the roll gap. In this way, the correct filling of the caliber of the rollers is to be ensured, so that the profile is fully developed and is true to size within narrow limits without burrs.
  • the auxiliary stand in this rolling mill is equipped with overhung roller rings. As the name of the auxiliary scaffold means, this scaffold is not suitable for rolling out rolling stock with large tapping cross sections and high forming resistances.
  • a rolling mill with several rolling stands standing in the rolling line for the production of rectangular, round or angular bars etc. is known.
  • the rod material is reduced during rolling in the roll nips of the roll stands by pressure and in the gaps or spaces between two adjacent roll stands by reducing the elongation.
  • the tensile stress of the bar between the roll stands is high and is in the order of the yield strength of the steel at the bar temperature and the rate of expansion.
  • Each roll stand consists of a module version.
  • Each module which has one half of the roll stand, comprises a housing, a shaft, a main bearing and a rear bearing.
  • the forces generated between the rolls are high during the rolling of flat profiles and angle profiles. These forces can cause the cantilever shafts to deflect.
  • an external bearing is installed on certain intermediate rolling stands within the rolling mill. This bearing is preloaded by hand.
  • the arrangement of a simple external bearing is in many cases not sufficient to absorb the high rolling forces if the reduction of the rolling stock is only to take place in the rolling stands and the reduction is not to be done by reducing the elongation.
  • the object of the invention is to further develop and improve a rolling mill consisting of CL stands in such a way that rolling stock with high tapping cross sections and high forming resistances and, if appropriate, rolling stock profiles can also be rolled with tolerable costs and short-time conversion measures.
  • This task therefore also includes an improved device for storing and for the rapid and largely automated changing of the rolling rings of the stands.
  • This task is solved with the measures of claims 1 to 7 in an exemplary manner.
  • the combined high-performance fine steel and wire mill of the type mentioned is characterized by the features of claim 1. If the rolling rings have to be replaced due to caliber wear or due to the rolling of another profile, this can be done in two ways: by exchanging the module unit known per se with an already pre-equipped module unit or, according to the invention, by changing the rolling rings, it being necessary to design the second bearing of the shaft carrying the roller ring in such a way that largely automatic removal of the roller rings is made possible with little maintenance.
  • an automatically actuated, preferably hydraulically acting, quick-action clamping device for the double-bearing roller rings with at least one piston-cylinder unit effective at least on one end face of the roller ring for clamping and releasing the same in the axial direction and at least one further piston acting on the roller ring.
  • the module unit with double-bearing roller rings has a cassette bracket which contains the second bearing and is arranged on the transmission cassette which contains the first bearing and which consists of two bracket parts which can be connected by a quick-release coupling.
  • the eccentric bush of the bearings of the shaft carrying the roller rings are positively connected with the aid of another connecting element, so that a synchronized turning of the eccentric bush is ensured.
  • the new rollers and the new rolling fittings are adjusted to the new rolling line with the aid of the positively connected eccentric bushes.
  • Figure 1 is the combined and continuously working high performance fine steel and.
  • the finishing train 3, which is the intermediate line in the wire production, is followed by the finishing block 4 with the cooling device 5 (not shown in more detail), usually consisting of a water cooling section with driver / winding layer and the Stelmor system.
  • the finishing train 3 is followed by a cooling or storage bed 6.
  • some roll stands can be arranged with a module unit 8 ', 8' with double-bearing roller rings 10 for the production of profiles as required. Since all gear, drive and housing units of the CL stands in the rolling mill can also be taken over in the intermediate line or finishing train, the module unit 8 ', 8' for profile production does not have to be part of the original equipment of the rolling train, but it If necessary, the CL module unit with overhung roller rings can be replaced with a module unit 8 ', 8' with double roller rings 10.
  • FIG. 2 shows the quick-clamping device for the double-bearing roller rings 10 of a corresponding module unit in the roughing mill and in the intermediate mill or in the finishing mill.
  • the quick release device 11 is arranged on the transmission cassette 12.
  • the first bearing 13, preferably a multi-layer slide bearing of the shaft 14 of the rolling ring 10, is seated in an eccentric bushing 15, which also has an adjusting spindle (not shown) Worm thread 16 is rotatable.
  • Worm thread 16 is rotatable.
  • the caliber opening of the rolling rings is adjustable.
  • a spur gear 17, 17 'driven by a pilot gear not shown, the roller rings 10, 10' carrying shafts 14, 14 'are driven.
  • the second bearing 18 of the rolling ring 10 is also a multi-layer plain bearing, which is arranged in an eccentric bush 15 '.
  • the second bearing 18 and the eccentric bushing 15 ' are located in a cassette bracket 19 which is connected to the gearbox 12, for example by means of a screw connection.
  • the cassette bracket 19 consists of two bracket parts, which are held together by a quick-release coupling 20.
  • the eccentric bushes 15 and 15 'of the first bearing 13 and the second bearing 18 are, as is known per se, positively connected, so that a synchronized rotation of the eccentric bushes is ensured with the aid of the meshing screw in the worm thread 16.
  • the removal and assembly elements of the quick-action clamping device 11 for the rolling rings 10, including the inlet and outlet guide fittings, which are not shown in detail, are to be designated as follows, starting at the end of the shaft 14: A compression nut 21 with a union nut 22. A retaining ring 23 which is arranged between the union nut 22 and a cylinder part 24. In the cylinder part 24, two annular pistons 25, 26 are arranged, namely a clamping piston 25 for the rolling ring 10 and a release piston 26 for the conical sleeve 27 on which the rolling ring 10 is seated.
  • the cylinder part 24 is positively and non-positively connected to a support sleeve, on the support surface 29 of which one end face 30 of the rolling ring 10 rests.
  • the second multilayer plain bearing 18 is arranged on the support sleeve 28 and from the eccentric bushing 15 'surrounded.
  • the eccentric bush 15 ' is arranged in the cassette bracket 19, as I said.
  • thin friction disks 38 are inserted for torque transmission .
  • the stop ring 32, the cone bushing 27 and the support sleeve 28 are arranged in a form-fitting manner in the circumferential direction, preferably by means of a longitudinal toothing 34, 35 or the stop ring with a feather key 36 on the shaft 14 carrying the rolling ring 10.
  • an annular piston 37 which is supported against the conical sleeve 27 for the purpose of clamping the conical sleeve against the rolling ring.
  • the cassette bracket 19 is first unlocked from the transmission cassette with the aid of the coupling 20.
  • Centering units arranged on the gearbox cassette are hydraulically tensioned and the centering bolts retained for compression by means of compression springs are advanced and then the bolts are swiveled out of the centering bolts by hand (not shown in more detail).
  • clamping piston 25 for the rolling ring is hydraulically tensioned higher and the pressure nut 22 loosened and screwed back.
  • the clamping piston 25 is then relaxed.
  • the release piston 26 for the cone sleeve 27 is hydraulically tensioned, whereby the element unit consisting of the cylinder part 24, support sleeve 28, cone sleeve 27 and walrzing 10 is pulled off the shaft 14. A separate puller is therefore not necessary.
  • the entire unit can Corresponding to the resulting center of gravity 9 of a crane unit, for example, by means of a transport bracket arranged on the cassette bracket 19, it is moved from the stand to a construction site on which new roller rings 10 are mounted and new fittings are attached and completely adjusted.
  • the assembly is moved from the construction site to the rolling stand 7 with the aid of a crane or a quick-change device and is pulled onto the roller shaft 14.
  • the assembly is carried out as follows: the pressure nut 21 is rotated in the closing direction and the assembly is pushed onto the shaft 14 centering.
  • the annular clamping piston 37 for clamping the cone sleeve 27 and the annular release piston 26 for the cone sleeve 27 are hydraulically relaxed. Now the clamping piston 25 is tensioned for the rolling ring, so that the rolling ring is pressed against the stop surface 30 of the stop ring 32 via the support surface 29 of the support sleeve 28.
  • the ring piston 37 for clamping the conical sleeve 27 is hydraulically preloaded and inserted.
  • the clamping piston 25 for the rolling ring 10 is then pretensioned to maximum pressure and the union nut 22 is tightened by hand to the stop.
  • the cassette bracket 19 is locked by means of the latch pivoted into the centering bolt by hand. Now the centering unit is hydraulically relaxed, whereby the centering bolts are pushed back with the help of the compression springs and thus take over the clamping of the cassette bracket.
  • the new rollers and the new rolling fittings are adjusted to the new caliber opening with the aid of the positively connected eccentric bushes 15, 15 '.
  • FIG. 3 and Figure 4 show a further module unit 8, 8 ', 8 ⁇ with an exchangeable roller cassette 40, which is designed in a sandwich construction.
  • the roller cassette consists of two cassette plates 44 with coupling pieces 45 which end at one end and point towards one another.
  • the rolling ring shafts 41 are supported in bearings 42 in the cassette plates.
  • the shaft ends of the rolling ring shafts 41 can be inserted into the transmission cassette 47, which is no longer shown.
  • the hydraulic nut 50 can be seen, with which the rolling ring 46 is fastened on the shaft 41 in the radial direction with the aid of a conical bush 49 pushed onto the rolling ring shaft.
  • the adjusting unit 43 for adjusting the roller rings 46 to the respective caliber opening is arranged on the outer sides of the cassette plates 44.
  • the bearing units for the rolling ring shaft, in this case spherical roller bearings, are arranged in the eccentric bushing 57.
  • the eccentric bushing 57 is forcibly connected on the transmission side by means of the connecting shaft 55 to the other actuating unit 43 which is arranged on the cassette plate 44 which faces the transmission cassette 47.
  • FIG. 3 also shows that the entire roller cassette 40 can be pulled off the gear cassette 47 and can be exchanged for a new cassette, possibly for a different cassette type or a different cassette size with different center distances.
  • Figure 3 also shows that the cassette front plate 44 of the roller cassette 40 can be replaced separately if necessary, if necessary with the roller rings 46 and / or the roller fittings.
  • the screws of the coupling piece 45 are loosened or removed and the hydraulic nut 50 is relaxed and loosened. Since the roller ring 46 is seated on the taper bush 49, this is also pulled off the roller ring shaft when the cassette front plate is removed. Then the rolling ring 46 is easily accessible and can be easily removed from the taper bush 49 and exchanged for a new rolling ring.
  • the roller rings 46 are seated on a conical sleeve 49 pushed onto the roller ring shaft 41, which is acted upon in the radial direction by clamping and releasing the roller rings with the axial pressure of the hydraulic nut 50, the mode of operation of which is assumed to be known. So that the rolling rings 46 not only in in the radial direction on the rolling ring shaft 41, but also axially and in the circumferential direction, the rolling rings are held between annular clamping pieces 51, friction discs 52 being inserted as connecting elements between the clamping pieces 51 and the side flanks 53 of the rolling rings, and furthermore the clamping pieces 51 with the Taper bush 49 or on the other side are splined with the rolling ring shaft 41.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
  • Ropes Or Cables (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

The invention proposes a combined line for small sections and wire, which consists essentially of so-called cantilever (CL stands) with floating roll rings and the special feature of which consists in the fact that a number of roll stands (7) with a modular unit (8, 8', 8") comprising roll rings (10) supported on both sides (double bearing) are arranged in the roughing line (1) and in the intermediate line (2) and/or the finishing line (3). The CL modular unit of the CL stands comprising floating roll rings can, if required, be replaceable by a modular unit comprising roll rings with double bearings. For this purpose, the second bearing (18) of the modular unit is arranged in a casing frame (19) which can be coupled to the gear casing (12) of the CL stand, and the roll ring can be mounted and demounted by means of an automatically actuated, preferably hydraulically acting, rapid clamping device (11), which has piston-cylinder units (25, 26) for clamping and releasing the roll ring on the shaft (14) in the axial and radial direction. The modular unit furthermore is a roll casing (40) of sandwich-type construction with casing plates (44) which can be separated from one another. <IMAGE>

Description

Die Erfindung betrifft eine kombinierte, kontinuierlich arbeitende Hochleistungs-Feinstahl- und Drahtstraße, in deren Vorstraße sowie in deren Zwischenstraße und/oder in deren Fertigstraße sowohl CL-Gerüste mit einseitig (fliegend) gelagerten Walzringen als auch Walzgerüste mit einer Moduleinheit mit beidseitig (doppelt) gelagerten Walzringen angeordnet sind.The invention relates to a combined, continuously working high-performance fine steel and wire mill, in the roughing mill and in the intermediate mill and / or in the finishing mill both CL stands with rolling rings supported on one side (overhung) and rolling stands with a module unit with double-sided (double) stored rolling rings are arranged.

In einer an sich bekannten aus CL-Gerüsten bestehenden Walzstraße geht der von dem Walzgut ausgeübte Walzdruck grundsätzlich in die ersten Lager der fliegend gelagerten Walzen. Das führt dazu, daß die Walzringe, die Lager und die Gehäuse beim Walzen mit hohen Anstichquerschnitten und hohen Umformwiderständen entsprechend groß dimensioniert werden müssen. Bei einer solchen großen Dimensionierung der Gerüsteinzelteile besteht die Gefahr, daß die Kompaktbauweise der CL-Gerüste weitgehend verloren gehen kann.In a rolling mill known per se from CL stands, the rolling pressure exerted by the rolling stock basically goes into the first bearings of the overhung rollers. This means that the rolling rings, the bearings and the housing have to be dimensioned appropriately large when rolling with high tapping cross sections and high forming resistances. With such large dimensions of the scaffolding components, there is a risk that the compact design of the CL scaffolding can be largely lost.

Große Anstichquerschnitte und hohe Walzkräfte führen bei den typischen CL-Gerüsten also zu technologischen und konstruktiven Grenzen. Ein technischer Ausweg wäre der Einsatz herkömmlicher ständerloser Gerüste mit in Einbaustücken beidseitig gelagerten Walzen, bspw. Gerüste mit Gerüstständern sowie in den Ständerfenstern in Einbaustücken beidseitig gelagerten Walzen mit einem oder mehreren Kalibern. Diese Gerüste sind teuer, haben einen erheblichen Platzbedarf und sind bezüglich der Umrüstung der Walzen auf andere Kaliber wartungsintensiv.Large piercing cross sections and high rolling forces therefore lead to technological and constructive limits with the typical CL stands. A technical way out would be to use conventional stand-less scaffolding with rollers mounted on both sides in chocks, e.g. scaffolding with scaffolding stands and rollers with one or more calibres mounted on both sides in mounting pieces in chocks. These stands are expensive, take up a lot of space and are maintenance-intensive when converting the rolls to other calibers.

In der Regel ist die Zwischenstraße bzw. die Fertigstraße einer aus CL-Gerüsten bestehenden Draht- und Feinstahlstraße nicht dafür geeignet, auch Profile zu walzen, da dies wegen der fliegenden Lagerung der Walzen im allgemeinen zu Maßungenauigkeiten führen kann. Wollte man dies nach dem bisherigen Kenntnisstand dennoch tun, müßten separate herkömmliche Walzgerüste mit einer beidseitigen Walzenlagerung in die Walzlinie eingebracht werden. Dies ist eine teure und aufwendige Lösung, da die Walzstraße vorrangig bestimmungsgemäß für Draht- und Rundstahlabmessungen gefahren wird.As a rule, the intermediate line or the finishing train of a wire and fine steel mill consisting of CL stands is not suitable for also rolling profiles, since this can generally lead to dimensional inaccuracies due to the flying bearing of the rollers. If you wanted to do this according to the current state of knowledge, separate conventional roll stands with double-sided roller bearings would have to be introduced into the rolling line. This is an expensive and complex solution since the rolling mill is primarily used for wire and round steel dimensions.

Der DE-B 2 025 640 ist eine Walzstraße mit mehreren Walzgerüsten zu entnehmen, wobei das einzelne Walzgerüst mit Vertikal- und Horizontalwalzen ausgerüstet ist, die einseitig und zweiseitig gelagerte Walzringe aufweisen. Die Walzstraße besteht aus sechs Gerüsten. Die ersten drei Walzgerüste sind mit je einem vertikalen und einem horizontalen Walzenpaar ausgerüstet, wobei die vertikalen Walzen der ersten beiden Walzgerüste als Führungswalzen ausgebildet sind und das Walzgut zumindest an Abschnitten seines Umrisses an diesen Walzen anliegt und wobei die horizontalen Walzen der ersten beiden Walzgerüste mit bogen- bzw. V-förmigen Profilen ausgebildet sind und zum eigentlichen Walzen des Walzgutes vorgesehen sind. Die vertikalen Walzen des dritten Walzgerüstes sind für die Abrundung der Ecken des Walzgutes und die horizontalen Walzen des dritten Walzgerüstes für die Endprofilierung des Walzgutes auf das Endmaß bzw. den Endquerschnitt vorgesehen. Die Anordnung von horizontalen, fliegend gelagerten Walzringen und von vertikalen, beidseitig gelagerten Walzringen dient der Herstellung von elektrischen Sektorkabeln, wobei die Walzen eines Walzenpaares verschiedenartig ausgebildete Profile aufweisen, die in Richtung der Walzenachse breiter als die größte Breite des Walzgutes ausgebildet sind. Mit einer solchen Walzstraße ist nicht beabsichtigt, Profile mit hohen Anstichquerschnitten und hohen Umformwiderständen zu walzen.DE-B 2 025 640 shows a rolling mill with a plurality of roll stands, the individual roll stand being equipped with vertical and horizontal rolls which have roll rings mounted on one and two sides. The rolling mill consists of six stands. The first three roll stands are each equipped with a vertical and a horizontal pair of rolls, the vertical rolls of the first two roll stands being designed as guide rolls and the rolling stock resting against these rolls at least on sections of its outline, and the horizontal rolls of the first two roll stands being curved - Or V-shaped profiles are formed and are provided for the actual rolling of the rolling stock. The vertical rolls of the third roll stand are for rounding off the corners of the rolling stock and the horizontal rolls of the third roll stand are for the final profiling of the rolling stock to the final dimension or the final cross section provided. The arrangement of horizontal, overhung roller rings and of vertical, double-sided roller rings is used to produce electrical sector cables, the rollers of a pair of rollers having differently shaped profiles that are wider than the greatest width of the rolling stock in the direction of the roller axis. With such a rolling mill, it is not intended to roll profiles with high tapping cross sections and high forming resistances.

Die AT-B 256 006 beschreibt eine Walzstraße für Draht oder für profiliertes Walzgut. Kernstück der Walzstraße ist ein Walzgerüst mit beidseitig in Ständern gelagerten horizontalen Walzen, dem zwei Kontaktrollensätze aufnehmende Gerüste vorgeordnet sind und dem ein Hilfsgerüst nachgeordnet ist. Das Hilfsgerüst weist Vertikalwalzen auf. Das Hilfsgerüst kann verschiedensten Zwecken dienen, so bspw. als Ausziehtreiber, um das auslaufende Walzgut unter Zug von den Walzen abzuziehen. Ferner kann das Hilfsgerüst zum Egalisieren des gewalzten Profils verwendet werden, wozu es dann mit um 90° zu den Walzen des Walzgerüstes versetzten Walzen angeordnet ist. Durch das Hilfsgerüst soll auch die Herstellung unterschnittener Profile, bspw. von Profilen mit einer schwalbenschwanzförmigen Längsnut möglich sein. In dieser Walzstraße wird das Walzgut vor dem Einlaufen in den Walzspalt regulierbar elektrisch auf die gewünschte Walztemperatur gebracht. Auf diese Weise soll die richtige Füllung der Kaliber der Walzen gewährleistet werden, so daß sich das Profil voll ausprägt und dabei in engen Grenzen maßhaltig ist, ohne daß Grate entstehen. In dieser Walzstraße ist allenfalls das Hilfsgerüst mit fliegend gelagerten Walzringen ausgerüstet. Wie der Name Hilfsgerüst besagt, ist dieses Gerüst nicht geeignet, Walzgut mit hohen Anstichsquerschnitten und hohen Umformwiderständen auszuwalzen.AT-B 256 006 describes a rolling mill for wire or for profiled rolling stock. The core of the rolling mill is a roll stand with horizontal rolls mounted on both sides in stands, which are preceded by two stands that hold contact rolls and which is followed by an auxiliary stand. The auxiliary stand has vertical rollers. The auxiliary stand can serve a wide variety of purposes, for example as a pull-out driver, in order to pull the rolling stock that is running out of the rollers under tension. Furthermore, the auxiliary stand can be used for leveling the rolled profile, for which purpose it is then arranged with rolls offset by 90 ° to the rolls of the roll stand. The auxiliary scaffold should also make it possible to produce undercut profiles, for example profiles with a dovetail-shaped longitudinal groove. In this rolling mill, the rolling stock is regulated electrically brought to the desired rolling temperature before it enters the roll gap. In this way, the correct filling of the caliber of the rollers is to be ensured, so that the profile is fully developed and is true to size within narrow limits without burrs. At most, the auxiliary stand in this rolling mill is equipped with overhung roller rings. As the name of the auxiliary scaffold means, this scaffold is not suitable for rolling out rolling stock with large tapping cross sections and high forming resistances.

Aus der DE-A 2 326 723 ist ein Walzwerk mit mehreren in Walzlinie stehenden Walzgerüsten zur Herstellung von rechteckigen, runden oder winkelförmigen Stangen etc. bekannt. Die Reduktion des Stangenmaterials während des Walzens erfolgt in den Walzspalten der Walzgerüste durch Druck und in den Abständen oder Zwischenräumen zwischen zwei benachbarten Walzgerüsten durch Dehnungsreduktion. Die Zugspannung der Stange zwischen den Walzgerüsten ist hoch und liegt in der Größenordnung der Fließ- bzw. Streckgrenze des Stahls bei der Stangentemperatur und der Dehnungsgeschwindigkeit. Jedes Walzgerüst besteht aus einer Modulausführung. Jeder Modul, der eine Hälfte des Walzgerüstes aufweist, umfaßt ein Gehäuse, eine Welle, ein Hauptlager und ein Hinterlager. Während des Walzens von Flachprofilen und Winkelprofilen sind die zwischen den Walzen erzeugten Kräfte groß. Diese Kräfte können zu einer Ausbiegung der frei tragenden Wellen führen. Um das Ausbiegen der Wellen zu verhindern, ist bei gewissen Zwischenwalzgerüsten innerhalb der Walzstraße ein Außenlager angebracht. Dieses Lager wird von Hand vorgespannt. Die Anordnung eines einfachen Außenlagers reicht in vielen Fällen nicht aus, die hohen Walzkräfte aufzunehmen, wenn die Reduktion des Walzgutes ausschließlich in den Walzgerüsten und die Reduktion nicht durch eine Dehnungsreduktion erfolgen soll.From DE-A 2 326 723 a rolling mill with several rolling stands standing in the rolling line for the production of rectangular, round or angular bars etc. is known. The rod material is reduced during rolling in the roll nips of the roll stands by pressure and in the gaps or spaces between two adjacent roll stands by reducing the elongation. The tensile stress of the bar between the roll stands is high and is in the order of the yield strength of the steel at the bar temperature and the rate of expansion. Each roll stand consists of a module version. Each module, which has one half of the roll stand, comprises a housing, a shaft, a main bearing and a rear bearing. The forces generated between the rolls are high during the rolling of flat profiles and angle profiles. These forces can cause the cantilever shafts to deflect. In order to prevent the shafts from bending, an external bearing is installed on certain intermediate rolling stands within the rolling mill. This bearing is preloaded by hand. The arrangement of a simple external bearing is in many cases not sufficient to absorb the high rolling forces if the reduction of the rolling stock is only to take place in the rolling stands and the reduction is not to be done by reducing the elongation.

Aufgabe der Erfindung ist es, eine aus CL-Gerüsten bestehende Walzstraße dahingehend weiterzubilden und sie zu verbessern, daß mit dieser Walzstraße Walzgut mit hohen Anstichquerschnitten und hohen Umformwiderständen sowie gegebenenfalls auch Walzgutprofile mit erträglichen Kosten und kurzzeitigen Umbaumaßnahmen gewalzt werden können. Zu dieser Aufgabe gehört folglich auch eine verbesserte Vorrichtung zur Lagerung und zum schnellen und weitgehend automatisierten Wechsel der Walzringe der Gerüste. Diese Aufgabe wird mit den Maßnahmen der Patentansprüche 1 bis 7 in vorbildlicherweise gelöst.The object of the invention is to further develop and improve a rolling mill consisting of CL stands in such a way that rolling stock with high tapping cross sections and high forming resistances and, if appropriate, rolling stock profiles can also be rolled with tolerable costs and short-time conversion measures. This task therefore also includes an improved device for storing and for the rapid and largely automated changing of the rolling rings of the stands. This task is solved with the measures of claims 1 to 7 in an exemplary manner.

Die kombinierte Hochleistungs-Feinstahl- und Drahtstraße der eingangs genannten Gattung zeichnet sich durch die Merkmale des Anspruchs 1 aus. Wenn wegen Kaliberverschleiß oder wegen der Walzung eines anderen Profils die Walzringe gewechselt werden müssen, so kann dies auf zweierlei Weise geschehen: Durch an sich bekanntes Auswechseln der Moduleinheit mit einer bereits vorgerüsteten Moduleinheit oder nach der Erfindung durch Wechseln der Walzringe, wobei es erforderlich ist, die zweite Lagerung der den Walzring tragenden Welle so auszubilden, daß mit einem geringen Wartungsaufwand ein weitgehend automatisches Abziehen der Walzringe ermöglicht wird. Hierzu wird eine automatisch betätigbare, vorzugsweise hydraulisch wirkende Schnellspannvorrichtung für die doppelt gelagerten Walzringe vorgeschlagen, mit wenigstens einer zumindest auf eine Stirnfläche des Walzringes wirksamen Kolben-Zylinder-Einheit zum Klemmen und Lösen desselben in axialer Richtung und wenigstens einer weiteren auf den Walzring wirksamen Kolben-Zylinder-Einheit zum Klemmen und Lösen in radialer Richtung einer den Walzring tragenden und auf dessen Wellenachse verschiebbar angeordneten Konusbüchse. Zweckmäßig ist dabei, daß die Moduleinheit mit doppelt gelagerten Walzringen eine das zweite Lager enthaltenden und an der das erste Lager enthaltenden Getriebekassette angeordneten Kassettenbügel aufweist, der aus zwei von einer schnell lösbaren Kupplung verbindbaren Bügelteilen besteht. Die Exzenterbüchse der Lager der die Walzringe tragenden Welle sind mit Hilfe eines anderen Verbindungselementes zwangsverbunden, so daß ein synchronisiertes Verdrehen der Exzenterbüchse gewährleistet ist. Die neuen Walzen und die neuen Walzarmaturen werden mit Hilfe der zwangsverbundenen Exzenterbüchsen auf die neue Walzlinie einjustiert.The combined high-performance fine steel and wire mill of the type mentioned is characterized by the features of claim 1. If the rolling rings have to be replaced due to caliber wear or due to the rolling of another profile, this can be done in two ways: by exchanging the module unit known per se with an already pre-equipped module unit or, according to the invention, by changing the rolling rings, it being necessary to design the second bearing of the shaft carrying the roller ring in such a way that largely automatic removal of the roller rings is made possible with little maintenance. For this purpose, an automatically actuated, preferably hydraulically acting, quick-action clamping device for the double-bearing roller rings is proposed, with at least one piston-cylinder unit effective at least on one end face of the roller ring for clamping and releasing the same in the axial direction and at least one further piston acting on the roller ring. Cylinder unit for clamping and releasing in the radial direction of a cone bushing that supports the rolling ring and is arranged to be displaceable on its shaft axis. It is expedient that the module unit with double-bearing roller rings has a cassette bracket which contains the second bearing and is arranged on the transmission cassette which contains the first bearing and which consists of two bracket parts which can be connected by a quick-release coupling. The eccentric bush of the bearings of the shaft carrying the roller rings are positively connected with the aid of another connecting element, so that a synchronized turning of the eccentric bush is ensured. The new rollers and the new rolling fittings are adjusted to the new rolling line with the aid of the positively connected eccentric bushes.

Der Vorteil der konstruktiven Gestaltung der erfindungsgemäßen Schnellspannvorrichtung für die doppelt gelagerten Walzringe der Moduleinheit wird nachfolgend beschrieben. Sollte der fliegend gelagerte Walzring der CL-Gerüste entweder in der Vorstraße oder in den Fertiggerüsten der Zwischenstraße oder Fertigstraße gegen einen doppelt gelagerten Walzring auszutauschen sein, so wird die gesamte Modulkassette gewechselt. Der Kassettenwechsel und der Wechsel der Walzringe kann mit der vorgeschlagenen Konstruktion in kürzester Zeit und weitgehend automatisch vorgenommen werden. Die Walzstraße kann demnach je nach Verwendung am kostengünstigsten komplett mit CL-Gerüsten oder in der Vorstraße mit einigen Gerüsten mit Moduleinheiten mit doppelter Walzringlagerung und in der Zwischenstraße und Fertigstraße entweder während der Erstausstattung oder aber auch später mit Moduleinheiten mit doppelter Walzringlagerung für die Profilwalzung bzw. Trennwalzung ausgerüstet werden.The advantage of the structural design of the quick release device according to the invention for the double-bearing roller rings of the module unit is described below. Should the overhung rolling ring of the CL stands either counter in the roughing mill or in the finishing stands of the intermediate or finishing mill If a double-bearing roller ring has to be replaced, the entire module cassette is changed. With the proposed construction, the cassette change and the change of the roller rings can be carried out in a very short time and largely automatically. Depending on the application, the rolling mill can be most cost-effective completely with CL stands or in the roughing stand with some stands with module units with double rolling ring storage and in the intermediate line and finishing train either during initial equipment or later with modular units with double rolling ring storage for profile rolling or Separating rolling.

Die Erfindung wird anhand von teilweise schematischen Zeichnungen für eine kombinierte Feinstahl- und Drahtstraße beschrieben. Es zeigen

Figur 1
das Layout der Walzstraße
Figur 2
die Schnellspannvorrichtung für die doppelt gelagerten Walzringe einer Modul-Einheit
Figur 3
die Moduleinheit als Walzenkassette in Sandwich-Bauweise
Figur 4
einen Teilausschnitt der Walzenkassette nach Figur 3, teilweise im Schnitt.
The invention is described with the aid of partially schematic drawings for a combined fine steel and wire mill. Show it
Figure 1
the layout of the rolling mill
Figure 2
the quick release device for the double-bearing roller rings of a module unit
Figure 3
the module unit as a roller cassette in sandwich construction
Figure 4
a partial section of the roller cassette according to Figure 3, partly in section.

In Figur 1 ist die kombinierte und kontinuierlich arbeitende Hochleistungs-Feinstahl- und. Drahtstraße dargestellt, mit der Vorstraße 1, die aus nebeneinander in der Walzlinie angeordneten Walzgerüsten mit der Gerüstfolge horizontal (H) / vertikal (V) besteht, gefolgt von der Zwischenstraße 2, die ebenfalls aus nebeneinander angeordneten Walzgerüsten mit der Gerüstfolge horizontal (H) / vertikal (V) besteht, welcher eine Fertigstraße 3 nachgeordnet ist. Der Fertigstraße 3, welche bei der Drahtherstellung die Zwischenstraße ist, folgt der Fertigblock 4 mit der nicht näher dargestellten Kühleinrichtung 5, zumeist bestehend aus einer Wasserkühlstrecke mit Treiber/Windungsleger und der Stelmor-Anlage. Im Falle der Walzstabherstellung bzw. Profilherstellung folgt der Fertigstraße 3 ein Kühl- bzw. Ablegebett 6. Die komplette Walzstraße besteht im wesentlichen aus sogenannten Cantilever-Gerüsten, kurz benannt CL-Gerüste, das heißt Gerüste mit einseitig (fliegend gelagerten Walzringen). Die Besonderheit der Walzstraße besteht nunmehr darin, daß vornehmlich die ersten CL-Gerüste in der Vorstraße auswechselbare Kassetteneinheiten enthalten, die gegen solche mit zweiseitig gelagerten Walzringen auswechwelbar sind. Sämtliche Getriebe-, Antriebs- und Gehäuseeinheiten (nicht näher dargestellt) der in der Walzstraße befindlichen CL-Gerüste können für die Kassette mit doppelt gelagerten Walzringen übernommen werden. Mit derart gelagerten Walzringen wird gerade in den ersten Gerüsten der Vorstraße die Möglichkeit eröffnet, ein Walzgut mit hohen Anstichquerschnitten und hohen Umformwiderständen mit einwandfreier Qualität auszuwalzen. In der Zwischenstraße 2 bzw. in der Fertigstraße 3 können nach Bedarf einige Walzgerüste mit einer Modul-Einheit 8′, 8˝ mit doppelt gelagerten Walzringen 10 für die Profilherstellung angeordnet sein. Da auch in der Zwischenstraße bzw. Fertigstraße sämtliche Getriebe-, Antriebs- und Gehäuseeinheiten der in der Walzstraße befindlichen CL-Gerüste übernommen werden können, muß die Modul-Einheit 8′, 8˝ für die Profilherstellung nicht zur Erstausrüstung der Walzstraße gehören, sondern es kann im Bedarfsfall die CL-Modul-Einheit mit fliegend gelagerten Walzringen gegen eine Modul-Einheit 8′, 8˝ mit doppelt gelagerten Walzringen 10 ausgewechselt werden.In Figure 1 is the combined and continuously working high performance fine steel and. Wire mill shown, with roughing train 1, which consists of roll stands arranged side by side in the rolling line with the stand sequence horizontal (H) / vertical (V), followed by intermediate line 2, which also consists of roll stands arranged side by side with the stand sequence horizontal (H) / vertical (V), which is followed by a finishing train 3. The finishing train 3, which is the intermediate line in the wire production, is followed by the finishing block 4 with the cooling device 5 (not shown in more detail), usually consisting of a water cooling section with driver / winding layer and the Stelmor system. In the case of rolling rod production or profile production, the finishing train 3 is followed by a cooling or storage bed 6. The entire rolling train essentially exists from so-called cantilever stands, abbreviated to CL stands, that means stands with one-sided (overhung roller rings). The peculiarity of the rolling mill now consists in the fact that primarily the first CL stands in the roughing mill contain interchangeable cassette units which can be exchanged for those with double-sided rolling rings. All gear, drive and housing units (not shown in detail) of the CL stands in the rolling mill can be taken over for the cassette with double-bearing roller rings. With rolling rings mounted in this way, the possibility is opened in the first stands of the roughing mill to roll out a rolling stock with high tapping cross sections and high forming resistances with impeccable quality. In the intermediate line 2 or in the finishing train 3, some roll stands can be arranged with a module unit 8 ', 8' with double-bearing roller rings 10 for the production of profiles as required. Since all gear, drive and housing units of the CL stands in the rolling mill can also be taken over in the intermediate line or finishing train, the module unit 8 ', 8' for profile production does not have to be part of the original equipment of the rolling train, but it If necessary, the CL module unit with overhung roller rings can be replaced with a module unit 8 ', 8' with double roller rings 10.

Figur 2 zeigt die Schnellspannvorrichtung für die doppelt gelagerten Walzringe 10 einer entsprechenden Modul-Einheit in der Vorstraße sowie in der Zwischenstraße bzw. in der Fertigstraße. Die Schnellspannvorrichtung 11 ist an der Getriebekassette 12 angeordnet. Das erste Lager 13, vorzugsweise ein Mehrschicht-Gleitlager der Welle 14 des Walzringes 10 sitzt in einer Exzenterbüchse 15, die über eine nicht gezeigte Anstellspindel mit Schneckengewinde 16 verdrehbar ist. Hierdurch ist die Kaliberöffnung der Walzringe einstellbar. Mit Hilfe der von einem nicht näher dargestellten Vorgetriebe angetriebenen Stirnräder 17, 17′ werden die die Walzringe 10, 10′ tragenden Wellen 14, 14′ angetrieben. Das zweite Lager 18 des Walzringes 10 ist ebenfalls ein Mehrschicht-Gleitlager, welches in einer Exzenterbüchse 15′ angeordnet ist. Das zweite Lager 18 und die Exzenterbüchse 15′ befinden sich in einem Kassetttenbügel 19, der mit der Getriebekassette 12 bspw. mittels einer Verschraubung in Verbindung steht. Der Kassettenbügel 19 besteht aus zwei Bügelteilen, die von einer schnell lösbaren Kupplung 20 zusammengehalten werden. Die Exzenterbüchsen 15 und 15′ des ersten Lagers 13 und des zweiten Lagers 18 sind, wie an sich bekannt, zwangsverbunden, so daß ein synchronisiertes Verdrehen der Exzenterbüchsen mit Hilfe der in dem Schneckengewinde 16 kämmenden Anstellspindel gewährleistet ist.FIG. 2 shows the quick-clamping device for the double-bearing roller rings 10 of a corresponding module unit in the roughing mill and in the intermediate mill or in the finishing mill. The quick release device 11 is arranged on the transmission cassette 12. The first bearing 13, preferably a multi-layer slide bearing of the shaft 14 of the rolling ring 10, is seated in an eccentric bushing 15, which also has an adjusting spindle (not shown) Worm thread 16 is rotatable. As a result, the caliber opening of the rolling rings is adjustable. With the help of a spur gear 17, 17 'driven by a pilot gear, not shown, the roller rings 10, 10' carrying shafts 14, 14 'are driven. The second bearing 18 of the rolling ring 10 is also a multi-layer plain bearing, which is arranged in an eccentric bush 15 '. The second bearing 18 and the eccentric bushing 15 'are located in a cassette bracket 19 which is connected to the gearbox 12, for example by means of a screw connection. The cassette bracket 19 consists of two bracket parts, which are held together by a quick-release coupling 20. The eccentric bushes 15 and 15 'of the first bearing 13 and the second bearing 18 are, as is known per se, positively connected, so that a synchronized rotation of the eccentric bushes is ensured with the aid of the meshing screw in the worm thread 16.

Die Abzieh- und Montageelemente der Schnellspannvorrichtung 11 für die Walzringe 10 einschließlich der nicht näher dargestellten Einlauf-und Auslaufführungsarmaturen sind - am Ende der Welle 14 beginnend - folgendermaßen zu bezeichnen:
Eine Druckmutter 21 mit einer Überwurfmutter 22. Ein Haltering 23, der zwischen der Überwurfmutter 22 und einem Zylinderteil 24 angeordnet ist. In dem Zylinderteil 24 sind zwei ringförmige Kolben 25, 26 angeordnet, nämlich ein Klemmkolben 25 für den Walzring 10 und ein Lösekolben 26 für die Konusbüchse 27, auf der der Walzring 10 aufsitzt. Der Zylinderteil 24 ist form-und kraftschlüssig mit einer Stützhülse verbunden, an deren Stützfläche 29 die eine Stirnseite 30 des Walzringes 10 anliegt. Auf der Stützhülse 28 ist das zweite Mehrschicht-Gleitlager 18 angeordnet und von der Exzenterbüchse 15′ umgeben. Die Exzenterbüchse 15′ ist wie gesagt im Kassettenbügel 19 angeordnet. Zwischen dem ersten Gleitlager 13 und der Exzenterbüchse 15 und der anderen Stirnseite 31 des Walzringes 10 befindet sich ein Anschlagring 32 mit einer Anschlagfläche 33. Zwischen den Stützflächen von Stützhülse 28 und Walzring 10 sowie zwischen den Stützflächen von Anschlagring 32 sind dünne Reibscheiben 38 zur Drehmomentübertragung eingeschoben. Der Anschlagring 32, die Konusbüchse 27 und die Stützhülse 28 sind in Umfangsrichtung formschlüssig, vorzugsweise mittels einer Längsverzahnung 34, 35 bzw. der Anschlagring mit einer Paßfeder 36 auf der den Walzring 10 tragenden Welle 14 angeordnet. In der Stützhülse 28 befindet sich ein Ringkolben 37, der sich gegen die Konusbüchse 27 zwecks Klemmens der Konusbüchse gegen den Walzring abstützt.The removal and assembly elements of the quick-action clamping device 11 for the rolling rings 10, including the inlet and outlet guide fittings, which are not shown in detail, are to be designated as follows, starting at the end of the shaft 14:
A compression nut 21 with a union nut 22. A retaining ring 23 which is arranged between the union nut 22 and a cylinder part 24. In the cylinder part 24, two annular pistons 25, 26 are arranged, namely a clamping piston 25 for the rolling ring 10 and a release piston 26 for the conical sleeve 27 on which the rolling ring 10 is seated. The cylinder part 24 is positively and non-positively connected to a support sleeve, on the support surface 29 of which one end face 30 of the rolling ring 10 rests. The second multilayer plain bearing 18 is arranged on the support sleeve 28 and from the eccentric bushing 15 'surrounded. The eccentric bush 15 'is arranged in the cassette bracket 19, as I said. There is a stop ring 32 with a stop surface 33 between the first slide bearing 13 and the eccentric bush 15 and the other end face 31 of the rolling ring 10. Between the supporting surfaces of the support sleeve 28 and the rolling ring 10 and between the supporting surfaces of the stop ring 32, thin friction disks 38 are inserted for torque transmission . The stop ring 32, the cone bushing 27 and the support sleeve 28 are arranged in a form-fitting manner in the circumferential direction, preferably by means of a longitudinal toothing 34, 35 or the stop ring with a feather key 36 on the shaft 14 carrying the rolling ring 10. In the support sleeve 28 there is an annular piston 37 which is supported against the conical sleeve 27 for the purpose of clamping the conical sleeve against the rolling ring.

Zur Demontage des Walzringes 10 wird zunächst der Kassettenbügel 19 mit Hilfe der Kupplung 20 von der Getriebekassette entriegelt. An der Getriebekassette angeordnete Zentriereinheiten werden hydraulisch gespannt und die über Druckfedern zur Klemmung zurückgehaltenen Zentrierbolzen werden vorgeschoben und anschließend werden von Hand die Riegel aus den Zentrierbolzen geschwenkt (nicht näher dargestellt).To dismantle the rolling ring 10, the cassette bracket 19 is first unlocked from the transmission cassette with the aid of the coupling 20. Centering units arranged on the gearbox cassette are hydraulically tensioned and the centering bolts retained for compression by means of compression springs are advanced and then the bolts are swiveled out of the centering bolts by hand (not shown in more detail).

Jetzt wird der Klemmkolben 25 für den Walzring hydraulisch höher gespannt und die Druckmutter 22 gelöst und zurückgeschraubt. Der Klemmkolben 25 wird anschließend entspannt. Der Lösekolben 26 für die Konusbüchse 27 wird hydraulisch gespannt, wodurch die Elementeinheit bestehend aus Zylinderteil 24, Stützhülse 28, Konusbüchse 27 und Walrzing 10 von der Welle 14 abgezogen wird. Eine separate Abziehvorrichtung entfällt also. Da an dem Kassettenbügel 19 auch die nicht näher dargestellten Walzarmaturen befestigt sind, kann die Gesamteinheit ensprechend dem sich ergebenden Schwerpunkt 9 von einer Kraneinheit bspw. mittels einer an dem Kassettenbügel 19 angeordneten Transportlasche von dem Gerüst zu einem Bauplatz bewegt werden, an dem neue Walzringe 10 aufgezogen und neue Armaturen befestigt und fertig justiert werden.Now the clamping piston 25 for the rolling ring is hydraulically tensioned higher and the pressure nut 22 loosened and screwed back. The clamping piston 25 is then relaxed. The release piston 26 for the cone sleeve 27 is hydraulically tensioned, whereby the element unit consisting of the cylinder part 24, support sleeve 28, cone sleeve 27 and walrzing 10 is pulled off the shaft 14. A separate puller is therefore not necessary. Since the rolling fittings, not shown, are also attached to the cassette bracket 19, the entire unit can Corresponding to the resulting center of gravity 9 of a crane unit, for example, by means of a transport bracket arranged on the cassette bracket 19, it is moved from the stand to a construction site on which new roller rings 10 are mounted and new fittings are attached and completely adjusted.

Zur Montage der neuen Walzringe mit den neu justierten Armaturen wird die Baueinheit mit Hilfe des Krans bzw. einer Schnellwechselvorrichtung von dem Bauplatz zu dem Walzgerüst 7 gefahren und auf die Walzenwelle 14 aufgezogen. Die Montage wird dabei folgendermaßen vorgenommen: Die Druckmutter 21 wird in Schließrichtung gedreht und die Baueinheit auf die Welle 14 zentrierend aufgeschoben. Der ringförmige Klemmkolben 37 zur Klemmung der Konusbüchse 27 und der ringförmige Lösekolben 26 für die Konusbüchse 27 werden hydraulisch entspannt. Jetzt wird der Klemmkolben 25 für den Walzring gespannt, so daß der Walzring über die Stützfläche 29 der Stützhülse 28 an die Anschlagfläche 30 des Anschlagringes 32 angepreßt wird.To assemble the new rolling rings with the newly adjusted fittings, the assembly is moved from the construction site to the rolling stand 7 with the aid of a crane or a quick-change device and is pulled onto the roller shaft 14. The assembly is carried out as follows: the pressure nut 21 is rotated in the closing direction and the assembly is pushed onto the shaft 14 centering. The annular clamping piston 37 for clamping the cone sleeve 27 and the annular release piston 26 for the cone sleeve 27 are hydraulically relaxed. Now the clamping piston 25 is tensioned for the rolling ring, so that the rolling ring is pressed against the stop surface 30 of the stop ring 32 via the support surface 29 of the support sleeve 28.

Der Ringkolben 37 zum Klemmen der Konusbüchse 27 wird hydraulisch vorgespannt und eingeschoben. Anschließend wird der Klemmkolben 25 für den Walzring 10 auf maximalen Druck vorgespannt und die Überwurfmutter 22 von Hand auf Anschlag angezogen.The ring piston 37 for clamping the conical sleeve 27 is hydraulically preloaded and inserted. The clamping piston 25 for the rolling ring 10 is then pretensioned to maximum pressure and the union nut 22 is tightened by hand to the stop.

Der Kassettenbügel 19 wird über die von Hand in den Zentrierbolzen eingeschwenkten Riegel verriegelt. Jetzt erfolgt die hydraulische Entspannung der Zentriereinheit, wobei die Zentrierbolzen mit Hilfe der Druckfedern zurückgedrückt werden und so die Klemmung des Kassettenbügels übernehmen.The cassette bracket 19 is locked by means of the latch pivoted into the centering bolt by hand. Now the centering unit is hydraulically relaxed, whereby the centering bolts are pushed back with the help of the compression springs and thus take over the clamping of the cassette bracket.

Die neuen Walzen und die neuen Walzarmaturen werden mit Hilfe der zwangsverbundenen Exzenterbüchsen 15, 15′ auf die neue Kaliberöffnung einjustiert.The new rollers and the new rolling fittings are adjusted to the new caliber opening with the aid of the positively connected eccentric bushes 15, 15 '.

Figur 3 und Figur 4 zeigen eine weitere Modul-Einheit 8, 8′, 8˝ mit einer wechselbaren Walzenkassette 40, die in Sandwich-Bauweise ausgebildet ist. Die Walzenkassette besteht aus zwei Kassettenplatten 44 mit an ihren Enden winklig abgehenden und aufeinander zuweisenden Kupplungsstücken 45. In den Kassettenplatten sind die Walzringwellen 41 in Lagern 42 getragen. Die Wellenenden der Walzringwellen 41 sind in die nicht mehr dargestellte Getriebekassette 47 einsteckbar. An dem anderen Wellenende der Walzringwellen 41 ist die Hydraulikmutter 50 zu erkennen, mit der mit Hilfe einer auf die Walzringwelle aufgeschobenen Konusbüchse 49 der Walzring 46 auf der Welle 41 in radialer Richtung befestigt wird. An den Außenseiten der Kassettenplatten 44 ist die Anstelleinheit 43 zum Einstellen der Walzringe 46 auf die jeweilige Kaliberöffnung angeordnet. Das in Figur 3 dargestellte, von einem auf die geteilte Welle 55 aufschiebbaren nicht näher dargestellten Handrad drehbare Ritzel 54 wirkt über mindestens ein weiteres zwischengeschaltetes und nicht näher dargestelltes Stirnrad auf die mit einer Außenverzahnung 56 versehene Exzenterbüchse 57 (Fig. 4). In der Exzenterbüchse 57 sind die Lagereinheiten für die Walzringwelle, in diesem Falle Pendelrollenlager, angeordnet. Die Exzenterbüchse 57 ist getriebeseitig mit Hilfe der Verbindungswelle 55 mit der anderen Anstelleinheit 43 zwangsweise verbunden, die an derjenigen Kassettenplatte 44 angeordnet ist, die zur Getriebekassette 47 weist. Der Einfachheit halber ist in Figur 4 lediglich die weitere Lagereinheit 42, bestehend aus Pendelrollenlagern gezeichnet; die die Pendelrollenlager 42 aufnehmende Exzenterbüchse ist identisch derjenigen, Exzenterbüches 57, die mit bezug auf die Kassettenfrontplatte 44 dargestellt ist.Figure 3 and Figure 4 show a further module unit 8, 8 ', 8˝ with an exchangeable roller cassette 40, which is designed in a sandwich construction. The roller cassette consists of two cassette plates 44 with coupling pieces 45 which end at one end and point towards one another. The rolling ring shafts 41 are supported in bearings 42 in the cassette plates. The shaft ends of the rolling ring shafts 41 can be inserted into the transmission cassette 47, which is no longer shown. At the other shaft end of the rolling ring shafts 41, the hydraulic nut 50 can be seen, with which the rolling ring 46 is fastened on the shaft 41 in the radial direction with the aid of a conical bush 49 pushed onto the rolling ring shaft. On the outer sides of the cassette plates 44, the adjusting unit 43 for adjusting the roller rings 46 to the respective caliber opening is arranged. The pinion 54 shown in FIG. 3, which can be rotated by a handwheel (not shown) that can be pushed onto the split shaft 55, acts on the eccentric bushing 57 provided with external teeth 56 via at least one intermediate spur gear (not shown) (FIG. 4). The bearing units for the rolling ring shaft, in this case spherical roller bearings, are arranged in the eccentric bushing 57. The eccentric bushing 57 is forcibly connected on the transmission side by means of the connecting shaft 55 to the other actuating unit 43 which is arranged on the cassette plate 44 which faces the transmission cassette 47. For the sake of simplicity, only the further bearing unit 42, consisting of spherical roller bearings, is drawn in FIG. 4; the spherical roller bearings 42 receiving eccentric bushing is identical to that, eccentric bushing 57, which is shown with reference to the cassette front plate 44.

Figur 3 zeigt auch, daß die gesamte Walzenkassette 40 von der Getriebekassette 47 abgezogen werden kann und gegen eine neue Kassette ausgetauscht werden kann, gegebenenfalls gegen eine andere Kassettentype oder eine andere Kassettengröße mit unterschiedlichen Achsabständen. Figur 3 zeigt aber auch, daß die Kassettenfrontplatte 44 der Walzenkassette 40 bedarfsweise separat ausgewechselt werden kann, gegebenenfalls mit den Walzringen 46 und/oder den Walzarmaturen. Zu diesem Zweck werden die Schrauben des Kupplungsstücks 45 gelöst bzw. entfernt und die Hydraulikmutter 50 entspannt und gelöst. Da der Walzring 46 auf der Konusbüchse 49 aufsitzt, wird auch dieser von der Walzringwelle mit abgezogen, wenn die Kassettenfrontplatte entfernt wird. Dann ist der Walzring 46 gut zugänglich und kann ohne weiteres von der Konusbüchse 49 abgezogen und gegen einen neuen Walzring ausgetauscht werden. Die Wartungszeiten für die Walzenkassette und die Wechselzeiten für die Walzringe werden dadurch ganz erheblich reduziert insbesondere dann, wenn die Walzringkühlung 48 und andere hydraulische Anschlüsse an derjenigen Kassettenplatte 44 verbleiben, die mit der Getriebekassette 47 verbindbar ist (Figur 3). Unterschiedliche Durchmesser von bspw. ausgetauschten Walzringen sind mit den Bezugsziffern 46′ und 46˝ gekennzeichnet.FIG. 3 also shows that the entire roller cassette 40 can be pulled off the gear cassette 47 and can be exchanged for a new cassette, possibly for a different cassette type or a different cassette size with different center distances. Figure 3 also shows that the cassette front plate 44 of the roller cassette 40 can be replaced separately if necessary, if necessary with the roller rings 46 and / or the roller fittings. For this purpose, the screws of the coupling piece 45 are loosened or removed and the hydraulic nut 50 is relaxed and loosened. Since the roller ring 46 is seated on the taper bush 49, this is also pulled off the roller ring shaft when the cassette front plate is removed. Then the rolling ring 46 is easily accessible and can be easily removed from the taper bush 49 and exchanged for a new rolling ring. The maintenance times for the roller cassette and the changing times for the roller rings are thereby reduced considerably, in particular when the roller ring cooling 48 and other hydraulic connections remain on the cassette plate 44 which can be connected to the gear cassette 47 (FIG. 3). Different diameters of, for example, exchanged rolling rings are identified by the reference numerals 46 'and 46˝.

Die Walzringe 46 sitzen wie zuvor beschrieben auf einer auf der Walzringwelle 41 aufgeschobenen Konusbüchse 49, welche zum Klemmen und Lösen der Walzringe in radialer Richtung mit dem axialen Druck der Hydraulikmutter 50 beaufschlagt wird, deren Wirkungsweise als bekannt vorausgesetzt wird. Damit die Walzringe 46 nicht nur in radialer Richtung auf der Walzringwelle 41 festsitzen, sondern auch axial und in Umfangsrichtung, sind die Walzringe zwischen ringförmigen Klemmstücken 51 gehalten, wobei zwischen den Klemmstücken 51 und den Seitenflanken 53 der Walzringe Reibscheiben 52 als Verbindungselemente eingelegt sind, und wobei ferner die Klemmstücke 51 mit der Konusbüchse 49 bzw. auf der anderen Seite mit der Walzringwelle 41 keilnutverzahnt sind.As previously described, the roller rings 46 are seated on a conical sleeve 49 pushed onto the roller ring shaft 41, which is acted upon in the radial direction by clamping and releasing the roller rings with the axial pressure of the hydraulic nut 50, the mode of operation of which is assumed to be known. So that the rolling rings 46 not only in in the radial direction on the rolling ring shaft 41, but also axially and in the circumferential direction, the rolling rings are held between annular clamping pieces 51, friction discs 52 being inserted as connecting elements between the clamping pieces 51 and the side flanks 53 of the rolling rings, and furthermore the clamping pieces 51 with the Taper bush 49 or on the other side are splined with the rolling ring shaft 41.

Die oben beschriebenen Maßnahmen sind nicht nur auf das dargestellte Ausführungsbeispiel beschränkt, sondern beziehen sich ebenfalls auf alle solche konstruktiven Lösungen, die unter die Patentansprüche fallen.The measures described above are not only limited to the illustrated embodiment, but also relate to all such constructive solutions that fall under the claims.

Liste der BezugszeichenList of reference numbers

11
VorstraßeVorstrasse
22nd
ZwischenstraßeIntermediate street
33rd
FertigstraßeFinishing train
44th
FertigblockFinished block
55
WasserkühlstreckeWater cooling section
66
AblegebettStorage bed
77
CL-GerüstCL framework
8, 8′, 8˝8, 8 ′, 8˝
Modul-EinheitModule unit
99
Schwerpunktmain emphasis
10, 10′10, 10 ′
WalzringeRoll rings
1111
SchnellspannvorrichtungQuick release device
1212th
GetriebekassetteGearbox
1313
erstes Lagerfirst camp
14, 14′14, 14 ′
Wellewave
15, 15′15, 15 ′
ExzenterbüchsenEccentric bushes
1616
SchneckengewindeWorm thread
17, 17′17, 17 ′
StirnräderSpur gears
1818th
zweites Lagersecond camp
1919th
KassettenbügelCassette bracket
2020th
Kupplungclutch
2121
DruckmutterPressure nut
2222
ÜberwurfmutterCap nut
2323
HalteringRetaining ring
2424th
ZylinderteilCylinder part
2525th
ringförmiger Klemmkolbenring-shaped clamping piston
2626
ringförmiger Lösekolbenring-shaped release piston
2727
KonusbüchseTaper bush
2828
StützhülseSupport sleeve
2929
StützflächeSupport surface
3030th
Stirnfläche WalzringRoll ring end face
3131
Stirnfläche WalzringRoll ring end face
3232
AnschlagringStop ring
3333
AnschlagflächeAbutment surface
3434
LängsverzahnungLongitudinal teeth
3535
LängsverzahnungLongitudinal teeth
3636
Paßfederadjusting spring
3737
RingkolbenRing piston
3838
ReibscheibeFriction disc
3939
Stirnseite StützhülseFront side support sleeve
4040
WechselkassetteExchange cassette
4141
WalzringwelleRoll ring shaft
4242
LagereinheitStorage unit
4343
AnstelleinheitInstead of
4444
Kassettenplatte, KassettenfrontplatteCassette plate, cassette front plate
4545
KupplungsstückCoupling piece
4646
WalzringRolling ring
4747
GetriebekassetteGearbox
4848
WalzringkühlungRoll ring cooling
4949
KonusbüchseTaper bush
5050
HydraulikmutterHydraulic nut
5151
KlemmstückClamp
5252
ReibscheibenFriction discs
5353
SeitenflankenSide flanks
5454
Ritzelpinion
5555
VerbindungswelleConnecting shaft
5656
AußenverzahnungExternal teeth
5757
ExzenterbüchseEccentric bushing

Claims (7)

  1. Combined continuously operating high-output roll train for small sections and wire, in the roughing train (1) of which as well as in the intermediate train (2) of which and/or in the finishing train (3) of which there are arranged not only cantilever stands (7) with ring rolls mounted at one end (cantilever) but also roll stands with a modular unit (8, 8′, 8˝) with ring rolls (10) mounted at both ends (doubly), characterised thereby that the modular unit (8, 8′, 8˝) with ring rolls (10) mounted doubly has a cassette yoke (19) which contains the second bearing (18) and is arranged at the transmission cassette (12) containing the first bearing (13) and which consists of two yoke parts (19′, 19˝) connectible by a quick-release coupling (20), and that there is provided an automatically actuable, preferably hydraulically operating quick-acting device (11) for the ring rolls (10) mounted doubly, with at least one piston-cylinder unit (25, 26), which acts at least on an end face (30) of the ring roll (10), for the clamping and release of the same in axial direction and with at least one further piston-cylinder unit (37), which acts on the ring roll (10), for the clamping and release in radial direction of a collet (27) carrying the ring roll (10) and displaceably arranged on the shaft (14) thereof.
  2. Roll train for small sections and wire according to claim 1, characterised thereby that the collet (27) stands in connection at its end and by means of the piston-cylinder unit (37) with a support sleeve (28) displaceably arranged on the shaft (14) of the ring roll (10) and carrying the second bearing (18) of the ring roll (10), and that the support sleeve (28) is supported in force-locking manner at the one end face (30) of the ring roll (10).
  3. Roll train for small sections and wire according to claim 1 or 2, characterised thereby that the other end face (31) of the ring roll (10) is supported in force-locking manner at an abutment ring (32) surrounding the shaft (14) of the ring roll (10).
  4. Roll train for small sections and wire according to claim 1, 2 or 3, characterised thereby that a respective friction disc (38) is arranged between the support surfaces (29, 30) of support sleeve (28) and ring roll (10) and between the support surfaces (33, 31) of abutment ring (32) and ring roll (10).
  5. Roll train for small sections and wire according to at least one of the preceding claims 1 to 4, characterised thereby that the other end face (29) of the support sleeve (28) is connected with a cylinder part (24), in which the piston (25) for the clamping of the roll ring (10) and the piston (26) for the release of the collet (27) are slidingly arranged, wherein the pistons (25, 26) are constructed as annular pistons and are seated on the shaft (14) carrying the ring roll (10).
  6. Roll train for small sections and wire according to at least one of claims 1 to 5, characterised thereby that the cylinder part (24) is tightenable, in a given case with interposition of a retaining ring (23), by a pressure nut (21), especially a box nut (22), in direction of the shaft (14) against the support sleeve (28) and against the collet, wherein the box nut (22) is rotatable in the shaft (14) by means of screw-threading for the application of the tightening forces.
  7. Roll train for small sections and wire according to at least one of the preceding claims, characterised thereby that the abutment ring (32), the collet (27) and the support sleeve (28) are arranged on the shaft (14), which carries the ring roll (10), to be shape-locking in circumferential direction, preferably by means of longitudinal toothing (34, 35) or adjusting springs (36).
EP91106401A 1990-05-04 1991-04-20 Combined line for small sections and wire Expired - Lifetime EP0455082B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4014411 1990-05-04
DE4014411 1990-05-04

Publications (2)

Publication Number Publication Date
EP0455082A1 EP0455082A1 (en) 1991-11-06
EP0455082B1 true EP0455082B1 (en) 1994-06-29

Family

ID=6405745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106401A Expired - Lifetime EP0455082B1 (en) 1990-05-04 1991-04-20 Combined line for small sections and wire

Country Status (6)

Country Link
US (1) US5144828A (en)
EP (1) EP0455082B1 (en)
JP (1) JP2810557B2 (en)
CN (1) CN1056268A (en)
AT (1) ATE107876T1 (en)
DE (1) DE59102051D1 (en)

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CN103691738A (en) * 2013-12-20 2014-04-02 宣化钢铁集团有限责任公司 Technology of 10 rack finishing mill group for producing anti-seismic reinforcing steel bar
CN106185465A (en) * 2016-08-31 2016-12-07 漯河利通液压科技股份有限公司 Supertension heavy caliber petroleum drilling delivery hose steel wire coiler tenslator
CN107052044B (en) * 2016-12-01 2019-02-05 成都金中机械设备制造有限公司 Two roller list eccentric bushing milling train of central driving cantilever and adjusting method
EP3378577B1 (en) * 2017-03-22 2019-11-27 Ralf Köllges Hydraulic clamping device for demountable, frictionally engaged connection between two components
CN109848208A (en) * 2017-11-30 2019-06-07 浙江立新珠宝科技有限公司 A kind of fully automatic loop rolling line mechanism
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Also Published As

Publication number Publication date
ATE107876T1 (en) 1994-07-15
EP0455082A1 (en) 1991-11-06
DE59102051D1 (en) 1994-08-04
US5144828A (en) 1992-09-08
JPH04228205A (en) 1992-08-18
JP2810557B2 (en) 1998-10-15
CN1056268A (en) 1991-11-20

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